Mitsubishi Chemical Corporation

Mitsubishi Kasei Corporation

Mitsubishi Jukogyo Kabushiki Kaisha

Nissin Kogyo Co., Ltd.

Mitsubishi Genshiryoku Kogyo Kabushiki Kaisha

Kohei Okuyama

Mitsuo Suzuki

Kazuo Niwa

Kazushi Matsuura

Satoshi Hirahara

Hitoshi Seki

Toshihiro Fukagawa

Mashiro Yanagisawa

Tatsuyoshi Sakurai

Ichiro Haneda

Kimihiro Ioki

Hiroyuki Aikyo

Yoshio Yoshino

Yoshitaka Takeda

Takanori Takahashi

A carbon black having a ratio of a maximum absorbance in a range of 1800 to 1670 cm.sup.-1 to a maximum absorbance in a range of 1670 to 1500 cm.sup.-1 of not less than 0.65 on condition that a straight line interconnecting the absorbances at 1805 cm.sup.-1 and 900 cm.sup.-1 is taken as a base line in an absorbance chart of infrared absorption spectrum.

Carbon black

Electric double-layer capacitor are disclosed having a non-aqueous solvent electrolyte; and a pair of polarized electrodes as positive and negative electrodes. These polarized electrodes have a rest potential nearly central between a substantial decomposition initiation voltage of the electrolyte on an oxidation or high-potential side and a substantial decomposition initiation voltage of the electrolyte on a reduction or low-potential side.

Electric double-layer capacitor

Active carbon of which the pore size distribution as measured by a Cranston-Inkley method has a peak within each of ranges of from 10 to 20 .ANG. and from 20 to 100 .ANG..

Active carbon and process for its production

The present invention relates to an activated carbon comprising an activated carbon particle and titanium dioxide fine particles present at least on the surface thereof, which activated carbon contains substantially no carbon precursor on the surface thereof and has the lightness L value thereof of not more than 50.

Activated carbon and process for producing the same

An activated carbon has a specific surface area of pores with a pore diameter of not less than 20 .ANG. in the pore distribution determined from the nitrogen adsorption isotherm of not less than 1,000 m.sup.2 /g, and the ratio of the specific surface area of the pores with a pore diameter of not less than 20 .ANG. to the specific surface area of the whole pores of not less than 0.45.

Activated carbon, process for the preparation thereof and electric

A carbon fiber-reinforced carbon composite material, wherein carbon fibers are oriented substantially in the thickness direction, the ratio of the thermal conductivity in the thickness direction to the thermal conductivity in a direction perpendicular to the thickness direction is at least 2, and the thermal conductivity in the thickness direction is at least 3 W/cm..degree. C.

Carbon fiber-reinforced carbon composite materials, processes for their

A disc brake for a vehicle comprising a disc and pads, the disc being rotatable integrally with wheels and the pads capable of being brought into friction engagement with the disc. The disc comprises a baked carbon fiber reinforced carbon composite comprising dispersed bundles of short carbon fibers impregnated with a reinforcing material of primarily a pitch. The pads comprise a baked carbon fiber reinforced carbon composite comprising dispersed bundles of short carbon fibers impregnated with a reinforcing material of primarily a pyrolytic carbon and a thermosetting resin.

Pitch-reinforced carbon fiber brake disc and pyrolytic

The present invention discloses a disc brake for a vehicle having a disc which is rotatable integrally with the wheels and pads which are brought into friction engagement with the disc. The disc is prepared by impregnating a reinforcing material into a carbon fiber reinforced carbon composite obtained by dispersing bundles of multiple single short carbon fibers with primarily a pitch, a combination of a pyrolytic carbon and a pitch or a combination of a pyrolytic carbon and a thermosetting resin, followed by baking; whereas the pads are prepared by impregnating a reinforcing material into a carbon fiber reinforced carbon composite obtained by dispersing bundles of multiple single short carbon fibers with primarily a combination of a pyrolytic carbon and a thermosetting resin or a combination of a pitch and a thermosetting resin, followed by baking.

Brake friction composite with reinforcing pyrolytic carbon and

A carbon fiber-reinforced carbon composite material, wherein carbon fibers are oriented substantially in the thickness direction, the ratio of the thermal conductivity in the thickness direction to the thermal conductivity in a direction perpendicular to the thickness direction is at least 2, and the thermal conductivity in the thickness direction is at least 3 W/cm.multidot..degree.C.

Carbon fiber-reinforced carbon composite materials processes for their

A carbon fiber-reinforced carbon composite material having a porosity of not higher than 20% prepared by subjecting a carbon fiber-reinforced carbon composite material having a porosity of from 25 to 95% to densification treatment, wherein the densification treatment is conducted with pyrolytic carbon formed by the pyrolysis of a halogenated hydrocarbon-containing gas at a temperature of from 400.degree. to 800.degree. C.

Growing community of inventors

Yokohama, Japan

Kohei Okuyama