| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject resin having excellent resistance to chemicals and also impact resistance by graft copolymerizing a monomer mixture containing an aromatic vinyl monomer in the presence of a specific base rubber polymer. SOLUTION: This rubber reinforced thermoplastic resin is obtained by graft polymerizing (C) a monomer mixture containing an aromatic vinyl monomer in the presence of a base rubber polymer comprising (A) a composite rubber polymer containing a conjugated diene-based rubber polymer and an acrylic rubber polymer and having 0.05-1.5μm average particle diameter and (B) a conjugated diene-based rubber polymer having 0.01-0.3μm average particle diameter. Preferably, the component A is obtained by mixing 15-50 pts.wt. of the component B obtained by emulsion polymerizing 50-100 wt.% of a conjugated diene-based monomer, etc., with 50-85 pts.wt. of an acrylic rubber polymer obtained by emulsion polymerizing 70-100 wt.% of an alkyl acrylate monomer, etc., and having 0.01-0.3μm average particle diameter, and then thickening particle diameter. |
