US3935228A
Expired / Lapsed
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Preparation of cobalt complex
Assignee: Ethyl Corp
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Filing: 1973-10-23
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Granted: 1976-01-27
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Expires: 1993-10-23
Abstract
Abstract A process for preparing cobalt complexes and their use as hydroesterification catalysts are disclosed.
Inventors
- 👤 Kestutis A. Keblys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:16
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/18; B01J31/1805; B01J31/181; C; C07; C07C; C07C67/00; C07C67/36; C07C67/38; C07F; C07F15/00; C07F15/06; C07F15/065; B01J2531/00; B01J2531/80; B01J2531/84; B01J2531/845
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
156 words
A process for preparing solutions in pyridine/methanol of cobalt complexes which consists essentially of reacting (1) cobalt compound selected from cobalt oxides, cobalt sulfides, cobalt cyanides, cobalt salts of H 2 SO 4 , H 2 SO 3 , HNO 3 , halogen acids, phosphorus acids, boric acids and carbonic acids, organic cobalt salts of sulfonic acids, phosphorus containing acids, and C 2 -C 20 carboxylic acids, (2) carbon monoxide, (3) hydrogen, (4) a pyridine selected from pyridine and substituted pyridines wherein the substituents are selected from C 1 -C 6 hydrocarbon alkyl, and (5) C 1 -C 10 alkanol such that (i) the molar ratio of H 2 :CO is from 1:10 to 10:1, (ii) the molar ratio of said pyridine:cobalt is greater than about 2:1, and (iii) the volume ratio of pyridine:alkanol is from 3:1 to 1:3, at pressures ranging from about 1,000 to about 10,000 p.s.i.g., and temperatures ranging from 100°C. to 250°C.
Claim 2
Dependent Claim
156 words
A process for preparing solutions in pyridine/methanol of cobalt complexes which consists essentially of reacting (1) cobalt compound selected from cobalt oxides, cobalt sulfides, cobalt cyanides, cobalt salts of H 2 SO 4 , H 2 SO 3 , HNO 3 , halogen acids, phosphorus acids, boric acids and carbonic acids, organic cobalt salts of sulfonic acids, phosphorus containing acids, and C 2 -C 20 carboxylic acids, (2) carbon monoxide, (3) hydrogen, (4) a pyridine selected from pyridine and substituted pyridines wherein the substituents are selected from C 1 -C 6 hydrocarbon alkyl, and (5) C 1 -C 10 alkanol such that (i) the molar ratio of H 2 :CO is from 1:10 to 10:1, (ii) the molar ratio of said pyridine:cobalt is greater than about 2:1, and (iii) the volume ratio of pyridine:alkanol is from 3:1 to 1:3, at pressures ranging from about 1,000 to about 10,000 p.s.i.g., and temperatures ranging from 100°C. to 250°C.
Claim 3
Dependent Claim
24 words
The process of claim 1 wherein said H 2 :CO molar ratio is 1.5:1 to 1:3 and said pyridine:alkanol volume ratio is about 1:1.
Claim 4
Dependent Claim
10 words
The process of claim 1 wherein said pyridine is pyridine.
Claim 5
Dependent Claim
10 words
The process of claim 1 wherein said alkanol is methanol.
Claim 6
Dependent Claim
26 words
The process of claim 4 wherein said cobalt compound is a cobalt salt of a C 2 -C 20 carboxylic acid and said pyridine is pyridine.
Claim 7
Dependent Claim
10 words
The process of claim 4 wherein said alkanol is methanol.
Claim 8
Dependent Claim
12 words
The process of claim 6 wherein said cobalt compound is cobalt carbonate.
Claim 9
Dependent Claim
15 words
The process of claim 7 wherein said H 2 :CO ratio is 1:1 to 1:3.
Claim 10
Dependent Claim
14 words
The process of claim 8 wherein said pyridine methanol volume ratio is about 1:1.
Claim 11
Dependent Claim
14 words
The process of claim 9 wherein said H 2 :CO ratio is about 1:2.
Claim 12
Dependent Claim
34 words
The cobalt complex prepared by the process of claim 1 wherein said cobalt compound is cobalt salt of a C 2 -C 20 carboxylic acid, said alkanol is methanol and said pyridine is pyridine.
Claim 13
Dependent Claim
26 words
The cobalt complex prepared by the process of claim 1 wherein said pyridine is pyridine, said alkanol is methanol and said cobalt compound is cobalt carbonate.
Claim 14
Dependent Claim
33 words
The cobalt complex prepared by the process of claim 1 wherein said pyridine is pyridine, said alkanol is methanol, said cobalt compound is cobalt carbonate and said pyridine:methanol volume ratio is about 1:1.
Claim 15
Dependent Claim
157 words
A process for preparing solutions in pyridine/methanol of cobalt complexes which consists essentially of reacting (1) cobalt compound selected from cobalt oxides, cobalt sulfides, cobalt cyanides, cobalt salts of H 2 SO 4 , H 2 SO 3 , HNO 3 , halogen acids, phosphorus acids, boric acids and carbonic acids, organic cobalt salts of sulfonic acids, phosphorus containing acids, and C 2 -C 20 carboxylic acids, (2) carbon monoxide, (3) hydrogen, (4) and pyridine selected from isoquinoline, pyridine and mono- and di-alkyl substituted pyridine wherein the alkyls are C 1 -C 6 , and (5) C 1 -C 10 alkanol such that (i) the molar ratio of H 2 :CO is from 1:10 to 10:1, (ii) the molar ratio of said pyridine:cobalt is greater than about 2:1, and (iii) the volume ratio of pyridine:alkanol is from 3:1 to 1:3, at pressures ranging from about 1,000 to about 10,000 p.s.i.g., and temperatures ranging from 100°C. to 250°C.
Claim 16
Dependent Claim
157 words
A process for preparing solutions in pyridine/methanol of cobalt complexes which consists essentially of reacting (1) cobalt compound selected from cobalt oxides, cobalt sulfides, cobalt cyanides, cobalt salts of H 2 SO 4 , H 2 SO 3 , HNO 3 , halogen acids, phosphorus acids, boric acids and carbonic acids, organic cobalt salts of sulfonic acids, phosphorus containing acids, and C 2 -C 20 carboxylic acids, (2) carbon monoxide, (3) hydrogen, (4) and pyridine selected from isoquinoline, pyridine and mono- and di-alkyl substituted pyridine wherein the alkyls are C 1 -C 6 , and (5) C 1 -C 10 alkanol such that (i) the molar ratio of H 2 :CO is from 1:10 to 10:1, (ii) the molar ratio of said pyridine:cobalt is greater than about 2:1, and (iii) the volume ratio of pyridine:alkanol is from 3:1 to 1:3, at pressures ranging from about 1,000 to about 10,000 p.s.i.g., and temperatures ranging from 100°C. to 250°C.
Claim 17
Dependent Claim
24 words
The process of claim 14 wherein said H 2 :CO molar ratio is 1.5:1 to 1:3 and said pyridine:alkanol volume ratio is about 1:1.
Claim 18
Dependent Claim
10 words
The process of claim 14 wherein said pyridine is pyridine.
Claim 19
Dependent Claim
10 words
The process of claim 14 wherein said alkanol is methanol.
Claim 20
Dependent Claim
26 words
The process of claim 17 wherein said cobalt compound is a cobalt salt of a C 2 -C 20 carboxylic acid and said pyridine is pyridine.
Claim 21
Dependent Claim
10 words
The process of claim 17 wherein said alkanol is methanol.
Claim 22
Dependent Claim
12 words
The process of claim 19 wherein said cobalt compound is cobalt carbonate.
Claim 23
Dependent Claim
15 words
The process of claim 20 wherein said H 2 :CO ratio is 1:1 to 1:3.
Claim 24
Dependent Claim
13 words
The process of claim 21 wherein said pyridine:methanol volume ratio is about 1:1.
Claim 25
Dependent Claim
14 words
The process of claim 22 wherein said H 2 :CO ratio is about 1:2.
Claim 26
Dependent Claim
39 words
The solutions in pyridine/methanol of cobalt complex prepared by the process of claim 14 wherein said cobalt compound is a cobalt salt of a C 2 -C 20 carboxylic acid, said alkanol is methanol and said pyridine is pyridine.
Claim 27
Dependent Claim
30 words
The solutions in pyridine/methanol of cobalt complex prepared by the process of claim 14 wherein said pyridine is pyridine, said alkanol is methanol and said cobalt compound is cobalt carbonate.
Claim 28
Dependent Claim
37 words
The solutions in pyridine/methanol of cobalt complex prepared by the process of claim 14 wherein said pyridine is pyridine, said alkanol is methanol, said cobalt compound is cobalt carbonate and said pyridine:methanol volume ratio is about 1:1.
References Cited (Backward Citations)
GB1199550A
Cited
US3725534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |