US5066631A
Expired / Lapsed
US
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Hydrocarbon solutions of alkylaluminoxane compounds
Assignee: Albemarle Corp
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Filing: 1990-10-16
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Granted: 1991-11-19
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Expires: 2010-10-16
Abstract
Abstract A hydrocarbon solvent solution of alkylaluminoxane comprises a hydrocarbon solvent having dissolved therein methylaluminoxane and an effective amount to solubilize the methylaluminoxane in the solvent of tri-n-alkylaluminum wherein the alkyl groups each contain at least two carbon atoms.
Inventors
- 👤 Samuel A. Sangokoya
- 👤 Milham S. Howie
- 👤 Todd A. Trumbo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:06
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/061; C07F5/066; C07F5/068; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/943
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
34 words
A hydrocarbon solvent solution of alkylaluminoxane comprising methylaluminoxane and an effective amount to solubilize said methylaluminoxane in said solvent of a tri-n-alkyl aluminum wherein the alkyl groups each contain at least two carbon atoms.
Claim 2
Dependent Claim
34 words
A hydrocarbon solvent solution of alkylaluminoxane comprising methylaluminoxane and an effective amount to solubilize said methylaluminoxane in said solvent of a tri-n-alkyl aluminum wherein the alkyl groups each contain at least two carbon atoms.
Claim 3
Dependent Claim
13 words
The solution of claim 1 wherein said hydrocarbon solvent is an aliphatic hydrocarbon.
Claim 4
Dependent Claim
48 words
The solution of claim 2 wherein said aliphatic hydrocarbon contains from 5 to 20 carbon atoms, the solution contains from about 5 to 15 wt percent aluminum as methylaluminoxane product, and the mole ratio of aluminum as methylaluminoxane to aluminum as tri-n-alkylaluminum is from about 0.5:1 to 20:1.
Claim 5
Dependent Claim
21 words
The solution of claim 3 wherein the alkyl groups of said tri-n-alkylaluminum each contain from 2 to about 20 carbon atoms.
Claim 6
Dependent Claim
10 words
The solution of claim 3 wherein said tri-n-alkylaluminum is triethylaluminum.
Claim 7
Dependent Claim
10 words
The solution of claim 3 wherein said tri-n-alkylaluminum is tri-n-octylaluminum.
Claim 8
Dependent Claim
23 words
The solution of claim 3 wherein the mole ratio of aluminum as methylaluminoxane to aluminum as tri-n-alkylaluminum is from about 1:1 to 10:1.
Claim 9
Dependent Claim
16 words
The solution of claim 3 wherein said solvent is selected from pentane, isopentane, hexane and n-heptane.
Claim 10
Dependent Claim
16 words
The solution of claim 7 wherein said solvent is selected from pentane, isopentane, hexane and n-heptane
Claim 11
Dependent Claim
12 words
The solution of claim 1 wherein said solvent is an aromatic solvent.
Claim 12
Dependent Claim
49 words
The solution of claim 10 wherein the aromatic hydrocarbon contains from about 6 to 20 carbon atoms, the solution contains from about 5 to 30 wt. percent aluminum as methylaluminoxane product, and the mole ratio of aluminum as methylaluminoxane to aluminum as tri-n-alkylaluminum is from about 1:1 to 35:1.
Claim 13
Dependent Claim
19 words
The solution of claim 11 wherein the alkyl groups of said tri-n-alkylaluminum contain from 2 to 20 carbon atoms.
Claim 14
Dependent Claim
16 words
The solution of claim 11 wherein such solvent is selected from benzene, toluene, xylene and cumene.
Claim 15
Dependent Claim
79 words
A process for making an aliphatic hydrocarbon solvent solution of alkylaluminoxane comprising the steps of: (a) hydrolyzing trimethylaluminum in an aromatic solvent to form a crude methylaluminoxane product, (b) dissolving a tri-n-alkylaluminum compound, wherein the alkyl groups each contain at least 2 carbon atoms, in the aromatic solvent which contains said crude methylaluminoxane product, (c) removing said aromatic solvent from the mixture formed in step (b), and (d) dissolving the residue of step (c) in an aliphatic hydrocarbon solvent.
Claim 16
Dependent Claim
79 words
A process for making an aliphatic hydrocarbon solvent solution of alkylaluminoxane comprising the steps of: (a) hydrolyzing trimethylaluminum in an aromatic solvent to form a crude methylaluminoxane product, (b) dissolving a tri-n-alkylaluminum compound, wherein the alkyl groups each contain at least 2 carbon atoms, in the aromatic solvent which contains said crude methylaluminoxane product, (c) removing said aromatic solvent from the mixture formed in step (b), and (d) dissolving the residue of step (c) in an aliphatic hydrocarbon solvent.
Claim 17
Dependent Claim
49 words
The process of claim 14 wherein said aliphatic hydrocarbon solvent contains from 5 to 20 carbon atoms, said solution contains from about 5 to 15 wt. percent aluminum as methylaluminoxane product and the mole ratio of aluminum as methylaluminoxane to aluminum as tri-n-alkylaluminum is from about 0.5:1 to 20:1.
Claim 18
Dependent Claim
21 words
The process of claim 14 wherein the alkyl groups of said tri-n-alkylaluminum each contain from 2 to about 20 carbon atoms.
Claim 19
Dependent Claim
10 words
The process of claim 14 wherein said tri-n-alkylaluminum is triethylaluminum.
Claim 20
Dependent Claim
10 words
The process of claim 14 wherein said tri-n-alkylaluminum is tri-n-octylaluminum.
Claim 21
Dependent Claim
13 words
The process of claim 14 wherein unhydrolyzed trimethylaluminum is removed in step (c).
References Cited (Backward Citations)
US4794096A
Cited
JPH01258686A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-11-18 | 1995-05-20 | 1995-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-18 | 1999-05-20 | 1999-11-19 | $3760.00 | Window Closed / Lapsed |
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