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US 6,306,493 B1Granted
Laser-markable paper and board products
AssigneeMerck Patent Gesellschaft
InventorAlexandra Brownfield
Life of this patent
Estimating the term…
Abstract
There is provided laser-markable paper and board products which include micronized polymers comprising of linear aromatic polyesters and/or of linear polyarylenes having a particle size of from 0.1 to 100 μm as absorber material and material for carbonization.
Claims12
A laser-markable paper or board product, comprising a linear polyarylene micronized polymer selected from polyphenylene ether, polyaryl ether ketone, polyaniline, polyphenylene sulfide or polysulfone, having a particle size of from 0.1 to 100 μm as absorber material and material for carbonization.
Dependencies are inferred from the claim text.