CURING AGENT FOR COATING COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a curing agent for aqueous epoxy resin to form a coating composition or coating material having relatively long pot life in the case of using in the reaction with an epoxy resin.

SOLUTION: The curing agent for an aqueous epoxy resin is produced by reacting a mixture of an epoxidized polyalkylene oxide, an epoxidized aromatic hydroxy compound and an aromatic hydroxy compound to form the first intermediate product, reacting the first intermediate product with a polyamine to obtain the second intermediate product and finally reacting the second intermediate product with a compound (F), wherein the compound (F) is selected from a monofunctional epoxy compound having terminal epoxy group and a 4-20C straight or branched carbon chain and a glycidyl ether of an aliphatic and aromatic hydrocarbon and at least 1% and at most 99% of the primary amino group in the second intermediate product may not participate in the reaction.

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