Anthraquinone dyes

US4181668A · kind A · utility

Assignee

• BASF SE

Inventors

• Wolfgang Elser · Fairfax, US
• Ernst Hartwig
• Manfred Ruske · Ludwigshafen, DE

Key dates

• Filing date: Nov 16, 1978
• Grant date: Jan 1, 1980
• Expiry date: Nov 16, 1998

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31786
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Anthraquinone dyes of the formula ##STR1## where R is C.sub.1 -C.sub.10 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, alkoxyalkyl of a total of 3 to 11 carbon atoms, phenoxyalkyl, where alkyl is of 2 to 4 carbon atoms, or phenyl-C.sub.1 -C.sub.4 -alkyl. On synthetic fibers and blends thereof with cellulosic fibers, the dyes give brilliant clear blues. The dyes are particularly suitable for transfer printing onto synthetic fibers and give high color yields. The transfer prints obtained have excellent fastness characteristics.