Aqueous epoxy resin dispersions

Details Aqueous epoxy resin dispersions Aqueous epoxy resin dispersions

C - Chemistry, Metallurgy

08

L

C08L 63/00 (2006.01) C08G 59/04 (2006.01) C09D 163/00 (2006.01)

Patent

CA 2118834

Abstract of the disclosure Aqueous epoxy resin dispersions Aqueous epoxy resin dispersions containing (A) an epoxy resin which is a condensation product of one or more epoxy compound(s), of an aromatic polyol and, if used, of a modifying compound having at least two groups which are reactive with epoxides, (B) a dispersing agent in the form of a condensation product of an aliphatic polyol and an epoxy com- pound, the equivalent ratio of the OH groups to the epoxy groups being 1 : 0.8 to 1 : 3.5, (C) a carboxyl-containing or -releasing curing agent for the epoxy resin comprising one or more carboxyl- containing compound(s), at least one of these compounds having a functionality of at least three carboxyl groups per molecule, and (D) if desired customary additives, components (A), (B) and (C) being used in such amounts by weight that the equivalent ratio of the epoxy groups of component (A) capable of reacting to the carboxyl groups of component (B) is at least 1 : 0.5.

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