Redispersible synthetic resin powder and use thereof
AssigneeNippon Synthetic Industry Co., Ltd.
InventorsKouji Hara, Mitsuo Shibutani, Kiyoharu Kitamura
Life of this patent
Estimating the term…
Abstract
A redispersible synthetic resin powder comprising particles of a polymer made from at least one monomer selected from the group consisting of ethylenically unsaturated monomers and diene monomers, and a polyvinyl alcohol resin having at least one functional group selected from the group consisting of acetoacetoxy group and mercapto group and having a block character [η] of 0.3 to 0.6, wherein said polyvinyl alcohol resin is adsorbed onto the surface of said particles. The powder has excellent redispersibility, blocking resistance, film forming property and water resistance, can be easily dispersed into water to form emulsions and is also useful as an admixture for cement and mortar.
Claims20
A redispersible synthetic resin powder comprising particles of a polymer made from at least one monomer selected from the group consisting of ethylenically unsaturated monomers and diene monomers, and a polyvinyl alcohol resin having an acetoacetoxy group, and a block character (η) of 0.3 to 0.6, wherein said polyvinyl alcohol resin is adsorbed onto the surface of said particles.
A redispersible synthetic resin powder comprising particles of a polymer made from at least one monomer selected from the group consisting of ethylenically unsaturated monomers and diene monomers and a polyvinyl alcohol resin having at least one functional group selected from the group consisting of acetoacetoxy group and mercapto group and having a block character (η) of 0.3 to 0.6, wherein said polymer particles are prepared by conducting an emulsion polymerization of said at least one monomer and said polyvinyl alcohol resin is adsorbed onto the surface of said particles.
A composition comprising a cement and a redispersible synthetic resin powder, said redispersible powder comprising particles of a polymer made from at least one monomer selected from the group consisting of ethylenically unsaturated monomers and diene monomers and a polyvinyl alcohol resin having at least one functional group selected from the group consisting of acetoacetoxy group and mercapto group and having a block character (η) of 0.3 to 0.6, wherein said polyvinyl alcohol resin is adsorbed onto the surface of said particles.
Dependencies are inferred from the claim text.