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公开(公告)号:US10513582B2
公开(公告)日:2019-12-24
申请号:US15306394
申请日:2015-04-21
摘要: A tetracarboxylic dianhydride, which is a compound represented by the following general formula (1): [in the formula (1), A represents a divalent aromatic group in which the number of carbon atoms forming an aromatic ring is 6 to 30 or the like, and multiple R1s each independently represent a hydrogen atom or the like].
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公开(公告)号:US11667754B2
公开(公告)日:2023-06-06
申请号:US16484886
申请日:2018-02-08
IPC分类号: C07D307/93 , C09D179/08 , C08G73/10 , C07C69/753
CPC分类号: C08G73/10 , C07C69/753 , C07D307/93
摘要: A tetracarboxylic dianhydride includes: at least one acid dianhydride (A) selected from the group consisting of compounds each having an endo/exo type three-dimensional structure represented by a particular general formula and their enantiomeric compounds each having an exo/endo type three-dimensional structure; and/or an acid dianhydride (B) having an endo/endo type three-dimensional structure represented by a particular general formula, wherein a content of the acid dianhydride (B) in a total amount of the acid dianhydrides (A) and (B) is 30 to 100% by mole in a mole ratio.
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