Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Patent
1996-02-06
1998-03-03
Page, Thurman K.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
424 65, 424 66, 424 68, 424 47, A61K 700
Patent
active
057231354
ABSTRACT:
The present invention features a method of making a gel cosmetic stick. The method comprises first mixing a particulate dibenzylidene alditol with a liquid vehicle which contains an antiperspirant salt dissolved therein to form a uniform dispersion. The dibenzylidene alditol is mixed with the liquid vehicle at a temperature sufficiently low, preferably below 50.degree. C., so that substantially none of the dibenzylidene alditol dissolves in the liquid vehicle. This dispersion may comprise a commercial size quantity, typically greater than 200 kg. A portion of this dispersion, typically a relatively small portion, is then heated to a temperature sufficient to dissolve the dibenzylidene alditol therein, then cooled to form a gel. This heating and cooling is conducted sufficiently rapidly so as to minimize degradation of the dibenzylidene alditol. Preferably the heating and cooling is conducted such that said portion is subjected to a temperature greater than 90.degree. C. for not more than two hours, most preferably not more than thirty minutes.
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Ford Andrew
Wells David S.
Faulkner D.
Page Thurman K.
The Gillette Company
Williams Stephan P.
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