Patent ID: 8557393

Claim:
An adhesive thermoplastic elastomer composition comprising: (a) from 60 to 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 comprising (i) from 2 to 10 weight percent, based upon the TPV, of a thermoplastic resin; (ii) from 2 to 50 weight percent, based upon the TPV, of a thermoplastic propylene/ethylene random or block copolymer; (iii) from 45 to 96 weight percent, based upon the TPV, of a cross-linked elastomer; and (iv) from 100 to 225 phr of process oil; and (b) from 40 to 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 wt % but less than 17 wt %, based on the weight of the functionalized thermoplastic resin.