US3024288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polynitro alcohol and its preparation
Assignee: Aerojet Rocketdyne Inc
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Filing: 1951-08-17
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Granted: 1962-03-06
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Expires: 1971-08-17
Abstract
No abstract record available.
Inventors
- 👤 Klager Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:11
CPC Classifications
C; C07; C07C; C07C201/00; C07C201/06; C07C201/14; C07C201/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A METHOD OF FORMING 2,2-DINITRO-L-PROPANOL WHICH COMPRISES TREATING ONE MOLE OF MONO NITROETHANE WITH ONE MOLE OF FORMALDEHYDE, COOLING THE MIXTURE TO ABOUT -5* C., ADDING TO THE MIXTURE ONE MOLE OF SODIUM HYDROXIDE IN WATER AND MAINTAINING THE TEMPERATURE BETWEEN 0 AND -5* C., STIRRING THE MIXTURE, ADDING A SOLUTION OF ONE MOLE OF SODIUM NITRITE IN WATER OF THE MIXTURE, STIRRING THE MIXTURE AT 0* C. AND THEN ADDING THE SODIUM NITRITE COMPLEX TO A SOLUTION OF 2 MOLES OF SILVER NITRATE IN WATER IN WHICH THE PH HAS BEEN ADJUSTED TO BETWEEN 4 AND 5, CARRYING OUR THE ENTIRE REACTION AT THIS PH, THE TEMPERATURE OF THE SILVER NITRATE SOLUTION BEING KEPT AT 0* C., ALLOWING THE TEMPERATURE TO RISE TO ROOM TEMPERATURE, CONTINUING STIRRING THE MIXTURE FOR A PERIOD OF ABOUT ONE HOUR THEREAFTER, EXTRACTING THE SOLUTION WITH ETHER, EVAPORATING THE ETHER THEREBY LEAVING A RESIDUE OF 2,2-DINITRO-L-PROPANOL.
Claim 2
Independent Claim
152 words
A METHOD OF FORMING 2,2-DINITRO-L-PROPANOL WHICH COMPRISES TREATING ONE MOLE OF MONO NITROETHANE WITH ONE MOLE OF FORMALDEHYDE, COOLING THE MIXTURE TO ABOUT -5* C., ADDING TO THE MIXTURE ONE MOLE OF SODIUM HYDROXIDE IN WATER AND MAINTAINING THE TEMPERATURE BETWEEN 0 AND -5* C., STIRRING THE MIXTURE, ADDING A SOLUTION OF ONE MOLE OF SODIUM NITRITE IN WATER OF THE MIXTURE, STIRRING THE MIXTURE AT 0* C. AND THEN ADDING THE SODIUM NITRITE COMPLEX TO A SOLUTION OF 2 MOLES OF SILVER NITRATE IN WATER IN WHICH THE PH HAS BEEN ADJUSTED TO BETWEEN 4 AND 5, CARRYING OUR THE ENTIRE REACTION AT THIS PH, THE TEMPERATURE OF THE SILVER NITRATE SOLUTION BEING KEPT AT 0* C., ALLOWING THE TEMPERATURE TO RISE TO ROOM TEMPERATURE, CONTINUING STIRRING THE MIXTURE FOR A PERIOD OF ABOUT ONE HOUR THEREAFTER, EXTRACTING THE SOLUTION WITH ETHER, EVAPORATING THE ETHER THEREBY LEAVING A RESIDUE OF 2,2-DINITRO-L-PROPANOL.
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) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |