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:
Aug. 22, 2023
Filed:
Apr. 23, 2021
Evonik Operations Gmbh, Essen, DE;
Katharina Minke, Essen, DE;
Holger Graskamp, Marl, DE;
Evonik Operations GmbH, Essen, DE;
Abstract
An improved process can be used for preparing triacetonamine. The process involves performing an absorption step in which acetone present in the crude product is removed from triacetonamine by distillation, and in gaseous form is then absorbed in countercurrent into fresh, liquid acetone. The acetone stream thus obtained is then converted further to triacetonamine. This process enables more energy-efficient reutilization of the unreacted reactants used in the synthesis of triacetonamine, and thus lowers overall both the use of reactants and the energy expenditure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile