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Title:
NOVEL CELLULOSE NANOFIBERS, AND PRODUCTION METHOD OF DRIED PRODUCT THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/235669
Kind Code:
A1
Abstract:
The present invention provides novel cellulose nanofibers which have excellent dispersibility in an organic solvent. More specifically, the present invention is of novel cellulose nanofibers obtained by introducing a carboxyl group and a quaternary organic onium ion as the counterion of said carboxyl group wherein, if the quaternary organic onium ion together with a bromide ion forms a salt, the melting point of said salt, measured in accordance with JIS-K7121, is less than or equal to 100°C, and the dispersion yield of the cellulose nanofibers is higher in the case that the dispersion medium is an organic solvent than in the case that the dispersion medium is water.

Inventors:
SAITO TSUGUYUKI (JP)
FUJISAWA SHUJI (JP)
HIROMATSU YUKI (JP)
SAKUMA WATARU (JP)
Application Number:
JP2020/020240
Publication Date:
November 26, 2020
Filing Date:
May 22, 2020
Export Citation:
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Assignee:
UNIV TOKYO (JP)
International Classes:
C08B15/04; C08L1/00; D06M13/463
Domestic Patent References:
WO2013077354A12013-05-30
Foreign References:
JP2010059304A2010-03-18
JP2016183329A2016-10-20
Other References:
JUN, DANIEL ET AL.: "TLC Identification of Benzalkonium Bromide Homologs", JOURNAL OF PLANAR CHROMATOGRAPHY--MODERN TLC, vol. 20, no. 4, September 2007 (2007-09-01), pages 283 - 285, ISSN: 0933-4173
KUCA, KAMIL ET AL.: "A general method for the quaternization of N, N-dimethyl benzylamines with long chain n-alkylbromides", JOURNAL OF APPLIED BIOMEDICINE, vol. 2, 2004, pages 195 - 198, XP055762897, ISSN: 1214- 0287
BENITEZ, ALEJANDRO J. ET AL.: "Counterion Size and Nature Control Structural and Mechanical Response in Cellulose Nanofibril Nanopapers", BIOMACROMOLECULES, vol. 18, no. 5, 8 May 2017 (2017-05-08), pages 1642 - 1653, XP055762890, ISSN: 1526-4602
SHIMIZU, KOKI ET AL.: "The invention of nanocomposite materials using cellulose aerogel", RESEARCH PRESENTATION PROCEEDINGS AND LECTURE ABSTRACTS OF ANNUAL MEETING OF THE TEXTILE MACHINERY SOCIETY OF JAPAN, 2016, pages 194 - 195
Attorney, Agent or Firm:
NAKAMURA Yukitaka et al. (JP)
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