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:
Aug. 23, 2005
Filed:
Mar. 06, 2003
Applicants:
Toshiyasu Sakakura, Ibaraki, JP;
Hiroyuki Yasuda, Ibaraki, JP;
Inventors:
Toshiyasu Sakakura, Ibaraki, JP;
Hiroyuki Yasuda, Ibaraki, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D317/12 ; B01J031/00 ;
U.S. Cl.
CPC ...
Abstract
The present invention provides an alkylene-carbonate synthesis catalyst comprising a compound insoluble to one phase containing alkylene carbonate produced when the alkylene oxide and carbon dioxide are reacted with the catalyst and soluble to the other phase substantially free of alkylene carbonate. The catalyst allows alkylene carbonate to be produced with high yield and selectivity and be readily collected. The catalyst also facilitates repeated or continuous reaction process in a cost-effective manner. The present invention also provides an apparatus for producing alkylene carbonate using the catalyst.