Back to results
US 4,775,386 AGranted
Process for photochemical stabilization of undyed and dyed polyamide fibre material and blends thereof with other fibres: copper complex and light stabilizer treatment
AssigneeCiba-Geigy Corporation
InventorsGerhard Reinert, Kurt Burdeska
Life of this patent
Estimating the term…
Abstract
A process for the photochemical stabilization of undyed and dyed polyamide fibre material or blends thereof with other fibre materials, which comprises treating the fibre material with a mixture of (A) an organic copper complex, (B) a light stabilizer and, if desired, (C) an antioxidant, an agent for carrying out the process and the fibre material treated with the agent are described.
Claims17
A process for the photochemical stabilization of undyed and dyed polyamide fiber material or blends thereof with other fiber material, which comprises treating the fiber material with a mixture of
- (A) a non-dyeing copper complex of an alkylene bisazomethine, cycloalkylene bisazomethine, acylhydrazone, semicarbazone or thiosemicarbazone of an aromatic aldehyde or ketone, or an oxime,
- (B) a light stabilizer and, if desired,
- (C) an antioxidant.
Dependencies are inferred from the claim text.