US3137730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of ethylenediamine
Assignee: Honeywell International Inc
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Filing: 1960-04-12
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Granted: 1964-06-16
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Expires: 1980-04-12
Abstract
No abstract record available.
Inventors
- 👤 Charles B Fitz-William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:39
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/04; C07C209/14; C07C209/16; C07C211/00; C07C211/01; C07C211/02; C07C211/09; C07C211/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A PROCESS FOR PRODUCING ETHYLENEDIAMINE WHICH COMPRISES REACTING ETHYLENE GLYCOL AND AMMONIA, IN RATIO OF AT LEAST ABOUT 5 MOLS OF AMMONIA PER MOL OF ETHYLENE GLYCOL, IN LIQUID PHASE, AT TEMPERATURE OF ABOUT 200* TO 300*C. AND AT PRESSURE ABOVE ABOUT 1000 P.S.I.G., IN THE PRESENCE OF (1) HYDROGEN IN AMOUNT OF AT LEAST ABOUT 0.2% BY WEIGHT OF THE ETHYLENE GLYCOL, (2) A METAL HYDROGENATION CATALYST COMPRISING ABOUT 5 TO 18 PARTS BY WEIGHT OF NICKEL AND ABOUT 5 TO 18 PARTS BY WEIGHT OF COPPER, AND (3) WATER IN AMOUNT OF ABOUT 30 TO 300% BY WEIGHT OF THE ETHYLENE GLYCOL, AND SEPARATING ETHYLENEDIAMINE FROM THE RESULTING REACTION MIXTURE.
Claim 2
Dependent Claim
112 words
A PROCESS FOR PRODUCING ETHYLENEDIAMINE WHICH COMPRISES REACTING ETHYLENE GLYCOL AND AMMONIA, IN RATIO OF AT LEAST ABOUT 5 MOLS OF AMMONIA PER MOL OF ETHYLENE GLYCOL, IN LIQUID PHASE, AT TEMPERATURE OF ABOUT 200* TO 300*C. AND AT PRESSURE ABOVE ABOUT 1000 P.S.I.G., IN THE PRESENCE OF (1) HYDROGEN IN AMOUNT OF AT LEAST ABOUT 0.2% BY WEIGHT OF THE ETHYLENE GLYCOL, (2) A METAL HYDROGENATION CATALYST COMPRISING ABOUT 5 TO 18 PARTS BY WEIGHT OF NICKEL AND ABOUT 5 TO 18 PARTS BY WEIGHT OF COPPER, AND (3) WATER IN AMOUNT OF ABOUT 30 TO 300% BY WEIGHT OF THE ETHYLENE GLYCOL, AND SEPARATING ETHYLENEDIAMINE FROM THE RESULTING REACTION MIXTURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |