Synthesis of polyimides (PI) from poly-carbodiimides and...

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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C525S418000, C525S419000, C525S424000, C525S450000, C525S453000, C525S907000, C528S044000, C528S048000, C528S080000, C528S083000, C528S288000, C528S312000, C528S322000

Reexamination Certificate

active

07935779

ABSTRACT:
Disclosed are processes for synthesizing polyimides by a sequential self-repetitive reaction between poly (aryl carbodiimide) (p-CDI) or aryl diisocyanates with dianhydrides.

REFERENCES:
patent: 5648451 (1997-07-01), Sashida et al.
patent: 6-80776 (1994-03-01), None

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