US3219703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of diarylamines from nitroaromatics
Assignee: Monsanto Co
•
Filing: 1961-02-02
•
Granted: 1965-11-23
•
Expires: 1981-02-02
Abstract
No abstract record available.
Inventors
- 👤 Harry W Kilbourne
- 👤 James E Van Verth
- 👤 Gene R Wilder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:54
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/68; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10S524/929
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
THE PROCESS OF AROMATIZATION WHICH CONSISTS ESSENTIALLY OF HEATING AT NOT ABOVE ABOUT 300*C. BELOW TEMPERATURE CAUSING RUPTURE OF CARBON-CARBON BONDS 1 MOLAR PROPORTION OF NITROCOMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON NITROCOMPOUND, AND SUBSTITUTED DERIVATIVES THEREOF WHEREIN THE SUBSTITUENTS ARE LESS REACTIVE WITH THE KETONE THAN A NITRO RADICAL AND SELECTED FROM THE GROUP CONSISTING OF RO-, RNH- AND FLUORINE WHERE R IS A HYDROCARBON RADICAL AND AT LEAST 1.5 MOLAR PROPORTIONS OF SIX-MEMBERED ALICYCLIC HYDROCARBON MONOKETONE FREE FROM QUATERNARY CARBON IN THE RING WITH PALLADIUM CATALYST THEREBY CONVERTING THE ALICYCLIC KETONE TO AROMATIC AMIKNO RADICAL IN PLACE OF NITRO RADICAL.
Claim 2
Dependent Claim
103 words
THE PROCESS OF AROMATIZATION WHICH CONSISTS ESSENTIALLY OF HEATING AT NOT ABOVE ABOUT 300*C. BELOW TEMPERATURE CAUSING RUPTURE OF CARBON-CARBON BONDS 1 MOLAR PROPORTION OF NITROCOMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON NITROCOMPOUND, AND SUBSTITUTED DERIVATIVES THEREOF WHEREIN THE SUBSTITUENTS ARE LESS REACTIVE WITH THE KETONE THAN A NITRO RADICAL AND SELECTED FROM THE GROUP CONSISTING OF RO-, RNH- AND FLUORINE WHERE R IS A HYDROCARBON RADICAL AND AT LEAST 1.5 MOLAR PROPORTIONS OF SIX-MEMBERED ALICYCLIC HYDROCARBON MONOKETONE FREE FROM QUATERNARY CARBON IN THE RING WITH PALLADIUM CATALYST THEREBY CONVERTING THE ALICYCLIC KETONE TO AROMATIC AMIKNO RADICAL IN PLACE OF NITRO RADICAL.
References Cited (Backward Citations)
US2380420A
Cited
US2413598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |