Patent ID: 6361781
Filing Date: 2002-03-26
Classification: A61K,A61Q,Y10S

Abstract:
An emulsion composition, comprising:an aqueous phase; an oily phase; at least one hydrophilic thickening compound; and at least one lipophilic thickening copolymer which contains at least one hydrophobic unit in an amount sufficient to achieve partial or complete solubility in said oily phase and at least one hydrophilic unit in an amount sufficient to produce thickening of said oily phase; wherein said hydrophilic unit is formed from entities chosen from: C3-C6 monocarboxylic acids with &agr;,&bgr;-ethylenic unsaturation, C4-C6 dicarboxylic acids with &agr;,&bgr;-ethylenic unsaturation, and the monoester and monoamide derivatives of C4-C6 dicarboxylic acids with &agr;,&bgr;-ethylenic unsaturation; wherein said at least one hydrophilic thickening compound is chosen from: polysaccharide biopolymers; aluminium magnesium silicates; polyacrylic acids chosen from poly(glyceryl(meth)acrylate) polymers, acrylic acid homopolymers, which may or may not be crosslinked, and salts thereof; polyacrylamide-based polymers; copolymers which may or may not be crosslinked, containing: a major fraction of monomeric units originating from monomers chosen from mono-olefinically unsaturated C3-C6 carboxylic acid monomers and of mono-olefinically unsaturated C3-C6 carboxylic anhydride; a minor fraction of monomeric units originating from monomers chosen from esters with a fatty chain of acrylic acid monomer; crosslinked poly(2-acrylamido-2-methyl-propanesulphonic acid) polymers which may be substantially or completely neutralized, containing randomly distributed: units of formula (1): in which: X+ is chosen from cations, wherein not more than 10 mol % of said cations are H+ protons, and further wherein said unit of formula (1) is present in an amount ranging from 90 to 99.9% by weight of said crosslinked poly(2-acrylamido-2-methyl-propanesulphonic acid) polymers;crosslinking units produced from at least one monomer having at least two olefinic double bonds, wherein said crosslinking units are present in an amount ranging from 0.01 to 10% by weight of said crosslinked poly(2-acrylamido-2-methyl-propanesulphonic acid) polymers; and inorganic thickeners chosen from smectites and hectorites, which may be modified or unmodified.