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:
Nov. 24, 2009
Filed:
Oct. 12, 2005
Applicants:
Thodla Ramgopal, Karnataka, IN;
Mario Perez Collado, Cartagena, ES;
Vijaya Kumar Narasaiah, Karnataka, IN;
Ignacio Vic Fernandez, Murcia, ES;
Inventors:
Thodla Ramgopal, Karnataka, IN;
Mario Perez Collado, Cartagena, ES;
Vijaya Kumar Narasaiah, Karnataka, IN;
Ignacio Vic Fernandez, Murcia, ES;
Assignee:
SABIC Innovative Plastics IP B.V., Bergen op Zoom, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 69/96 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of making a dialkyl carbonate comprises: reacting, in a reactor comprising tantalum, an alkanol, oxygen, and carbon monoxide, in the presence of a catalyst. The reaction occurs in a mixture comprising a liquid phase wherein the liquid phase comprises about 4 to about 12 weight percent water based on the total weight of the liquid phase.