Patent ID: 6136305
Filing Date: 2000-10-24
Classification: A61K,A61Q

Abstract:
In a thickener for a composition for topical application, consisting essentially of a water-in-oil reverse emulsion of a copolymer of acrylic acid and acrylamide, wherein the copolymer contains a polyfunctional monomer in an amount between 0.1 and 2 milliequivalents per mol of the other monomers, and wherein the copolymer is in solution in the aqueous phase constituting the said emulsion, the oil phase of this emulsion consists of a mixture of at least one volatile oil and at least one non-volatile oil, the weight ratio between the volatile oil and the non-volatile oil is between 70/30 and 30/70, the oil phase represents from 10 to 60% by weight of the whole, water represents from 30 to 70% by weight of the whole, the copolymer represents from 10 to 30% by weight of the whole and surfactant represents from 5 to 20% by weight of the whole, and wherein the volatile oil is a volatile isoparaffin and the non-volatile oil is a paraffin or isostearyl isostearate.