Aqueous dispersion of water-insoluble organic UV filter substances

US6531117B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Robert Heger · Heidelberg, DE
• Helmut Auweter · Schifferstadt, DE
• Wilma M. Dausch · Schifferstadt, DE
• Georg Konrad Zwissler · Heidelberg, DE
• Thomas Wunsch · Speyer, DE

Key dates

• Filing date: Jan 30, 2001
• Grant date: Mar 11, 2003
• Expiry date: Jan 30, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31504
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to aqueous dispersions of sparingly water-soluble or water-insoluble organic UV filter substances, which comprise at least one sparingly water-soluble or water-insoluble organic UV filter substance as colloidally disperse phase in amorphous or partially amorphous form.