High molecular weight polyimidoylamidine and a polytriazine deri

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From heterocyclic reactant containing as ring atoms oxygen,...

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528483, 528492, 528494, C08G 6500, C08G 5914, C08G 5916

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active

056937482

ABSTRACT:
A high molecular weight polyimidoylamidine having an intrinsic viscosity of from 0.25 dl/g to 0.60 dl/g and a high molecular weight polytriazine derived therefrom having an intrinsic viscosity of from 0.25 dl/g to 0.65 dl/g are disclosed. A polyimidoylamidine having a molecular weight in a wide range, including high molecular weight, can advantageously be obtained by reacting a perfluoropolyether dinitrile with ammonia and reacting the resultant reaction product with a specific amount of a perfluoropolyether dinitrile. A terminal-stabilized polytriazine and its preparation methods are also disclosed. A polytrizine, which contains a nitrile group at side chains thereof and has an intrinsic viscosity within a specific range, is particularly suitable as a precursor of a perfluoroelastomer having excellent mechanical and chemical properties.

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