PARTICULATE SILICONE-MODIFIED ACRYLIC RUBBER, PARTICULATE GRAFT COPOLYMER BASED ON SILICONE-MODIFIED ACRYLIC RUBBER, AND THERMOPLASTIC RESIN COMPOSITION

摘要

A novel particulate silicone-modified acrylic rubber prepared by grafting (B) 45 to 5000 parts by weight of a silicone rubber forming component comprising 99.9 to 80 wt.% of a low-molecular organosiloxane, 0.1 to 10 wt.% of a multifunctional silane compound and 0 to 10 wt.% of a reactive silane compound having a polymerizable unsaturated bond or a mercapto group in the molecule onto (A) 100 parts by weight of a particulate acrylic rubber and, if necessary, grafting (C) 0.1 to 5000 parts by weight of an acrylic rubber forming component onto the obtained graft polymer without specific equipment at a high conversion; a particulate graft copolymer graft based on a silicone-modified acrylic rubber that is prepared from the above novel rubber and that can improve the weathering and impact resistances of various thermoplastic resins; and a thermoplastic resin composition comprising a thermoplastic resin and the above particulate graft copolymer.