Polyimide material and preparation method thereof

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof

Reexamination Certificate

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Details

C528S310000, C528S350000, C528S351000, C524S430000, C524S437000, C524S445000, C524S449000

Reexamination Certificate

active

07858734

ABSTRACT:
A polyimide material comprises a polyimide. The polyimide has repeating units of formula (I). The polyimide material further comprises a coupling agent-containing filler.A method for preparing a polyimide material comprises allowing a mixture comprising an aromatic tetracarboxylic dianhydride, an aromatic diamine, and a coupling agent-containing filler to react to produce a polyamic acid. The method further comprises contacting the polyamic acid with an aliphatic dicarboxylic acid of formula (II) to produce an intermediate, and imidizing the intermediate to produce the polyimide material.A polyimide comprises repeating units of formula (I).

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Yang, S.Y., Park, C.E., Jung, M.S. Polymer, vol. 44, p. 3243-3249, 2003.

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