Loading patent…
AssigneesCF Technologies, The Gillette Company
InventorsStephane Fabrice Rouanet, William Edward McGovern, Wanging Cao, John M. Moses, Angel L. Carrillo, Irving M. Klotz
Estimating the term…
A method for providing aerogels, and aerogels produced according to the method, is described. As one aspect, antiperspirant compounds that are in aerogel form, and antiperspirant and deodorant compositions including such salts, are described. The method involves contacting a solution containing material to be processed with a species selected to precipitate the material and selected so as to be miscible with the solvent system of the solution. After the material is precipitated, the material may be washed with the precipitating species until it is substantially free of solvent system. Then, the precipitating species containing the material precipitate is taken above its critical point, and the supercritical fluid is exhausted above its critical temperature. Alternately, a separate isolating species is introduced to displace the precipitating species, or the precipitating species/solvent system mixture. The isolating species then is taken above its critical point, and exhausted above its critical temperature. The invention provides for batch or continuous processes.
An aerogel antiperspirant compound selected from the group consisting of Al.sub.2 (OH).sub.6-a X.sub.a nH.sub.2 O and ZrO(OH).sub.2 pb Y.sub.b mH.sub.2 O wherein X is Cl, Br, I, or NO.sub.3, a is about 0.2 to about 4, n is about 1 to 6, Y is Cl, Br, I, NO.sub.3 or SO.sub.4, b is about 0.8 to about 2, p is the valence of Y, and m is about 1 to 7, and mixtures or complexes thereof, said antiperspirant compound having at least two of the following properties:
An antiperspirant compound in uncollapsed aerogel form, wherein said compound is selected from the group consisting of Al.sub.2 (OH).sub.6-a X.sub.a nH.sub.2 O and ZrO(OH).sub.2-pb Y.sub.b mH.sub.2 O wherein X is Cl, Br, I, or NO.sub.3, a is about 0.3 to about 4, n is about 1 to 6, X is Cl, Br, I, NO.sub.3 or SO.sub.4, b is about 0.8 to about 2, p is the valence of Y, and m is about 1 to 7, and mixtures or complexes thereof.
Dependencies are inferred from the claim text.