Honda Giken Kogyo Kabushiki Kaisha

Kuraray Co., Ltd.

Kuraray Chemical Co., Ltd.

Other

Honda Motor Co., Ltd.

Nozomu Sugo

Hideharu Iwasaki

Takeshi Fujino

Shushi Nishimura

Shigeki Oyama

Yoshifumi Egawa

Yuji Kawabuchi

Naoki Fujiwara

Minoru Noguchi

Hiroto Kobayashi

Mitsunori Hitomi

Hitoshi Tsuruta

Yoichi Matsumoto

Takahiro Takeshita

Byoungju Lee

Goki Uehara

Masato Takai

Takanori Kitamura

Kazuma Inoue

Shuhei Nakaji

Teruhiro Okada

Tomoki Kakiuchi

Takuya Tsujimoto

Takeshi Suehiro

Koji Sekiguchi

Hajime Aoki

Tsuyoshi Kowaka

Tatsuo Morotomi

Midori Okazaki

The present invention provides a polarized electrodecontaining mixed activated carbon composed of at least two activated carbons with different specific surface areas, and the specific surface area of the mixed activated carbon is not less than 900 m/g and less than 1900 m/g. By setting the specific surface area of the mixed activated carbon to less than 1900 m/g, the resistance reduction ratio of the polarized electroderapidly increases.

Polarized electrode and electric double-layer capacitor

A nonwoven fabric composed of ultra-fine continuous fibers having a mean fineness of not more than 0.5 dtex is prepared. The nonwoven fabric comprises a water-soluble thermoplastic resin in a proportion of not more than 5% by weight relative to the nonwoven fabric, has an absorbing height of not less than 30 mm as determined at 20&#xb0; C. after 10 minutes based on Byreck method when the nonwoven fabric immersion-treated for 60 minutes in a water of 80&#xb0; C. is used, and satisfies the following formula: (B)/(A)&#x2267;0.25, wherein the symbol (B) represents a tensile strength [N/5 cm] in the longitudinal direction and the lateral direction of the nonwoven fabric and the symbol (A) represents a fabric weight [g/m] of the nonwoven fabric. In the nonwoven fabric, not less than 30% of the surface may be coated with the water-soluble thermoplastic resin. The water-soluble thermoplastic resin may be a water-soluble thermoplastic polyvinyl alcohol, e.g., a modified polyvinyl alcohol containing an ethylene unit in a proportion of 3 to 20 mol %. The present invention provides a nonwoven fabric composed of ultra-fine continuous fibers, having a high flexibility or softness, and having a high mechanical strength even when the fiber diameter is small, and having an excellent water absorbency, as well as a production process and an application thereof.

Nonwoven fabric composed of ultra-fine continuous fibers, and production process and application thereof

In activated carbon obtained by subjecting a carbonaceous material to an activation treatment, the overall content of alkali metals is set at 100 ppm or less, or the overall content of heavy metals is set at 20 ppm or less and the overall content of alkali metals is set at 200 ppm or less. In cases where such activated carbon is used as a raw material in electronic devices, the formation of dendrites by the reductive deposition of alkali metals or heavy metals tends not to occur, so that problems such as short-circuiting or the like tend not to arise, and a good rate of self-discharge retention is shown.

Activated carbon, method for production thereof, polarizing electrode and electrical double layer capacitor

Activated carbon useful as polarizable electrode material for an electric double-layer capacitor can be obtained by mixing a carbonaceous material and an alkali metal hydroxide while maintaining a solid state, granulating the obtained mixture while maintaining its solid state, dehydrating the obtained granulated substance while maintaining its solid state, and subjecting the granulated dehydration product obtained in the dehydration step to an activation treatment. The preferred pressure of the granulation treatment in the granulation step is 0.01 to 300 Torr, and the preferred temperature of the granulation treatment is 90 to 140&#xb0; C. The preferred pressure of the dehydration treatment in the dehydration step is 0.01 to 10 Torr, and the preferred temperature of the dehydration treatment is 200 to 400&#xb0; C.

Method for manufacturing activated carbon, polarizable electrode, and electric double-layered capacitor

Activated carbon and method for producing it

A hollow fiber membrane made of an ethylene-vinyl alcohol polymer, comprises a dense layer existing in the inner surface and a porous layer existing in the layer other than the dense layer, wherein the hollow fiber membrane has a porosity of 60 to 90%, an overall mass transfer coefficient for myoglobin in a water-based system of not less than 0.003 cm/min., and a rejection rate for albumin in a bovine blood system of not less than 97%. The EVA hollow fiber membrane is useful for hemopurification membranes such as hemodialysis membranes, hemodiafiltration membranes, hemofiltration membranes and continuous hemofiltration membranes, and a process for producing the same.

Hollow fiber membrane made of an ethylene-vinyl alcohol polymer

Growing community of inventors

Okayama, Japan

Nozomu Sugo