Thermosetting water-based paint and coating film-forming methods
AssigneeKansai Paint Co., Ltd.
InventorsNoritoshi Nakane, Yoshiyuki Yukawa
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Abstract
The invention discloses thermosetting water-based paint comprising water-dispersible acrylic polymer particles which are obtained through multi-stage emulsion polymerization of radical polymerizable unsaturated monomers using a specific reactive emulsifying agent, said monomers comprising amido-containing radical polymerizable unsaturated monomer having at least 2 radical polymerizable unsaturated groups per molecule, methacrylic acid and hydroxyl-containing radical polymerizable unsaturated monomer; and coating film-forming methods which use the thermosetting water-based paint.
Claims20
Thermosetting water-based paint comprising water-dispersible acrylic polymer particles (A), crosslinking agent (B) and pigment (C), which is characterized in that the water-dispersible acrylic polymer particles (A) are obtained by multi-stage emulsion polymerization of radical polymerizable unsaturated monomeric component using ammonium salt of sulfonic acid group-containing compound as a reactive emulsifying agent and that the particles have a hydroxyl value within a range of 1-70 mgKOH/g and an acid value within a range of 5-90 mgKOH/g, the radical polymerizable unsaturated monomeric component comprising amido-containing radical polymerizable unsaturated monomer having at least two radical polymerizable unsaturated groups per molecule, methacrylic acid and hydroxyl-containing radical polymerizable unsaturated monomer, and the content of the amido-containing radical polymerizable unsaturated monomer being within a range of 0.1-5% by weight, based on the total radical polymerizable unsaturated monomeric component.
Dependencies are inferred from the claim text.