| 摘要 |
The present invention relates to a thermoplastic resin composition for laser marking capable of developing chromatic colors containing (A) 100 parts by weight of a thermoplastic resin comprising 1 to 100% by weight of a rubber-reinforced resin (A-1) obtained by polymerizing 95 to 30% by weight of at least one monomer (b) selected from aromatic vinyl compounds, vinyl cyanide compounds, (meth)acrylic esters, acid anhydride-based monomers and maleimide-based compounds in the presence of 5 to 70% by weight of a rubber-like polymer (a) {(a)+(b) =100% by weight}, and 99 to 0% by weight of a polymer (A-2) obtained by polymerizing at least one monomer selected aromatic vinyl compounds, vinyl cyanide compounds, (meth)acrylic esters, acid anhydride-based monomers and maleimide-based compounds. The total of (A-1)+(A-2) is 100% by weight. Polymerized (meth)acrylic ester is present in an amount of 30 to 70% by weight and the rubber-like polymer (a) is a mixture of at least two rubber-like polymers differing in particle size; (B) 0.01 to 5 parts by weight of at least one black system compound selected from black iron oxide and titanium black; and (C) 0.01 to 5 parts by weight of a dye and/or an organic pigment. |
