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:
Dec. 20, 2005
Filed:
Jun. 02, 2003
Jan Van DE Broek, Bergen op Zoom, NL;
Stephan Bouwens, Bergen op Zoom, NL;
Maarten Campman, Roosendaal, NL;
Daniel Favre, Rensselaer, NY (US);
Cornelis Adrianus Maria Van Gool, Kapellen, BE;
Leon Kalle, Almere, NL;
George P. Moloney, Jr., Mechnaicville, NY (US);
Jan van de Broek, Bergen op Zoom, NL;
Stephan Bouwens, Bergen op Zoom, NL;
Maarten Campman, Roosendaal, NL;
Daniel Favre, Rensselaer, NY (US);
Cornelis Adrianus Maria van Gool, Kapellen, BE;
Leon Kalle, Almere, NL;
George P. Moloney, Jr., Mechnaicville, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
A method of preparing a dialkyl carbonate includes reacting an alkanol, oxygen, carbon monoxide, and a catalyst to form a mixture that includes a dialkyl carbonate and an alkyl chloroformate. The mixture is separated into a liquid fraction and a gaseous fraction, and alkyl chloroformate is removed from the gaseous fraction. Also described is an apparatus for carrying out the method. The method is particularly useful for preventing corrosion in a cold wash unit that removes further organic impurities from the gaseous fraction.