| abstract |
The invention relates to a polymer composition comprising a first host polymer, which is a copolymer of (meth)acrylamide and at least one cationic first monomer, and a second polymer, which is a copolymer of (meth)acrylamide and at least one cationic second monomer. The second polymer is polymerised in presence of the first host polymer, and the first host polymer has a higher cationicity than the second polymer, the difference in cationicity of the first host polymer and the second polymer being at least 3 mol-%, preferably at least 5 mol-%, more preferably at least 7 mol-%. The polymer composition has a standard viscosity of > 2.0 m Pas, measured at 0.1 weight-% solids content in an aqueous Na Cl solution (1 M), at 25 ° C, using Brookfield DVII T viscometer with UL adapter. The invention relates also to uses of said polymer composition. |