Title:
METHOD FOR PREPARING LIGNIN ADHESIVE AND PRODUCT THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/246524
Kind Code:
A1
Abstract:
Disclosed in the present invention are a method for preparing a lignin adhesive and a product thereof. The method comprises: treating a wood fiber raw material by using a mixed solution; after the treatment is finished, adding an organic solvent, stirring and carrying out solid-liquid separation; carrying out rotary evaporation on the obtained liquid to remove the organic solvent, and water-washing and drying a product to obtain the lignin adhesive. The present application can separate lignin in the wood fiber raw material to a large amount at a relatively low temperature, meanwhile, during the lignin separation process, the lignin undergoes a cross-linking reaction with a solvent in the system so as to form a lignin adhesive, namely, lignin separation and lignin adhesive forming are synchronously carried out. In addition, the method is simple, has low cost and high yield, and can achieve large-scale preparation of the lignin adhesive and efficient lignin separation.
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Inventors:
HUANG CHEN (CN)
LIANG FANGMIN (CN)
ZHOU XUELIAN (CN)
CHENG JINYUAN (CN)
ZHAN YUNNI (CN)
LIU XUZE (CN)
DENG YONGJUN (CN)
FANG GUIGAN (CN)
LIANG FANGMIN (CN)
ZHOU XUELIAN (CN)
CHENG JINYUAN (CN)
ZHAN YUNNI (CN)
LIU XUZE (CN)
DENG YONGJUN (CN)
FANG GUIGAN (CN)
Application Number:
PCT/CN2023/099361
Publication Date:
December 28, 2023
Filing Date:
June 09, 2023
Export Citation:
Assignee:
INST CHEMICAL IND FOREST PRODUCTS CAF (CN)
International Classes:
C09J197/00; C08H7/00; C09J197/02
Foreign References:
| CN115029104A | 2022-09-09 | |||
| CN113426388A | 2021-09-24 | |||
| US20040220368A1 | 2004-11-04 | |||
| US20140163142A1 | 2014-06-12 | |||
| US5021531A | 1991-06-04 | |||
| CN103031108A | 2013-04-10 | |||
| CN113307983A | 2021-08-27 | |||
| CN113666471A | 2021-11-19 | |||
| CN112778539A | 2021-05-11 |
Other References:
PANPAN XIE, LIAN HAILAN; SUN XIANG: "Modification of lignin-phenol-formaldehyde adhesive with Ch Cl/Glycerol deep-eutectic solvent ", JOURNAL OF FORESTRY ENGINEERING, CN, vol. 1, no. 4, 5 July 2016 (2016-07-05), CN , pages 107 - 113, XP093119844, ISSN: 2096-1359
MAJOVÁ VERONIKA, JABLONSKÝ MICHAL, LELOVSKÝ MAREK: "Delignification of unbleached pulp by ternary deep eutectic solvents", GREEN PROCESSING AND SYNTHESIS, vol. 10, no. 1, 1 January 2021 (2021-01-01), pages 666 - 676, XP093119846, ISSN: 2191-9550, DOI: 10.1515/gps-2021-0066
MAJOVÁ VERONIKA, JABLONSKÝ MICHAL, LELOVSKÝ MAREK: "Delignification of unbleached pulp by ternary deep eutectic solvents", GREEN PROCESSING AND SYNTHESIS, vol. 10, no. 1, 1 January 2021 (2021-01-01), pages 666 - 676, XP093119846, ISSN: 2191-9550, DOI: 10.1515/gps-2021-0066
Attorney, Agent or Firm:
NANJING ZHIZHUAN HUIYI INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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