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:
Sep. 21, 2010
Filed:
Feb. 15, 2008
Ignacio Vic Fernandez, Madrid, ES;
Benoit Fillion, Murcia, ES;
Vutukuru Murthy, Bangalore, IN;
Vinod Sankaran Nair, Bangalore, IN;
Mario Perez Collado, Murcia, ES;
Ignacio Vic Fernandez, Madrid, ES;
Benoit Fillion, Murcia, ES;
Vutukuru Murthy, Bangalore, IN;
Vinod Sankaran Nair, Bangalore, IN;
Mario Perez Collado, Murcia, ES;
Sabic Innovative Plastics IP B.V., Bergen op Zoom, NL;
Abstract
The present invention provides methods of forming dialkyl carbonate wherein catalyst buildup in the reaction equipment, the separation equipment, and transfer lines there between is reduced and even eliminated. In one embodiment, the method includes introducing alkanol, carbon monoxide, oxygen, and a catalyst to a reactor having a gaseous head space and a liquid body space. The reactor is operated under conditions to form dialkyl carbonate and water. A product stream containing dialkyl carbonate, water, and residual reactants is removed from the head space of the reactor and introduced to a cyclone with a flushing stream. A liquid bottom stream is captured from the cyclone and introduced to the reactor. The gaseous top stream contains product dialkyl carbonate.