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J. Kapko

Copolymerization of vinyl monomers with N-nitrosopolycaproamide

Polimery 1993, No 2, 64

DOI: dx.doi.org/10.14314/polimery.1993.064


It was found that N-nitrosopolycaproamide (NPA-6), which decomposes during heating with the evolution of nitrogen and with the formation of a biradical of capronic acid [according to reaction (1)], can not only initiate radical polymerization of vinyl monomers, but can also be incorporated into growing chain with the formation of copolymers. By reacting NPA-6 with a mixture of acrylonitrile (AN) and styrene (St), terpolymers containing mers of AN, St and caproester were obtained. In spite of a large excess of vinyl monomers, polyester of e-hydroxy capronic acid is formed simultaneously in these reactions by recombination of biradicals from decomposition of NPA-6 [reaction (3)]. NPA-6/AN/St terpolymers are thermoplastic materials, insoluble in hot toluene, with mechanical properties analogous to those of polystyrene.

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