COPOLYMERIZATION OF ETHYLENE AND PROPYLENE CATALYZED BY MAGNESIUM CHLORIDE SUPPORTED VANADIUM/TITANIUM BIMETALLIC ZIEGLER-NATTA CATALYSTS

Tao Jiang; Hong-xia Chen; Chen-gang Cao; Guo-liang Mao; Wei Du; Deng-fei Wang

doi:10.1007/s10118-011-1048-4

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COPOLYMERIZATION OF ETHYLENE AND PROPYLENE CATALYZED BY MAGNESIUM CHLORIDE SUPPORTED VANADIUM/TITANIUM BIMETALLIC ZIEGLER-NATTA CATALYSTS

PAPER | Updated：2021-06-21

- COPOLYMERIZATION OF ETHYLENE AND PROPYLENE CATALYZED BY MAGNESIUM CHLORIDE SUPPORTED VANADIUM/TITANIUM BIMETALLIC ZIEGLER-NATTA CATALYSTS
- Chinese Journal of Polymer Science Vol. 29, Issue 4, Pages: 475-482(2011)
- Affiliations：
  
  a.College of Material Science and Chemical Engineering, Tianjin University of Science & Technology, Tianjin 300457, China
  b.Department of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, China
- Author bio：
  
  **Tao Jiang (姜涛), E-mail: jiangtao@tust.edu.cn
- Funds：
- DOI：10.1007/s10118-011-1048-4
  CLC：
- Received：06 July 2010，
  
  Revised：2010-08-16，
  
  Accepted：17 September 2010，
  
  Published：2011
- Accepted：
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Tao Jiang, Hong-xia Chen, Chen-gang Cao, et al. COPOLYMERIZATION OF ETHYLENE AND PROPYLENE CATALYZED BY MAGNESIUM CHLORIDE SUPPORTED VANADIUM/TITANIUM BIMETALLIC ZIEGLER-NATTA CATALYSTS[J]. Chinese Journal of Polymer Science, 2011, 29(4): 475-482.
DOI：

Tao Jiang, Hong-xia Chen, Chen-gang Cao, et al. COPOLYMERIZATION OF ETHYLENE AND PROPYLENE CATALYZED BY MAGNESIUM CHLORIDE SUPPORTED VANADIUM/TITANIUM BIMETALLIC ZIEGLER-NATTA CATALYSTS[J]. Chinese Journal of Polymer Science, 2011, 29(4): 475-482. DOI： 10.1007/s10118-011-1048-4.

摘要

Abstract

Magnesium chloride supported vanadium/titanium bimetallic Ziegler-Natta catalysts with di-i-butyl phthalate as internal donor for copolymerization of ethylene and propylene were prepared. The effects of reaction temperature

ethylene/propylene molar ratio

aluminium/vanadium (Al/V) molar ratio and titanium/vanadium molar ratio on the catalytic activity were investigated. The molecular weight

molecular weight distribution

sequence composition and crystallinity of the products were measured by gel permeation chromatography

C-NMR and differential scanning calorimetry analysis

respectively. In comparison to the vanadium and titanium catalysts

the bimetallic catalyst showed higher catalytic activity and better copolymerization performance. The obtained ethylene/propylene copolymers have high molecular weight (10

)

broad molecular weight distribution

high propylene content with random or short blocked sequence structures (

= 1.919)

low melting temperatures and low crystallinities (

20%).

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