US2931820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aluminium alkyls
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1958-05-16
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Granted: 1960-04-05
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Expires: 1978-05-16
Abstract
No abstract record available.
Inventors
- 👤 Barclay William
- 👤 Smith Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:02
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/061; C07F5/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A PROCESS FOR THE PRODUCTION OF AN ALUMINIUM ALKYL BY REACTING ALUMINUM WITH A PRMIARY ALKYL HALIDE IN THE PRESENCE OF AN INERT SOLVENT AND THEN REACTING THE SOLUTION OF THE ALKYL ALUMINIUM SESQUIHALIDE THUS FORMED WITH AN ALKALI METAL TO GIVE A REACTION PRODUCT COMPRISING ALUMINIUM AND A SOLUTION OF AN ALUMINIUM ALKYL THE STEP OF REACTING AT A TEMPERATURE ABOVE 50*C. THE SAID REACTION PRODUCT IN THE ABSENCE OF ADDED ALUMINIUM WITH A PRIMARY ALKYL HALIDE SELECTED FROM THE GROUP CONSISTING OF METHYL CHLORIDE, METHYL BROMIDE, METHYL IODIDE, ETHYL CHLORIDE, ETHYL BROMIDE, ETHYL IODIDE, PROPYL BROMIDE, PROPYL IODIDE, N-BUTYL BROMIDE, N-BUTYL IODIDE, ISOBUTYL IODIDE, TO FORM AN ALKYL ALUMINIUM SESQUIHALIDE AND THEN REACTING THIS ALKYL ALUMINIUM SESQUIHALIDE IN SITU WITH AND ALKALI METAL TO GIVE A SECOND REACTION PRODUCT CONTAINING ADDITIONAL QUANTITIES OF THE ALUMINIUM ALKYL.
Claim 2
Dependent Claim
139 words
IN A PROCESS FOR THE PRODUCTION OF AN ALUMINIUM ALKYL BY REACTING ALUMINUM WITH A PRMIARY ALKYL HALIDE IN THE PRESENCE OF AN INERT SOLVENT AND THEN REACTING THE SOLUTION OF THE ALKYL ALUMINIUM SESQUIHALIDE THUS FORMED WITH AN ALKALI METAL TO GIVE A REACTION PRODUCT COMPRISING ALUMINIUM AND A SOLUTION OF AN ALUMINIUM ALKYL THE STEP OF REACTING AT A TEMPERATURE ABOVE 50*C. THE SAID REACTION PRODUCT IN THE ABSENCE OF ADDED ALUMINIUM WITH A PRIMARY ALKYL HALIDE SELECTED FROM THE GROUP CONSISTING OF METHYL CHLORIDE, METHYL BROMIDE, METHYL IODIDE, ETHYL CHLORIDE, ETHYL BROMIDE, ETHYL IODIDE, PROPYL BROMIDE, PROPYL IODIDE, N-BUTYL BROMIDE, N-BUTYL IODIDE, ISOBUTYL IODIDE, TO FORM AN ALKYL ALUMINIUM SESQUIHALIDE AND THEN REACTING THIS ALKYL ALUMINIUM SESQUIHALIDE IN SITU WITH AND ALKALI METAL TO GIVE A SECOND REACTION PRODUCT CONTAINING ADDITIONAL QUANTITIES OF THE ALUMINIUM ALKYL.
References Cited (Backward Citations)
BE535085A
Cited
FR1120572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |