Water soluble block copolymers and methods of use thereof

C - Chemistry – Metallurgy – 08 – F

Patent

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C08F 293/00 (2006.01) C02F 1/54 (2006.01) C02F 1/56 (2006.01) C02F 11/14 (2006.01)

Patent

CA 2060042

A composition and method of use thereof for the treatment of wastewater comprising a block copolymer having the formula: (see formula I) wherein E is a polymeric segment obtained from the polymerization of hydrophobic monomers, x when present is a nonionic monomer, y is a cationic monomer, R1 and R2 are the same or different and are H or a lower alkyl group from C1 to C3 and X is a salt of an ammonium cation.

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