| 摘要 |
PROBLEM TO BE SOLVED: To provide a polycarbonate resin material having improved high flowability, transparency and durability. SOLUTION: A resin composition comprises 100 pts.wt. of a polycarbonate-based resin (component A) comprising a polycarbonate-polyorganosiloxane copolymer (component A1) containing polyorganosiloxane units having a number-average polymerization degree of 10 to 60 or comprising the component A1 and a polycarbonate except the component A1, wherein the content of the polyorganosiloxane units is 0.1 to 20 wt.% per 100 wt.% of the component A, and 0.1 to 20 pts.wt. of at least one flowability-improving agent (component B) selected from the group consisting of the following components B1 to B3, wherein, the component B1 is a copolymer comprising a carbon ring-containing (meth)acrylate compound represented by phenyl methacrylate with an aromatic alkenyl compound represented by styrene in a specific ratio; the component B2 is a polymer or copolymer of an aromatic alkenyl compound except the component B1, having a weight-average mol.wt. Mw of 1,000 to 15,000 and a mol.wt. distribution Mw/Mn of 1.2 to 3.2; and the component B3 is polycaprolactone having a number-average mol.wt. of 1,000 to 70,000. COPYRIGHT: (C)2009,JPO&INPIT |
