| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a resin composition for laser marking which can give a molding capable of producing a clear marking on its surface when irradiated with laser beams and excellent in appearance, impact resistance, and laser marking recognizability. <P>SOLUTION: The thermoplastic resin composition for laser marking comprises a rubber-reinforced copolymer resin (A1) obtained by polymerizing a vinyl monomer (b) containing an aromatic vinyl compound and a vinyl cyanide compound in the presence of a rubbery polymer (a) or a mixture of the rubber-reinforced copolymer resin (A1) with a (co)polymer (A2) of a vinyl monomer. More particularly, this composition comprises 1 to 98 mass% rubber-reinforced thermoplastic resin [A] having a content of the rubbery polymer (a) of 0.5 to 70 mass% and a content of a combined vinyl cyanide compound of 15 to 50 mass%, 1 to 98 mass% aromatic polycarbonate resin [B] and 1 to 98 mass% thermoplastic polyester resin [C]. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
