Patent ID: 7803864

Claim:
An aqueous composition, comprising: a first associative thickener having at least one hydrophilic segment and at least two hydrophobic segments and a Mw of 6,000 to 21,000; a second associative thickener having at least one hydrophilic segment and at least two hydrophobic segments and a Mw of 30,000 to 100,000; and a latex polymer, wherein the Mw of the second associative thickener is at least 1.5 times the Mw of the first associative thickener, the hydrophobic segments of the first associative thickener and the second associative thickener have a hydrophobic substituent of at least four carbon atoms, and a concentration of the second associative thickener is greater than 1.5 times a concentration of the first associative thickener wherein the first and second associative thickeners each comprise a thickener selected from the group consisting of nonionic hydrophobically-modified ethylene oxide urethane copolymers, nonionic hydrophobically-modified ethylene oxide ether copolymers, nonionic hydrophobically-modified ethylene oxide glycouril copolymers, hydrophobically-modified alkali soluble emulsions, hydrophobically-modified poly(meth)acrylic acids, and hydrophobically-modified poly(acrylamide), and mixtures thereof.