Patent US4159999A successfully refreshed from Google Patents.
US4159999A
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Hydroformylation of olefins
Assignee: Celanese Corp
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Filing: 1974-11-22
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Granted: 1979-07-03
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Expires: 1994-11-22
Abstract
Abstract Olefins are converted to aldehydes and/or alcohols having one more carbon atom than the olefin by reacting the olefin with carbon monoxide and hydrogen in the presence of an in situ formed catalytic complex of a Group VIII metal, carbon monoxide and a trivalent ligand, the metal being introduced into the reaction zone in the form of a solution of a water-soluble inorganic salt dissolved in a solvent comprised of at least 40% by volume of a polyalkylene glycol, the polyalkylene glycol acting as a coupling agent preventing precipitation of the metal prior to formation of the catalyst complex.
Inventors
- 👤 Adin L. Stautzenberger
- 👤 James L. Paul
- 👤 Jerry D. Unruh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:43
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/18; B01J31/1845; B01J31/185; B01J31/20; B01J31/24; B01J31/2404; C; C07; C07C; C07C45/00; C07C45/49; C07C45/50; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/321; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/822; B01J2531/90; B01J31/26; B01J31/28
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
105 words
In the process for the hydroformylation of olefins with hydrogen and carbon monoxide in a reaction zone to form aldehydes, alcohols and mixtures thereof in which a catalytic complex comprising a Group VIII metal, carbon monoxide and a ligand is formed in situ, the improvement comprising the introduction of the Group VIII metal into said zone in the form of a water-soluble inorganic salt dissolved in a solvent comprised of at least about 40% of a polyalkylene glycol selected from compounds having the following structure and mixtures thereof: ##STR2## wherein n is 1-3, and R and R' are selected from --H and --CH 3 .
Claim 2
Dependent Claim
105 words
In the process for the hydroformylation of olefins with hydrogen and carbon monoxide in a reaction zone to form aldehydes, alcohols and mixtures thereof in which a catalytic complex comprising a Group VIII metal, carbon monoxide and a ligand is formed in situ, the improvement comprising the introduction of the Group VIII metal into said zone in the form of a water-soluble inorganic salt dissolved in a solvent comprised of at least about 40% of a polyalkylene glycol selected from compounds having the following structure and mixtures thereof: ##STR2## wherein n is 1-3, and R and R' are selected from --H and --CH 3 .
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein said polyalkylene glycol is diethylene glycol.
Claim 4
Dependent Claim
12 words
The process of claim 1 wherein said Group VIII metal is rhodium.
Claim 5
Dependent Claim
24 words
The process of claim 3 wherein said inorganic metal salt is selected from the group consisting of rhodium nitrate, rhodium sulphate and rhodium phosphate.
Claim 6
Dependent Claim
28 words
The process of claim 1 wherein the remainder of said solvent is comprised of water and an alcohol selected from the group consisting of ethanol and the propanols.
Claim 7
Dependent Claim
24 words
The process of claim 1 wherein said ligand is selected from the group consisting of the triarylphosphites, the triarylphosphines, the trialkylphosphites, and the tricycloalkylphosphites.
Claim 8
Dependent Claim
15 words
The process of claim 1 wherein said olefin contains up to about 25 carbon atoms.
Claim 9
Dependent Claim
29 words
The process of claim 1 wherein said inorganic salt is present in an amount of up to about 2 grams, calculated as the metal per 100 grams of solvent.
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) | 1982-07-02 | 1983-01-01 | 1983-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-02 | 1987-01-01 | 1987-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-02 | 1991-01-01 | 1991-07-03 | $7700.00 | Window Closed / Lapsed |