abstract |
Cationic starch graft copolymer composed of the monomers a) to d) n a) 20-80% by weight of acrylamide, methacrylamide or mixtures thereof, n b) 3-20% by weight of at least one basic or cationic vinyl monomer, n c) 0.005-1.5% by weight of at least one bifunctional or higher-functional crosslinking agent, n d) 0-10% by weight of at least one nonionic or anionic vinyl monomer which differs from the monomers mentioned under a) to c) n and a grafting base e) n e) 15-70% by weight of at least one starch or one starch derivative, n the sum of a) to e) being 100% by weight. |