Oxidatively stable rigid aromatic polyimide compositions and...

Details Oxidatively stable rigid aromatic polyimide compositions and... Oxidatively stable rigid aromatic polyimide compositions and...

C - Chemistry, Metallurgy

08

L

C08L 79/08 (2006.01) C08K 3/04 (2006.01) C08G 73/10 (2006.01)

Patent

CA 2293447

A rigid, aromatic polyimide composition prepared using a solution imidization process from an aromatic tetracarboxylic dianhydride and a diamine which is greater than 60 mole % to about 85 mole % p-phenylene diamine and 15 mole % to less than 40 mole % m-phenylene diamine exhibits exceptional tensile properties and thermal oxidative stability.

Une composition de polyimides aromatiques rigide préparée à l'aide d'un procédé d'imidation en solution à partir d'un dianhydride tétracarboxylique aromatique et d'une diamine qui comprend entre 60 mole % et environ 85 mole % de p-phénylène diamine et entre 15 mole % et moins d'environ 40 mole % de m-phénylène diamine présente des caractéristiques de traction et une stabilité à l'oxydation thermique exceptionnelles.

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