US4808757A
Expired / Lapsed
US
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Process for the preparation of aldehydes
Assignee: Hoechst AG
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Filing: 1988-05-13
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Granted: 1989-02-28
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Expires: 2008-05-13
Abstract
Abstract A process for the preparation of aldehydes by hydroformylation of olefins in the presence of an aqueous solution containing rhodium as a catalyst. The aqueous solution preferably contains rhodium in a concentration of 450 to 800 weight-ppm and sulfonated or carboxylated triarylphosphines as complex ligands in a concentration of 25 to 30% by weight, both based on the aqueous solution.
Inventors
- 👤 Boy Cornils
- 👤 Werner Konkol
- 👤 Hanswilhelm Bach
- 👤 Wilhelm Gick
- 👤 Ernst Wiebus
- 👤 Helmut Bahrmann
- 👤 Heinz-Dieter Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:25
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/49; C07C45/50; C07C47/00; C07C47/02
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
81 words
A process for the preparation of aldehydes by the reaction of aliphatic olefins having 2 to 12 carbon atoms with carbon monoxide and hydrogen in the liquid phase in the presence of water, rhodium, and at least one water-soluble salt of a sulfonated or carboxylated triarylphosphine, wherein the concentration of said rhodium in the aqueous phase is 450 to 800 weight-ppm and the concentration of said triarylphosphines is 25 to 30% by weight, in each case based on the aqueous solution.
Claim 2
Dependent Claim
81 words
A process for the preparation of aldehydes by the reaction of aliphatic olefins having 2 to 12 carbon atoms with carbon monoxide and hydrogen in the liquid phase in the presence of water, rhodium, and at least one water-soluble salt of a sulfonated or carboxylated triarylphosphine, wherein the concentration of said rhodium in the aqueous phase is 450 to 800 weight-ppm and the concentration of said triarylphosphines is 25 to 30% by weight, in each case based on the aqueous solution.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein said rhodium is a metallic form.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein said rhodium is present as a compound.
Claim 5
Dependent Claim
19 words
The process of claim 1 wherein said concentration is 26% to 28% by weight based on said aqueous solution.
Claim 6
Dependent Claim
19 words
The process of claim 2 wherein said concentration is 26% to 28% by weight based on said aqueous solution.
Claim 7
Dependent Claim
19 words
The process of claim 3 wherein said concentration is 26% to 28% by weight based on said aqueous solution.
Claim 8
Dependent Claim
27 words
The process of claim 1 wherein said rhodium is present in said aqueoous solution in a concentration of 500 to 600 weight-ppm, based on said aqueous solution.
Claim 9
Dependent Claim
27 words
The process of claim 2 wherein said rhodium is present in said aqueous solution in a concentration of 500 to 600 weight-ppm, based on said aqueous solution.
Claim 10
Dependent Claim
27 words
The process of claim 3 wherein said rhodium is present in said aqueous solution in a concentration of 500 to 600 weight-ppm, based on said aqueous solution.
Claim 11
Dependent Claim
27 words
The process of claim 4 wherein said rhodium is present in said aqueous solution in a concentration of 500 to 600 weight-ppm, based on said aqueous solution.
Claim 12
Dependent Claim
27 words
The process of claim 5 wherein said rhodium is present in said aqueous solution in a concentration of 500 to 600 weight-ppm, based on said aqueous solution.
Claim 13
Dependent Claim
27 words
The process of claim 6 wherein said rhodium is present in said aqueous solution in a concentration of 500 to 600 weight-ppm, based on said aqueous solution.
Claim 14
Dependent Claim
178 words
The process of claim 1 wherein said triarylphosphine is of the formula ##STR2## wherein Ar 1 , Ar 2 , and Ar 3 are individually phenyl or napthyl; Y 1 Y 2 , and Y 3 are individually a straight-chain or branched alkyl group having 1 to 4 carbon atoms, an alkoxyl group, a halogen atom, OH, CN, NO 2 , or R 1 R 2 N groups wherein R 1 and R 2 are individually a straight-chain or branched alkyl group having 1 to 4 carbon atoms; X 1 , X 2 , and X 3 are individually sulfonate or carboxylate; n 1 , n 2 , and n 3 are individually a whole number from 0 to 5; M is an alkali metal ion, the equivalent of an alkaline earth metal or zinc ion, an ammonium ion, or a quaternery alklylammonium ion of the formula N(R 3 R 4 R 5 R 6 ) + , wherein R 3 , R 4 , R 5 , and R 6 are individually a straight-chain or branched alkyl.
Claim 15
Dependent Claim
28 words
The process of claim 13 wherein R 3 , R 4 , R 5 , and R 6 are individually an alkyl having 1 to 4 carbon atoms.
Claim 16
Dependent Claim
32 words
The process of claim 13 wherein Ar 1 , Ar 2 , and Ar 3 are phenyl and X 1 , X 2 , and X 3 are individually sulfonate or carboxylate.
Claim 17
Dependent Claim
27 words
The process of claim 13 wherein said triarylphosphine is taken from the class consisting of triphenylphosphine trisodium trisulfonate, triphenylphosphine tri(tetraalkylammonium) trisulfonate, triphenylphosphine trisodium tricarboxylate, and mixtures thereof.
References Cited (Backward Citations)
US4248802A
Cited
US4299990A
Cited
US4399312A
Cited
US4533757A
Cited
US4577043A
Cited
US4593126A
Cited
US4578523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-28 | 1992-08-29 | 1993-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-28 | 1996-08-29 | 1997-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-28 | 2000-08-29 | 2001-02-28 | $7700.00 | Window Closed / Lapsed |