Patents

Adhesive Thermoplastic Vulcanizates

March 25, 2014

U.S 8,557,393 B2
ExxonMobil Chemical Patents Inc has obtained a patent for an adhesive thermoplastic elastomer composition comprised of from 60-80 weight percent, based on the weight of the adhesive thermoplastic elastomer, of a TPV having a Shore A hardness of less than 45 and comprised of from two-10 weight percent, based upon the TPV, of a thermoplastic resin; from two-50 weight percent, based upon the TPV, of a thermoplastic propylene/ethylene random or block copolymer; from 45-96 weight percent, based upon the TPV, of a cross-linked elastomer; and  from 100-225 phr of process oil; and from 40-20 weight percent, based on the weight of the adhesive thermoplastic elastomer, of an unsaturated carboxylic acid functionalized thermoplastic resin, wherein the thermoplastic resin of the unsaturated carboxylic acid functionalized thermoplastic resin is a thermoplastic polyolefin resin, and, wherein the unsaturated carboxylic acid is acrylic acid or methacrylic acid; wherein the carboxylic acid content of the functionalized thermoplastic resin is greater than 6.5 weight percent but less than 17 weight percent, based on the weight of the functionalized thermoplastic resin.

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