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:
Jun. 28, 2022
Filed:
Jan. 31, 2018
Applicant:
Evonik Operations Gmbh, Essen, DE;
Inventors:
Assignee:
Evonik Operations GmbH, Essen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D 201/04 (2006.01); C07C 45/48 (2006.01); C07C 49/413 (2006.01); C07C 49/307 (2006.01); C07D 201/10 (2006.01);
U.S. Cl.
CPC ...
C07D 201/10 (2013.01); C07C 49/307 (2013.01);
Abstract
The invention relates to a method for producing cyclododecanone (CDON). During the production, contaminated cyclododecane (CDAN) is produced. This can be separated from CDON by distillation (CDAN-containing fraction). The separation of CDAN and impurities such as 13-oxabicyclo [7.3.1]tridecane occurs by crystallizing out CDAN from the CDAN-containing fraction.