Charged organic polymer microbeads in paper-making process

Details Charged organic polymer microbeads in paper-making process Charged organic polymer microbeads in paper-making process

1992-05-21

1993-12-28

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524555, 524556, 524827, 524829, 524831, 524437, C08L 300

Patent

active

052740552

ABSTRACT:
In a papermaking process, improved drainage and retention are obtained when ionic, organic microbeads of less than about 1,000 nm in diameter if crosslinked or less about than 60 nm in diameter if noncrosslinked are added either alone or in combination with a high molecular weight organic polymer, and/or polysaccharide. Further addition of alum enhances drainage formation and retention properties in papermaking stock with and without the present of other additives used in papermaking processes.

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