Polyamide resin and its production.

摘要

A polyamide resin has a relative viscosity of 2.5 to 6 and 40 to 100% of its end groups are substituted by C6-22 hydrocarbon groups. The resin may be made by polycondensation in the presence of a monoamine and/or a monocarboxylic acid providing such groups or the resin may be made by polycondensation followed by postcondensation with a monoamine and/or a monocarboxylic acid providing such groups.