Process for the production of oil-in-water creams

US6086787A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Fred Schambil · Monheim, DE
• Ulrich Zeidler · Goldkronach, DE
• Soraya Shamsai · Cologne, DE
• Thomas Foerster · Goldkronach, DE
• Holger Tesmann · Düsseldorf, DE

Key dates

• Filing date: Jan 19, 1999
• Grant date: Jul 11, 2000
• Expiry date: Jan 19, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K23/018
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Process for the preparation of oil-in-water creams comprising the steps of PA1 I forming a low-viscosity, very fine particle oil-in-water emulsion by heating the following composition to a temperature within or above its phase inversion temperature range: PA2 A) 1 part by weight of liquid oil component, PA2 B) from about 0.1 to about 0.5 parts by weight of at least one nonionic emulsifier having an HLB value of from 11 to 15, PA2 C) from about 0.1 to about 0.2 parts by weight of at least one co-emulsifier selected from saturated fatty alcohols containing 16 to 22 carbon atoms and partial esters of polyols containing 3 to 6 carbon atoms with saturated fatty acids containing 143 to 22 carbon atoms, and PA2 D) from about 1 to about 6 parts by weight of water; and PA1 II thickening the emulsion from step I to the consistency of a cream by adding thereto at least one consistency generator selected from co-emulsifiers defined in step I C) above and water-soluble polymers, wherein the thickened emulsion exhibits plastic behavior at 20.degree. C. with a yield point of at least about 5 Pascal.