Asahi Glass Company, Limited

Ajinomoto Co., Ltd.

Agency of Industrial Science and Technology

Yoshio Oda

Takeshi Morimoto

Kohji Suzuki

Hiroshi Otouma

Eiji Endoh

Keiichi Uchida

Manabu Suhara

Toshiya Matsubara

Shinsuke Morikawa

Kimihiko Sato

Masaaki Ikemura

Eiji Endo

Seisaku Kumai

Akihiro Yamazaki

Masaaki Yamabe

Tatsuro Asawa

Masashi Matsuo

Yasuo Sajima

Toshikatsu Hamano

Takao Hayashi

Yukio Jitsugiri

Makoto Noshiro

Isao Gotoh

Koji Miura

Hirokazu Morisawa

Shigeaki Yonemori

Shoziro Goto

Masao Kato

Katsuji Itoh

Takashi Hukushima

Tomio Yarita

An ion exchange membrane cell comprises an anode, a cathode, an anode compartment and a cathode compartment formed by partitioning by an ion exchange membrane. A gas and liquid permeable porous non-electrode layer is bonded at least one of surface of said ion exchange membrane. An ion exchange membrane comprises a gas and liquid permeable porous non-electrode layer which is bonded to at least one surface of said membrane. An aqueous solution of an alkali metal chloride is electrolyzed in an electrolytic cell comprising an anode, a cathode, an anode compartment and a cathode compartment formed by partitioning with an ion exchange membrane wherein a gas and liquid permeable porous non-electrode layer is bonded to at least one of surfaces of said ion exchange membrane and an aqueous solution of an alkali metal chloride is fed into said anode compartment to form chlorine on said anode and to form an alkali metal hydroxide in said cathode compartment.

Ion exchange membrane cell and electrolytic process using thereof

A diaphragm electrolysis of an aqueous solution of sodium chloride is carried out by using a fluorinated cation exchange membrane which is made of a polymer having carboxylic acid groups as ion-exchange group and has 2.0 to 3.5 mole/Faraday of water permeability under the electrolysis.

Electrolysis of aqueous solution of sodium chloride

A cation exchange membrane is installed to an electrolytic cell to be used in a form of a cation exchange membrane of a fluorinated polymer having ion exchange groups having the formula

Method of installation of membrane to electrolytic cell

An ion exchange membrane cell which comprises an anode, a cathode, and an anode compartment and a cathode compartment partitioned by an ion exchange membrane. The ion exchange membrane is a cation exchange membrane having a gas and liquid permeable porous non-electrode layer on at least one side thereof, and the cation exchange membrane is formed by a fluorinated polymer having sulfonic acid groups and ion exchange groups having weaker acidity than the sulfonic acid groups.

Ion exchange membrane cell and electrolysis with use thereof

An ion exchange membrane cell comprising an anode, cathode, and an anode compartment and a cathode compartment partitioned by an ion exchange membrane. The ion exchange membrane is a cation exchange membrane having a gas and liquid permeable porous non-electrode layer on at least one side thereof. The cation exchange membrane is composed of a fluorinated cation exchanger having carboxylic acid groups as its ion exchange groups and with its ion exchange capacity being varied in the direction of its thickness.

An aqueous solution of an alkali metal chloride is electrolyzed by feeding said aqueous solution of an alkali metal chloride into an anode compartment and feeding an oxygen-containing gas in a cathode compartment in an ion exchange membrane cell comprising said anode compartment and said cathode compartment formed by partitioning an anode and a cathode with an ion exchange membrane to which a gas and liquid permeable porous layer made of inorganic particles having no anodic activity and a thickness thinner than the thickness of said ion exchange membrane is bonded and said cathode is an oxygen-reducing cathode.

Process for electrolyzing aqueous solution of alkali metal chloride

A cation exchange membrane comprising a gas and liquid permeable porous non-electrode layer on at least one surface of said membrane and an electrolytic cell using thereof, wherein said porous layer is formed by many conductive or non-conductive particles or particle groups which are partially or wholly discontinuously bonded on said membrane.

Ion exchange membrane and electrolytic cell using thereof

A gas diffusion electrode material which comprises a continuously micro-porous electrically insulating material and at least partially graphitized carbon black powder uniformly incorporated in the insulating material.

Gas diffusion electrode material

A cathode having high durability and low hydrogen overvoltage comprising an electrode substrate and an alloy layer formed thereon, characterized in that said alloy layer is made of an alloy comprising Component X selected from the group consisting of nickel, cobalt and a mixture thereof, Component Y selected from the group consisting of aluminum, zinc, magnesium and silicon, and Component Z selected from the group consisting of a noble metal and rhenium, and having a composition of Components X, Y and Z falling within the range defined by the following points A, B, C and D with reference to the diagram of FIG. 1:

Cathode having high durability and low hydrogen overvoltage and process

An ion exchange membrane electrolytic cell comprises an anode, a cathode, an anode compartment and a cathode compartment partitioned by an ion exchange membrane. A gas and liquid permeable porous non-electrode layer composed of non-oxide ceramics particles is bonded to at least one side of the ion exchange membrane. With use of such a membrane, the cell voltage can considerably reduced in the electrolysis of water, an alkali metal halide, an alkali metal carbonate, etc.

Ion exchange membrane electrolytic cell

An electrolytic cell comprises an anode and a cathode which are partitioned by an ion exchange membrane having at least one roughened surface which contacts with or closes in a distance of up to 20 mm to a corresponding electrode.

A stainproofing agent containing as an active ingredient a polyfluoroalkyl group-containing compound represented by the following general formula and having a molecular weight of from 800 to 3000:

Stainproofing agent and process for its preparation

A cell for the electrolysis of water comprising an anode and a cathode wherein said anode comprises an electrode substrate and a coating layer formed on the substrate, said coating layer being made of an electrochemically active material comprising Component X selected from the group consisting of nickel, cobalt and mixture thereof, Component Y selected from the group consisting of aluminum, zinc, magnesium and silicon and Component Z selected from the group consisting of a noble metal and rhenium.

Anode for the electrolysis of water

A gas evolution cathode comprises a rough surface layer on a liquid non-permeable substrate and a fine electron non-conductive material which is discontinuously, uniformly distributed on said rough, surface layer.

Growing community of inventors

Yokohama, Japan

Yoshio Oda