PREPARATIONS OF THE W/O EMULSION TYPE WITH AN INCREASED WATER CONTENT, COMPRISING MODERATELY POLAR AND/OR NONPOLAR LIPIDS AND ONE OR MORE INTERFACE-ACTIVE POLYETHERS OF THE A-O-B-O-A TYPE, AND COMPRISING AT LEAST ONE SUBSTANCE CHOSEN FROM THE GROUP OF CATIONIC POLYMERS

US6653397B2 · kind B2 · utility

Assignee

• BEIERSDORF AG · DE

Inventors

• Andreas Bleckmann · Ahrensburg, DE
• Rainer Kropke · Schenefeld, DE

Key dates

• Filing date: Sep 24, 2001
• Grant date: Nov 25, 2003
• Expiry date: Apr 27, 2022

Classification

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

Abstract

A water-in-oil emulsion(a) with a content of water and optionally water-soluble substances totaling at least 70% by weight, and with a content of lipids, emulsifiers and lipophilic constituents totaling at most 20%, in each case based on the total weight of the preparations,(b) with a lipid phase whose total polarity is between 20 and 45 mN/m,(c) comprising at least one interface-active substance chosen from the group of substances of polyethers ofan oligomeric or polymeric molecular unit B, the monomers of which are branched or unbranched &agr;, &ohgr;-alkylene glycols (&agr;, &ohgr;-dihydroxyalkanes) having 3-25 carbon atoms andtwo units A composed of polyoxyethylene groups,where the molecular units A and B are linked together according to the scheme A-O-B-O-A via ether groups,(d) comprising at least one substance chosen from the group of cationic polymers.