Stable cosmetic and dermatological light-protecting preparations in the form of water/oil emulsions containing inorganic micro-pigments, derivatives of triazine and/or other components

US6022530A · kind A · utility

Assignee

• BEIERSDORF AG · DE

Inventors

• Heinrich Gers-Barlag · Kummerfeld, DE
• Albrecht Dorschner · Hamburg, DE
• Rainer Kropke · Schenefeld, DE
• Anja Müller · Bad Oldesloe, DE
• Bente Nissen · Hamburg, DE
• Arianne Schomann · Hamburg, DE

Key dates

• Filing date: Nov 27, 1998
• Grant date: Feb 8, 2000
• Expiry date: Nov 27, 2018

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K8/4966
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Cosmetic or dermatological light protection formulations in the form of W/O emulsions, comprising PA1 (a) one or more light protection filter substances which are solid under normal conditions and PA1 (b) one or more W/O emulsifiers chosen from the group of substances of the general structural formula ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 independently of one another are chosen from the group which consists of: H, branched or unbranched, saturated or unsaturated fatty acid radicals having from 8 to 24 carbon atoms, in which up to 3 aliphatic hydrogen atoms may be substituted by hydroxyl groups, and n is a number from 2 to 8.