Kuraray Co., Ltd.

Kureha Corporation

Kuraray Chemical Co., Ltd.

Eisai R&d Management Co., Ltd.

Daiichi Pharmaceutical Co., Ltd.

Daiichi Sankyo Company, Limited

Kenichi Koyakumaru

Hideharu Iwasaki

Naohiro Sonobe

Yasuhiro Tada

Hajime Komatsu

Jiro Masuko

Kiyoto Otsuka

Junichi Arima

Kenta Aoki

Makoto Imaji

Yoshimi Fukunaga

Shinya Tago

Akimi Ogawa

Naoshi Nakagawa

Katsuji Ujita

Taketoshi Okuno

Tatsuhiko Hayashibara

Toshifumi Akiba

Tatsuru Saito

Mayu Komatsu

Yasushi Ebihara

Youichi Satake

Shingo Ueyama

Akira Koshima

Junsang Cho

The object of the present invention is to provide a carbonaceous material which is obtainable from plant-derived char and has a decreased specific surface area. Further, the object of the present invention is to provide a non-aqueous electrolyte secondary battery having excellent dedoping capacity, non-dedoping capacity, and charge-discharge efficiency. The object can be solved by a carbonaceous material for non-aqueous electrolyte secondary batteries characterized in that the carbonaceous material is obtained by heat-treating plant-derived char which is demineralized in gas-phase, and carbon precursor or volatile organic compound under a non-oxidizing gas atmosphere; and a specific surface area determined by a BET method is 10 m/g or less.

Carbon material for nonaqueous electrolyte secondary battery and method for manufacturing same, and negative electrode using carbon material and nonaqueous electrolyte secondary battery

Provided is a less hygroscopic carbonaceous material that is obtained from a plant-derived carbonaceous raw material and that, when used as a negative electrode material for a nonaqueous electrolyte secondary battery, allows the battery to exhibit good battery characteristics. Provided is a carbonaceous material for negative electrodes of nonaqueous electrolyte secondary batteries. This carbonaceous material is a particulate carbonaceous material containing carbonaceous particles. The carbonaceous material has a BET specific surface area of 1 m/g or more and less than 20 m/g. Each of the carbonaceous particles of the carbonaceous material has a core and a skin covering the core. The core contains a calcined product of a plant-derived carbonaceous raw material. The skin is made of a material that has higher electron emission ability upon irradiation with an electron beam than a material of the core.

Carbonaceous material for negative electrodes of nonaqueous electrolyte secondary batteries

The object of the present invention is to provide a manufacturing method of carbonaceous material for a negative electrode of lithium ion capacitors, wherein the carbonaceous material is obtained from plant-derived char as a source, potassium and iron are sufficiently removed, and an average particle diameter thereof is small; and a carbonaceous material for a negative electrode of lithium ion capacitors. The object can be solved by a method for manufacturing a carbonaceous material having an average diameter of 3 to 30 &#x3bc;m, for a negative electrode of lithium ion capacitors comprising the steps of: (1) heating plant-derived char having an average particle diameter of 100 to 10000 &#x3bc;m at 500&#xb0; C. to 1250&#xb0; C. under an inert gas atmosphere containing a halogen compound to demineralize in a gas-phase, (2) pulverizing a carbon precursor obtained by the demineralization in a gas-phase, (3) calcining the pulverized carbon precursor at less than 1100&#xb0; C. under a non-oxidizing gas atmosphere.

Carbonaceous material for negative electrodes of lithium ion capacitors and method for producing same

Provided is a manufacturing method of carbonaceous material for a negative electrode of non-aqueous electrolyte secondary batteries, wherein the carbonaceous material is obtained from plant-derived char as a source, potassium is sufficiently removed, and an average particle diameter thereof is small; and a carbonaceous material for a negative electrode of non-aqueous electrolyte secondary batteries. The method for manufacturing a carbonaceous material having an average particle diameter of 3 to 30 &#x3bc;m, for a negative electrode of non-aqueous electrolyte secondary batteries includes the steps of: (1) heating plant-derived char having an average particle diameter of 100 to 10000 &#x3bc;m at 500&#xb0; C. to 1250&#xb0; C. under an inert gas atmosphere containing halogen compound to demineralize in a gas-phase, (2) pulverizing a carbon precursor obtained by demineralization in a gas-phase, (3) calcining the pulverized carbon precursor at 1000&#xb0; C. to 1600&#xb0; C. under an non-oxidizing gas atmosphere.

Carbonaceous material for negative electrodes of nonaqueous electrolyte secondary batteries and method for producing same

The present invention provides a method of producing a pyridine derivative having a substituent at the 2-position of a heterocyclic structure conveniently and with fine selectivity. The present invention relates to a production method of a pyridine derivative having a substituent at the 2-position of a heterocyclic structure, which is represented by the formula (III), which includes reacting a 2-sulfonylpyridine derivative of the formula (I) with an organometallic compound of the formula (II) and the like, and the like: wherein each symbol is as defined in the Description.

Process for producing 2-substituted pyridine derivative

The present invention provides a method of industrially and advantageously producing a 5-(2'-pyridyl)-2-pyridone derivative. The present invention relates to a production method of a 5-(2&#x2032;-pyridyl)-2-pyridone derivative represented by the formula (VI), which includes reacting a pyridine derivative of the formula (I) with a brominating agent to give a 5-bromopyridine derivative of the formula (II), reacting the obtained 5-bromopyridine derivative with a metallizing agent to give an organometallic compound of the formula (III), reacting the obtained organometallic compound with a 2-sulfonylpyridine derivative of the formula (IV) to give a 6-alkoxy-3,2&#x2032;-bipyridine derivative of the formula (V) and hydrolyzing the obtained 6-alkoxy-3,2&#x2032;-bipyridine derivative: wherein each symbol is as defined in the Description.

Process for producing 5-(2'-pyridyl)-2-pyridone derivative

A method of industrially advantageously producing a cyclopropane monoacetal derivative represented by the formula (III) conveniently and also in a fewer steps by reacting a halogenated unsaturated carbonyl compound represented by the formula (II) with an alcoholate. wherein each symbol is as defined in the specification.

Process for producing cyclopropane monoacetal derivative and intermediate therefor

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Bizen, Japan

Kenichi Koyakumaru