Method for improving retention and drainage characteristics in a

Details Method for improving retention and drainage characteristics in a Method for improving retention and drainage characteristics in a

1994-03-24

1995-05-16

Jagannathan, Vasu S.

Paper making and fiber liberation

Processes and products

Non-fiber additive

524447, D21H 1737

Patent

active

054157404

ABSTRACT:
A composition and method for improving the drainage and retention characteristics of a paper furnish consisting of a water soluble graft copolymer and bentonite clay. It is preferred that the graft copolymer be added to the furnish prior to at least one shear stage and that the bentonite clay be added after the shear stage.

REFERENCES:
patent: 3976552 (1976-08-01), Fanta
patent: 4749444 (1988-06-01), Lorz
patent: 4753710 (1988-06-01), Langley et al.
patent: 4913775 (1990-04-01), Langley et al.
patent: 4969976 (1990-11-01), Reed
patent: 5132285 (1992-07-01), Tsai
patent: 5211854 (1993-05-01), Liao et al.
patent: 5374336 (1994-12-01), Lin

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