Abstract: A method includes a step of applying an aqueous 2-package type first colored paint to form an uncured first colored coating film; a step of applying an aqueous 1-package type second colored paint to form an uncured second colored coating film; a step of applying a solvent-based 2-package type clear paint to form an uncured clear coating film; and a step of heating the uncured first colored coating film, the uncured second colored coating film and the uncured clear coating film to 75 to 100° C. to simultaneously cure these films. The solvent-based 2-package type clear paint contains a hydroxyl group-containing acrylic resin and a polyisocyanate compound in a ratio of 1.5 to 2.0 equivalents of isocyanate groups in the polyisocyanate compound relative to 1 equivalent of hydroxyl groups in the hydroxyl group-containing acrylic resin.

Abstract: A method for forming a multilayer coating film, sequentially conducting step (1) of applying an aqueous 2-package type first colored paint on both a metal member and a plastic member of an automobile outer panel to form an uncured first colored coating film; step (2) of applying an aqueous 1-package type white paint on the uncured first colored coating film by step (1) to form an uncured white coating film; step (3) of applying an aqueous 1-package type interference color paint on the uncured white coating film by step (2) to form an uncured interference color coating film; step (4) of applying a solvent-based 2-package type clear paint on the uncured interference color coating film by step (3) to form an uncured clear coating film; and step (5) of heating these coating films by steps (1) to (4) at 75 to 100° C. to simultaneously cure them.

Abstract: A method includes a step of applying an aqueous 2-package type first colored paint to form an uncured first colored coating film; a step of applying an aqueous 1-package type second colored paint to form an uncured second colored coating film; a step of applying a solvent-based 2-package type clear paint to form an uncured clear coating film; and a step of heating the uncured first colored coating film, the uncured second colored coating film and the uncured clear coating film to 75 to 100° C. to simultaneously cure these films. The solvent-based 2-package type clear paint contains a hydroxyl group-containing acrylic resin and a polyisocyanate compound in a ratio of 1.5 to 2.0 equivalents of isocyanate groups in the polyisocyanate compound relative to 1 equivalent of hydroxyl groups in the hydroxyl group-containing acrylic resin.

Abstract: There is provided a starch-based coating composition with excellent storage stability as a one-pack type paint, which can form coating films with excellent drying property, finished appearances, pencil hardness, mar resistance, adhesion, alkali resistance, solvent resistance and weather resistance, as well as coated articles that have been coated with the starch-based coating composition. The starch-based coating composition comprises as the binder a resin composition obtained by reacting (A) starch and/or modified starch with (B) an isocyanate group-containing compound obtained by reacting a polyisocyanate compound (b1) and a polyhydric alcohol (b2), or by reaction of these components with a resin obtained by radical polymerization of a mixture comprising an aromatic-based radical polymerizing unsaturated monomer, a hydroxyl group-containing radical polymerizing unsaturated monomer and optionally another radical polymerizing unsaturated monomer.

Abstract: A starch-based coating composition that utilizes naturally derived biodegradable starch and exhibits excellent storage stability as an one-pack lacquer, and that can form coated films with superiority in terms of finished appearance, hardness, adhesion, chemical resistance and alkali resistance. The binder used is a resin (A) obtained by bonding a vinyl polymer onto starch and/or modified starch by graft polymerization, or a resin (C) obtained by reacting the resin (A) with an isocyanate group-containing product (B) obtained by reacting a polyisocyanate compound (b1) with a polyhydric alcohol (b2).

Abstract: There is provided a starch-based coating composition with excellent storage stability as a one-pack type paint, which can form coating films with excellent drying property, finished appearances, pencil hardness, mar resistance, adhesion, alkali resistance, solvent resistance and weather resistance, as well as coated articles that have been coated with the starch-based coating composition. The starch-based coating composition comprises as the binder a resin composition obtained by reacting (A) starch and/or modified starch with (B) an isocyanate group-containing compound obtained by reacting a polyisocyanate compound (b1) and a polyhydric alcohol (b2), or by reaction of these components with a resin obtained by radical polymerization of a mixture comprising an aromatic-based radical polymerizing unsaturated monomer, a hydroxyl group-containing radical polymerizing unsaturated monomer and optionally another radical polymerizing unsaturated monomer.

Abstract: A workability-improving agent for improvingt the workability of cementitious compositions comprises at least one polyalkylene oxide derivative represented by the formula (I): R1—(CO)a—(O)b-(AO)n—X, wherein R1 is a hydrocarbon group of from 3 to 18 carbon atoms or a residual group of a polyamine derivative; a and b are 0 or 1; AO is an alkylene oxide of from 2 to 3 carbon atoms; (AO)n is a homopolymer or a block or random copolymer of alkylene oxide units of from 2 to 3 carbon atoms, n is an integer of from 1 to 30; X is H, methyl, ethyl, propyl, butyl, SO3Y1 is H, Na and NH4; and/or a hydrocarbon derivative of formula (II): R2—(CO)c—OH wherein R2 is a aliphatic hydrocarbon group of 8 to 18 carbon atoms, and c is an integer of 0 or 1.

Abstract: An admixture for ultra-dry-mix concrete is disclosed containing one or more varieties of cement dispersing agents (A) selected from a group consisting of lignosulfonates, oxycarboxylates and polycarboxylates, and in addition, containing one or more varieties of nonionic surface-active agents (B) selected from a group consisting of polyoxyalkylene alkylaryl and alkyl ethers with a hydrophilic-lipophilic balance (HLB-value) of 8 to 17.