Title:
繊維状セルロースの製造方法、繊維状セルロース分散液及びシート
Document Type and Number:
Japanese Patent JP7327340
Kind Code:
B2
Abstract:
The present invention is intended to provide ultrafine cellulose fibers capable of enhancing the transparency of an ultrafine cellulose fiber-dispersed solution having phosphorous acid groups. The present invention relates to a method for producing cellulose fibers, comprising: mixing a compound having a phosphorous acid group and/or a salt thereof and urea and/or a urea derivative into a cellulose raw material to obtain a phosphorous acid esterified cellulose raw material, and performing a fibrillation treatment on the phosphorous acid esterified cellulose raw material to obtain cellulose fibers having a fiber width of 1000 nm or less and having a phosphorous acid group, wherein, in obtaining the phosphorous acid esterified cellulose raw material, the decomposition percentage of the urea and/or the urea derivative is set to be 90% or less.
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Inventors:
Yuichi Noguchi
Zhao Mengfu
Todoroki Yusuke
Zhao Mengfu
Todoroki Yusuke
Application Number:
JP2020168309A
Publication Date:
August 16, 2023
Filing Date:
October 05, 2020
Export Citation:
Assignee:
Oji Holdings Co., Ltd.
International Classes:
C08B5/00; D01F2/00; D21H11/20
Domestic Patent References:
| JP2018141249A | ||||
| JP2016527330A | ||||
| JP2018171126A | ||||
| JP2017066272A | ||||
| JP46010551B2 |
Foreign References:
| WO2019021619A1 | ||||
| WO2018212012A1 | ||||
| WO2014185505A1 | ||||
| US20110196139 |
Attorney, Agent or Firm:
Sykes Patent Attorney Corporation
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