Study of Dimethoxysilacycloalkanes as External Donors in Ziegler-Natta Stereospecific Propylene Polymerisation

被引：0

作者：

Delphine Batt-Coutrot

Valérie Wolf

Jean Malinge

Thierry Saudemont

Claude Grison

Philippe Coutrot

机构：

[1] Université Henri Poincaré (Nancy-1),Laboratoire de Chimie Organique Biomoléculaire, Institut Nancéien de Chimie Moléculaire, FR CNRS 1742, UMR 7565

[2] Groupement de Recherches de Lacq,Laboratoire de Chimie Biomoléculaire

[3] UMR 5032,Laboratoire de Chimie Macromoléculaire

[4] ENSCM,undefined

[5] UMR 5076,undefined

[6] ENSCM,undefined

[7] Clariant Huningue,undefined

[8] ATOFINA Research,undefined

来源：

Polymer Bulletin | 2005年 / 54卷

关键词：

Polymer; Magnesium; Propylene; Structural Characteristic; Theoretical Prediction;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A series of cyclic dimethoxysilanes has been prepared using a one-step strategy which consists in reacting magnesium dibromoalkanes with tetramethoxysilane. The dimethoxysilacycloalkanes obtained were evaluated as the external electron donor in Ziegler–Natta catalysts for propylene polymerisation. Comparison of the experimental results with theoretical predictions using a molecular model confirmed the essential structural characteristics that are required to achieve stereospecific polymerisation of propylene. Very good activity and stereospecificity were obtained with 2,6-diethyl-1,1-dimethoxysilacyclohexane which led to results close to that of actual industrial external electron donors, cyclohexylmethyldimethoxysilane and dicyclopentyl dimethoxysilane.

引用

页码：377 / 385

页数：8