Inverse emulsions as thickeners for cosmetics

Details Inverse emulsions as thickeners for cosmetics Inverse emulsions as thickeners for cosmetics

2011-04-26

2011-04-26

Lipman, Bernard (Department: 1762)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S292950, C526S306000, C526S310000, C526S312000

Reexamination Certificate

active

07932337

ABSTRACT:
Inverse emulsions useful for the preparation of cosmetic formulations can be prepared wherein the weight ratio between the aqueous phase and the organic phase is from 4:1 and 2:1 and containing from 20 to 70% by weight of an acrylic polymer obtained by inverse emulsion polymerisation ofi. from 55 to 75% by weight of an anionic acrylic monomer containing a strongly acidic functional group;ii. from 0.1 to 5% by weight of a cationic acrylic monomer of the formula (I)whereinR1is 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;iii. from 25 to 45% by weight of a C3-C5anionic acrylic monomer containing a carboxylic group.

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