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Pyromellitic dianhydride

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white solid

Pyromellitic dianhydride 4439Oxydianiline Wikipedia

Pyromellitic dianhydride is an organic compound with the formula C6H2(C2O3)2. It is the double carboxylic acid anhydride that is used in the preparation of polyimide polymers such as Kapton. It is a white solid.

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It is prepared by gas-phase oxidation of 1,2,4,5-tetramethylbenzene (or related tetrasubstituted benzene derivatives). An idealized equation is:

C6H2(CH3)4 + 6 O2 → C6H2(C2O3)2 + 6 H2O
Pyromellitic dianhydride Polypyromellitic dianhydridealt36diaminoacridine hemisulfate

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Pyromellitic dianhydride Patent EP0480266A2 Perfluorinated polyimide perfluorinated poly

References

Pyromellitic dianhydride Wikipedia
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