AQUEOUS POLYMER DISPERSION, RUST RESISTING COATING AND COATED BASE MATERIAL

摘要

PROBLEM TO BE SOLVED: To obtain a binder for rust resisting coatings capable of forming good coating film protecting from corrosion without adding a rust resisting pigment. SOLUTION: This aqueous polymer dispersion is obtained by the emulsion polymerization of a mixture A comprising 50-100 wt.% of a 1-18C alkyl (meth) acrylate, a vinyl ester, a vinyl aromatic compound or their mixture in the presence of a protective colloid comprising 2-40 wt.% of a copolymerizable ethylene- based unsaturated compound (monomer) having at least one phosphate residue or a phosphonate residue, 0-98 wt.% of a 1-18C alkyl (meth)acrylate, a vinyl ester or a vinylaromatic compound and 0-50 wt.% of other monomers.