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:
Jul. 14, 2020
Filed:
Jun. 01, 2018
Applicant:
Zeon Corporation, Chiyoda-ku, Tokyo, JP;
Inventor:
Tatsuya Sugimoto, Tokyo, JP;
Assignee:
ZEON CORPORATION, Chiyoda-ku, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 17/20 (2006.01); C07C 23/08 (2006.01);
U.S. Cl.
CPC ...
C07C 17/204 (2013.01); C07C 17/20 (2013.01); C07C 23/08 (2013.01);
Abstract
Provided is a manufacturing method in which 1-chloroheptafluorocyclopentene is brought into contact with an alkali metal fluoride to obtain octafluorocyclopentene. The manufacturing method includes a fluorination step of maintaining, at 85° C. or higher, a suspension containing an alkali metal fluoride suspended in a mixed solvent including a polar aprotic solvent and a glycol ether having a higher boiling point than the polar aprotic solvent while supplying 1-chloroheptafluoropentene into the suspension and performing fluorination thereof to obtain octafluorocyclopentene.