公开(公告)号：US20240226848A1

公开(公告)日：2024-07-11

申请号：US18684071

申请日：2021-08-16

Applicant: NATIONAL UNIVERSITY CORPORATION KANAZAWA UNIVERSITY ,  DAICEL CORPORATION

Inventor： Katsuhiro MAEDA ,  Tsuyoshi TANIGUCHI ,  Tatsuya NISHIMURA ,  Hiroya OKAMOTO ,  Hiroshi HASEGAWA ,  Asami MASHIO ,  Kuo Hong WONG ,  Motohiro TAKEKUMA ,  Masaru ENDO ,  Takashi ARAI

IPC: B01J20/24 ,  B01J20/28

CPC classification number: B01J20/24 ,  B01J20/28019 ,  B01J2220/4825

Abstract: There is provided a cellulose derivative that has a high amount of a chelate adsorption group introduced, has high hydrophilicity, and is capable of efficiently recovering boron.
The cellulose derivative of the present disclosure has a repeating unit represented by the following formula (1-1). In the following formula (I-1), Ra is the same as or different from each other, and is a hydroxyl group or a group represented by the following formula (a). In the following formula (a), R1 represents a hydrogen atom or a methyl group. R2 represents a hydrogen atom or a hydrocarbon group optionally having a hydroxyl group. R3 represents a hydrogen atom or a hydrocarbon group. Note that at least one of all R3 contained in the cellulose derivative is the group represented by the following formula (a).

公开(公告)号：US20180022832A1

公开(公告)日：2018-01-25

申请号：US15521200

申请日：2015-10-23

Applicant: NATIONAL UNIVERSITY CORPORATION KANAZAWA UNIVERSITY ,  Kanazawa Institute of Technology

Inventor： Ryohei KAKUCHI ,  Kazuaki NINOMIYA ,  Yoshiki SHIBATA ,  Kiyoshi UZAWA ,  Tomoki OGOSHI ,  Katsuhiro MAEDA ,  Tomoyuki IKAI ,  Kenji TAKAHASHI

IPC: C08B3/06 ,  C08B11/02 ,  C08B3/18 ,  C07G1/00

CPC classification number: C08B3/06 ,  C07G1/00 ,  C08B3/00 ,  C08B3/18 ,  C08B11/00 ,  C08B11/02 ,  Y02P20/542

Abstract: An object is to provide a method for producing a polysaccharide derivative without using a catalyst, a cocatalyst, or an active compound by esterification, etherification, or the like, from a polysaccharide such as cellulose as a source material, while maintaining a high molecular weight. Another object is to provide a method for producing a cellulose derivative in a separated condition directly from biomass containing lignocellulose. A method for producing a polysaccharide derivative of the present invention is characterized in that a reaction is carried out in a mixture comprising: a source material comprising a polysaccharide; an ionic liquid for which the pKa of a conjugate acid of an anion in DMSO is 12 to 19 and which is capable of producing a carbene; and a chain or cyclic ester compound or an epoxy compound. Preferably as a source material containing a polysaccharide, a biomass source material containing lignocellulose is used.

公开(公告)号：US20150376308A1

公开(公告)日：2015-12-31

申请号：US14766853

申请日：2014-02-10

Applicant: NATIONAL UNIVERSITY CORPORATION KANAZAWA UNIVERSITY

Inventor： Katsuhiro MAEDA ,  Shigeyoshi KANOH ,  Tomoyuki IKAI ,  Kouhei SHIMOMURA ,  Miyuki MARUTA

IPC: C08F138/00

CPC classification number: C08F138/00 ,  B01J20/29 ,  B01J20/3204 ,  B01J20/3208 ,  B01J20/327 ,  B01J20/328 ,  C08F8/00 ,  C08F8/14 ,  C08F38/00 ,  C08F238/00 ,  G01N30/88 ,  G01N2030/8877

Abstract: The present invention provides an optically active poly(diphenylacetylene) compound represented by the following formula (I): [wherein each symbol is as described in the DESCRIPTION], and a production method thereof, an optical isomer separating agent containing the poly(diphenylacetylene) compound, and a packing material for a chiral column, containing the optical isomer separating agent coated on a carrier. According to the present invention, a practical optical isomer separation agent having a high optical resolution ability for a wide variety of racemic compounds and an optical isomer separation method can be provided.

Abstract translation: 本发明提供由下式（I）表示的光学活性聚（二苯基乙炔）化合物：[其中各符号如说明书所述]及其制备方法，含有聚（二苯基乙炔） 化合物和用于手性柱的包装材料，其包含涂覆在载体上的旋光异构体分离剂。 根据本发明，可以提供对各种外消旋化合物具有高的光学拆分能力和旋光异构体分离方法的实用的光学异构体分离剂。

公开(公告)号：US20250128236A1

公开(公告)日：2025-04-24

申请号：US18693451

申请日：2022-09-20

Applicant: NATIONAL UNIVERSITY CORPORATION KANAZAWA UNIVERSITY ,  DAICEL CORPORATION

Inventor： Katsuhiro MAEDA ,  Tatsuya NISHIMURA ,  Tsuyoshi TANIGUCHI ,  Sandip DAS ,  Mayu FUKUDA ,  Hiroshi HASEGAWA ,  Asami MASHIO ,  Kuo Hong WONG ,  Keisuke NAKAKUBO ,  Foni Bushon BISWAS ,  Takashi ARAI ,  Masaru ENDO

IPC: B01J20/26 ,  B01J20/30 ,  C02F1/28 ,  C02F101/20 ,  C22B3/00 ,  C22B3/24 ,  C22B11/00 ,  C22B15/00 ,  C22B21/00 ,  C22B26/10 ,  C22B26/22 ,  C22B30/06 ,  C22B34/22 ,  C22B47/00 ,  C22B61/00

Abstract: Provided is a water-insoluble crosslinked structure with an excellent metal-adsorbing effect. The crosslinked structure is formed by crosslinking a first linear polymer and a second linear polymer. The first linear polymer has a plurality of pendant groups represented by Formula (a). The second linear polymer has a plurality of pendant groups represented by Formula (a). Some of the plurality of pendant groups in the first linear polymer and some of the plurality of pendant groups in the second linear polymer are bonded to each other via a crosslinker. In the formula, ring Z represents a heterocycle containing a nitrogen atom as a heteroatom, R1 represents a single bond or an alkylene group having from 1 to 10 carbons, and Q+ represents a counter cation.

公开(公告)号：US20230302430A1

公开(公告)日：2023-09-28

申请号：US18020762

申请日：2020-08-11

Applicant: NATIONAL UNIVERSITY CORPORATION KANAZAWA UNIVERSITY ,  DAICEL CORPORATION

Inventor： Hiroshi HASEGAWA ,  Keisuke NAKAKUBO ,  Koki YUNOSHITA ,  Asami MASHIO ,  Katsuhiro MAEDA ,  Tsuyoshi TANIGUCHI ,  Tatsuya NISHIMURA ,  Yoko MITSUHASHI ,  Masaru ENDO ,  Takashi ARAI

IPC: B01J20/24 ,  C02F1/28 ,  B01J20/30

CPC classification number: B01J20/24 ,  C02F1/286 ,  B01J20/3085 ,  C02F2101/106

Abstract: The present disclosure provides an adsorbent which is produced using a low environmental load material as a raw material and adsorbs selenious acid selectively and efficiently. A selenious acid adsorbent according to the present disclosure includes a cellulose derivative (I) having a repeating unit represented by Formula (I). In Formula (I), each Ra represents a hydrogen atom, a group represented by Formula (a-1), or a group represented by Formula (a-2), and at least one of all the Ras included in the cellulose derivative is a group represented by Formula (a-1) or a group represented by Formula (a-2):

公开(公告)号：US20230278007A1

公开(公告)日：2023-09-07

申请号：US18007888

申请日：2020-06-03

Applicant: NATIONAL UNIVERSITY CORPORATION KANAZAWA UNIVERSITY ,  DAICEL CORPORATION

Inventor： Katsuhiro MAEDA ,  Tsuyoshi TANIGUCHI ,  Tatsuya NISHIMURA ,  Hiroshi HASEGAWA ,  Futo MORITA ,  Koki YUNOSHITA ,  Foni Bushon BISWAS ,  Asami MASHIO ,  Masaru ENDO ,  Takashi ARAI

IPC: B01J20/24 ,  C02F1/28

CPC classification number: B01J20/24 ,  C02F1/286 ,  B01J2220/4825 ,  C02F2101/20

Abstract: The present disclosure provides a cellulose derivative which has excellent storage stability and can selectively adsorb a valuable metal and a toxic metal. The cellulose derivative of the present disclosure has a repeating unit represented by Formula (I) below. In Formula (I) below. Ras are identical or different and are a hydrogen atom or a group represented by Formula (a) below. In Formula (a) below, ring Z represents a heterocycle containing a nitrogen atom as a heteroatom, and R1 represents a single bond or an alkylene group having from 1 to 10 carbons. Four R2s are identical or different, and each represent an alkyl group having from 1 to 10 carbons. At least one of all the Ras included in the cellulose derivative is a group represented by Formula (a) below.