US 5,344,856 A · Water-emulsifiable epoxy resin composition

Abstract

The invention is a water dispersible epoxy resin composition comprising: (A) the reaction product of; (i) one or more polyepoxides; (ii) optionally, one or more poly(aromatic hydroxy) containing compounds, (iii) optionally, one or more chain terminators; and (iv) one or more nominally difunctional C.sub.12-36 fatty acids or a dimer of an unsaturated, fatty acid, and B) a sufficient amount of a surfactant to form a stable dispersion of the epoxy resin in water wherein the surfactant comprises an alkyl aryloxy poly(propyleneoxy) poly(ethyleneoxy) ethanol, a C.sub.12-36 hydrocarbyloxy poly(propyleneoxy) poly(ethyleneoxy) ethanol or a C.sub.12-36 hydrocarbylcarboxyloxy poly(propyleneoxy) poly(ethyleneoxy) ethanol. In another aspect the invention is a high solid aqueous emulsion of such epoxy resin reaction product and surfactant. In yet another aspect, the invention is a coating composition comprising an aqueous emulsion containing the hereinbefore describe epoxy resin coating composition, and a water-soluble dispersible, or emulsifiable curing agent or hardener for such epoxy resin composition.

Claims16

Dependent claims

A water emulsifiable epoxy resin composition comprising:

A) the reaction product of
i) from about 40 to about 95 parts by weight of one or more polyepoxides;
ii) from about 0 to about 15 parts by weight of one or more polyaromatic hydroxy containing compounds;
iii) from about 0 to about 10 parts by weight of one or more chain terminators which comprises a monofunctional compound containing an active hydrogen containing moiety reactive with an epoxy moiety;
iv) from about 5 to about 25 parts by weight of one or more nominally difunctional C.sub.12-36 fatty acids or dimers of unsaturated fatty acids;
wherein the total amount of parts i), ii), iii) and iv) is 100 and the reaction product has terminal epoxy moieties;
B) a sufficient amount of a surfactant to form a stable emulsion of the reaction product (A) in water wherein the surfactant comprises an alkyl aryloxy poly(propyleneoxy) poly(ethyleneoxy) ethanol, a C.sub.12-36 hydrocarbyloxy poly(propyleneoxy) poly(ethyleneoxy) ethanol or a hydrocarbylcarbonyloxy poly(prolyleneoxy) poly(ethyleneoxy) ethanol.

4 more elements

A water emulsified epoxy resin composition comprising from 40 to 80 percent by weight of a composition according to claim 1 and 20 to 60 percent by weight of water.

Dependencies are inferred from the claim text.

Water-emulsifiable epoxy resin composition

Life of this patent

Water-emulsifiable epoxy resin composition

Life of this patent

Abstract

Claims16