Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
1993-08-03
1995-01-31
Jagannathan, Vasu S.
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
525260, 525263, 525269, 525291, 525293, 525285, 525296, 525301, 525303, 525308, 210930, C02F 156, C08F26510
Patent
active
053856767
ABSTRACT:
A method of dewatering paint spray booth sludge by adding to the water system of a paint spray booth a water soluble graft copolymer having the structure: ##STR1## wherein E is the repeat unit obtained after polymerization of an, 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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Liao Wen P.
Purnell Deborah L.
Betz Laboratories Inc.
Hill Gregory M.
Jagannathan Vasu S.
Ricci Alexander D.
Von Neida Philip H.
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