发明名称 |
SOLVENT SOLUBLE POLYIMIDE COPOLYMER |
摘要 |
Provided is a solvent-soluble polyimide copolymer which satisfies storage stability and heat resistance at high levels and has excellent utility. The polyimide copolymer is obtained by copolymerizing (A) 3,3′,4,4′-biphenyltetracarboxylic dianhydride with (B) diamine(s) and/or diisocyanate(s) and has no glass transition temperature observed at lower than 500° C. The component (B) is preferably at least one diamine and/or diisocyanate represented by the following Formulae (1) to (3):;;(wherein, X represents an amino group or an isocyanate group; R1 to R8 each independently represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; and at least one of the R1 to R8 is not a hydrogen atom). |
申请公布号 |
US2016159985(A1) |
申请公布日期 |
2016.06.09 |
申请号 |
US201414897511 |
申请日期 |
2014.04.17 |
申请人 |
SOMAR CORPORATION |
发明人 |
TAKIUE Yoshiyasu |
分类号 |
C08G73/10 |
主分类号 |
C08G73/10 |
代理机构 |
|
代理人 |
|
主权项 |
1. A solvent-soluble polyimide copolymer obtained by copolymerizing (A) 3,3′,4,4′-biphenyltetracarboxylic dianhydride and (B) diamine(s) and/or diisocyanate(s),
said solvent-soluble polyimide copolymer having no glass transition temperature observed at lower than 500° C. |
地址 |
Tokyo JP |