The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 27, 2014
Filed:
Nov. 24, 2010
Prasad Muppa, Vondelingenplaat, NL;
Caspar Schoolderman, Vondelingenplaat, NL;
Sandra Rens Van Der Lee, Vondelingenplaat, NL;
Ron Postma, Vondelingenplaat, NL;
Prasad Muppa, Vondelingenplaat, NL;
Caspar Schoolderman, Vondelingenplaat, NL;
Sandra Rens Van Der Lee, Vondelingenplaat, NL;
Ron Postma, Vondelingenplaat, NL;
Momentive Specialty Chemicals Inc., Columbus, OH (US);
Abstract
A process for the manufacture of propylene oxide ('PO') by catalytic oxidation of propylene with an oxidant wherein the catalytic oxidation is performed in an aqueous reaction medium, comprising water with less than 10% by volume of cosolvents, wherein a water-soluble manganese complex is used as oxidation catalyst, characterized in that the water-soluble manganese complex is a mononuclear species of the general formula (I):[LMnX]Y   (I)or a binuclear species of the general formula (II):[LMn(μ-X)MnL]Y  (II)wherein Mn is a manganese; L or each L independently is a polydentate ligand, each X independently is a coordinating species and each μ-X independently is a bridging coordinating species, whereas Y is an non-coordinating counterion, and wherein the catalytic oxidation is carried out at a pH in the range of from 1.5 to 6.0.