US3821311A
Expired / Lapsed
US
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Production of aldehydes from olefins
Assignee: Celanese Corp
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Filing: 1970-05-21
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Granted: 1974-06-28
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Expires: 1990-05-21
Abstract
Abstract Terminal olefins having the formula: ARE TRANSFORMED BY A SINGLE-STAGE PROCESS INTO THE PRODUCT COMPRISING SATURATED ALDEHYDES HAVING THE FORMULA: AND THE CORRESPONDING ALPHA, BETA-UNSATURATED ALDEHYDES WHEREIN R1 and R2 each independently represents a hydrogen substituent or a hydrocarbon substituent of between 1 and about 12 carbon atoms. The transformation is achieved by contacting the olefin conjointly with hydrogen, carbon monoxide, and a solution in a special hydroxylic organic solvent of a rhodium carbonyl complex, a triaryl phosphine, triaryl arsine, or triaryl stibine, and an aldol condensation catalyst.
Inventors
- 👤 M Hillman
- 👤 O Hughes
- 👤 M County
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:03
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/24; B01J31/2404; B01J31/18; B01J31/1895; B01J31/20; B01J31/26; C; C07; C07C; C07C45/00; C07C45/49; C07C45/50; C07C45/61; C07C45/62; C07C45/67; C07C45/68; C07C45/72; C07C45/74; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/321; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/822
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
32 words
A process according to claim 1 wherein the aldol condensation catalyst is an alkali metal hydroxide and the process is conducted at a pressure between about 500 p.s.i.g. and about 900 p.s.i.g..
Claim 2
Dependent Claim
109 words
A process according to claim 2 wherein: the terminal olefin is propylene; the molar ratio of hydrogen to caRbon monoxide is about 1:1; the polyoxgenated hydroxylic organic solvent is diethylene glycol, the concentration of rhodium complex within the liquid solution phase is between about 0.0001 molar and about 0.01 molar; the triphenyl phosphine component (c) of the liquid solution phase is employed in an amount such that the ratio of the concentration within the liquid solution phase of such component to the concentration of the rhodium complex is between about 2:1 and about 300:1; and the concentration of condensation catalyst is between about 0.0001 molar and about 1.0 molar.
Claim 3
Dependent Claim
71 words
A process according to claim 3 wherein: the hydrogen and carbon monoxide are employed in the form of synthesis gas; the concentration of rhodium complex is between about 0.0005 molar and about 0.005 molar; the ratio of the concentration of triphenyl phosphine to the concentration of rhodium complex is between about 20:1 and about 200:1; and the concentration of aldol condensation catalyst is between about 0.025 molar and about 0.2 molar
Claim 4
Dependent Claim
35 words
A process according to claim 4 wherein: the ratio of the concentration of triphenyl phosphine to the concentration of rhodium complex is about 100:1; and the concentration of aldol condensation catalyst is about 0.05 molar.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |