Patent ID: 7772342
Filing Date: 2010-08-10
Classification: A61K,A61Q,C08F

Abstract:
1. A liquid non-aqueous dispersion comprising a silicone oil and a particulate copolymer dispersed therein without the presence of a dispersion stabilizer, wherein a viscosity of the dispersion is 3.6 to 5.3 Ps and a particle size of the particulate copolymer is 0.05 to 2.0 μm, wherein said copolymer is obtained by one-step copolymerizing (A) 1 to 20% by weight of at least one radical polymerizable macromonomer containing dimethyl polysiloxane, the macromonomer (A) being represented by the formula (1): (wherein X represents a radical polymerizable group, n is an integer of 1 to 10, and m is an integer of 3 to 300), and (B) 99 to 80% by weight of at least one radical copolymerizable monomer with said macromonomer (A), the monomer (B) comprising at least one (meth)acrylate monomer and optionally at least one vinyl monomer, in a silicone oil without using any dispersion stabilizer.