US2495085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of sulfenamides
Assignee: Bridgestone Firestone Inc
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Filing: 1946-09-07
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Granted: 1950-01-17
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Expires: 1966-09-07
Abstract
No abstract record available.
Inventors
- 👤 Alliger Glen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:56
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/60; C07D277/62; C07D277/68; C07D277/70; C07D277/76; C07D277/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
THE PROCESS OF PRODUCING AN N-MONO SUBSTITUTED SULFENAMIDE WHICH COMPRISES REACTING A HYPOHALITE OF THE CLASS CONSISTING OF THE ALKALI METAL AND ALKALINE EARTH METAL HYPOHALITES WITH A PRIMARY AMINE TO PRODUCE AN N-MONOCHLORO PRIMARY AMINE AND MIXING THE RESULTANT REACTION MIXTURE AND A MERCAPIDE OF THE CLASS CONSISTING OF THE ALKALI METAL AND ALKALINE EARTH METAL MERCAPTIDES, USING A MINIMAL AMOUNT OF WATER SO THAT DURING THE REACTION WITH THE MERCAPTIDE THERE IS ONLY A MINIMAL QUANTITY OF THE N-MONOCHLORO PRIMARY AMINE IN AQUEOUS SOLUTION, MAINTAINING A TEMPERATURE OF NOT OVER ABOUT 10*C. THROUGHOUT SUBSTANTIALLY THE WHOLE OF BOTH STEPS, AND UTILIZING SUBSTANTIALLY EQUIMOLECULAR PROPORTIONS OF THE REACTANTS BUT WITH AN EXCESS OF THE PRIMARY AMINE TO PREVENT FORMATION OF N-DICHLORO PRIMARY AMINE.
Claim 2
Dependent Claim
124 words
THE PROCESS OF PRODUCING AN N-MONO SUBSTITUTED SULFENAMIDE WHICH COMPRISES REACTING A HYPOHALITE OF THE CLASS CONSISTING OF THE ALKALI METAL AND ALKALINE EARTH METAL HYPOHALITES WITH A PRIMARY AMINE TO PRODUCE AN N-MONOCHLORO PRIMARY AMINE AND MIXING THE RESULTANT REACTION MIXTURE AND A MERCAPIDE OF THE CLASS CONSISTING OF THE ALKALI METAL AND ALKALINE EARTH METAL MERCAPTIDES, USING A MINIMAL AMOUNT OF WATER SO THAT DURING THE REACTION WITH THE MERCAPTIDE THERE IS ONLY A MINIMAL QUANTITY OF THE N-MONOCHLORO PRIMARY AMINE IN AQUEOUS SOLUTION, MAINTAINING A TEMPERATURE OF NOT OVER ABOUT 10*C. THROUGHOUT SUBSTANTIALLY THE WHOLE OF BOTH STEPS, AND UTILIZING SUBSTANTIALLY EQUIMOLECULAR PROPORTIONS OF THE REACTANTS BUT WITH AN EXCESS OF THE PRIMARY AMINE TO PREVENT FORMATION OF N-DICHLORO PRIMARY AMINE.
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) | 1953-01-16 | 1953-07-18 | 1954-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-16 | 1957-07-18 | 1958-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-16 | 1961-07-18 | 1962-01-17 | $7700.00 | Window Closed / Lapsed |