Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Reexamination Certificate
2005-06-23
2008-10-07
Hruskoci, Peter A. (Department: 1797)
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
C210S734000, C210S735000, C210S736000, C516S148000, C516S161000, C516S179000
Reexamination Certificate
active
07431845
ABSTRACT:
A method of clarifying oily waste water comprising adding to the waste water an effective clarifying amount of one or more demulsifiers selected from the group consisting of dendritic polyamines, dendritic polyamidoamines and hyperbranched polyethyleneimines and the reaction products thereof with gluconolactone, alkylene oxides, salts of 3-chloro-2-hydroxypropanesulfonic acid, alkyl halides, benzyl halides and dialkyl sulfates.
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Clever Hester A.
Howdeshell Michael J.
Manek Maria B.
Stephenson William K.
Wells Kirk E.
Hruskoci Peter A.
Martin Michael B.
Nalco Company
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