| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an aromatic polycarbonate resin composition which includes a resin, as base components, comprising an aromatic polycarbonate resin, a hard graft copolymer and a rubber-modified polymer, holds original moldability and mechanical properties such as surface impact strength, and has an improved surface hardness and weld appearance. <P>SOLUTION: This polycarbonate resin composition includes (A) 10-95 wt.% of the aromatic polycarbonate, (B) 5-90 wt.% of the hard graft polymer with a weight average molecular weight of 70,000-120,000 obtained by graft polymerizing at least one selected from an aromatic vinyl monomer, a vinyl cyanide monomer and an alkyl (meth)acrylate monomer, (C) 0-20 wt.% of the rubber-modified polymer obtained by polymerizing a rubber component with at least one selected from the aromatic vinyl monomer, the vinyl cyanide monomer and the alkyl (meth)acrylate monomer, and also (D) 1-30 pts.wt., based on the total 100 pts.wt. of the above (A) to (C), of a surface hardness improver with a weight average molecular weight of 5,000-30,000 containing (D-1) 10-59 wt.% of an aromatic (meth)acrylate monomer, (D-2) 40-89 wt.% of the alkyl (meth)acrylate monomer, and (D-3) 1-30 wt.% of a modified aromatic vinyl monomer. <P>COPYRIGHT: (C)2013,JPO&INPIT |
