Title:
METHOD FOR PRODUCING COMPOSITE PARTICLE, AND COMPOSITE PARTICLE
Document Type and Number:
WIPO Patent Application WO/2023/276585
Kind Code:
A1
Abstract:
The method for producing a composite particle comprises: a first step of fibrillating a cellulose starting material in a dispersion solvent to obtain a microfine-sized cellulose dispersion in which microfine-sized cellulose is dispersed; a second step of adding an organic onium compound or an amine to the microfine-sized cellulose dispersion to obtain a microfine-sized cellulose dispersion containing an ion-bonded microfine-sized cellulose in which an organic onium ion or ammonium ion is bound; a third step of stabilizing, as an emulsion in the ion-bonded microfine-sized cellulose dispersion, droplets containing a core particle precursor; and a fourth step of solidifying the core particle precursor to convert same into a core particle and obtain a composite particle in which the core particle is coated with a microfine-sized cellulose that is inseparably bonded to the core particle.
Inventors:
OBAYASHI YUMI (JP)
Application Number:
PCT/JP2022/022996
Publication Date:
January 05, 2023
Filing Date:
June 07, 2022
Export Citation:
Assignee:
TOPPAN INC (JP)
International Classes:
C08J3/16; C08F2/44
Domestic Patent References:
| WO2021002290A1 | 2021-01-07 | |||
| WO2018123985A1 | 2018-07-05 | |||
| WO2020170995A1 | 2020-08-27 | |||
| WO2019135384A1 | 2019-07-11 | |||
| WO2019208802A1 | 2019-10-31 |
Foreign References:
| JP2013014741A | 2013-01-24 | |||
| JP2010059304A | 2010-03-18 | |||
| JP2019038949A | 2019-03-14 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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