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US3751566A
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Preparation of aluminum hydride by reaction of an alkali metal hydride with boron trichloride
Assignee: United States Department of the Army
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Filing: 1969-01-15
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Granted: 1973-08-07
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Expires: 1989-01-15
Abstract
Abstract A NOVEL PROCESS FOR THE PREPARATIIN OF ALUMINUM HYDRIDE. THE PROCESS UTILIZES THE REACTION OF AN ALKALI METAL ALUMINUM HYDRIDE WITH A BORON TRIHALIDE. TYPICALLY, THE ALKALI METAL IS SODIUM OR LITHIUM AND THE HALOGEN IS CHLORINE. THE PROCESS IS CONDUCTED IN THE PRESENCE OF AN ETHER SUCH AS DIETHYL ETHER, FOLLOWED BY REMOVAL OF THE PRECIPITATE OF THE ALKALI METAL HALIDE, DILUTION OF THE SOLUTION WITH AN AROMATIC SOLVENT, AND HEATING TO REMOVE ETHER, EFFECT CRYSTALLIZATION AND CONVERT TO THE STABLE FORM OF ALUMINUM HYDRIDE. THE PRODUCT IS USEFUL AS A SOLID PROPELLANT INGREDIENT.
Inventors
- 👤 J Churchill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:14
CPC Classifications
C; C01; C01B; C01B6/00; C01B6/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |