| abstract |
Water-soluble, hydrophobically-associating copolymer, and use of copolymers The invention relates to water-soluble, hydrophobically-associated copolymers containing novel hydrophobically-associated monomers. the monomers comprise an ethylenically unsaturated group and a polyether group having a block structure consisting of a hydrophilic polyalkylene oxide block consisting essentially of ethylene oxide groups and a terminal hydrophobic polyalkylene oxide block which consists of alkylene oxides of at least 4 and preferably at least 5 carbon atoms. |