Patent ID: 8933167
Filing Date: 2015-01-13
Classification: C08G,C08K,C08L

Abstract:
1. A polyamide comprising: (a) a unit comprising adipic acid and hexamethylenediamine; and (b) a unit comprising isophthalic acid and hexamethylenediamine, wherein a molar ratio (x) of an isophthalic acid component to a total carboxylic acid component in the polyamide is 0.05≦(x)≦0.5 and a range of (Y) represented by the following formula (1) is −0.3≦(Y)≦0.8, wherein wherein (EG) represents a ratio of an isophthalic acid end group to a total carboxyl end group contained in the polyamide and is represented by the following formula (2) wherein the ratio (x) of the isophthalic acid component, the amount of isophthalic acid end group, and the total amount of carboxyl end group are values determined by a nuclear magnetic resonance method, and the amount of the isophthalic acid end groups and the total amount of carboxyl end groups are measured in units of meg/kg.