Linear basic polymers, their preparation and their use

Details Linear basic polymers, their preparation and their use Linear basic polymers, their preparation and their use

C - Chemistry, Metallurgy

08

F

402/114, 9/53, 4

C08F 8/00 (2006.01) C08F 120/54 (2006.01) D21H 17/34 (2006.01) D21H 17/45 (2006.01)

Patent

CA 1175192

Abstract of the Disclosure: Linear basic polymers contain- ing, as characteristic components, from 90 to 10 mole % of copolymerized unit of the formula Image and from 10 to 90 mole % of copolymerized units of the formula Image are obtained by polymerizing the compound of the formula CH2=CH-NH-CHO (N-vinylformamide) to a polyvinylformamide in the presence of a free radical polymerization initiator and splitting off of the formyl group from the resulting polymer at from 20 to 200°C in the presence of an acid or base. The reaction products are used as retention agents, drainage assistants and flocculants in papermaking.

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