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, 2017
Filed:
Nov. 10, 2016
Basf SE, Ludwigshafen am Rhein, DE;
Marco Hartmann, Jockgrim, DE;
Lukas Schulz, Mannheim, DE;
Nicolai Tonio Woerz, Darmstadt, DE;
Yong Liu, Shanghai, CN;
Till Christian Brueggemann, Ludwigshafen, DE;
Michael Lejkowski, Neckargemuend, DE;
Johannes Lieberknecht, Limburgerhof, DE;
BASF SE, Ludwigshafen am Rhein, DE;
Abstract
A process for preparing acrylic acid from formaldehyde and acetic acid, is performed by (i) providing a gaseous stream S1 comprising formaldehyde, acetic acid, oxygen and water, where the formaldehyde content of stream S1 is in the range from 8% to 18% by volume, based on the total volume of stream S1, the ratio of the volumes of acetic acid to formaldehyde is in the range from 0.6:1 to 1.1:1, and the molar ratio of oxygen to the total amount of organic carbon is in the range from 0.02:1 to 0.15:1; and (ii) contacting stream S1 with an aldol condensation catalyst in a reaction zone to obtain a gaseous stream S2 containing acrylic acid.