Title:
FIBROUS CELLULOSE PRODUCTION METHOD AND FIBROUS CELLULOSE
Document Type and Number:
WIPO Patent Application WO/2017/170908
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a microfibrous cellulose production method that allows production of a microfibrous cellulose having phosphate groups efficiently and with a high yield. The present invention relates to a production method for a fibrous cellulose having a fiber width of up to 1000 nm, the production method comprising: a step (A) for obtaining crosslinked phosphorylated cellulose fibers by introducing phosphate groups into cellulose fibers and forming a crosslinked structure with the phosphate groups; a step (B) for obtaining crosslink-broken phosphorylated cellulose fibers by breaking a part or all of the crosslinked structure; and a step (C) for obtaining a fibrous cellulose having a fiber width of up to 1000 nm by performing a mechanical processing on the crosslink-broken phosphorylated cellulose fibers, wherein a crosslinked structure of 0.05-2.0 mmol/g is formed in the step (A), and the step (B) is a step in which hydrolyzation of the crosslinked structure is conducted in an aqueous solvent of at least pH3.
Inventors:
NOGUCHI YUICHI (JP)
HOMMA IKUE (JP)
MATSUBARA YUSUKE (JP)
HOMMA IKUE (JP)
MATSUBARA YUSUKE (JP)
Application Number:
PCT/JP2017/013352
Publication Date:
October 05, 2017
Filing Date:
March 30, 2017
Export Citation:
Assignee:
OJI HOLDINGS CORP (JP)
International Classes:
C08B5/00; D21H11/18; D21H15/02
Domestic Patent References:
| WO2014185505A1 | 2014-11-20 |
Foreign References:
| JP2008024778A | 2008-02-07 | |||
| JP2008034556A | 2008-02-14 |
Other References:
See also references of EP 3438132A4
Attorney, Agent or Firm:
SIKS & CO. (JP)
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