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

1982-07-12

1983-12-20

Schofer, Joseph L.

Paper making and fiber liberation

Processes and products

Non-fiber additive

5263031, 5253282, C08F 2236, D21H 338

Patent

active

044216025

ABSTRACT:
Linear basic polymers containing, as characteristic components, from 90 to 10 mole % of copolymerized units of the formula ##STR1## and from 10 to 90 mole % of copolymerized units of the formula ##STR2## are obtained by polymerizing the compound of the formula CH.sub.2 .dbd.CH--NH--CHO (N-vinylformamide) to a polyvinylformamide in the presence of a free radical polymerization initiator and splitting off the formyl group from the resulting polymer at from 20.degree. to 200.degree. in the presence of an acid or base. The reaction products are used as retention agents, drainage assistants and flocculants in papermaking.

REFERENCES:
patent: 3597314 (1971-08-01), Laube et al.
patent: 3609132 (1971-09-01), Tsuk et al.
patent: 3702800 (1972-11-01), Tsuk et al.
patent: 4070530 (1978-01-01), Hobbs
Chemical Abstracts, vol. 84, No. 2, Jan. 12, 1976, No. 5731h.

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