Copolymers of vinyl chloride obtained by polymer-analogous reactions of polyvinyl chloride with sodium salts of heteroaromatic H-N acids

By a reaction of PVC with sodium salts of pyrazole and 3,5-dimethylpyrazole we obtained copolymers possessing paramagnetic properties with a concentration of paramagnetic centers 1017–1019 spin g−1 and g-factor of 2.0024-2.0044.