Patent US3853931A successfully refreshed from Google Patents.
US3853931A
Expired / Lapsed
US
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Production of hydrocarbyl aluminum hydrides
Assignee: Alcoa Corp
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Filing: 1973-01-15
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Granted: 1974-12-10
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Expires: 1993-01-15
Abstract
Abstract Promotion of aluminum hydrocarbyl synthesis by use of powder alloys of aluminum and lithium and aluminum and calcium.
Inventors
- 👤 T Kondis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:33
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/061; C07F5/065
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
56 words
IN A PROCESS FOR REACTING ALUMINUM WITH HYDROGEN AND AN OLEFIN OR ALUMINUM HYDROCARYL COMPOUND, THE IMPROVEMENT WHICH COMPRISES REACTING THE HYDROGEN AND THE OLEFIN OR ALUMINUM HYDROCARBYL COMPOUND WITH AN ALUMINUM BASE ALLOY POWDER CONTAINING AT LEAST 98 PERCENT BY WEIGHT ALUMINUM AND 0.1-2.0 PERCENT BY WEIGHT LITHIUM, THEREBY INCREASING THE REACTIVITY OF THE ALUMINUM.
Claim 2
Dependent Claim
56 words
IN A PROCESS FOR REACTING ALUMINUM WITH HYDROGEN AND AN OLEFIN OR ALUMINUM HYDROCARYL COMPOUND, THE IMPROVEMENT WHICH COMPRISES REACTING THE HYDROGEN AND THE OLEFIN OR ALUMINUM HYDROCARBYL COMPOUND WITH AN ALUMINUM BASE ALLOY POWDER CONTAINING AT LEAST 98 PERCENT BY WEIGHT ALUMINUM AND 0.1-2.0 PERCENT BY WEIGHT LITHIUM, THEREBY INCREASING THE REACTIVITY OF THE ALUMINUM.
Claim 3
Dependent Claim
35 words
The improvement of claim 1 wherein the reaction is conducted at a temperature of from about 80* C to about 200* C and at a pressure of from about 60 atmospheres to about 350 atmospheres.
Claim 4
Dependent Claim
18 words
The improvement of claim 1 wherein the hydrogen and the aluminum hydrocarbyl or olefin are present in excess.
Claim 5
Dependent Claim
25 words
The improvement of claim 1 wherein the mole ratio of aluminum base alloy to aluminum hydrocarbyl or olefin is from about 0.1:1 to about 10:1.
Claim 6
Dependent Claim
27 words
The improvement of claim 1 wherein the aluminum base alloy powder is activated by ball milling in the presence of an inert hydrocarbon prior to said reacting.
Claim 7
Dependent Claim
14 words
The improvement of claim 1 wherein the aluminum base alloy powder comprises atomized powder.
Claim 8
Dependent Claim
13 words
The improvement of claim 1 wherein the aluminum hydrocarbyl compound has the formula
Claim 9
Dependent Claim
33 words
The improvement of claim 1 wherein at least one compound selected from the group consisting of an aluminum hydrocarbyl, an aluminum hydrocarbyl hydride and an aluminum hydrocarbyl halide is formed having the formula
Claim 10
Dependent Claim
75 words
In a process for reacting aluminum with hydrogen and an olefin or aluminum hydrocarbyl compound, the improvement which comprises reacting the hydrogen and the olefin or aluminum hydrocarbyl compound with a powder selected from the class consisting of a lithium-aluminum alloy and a calcium-aluminum alloy wherein the amount of lithium or calcium in the alloy is from about 0.1 to about 2 percent by weight of the alloy, thereby increasing the reactivity of the aluminum.
Claim 11
Dependent Claim
75 words
In a process for reacting aluminum with hydrogen and an olefin or aluminum hydrocarbyl compound, the improvement which comprises reacting the hydrogen and the olefin or aluminum hydrocarbyl compound with a powder selected from the class consisting of a lithium-aluminum alloy and a calcium-aluminum alloy wherein the amount of lithium or calcium in the alloy is from about 0.1 to about 2 percent by weight of the alloy, thereby increasing the reactivity of the aluminum.
Claim 12
Dependent Claim
22 words
The process of claim 9 wherein the aluminum content of said lithium-aluminum or calcium-aluminum alloys is at least 98 percent by weight.
References Cited (Backward Citations)
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US3104252A
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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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |