Process for synthesis of heterocyclic polymers

Details Process for synthesis of heterocyclic polymers Process for synthesis of heterocyclic polymers

1993-06-30

1994-06-28

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528 86, 528183, 528186, 528210, 528336, 528337, 528342, 528397, 528422, C08G 7318, C08G 7322, C08G 7532

Patent

active

053248082

ABSTRACT:
In reactions to form PBZ polymers such as polybenzoxazole, monomers having an aromatic group bonded to a primary amine group and to a hydroxy, thio or amine group ortho to said primary amine group are contacted with monomers having an electron-deficient carbon group. In the present invention the electron deficient carbon group may be an alkali metal carboxylate group or a trihalomethyl group. Useful monomers include, for example, .alpha.,.alpha.,.alpha.,.alpha.',.alpha.',.alpha.'-hexachloroxylene and disodium terephthalate.

REFERENCES:
patent: 4312976 (1982-01-01), Choe
patent: 4423202 (1983-12-01), Choe
patent: 5235023 (1993-08-01), So

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