| 摘要 |
The invention relates to a polymer composition comprising a thermoplastic polymer and at least one colorant, wherein the composition further comprises from 0.1 to 15 wt.%, relative to the total weight of the composition, of a laser marking additive being or comprising a polymer of an acrylate monomer or a metal sulfate whereby the metal is Na, K, Mg, Ca, Ba, Zr, Zn, Al or Si, or wherein the composition further comprises from 0.1 to 15 wt.% , relative to the total weight of the composition, of a mixture comprising at least two of said laser marking additives. |
