Provided is a polyamide resin having excellent heat shrinkability. A polyamide resin which contains three or more types of units, wherein the polyamide resin comprises (A) units derived from a lactam and/or an aminocarboxylic acid, and (B) units derived from an equimolar salt of a diamine and a dicarboxylic acid, wherein (B) the units derived from an equimolar salt of a diamine and a dicarboxylic acid comprise (B-1) units having no alicyclic structure and (B-2) units having an alicyclic structure.
本发明提供了一种具有优异热收缩性的聚酰胺
树脂。一种含有三种或三种以上单元的聚酰胺
树脂,其中聚酰胺
树脂包括(A)由内酰胺和/或
氨基
羧酸衍生的单元,以及(B)由二胺和二
羧酸的等摩尔盐衍生的单元,其中(B)由二胺和二
羧酸的等摩尔盐衍生的单元包括(B-1)无脂环结构的单元和(B-2)有脂环结构的单元。