| abstract |
(57) [Summary] [PROBLEMS] To obtain a composite emulsion excellent in adhesive strength, adhesive strength and cohesive strength. SOLUTION: (A) Methacrylic acid ester monomer, (B) a polymer mainly composed of at least one monomer selected from an acrylate monomer and a styrene monomer; In a composite polymer dispersoid particle composed of a polymer mainly composed of at least one monomer among vinyl ester monomers and olefin monomers, the weight ratio of the polymer in the dispersoid particles is ( A) / (B) = 10 / 90-90 / 10, the average particle diameter of the dispersoid is 0.2 to 1.5 μm And a dispersant containing at least one of (C) an anionic surfactant, a polyoxyethylene-based nonionic surfactant, and a polyvinyl alcohol-based polymer having a mercapto group at a terminal. Weight ratio of dispersant to porous particles [(A) + (B)] / (C) = 10 A composite emulsion which is 0/1 to 100/10. |