US6583242B2
Expired / Lapsed
US
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Supported olefin polymerization catalysts
Assignee: Equistar Chemicals LP
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Filing: 2001-08-02
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Granted: 2003-06-24
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Expires: 2021-08-02
Abstract
Abstract A supported olefin polymerization catalyst system and a method of making it are disclosed. The catalyst system comprises: (a) a support having mean particle size less than about 30 microns chemically treated with alumoxane; (b) an organometallic complex comprising a Group 3 to 10 transition or lanthanide metal, M, and at least one indenoindolyl ligand that is π-bonded to M; and (c) an activator. Chemical treatment with alumoxane and support mean particle size less than 30 microns are key to making supported indenoindolyl containing catalysts having high activity.
Inventors
- 👤 Shaotian Wang
- 👤 Norma J. Maraschin
- 👤 Debra L. Beran
- 👤 William J. Sartain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:12
CPC Classifications
C; C08; C08F; C08F10/00; C08F210/00; C08F210/16; C08F2420/00; C08F2420/05; C08F2420/06; 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; Y10S526/904; Y10S526/943
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
84 words
A catalyst system which comprises: (a) a support having mean particle size less than about 30 microns, wherein the support is chemically treated with alumoxane by adding the alumoxane to the support in an amount in the range of about 0.1 to 20 mmoles of aluminum contained in the alumoxane per gram of support; (b) an organometallic complex comprising a Group 3 to 10 transition or lanthanide metal, M, and at least one indenoindolyl ligand that is π-bonded to M; and (c) an activator.
Claim 2
Dependent Claim
84 words
A catalyst system which comprises: (a) a support having mean particle size less than about 30 microns, wherein the support is chemically treated with alumoxane by adding the alumoxane to the support in an amount in the range of about 0.1 to 20 mmoles of aluminum contained in the alumoxane per gram of support; (b) an organometallic complex comprising a Group 3 to 10 transition or lanthanide metal, M, and at least one indenoindolyl ligand that is π-bonded to M; and (c) an activator.
Claim 3
Dependent Claim
20 words
The catalyst system of claim 1 wherein the support has a mean particle size of less than about 25 microns.
Claim 4
Dependent Claim
28 words
The catalyst system of claim 1 wherein the support is selected from the group consisting of silicas, aluminas, silica-aluminas, titanias, zirconias, magnesias, magnesium chloride, polystyrene, and mixtures thereof.
Claim 5
Dependent Claim
11 words
The catalyst system of claim 1 wherein the support is silica.
Claim 6
Dependent Claim
31 words
The catalyst system of claim 1 wherein the support is heated at a temperature within the range of about 50° C. to about 1000° C. before or after the chemical treatment.
Claim 7
Dependent Claim
31 words
The catalyst system of claim 1 wherein the support is dried in vacuum at a temperature within the range of about 20° C. to about 50° C. after the chemical treatment.
Claim 8
Dependent Claim
14 words
The catalyst system of claim 1 wherein M is a Group 4-6 transition metal.
Claim 9
Dependent Claim
14 words
The catalyst system of claim 1 wherein M is a Group 4 transition metal.
Claim 10
Dependent Claim
23 words
The catalyst system of claim 1 wherein the activator is selected from the group consisting of alumoxanes, neutral boron compounds, and ionic borates.
Claim 11
Independent Claim
65 words
A method which comprises: (a) treating a support, having mean particle size less than about 30 microns, with an effective amount of alumoxane; and (b) combining the treated support with an organometallic complex comprising a Group 3 to 10 transition or lanthanide metal, M, and at least one indenoindolyl ligand that is π-bonded to M, and optionally with an activator, to produce a supported catalyst.
Claim 12
Independent Claim
65 words
A method which comprises: (a) treating a support, having mean particle size less than about 30 microns, with an effective amount of alumoxane; and (b) combining the treated support with an organometallic complex comprising a Group 3 to 10 transition or lanthanide metal, M, and at least one indenoindolyl ligand that is π-bonded to M, and optionally with an activator, to produce a supported catalyst.
Claim 13
Dependent Claim
27 words
The method of claim 10 wherein the support is selected from the group consisting of silicas, aluminas, silica-aluminas, titanias, zirconias, magnesias, magnesium chloride, polystyrene, and mixtures thereof.
Claim 14
Dependent Claim
10 words
The method of claim 10 wherein the support is silica.
Claim 15
Dependent Claim
29 words
The method of claim 10 wherein the support is heated at a temperature within the range of about 50° C. to about 1000° C. prior to treatment with alumoxane.
Claim 16
Dependent Claim
36 words
The method of claim 10 wherein the treated support from step (a) is heated at a temperature within the range of about 50° C. to about 1000° C. prior to combining it with the organometallic complex.
Claim 17
Dependent Claim
38 words
The method of claim 10 wherein the treated support from step (a) is dried in vacuum at a temperature within the range of about 20° C. to about 50° C. prior to combining it with the organometallic complex.
Claim 18
Dependent Claim
13 words
The method of claim 10 wherein M is a Group 4-6 transition metal.
Claim 19
Dependent Claim
13 words
The method of claim 10 wherein M is a Group 4 transition metal.
Claim 20
Dependent Claim
18 words
A process which comprises polymerizing an olefin in the presence of the catalyst system of claim 1 .
Claim 21
Dependent Claim
24 words
A process which comprises copolymerizing ethylene with a C 3 -C 10 α-olefin in the presence of the catalyst system of claim 1 .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2006-06-23 | 2006-12-23 | 2007-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-06-23 | 2010-12-23 | 2011-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-06-23 | 2014-12-23 | 2015-06-24 | $7700.00 | Window Closed / Lapsed |