Sydnone based polyimide

Details Sydnone based polyimide Sydnone based polyimide

1985-04-08

1986-08-19

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

521180, 521183, 521189, 528170, 528228, 528321, C08G 7310

Patent

active

046070931

ABSTRACT:
Novel amorphous polyimides are provided which are formed by the polymerization of bismaleimides with sydnones wherein carbon dioxide is evolved.
The polyimides are readily soluble in dipolar aprotic solvents and are further characterized by high temperature stability to at least 300.degree. C.
The polymers find particular utility in the form of films and solutions useful for wire enamel and electrical coatings.

REFERENCES:
patent: 3694417 (1972-09-01), Rigby et al.
patent: 3897393 (1975-07-01), Lu
patent: 3998787 (1976-12-01), Bargain
Stille et al., J. of Polymer Science, Part A-1, vol. 6, 2331-2342 (1968).

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