Liquid skin cleanser composition with reduced skin irritation and improved after-feel

Patent 5562912 Issued on October 8, 1996. Estimated Expiration Date:

December 6, 2015. 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

3829563

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Inventors

Application

No. 537335 filed on 12/06/1995

US Classes:

424/401, Cosmetic, antiperspirant, dentifrice424/70.15, Polyvinylpyrrolidone or copolymer thereof424/70.19, Two or more designated surfactant containing424/70.22, Anionic surfactant containing424/70.31, Nonionic surfactant containing424/78.02, TOPICAL BODY PREPARATION CONTAINING SOLID SYNTHETIC ORGANIC POLYMER AS DESIGNATED ORGANIC ACTIVE INGREDIENT (DOAI)510/138, For hands510/158, Cream, paste, or gel514/844, COSMETIC, FACIAL514/846Cleansing cream or lotion

Examiners

Primary: Hulina, Amy

Attorney, Agent or Firm

Will; Joanne P.

International Class

A61K 007/50

Abstract

An improved liquid skin cleanser composition will have about 0.1-25% by weight of at least one EO/PO/EO tri-block nonionic surfactant having the formula: ##STR1## wherein neither x or z can be 0; the sum of x and z is within the range of about 62 to 535, the value of y is within the range of about 15 to 65. Also present will be about 0.1-25% by weight polyvinylpyrrolidone having the formula: ##STR2## wherein the value of n ranges from about 100 to 30,000.