Patent · US Expired

Using W/O emulsions as thickeners in cosmetic and pharmaceutical formulations

US6099829A · kind A · utility

4Cited by

2References

23Claims

0Family size

Assignee

BASF SE

Inventors

Kristin Tiefensee · Bad Dürkheim, DE
Volker Schehlmann · Schifferstadt, DE
Martin Rubenacker · Altrip, DE

Key dates

Filing date	Nov 5, 1998
Grant date	Aug 8, 2000
Priority date	—
Expiry date	Nov 5, 2018

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2300/14
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The present invention relates to a W/O emulsion comprising cross-linked, water-swellable polymers consisting of PA1 a) 35-100% by weight of ionic monomers, PA1 b) 0-65% by weight of non-ionic monomers, PA1 c) 0.3-1 mol-%, based on a) and b), of one or more at least bifunctional monomer. The oil phase of the W/O emulsion consists of polyglycerol fatty acid esters and comprises at least one fatty acid ester of diglycerol or triglycerol with caprylic or capric acid. The W/O emulsions are usefull as thickeners for cosmetic or pharmaceutical compositions.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.