Patent US4115433A successfully refreshed from Google Patents.
US4115433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst and process for producing polyhydric alcohols and derivatives
Assignee: Union Carbide Corp
•
Filing: 1977-10-11
•
Granted: 1978-09-19
•
Expires: 1997-10-11
Abstract
Abstract A novel catalyst and process for the manufacture of polyhydric alcohols from synthesis gas. This novel catalyst is a rhodium carbonyl sulfur cluster compound. In particular, the anion cluster of the rhodium carbonyl sulfur compound is of the following empirical formula: [Rh.sub.17 (S).sub.2 (CO).sub.32 ].sup.-3
Inventors
- 👤 Lowell Alan Cosby
- 👤 Rocco Anthony Fiato
- 👤 Jose Luis Vidal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:07
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0234; B01J31/0235; B01J31/0239; 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; B01J2231/00; B01J2231/60; B01J2231/64; B01J2231/641; B01J2531/00; B01J2531/02; B01J2531/0202; B01J2531/0211; B01J2531/80; B01J2531/82; B01J2531/822; B01J31/22; B01J31/2204; B01J31/226; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 18
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 sulfur cluster compound at a pressure between about 1,000 to about 50,000 pounds per square inch absolute and at a temperature of between about 210° C. and about 320° C. sufficient to form such alkane polyol(s).
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 sulfur cluster compound at a pressure between about 1,000 to about 50,000 pounds per square inch absolute and at a temperature of between about 210° C. and about 320° C. sufficient to form such alkane polyol(s).
Claim 3
Dependent Claim
48 words
The process of claim 1 wherein the rhodium carbonyl sulfur cluster compound possesses an infrared spectrum which is characterized by three significant infrared bands between about plus and minus 10 cm -1 of about 2010 cm -1 , about 1845 cm -1 and about 1818 cm -1 .
Claim 4
Dependent Claim
23 words
The process of claim 2 wherein the anion of rhodium carbonyl sulfur cluster compound is of the following formula: [Rh.sub.17 (S).sub.2 (CO).sub.32 ].sup.-3
Claim 5
Dependent Claim
22 words
The process of claim 1 wherein the rhodium carbonyl sulfur cluster compound is of the following formula: Cs.sub.3 [Rh.sub.17 (S).sub.2 (CO).sub.32 ]
Claim 6
Dependent Claim
27 words
The process of claim 1 wherein the rhodium carbonyl sulfur cluster compound is of the following formula: [C.sub.6 H.sub.5 CH.sub.2 N(C.sub.2 H.sub.5).sub.3 ].sub.3 [Rh.sub.17 (S).sub.2 (CO).sub.32 ]
Claim 7
Dependent Claim
16 words
the process of claim 1 wherein the rhodium carbonyl cluster compound is dissolved in a solvent.
Claim 8
Dependent Claim
10 words
The process of claim 5 wherein the solvent is tetraglyme.
Claim 9
Dependent Claim
12 words
The process of claim 5 wherein the solvent is a crown ether.
Claim 10
Dependent Claim
11 words
The process of claim 8 wherein the crown ether is [18]-crown-6.
Claim 11
Dependent Claim
17 words
The process of claim 5 wherein the solvent is a mixture of tetraglyme and a crown ether.
Claim 12
Dependent Claim
11 words
The process of claim 10 wherein the crown ether is [18]-crown-6.
Claim 13
Dependent Claim
19 words
The process of claim 1 wherein the temperature of the reaction is between about 260° C. and 280° C.
Claim 14
Dependent Claim
24 words
The process of claim 1 wherein the process is conducted under a pressure of between 8,000 to about 20,000 pounds per square inch absolute.
Claim 15
Dependent Claim
12 words
The process of claim 1 wherein the alkane polyol is ethylene glycol.
Claim 16
Dependent Claim
15 words
The process of claim 1 wherein the principal products recovered are ethylene glycol and methanol.
Claim 17
Dependent Claim
19 words
The process of claim 1 wherein the reaction is effected in the presence of a nitrogen containing base promoter.
Claim 18
Dependent Claim
13 words
The process of claim 16 wherein the nitrogen containing base promoter is N-methylmorpholine.
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 |