Back to results
US 2003/0155091 A1Published application
High molecular weight cationic and anionic polymers comprising zwitterionic monomers
AssigneeOndeo Nalco Company
InventorsMartin J. Coffey, Steven T. Govoni, Arthur J. Begala, Ross T. Gray, Patrick G. Murray
Life of this patent
Estimating the term…
Abstract
This invention is directed to high molecular weight water-soluble polymers comprised of zwitterionic, nonionic and cationic or anionic monomer units, and to the use of these polymers in papermaking processes.
Claims20
A high molecular weight water-soluble charged polymer comprising from about 50 to about 99.8 mole percent one or more nonionic monomers, from about 0.1 to 9.9 mole percent of one or more cationic or anionic monomers, and from about 0.1 to about 49.9 mole percent of one or more zwitterionic monomers of formula
- 10
- wherein
- L+ is a group of formula
- 11
- L− is a group of formula
- 12
- W+ is —S+R3— or —N+R2R3—,
- 13
- Z+ —N+R5R6R7;
- R1 and R8 are independently hydrogen or methyl;
- R2, R3, R4, R5, R6 and R7 are independently selected from hydrogen and C1-C4 alkyl;
- Y1, Y2, and Y3 are independently selected from O or NR2;
- m is 2 or 3;
- and
- n is 1-5.
12 more elements
Dependencies are inferred from the claim text.