Title:
FILTRATION METHOD FOR CELLULOSE NANOFIBER DISPERSION, AND PRODUCTION PROCESS THEREFOR
Document Type and Number:
WIPO Patent Application WO/2017/078084
Kind Code:
A1
Abstract:
In order to provide cellulose nanofibers which are reduced in foreign-matter content and have high transparency, a cellulose nanofiber dispersion is filtered by a filtration method that comprises a step in which the cellulose nanofiber dispersion is filtered at an elevated pressure or a reduced pressure using at least any one of the following filtration methods.
(A) A filtration method in which a filter aid is used.
(B) A filtration method in which a filter medium selected from the group consisting of metallic porous filer media, inorganic-material porous filter media, and polymeric porous filter media is used.
(C) A filtration method in which both the filter aid and the filter medium are used.
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Inventors:
NAKAYAMA TAKESHI (JP)
SATO SHINJI (JP)
YAMAGUCHI MASATO (JP)
TAKAICHI SATOSHI (JP)
SATO SHINJI (JP)
YAMAGUCHI MASATO (JP)
TAKAICHI SATOSHI (JP)
Application Number:
PCT/JP2016/082639
Publication Date:
May 11, 2017
Filing Date:
November 02, 2016
Export Citation:
Assignee:
JUJO PAPER CO LTD (JP)
International Classes:
C08B15/08; B01D37/02; B82Y40/00; D21C9/18; D21H11/18
Foreign References:
JP2015117340A | 2015-06-25 | |||
JP2011132501A | 2011-07-07 | |||
JP2014180777A | 2014-09-29 | |||
JP2010156068A | 2010-07-15 | |||
JP2015183020A | 2015-10-22 |
Other References:
See also references of EP 3372618A4
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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