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1. (WO2001004201) HIGH MOLECULAR WEIGHT ZWITTERIONIC POLYMERS

Pub. No.:    WO/2001/004201    International Application No.:    PCT/US2000/017841
Publication Date: Fri Jan 19 00:59:59 CET 2001 International Filing Date: Thu Jun 29 01:59:59 CEST 2000
IPC: C02F 1/56
C08F 246/00
D21H 17/41
D21H 21/10
Applicants: NALCO CHEMICAL COMPANY
Inventors: CARTER, Phillip, W.
MURRAY, Patrick, G.
BRAMMER, Larry, E., Jr.
DUNHAM, Andrew, J.
Title: HIGH MOLECULAR WEIGHT ZWITTERIONIC POLYMERS
Abstract:
This invention is directed to high molecular weight water-soluble zwitterionic polymers derived from zwitterionic and nonionic monomer units, and to the use of the polymers in papermaking processes.