Patent US4115428A successfully refreshed from Google Patents.
US4115428A
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Catalyst and process for producing polyhydric alcohols and derivatives
Assignee: Union Carbide Corp
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Filing: 1977-09-29
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Granted: 1978-09-19
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Expires: 1997-09-29
Abstract
Abstract A novel catalyst and process for the manufacture of polyhydric alcohols from synthesis gas. This novel catalyst is a rhodium carbonyl carbido cluster compound. In particular the cluster compound is of the following empirical formula: Cs.sub.2 [Rh.sub.6 (CO).sub.15 C]
Inventors
- 👤 Jose Luis Vidal
- 👤 Zoltan Csaba Mester
- 👤 Wellington Epler Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:35
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0234; B01J31/0235; B01J31/0244; B01J31/0201; B01J31/0204; B01J31/0237; B01J31/0271; B01J31/16; B01J31/20; C; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/1512; C07C29/1514; C07C29/153; C07C29/156; C07C29/157; C07C29/158; C07C29/159; B01J2231/00; B01J2231/60; B01J2231/64; B01J2231/641; B01J2231/648; B01J2531/00; B01J2531/02; B01J2531/0202; B01J2531/0211; B01J2531/80; B01J2531/82; B01J2531/822; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
66 words
The process of making an alkane polyol (s) which comprises reacting in a homogeneous liquid phase a mixture of hydrogen and oxides of carbon in the presence of a rhodium carbonyl carbido cluster at a pressure between about 4000 to about 16,000 pounds per square inch absolute and at a temperature of between about 240° C. and about 280° C. sufficient to form such alkane polyol.
Claim 2
Dependent Claim
66 words
The process of making an alkane polyol (s) which comprises reacting in a homogeneous liquid phase a mixture of hydrogen and oxides of carbon in the presence of a rhodium carbonyl carbido cluster at a pressure between about 4000 to about 16,000 pounds per square inch absolute and at a temperature of between about 240° C. and about 280° C. sufficient to form such alkane polyol.
Claim 3
Dependent Claim
48 words
The process of claim 1 wherein the rhodium carbonyl carbido cluster which possesses an infrared spectrum which is characterized by three significant infrared bands between about plus and minus 10 cm -1 of about 1810 cm -1 , about 1839-40 cm -1 and about 1985 cm -1 .
Claim 4
Dependent Claim
20 words
The process of claim 2 wherein the rhodium carbonyl carbido cluster is of the following formula: Cs.sub.2 [Rh.sub.6 (CO).sub.15 C]
Claim 5
Dependent Claim
16 words
The process of claim 1 wherein the rhodium carbonyl cluster compound is dissolved in a solvent.
Claim 6
Dependent Claim
10 words
The process of claim 4 wherein the solvent is tetraglyme.
Claim 7
Dependent Claim
10 words
The process of claim 4 wherein the solvent is sulfolane.
Claim 8
Dependent Claim
19 words
The process of claim 1 wherein the temperature of the reaction is between 250° C. and about 270° C.
Claim 9
Dependent Claim
24 words
The process of claim 1 wherein the process is conducted under a pressure of between 6,000 to about 14,000 pounds per square inch absolute.
Claim 10
Dependent Claim
12 words
The process of claim 1 wherein the alkane polyol is ethylene glycol.
Claim 11
Dependent Claim
15 words
The process of claim 1 wherein the principal products recovered are ethylene glycol and methanol.
Claim 12
Dependent Claim
19 words
The process of claim 1 wherein the reaction is effected in the presence of a nitrogen containing base promoter.
Claim 13
Dependent Claim
10 words
The process of claim 11 wherein the promoter is pyridine.
Claim 14
Dependent Claim
10 words
The process of claim 11 wherein the promoter is N-methylmorpholine.
Claim 15
Dependent Claim
11 words
The process of claim 11 wherein the promoter is ethylene dimorpholine.
References Cited (Backward Citations)
US3957857A
Cited
US3968136A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |