Patent ID: 6709551
Filing Date: 2004-03-23
Classification: C08F,D21H

Abstract:
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 whereinL+ is a group of formula Lâˆ’ is a group of formula W+ is â€”S+R3â€” or â€”N+R2R3â€”; Z+ is â€”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.