Abstract: A cationic aqueous pigment dispersion comprising a pigment, a dispersing agent and an aqueous medium, in which the dispersing agent is a water-solubilized or water-dispersed product of a copolymer obtained by copolymerization of(A) 3 to 90 parts by weight of a modified vinylic unsaturated monomer having a fatty acid residue with at least 8 carbon atoms at the molecular terminal,(B) 2 to 90 parts by weight of a nitrogen-containing macromonomer having at least one radical-polymerizable functional group selected from acryloyloxy, methacryloyloxy, allyloxy and an aromatic vinyl group at one end,(C) 1 to 50 parts by weight of at least one vinylic monomer selected from aminoalkyl (meth)acrylates, aminoalkyl-(meth)acrylamides and glycidyl group-containing vinylic unsaturated monomers,(D) 0 to 91 parts by weight of an unsaturated monomer having a nitrogen-containing heterocyclic ring, and(E) 0 to 91 parts by weight of an alpha,beta-ethylenically unsaturated monomer other than (A), (B), (C) and (D) above.

Abstract: A cationic electrodeposition coating composition comprising[A] a neutralization product or a quaternary ammonium salt of a comb-shaped copolymer obtained by copolymerizing (a) 3 to 90 parts by weight of an ethylenically unsaturated monomer having a hydrocarbon chain with at least 8 carbon atoms at the molecular ends, (b) 1 to 50 parts by weight of at least one cationic (meth)acrylic monomer selected from the group consisting of aminoalkyl (meth)acrylates, aminoalkyl (meth)acrylamides (meth)acrylates containing a quaternary ammonium salt group and (meth)acrylamides containing a quaternary ammonium salt group, (c) 1 to 60 parts by weight of an alpha,beta-ethylenically unsaturated monomer other than the monomer (b), and (d) 0 to 95 parts by weight of an alpha,beta-ethylenically unsaturated monomer other than the monomers (a), (b) and (c),[B] a cationic epoxy resin capable of being dissolved or dispersed in water, and[C] a pigment.

Abstract: An air-drying aqueous coating composition for electrodeposition comprising[A] a water-solubilized product or a water-dispersed product obtained by reacting (A-1) an epoxy resin and (A-2) a (semi)drying oil fatty acid-modified vinyl polymer having an acid value of 10 to 200 in such proportions that the solids weight ratio of the component (A-1) to the component (A-2) is from 90/10 to 5/95, and[B] an amphoteric organic solvent having affinity for component [A].

Abstract: An air-drying aqueous coating composition for eletrodeposition comprising[A] water-solubilized product or a water-dispersed product obtained by reacting (A-1) an epoxy resin and (A-2) a maleinized product of a (semi)drying oil fatty acid-modified vinyl polymer having an acid value of 10 to 200 in such proportions that the solids weight ratio of the component (A-1) to the component (A-2) is from 90/10 to 5/95, and[B] an amphoteric organic solvent having affinity for component [A].

Abstract: An aqueous coating composition which is characterized in that it contains an aqueous solution or dispersion of a resin formed through copolymerization of a monomeric mixture composed of(A) an ethylenically unsaturated monomer containing at least one urethane linkage and at least two non-conjugated double bonds per molecule 5-98 parts by weight,(B) an ethylenically unsaturated carboxylic 0.5-20 parts by weight, and(C) an ethylenically unsaturated monomer or monomers other than (A) and (B) 0-94.5 parts by weight, the total sum of (A), (B) and (C) components being 100 parts by weight.

Abstract: An aqueous resin composition comprising a neutralization product of an isocyanurate group-containing maleinized alkyd resin having an acid value of 5 to 65 in an aqueous medium, said maleinized alkyd resin being prepared by maleinizing an alkyd resin having an acid value of not more than 10 and a hydroxyl value of not more than 10 which is the product of condensation reaction of(A) 20 to 60% by weight of at least one of drying or semi-drying oils and fatty acids,(B) 10 to 45% by weight of at least one tris(hydroxyalkyl) isocyanurate,(C) 0 to 45% by weight of at least one polyhydric alcohol other than the component (B),(D) 10 to 45% by weight of at least one polybasic acid, and(E) 0 to 15% by weight of at least one monobasic acidand an aqueous emulsion resin composition obtained by emulsion polymerization of a radical polymerizable unsaturated monomer in an aqueous medium in the presence of the aforesaid neutralization product.

Abstract: An aqueous coating composition comprising a resin in a water-soluble or water-dispersible form as a film-forming component, said resin being a copolymer of (A) a fatty acid-modified acrylic monomer comprising the reaction product of an unsaturated fatty acid having at least two non-conjugated double bonds with a hydroxyl-containing acrylic or methacrylic ester, (B) an .alpha.,.beta.-ethylenically unsaturated carboxylic acid, and (C) an unsaturated monomer having a Q value, determined by the Q-e theory, of at least 0.1.

Abstract: An aqueous coating composition comprising as film-forming components[I] a water-soluble or water-dispersible product of a resin (i) obtained by copolymerizing(A) a fatty acid-modified acrylic monomer composed of the reaction product between an unsaturated fatty acid having at least two non-conjugated double bonds and a hydroxyl-containing ester of acrylic or methacrylic acid,(B) an .alpha.,.beta.-ethylenically unsaturated carboxylic acid, and(C) an unsaturated monomer having a Q value in the Q-e theory of at least 0.1, and[II] a vinyl polymer emulsion obtained by polymerizing an unsaturated vinyl monomer in the presence of a water-soluble oxidation-curable resin (ii) as a dispersion stabilizer.

Abstract: An aqueous resin composition cross-linkable by oxidation and prepared by dissolving a radical-polymerizable poly-functional monomer in an aqueous solution of at least one of water-soluble resins having a drying oil fatty acid group or semi-drying oil fatty acid group and neutralized maleates of synthetic petroleum resins having an unsaturated bond of the vinyl or non-vinyl type, and polymerizing the monomer in the solution.

Abstract: An emulsion composition prepared by the emulsion polymerization of a polymerizable vinyl monomer in the presence of an emulsifier characterized in that the emulsifier is a neutralized copolymer of (A) a monomer prepared by being allowed at least one glycidyl ester of arcylic acid and methacrylic acid to react with at least one fatty acid of drying oil fatty acid and semi-drying oil fatty acid, (B) .alpha.,.beta.-ethylenically unsaturated acid and (C) an unsaturated monomer containing substantially no carboxyl group and having a Q value of at least 0.1 as determined by Q-e theory.

Abstract: An emulsion composition prepared by the emulsion polymerization of a polymerizable vinyl monomer in the presence of an emulsifier characterized in that the emusifier is a neutralized maleate, partial maleate, fumarate or partial fumarate of an addition polymerization polymer having as a side chain a drying oil fatty acid residue and/or semi-drying oil fatty acid residue linked to the main chain of the polymer by an ester bond.

Abstract: In an aqueous coating composition comprising a vinyl polymer emulsion prepared by subjecting a vinyl monomer to emulsion polymerization in an aqueous medium in the presence of maleinized polybutadiene used as a dispersion stabilizer, an improvement which is characterized in that at least one copolymer is further incorporated, said copolymer being composed of (A) at least one monomer prepared by reacting one glycidyl ester of acrylic acid and methacrylic acid with at least one fatty acid of drying oil fatty acid and semi-drying oil fatty acid, (B) at least one .alpha.,.beta.-ethylenically unsaturated acid and (C) at least one unsaturated monomer containing substantially no carboxyl group and having a Q value of at least 0.1 as determined by Q-e theory.