Low residue antiperspirant gel-solid stick compositions

US6171601A · kind A · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• John Michael Gardlik · Cincinnati, US
• Gerald John Guskey · Montgomery, US
• Curtis Bobby Motley · Sharonville, US

Key dates

• Filing date: Dec 20, 1996
• Grant date: Jan 9, 2001
• Expiry date: Dec 20, 2016

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/31
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Disclosed are anhydrous antiperspirant gel-solid stick compositions which comprise a particulate antiperspirant active; a solid non-polymeric gellant that is substantially free of dibenzylidene alditol, n-acyl amino acid derivatives, organic polymeric gellants, and inorganic thickening agents; and an anhydrous liquid carrier having an average solubility parameter of from about 3 to about 13 (cal/cm.sup.3).sup.0.5 wherein the composition has a visible residue index of from about 11 to about 30 L-value, a product hardness of from about 500 gram-force to about 5,000 gram-force, a ratio of an elastic to viscous moduli of from about 0.1 to about 100. The refractive indices of the particulate antiperspirant active, solid non-polymeric gellant, and anhydrous liquid carrier are not matched. The solid non-polymeric gellant is preferably a crystalline material having an average particle size of less than about 1 .mu.m, and/or has an elongated particle morphology having an aspect ratio of greater than about 2. These antiperspirant gel-solid stick compositions provide improved low residue performance, antiperspirant and aesthetics.