Asahi Glass Company, Limited

Makoto Noshiro

Kimihiko Sato

Yukio Jitsugiri

Manabu Suhara

Takeshi Abe

Yoshio Oda

Masaaki Yamabe

Shunichi Samejima

Keiichi Ohnishi

Shinsuke Morikawa

Nobuaki Kunii

Masashi Matsuo

Junjiro Iwamoto

Yasuo Sajima

Kiyotaka Arai

Keiichi Uchida

Makoto Nakao

Nobuyuki Yamagishi

Yasumichi Ito

Isao Gotoh

Masahiko Ichimura

Masaaki Ikemura

Shigeaki Yonemori

Tomio Yarita

A low reflectance transparent material having antisoiling properties, which comprises a transparent substrate and a multi-layer coating formed on the substrate, said coating comprising at least one thin layer of a condensation product containing a metal oxide, and a thin layer of a condensation product of a fluorine-containing silicon compound having a polyfluorinated carbon chain or a perfluorocarbon chain, formed thereon.

Low reflectance transparent material having antisoiling properties

SF.sub.6 is produced by a pyrolysis of SF.sub.5 Cl obtained by a reaction of sulfur or sulfur chloride with chlorine and an amine/hydrogen fluoride complex or a reaction of sulfur tetrafluoride with chlorine and an amine/hydrogen fluoride complex.

Process for producing SF.sub.6 through SF.sub.5 Cl

An alkali metal hydroxide is produced by electrolyzing an aqueous solution of an alkali metal chloride fed into an anode compartment in a cell having an anode compartment and a cathode compartment formed by partitioning with a cation exchange membrane. A cation exchange membrane of a fluorinated polymer having carboxylic acid groups at a content of 0.9 to 2.0 meq./g. dry resin is used as said cation exchange membrane and a metal or a metal ion is incorporated in said aqueous solution of an alkali metal chloride to form a thin layer made of a metal hydroxide or oxide on the surface of said membrane in the anode compartment.

Process for producing alkali metal hydroxide

An oxygen-containing cyclicfluoro compound selected from the group consisting of a perfluorolactone having the formula ##STR1## a perfluorocyclic ether having the formula ##STR2## and mixtures thereof is produced by reacting an .alpha.,.omega.-diiodoperfluoroalkane having the formula

Process for producing oxygen-containing cyclic fluoro compound

Ethylene-tetrafluorethylene copolymer compositions are stabilized against thermal degradation by incorporating therein a small amount of a copper compound.

Stabilized ethylene-tetrafluoroethylene copolymer composition

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Yokohama, Japan

Makoto Noshiro