Polyheterocyclic polymers derived from substituted tetraamino py

Details Polyheterocyclic polymers derived from substituted tetraamino py Polyheterocyclic polymers derived from substituted tetraamino py

1975-09-26

1978-03-14

Lee, Lester L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 302, 260 306R, 260 308R, 260 308DS, 260 324, 260 326N, 260 465E, 260 47UA, 260 49, 260 50, 260 65, 260 78UA, 260 78TF, 260 7841, 428474, C08G 7318

Patent

active

040790398

ABSTRACT:
Soluble precyclized precursors to polybenzimidazoles and similar polyheterocyclic polymers are prepared by reacting (1) an acid derivative such as a bis(acid halide) or mono(acid halide)anhydride or dianhydride of a di-, tri-, or tetra-basic acid, with (2) an acid salt of a tetraaminopyridine in which the four position is substituted with an alkyl group, or with (2) an acid salt of an .alpha.,.alpha.-N,N'-disubstituted tetraaminopyridine, or with (2) an acid salt of a N,N'-disubstituted bipyridyl compound.

REFERENCES:
patent: 3804804 (1974-04-01), Gerber et al.

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