Compositions – Preservative agents – Anti-corrosion
Patent
1992-04-28
1994-04-19
Lovering, Richard D.
Compositions
Preservative agents
Anti-corrosion
2522997, 252308, 252309, 2523151, 2523153, 2523154, 424 7803, 514847, 514937, 514944, A61K 3178, A61K 31785, B01J 1300, C09K 1936
Patent
active
053043340
ABSTRACT:
The instant invention relates to methods of preparing and stabilizing complex multiphase compositions that include distinct phases of water, gel, liquid crystal or oil and perfluoropolyether dispersed in a continuous phase of a silicone fluid. In particular, the present invention relates to a method of preparing a stable multiphase composition comprising the steps of mixing an aqueous solution of a water-soluble polymeric emulsifier, a silicone-based emulsifier and an oleophobic, hydrophobic silicone fluid in amounts effective to form a stable water-in-silicone emulsion; mixing the water-in-silicone emulsion with a hydrophilic gel comprising a homogeneous mixture of water and a sufficient amount of at least one viscosity-enhancing, water-soluble polymer, the emulsion and gel being combined in amounts effective to form a dispersion in which the gel is dispersed in the emulsion; and adding to the dispersion an oil or a thermotropic liquid crystal and a perfluoropolyether in amounts effective to form a stable, multiphase composition comprising a continuous phase of silicone fluid and independent, polydisperse phases of water, gel, oil or liquid crystal and perfluoropolyether.
REFERENCES:
patent: 4592934 (1986-06-01), Wolstoncroft
patent: 4604281 (1986-08-01), Deckner et al.
patent: 4720353 (1988-01-01), Bell
patent: 4803067 (1989-02-01), Brunetta et al.
patent: 4859753 (1989-08-01), Gallot et al.
patent: 4883659 (1989-11-01), Goodman et al.
patent: 4954332 (1990-09-01), Bissett et al.
patent: 4966205 (1990-10-01), Tanaka
patent: 5015469 (1991-05-01), Yoneyama et al.
patent: 5061481 (1991-10-01), Suzuki et al.
A. Bevacqua, K. Lahanas; I. Cohen; G. Cioca; Liquid Crystals in Multiple Emulsions; Cosmetics & Toiletries; vol. 106, May 1991; pp. 53-56.
Bevacqua Andrew J.
Cioca George
Keeler Tracy N.
Lahanas Konstantinos M.
Estee Lauder Inc.
Lovering Richard D.
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