Abstract: An aqueous composition for inhibiting the corrosion of metals is described. The composition comprises a non-oxidizing acid, and, as a corrosion inhibitor, an effective amount of a 3-dialkylamino-3-(1-ethylpentyl)prop-1-yne.
Type:
Grant
Filed:
February 25, 1982
Date of Patent:
December 6, 1983
Assignee:
GAF Corporation
Inventors:
Eugene V. Hort, Lowell R. Anderson, Dru W. Alwani
Abstract: A process for removing alkynes from hydrocarbon mixtures, particularly those containing butadiene by reacting the alkynes with hydroxyl group containing organic compounds in the presence of a silver exchanged ion-exchange resin and separating the products formed from the unreacted components of said mixture.
Type:
Grant
Filed:
October 23, 1981
Date of Patent:
July 12, 1983
Assignee:
The Dow Chemical Company
Inventors:
Albert Heuvelsland, Fritz F. F. Jann, Greet de Block-Martens
Abstract: In order to prevent corrosion of the apparatus in extraction and extractive distillation processes where N-substituted morpholine is employed as the selective solvent an additive is added to the solvent which additive consists of (a) phosphoric acid, (b) a salt thereof, (c) a vanadium compound, (d) a molybdenum compound or (e) a mixture of two or more of these compounds, the addition being effected in an amount of about 0.005 to 0.02% by weight of the morpholine solvent.
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