Stable gelled water in oil emulsion and its use in the cosmetic,

Details Stable gelled water in oil emulsion and its use in the cosmetic, Stable gelled water in oil emulsion and its use in the cosmetic,

1997-03-06

1999-09-28

Venkat, Jyothsna

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Cosmetic, antiperspirant, dentifrice

424 59, 424 7802, 514845, 514844, 514846, 514937, A61K 748

Patent

active

059584343

ABSTRACT:
The present invention relates to a stable fluid water-in-oil emulsion, in particular a topical emulsion, comprising, as gelling agent, a polysaccharide alkyl ether formed from units containing at least two different monosaccharide rings, each unit containing at least one hydroxyl group substituted by a saturated hydrocarbon alkyl chain. The polysaccharide alkyl ether preferably has a weight average molecular weight greater than 200,000 and preferably is a guar gum alkyl ether having a degree of substitution of approximately 2 to 3. The emulsion obtained is stable, even in the absence of an electrolyte or a fatty substance commonly used to stabilize water-in-oil emulsions. It can in particular contain an active ingredient sensitive to electrolytes. The emulsion according to the invention can be used in particular in the cosmetics and/or dermatological fields.

REFERENCES:
patent: 5186928 (1993-02-01), Birtwistle
patent: 5518647 (1996-05-01), Zocchi
Research disclosure by Hercules Incorporated, Oct. 1995.
Clarke et al,, World Patent Index (abstract), 96-207276, May, 1996.
Srcic et al., Chemical Abstracts, vol. 97, #11692, 1981.
Majewicz et al., "Oil-Based Cosmetic and Therapeutic Compositions Containing Ethylguar", Research Disclosure, No. 37807, Oct. 1995, p. 642 XP002018143.

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