US3857893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of diethyl ketone
Assignee: Shell USA Inc
•
Filing: 1969-12-17
•
Granted: 1974-12-31
•
Expires: 1989-12-17
Abstract
Abstract Production of diethyl ketone at high selectivity and rate by the reaction of ethylene, carbon monoxide and hydrogen under mild conditions of temperature and pressure in the presence of a cobalt carbonyl catalyst and ammonia or a primary or tertiary amine as catalyst promoter.
Inventors
- 👤 K Nozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:54
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/04; C07C45/00; C07C45/49
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
132 words
A LIQUID PHASE PROCESS OF PRODUCING PREDOMINANTLY DIETHYL KETONE BY REACTING ETHYLENE, CARBON MONOXIDE AND HYDROGEN IN THE PRESENCE OF A CATALYTIC AMOUNT OF A COBALT CARBONYL CATALYST CONTAINING ONLY COBALT AND CARBON MONOXIDE AND FROM ABOUT 0.3 TO ABOUT 1.5 MOLES OF AN AMINE CATALYST PROMOTER SELECTED FROM THE GROUP CONSISTING OF AMMONIA, A PRIMARY HYDROCARBYL AMINE, AND A TERTIARY HYDROCARBYL AMINE, SAID HYDROCARBYL CONTAINING ONLY AROMATIC UNSATURATION AND UP TO 12 CARBON ATOMS, PER GRAM ATOM OF COBALT, AT A TEMPERATURE OF FROM ABOUT 50*C TO ABOUT 1500*C AND A PRESSURE OF ABOUT 50 TO ABOUT 150*C AND A PRESSURE OF ABOUT 50 TO ABOUT 2,000 PSIG. THE MOLAR RATIO OF ETHYLENE TO HYDROGEN BEING AT LEAST TWO AND THE RATIO OF CARBON MONOXIDE TO HYDROGEN BEING GREATER THAN ONE.
Claim 2
Dependent Claim
132 words
A LIQUID PHASE PROCESS OF PRODUCING PREDOMINANTLY DIETHYL KETONE BY REACTING ETHYLENE, CARBON MONOXIDE AND HYDROGEN IN THE PRESENCE OF A CATALYTIC AMOUNT OF A COBALT CARBONYL CATALYST CONTAINING ONLY COBALT AND CARBON MONOXIDE AND FROM ABOUT 0.3 TO ABOUT 1.5 MOLES OF AN AMINE CATALYST PROMOTER SELECTED FROM THE GROUP CONSISTING OF AMMONIA, A PRIMARY HYDROCARBYL AMINE, AND A TERTIARY HYDROCARBYL AMINE, SAID HYDROCARBYL CONTAINING ONLY AROMATIC UNSATURATION AND UP TO 12 CARBON ATOMS, PER GRAM ATOM OF COBALT, AT A TEMPERATURE OF FROM ABOUT 50*C TO ABOUT 1500*C AND A PRESSURE OF ABOUT 50 TO ABOUT 150*C AND A PRESSURE OF ABOUT 50 TO ABOUT 2,000 PSIG. THE MOLAR RATIO OF ETHYLENE TO HYDROGEN BEING AT LEAST TWO AND THE RATIO OF CARBON MONOXIDE TO HYDROGEN BEING GREATER THAN ONE.
Claim 3
Dependent Claim
10 words
The process of claim 1 wherein said amine is ammonia.
Claim 4
Dependent Claim
15 words
The process of claim 1 wherein said temperature is from about 60* to about 125*C.
Claim 5
Dependent Claim
10 words
The process of claim 1 wherein said amine is benzylamine.
Claim 6
Dependent Claim
10 words
The process of claim 1 wherein said amine is pyridine.
Claim 7
Dependent Claim
13 words
The process of claim 3 wherein the cobalt carbonyl catalyst is dicobalt octacarbonyl.
Claim 8
Dependent Claim
23 words
The process of claim 3 wherein the cobalt carbonyl catalyst is prepared by reduction and carbonylation of a cobalt salt in liquid phase.
References Cited (Backward Citations)
CA500802A
Cited
US2053233A
Cited
US2327066A
Cited
US2473995A
Cited
US2576113A
Cited
US3059031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |