Aqueous dispersion or emulsion of film-forming binders

Claim 1

An aqueous film-forming binder dispersion or emulsion comprising: (A) an unsaturated polyester resin produced from 1 mole of maleic anhydride, 0.55 mole of propanediol-1,2, and 1 mole of trimethylol propane diallyl ether, said polyester resin having an acid number between 1 and 50, an OH number between 10 and 120, and a mean molecular weight between 300 and 5,000; and (B) an acrylate polymer produced from esters of methacrylic acid or acrylic acid with lower aliphatic alcohols having 1 to 3 carbon atoms or mixtures thereof with other copolymerizable monomers selected from the group consisting of styrene, vinyltoluene and methacrylic acid, said polymer having a film-forming temperature of above 60° C.

Claim 7

A method for producing a rapid-hardening coating on a substrate comprising mixing a dispersion or emulsion comprising: (A) an unsaturated polyester resin produced from 1 mole of maleic anhydride, 0.55 mole of propanediol-1,2, and 1 mole of trimethylol propane diallyl ether, said polyester resin having an acid number between 1 and 50, an OH number between 10 and 120, and a mean molecular weight between 300 and 5,000; (B) an acrylate polymer produced from esters of methacrylic acid or acrylic acid with lower aliphatic alcohols having 1 to 3 carbon atoms or mixtures thereof with other copolymerizable monomers selected from the group consisting of styrene, vinyltoluene and methacrylic acid, said polymer having a film-forming temperature of above 60° C.; and (C) a water-soluble cobalt acceleration; and (D) a water-soluble peroxide hardener, and applying said mixture to said substrate to form a coating and hardening the coating at a temperature of about 80° C. for a time of 2 to 60 seconds to a non-tacky and stackable film.

Claim 8

A method for producing a rapid-hardening coating on a substrate comprising mixing a dispersion or emulsion comprising: (A) an unsaturated polyester resin produced from 1 mole of maleic anhydride, 0.55 mole of propanediol-1,2, and 1 mole of trimethylol propane diallyl ether, said polyester resin having an acid number between 1 and 50, an OH number between 10 and 120, and a mean molecular weight between 300 and 5,000; (B) an acrylate polymer produced from esters of methacrylic acid or acrylic acid with lower aliphatic alcohols having 1 to 3 carbon atoms or mixtures thereof with other copolymerizable monomers selected from the group consisting of styrene, vinyltoluene and methacrylic acid, said polymer having a film-forming temperature of above 60° C.; and (C) a water-soluble cobalt acceleration; and (D) a water-soluble peroxide hardener, and applying said mixture to said substrate to form a coating and hardening the coating at a temperature of about 80° C. for a time of 2 to 60 seconds to a non-tacky and stackable film.