Patent ID: 7994255

Claim:
A graft copolymer containing polyorganosiloxane obtained by polymerizing, 1 to 8 parts by weight of a vinyl monomer (B) comprising 100 to 20% by weight of a multi-functional monomer containing at least two polymerizable unsaturated bonds in a molecule (b-1) and 0 to 80% by weight of another copolymerizable monomer (b-2) and 5 to 70 parts by weight of a vinyl monomer (C), in the presence of 30 to 95 parts by weight of polyorganosiloxane particles in a latex state (A), so that the total amount of polyorganosiloxane (A), vinyl monomer (B) and vinyl monomer (C) becomes 100 parts by weight, wherein the polyorganosiloxane particles in a latex state (A) are prepared by polymerizing siloxane monomers in the presence of a silane grafting agent (E), thereby producing a modified polyorgansiloxane, and said modified polyorganosiloxane is subsequently reacted with a silane grafting agent (F) such that grafting agent (F) is unevenly distributed on the surface of the polyorgansiloxane particles.