US6933354B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminoboronate activators for single-site olefin polymerization catalysts
Assignee: Equistar Chemicals LP
•
Filing: 2004-03-23
•
Granted: 2005-08-23
•
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 21:04
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.
References Cited (Backward Citations)
US4752597A
Cited
US4791180A
Cited
US5153157A
Cited
US5198401A
Cited
US5241025A
Cited
US5648440A
Cited
US5414180A
Cited
US5539124A
Cited
US5637659A
Cited
US5554775A
Cited
US5637660A
Cited
US5902866A
Cited
US6034027A
Cited
WO1999024446A1
Cited
US6451724B1
Cited
US6211311B1
Cited
US6232260B1
Cited
WO2001053360A1
Cited
US6559251B1
Cited
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 |