FIELD: chemistry.
SUBSTANCE: invention relates to a plastic composition marked with laser that does not contain antimony. Laser-marked plastic contains thermoplastic polymer, bismuth oxide and co-absorbent additive selected from plate silicates. The amount of bismuth oxide is 0.5-5 wt.% relatively to the total weight of plastic. The amount of co-absorbent additive relatively to bismuth oxide is 5-40 wt.%. Thermoplastic polymer is thermoplastic polyurethane.
EFFECT: improvement of contrast and sharpness along the edge of laser marking is provided.
8 cl, 1 dwg, 3 tbl, 2 ex
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