| abstract |
The present invention relates to polymer particles made of at least one monomer selected from the group consisting of ethylenically unsaturated monomers and diene monomers, acetoacetoxy groups and mercapto groups. A polyvinyl alcohol resin having at least one functional group selected from the group consisting of a polyvinyl alcohol resin having a black character [?] 0.3 to 0.6, wherein the polyvinyl alcohol resin is adsorbed on the surface of the particles. Regarding synthetic resin powder,n n n It has excellent redispersibility, blocking resistance, film formation and water resistance, can be easily dispersed in water to form an emulsion and is also useful as a admixture for cement and mortar. |