Bis[3-(2-Allylphenoxy) Phthalimides]: A New Class of Comonomers for Bismaleimides

A series of new bis[3-(2-allylphenoxy) phthalimides] has been synthe sized from bis(3-nitrophthalimides) and o-allylphenol-Na involving a nucleophilic nitrodisplacement reaction. H-NMR spectra indicate that under the mild reaction conditions used (55°C), only 4-5% of the allylphenoxy groups are isomerized to propenylphenoxy groups. The new bis(allylphenoxyphthalimides) are useful comonomers for bismaleimides. Blends of bis (allylphenoxyphthalimides) and bismaleimides thermally copolymerize to tough, high T_g copolymer networks.