High-temperature polyimides prepared from 2,2-bis-[(2-halo-4-ami

Details High-temperature polyimides prepared from 2,2-bis-[(2-halo-4-ami High-temperature polyimides prepared from 2,2-bis-[(2-halo-4-ami

1983-04-07

1984-10-16

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

C08G 7310

Patent

active

044776489

ABSTRACT:
There are provided the aromatic diamines 2,2-bis-[(2-halo-4-aminophenoxy)-phenyl]hexafluoropropane, where the attached ortho halogen is preferably chlorine, and 4,4'-bis(4-aminophenoxy)biphenyl, as novel monomers for polyimide polymerizations. The former, when reacted with 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride, provides a polyimide having exceptional high-temperature performance. The latter diamine is a low-cost monomer for polyimide production.

REFERENCES:
patent: 3356648 (1967-12-01), Rogers
patent: 3959350 (1976-05-01), Rogers
patent: 4111906 (1978-09-01), Jones et al.
patent: 4196144 (1980-04-01), Darms
patent: 4196277 (1980-04-01), Jones et al.
patent: 4203922 (1980-05-01), Jones et al.
patent: 4239880 (1980-12-01), Darms

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