Cosmetic or pharmaceutical composition in the form of a rigid gel, particularly for containing inclusions therein
AssigneeL'oreal
InventorJean-Francois Nadaud
Life of this patent
Estimating the term…
Abstract
A transparent or translucid gel based on a cross-linked polyacrylic acid type polymer is rigidified by at least one galactomannan (carob, guar or tara gum) in small quantity. The gel then has a sufficiently rigid consistency to ensure good stability therein of inclusions consisting of a water-in-oil or oil-in-water emulsion, a gel or an aqueous dispersion of lipid vesicles. The presence, in the medium, of salts, which are otherwise incompatible with the polymer, does not disrupt the rheological state of the gel.
Claims13
A cosmetic or pharmaceutical composition comprising at least one rigid gelled phase which, when subjected to shear, yields a mild and non-sticky product, said gelled phase comprising at least one carboxyvinyl polymer present in an amount ranging from 0.3 to 0.9 percent by weight based on the weight of said gelled phase, and, said gelled phase further comprising carob gum in an amount of from 0.05 to 0.4 percent by weight based on the weight of said gelled phase, wherein said carboxyvinyl polymer is a cross-linked polyacrylic acid having a molecular mass ranging from 800,000 to 5,000,000.
A process for making a cosmetic or pharmaceutical composition comprising at least one rigid gelled phase which, when subjected to shear, yields a mild and non-sticky product, said process comprising mixing at least one carboxyvinyl polymer and carob gum in sufficient quantities to produce said gelled phase containing 0.3 to 0.9 percent by weight of said gelled phase of said carboxyvinyl polymer and 0.05 to 4% by weight based on the weight of said gelled phase of said carob gum, where said carboxyvinyl polymer is a cross-linked polyacrylic acid having a molecular mass ranging from 800,000 to 5,000,00.
Dependencies are inferred from the claim text.