Preparations of the w/o emulsion type with an increased water content, comprising moderately polar lipids and silicone emulsifiers and, if desired, cationic polymers

US6793929B2 · kind B2 · utility

Assignee

• BEIERSDORF AG · DE

Inventors

• Andreas Bleckmann · Ahrensburg, DE
• Rainer Kropke · Schenefeld, DE
• Jens Nielsen · Galten, DK
• Gunther Schneider · Hamburg, DE
• Stephanie Von Der Fecht · Wedel, DE

Key dates

• Filing date: May 23, 2000
• Grant date: Sep 21, 2004
• Expiry date: May 23, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/5426
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Water-in-oil emulsions(a) with a content of water and optionally water-soluble substances totalling at least 75% by weight, and with a content of lipids, emulsifiers and lipophilic constituents totalling at most 25%, preferably at most 20%, based in each case on the total weight of the preparations,(b) whose oil phase is chosen from the group of lipids or lipid mixtures, where the total polarity of the lipid phase is between 20 and 30 mN/m,(c) comprising at least one interface-active substance, chosen from the group of alkylmethicone copolyols and/or alkyldimethicone copolyols,(d) optionally, but particularly when the content of water and water-soluble (hydrophilic) constituents is between 75 and 80% by weight, comprising one or more cationic polymers.