New poly(enaryloxynitrile)s bearing styrylpyridine segments were synthesized by interfacial polycondensation of p-bis(1-chloro-2,2-dicyanovinyl)benzene with various bisphenols such as 6-(4-hydroxystyryl)-3-hydroxypyridine (HSHP), 2,6-di(4-hydroxystyryl)pyridine and 2-(4-hydroxystyryl)-8-hydroxyquinoline. They were characterized by viscosity, elemental analysis, FT i.r., H-1 and C-13 n.m.r., X-ray, d.t.a., t.m.a., t.g.a. and isothermal gravimetric analysis. The polymer prepared from HSHP was crystalline and had a T-g at 270 degrees C. The other polymers were amorphous and showed T(g)s at 200-210 degrees C and softening at 235-247 degrees C. All the polymers displayed an enhanced solubility in common organic solvents. Upon heat-curing, crosslinked polymers were obtained which were stable up to 370-397 degrees C in N-2 and afforded anaerobic char yields of 76-80% at 800 degrees C.