Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
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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Chen Fu
Liao Wen P.
Betz Laboratories Inc.
Hill Gregory M.
Jagannathan Vasu S.
Ricci Alexander D.
Seidleck James J.
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