PROCESS FOR PRODUCING POLYAMIDE EXCELLENT IN FLEXIBILITY AND TRANSPARENCY

摘要

PURPOSE: Provided is a process for producing polyamide excellent in flexibility and transparency, thus the produced polyamide has a comparatively low melting point but has the strength capable of injection and the transparency. CONSTITUTION: The polyamide is produced by injecting simultaneously and polymerizing 60-80wt% of salts of polyether diamine and aromatic carboxylic acid and 20-40wt% of caprolactam, wherein the aromatic carboxylic acid is a terephthalic acid or a mixture comprising the terephthalic acid and less than 30wt%(based on the total carboxylic acid) of isophthalic acid.