Application of an expanded copolymerization theory to systems involving α‐methylstyrene

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Abstract
It was shown that the copolymer system α‐methylstyrene—acrylonitrile conforms to the equation: where r1 = K—aaaa/K—aaab = 0, r1′ = K—baaa/K—baab = 0.05, r1″ = K—baa/K—bab = 0.13, and r2 = K—bb/K—ba = 0.06. The system α‐methylstyrene—fumaronitrile was found to obey the equation: where r1 = K—aaaa/K—aaab = 0, r1′ = K—baaa/K—baab = 0.05, r1″ = K—baabaa/K—baabab = 0.12, and r1‴ = K—babaa/K—babab = 0.17. These results demonstrated the inability of α‐methylstyrene to add to a sequence of three α‐methylstyrene units.