Polyimide-poly(phenylquinoxaline) block copolymers

Details Polyimide-poly(phenylquinoxaline) block copolymers Polyimide-poly(phenylquinoxaline) block copolymers

1989-09-27

1991-09-03

Bleutge, John C.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525434, C08L 7706

Patent

active

050456083

ABSTRACT:
Block copolymers of polyimide and poly (phenylquinoxaline) have been synthesized. They are useful, particularly as dielectric layers in thin film multilayer structures. The most preferred embodiments are formed from polyimides which are those from pyromellitic dianhydride and oxydianiline. The most preferred poly (phenylquinoxaline) is a monofunctional oligomer, which yields the best microstructure.

REFERENCES:
patent: 3943107 (1976-03-01), Seltzer et al.
"Synthesis of Polyphenylquinoxalines Via Armatic Nucleophilic Displacement", Connell, J. W., Hergenrother, P. M., 1988, Virginia, Commonw. Univ. Richmond.

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