| abstract |
The invention relates to a water-soluble, hydrophobic-associating copolymer, which contains novel hydrophobic-associating monomers. The monomers contain one ethylene-unsaturated group, as well as a polyether group with a block structure of one hydrophilic polyalkylene oxide block, which consists mainly of ethylene oxide groups, and one end, hydrophobic polyalkylene oxide block, which consists of alkylene oxide containing at least 4, preferably at least 5 carbon atoms. |