309263-85-2Relevant articles and documents
New polymers with alkylidenesuccinimide structures based on bismaleimides and biscitraconimides
Gaina, Viorica,Gaina, Constantin
experimental part, p. 647 - 652 (2011/10/18)
New polymers containing alkylidenesuccinimide structures prepared from phosphorous ylides of bismaleimides or biscitraconimides and aromatic dialdehydes by the Witting reaction, are reported for the first time in the literature. Phosphorous ylides of bismaleimides or biscitraconimides were synthesized in situ by the reaction of bismaleimide or biscitraconimide or AB monomers containing both maleimide and aldehyde or citraconimide and aldehyde groups with triphenylphosphine in metha-cresol or acetic acid. The structures of monomers and polymers were confirmed by FTIR, 1H-NMR and UV-visible spectroscopy and elemental analysis. The thermal behaviour of polymers was studied by thermogravimetric analysis and differential calorimetric measurements.