Patent US4291185A successfully refreshed from Google Patents.
US4291185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylation of benzene in petroleum
Assignee: Mobil Oil AS
•
Filing: 1979-08-08
•
Granted: 1981-09-22
•
Expires: 1999-08-08
Abstract
Abstract A process for selective propylation of the benzene content of hydrocarbon mixtures wherein the mixture is brought into contact with propylene in the presence of a crystalline zeolite catalyst having a silica to alumina mole ratio of at least about 12 and a constraint index of from 1 to 12, to produce isopropylbenzene and diisopropylbenzene. The reaction may be carried out at temperatures of from about 100 DEG C. to the critical temperature of the benzene and at pressures ranging between about 105 N/m2 and 6x106 N/m2.
Inventors
- 👤 Warren W. Kaeding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:36
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/70
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
77 words
A process for the selective reaction of benzene relative to toluene in hydrocarbon mixtures comprising benzene, toluene and other aliphatic and aromatic hydrocarbons, said selective conversion process comprising contacting said hydrocarbon mixture with propylene, at a temperature of between about 100° C. and the critical temperature of the benzene reactant at a pressure of between about 10 5 N/m 2 and about 6×10 6 N/m 2 , in the presence of a selective catalyst comprising ZSM-12 zeolites.
Claim 2
Dependent Claim
77 words
A process for the selective reaction of benzene relative to toluene in hydrocarbon mixtures comprising benzene, toluene and other aliphatic and aromatic hydrocarbons, said selective conversion process comprising contacting said hydrocarbon mixture with propylene, at a temperature of between about 100° C. and the critical temperature of the benzene reactant at a pressure of between about 10 5 N/m 2 and about 6×10 6 N/m 2 , in the presence of a selective catalyst comprising ZSM-12 zeolites.
Claim 3
Dependent Claim
34 words
A process as defined in claim 1 wherein said propylene is contained in a mixture comprising both propane and propylene, said propane remaining substantially unreacted and being recovered at the end of said process.
Claim 4
Dependent Claim
19 words
A process as defined in claim 1 wherein said temperature is between about 150° C. and about 250° C.
Claim 5
Dependent Claim
16 words
A process as defined in claim 1 wherein said zeolite is combined with a binder therefor.
Claim 6
Dependent Claim
58 words
A process for upgrading motor fuels containing benzene therein, said process comprising contacting said motor fuel with propylene, at a temperature of between about 100° C. and the critical temperature of said benzene and a pressure of between about 10 5 N/m 2 and 6×10 6 N/m 2 , in the presence of a crystalline zeolite comprising ZSM-12.
Claim 7
Dependent Claim
58 words
A process for upgrading motor fuels containing benzene therein, said process comprising contacting said motor fuel with propylene, at a temperature of between about 100° C. and the critical temperature of said benzene and a pressure of between about 10 5 N/m 2 and 6×10 6 N/m 2 , in the presence of a crystalline zeolite comprising ZSM-12.
Claim 8
Dependent Claim
19 words
A process as defined in claim 5 wherein said temperature is between about 150° C. and about 250° C.
Claim 9
Dependent Claim
16 words
A process as defined in claim 5 wherein said zeolite is combined with a binder therefor.
Claim 10
Dependent Claim
20 words
A process as defined in claim 5 wherein said propylene is contained in a mixture comprising both propane and propylene.
References Cited (Backward Citations)
US2881227A
Cited
US2904607A
Cited
US3251897A
Cited
US3385906A
Cited
US3702886A
Cited
US3832449A
Cited
US3767568A
Cited
US3843739A
Cited
US3776971A
Cited
US3778415A
Cited
US3755483A
Cited
US3751504A
Cited
US3751506A
Cited
US4016245A
Cited
US4046859A
Cited
US4076842A
Cited
US4049737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-21 | 1985-03-23 | 1985-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-21 | 1989-03-23 | 1989-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-21 | 1993-03-23 | 1993-09-22 | $7700.00 | Window Closed / Lapsed |