Patent US4316997A successfully refreshed from Google Patents.
US4316997A
Expired / Lapsed
US
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Alkylation process and apparatus useful therein
Assignee: Varen Technology
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Filing: 1979-08-07
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Granted: 1982-02-23
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Expires: 1999-08-07
Abstract
Abstract This invention relates to conversion processes which take place in the presence of solid acid catalysts, e.g., hydrocarbon conversion processes. More specifically, this invention relates to a liquid phase process for the alkylation of aromatic hydrocarbons, with olefin, e.g., ethylene, propylene, etc., in the presence of a polyfluorosulfonic acid catalyst.
Inventors
- 👤 Ronald J. Vaughan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:03
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/08; C07C4/12; C07C4/14; C07C4/18; B; B01; B01J; B01J31/00; B01J31/02; B01J31/06; B01J31/08; B01J31/10; C07C5/00; C07C5/22; C07C5/27; C07C5/2729; C07C5/2732; C07C5/2756; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/323; C07C2531/00; C07C2531/02; C07C2531/06; C07C2531/08; C07C2531/10; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
45 words
A liquid phase process for the alkylation of an aromatic hydrocarbon with an olefin which comprises contacting said aromatic hydrocarbon and said olefin, at reaction conditions, in the presence of a copolymer of a perfluorovinyl ether and tetrafluoroethylene containing pendant sulfonic acid groups, as catalyst.
Claim 2
Dependent Claim
45 words
A liquid phase process for the alkylation of an aromatic hydrocarbon with an olefin which comprises contacting said aromatic hydrocarbon and said olefin, at reaction conditions, in the presence of a copolymer of a perfluorovinyl ether and tetrafluoroethylene containing pendant sulfonic acid groups, as catalyst.
Claim 3
Dependent Claim
54 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 50° and about 200° C. in the presence of an unsupported catalyst comprising a copolymer of a perfluorovinyl ether and tetrafluoroethylene containing pendant sulfonic acid groups.
Claim 4
Dependent Claim
54 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 50° and about 200° C. in the presence of an unsupported catalyst comprising a copolymer of a perfluorovinyl ether and tetrafluoroethylene containing pendant sulfonic acid groups.
Claim 5
Dependent Claim
25 words
A process according to claim 2 wherein the mole ratio of said benzene stream to said ethylene stream varies from about 1.5:1 to about 10:1.
Claim 6
Dependent Claim
40 words
A process according to claim 2 wherein the weight hourly space velocity, defined as the weight per hour of the reactants divided by the weight of the catalyst employed varies from between about 0.5 to about 20.0 hr -1 .
Claim 7
Dependent Claim
54 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 0° and about 200° C. in the presence of an unsupported catalyst comprising a copolymer of a perfluorovinyl ether and tetrafluoroethylene containing pendant sulfonic acid groups.
Claim 8
Dependent Claim
54 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 0° and about 200° C. in the presence of an unsupported catalyst comprising a copolymer of a perfluorovinyl ether and tetrafluoroethylene containing pendant sulfonic acid groups.
Claim 9
Dependent Claim
25 words
A process according to claim 5 wherein the mole ratio of said benzene stream to said ethylene stream varies from about 1.5:1 to about 10:1.
Claim 10
Dependent Claim
40 words
A process according to claim 5 wherein the weight hourly space velocity, defined as the weight per hour of the reactants divided by the weight of the catalyst employed varies from between about 0.5 to about 20.0 hr -1 .
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) | 1985-02-22 | 1985-08-24 | 1986-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-22 | 1989-08-24 | 1990-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-22 | 1993-08-24 | 1994-02-23 | $7700.00 | Window Closed / Lapsed |