| 摘要 |
PROBLEM TO BE SOLVED: To provide a rust preventive paint composition for steel plates with favorable storage stability, and particularly excellent in acid and alkali resistance in a coated film, workability and rust preventive properties, and the like. SOLUTION: The rust preventive paint composition for steel plate includes a water dispersed solution of an acryl-polyurethane urea resin obtained by a polymerization reaction of (A) polyurethane resin with reaction components of (a1-1) polyols including polycarbonate polyol, (a1-2) polyols including an anionic functional group, (a2) polyisocyanates including an aliphatic diisocyanate, (a3) an acrylic compound having an active hydrogen containing group and (a4) polyamines and/or polyhydrazines, and (B) a polymeric monomer including (b1) (meth)acrylic acid alkyl esters shown by general formula (1): CH<SB>2</SB>=CR<SP>1</SP>COOR<SP>2</SP>(wherein R<SP>1</SP>represents a hydrogen atom or methyl group and R<SP>2</SP>represents a 1C-18C alkyl group), in the presence of water. COPYRIGHT: (C)2010,JPO&INPIT
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