US3048610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making tetramethyl lead
Assignee: EIDP Inc
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Filing: 1960-08-19
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Granted: 1962-08-07
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Expires: 1980-08-19
Abstract
No abstract record available.
Inventors
- 👤 John M S Jarvie
- 👤 Mathias J Schuler
- 👤 Jr John D Sterling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:08
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
218 words
THE PROCESS FOR MAKING TETRAMETHYL LEAD WHICH COMPRISES MIXING AT A TEMPERATURE BELOW 50*C. A SODIUM LEAD ALLOY, AT LEAST ABOUT 0.25 MOLE PER MOLE OF SODIUM OF AN ALKYLATING AGENT WHICH CONSISTS OF A METHYL HALIDE IN WHICH THE HALOGEN HAS AN ATOMIC NUMBER IN THE RANGE OF 17 TO 53, FRAOM ABOUT 0.05% TO ABOUT 5% BY WEIGHT, BASED ON SAID ALLOY, OF AN ALUMINUM HALIDE IN WHICH THE HALOGEN HAS AN ATOMIC NUMBER IN THE RANGE OF 17 TO 53, AND FROM ABOUT 0.1 TO ABOUT 100 PARTS PER PART OF ALUMINUM HALIDE OF AN ORGANOLEAD COMPOUND OF THE CLASS CONSISTING OF HYDROCARBON LEADS AND HYDROCARBON LEAD HALIDES IN WHICH THE HALOGEN HAS AN ATOMIC NUMBER IN THE RANGE OF 17 TO 53 AND THE HYDROCARBON GROUPS CONTAIN 1 TO 10 CARABON ATOMS AND ARE SELECTED FROM ALKYL, ALKENYL AND ARYL RADICALS, HEATING THE MIXTURE TO A TEMPERATURE OF FROM 50*C. TO ABOUT 70*C. TO INITIATE THE METHYLATION REACTION, AND TAHEN HEATING THE MIXTURE TO A TEMPERATURE OF FROM ABOUT 70*C. TO ABOUT 130*C. AND MAINTAINING IT AT SUCH TEMPERATURE UNTIL THE METHYLATION REACTION IS SUBSTANTIALLY COMPLET WHILE GRADUALLY ADDING SUCH QUANTITIES OF SAID MWTHYL HALIDE AS MAY BE REQUIRED TO PROVIDE A TOTAL OF AT LEAST ONE MOLE THEREOF FOR EACH MOLE OF SODIUM.
Claim 2
Dependent Claim
218 words
THE PROCESS FOR MAKING TETRAMETHYL LEAD WHICH COMPRISES MIXING AT A TEMPERATURE BELOW 50*C. A SODIUM LEAD ALLOY, AT LEAST ABOUT 0.25 MOLE PER MOLE OF SODIUM OF AN ALKYLATING AGENT WHICH CONSISTS OF A METHYL HALIDE IN WHICH THE HALOGEN HAS AN ATOMIC NUMBER IN THE RANGE OF 17 TO 53, FRAOM ABOUT 0.05% TO ABOUT 5% BY WEIGHT, BASED ON SAID ALLOY, OF AN ALUMINUM HALIDE IN WHICH THE HALOGEN HAS AN ATOMIC NUMBER IN THE RANGE OF 17 TO 53, AND FROM ABOUT 0.1 TO ABOUT 100 PARTS PER PART OF ALUMINUM HALIDE OF AN ORGANOLEAD COMPOUND OF THE CLASS CONSISTING OF HYDROCARBON LEADS AND HYDROCARBON LEAD HALIDES IN WHICH THE HALOGEN HAS AN ATOMIC NUMBER IN THE RANGE OF 17 TO 53 AND THE HYDROCARBON GROUPS CONTAIN 1 TO 10 CARABON ATOMS AND ARE SELECTED FROM ALKYL, ALKENYL AND ARYL RADICALS, HEATING THE MIXTURE TO A TEMPERATURE OF FROM 50*C. TO ABOUT 70*C. TO INITIATE THE METHYLATION REACTION, AND TAHEN HEATING THE MIXTURE TO A TEMPERATURE OF FROM ABOUT 70*C. TO ABOUT 130*C. AND MAINTAINING IT AT SUCH TEMPERATURE UNTIL THE METHYLATION REACTION IS SUBSTANTIALLY COMPLET WHILE GRADUALLY ADDING SUCH QUANTITIES OF SAID MWTHYL HALIDE AS MAY BE REQUIRED TO PROVIDE A TOTAL OF AT LEAST ONE MOLE THEREOF FOR EACH MOLE OF SODIUM.
References Cited (Backward Citations)
US2270109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |