Patent ID: 6590063
Filing Date: 2003-07-08
Classification: C08G,C09J,D01F,Y10S,Y10T

Abstract:
A copolyamide comprising:10 to 45 mol-% caprolactam; 30 to 55 mol-% laurolactam; 20 to 50 mol-% of at least two dicarboxylic acids, the dicarboxylic acids being aliphatic &agr;,&ohgr;-dicarboxylic acids with 6 up to 14 C atoms inclusively, terephthalic acid, isophthalic acid, or 2,6-naphthalene dicarboxylic acid, wherein the content of aromatic dicarboxylic acids is lower than 10 mol-%, with reference to the overall amount of the above-mentioned components, which add up to 100 mol-%; and a diamine mixture in an amount that is equimolar to that of the dicarboxylic acids, the diamine mixture being hexamethylene diamine, piperazine, or 2-methyl-1,5-diaminopentane, wherein the molar content of the hexamethylene diamine is between 75 and 95 mol-% with reference to the diamine mixture.