Title:
METHOD FOR EXTRACTING LIGNIN FROM WOODY BIOMASS AND USING LIGNIN AS ADHESIVE
Document Type and Number:
WIPO Patent Application WO/2023/208015
Kind Code:
A1
Abstract:
A method for extracting active lignin from a woody biomass and using the lignin as a wood adhesive. A modifier is added in a lignin extraction process, so that extracted lignin has self-crosslinking performance during hot pressing to be used as an adhesive. After the lignin is modified, by using the characteristic that lignin is insoluble in water, the remaining modifier in a solvent is removed by using steps such as distillation and water separation, thereby avoiding release of free modifiers such as formaldehyde in a cross-linking process of the lignin. According to the method, a natural adhesive can be directly used to replace an adhesive of a petrochemical source, such as phenolic resin and urea-formaldehyde resin, the problem that it is difficult to use lignin in a high value-added manner in biorefinery industry is solved, the development of biomass chemical industry can be effectively promoted, and a brand-new green environmentally-friendly adhesive is provided.
Inventors:
LI SHUAI (CN)
LUO XIAOLIN (CN)
YANG GUANGXU (CN)
LUO XIAOLIN (CN)
YANG GUANGXU (CN)
Application Number:
PCT/CN2023/090745
Publication Date:
November 02, 2023
Filing Date:
April 26, 2023
Export Citation:
Assignee:
SHANDONG BAIWO BIOTECHNOLOGY CO LTD (CN)
International Classes:
C09J197/00; C08H7/00
Foreign References:
| CN114736652A | 2022-07-12 | |||
| CN115746784A | 2023-03-07 | |||
| CN114292610A | 2022-04-08 | |||
| US5021531A | 1991-06-04 | |||
| CN102634308A | 2012-08-15 | |||
| JPH01158022A | 1989-06-21 |
Attorney, Agent or Firm:
BEIJING SHILAN INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
Download PDF: