DMDAAC/AM copolymers as deinkers

Details DMDAAC/AM copolymers as deinkers DMDAAC/AM copolymers as deinkers

1984-08-02

1988-11-22

Schor, Kenneth M.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

D21C 502

Patent

active

047863641

ABSTRACT:
The instant invention is directed to a method for deinking cellulosic fibrous material impregnated with ink wherein a mixture of said material and water is stirred in the presence of a deinking agent, the improvement wherein the deinking agent is a hydrolyzed copolymer of dimethyldiallyl ammonium chloride and acrylamide.

REFERENCES:
patent: 3639208 (1972-02-01), Varveri et al.

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