High impact resistant polyamide

Claim 1

A thermoplastic composition having high impact resistance, said composition consisting essentially of a polyamide matrix resin comprising an amorphous polyamide, said polyamide having an apparent melt viscosity of 3000 poise or more, said polyamide being present in the composition in the amount of about 75 to 85% by weight of the composition, and at least 15% by weight of the composition toughener particles that are dispersed in said polyamide matrix resin said toughener particles having a particle size, as determined by small angle x-ray scattering, of less than about 360 nm, said toughener particles being formed from 4 to 20 weight percent, based on the thermoplastic composition, of a copolymer of the class consisting of (a) copolymer having a Mooney viscosity of 40 to 60, containing 63 to 73 weight percent ethylene, 24 to 30 weight percent propylene, 3.0 to 6.5% by weight hexadiene, and 0 to 0.536% by weight norbornadiene, grafted with succinic anhydride groups in the amount of 0.25 to 2.25 weight percent of the copolymer; or (b) mixtures of (a) with the ungrafted copolymers of (a), such mixtures containing at least about 35% by weight of (a); with (c) from 5 to 21 weight percent, based on the thermoplastic composition, of an ionomer containing from 40 to 93 weight percent ethylene, from 5 to 60 weight percent an acrylate of the formula ##STR3## wherein --R is an alkyl group containing 2 to 8 carbon atoms, --R' is --H or --CH 3 , and from 2 to 20 weight percent acrylic acid or methacrylic acid wherein from 0 to 100 percent of the acid groups are neutralized with metal ions.