Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
1991-06-11
1992-04-28
Schofer, Joseph L.
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
210733, 210732, C02F 156
Patent
active
051086220
ABSTRACT:
The invention pertains to the composition of a novel polymeric initiator and method for initiating the polymerization of vinyl monomers into water soluble polymers or block copolymers. The polymeric initiator has the formula: ##STR1## wherein M is H or a cation, R.sub.1 is a linear or branched lower alkylene group having from about 1 to 8 carbon atoms, R.sub.2 is H or a lower alkyl group having from about 1 to 5 carbon atoms and n is from 1 to 10. The resulting water soluble block copolymers are very useful in sludge dewatering applications.
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Chen Fu
Liao Wen P.
Betz Laboratories Inc.
Hill Gregory M.
Nagumo M.
Ricci Alexander D.
Schofer Joseph L.
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