Title:
繊維状セルロースの製造方法及び繊維状セルロース
Document Type and Number:
Japanese Patent JP6394775
Kind Code:
B2
Abstract:
It is an object of the present invention to provide a method for producing ultrafine fibrous cellulose, which is capable of efficiently obtaining ultrafine fibrous cellulose having phosphoric acid groups with a high yield. The present invention relates to a method for producing fibrous cellulose having a fiber width of 1000 nm or less, comprising: a (A) of introducing phosphoric acid groups into cellulose fibers to form crosslinked structures via the phosphoric acid groups, thereby obtaining crosslinked phosphorylated cellulose fibers, a (B) of breaking some or all of the crosslinked structures to obtain crosslink-broken phosphorylated cellulose fibers, and a (C) of performing a mechanical treatment on the crosslink-broken phosphorylated cellulose fibers to obtain fibrous cellulose having a fiber width of 1000 nm or less, wherein, in the (A), crosslinked structures in an amount of 0.05 mmol/g or more and 2.0 mmol/g or less are formed, and the (B) is a step of performing the hydrolysis of the crosslinked structures in an aqueous solvent with pH 3 or more.
Inventors:
Yuichi Noguchi
Ikue Honma
Yusuke Matsubara
Ikue Honma
Yusuke Matsubara
Application Number:
JP2017230044A
Publication Date:
September 26, 2018
Filing Date:
November 30, 2017
Export Citation:
Assignee:
Oji Holdings Co., Ltd.
International Classes:
C08B5/00; D21H11/18; D21H15/02
Foreign References:
| WO2014185505A1 |
Attorney, Agent or Firm:
Patent Service Corporation Patent Office Sykes