Patent ID: 8906479
Filing Date: 2014-12-09
Classification: C08L,Y10T

Abstract:
1. A shaped article comprising a polyamide/ionomer blend composition comprising (1) a polyamide having a melt viscosity from 400 Pa·sec to 4000 Pa·sec, measured at 250° C. and a shear rate of 12 sec (2) an ionomer composition in an amount in the range of about 30 to about 65 weight % of the combination of (1) and (2), wherein the ionomer composition comprises at least one neutralized acid copolymer, wherein the acid copolymer comprises copolymerized units of ethylene with (a) copolymerized units of an alpha-beta unsaturated monocarboxylic acid wherein the monocarboxylic acid is methacrylic acid or acrylic acid or a combination thereof; (b) optionally copolymerized units of an alpha-beta unsaturated dicarboxylic acid derivative selected from maleic anhydride and alkyl monoesters of maleic acid or fumaric acid, in the amount of 0 to about 7 weight % of the copolymer; wherein the combination of (a) and (b) is from about 7 to about 21 weight % of the copolymer; (c) optionally copolymerized units of an alkyl acrylate or alkyl methacrylate comonomer, in the amount of 0 to about 25 weight % of the copolymer; and wherein 60 mol % to about 95 mole % of the total carboxylic acid groups in the copolymer are neutralized to salts comprising cations of zinc (Zn) and cations of sodium, wherein Zn cations comprise about 10 to about 90% mole equivalents and sodium cations comprise about 90 to 10% mole equivalents.