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:
Dec. 02, 2025
Filed:
Nov. 08, 2021
Applicant:
Evonik Operations Gmbh, Essen, DE;
Inventors:
Sebastian Bestgen, Eschborn, DE;
Günther Gräff, Bensheim, DE;
Maik Caspari, Alsbach-Haehnlein, DE;
Thorben Schütz, Alsbach-Haehnlein, DE;
Harald Trauthwein, Aschaffenburg, DE;
Assignee:
Evonik Operations GmbH, Essen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 253/34 (2006.01); C07C 253/16 (2006.01); C07C 255/12 (2006.01);
U.S. Cl.
CPC ...
C07C 253/34 (2013.01); C07C 253/16 (2013.01); C07C 255/12 (2013.01);
Abstract
A process for purifying ethylene cyanohydrin involves incubating an industrial grade ethylene cyanohydrin product with at least one titanium(IV)alkoxide. Ethylene cyanohydrin products with purities of >99% contain less than 0.05% of ethylene glycol (EG), and/or contain a water content of less than 1000 ppm.