Heat stable polyphase polyamide compositions and preparation thereof
First Claim
1. A heat-stable polyphase polyamido composition of matter having enhanced mechanical properties, comprising (i) from 55 to 99% by weight of a nylon polyamide resin matrix, the polyamide resin matrix having a number-average molecular weight of at least 5,000, and (ii) from 1 to 45% by weight of a particulate disperse phase comprising a polyamide sufficiently incompatible with the polyamide resin matrix to provide a polyphase composition, the particulates having a particle size ranging from 0.01 to 10 microns, and the disperse phase comprising a polyamide having a content in amide groups of less than 40% of the amide groups comprising said polyamide matrix resin and the disperse phase having a glass transition temperature of less than 5°
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Abstract
Provided are heat-stable polyphase polyamido compositions having improved mechanical properties which comprise (i) from 50 to 99% by weight of a nylon polyamide resin matrix and (ii) from 1 to 50% by weight of a particulate disperse phase comprising a polyamide incompatible with the polyamide resin matrix, and methods for the preparation thereof. Shaped articles comprising said compositions exhibit improved physical properties, particularly with regard to impact strength.
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22 Claims
- 1. A heat-stable polyphase polyamido composition of matter having enhanced mechanical properties, comprising (i) from 55 to 99% by weight of a nylon polyamide resin matrix, the polyamide resin matrix having a number-average molecular weight of at least 5,000, and (ii) from 1 to 45% by weight of a particulate disperse phase comprising a polyamide sufficiently incompatible with the polyamide resin matrix to provide a polyphase composition, the particulates having a particle size ranging from 0.01 to 10 microns, and the disperse phase comprising a polyamide having a content in amide groups of less than 40% of the amide groups comprising said polyamide matrix resin and the disperse phase having a glass transition temperature of less than 5°
Specification