Tokuyama Corporation

Takenori Isomura

Kenji Fukuta

Hiroyuki Yanagi

Masayuki Kishino

Hiroyuki Oda

Hiroshi Inoue

Ryosuke Nishimoto

Daisuke Abiko

Provided is a method for producing a halogenated hydrocarbon magnesium compound, the method including bringing a halogenated hydrocarbon compound into contact with magnesium having a specific surface area of 1×10to 2×10m/g. Also provided are methods for producing a tertiary alcohol compound and an organosilicon compound, wherein said production method is utilized.

Method for producing halogenated hydrocarbon magnesium compound and methods for producing tertiary alcohol compound and organosilicon compound

Disclosed is a solid polymer electrolyte fuel cell membrane comprising an anion exchange membrane that contains a hydrocarbon-based anion exchange resin, wherein the water permeability at 25&#xb0; C. is 1400 g mhror greater, the anion exchange capacity is 0.2 to 5.0 mmol&#xb7;g, the percentage of water content at 25&#xb0; C. is 7% by weight or greater, and the thickness is 3 to 50 &#x3bc;m. It is especially preferable as a solid polymer electrolyte fuel cell membrane when said anion exchange membrane is an ion exchange membrane with a 5 to 15 &#x3bc;m-thick porous membrane substrate, wherein the voids in said porous membrane are filled with a hydrocarbon-based anion exchange resin.

Solid polymer electrolyte fuel cell membrane with anion exchange membrane

In the present invention is disclosed a method for producing a membrane for direct liquid fuel cell, which comprises polymerizing and curing a polymerizable composition containing at least

Separation membrane for direct liquid fuel cell and method for producing same

Disclosed is a process for producing a diaphragm for a fuel cell comprising a modified anion exchange membrane that substantially maintains durability and hydroxide ion conductivity as an electrolyte membrane and has improved resistance to methanol permeation. The process is characterized by comprising the step of impregnating at least one side of a crosslinked hydrocarbon anion exchange membrane with a polymerizable acidic compound having a weight average molecular weight of not less than 700 and less than 8000, provided that, when the acid site in the compound has been neutralized with a counter cation, the weight of the counter cation is subtracted from the molecular weight, and polymerizing the polymerizable acidic compound.

Separation membrane for fuel cell and production method thereof

The present invention discloses a membrane for direct-liquid fuel cell, comprised of a layered cation-exchange membrane whose one side is constituted by A) a cation-exchange membrane layer of low water content type having a water content of 1 to 15% by mass at a relative humidity of 50% RH (25&#xb0; C.) and whose other side is constituted by B) a cation-exchange membrane layer of high water content type having, at a relative humidity of 100% RH (25&#xb0; C.), a water content which is higher, by 3% by mass ore more, than the water content of the cation-exchange membrane layer of low water content type at a relative humidity of 100% RH (25&#xb0; C.), the layered cation-exchange membrane having an electrical resistance of 0.5 to 0.01 &#x3a9;&#xb7;cmin a 1 mol/L aqueous sulfuric acid solution at 25&#xb0; C.

Diaphragm for direct-liquid fuel cell and process for producing the same

There are disclosed a membrane for a fuel cell in which voids in a porous membrane are filled with a crosslinking type ion exchange resin having both cation-exchange group and anion-exchange group via a covalent bond, wherein the ion exchange resin has ion-exchange groups with either polarity more than ion-exchange groups with the opposite polarity and at least 40% of the ion-exchange groups of the opposite polarity form ion complexes with the ion-exchange groups of the major polarity, as well as a producing process therefor.

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Yamaguchi, Japan

Takenori Isomura