SEMI-AROMATIC POLYAMIDE RESIN

摘要

A semi-aromatic polyamide resin is provided which has a high level of residence stability, hot-water resistance and chemical resistance and is also excellent in adhesive properties and compatibility with other resins and the like. The semi-aromatic polyamide resin comprises:
dicarboxylic acid units in which 50 to 100 mol% of the dicarboxylic acid units are aromatic dicarboxylic acid units; and diamine units in which 60 to 100 mol% of the diamine units are aliphatic diamine units having 9 to 13 carbon atoms. Furthermore, at least 10% of terminal groups of molecular chains of the polyamide resin are blocked with a terminal-blocking agent, and the amount of terminal amino groups of the molecular chains is 60 µeq/g or more and 120 µeq/g or less. In addition, [NH 2 ] / [COOH] ‰¥ 6 is satisfied, where [NH 2 ] (µeq/g) represents the amount of the terminal amino groups and [COOH] (µeq/g)represents the amount of terminal carboxyl groups.