Title:
METHOD FOR PRODUCING FIBROUS CELLULOSE AND METHOD FOR PRODUCING FIBROUS CELLULOSE COMPOSITE RESIN
Document Type and Number:
WIPO Patent Application WO/2022/030391
Kind Code:
A1
Abstract:
[Problem] To provide a method for producing fibrous cellulose that exhibits excellent heat resistance and an excellent resin-reinforcing effect and a method for producing a high-strength fibrous cellulose composite resin. [Solution] The method for producing fibrous cellulose has a step for substituting hydroxy groups in cellulose fibers by carbamate groups and a step for defibrating the cellulose fibers so that the average fiber width becomes 0.1-19 μm; the substitution step has a heating step; a drying step is provided prior to this heating step; and the substitution is carried out so that the 5% weight loss temperature when the cellulose fibers are heated in an absolutely dry state (5°C/min, 105→350°C) becomes 240°C or higher. Also, fibrous cellulose is obtained by the above method and this fibrous cellulose is mixed with resin in the method for producing a fibrous cellulose composite resin.
Inventors:
IMAI TAKAAKI (JP)
Application Number:
PCT/JP2021/028375
Publication Date:
February 10, 2022
Filing Date:
July 30, 2021
Export Citation:
Assignee:
DAIO SEISHI KK (JP)
International Classes:
C08B15/06; C08L1/00; C08L101/00
Domestic Patent References:
| WO2018230600A1 | 2018-12-20 | |||
| WO2018159473A1 | 2018-09-07 | |||
| WO2017094812A1 | 2017-06-08 | |||
| WO2019221256A1 | 2019-11-21 | |||
| WO2020203147A1 | 2020-10-08 |
Attorney, Agent or Firm:
NAGAI INTERNATIONAL PATENT BUREAU (JP)
Download PDF: