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US 4,376,708 AGranted
Flotation processes using ureylenes
AssigneePetrolite Corporation
InventorThomas J. Bellos
Life of this patent
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Abstract
This invention relates to ureylene prepared by reacting an oxyalkylated polyamine with urea and to uses of such ureylene for example in removing oils, solids, and combinations thereof from aqueous systems, etc.
Claims6
A flotation process of removing particulate matter from an aqueous system which comprises employing a ureylene derived from first reacting a polyamine with about 0.5 to 0.8 mole of an oxyalkylating agent per NH equivalents of said polyamine, and thereafter reacting said oxyalkylated polyamine with urea.
Dependencies are inferred from the claim text.