Dyeing of polyamide substrates with an organic N-nitroso-hydroxylamine as light stabilizer

US5076808A · kind A · utility

Assignee

• BASF SE

Inventors

• Erwin Hahn · Heidelberg, DE
• Alexander Aumueller · Deidesheim, DE
• Wolfgang Reuther · Neckargemünd, DE
• Reinhold Krallmann · Bad Dürkheim, DE
• Dieter Wegerle · Mannheim, DE

Key dates

• Filing date: Dec 7, 1990
• Grant date: Dec 31, 1991
• Expiry date: Dec 7, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/924
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

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.