Polyamidoamine curing agents based on mixtures of fatty and aromatic carboxylic acids

摘要

Compositions of amine terminated polyamidoamine resins useful for curing epoxy resins are disclosed comprising combinations of fatty monocarboxylic acids, aromatic mono- and dicarboxylic acids, and polyethyleneamines, wherein the ratio of equivalents of fatty monocarboxylic acid to aromatic monocarboxylic acid can range from about 1:0.2 to about 1:1.5, the ratio of equivalents of monocarboxylic acids to aromatic dicarboxylic acid can range from about 1:0.1 to about 1:0.6, and the ratio of moles of total polyamine to equivalents of total acid can range from about 0.8:1 to about 1.3:1. Coating compositions comprising these polyamidoamine resins are also disclosed.