Patent US5041585A successfully refreshed from Google Patents.
US5041585A
Expired / Lapsed
US
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Preparation of aluminoxanes
Assignee: Texas Alkyls Inc
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Filing: 1990-06-08
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Granted: 1991-08-20
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Expires: 2010-06-08
Abstract
Abstract Aluminoxanes can be produced by contacting an organic solvent containing a trialkylaluminum compound with an atomized spray of water. If desired, a pore-formed aluminoxane can be present as a reaction moderator.
Inventors
- 👤 Dennis L. Deavenport
- 👤 James T. Hodges, III.
- 👤 Dennis B. Malpass
- 👤 Nam H. Tran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:01
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/061; C07F5/066; C07F5/068
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
24 words
A process for the production of an aluminoxane which comprises contacting an organic solvent comprising at least one trialkylaluminum compound with atomized liquid water.
Claim 2
Dependent Claim
24 words
A process for the production of an aluminoxane which comprises contacting an organic solvent comprising at least one trialkylaluminum compound with atomized liquid water.
Claim 3
Dependent Claim
12 words
A process as claimed in claim 1 wherein the trialkylaluminum is trimethylaluminum.
Claim 4
Dependent Claim
14 words
A process as claimed in claim 1 wherein the solvent is an aromatic solvent.
Claim 5
Dependent Claim
12 words
A process as claimed in claim 3 wherein the trialkylaluminum is trimethylaluminum.
Claim 6
Dependent Claim
26 words
A process for the production of an aluminoxane as claimed in any of claims 1-4 wherein the organic solvent also contains a pre-formed aluminoxane reaction moderator.
Claim 7
Dependent Claim
12 words
A process as claimed in claim 5 wherein the moderator is dialkylaluminoxane.
Claim 8
Dependent Claim
13 words
A process as claimed in claim 5 wherein the moderator is a polyalkylaluminoxane.
Claim 9
Dependent Claim
18 words
A process as claimed in any of claims 6-7 wherein the alkyl moiety in the aluminoxane is methyl.
Claim 10
Dependent Claim
27 words
A process as claimed in any of claims 1-4 where the atomized liquid water is injected below the surface of the organic solvent containing the trialkylaluminum compound.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-19 | 1995-02-18 | 1995-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-19 | 1999-02-18 | 1999-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-19 | 2003-02-18 | 2003-08-20 | $7700.00 | Window Closed / Lapsed |