Mixtures of optical brighteners and their use

US4447350A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Thomas Martini · Bad Soden am Taunus, DE
• Erich Schinzel
• Hans Frischkorn · Hofheim, DE
• Herbert Friedrich · Heusenstamm, DE
• Heinz Probst · Pocking, DE

Key dates

• Filing date: Sep 15, 1983
• Grant date: May 8, 1984
• Expiry date: Sep 15, 2003

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 1 to 60% by weight of a brightener from the bisbenzoxazolylnaphthalene series and 99 to 40% by weight of one or more brighteners of the formulae 2 to 10 listed in the description.