SELECTIVITY CONTROL BY TEMPERATURE-VARIATION IN THE FORMATION OF ISOTACTIC VS SYNDIOTACTIC POLYPROPYLENE WITH A TITANOCENE ALUMOXANE CATALYST

被引：49

作者：

ERKER, G

FRITZE, C

机构：

[1] Organisch-Chemisches Institut, Universität Münster, D-W-4400

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH | 1992年 / 31卷 / 02期

关键词：

D O I：

10.1002/anie.199201991

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The opposing effects of activation enthalpy and entropy most likely cause the transition from isotactic via atactic to syndiotactic polypropylene in polymerizations with the soluble metallocene catalyst 1 (X = Ph) and methyl-alumoxane when the reaction temperature is increased from -50 to +10-degrees-C. This proves how important temperature considerations are for structure-reactivity discussions.

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页码：199 / 202

页数：4

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