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Title:
CELLULOSE ACETATE FLAKES, AND GOLD RECOVERY METHOD AND CONCENTRATION METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2024/095994
Kind Code:
A1
Abstract:
These cellulose acetate flakes are composed of cellulose acetate having a degree of acetyl substitution of 0.80-2.90, the average space velocity SV derived through a prescribed method being more than 1.0 h−1 to 120 h−1. This gold recovery method includes filling a cylindrical container with the cellulose acetate flakes to produce a filled column, and passing a gold-ion-containing liquid through the filled column to adsorb the gold ions to the cellulose acetate flakes.

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WO/2013/031444CELLULOSE NANOFIBERS AND METHOD FOR PRODUCING SAME, COMPOSITE RESIN COMPOSITION, MOLDED BODY
WO/2006/033362CELLULOSE ESTER AND PROCESS FOR PRODUCTION THEREOF
Inventors:
SAKATA YUMI (JP)
SEKI YOSHIE (JP)
TANAKA KOUJI (JP)
Application Number:
PCT/JP2023/039200
Publication Date:
May 10, 2024
Filing Date:
October 31, 2023
Export Citation:
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Assignee:
DAICEL CORP (JP)
International Classes:
C08B3/06; B01J20/24; C22B3/24; C22B11/00
Domestic Patent References:
WO2014142166A12014-09-18
WO2018139319A12018-08-02
WO2021245832A12021-12-09
Foreign References:
JP2018119051A2018-08-02
JP2021161320A2021-10-11
JP2018119052A2018-08-02
JPH06157601A1994-06-07
JP2000212201A2000-08-02
JP2000212202A2000-08-02
JP2014109064A2014-06-12
JPS63100140A1988-05-02
JPS648227A1989-01-12
JP2016040032A2016-03-24
Attorney, Agent or Firm:
ARCO PATENT & TRADEMARK ATTORNEYS (JP)
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