Tokuyama Soda Kabushiki Kaisha

Yasuo Murata

Toshikatsu Sata

Masakatsu Nishimura

Naoya Okada

Shoji Murakami

Yasuhiko Hirai

Disclosed is a process for the preparation of a perfluoroorganic compound, which comprises fluorinating a partially fluorinated or unfluorinated organic compound having carbon-to-fluorine bonds under mild conditions and then, contacting the resulting reaction mixture with a fluorine gas at a temperature of 110.degree. to 180.degree. C.

Process for preparation of perfluoro organic compounds

Disclosed is a process for the preparation of a perfluoro organic compound, which comprises fluorinating a partially fluorinated or unfluorinated organic compound having carbon-to-fluorine bonds under mild conditions and then, contacting the resulting reaction mixture with a fluorine gas at a temperature of 110.degree. to 180.degree. C.

An electrolytic diaphragm consisting essentially of a main layer composed of a polymeric membranous material uniformly containing cation exchange groups and fluorine atoms chemically bonded thereto and a secondary layer having a smaller thickness than said main layer and composed of at least one of an electrically neutral layer and a layer containing an anion exchange group, said secondary layer being in intimate contact with said main layer at at least one surface layer portion or interior of said main layer. A method for electrolyzing alkali salts, using aforesaid electrolytic diaphragm.

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Kudamatsu, Japan

Yasuo Murata