Process for trichromatic dyeing polyamide fibres

US4773914A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Wolfgang Harms · Leverkusen, DE
• Hans Otten · London, CA

Key dates

• Filing date: Dec 30, 1986
• Grant date: Sep 27, 1988
• Expiry date: Dec 30, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/929
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Dyestuffs which are highly suitable for use as the blue component in the trichromatic dyeing of polyamide fibre materials have the formula ##STR1## in which R.sub.1 and R.sub.2 denote alkyl, the total number of the C atoms in the radicals R.sub.1 and R.sub.2 being at least three. PA1 The dyeings obtained are distinguished, inter alia, by good ozone fastness and the absence of the catalytic fading effect.