Patent US3062887A successfully refreshed from Google Patents.
US3062887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of nitrosamines
Assignee: Hercules Powder Co
•
Filing: 1956-07-20
•
Granted: 1962-11-06
•
Expires: 1976-07-20
Abstract
No abstract record available.
Inventors
- 👤 Levering Dewey Robert
- 👤 Lucien G Maury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:01
CPC Classifications
C; C08; C08L; C08L21/00; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
117 words
IN A PROCESS FOR THE REACTION OF A SECONDARY AMINE WITH NITROGEN TRIOXIDE TO FORM A NITROSAMINE, THE IMPROVEMENT COMPRISING CONDUCTING SAID REACTION IN LIQUID PHASE AT A TEMPERATURE WITHIN THE RANFE OF FROM -20 TO 250*C. TO THEREBY FROM SAID NITROSAMINE IN YIELDS HIGHER THAN OBTAINED WHEN EFFECTTING SAID REACTION IN VAPOR PHASE, AND RESULTING REACTION MIXTURE BEING CAPABLE OF DETONATION UNDER THE SAID LIQUID AND TEMPERATURE CONDITIONS; REGULATING THE CONCENTRATION OF NITROGEN TRIOXIDE IN THE SAID REACTION MIXTURE TO A SUFFICIENTLY LOW VALUE TO MAINTAIN THE REACTANT PROPORTIONS OF SAID REACTION MIXTURE OUTSIDE THE AREA OF THOSE WHICH ARE DETONATE UNDER THE ABOVE SAID CONDITIONS; THE SAID SECONDARY AMINE BEING CHARACTERIZED BY THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim
117 words
IN A PROCESS FOR THE REACTION OF A SECONDARY AMINE WITH NITROGEN TRIOXIDE TO FORM A NITROSAMINE, THE IMPROVEMENT COMPRISING CONDUCTING SAID REACTION IN LIQUID PHASE AT A TEMPERATURE WITHIN THE RANFE OF FROM -20 TO 250*C. TO THEREBY FROM SAID NITROSAMINE IN YIELDS HIGHER THAN OBTAINED WHEN EFFECTTING SAID REACTION IN VAPOR PHASE, AND RESULTING REACTION MIXTURE BEING CAPABLE OF DETONATION UNDER THE SAID LIQUID AND TEMPERATURE CONDITIONS; REGULATING THE CONCENTRATION OF NITROGEN TRIOXIDE IN THE SAID REACTION MIXTURE TO A SUFFICIENTLY LOW VALUE TO MAINTAIN THE REACTANT PROPORTIONS OF SAID REACTION MIXTURE OUTSIDE THE AREA OF THOSE WHICH ARE DETONATE UNDER THE ABOVE SAID CONDITIONS; THE SAID SECONDARY AMINE BEING CHARACTERIZED BY THE STRUCTURAL FORMULA:
Claim 3
Dependent Claim
95 words
IN A PROCESS FOR THE REACTION OF A SECONDARY AMINE WITH NITROGEN TRIOXIDE TO FORM A NITROSAMINE, THE IMPROVEMENT COMPRISING REACTING DIMETHYLAMINE AS SAID SECONDARY AMINE AND CONDUCTING THE SAID REACTION IN LIQUID PHASE AT A TEMPERATURE OF FROM -20 TO 250*C.; AND REGULATING THE CONCENTRATION OF NITROGEN TRIOXIDE IN THE RESULTING REACTION MIXTURE AT A VALUES NOT EXCEEDING 40 WEIGHT PERCENT TO THEREBY MAINTAIN THE REACTANT PROPORTIONS OF SAID REACTION MIXTURE OUTSIDE THE AREA OF THOSE WHICH ARE DETONATANLE INDER THE ABOVE SAID LIQUID PHASE AND TEMPERATURE CONDITIONS; AND RECOVERING DIMETHYLNITROSAMINE PRODUCT SO PRODUCED.
Claim 4
Dependent Claim
95 words
IN A PROCESS FOR THE REACTION OF A SECONDARY AMINE WITH NITROGEN TRIOXIDE TO FORM A NITROSAMINE, THE IMPROVEMENT COMPRISING REACTING DIMETHYLAMINE AS SAID SECONDARY AMINE AND CONDUCTING THE SAID REACTION IN LIQUID PHASE AT A TEMPERATURE OF FROM -20 TO 250*C.; AND REGULATING THE CONCENTRATION OF NITROGEN TRIOXIDE IN THE RESULTING REACTION MIXTURE AT A VALUES NOT EXCEEDING 40 WEIGHT PERCENT TO THEREBY MAINTAIN THE REACTANT PROPORTIONS OF SAID REACTION MIXTURE OUTSIDE THE AREA OF THOSE WHICH ARE DETONATANLE INDER THE ABOVE SAID LIQUID PHASE AND TEMPERATURE CONDITIONS; AND RECOVERING DIMETHYLNITROSAMINE PRODUCT SO PRODUCED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |