| abstract |
The present invention relates to a cationic polymer obtainable by polymerization of at least one cationic monomer, at least one crosslinker and, optionally, other monomers, such as non-ionic monomers, associative monomers and/or chain transfer agents. The cationic polymer has at least a bimodal molecular weight distribution with at least one first peak (P1) and at least one second peak (P2), wherein the first peak has a rather low mean sedimentation coefficient of ≥10 Sved and the second peak has a rather high mean sedimentation coefficient of = 10,000 Sved. The water-soluble polymeric components of the cationic polymer are ≥ 25% by weight, based on the total amount of cationic polymer. The present invention further relates to a process for obtaining such a cationic polymer, as well as an inverse dispersion, a thickener or a deposition aid, comprising at least one such cationic polymer. |