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US4340769A
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US
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Process for the continuous production of lower aliphatic alcohols
Assignee: Wintershall Dea International AG
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Filing: 1978-09-25
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Granted: 1982-07-20
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Expires: 1998-09-25
Abstract
Abstract A method is provided for the continuous production of saturated aliphatic alcohols having from 2 to 5 carbon atoms by hydrating the corresponding aliphatic olefin in the presence of a sulfonated styrene-divinylbenzene copolymer catalyst having a specific surface area measured in the dry state employing the BET method of: (a) less than 1 m2/g if the water-wet resin is dried, and (b) greater than 1 m2/g if the water is displaced from the water-wet resin by a slightly polar or a nonpolar organic solvent and the so dewatered resin is dried.
Inventors
- 👤 Gunter Brandes
- 👤 Wilhelm Neier
- 👤 Johannes Wollner
- 👤 Werner Webers
- 👤 Walter F. deVleesschauwer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:32
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/03; C07C29/04; B; B01; B01J; B01J31/00; B01J31/02; B01J31/06; B01J31/08; B01J31/10; B01J35/00; B01J35/60; B01J35/61; B01J35/612; B01J8/00; B01J8/02; B01J2208/00; B01J2208/00008; B01J2208/00539; B01J2231/00; B01J2231/30; B01J2231/32
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
185 words
In a process for preparing a saturated aliphatic alcohol having from 2 to 5 carbon atoms in a closed fixedbed reactor containing a sulfonated synthetic aryl cation exchange resin catalyst by reacting a water-olefin feed mixture in which said olefin component consists of at least 75 mole percent of a C 2 to C 5 aliphatic olefin and said water-olefin feed mixture consists of from about 1 to 40 moles of water per mole of said olefin, under hydration conditions at a temperature from about 120° to 180° C. and a pressure ranging from about 60 to 200 atmospheres gauge to recover an effluent reaction mixture rich in said saturated aliphatic alcohol, the improvement which comprises employing a sulfonated styrene-divinylbenzene copolymer cation exchange resin catalyst having a specific surface area measured in the dry state employing the BET method, of: (a) less than 1 m 2 /g, when the water-wet resin in dried, and (b) greater than 1 m 2 /g, when the water is displaced from the water-wet resin by a slightly polar or a non-polar organic solvent and the dewatered resin then dried.
Claim 2
Dependent Claim
185 words
In a process for preparing a saturated aliphatic alcohol having from 2 to 5 carbon atoms in a closed fixedbed reactor containing a sulfonated synthetic aryl cation exchange resin catalyst by reacting a water-olefin feed mixture in which said olefin component consists of at least 75 mole percent of a C 2 to C 5 aliphatic olefin and said water-olefin feed mixture consists of from about 1 to 40 moles of water per mole of said olefin, under hydration conditions at a temperature from about 120° to 180° C. and a pressure ranging from about 60 to 200 atmospheres gauge to recover an effluent reaction mixture rich in said saturated aliphatic alcohol, the improvement which comprises employing a sulfonated styrene-divinylbenzene copolymer cation exchange resin catalyst having a specific surface area measured in the dry state employing the BET method, of: (a) less than 1 m 2 /g, when the water-wet resin in dried, and (b) greater than 1 m 2 /g, when the water is displaced from the water-wet resin by a slightly polar or a non-polar organic solvent and the dewatered resin then dried.
Claim 3
Dependent Claim
98 words
A process according to claim 1, in which said catalyst has a specific surface area of less than about 1 m 2 /g when it is digested with excess water, freed of the excess water by filtration and vacuumed dried at about 80° C. and which has a specific surface area of greater than about 1 m 2 /g when, subsequent to the treatment with water, said water is displaced first by a lower aliphatic alcohol, followed by treatment with an aromatic hydrocarbon and finally by treatment with an aliphatic hydrocarbon and then vacuumed dried at 80° C.
Claim 4
Dependent Claim
20 words
A process according to claim 1, in which said water is displaced in successive treatment with methanol, benzene and isooctane.
Claim 5
Dependent Claim
61 words
A process according to claim 1, in which said catalyst has a pore volume of less than about 0.1 ml/g when the water-wet resin is dried, and which has a pore volume of greater than about 0.1 ml/g when the water in said water-wet resin is displaced by a slightly polar or a non-polar organic solvent and then dewatered and dried.
Claim 6
Dependent Claim
27 words
A process according to claim 1, in which said styrene-divinylbenzene copolymer catalyst consists of from 80 to 95 percent styrene and from 20 to 5 percent divinylbenzene.
Claim 7
Dependent Claim
29 words
A process according to claim 1, in which said ion exchange resin catalyst copolymer consists of from 80 to 90 percent styrene and from 10 to 20 percent divinylbenzene.
Claim 8
Dependent Claim
46 words
A process according to claim 1, in which the specific surface area of the catalyst is greater than 2 m 2 /g when the water is displaced from the water-wet resin by a slightly polar or a non-polar organic solvent and the dewatered resin then dried.
Claim 9
Dependent Claim
24 words
A process according to claim 1, in which said drying is conducted in a vacuum at a temperature of 80° C. for 12 hours.
Claim 10
Dependent Claim
30 words
A process according to claim 1, in which said ion exchange resin catalyst contains from about 0.2 to 1 sulfonic acid groups per aromatic ring in the cation exchange resin.
Claim 11
Dependent Claim
167 words
In a process for preparing isopropyl alcohol in a closed fixed-bed reactor containing a sulfonated synthetic aryl cation exchange resin catalyst by reacting water-olefin feed mixture in which said olefin component consists of at least 75 mole percent of propylene and said water-olefin feed mixture consists of from about 1 to 40 moles of water per mole of said propylene, under hydration conditions at a temperature from about 120° to 180° C. and a pressure ranging from about 60 to 200 atmospheres gauge to recover an effluent reaction mixture rich in said isopropyl alcohol, the improvement which comprises employing a sulfonated styrene-divinylbenzene copolymer cation exchange resin catalyst having a specific surface area measured in the dry state employing the BET method, of: (a) less than 1 m 2 /g, when the water-wet resin in dried, and (b) greater than 1 m 2 /g, when the water is displaced from the water-wet resin by a slightly polar or a non-polar organic solvent and the dewatered resin then dried.
Claim 12
Dependent Claim
167 words
In a process for preparing isopropyl alcohol in a closed fixed-bed reactor containing a sulfonated synthetic aryl cation exchange resin catalyst by reacting water-olefin feed mixture in which said olefin component consists of at least 75 mole percent of propylene and said water-olefin feed mixture consists of from about 1 to 40 moles of water per mole of said propylene, under hydration conditions at a temperature from about 120° to 180° C. and a pressure ranging from about 60 to 200 atmospheres gauge to recover an effluent reaction mixture rich in said isopropyl alcohol, the improvement which comprises employing a sulfonated styrene-divinylbenzene copolymer cation exchange resin catalyst having a specific surface area measured in the dry state employing the BET method, of: (a) less than 1 m 2 /g, when the water-wet resin in dried, and (b) greater than 1 m 2 /g, when the water is displaced from the water-wet resin by a slightly polar or a non-polar organic solvent and the dewatered resin then dried.
Claim 13
Dependent Claim
98 words
A process according to claim 10 in which said catalyst has a specific surface area of less than about 1 m 2 /g when it is digested with excess water, freed of the excess water by filtration and vacuumed dried at about 80° C. and which has a specific surface area of greater than about 1 m 2 /g when, subsequent to the treatment with water, said water is displaced first by a lower aliphatic alcohol, followed by treatment with an aromatic hydrocarbon and finally by treatment with an aliphatic hydrocarbon and then vacuumed dried at 80° C.
Claim 14
Dependent Claim
44 words
A process according to claim 10 in which the specific surface area of the catalyst is greater than 2 m/g when the water is displaced from the water-wet resin by a slightly polar or a non-polar organic solvent and the dewatered resin then dried.
Claim 15
Dependent Claim
20 words
A process according to claim 10 in which said water is displaced in successive treatment with methanol, benzene and isooctane.
Claim 16
Dependent Claim
61 words
A process according to claim 1 in which said catalyst has a pore volume of less than about 0.1 ml/g when the water-wet resin is dried, and which has a pore volume of greater than about 0.1 ml/g when the water in said water-wet resin is displaced by a slightly polar or a non-polar organic solvent and then dewatered and dried.
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) | 1985-07-19 | 1986-01-18 | 1986-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-19 | 1990-01-18 | 1990-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-19 | 1994-01-18 | 1994-07-20 | $7700.00 | Window Closed / Lapsed |