Polymer, Vol.41, No.16, 6043-6047, 2000
New aromatic diamines containing a multiring flexible skeleton for the synthesis of thermally stable polyimides
Multi-ring aromatic diamines bearing a long alkyl chain (C-6, C-8 or C-16) were obtained from the corresponding dinitro compounds synthesized by a Friedel-Crafts alkylation of substituted mesitylenes by paranitrobenzyl chloride. The bismaleimide synthesized from the diamine bearing a C-16 chain formed a thermostable polyimide.