Process for the preparation of polystyrylpyridine

Details Process for the preparation of polystyrylpyridine Process for the preparation of polystyrylpyridine

1978-01-19

1979-08-07

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 328N, 260 334R, 260 338R, 528248, C08G 1226

Patent

active

041637402

ABSTRACT:
Solutions of polystyrylpyridine are prepared by a novel process which consists of carrying out the polycondensation of at least one aromatic dialdehyde, preferably terephthalic dialdehyde, and at least one pyridinic derivative substituted by at least two reactive methyl groups at a temperature between 150.degree. C. and 200.degree. C. The polycondensation reaction is stopped after the extent of condensation is equal to at least 40%, the polycondensate is then dissolved in a solvent which is methylethylketone, ethyl acetate, methylene chloride, trichloroethylene, chlorobenzene, n-propanol and preferably a mixture of methylethylketone and n-propanol.
The polystyrylpyridine solutions obtained according to the process of this invention are useful for the preparation of composite materials which exhibit very good mechanical properties, excellent behavior under conditions of high temperature, flame and chemical and atmospheric agents.

REFERENCES:
patent: 3994862 (1976-11-01), Ropars

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