Thickeners for products for topical application

Details Thickeners for products for topical application Thickeners for products for topical application

1995-10-02

1997-11-18

Levy, Neil S.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Cosmetic, antiperspirant, dentifrice

424 7803, 424 7832, A61K 748

Patent

active

056885148

ABSTRACT:
A thickener for products for topical application such as personal care products for application to the skin or hair, or topically administrable pharmaceutical preparations, comprises a water-in-oil emulsion containing polymeric material, at least 98% of which polymeric material is soluble in the aqueous phase. The polymeric material comprises units derived from (a) acrylamide, (b) 2-acrylamido-2-methylpropane-sulphonic acid (AMPS) and (c) a polyfunctional monomer, present in an amount of from 0.12 to 2 milliequivalents per mol of total monomer units. At least some of the AMPS units are in the form of a neutral salt such that the aqueous phase of the water in oil emulsion has a pH of at least 5.5.

REFERENCES:
patent: 4443576 (1984-04-01), Bhattacharyya
patent: 4690996 (1987-09-01), Shih et al.
patent: 4722958 (1988-02-01), Sauer et al.
patent: 4748220 (1988-05-01), Hartmann et al.
patent: 4806345 (1989-02-01), Bhattacharyya
patent: 4994088 (1991-02-01), Ando et al.

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