N,N-Dimethyl-3,4-Dimethylenepyrrolidinium Bromide Polymer

The formation of cyclic structures during the polymerization processes had led to many interesting and useful polymers. Aqueous solution of N,N-dimethyl-3,4-dimethylenepyrrolidinium bromide were found to polymerize spontaneously at 60°C. The polymerization occurs by a 1,4-addition and the polymer product has properties very similar to that of poly(N,N-dimethyldiallylammonium chloride). High molecular weight polymers were obtained with monomer concentrations of 40-50%. Higher monomer concentrations yielded insoluble gels.