COPOLYMERS EXHIBITING IMPROVED THERMO-OXIDATIVE STABILITY

Polyamic acid polymers with varying ratios of rigid monomers and solubilizing monomers exhibiting improved thermo-oxidative stability. Preferred rigid monomers are BPDA and p-PDA or m-PDA. Preferred solubilizing monomers are ODPA and 2,2'-bis(trifluoromethyl) benzidine. Preferrably a terminal g...

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Bibliographische Detailangaben
Hauptverfasser:	Brad P. MORGAN, Kyle A. BERGER, Tyler L. DUNIHO, Jeffrey R. DIMAIO, Adam T. HALDEMAN, Margaret SHAUGHNESSY
Format:	Patent
Sprache:	eng ; spa
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:	Polyamic acid polymers with varying ratios of rigid monomers and solubilizing monomers exhibiting improved thermo-oxidative stability. Preferred rigid monomers are BPDA and p-PDA or m-PDA. Preferred solubilizing monomers are ODPA and 2,2'-bis(trifluoromethyl) benzidine. Preferrably a terminal group selected from phthalic anhydride and PEPA is present. Polímero de ácido poliámico con relaciones variables de monómeros rígidos y monómeros solubilizantes que exhiben una estabilidad termooxidativa mejorada.