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US 11,142,642 B2Granted
Polyamide composition which is dyed in black, production and use thereof
AssigneeBASF SE
InventorsJens Cremer, Sebastian Wagner
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Abstract
A black-colored polyamide composition is provided which comprises a chromium-containing azo dye in the form of a chromium complex and carbon black, and also glass fibers. Production of this polyamide composition and use thereof for the production of black-colored laser-inscribable polyamide moldings are also provided.
Claims16
A polyamide composition comprising
- a) from 34.98 to 89.98% by weight of at least one synthetic polyamide as component A and
- b) from 0.01 to 1.0% by weight of a chromium complex dye selected from the compounds of the formulae A1), A2) and A3) and mixtures of two or three of these compounds
- as component B,
- c) from 0.01 to 1% by weight of carbon black as component C,
- d) from 10 to 65% by weight of glass fibers as component D,
- e) from 0 to 50% by weight of other additional substances as component E,
- where the quantities stated, which give a total of 100% by weight, are based on the entire composition and the composition comprises at most 0.05% by weight of nigrosin.
4 more elements
Dependencies are inferred from the claim text.