Title:
ポリイミド、ポリイミドワニス、ポリイミド薄膜
Document Type and Number:
Japanese Patent JP7406058
Kind Code:
B2
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:
Shinji Ando
Ririka Sawada
Ryota Imai
Osho Yajima
Ririka Sawada
Ryota Imai
Osho Yajima
Application Number:
JP2023040554A
Publication Date:
December 27, 2023
Filing Date:
March 15, 2023
Export Citation:
Assignee:
National University Corporation Tokyo Institute of Technology
Honshu Chemical Industry Co., Ltd.
Honshu Chemical Industry Co., Ltd.
International Classes:
C08G73/10
Domestic Patent References:
| JP2014172911A |
Foreign References:
| CN101648958A | ||||
| US20200116291 | ||||
| WO2020058460A1 |
Other References:
BENNOUR H. et al.,Synthesis and characterization of novel organosoluble biosourced poly(ester imide)s based on 1,4:3,6,Journal of Adhesion Science and Technology,2018年03月26日,Vol. 32 No.17,p. 1886-1898,DOI: 10.1080/01694243.2018.1453227
Attorney, Agent or Firm:
Yasuyuki Yamada
Chikako Ohta
Chikako Ohta