Title:
METHOD FOR PRODUCING LIGNIN-MODIFIED RESOL-TYPE PHENOL RESIN
Document Type and Number:
WIPO Patent Application WO/2023/234199
Kind Code:
A1
Abstract:
A method for producing a lignin-modified resol-type phenol resin, the method comprising: a step for obtaining a first mixture containing a phenol, water, and a lignin such that the mass ratio of phenol:water between the phenol and the water is 1:0.03 to 1:1.5; a step for obtaining a second mixture by heating the first mixture at a temperature of 70-120°C at a pH of 7 or lower to dissolve the lignin in the phenol and in the water; a step for obtaining a third mixture by adding, to the second mixture, an aldehyde and a basic catalyst and adjusting the pH thereof to 7.5-12; and a step for obtaining the lignin-modified resol-type phenol resin by heating the third mixture at a temperature of 60-105°C to cause the lignin, the phenol, and the aldehyde to react in the presence of the basic catalyst.
More Like This:
Inventors:
MURAI TAKETOSHI (JP)
Application Number:
PCT/JP2023/019654
Publication Date:
December 07, 2023
Filing Date:
May 26, 2023
Export Citation:
Assignee:
SUMITOMO BAKELITE CO (JP)
International Classes:
C08G8/00; C08G8/20
Domestic Patent References:
| WO2021249899A1 | 2021-12-16 |
Foreign References:
| JP6588433B2 | 2019-10-09 |
Attorney, Agent or Firm:
HAYAMI Shinji (JP)
Download PDF:
Previous Patent: THROTTLE GRIP DEVICE
Next Patent: VIDEO DECODING DEVICE, VIDEO ENCODING DEVICE, AND ANGLE MODE DERIVATION DEVICE
Next Patent: VIDEO DECODING DEVICE, VIDEO ENCODING DEVICE, AND ANGLE MODE DERIVATION DEVICE