Polyimide-esters and filaments

Details Polyimide-esters and filaments Polyimide-esters and filaments

C - Chemistry, Metallurgy

08

G

402/184

C08G 73/16 (2006.01) D01F 6/74 (2006.01)

Patent

CA 1197038

TITLE POLYIMIDE-ESTERS AND FILAMENTS ABSTRACT High modulus filaments are melt-spun from polyimide-esters derived from I 6-hydroxy-2-naphthoic acid, a diphenol and 4-carboxy-N-(p-carboxyphenyl)- phthalimide; II 6-hydroxy-2-naphthoic acid, an aromatic dicarboxylic acid 4-hydroxy-N-(p-hydroxy- phenyl)phthalimide; or III 6-hydroxy-2-naphthoic acid, 4-hydroxybenzoic acid and 4-carboxy-N-(p- hydroxyphenyl)phthalimide. The polyimide esters are optically anisotropic in the melt. As-spun filaments from these polymers can be heat treated while free from tension to increase their tenacity.

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