A series of new monomers for polyimide (PI) formation were prepared by the condensation reaction of 4-alkoxy-2,6-dichloro-s-triazine (I) with 2-furanmethylamine. The resulting 2,6-bis(2-furanylmethyl imino)-4-alkoxy-s-triazines (II) were obtained in 60-70% yield and were characterized by elemental analysis, IR, and NMR spectroscopy. Preliminary experimental study of the Diels-Alder (DA) intermolecular polymerization of such bis-furan derivatives (II) with one of the bis-maleimides afforded PIs in a good yield. Systematic work on PIs based on these monomers is under progress.
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Patel et al. (2000) studied this question.
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