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

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

2011-05-03

2011-05-03

Woodward, Ana L (Department: 1765)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

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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