Influence of Metallocene Type on the Order of Ethylene Polymerization and Catalyst Deactivation Rate in a Solution Reactor

被引：6

作者：

Mehdiabadi, Saeid ^{[1
]}

Soares, Joao B. P. ^{[1
]}

机构：

[1] Univ Waterloo, Dept Chem Engn, Waterloo, ON N2L 3G1, Canada

来源：

MACROMOLECULAR SYMPOSIA | 2009年 / 285卷

关键词：

metallocene catalysts; polyethylene; polymerization kinetics; solution polymerization; polymerization reaction engineering; ALPHA-OLEFINS; COPOLYMERIZATION; POLYOLEFINS;

D O I：

10.1002/masy.200951113

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The solution polymerization of ethylene using rac-Et(Ind)(2)ZrCl2/MAO and (Dimethylsilyl(tert-butylamido)(tetramethyl- cyclopentadienyl)titanium Dichloride)(CGC-Ti)/MAO was studied in a semi-batch reactor at 120 degrees C under different monomer pressures and catalyst concentrations. The kinetics of ethylene polymerization with rac-Et(Ind)(2)ZrCl2/MAO can be described with first order reactions for polymerization and catalyst deactivation. When (CGC-Ti)/MAO is used, however, second order kinetics are observed for catalyst decay and the order of polymerization changes from 2 to 1 with increasing ethylene pressure.

引用

页码：101 / 114

页数：14

共 13 条

[1] Characterization and modeling of metallocene-based branch-block copolymers [J].

Dekmezian, AH ;

Soares, JBP ;

Jiang, PJ ;

Garcia-Franco, CA ;

Weng, WQ ;

Fruitwala, H ;

Sun, T ;

Sarzotti, DM .

MACROMOLECULES, 2002, 35 (25) :9586-9594

[2] Shuttling polyolefins to a new materials dimension [J].

Gibson, VC .

SCIENCE, 2006, 312 (5774) :703-704

[3]

Kim JD, 1999, MACROMOL RAPID COMM, V20, P347, DOI 10.1002/(SICI)1521-3927(19990601)20:6<347::AID-MARC347>3.0.CO

[4]

2-B

[5]

Kim JD, 1998, MACROMOL RAPID COMM, V19, P197, DOI 10.1002/(SICI)1521-3927(19980401)19:4<197::AID-MARC197>3.0.CO

[6]

2-4

[7] The experiments and correlations of the solubility of ethylene in toluene solvent [J].

Lee, LS ;

Ou, HJ ;

Hsu, HF .

FLUID PHASE EQUILIBRIA, 2005, 231 (02) :221-230

[8] Simulation of polymerization and long chain branch formation in a semi-batch reactor using two single-site catalysts [J].

Mehildiabadi, Saeid ;

Soares, Joao B. P. ;

Dekmezian, Armenag H. .

MACROMOLECULAR REACTION ENGINEERING, 2008, 2 (01) :37-57

[9]

Montgomery D.C., 2005, DESIGN ANAL EXPERIME

[10] Polyolefins with long chain branches made with single-site coordination catalysts: A review of mathematical modeling techniques for polymer microstructure [J].

Soares, JBP .

MACROMOLECULAR MATERIALS AND ENGINEERING, 2004, 289 (01) :70-87

← 1 2 →