Synthetic thickeners for cosmetics

Details Synthetic thickeners for cosmetics Synthetic thickeners for cosmetics

2011-03-08

2011-03-08

Wax, Robert A (Department: 1615)

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Cosmetic, antiperspirant, dentifrice

C424S400000

Reexamination Certificate

active

07901697

ABSTRACT:
Disclosed are inverse emulsions for the preparation of cosmetic formulations wherein the weight ratio between the aqueous phase and the organic phase is from 4:1 and 2:1 and containing Ron 20 to 70% buy weight of an acrylic polymer obtained by inverse emulsion polymerisation of from 55 to 75% by weight of an anionic acrylic monomer containing a strongly acidic functional group; Ron 0.1 to 5% by weight of a cationic acrylic monomer if the formula (I). Wherein R1is hydrogen or methyl; R2, R3, R4are, one independently of the others, hydrogen or C1-C4alkyl; Y is NH or O; A is a C1-C6alkylene; from 25 to 45% by weight of a C3-C5anionic acrylic monomer containing a carboxylic group. Also disclosed is the procedure for their preparation.

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patent: 0 503 853 (1992-09-01), None
patent: 1 059 305 (2000-12-01), None

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