Stable monoazo dyestuff

US4074965A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Hubert Kruse · Kelkheim, DE
• Karl Sommer · Palzing, DE

Key dates

• Filing date: May 7, 1976
• Grant date: Feb 21, 1978
• Expiry date: May 7, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B29/0847
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The modification being stable under dyeing conditions of the dyestuff of the formula ##STR1## characterized by an X-ray diffraction diagram with characteristic reflexes at the following glance angles .theta.with the relative intensities as given below: ______________________________________ [o] 2.45 6.30 10.07 11.00 11.35 11.70 12.36 13.55 14.80 15.85 63 100 30 48 83 88 86 59 52 34 ______________________________________ Said modification in the form of a liquid or solid dyeing preparation being suitable for the dyeing of fibrous materials consisting of cellulose esters or synthetic linear polyesters.