| abstract |
The present invention relates to a process for the preparation of hydrophobically-linked macromonomer M and to novel macromonomers prepared by the process according to the invention. The macromonomer M comprises a copolymerization, an ethylenically unsaturated group and a polyether structure in the form of a block, the latter is composed of a polyethyleneoxy block, and the hydrophobic polyalkyleneoxy block is composed of an alkyleneoxy unit having 4 or more carbon atoms. Optionally, macromonomer M may comprise a terminal polyethyleneoxyblock. The macromonomers produced by the process according to the invention are suitable for producing water-soluble, hydrophobically-linked copolymers by reacting with other monomers, in particular acrylamide. |