Patent US3812244A successfully refreshed from Google Patents.
US3812244A
Expired / Lapsed
US
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Preparation of aluminum hydride
Assignee: Dow Chemical Co
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Filing: 1966-03-22
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Granted: 1974-05-21
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Expires: 1986-03-22
Abstract
Abstract A novel method for preparing metal hydrides, particularly aluminum hydride and aluminum halohydrides, by the direct reaction of a metal hydride with a metal chloride. In one embodiment carrier liquids which are a non-solvent for the metal hydride reactant can be employed.
Inventors
- 👤 D Schmidt
- 👤 A Daniels
- 👤 R Petrella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:30
CPC Classifications
C; C01; C01B; C01B6/00; C01B6/24; C01B6/003; C01B6/006; C01B6/04; C01B6/06; C01B6/243
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
127 words
A process for preparing aluminum hydrides which comprises: a. admixing an aluminum chloride reactant and magnesium hydride in an amount about stoichiometric of that required to react completely in the preparation of aluminum hydrides, said aluminum chloride being supplied from an aluminum chloride-sodium chloride-potassium chloride eutectic having a composition of about 66 mole per cent aluminum chloride, about 20 mole per cent sodium chloride and about 14 mole per cent potassium chloride, b. grinding said mixture in a ball mill for at least about 12 hours at about room temperature, c. extracting the solid product mixture with diethyl ether, d. separating the resulting ether extract from residual solids, and e. removing the diethyl ether from the ether extract thereby recovering aluminum hydrides from said diethyl ether extract.
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) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |