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:
Jan. 10, 2017
Filed:
May. 28, 2015
Basf SE, Ludwigshafen, DE;
Andrei-Nicolae Parvulescu, Ruppertsberg, DE;
Armin Lange De Oliveira, Heidelberg, DE;
Stephan A. Schunk, Heidelberg-Rohrbach, DE;
Nicolai Tonio Woerz, Darmstadt, DE;
Marco Hartmann, Woerth, DE;
Kazuhiko Amakawa, Mannheim, DE;
Michael Goebel, Mannheim, DE;
Yong Liu, Limburgerhof, DE;
Michael Lejkowski, Neckargemuend, DE;
BASF SE, Ludwigshafen, DE;
Abstract
A process for preparing acrylic acid, comprising (i) providing a stream S4 comprising a formaldehyde source and acetic acid; (ii) contacting stream S4 with an aldol condensation catalyst comprising a zeolitic material comprising aluminum in the framework structure to obtain a stream S6 comprising acrylic acid, the framework structure of the zeolitic material in (ii) comprising YOand AlO, and Y being a tetravalent element; where the total content of alkali metal and alkaline earth metal in the zeolitic material in (ii), calculated as alkali metal oxide and alkaline earth metal oxide, is from 0% to 0.1% by weight, based in each case on the total weight of the zeolitic material, and where the aldol condensation catalyst in (ii) comprises, outside the framework structure of the zeolitic material present therein, from 0% to 1% by weight of vanadium, based on vanadium as vanadium(V) oxide.