Daicel Corporation

Kabushiki Kaisha Toshiba

Hitachi High-tech Corporation

Daicel Chemical Industries, Ltd.

Toru Shibata

Hiromichi Okura

Satoshi Shinkura

Yuki Hirabayashi

Katsuya Okumura

Shinji Sato

Atsushi Ando

Tetsuro Nakasugi

Kazuyoshi Sugihara

Yumi Watanabe

Shunko Magoshi

Hiromi Niiyama

Yasuto Morishita

Yosimitu Kato

Hiroki Takahashi

Katsuhiro Kambara

Toru Ozaki

Shu Shimamoto

Shigeki Yamaguchi

Toshifumi Mitsuyama

Tooru Miyasaka

Atsushi Ohnishi

Keiji Nishihara

Yoshiki Kanai

Yosuke Ito

Provided are porous cellulose particles containing chitosan and having predetermined pores on a surface and a predetermined particle diameter, and a method for producing the porous cellulose particles. Porous cellulose particles including unsubstituted cellulose and chitosan, wherein a content of the chitosan is not greater than 20 mass % in a total of 100 mass % of the unsubstituted cellulose and the chitosan, pores having a diameter from 0.05 to 5 μm are observed in an image of surfaces of the porous cellulose particles observed by a scanning electron microscope, and a proportion of porous cellulose particles having a particle diameter from 10 to 200 μm is not less than 90 mass %.

Porous cellulose particles and method for producing same

A robot hand for gripping and operating a pipette, the robot hand including: an electric gripper; a pair of first finger members opened and closed by the electric gripper; a pair of second finger members provided on the first finger member and having a pipette gripping surface; and an operating mechanism installed on the first finger member to operate an operation target of the pipette.

Robot hand for gripping and operating a pipette

Provided is novel porous cellulose having functionality that is not imparted to porous cellulose composed of unsubstituted cellulose, and a method for producing the same. Porous cellulose containing: unsubstituted cellulose; and a glucose unit-containing polymer excluding unsubstituted cellulose, wherein a content of the polymer is not more than 20 mass % in 100 mass % of a total of the polymer and the unsubstituted cellulose.

Porous cellulose and method for producing same

Provided is a novel porous cellulose medium that can efficiently separate a large target molecule in a calibration standard. A porous cellulose medium including a porous cellulose particle having a particle size from 1 to 600 μm, wherein, in sieving the porous cellulose medium for classification and using a fraction corresponding to aperture openings between 53 μm and 106 μm as a support for size exclusion chromatography, a polyethylene oxide standard is run through size exclusion chromatography with pure water as a mobile phase, and a weight average molecular weight Mw and a gel partition coefficient Kof the polyethylene oxide standard satisfy Relationships (A) and (B) above:in a case where 4.80≤log≤5.50,>−0.445×log+2.55  (A)in a case where 5.75≤log,0≤<0.19  (B).

Porous cellulose medium

Provided is a novel method for producing cellulose beads, the method being capable of suitably producing spherical cellulose beads. The method for producing cellulose beads includes: (Step 1) preparing a coagulating bath having a first liquid medium phase and a second liquid medium phase; (Step 2) forming a particulate cellulose solution in the first liquid medium phase by supplying a cellulose solution to the first liquid medium phase of the coagulating bath; and (Step 3) coagulating the particulate cellulose solution by supplying the particulate cellulose solution in the first liquid medium phase to the second liquid medium phase.

Method for producing cellulose beads

Provided is a technique for increasing discriminating ability, preventing human error, and improving efficiency of discrimination in a discrimination operation for extracting a sample satisfying a specific condition from among a plurality of samples. A sample discrimination system according to the present disclosure is provided with a plurality of sample retaining devices for retaining samples, and a sample information query device for querying a sample retaining device that matches predetermined query information from among the plurality of sample retaining devices. The sample information query device has a query information input unit for inputting of predetermined query information, and a query information transmission unit for transmitting predetermined query information to the sample retaining devices. The sample retaining devices are each characterized by having a storage unit for storing sample information, a comparison unit for comparing predetermined query information and sample information, and a first display unit for outputting the result of comparison by the comparison unit.

Sample discrimination system and sample automatic processing apparatus using same, and sample discrimination method

Provided is a separation method for amine, the separation method including performing liquid chromatography, wherein a separating agent in which a ligand having a crown ether-like cyclic structure is supported on a carrier is used as a stationary phase, and wherein a mobile phase contains an aqueous solution of at least one salt of a hydrophobic anion selected from the group consisting of a salt of a chaotropic anion and a salt of a hydrophobic organic acid.

Amine separation method using liquid chromatography

Provided is a novel method by which a porous cellulose medium is able to be suitably produced from cellulose acetate. A method for producing a porous cellulose medium, which comprises: a step for preparing a cellulose acetate solution wherein cellulose acetate is dissolved in a solvent; and a step for obtaining a mixed solution by mixing the cellulose acetate solution, a deacetylating agent and a catalyst with each other.

Method for producing porous cellulose medium

Provided is a chromatography stationary phase having an excellent molecule discriminating ability. Specifically, provided is a chromatography stationary phase including a carrier carrying a copolymer that has a pyrrolidone backbone or a piperidone backbone, and an imide backbone in a repeating unit of the main chain.

Chromatography stationary phase

The present invention provides a technique for preparing a porous cellulose medium, through the gelation of a solution in which cellulose acetate as a raw material is dissolved, which does not cause a reaction involving the migration of substances. Specifically, a method for producing a porous cellulose medium is provided which includes the steps of gelling a flowable homogeneous composition containing cellulose acetate, an organic solvent, and water through a decrease in temperature; and hydrolyzing the cellulose acetate contained in the resulting gel.

Provided is a stationary phase for supercritical fluid chromatography that includes a carrier on which is supported a polymer that includes a pyrrolidone backbone in the repeating units of the main chain.

Stationary phase for supercritical fluid chromatography

Provided are a technique for preparing a porous cellulose medium without using a special gelling agent for a solution in which cellulose acetate serving as a raw material is dissolved; and a porous cellulose medium and the like produced using the technique. A method for producing a porous cellulose medium comprises the step of preparing a flowable homogeneous composition comprising cellulose acetate, a basic compound, and a solvent including water, and gelling the composition by deacetylation reaction of the cellulose acetate.

A stationary phase that increases the number of column stages and that exhibits an excellent molecular discrimination ability is realized by a stationary phase that contains a polymer having, in main chain repeat units, an aromatic ring that forms a portion of the main chain and a bipolar atomic group that forms a portion of the main chain, wherein the stationary phase has a specific surface area of 5 to 1000 m/g.

Stationary phase

The present invention provides a cellulose ester in which heat resistance under wet condition is compatible with both releasability and spinnability even when the amount of the residual solvent is small in a casting process. The cellulose ester fulfills the following formula:0.5&#x3c;()/()&#x3c;1.5 wherein (A) and (B) represent the total amount (in terms of molar amount) of residual sulfuric acid in 1 gram of the cellulose ester and the total amount (in terms of molar amount) of calcium contained in 1 gram of the cellulose ester, respectively.

Cellulose ester having improved stability to wet heat

A rough pattern exceeding the resolution limit of light exposure is formed by light resolution. A fine pattern not exceeding the resolution limit of light exposure is formed by charge-beam exposure. Combining the rough pattern and the fine pattern produces a desired pattern. The sharing of the work between light exposure and charge-beam exposure exhibits the high throughput of light exposure and the excellent resolving power of charge-beam exposure.

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Himeji, Japan

Toru Shibata