Patent US6933354B2 successfully refreshed from Google Patents.
US6933354B2
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Aluminoboronate activators for single-site olefin polymerization catalysts
Assignee: Equistar Chemicals LP
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Filing: 2004-03-23
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Granted: 2005-08-23
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Expires: 2024-03-23
Abstract
Abstract Single-site catalyst systems useful for polymerizing olefins are disclosed. The catalyst systems comprise an organometallic complex and an activator. The complex includes a Group 3-10 transition metal, M, and at least one indenoindolyl ligand that is pi-bonded to M. The activator is a reaction product of an alkylaluminum compound and an organoboronic acid. Catalyst systems of the invention significantly outperform known catalyst systems that employ a metallocene complex and similar aluminoboronate activators.
Inventors
- 👤 Michael W. Lynch
- 👤 Craig C. Meverden
- 👤 Sandor Nagy
- 👤 Karen L. Neal-Hawkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:00
CPC Classifications
C; C08; C08F; C08F10/00; C08F210/00; C08F210/16; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F4/659; C08F4/65908; C08F4/65912; C08F4/65916; C08F4/6592
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
55 words
A process which comprises polymerizing an olefin in the presence of a catalyst system comprising: (a) an organometallic complex which comprises a Group 3-10 transition metal, M, and at least one indenoindolyl ligand that is pi-bonded to M; and (b) an activator which comprises the reaction product of an alkylaluminum compound and an organoboronic acid.
Claim 2
Dependent Claim
55 words
A process which comprises polymerizing an olefin in the presence of a catalyst system comprising: (a) an organometallic complex which comprises a Group 3-10 transition metal, M, and at least one indenoindolyl ligand that is pi-bonded to M; and (b) an activator which comprises the reaction product of an alkylaluminum compound and an organoboronic acid.
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein the catalyst system is supported.
Claim 4
Dependent Claim
19 words
The process of claim 2 wherein the support is selected from the group consisting of silicas and aluminum phosphates.
Claim 5
Dependent Claim
24 words
The process of claim 1 wherein the olefin is ethylene or a mixture of ethylene with one or more C 3 -C 20 α-olefins.
Claim 6
Dependent Claim
24 words
The process of claim 4 wherein the olefin is ethylene or a mixture of ethylene with one or more C 3 -C 10 α-olefins.
Claim 7
Dependent Claim
67 words
A process which comprises polymerizing an olefin in the presence of a catalyst system comprising: (a) an organometallic complex which comprises a Group 4 transition metal, M, and at least one indenoindolyl ligand that is pi-bonded to M; and (b) an activator which compirises the reaction product of (1) an alkylaluminum compound selected from the group consisting of trimethylaluminum and triethylaluminum and (2) a polyfluoroaryl boronic acid.
Claim 8
Dependent Claim
67 words
A process which comprises polymerizing an olefin in the presence of a catalyst system comprising: (a) an organometallic complex which comprises a Group 4 transition metal, M, and at least one indenoindolyl ligand that is pi-bonded to M; and (b) an activator which compirises the reaction product of (1) an alkylaluminum compound selected from the group consisting of trimethylaluminum and triethylaluminum and (2) a polyfluoroaryl boronic acid.
Claim 9
Dependent Claim
11 words
The process of claim 6 wherein the catalyst system is supported.
Claim 10
Dependent Claim
19 words
The process of claim 7 wherein the support is selected from the group consisting of silicas and aluminum phosphates.
Claim 11
Dependent Claim
24 words
The process of claim 6 wherein the olefin is ethylene or a mixture of ethylene with one or more C 3 -C 20 α-olefins.
Claim 12
Dependent Claim
24 words
The process of claim 9 wherein the olefin is ethylene or a mixture of ethylene with one or more C 3 -C 10 α-olefins.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-08-22 | 2009-02-21 | 2009-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-08-22 | 2013-02-21 | 2013-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-08-22 | 2017-02-21 | 2017-08-23 | $7700.00 | Window Closed / Lapsed |