Title:
IONIC FUNCTIONAL GROUP-INTRODUCED CELLULOSE NANOCRYSTALS AND METHOD OF PRODUCING THE SAME, AND DISPERSION LIQUIDS, SHEETS, AND POWDERS CONTAINING THE SAME
Document Type and Number:
Japanese Patent JP2022132151
Kind Code:
A
Abstract:
To provide cellulose nanocrystals which, when made into aqueous dispersion liquids, have low viscosity, are highly transparent, have excellent salinity tolerance, and have a large amount of ionic functional groups introduced thereinto, and a method of producing the same, and further to provide dispersion liquids, sheets, and powders containing the cellulose nanocrystals.SOLUTION: Provided is a method of producing an ionic functional group-introduced cellulose nanocrystal, comprising the following steps A to C in this order. Step A: Ionic functional group introduction step of introducing ionic functional groups into cellulose fibers. Step B: Hydrolysis step of hydrolyzing the cellulose fibers, into which ionic functional groups are introduced, with an acidic aqueous solution having a concentration of 5 mol/L or more. C: Fibrillation step of fibrillating cellulose fibers into which hydrolyzed ionic functional groups are introduced.SELECTED DRAWING: None
Inventors:
NOGUCHI YUICHI
SAITO MASATO
SAITO MASATO
Application Number:
JP2022024931A
Publication Date:
September 07, 2022
Filing Date:
February 21, 2022
Export Citation:
Assignee:
OJI HOLDINGS CORP
International Classes:
C08B5/00; C08B5/14; D21H11/18; D21H15/02
Attorney, Agent or Firm:
Patent Attorney Corporation Otani Patent Office