Thickeners for products for topical application

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

1993-07-22

1998-09-08

Levy, Neil S.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Cosmetic, antiperspirant, dentifrice

424 59, 424 701, 424 7016, 424 73, 424 7803, 424 7807, 424401, 424405, 424487, 424488, 514938, 524555, A61K 748, A61K 910

Patent

active

058042024

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 et al.
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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