US5721184A
Expired / Lapsed
US
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Method for making supported catalyst systems and catalyst systems therefrom
Assignee: Aventis Research and Technologies GmbH and Co KG
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Filing: 1996-08-27
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Granted: 1998-02-24
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Expires: 2016-08-27
Abstract
Abstract Catalyst systems and methods for supporting catalysts and their components, particularly metallocene catalyst components, are provided. The method involves techniques for evenly distributing a small volume of catalyst component over and among a porous support material. Such even distribution is thought to result in reduced fouling.
Inventors
- 👤 Jeffrey Lawrence Brinen
- 👤 Anthony Nicholas Speca
- 👤 Kelly Tormaschy
- 👤 Kathryn Ann Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:59
CPC Classifications
C; C08; C08F; C08F10/00; C08F210/00; C08F210/14; C08F210/16; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F4/659; C08F4/65912; C08F4/6592; C08F4/65922; C08F4/65927; Y; Y10; Y10S; Y10S526/00; Y10S526/943
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
42 words
A process for producing a supported catalyst comprising first applying catalyst solution which comprises a metallocene catalyst component to porous support material wherein said support material is disposed in a conical dryer and thereafter drying the supported catalyst in the same dryer.
Claim 2
Dependent Claim
42 words
A process for producing a supported catalyst comprising first applying catalyst solution which comprises a metallocene catalyst component to porous support material wherein said support material is disposed in a conical dryer and thereafter drying the supported catalyst in the same dryer.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein the catalyst solution comprises a metallocene and an alumoxane.
Claim 4
Dependent Claim
17 words
The process of claim 1 wherein the catalyst solution consists essentially of a metallocene and an alumoxane.
Claim 5
Dependent Claim
24 words
The process of claim 1 wherein the volume of catalyst solution is less than about 2.0 times the pore volume of the porous support.
Claim 6
Dependent Claim
26 words
The process of claim 1 wherein the ratio of the volume of catalyst solution to the total pore volume ranges from about 1.2:1 to about 1.8:1.
Claim 7
Dependent Claim
24 words
The process of claim 1 wherein the volume of catalyst solution is less than about 1.5 times the pore volume of the porous support.
Claim 8
Dependent Claim
24 words
The process of claim 1 wherein the volume of catalyst solution is less than about 1.0 times the pore volume of the porous support.
Claim 9
Dependent Claim
32 words
The process of claim 1 wherein the total volume of catalyst solution contacted with the support at any one time is less than that volume of solution required to form a slurry.
Claim 10
Dependent Claim
17 words
The process of claim 1 wherein the porous support is mixed while contacted with the catalyst solution.
Claim 11
Dependent Claim
17 words
The process of claim 1 wherein the porous support is mixed after contact with the catalyst solution.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-02-23 | 2001-08-25 | 2002-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-23 | 2005-08-25 | 2006-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-23 | 2009-08-25 | 2010-02-24 | $7700.00 | Window Closed / Lapsed |