| 主权项 |
1. 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 which 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. |
