Title:
FIBROUS CELLULOSE, FIBROUS CELLULOSE DISPERSION, AND FIBROUS CELLULOSE PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/215502
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing microfibrous cellulose capable of exhibiting exceptional dispersibility stability and exceptional coating suitability when added to a coating material. The present invention pertains to fibrous cellulose that has an ionic substituent and has a fiber width of 1000 nm or less, wherein: the amount of ionic substituent in the fibrous cellulose is 0.10-1.50 mmol/g (inclusive); the degree of polymerization of the fibrous cellulose is 150-515 (inclusive); and when the fibrous cellulose is dispersed in a dispersing solvent containing water and isopropanol to form a dispersion that has a viscosity at 23°C of 2500 mPa·s and is such that the mass ratio of water and isopropanol is 7:3, and the dispersion is stirred under prescribed stirring conditions, the viscosity change rate calculated by the following formula is within ±50%. Viscosity change rate (%)=(viscosity after stirring-viscosity before stirring)/viscosity before stirring×100
Inventors:
YAMANAKA MIO (JP)
OCHIAI TAKAHIRO (JP)
TANAKA AKIHIRO (JP)
OCHIAI TAKAHIRO (JP)
TANAKA AKIHIRO (JP)
Application Number:
PCT/JP2021/016315
Publication Date:
October 28, 2021
Filing Date:
April 22, 2021
Export Citation:
Assignee:
OJI HOLDINGS CORP (JP)
International Classes:
C08B15/04; C08B5/00; C08B5/14; C09D101/02; D21H11/20
Domestic Patent References:
| WO2019043782A1 | 2019-03-07 | |||
| WO2017047768A1 | 2017-03-23 | |||
| WO2018159473A1 | 2018-09-07 | |||
| WO2017175468A1 | 2017-10-12 |
Foreign References:
| JP2020063351A | 2020-04-23 |
Other References:
SEAGAL ET AL., TEXTILE RESEARCH JOURNAL, vol. 29, 1959, pages 786
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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