Showa Denko K.k.

Mitsubishi Corporation

Resonac Corporation

Masumi Kuritani

Yu Gao

Kunio Kondo

Takeshi Igarashi

Ryuji Monden

Tomoyuki Takei

Tsuyoshi Kato

Katsumi Murofushi

Naoya Fukumoto

Daisuke Yagyu

Masaki Nanko

Hiroyuki Tomita

Hiroshi Uchida

Yuta Yamaguchi

Jun Dou

Shoichiro Wakabayashi

Takahiko Ono

By sequentially performing: a step (I) of dissolving fullerene Cin a polyalkylene glycol to prepare a fullerene solution; a step (II) of immersing a material carbon fiber in the fullerene solution; and a step (III) of extracting the carbon fiber from the fullerene solution, washing the extracted carbon fiber with water, and drying the carbon fiber washed with water, a carbon fiber on which fullerene Cadsorbs is obtained.

Carbon fiber and method of manufacturing same

By sequentially performing: a step (I) of dissolving fullerene Cin an organic solvent to prepare a fullerene solution; a step (II) of immersing a material carbon fiber in the fullerene solution; and a step (III) of extracting the carbon fiber from the fullerene solution and drying the extracted carbon fiber, a carbon fiber on which fullerene Cadsorbs is obtained.

A carbon fiber is obtained by sequentially performing: a step (I) of dissolving a fullerene mixture including fullerenes Cand Cin an organic solvent to prepare a fullerene solution; a step (II) of immersing a material carbon fiber in the fullerene solution; and a step (III) of extracting the carbon fiber from the fullerene solution and drying the extracted carbon fiber.

A method for producing a lubricating oil composition includes: a step of mixing a base oil and fullerene, dissolving a soluble component of the fullerene in the base oil, and obtaining a mixture of the base oil and fullerene; a step of removing an insoluble component included in the mixture and obtaining a fullerene solution; and a step of heat-treating the fullerene solution.

Lubricating oil composition and method for producing same

A fluorine-containing ether compound represented by R&#x2014;R&#x2014;CH&#x2014;R&#x2014;CH&#x2014;R&#x2014;Ris provided. (Ris a perfluoropolyether chain; Rand Rare each independently any one of an alkyl group that may have a substituent, an organic group having at least one double bond or at least one triple bond, and a hydrogen atom; and &#x2014;R&#x2014;CH&#x2014;Ris represented by Formula (2), and R&#x2014;CH&#x2014;R&#x2014; is represented by Formula (3))-[A]-[B]&#x2014;O&#x2014;CH&#x2014;R&#x2003;&#x2003;(2)R&#x2014;CH&#x2014;O&#x2014;[C]-[D]-&#x2003;&#x2003;(3)([A] is represented by Formula (4), [B] is represented by Formula (5), [C] is represented by Formula (6), [D] is represented by Formula (7), and in the formula, a and b are integers of 0 to 2, c is an integer of 2 to 5, d and f are integers of 0 to 2, and e is an integer of 2 to 5, and at least one of b and d in the formula is 1 or more) 

Fluorine-containing ether compound, lubricant for magnetic recording media, and magnetic recording medium

A method for inspecting a lubricant oil composition containing a base oil and a fullerene, the method including: measuring at least one of a lamellar length of the lubricating oil composition and a most abundant diameter in a particle size distribution obtained by a dynamic light scattering method, and selecting the lubricating oil composition whose measured value is within a set range.

Method for inspecting lubricating oil composition and method for producing lubricating oil composition

The lubricating oil composition includes a base oil and a fullerene adduct.

Lubricating oil composition and method of producing the same

Provided is a fluorine-containing ether compound capable of forming a lubricant layer having excellent wear resistance even when the thickness is thin, and suitable as a material of a lubricant for a magnetic recording medium. The fluorine-containing ether compound is a compound represented by the following formula (1): R&#x2014;R&#x2014;CH&#x2014;R&#x2014;CH&#x2014;R&#x2014;R; wherein Ris a perfluoropolyether chain; Ris a terminal group bonded to R; Ris a terminal group bonded to R; Ris an alkenyl group or an alkynyl group; Ris a group containing a heterocyclic ring; Ris represented by the following formula (2); Ris represented by the following formula (3); and a in the formula (2) and b in the formula (3) are each independently an integer of 1 to 3. 

Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium

Provided are a conductive composition for thin film printing and a method for forming a thin film conductive pattern, which can easily performing thin film printing, and can capable of improve conductivity by thermal sintering at a comparatively low temperature of 300&#xb0; C. or less or by photo irradiation. A conductive composition comprises metal particles, a binder resin, and a solvent, the content of an organic compound in the solvent being 5 to 98% by mass, the organic compound comprising a hydrocarbon group having a bridged cyclic structure and a hydroxyl group, the content of metal particles being 15 to 60% by mass, the metal particles containing 20% by mass or more of flat metal particles, the content of the binder resin being 0.5 to 10 parts by mass relative to 100 parts by mass of the metal particles, and the viscosity at 25&#xb0; C. being 1.0&#xd7;10to 2&#xd7;10mPa&#xb7;s. The composition is printed in a pattern having any selected shape on a substrate, by screen printing, and the pattern is subjected to thermal sintering at a temperature of 300&#xb0; C. or less and/or subjecting the pattern to pulsed light irradiation.

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Tokyo, Japan

Masumi Kuritani