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:
Feb. 17, 2009
Filed:
Aug. 15, 2003
Richard H. Schlosberg, Bridgewater, NJ (US);
J. Scott Buchanan, Lambertville, NJ (US);
Jose Guadalupe Santiesteban, Bethlehem, PA (US);
Zhaozhong Jiang, Edison, NJ (US);
William A. Weber, Burlington, NJ (US);
Richard H. Schlosberg, Bridgewater, NJ (US);
J. Scott Buchanan, Lambertville, NJ (US);
Jose Guadalupe Santiesteban, Bethlehem, PA (US);
Zhaozhong Jiang, Edison, NJ (US);
William A. Weber, Burlington, NJ (US);
Badger Licensing LLC., Cambridge, MA (US);
Abstract
An integrated process for the production of a dialkyl carbonate and a diol from an alkylene oxide, carbon dioxide and an aliphatic monohydric alcohol is described in which an alkylene oxide is first reacted with carbon dioxide in the presence of a halogen-free carbonation catalyst to provide a corresponding cyclic carbonate and the cyclic carbonate is then reacted with an aliphatic monohydric alcohol in the presence of the carbonation catalyst and/or a transesterification catalyst and recycling the carbonation catalyst to provide a corresponding dialkyl carbonate and diol, wherein the dialkyl carbonate product exhibits a halogen concentration of about 5 ppm or less.