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US3717666A
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Process for producing aluminum alkoxides
Assignee: Ethyl Corp
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Filing: 1971-02-16
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Granted: 1973-02-20
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Expires: 1991-02-16
Abstract
Abstract It is disclosed that the reaction of aluminum and alcohol to produce aluminum hydrocarbyl oxides is improved by catalysis with alkoxy alcohol.
Inventors
- 👤 P Kobetz
- 👤 H Shapiro
- 👤 F Impastato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:14
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/069; C07C; C07C29/00; C07C29/68; C07C29/70
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
135 words
In a process for producing aluminum alkoxides by reaction of aluminum and an alcohol of the formula: wherein R1, R2 and R3 are H or alkyl radical each said alkyl radical having from one to about 20 carbon atoms, the improvement wherein the reaction is catalyzed by: alkoxy alcohol of the formula: wherein R4 is lower alkyl, aryl, alicyclic, aralkyl, alkaryl, or alkenyl radical having from one to about six carbon atoms, R5 and R6 are H, or lower alkyl radical having from one to about six carbon atoms, at least one of R5 and R6 being H, R6 optionally being a part of a ring with R4, n is from 1 to about 5, the amount of the catalyst being from about 1.0 to about 30 percent by weight based on the aluminum reacted.
Claim 2
Dependent Claim
135 words
In a process for producing aluminum alkoxides by reaction of aluminum and an alcohol of the formula: wherein R1, R2 and R3 are H or alkyl radical each said alkyl radical having from one to about 20 carbon atoms, the improvement wherein the reaction is catalyzed by: alkoxy alcohol of the formula: wherein R4 is lower alkyl, aryl, alicyclic, aralkyl, alkaryl, or alkenyl radical having from one to about six carbon atoms, R5 and R6 are H, or lower alkyl radical having from one to about six carbon atoms, at least one of R5 and R6 being H, R6 optionally being a part of a ring with R4, n is from 1 to about 5, the amount of the catalyst being from about 1.0 to about 30 percent by weight based on the aluminum reacted.
Claim 3
Dependent Claim
36 words
In a process in accordance with claim 1, the further improvement wherein the reaction is conducted in the presence of an aromatic alicyclic or aliphatic hydrocarbon diluent or in the presence of an excess of alcohol.
Claim 4
Dependent Claim
26 words
In a process in accordance with claim 1, the further limitation that the process is conducted at a temperature of from about 25*C. to about 180*C.
Claim 5
Dependent Claim
34 words
In a process in accordance with claim 1, the further limitation that the amount of diluent or excess alcohol is from about 0.5 to about 10 parts by volume per part of alcohol reacted.
Claim 6
Dependent Claim
18 words
A process in accordance with claim 1 conducted at a temperature of from about 80*C. to about 150*C.
Claim 7
Dependent Claim
18 words
A process in accordance with claim 1 conducted at a temperature of from about 100*C. to about 130*C.
Claim 8
Dependent Claim
14 words
A process in accordance with claim 1 conducted at a temperature of about 110*C.
Claim 9
Dependent Claim
19 words
A process in accordance with claim 2 conducted at reflux of the diluent or alcohol at about atmospheric pressure.
Claim 10
Dependent Claim
28 words
A process in accordance with claim 1 wherein the amount of the catalyst is from about 5 to about 20 percent by weight based on the aluminum reacted.
Claim 11
Dependent Claim
24 words
A process in accordance with claim 1 wherein the amount of the catalyst is about 10 percent by weight based on the aluminum reacted.
Claim 12
Dependent Claim
17 words
A process in accordance with claim 1 wherein the alcohol has straight chain unbranched carbon skeletal structure.
Claim 13
Dependent Claim
12 words
A process in accordance with claim 1 wherein the alcohol is ethanol.
Claim 14
Dependent Claim
12 words
A process in accordance with claim 1 wherein the alcohol is isopropanol.
Claim 15
Dependent Claim
42 words
A process in accordance with claim 1 wherein the catalyst is of the formula: HO(CH2CH2O)nR1 wherein R1 is lower alkyl, aryl, alicyclic, aralkyl, alkaryl or alkenyl radical having from one to about six carbon atoms, n is from 1 to about 5.
Claim 16
Dependent Claim
17 words
A process in accordance with claim 1 wherein the catalyst is HO(CH2CH2O)CH3, or HO(CH2CH2O)2CH3 or tetrahydrofurfuryl alcohol.
Claim 17
Dependent Claim
32 words
The process of claim 2 wherein the diluent is toluene and the catalyst is HOCH2CH2OCH3 and the temperature of the reaction is controlled at reflux of the toluene at about atmospheric pressure.
Claim 18
Dependent Claim
91 words
The process of claim 2 wherein the diluent iS toluene in an amount from about 3 to about 5 parts by volume per part of alcohol fed, the catalyst is HOCH2CH2OCH3 in an amount of from about 10 to about 15 percent by weight based on the aluminum fed, the reaction temperature is controlled at reflux of the toluene at about atmospheric pressure, the alcohol is ethanol and the alcohol is supplied in an amount of from about 0 to about 5 percent excess above stoichiometric relative to the aluminum fed.
Claim 19
Dependent Claim
91 words
The process of claim 2 wherein the diluent is toluene in an amount from about 3 to about 5 parts by volume per part of alcohol fed, the catalyst is HOCH2CH2OCH3 in an amount of from about 10 to about 15 percent by weight based on the aluminum fed, the reaction temperature is controlled at reflux of the toluene at about atmospheric pressure, the alcohol is isopropanol and the alcohol is supplied in an amount of from about 0 to about 5 percent excess above stoichiometric relative to the aluminum fed.
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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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |