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. 01, 2022
Filed:
Sep. 27, 2017
Applicant:
Evonik Operations Gmbh, Essen, DE;
Inventors:
Monika Berweiler, Maintal, DE;
Markus Göttlinger, Rodenbach, DE;
Meike Roos, Büdingen, DE;
Matthias Schwarz, Flieden, DE;
René Poss, Karlsruhe, DE;
Assignee:
Evonik Operations GmbH, Essen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 23/755 (2006.01); B01J 25/02 (2006.01); B01J 35/02 (2006.01); B01J 35/04 (2006.01); B01J 35/10 (2006.01); C07C 29/17 (2006.01); B01J 37/00 (2006.01); B01J 37/08 (2006.01); B01J 37/02 (2006.01); B01J 23/26 (2006.01); B01J 23/28 (2006.01); B01J 23/745 (2006.01); C07C 31/20 (2006.01);
U.S. Cl.
CPC ...
B01J 25/02 (2013.01); B01J 23/755 (2013.01); B01J 35/023 (2013.01); B01J 35/026 (2013.01); B01J 35/04 (2013.01); B01J 35/1076 (2013.01); B01J 37/0018 (2013.01); B01J 37/0063 (2013.01); C07C 29/172 (2013.01); B01J 23/26 (2013.01); B01J 23/28 (2013.01); B01J 23/745 (2013.01); B01J 37/0215 (2013.01); B01J 37/0217 (2013.01); B01J 37/0225 (2013.01); B01J 37/08 (2013.01); C07C 31/207 (2013.01);
Abstract
The present invention relates to a process for preparing 1,4-butanediol (BDO) by hydrogenating 2-butyne-1,4-diol (BYD) or 4-hydroxybutanal (4-HBA) in the presence of a catalyst of the Raney type having a porous foam structure, wherein the macroscopic pores have sizes in the range of 100 to 5000 μm, and a bulk density of up to 0.8 kg/L.