4,4-diarylbutadienes as water-soluble photostable UV filters for cosmetic and pharmaceutical preparations

US6093385A · kind A · utility

Assignee

• BASF SE

Inventors

• Thorsten Habeck · Meckenheim, DE
• Horst Westenfelder · Neustadt, DE
• Thomas Wunsch · Speyer, DE

Key dates

• Filing date: Jun 21, 1999
• Grant date: Jul 25, 2000
• Expiry date: Jun 21, 2019

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/52
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Use of 4,4-diarylbutadienes of the formula I, ##STR1## where the variables have the meanings explained in the description, as water-soluble photostable UV filters in cosmetic and pharmaceutical preparations for protecting the human skin or human hair from the sun's rays, alone or together with compounds which absorb in the UV region and are known per se for cosmetic and pharmaceutical preparations.