Epoxy-modified polyamide resin.

摘要

An epoxy-modified polyamide resin is obtained by reacting (A) a diisocyanate with (B) at least one of a 5 dicarboxylic acid and a tricarboxylic acid anhydride in a nitrogen-containing aprotic solvent to form a polyamide resin intermediate and reacting this polyamide resin intermediate with (C) an epoxy resin in the nitrogen-containing aprotic solvent. This epoxy-modified polyamide resin has a high 10 molecular weight and can provide a film with excellent heat resistance arid flexibility, and its composition can be used as a coating material, adhesive or similar.