Polyimides

Details Polyimides Polyimides

C - Chemistry, Metallurgy

08

J

403/58, 18/672,

C08J 9/00 (2006.01) C08J 9/36 (2006.01) C08L 79/08 (2006.01)

Patent

CA 1131399

ABSTRACT OF THE DISCLOSURE 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.

319961

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