Process for the preparation of foams which can be used in the co

Details Process for the preparation of foams which can be used in the co Process for the preparation of foams which can be used in the co

1990-02-06

1992-12-15

Page, Thurman K.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Liposomes

424 47, 424 65, 424 73, 424 763, 424 858, 424 943, 424 92, 4241951, 424401, 424405, 424420, 514945, 264 46, A61K 09122, A61K 0912, A01N 2528

Patent

active

051715775

ABSTRACT:
The invention relates to a process for the preparation of cosmetics or pharmaceutical foam by foaming with the aid of a propellant. According to the invention, a charge consisting of a cosmetics or pharmaceutical product comprising a dispersion of a water-immiscible product in an aqueous solution, the said dispersion being stabilized by niosomes consisting of one or more nonionic lipid layers encapsulating an aqueous phase, the charge comprising 40 to 95% by weight of dispersion and 5 to 60% by weight of propellant, the proportions being stated with respect to the weight of the total charge of the chamber, are introduced into a chamber which is under pressure and fitted with a valve.

REFERENCES:
patent: 3811830 (1974-05-01), DeMarlo
patent: 4439342 (1984-05-01), Albanese
patent: 4608211 (1986-08-01), Handjani et al.
patent: 4772471 (1988-09-01), Vanlerberghe et al.
patent: 4830857 (1989-05-01), Handjani et al.
patent: 4839175 (1989-06-01), Guo et al.
patent: 4897308 (1990-01-01), Vanlerberghe et al.
patent: 5021200 (1991-06-01), Vanlerberghe et al.

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