Title:
HYDROPHOBICALLY MODIFIED CELLULOSE FIBERS AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2024/048610
Kind Code:
A1
Abstract:
To provide a method that produces hydrophobically modified cellulose fibers efficiently using little hydrophobic modifier. The method for producing cellulose fibers that solves this problem comprises: a step that mixes cellulose fibers, a base, and water and prepares an aqueous solution having a concentration of cellulose fibers of from 0.5 mass% to 50 mass% and a concentration of base of from 1 mass% to 10 mass%; a step that adds from 0.2 equivalent to 10 equivalents of a cyclic amide compound relative to the anhydrous glucose units contained in the cellulose fibers to the aqueous solution and reacts the cellulose fibers with the cyclic amide compound; and a step that further adds an acid to the aqueous solution and neutralizes the base.
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Inventors:
KUDO TAKAHIRO (JP)
SATO TAKESHI (JP)
ARAI KEIZO (JP)
ITO MASAKI (JP)
SATO TAKESHI (JP)
ARAI KEIZO (JP)
ITO MASAKI (JP)
Application Number:
PCT/JP2023/031326
Publication Date:
March 07, 2024
Filing Date:
August 29, 2023
Export Citation:
Assignee:
KUREHA CORP (JP)
RESINOUS KASEI CO LTD (JP)
KUREHA TRADING CO LTD (JP)
RESINOUS KASEI CO LTD (JP)
KUREHA TRADING CO LTD (JP)
International Classes:
C08B15/06
Domestic Patent References:
| WO2021085056A1 | 2021-05-06 | |||
| WO2020022153A1 | 2020-01-30 |
Foreign References:
| EP2072530A1 | 2009-06-24 | |||
| JP2020015813A | 2020-01-30 | |||
| CN114395166A | 2022-04-26 | |||
| CN113621082A | 2021-11-09 | |||
| CN113527664A | 2021-10-22 |
Attorney, Agent or Firm:
WASHIDA & ASSOCIATES (JP)
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