Ethylene-bridged ansa-zirconocene dichlorides for syndiospecific propene polymerization

Bernhard Rieger; Timo Repo; Gerhard Jany

doi:10.1007/BF00312898

Ethylene-bridged ansa-zirconocene dichlorides for syndiospecific propene polymerization

Bernhard Rieger, Timo Repo, Gerhard Jany

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

21 Scopus citations

Abstract

Three ethylene-bridged unsymmetric zirconocene dichlorides bearing a cyclopentadienyl unit together with either a tetraphenylcyclopentadienyl- (8), a 7,9-diphenylcyclopent[a]-acenaphtha-dienyl-(9) or a fluorenyl group (10) were used for propene polymerization after activation with methylalumoxane (MAO) at 30, 50, 70 and 80°C. Whereas 8 is inactive at all, 9 produces atactic polypropene waxes with high activity. The polypropene products of 10 are syndiotactic with stereoregularities depending on the polymerization temperature as well as on monomer and on MAO concentration.

Original language	English
Pages (from-to)	87-94
Number of pages	8
Journal	Polymer Bulletin
Volume	35
Issue number	1-2
DOIs	https://doi.org/10.1007/BF00312898
State	Published - Jan 1995
Externally published	Yes

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title = "Ethylene-bridged ansa-zirconocene dichlorides for syndiospecific propene polymerization",

abstract = "Three ethylene-bridged unsymmetric zirconocene dichlorides bearing a cyclopentadienyl unit together with either a tetraphenylcyclopentadienyl- (8), a 7,9-diphenylcyclopent[a]-acenaphtha-dienyl-(9) or a fluorenyl group (10) were used for propene polymerization after activation with methylalumoxane (MAO) at 30, 50, 70 and 80°C. Whereas 8 is inactive at all, 9 produces atactic polypropene waxes with high activity. The polypropene products of 10 are syndiotactic with stereoregularities depending on the polymerization temperature as well as on monomer and on MAO concentration.",

author = "Bernhard Rieger and Timo Repo and Gerhard Jany",

year = "1995",

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doi = "10.1007/BF00312898",

language = "English",

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pages = "87--94",

journal = "Polymer Bulletin",

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T1 - Ethylene-bridged ansa-zirconocene dichlorides for syndiospecific propene polymerization

AU - Rieger, Bernhard

AU - Repo, Timo

AU - Jany, Gerhard

PY - 1995/1

Y1 - 1995/1

N2 - Three ethylene-bridged unsymmetric zirconocene dichlorides bearing a cyclopentadienyl unit together with either a tetraphenylcyclopentadienyl- (8), a 7,9-diphenylcyclopent[a]-acenaphtha-dienyl-(9) or a fluorenyl group (10) were used for propene polymerization after activation with methylalumoxane (MAO) at 30, 50, 70 and 80°C. Whereas 8 is inactive at all, 9 produces atactic polypropene waxes with high activity. The polypropene products of 10 are syndiotactic with stereoregularities depending on the polymerization temperature as well as on monomer and on MAO concentration.

AB - Three ethylene-bridged unsymmetric zirconocene dichlorides bearing a cyclopentadienyl unit together with either a tetraphenylcyclopentadienyl- (8), a 7,9-diphenylcyclopent[a]-acenaphtha-dienyl-(9) or a fluorenyl group (10) were used for propene polymerization after activation with methylalumoxane (MAO) at 30, 50, 70 and 80°C. Whereas 8 is inactive at all, 9 produces atactic polypropene waxes with high activity. The polypropene products of 10 are syndiotactic with stereoregularities depending on the polymerization temperature as well as on monomer and on MAO concentration.

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DO - 10.1007/BF00312898

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AN - SCOPUS:0002308796

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VL - 35

SP - 87

EP - 94

JO - Polymer Bulletin

JF - Polymer Bulletin

IS - 1-2

ER -

Ethylene-bridged ansa-zirconocene dichlorides for syndiospecific propene polymerization

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