Method of making clear antiperspirant gels

• US 5,455,026 A
• Filed: 01/31/1994
• Issued: 10/03/1995
• Est. Priority Date: 01/31/1994
• Status: Expired due to Fees

• Current Assignee: Dow, Inc.
• Original Assignee: Dow, Inc.
• Inventors: Katsoulis, Dimitris E., Legrow, Gary E., Smith, Janet M., Bahr, Bradley C.
• Primary Examiner(s): Ivy, C. Warren
• Assistant Examiner(s): HUANG, EVELYN MEI
• Application Number:
  US08/189,526
• Time in Patent Office: 610 Days
• Field of Search: 424/65, 424/66, 424/68
• US Class Current: 424/65
• CPC Class Codes: A61K 2800/262 Transparent; Translucent
• CPC Class Codes: A61K 2800/31 Anhydrous
• CPC Class Codes: A61K 2800/412 Microsized, i.e. having sizes between 0.1 and 100 microns
• CPC Class Codes: A61K 8/042 Gels
• CPC Class Codes: A61K 8/11 Encapsulated compositions
• CPC Class Codes: A61K 8/365 Hydroxycarboxylic acids; Ketocarboxylic acids
• CPC Class Codes: A61K 8/891 saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• CPC Class Codes: A61Q 15/00 Anti-perspirants or body deodorants deodorisation of air A61L9/00

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 the gelator 12-hydroxystearic acid and a blend of aromatic containing silicone fluid and volatile silicone fluids.

Claims

1. A method of making a clear antiperspirant gel 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 compound, (ii) an encapsulated salt, and (iii) a solvent solution of a 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 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 the 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 [(CH₃)₂ SiO]_x, and linear siloxane compounds of the formula (CH₃)₃ SiO[(CH₃)₂ SiO]_y Si(CH₃)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.

2. A clear antiperspirant gel formed according to the method of claim 1.