INVESTIGATION ON THE SUPPORTED CATALYST SYSTEMSOF ALKOXYL TITANIUM CHLORIDE FORSTEREOSPECIFIC POLYMERIZATIONOF PROPYLENE Ⅲ. THE INFLUENCE OF DIFFERENT KINDS OF -OR GROUP ON THE CATALYTIC FUNCTION

He Da-wei; Chang Cui-ju; HU You-liang; XIE Guang-hua

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INVESTIGATION ON THE SUPPORTED CATALYST SYSTEMSOF ALKOXYL TITANIUM CHLORIDE FORSTEREOSPECIFIC POLYMERIZATIONOF PROPYLENE Ⅲ. THE INFLUENCE OF DIFFERENT KINDS OF -OR GROUP ON THE CATALYTIC FUNCTION

Research Article | 更新时间：2021-03-19

- INVESTIGATION ON THE SUPPORTED CATALYST SYSTEMSOF ALKOXYL TITANIUM CHLORIDE FORSTEREOSPECIFIC POLYMERIZATIONOF PROPYLENE Ⅲ. THE INFLUENCE OF DIFFERENT KINDS OF -OR GROUP ON THE CATALYTIC FUNCTION
- Acta Polymerica Sinica Issue 1, Pages: 38-42(1982)
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- Published：20 February 1982，
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He Da-wei, Chang Cui-ju, HU You-liang, XIE Guang-hua. INVESTIGATION ON THE SUPPORTED CATALYST SYSTEMSOF ALKOXYL TITANIUM CHLORIDE FORSTEREOSPECIFIC POLYMERIZATIONOF PROPYLENE Ⅲ. THE INFLUENCE OF DIFFERENT KINDS OF -OR GROUP ON THE CATALYTIC FUNCTION. [J]. Acta Polymerica Sinica (1):38-42(1982)
DOI：

He Da-wei, Chang Cui-ju, HU You-liang, XIE Guang-hua. INVESTIGATION ON THE SUPPORTED CATALYST SYSTEMSOF ALKOXYL TITANIUM CHLORIDE FORSTEREOSPECIFIC POLYMERIZATIONOF PROPYLENE Ⅲ. THE INFLUENCE OF DIFFERENT KINDS OF -OR GROUP ON THE CATALYTIC FUNCTION. [J]. Acta Polymerica Sinica (1):38-42(1982) DOI：

摘要

我们研究了烷氧基氯化钛Ti(OR)nCl4-n负载于MgCl2-EB(EB为苯甲酸乙酯)做为丙烯定向聚合反应的催化剂。本文报告不同种类及不同数目的-OR基团对催化剂性能的影响。结果表明

它们能以高活性催化丙烯定向聚合并得到高等规度聚合物

其中以n-C6H13-OTiCl3活性最好。由于空间位阻的缘故

-OR基团数目增多

对催化活性和等规度均不利。在钛活性组分中引入烷氧基团

聚合物分子量明显降低。

Abstract

We have studied the catalytic systems

Ti(OE)nCl4-n

supported on MgCl2-EB (EB stands for ethyl benzoate) for stereospeeific polymerization of propylene. In this paper

the influences of different kinds and number of -OR group on the catalytic function were reported. The result showed that all of these catalysts are in high activity for polymerization of propylene and high isotactic structure of polypropylene. The activity of n-C5H13OTiCl3 is the highest among them. Because of the steric hindrance

the increase of the number of --OR group leads to decrease catalytic activity and reguarity

When alkoxyl groups were introduced in the titanium active species

the molecular weight of the polymer was decreased obviously.

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