发明名称 |
Novel polyimide compositions and novel acid dianhydrides to be used therein |
摘要 |
Novel polyimides substituted by a substituent having an alkyl or fluoroalkyl group and having reduced water absorption; a process for producing these novel polyimides; and novel acid dianhydrides to be used in the production thereof. A polyimide containing a structure represented by the following general formula (I): wherein X1 represents a tetravalent organic group having a substituent -R1AR2 (wherein A represents a divalent linkage group; R1 represents a single bond or a C1-3 alkylene group; and R2 represents a C1-25 alkyl group or a fluoroalkyl group); and Y represents a divalent organic group.
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申请公布号 |
US2002055610(A1) |
申请公布日期 |
2002.05.09 |
申请号 |
US20010024392 |
申请日期 |
2001.12.21 |
申请人 |
KANEKA CORPORATION |
发明人 |
OKADA KOJI;HARA SHOJI |
分类号 |
C07D307/89;C08G73/10;(IPC1-7):C08G73/10 |
主分类号 |
C07D307/89 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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