Abstract
endo-N-Cyclohexyl-9-oxabicyclo[2,2,1]hept-2-ene-5,6-dicarboximide (CHO or endo-CHO), one of the norbornene derivatives, was prepared from N-cyclohexylmaleimide (CHMI) and furan (FN) according to the Diels-Alder reaction. The number average molecular weights (M̅n) of the polymers insoluble in methanol were 1100 to 2000, i.e., the degree of polymerization was 4 to 8. The oligomers having M̅n below 1000 were soluble in methanol. Retro-Diels Alder reaction mainly took place in the bulk reaction of CHO over 140°C. CHO was copolymerized with styrene, methyl methacrylate and vinyl acetate in the presence of radical initiators. The monomer reactivity ratios and Alfrey-Price Q-e values were determined.
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