Antiperspirant gel-solid stick composition

A composition and solid technology, applied in the field of anhydrous antiperspirant gel-solid stick composition and antiperspirant composition

Inactive Publication Date: 2000-02-23
THE PROCTER & GAMBLE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the gel-solids described by Hofrichter et al. are limited to selected dual gellant systems and do not include or otherwise desc

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0152] The following non-limiting examples are used to illustrate specific embodiments of the antiperspirant gel-solid stick compositions of the present invention, including methods for their preparation and use.

[0153] The exemplified compositions are prepared by mixing the listed ingredients except the antiperspirant active and other materials such as perfume. The mixed components were heated to 100°C with stirring to form a hot liquid, and then all other substances were added to the hot liquid. The heated liquid is stirred and cooled until the solidification point is about to be reached, at which point the cooled liquid composition is filled into the applicator pack, allowed to cool and solidify to the requisite product hardness.

[0154]Each of the exemplified compositions includes a crystalline gel matrix comprising crystalline particles having an aspect ratio greater than about 6 and an average crystalline gelling agent particle size of less than about 1 micron. The v...

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PUM

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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<3>)<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 rheology profile defined by a ratio of an elastic modulus (G') to a viscous modulus (G'') 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.

Description

[0001] Field [0002] The present invention relates to antiperspirant compositions in the form of gel-solid sticks. In particular, the present invention relates to compositions offering improved low residue performance, efficacy and aesthetics in the form of gel-solid sticks of choice. Background technique [0003] A variety of topical antiperspirant products are commercially available or known in the antiperspirant art. Most products are formulated as aerosols or sprays, roll-on liquids, creams, lotions, gels, gel-solids or other solid stick formulations and include astringent substances such as zirconium salt or aluminum salt or a combination thereof) into a suitable carrier. These products should provide effective perspiration and odor control and be aesthetically acceptable when or after application to the armpits or other areas of the skin. [0004] Among these products, solid antiperspirant sticks are especially popular ...

Claims

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Application Information

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IPC IPC(8): A61K8/00A61K8/34A61K8/36A61K8/365A61K8/37A61K8/39A61K8/42A61K8/58A61K8/73A61Q15/00C08L83/04
CPCA61K8/39A61K2800/31A61Q15/00A61K8/042A61K8/365A61K8/342A61K8/585A61K8/42A61K8/0229
Inventor 约翰·M·加德里克杰拉尔德·J·古斯基柯蒂斯·B·莫特利
Owner THE PROCTER & GAMBLE COMPANY
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