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:
May. 29, 2001
Filed:
Aug. 23, 1999
Tatsuya Otsuka, Osaka, JP;
Tatsuya Hirata, Osaka, JP;
Kyohiro Kan, Osaka, JP;
Hirokazu Aoyama, Osaka, JP;
Daikin Industries Ltd., Osaka, JP;
Abstract
The present invention provides a new industrial process for producing perfluoroalkanes in order to overcome the problems of processes for producing perfluoroalkanes in the prior art. The process of the present invention is a process for producing a perfluoroalkane corresponding to a general formula Rf-F (wherein Rf- is a perfluoroalkyl group represented by F(CF,),— and n is an integer of 2 to 10) by contacting a perfluoroalkyl iodide with gaseous fluorine to cause a reaction therebetween, wherein the contact is made in the presence of the liquid compound which is at least one liquid which is substantially inert to the perfluoroalkyl iodide and gaseous fluorine under the condition of the process and which is selected from a perfluoro-compound, a chlorofluoro-compound, and hydrogen fluoride.