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US 11,898,010 B2Granted
Polyimides, ketone-containing alicyclic dianhydrides and applications thereof
AssigneeNational Taiwan University of Science and Technology
InventorsJyh-Chien Chen, Hsiang Jung Lee, Kai-Cheng Zhong
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Abstract
Present invention is related to a polyimide of formula as following: and a ketone-containing alicyclic dianhydride of formula as following: wherein: R1, R2, R3, R4 denote hydrogen atom or carbon containing functional group with carbon number at a range of 1-4; R5 denotes diamine group; and n equals to any positive integer.
Claims5
A polyimide comprises at least one of below repeated structures as formula (1) and formula (2):
- wherein in formula (1) or in formula (2):
- R1, R2, R3 and R4 represent hydrogen atom and/or carbon containing functional group including C1 to C4 alkanes;
- R5 represents aliphatic group or aromatic group;
- and
- n represents any positive integer.
2 more elements
Dependencies are inferred from the claim text.