US6759361B2
Expired / Lapsed
US
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Aluminoboronate activators for single-site olefin polymerization catalysts
Assignee: Equistar Chemicals LP
•
Filing: 2001-06-04
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Granted: 2004-07-06
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Expires: 2021-06-04
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
2026-10-30 06:15
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: 17
Claim 1
Independent Claim
45 words
A catalyst system which comprises: (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
45 words
A catalyst system which comprises: (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
16 words
The catalyst system of claim 1 wherein the organometallic complex comprises a Group 4-6 transition metal.
Claim 4
Dependent Claim
16 words
The catalyst system of claim 1 wherein the organometallic complex comprises a Group 4 transition metal.
Claim 5
Dependent Claim
45 words
The catalyst system of claim 1 wherein the indenoindolyl ligand has a structure selected from the group consisting of: in which each ring atom is unsubstituted or substituted with one or more alkyl, aryl, aralkyl, halogen, silyl, nitro, dialkylamino, diarylamino, alkoxy, aryloxy, or thioether groups.
Claim 6
Dependent Claim
32 words
The catalyst system of claim 1 wherein the organometallic complex further incorporates a polymerization-stable ligand selected from the group consisting of cyclopentadienyl, indenyl, fluorenyl, boraaryl, azaborolinyl, carbazolyl, pyrrolyl, indolyl, 8-quinolinoxy, and 2-pyridinoxy.
Claim 7
Dependent Claim
29 words
The catalyst system of claim 1 wherein the organometallic complex incorporates a labile ligand selected from the group consisting of halide, alkyl, aryl, aralkyl, alkoxy, aryloxy, dialkylamino, and siloxy.
Claim 8
Dependent Claim
15 words
The catalyst system of claim 1 wherein the indenoindolyl ligand is bridged to another ligand.
Claim 9
Dependent Claim
20 words
The catalyst system of claim 1 wherein the alkylaluminum compound is selected from the group consisting of trimethylaluminum and triethylaluminum.
Claim 10
Dependent Claim
15 words
The catalyst system of claim 1 wherein the organoboronic acid is a polyfluoroaryl boronic acid.
Claim 11
Dependent Claim
14 words
The catalyst system of claim 9 wherein the polyfluoroaryl boronic acid is pentafluorophenylboronic acid.
Claim 12
Dependent Claim
11 words
The catalyst system of claim 1 further comprising an alkyl alumoxane.
Claim 13
Dependent Claim
8 words
A supported catalyst system of claim 1 .
Claim 14
Dependent Claim
20 words
The catalyst system of claim 12 wherein the support is selected from the group consisting of silicas and aluminum phosphates.
Claim 15
Dependent Claim
57 words
A catalyst system which comprises: (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 comprises the reaction product of (1) an alkylaluminum compound selected from the group consisting of trimethylaluminum and triethylaluminum and (2) a polyfluoroaryl boronic acid.
Claim 16
Dependent Claim
57 words
A catalyst system which comprises: (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 comprises the reaction product of (1) an alkylaluminum compound selected from the group consisting of trimethylaluminum and triethylaluminum and (2) a polyfluoroaryl boronic acid.
Claim 17
Dependent Claim
8 words
A supported catalyst system of claim 14 .
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) | 2007-07-06 | 2008-01-05 | 2008-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-07-06 | 2012-01-05 | 2012-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-07-06 | 2016-01-05 | 2016-07-06 | $7700.00 | Window Closed / Lapsed |