Polymer and Materials Science
Wiley InterScience Backfile Collection 1832-2000
Chemistry and Pharmacology
Ethyl 2,3-dicyanoacrylate was prepared from ethyl 2,3-dicyanopropionate. High molecular weight, 1:1 alternating copolymers of styrene with tricyanoethylene and ethyl 2,3-dicyanoacrylate were prepared by bulk polymerization with the use of free-radical initiators. Solution polymerization of styrene with ethyl 2,3-dicyanoacrylate in acetonitrile gave the highest molecular weight copolymer (ηinh = 0.74). The copolymers showed unusual thermal properties, i.e., an initial break that was 50-75°C lower than that of polystyrene followed by the formation of an intermediate product that was fairly stable to approximately 500°C.
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