US3020319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparing 2, 2-dinitro-1, 3-propanediol
Assignee: Aerojet Rocketdyne Inc
•
Filing: 1953-11-16
•
Granted: 1962-02-06
•
Expires: 1973-11-16
Abstract
No abstract record available.
Inventors
- 👤 Klager Karl
- 👤 Gustave B Linden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:52
CPC Classifications
C; C07; C07C; C07C201/00; C07C201/06; C07C201/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
THE METHOD OF PREPARING 2,2-DINITRO-1,3-PROPANEDIOL WHICH COMPRISES REACTING 2,2-DIMETHYL-5-HYDROXYMETHYL5-NITRO-1,3-DIOXANE WITH A BASE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND ALKALINE EARTH METAL HYDROXIDES TO YIELD A SALT; SUBSEQUENTLY REACTING SAID SALT WITH A NITRITE SALT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND ALKALINE EARTH METAL NITRILE SALTS IN THE PARESENCE OF SILVER NITRATE TO YIELD A DINITRO DIOXANE; AND SUBSEQUENTLY ACID HYDROLYZING SAID DINITRO DIOXANE TO THE DESIRED 2,2-DINITRO-1,3-PROPANEDIOL.
Claim 2
Independent Claim
73 words
THE METHOD OF PREPARING 2,2-DINITRO-1,3-PROPANEDIOL WHICH COMPRISES REACTING 2,2-DIMETHYL-5-HYDROXYMETHYL5-NITRO-1,3-DIOXANE WITH A BASE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND ALKALINE EARTH METAL HYDROXIDES TO YIELD A SALT; SUBSEQUENTLY REACTING SAID SALT WITH A NITRITE SALT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND ALKALINE EARTH METAL NITRILE SALTS IN THE PARESENCE OF SILVER NITRATE TO YIELD A DINITRO DIOXANE; AND SUBSEQUENTLY ACID HYDROLYZING SAID DINITRO DIOXANE TO THE DESIRED 2,2-DINITRO-1,3-PROPANEDIOL.
References Cited (Backward Citations)
US2307894A
Cited
US2522959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |