Copolyamide-imides

Copolyamide-imides

Copolyamide-imides characterized by thermoplasticity, high heat resistance and high impact resistance are derived by the reaction of 4,4'-methylenebis(phenyl isocyanate), optionally in admixture with a minor amount (up to 10 mole percent) of toluene diisocyanate (2,4-, 2,6-isomers and mixtures)...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ONDER, KEMAL, GROSSMAN, STEVEN J
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:Copolyamide-imides characterized by thermoplasticity, high heat resistance and high impact resistance are derived by the reaction of 4,4'-methylenebis(phenyl isocyanate), optionally in admixture with a minor amount (up to 10 mole percent) of toluene diisocyanate (2,4-, 2,6-isomers and mixtures), with a mixture of trimellitic acid or anhydride (30-40 mole percent), isophthalic acid (26-44 mole percent) and a C7-10 aliphatic dicarboxylic acid (balance of 100 mole percent but not greater than 32 mole percent). These polymers are useful as engineering plastics.