Thermotropic copolyazomethines having a mesophase temperature range lying within a desired range of values are obtained by copolymerizing terephthalic aldehyde with at least two different 1,n-bis(4-aminophenoxy)alkanes. Such copolya omethines are particularly useful as reinforcing materials for the usual thermoplastic poly­mers, such as polycarbonate, polybutyleneterephthalate, polyethyleneterephthalate and polyamides.

Copolymerization of trioxane and norbornadiene or a monoalkyl-substituted derivative thereof in the solid state

Citations

Thermotropic copolyazomethines and process for preparing them

References

High molecular weight polymer and process therefor

Trioxane-norbornadiene copolymers

Catalytic polymerization of trioxane

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