Method of making clear antiperspirant gels
AssigneeDow Corning Corporation
InventorsBradley C. Bahr, Gary E. Legrow, Dimitris E. Katsoulis, Janet M. Smith
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Abstract
A clear antiperspirant gel is made by combining and mixing together (A) an astringent compound having a refractive index of 1.48 to 1.53 which is an antiperspirant salt in the form of (i) a tray dried compound, (ii) an encapsulated salt, or (iii) a solvent solution of a salt compound; and (B) a clear anhydrous organic oil free gel formed with a gelator which is 12-hydroxystearic acid or its metal salts, and an aromatic containing silicone fluid or blend of silicone fluids.
Claims2
A method of making a clear antiperspirant gel having a turbidity less than 400 NTU comprising forming a mixture of (A) 0.1 to 25.0 percent by weight of an astringent compound having a refractive index of 1.48 to 1.53, the astringent compound being an antiperspirant salt in a form selected from the group consisting of (i) a tray dried astringent salt compound, (ii) an encapsulated astringent salt compound, and (iii) a solvent solution of an astringent salt compound;
- and (B) a clear anhydrous organic oil free gel formed from 0.1 to 10.0 percent by weight of a gelator of metal salts of 12-hydroxystearic acid, and 30.0 to 98.0 percent by weight of a blend of an aromatic containing silicone and a volatile silicone, the aromatic containing silicone having a viscosity of less than fifty centistokes, a molecular weight of less than 1,000, a refractive index of 1.48 to 1.53, and at least two aromatic groups as substituents on silicon atoms with remaining substituents on silicon atoms being methyl groups;
- the volatile silicone in the blend being a compound selected from the group consisting of cyclopolysiloxanes of the formula [(CH.sub.3).sub.2 SiO].sub.x, and linear siloxane compounds of the formula (CH.sub.3).sub.3 SiO[(CH.sub.3).sub.2 SiO].sub.y Si(CH.sub.3).sub.3, in which x is an integer having a value of from three to ten, and y is an integer having a value of from zero to ten;
- the aromatic containing silicone and volatile silicone being blended in a ratio of 4:1 to 1:1, respectively;
- heating the mixture to dissolve the gelator;
- and allowing the mixture to cool.
Dependencies are inferred from the claim text.