Abstract: A cold setting coating composition comprises an urethane-modified vinyl resin (A) produced by reacting a reaction product with an isocyanate group-possessing compound (c). The reaction product is produced by reacting an epoxy group-containing vinyl copolymer (a) with a fatty acid component (b) containing an unsaturated fatty acid. The vinyl copolymer (a) is a copolymer of a first polymerizable unsaturated monomer containing an epoxy group and a second polymerizable unsaturated monomer. The composition also comprises a polymer dispersion (B) obtained by polymerizing two or more of vinyl monomers in the presence of a dispersion stabilizer (d) in an organic liquid in which vinyl monomers are soluble and a polymer formed from the monomers is insoluble. The dispersion stabilizer (d) is soluble in the organic liquid. The coating composition improved weathering resistance and water resistance of the resulting coated film.

Abstract: The present invention provides production processes of aqueous alkyd resin dispersions, said processes comprising a step of synthesizing alkyd resin by dissolving polyester resin whose chief component is terephthalic acid and which has been recovered from waste materials and regenerated, in a mixture of an alcoholic component, fatty acid and/or oil and fat, and polybasic acid component, said alcoholic component containing tri- or lower polyhydric alcohol and tetra- or higher hydric alcohol at a weight ratio of the former/latter within a range of 0-20, to effect depolymerizaiton and concurrently, esterification reaction; if necessary a step of introducing acid radicals into the resin; and a step of neutralizing and/or dispersing with use of surfactant, the so obtained alkyd resin in water. According to the processes of the present invention, aqueous alkyd resin dispersions can be prepared within a short time, using polyester resin which has been recovered from waste materials and regenerated.

Abstract: This invention discloses a process for producing a polyester resin, which is transparent, substantially free of occurrence of foreign matters or filtration residue, and is subject to no problem in physical properties, within short time, by concurrently reacting polyester whose chief starting material is terephthalic acid and which has been recovered from waste materials and regenerated; a polyhydric alcohol component and a polybasic acid component, at such ratios that the regenerated polyester occupies 10-80% by weight based on the total weight of the regenerated polyester, polyhydric alcohol component and polybasic acid component.

Abstract: A cold setting coating composition comprises an urethane-modified vinyl resin (A) produced by reacting a reaction product with an isocyanate group-possessing compound (c). The reaction product is produced by reacting an epoxy group-containing vinyl copolymer (a) with a fatty acid component (b) containing an unsaturated fatty acid. The vinyl copolymer (a) is a copolymer of a first polymerizable unsaturated monomer containing an epoxy group and a second polymerizable unsaturated monomer. The composition also comprises a polymer dispersion (B) obtained by polymerizing two or more of vinyl monomers in the presence of a dispersion stabilizer (d) in an organic liquid in which vinyl monomers are soluble and a polymer formed from the monomers is insoluble. The dispersion stabilizer (d) is soluble in the organic liquid. The coating composition improved weathering resistance and water resistance of the resulting coated film.

Abstract: Processes for producing within a short time transparent alkyd resins which are substantially free of occurrence of foreign matters or filtration residues are disclosed, which comprise depolymerizing polyester resins whose chief starting material is terephthalic acid and which have been recovered from waste materials and regenerated, with use of a polyhydric alcohol component having tetra- or higher hydric alcohol, and thereafter adding thereto a polybasic acid component (and if necessary a fatty acid component) to effect an esterification reaction.

Abstract: A process is disclosed, which enables production of alkyd resins within a short time, by conducting depolymerization and esterification reactions of polyester resins whose main starting material is terephthalic acid and which have been recovered from waste materials and regenerated, in a mixture of a polyhydric alcoholic component comprising tetra- or higher alcohol, an oil and fat and/or a fatty acid, and a polybasic acid component.

Abstract: The present invention provides production processes of aqueous alkyd resin dispersions, said processes comprising a step of synthesizing alkyd resin by dissolving polyester resin whose chief component is terephthalic acid and which has been recovered from waste materials and regenerated, in a mixture of an alcoholic component, fatty acid and/or oil and fat, and polybasic acid component, said alcoholic component containing tri- or lower polyhydric alcohol and tetra- or higher hydric alcohol at a weight ratio of the former/latter within a range of 0-20, to effect depolymerizaiton and concurrently, esterification reaction; if necessary a step of introducing acid radicals into the resin; and a step of neutralizing and/or dispersing with use of surfactant, the so obtained alkyd resin in water. According to the processes of the present invention, aqueous alkyd resin dispersions can be prepared within a short time, using polyester resin which has been recovered from waste materials and regenerated.

Abstract: A process is disclosed, which enables production of alkyd resins within a short time, by conducting depolymerization and esterification reactions of polyester resins whose main starting material is terephthalic acid and which have been recovered from waste materials and regenerated, in a mixture of a polyhydric alcoholic component comprising tetra- or higher alcohol, an oil and fat and/or a fatty acid, and a polybasic acid component.

Abstract: This invention discloses a process for producing a polyester resin, which is transparent, substantially free of occurrence of foreign matters or filtration residue, and is subject to no problem in physical properties, within short time, by concurrently reacting polyester whose chief starting material is terephthalic acid and which has been recovered from waste materials and regenerated; a polyhydric alcohol component and a polybasic acid component, at such ratios that the regenerated polyester occupies 10-80% by weight based on the total weight of the regenerated polyester, polyhydric alcohol component and polybasic acid component.

Abstract: A curable composition, which can be easily decomposed and removed by means of a mixed solution of acid, water, and optionally an organic solvent, is provided.

Abstract: The invention relates to a curable coating composition comprising:(a) a hydroxyl-containing polyester resin having a solubility parameter in the range of 10.0 to 12.0,(b) a polyepoxide,(c) a silicon compound having 1 to 20 silicon atoms in one molecule and represented by the rational formulaSiO.sub.(4-(a+b))/2 (OR.sup.1).sub.a (OR.sup.2).sub.b (1)wherein R.sup.1 is an alkyl group having 1 to 3 carbon atoms, or a hydrogen atom, R.sup.2 is an aryl group, an aralkyl group, or a monovalent hydrocarbon group containing an ether linkage and/or ester linkage and having 4 to 24 carbon atoms, a represents a number between 0.10 to 3.95 and b represents a number between 0.05 and 1.95, provided that a+b=4 or less,(d) at least one chelate compound selected from the group consisting of aluminum chelate compounds, titanium chelate compounds, zirconium chelate compounds and tin chelate compounds, and(e) an organic solvent.

Abstract: A living polymerization method in which an organic aluminum compound having a bulky substituent group is used as a cocatalyst in the living polymerization of a (meth)acrylic acid ester, an epoxide or a lactone in the presence of a metal porphyrin complex as a polymerization initiator.