US3856832A
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US
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Process for recovering cobalt catalyst in an active form from a hydroesterification reaction mixture
Assignee: Ethyl Corp
•
Filing: 1973-05-24
•
Granted: 1974-12-24
•
Expires: 1993-05-24
Abstract
Abstract A process for recovering substantially all of the cobalt catalyst in an active form from a hydroesterification reaction mixture. The hydroesterification reaction is the catalytic reaction of olefin, CO and alkanol to produce a carboxylic acid ester. Since the recovered cobalt catalyst is active, it can be directly recycled for use as a hydroesterification catalyst.
Inventors
- 👤 Corp Ethyl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:29
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/20; B01J31/02; B01J31/0234; B01J31/0235; B01J31/0244; B01J31/40; B01J31/4015; B01J31/4023; B01J31/403; B01J38/00; B01J38/48; B01J38/50; B01J38/56; C; C07; C07C; C07C67/00; C07C67/36; C07C67/38; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/321; B01J2531/00; B01J2531/02; B01J2531/0202; B01J2531/0208; B01J2531/80; B01J2531/84; B01J2531/845; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 58
Claim 1
Independent Claim
109 words
A PROCESS FOR RECOVERING COBALT CONTAINING CATALYST IN AN ACTIVE FORM FROM A REACTION MIXTURE CONTAINING ESTER PRODUCT, ALKANOL AND COBALT CONTAINING CATALYST OBTAINED FROM A COBALT CATALYZED REACTION OF C3-C40 OLEFIN, CARBON MONOXIDE AND ALKANOL WHICH COMPRISES MIXING SAID REACTION MIXTURE WITH A NORMALLY LIQUID HYDROCARBON IN AN AMOUNT SUFFICIENT TO EXTRACT THE ESTER PRODUCT WHEREBY A NORMALLY LIQUID HYDROCARBON PHASE AND AN ALKANOLL PHASE ARE FORMED, AND THEREAFTER SEPARATING SAID ALKANOL PHASE FROM SAID NORMALLY LIQUID HYDROCARBON PHASE, SAID ALKANOL PHASE CONTAINING SUBSTANTIALLY ALL OF THE COBALT CONTAINING CATALYST IN AN ACTIVE FORM SUITABLE FOR USE AS A CATALYST FOR SAID REACTION OF OLEFIN, CO AND ALKANOL.
Claim 2
Dependent Claim
109 words
A PROCESS FOR RECOVERING COBALT CONTAINING CATALYST IN AN ACTIVE FORM FROM A REACTION MIXTURE CONTAINING ESTER PRODUCT, ALKANOL AND COBALT CONTAINING CATALYST OBTAINED FROM A COBALT CATALYZED REACTION OF C3-C40 OLEFIN, CARBON MONOXIDE AND ALKANOL WHICH COMPRISES MIXING SAID REACTION MIXTURE WITH A NORMALLY LIQUID HYDROCARBON IN AN AMOUNT SUFFICIENT TO EXTRACT THE ESTER PRODUCT WHEREBY A NORMALLY LIQUID HYDROCARBON PHASE AND AN ALKANOLL PHASE ARE FORMED, AND THEREAFTER SEPARATING SAID ALKANOL PHASE FROM SAID NORMALLY LIQUID HYDROCARBON PHASE, SAID ALKANOL PHASE CONTAINING SUBSTANTIALLY ALL OF THE COBALT CONTAINING CATALYST IN AN ACTIVE FORM SUITABLE FOR USE AS A CATALYST FOR SAID REACTION OF OLEFIN, CO AND ALKANOL.
Claim 3
Dependent Claim
23 words
The proCess of claim 1 wherein said amount of hydrocarbon is at least about one-quarter volume of hydrocarbon per volume of reaction mixture.
Claim 4
Dependent Claim
39 words
mixing the resultant reaction mixture from (1) which contains ester product and alkanol with an amount of normally liquid hydrocarbon sufficient to extract said ester from said reaction mixture, whereby a hydrocarbon phase and an alkanol phase are produced,
Claim 5
Dependent Claim
39 words
mixing the resultant reaction mixture from (1) which contains ester product and alkanol with an amount of normally liquid hydrocarbon sufficient to extract said ester from said reaction mixture, whereby a hydrocarbon phase and an alkanol phase are produced,
Claim 6
Dependent Claim
8 words
separating said hydrocarbon phase from said alkanol phase,
Claim 7
Dependent Claim
8 words
separating said hydrocarbon phase from said alkanol phase,
Claim 8
Dependent Claim
10 words
The process of claim 1 wherein said hydrocarbon is aliphatic.
Claim 9
Dependent Claim
19 words
The process of claim 3 wherein said hydrocarbon is independently selected from C5-C20 alkanes, C6-C30 olefins and mixtures thereof.
Claim 10
Dependent Claim
12 words
recovering said ester product from said hydrocarbon phase using conventional means, and
Claim 11
Dependent Claim
12 words
recovering said ester product from said hydrocarbon phase using conventional means, and
Claim 12
Dependent Claim
24 words
utilizing said alkanol phase, which contains substantially all of the cobalt containing catalyst in an active form directly as the catalyst in step (1).
Claim 13
Dependent Claim
24 words
utilizing said alkanol phase, which contains substantially all of the cobalt containing catalyst in an active form directly as the catalyst in step (1).
Claim 14
Dependent Claim
16 words
The process of claim 3 wherein said hydrocarbon is selected from C5-C10 alkanes and mixtures thereof.
Claim 15
Dependent Claim
16 words
The process of claim 1 wherein said alkanol has from 1 to about 12 carbon atoms.
Claim 16
Dependent Claim
13 words
The process of claim 6 wherein said alkanol is primary, monohydroxy, C1-C5 alkanol.
Claim 17
Dependent Claim
10 words
The process of claim 7 wherein said alkanol is methanol.
Claim 18
Dependent Claim
14 words
The process of claim 1 wherein said cobalt catalyzed reaction includes a pyridine promoter.
Claim 19
Dependent Claim
10 words
The process of claim 9 wherein said prometer is pyridine.
Claim 20
Dependent Claim
10 words
The process of claim 9 wherein said hydrocoarbon is aliphatic.
Claim 21
Dependent Claim
13 words
The process of claim 11 wherein said alkanol is primary, monohydroxy, C1-C5 alkanol.
Claim 22
Dependent Claim
15 words
The process of claim 12 wherein said promoter is pyridine and said alkanol is methanol.
Claim 23
Dependent Claim
17 words
The process of claim 1 wherein the molar ratio of olefin: alkanol is at least about 1:1.1.
Claim 24
Dependent Claim
14 words
The process of claim 14 wherein said olefin:alkanol molar ratio is 1:1.1 to 1:3.
Claim 25
Dependent Claim
13 words
The process of claim 14 wherein said alkanol is primary, monohydroxy, C1-C5 alkanol.
Claim 26
Dependent Claim
10 words
The process of claim 16 wherein said hydrocarbon is aliphatic.
Claim 27
Dependent Claim
18 words
The process of claim 17 wherein said hydrocarbon is selected from C5-C20 alkanes, C6-C30 olefins and mixtures thereof.
Claim 28
Dependent Claim
24 words
The process of claim 18 wherein the amount of hydrocarbon is at least about one volume of hydrocarbon per volume of said reaction mixture.
Claim 29
Dependent Claim
12 words
The process of claim 15 wherein said reaction includes a pyridine promoter.
Claim 30
Dependent Claim
10 words
The process of claim 20 wherein said promoter is pyridine.
Claim 31
Dependent Claim
12 words
The process of claim 16 wherein said reaction includes a pyridine promoter.
Claim 32
Dependent Claim
10 words
The process of claim 22 wherein said promoter is pyridine.
Claim 33
Dependent Claim
12 words
The process of claim 19 wherein said reaction includes a pyridine promoter.
Claim 34
Dependent Claim
10 words
The process of claim 24 wherein said promoter is pyridine.
Claim 35
Dependent Claim
10 words
The process of claim 25 wherein said alkanol is methanol.
Claim 36
Dependent Claim
17 words
The process of claim 26 wherein said reaction is carried out at pressures above about 1,000 p.s.i.g.
Claim 37
Dependent Claim
16 words
The process of claim 27 wherein said hydrocarbon is selected from C5-C10 alkanes and mixtures thereof.
Claim 38
Dependent Claim
10 words
An improved process for preparing carboxylic acid esters which comprises
Claim 39
Dependent Claim
10 words
An improved process for preparing carboxylic acid esters which comprises
Claim 40
Dependent Claim
13 words
The process of claim 29 wherein step (1) also includes a pyridine promoter.
Claim 41
Dependent Claim
10 words
The process of claim 30 wherein said promoter is pyridine.
Claim 42
Dependent Claim
13 words
The process of claim 29 wherein said alkanol is primary, monohydroxy, C1-C5 alkanol.
Claim 43
Dependent Claim
10 words
The process of claim 32 wherein said alkanol is methanol.
Claim 44
Dependent Claim
10 words
The process of claim 29 wherein said hydrocarbon is aliphatic.
Claim 45
Dependent Claim
18 words
The process of claim 34 wherein said hydrocarbon is selected from C5-C20 alkanes, C6-C30 olefins and mixtures thereof.
Claim 46
Dependent Claim
23 words
The process of claim 29 wherein said amount of hydrocarbon is at least about one volume of hydrocarbon per volume of reaction mixture.
Claim 47
Dependent Claim
20 words
The process of claim 29 wherein the molar ratio of olefin: alkanol in step (1) is at least about 1:1.1.
Claim 48
Dependent Claim
16 words
The process of claim 37 wherein said molar ratio of olefin: alkanol is 1:1.1 to 1:3.
Claim 49
Dependent Claim
18 words
The process of claim 36 wherein said hydrocarbon is aliphatic and said alkanol is primary, monohydroxy, C1-C5 alkanol.
Claim 50
Dependent Claim
13 words
The process of claim 39 wherein said step (1) includes a pyridine promoter.
Claim 51
Dependent Claim
10 words
The process of claim 40 wherein said promoter is pyridine.
Claim 52
Dependent Claim
10 words
The process of claim 41 wherein said alkanol is methanol.
Claim 53
Dependent Claim
18 words
The process of claim 30 wherein said step (1) is carried out at pressures above about 1,000 p.s.i.g.
Claim 54
Dependent Claim
18 words
The process of claim 30 wherein said step (1) is carried out at pressures above about 1,700 p.s.i.g.
Claim 55
Dependent Claim
18 words
The process of claim 40 wherein said step (1) is carried out at pressures above about 1,700 p.s.i.g.
Claim 56
Dependent Claim
18 words
The process of claim 42 wherein said step (1) is carried out at pressures above about 1,700 p.s.i.g.
Claim 57
Dependent Claim
19 words
The process of claim 46 wherein the molar ratio of olefin: alkanol molar ratio is at least about 1:1.1.
Claim 58
Dependent Claim
16 words
The process of claim 47 wherein said hydrocarbon is selected from C5-C10 alkanes and mixtures thereof.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |