Cationic starch graft copolymers and novel process for the...

C - Chemistry – Metallurgy – 08 – F

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C08F 251/00 (2006.01) D21H 17/28 (2006.01) D21H 21/20 (2006.01)

Patent

CA 2458749

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

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