Title:
POLYESTER IMIDE COPOLYMER, PREPARATION METHOD THEREFOR, AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2024/060583
Kind Code:
A1
Abstract:
Disclosed are a polyester imide copolymer, a preparation method therefor, and use thereof, which belong to the technical field of polymers. The structural formula of the polyester imide copolymer is represented by formula (I), wherein x, y and z are all integers of 1-100; R1 is an aromatic diamine monomer residue, and R2 is an aromatic acyl chloride monomer residue. The preparation method comprises the following steps: under the protection of inert gas, taking tert-butylhydroquinone bis(trimellitate anhydride), 4,4'-(hexafluoroisopropylidene)diphthalic anhydride, an aromatic diamine monomer and an aromatic acyl chloride monomer as polymerization monomers to carry out a polymerization reaction in an organic solvent to obtain a polyamide acid solution; and subjecting the polyamide acid solution to imidization and post-treatment to obtain a polyester imide copolymer. A thin film prepared from the polyester imide copolymer has a glass transition temperature of greater than or equal to 300 °C, a thermal expansion coefficient of less than or equal to 30 ppm/K, and the transmittance at 400 nm of greater than or equal to 70%, and the polyester imide copolymer has potential application in the optical field.
Inventors:
FANG XINGZHONG (CN)
WEN YAQING (CN)
CHEN GUOFEI (CN)
WEN YAQING (CN)
CHEN GUOFEI (CN)
Application Number:
PCT/CN2023/086559
Publication Date:
March 28, 2024
Filing Date:
April 06, 2023
Export Citation:
Assignee:
NINGBO INSTITUTE OF MATERIALS TECH & ENGINEERING CHINESE ACADEMY OF SCIENCES (CN)
International Classes:
C08G73/16; C08G73/10; C08J5/18
Foreign References:
| CN115386085A | 2022-11-25 | |||
| KR20180090671A | 2018-08-13 | |||
| CN112745504A | 2021-05-04 | |||
| CN102317352A | 2012-01-11 |
Other References:
WEN YAQING, LU CHUNSHAN, CHEN GUOFEI, FANG XINGZHONG: "‐phthaloyl chloride", POLYMER INTERNATIONAL, BARKING, GB, vol. 72, no. 5, 1 May 2023 (2023-05-01), GB , pages 520 - 531, XP093148824, ISSN: 0959-8103, DOI: 10.1002/pi.6498
MASATOSHI HASEGAWA ET AL.: "Optically transparent aromatic poly(ester imide)s with low coefficients of thermal expansion (1). Self-orientation behavior during solution casting process and substituent effect", POLYMER, vol. 74, 21 July 2015 (2015-07-21), XP055246860, DOI: 10.1016/j.polymer.2015.07.026
MASATOSHI HASEGAWA ET AL.: "Optically transparent aromatic poly(ester imide)s with low coefficients of thermal expansion (1). Self-orientation behavior during solution casting process and substituent effect", POLYMER, vol. 74, 21 July 2015 (2015-07-21), XP055246860, DOI: 10.1016/j.polymer.2015.07.026
Attorney, Agent or Firm:
HANGZHOU TIANQIN INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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