Method for improving retention and drainage characteristics in a

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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1621683, C08L 5106, D21H 1737

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active

055323081

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.

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patent: 5298566 (1994-03-01), Liao et al.
"Pulp & Paper Chemistry of Chemical Technology", 3d ed., vol. III, 1981, pp. 1593-1607.
Betz Handbook of Industrial Water Conditioning, 9th ed., 1991, pp. 22-30.

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