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US 7,939,164 B2Granted
Pigment layer and method of permanently scribing a substrate by means of high-energy radiation
AssigneeTesa SE
InventorsArne Koops, Sven Reiter, Jochen Stähr
Life of this patent
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Abstract
Pigment layer intended particularly for the permanent marking of glass, based on a polymer matrix which reacts predominantly with pulverization to a high-energy beam, more particularly to laser irradiation, comprising at least one titanium donor and a carbon donor which provides free carbon under energy irradiation.
Claims19
Pigment layer intended for the permanent marking of a substrate, based on a polymer matrix which reacts predominantly with pulverization to high-energy radiation, wherein the pigment layer has the following composition:
- 100 phr
- polymer matrix,
- 0.2 phr to 2.5 phr
- carbon black and
- 45 phr to 65 phr
- titanium dioxide.
3 more elements
Dependencies are inferred from the claim text.