Jsr Corporation

Jeol Ltd.

Mitsubishi Electric Corporation

Eneos Materials Corporation

Koyo Sangyo Co., Ltd.

Asahi Kasei Chemicals Corporation

Q.p. Corporation

Ryoji Tanaka

Koichiro Tani

Koji Okada

Hiroyuki Morita

Takumi Adachi

Hiroto Suematsu

Naoki Sugiyama

Shigenori Tsuji

Fumio Hobo

Kunpei Kobayashi

Masahiro Shibata

Shinji Nakamura

Shigeru Abe

Takeshi Yuasa

Naoya Nosaka

Takahiro Kawai

Hirofumi Senga

Takaomi Matsumoto

Jun Kida

Yoshiaki Yamakoshi

Katsuyuki Toshima

Mitsumasa Horikawa

Yasuo Tamura

Takahiko Gohma

Hiroshi Ikeda

Hideki Nakamura

Hideaki Takahashi

Takuya Sano

Hideaki Kobayashi

Yoshiki Kida

Akio Fujiwara

Yoshiyuki Udagawa

Fumihiro Toyokawa

Shigeki Mizuno

Takato Fukumoto

Keisuke Sambongi

Masahide Nishiyama

Toshiharu Tanaka

Kazuyuki Inoue

Ryo Sasahara

Terumasa Okada

Hideki Nasu

Mitsunori Inoue

Minori Kayanuma

Kayo Sugiura

Nanako Abe

Tetsuo Miyamoto

Jiro Ueda

Shinji Ishiguro

Masanori Hirose

Kenji Yanagibashi

Takayuki Watanabe

A method for producing a rubber composition may include: mixing modified silica (B), pre-prepared by surface treatment of unmodified silica, with a modified conjugated diene-based polymer (A) and a polymer having crystalline character (C). A crosslinked product may be produced through crosslinking a rubber composition obtained from such a method. The crosslinked product may be used for producing a tire including a tread and a sidewall, wherein at least one of the tread and the sidewall is formed of the crosslinked product.

Rubber composition, crosslinked product, and tire

A rubber composition contains (A) a modified conjugated diene-based polymer, (B) modified silica, and (C) a polymer having crystalline character. A crosslinked product is produced through crosslinking of the rubber composition containing the modified conjugated diene-based polymer (A), the modified silica (B), and the polymer having crystalline character (C). The crosslinked product is used for producing a tire including a tread and a sidewall, wherein at least one of the tread and the sidewall is formed of the crosslinked product.

Provided is a rubber material that is well-balanced in terms of tensile strength, low hysteresis loss property, wet grip property, and abrasion resistance. A hydrogenated conjugated diene-based polymer which is a hydrogenation product of a conjugated diene-based polymer including butadiene-derived structural units is produced by a method comprising a step of preparing a conjugated diene-based polymer having, at a side chain moiety thereof, a functional group capable of interacting with silica; and a step of hydrogenating the conjugated diene-based polymer so as to achieve a hydrogenation rate of 80 to 99% of butadiene-derived structural units included in the conjugated diene-based polymer.

Method for producing hydrogenated conjugated diene-based polymer, hydrogenated conjugated diene-based polymer, polymer composition, cross-linked polymer, and tire

A pair of detection coils, one coil provided on each side of a sample container across the width of the sample container. The detection coil is made of a superconductor and has an electric circuit pattern capable of detecting a magnetic resonance signal from a sample. The detection coil includes a lateral component intersectional to a static magnetic field Hand having a part disposed at a position spaced away from a detection region, as compared to the remaining part.

Magnetic resonance signal detection module

A modified conjugated diene-based polymer is produced by reacting a conjugated diene-based polymer having an alkali metal or an alkali-earth metal at a terminal of the polymer with a compound represented by formula (1). Rand Rindependently represent a hydrocarbyl group having 20 or fewer carbon atoms. Rrepresents a substituted alkyl group having 20 or fewer carbon atoms prepared through substitution of at least one of a hydrogen atom and &#x2014;CH&#x2014; of an alkyl group by a group containing only at least one heteroatom selected from the group consisting of nitrogen, phosphorus, oxygen, and sulfur, or a monovalent aromatic group having 20 or fewer carbon atoms and containing at least one element selected from the group consisting of nitrogen, phosphorus, oxygen, and sulfur, with the proviso that Rdoes not have active hydrogen. Rrepresents an alkanediyl group having 20 or fewer carbon atoms. n is 1 or 2. 

Modified conjugated diene polymer, method for producing modified conjugated diene polymer, polymer composition, crosslinked polymer, and tire

A traction machine base includes a top member, a bottom member, a bottom member, first bolts, and second bolts. The top member is intended for supporting a traction machine. A plurality of attachment holes for fixing the top member are formed in the bottom member. A plurality of attachment holes for fixing the top member are formed in the bottom member. The first bolts pass through the attachment holes and fix the top member to the bottom member. The second bolts pass through the attachment holes and fix the top member to the bottom member. The top member is fixed to the bottom member using a smaller number of the first bolts than the number of the attachment holes. The top member is fixed to the bottom member using a smaller number of the second bolts than the number of the attachment holes.

Traction machine base of elevator and elevator device

Provided is a tire member which is satisfactory in low fuel consumption performance and exhibits higher strength and more excellent abrasion resistance as compared with conventional ones. The tire member is a tire member obtained by subjecting a composition containing a hydrogenated conjugated diene polymer and a crosslinking agent to a crosslinking treatment, wherein the hydrogenated conjugated diene polymer is a hydrogenated product of a conjugated diene polymer that has a structural unit derived from butadiene and has a functional group at one end or both ends and the functional group is one or more groups selected from the group consisting of an amino group, an imino group, a pyridyl group, a phosphino group, a thiol group, and a hydrocarbyloxysilyl group.

Tire member, hydrogenated conjugated diene polymer, and polymer composition

A measurement apparatus is attached to a guide rail above a car. Next, a measurement by the measurement apparatus is performed, and first dimensional data including dimensional data on an upper part of a shaft is acquired. The measurement apparatus is detached from the guide rail, and the car is moved upward and then stopped. The measurement apparatus is attached to the guide rail below the car after the car is stopped. A measurement by the measurement apparatus is performed, and second dimensional data including dimensional data on a lower part of the shaft is acquired. The acquired first dimensional data and the acquired second dimensional data are integrated, and dimensional data on the entire shaft is created.

Method for measuring shaft and interference determination system

A device for attaching and detaching a cryogenic probe to and from a nuclear magnetic resonance (NMR) spectrometer. The device permits the probe to be loaded in the spectrometer in a shortened time and achieves high measurement throughput. The device has loading platforms (--) on which cryogenic probes (P, P) are loaded. Each loading platform has a horizontal drive mechanism, a vertical drive mechanism, and a spacing mechanism. The device further includes probe cooling devices (--) for circulating a refrigerant to and from the cryogenic probes (P, P) via transfer tubes (--) made of a flexible material, thus cooling the probes (P, P). A temperature-controlled gas feeder () supplies a temperature variable gas for temperature adjustment to the probes (P, P). A vacuum pumping system () evacuates the interiors of the probes (P, P) via vacuum pipes (--) made of a flexible material.

Device for attaching and detaching NMR probe

A modified conjugated diene polymer obtained by modifying a conjugated diene polymer that is obtained by polymerizing a conjugated diene compound or polymerizing a conjugated diene compound and an aromatic vinyl compound is produced by a production method comprising a first modification step wherein an unsaturated binding site at least either in the skeleton or at the side chain of the conjugated diene polymer is reacted with a first compound having a group 4 or 13 element of the periodic table.

Method for producing modified conjugated diene polymer, polymer composition, crosslinked polymer and tire

A modified conjugated diene-based polymer is produced that is a modified product of a conjugated diene-based polymer obtained by polymerizing a conjugated diene compound, or polymerizing a conjugated diene compound and an aromatic vinyl compound, in the presence of an alkali metal compound or an alkaline-earth metal compound. The modified conjugated diene-based polymer is produced by a production method that includes a main chain modification step that reacts at least either an unsaturated bond or a functional group that is included in a terminal-modified polymer and is not situated at a terminal of the terminal-modified polymer, with a specific compound that includes a functional group that interacts with silica, the terminal-modified polymer being obtained by introducing a functional group that interacts with silica into at least one terminal of the conjugated diene-based polymer.

Method for producing modified conjugated diene polymer, modified conjugated diene polymer, polymer composition, crosslinked polymer, and tire

An NMR spectrometer and method in the following three steps are performed. (1) An external magnetic field is set to H+&#x394;H (where 4H&#x3e;0). When the detection coil made of the superconducting material is still in a normal state, a magnetic field stronger than the ultimate target static magnetic field strength Hby &#x394;H is applied to the detection coil. (2) The detection coil made of the superconducting material is cooled down to Tlower than its critical temperature Tto bring the coil into a superconducting state while the external magnetic field H+&#x394;H is applied to the detection coil. (3) The external magnetic field is lowered from H+&#x394;H to Hsuch that the applied external magnetic field is decreased by &#x394;H while the detection coil is kept in the superconducting state.

NMR spectrometer and method of setting up the same

A rubber composition by which a rubber elastic body having both of excellent low rolling resistance and wet skid resistance and also having excellent mechanical strength and wear resistance can be obtained, a rubber elastic body, a tire, and a block copolymer are provided. The rubber composition of the present invention comprises a block copolymer (A) comprising a block (a-1) of a conjugate diene and an aromatic vinyl and a block (a-2) of a conjugate diene or the diene and an aromatic vinyl, a specific polymer (B) other than the copolymer, and a filler (C), wherein the block copolymer (A) has a specific functional group; the block copolymer (A) has two glass transition temperatures separated from each other by 5&#xb0; C. or more within a range of &#x2212;100 to 20&#xb0; C. in measurement in accordance with ASTM D3418; and the ratio of the block copolymer (A) is 10% by mass or more when the sum of the block copolymer (A) and the polymer (B) is taken as 100% by mass.

Rubber composition, rubber elastomer, tire and block copolymer

A method containing a step of reacting a conjugated diene polymer having an alkali metal or alkaline earth metal active end with a hydrocarbyloxysilane compound having one or more of each of the following functional groups I and II in its molecule to obtain a modified conjugated diene polymer containing a functional group II, and a step of mixing the modified conjugated diene polymer and a compound such as organic acid. A modified conjugated diene rubber which can be used as a raw material of a cross-linked rubber which can be used in tire treads and the like and can enhance low fuel consumption performance is provided. The functional group I is a hydrocarbyloxysilyl group. The functional group II is a nitrogen-containing group in which both of two hydrogen atoms of a primary amino group are substituted with protective groups.

Modified conjugated diene rubber, method for producing same, and rubber composition

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Tokyo, Japan

Ryoji Tanaka