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EP0283739A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Bis (di-, tri- or tetra-substituted-cyclopentadienyl)-zirconium dihalides

Assignee: JNC Corp
•
Filing: 1988-02-23
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Granted: —
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Expires: 2008-02-23
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Abstract

Abstract Bis(di-, tri- or tetra-substituted-cyclopentadienyl)­zirconium dihalides represented by the following general formula [I] are provided, ( wherein R¹ denotes a substituent group on the cyclopenta­dienyl ring which is an alkyl radical of 1 to 5 carbon atoms; R 1 2 -C₅H₃ stands for a di-substituted cyclopentadienyl radical; and X is a halogen atom ). This compound, when combined with an aluminoxane repre­sented by the following general formula [VII], gives a high-­activity catalyst for the synthesis of polyolefins, ( wherein m is an integer of 4 to 20; and R² denotes a hydrocarbyl radical ).

Inventors

  • 👤 Shinya Miya
  • 👤 Masato Harada
  • 👤 Takaya Mise
  • 👤 Hiroshi Yamazaki

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-30 03:39
CPC Classifications
C; C07; C07F; C07F17/00; C08; C08F; C08F10/00; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F4/659; C08F4/65912; C08F4/6592; C08F4/65922; C08F4/65925; Y; Y10; Y10S; Y10S526/00; Y10S526/943

Claims Analysis

Total Claims: 15
Claim 1
Independent Claim 48 words
Bis(di-substituted-cyclopentadienyl)zirconium dihalides represented by the following general formula [I] or [II], wherein R¹ denotes a substituent group on the cyclopenta­dienyl ring which is an alkyl radical of 1 to 5 carbon atoms; R 1 2 -C₅H₃ stands for a di-substituted cyclopentadienyl radical; and X is a halogen atom.
Claim 2
Dependent Claim 48 words
Bis(di-substituted-cyclopentadienyl)zirconium dihalides represented by the following general formula [I] or [II], wherein R¹ denotes a substituent group on the cyclopenta­dienyl ring which is an alkyl radical of 1 to 5 carbon atoms; R 1 2 -C₅H₃ stands for a di-substituted cyclopentadienyl radical; and X is a halogen atom.
Claim 3
Dependent Claim 48 words
Bis(tri-substituted-cyclopentadienyl)zirconium dihalides represented by the following general formula [III] or [IV], wherein R¹ denotes a substituent group on the cyclopenta­dienyl ring which is an alkyl radical of 1 to 5 carbon atoms; R 1 3 -C₅H₂ stands for a tri-substituted cyclopentadienyl radical; and X is a halogen atom.
Claim 4
Dependent Claim 48 words
Bis(tri-substituted-cyclopentadienyl)zirconium dihalides represented by the following general formula [III] or [IV], wherein R¹ denotes a substituent group on the cyclopenta­dienyl ring which is an alkyl radical of 1 to 5 carbon atoms; R 1 3 -C₅H₂ stands for a tri-substituted cyclopentadienyl radical; and X is a halogen atom.
Claim 5
Dependent Claim 46 words
Bis(tetra-substituted-cyclopentadienyl)zirconium dihal­ides represented by the following general formula [V], wherein R¹ denotes a substituent group on the cyclopenta­dienyl ring which is an alkyl radical of 1 to 5 carbon atoms; R 1 4 -C₅H stands for a tetra-substituted cyclopenta­dienyl radical; and X is a halogen atom.
Claim 6
Dependent Claim 46 words
Bis(tetra-substituted-cyclopentadienyl)zirconium dihal­ides represented by the following general formula [V], wherein R¹ denotes a substituent group on the cyclopenta­dienyl ring which is an alkyl radical of 1 to 5 carbon atoms; R 1 4 -C₅H stands for a tetra-substituted cyclopenta­dienyl radical; and X is a halogen atom.
Claim 7
Dependent Claim 106 words
Catalyst for the synthesis of polyolefins which contains, as effective components, (A) a transition metal compound represented by the following general formula (VI), (R 1 n -C₅H 5-n )₂MX₂      ----- [VI] ( wherein R 1 n -C₅H 5-n denotes a substituted-cyclopentadienyl radical; n is an integer of 2 to 4; R¹ stands for an alkyl radical of 1 to 5 carbon atoms; M expresses titanium, zir­conium, vanadium or hafnium; and X is a halogen atom ), and (B) an aluminoxane represented by the following general formula [VII] or [VIII] ( wherein m is an integer of 4 to 20; and R² denotes a hydrocarbyl radical ).
Claim 8
Dependent Claim 106 words
Catalyst for the synthesis of polyolefins which contains, as effective components, (A) a transition metal compound represented by the following general formula (VI), (R 1 n -C₅H 5-n )₂MX₂      ----- [VI] ( wherein R 1 n -C₅H 5-n denotes a substituted-cyclopentadienyl radical; n is an integer of 2 to 4; R¹ stands for an alkyl radical of 1 to 5 carbon atoms; M expresses titanium, zir­conium, vanadium or hafnium; and X is a halogen atom ), and (B) an aluminoxane represented by the following general formula [VII] or [VIII] ( wherein m is an integer of 4 to 20; and R² denotes a hydrocarbyl radical ).
Claim 9
Dependent Claim 21 words
The catalyst as defined in claim 4 wherein M in said transition metal compound [VI] is zirconium and X is chlorine.
Claim 10
Dependent Claim 22 words
The catalyst as defined in claim 4 wherein R 1 n -C₅H 5-n is a 1,2-, 1,3-, 1,2,3-, 1,2,4- or 1,2,3,4-substituted-cyclo­pentadienyl radical.
Claim 11
Dependent Claim 118 words
Process for producing polyolefins by using a catalyst which contains, as effective components, (A) a transition metal compound and (B) an aluminoxane represented by the following general formula [VII] or [VIII], ( in which m is an integer of 4 to 20; and R² denotes a hydrocarbyl radical ), wherein said transition metal compound (A) is a compound represented by the following general formula [VI], (R 1 n -C₅H 5-n )₂MX₂      ----- [VI] ( wherein R 1 n -C₅H 5-n denotes a substituted-cyclopentadienyl radical; n is an integer of 2 to 4; R¹ stands for an alkyl radical of 1 to 5 carbon atoms; M expresses titanium, zir­conium, vanadium or hafnium; and X is a halogen atom ).
Claim 12
Dependent Claim 118 words
Process for producing polyolefins by using a catalyst which contains, as effective components, (A) a transition metal compound and (B) an aluminoxane represented by the following general formula [VII] or [VIII], ( in which m is an integer of 4 to 20; and R² denotes a hydrocarbyl radical ), wherein said transition metal compound (A) is a compound represented by the following general formula [VI], (R 1 n -C₅H 5-n )₂MX₂      ----- [VI] ( wherein R 1 n -C₅H 5-n denotes a substituted-cyclopentadienyl radical; n is an integer of 2 to 4; R¹ stands for an alkyl radical of 1 to 5 carbon atoms; M expresses titanium, zir­conium, vanadium or hafnium; and X is a halogen atom ).
Claim 13
Dependent Claim 23 words
The process for porducing polyolefins as defiend in claim 7 wherein said transition metal compound (A) is a compound having two di-substituted-cyclopentadienyl radicals.
Claim 14
Dependent Claim 23 words
The process for porducing polyolefins as defiend in claim 7 wherein said transition metal compound (A) is a compound having two tri-substituted-cyclopentadienyl radicals.
Claim 15
Dependent Claim 23 words
The process for porducing polyolefins as defiend in claim 7 wherein said transition metal compound (A) is a compound having two tetra-substituted-cyclopentadienyl radicals.

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