Patent ID: 6635702
Filing Date: 2003-10-21
Classification: A61K,A61Q,C11D

Abstract:
A stable, aqueous surfactant containing composition, comprising:a. at least one anionic, zwitterionic, amphoteric, nonionic, or cationic surfactant, or combinations thereof; b. at least one substantially crosslinked alkali-swellable acrylate copolymer rheology modifier; c. water; d. an effective amount of at least one alkaline material to yield a composition having a pH of from about 5 to about 14; and e. an effective amount of a subsequently added acidic material to yield a composition having a reduced pH of from about 1 to about 12; wherein said at least one crosslinked alkali-swellable acrylate copolymer comprises: f. about 20% to about 80% by weight of at least one carboxylic acid monomer comprising acrylic acid, methacrylic acid, itaconic acid, fumaric acid, crotonic acid, aconitic acid, or maleic acid, or combinations thereof; g. about 80% to about 15% by weight of at least one &agr;,&bgr;-ethylenically unsaturated monomer, wherein said monomer has the formula: CH2&boxH;CXY,â€ƒâ€ƒi) where X is H and Y is â€”COOR, â€”C6H4Râ€², â€”CN, â€”CONH2, â€”Cl, â€”NC4H6O, NH(CH2)3COOH, â€”NHCOCH3, â€”CONHC(CH3)3, â€”COâ€”N(CH3)2, or X is CH3 and Y is â€”COOR, â€”C6H4Râ€², â€”CN; or â€”CH&boxH;CH2; or X is Cl and Y is Cl, and R is C1-C18 alkyl or lydroxy C2-C18 alkyl, Râ€² is H or C1-C18 alkyl or having the formula: CH2&boxH;CH (OCOR1);â€ƒâ€ƒii) where R1 is C1-C18 alkyl; or having the formula: CH2&boxH;CH2 or CH2&boxH;CHCH3, andâ€ƒâ€ƒiii) h. from about 0.01 to about 5% by weight of at least one polyunsaturated compound useful in forming a partially or substantially crosslinked three dimensional network.