US5789332A
Expired / Lapsed
US
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Fluidized bed gas phase process of preparing a supported metallocene catalyst
Assignee: Lanxess Organometallics GmbH
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Filing: 1996-08-22
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Granted: 1998-08-04
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Expires: 2016-08-22
Abstract
Abstract The present invention is directed to a gas phase process of preparing a supported metallocene catalyst wherein an alkylaluminum compound, water, a metallocene and, optionally, an olefin are metered into a fluidized bed reactor containing a fluidized bed of an inert support material in the presence of a gas stream.
Inventors
- 👤 Dirk Kutschera
- 👤 Rainer Rieger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:06
CPC Classifications
C; C08; C08F; C08F10/00; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/619; C08F4/61912; C08F4/61916; C08F4/6192; Y; Y10; Y10S; Y10S502/00; Y10S502/523; Y10S526/00; Y10S526/943
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
84 words
A process for the preparation of a metallocene catalyst composition immobilized on an inert support material from reactants including one or more alkylaluminum compounds, water and metallocenes, comprising establishing a fluidized bed wherein solids including said support material are fluidized in a fluidized bed reactor with a fluidizing gas stream, and metering the reactants into said fluidized bed reactor with the gas stream whereupon said reactants react with each other, and after reaction, are fixed to the inert support material from the gas phase.
Claim 2
Dependent Claim
84 words
A process for the preparation of a metallocene catalyst composition immobilized on an inert support material from reactants including one or more alkylaluminum compounds, water and metallocenes, comprising establishing a fluidized bed wherein solids including said support material are fluidized in a fluidized bed reactor with a fluidizing gas stream, and metering the reactants into said fluidized bed reactor with the gas stream whereupon said reactants react with each other, and after reaction, are fixed to the inert support material from the gas phase.
Claim 3
Dependent Claim
26 words
A process according to claim 1 wherein the reactants, solutions thereof or an inert gas stream loaded with the reactants are metered directly into the reactor.
Claim 4
Dependent Claim
22 words
A process according to claim 1 wherein the molar ratio of water: alkylaluminum compounds is in the range from 0.5:1 to 1.5:1.
Claim 5
Dependent Claim
15 words
A process according to claim 1 wherein said one or more alkylaluminum compounds comprises trimethylaluminum.
Claim 6
Dependent Claim
53 words
A process according to claim 1, wherein the support material is selected from the group consisting of Al 2 O 3 , MgO and SiO 2 with particle sizes of 1-300 μm, surface areas of 10-1,000 m 2 /g, pore volumes of 0.5-3 cm 3 , and water contents of 0-15% by weight.
Claim 7
Dependent Claim
107 words
A process for the preparation of a metallocene catalyst composition immobilized on an inert support material from reactants including one or more alkylaluminum compounds, water and metallocenes, comprising establishing a fluidized bed wherein solids including said support material are fluidized in a fluidized bed reactor with a fluidizing gas stream, and metering the reactants into said fluidized bed reactor with the gas stream whereupon said reactants react with each other, and are fixed to the inert support material from the gas phase during the reaction, and then converting the reaction product thereof into a prepolymer without prior isolation by metering an olefin into the fluidized bed reactor.
Claim 8
Dependent Claim
107 words
A process for the preparation of a metallocene catalyst composition immobilized on an inert support material from reactants including one or more alkylaluminum compounds, water and metallocenes, comprising establishing a fluidized bed wherein solids including said support material are fluidized in a fluidized bed reactor with a fluidizing gas stream, and metering the reactants into said fluidized bed reactor with the gas stream whereupon said reactants react with each other, and are fixed to the inert support material from the gas phase during the reaction, and then converting the reaction product thereof into a prepolymer without prior isolation by metering an olefin into the fluidized bed reactor.
Claim 9
Dependent Claim
53 words
A process according to claim 6 wherein the support material is selected from the group consisting of Al 2 O 3 , MgO and SO 2 with particle sizes of 1-300 μm, surface areas of 10-1,000 m 2 /g, pore volumes of 0.5-3 cm 3 , and water contents of 0-15% by weight.
Claim 10
Dependent Claim
26 words
A process according to claim 6 wherein the reactants, solutions thereof or an inert gas stream loaded with the reactants are metered directly into the reactor.
Claim 11
Dependent Claim
22 words
A process according to claim 6 wherein the molar ratio of water: alkylaluminum compounds is in the range from 0.5:1 to 1.5:1.
Claim 12
Dependent Claim
15 words
A process according to claim 6 wherein said one or more alkylaluminum compounds comprises trimethylaluminum.
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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) | 2001-08-03 | 2002-02-02 | 2002-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-03 | 2006-02-02 | 2006-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-03 | 2010-02-02 | 2010-08-04 | $7700.00 | Window Closed / Lapsed |