COMPOSITIONS OF VISCOELASTIC SURFACTANT AND HYDROPHOBICALLY MODIFIED POLYMER AS AQUEOUS THICKENERS

摘要

The invention relates to an aqueous viscoelastic composition comprising at least one viscoelastic surfactant selected from the group consisting of amine oxide and amidoamine oxide surfactants, and at least one hydrophobically modified polymer, which is formed from polymerization of ethylenically unsaturated monomers; has a number average molecular weight of from 1,000 to 90,000 Da; and to a level of at least 0.1 mole%, based on the amount of monomer units in the polymer, contains monomeric units each covalently bonded to a pendant, optionally alkoxylated, hydrocarbyl group which is a linear or branched alkyl or alkenyl group having from 6 to 40 carbon atoms, said pendant, optionally alkoxylated, hydrocarbyl group being connected to the backbone of the hydrophobically modified polymer via a linking group selected from the group consisting of urea, urethane, imide, amide and direct bond containing linking groups.