US4080391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of alcohols
Assignee: Mitsui Toatsu Chemicals Inc
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Filing: 1976-01-23
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Granted: 1978-03-21
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Expires: 1996-01-23
Abstract
Abstract A process for the production of alcohols by the direct hydration of an olefin with water under liquid phase hydration conditions and in the presence of a catalytic amount of a sulfonic acid catalyst represented by the general formulae (1) or (2) ACF.sub.2 SO.sub.3 H (1) b(cf.sub.2 so.sub.3 h).sub.n (2) wherein A represents hydrogen, halogen, a sulfonic radical, a sulfodifluoromethyl radical or a monovalent unsubstituted aliphatic, alicyclic or aromatic residue consisting of hydrocarbon or fluorohydrocarbon radicals containing less than 20 carbon atoms and B represents a di-, tri- or tetravalent unsubstituted aliphatic, alicyclic or aromatic residue consisting of hydrocarbon or fluorohydrocarbon radicals containing less than 20 carbon atoms in direct corresponding to the value of n being 2, 3 or 4.
Inventors
- 👤 Ryuichiro Tsumura
- 👤 Toru Takahashi
- 👤 Toshiyuki Ichikawa
- 👤 Muneaki Kanemaru
- 👤 Norimichi Ishii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:40
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/03; C07C29/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
208 words
In the direct hydration of an olefin having from 2 to 20 carbon atoms with water under liquid phase hydration conditions to form an alcohol, the improvement comprising, the step of conducting said direct hydration at a temperature of 100° to 350° C., a pressure of 1 to 500 kg/cm 2 (G) and a mole ratio of water to olefin of 1:1 to 20:1 while the olefin is in contact with a catalytic amount in the range of 0.01 to 2% by weight of said water in the reation system of a sulfonic acid catalyst represented by the general formulae (1) or (2) ACF.sub.2 SO.sub.3 H (1) b(cf.sub.2 so.sub.3 h).sub.n ( 2) wherein A represents hydrogen, halogen, a sulfonic radical, a sulfodifluoromethyl radical or a monovalent unsubstituted aliphatic, alicyclic or aromatic residue consisting of hydrocarbon or fluorohydrocarbon radicals containing less than 20 carbon atoms and B represents a di-, tri- or tetravalent unsubstituted aliphatic, alicyclic or aromatic residue consisting of hydrocarbon or fluorohydrocarbon radicals containing less than 20 carbon atoms in direct correspondence to the value of n being 2,3 or 4, said sulfonic acid catalyst being thermally and chemically stable at temperatures higher than 200° C in the presence of said water, said olefin and said alcohol.
Claim 2
Dependent Claim
208 words
In the direct hydration of an olefin having from 2 to 20 carbon atoms with water under liquid phase hydration conditions to form an alcohol, the improvement comprising, the step of conducting said direct hydration at a temperature of 100° to 350° C., a pressure of 1 to 500 kg/cm 2 (G) and a mole ratio of water to olefin of 1:1 to 20:1 while the olefin is in contact with a catalytic amount in the range of 0.01 to 2% by weight of said water in the reation system of a sulfonic acid catalyst represented by the general formulae (1) or (2) ACF.sub.2 SO.sub.3 H (1) b(cf.sub.2 so.sub.3 h).sub.n ( 2) wherein A represents hydrogen, halogen, a sulfonic radical, a sulfodifluoromethyl radical or a monovalent unsubstituted aliphatic, alicyclic or aromatic residue consisting of hydrocarbon or fluorohydrocarbon radicals containing less than 20 carbon atoms and B represents a di-, tri- or tetravalent unsubstituted aliphatic, alicyclic or aromatic residue consisting of hydrocarbon or fluorohydrocarbon radicals containing less than 20 carbon atoms in direct correspondence to the value of n being 2,3 or 4, said sulfonic acid catalyst being thermally and chemically stable at temperatures higher than 200° C in the presence of said water, said olefin and said alcohol.
Claim 3
Dependent Claim
13 words
The method according to claim 1 wherein said catalyst is trifluoromethane sulfonic acid.
Claim 4
Dependent Claim
20 words
The method according to claim 1 wherein said catalyst is perfluoroethane sulfonic acid, perfluoropropane sulfonic acid or perfluorobutane sulfonic acid.
Claim 5
Dependent Claim
12 words
The method according to claim 1 wherein said catalyst is perfluoroethane-1,2-disulfonic acid.
Claim 6
Dependent Claim
12 words
The method according to claim 1 wherein said catalyst is difluoromethionic acid.
Claim 7
Dependent Claim
45 words
The method according to claim 1 for the production of ethyl alcohol from ethylene wherein the hydration is conducted at a temperature of from 250° to 300° C. under a pressure of 200 to 350 kg/cm 2 (G) in the presence of trifluoromethane sulfonic acid.
Claim 8
Dependent Claim
45 words
The method according to claim 1 for the production of isopropyl alcohol from propylene wherein the hydration is conducted at a temperature of from 150° to 250° C. under a pressure of 150 to 300 kg/cm 2 (G) in the presence of trifluoromethane sulfonic acid.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |