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:
Feb. 10, 2004
Filed:
Oct. 18, 2002
Kouzou Noda, Settsu, JP;
Hirokazu Aoyama, Settsu, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
The present invention provides a process for producing a linear perfluoroalkanone or a perfluorocycloalkanone, which comprises using as a starting material a combination of the same or different kinds of compounds that are selected from perfluoroalkanoyl halides represented by the formula: F(CF ) COX wherein X is F, Cl, Br or I and n is an integer of 1 to 8, or a perfluoroalkanedioyl dihalide represented by the formula: XOC(CF ) COX wherein X is F, Cl, Br or I and n is an integer of 3 to 8, and reacting the starting material with a metal carbonate or metal carbonates. According to the present invention, perfluoroalkanones can be produced with a good yield from relatively easily available starting materials by a simple synthesis method.