摘要:
The present invention provides (1) a self-crosslinking resin (I) having a carboxyl group, a blocked isocyanate group and a hydroxyl group in the molecule and characterized in that the resin is prepared from a vinyl polymer (A) having at least two free isocyanate groups in the molecule and a polyester resin (B) having at least two hydroxyl groups and at least one carboxyl group in the molecule by reacting some of the hydroxyl groups of the resin (B) with some of the free isocyanate groups of the polymer (A), and subsequently reacting a blocking agent with all the remaining free isocyanate groups, and (2) a self-crosslinking resin (II) having a carboxyl group, a blocked isocyanate group and a hydroxyl group in the molecule and characterized in that the resin is prepared from a vinyl polymer (C) having a free isocyanate group and a blocked isocyanate group in the molecule and the polyester resin (B) having at least two hydroxyl groups and at least one carboxyl group in the molecule by reacting some of the hydroxyl groups of the resin (B) with all the free isocyanate groups of the polymer (C).
摘要:
A thermosetting coating composition comprising as essential components:(a) a hydroxyl group-containing base resin,(b) an alicyclic polyepoxide crosslinking agent, and(c) a catalyst selected from the group consisting of a quaternary ammonium hydroxide and a metal chelate.
摘要:
The invention provides a self-curing resin which contains one or more blocked isocyanate groups and one or more hydroxyl groups in the molecule and which is produced by polymerizing a monomer component containing an isocyanate-containing, radical-polymerizable monomer as an essential monomer thereof, blocking part of the isocyanate groups in the resulting polymer and then reacting the remaining unblocked isocyanate group or groups with an alkanolamine for hydroxyl group introduction into the polymer.
摘要:
A process for preparing a stable dispersion in an aqueous medium of particles of polymer, said process comprising the steps of:(a) reacting at least one radically polymerizable monomer in an organic liquid in the presence of a dispersion stabilizer for the particles to form particles of polymer insoluble in said organic liquid and water, said stabilizer being a resin having in each of its molecules on the average at least 0.3 unit of a polymerizable double bond and a functional group that can be neutralized with an acid or a base, said resin being capable of being emulsifiably dispersed or dissolved in an aqueous medium by neutralization;(b) neutralizing with acids or bases the functional group of the resin as a dispersion stabilizer; and(c) replacing the organic liquid of the resulting dispersion of polymer particles with an aqueous medium.
摘要:
The present invention provides a method for forming a multi-layer coating film by applying a colored clear coating (B) containing a color pigment and/or a glittering material, on the film of a leafing type aluminum flake-containing metallic coating (A), wherein the colored clear coating (B) also contains a polymer formed from an unsaturated monomer having a phosphoric acid group represented by --O--PO(OH)(R.sub.1) (wherein R.sub.1 is a hydroxyl group, a phenyl group or a C.sub.1-20 alkyl group) and a hydroxyl group-containing unsaturated monomer. The method can form a multi-layer coating film improved in interlayer adhesivity between the metallic coating film and the colored clear coating film, without reducing the excellent effects and metallic feeling provided by a metallic coating film containing leafing type aluminum flake.
摘要:
An object of the present invention is to provide a heat-curable high solid coating composition capable of forming a coating film which is excellent in both acid resistance and scratch resistance, and a method for forming a topcoat using said composition. The present invention provides a heat-curable high solid coating composition comprising: (A) a carboxyl-containing compound, (B) a vinyl polymer having an epoxy group, a hydroxyl group and a hydrolyzable alkoxysilyl group in one molecule, (C) a reactive organopolysiloxane, and (D) a crosslinked particulate polymer. The present invention also provides a method for forming a topcoat using said composition.
摘要:
A self-crosslinking resin comprising a resin containing a blocked isocyanate group, and a resin containing a hydroxyl group, and a tertiary amino group and/or a quaternary ammonium group and attached to the resin by a urethane bond.The self-crosslinking resins are useful for adhesive compositions and coating compositions of the aqueous type.
摘要:
(1) A coating resin composition consisting essentially of a self-crosslinking resin (I) having at least one hydroxyl group and at least one blocked isocyanate group in the molecule wherein the resin (I) is prepared by reacting some of the free isocyanate groups of a vinyl polymer (A) having at least two free isocyanate groups in the molecule with some of the hydroxyl groups of a polyolefin resin (B) having at least two hydroxyl groups in the molecule, and subsequently reacting a blocking agent with the remaining free isocyanate groups, and (2) a coating resin composition consisting essentially of a self-crosslinking resin (II) having at least one hydroxyl group and at least one blocked isocyanate group in the molecule wherein the resin (II) is prepared by reacting all free isocyanate groups of a vinyl polymer (C) having at least one free isocyanate group and at least one blocked isocyanate group in the molecule with some of the hydroxyl groups of a polyolefin resin (B) having at least two hydroxyl groups in the molecule.
摘要:
A dispersion of reactive polymer particles obtained by polymerization of monomer in an organic liquid which dissolves the monomer but does not dissolve a polymer formed from the monomer, in the presence of a dispersion stabilizer composed of a high molecular weight polymer; characterized in that (i) said dispersion stabilizer is a high molecular weight polymer which is obtained by polymerization of an ethylenically unsaturated monomer and soluble in the above organic liquid and which contains a chemically reactive group (A); that (ii) said polymer particles are particles of a high molecular weight polymer which are obtained by polymerization of an ethylenically unsaturated monomer and contain a complementary chemically reactive group (B) capable of mutually reacting with the chemically reactive group (A); and that (iii) the chemically reactive group (A) and the chemically reactive group (B) are present stably in the dispersion. This dispersion is useful in coating compositions such as an adhesive, coating, etc.
摘要:
A method of producing a dispersion of fine particles of a gelled polymer, which comprises polymerizing a vinyl monomer mixture containing at least two vinyl monomers having complementary functional groups capable of being bonded to each other by reaction each in an amount of at least 0.5% by weight, or a vinyl monomer mixture containing at least 0.5% by weight of a polyvinyl monomer containing at least two polymerizable double bonds in an organic liquid incapable of dissolving the polymer formed from the monomer mixture, in the presence of a macromer having a number average molecular weight of at least 1,000 resulting from introduction of polymerizable double bonds into a self-condensation product of 12-hydroxystearic acid, the number of the polymerizable double bonds being 0.7 to 1.0 per molecule of the self-condensation product on an average.