Title:
POLYIMIDE, POLYIMIDE VARNISH, AND POLYIMIDE THIN FILM
Document Type and Number:
WIPO Patent Application WO/2023/027031
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a polyimide material that has superior heat resistance as well as superior optical characteristics and dielectric characteristics, while having a resource of biological origin used as a raw material therefor. A polyimide that has a repeating unit represented by general formula (1) and has a glass transition temperature (Tg) of 210°C or greater as calculated by thermomechanical analysis is provided as a means of solving this problem. (In the formula, each R1 independently represents a C1-6 straight-chain or branched-chain alkyl group, a C5 or 6 cyclic alkyl group, a C1-6 straight-chain or branched-chain alkoxy group, a C5 or 6 cyclic alkoxy group, a C6-8 aryl group, a C6-8 aryloxy group, a C1-6 straight-chain or branched-chain halogenated alkyl group, or a halogen atom; each n independently represents 0 or an integer from 1 to 3; and A represents a divalent group that is represented by general formula 5, or a divalent organic group that includes a C4-30 cyclic aliphatic group.) (In the formula, each R2 independently represents a C1-6 straight-chain or branched-chain alkyl group, a C5 or 6 cyclic alkyl group, a C1-6 straight-chain or branched-chain alkoxy group, a C5 or 6 cyclic alkoxy group, a C6-8 aryl group, a C6-8 aryloxy group, a C1-6 straight-chain or branched-chain halogenated alkyl group, or a halogen atom; each m independently represents 0 or an integer from 1 to 4; p, q, and r represent 0 or 1; X represents a direct bond, an oxygen atom, a sulfur atom, a sulfonyl group (–SO2–), a carbonyl group (–CO–), an amido group (–NHCO–), an ester group (–OCO–), a C1-15 alkylidene group, a C2-15 fluorine-including alkylidene group, a C5-15 cycloalkylidene group, a phenylene group, or a fluorenylidene group; and each * represents a bond location.)
Inventors:
ANDO SHINJI (JP)
SAWADA RIRIKA (JP)
IMAI RYOTA (JP)
YAJIMA KAZUHISA (JP)
SAWADA RIRIKA (JP)
IMAI RYOTA (JP)
YAJIMA KAZUHISA (JP)
Application Number:
PCT/JP2022/031577
Publication Date:
March 02, 2023
Filing Date:
August 22, 2022
Export Citation:
Assignee:
TOKYO INST TECH (JP)
HONSHU CHEMICAL IND (JP)
HONSHU CHEMICAL IND (JP)
International Classes:
C08G73/10; C08G73/16
Domestic Patent References:
| WO2020058460A1 | 2020-03-26 |
Foreign References:
| CN101648958A | 2010-02-17 | |||
| US20200116291A1 | 2020-04-16 | |||
| JP2014172911A | 2014-09-22 |
Other References:
BENNOUR HAYTHEM, SAID ZINA MONGIA, MEDIMAGH RAOUF: "Synthesis and characterization of novel organosoluble biosourced poly(ester imide)s based on 1,4:3,6 -dianhydrohexitols suited for adhesives applications", JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY, TAYLOR & FRANCIS, GB, vol. 32, no. 17, 26 March 2018 (2018-03-26), GB , pages 1886 - 1898, XP009543799, ISSN: 0169-4243, DOI: 10.1080/01694243.2018.1453227
Attorney, Agent or Firm:
YAMADA, Yasuyuki et al. (JP)
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