| abstract |
Water-soluble polymer composition obtained by polymerizing in an aqueous polymerization medium, comprising degraded starch, at least the following monomers - acrylamide and / or methacrylamide, and -> 2% by mole, calculated from the total monomer content, of al less one unsaturated monocarboxylic or dicarboxylic acid or its salts, the polymer composition having a net anionic charge in the range of -0.5 to -2.5 meq / g, at pH 7, as determined in the specification, and a dry solids content of> 5% by weight. |