AZEOTROPIC TERPOLYMERIZATION IN THE MIXTU RES METHYL ACRYLATE 5-ETHYL-2-VINYLPYRIDINE-AMINOSTYRENE

The copolymerization of the ternary systems methyl acrylate-5-ethyl-2- vinylpyridine-p, m-, or dimethylaminostyrenes was studied. For each sy stem, the azeotropic composition (coincides with the composition of a terpolymer) and extremum composition (terpolymers with the maximum Har wood block parameter) of copolymer mixtures were found. Using the simp lex centroid design of experiments, the character of pair and triple i nteractions-synergy and antagonism of the comonomers in terpolymerizat ion-was studied experimentally. The effect of the comonomers on the re gularity of unit alternation in terpolymers was estimated.