Patent US4065512A successfully refreshed from Google Patents.
US4065512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iso-C4 compound reactions with perfluorosulfonic acid resin catalysts
Assignee: Texas Petrochemicals Corp
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Filing: 1976-07-06
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Granted: 1977-12-27
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Expires: 1996-07-06
Abstract
Abstract Perfluorosulfonic acid resin membranes are active catalysts for the hydration and polymerization of isobutene and dehydration of t-butanol. The membranes offer unique advantages for hydration and dehydration since they are semi-permeable to water and impermeable to hydrocarbons.
Inventors
- 👤 William R. Cares
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:59
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/20; C07C1/24; B; B01; B01J; B01J10/00; B01J10/007; B01J14/00; B01J14/005; B01J35/00; B01J35/50; B01J35/58; B01J35/59; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C08; C08F; C08F10/00; C07C2531/00; C07C2531/02; C07C2531/06; C07C2531/08; C07C2531/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
54 words
A process for producing t-butanol comprising contacting isobutene and water with a membrane of a perfluorosulfonic acid resin which is the copolymer of sulfonyl fluorovinyl ether and a fluorocarbon at a temperature in the range of about 0° to 150° C, said membrane separating said isobutene and water and recovering a product containing t-butanol.
Claim 2
Dependent Claim
54 words
A process for producing t-butanol comprising contacting isobutene and water with a membrane of a perfluorosulfonic acid resin which is the copolymer of sulfonyl fluorovinyl ether and a fluorocarbon at a temperature in the range of about 0° to 150° C, said membrane separating said isobutene and water and recovering a product containing t-butanol.
Claim 3
Dependent Claim
11 words
The process according to claim 1 carried out in vapor phase.
Claim 4
Dependent Claim
11 words
The process according to claim 1 carried out in liquid phase.
Claim 5
Dependent Claim
18 words
The process according to claim 1 wherein the temperature is in the range of 15 to 90° C.
Claim 6
Dependent Claim
49 words
The process according to claim 1 where isobutene is contacted with one side of a membrane of perfluorosulfonic acid resin and water is contacted at the same time with the opposite side of said membrane at a temperature of 0° to 150° C and t-butanol recovered from the isobutene.
Claim 7
Dependent Claim
25 words
The process according to claim 5 wherein the process is continuous and the LHSV of the isobutene is in the range of 0.1 to 3.0.
Claim 8
Dependent Claim
90 words
In the process for the preparation of the t-butanol by reacting isobutene and water in the presence of an acid catalyst at temperatures in the range of about 120° to 150° C, wherein the improvement comprises employing as the acid catalyst a membrane of a perfluorosulfonic acid resin which is the copolymer of sulfonyl fluorovinyl ether and a fluorocarbon, contacting isobutene with one side of said membrane and water with the other side thereof, said membrane separating said isobutene and water and recovering t-butanol from said isobutene contacting said membrane.
Claim 9
Dependent Claim
90 words
In the process for the preparation of the t-butanol by reacting isobutene and water in the presence of an acid catalyst at temperatures in the range of about 120° to 150° C, wherein the improvement comprises employing as the acid catalyst a membrane of a perfluorosulfonic acid resin which is the copolymer of sulfonyl fluorovinyl ether and a fluorocarbon, contacting isobutene with one side of said membrane and water with the other side thereof, said membrane separating said isobutene and water and recovering t-butanol from said isobutene contacting said membrane.
Claim 10
Dependent Claim
15 words
The process according to claim 7 wherein said perfluorosulfonic acid resin membrane in a tube.
Claim 11
Dependent Claim
16 words
The process according to claim 17 wherein said membrane is about 2 to 20 mils thick.
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) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |