US4041090A
Expired / Lapsed
US
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Ethylbenzene process using an unsupported perfluorinated polymer catalyst
Assignee: Shell USA Inc
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Filing: 1976-12-20
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Granted: 1977-08-09
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Expires: 1996-12-20
Abstract
Abstract A process and catalyst for the preparation of ethylbenzene is disclosed. The catalyst is an unsupported solid perfluorinated polymer containing pendent sulfonic acid groups.
Inventors
- 👤 James D. McClure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:37
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; B; B01; B01J; B01J31/00; B01J31/02; B01J31/06; B01J31/08; B01J31/10; C07C2/64; C07C2/66; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/323; C07C2531/00; C07C2531/02; C07C2531/06; C07C2531/08; C07C2531/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
124 words
A liquid phase process for the preparation of ethylbenzene which comprises contacting an ethylene feed stream with a benzene feed stream at a reaction temperature of between about 125° and about 225° C in the presence of an unsupported solid perfluorinated polymer catalyst wherein said catalyst contains a repeating structure selected from the group of: ##STR6## where n is 0, 1 or 2; R is a radical selected from the group consisting of fluorine and perfluoroalkyl radicals having from 1 to 10 carbon atoms; and X is selected from the group consisting of: [O(CF.sub.2).sub.m ], [OCF.sub.2 CFY] or [OCFYCF.sub.2 ] where m is an integer from 2 to 10 and Y is a radical selected from the class consisting of fluorine and trifluoromethyl radical.
Claim 2
Dependent Claim
124 words
A liquid phase process for the preparation of ethylbenzene which comprises contacting an ethylene feed stream with a benzene feed stream at a reaction temperature of between about 125° and about 225° C in the presence of an unsupported solid perfluorinated polymer catalyst wherein said catalyst contains a repeating structure selected from the group of: ##STR6## where n is 0, 1 or 2; R is a radical selected from the group consisting of fluorine and perfluoroalkyl radicals having from 1 to 10 carbon atoms; and X is selected from the group consisting of: [O(CF.sub.2).sub.m ], [OCF.sub.2 CFY] or [OCFYCF.sub.2 ] where m is an integer from 2 to 10 and Y is a radical selected from the class consisting of fluorine and trifluoromethyl radical.
Claim 3
Dependent Claim
25 words
A process according to claim 1 wherein the mole ratio of said benzene stream to said ethylene stream varies from about 1.5:1 to about 10:1.
Claim 4
Dependent Claim
39 words
A process according to claim 1 wherein the weight hourly space velocity, defined as the weight per hour of the reactants divided by the weight of catalyst employed, varies from between about 0.5 to about 20.0 hr.sup. -1 .
References Cited (Backward Citations)
US2802884A
Cited
US3708553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-08 | 1981-02-07 | 1981-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-08 | 1985-02-07 | 1985-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-08 | 1989-02-07 | 1989-08-09 | $7700.00 | Window Closed / Lapsed |