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. 15, 2005
Filed:
May. 01, 2003
Kenji Adachi, Tsukuba, JP;
Ginjiro Tomizawa, Tsukuba, JP;
Satoshi Oishi, Tsukuba, JP;
Daikin Industries Ltd., Osaka, JP;
Abstract
To provide a practical method of manufacturing fluorine compounds in a small number of steps that can carry out fluorination reaction of substrates using easily available fluorinating agents that can be inexpensively produced industrially, and recover precursors of the fluorinating agents generated accompanying the reaction quantitatively in an easy operation, and a method of recovery and regeneration of the precursors of the fluorinating agents. N-Fluoro-quaternary-nitrogen-onium tetrafluoroborate salts represented by the general formula (1) as the fluorinating agents are used.N-Hydro-quaternary-nitrogen-onium tetrafluoroborate salts represented by the general formula (2) generated accompanying the reaction are separated and recovered from the reaction mixture by means of depositing as crystals by the addition of solvents with a low affinity to the salts to the reaction mixture after the reaction.