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:
Mar. 09, 2021
Filed:
Aug. 13, 2018
Basf SE, Ludwigshafen am Rhein, DE;
Ortmund Lang, Ludwigshafen, DE;
Tim Blaschke, Antwerp, BE;
Christian Raith, Ludwigshafen, DE;
Michael Schafranka, Ludwigshafen, DE;
Claus Hechler, Ludwigshafen, DE;
BASF SE, Ludwigshafen am Rhein, DE;
Abstract
A process for continuously preparing a butyl acrylate HC═CH—C(═O)OR, with R=n-butyl or isobutyl, wherein aqueous 3-hydroxypropionic acid is converted under dehydrating and esterifying conditions in the presence of the corresponding butanol R—OH in a reactor with a rectification column and butyl acrylate formed, unconverted butanol and water used and formed are distilled off overhead as a ternary azeotrope, after separation into a liquid aqueous phase and liquid organic phase each of the aqueous and organic phases is at least partly discharged, and the organic phase comprising the butyl acrylate and the butanol is subjected to distillative separation.