Abstract: The present invention provides a low viscosity curable resin composition and coating composition containing the same which has a decreased solvent content. The coating composition provides a cured film having not only excellent acid resistance but also good weather resistance and mar resistance without an adverse effect to the environment. The curable resin composition comprises (a) a hydroxyl and carboxyl group containing silicone polymer, (b) a carboxyl and carboxylate group containing polymer, and (c) a hydroxyl and epoxy group containing polymer.

Abstract: The present invention provides a low viscosity curable resin composition and coating composition containing the same which has a decreased solvent content. The coating composition provides a cured film having not only excellent acid resistance but also good weather resistance and mar resistance without an adverse effect to the environment. The curable resin composition comprises (a) a hydroxyl and carboxyl group containing silicone polymer, (b) a carboxyl and carboxylate group containing polymer, and (c) a hydroxyl and epoxy group containing polymer.

Abstract: Multilayer metallic coating is formed on a substrate by applying a base coating composition containing a metallic pigment, applying a clear top coating composition on the base coating wet-on-wet, and curing both coatings simultaneously. The coating compositions contain a film-forming polymer having a plurality of crosslinkable function groups, a crosslinker an organic liquid diluent, internally crosslinked polymer microparticles and an organic acid catalyst masked with an organic base capable of accelerating the crosslinking reaction between the film-forming polymer and the crosslinker.

Abstract: A clear top coat composition comprising a film-forming acrylic polymer having a plurality of cross-linkable functional groups, a volatile organic liquid diluent capable of carring the film-forming polymer, a cross-linking agent for the film-forming polymer, and internally cross-linked polymer microgel particles stably dispersed in the mixture of the film-forming polymer, the diluent and the cross-linking agent. The composition is applied wet-on-wet a metallic color base coat having a similar composition containing the microgel particles and a metallic flake pigment, and cured simultaneously with the base coat.

Abstract: A dispersion stabilizer for dispersing solid particles into a liquid medium, which comprises resin particles bearing a zwitter-ionic group in the molecule, said resin particles each having substantially an average particle size of not more than 1500 .ANG. when measured by electron microscopic observation.

Abstract: A clear or colored top coating composition containing internally cross-linked microgel particles is disclosed. The microgel particles are produced by emulsion-polymerizing a monomer mixture of ethylenically unsaturated monomers including at least one cross-linking monomer and have a refraction index which is equal or close (.ltoreq.0.05) to that of a surrounding film-forming polymer fully cured with a cross-linking agent.

Abstract: A composition forming coated films having an excellent chipping resistance, containing:A. at least one polyester resin derived from (1) at least one acid component selected from the group consisting of dibasic acids and derivatives thereof and (2) at least one alcohol component selected from the group consisting of polyhydric alcohols and derivatives thereof; andB. at least one aminoplast resin having a number-average molecular weight of 800 to 1400,The polyester resin containing at least 20% by weight of the acid component being an aliphatic dibasic acid having 4 to 10 carbon atoms and at least 20% by weight of the alcohol component being a dihydric alcohol having 2 to 6 carbon atoms, the polyester resin having a number-average molecular weight of 2000 to 4000, a hydroxyl number of 30 to 75 and an acid number of 5 to 15.The weight ratio of the polyester resin to the aminoplast resin is 60/40 to 95/5.

Abstract: This invention relates to a plating-inhibitor used in partially plating a steel plate with a molten metal, characterized by comprising (a) one or more water-soluble phosphate type bases selected from the group consisting of metal phosphates, metal condensed phosphates and their modified metal phosphates, a part of the water-soluble phosphate type bases being optionally replaced by one or more of the group of alkali metal silicates, quaternary ammonium silicate, silica sol and alumina sol; and (b) one or more inorganic inert powdery materials which are heat-resistant and substantially non-reactive with the molten metal.