Title:
METHOD FOR PRODUCING CELLULOSE BEADS
Document Type and Number:
WIPO Patent Application WO/2023/032800
Kind Code:
A1
Abstract:
Provided is a method for producing cellulose beads such as porous cellulose beads, the method further facilitating handling, washing, removal, etc., of a dispersion medium and enabling cellulose beads having a minute particle size and a narrow particle size distribution to be easily and inexpensively produced. This problem is solved by a cellulose bead production method comprising: a) a step for preparing a dispersion medium containing a surfactant and an organic solvent; b) a step for causing a cellulose-dissolved solution containing cellulose and an alkaline aqueous solution to contact the dispersion medium; and c) a step for adding an acid to an emulsion containing the cellulose-dissolved solution obtained in step b), wherein the organic solvent has a boiling point of 105°C or lower.
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Inventors:
YAMATO MITSUGU (JP)
HAKAMATA TOMOYOSHI (JP)
NAKAYAMA KATSUNOBU (JP)
HAKAMATA TOMOYOSHI (JP)
NAKAYAMA KATSUNOBU (JP)
Application Number:
PCT/JP2022/031989
Publication Date:
March 09, 2023
Filing Date:
August 25, 2022
Export Citation:
Assignee:
MITSUI CHEMICALS TOHCELLO INC (JP)
International Classes:
C08J3/14; A61K8/04; A61K8/73; A61Q19/00; C08B15/00
Domestic Patent References:
| WO2019220866A1 | 2019-11-21 | |||
| WO2016167268A1 | 2016-10-20 | |||
| WO2020121805A1 | 2020-06-18 |
Foreign References:
| JP2016153449A | 2016-08-25 | |||
| JP2021014567A | 2021-02-12 | |||
| JPH10195103A | 1998-07-28 |
Attorney, Agent or Firm:
ASAMURA IP P.C. (JP)
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