US3968136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic process for polyhydric alcohols and derivatives
Assignee: Union Carbide Corp
•
Filing: 1974-07-12
•
Granted: 1976-07-06
•
Expires: 1994-07-12
Abstract
Abstract This invention relates to the manufacture of such valuable chemicals as polyhydric alcohols, their ether and ester derivatives, oligomers of such alcohols and monohydric alcohols and their ether and ester derivatives by reacting oxides of carbon and hydrogen in the presence of rhodium carbonyl clusters which possess an infrared spectrum which exhibit three intense wavelength bands between about plus and minus 10 cm<->1 of about 1868 cm<->1, about 1838 cm<->1, and about 1785 cm<->1 dissolved in a lactone solvent from the group consisting of gamma-butyrolactone and delta-valerolactone.
Inventors
- 👤 Wellington E. Walker
- 👤 Earle S. Brown, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:22
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0234; B01J31/0235; B01J31/0244; B01J31/0201; B01J31/0211; B01J31/0214; B01J31/0255; B01J31/0267; 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; 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: 6
Claim 1
Independent Claim
107 words
The process of making alkane polyols which comprises reacting in a solvent selected from the group of gamma-butyrolactone and delta-valerolactone at a pressure of from about 500 psig to about 50,000 psig and a temperature of about 100°C. to about 375°C., a mixture consisting essentially of oxides of carbon and hydrogen in the presence of a rhodium carbonyl complex, said complex is provided to the reaction as a rhodium carbonyl cluster which possesses an infrared spectrum which exhibits three intense wavelength bands between about plus and minus 10cm - 1 of about 1868cm - 1 , about 1838cm - 1 , and about 1785cm - 1 .
Claim 2
Dependent Claim
107 words
The process of making alkane polyols which comprises reacting in a solvent selected from the group of gamma-butyrolactone and delta-valerolactone at a pressure of from about 500 psig to about 50,000 psig and a temperature of about 100°C. to about 375°C., a mixture consisting essentially of oxides of carbon and hydrogen in the presence of a rhodium carbonyl complex, said complex is provided to the reaction as a rhodium carbonyl cluster which possesses an infrared spectrum which exhibits three intense wavelength bands between about plus and minus 10cm - 1 of about 1868cm - 1 , about 1838cm - 1 , and about 1785cm - 1 .
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein the temperature of the reaction is from about 150°C. to about 300°C.
Claim 4
Dependent Claim
18 words
The process of claim 2 wherein the temperature of the reaction is from about 190°C. to about 275°C.
Claim 5
Dependent Claim
20 words
The process of claim 1 wherein the pressure of the reaction is from about 1000 psig to about 25,000 psig.
Claim 6
Dependent Claim
20 words
The process of claim 4 wherein the pressure of the reaction is from about 1000 psig to about 12,000 psig.
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) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |