Polyimides

Details Polyimides Polyimides

1980-02-15

1980-12-23

Foelak, Morton

Coating processes

With post-treatment of coating or coating material

Solid treating member or material contacts coating

427373, 521 77, 521 99, 521185, 521918, 528183, 528229, 528352, 528353, C08J 902

Patent

active

042411149

ABSTRACT:
Polyimide foams derived from mixtures of aromatic diamines and partial esters of a benzophenonetetracarboxylic acid. The precursors are converted into polyimide foams by the application of heat; and the foams are then compressed, yielding dense, rigid, and structurally strong, intumescent materials.

REFERENCES:
patent: 3726834 (1973-04-01), Acle, Jr.
patent: 3793281 (1974-02-01), Acle, Jr.
patent: 3966652 (1972-06-01), Gagliani et al.

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