Title:
CELLULOSE MONOLITH PRODUCTION METHOD, AND CELLULOSE MONOLITH OBTAINED BY SAID PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2020/022524
Kind Code:
A1
Abstract:
The present invention provides a cellulose monolith production method and a white cellulose monolith comprising colored particles, the cellulose monolith production method characterized by: producing a cellulose monolth by bringing a cellulose acylate solution into contact with a medium containing water and a deacylation agent, thereby deacylating the cellulose acylate solution by solvent exchange with the water, or bringing a cellulose formate solution into contact with a medium containing water and a deformylation agent, thereby deformylating the cellulose formate solution by solvent exchange with the water; and heat treating the cellulose monolith in the presence of urea and phosphoric acid (salt).
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Inventors:
HARADA NOBUYUKI (JP)
NAKAMURA JUN-ICHI (JP)
NAKAMURA JUN-ICHI (JP)
Application Number:
PCT/JP2019/030107
Publication Date:
January 30, 2020
Filing Date:
July 25, 2019
Export Citation:
Assignee:
NIPPON CATALYTIC CHEM IND (JP)
International Classes:
C08B15/00; C08J9/28
Domestic Patent References:
| WO2016159334A1 | 2016-10-06 | |||
| WO2009060836A1 | 2009-05-14 |
Foreign References:
| JP2013185033A | 2013-09-19 | |||
| JP2016538367A | 2016-12-08 | |||
| JPS51125675A | 1976-11-02 | |||
| JPS61501995A | 1986-09-11 | |||
| JPH01188539A | 1989-07-27 | |||
| JP2017506678A | 2017-03-09 |
Other References:
KATSUURA, KAKUJI ET AL.: "STUDIES ON THE CELLULOSE PHOSPHATE (PART I", SEN'I GAKKAISHI, vol. 13, no. 1, 1957, pages 24 - 28, XP055681422
Attorney, Agent or Firm:
KAMO, Midori (JP)
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