Cosmetic and pharmaceutical preparations containing photostable UV filters

US6132703A · kind A · utility

Assignee

• BASF SE

Inventors

• Thorsten Habeck · Meckenheim, DE
• Alfred Krause · Speyer, DE

Key dates

• Filing date: Feb 10, 1999
• Grant date: Oct 17, 2000
• Expiry date: Feb 10, 2019

Classification

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

Abstract

Malonic ester derivatives of the formula I ##STR1## where the variables have the meaning explained in the description, as 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 absorbing in the UV region and known for cosmetic and pharmaceutical preparations.