Title:
CELLULOSE MICROFIBER AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2018/159473
Kind Code:
A1
Abstract:
[Problem] To provide a method for manufacturing a cellulose microfiber and a cellulose microfiber that address the problem of the cellulose microfiber obtained becoming yellow.
[Solution] In the method for manufacturing a cellulose microfiber, fibrillation is performed after adding an additive (A) formed from either or both of a phosphorous acid and a phosphorous acid metal salt and an additive (B) formed from either or both of urea and a urea derivative to cellulose fiber and heating and washing the same. The fiber width for the cellulose microfiber is 1 – 1000 nm. Some of the hydroxy groups in the cellulose fiber are substituted for by a functional group with a prescribed structural formula, and an ester of phosphorous acid is introduced.
Inventors:
MATSUSUE IKKO (JP)
Application Number:
PCT/JP2018/006617
Publication Date:
September 07, 2018
Filing Date:
February 23, 2018
Export Citation:
Assignee:
DAIO SEISHI KK (JP)
International Classes:
D21H11/18; C08B1/02; C08B5/00; C08B15/06
Domestic Patent References:
| WO2014185505A1 | 2014-11-20 |
Foreign References:
| JP2017031548A | 2017-02-09 | |||
| JP2013127141A | 2013-06-27 | |||
| JPS4610551B1 | 1971-03-17 | |||
| JP2017002231A | 2017-01-05 | |||
| JP2009293167A | 2009-12-17 | |||
| JP2013127141A | 2013-06-27 |
Other References:
See also references of EP 3591117A4
Attorney, Agent or Firm:
NAGAI INTERNATIONAL PATENT BUREAU (JP)
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