PURPOSE: To obtain the dispersions consisting of solid copolymers of acryl monomers and/or vinyl monomers and emulsifiers, and are self combined by heating, easily tacked to metal substrates, brilliant and coated solvent-resistant.

CONSTITUTION: The aqueous synthetic dispersions are prepared, the dispersions consist of the solid polymer of (A) vinyl-benzene and/or tert-buthylacrylate of which nuclei of 20-60 wt.% or vinyl group may be substituted by 1-4C alkyl and each homopolymer of the monomer shows transition temp. of 35°C and less, (B) acrylate containing 22-55 wt.% 1-8C monoalcohol component and/or methacrylate containing 22-55 wt.% 5-10C monoalcohol component and each homopolymer of the monomer shows glass transition temp. of 35°C and less, (C) 2-8C (metha)acrylate monomer containing 8-15 wt.% alkanepolyol components, (D) 8-15 wt.% etherified N-alkylol (metha)acrylamide, (E) 0.5-5 wt.% 3-5C α,β-unsaturated mono- or di-carboxylic acid and (F) 0-4 wt.% acid amide of 3-5C α,β-unsaturated monocarboxylic acid and/or 4-5C α,β-unsaturated dicarboxylic acid and the emulsifier.