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Patent US2848472A successfully refreshed from Google Patents.
US2848472A
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Preparation of alkyl aluminum dihalides
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1955-08-12
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Granted: 1958-08-19
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Expires: 1975-08-12
Abstract
No abstract record available.
Inventors
- 👤 Delmer L Cottle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:39
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/061; C07F5/064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD FOR PREPARING ALKYL ALUMINUM DIHALIDES WHICH COMPRISES REACTING TOGETHER (1) ABOUT 3 MOLES OF ALKYL HALIDE SELECTED FROM THE GROUP CONSISTING OF METHYL HALIDES AND ETHYL HALIDES, (2) ABOUT 2 ATOMS OF ALUMINUM METAL AND (3) ABOUT 1 MOLE OF ALUMINUM HALIDE, SAID HALIDE BEING SELECTED FROM THE GROUP CONSISTING OF CHLORIDES, BROMIDES AND IODIDES, SAID REACTION BEING CARRIED OUT AT A TEMPERATURE IN THE RANGE OF ABOUT 20* TO 125* C. FOR ABOUT 4 TO 24 HOURS, AND RECOVERING ALKYL ALUMINUM DIHALIDE AS A PRODUCT FROM THE RESULTANT REACTION MIXTURE.
Claim 2
Independent Claim
93 words
A METHOD FOR PREPARING ALKYL ALUMINUM DIHALIDES WHICH COMPRISES REACTING TOGETHER (1) ABOUT 3 MOLES OF ALKYL HALIDE SELECTED FROM THE GROUP CONSISTING OF METHYL HALIDES AND ETHYL HALIDES, (2) ABOUT 2 ATOMS OF ALUMINUM METAL AND (3) ABOUT 1 MOLE OF ALUMINUM HALIDE, SAID HALIDE BEING SELECTED FROM THE GROUP CONSISTING OF CHLORIDES, BROMIDES AND IODIDES, SAID REACTION BEING CARRIED OUT AT A TEMPERATURE IN THE RANGE OF ABOUT 20* TO 125* C. FOR ABOUT 4 TO 24 HOURS, AND RECOVERING ALKYL ALUMINUM DIHALIDE AS A PRODUCT FROM THE RESULTANT REACTION MIXTURE.
References Cited (Backward Citations)
US2270292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |