Casio Computer Co., Ltd.

Takata Corporation

Asahi Kasei Chemicals Corporation

Asahi Kasei Kabushiki Kaisha

Juki Corporation

Mitsubishi Heavy Industries Limited

Omron Corporation

Mitsubishi Heavy Industries Thermal Systems, Ltd.

Junichi Yoshida

Hiroyuki Takeuchi

Kenji Shimizu

Osamu Nakagawa

Takaaki Matsuda

Shinichi Sekikawa

Chigusa Yamada

Miyuki Kazunori

Yutaka Tada

Toshiki Sugiyama

Masao Sambongi

Koji Hiramatsu

Byeongil An

Ryoichi Yoshida

Harumi Watanabe

Tsuneo Chikaraishi

Yuichi Kitagawa

Yoshikazu Nakayama

Kenta Hisamura

Yukio Yamaura

Takashi Orimoto

Katsuhiro Iwase

Yoshitaka Taishi

Hajime Kawai

Takuto Nakata

Takashi Imano

Ryoko Fukuoka

Keigo Sasaki

Masayuki Miyata

Hodaka Hyoudou

Masanobu Sugimoto

Hiroaki Takatsudo

Yutaka Takeuchi

Masahiko Iwafuchi

Masaaki Koike

Shinichi Sugano

Yuichiro Inagawa

Daisuke Hayata

Kiyotaka Sumito

Eiichi Nara

Michizo Iwaki

Atsuyuki Sumiya

Tetsuo Kanie

The present disclosure is directed to provide a methacrylic resin and a methacrylic resin composition which enable production of a shaped article excellent in color tone in a long path length. A methacrylic resin of the present disclosure has a structural unit (X) including a cyclic structure in a main chain thereof. The methacrylic resin having a glass transition temperature (Tg) of higher than 120° C. and 160° C. or lower. An emission intensity at 514 nm in terms of a concentration of a solution of fluorescein in ethanol is 30×10mol/L or less when a solution containing 2.0 mass % of the methacrylic resin in chloroform is spectroscopically analyzed using an excitation wavelength of 436 nm and a slit width of 2 nm.

Methacrylic resin, method of manufacturing methacrylic resin, methacrylic resin composition, shaped article, optical components, and automotive part

A methacrylic resin having a cyclic structure in a main chain thereof, a shaped article, and an optical component or automotive part, in which the glass transition temperature is higher than 120&#xb0; C. and 160&#xb0; C. or lower, and the sign of the orientational birefringence when being oriented so as to have a degree of orientation of 0.03 is different from the sign of the orientational birefringence when being oriented so as to have a degree of orientation of 0.08.

Methacrylic resin, shaped article, and optical component or automotive part

Provided are a methacrylic resin having high heat resistance, highly controlled birefringence, and excellent color tone and transparency, and a production method, a molded article, and an optical or automotive component of the methacrylic resin. The methacrylic resin includes N-substituted maleimide monomer-derived structural units (B) in a main chain thereof in a proportion of 5 mass % to 40 mass %. The N-substituted maleimide monomer-derived structural units (B) include a structural unit represented by formula (1). The methacrylic resin has a glass transition temperature of higher than 120&#xb0; C. and not higher than 160&#xb0; C. The content of components that exhibit light absorption at a wavelength of 400 nm in methanol-soluble content of the methacrylic resin is more than 0 mass % and not more than 2 mass % as calculated in terms of N-phenylmaleimide.

Methacrylic resin and production method, molded article, and optical or automotive component of same

The present invention provides a modified conjugated diene-based polymer, wherein the Mooney stress-relaxation rate measured at 110&#xb0; C. is 0.45 or less, and the modification percentage is 75% by mass or more.

Modified conjugated diene-based polymer and method for producing the same, and modified conjugated diene-based polymer composition

A sewing machine including a detection portion that detects a movement amount of a workpiece, a sewing machine motor that serves as a driving source for vertical movement of a needle bar, and a control device that controls the sewing machine motor based on the detection result by the detection portion and performs control to maintain a constant stitch pitch. The control device lengthens a period for obtaining an output of the detection portion when the movement amount of the workpiece per unit time based on the detection result by the detection portion is decreased, and shortens the period for obtaining the output of the detection portion when the movement amount of the workpiece per unit time based on the detection result by the detection portion is increased.

Sewing machine

A sewing machine includes a sewing machine motor serving as a drive source for driving the vertical movement of a needle bar, a control part for controlling the sewing machine motor such that a sewing pitch coincides with a set value, and imaging part for imaging a seam formed in a workpiece at a needle drop position. The control part obtains the length of the most recent seam from an image of the most recent seam imaged by the imaging part and also compares the length of the most recent seam with the set value of the sewing pitch to thereby correct the number of rotations of the sewing machine motor.

Methacrylic resin having high heat resistance, highly controlled birefringence, excellent color tone and transparency, and excellent moldability is provided. A methacrylic resin comprises a structural unit (B) having a cyclic structure-containing main chain, the structural unit (B) including at least one structural unit selected from the group consisting of an N-substituted maleimide-based structural unit (B-1) and a lactone ring structural unit (B-2), wherein a glass transition temperature is more than 120&#xb0; C. and 160&#xb0; C. or less, an amount of a methanol-soluble content is 5 mass % or less relative to 100 mass % of a total amount of the methanol-soluble content and a methanol-insoluble content in the methacrylic resin, and an yellowness index YI measured using a 10 cm optical path length cell for a 20 w/v % chloroform solution of the methanol-insoluble content is 0 to 7.

Methacrylic resin

A compressor wheel that can more effectively and accurately detect its rotational unbalance than before is provided. The compressor wheel is disposed in a compressor assembly, the compressor wheel including a boss portion mounted on a rotation shaft, a rear plate portion disposed on an opposite side of a tip end portion disposed on one end side of the boss portion, the rear plate portion extending perpendicular to an axial direction of the rotation shaft, and a sensor detection surface formed on a circumferential surface of the tip end portion of the boss portion or on a circumferential surface of the rear plate portion, the sensor detection surface being inclined to the circumferential surface of the end portion or the circumferential surface of the rear plate portion, the sensor detection surface being detectable by an optical sensor that irradiates the sensor detection surface with light and detects light reflected therefrom.

Compressor wheel and unbalance detection device for compressor assembly

A method for producing a modified conjugated diene-based polymer having a good balance between the hysteresis loss properties and the wet skid resistance, practically sufficient abrasion resistance and breaking strength, and high processability when formed into a vulcanized product is provided. A method for producing a modified conjugated diene-based polymer, comprising: a polymerization step of polymerizing a conjugated diene compound, copolymerizing conjugated diene compounds, or copolymerizing a conjugated diene compound with an aromatic vinyl compound using an alkali metal compound or an alkaline earth metal compound as a polymerization initiator to obtain a conjugated diene-based polymer having an active end, and a modifying step of reacting a compound represented by following formula (1) with the active end of the conjugated diene-based copolymer. 

Method for producing modified conjugated diene-based polymer, modified conjugated diene-based polymer, and modified conjugated diene-based polymer composition

An optical sensor configured to irradiate an object area with light and receive reflected light, amplify a voltage in accordance with the reflected light by an amplifier circuit and a resulting voltage, the optical sensor comprising a recording medium recorded with information indicating a noise component calculated, based on characteristics of an input voltage and an output voltage of the amplifier circuit.

Optical sensor, image forming device, and method for correcting toner concentration

A method for producing a modified conjugated diene polymer comprising a polymerization step of obtaining a conjugated diene polymer containing a nitrogen atom in a polymer chain and an active end by copolymerizing a conjugated diene compound and a nitrogen atom-containing vinyl compound, or a conjugated diene compound, an aromatic vinyl compound and a nitrogen atom-containing vinyl compound by use of an alkali metal compound and/or an alkaline earth metal compound as a polymerization initiator, and a modification step of reacting a modifier.

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

A method for producing a modified conjugated diene-based polymer including wherein Rto Reach independently represent an alkyl group having 1 to 20 carbon atoms or an aryl group having 6 to 20 carbon atoms; Rrepresents an alkylene group having 3 to 10 carbon atoms; Rrepresents an alkylene group having 1 to 20 carbon atoms; m is an integer of 1 or 2; and n is an integer of 2 or 3.

Method for producing modified conjugated diene-based polymer, modified conjugated diene-based polymer, modified conjugated diene-based polymer composition, rubber composition and tire

There is provided a modified conjugated diene-based polymer having a silyl group substituted with one or more alkoxy groups, and one or more nitrogen atoms on the chain ends of a conjugated diene-based polymer, the modified conjugated diene-based polymer being obtained by polymerizing a conjugated diene compound, or copolymerizing a conjugated diene compound with an aromatic vinyl compound, by using a polyfunctional anionic polymerization initiator prepared from a polyvinyl aromatic compound and an organolithium compound in a range of a molar ratio (the polyvinyl aromatic compound/the organolithium compound) of from 0.05 to 1.0, so as to obtain the conjugated diene-based polymer, and by reacting a living polymer end of the conjugated diene polymer with the compound having a silyl group substituted with two or more alkoxy groups, and one or more nitrogen atoms.

Modified conjugated diene-based polymer, method for producing the same, modified conjugated diene-based polymer composition, and tire

There are provided a modified conjugated diene-based polymer having a good balance between the hysteresis loss properties and the wet skid resistance, practically sufficient abrasion resistance and fracture strength, and high processability when formed into a vulcanized product, and a modified conjugated diene-based polymer composition. A method for producing a modified conjugated diene-based polymer, comprising: a polymerization step of polymerizing a conjugated diene compound or copolymerizing a conjugated diene compound with an aromatic vinyl compound using an alkali metal compound or an alkaline earth metal compound as a polymerization initiator to obtain a conjugated diene-based polymer having a reactive end, and a modifying step of reacting a compound having a specific structure with the reactive end of the conjugated diene-based polymer.

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Tokyo, Japan

Junichi Yoshida