Preparation of a self supporting cosmetic from a pigmented powder

Patent 4724138 Issued on February 9, 1988. Estimated Expiration Date:

November 20, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

2322930

3800034

3912528

Dental investment material
Patent #: 3966479
Issued on: 06/29/1976
Inventor: Koblitz

Cosmetics and process for preparation thereof
Patent #: 4128630
Issued on: 12/05/1978
Inventor: Hayashi , et al.

Joint composition including starch
Patent #: 4287103
Issued on: 09/01/1981
Inventor: Green , et al.

Organic gypsum set accelerators
Patent #: 4298394
Issued on: 11/03/1981
Inventor: Leeming , et al.

Method and composition for forming a plaster object
Patent #: 4299790
Issued on: 11/10/1981
Inventor: Greenberg

Method of making a cosmetic substance Patent #: 4332763
Issued on: 06/01/1982
Inventor: Hempel , et al.

Inventors

Application

No. 06/935058 filed on 11/20/1986

US Classes:

424/63, LIVE SKIN COLORANT CONTAINING424/59, TOPICAL SUN OR RADIATION SCREENING, OR TANNING PREPARATIONS424/60, Aromatic acid or derivative containing (e.g., aminobenzoic acid or methyl salicylate, etc.)424/65, ANTI-PERSPIRANTS OR PERSPIRATION DEODORANTS424/69, FACE OR BODY POWDERS FOR GROOMING, ADORNING, OR ABSORBING514/844COSMETIC, FACIAL

Examiners

Primary: Naff, David M.
Assistant: Foley, Shawn P.

Attorney, Agent or Firm

Bender; S. Michael

International Classes

A61K 8/23 (20060101)
A61K 8/19 (20060101)
A61Q 1/12 (20060101)
A61Q 13/00 (20060101)
A61Q 1/02 (20060101)
A61Q 1/08 (20060101)

Abstract

Coherent powder compositions are formed by blending a powder phase containing at least 5 weight percent calcium sulfate hemihydrate with a liquid phase containing sufficient water to fully convert the hemihydrate to calcium sulfate dihydrate and drying the resultant blend. Uniformly pigmented products are formed by including a powdered pigment in the powder phase and 0.1 to 4.0 weight percent surfactant in the aqueous phase. Compositions suitable for use as cosmetic sticks are formed by employing at least 40 weight percent calcium sulfate hemihydrate. Preferably the products are formed by combining 40 to 60 parts by weight of aqueous phase with 50 parts by weight of powder phase. To improve pay-off characteristics the products are subjected to a temperature above 128° C., the outer surface is abraded or up to 20 weight percent of the aqueous phase is glycerin or propylene glycol.