ABSTRACT
Cyclopolymerization of divinyl sulfone, and 1,4-pentadiene with maleic anhydride, dimethyl maleate, acrylonitrile and vinyl acetate was studied in greater detail and under a greater variety of conditions. High molecular weight copolymers of divinyl sulfone with maleic anhydride were prepared. Consistent with the theory that donor-acceptor complexes are involved in certain copolymerizations, it was shown in this work that both of the vinyl silanes studied formed complexes with maleic anhydride. The participation of the complex in the copolymerization was only 1-17% despite a significantly higher complex reactivity compared to monomer reactivity. Cyclopolymerization of d-limonene with maleic anhydride in tetrahydrofuran has been reported recently. The copolymer reduced viscosities were reported to be greater than 0.3 when measured at 0.2 wt.% concentration in an appropriate solvent at 30 C. Cyclopolymerization of diallyl ether with sulfur dioxide has also been shown to occur. Solvent effects in the cyclopolymerization of MA with DVE have been systematically studied.
