Birch, Stewart, Kolasch & Birch, LLP
Processes for the preparation of perfluoroalkanes and iodine pentafluoride
 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.sub.2).sub.n -- 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. 
Daikin Industries Ltd.
C C
C01B C07C
inventional inventional
Tatsuya Tatsuya Kyohiro Hirokazu
Otsuka Hirata Kan Aoyama