Title:
SOLVENT-FREE LIGNIN-BASED POLYURETHANE ELASTOMER CAPABLE OF BEING REPEATEDLY PROCESSED AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/045981
Kind Code:
A1
Abstract:
Disclosed in the present invention are a solvent-free lignin-base polyurethane elastomer capable of being repeatedly processed and a preparation method therefor. According to the present invention, lignin with a specific molecular weight and a short-chain polyol are prepared into a lignin-polyol mixed dispersion liquid, and then the dispersion liquid is reacted with a polyurethane prepolymer to prepare a lignin-based polyurethane elastomer. According to the present invention, the lignin with a specific molecular weight is extracted by using an organic solvent with a low boiling point and low toxicity, which is suitable for the industrial large-scale production of low-molecular-weight lignin. The low-molecular-weight lignin has a high reaction activity and better compatibility with a polyurethane matrix, the lignin-based polyurethane elastomer is synthesized by using a solvent-free method, such that the introduction of a high-boiling-point or volatile toxic organic solvent in the synthesis process of the polyurethane elastomer is avoided, and the synthesis process is green and environmentally friendly and has industrial application prospects. The solvent-free lignin-based polyurethane elastomer of the present invention can be recycled multiple times and repeatedly processed and utilized, and the problems whereby a traditional thermosetting lignin-based polyurethane elastomer is difficult to recycle and cannot be reprocessed are overcome.
Inventors:
LIU WEIFENG (CN)
QIU XUEQING (CN)
HUANG JINHAO (CN)
YANG DONGJIE (CN)
LOU HONGMING (CN)
PANG YUXIA (CN)
QIN YANLIN (CN)
OUYANG XINPING (CN)
LIN XULIANG (CN)
QIU XUEQING (CN)
HUANG JINHAO (CN)
YANG DONGJIE (CN)
LOU HONGMING (CN)
PANG YUXIA (CN)
QIN YANLIN (CN)
OUYANG XINPING (CN)
LIN XULIANG (CN)
Application Number:
PCT/CN2022/120288
Publication Date:
March 30, 2023
Filing Date:
September 21, 2022
Export Citation:
Assignee:
UNIV SOUTH CHINA TECH (CN)
UNIV GUANGDONG TECHNOLOGY (CN)
UNIV GUANGDONG TECHNOLOGY (CN)
International Classes:
C08G18/64; C08G18/10; C08G18/32; C08G18/48; C08G18/66; C08H7/00
Foreign References:
| CN113817130A | 2021-12-21 | |||
| CN107698779A | 2018-02-16 | |||
| CN109485824A | 2019-03-19 | |||
| CN103946229A | 2014-07-23 | |||
| CN106750362A | 2017-05-31 |
Other References:
WANG YUN-YAN, WYMAN CHARLES E., CAI CHARLES M., RAGAUSKAS ARTHUR J.: "Lignin-Based Polyurethanes from Unmodified Kraft Lignin Fractionated by Sequential Precipitation", ACS APPLIED POLYMER MATERIALS, vol. 1, no. 7, 12 July 2019 (2019-07-12), pages 1672 - 1679, XP093055518, ISSN: 2637-6105, DOI: 10.1021/acsapm.9b00228
"Master's Thesis", 25 April 2019, China, article WANG, SHENGYU: "Lignin-Based Polyurethane from Elastic Materials:Preparation, Structures, and Performances", pages: 1 - 89, XP009544886, DOI: 10.27151/d.cnki.ghnlu.2019.001121
CHEN LIN, GUO XIN; XU AIRONG; ZHANG JUN: "Dissolving Behavior of Lignin in Polyethylene Glycol Aqueous Solvent", [HENAN-KEJI-DAXUE-XUEBAO / ZIRAN-KEXUE-BAN] HENAN-KEJI-DAXUE-XUEBAO = JOURNAL OF HENAN UNIVERSITY OF SCIENCE AND TECHNOLOGY, HENAN-KEJI-DAXUE, CN, vol. 40, no. 1, 15 January 2020 (2020-01-15), CN , XP093055521, ISSN: 1672-6871, DOI: 10.15926/j.cnki.issn1672-6871.2019.01.018
MA XIAOZHEN, CHEN JING, ZHU JIN, YAN NING: "LigninâBased Polyurethane: Recent Advances and Future Perspectives", MACROMOLECULAR RAPID COMMUNICATIONS, WILEY-VCH, DE, vol. 42, no. 3, 1 February 2021 (2021-02-01), DE , pages 2000492, XP093055523, ISSN: 1022-1336, DOI: 10.1002/marc.202000492
"Master's Thesis", 25 April 2019, China, article WANG, SHENGYU: "Lignin-Based Polyurethane from Elastic Materials:Preparation, Structures, and Performances", pages: 1 - 89, XP009544886, DOI: 10.27151/d.cnki.ghnlu.2019.001121
CHEN LIN, GUO XIN; XU AIRONG; ZHANG JUN: "Dissolving Behavior of Lignin in Polyethylene Glycol Aqueous Solvent", [HENAN-KEJI-DAXUE-XUEBAO / ZIRAN-KEXUE-BAN] HENAN-KEJI-DAXUE-XUEBAO = JOURNAL OF HENAN UNIVERSITY OF SCIENCE AND TECHNOLOGY, HENAN-KEJI-DAXUE
MA XIAOZHEN, CHEN JING, ZHU JIN, YAN NING: "LigninâBased Polyurethane: Recent Advances and Future Perspectives", MACROMOLECULAR RAPID COMMUNICATIONS, WILEY-VCH, DE, vol. 42, no. 3, 1 February 2021 (2021-02-01), DE , pages 2000492, XP093055523, ISSN: 1022-1336, DOI: 10.1002/marc.202000492
Attorney, Agent or Firm:
GUANGZHOU HUAXUE INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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