Water soluble terpolymers and methods of use thereof

Details Water soluble terpolymers and methods of use thereof Water soluble terpolymers and methods of use thereof

C - Chemistry, Metallurgy

08

F

C08F 220/00 (2006.01) C02F 5/12 (2006.01) C08F 216/12 (2006.01) C08F 216/14 (2006.01) C08F 220/06 (2006.01) C08F 220/58 (2006.01)

Patent

CA 2059963

-19- ABSTRACT A water soluble terpolymer useful in controlling deposition of scale in aqueous systems comprised of monomeric repeat units (g), (h) and (i) wherein repeat unit (9) comprises the structure Image wherein E is the repeat unit obtained after polymerization of an .alpha.,.beta. ethylenically unsaturated compound, wherein repeat unit (h) comprises the structure Image wherein R1 and R2 are the same or different and denote H, methyl or ethyl and M is a water soluble cation or H, and -20- wherein repeat unit (i) comprises the structure Image wherein R3 is H or a lower alkyl (C1-C3), R4 is a hydroxy substituted alkyl or alkylene group having from 1 to about 6 carbon atoms or a non-substituted alkyl or alkylene group having from 1 to about 6 carbon atoms, X is an anionic radical, Z is H, hydrogen atoms or a water soluble cation or cations which together counterbalance the valance of X and a is 0 or 1.

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