Process for the preparation of foams which can be used in the cosmetics and pharmaceutical field and foams obtained by this process
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United States of America Patent
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Dec 15, 1992
Grant Date -
N/A
app pub date -
Feb 6, 1990
filing date -
Feb 9, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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