| 摘要 |
An aqueous silicone rubber base emulsion which contains polymer particles comprising 0.1 to 45 wt.% vinyl (co)polymer (A) and 55 to 99.9 wt.% silicone rubber (B) and in which the polymer particles have a number-average particle diameter of 0.008 to 0.1 .mu.m, the coefficient of variation in particle diameter distribution is 65% or lower, and an emulsifier is contained in an amount of up to 10 parts by weight per 100 parts by weight of the silicone rubber (B); and an aqueous emulsion containing silicone rubber base graft copolymer particles which is obtained by graft-polymerizing a vinyl monomer in the presence of the polymer particles. Since these emulsions have a small number-average particle diameter, a narrow particle diameter distribution, and a low emulsifier content, they effectively exhibit properties inherent in silicone rubbers without posing problems attributable to emulsifiers, e.g., discoloration. They are useful as an impact modifier, softener, fiber treatment, hair treatment, agent for imparting sliding properties or water repellency, processing aid for molding materials, flame retardant, coating material, etc.
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