Synthesis of optically transparent copolyimides based on alicyclic and fluorine-containing diamine

It was shown that copolyimides based on adamantane-containing diamine and dianhydrides of 2,3,3′,4′-biphenyltetracarboxylic acid (a-BPDA) and 5,5′-(1,1,1,3,3,3-hexafluoropropane-2,2-diyl)bis(2-benzofuran-1,3-dione) (6FDA) are characterized by good thermal-oxidative properties ( T 5% = 465–485 °C) an...

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Bibliographic Details
Published in:Russian chemical bulletin 2024-07, Vol.73 (7), p.2023-2027
Main Authors: Novakov, I. A., Zavyalov, D. V., Savelyev, E. N., Alykova, E. A., Pichugin, A. M., Nakhod, M. A., Sukhareva, E. M., Dubinina, A. D., Farkhutdinova, E. I.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Diamines
Dianhydrides
Diketones
Fluorine
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Inorganic Chemistry
Optical properties
Organic Chemistry
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Summary:It was shown that copolyimides based on adamantane-containing diamine and dianhydrides of 2,3,3′,4′-biphenyltetracarboxylic acid (a-BPDA) and 5,5′-(1,1,1,3,3,3-hexafluoropropane-2,2-diyl)bis(2-benzofuran-1,3-dione) (6FDA) are characterized by good thermal-oxidative properties ( T 5% = 465–485 °C) and a high optical transparency ( T 400 = 60–80%) in comparison with copolyimides based on the same dianhydrides and 2,2′-bis(trifluoromethyl)biphenyl-4,4′-diamine (TFBA), containing bulky trifluoromethyl fragments ( T 400 = 38–67%).
ISSN:1066-5285
1573-9171
DOI:10.1007/s11172-024-4322-7