Drug – bio-affecting and body treating compositions – Topical sun or radiation screening – or tanning preparations – Aromatic acid or derivative containing
Patent
1977-12-29
1980-08-12
Lovering, Richard D.
Drug, bio-affecting and body treating compositions
Topical sun or radiation screening, or tanning preparations
Aromatic acid or derivative containing
252316, 252522A, 424 19, 424 31, 424 32, 424 36, 424 38, 424 59, 424 62, 424 63, 424280, 426 89, A61K 744, A61K 7021
Patent
active
042173442
ABSTRACT:
The present invention relates to a process for producing a dispersion of spheres comprising arranged molecular layers encapsulating an aqueous phase. The process comprises admixing a water-dispersible lipid component with the aqueous phase to be encapsulated, the liphophile/hydrophile ratio of the lipid component being such that the lipid swells in the said aqueous phase so as to form a lamellar phase. The lamellar phase is agitated and there is added thereto a dispersion liquid in an amount greater than the resulting lamellar phase and the resulting mixture is vigorously agitated for a period of time ranging from 15 minutes to 3-4 hours. The spheres can encapsulate a water-soluble pharmaceutical, a cosmetic or a food and the dispersions containing said encapsulated materials can be used particularly in the pharmaceutical and cosmetic fields.
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Handjani Rose-Marie
Vanlerberghe Guy
"L'Oreal"
Lovering Richard D.
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