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:
Jun. 10, 2008
Filed:
Nov. 13, 2001
Walter Disteldorf, Wachenheim, DE;
Günther Golfier, Frankenthal, DE;
Bernd Morsbach, Ludwigshafen, DE;
Kurt Schwirten, Frankenthal, DE;
Walter Disteldorf, Wachenheim, DE;
Günther Golfier, Frankenthal, DE;
Bernd Morsbach, Ludwigshafen, DE;
Kurt Schwirten, Frankenthal, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
A process is described for preparing esters of an acid component selected from among polybasic C-Ccarboxylic acids and an alcohol component selected from among C-Calkanols or from among C-Calkanediols, the alkyl chain of which may have interruption by from 1 to 3 oxygen atoms, by a) heating at boiling point, in a reaction zone and in the presence of an esterification catalyst, a mixture essentially consisting of the acid component or of an anhydride thereof and of the alcohol component, b) using rectification to separate the vapor comprising alcohol and water into an alcohol-rich fraction and a water-rich fraction, and c) returning the alcohol-rich fraction into the reaction zone and conducting the water-rich fraction out of the process. The process is simple to carry out and permits rapid achievement of essentially quantitative conversion.