Title:
METHOD FOR PREPARING FIBERS OF IMIDE COPOLYMER FROM AMIC ACID COPOLYMER, AND FIBERS PREPARED THEREFROM
Document Type and Number:
WIPO Patent Application WO/2024/067260
Kind Code:
A1
Abstract:
A method for preparing fibers of an imide copolymer (A) from an amic acid copolymer (B), the method comprising: (I) spinning an aqueous solution of an amic acid copolymer (B) to obtain fibers of the amic acid copolymer (B), and (II) imidizing the fibers of the amic acid copolymer (B) obtained in step (I) to obtain fibers of an imide copolymer (A), wherein the imide copolymer (A) is an imide copolymer having an imide pendant group. The present disclosure further relates to fibers obtained by means of the method and an article obtained from the fibers. The method is simple, efficient, economical and environmentally friendly, and can be used for continuously preparing imide copolymer fibers.
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Inventors:
YANG WANTAI (CN)
HUANG YANBIN (CN)
CHANG TIANXIAO (CN)
CHEN MINGSEN (CN)
HUANG YANBIN (CN)
CHANG TIANXIAO (CN)
CHEN MINGSEN (CN)
Application Number:
PCT/CN2023/119808
Publication Date:
April 04, 2024
Filing Date:
September 19, 2023
Export Citation:
Assignee:
UNIV TSINGHUA (CN)
International Classes:
D01F8/10; D01F6/28; D01F11/06
Foreign References:
| CN115652474A | 2023-01-31 | |||
| CN101121766A | 2008-02-13 | |||
| US4889896A | 1989-12-26 | |||
| CN114891465A | 2022-08-12 | |||
| CN106591998A | 2017-04-26 | |||
| US4933395A | 1990-06-12 |
Attorney, Agent or Firm:
ZHONGZI LAW OFFICE (CN)
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