Penultimate effect in ethylene-styrene copolymerization and the discovery of highly active ethylene-styrene catalysts with increased styrene reactivity

…, RE Campbell, J Klosin, RE LaPointe…

Index: Arriola, Daniel J.; Bokota, Marilyn; Campbell Jr., Richard E.; Klosin, Jerzy; LaPointe, Robert E.; Redwine, O. David; Shankar, Ravi B.; Timmers, Francis J.; Abboud, Khalil A. Journal of the American Chemical Society, 2007 , vol. 129, # 22 p. 7065 - 7076

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Citation Number: 40

Abstract

For the first time commercially relevant catalysts for the copolymerization of ethylene and styrene have been identified. The catalysts maintain very high copolymer efficiencies at relatively high reactor temperatures without sacrificing styrene comonomer reactivity. The observations which led to this discovery are based upon the kinetic analysis of ethylene- styrene copolymerization using constrained geometry catalyst (η5-C5Me4)(SiMe2-Nt-Bu) ...