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:
Dec. 27, 2011
Filed:
Apr. 05, 2010
Applicants:
Albert C. Liu, Charleston, WV (US);
Liping Zhang, Lake Jackson, TX (US);
Inventors:
Albert C. Liu, Charleston, WV (US);
Liping Zhang, Lake Jackson, TX (US);
Assignee:
Dow Technology Investments LLC, Midland, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D 301/03 (2006.01); C07C 209/00 (2006.01); C07C 31/18 (2006.01); C07C 27/00 (2006.01); C07C 41/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for enhancing the efficiency of a rhenium-promoted epoxidation catalyst is provided. Advantageously, the method may be carried out in situ, i.e., within the epoxidation process, and in fact, may be carried out during production of the desired epoxide. As such, a method for the epoxidation of alkylenes incorporating the efficiency-enhancing method is also provided, as is a method for using the alkylene oxides so produced for the production of 1,2-diols, 1,2-carbonates, 1,2-diol ethers, or alkanolamines.