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Title:
POROUS CELLULOSE PARTICLES AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/024900
Kind Code:
A1
Abstract:
Provided are porous cellulose particles that have prescribed openings on the surface thereof and a prescribed particle size, and contain chitosan. Also provided is a production method for said particles. The porous cellulose particles contain chitosan and unsubstituted cellulose and in said particles: the chitosan content is no more than 20 mass% of the total 100 mass% of the unsubstituted cellulose and the chitosan; pores that are 0.05-5 μm in diameter are observed in an image obtained by observing the surfaces of the porous cellulose particles using a scanning electron microscope; and the ratio of porous cellulose particles with a particle size of 10-200 μm is at least 90 mass%.

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Inventors:
SHIBATA TORU (JP)
OKURA HIROMICHI (JP)
HIRABAYASHI YUKI (JP)
Application Number:
PCT/JP2020/029221
Publication Date:
February 11, 2021
Filing Date:
July 30, 2020
Export Citation:
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Assignee:
DAICEL CORP (JP)
International Classes:
C08J3/14; C08J9/28
Domestic Patent References:
WO2020121805A12020-06-18
Foreign References:
CN104530449A2015-04-22
CN109517212A2019-03-26
Other References:
JIAYI, YANG ET AL.: "Spherical nanocomposite particles prepared from mixed cellulose-chitosan solutions", CELLULOSE, vol. 23, no. 5, October 2016 (2016-10-01), pages 3105 - 3115, XP036047574, DOI: 10.1007/s10570-016-1029-4
CARBOHYDRATE POLYMERS, vol. 150, 2016, pages 216 - 226
CELLULOSE, vol. 21, 2014, pages 4405 - 4418
CARBOHYDRATE POLYMERS, vol. 54, no. 4, 2003, pages 425 - 43
Attorney, Agent or Firm:
TANAKA, Junya et al. (JP)
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