US2773092A
Expired / Lapsed
US
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Dimerization process
Assignee: Ethyl Corp
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Filing: 1954-12-06
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Granted: 1956-12-04
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Expires: 1974-12-06
Abstract
No abstract record available.
Inventors
- 👤 David R Carley
- 👤 Walter E Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:50
CPC Classifications
C; C07; C07F; C07F1/00; B; B01; B01J; B01J16/00; C07C; C07C29/00; C07C29/36; C07C29/38; C07C29/40; C07C51/00; C07C51/15; C07C51/347; C07C51/36; C07C57/00; C07C57/02; C07C57/13; C08; C08F; C08F2/00; C08F2/36
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
119 words
THE PROCESS FOR DIMERIZATION OF A CONJUGATED HYDROCARBON POLYENE IN THE PRESENCE OF AN ALKALI METAL TO PRODUCE A DIALKALI METAL POLYENE ADDUCT COMPRISING ADDING A CONJUGATED POLYENE HAVING BETWEEN 4 TO 16 CARBON ATOMS TO A REACTION MEDIUM MAINTAINED AT A TEMPERATURE BELOW ABOUT 50* C. CONTAINING FINELY DISPERSED ALKALI METAL HAVING A PARTICLE SIZE NOT GREATER THAN 50 MICRONS, BETWEEN ABOUT 0.0001 AND 10 PERCENT OF A DIARYL KETONE AND AT LEAST 30 PERCENT OF AN ALIPHATIC SOLVENT SELECTED FROM THE GROUP CONSISTING ETHERS, ACETALS AND TERTIARY AMINES, BOTH PERCENTAGES BEING BASED UPON THE WEIGHT OF SAID ALKALI METAL, SAID POLYENE BEING EMPLOYED IN A TOTAL QUANTITY NOT EXCEEDING ABOUT 1 MOLR PER MOLE OF ALKALI METAL.
Claim 2
Dependent Claim
119 words
THE PROCESS FOR DIMERIZATION OF A CONJUGATED HYDROCARBON POLYENE IN THE PRESENCE OF AN ALKALI METAL TO PRODUCE A DIALKALI METAL POLYENE ADDUCT COMPRISING ADDING A CONJUGATED POLYENE HAVING BETWEEN 4 TO 16 CARBON ATOMS TO A REACTION MEDIUM MAINTAINED AT A TEMPERATURE BELOW ABOUT 50* C. CONTAINING FINELY DISPERSED ALKALI METAL HAVING A PARTICLE SIZE NOT GREATER THAN 50 MICRONS, BETWEEN ABOUT 0.0001 AND 10 PERCENT OF A DIARYL KETONE AND AT LEAST 30 PERCENT OF AN ALIPHATIC SOLVENT SELECTED FROM THE GROUP CONSISTING ETHERS, ACETALS AND TERTIARY AMINES, BOTH PERCENTAGES BEING BASED UPON THE WEIGHT OF SAID ALKALI METAL, SAID POLYENE BEING EMPLOYED IN A TOTAL QUANTITY NOT EXCEEDING ABOUT 1 MOLR PER MOLE OF ALKALI METAL.
Claim 3
Dependent Claim
32 words
THE PROCESS OF CLAIM 1 WHEREIN THE REACTION MIXTURE SO-FORMED, INCLUDING SAID DIARYL KETONE, IS THEREAFTER TREATED WITH A GRINGARD REACTANT SELECTED FROM THE GROUP CONSISTING OF CARBONYL, THIONYL AND NITRILE COMPOUNDS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |