US Patent No. 9,992,875

COATED ELECTRICAL ASSEMBLY


Patent No. 9,992,875
Issue Date June 05, 2018
Title Coated Electrical Assembly
Inventorship Elizabeth Williams-Duncan, Nottingham (GB)
Assignee Semblant Limited, Chelsea Harbour, London (GB)

Claim of US Patent No. 9,992,875

1. An electrical assembly comprising:a substrate; and
a conformal coating on at least one surface of the substrate, the conformal coating comprising:
(a) a plasma polymerized polymer of a compound of formula (I) and a fluorohydrocarbon, wherein the molar ratio of the compound of formula (I) to the fluorohydrocarbon is from 5:95 to 50:50:

wherein:
R1 represents C1-C3 alkyl or C2-C3 alkenyl;
R2 represents hydrogen, C1-C3 alkyl or C2-C3 alkenyl;
R3 represents hydrogen, C1-C3 alkyl or C2-C3 alkenyl;
R4 represents hydrogen, C1-C3 alkyl or C2-C3 alkenyl;
R5 represents hydrogen, C1-C3 alkyl or C2-C3 alkenyl; and
R6 represents hydrogen, C1-C3 alkyl or C2-C3 alkenyl, and
(b) a plasma polymerized polymer of a compound of formula (I) on the polymer of (a).