Patent ID: 7897685
Filing Date: 2011-03-01
Classification: C08F,C08G,C08L,C09J

Abstract:
1. A polymer composition consisting essentially of: about 60 to about 95 wt % of at least one thermoplastic elastomer that consists essentially of a copolyetheramide of the formula wherein “PA” represents a linear saturated aliphatic polyamide sequence formed from a lactam or amino acid having a hydrocarbon chain containing 4 to 14 carbon atoms, or from an aliphatic C 6 to C 9 diamine, in the presence of a chain-limiting aliphatic carboxylic diacid having 4 to 20 carbon atoms; wherein the polyamide has an average molecular weight between 300 and 15,000 Daltons; wherein “PE” represents a polyoxyalkylene sequence formed from linear or branched aliphatic polyoxyalkylene glycols, mixtures thereof or copolyethers derived therefrom, said polyoxyalkylene glycols having a molecular weight of less than or equal to 6000 Daltons; and wherein the number of repeat units, “n”, is sufficient so that the polyetheramide copolymer has an intrinsic viscosity measured in metacresol at 25° C. of from about 0.8 to about 2.05; and about 5 to about 40 wt % of at least one maleated ethylene copolymer, based on the total weight of the polymer composition; wherein said at least one maleated ethylene copolymer comprises a grafted copolymer that is the reaction product of a monomer and an ethylene copolymer, wherein said monomer is selected from the group consisting of maleic anhydride, maleic acid, esters of maleic anhydride and half-esters of maleic anhydride and wherein said ethylene copolymer is selected from the group consisting of a copolymer of ethylene, alkyl acrylate, and carbon monoxide; and a copolymer of ethylene, vinyl acetate, and carbon monoxide.