Patent ID: 9315625
Filing Date: 2016-04-19
CPC Classification: C08G,C08L,Y10T

Claim Text:
1. A polyamide comprising units derived from: (A) a diamine comprising in its structure at least one cyclohexane fragment according to Structure I, in which the substituents are in the 1,4-trans-position,  wherein n is a positive integer of at least 1, with the proviso that when n is 2 or higher the cyclohexane rings are connected to each other through the 1,4-trans position, and (B) an aliphatic dicarboxylic acid selected from the group consisting of 18 octadecanedioc acid, 1, 19-nonadecanedioic acid and fatty acids having between 13 and 22 carbon atoms, wherein 1) the units derived from the diamine (A) make up more than 40 mol % based on the total amount of diamines, and wherein 2) the units derived from the dicarboxylic acid (B) make up at least 70 mol % of the total of dicarboxylic acids.