Use of polymer molding compositions for the partial color change by means of laser energy for the production of optical information with a very good contrast

摘要

The invention pertains to the use of polymer molding compounds composed of polymers selected from the group of polyamides, polyolefins, ABS-type graft polymer, polyacrylates, polymethacrylates or a mixture of polycarbonate, ABS-type graft polymer and optionally copolymer, carbon black, reinforcing materials, elastomer modifier, flame-protection additives and processing additives, to produce light or gray markings on a dark background using laser inscription, in particular to generate high-contrast optical information, for example letters, numbers, patterns and/or pictures, etc.