Rigid rod polymer based on pyridobisimidazole

Details Rigid rod polymer based on pyridobisimidazole Rigid rod polymer based on pyridobisimidazole

C - Chemistry, Metallurgy

08

G

C08G 73/18 (2006.01) C08G 75/32 (2006.01) D01F 6/74 (2006.01)

Patent

CA 2161663

Claimed is a rigid rod polymer in which at least 50 % of die recurring groups satisfies the formula (I) and, optionally, in the remaining groups the 2,5-dihydroxy-p-phenylene is replaced by an arylene which may be substituted or not, and/or the pyridobisimidazole is replaced by benzobisimidazole, benzobisthiazole, benzobisoxazole, pyridobisthiazole, and/or pyridobisoxazole. A 10-21 wt.% solution of the polymer in polyphosphoric acid can be spun into fibres having exceptional properties.

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