Laser-markable pigments containing an absorber coated with a...

Details Laser-markable pigments containing an absorber coated with a... Laser-markable pigments containing an absorber coated with a...

2007-04-10

2007-04-10

Jagannathan, Vasu (Department: 1714)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C523S216000, C524S404000, C524S409000, C524S416000, C524S442000, C428S403000, C428S407000

Reexamination Certificate

active

10701176

ABSTRACT:
Laser-markable pigments which are distinguished by the fact that an absorber is coated with a marker and optionally with a diffusion barrier are described. Further, processes for the preparation of the laser-markable pigments and methods for using them are described. The absorber is preferably an inorganic pigment or a filler. The marker is preferably an intrinsically laser-markable polymer, particularly a polyethylene terephthalate, acrylonitrile-butadiene-styrene, polystyrene, polyphenylene ether, liquid-crystal polymer or polyphenylene sulfide.

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