THE BEHAVIOR OF HOMOGENEOUS IRON-BASED CATALYSTS BEARING PYRIDINE DIIMINE LIGANDS FOR ETHYLENE POLYMERIZATION*

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THE BEHAVIOR OF HOMOGENEOUS IRON-BASED CATALYSTS BEARING PYRIDINE DIIMINE LIGANDS FOR ETHYLENE POLYMERIZATION*

Papers | Updated：2021-06-21

- THE BEHAVIOR OF HOMOGENEOUS IRON-BASED CATALYSTS BEARING PYRIDINE DIIMINE LIGANDS FOR ETHYLENE POLYMERIZATION*
- Vol. 18, Issue 6, Pages: 509-513(2000)
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- Published：20 December 2000
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THE BEHAVIOR OF HOMOGENEOUS IRON-BASED CATALYSTS BEARING PYRIDINE DIIMINE LIGANDS FOR ETHYLENE POLYMERIZATION*[J]. 2000, 18(6): 509-513.
DOI：

THE BEHAVIOR OF HOMOGENEOUS IRON-BASED CATALYSTS BEARING PYRIDINE DIIMINE LIGANDS FOR ETHYLENE POLYMERIZATION*[J]. 2000, 18(6): 509-513. DOI：

摘要

The polymerization of ethylene by two iron-based catalysts

{[2

6-ArN=C(Me)2C5H3N]FeCl2} (Ar=2

6-C6H3-Me21; 2

6-C6Hv3 (i-Pr)v2 Ⅱ) has been investigated. Catalyst Ⅱ produces higher molecular weight polyethylene (PE) and broadenedpolydispersities relative to catalyst Ⅰ under analogous conditions and all polymers are linear. The kinetic profiles with ironcatalysts showed a smooth pattern during both rate build-up and rate lowering

which are different from the metallocene catalysts. The polymerization activity increases with Al/Fe value and an optimum temperature range at 40～50℃ was observed.The molecular weight of PE decreases with the increase of Al/Fe ratio and rise of polymerization temperature.

Abstract

The polymerization of ethylene by two iron-based catalysts

{[2

6-ArN=C(Me)2C5H3N]FeCl2} (Ar=2

6-C6H3-Me21; 2

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