US Pat. No. 9,359,480

NON-DEWETTING POROUS MEMBRANES

Entegris, Inc., Billeric...

1. A fluorocarbon liquid composition comprising a fluorocarbon liquid medium containing a fluorinated ionomer dissolved or
dispersed therein, the fluorinated ionomer having iodine and/or bromine atoms at a terminal position, at least 90% by weight
of the fluorinated ionomer consisting in particles of size lower than 200 nm, wherein the fluorinated ionomer comprises units
from copolymerization of:
i) tetrafluoroethylene;
ii) fluorinated monomer units containing ethylenic groups and functional groups chosen from —SO2F, —COOR, —COF or combinations of these, wherein R is a C1 to C20 alkyl radical or a C6 to C20 aryl radical;

iii) monomeric units deriving from a bis-olefin, chosen from formulae (OF-1), (OF-2), or (OF-3) where:

wherein j is an integer between 2 and 10, and R1, R2, R3, R4, individually equal or different from each other, are H, F or
C1 to C5 alkyl or (per)fluoroalkyl group;


wherein each of A, equal or different from each other and at each occurrence, is independently F, Cl, or H; each of B, equal
or different from each other and at each occurrence, is independently F, Cl, H or ORB, wherein RB is a branched or straight
chain alkyl radical which can be partially, substantially or completely fluorinated or chlorinated; E is a divalent group
having 2 to 10 carbon atom, optionally fluorinated, which may be inserted with ether linkages;


wherein E, A and B have the same meaning as above defined; R5, R6, R7, independently equal or different from each other, are
H, F or C1-5 alkyl or (per)fluoroalkyl group; and

iv) a compound having the formula Rf(I)x(Br)y, wherein where Rf is a fluoroalkyl or (per)fluoroalkyl or a (per)fluorochloroalkyl group having from 1 to 8 carbon atoms, and wherein x and
y are integers from 0 to 2, with 1?x+y?2;

wherein the fluorocarbon liquid medium comprises a mixture of perfluoropolyethers, said perfluoropolyethers having the general
formula F3C—O—[CF2—CF(CF3)—O]n—[CF2—O]m—CF3 wherein m and n are integers, being n>0 and m?0, said perfluoropolyethers having molecular weight between 300 atomic mass
units (amu) and 600 amu, said mixtures having prevailing average boiling points between 55° C. and 135° C. and an average
ratio between the indexes m and n (m/n) below 0.05;

wherein the fluorinated ionomer has an equivalent weight of between 380 g/eq and 620 g/eq; and
wherein the concentration of fluorinated ionomer in the fluorocarbon liquid composition range from 0.1 weight percent to 4
weight percent.

US Pat. No. 9,234,063

PERFLUOROELASTOMER

SOLVAY SPECIALTY POLYMERS...

1. A peroxide curable perfluoroelastomer consisting essentially of:
recurring units derived from tetrafluoroethylene (TFE);
recurring units derived from perfluoromethylvinylether (MVE);
iodine in the end position of the macromolecules; and
optionally recurring units derived from a bis-olefin of formula (I):

wherein:
R1, R2, R3, R4, R5 and R6, which are identical or different from each other, are H or C1-C5 alkyl; and

Z is a linear or branched C1-C 18 alkylene or cycloalkylene radical, optionally containing oxygen atoms,

said perfluoroelastomer possessing a Mooney Viscosity (ML2+9) at 121° C. of from 25 to 140 MU, when measured according to
ASTM D1646 standard, comprising said MVE recurring units in an amount of from 26 to 33% by moles with respect to total moles
of TFE and MVE, from 67 to 74% moles of recurring units derived from TFE with respect to total moles of TFE and MVE, and optionally
said bis-olefin recurring units are present in an amount of from 0.01 to 1% moles with respect to total moles of TFE and MVE.

US Pat. No. 9,371,412

PROCESS FOR IMPARTING GREASE, OIL AND WATER REPELLENCE TO SUBSTRATES

Solvay Specialty Polymers...

1. A process for imparting grease, oil and water repellence to a cellulosic substrate, said process comprising:
applying by means of a gravure method printing process on at least a portion of the surface of said cellulosic substrate a
composition comprising from about 1 to 2 percent by weight of at least one (per)fluoropolyether derivative; and

subjecting at least one surface of the substrate that did not have (per)fluoropolyether derivative applied by means of the
gravure printing method to at least one further processing condition;

wherein the (per)fluoropolyether derivative complies with formula: T-O—Rf1-T, wherein each of T, equal or different at each occurrence is —CF2—COOXa or —CF2CF2—COOXa; Rf1 is a (per)fluoropolyoxyalkylene chain comprising recurring units (Ro), said recurring units (Ro) statistically distributed along the chain being one or more units selected from the group consisting of (CFXO), (CF2CF2O), wherein X?F, CF3; Xa is H, a metal, or an ammonium group of formula N(Rp)4, wherein each of Rp is H.

US Pat. No. 9,090,772

COMPOSITIONS OF IONISABLE FLUOROPOLYMERS

SOLVAY SPECIALTY POLYMERS...

1. A polymer composition comprising:
a) at least one fluorinated ionisable polymer (A), which comprises recurring fluorinated blocks and recurring functional blocks,
each of said recurring functional blocks comprising at least one ionisable anionic group, and wherein at least one of said
recurring functional blocks of polymer (A) is between two fluorinated blocks;

b) at least one fluorinated ionisable polymer (B), which comprises recurring fluorinated blocks and recurring functional blocks,
each of said recurring functional blocks comprising at least one ionisable cationic group, and wherein at least one of the
said recurring functional blocks of polymer (B) is between two fluorinated blocks;

wherein the ratio between the ionic equivalents of polymer (A) and the ionic equivalents of polymer (B) ranges from 1.1 to
0.9.

US Pat. No. 9,944,593

PROCESS FOR THE SYNTHESIS OF FLUORALKYL SULFONATE SALTS

SOLVAY SPECIALTY POLYMERS...

1. A process for the preparation of a fluoroalkyl sulfonate salt of any one of formula (VII), formula (VIII) or formula (IX):

wherein:Rf is selected from the group consisting of C1 to C25 straight-chain, branched or cyclic fluorinated alkyl or alkenyl, optionally substituted and/or optionally comprising heteroatoms selected from the group consisting of O, N and S in the chain;
each of R4, R5, R6, R7 and R8, is independently selected from the group consisting of H, halogen, C1 to C25 straight-chain, branched or cyclic, optionally substituted, alkane or alkene, and C6 to C25, optionally substituted, aryl or heteroaryl;
each of R9, R10, R11 and R12, is independently selected from group consisting of H, C1 to C25 straight-chain, branched or cyclic, optionally substituted, alkane or alkene, optionally containing heteroatoms, wherein up to four of R9, R10, R11 and R12 may be bonded to one another in pairs by single or double bond; and
each of R13, R14, R15, R16 and R17, is independently selected from the group consisting of H, C1 to C25 straight-chain, branched or cyclic, optionally substituted, alkane or alkene, optionally containing heteroatoms, wherein up to four of R13, R14, R15, R16 and R17 may be bonded to one another in pairs by single or double bond;said process comprising the step of reacting a fluoroalkyl sulfonyl halide with an organic base selected from the group consisting of:pyridines of formula (III):

amidines of formula (IV):
andguanidines of formula (V):
wherein R4-R17 are as defined above,in the presence of an alcohol when using a pyridine or amidine organic base; or in the presence of water under basic conditions when using a guanidine organic base.
US Pat. No. 9,371,943

PROCESS FOR LINING METAL PIPELINES

SOLVAY SPECIALTY POLYMERS...

1. A process for lining a metal pipeline, said process comprising the following steps:
(i) processing a thermoplastic fluoropolymer composition to yield a pipe liner having an outer diameter greater than the inner
diameter of said metal pipeline, said thermoplastic fluoropolymer composition comprising:

(A) from 10% to 60% by weight, based on the total weight of polymer A and polymer B, of at least one polymer A, wherein polymer
A is a vinylidene fluoride (VDF) homopolymer,

(B) from 40% to 90% by weight, based on the total weight of polymer A and polymer B, of at least one polymer B, wherein polymer
B is a VDF copolymer comprising from 2% to 15% by moles of recurring units derived from at least one other fluorinated comonomer
F, and optionally, (C) at least one plasticizer;

(ii) deforming said pipe liner to yield a deformed pipe liner having an outer diameter smaller than the inner diameter of
said metal pipeline;

(iii) introducing the deformed pipe liner in said metal pipeline; and
(iv) expanding the deformed pipe liner to fit with the inner diameter of said metal pipeline.

US Pat. No. 9,260,543

METHOD FOR MANUFACTURING FLUOROELASTOMERS

SOLVAY SPECIALTY POLYMERS...

1. A process for manufacturing a (per)fluoroelastomer having a heat of fusion of less than 5 J/g as measured by ASTM D-3418-08,
said process comprising polymerizing at least one fluorinated monomer in the presence of at least one initiator in a polymerization
medium comprising:
(A) water;
(B) at least one fluorinated surfactant [surfactant (FS)] having formula (I) here below:

wherein:
X1, X2 and X3, equal to or different from each other, are independently selected from the group consisting of H, F and C1-C6 (per)fluoroalkyl groups, optionally comprising one or more catenary or non-catenary oxygen atoms,

RF represents a divalent perfluorinated C1-C3 bridging group,

L represents a bond or a divalent group and
Y represents a hydrophilic functionality selected from the group consisting of anionic functionalities, cationic functionalities
and non-ionic functionalities; and

(C) at least one fluorinated compound [compound (F)] different from surfactant (FS);
wherein said polymerization medium has a pH value of less than 7.

US Pat. No. 9,217,045

PURIFICATION OF FLUOROIONOMER COMPOSITIONS

SOLVAY SPECIALTY POLYMERS...

1. A process for the purification from ionic impurities of a fluoroionomer liquid composition, said process comprising:
contacting a liquid composition, said liquid composition comprising at least one fluoroionomer (I-1) and ionic impurities
in a liquid medium, with a solid particulate comprising at least one fluoroionomer (I-2) having ion exchange groups, wherein
H+ or OH? ions are bound to at least a fraction of said ion exchange groups; and

separating said liquid composition from said solid particulate, wherein fluoroionomer (I-1) and fluoroionomer (I-2) are selected
from fluoroionomers (I) comprising recurring units derived from at least one fluorinated functional monomer selected from:

sulfonated perfluoroolefins of formula (M1):
wherein n is an integer between 0 and 6; and X? is selected from the group consisting of Cl, F, Br, I and —O?M+, wherein M+ is a cation selected from the group consisting of H+, NH4+, K+, Li+, Na+, and mixtures thereof;
sulfonated perfluorovinylethers of formula (M2):
wherein m is an integer between 1 and 10; and X? is selected from the group consisting of Cl, F, Br, I and —O?M+, wherein M+ is a cation selected from the group consisting of H+, NH4+, K+, Li+, Na+, and mixtures thereof;
sulfonated perfluoroalkoxyvinylethers of formula (M3):
wherein w is an integer between 0 and 2, RF1 and RF2, equal or different from each other and at each occurrence, are independently —F, —Cl or a C1-10 perfluoroalkyl group, y is an integer between 0 and 6; and X? is selected from the group consisting of Cl, F, Br, I and —O?M+, wherein M+ is a cation selected from the group consisting of H+, NH4+, K+, Li+, Na+, and mixtures thereof;
sulfonated aromatic (per)fluoroolefins of formula (M5):
wherein Ar is a C3-15 aromatic or heteroaromatic moiety and X? is selected from the group consisting of Cl, F, Br, I and —O?M+, wherein M is a cation selected from the group consisting of H+, NH4+, K+, Li+, Na+, and mixtures thereof; and
(M6) mixtures thereof.

US Pat. No. 9,868,684

METHOD FOR MANUFACTURING PERFLUOROVINYLETHERS

SOLVAY SPECIALTY POLYMERS...

1. A process for the manufacture of a perfluorovinylether by hydrodehalogenation of a halofluoroether (HFE) having general
formula (I-A) or (I-B):
RfO—CRf?X—CRf?Rf??X?  (I-A)
wherein Rf represents a C1-C6 perfluoro(oxy)alkyl group; Rf?, Rf? and Rf??, equal or different from each other, independently represent fluorine atoms or C1-C5 perfluoro(oxy)alkyl groups; X and X?, equal to or different from each other, are independently selected from the group consisting
of Cl, Br and I;
wherein Rf* and Rf*?, equal to or different from each other, independently represent fluorine atoms or C1-C3 perfluoro(oxy)alkyl groups; Y1 and Y2, equal to or different from each other, independently represent fluorine atoms or C1-C3 perfluoroalkyl groups; X and X? are as above defined;
said process comprising the step of contacting said halofluoroether (HFE) with hydrogen in the presence of a catalyst, said
catalyst comprising:

palladium;
at least one transition metal (M) selected from the group consisting of the metals of group VIIIB, other than palladium, and
metals of group IB; and

an inert carrier,
wherein the molar ratio between palladium and the at least one transition metal (M) ranges from 2:1 to 1:5, and wherein the
catalyst is prepared by a process where the inert carrier is impregnated with an aqueous solution comprising palladium and
the at least one transition metal selected from ruthenium, copper and gold.

US Pat. No. 9,441,087

FLUOROPOLYMER COMPOSITION

SOLVAY SPECIALTY POLYMERS...

1. A thermoplastic fluoropolymer composition comprising:
at least one semi-crystalline polymer (A) comprising recurring units derived from ethylene and at least one of chlorotrifluoroethylene
(CTFE) and tetrafluoroethylene (TFE), said polymer having a heat of fusion of at most 35 J/g and

from 0.05 to 5% by weight, based on weight of said semi-crystalline polymer (A), of particles of at least one inorganic UV
blocker compound, said particles having an average particle size of 1 to 150 nm.

US Pat. No. 9,051,259

PROCESS FOR PRODUCING PERFLUORINATED ORGANIC COMPOUNDS

SOLVAY SPECIALTY POLYMERS...

1. A process for producing a perfluorinated functional compound, the process comprising:
A) converting an at least partially hydrogenated alcohol into a corresponding at least partially hydrogenated ester compound;
and

B) reacting said at least partially hydrogenated ester compound with fluorine in the presence of at least one (per)haloolefin
comprising at least one carbon-carbon double bond and having at least one fluorine or chlorine atom on either one of the carbon
atoms of said double bond, to obtain a perfluorinated ester compound.

US Pat. No. 10,138,161

PROCESS FOR MANUFACTURING FLUOROPOLYMER COMPOSITES

SOLVAY SPECIALTY POLYMERS...

1. A process for manufacturing a fluoropolymer composite, said process comprising:(i) up-concentrating an aqueous latex comprising from 10% to 40% by weight of at least one fluoropolymer comprising recurring units derived from vinylidene fluoride (VDF) [polymer (VDF)] thereby providing an up-concentrated aqueous latex comprising from 45% to 60% by weight of at least one polymer (VDF);
(ii) contacting one continuous fibre or a bunch of continuous fibres with the up-concentrated aqueous latex thereby forming an impregnated fibrous material;
(iii) squeezing the impregnated fibrous material thereby forming a squeezed fibrous material;
(iv) drying the squeezed fibrous material thereby forming a dried fibrous material;
(v) baking the dried fibrous material at a temperature comprised between 190° C. and 240° C. thereby forming a coated fibrous material;
(vi) cooling the coated fibrous material thereby forming a cooled coated fibrous material;
(vii) optionally, contacting the cooled coated fibrous material with additional up-concentrated aqueous latex and submitting the impregnated fibrous material so provided to sequential steps (iii) to (vi); and
(viii) optionally, repeating step (vii) one or more times.
US Pat. No. 9,228,031

PROCESS FOR REDUCING UNSTABLE END-GROUPS IN FLUORINATED POLYMERS

SOLVAY SPECIALTY POLYMERS...

1. A process for reducing the amount of unstable end-groups in a fluorinated polymer, the process comprising reacting a fluorinated
polymer comprising unstable end-groups with fluorine in the presence of at least one (per)haloolefin comprising at least one
carbon-carbon double bond and having at least one fluorine or chlorine atom on either one of the carbon atoms of said double
bond.
US Pat. No. 9,145,471

PROCESS FOR ENRICHING THE DIFUNCTIONAL CONTENT OF (PER) FLUOPOLYETHER MIXTURES

SOLVAY SPECIALTY POLYMERS...

1. A process for increasing the content of bifunctional species in mixtures of non functional, mono- and bifunctional (per)fluoropolyethers
which comprises the following steps:
(a) adsorbing a mixture (M) of non functional, mono- and bifunctional (per)fluoropolyethers having a first average functionality
(F1) onto an adsorbing stationary phase;

(b) desorbing mixture (M) with a supercritical fluid to recover a (per)fluoropolyether mixture (M?) having a second average
functionality (F2) lower than functionality (F1);

(c) desorbing the remaining mixture (M) with the supercritical fluid in admixture with a polar solvent to recover a (per)fluoropolyether
mixture (M?) having a third average functionality (F3) higher than functionality (F1).

US Pat. No. 9,447,007

PROCESS FOR PRODUCING FLUORINATED ORGANIC COMPOUNDS

SOLVAY SPECIALTY POLYMERS...

1. A composition comprising either
a) at least two compounds selected from the group consisting of compounds having formula (II D1) C[?+G+J+1]H(4+2G+2J-?)F[2?+?]O(G+2), wherein said at least two compounds have the same values of A, G and J and each one having a different value of ? wherein
0???(4+2G+2J) or

b) at least two compounds selected from the group consisting of compounds having formula (II E1) C[??+s?S]H(2+2s?S-??)F[2??+??]O(S+1), wherein said at least two compounds have the same values of ??, s? and S and each one having a different value of ?? wherein
0????(2+2s?·S); and

wherein
?=g1+g3+G·g2 and ? is a rational number that can take any value from 0 to (4+2G+2J), extremes excluded;
??=g4+g5;
?? is a rational number that can take any value from 0 to (2+2s?·S), extremes excluded; and
each g1,g2, . . . gi equal or different from each other, is independently selected from integers from 2 to 10.

US Pat. No. 9,376,527

FLUORINATED POLYURETHANE COMPOSITION

SOLVAY SPECIALTY POLYMERS...

1. An aqueous composition comprising:
(A) 3-25 wt %, with respect to the total weight of the composition, of at least one functional fluorinated polymer [polymer
(F)] selected from the group consisting of:

fluorinated ionisable polyurethane polymers [polymer (PUR)] comprising:
at least one fluorinated block comprising a (per)fluoropolyoxyalkylene chain [chain (ROF)], wherein chain (ROF) comprises one or more repeating units R, said repeating units R, randomly distributed along the (per)fluoropolyoxyalkylene
chain, being selected from the group consisting of:

(i) —CFXO—, wherein X is F or CF3,

(ii) —CF2CFXO—, wherein X is F or CF3, and

(iii) —CF2CF2CF2O—; and

at least one functional block comprising a hydrocarbon chain [chain (RH)], wherein chain (RH) is selected from the group consisting of carboxylic-containing chains (R?HC) of formula:


wherein T is a trivalent hydrocarbon, linear or branched, cyclic or not, aliphatic or aromatic, comprising from 2 to 12 carbon
atoms,

said at least one functional block being linked by urethane moieties having formula (I):

wherein E is a divalent hydrocarbon group selected from the group consisting of:

and mixtures thereof;
wherein:
RC, equal or different at each occurrence, is independently selected from a halogen atom, a C1-C6 hydrocarbon group, —ORH, —NRH?RH?, and —C(O)—RH??, wherein RH, RH?, RH? and RH??, equal to or different from each other, are independently at each occurrence selected from a hydrogen atom or a C1-C6 hydrocarbon group; and

nC is an integer comprised between 0 and 10,

(B) 1-15 wt %, with respect to the total weight of the composition, of at least one functional hydrogenated polymer [polymer
(H)] selected from the group consisting of polyacrylic polymers, polyurethane polymers and mixtures thereof, said polymer
(H) comprising at least one functional group; and

(C) 1-15 wt %, with respect to the total weight of the composition, of at least one cross-linking agent selected from polyaziridine
cross-linking agents;

wherein the weight ratio of the polymer (F) to the polymer (H) is greater than 0.75.
US Pat. No. 9,334,213

PROCESS FOR THE ALKOXYLATION OF (PER) FLUOROPOLYETHER ALCOHOLS

SOLVAY SPECIALTY POLYMERS...

1. A process for preparing an alkoxylated derivative of a (per)fluoropolyether (PFPE) alcohol, the process comprising:
1) separately providing a mixture [M1], comprising a PFPE alcohol and a catalytic amount of the corresponding alkoxide;
2) bringing into contact mixture [M1] with a boric acid triester of the same PFPE alcohol in an amount such that the molar
ratio between the PFPE alkoxide and the boric acid triester is at least 1, to obtain a mixture [M2];

3) contacting mixture [M2] with a catalytic amount of an iodine source to obtain a mixture [M3];
4) treating mixture [M3] with an alkoxylating agent to provide a mixture [M4] containing an alkoxylated derivative of the
PFPE alcohol.

US Pat. No. 9,315,620

(PER)FLUOROPOLYMER COMPOSITION

SOLVAY SPECIALTY POLYMERS...

1. A polymer composition comprising:
a linear (per)fluoropolyether comprising a fully or partially fluorinated polyoxyalkylene chain having recurring units with
at least one catenary ether bond and at least one fluorocarbon moiety and further comprising two end groups, each of said
two end groups containing two carboxy groups each independently selected from carboxylic acids and salts, halides, esters
and anhydrides thereof; and

a polyamine.
US Pat. No. 9,450,262

FLUOROIONOMERS DISPERSIONS HAVING A LOW SURFACE TENSION, LOW LIQUID VISCOSITY AND HIGH SOLID CONTENT

SOLVAY SPECIALTY POLYMERS...

1. A process for manufacturing a (per)fluoroionomer liquid composition having a (per)fluoroionomer content of at least 9%
wt, with respect to the total weight of the composition, said process comprising:
providing a (per)fluoroionomer (I);
submitting said (per)fluoroionomer (I) to at least one step selected from the group consisting of:
(A) fluorination with elemental fluorine;
(B) treatment with a polar organic solvent (S); and
the combination thereof;and separating said (per)fluoroionomer (I) to recover a purified (per)fluoroionomer (I);
dispersing said purified (per)fluoroionomer (I) at a temperature of at least 150° C. in an aqueous medium substantially free
from organic solvents, to obtain an aqueous composition; and

adding to said aqueous composition at least one polar organic solvent (S?).

US Pat. No. 9,595,714

ELECTRODE-FORMING COMPOSITION

SOLVAY SPECIALTY POLYMERS...

1. An electrode-forming composition comprising:
from 0.5 to 10 wt. %, based on the total weight of the composition, of at least one vinylidene fluoride (VDF) polymer;
at least one polar organic solvent;
from 80 to 98 wt. %, based on the total weight of the composition, of at least one active electrode material; and
from 0.5 to 10 wt. %, based on the total weight of the composition, of a graphene oxide having an oxygen content of from 1
to 5% by weight; wherein: the VDF polymer comprises recurring units derived from vinylidene fluoride (VDF) and from at least
one (meth)acrylic monomer (MA) of formula (I):


wherein:
R1, R2 and R3, equal to or different from each other, are independently selected from a hydrogen atom and a C1-C3 hydrocarbon group, and

ROH is a hydrogen atom or a C1-C 5 hydrocarbon moiety comprising at least one hydroxyl group.

US Pat. No. 9,434,679

ALLYL-BEARING FLUORINATED IONOMERS

SOLVAY SPECIALTY POLYMERS...

1. A fluorinated polymer (I) comprising recurring units derived from at least the following monomers:
(i) 5 to 50% by weight of a fluorinated monomer (A) containing at least one —SO2X functionality wherein X is selected from F, OH, and O?Me+, wherein Me+ indicates an alkali metal ion or an ammonium cation of formula NR4+ where each R independently represents a hydrogen atom or a monovalent organic radical selected from aliphatic radicals having
from 1 to 8 carbon atoms and arylic or alicyclic radicals having from 3 to 8 carbon atoms;

(ii) a non-functional fluorinated monomer (B), wherein monomer (B) comprises a fluorocarbon chain having a carbon skeleton,
is free from functional groups that represent potential reaction sites in an organic compound and that may alter the properties
of the carbon skeleton, and has at least one ethylene unsaturation; and

(iii) a fluorinated polyfunctional compound of formula (II):
(CR1R2?CFCF2—O)a—Rf—((O)c—CF?CR3R4)b  (II)

wherein: a is 1, 2 or 3; b is 0 or 1 and the sum of a and b is an integer equal to or larger than 2; c is 0 or 1; R1, R2, R3 and R4 are independently selected from F, H, alkyl, alkoxy, polyoxy alkyl, perfluoroalkyl, perfluoroalkoxy or perfluoropolyoxy alkyl;
and Rf represents a hydrocarbon group or fluorocarbon group having at least two carbon atoms, wherein the hydrocarbon group refers
to a non-fluorinated group containing carbon and hydrogen atoms, and wherein the fluorocarbon group refers to a chemical group
having carbon and fluorine atoms.

US Pat. No. 9,267,012

FLUOROELASTOMER COMPOSITION

SOLVAY SPECIALTY POLYMERS...

1. A (per)fluoroelastomer composition comprising:
at least one (per)fluoroelastomer (A); and
from 0.1 to 30 weight parts, per hundred parts of (per)fluoroelastomer (A), of at least one perfluoropolyether block copolymer
(E) comprising:

one or more (per)fluoropolyoxyalkylene segment (chain Rf), said (per)fluoropolyoxyalkylene segment comprising recurring units having at least one catenary ether bond and at least
one fluorocarbon moiety, and

one or more polyalkylene segment (chain Ra) comprising recurring units of formula: —(CR1eR2e—CR3eR4e)—

 wherein R1e, R2e, R3e, R4e, equal to or different from each other, are selected from the group consisting of H, halogens, and C1-C6 (hydro)carbon groups, optionally containing fluorine or other heteroatoms and

wherein copolymer (E) further comprises at least one per(halo)fluorinated non-aromatic cyclic moiety having at least two sp3 hybridized carbon atoms, wherein at least two of the sp3 hybridized carbon atoms of the moiety are chemically bound to at least two chains Rf, and wherein the moiety optionally comprises conjugated or non conjugated double bond(s).

US Pat. No. 9,988,476

MELT-PROCESSABLE PERFLUOROPOLYMERS HAVING IMPROVED THERMAL AND MECHANICAL PROPERTIES AFTER HEATING TREATMENT

SOLVAY SPECIALTY POLYMERS...

1. A process for heat treating a composition (C) which contains at least one polymer (F), wherein polymer (F) is a melt-processible perfluoropolymer formed of tetrafluoroethylene (TFE) copolymer with one or more perfluorinated comonomer (F) containing at least one ethylene unsaturation in amounts from 0.5% to 13% by weight based on the total weight of polymer (F); the process comprising heat-treating composition (C) at a temperature of at least 260° C. and in the absence of a melt flowable polytetrafluoroethylene (PTFE):for at least 24 hours, and/or
wherein the maximum temperature of heat-treating composition (C) is:
(i) a temperature such that composition (C) is in the solid state during heat treatment; and/or
(ii) below the initial melting temperature of composition (C); and/or
(iii) below the initial melting temperature of polymer (F).
US Pat. No. 9,819,041

MIXED METALLIC OXIDES AS SCAVENGERS FOR FLUORINATED ION EXCHANGE POLYMERS

SOLVAY SPECIALTY POLYMERS...

1. A mixed oxide of Si and at least one metal M, said oxide comprising inorganic groups —SO3H, wherein the inorganic groups —SO3H are not bound to any moiety containing at least one carbon atom.
US Pat. No. 9,580,592

LIQUID COMPOSITIONS OF FLUORINATED ANION EXCHANGE POLYMERS

SOLVAY SPECIALTY POLYMERS...

1. A liquid composition comprising:
a liquid medium comprising at least one aprotic polar organic solvent and less than 25 wt % based on the total weight of the
liquid composition of an alcohol; and

at least 5 wt % based on the total weight of the liquid composition of at least one fluorinated anion exchange polymer (P)
comprising a fluorocarbon backbone and side-chains covalently attached to the backbone having terminal groups of formula (I):
—SO2NR1Q+X?, wherein Q+ is a group comprising at least one quaternary nitrogen atom, and R1 is H or a C1-C20 alkyl group, or forms a ring together with a group in Q+, wherein the ring contains 2 to 10 carbon atoms and, optionally, up to 4 heteroatoms; and X? is an anion selected from the group consisting of organic anions and lipophilic inorganic anions.

US Pat. No. 9,550,954

TRIAZINE DERIVATIVE

SOLVAY SPECIALTY POLYMERS...

1. A triazine derivative of formula (T-1) or formula (T-2):

wherein:
each of Y, Y?, Y?, Y°, Y°?, Y°?, Y°??, Y°?? equal to or different from each other, is independently a hydrocarbon group, optionally
fluorinated, wherein at least one of Y, Y?, Y? in formula (T-1) and at least one of Y°, Y°?, Y°?, Y°??, Y°?? in formula (T-2)
is selected from the group consisting of:

groups of formula —CF2CH2O(CH2CH2O)s?H and —CF2CF2CH2O(CH2CH2O)s?H, wherein s? and s?, equal to or different from each other and at each occurrence, are integers from 0 to 5; and

groups of formula —CF2CH2O(CH2CH2O)w?J?(OH)e? and —F2CF2CH2O(CH2CH2O)w?J?(OH)e?, wherein w? and w?, equal to or different from each other and at each occurrence, are integers from 0 to 5, J? and J? are
C1-C12 hydrocarbon bridging group, optionally comprising ethereal bonds; and e? and e? are integers from 2 to 4;

each of RF, R?F, R?F, R°F, R°?F, R°?F, R°??F , R°??F, R°*F, R°**F, equal to or different from each other, is independently a divalent fluoropolyoxyalkene chain (Rf) comprising repeating units R°, said repeating units selected from the group consisting of:

(i) —CFXO—, wherein X is F or CF3,

(ii) —CFXCFXO—, wherein X, equal to or different at each occurrence, is F or CF3, wherein at least one of X is —F,

(iii) —CF2CF2CW2O—, wherein each of W, equal to or different from each other, are selected from F, Cl, and H,

(iv) —CF2CF2CF2CF2O—, and

(v) —(CF2)j—CFZ—O—wherein j is an integer from 0 to 3 and Z is a group of general formula —ORf?T3, wherein Rf? is a fluoropolyoxyalkene chain comprising between 0 and 10 repeating units each independently selected from the group consisting
of —CFXO—, —CF2CFXO—, —CF2CF2CF2O—, and —CF2CF2CF2CF2O—, with each of X being independently F or CF3, and wherein T3 is a C1—C3 perfluoroalkyl group;

each of E, E?, E?, E°, E°?, E°?, E°??, E°??, E°*, E°**, E°***, E°****, equal to or different from each other, is independently
a bond or a C1-C20 divalent bridging group, optionally comprising heteroatoms, optionally fluorinated, optionally further comprising one or more
than one hydroxyl group; and

n in formula (T-2) is zero or an integer from 1 to 5.
US Pat. No. 9,947,952

FLUOROIONOMERS DISPERSIONS HAVING A LOW SURFACE TENSION, LOW LIQUID VISCOSITY AND HIGH SOLID CONTENT

SOLVAY SPECIALTY POLYMERS...

1. An aqueous liquid composition having a surface tension of 15 to 30 mN/m, when determined at 25° C., said composition comprising:at least one (per)fluoroionomer (I), in an amount of at least 9% wt, with respect to the total weight of the liquid composition;
at least one polar organic solvent (S?); and
water,
wherein said composition is a dispersion possessing a liquid viscosity when determined at 25° C. at a shear rate of 100 sec?1, of:
less than 100 cP, when the (per)fluoroionomer (I) concentration is of at most 15% wt, with respect to the total weight of the liquid composition;
less than 150 cP, when the (per)fluoroionomer (I) concentration is of more than 15% wt and at most 30% wt, with respect to the total weight of the liquid composition;
less than 200 cP, when the (per)fluoroionomer (I) concentration is of more than 30% wt, with respect to the total weight of the liquid composition.
US Pat. No. 9,783,624

PROCESS FOR THE TREATMENT OF SULFONYL FLUORIDE POLYMERS

SOLVAY SPECIALTY POLYMERS...

1. A process for reducing to less than 15% by weight the amount of polymeric fractions in which greater than 24 mole % of
such polymeric fractions comprise monomeric units having at least one sulfonyl fluoride group, in a sulfonyl fluoride polymer
having a heat of fusion not exceeding 4 J/g, measured according to ASTM 3418-08, said process comprising:
contacting said sulfonyl fluoride polymer with at least one fluorinated fluid selected from the group consisting of hydrofluoroethers
and hydrofluoropolyethers for at least 1 minute to form a fluid phase and a polymer phase; and

separating said fluid phase from said polymer phase.
US Pat. No. 9,539,568

PROCESS FOR THE PREPARATION OF CROSS-LINKED FLUORINATED POLYMERS

SOLVAY SPECIALTY POLYMERS...

1. A process for the preparation of a cross-linked fluorinated polymer (XLP) comprising sulfonic acid functional groups, the
process comprising the steps of:
a) providing a liquid composition comprising at least one fluorinated polymer (P) in a liquid medium comprising water, wherein
fluorinated polymer (P) comprises at least one —SO3M functional group, wherein each M is selected from the group consisting of H and alkaline metals, said fluorinated polymer
(P) containing less than 2% of —SO2F functional groups with respect to the total number of —SO3M and —SO2F functional groups; and

b) reacting said fluorinated polymer (P) with at least one cross-linking agent (XL) of formula R(X)n wherein:

R is selected from a bond, O, S, N, an aromatic group and an aliphatic group, wherein the aliphatic group may be linear, cyclic,
or branched, wherein one or more carbons on the aromatic group or the aliphatic group may be further substituted and/or fluorinated,
and wherein carbons in the aromatic group or the aliphatic group may be interrupted by one or more heteroatoms;

n is an integer ?2; and
X is a functional group selected from the group consisting of —NH2, —NHRa, —Si(Rb)3, —OH, and —SO2W, wherein

Ra is a C1-C20 alkyl, Rb is a C1-C5 alkyl, and W is selected from OH, F, Cl, Br, and I;

said reaction being carried out under conditions that promote the formation of covalent bonds between the at least one functional
group —SO3M of the fluorinated polymer (P) and at least one functional group X in the cross-linking agent (XL).

US Pat. No. 9,540,461

FLUORINATED UNSATURATED COMPOUND AND POLYMERS OBTAINABLE THEREFROM

SOLVAY SPECIALTY POLYMERS...

1. A compound of formula CF2?CFCF2OSF5.
US Pat. No. 9,370,733

PROCESS FOR THE PURIFICATION OF (PER) FLUOROPOLYETHERS WITH CARBOXYLATE END GROUPS

SOLVAY SPECIALTY POLYMERS...

1. A batch chromatography process for the purification of (per)fluoropolyethers (PFPE) carboxylates, the process comprising:
a) contacting a mixture (M) of non-functional PFPEs and functional PFPEs carboxylates wherein Mn of the (per)fluoropolyoxylakylene
chain in the PFPE carboxylate is equal to or higher than 1,500, said mixture (M) having functionality (F), with a solid phase
and a fluorinated organic solvent at ambient conditions to obtain a suspension (S) of a solid phase having adsorbed onto it
a mixture (M1) of functional PFPE carboxylates with functionality (F1) higher than (F) and a liquid phase having therein dissolved
a mixture (M2) with functionality (F2) lower than (F);

b) separating the liquid phase from the solid phase;
c) optionally carrying out one or more washings of the solid phase with the same fluorinated solvent as used in step a);
d) adding the solid phase with a mixture of an alcohol and a fluorinated organic solvent to obtain a suspension (S2) of the
solid phase in a liquid phase, said liquid phase having mixture (M1) therein dissolved;

e) separating the liquid phase from the stationary phase.
US Pat. No. 10,040,875

LIQUID COMPOSITIONS OF FLUORINATED ION EXCHANGE POLYMERS

SOLVAY SPECIALTY POLYMERS...

1. A liquid composition comprising:at least one aprotic organic solvent; and
at least one fluorinated ion exchange polymer dissolved or dispersed in said at least one aprotic organic solvent, said fluorinated ion exchange polymer consisting of: 55 to 92 mol % of recurring units derived from a chlorofluoroolefin of formula CF2?CClY, wherein Y is either F or Cl, and from 6 to 60 mol % of recurring units derived from at least one functional monomer of formula CF2?CF—O—(CF2CF(CF3)O)m—(CF2)nSO2X, wherein m is an integer equal to 0 or 1, n is an integer from 0 to 10 and X is selected from the group consisting of halogens and —O?M+, wherein M+ is a cation selected from the group consisting of H+, NH4+, K+, Li+, Na+, and mixtures thereof.

US Pat. No. 9,862,787

CURABLE COMPOSITION

SOLVAY SPECIALTY POLYMERS...

1. A curable composition comprising:
(a) at least one fluorinated polymer (FP);
(b) at least one curing agent of formula (I):

wherein
each R, equal to or different from each other, is independently selected from the group consisting of hydrogen; halogen; C1-C20 alkyl, linear or branched, optionally substituted and/or optionally fluorinated; C1-C20 oxyalkyl, linear or branched, optionally substituted and/or optionally fluorinated; (per)fluoropolyether chain; aromatic or
heteroaromatic radical, monocyclic or polycyclic, optionally substituted and/or optionally fluorinated;

—SiR13, —(R12SiO)bR1, —PR12,

each R1, equal to or different from each other, is independently selected from the group consisting of hydrogen, C1-C20 alkyl, linear or branched, optionally substituted and/or optionally fluorinated and wherein b is an integer of at least 1;
and

A1 and A2, equal to or different from each other, are each independently selected from the group consisting of hydrogen; halogen; C1-C20 alkyl, linear or branched, optionally substituted and/or optionally fluorinated; C1-C20 oxyalkyl, linear or branched, optionally substituted and/or optionally fluorinated; (per)fluoropolyether chain; —(R12SiO)bR1; and aromatic or heteroaromatic radical, monocyclic or polycyclic, optionally substituted and/or optionally fluorinated;
or wherein A1 and A2, together with the carbons to which they are attached, form an alkyl or aromatic cyclic structure, optionally substituted
and/or optionally fluorinated; and

(c) at least one fluorinated aromatic compound (FAC) selected from compounds of formulae (FAC-I), (FAC-II) and (FAC-III):

wherein:
RF1 and R?F1, equal or different from each other are fluoropolyoxyalkylene chains bound to an sp3 hybridized carbon atom of the core molecule either via an ether linkage or a C—C bond, optionally bound at their distal end
group to another sp3 hybridized carbon atom of a further non-aromatic cyclic moiety; and

Wf is a fluorine atom or a C1-C6 perfluorocarbon group.

US Pat. No. 9,574,037

CROSS-LINKABLE POLYMERS COMPRISING SULFONIC ACID FUNCTIONAL GROUPS

SOLVAY SPECIALTY POLYMERS...

1. A fluoropolymer [polymer (F)] comprising:
recurring units derived from at least one ethylenically unsaturated fluorinated monomer [monomer (FM)];
from 5% to 60% by moles, with respect to the total moles of recurring units of polymer (F), of recurring units derived at
least one ethylenically unsaturated fluorinated monomer containing at least one —SO2F functional group [monomer (IO)]; and

from 0.01% to 10% by moles, with respect to the total moles of recurring units of polymer (F), of recurring units derived
from at least one monomer comprising an azide group [monomer (Az)], wherein monomer (Az) does not comprise a (per)fluorovinyl
ether end group of formula CF2?CF—O—.

US Pat. No. 9,458,272

LOW VISCOSITY FLUOROELASTOMERS

SOLVAY SPECIALTY POLYMERS...

1. A low viscosity curable fluoroelastomer or (per)fluoroelastomer [fluoroelastomer (A)] having a number-averaged molecular
weight of 3,000 to 45,000, said fluoroelastomer (A) comprising:
at least 1% moles, with respect to the total moles of recurring units, of recurring units derived from at least one (per)fluoromethoxyalkylvinylether
of formula (I):

CFX??CX?OCF2ORf  formula (I)
wherein X? and X?, equal to or different from each other, are independently H or F; and Rf is selected from the group consisting of C1-C6 (per)fluoroalkyls, linear or branched; C5-C6 cyclic (per)fluoroalkyls; and C2-C6 (per)fluorooxyalkyls, linear or branched, comprising from 1 to 3 catenary ethereal oxygen atoms [monomer (M)],
recurring units derived from vinylidene fluoride (VDF), from tetrafluoroethylene (TFE), or from a combination thereof, and
optionally

recurring units derived from at least one additional (per)fluorinated monomer [comonomer (C)], wherein comonomer (C) is different
from monomer (M), VDF and TFE.

US Pat. No. 9,441,054

VINYLIDENE FLUORIDE COPOLYMERS

SOLVAY SPECIALTY POLYMERS...

1. A fluoropolymer comprising:
recurring units derived from vinylidene fluoride (VDF), and
from 0.01% to 5% by moles of recurring units derived from at least one (meth)acrylic monomer (MA) having formula (I):

wherein:
R1, R2 and R3, equal to or different from each other, are independently selected from the group consisting a hydrogen atom and a C1-C3 hydrocarbon group, and

ROH represents a hydrogen atom or a C1-C5 hydrocarbon moiety comprising at least one hydroxyl group,

and wherein said fluoropolymer comprises end groups having formula —CF2H and/or —CF2CH3 in an amount of at least 30 mmoles per Kg of vinylidene fluoride (VDF) recurring units.

US Pat. No. 9,416,085

PROCESS FOR THE MANUFACTURE OF FLUOROSURFACTANTS

SOLVAY SPECIALTY POLYMERS...

1. A process for the manufacture of a perfluorooxycarboxylic acid or perfluorooxycarboxylate of formula (I):
RfO—CF2CF2—O—CF2—COOXa  (I)

wherein Rf is a perfluoro(oxy)alkyl group, and Xa is H, a monovalent metal or an ammonium group of formula NRN4, with RN, equal or different at each occurrence, being H or a C1-6 hydrocarbon group, said process comprising:

(A) reacting a perfluorovinylether of formula Rf—O—CF?CF2 with an ethylene glycol derivative selected from the group consisting of ethylene glycol (HO—CH2CH2—OH), glycolaldehyde (HO—CH2—CHO), and protected derivatives thereof, so as to yield the corresponding addition product of formula Rf—O—CFH—CF2—O—CH2-E, with Rf having the same meaning as defined in formula (I), and E being selected from the group consisting of —CH2OH, —COOH, and —CHO;

(B) optionally protecting functional group E;
(C) fluorinating said addition product to yield the corresponding perfluorinated addition product;
(D) optionally deprotecting said perfluorinated addition product to yield corresponding acyl fluoride of formula Rf—O—CF2—CF2—O—CF2—C(O)F; and

(E) hydrolyzing and, optionally, neutralizing, said acyl fluoride for yielding the perfluorooxycarboxylic acid or perfluorooxycarboxylate
of formula (I).

US Pat. No. 9,394,243

(PER)FLUOROPOLYETHER BLOCK COPOLYMERS

SOLVAY SPECIALTY POLYMERS...

1. A process for the preparation of a (per)fluoropolyether block copolymer, the block copolymer comprising:
A) a fluoropolyoxyalkylene segment (chain Ra) comprising one or more units of formula (CHXCF2CF2O)— in which X is hydrogen or fluorine; and

B) a (per)fluoropolyoxyalkylene segment (chain Rf), wherein chain Rf complies with formula:

—(CF2CF2O)p?(CF2O)q?—

wherein p? and q? are integers ?0 and are selected in such a way that chain Rf has a molecular weight greater than 400 g/mol,
said process comprising ring-opening a 2,2,3,3-tetrafluorooxethane with an acyl fluoride of a (per)fluoropolyether comprising
chain Rf in the presence of an inorganic or organic fluoride.
US Pat. No. 10,030,087

METHOD FOR MANUFACTURING FLUOROELASTOMERS

SOLVAY SPECIALTY POLYMERS...

1. A fluoroelastomer (A) comprising recurring units derived from vinylidene fluoride and from at least one additional fluorinated monomer, said fluoroelastomer further comprising:end groups of formula —CF2H and/or —CF2CH3 in an amount of at most 60 mmoles per kg of fluoroelastomer; and
polar end groups of formula —CF2CH2OH in an amount of at most 5 mmoles per kg of fluoroelastomer.
US Pat. No. 9,944,571

ONE-POT PROCESS USING HETEROGENEOUS CATALYST

SOLVAY SPECIALTY POLYMERS...

1. A process for the one-pot hydrogenation and acid-catalysed isomerisation or dehydration of a substrate (I) containing at least a C?C, a C?O, an acetal, a 1,2-diol or a hemiacetal moiety to obtain a product (II), wherein said process comprises reacting the substrate (I) with hydrogen (H2) in the presence of a catalyst (III), said catalyst comprising transition metal particles having particle size below 50 nm supported on a material comprising at least one fluorinated polymer (P), wherein polymer (P) bears —SO2X functional groups, X being selected from X? and OM, X? being selected from the group consisting of F, Cl, Br, and I; and M being selected from the group consisting of H, an alkaline metal and NH4.

US Pat. No. 9,732,017

PROCESS FOR THE DEHYDROCHLORINATION OF CHLORINATED HYDROCARBONS

SOLVAY SPECIALTY POLYMERS...

1. A process for the dehydrochlorination of a chlorinated hydrocarbon comprising at least one chlorine atom and at least one
hydrogen atom on vicinal carbon atoms to yield the corresponding unsaturated hydrocarbon, said process comprising contacting
the chlorinated hydrocarbon with a guanidinium salt or its guanidine precursor wherein the guanidine precursor is selected
from the group of compounds of formula (I):

wherein each of R, R1, R2, R3 and R4 is independently selected from the group consisting of H and C1-C12 linear or branched alkyl, optionally substituted; or wherein R, R1, R2 and R3 may be comprised in an aliphatic or aromatic cyclic structure, optionally containing heteroatoms; or wherein R1, R2, R3 and R4 may be a monocyclic or polycyclic aromatic radical optionally containing heteroatoms and/or optionally substituted.

US Pat. No. 9,518,178

MILLING PROCESS

SOLVAY SPECIALTY POLYMERS...

1. A process for manufacturing micronized pellets of a (per)fluoroelastomer composition, said process comprising milling a
composition consisting essentially of at least one (per)fluoroelastomer (A) and at least one thermoplastic semicrystalline
vinylidene fluoride polymer (F) at a temperature below glass transition temperature of said (per)fluoroelastomer, wherein
the micronized pellets, after 24 hours of storage at room temperature, have a pourability of less than 60 s when measured
according to ASTM D1895 standard, using the funnel of Test method B and the cylinder of Test Method A, when measured at room
temperature.

US Pat. No. 9,458,307

CURABLE COMPOSITION

SOLVAY SPECIALTY POLYMERS...

1. A curable composition comprising:
(a) at least one fluorinated polymer (P) comprising cure sites in the backbone, either in the polymer chain or in one or more
end groups; and

(b) at least one curing agent of formula (II):

wherein each R, equal to or different from each other, is independently selected from the group consisting of hydrogen; halogen;
C1-C20 alkyl, linear or branched, optionally substituted and/or optionally fluorinated; C1-C20 oxyalkyl, linear or branched, optionally substituted and/or optionally fluorinated; (per)fluoropolyether chain; aromatic or
heteroaromatic radical, monocyclic or polycyclic, optionally substituted and/or optionally fluorinated; —SiR13, —(R12SiO)bR1, —PR12 wherein each R1, equal to or different from each other, is independently selected from the group consisting of hydrogen, C1-C20 alkyl, linear or branched, optionally substituted and/or optionally fluorinated and wherein b is an integer of at least 1;
wherein X is a divalent bridging group selected from the group consisting of a carbon-carbon bond; a C1-C20 alkylene radical, optionally substituted and/or optionally fluorinated; a divalent (per)fluoropolyether radical; an organopolysiloxane
radical —(R12SiO)b—; a —O— radical; a —S— radical; a —SO2— radical; a —C(O)— radical; a fused aromatic or heteroaromatic structure optionally substituted and/or optionally fluorinated;
and

wherein the curable composition is a dry curable composition.

US Pat. No. 9,920,141

PROCESS FOR MANUFACTURING A DISPERSION OF A VINYLIDENE FLUORIDE POLYMER

SOLVAY SPECIALTY POLYMERS...

1. A process for manufacturing a dispersion of a vinylidene fluoride (VDF) thermoplastic polymer [polymer (F)], said process
comprising polymerizing VDF in an aqueous phase comprising:
at least one fluorinated surfactant (FS) complying with formula (IB) here below:

wherein:
X1, X2 and X3, equal to or different from each other, are independently selected from the group consisting of H, F and C1-C6 (per)fluoroalkyl groups, optionally comprising one or more catenary or non-catenary oxygen atoms,

RF represents a divalent perfluorinated C1-C3 bridging group,

L represents a bond or a divalent group and
Y represents an anionic functionality, selected from the group consisting of:

wherein Xa is a hydrogen atom, a monovalent metal, or an ammonium group of formula —N(R?n)4, wherein R?n, equal or different at each occurrence, is a hydrogen atom or a C1-C6 hydrocarbon group;

wherein the at least one fluorinated surfactant has a molecular weight of less than 400; and
at least one functional (per)fluoropolyether (functional PFPE) comprising at least one (per)fluoropolyoxyalkylene chain [chain
(R?F)] and at least one functional group, said functional PFPE having a number average molecular weight of at least 1000 and a
solubility in water of less than 1% by weight at 25° C.,

wherein said functional PFPE is present in the aqueous phase in an amount of 0.001 to 0.3 g/L.
US Pat. No. 9,683,151

NON-AQUEOUS FLUOROPOLYMER COMPOSITIONS

SOLVAY SPECIALTY POLYMERS...

1. A non-aqueous fluoropolymer composition comprising:
a) at least one fluorinated ionisable polymer (A), which comprises recurring fluorinated blocks and recurring functional blocks,
each of said recurring functional blocks comprising at least one ionisable anionic group, and wherein at least one of the
said recurring functional blocks is comprised between two fluorinated blocks; and

b) at least one fluorinated ionisable polymer (B), which comprises recurring fluorinated blocks and recurring functional blocks,
each of said recurring functional blocks comprising at least one ionisable cationic group, and wherein at least one of the
said recurring functional blocks is comprised between two fluorinated blocks;

c) at least one fluorinated solvent; and
d) at least one alcohol.
US Pat. No. 9,623,367

METHOD FOR REMOVING CARBON DIOXIDE FROM GAS MIXTURES

SOLVAY SPECIALTY POLYMERS...

12. A method for removing carbon dioxide (CO2) from a gas mixture containing CO2 and at least one other gas, said method comprising contacting the gas mixture with:
one or more linear (per)fluoropolyether PFPE fluid of formula (I):
T-O—(CF2O)a1(CF2CF2O)a2(CF2CF2CF2O)a3(CF2CF2CF2CF2O)a4-T?  (I)

wherein:
T and T?, equal to or different from each other, are selected from CF3, C2F5 and C3F7;

a1, a2, a3 and a4, equal to or different from each other, are independently integers ?0, selected in such a way that a1+a2+a3+a4
ranges from 20 to 220 and a2/a1 ranges from 0.1 to 10; and wherein, when at least two of a1-a4 are different from 0, recurring
units of (CF2O), (CF2CF2O), (CF2CF2CF2O), and (CF2CF2CF2CF2O), when present, are statistically distributed along the chain;

in admixture with one of more branched PFPE fluid of formula (III):
T-O—[CF(CF3)CF2O]c1(CFXO)c2-T?  (III)

wherein:
X is equal to —F or —CF3;

T and T?, equal to or different from each other, are selected from CF3, C2F5 and C3F7;

c1 and c2, equal or different from each other, are independently integers ?0 selected such that the c1/c2 ratio is between
20 and 1,000 and c1+c2 is in the range 5 to 250; and wherein, when c1 and c2 are both different from zero, recurring units
of [CF(CF3)CF2O] and (CFXO) are statistically distributed along the chain;

said one or more branched PFPE fluid of formula (III) being in an amount ranging from 1 to 50% by weight with respect to the
one or more PFPE fluid of formula (I).

US Pat. No. 10,035,107

COMPOSITE MEMBRANE COMPRISING LAYER OF PERFLUOROPOLYETHER ON HYDROPHILIC SUBSTRATE

SOLVAY SPECIALTY POLYMERS...

1. A composite comprising a porous hydrophilic substrate which is a membrane having a nominal pore size in a range of 0.1 ?m to 0.5 ?m, at least partially coated with a hydrophobic coating layer prepared from curing a coating composition (C), the coating composition (C) comprising at least one curable functional perfluoropolyether compound (E), said compound (E) comprising a (per)fluoropolyalkylene chain (Rf) and at least one unsaturated moiety, wherein said chain (Rf) complies with formula:—(CF2O)p(CF2CF2O)q(CFYO)r(CF2CFYO)s—(CF2(CF2)zCF2O)t—
wherein Y is a C1-C5 perfluoro(oxy)alkyl group, z is 1 or 2; and p, q, r, s, t are integers?0, selected such that the molecular weight of said chain (Rf) is more than 500 g/mol and less than 4000 g/mol, wherein the hydrophilic substrate is selected from cellulose, modified PVDF, polysulphone and polyethersulphone.

US Pat. No. 9,828,444

FLUORINATED CHITOSAN DERIVATIVES

SOLVAY SPECIALTY POLYMERS...

1. A poly-[1-4]-D-glucosamine derivative which comprises at least 0.1 mol % and at most 25 mol % of recurring units of formula
(II); at most 10 mol % of recurring units of formula (III); and recurring units of formula (Ia) such that the total amount
of recurring units in the poly-[1-4]-D-glucosamine derivative equals 100 mol %

wherein in formulas (Ia), (II) and (III) R is —H or a C1-C20 alkyl group, optionally comprising cyclic or aromatic moieties, optionally comprising heteroatoms in the alkyl chain, and/or
optionally comprising functional groups; and wherein in formula (II) FPE indicates a fluoropolyether chain; L indicates a
linking group between the fluoropolyether chain and the nitrogen atom in the C-2 position in the D-glucosamine unit and T
a terminal group.

US Pat. No. 9,803,036

METHOD FOR MANUFACTURING FLUOROPOLYMERS

Solvay Specialty Polymers...

1. A process for manufacturing a (per)fluoropolymer, said process comprising polymerizing one or more fluorinated monomers
in the presence of a multi-phase medium, said medium comprising:
(A) a water phase (W);
(B) at least one fluorinated surfactant (FS) having formula (I) here below:
Rf—(OCF2CF2)k-1—O—CF2—COOXa  (I)

wherein Rf is a C1-C3 perfluoroalkyl group comprising, optionally, one or more ether oxygen atoms, k is 2 or 3 and Xa is selected from the group consisting of a monovalent metal and an ammonium group of formula NRN4, wherein RN, equal or different at each occurrence, is a hydrogen atom or a C1-C3 alkyl group;

(C) an oil phase (O) comprising:
at least one non-functional (per)fluoropolyether (non-functional PFPE) comprising at least one (per)fluoropolyoxyalkylene
chain (RF) and free from functional end-groups, and

at least one functional (per)fluoropolyether (functional PFPE) comprising at least one (per)fluoropolyoxyalkylene chain (R?F)] and having a number average molecular weight of at least 1000 and a solubility of less than 1% by weight in water at 25°
C.;

wherein the at least one non-functional (per)fluoropolyether is present in an amount ranging from 0.01% to less than 30% by
weight of the total weight of the multi-phase medium.

US Pat. No. 9,688,786

HYPERBRANCHED FLUOROELASTOMER ADDITIVE

SOLVAY SPECIALTY POLYMERS...

1. A hyperbranched (per)fluoroelastomer [fluoroelastomer (B)] comprising recurring units derived from a bis-olefin [bis-olefin
(OF)] having general formula:

wherein R1, R2, R3, R4, R5 and R6, equal or different from each other, are H or C1-C5 alkyl; Z is a linear or branched C1-C18 alkylene or cycloalkylene radical, optionally containing oxygen atoms, optionally at least partially fluorinated, or a (per)fluoropolyoxyalkylene
radical,

said fluoroelastomer (B) having a slope in G? curve such that the ratio: G?100/G?0.01 is less than 10, when determined at 260° C. according to ASTM D4440 standard, wherein G?100 is the storage modulus at a shear rate of 100 rad/sec and G?0.01 is the storage modulus at a shear rate of 0.01 rad/sec.

US Pat. No. 10,047,181

TETRAFLUOROETHYLENE COPOLYMERS

SOLVAY SPECIALTY POLYMERS...

1. A tetrafluoroethylene (TFE) copolymer [polymer (F)] comprising recurring units derived from at least one perfluoroalkyl(oxy)vinylether of formula CF2?CF—O—Rf, wherein Rf is a C1-C6 perfluoroalkyl radical optionally comprising one or more ethereal oxygen atoms [monomer (F)], wherein the total amount of perfluoroalkyl(oxy)vinylether of formula CF2?CF—O—Rf is from 0.005 to 0.025% moles, with respect to the total moles of recurring units of the copolymer, wherein the following inequality is satisfied:A.I.>0.0663+3.75×[M]
wherein:
A.I. is the Amorphous Index, defined as the ratio between intensity of the waveband centred at about 778 cm?1 and intensity of the waveband centred at about 2367 cm?1, as determined by infrared spectroscopy on a specimen of said TFE copolymer, and
[M] is the % moles of recurring units derived from said monomer (F).
US Pat. No. 10,000,272

THERMAL ACOUSTIC INSULATION BLANKETS

SOLVAY SPECIALTY POLYMERS...

1. A process for the manufacture of an insulation system comprising one or more insulation blankets, said process comprising:encapsulating a core consisting of an insulation material (I) with a shell comprising a multilayer assembly, said multilayer assembly being obtained by:
treating at least one surface of a layer (L1) by a radio-frequency glow discharge process in the presence of an etching gas medium, wherein layer (L1) consists of a composition (C1) comprising at least one poly(aryl ether ketone) polymer having a limiting oxygen index (LOI) of at least 30% by volume,
applying by electroless deposition a layer (L2) onto said at least one treated surface of layer (L1), wherein layer (L2) consists of at least one metal compound (M1), and optionally, applying by electro-deposition a layer (L3) onto the opposite side of layer (L2) wherein layer (L3) consists of at least one metal compound (M2), said metal compound (M2) being equal to or different from said metal compound (M1).

US Pat. No. 9,751,967

VINYLIDENE FLUORIDE AND TRIFLUOROETHYLENE POLYMERS

SOLVAY SPECIALTY POLYMERS...

1. A fluoropolymer comprising:
recurring units derived from vinylidene fluoride (VDF);
from 10% to 50% by moles of recurring units derived from trifluoroethylene (TrFE); and
from 0.01% to 10% by moles of recurring units derived from at least one (meth)acrylic monomer (MA) having formula (I) here
below:

wherein:
R1, R2 and R3, equal to or different from each other, are independently selected from a hydrogen atom and a C1-C3 hydrocarbon group, and

ROH represents a hydrogen atom or a C1-C5 hydrocarbon moiety comprising at least one hydroxyl group, said fluoropolymer comprising end groups of formula —CF2H and/or —CF2CH3.

US Pat. No. 9,403,742

PROCESS FOR THE SYNTHESIS OF TRIFLUOROETHYLENE

SOLVAY SPECIALTY POLYMERS...

1. A process for preparing trifluoroethylene, the process comprising contacting chlorotrifluoroethylene with hydrogen in the
presence of a catalyst consisting of palladium or platinum supported on activated carbon, wherein the activated carbon is
extruded activated carbon.
US Pat. No. 9,266,800

STABLE COMPOSITIONS OF TRIFLUOROETHYLENE

SOLVAY SPECIALTY POLYMERS...

1. A liquid or compressed gas composition comprising trifluoroethylene and hydrogen chloride (HCl) in a molar ratio of trifluoroethylene:HCl
from 10:90 to 63:37, wherein when the composition is a compressed gas the pressure is from 0.50 to 5.00 MPa.
US Pat. No. 10,047,045

FLUORINATED COMPOUNDS CONTAINING A -OSF5 GROUP AND PROCESS FOR THEIR PREPARATION

SOLVAY SPECIALTY POLYMERS...

1. A process for the preparation of fluorinated compounds having at least one —OSF5 group, said process comprising the step of reacting SOF4 with a ring-fluorinated 3- or 4-membered cyclic ether in the presence of a fluoride catalyst.
US Pat. No. 10,011,545

PROCESS FOR THE MANUFACTURE OF ?-IODOPERFLUOROALKANES AND ?,?-DIIODOPERFLUOROALKANES

SOLVAY SPECIALTY POLYMERS...

1. A process for the manufacture of at least one compound of general formula (I):A(C2F4)I,  (I)
wherein:
A is selected from the group consisting of F, CF3 and I and
n is an integer equal to or higher than 1, with the proviso that, when A is F, n is an integer higher than 1
said process comprising heating a mixture (M1) containing:
a compound selected from the group consisting of I2, CF3I, CF3CF2I and C2F4I2;
tetrafluoroethylene (TFE); and
CO2 at a temperature equal to or higher than 130° C., said mixture comprising a liquid phase and a gas phase and containing CO2 in an amount of at least 18% vol with respect to the gas phase.
US Pat. No. 9,890,186

METHOD OF MANUFACTURING CYCLOPHOSPHAZENE DERIVATIVES

SOLVAY SPECIALTY POLYMERS...

1. A method of manufacturing cyclophosphazene derivatives, the method comprising:
contacting a mixture (M), the mixture (M) comprising:
a) a (per)fluoropolyether (PFPE) polyol [PFPE (Ppol)] comprising a fluoropolyoxyalkylene chain (Rf) having two chain ends, each chain end comprising at least one hydroxy group, and

b) a corresponding alkoxide of said perfluoropolyether (PFPE) polyol [PFPE (Palk)], wherein the equivalent concentration of PFPE (Palk) in PFPE (Ppol) is lower than 30%
with a perhalocyclophosphazene (CPhalo) to provide a mixture (M1) containing an equivalent ratio of PFPE (Palk)/(CPhalo) of at least 1;
allowing mixture (M1) to react until complete disappearance of Phalo groups to provide a mixture (M2);

submitting mixture (M2) to hydrolysis to provide a mixture (M3);
optionally removing PFPE (Ppol) from mixture (M3) to provide a mixture (M4).

US Pat. No. 9,534,106

METHOD FOR POLYMERIZNG VINYLIDENE FLUORIDE

SOLVAY SPECIALTY POLYMERS...

1. A process for manufacturing a dispersion of a vinylidene fluoride (VDF)-containing thermoplastic polymer [polymer (F)],
said process comprising polymerizing VDF, optionally in the presence of one or more fluorinated monomer(s) different from
VDF and optionally in the presence of one or more hydrogenated comonomer(s), in an aqueous phase, the aqueous phase comprising:
from 0.5 to 1.5 g/l of at least one surfactant of formula F—(CF2CF2)3—CH2CH2—SO3Xa, wherein Xa is H, an alkali metal or a N(RH)4 group, with RH being H or a C1-C6 hydrocarbon group [surfactant (T)] and

an organic oxidizing agent [agent (O)] as polymerization initiator,
wherein polymer (F) comprises:
(a?) at least 60% by moles of vinylidene fluoride (VDF);
(b?) optionally from 0.1 to 15% by moles of one or more fluorinated monomer(s) different from VDF; and
(c?) optionally from 0.1 to 5% by moles, based on the total amount of monomers (a?) and (b?), of one or more hydrogenated
comonomer(s).

US Pat. No. 10,256,498

PROCESS FOR MANUFACTURING BATTERY COMPONENTS

SOLVAY SPECIALTY POLYMERS...

1. A process for manufacturing a component of a secondary battery, said process comprising:(i) preparing a liquid composition, wherein the liquid composition comprises:
a liquid medium selected from the group consisting of aliphatic ketones, cycloaliphatic ketones, cycloaliphatic esters and mixtures thereof, and
at least one fluorinated polymer (F), wherein polymer consists of:
(a) from 1.5% to 3.5% by moles of recurring units derived from hexafluoropropylene (HFP),
(b) from 0.5% to 1.5% by moles of recurring units derived from at least one (meth)acrylic monomer (MA) of formula (III):

wherein:
R?1, R?2 and R?3 are hydrogen atoms, and
R?x is a hydrogen atom or a C1-C5 hydrocarbon moiety comprising at least one hydroxyl group, and
(c) recurring units derived from vinylidene fluoride (VDF) in an amount that is complement to 100% by moles of total recurring units,
wherein at least 8% by weight of polymer (F), based on the total volume of the liquid composition, dissolves in the liquid medium at temperatures comprised between 20° C. and 80° C.; and
(ii) processing said liquid composition to provide a film.
US Pat. No. 10,023,670

PERFLUOROELASTOMER

SOLVAY SPECIALTY POLYMERS...

1. A peroxide curable perfluoroelastomer comprising:recurring units derived from tetrafluoroethylene (TFE);
recurring units derived from perfluoroethylvinylether (EVE), in an amount of between 2 and 17% by moles, with respect to total recurring units derived from TFE, perfluoromethylvinylether (MVE) and EVE;
recurring units derived from perfluoromethylvinylether (MVE), in an amount of between 23 and 35% by moles, with respect to total recurring units derived from TFE, perfluoromethylvinylether (MVE) and EVE; and
iodine and/or bromine atoms in the chain and/or in the end position of the perfluoroelastomer chain,
wherein, after curing, the perfluoroelastomer exhibits a compression set of 38% or less at temperatures of 200° C. for 70 hours when determined on type 214 O-rings according to ASTM D395 and D1414 standards.
US Pat. No. 9,701,766

HYDROPHILIC VINYLIDENE FLUORIDE POLYMERS

SOLVAY SPECIALTY POLYMERS...

1. A process for the manufacture of a grafted fluorinated polymer comprising at least one grafted side chain comprising one
or more glycosidic recurring units [polymer (F)], said process comprising polymerizing:
vinylidene fluoride (VDF),
optionally, one or more other fluorinated monomers, and
optionally, one or more (meth)acrylic monomers,
in the presence of at least one polysaccharide derivative, said polysaccharide derivative having a dynamic viscosity of at
most 12 mPa×s, as measured according to ASTM D445 at 20° C. in an aqueous solution at a concentration of 2% by weight.

US Pat. No. 9,568,250

METHOD FOR TRANSFERRING HEAT

SOLVAY SPECIALTY POLYMERS...

1. A method for transferring heat, said method comprising:
(1) transferring heat from a body to a first heat transfer system by means of a secondary loop passageway comprising a heat
transfer fluid and, optionally,

(2) transferring heat from a second heat transfer system to said body by means of said secondary loop passageway comprising
said heat transfer fluid, wherein:

said second heat transfer system is the same as or different from said first heat transfer system;
said secondary loop passageway comprises at least one polymer sealant selected from the group consisting of a rubber seal
and a plastic pipe; and

said heat transfer fluid comprises one or more linear perfluoropolyethers having formula (I-bis):
R?F—(OCF2)n?(OCF2CF2)m?—OR?F  (I-bis)

wherein RF, equal or different at each occurrence, is a C1-C3 perfluoroalkyl group, and m? and n? are integers greater than 0 and up to 50, m?/n? being between 0.1 and 10,

and wherein said heat transfer fluid is circulated through said secondary loop passageway in step (1) for transferring said
heat from said body to said first heat transfer system and, optionally, in step (2) for transferring said heat from said second
heat transfer system to said body.

US Pat. No. 10,208,136

PROCESS FOR THE ISOLATION OF SULFONYL FLUORIDE POLYMERS AND POLYMERS OBTAINED THEREFROM

SOLVAY SPECIALTY POLYMERS...

1. A process for the isolation of a polymer from a polymerization latex, the process comprising adding said latex under high shear stirring to an aqueous electrolyte solution held at a temperature equal to or lower than the glass transition temperature of the polymer wherein said polymer comprises recurring units derived from at least one ethylenically unsaturated (per)fluorinated monomer (A) containing at least one sulfonyl fluoride group, wherein said polymer exhibits a loss of weight at 200° C. lower than 1% as measured by thermogravimetric analysis according to ASTM E1131-86, and wherein said polymer exhibits a melt flow rate measured according to ASTM D1238-04 at 200° C./5kg of less than 50 g/10 min.
US Pat. No. 10,173,177

PROCESS FOR THE PREPARATION OF ETHYLENE/CHLOROTRIFLUOROETHYLENE POLYMER MEMBRANES

SOLVAY SPECIALTY POLYMERS...

1. A process for the preparation of an ethylene/chlorotrifluoroethylene polymer membrane comprising the steps of:preparing a polymer solution comprising an ethylene/chlorotrifluoroethylene polymer in a solvent, wherein the polymer in the polymer solution consists essentially of ethylene/chlorotrifluoroethylene polymer that has a melting temperature not exceeding 200° C.;
casting the ethylene/chlorotrifluoroethylene polymer solution into a film;
immersing the film in a non-solvent bath to precipitate the polymer via diffusion induced phase separation;
wherein the solvent is selected from the group consisting of N-methyl-2-pyrrolidone, dimethylformamide, acetone, dimethylacetamide, tetrahydrofuran, methyl ethyl ketone, dimethylsulfoxide, dioxane, ethyl acetate, propylene carbonate, and mixtures thereof.

US Pat. No. 10,208,147

FLUOROALLYLSULFONYL AZIDE MONOMERS AND POLYMERS THERE FROM

Solvay Specialty Polymers...

1. A sulfonyl azide allylic monomer of formula (I):CF2=CF—CF2—O—Rf—SO2N3  (I)
wherein Rf is a divalent (per)fluorinated group, optionally comprising one or more than one ethereal oxygen atom.
US Pat. No. 10,081,691

CROSSLINKABLE COMPOSITIONS BASED ON VINYLIDENE FLUORIDE-TRIFLUOROETHYLENE POLYMERS

SOLVAY SPECIALTY POLYMERS...

1. A crosslinkable composition comprising:at least one semi-crystalline fluoropolymer (F) possessing a detectable melting point when submitted to DSC measurements according to ASTM D3418 and comprising recurring units derived from vinylidene fluoride (VDF) and from 10% to 50% by moles with respect to the total moles of recurring units of fluoropolymer (F) of recurring units derived from trifluoroethylene (TrFE); and
at least one crosslinking agent (Cz) of formula (A):
{N3[S(O)g1]s1}na—(RH)nh—Rf—(R?H)nh?—{[S(O)g2]S2N3}na?  (A)wherein each of g1 and g2, equal to or different from each other, is 1 or 2, each of s1 and s2, equal to or different from each other, is 0 or 1, each of na and na? is independently zero or an integer of 1 to 3, provided that the sum na+na? is at least 2, each of RH and R?H, equal to or different from each other, is a C1-C12 hydrocarbon group free of fluorine atoms, nh and nh?, equal or different from each other are independently 0 or 1, and Rf is selected from the group consisting of i) a C3-C20 fluorocarbon group, optionally comprising one or more ethereal oxygen atoms, and ii) an oligomer comprising copolymerized units of vinylidene fluoride and trifluoroethylene.

US Pat. No. 10,082,236

MULTILAYER ASSEMBLY

SOLVAY SPECIALTY POLYMERS...

1. A multilayer assembly comprising:a layer (L1) consisting of a composition (C1), wherein composition (C1) comprises at least one metal compound (M), said layer (L1) having a first surface and a second surface,
a layer (L2) consisting of a composition (C2), wherein composition (C2) comprises at least one epoxy resin (E1), said layer (L2) having a first surface and a second surface, wherein the first surface of layer (L2) is directly adhered to the second surface of layer (L1), and
a layer (L3) consisting of a composition (C3), wherein composition (C3) comprises at least one functional fluoropolymer [functional polymer (F1)] comprising recurring units derived from at least one (meth)acrylic monomer (MA) of formula (I):
wherein each of R1, R2 and R3, equal to or different from each other, is independently a hydrogen atom or a C1-C3 hydrocarbon group, and ROH is a C1-05 hydrocarbon group comprising at least one hydroxyl group, said layer (L3) having a first surface and a second surface, wherein the first surface of layer (L3) is directly adhered to the second surface of layer (L2).

US Pat. No. 10,308,830

FLUOROPOLYMER COMPOSITION

SOLVAY SPECIALTY POLYMERS...

1. A fluoropolymer composition comprising:at least one fluoropolymer [polymer (A)];
at least one benzoxazine compound [compound (B)] of formula (I):

wherein each of Ra, equal to or different at each occurrence, is H or a C1-C12 alkyl group;
Rb is a C1-C36 hydrocarbon group, optionally comprising heteroatoms, optionally comprising at least one benzoxazine group; j is zero or an integer of 1 to 4;
and each of Rc, equal or different at each occurrence, is a halogen or a C1-C36 hydrocarbon group, optionally comprising heteroatoms, optionally comprising at least one benzoxazine group;
at least one aromatic polyimide polymer [polymer (PI)]; and
an organic solvent [solvent (S)].
US Pat. No. 10,179,836

BIFUNCTIONAL FLUORINATED POLYMERS COMPRISING A PLURALITY OF (PER)FLUOROPOLYETHER SEGMENTS

SOLVAY SPECIALTY POLYMERS...

1. A polymer (P) comprising a plurality of (per)fluoropolyether (PFPE) segments (SRF) joined together by hydrogenated (poly)ether segments (SH), said polymer (P) having two end groups (E), each group (E) comprising a hydroxy or a sulfonate group,wherein the hydrogenated (poly)ether segments segments (SH), independently at each occurrence, comply with formula (SH-1):
—Rh—O-Rh?—  (SH-I)
wherein (Rh) and (Rh?), equal to or different from one another, are selected from straight or branched divalent alkylene segments, each comprising at least one carbon atom: when (Rh) and (Rh?) comprise more than one carbon atom, they can optionally be interrupted by one or more ethereal oxygen atomswith the proviso that the hydrogenated (poly)ether segments (SH) are not segments of formula —CH2OCH2OCH2—.
US Pat. No. 10,446,865

LIQUID COMPOSITION FOR PROTON EXCHANGE MEMBRANES

SOLVAY SPECIALTY POLYMERS...

1. A composition (C) comprising:a liquid medium (L);
at least one polymer [component (I)] comprising recurring units derived from at least one ethylenically unsaturated fluorinated monomer containing at least one —SO3Z group, wherein Z is H, an alkaline metal ion or NH4+[monomer (A)] and recurring units derived from at least one ethylenically unsaturated fluorinated monomer [monomer (B)]; and
at least one perfluoroelastomer [component (II)], wherein component (II) comprises recurring units derived from C3-C8 perfluoroolefins and CF2?CFORf (per)fluoro-alkylvinylethers wherein Rf is a C1-C6 perfluoroalkyl group,wherein the weight ratio between said component (I) and said component (II) is from 95/5 to 70/30.
US Pat. No. 10,442,893

(PER)FLUOROPOLYETHER POLYMERS

SOLVAY SPECIALTY POLYMERS...

1. A polymer (P), wherein polymer (P) is selected from the group consisting of:polymers (PN) comprising:
one (per)fluoropolyether chain (Rpf) and
at least one chain (C) comprising at least one hydroxy group and at least one amino group,
wherein chain (Rpf) is a chain of formula —(CFX)aO(Rf)(CFX')b?, wherein
a and b, equal or different from each other, are equal to or higher than 1;
X and X?, equal or different from each other, are —F or —CF3, provided that when a and/or b are higher than 1, X and X? are —F; and
(Rf) comprises repeating units R°, said repeating units being independently selected from the group consisting of:
 (i-a) —CF(CF3)O—;
 (ii-a) —CFXCFXO—, wherein X, equal or different at each occurrence, is F or CF3, with the proviso that at least one of X is —CF3;
 (iii-a) —CF2CF2CF2O—;
 (iv-a) —CF2CF2CF2CF2O—;
 (v-a) —(CF2)j—CFZ—O— wherein j is an integer from 0 to 3 and Z is a group of general formula —O—R(f-a)—T, wherein R(f-a) is a fluoropolyoxyalkene chain comprising a number of repeating units from 0 to 10, said recurring units being selected from: —CFXO—, —CF2CFXO—, —CF2CF2CF2O—, —CF2CF2CF2CF2O—, with each of each of X being independently F or CF3 and T being a C1—C3 perfluoroalkyl group; and
polymers (PN*) comprising
at least two (per)fluoropolyether chains (Rpf), each chain (Rpf) having two chain ends, wherein:
said at least two chains (Rpf) are linked together at one chain end through a divalent chain (*C*) comprising at least one hydroxy group and at least two amino groups, and
at least one of said at least two chains (Rpf) bears on its opposite chain end a monovalent chain (C*) comprising at least one hydroxy group and at least one amino group; and
wherein each chain (Rpf) is independently a chain of formula —(CFX)aO(Rf)(CFX?)b—, wherein
a and b, equal or different from each other, are equal to or higher than 1;
X and X?, equal or different from each other, are —F or —CF3, provided that when a and/or b are higher than 1, X and X? are —F;
(Rf) comprises repeating units R°, said repeating units being independently selected from the group consisting of:
 (i) —CFXO—, wherein X is F or CF3;
 (ii) —CFXCFXO—, wherein X, equal or different at each occurrence, is F or CF3, with the proviso that at least one of X is —F;
 (iii) —CF2CF2CW2O—, wherein each of W, equal or different from each other, is F, Cl, or H;
 (iv) —CF2CF2CF2CF2O—; and
 (v) —(CF2)j—CFZ—O— wherein j is an integer from 0 to 3 and Z is a group of general formula —O—R(f-a)—T, wherein R(f-a) is a fluoropolyoxyalkene chain comprising a number of repeating units from 0 to 10, said recurring units being selected from: —CFXO—, —CF2CFXO—, —CF2CF2CF2O—, —CF2CF2CF2CF2O—, with each of each of X being independently F or CF3 and T being a C1—C3 perfluoroalkyl group.
US Pat. No. 10,428,211

FLUOROPOLYMER COMPOSITION FOR MOBILE ELECTRONIC DEVICE

SOLVAY SPECIALTY POLYMERS...

1. A fluoropolymer composition (C), said composition (C) comprising:at least one vinylidene fluoride (VDF) homopolymer [PVDF] in an amount of from 55 to 85% wt, said PVDF possessing a first molecular weight (MPVDF);
at least one VDF semi-crystalline copolymer comprising recurring units derived from VDF and recurring units derived from HFP [VDF copolymer] in an amount of from 15 to 45% wt, said VDF copolymer possessing a second molecular weight (MVDF copolymer) such that MVDF copolymer is higher than MPVDF;
the % wt being with respect to the sum of weights of PVDF and VDF copolymer, and
at least one high density ethylene polymer (PE), comprising more than 70% weight of recurring units derived from ethylene, and optionally comprising recurring units derived from at least one alpha-olefin different from ethylene, said polymer (PE) possessing a density of from 930 to 970 kg/m3, said polymer (PE) being comprised in an amount of at least 0.05 weight parts and at most 5 weight parts, per 100 weight parts of combined amount of PVDF and VDF copolymer.
US Pat. No. 10,414,844

CROSSLINKABLE VINYLIDENE FLUORIDE AND TRIFLUOROETHYLENE POLYMERS

SOLVAY SPECIALTY POLYMERS...

1. A semi-crystalline fluoropolymer (F) comprising:recurring units derived from vinylidene fluoride (VDF);
from 10% to 50% by moles with respect to the total moles of recurring units of fluoropolymer (F) of recurring units derived from trifluoroethylene (TrFE); and
from 0.01% to 10% by moles with respect to the total moles of recurring units of fluoropolymer (F) of recurring units derived from at least one monomer (Az) comprising an azide group.

US Pat. No. 10,414,861

ZWITTERIONIC DERIVATIVES OF (PER)FLUOROPOLYETHERS

SOLVAY SPECIALTY POLYMERS...

1. A polymer comprising a (per)fluoropolyether chain (Rf) having two ends, wherein one or both ends comprise(s) at least one zwitterionic group (Zw), wherein each at least one zwitterionic group (Zw) is a group of formula (Zw-1), formula (Zw-2a) or formula (Zw-2b):-Cat1+-S1zw-An?  (Zw-1)wherein:Cat1+ represents NR?R?, wherein R? and R? are each independently methyl;
S1zw is a straight alkylene chain comprising 1 to 10 carbon atoms; and
An? represents —COO—,(Zw-2a):(Zw-2b):

US Pat. No. 10,414,703

PROCESSES FOR THE SYNTHESIS OF 1,2,3,4-TETRACHLORO-HEXAFLUORO-BUTANE

SOLVAY SPECIALTY POLYMERS...

1. A process for the production of 1,2,3,4-tetrachloro-hexafluoro-butane, said process comprising one of the following reactions:[a] fluorination of 1,2,3,4-tetrachlorobutane, or
[b] fluorination of 1,2,3,4-tetrachloro-1,4-difluoro-1,3-butadiene, or
[c] fluorodimerization of 1,2-dichlorodifluoroethylene,wherein said process comprising performing the reaction in a microreactor.
US Pat. No. 10,377,843

METHOD FOR THE CONTROLLED POLYMERIZATION OF FLUOROMONOMERS

SOLVAY SPECIALTY POLYMERS...

1. A method for emulsion polymerization of at least one fluoromonomer, said method comprising:(i) providing at least one aqueous emulsion comprising:
at least one surfactant,
a mixture (M), wherein mixture (M) is a monomer mixture comprising at least one monomer (F), wherein monomer (F) is a fluoromonomer, and optionally at least one additional monomer, and
at least one RAFT/MADIX agent;
(ii) initiating the polymerization of said monomer mixture in said aqueous emulsion adding at least one radical initiator;
(iii) continuing the polymerization by adding additional amounts of said mixture (M) and said RAFT/MADIX agent, until converting a targeted amount of said mixture (M), and
(iv) terminating the polymerization and recovering a latex of polymer (F), wherein polymer (F) is a fluoropolymer;
wherein the amount of RAFT/MADIX agent is comprised between 0.05 and 0.5% moles, with respect to the total amount of converted monomers of said monomer mixture, and
wherein the amount of said RAFT/MADIX agent present in the aqueous emulsion when initiating the polymerization in step (ii) is of at most 50% with respect to the total amount of said RAFT/MADIX agent.
US Pat. No. 10,377,857

POLYAMIDES MODIFIED WITH (PER)FLUOROPOLYETHER SEGMENTS

SOLVAY SPECIALTY POLYMERS...

1. A polyamide (PA) consisting of recurring units derived from monomers (A) and (B), wherein monomer (A) is selected from at least one of:(i) a mixture of:
one or more hydrogenated aliphatic, cycloaliphatic or aromatic diamine(s) [amine (NN)] or derivative(s) thereof; and
one or more hydrogenated aliphatic, cycloaliphatic or aromatic dicarboxylic acid(s) [acid (DA)] or derivative(s) thereof; and
(ii) one or more aminoacid(s) [aminoacid (AN)] or lactam(s) [lactam (L)], and wherein monomer (B) is at least one (per)fluoropolyether monomer (PFPE-M) selected from a PFPE-diamine (PFPE-NN) and PFPE-dicarboxylic acid (PFPE-DA), wherein the amount of monomer (B) ranges from 0.1 to 10% wt with respect to the overall weight of monomers (A) and (B).
US Pat. No. 10,370,462

MELT-PROCESSABLE PERFLUOROPOLYMERS HAVING IMPROVED THERMAL AND MECHANICAL PROPERTIES AFTER HEATING TREATMENT

SOLVAY SPECIALTY POLYMERS...

1. A method for heat treating a composition (C) which contains at least one melt-processible perfluoropolymer [polymer (F)], the process comprising at least the step of heat-treating the composition (C) at a temperature of at least 260° C., wherein polymer (F) is formed of tetrafluoroethylene (TFE) copolymer with one or more perfluorinated comonomers [comonomer (F)] containing at least one ethylene unsaturation in amounts from 0.5% to 13% by weight, and wherein polymer (F) possesses reactive end groups comprising at least one of the group consisting of hydrogen atoms, oxygen atoms and ethylenically unsaturated double bonds in an amount of at least 4.5 mmol/kg.

US Pat. No. 10,333,146

ELECTRODE-FORMING COMPOSITION

SOLVAY SPECIALTY POLYMERS...

1. An aqueous electrode-forming composition comprising:at least one polymer (F), wherein polymer (F) is a fluoropolymer;
particles of at least one powdery active electrode material (P), said particles (P) comprising a core of an active electrode compound (E) and an outer layer of a metallic compound (M) different from Lithium, said outer layer surrounding said core,
wherein compound (M) is one of Rh, Ir, Ru, Ti, Re, Os, Cd, Tl, Pb, Bi, In, Sb, Al, Ti, Cu, Ni, Pd, V, Fe, Cr, Mn, Co, Zn, Mo, W, Ag, Au, Pt, Ir, Ru, Pd, Sn, Ge, and Ga or is an alloy of one or more of Rh, Ir, Ru, Ti, Re, Os, Cd, Tl, Pb, Bi, In, Sb, Al, Ti, Cu, Ni, Pd, V, Fe, Cr, Mn, Co, Zn, Mo, W, Ag, Au, Pt, Ir, Ru, Pd, Sn, Ge, and Ga,
wherein compound (E) is different from compound (M) and is an active cathode compound (E+) selected from the group consisting of composite metal chalcogenides represented by a general formula of LiMY2, wherein M denotes at least one transition metal, selected from Co, Ni, Fe, Mn, Cr and V; and Y denotes a chalcogen, selected from O and S; and
water.
US Pat. No. 10,246,572

FOAMABLE FLUOROPOLYMER COMPOSITIONS

SOLVAY SPECIALTY POLYMERS...

1. A foamable thermoplastic fluoropolymer composition comprising:at least one melt-processible fluoropolymer [polymer (A)]; and
at least one perfluoroalkoxysulphonic derivative selected from the following compounds:
CF3—(CF2)w—OCF2CF2—SO3?(Zp+)1/p  (i)
wherein w is an integer from 1 to 3, Z is NH4 or an alkaline or alkali-earth metal cation, and
p is the valence of the cation Z;
CF3—(CF2)w?OCF2CF2—OCF2CF2—SO3?(Zp+)1/p  (ii)
wherein w? is an integer from 0 to 2, Z is NH4 or an alkaline or alkali-earth metal cation, and
p is the valence of the cation Z; and
CF3—(CF2)q—(OCF2CFXF)r—OCF2CF2—SO3?(Zp+)1/p  (iii)
wherein q and r are each independently an integer from 1 to 3, XF is F or CF3, Z is NH4 or an alkaline or alkali-earth metal cation, and p is the valence of the cation Z.

US Pat. No. 10,450,657

ELECTRODE-FORMING COMPOSITION

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1. An electrode-forming composition comprising:(a) at least one fluoropolymer [polymer (F)];
(b) particles of at least one active electrode material [particles (P)], said particles (P) comprising:
a core comprising at least one active electrode compound (NMC) of formula (I-B):
Li[Lix?(NiP?MnQ?CoW?)1-x?]O2  (I-B)
wherein x? is equal to 0, P? is comprised between 0.2 and 0.8, Q? is comprised between 0.1 and 0.4, and W? is comprised between 0.1 and 0.4, with the proviso that the sum (P?+Q?+W?) is equal to 1, and
an outer layer consisting of a metal compound (M), said compound (M) consisting of one or more metals selected from the group consisting of Ni, Cu, Al, Ag and alloys thereof, in their elemental oxidation state,
said outer layer at least partially surrounding said core; and
(c) a liquid medium (L).
US Pat. No. 10,455,696

ELECTRICALLY CONDUCTING ASSEMBLIES

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1. A process for the manufacture of a multilayer assembly, said process comprising:applying a patterned layer (LMP) of at least one patterned substrate directly onto a non-patterned layer (LMT) of at least one non-patterned substrate, thereby providing a multilayer assembly, wherein:
(1) the at least one patterned substrate is obtained by a process comprising:
printing a liquid composition (L1) comprising at least one first metal compound (M1) onto at least one surface of an optically transparent substrate layer (LT-1) having an outer surface and an inner surface to form a patterned layer (LMP), thus providing a patterned substrate,
optionally, contacting the patterned layer (LMP) with a liquid composition (L2) comprising at least one second metal compound (M2), said compound (M2) being equal to or different from the compound (M1), and
drying the patterned substrate, optionally contacted with composition (L2), at a temperature of at least 50° C.; and wherein
(2) the at least one non-patterned substrate is obtained by a process comprising:
optionally, treating by a radio-frequency glow discharge process in the presence of an etching gas, at least one surface of an optically transparent substrate layer (LT-2) having an outer surface and an inner surface, said layer (LT-2) being equal to or different from layer (LT-1),
contacting optionally treated layer (LT-2) with a liquid composition (L3) comprising at least one optically transparent metal compound (Mot), to form an optically transparent non-patterned layer (LMT), thus providing a non-patterned substrate, and
drying the non-patterned substrate at a temperature of at least 50° C.
US Pat. No. 10,358,551

FLUOROELASTOMER COMPOSITION

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1. A (per)fluoroelastomer composition comprising:at least one (per)fluoroelastomer [fluoroelastomer (A)]; and
from 0.1 to 50 weight parts, per 100 parts by weight of said fluoroelastomer (A) of alkaline-earth metal carbonate particles [particles (P)], each said particle comprising:(a) a core consisting essentially of at least one alkaline-earth metal carbonate; and(b) a shell consisting essentially of at least one Group IV transition metal compound.
US Pat. No. 10,351,669

AMINO DERIVATIVES OF PERFLUOROPOLYETHERS

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1. A polymer (P) comprising:at least one aromatic moiety (A) optionally substituted with at least one halogen atom,
at least one (per)fluoropolyether chain (Rpf) linked to moiety (A), and
at least one amino group (N) linked to moiety (A) through an alkylenyl bridging group (RH)comprising from 1 to 12 carbon atoms and at least one heteroatom directly bonded to moiety (A).
US Pat. No. 10,280,247

NON-AQUEOUS CROSS-LINKABLE FLUOROPOLYMER COMPOSITIONS

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1. A non-aqueous fluoropolymer composition (FC) comprising:at least one fluorinated ionisable polymer (A) comprising recurring (per)fluorinated blocks (F), recurring functional blocks (Ba) and at least one curable group (C), said blocks (Ba) comprising at least one ionisable anionic group (I?);
at least one fluorinated ionisable polymer (B) comprising recurring (per)fluorinated blocks (F), recurring functional blocks (Bb) and at least one curable group (C), said blocks (Bb) comprising at least one ionisable cationic group (I+);
at least one fluorinated solvent (F); and
at least one solvent (S) different from said solvent (F).
US Pat. No. 9,991,057

HYBRID FLUOROPOLYMER COMPOSITION

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1. A process for manufacturing a fluoropolymer hybrid organic/inorganic composite, said process comprising:(i) providing a mixture comprising:
(a) at least one polymer (F), wherein polymer (F) is a fluoropolymer comprising recurring units derived from at least one fluorinated monomer and at least one comonomer (MA) comprising at least one hydroxyl group;
(b) at least one metal compound (M) of formula (I):
X4-mAYm  (I)
 wherein m is an integer from 1 to 4, A is a metal selected from the group consisting of Si, Ti and Zr, Y is a hydrolysable group, and X is a hydrocarbon group, optionally comprising one or more functional groups;
(c) a liquid medium comprising at least one compound selected from the group consisting of a diester of formula (IIde) and an ester-amide of formula (IIea):
R1—OOC—Zde—COO—R2  (IIde)
R1—OOC—Zea—CO—NR3R4  (IIea)
 wherein:
R1 and R2, equal to or different from each other, are independently selected from the group consisting of C1-C20 hydrocarbon groups,
R3 and R4, equal to or different from each other, are independently selected from the group consisting of hydrogen, C1-C36 hydrocarbon groups, optionally substituted, or wherein R3 and R4 form a cyclic moiety including the nitrogen atom to which they are bound, said cyclic moiety being optionally substituted and/or optionally comprising one or more than one additional heteroatom, and mixtures thereof,
Zde and Zea, equal to or different from each other, are independently a linear or branched C3-C10 divalent alkylene group; and
(d) optionally, at least one electrolytic salt (ES);
(ii) reacting at least a fraction of hydroxyl groups of said comonomer (MA) of said polymer (F) with at least a fraction of the hydrolysable groups Y of said compound (M), so as to obtain polymer (Fg), wherein polymer (Fg) is a grafted fluoropolymer comprising one or more pendant groups of formula —Ym-1AX4-m; and
(iii) hydrolysing and/or polycondensing said compound (M) and/or said pendant groups of formula —Ym-1AX4-m to yield a liquid mixture comprising the fluoropolymer hybrid organic/inorganic composite and said liquid medium.