Abstract: An aqueous resin composition comprising prepared by a process comprising the steps of: reacting epoxy resins comprising: (A) an aromatic epoxy resin having a number average molecular weight of at least 9,000 and an epoxy equivalent of not larger than 9,000; and (B) an aromatic epoxy resin having a number average molecular weight of less than 9,000 and an epoxy equivalent of not larger than 5,000, and (C) a carboxyl group-containing acrylic resin having a glass transition temperature of at least 100° C., to undergo partial-esterification to obtain an acryl-modified epoxy resin; neutralizing said acryl-modified epoxy resin with a base and dispersing the neutralized resin in an aqueous medium. Also disclosed is a coated metal material having a cured coated film of the aqueous resin composition.

Abstract: An aqueous resin composition comprising prepared by a process comprising the steps of: reacting epoxy resins comprising: (A) an aromatic epoxy resin having a number average molecular weight of at least 9,000 and an epoxy equivalent of not larger than 9,000; and (B) an aromatic epoxy resin having a number average molecular weight of less than 9,000 and an epoxy equivalent of not larger than 5,000, and (C) a carboxyl group-containing acrylic resin having a glass transition temperature of at least 100° C, to undergo partial-esterification to obtain an acryl-modified epoxy resin; neutralizing said acryl-modified epoxy resin with a base and dispersing the neutralized resin in an aqueous medium. Also disclosed is a coated metal material having a cured coated film of the aqueous resin composition.

Abstract: The present invention relates to an elastic paint composition, having a substantially uniform mixture comprising:(A) a water-based polymer emulsion; containing at least one monomer selected from the group consisting of acrylic esters and methacrylic esters having a glass transition temperature of 30.degree. to -60.degree. C., and(B) (1) a reactive compound dissolved in an organic solvent, selected from the group consisting of a compound having at least three methacryloyl radicals and a molecular weight of at least 200 that becomes hardened by the reaction of their methacryloyl radicals with ultraviolet rays, and(2) a compound having at least one double bond and a molecular weight of at least 300 that becomes hardened by the oxidation reaction at the double bond, wherein the amount of said organic solvent is in the range of 5 to 50 percent, based on the weight of water in said mixture.