Back to results
US 9,790,345 B2Granted
Acid suppressible rheology modifier stabilized with phosphoric acid ester surfactant
AssigneeRohm and Haas Company
InventorsDouglas R. Hawkins, Alvin M. Maurice, John J. Rabasco
Life of this patent
Estimating the term…
Abstract
The present invention relates to a composition comprising an aqueous solution of an acid suppressible hydrophobically modified alkylene oxide polymer and a phosphoric acid ester surfactant. The composition of the present invention provides a pourable thickener with high solids content and good phase stability.
Claims9
A composition comprising, based on the weight of the composition:
- (a) 10% to 40% by weight of a water soluble hydrophobically modified alkylene oxide polymer having a hydrophobic portion, at least 50% by weight of the hydrophobic portion comprises structural units of a conjugate acid of a secondary or a tertiary amine substituted with C6-C36-alkyl, C3-C8 cycloalkyl, C6-C20-aryl, or a combination thereof, which hydrophobic portion is optionally functionalized with O, OH, NH, or N—C1-C6-alkyl, or a combination thereof;
- (b) 0.1% to 15% by weight a phosphoric acid ester or a salt thereof, wherein the phosphoric acid ester is represented by either or both of the following formulas:
- where R1 is C6-C19 alkyl, C6-C19 alkylphenyl, or tristyrylphenyl;
- and n is 0 to 20;
- and
- (c) 45% to 90% by weight of water;
- wherein the composition has a pH of less than 6.
4 more elements
Dependencies are inferred from the claim text.