Use of benzazoles UV absorbers, new benzazoles and a process for their preparation

US5585091A · kind A · utility

Assignee

• Haarmann & Reimer Corporation · DE

Inventors

• Ralf Pelzer · Rastenberg, DE
• Roland Langner · Holzminden, DE
• Horst Surburg · Holzminden, DE
• Horst Sommer · Musberg, DE
• Alfred Krempel · Holzminden, DE
• Rudolf Hopp · Holzminden, DE

Key dates

• Filing date: Feb 22, 1995
• Grant date: Dec 17, 1996
• Expiry date: Feb 22, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D235/20
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Compounds which, per molecule, contain at least 2 benzazolyl groups are outstandingly suitable as UV absorbers for sunscreen compositions.