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:
Nov. 29, 2005
Filed:
Jun. 17, 2004
Takashi Okazoe, Kanagawa, JP;
Kunio Watanabe, Kanagawa, JP;
Masahiro Ito, Kanagawa, JP;
Daisuke Shirakawa, Kanagawa, JP;
Shin Tatematsu, Kanagawa, JP;
Hirokazu Takagi, Kanagawa, JP;
Takashi Okazoe, Kanagawa, JP;
Kunio Watanabe, Kanagawa, JP;
Masahiro Ito, Kanagawa, JP;
Daisuke Shirakawa, Kanagawa, JP;
Shin Tatematsu, Kanagawa, JP;
Hirokazu Takagi, Kanagawa, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
The present invention provides a process whereby fluorinated ketones of various structures can be produced by short process steps and which is useful as an industrial production process. Namely, it is a process for producing a fluorinated ketone of the following formula (5), which comprises reacting a compound of the following formula (3) having a fluorine content of at least 30 mass %, with fluorine in a liquid phase to obtain a compound of the following formula (4), and then, subjecting the ester linkage of the compound of the formula (4) to a dissociation reaction:RCOOCHRR  (3)RCOOCFRR  (4)RRC═O  (5)wherein each of Rand Rare each a monovalent organic group such as an alkyl group, or Rand Rmay be bonded to each other to form a bivalent organic group such as an alkylene group, Rand Rare a monovalent organic group such as a perfluoroalkyl group formed by fluorination of Rand R, or they are bonded to each other to form a bivalent organic group such as a perfluoroalkylene group, and Rand Rare each a monovalent organic group such as a perfluoroalkyl group which may contain an etheric oxygen atom.