Showa Denko K.k.

Teijin Limited

Showa Denko Kabushiki Kaisha

Kanegafuchi Kagaku Kogyo Kabushiki Kaisha

Nishimura, Kunio

Nakayama, Takehisa

Tsuge, Kazunori

Tawada, Yoshihisa

Kunio Nishimura

Toshio Morita

Hideo Nakagawa

Shiro Kumakawa

Yutaka Suhara

Hitoshi Inoue

Hitoshi Iijima

Motoo Yumura

Nobuo Takahashi

Satoshi Ohshima

Yoshihisa Tawada

Morinobu Endo

Koro Shirane

Kazunori Tsuge

Tadashi Hirakawa

Akinori Sudo

Yoshihisa Sakamoto

Mahito Murakami

Nobuhiro Matsumoto

Koji Sato

Hideo Yamagishi

Chiaki Sotowa

Masataka Kondo

Minori Yamaguchi

Akinori Sudoh

Mitsuo Matsumoto

Takehisa Nakayama

Akihiko Hiroe

Shigeaki Sato

Kiyoshi Maruo

Masayuki Kiuchi

Keizou Asaoka

Masayuki Takahashi

Masahiro Nakao

A fine carbon fiber having an outer diameter of about 1 to about 80 nm and an aspect ratio of 10 to 30,000, comprising a hollow center portion and a multi-layer sheath structure of a plurality of carbon layers, the layers forming annual rings, wherein the sheath-forming carbon layers form an incomplete sheath, i.e., the carbon layers are partially broken or disrupted in a longitudinal direction, and the outer diameter of the carbon fiber and/or the diameter of the hollow center portion are not uniform in a longitudinal direction. The carbon fiber is obtained by instantaneously reacting a carrier gas at a high temperature and an organic compound gas kept at a temperature below the decomposition temperature of the transition metal compound and has a conductivity equivalent to that of a conventional vapor phase method and is useful as a filler material in resins, rubbers, paints and the like.

Fine carbon fiber, method for producing the same and electrically conducting material comprising the fine carbon fiber

The present invention relates to graphite powder and to a battery using it as a negative electrode material, the powder having a specific surface area of not more than 3 m/g, an aspect ratio of not more than 6, and a tapping bulk density of not less than 0.8 g/cm; or a tapping bulk density of not less than 0.8 g/cmand an oxidation initiation temperature of not less than 600&#xb0; C.; or a specific surface area of not more than 3 m/g and a tapping bulk density of not less than 0.8 g/cm, a specific electrical resistance of the powder not more than 0.06 &#x3a9;cm in the specified condition. The battery obtained thus has a large discharge capacity, good cycle property and high charge and discharge efficiency.

Carbonaceous material for cell and cell containing the carbonaceous material

Fine carbon fibers having a fiber diameter of 1 &#x3bc;m or less, an interlayer distance dbetween carbon layers as determined by an X-ray diffraction method of 0.335 to 0.342 nm or less and satisfying d&#x3c;0.3448-0.0028 (log &#x3c6;) where &#x3c6; stands for the diameter of the carbon fibers, and a thickness Lc of the crystal in the C axis direction of 40 nm or less. Fine carbon fibers containing boron in crystals of the fiber. The fine carbon fibers can be produced by using vapor-grown fine carbon fibers as a raw material, adding a boron or a boron compound to the material; pressing the mixture to regulate the bulk density to preferably 0.05 g/cmor more; and heating at a temperature of 2000&#xb0; C. or higher.

Carbon fibers, production process therefor and electrode for batteries

A method for producing carbon fiber including the following processes: a process for obtaining fine carbon fiber by thermally decomposing an organic compound in a furnace by use of a catalyst; a process for separating a reaction exhaust gas contained in the carbon fiber; a process for continuously subjecting the carbon fiber to thermal treatment in a non-oxidative atmosphere; and a process for incinerating a thermal treatment exhaust gas generated in the thermal treatment and/or the reaction exhaust gas. The method for separating a reaction exhaust gas from carbon fiber is characterized in that a packed carbon fiber layer is formed, an inert gas is caused to flow through the layer, and the layer is compressed. Combustion of the reaction exhaust gas and combustion of the exhaust gas generated from the subsequent thermal treatment is achieved through employment of a pilot burner holding flame at all times in a vertical incinerator.

Method for separating and treating exhaust gas of carbon fiber

A battery electrode material composed of a composite material including fiber agglomerates having micro-pores and an electrode active material included within the micro-pores of the fiber agglomerates. The agglomerates are formed by tangled masses of vapor-grown carbon fibers having fiber contact points. Furthermore, at least a portion of the fiber contact points are chemically bonded fiber contact points. Also disclosed is a secondary battery including electrodes made from the battery electrode material.

Carbon fiber material and electrode materials for batteries

Fine carbon fibers having a fiber diameter of 1 &mgr;m or less, an interlayer distance d between carbon layers as determined by an X-ray diffraction method of 0.335 to 0.342 nm or less and satisfying d <0.3448&minus;0.0028 (log &phgr;) where &phgr; stands for the diameter of the carbon fibers, and a thickness Lc of the crystal in the C axis direction of 40 nm or less. Fine carbon fibers containing boron in crystals of the fiber. The fine carbon fibers can be produced by using vapor-grown fine carbon fibers as a raw material, adding a boron or a boron compound to the material; pressing the mixture to regulate the bulk density to preferably 0.05 g/cm or more; and heating at a temperature of 2000&deg; C. or higher.

Carbon fiber, method for producing the same and electrode for cell

A carbon fiber material is substantially constituted by fiber agglomerates, having agglomerate sizes in a range of not less than 5 .mu.m and not more than 500 .mu.m, formed by vapor grown carbon fibers having a diameter of not less than 0.05 .mu.m and not more than 5 .mu.m, having a microstructure such that some fiber contact points are bonded together with substances produced by carbonizing carbonaceous matters. This carbon fiber material is used as a filler material to various matrices, and used also as an electrode material for making electrodes in batteries, especially in electric double-layer capacitors, and in secondary batteries, especially those based on lithium or lead.

Carbon fiber material and electrode materials and method of manufacture

Disclosed is the feed or feed additive granular agent containing a phisiologically active substance and a coating layer having a laminar structure in which the tabular crystals are arranged in a laminated state. The coating layer comprises (a) one or more substances selected from the group consisting of a specific fatty acid or ester thereof, a specific animal or vegetable fat and fatty oil which may be hardened by hydrogenation, and a specific wax, and (b) tabular crystals of a substance which is sparingly water-soluble under a neutral condition but is readily water-soluble under an acidic condition and which has an average particle size of 5 to 30 .mu.m, wherein said coating layer is present in a coating ratio of 5% by weight or more and 50% by weight or less, wherein said first coating material and said second coating material are in a proportion of 3:2 to 1:3 by weight, and process for producing the same. The granular agent has a high mechanical strength, increased durability in the rumen and superiority in solubility and absorption of the physiologically active substance of said agent in the abomasum or downstream thereof resulting in efficient breeding, growth, or lactation of ruminants.

Granular agent for ruminants and process for producing the same

Disclosed is the feed or feed additive granular agent containing a physiologically active substance and a coating layer having a laminar structure in which the tabular crystals are arranged in a laminated state. The coating layer comprises (a) one or more substances selected from the group consisting of a specific fatty acid or ester thereof, a specific animal or vegetable fat and fatty oil which may be hardened by hydrogenation, and a specific wax, and (b) tabular crystals of a substance which is sparingly water-soluble under a neutral condition but is readily water-soluble under an acidic condition and which has an average particle size of 5 to 30 .mu.m, wherein said coating layer is present in a coating ratio of 5% by weight or more and 50% by weight or less, wherein said first coating material and said second coating material are in a proportion of 3:2 to 1:3 by weight, and process for producing the same. The granular agent has a high mechanical strength, increased durability in the rumen and superiority in solubility and absorption of the physiologically active substance of said agent in the abomasum or downstream thereof resulting in efficient breeding, growth, or lactation of ruminants.

An air bag having reinforcing belts and exhibiting a high burst strength and excellent safety, comprises a circular top cloth, a circular bottom cloth seam-joined to the top cloth and having an inflator-joining circular hole located in the center portion thereof, top and bottom reinforcing cloths seam-joined to center portions of the top and bottom cloths and a plurality of reinforcing belts located on inside faces of the top and bottom cloths, in which the air bag and end portion of each reinforcing belt is connected to the top reinforcing cloth or a top belt catcher seam-joined to the top cloth, the opposite end portion of the reinforcing belt is connected to the bottom reinforcing cloth or a bottom belt catcher seam-joined to the bottom cloth and each of the top and bottom cloths is seam-joined to a corresponding reinforcing cloth and optionally a corresponding belt catcher by a plurality of concentrically closed seam lines which satisfies a particular relationship.

Air bag provided with reinforcing belts

Disclosed is the feed or feed additive granular agent containing a physiologically active substance and a coating layer having a laminar structure in which the tabular crystals are arranged in a laminated state. The coating layer comprises (a) one or more substances selected from the group consisting of a specific fatty acid or ester thereof, a specific animal or vegetable fat and fatty oil which may be hardened by hydrogenation, and a specific wax, and (b) tabular crystals of a substance which is sparingly water-soluble under a neutral condition but is readily water-soluble under an acidic condition and which has an average particle size of 5 to 30 .mu.m, wherein said coating layer is present in a coating ratio of 5% by weight or more and 50% by weight or less, wherein said first coating material and said second coating material are in a proportion of 3:2 to 1:3 by weight, and process for producing the same. The granular agent has a high mechanical strength, increased durability in the rumen and superiority in solubility and absorption of the phisiologically active substance of said agent in the abomasum or downstream thereof resulting in efficient breeding, growth, or lactation of ruminants.

Woven fabric for high performance air bags and process for producing same

Growing community of inventors

Kanagawa, Japan

Kunio Nishimura