High impact polyamides

Claim 1

A polyamide composition comprising: (a) at least 50% of a polyamide resin having a relative viscosity of at least 4.0 measured as a 1% solution in sulfuric acid at 25° C. and having four to eight carbon atoms separating the amide groups thereof; (b) about 5 to 30% of an impact modifier selected from the group consisting of: (i) an olefin-acid copolymer comprising at least 50 mole percent based on the copolymer of an α-alkene having 2 to 10 carbon atoms, or mixtures of such α-alkenes, and 0.2 to 25 mole percent based on the copolymer of an α,β-ethylenically unsaturated carboxylic acid having 3 to 8 carbon atoms, mixtures of such acids, or the salts, esters or anhydrides thereof; (ii) ionomers of the olefin-acid copolymers defined in (i) wherein at least 10% of the carboxylic acid groups are neutralized with metal ions; and (iii) mixtures of (i) and (ii); and (c) about 5 to 30% of a stabilizing polyamide resin which contains at least one long-chain amide-forming monomer component having at least 9 atoms separating the amide-forming sites of said monomer.