| abstract |
PURPOSE: To obtain the title composition of excellent long-term storage stability which can give a coating film excellent in adhesion to substrate, water repellency, lubricity, heat resistance, etc., by using an aqueous dispersion of a salt of a specified polysiloxane graft polymer with a basic compound. n CONSTITUTION: 100 pts.wt. (in terms of nonvolatile matter) aqueous dispersion of a salt of a polysiloxane graft polymer obtained by agitating a liquid product formed by adding a basic compound (e.g. ammonia water) and water to a solution of a polymer obtained by polymerizing 0.05-10wt.% polymerizable silane compound (e.g. γ-methacryloxypropyltrimethoxysilane), 1-30wt.% unsaturated organic acid (e.g. acrylic acid) and 40-97.5wt.% (the total being 100%) other polymerizable monomers copolymerizable therewith (e.g. butyl acrylate) in an organic solvent (e.g. toluene) in the presence of 1-20wt.% hydroxy-terminated polysiloxane (e.g. linear dihydroxy-dimethylpolysiloxane) is optionally mixed with at most 50 pts.wt. water-soluble resin (e.g. PVA). n COPYRIGHT: (C)1990,JPO&Japio |