Patent US2799705A successfully refreshed from Google Patents.
US2799705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted sodium amides
Assignee: Ethyl Corp
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Filing: 1954-06-28
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Granted: 1957-07-16
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Expires: 1974-06-28
Abstract
No abstract record available.
Inventors
- 👤 Pree David O De
- 👤 Eugene F Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:17
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A PROCESS FOR RAPIDLY PREPARING SODIUM AMIDES COMPRISING REACTING IN A MEDIUM IN WHICH SAID AMIDE IS INSOLUBLE, A DISPERSION OF FINELY DIVIDED METALLIC SODIUM PARTICLES WITH AN AMINE HAVING AT LEAST ONE HYDROGEN ATOM BONDED TO AN AMINO NITROGEN ATOM AND SELECTED FROM THE CLASS SCONSISTING OF ALKYL AMINES, PHENYL AMINES LOWER ALKYL-SUBSTITUTED PHENYL AMINES, CYCLIC AMINES SELECTED FROM THE CLASS CONSISTING OF CYCLOHEXYL AND LOWER ALKYL SUBSTITUTED CYCLOHEXYL AMINES AND HETEROCYCLIC AMINES SELECTED FROM THE CLASS OF PYRIDINE AND PIPERIDINE AMINES, THE SODIUM PARTICLES BEING FROM ABOUT 1 TO 50 MICRONS IN SIZE AND CONSTITUTING BETWEEN ABOUT 10 AND 65 PERCENT BY WEIGHT OF THE DISPERSION, THE REACTION MIXTURE CONSISTING OF SAID SODIUM,SAID AMINE, A CONJUGATED POLYENE HYFROGEN ACCEPTOR, AND A DILUENT SELECTED FROM THE CLASS CONSISTING OF INERT LIQUID HYDROCARBONS AND AN EXCESS OF SAID AMINE, THE REACTION BEING CARRIED OUT AT A TEMPERATURE BETWEEN ABOUT 35*C. AND -20*C. FOR A PERIOD UP TO ABOUT 25 MINUTES TO FORM THE SODIUM AMIDE AS A SOLID INSOLUBLE IN THE REACTED MIXTURE, AND THE INSOLUBLE SOLID PRODUDCT IS MECHANICALLY SEPARATED FROM THE REACTED MIXTURE.
Claim 2
Dependent Claim
185 words
A PROCESS FOR RAPIDLY PREPARING SODIUM AMIDES COMPRISING REACTING IN A MEDIUM IN WHICH SAID AMIDE IS INSOLUBLE, A DISPERSION OF FINELY DIVIDED METALLIC SODIUM PARTICLES WITH AN AMINE HAVING AT LEAST ONE HYDROGEN ATOM BONDED TO AN AMINO NITROGEN ATOM AND SELECTED FROM THE CLASS SCONSISTING OF ALKYL AMINES, PHENYL AMINES LOWER ALKYL-SUBSTITUTED PHENYL AMINES, CYCLIC AMINES SELECTED FROM THE CLASS CONSISTING OF CYCLOHEXYL AND LOWER ALKYL SUBSTITUTED CYCLOHEXYL AMINES AND HETEROCYCLIC AMINES SELECTED FROM THE CLASS OF PYRIDINE AND PIPERIDINE AMINES, THE SODIUM PARTICLES BEING FROM ABOUT 1 TO 50 MICRONS IN SIZE AND CONSTITUTING BETWEEN ABOUT 10 AND 65 PERCENT BY WEIGHT OF THE DISPERSION, THE REACTION MIXTURE CONSISTING OF SAID SODIUM,SAID AMINE, A CONJUGATED POLYENE HYFROGEN ACCEPTOR, AND A DILUENT SELECTED FROM THE CLASS CONSISTING OF INERT LIQUID HYDROCARBONS AND AN EXCESS OF SAID AMINE, THE REACTION BEING CARRIED OUT AT A TEMPERATURE BETWEEN ABOUT 35*C. AND -20*C. FOR A PERIOD UP TO ABOUT 25 MINUTES TO FORM THE SODIUM AMIDE AS A SOLID INSOLUBLE IN THE REACTED MIXTURE, AND THE INSOLUBLE SOLID PRODUDCT IS MECHANICALLY SEPARATED FROM THE REACTED MIXTURE.
References Cited (Backward Citations)
US2141058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |