US Patent No. 10,066,100

COPOLYESTER/CONTROLLED DISTRIBUTION STYRENIC BLOCK COPOLYMER BLENDS AND METHODS OF MAKING AND USING SAME


Patent No. 10,066,100
Issue Date September 04, 2018
Title Copolyester/controlled Distribution Styrenic Block Copolymer Blends And Methods Of Making And Using Same
Inventorship Marcus Greger, Houston, TX (US)
Assignee Kraton Polymers U.S. LLC, Houston, TX (US)

Claim of US Patent No. 10,066,100

1. A composition consisting essentially of (i) a controlled distribution styrenic block copolymer and (ii) a thermoplastic copolyester wherein the composition has a Shore A hardness of from about 50 to about 90 and a melt flow rate of from about 15 g/10 min. to about 50 g/10 min. as determined in accordance with ASTM D 1238;wherein the thermoplastic copolyester comprises at least one segment containing butylene terephthalate, tetramethylene terephthalate, or ethylene terephthalate units and at least one segment containing poly(alkylene oxide) glycols having a total of about 3 to about 12 carbon atoms;
wherein the controlled distribution styrenic block copolymer has a melt flow rate of greater than 30 g/10 min. as determined in accordance with ASTM 1238 at 230° C. and 2.16 kg.