Polyimides containing s-triazine ring

A series of new polyimides containing s-triazine ring have been synthesized via Diels–Alder intermolecular polymerization of 2,6-bis(2-furanyl methyl imino)-4-(2-butoxy)-1,3,5-triazine with different bis(maleimide) compounds first, than aromatization of corresponding Diels–Alder products. All the poly(imino-s-triazine-imide)s were characterized by elemental analysis, FT-IR spectral studies, number average molecular weight (Mn) by non-aqueous conductometric titration and thermogravimetry. Glass-fiber reinforced composites were prepared via in situ Diels–Alder intermolecular reaction between 2,6-bis(2-furanyl methyl imino)-4-(2-butoxy)-1,3,5-triazine and different bis(maleimide) compounds without evolution of by-products. The prepared composites were characterized by chemical resistivity and mechanical properties.