Thickeners for products for topical application

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

C - Chemistry, Metallurgy

08

L

C08L 33/26 (2006.01) A61K 8/81 (2006.01) A61K 9/107 (2006.01) A61K 9/113 (2006.01) A61K 47/32 (2006.01) A61Q 5/00 (2006.01) A61Q 19/00 (2006.01) C08F 2/32 (2006.01) C08L 41/00 (2006.01)

Patent

CA 2062375

A thickener for products for topical application such as personal care products for application to the skin or hair, or topically administrable pharamaceutical 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 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 units of the 2-acrylamido-2- methylpropane-sulphonic acid 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.

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