US Patent 7915434 Method for producing propylene oxide

Patent 7915434 was granted and assigned to Sumitomo Chemical on March, 2011 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

Sumitomo Chemical

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

79154340

Patent Inventor Names

Hiroaki Abekawa0

Tateo Seo0

Date of Patent

March 29, 2011

Patent Application Number

122267300

Date Filed

April 26, 2007

Patent Primary Examiner

‌

Janet L. Andres

Patent abstract

A method for producing propylene oxide comprising a step of reacting hydrogen peroxide with propylene in the presence of an epoxidation catalyst in a liquid phase to produce propylene oxide and a step of recovering a recyclable constituent in a vent gas generated in the above step by absorbing the recyclable constituent in a solvent containing a nitrile.

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