THERMOPLASTIC RESIN COMPOSITION FOR LASER MARKING

摘要

PROBLEM TO BE SOLVED: To provide a thermoplastic resin composition for laser marking which is excellent in impact resistance, heat resistance and moldability and can develop clear white or chromatic colors under exposure of laser beam. SOLUTION: This thermoplastic resin composition for laser marking is prepared by compounding (C) 0.01-5 pts.wt. of a black compound with 100 pts.wt. of a total consisting of (A) 80-99 pts.wt. of a rubber-reinforced resin obtained by copolymerizing a (meth)acrylate in an amount of 25-60 wt.% in monomer components and (B) 20-1 pt.wt. of an ethylene-(meth)acrylate-carbon monoxide- based terpolymer.