Polymerization of Propylene by Mixed Ziegler-Natta and Metallocene Catalysts

Anatoli Lisovskii; Michael Shuster; Michael Gishvoliner; Gershon Lidor; Moris S. Eisen

doi:10.1002/(SICI)1099-0739(199806)12:6<401::AID-AOC702>3.0.CO;2-H

Polymerization of Propylene by Mixed Ziegler-Natta and Metallocene Catalysts

Anatoli Lisovskii, Michael Shuster, Michael Gishvoliner, Gershon Lidor, Moris S. Eisen^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

The polymerization of propylene using a mixture of racemic metallocenes and Ziegler-Natta catalysts was investigated. The polypropylene was obtained as a mixture of a fine powder and beads, with the powder being absorbed partially on the beads. The relative amount of the powder can be controlled by the concentration of the metallocene. The compatibility between the components of the mixed catalytic systems and the effect of the components on the rate of polymerization and on the properties of the new polymers were studied. The metallocene system dramatically affects the melt viscosity, isotacticity and molecular weight of the polymers. The two catalytic systems are able to act jointly, producing different polymers, for which separate melting and crystallization temperatures are obtained.

Original language	English
Pages (from-to)	401-408
Number of pages	8
Journal	Applied Organometallic Chemistry
Volume	12
Issue number	6
DOIs	https://doi.org/10.1002/(SICI)1099-0739(199806)12:6<401::AID-AOC702>3.0.CO;2-H
State	Published - Jun 1998
Externally published	Yes

Keywords

Catalysis
Metallocene
Polypropylene
Ziegler-Natta
α-Olefins

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10.1002/(SICI)1099-0739(199806)12:6<401::AID-AOC702>3.0.CO;2-H

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title = "Polymerization of Propylene by Mixed Ziegler-Natta and Metallocene Catalysts",

abstract = "The polymerization of propylene using a mixture of racemic metallocenes and Ziegler-Natta catalysts was investigated. The polypropylene was obtained as a mixture of a fine powder and beads, with the powder being absorbed partially on the beads. The relative amount of the powder can be controlled by the concentration of the metallocene. The compatibility between the components of the mixed catalytic systems and the effect of the components on the rate of polymerization and on the properties of the new polymers were studied. The metallocene system dramatically affects the melt viscosity, isotacticity and molecular weight of the polymers. The two catalytic systems are able to act jointly, producing different polymers, for which separate melting and crystallization temperatures are obtained.",

keywords = "Catalysis, Metallocene, Polypropylene, Ziegler-Natta, α-Olefins",

author = "Anatoli Lisovskii and Michael Shuster and Michael Gishvoliner and Gershon Lidor and Eisen, {Moris S.}",

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AU - Lisovskii, Anatoli

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AU - Gishvoliner, Michael

AU - Lidor, Gershon

AU - Eisen, Moris S.

PY - 1998/6

Y1 - 1998/6

N2 - The polymerization of propylene using a mixture of racemic metallocenes and Ziegler-Natta catalysts was investigated. The polypropylene was obtained as a mixture of a fine powder and beads, with the powder being absorbed partially on the beads. The relative amount of the powder can be controlled by the concentration of the metallocene. The compatibility between the components of the mixed catalytic systems and the effect of the components on the rate of polymerization and on the properties of the new polymers were studied. The metallocene system dramatically affects the melt viscosity, isotacticity and molecular weight of the polymers. The two catalytic systems are able to act jointly, producing different polymers, for which separate melting and crystallization temperatures are obtained.

AB - The polymerization of propylene using a mixture of racemic metallocenes and Ziegler-Natta catalysts was investigated. The polypropylene was obtained as a mixture of a fine powder and beads, with the powder being absorbed partially on the beads. The relative amount of the powder can be controlled by the concentration of the metallocene. The compatibility between the components of the mixed catalytic systems and the effect of the components on the rate of polymerization and on the properties of the new polymers were studied. The metallocene system dramatically affects the melt viscosity, isotacticity and molecular weight of the polymers. The two catalytic systems are able to act jointly, producing different polymers, for which separate melting and crystallization temperatures are obtained.

KW - Catalysis

KW - Metallocene

KW - Polypropylene

KW - Ziegler-Natta

KW - α-Olefins

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Polymerization of Propylene by Mixed Ziegler-Natta and Metallocene Catalysts

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Keywords

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