Photo-stable cosmetic and pharmaceutical formulations containing UV-filters

US6037487A · kind A · utility

Assignee

• BASF SE

Inventors

• Thorsten Habeck · Meckenheim, DE
• Alexander Aumuller · Neustadt, DE
• Volker Schehlmann · Schifferstadt, DE
• Horst Westenfelder · Neustadt, DE
• Thomas Wunsch · Speyer, DE

Key dates

• Filing date: Mar 12, 1999
• Grant date: Mar 14, 2000
• Expiry date: Mar 12, 2019

Classification

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

Abstract

A method of using compounds of formula I ##STR1## in which the C.dbd.C double bond is present in E and/or Z configuration and the variables R.sup.1, R.sup.2, R.sup.3 and R.sup.4 have the meanings defined in the specification disclosure, as UV filters, particularly UV-A filters, in cosmetic and pharmaceutical formulations for the protection of the human skin or human hair from solar radiation, alone or together with compounds known per se in cosmetic and pharmaceutical formulations and capable of absorbing radiation in the UV range.