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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >The evolution of new generation 'single-site' Ziegler-Natta polymerization catalysts
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The evolution of new generation 'single-site' Ziegler-Natta polymerization catalysts

机译：新一代“单中心”齐格勒-纳塔聚合催化剂的发展

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Since the discovery of stereospecific polymerization of olefins by K. Ziegler and G, Natta in 1955, tremendous developments have occurred in the area of designing polymerization catalysts, Rapid advances in organo-metallic chemistry research practised both at academic and industrial laboratories throughout the world have led to the emergence of new generation olefin polymerization catalysts and polyolefin products, The purpose of this article is to highlight some of the major events that have occurred in the area of Ziegler-Natta catalysis and to illustrate the contributions of organometallic chemistry in the exciting story of the evolution of well-defined, 'single-site' metallocene catalysts. The developments in the mechanistic understanding of key steps of polymerization processes such as generation of active species, chain propagation and chain termination emerging from organometallic modeling studies are also highlighted. Also, the recent discovery of late transition metal olefin polymerization catalyst systems and its implications for further research in Ziegler-Natta catalysis is described. [References: 65]
机译：自K. Ziegler和Natta的G. Ziegler和G于1955年发现烯烃的立体定向聚合反应以来，在设计聚合催化剂领域已发生了巨大的发展。全世界学术和工业实验室进行的有机金属化学研究都取得了飞速的发展。导致了新一代烯烃聚合催化剂和聚烯烃产品的出现，本文的目的是突出显示齐格勒-纳塔催化领域发生的一些重大事件，并说明有机金属化学在这一激动人心的故事中的贡献定义明确的“单中心”茂金属催化剂的发展历程。还着重指出了对聚合过程关键步骤的机械理解的发展，例如有机金属模型研究中出现的活性物种的产生，链增长和链终止。另外，还描述了后期过渡金属烯烃聚合催化剂体系的最新发现及其对Ziegler-Natta催化的进一步研究的意义。 [参考：65]

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