Kawasaki Jukogyo Kabushiki Kaisha

Sumitomo Seika Chemicals Co., Ltd.

Advanced Softmaterials Inc.

Ciba Specialty Chemicals Corporation

Akira Kimura

Noriyuki Okaya

Minehiko Mukaida

Masayuki Enomoto

Tetsuya Kubota

Masanori Hamamatsu

Hiroaki Kagaya

Akiyoshi Saiki

Kazuya Sumino

Hiroki Okazaki

Teruo Kishimoto

Yuika Imamura

Hisatoshi Kura

Jean-Luc Birbaum

Hidetaka Oka

Martin Kunz

Changming Zhao

Takatoshi Shoji

Tomoaki Yamasaki

Shinya Okazaki

Toru Ido

Noboru Yamaguchi

Hiroko Nakashima

Naohisa Hayamizu

Takahiro Toyoura

Amina Tashiro

Noriyukí Okaya

A method for producing a polyalkylene oxide includes step 1 of performing a polymerization reaction of an alkylene oxide in the presence or absence of a chain transfer agent to obtain a high-molecular-weight polyalkylene oxide; and step 2 of irradiating the high-molecular-weight polyalkylene oxide obtained in step 1 with radiation to obtain a polyalkylene oxide, wherein the amount of the chain transfer agent when used is less than 300 mass ppm relative to the alkylene oxide, and the high-molecular-weight polyalkylene oxide obtained in step 1 has a viscosity at 25° C. in a 1 mass % aqueous solution of 7500 mPa·s or more.

Method for producing polyalkylene oxide

A method for producing a polyalkylene oxide includes a step of irradiating a high-molecular-weight polyalkylene oxide with radiation in the presence or absence of an antioxidant to obtain a polyalkylene oxide,

Method for producing polyalkylene oxide and polyalkylene oxide

An underwater mobile inspection apparatus capable of inspecting an inspection object on a seafloor while cruising includes a cruising body configured to submerge under-water and cruise along the inspection object so as to not come into contact with the inspection object, a first movable arm provided on the cruising-body, and an inspection tool unit provided on the first movable arm and including at least one of an image-capturing camera for use in visually inspecting the inspection object and a device configured to inspect a wall thickness of the inspection object by using an ultrasonic wave. A controller is configured to, when the cruising-body cruises along the inspection object so as to not come into contact with the inspection object, operate the first movable arm to move the inspection tool unit, such that a positional relationship of the inspection tool unit with the inspection object becomes a predetermined target positional relationship.

Underwater mobile inspection apparatus and underwater inspection equipment

The invention provides a drag reducer having an excellent frictional drag-reducing effect on an aqueous medium and the like and also provides a fire-extinguishing agent including this drag reducer. The drag reducer according to the present invention includes a polyalkylene oxide aqueous dispersion that includes a polyalkylene oxide, aluminum oxide, an electrolyte, and water, and that has the polyalkylene oxide dispersed therein. The drag reducer has an excellent frictional drag-reducing effect on an aqueous medium and the like.

Drag reducer and fire-extinguishing agent

The present invention provides a method for producing an aqueous dispersion of pseudopolyrotaxane that enables the production, by an industrially advantageous method for an aqueous dispersion of pseudopolyrotaxane in which the inclusion amount of a cyclodextrin does not increase with time and which can provide a crosslinked polyrotaxane having sufficient stretchability and breaking strength. The present invention relates to a method for producing an aqueous dispersion of pseudopolyrotaxane containing pseudopolyrotaxane particles in which a polyethylene glycol is included in a cavity of a cyclodextrin molecule in a skewered manner, the method including: an inclusion step of mixing a polyethylene glycol and a cyclodextrin in an aqueous medium to include the polyethylene glycol in a cavity of a cyclodextrin molecule, wherein in the inclusion step, a basic compound is added.

Method for producing pseudopolyrotaxane aqueous dispersion

An underwater mobile inspection apparatus capable of inspecting an inspection object on a seafloor while cruising; including a cruising body configured to submerge under-water and cruise along the inspection object so as to not come into contact with the inspection object, a first movable arm provided on the cruising-body, and an inspection tool unit provided on the first movable arm and including at least one of an image-capturing camera for use in visually inspecting the inspection object and a device configured to inspect a wall thickness of the inspection object by using an ultrasonic wave. A controller is configured to, when the cruising-body cruises along the inspection object so as to not come into contact with the inspection object, operate the first movable arm to move the inspection tool unit, such that a positional relationship of the inspection tool unit with the inspection object becomes a predetermined target positional relationship.

The present invention includes: first and second tanks and each configured to store a fluid containing fine powder; a communication pipe through which the first and second tanks and communicate with each other; and a transfer portion configured to transfer the fluid stored in a desired one of the first and second tanks to the other tank. Each of the tanks and includes a first chamber and a second chamber that are separated by a deformable dividing wall. Each of the first chambers stores an incompressible fluid, and each of the second chambers stores the fluid having higher specific gravity and viscosity than the incompressible fluid. The second chambers of the first and second tanks communicate with each other through the communication pipe. When the incompressible fluid is supplied to the desired first chamber, the transfer portion can discharge the incompressible fluid from the other first chamber.

Fluid transfer device, ship including the same, and fluid for use in transfer device

An underwater mobile inspection apparatus is capable of inspecting a subsea pipeline (inspection object) while cruising. The underwater mobile inspection apparatus includes: a cruising body configured to submerge under water and cruise along the inspection object in such a manner as not to come into contact with the subsea pipeline; a first movable arm provided on the cruising body; an inspection tool unit for use in inspecting the subsea pipeline, the inspection tool unit being provided on the first movable arm; and a controller configured to, when the cruising body cruises along the subsea pipeline in such a manner as not to come into contact with the subsea pipeline, operate the first movable arm to move the inspection tool unit, such that a positional relationship of the inspection tool unit with the subsea pipeline becomes a predetermined target positional relationship.

The present invention aims to provide a method for producing a polyrotaxane which enables industrially advantageous production of a polyrotaxane with a high inclusion rate. The present invention relates to a method for producing a polyrotaxane that includes a cyclodextrin; a compound having a repeating structural unit represented by the following formula (1), and threading through a cavity of the cyclodextrin in a skewered manner to be included in the cyclodextrin; and capping groups individually placed at each end of a molecule of the compound having a repeating structural unit represented by the formula (1) to prevent the cyclodextrin from separating, the method comprising: a step 1 of mixing the compound having a repeating structural unit represented by the formula (1) and the cyclodextrin in an aqueous medium to prepare an aqueous dispersion of pseudopolyrotaxan particles in which the compound having a repeating structural unit represented by the formula (1) is included in a cavity of a cyclodextrin molecule in a skewered manner; and a step 2 of mixing a triazine compound represented by the formula (2), a compound having at least one tertiary amino group, the aqueous dispersion of pseudopolyrotaxane particles prepared in the step 1, and a capping agent to introduce capping groups individually at each end of a molecule of the compound having a repeating structural unit represented by the formula (1) in the pseudopolyrotaxane particles, wherein, in the formula (2), Rand Rare each independently a C1-C4 alkyl group or a C6-C8 aryl group, and X represents a halogen atom.

Method for manufacturing polyrotaxane

A carbon dioxide separation method and a carbon dioxide separation apparatus capable of maintaining a carbon dioxide adsorption capacity for a long term by collecting an amine compound that evaporates during an operation of the apparatus and reloading the amine compound onto a carbon dioxide adsorbent. An amine collector and an amine aqueous solution preparation device are connected to an adsorbent-packed tank packed with a carbon dioxide adsorbent. An amine compound that evaporates from the carbon dioxide adsorbent during an operation of the apparatus is collected by the amine collector into the amine aqueous solution preparation device. The collected amine compound is reloaded onto the carbon dioxide adsorbent via a supply line.

Carbon dioxide separation method and apparatus

Compounds of formula I, II or III ##STR1## X is a divalent radical; Y is C.sub.1 -C.sub.6 aklylene, cyclohexylene or a direct bond;

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Hyogo, Japan

Akira Kimura