Mixtures of optical brighteners

US4336155A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Thomas Martini · Bad Soden am Taunus, DE
• Rudiger Erckel · Eppstein, DE
• Horst Fruhbeis · Kelkheim, DE
• Gunter Rosch · Bad Soden am Taunus, DE
• Heinz Probst · Pocking, DE

Key dates

• Filing date: Jul 16, 1980
• Grant date: Jun 22, 1982
• Expiry date: Jul 16, 2000

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06L4/65
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Mixtures of optical brighteners consisting of 5 to 95% by weight of a compound of the formula ##STR1## in which A denotes a o- or p-cyanophenyl group, and 95 to 5% by weight of one or more further optical brighteners.