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US5157008A
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Hydrocarbon solutions of alkylaluminoxane compounds
Assignee: Albemarle Corp
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Filing: 1991-08-01
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Granted: 1992-10-20
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Expires: 2011-08-01
Abstract
Abstract Hydrocarbon solvent solutions of alkylaluminoxane are made by mixing trimethylaluminum and a hydrocarbylaluminum compound, which compound contains at least one hydrocarbyl group having 2 or more carbon atoms, in a hydrocarbon solvent and thereafter adding water or a hydrated compound so as to form a solution of alkylaluminoxane in said solvent.
Inventors
- 👤 Samuel A. Sangokoya
- 👤 Milham S. Howie
- 👤 Aaron L. Dunaway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:45
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/061; C07F5/066; C07F5/068; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
50 words
A process for making a hydrocarbon solvent solution of alkylaluminoxane comprising mixing trimethylaluminum and a trialkylaluminum compound wherein each alkyl group contains 4 to 20 carbon atoms, in a hydrocarbon solvent and thereafter adding water or a hydrated compound so as to form a solution of alkylaluminoxane in said solvent.
Claim 2
Dependent Claim
50 words
A process for making a hydrocarbon solvent solution of alkylaluminoxane comprising mixing trimethylaluminum and a trialkylaluminum compound wherein each alkyl group contains 4 to 20 carbon atoms, in a hydrocarbon solvent and thereafter adding water or a hydrated compound so as to form a solution of alkylaluminoxane in said solvent.
Claim 3
Dependent Claim
26 words
The process according to claim 1 wherein from about 0.5 to 35 mole of trimethylaluminum per mole of trialkylaluminum compound is from about 2:1 to 1:4.
Claim 4
Dependent Claim
17 words
The process according to claim 2 wherein the trialkylaluminum compound is selected from tri-n-hexylaluminum, tri-n-octylaluminum and triisobutylaluminum.
Claim 5
Dependent Claim
56 words
The process according to claim 3 wherein the trialkylaluminum compound is tri-n-octylaluminum, from about 2 to 5 mole of trimethylaluminum per mole of tri-n-octylaluminum are mixed in an aliphatic solvent and the mole ratio of water or water in the hydrate to the total moles of trimethylaluminium and tri-n-octyl aluminum is from about 4:3 to 1:3.5.
Claim 6
Dependent Claim
19 words
The process according to claim 4 wherein the hydrate is selected from LiOH.1H 2 O and LiBr.2H 2 O.
Claim 7
Dependent Claim
50 words
A hydrocarbyl solvent solution of alkylaluminoxane prepared by the process comprising mixing trimethylaluminum and a trialkylaluminum compound wherein each alkyl group contains 4 to 20 carbon atoms, in a hydrocarbon solvent and thereafter adding water or a hydrated compound so as to form a solution of alkylaluminoxane in said solvent.
Claim 8
Dependent Claim
50 words
A hydrocarbyl solvent solution of alkylaluminoxane prepared by the process comprising mixing trimethylaluminum and a trialkylaluminum compound wherein each alkyl group contains 4 to 20 carbon atoms, in a hydrocarbon solvent and thereafter adding water or a hydrated compound so as to form a solution of alkylaluminoxane in said solvent.
Claim 9
Dependent Claim
50 words
The hydrocarbon solvent solution of claim 6 wherein from about 0.5 to 35 mole of trimethylaluminum per mole of trialkylaluminum compound are mixed and the mole ratio of water, or water in the hydrate, to the total moles of trimethylaluminum and hydrocarbyl aluminum compound is from about 2:1 to 1:4.
Claim 10
Dependent Claim
18 words
The hydrocarbon solvent solution of claim 7 wherein the trialkylaluminum compound is selected from tri-n-hexylaluminum, tri-n-octylaluminum and triisobutylaluminum.
Claim 11
Dependent Claim
57 words
The hydrocarbon solvent solution of claim 8 wherein the trialkylaluminum compound is tri-n-octylaluminum, from about 2 to 5 mole of trimethylaluminum per mole of tri-n-octylaluminum are mixed in an aliphatic solvent and the mole ratio of water or water in the hydrate to the total moles of trimethylaluminium and tri-n-octyl aluminum is from about 4:3 to 1:3.5.
Claim 12
Dependent Claim
20 words
The hydrocarbon solvent solution of claim 9 wherein the hydrate is selected from LiOH.1H 2 O and LiBr.2H 2 O.
Claim 13
Dependent Claim
17 words
The process of claim 4 wherein about 5 moles of trimethylaluminum per mole of tri-n-octylaluminum are mixed.
Claim 14
Dependent Claim
19 words
The hydrocarbon solvent solution of claim 6 wherein about 5 moles of trimethylaluminum per mole of tri-n-octylaluminum are mixed.
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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) | 1995-10-20 | 1996-04-20 | 1996-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-20 | 2000-04-20 | 2000-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-20 | 2004-04-20 | 2004-10-20 | $7700.00 | Window Closed / Lapsed |