Metal salt/amine complexes as epoxy resin catalytic curing agents

Abstract

Novel carboxylic acid metal salt/amine complexes are prepared by reacting 1 mol of a carboxylic acid metal salt of the formula (A.sup..crclbar.).sub.2 ME.sup.2+ in which A.sup..crclbar. is the anion of a carboxylic acid which contains polar substituents or radicals and in particular contains an amide or imide grouping, such as a halogenoacetic acid, nitrilo-, cyano- or ureido-acetic acid, monoamidosuccinic acid, succinimidyl- or maleimidyl-alkanecarboxylic acid, benzenesulphonic acid or pyrrolidone-5-carboxylic acid, and Me.sup.2+ is a divalent metal cation, with 1 mol of a diamine of the formula R.sub.1 --NH--R--NH--R.sub.2 in which R is an aliphatic radical having not more than 7 C atoms or is a cycloaliphatic radical and R.sub.1 and R.sub.2 are hydrogen, alkyl having 1 to 4 C atoms, cyclohexyl, benzyl, 2-aminoethyl or 3-aminopropyl, in a polar organic solvent and in the temperature range from 25.degree. to 200.degree. C., to give complex compounds. The novel complex compounds are suitable as catalytic curing agents for epoxide resins.

Dependencies are inferred from the claim text.