Water soluble block copolymers and methods of use thereof

Details Water soluble block copolymers and methods of use thereof Water soluble block copolymers and methods of use thereof

1991-02-26

1993-01-26

Seidleck, James J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525273, 525299, 525308, 525263, 210734, 252180, C08F29300, C02F 1112

Patent

active

051823314

ABSTRACT:
A composition and method of use thereof for the treatment of wastewater comprising a block copolymer having the formula: ##STR1## 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, R.sub.1 and R.sub.2 are the same or different and are H or a lower alkyl group from C.sub.1 to C.sub.3 and F is a salt of an ammonium cation.

REFERENCES:
patent: 3984333 (1976-10-01), van de Kraats et al.
patent: 4492785 (1985-01-01), Valint, Jr. et al.
patent: 4521580 (1985-04-01), Turner et al.
patent: 4540498 (1985-09-01), Wu et al.
patent: 4755563 (1988-07-01), West
patent: 4835234 (1989-05-01), Valint et al.
patent: 4906716 (1990-03-01), Yang et al.
patent: 5035806 (1991-07-01), Fong et al.

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