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US 5,076,808 AGranted
Dyeing of polyamide substrates with an organic N-nitroso-hydroxylamine as light stabilizer
AssigneeBASF SE
InventorsErwin Hahn, Alexander Aumueller, Wolfgang Reuther, Reinhold Krallmann, Dieter Wegerle
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Abstract
Polyamide substrates are dyed from aqueous baths with suitable dyes and with copper complexes of organic N-nitrosohydroxylamines as light stabilizers for the dyed polyamide.
Claims5
A process for dyeing a polyamide substrate from an aqueous bath with a suitable dye and with a copper complex as light stabilizer for the dyed polyamide, which comprises using the copper complex of an organic N-nitrosohydroxylamine.
A dye formulation for dyeing a polyamide substrate, containing a copper complex of an organic N-nitrosohydroxylamine as light stabilizer for the dyed polyamide.
Dependencies are inferred from the claim text.