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:
Sep. 20, 2016
Filed:
May. 28, 2015
Basf SE, Ludwigshafen, DE;
Andrei-Nicolae Parvulescu, Ruppertsberg, DE;
Armin Lange De Oliveira, Heidelberg, DE;
Michael Lejkowski, Neckargemuend, DE;
Nicolai Tonio Woerz, Darmstadt, DE;
Marco Hartmann, Woerth, DE;
Kazuhiko Amakawa, Mannheim, DE;
Michael Goebel, Mannheim, DE;
Ulrich Mueller, Neustadt, DE;
Mathias Feyen, Laudenbach, DE;
Yong Liu, Limburgerhof, DE;
BASF SE, Ludwigshafen, DE;
Abstract
The present invention relates to a process for preparing acrylic acid comprising (i) providing a stream comprising a formaldehyde source and acetic acid and (ii) contacting this stream with an aldol condensation catalyst comprising a zeolitic material, wherein the framework structure of the zeolitic material in (ii) includes Si and O, and has a molar Al:Si ratio of 0:1 to 0.001:1, and wherein the framework structure of the zeolitic material in (ii), in addition to Si and any Al, comprises one or more elements selected from the group consisting of tetravalent elements Y other than Si and trivalent elements X other than Al.