Abstract: The present invention concerns a process for epoxidizing an olefin to an oxirane by forming a monopercarboxylic acid in-situ by reacting a cyclic anhydride of a polybasic acid with hydrogen peroxide in the presence of a basic catalyst and recovering the oxirane as a distillate.
Abstract: The present invention is a process to stimulate the biooxidation of a contaminant in a subterranean formation by introducing an aqueous solution into the formation. The concentration of the hydrogen peroxide is increased thereby acclimating the biota to higher concentrations of hydrogen peroxide. Periodically the concentration of the hydrogen peroxide is increased for a short time sufficiently to be toxic to the biota at or relatively adjacent to the site of introduction, thereby increasing the permeability of the formation at or adjacent to the site of introduction.
Type:
Grant
Filed:
November 8, 1984
Date of Patent:
May 13, 1986
Assignee:
FMC Corporation
Inventors:
Richard L. Raymond, Richard A. Brown, Robert D. Norris, Eugene T. O'Neill
Abstract: Difluoroethenylcyclopropanecarboxylates of the formula ##STR1## in which R is a selected biphenylmethyl, bridged biphenylmethyl or 4-phenyl-2-indanyl group, having a high level of activity against acarids are disclosed.
Type:
Grant
Filed:
April 25, 1985
Date of Patent:
November 12, 1985
Assignee:
FMC Corporation
Inventors:
Ernest L. Plummer, John F. Engel, Richard B. Phillips