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Novel Polyimides with High Glass Transition Temperature
Targeted for compression molding applications and preparation of composites, this family of polyimide polymers are curable up to 350 deg C to tough, golden-orange films with high modulus, high glass transition temperatures, high inherent viscosity, and a reduced melt viscosity relative to classical polyimides.novel polyimides recurring structural unit (I) (see attachments) reacting bis(4-aminophenoxy) naphthalene (II) (NODA) 2-bis(3 4-dicarboxyphenyl) hexafluoropropane dianhydride isomeric isomers polymer group (III) oxygen atoms structure positions depending usedThe cured 350 degC tough golden-orange films modulus glass transition temperatures inherent viscosity melt permit compression molding semi-crystalline insoluble organic media stable 500 strength thermal/chemical stability production composites

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