Patent ID: 9475265
Filing Date: 2016-10-25
CPC Classification: B29C,B29K,B32B,C08J,C08K,C08L,Y10T

Claim Text:
1. A composite structure comprising: a polyamide matrix resin composition comprising from 0.1 to at or about 3 weight percent of a copper based heat stabilizer based on the weight of the polyamide matrix resin composition; a fibrous material selected from woven or non-woven structures, felts, knits, braids, textiles, fibrous battings or mats, and combinations of these; and a polyamide surface resin composition comprising 0.1 to 3 weight percent of a surface heat stabilizer based on the weight of the polyamide surface resin composition; wherein: the surface heat stabilizer is not a copper based heat stabilizer and does not contain copper or copper ions; the surface heat stabilizer is a polyhydric alcohol selected from the group consisting of pentaerythritol, dipentaerythritol, tripentaerythritol, di-trimethylopropane, D-mannitol, D-sorbitol, xylitol and mixtures thereof; and wherein the fibrous material is impregnated with the polyamide matrix resin composition.