Water soluble graft copolymers and methods of use thereof

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

1991-04-25

1993-05-18

Seidleck, James J.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

525260, 525263, 525269, 525291, 525293, 525285, 525296, 525301, 525303, 525308, C02F 156, C08F26510

Patent

active

052118541

ABSTRACT:
A water soluble graft copolymer useful for dewatering wastewater having the structure: ##STR1## wherein E is the repeat unit obtained after polymerization of an .alpha.,.beta. ethylenically unsaturated compound the molar percentage of a:b is from about 95:5 to 5:95 with the proviso that the sum of a and b equals 100%; G comprises the structure: ##STR2## wherein d is a cationic monomer, R.sub.1, R.sub.2 and R.sub.3 are the same or different and are hydrogen or a lower alkyl group having C.sub.1 to C.sub.3, F is the salt of an ammonium cation and the molar percentage of c:d is from 95:5 to 5:95 with the proviso that the sum of c and d equals 100%.

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Smirnova et al., Journal of Polymer Science, vol. 29, pp. 139-145, 1991 "Complexing Effect in the Reaction of Graft Polymerization Proceeding by the Coordination-Radical Mechanism With the Participation of Copper Ions".
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