Cross-linked polyglycerol esters

US11807603B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Jan Marian von Hof · Bochum, DE
• Achim Friedrich · Hattingen, DE
• Wolfgang Berkels · Bottrop, DE
• Barbara Hohenberg · Gelsenkirchen, DE
• Oliver Springer · Wesel, DE
• Juergen Meyer · Taunusstein, DE

Key dates

• Filing date: May 15, 2017
• Grant date: Nov 7, 2023
• Expiry date: Apr 4, 2038

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/10
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to a polyglycerol partial ester obtainable by esterification of a polyglycerol with a carboxylic acid mixture comprising at least one polyhydroxycarboxylic acid of a hydroxycarboxylic acid having 8 to 32 carbon atoms, at least one short-chain dicarboxylic acid having 2 to 16, preferably 6 to 14, particularly preferably 8 to 12, carbon atoms, at least one long-chain dicarboxylic acid having 24 to 44, preferably 30 to 40, particularly preferably 34 to 38, carbon atoms, and at least one fatty acid selected from linear, unsaturated and branched, saturated fatty acids having 14 to 24 carbon atoms, to a method for preparing polyglycerol partial esters, and to the use of corresponding polyglycerol partial esters as W/O emulsifier.