Patent ID: 8236922
Filing Date: 2012-08-07
Classification: C08G,C09D,Y10S

Abstract:
1. A polyamide made by reacting a dicarboxylic acid with a mixture of diisocyanates comprises from 20 weight percent to 50 weight percent of cis-1,3-bis(isocyanatomethyl)cyclohexane, from 5 weight percent to 35 weight percent of trans-1,3-bis(isocyanatomethyl)cyclohexane, from 5 weight percent to 30 weight percent of cis-1,4-bis(isocyanatomethyl)cyclohexane, and from 15 weight percent to 50 weight percent of trans-1,4-bis(isocyanatomethyl)cyclohexane, wherein the weight percent are based on total weight of the mixture of diisocyanates.