Abstract
High performance thermosets were prepared by thermally curing of multifunctional intermediates containing allyl, maleimide, furyl and benzoxazine rings. The multifunctional intermediates were obtained by cycloaddition reaction of 2,2'-bis(8-allyl-3-furfuryl-3,4-dihydro-2H-1,3-benzoxazinyl)isopropane or bis(3-furfuryl-3,4-dihydro-2H-1,3-benzoxazinyl)isopropane with 4,4'-bismaleimidodiphenylmethane in molar ratio of 1:1 and 1:2, in THF at reflux. The chemical structure of multifunctional intermediates was elucidated by FTIR and H-1-NMR spectroscopy and curing parameter by differential scanning calorimetry. The thermal analysis showed that decomposition of these materials takes place in two stages and DSC measurements of networks did not exhibit the glass transition temperature up to 300 A degrees C.