Polybenzimida zoquinazolines and prepolymers for making same

Highly cross-linked, infusible, poly(benzimidazoquinazolines) are made by heat polymerizing fusible condensation prepolymers and pre-copolymers which, in turn, are made by the melt condensation of bis-2(o-aminoaryl)imidazoles with (a) aryl esters of extended aromatic carboxylic acids having a carbox...

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Bibliographische Detailangaben
Hauptverfasser:	FITZGERALD, SURVIVING SPOUSE, BY MARY E, MILLIGAN, ROBERT J, FITZGERALD, JR., DECEASED, WALTER P
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	Highly cross-linked, infusible, poly(benzimidazoquinazolines) are made by heat polymerizing fusible condensation prepolymers and pre-copolymers which, in turn, are made by the melt condensation of bis-2(o-aminoaryl)imidazoles with (a) aryl esters of extended aromatic carboxylic acids having a carboxyl functionality greater then two or (b) a mixture of the latter acid esters and aryl esters of aromatic dicarboxylic acids, respectively. The prepolymers and pre-copolymers may be employed to form laminates, molded articles, etc., having high strength and high temperature characteristics.