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

C - Chemistry, Metallurgy

08

L

C08L 1/00 (2006.01) C08L 101/00 (2006.01) D21H 17/20 (2006.01) D21H 17/24 (2006.01) D21H 17/33 (2006.01) D21H 21/54 (2006.01)

Patent

CA 2044698

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 noncrasslinked 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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