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. 22, 2006
Filed:
Aug. 13, 2002
Applicants:
Richard Ridinger, Monheim, DE;
Levent Yueksel, Duesseldorf, DE;
Georg Fieg, Mettmann, DE;
Inventors:
Assignee:
Cognis Deutschland GmbH & Co., KG, Duesseldorf, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C 69/96 (2006.01);
U.S. Cl.
CPC ...
Abstract
Processes for refining dialkyl carbonate-containing compositions are described, wherein a composition comprising a dialkyl carbonate is provided; and the composition is subjected to a rectification wherein low-boiling impurities are removed, and a rectification wherein high-boiling impurities are removed; and subsequently to a deodorization wherein medium-boiling impurities are removed.