US3088978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic hydrogenation of 2, 4-dinitrophenylamines
Assignee: Individual
•
Filing: 1960-09-12
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Granted: 1963-05-07
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Expires: 1980-09-12
Abstract
No abstract record available.
Inventors
- 👤 Walter H Brunner
- 👤 Halasz Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:06
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/418; A61Q; A61Q5/00; A61Q5/06; A61Q5/065; C; C07; C07C; C07C209/00; C07C209/30; C07C209/32; C07C209/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PROCESS FOR THE CATALYTIC HYDROGENATION OF A 2,4DINITROPHENYLAMINE TO AN ACID ADDITION SALT OF THE CORRESPONDING 2-NITRO 4-NITRO PHENYLAMINE WHEREIN THE AMINO NITROGEN OF SAID 2,4-DINITROPHENYLAMINE COMPOUND IS SUBSTITUTED BY AT LEAST ONE HYDROGEN ATOM AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, A HYDROCARBON RADICAL CONTAINING FROM 1 TO ABOUT 12 CARBON ATOMS, AND A HYDROXY-SUBSTITUTED HYDROCARBON RADICAL CONTAINING FROM 1 TO ABOUT 12 CARBON ATOMS WHEREIN THE SAID HYDROCARBON RADICAL AND HYDROXY-SUBSTITUTED HYDROCARBON RADICAL ARE FREE OF OLEFINIC AND ACETYLENIC UNSATURATION, WHICH COMPRISES HYDROGENATING THE 2,4-DINITROPHENYLAMINE BY INTRODUCING HYDROGEN INTO A MIXTURE HAVING A TEMPERATURE OF ABOUT 0*C. TO ABOUT 9*C. AND CONTAINING (A) A DISPERSION OF THE 2,4-DINITROPHENYLAMINE IN A POLAR ORGANIC SOLVENT FREE FROM OLEFINIC AND ACETYLENIC UNSATURATION, SAID 2,4-DINITROPHENYLAMINE HAVING THE GENERIC FORMULA:
Claim 2
Dependent Claim
131 words
A PROCESS FOR THE CATALYTIC HYDROGENATION OF A 2,4DINITROPHENYLAMINE TO AN ACID ADDITION SALT OF THE CORRESPONDING 2-NITRO 4-NITRO PHENYLAMINE WHEREIN THE AMINO NITROGEN OF SAID 2,4-DINITROPHENYLAMINE COMPOUND IS SUBSTITUTED BY AT LEAST ONE HYDROGEN ATOM AND A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, A HYDROCARBON RADICAL CONTAINING FROM 1 TO ABOUT 12 CARBON ATOMS, AND A HYDROXY-SUBSTITUTED HYDROCARBON RADICAL CONTAINING FROM 1 TO ABOUT 12 CARBON ATOMS WHEREIN THE SAID HYDROCARBON RADICAL AND HYDROXY-SUBSTITUTED HYDROCARBON RADICAL ARE FREE OF OLEFINIC AND ACETYLENIC UNSATURATION, WHICH COMPRISES HYDROGENATING THE 2,4-DINITROPHENYLAMINE BY INTRODUCING HYDROGEN INTO A MIXTURE HAVING A TEMPERATURE OF ABOUT 0*C. TO ABOUT 9*C. AND CONTAINING (A) A DISPERSION OF THE 2,4-DINITROPHENYLAMINE IN A POLAR ORGANIC SOLVENT FREE FROM OLEFINIC AND ACETYLENIC UNSATURATION, SAID 2,4-DINITROPHENYLAMINE HAVING THE GENERIC FORMULA:
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) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |