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US 2024/0254285 A1Published application
Acid dianhydride
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsDaiki WAKAHARA, Tatsuya HIKICHI, Nobuyoshi OHNISHI
Life of this patent
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Abstract
An acid dianhydride represented by the following formula (1): wherein R1 to R8 each independently represent a hydrogen atom or an organic group having 1 to 10 carbon atoms; and A represents the following structure.
Claims11
An acid dianhydride represented by the following formula (1):
- wherein R1 to R8 each independently represent a hydrogen atom or an organic group having 1 to 10 carbon atoms;
- and A represents the following structure.
A polyamic acid having a constituent unit represented by the following formula (3):
- wherein R1 to R8 each independently represent a hydrogen atom or an organic group having 1 to 10 carbon atoms;
- each A independently represents the following structure;
- and each B independently represents a divalent aromatic group or aliphatic group.
A polyimide having a constituent unit represented by the following formula (5):
- wherein R1 to R8 each independently represent a hydrogen atom or an organic group having 1 to 10 carbon atoms;
- each A independently represents the following structure;
- and each B independently represents a divalent aromatic group or aliphatic group.
Dependencies are inferred from the claim text.