US2806848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinylation
Assignee: —
•
Filing: —
•
Granted: 1957-09-17
•
Expires: 1974-09-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:18
CPC Classifications
C; C07; C07D; C07D201/00; C07D201/02; C07D201/12; C07D201/08; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24; C07D207/26; C07D207/263; C07D207/267; C07D223/00; C07D223/02; C07D223/06; C07D223/08; C07D223/10; C08; C08G; C08G69/00; C08G69/02; C08G69/08; C08G69/14; C08G69/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A PROCESS FOR VINYLATING LACTAMS WHICH COMPRISES SATURATING BETWEEN -20* AND 30*C. WITH ACETYLENE UNDER PRESSURE A LIQUID MIXTURE CONTAINING A LACTUM HAVING HYDROGEN ON THE NITROGEN THEREOF, HEATING THE RESULTING MIXTURE TO A REACTING TEMPERATURE BETWEEN 200* AND 280*C. UNDER A PRESSURE SUFFICIENT TO MAINTAIN THE REACTING MIXTURE ENTIRELY LIQUID PHASE, INJECTING INTO THE HEATED MIXTURE UNDER PRESSURE A SOLUTION OF AN ALKALI METAL CATALYST, THE ALKALI METAL BEING A MEMBER OF THE CLASS CONSISTING OF SODIUM AND POTASSIUM, AND SEPARATING THE RESULTING N-VINYL LACTAM.
Claim 2
Dependent Claim
86 words
A PROCESS FOR VINYLATING LACTAMS WHICH COMPRISES SATURATING BETWEEN -20* AND 30*C. WITH ACETYLENE UNDER PRESSURE A LIQUID MIXTURE CONTAINING A LACTUM HAVING HYDROGEN ON THE NITROGEN THEREOF, HEATING THE RESULTING MIXTURE TO A REACTING TEMPERATURE BETWEEN 200* AND 280*C. UNDER A PRESSURE SUFFICIENT TO MAINTAIN THE REACTING MIXTURE ENTIRELY LIQUID PHASE, INJECTING INTO THE HEATED MIXTURE UNDER PRESSURE A SOLUTION OF AN ALKALI METAL CATALYST, THE ALKALI METAL BEING A MEMBER OF THE CLASS CONSISTING OF SODIUM AND POTASSIUM, AND SEPARATING THE RESULTING N-VINYL LACTAM.
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) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |