High performance bismaleimide resins modified by novel allyl compounds based on epoxy resins

A novel class of allyl compounds based on epoxy resins was synthesized and characterized. The Synthesis of these allyl compounds was carried out by reacting corresponding epoxy resin with 2-allyl-4-methylphenol. The copolymers of 4,4'-bismaleimidodiphenyl methane with the allyl compounds were prepared and their properties were measured. Results show that modified bis-maleimide resins have excellent processing characteristics such as low softening point, good solubility in acetone, outstanding tack and drape properties, high thermal and hygrothermal stability, as well as improved toughness. Composites based on these copolymers and woven glass cloth also have good properties.