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:
Jul. 12, 2005
Filed:
Sep. 05, 2001
Applicants:
Dietmar Gubisch, Marl, DE;
Uwe Ernst, Marl, DE;
Wilfried Bueschken, Haltern, DE;
Inventors:
Assignee:
Oxeno Olefinchemie GmbH, Marl, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C067/36 ; C07C067/00 ; C07C067/08 ; C07C067/12 ; C07C069/52 ;
U.S. Cl.
CPC ...
Abstract
Carboxylic esters are prepared by a process, which comprises reacting dicarboxylic or polycarboxylic acids or their anhydrides with alcohols in a liquid medium with the concomitant removal of water formed by the esterification reaction by azeotropic distillation together with the alcohol in the medium, wherein the amount of liquid removed from the reaction medium by azeotropic distillation is replaced in whole or in part with the alcohol.