Title:
POLYSACCHARIDE DERIVATIVE, HEAVY METAL REMOVING MATERIAL USING SAME, AND HEAVY METAL REMOVING METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2020/027090
Kind Code:
A1
Abstract:
The present invention provides a novel polysaccharide derivative which is able to selectively adsorb and recover a heavy metal with high efficiency. A polysaccharide derivative according to the present invention is obtained by substituting at least some of hydrogen atoms of the hydroxyl groups contained in a polysaccharide by a group represented by formula (a), said polysaccharide being obtained by bonding a plurality of monosaccharides, while being configured such that the content ratio of glucose in all monosaccharides that constitute the polysaccharide is from 75.0% by mole to 99.8% by mole and the content ratio of the total of mannose and xylose therein is from 0.2% by mole to 25.0% by mole.
In the formula, R1 moiety represents a single bond or an alkylene group having 1-10 carbon atoms; R2 moiety represents a hydrogen atom or an alkyl group having 1-10 carbon atoms; and R3 moieties may be the same or different, and each represents an alkyl group having 1-10 carbon atoms.
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Inventors:
NAKATANI KOUJI (JP)
INOUE KEIZO (JP)
SUZUKI MASAHIKO (JP)
INOUE KEIZO (JP)
SUZUKI MASAHIKO (JP)
Application Number:
PCT/JP2019/029743
Publication Date:
February 06, 2020
Filing Date:
July 30, 2019
Export Citation:
Assignee:
DAICEL CORP (JP)
International Classes:
C08B3/14; B01J20/24; B01J20/30; C02F1/28
Foreign References:
| JP2014109064A | 2014-06-12 | |||
| US20140014586A1 | 2014-01-16 | |||
| JP2018083882A | 2018-05-31 |
Other References:
ITO, MIKIYA ET AL.: "Development of cellulose derivatives with dithiocarbamate groups capable of adsorbing and removing trivalent arsenic", LECTURE ABSTRACTS OF THE 66TH HOKURIKU BRANCH RESEARCH PRESENTATION OF THE SOCIETY OF POLYMER SCIENCE, JAPAN, 18 November 2017 (2017-11-18), pages 69
T AN, L. ET AL.: "Preferring cellulose of Eichhornia crassipes to prepare xanthogenate to other plant materials and its adsorption properties on copper", BIORESOURCE TECHNOLOGY, vol. 99, no. 10, 2008, pages 4460 - 4466, XP022526262, DOI: 10.1016/j.biortech.2007.08.022
NAKAKUBO, K ET AL.: "Dithiocarbamate-modified cellulose resins: A novel adsorbent for selective removal of arsenite from aqueous media", JOURNAL OF HAZARDOUS MATERIALS, vol. 380, 6 July 2019 (2019-07-06), pages 1 - 9, XP085843871, DOI: 10.1016/j.jhazmat.2019.120816
T AN, L. ET AL.: "Preferring cellulose of Eichhornia crassipes to prepare xanthogenate to other plant materials and its adsorption properties on copper", BIORESOURCE TECHNOLOGY, vol. 99, no. 10, 2008, pages 4460 - 4466, XP022526262, DOI: 10.1016/j.biortech.2007.08.022
NAKAKUBO, K ET AL.: "Dithiocarbamate-modified cellulose resins: A novel adsorbent for selective removal of arsenite from aqueous media", JOURNAL OF HAZARDOUS MATERIALS, vol. 380, 6 July 2019 (2019-07-06), pages 1 - 9, XP085843871, DOI: 10.1016/j.jhazmat.2019.120816
Attorney, Agent or Firm:
GOTO & CO. (JP)
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