Polyalkanolamines
AssigneePetrolite Corporation
InventorsThomas J. Bellos, Eva G. Lovett
Life of this patent
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Abstract
Polyalkanolamines of controlled molecular weights and their uses as demulsifiers and/or flotation agents.
Claims16
Polyalkanolamines which have an osmometer molecular weight of from about 325 to 525, a viscosity of about 65 to 150 SUS at 50% aqueous solution by weight at 100.degree. F. and which do not exhibit a peak at 46.6 ppm on .sup.13 C nmr spectrum in D.sub.2 O.
The process of making polyalkanolamines which comprises heating alkanolamines in the presence of a catalytically effective amount of zinc chloride or aluminum sulfate catalysts at a temperature and for a time sufficient to yield polyalkanolamines having a viscosity of about 65 to 150 SUS at 50% aqueous solution by weight at 100.degree. F. and which do not exhibit a peak at 46.6 ppm on .sup.13 C nmr spectrum in D.sub.2 O.
Dependencies are inferred from the claim text.