US3121123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of primary normal alkyl benzenes
Assignee: California Research LLC
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Filing: 1961-03-20
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Granted: 1964-02-11
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Expires: 1981-03-20
Abstract
No abstract record available.
Inventors
- 👤 Samuel H Sharman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:44
CPC Classifications
C; C07; C07C; C07C15/00; C07C15/02; C07C15/107; C07C2/00; C07C2/86; C07C2/861; C07C6/00; C07C6/08; C07C6/12; C07C6/126; C07C2527/00; C07C2527/06; C07C2527/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
PROCESS FOR THE PRODUCTION OF A C8-C20 MONOALKYL BENZENE MIXTURE PREDOMINATING IN AN ALKYL BENZENE CONTENT IN WHICH THE ALKYL GROUPS HAVING 8 TO 20 CARBON ATOMS ARE OF PRIMARY STRAIGHT-CHAIN STRUCTURE, WHICH COMPRISES ALKYLATING AN EXCESS OF CUMENE AT A TEMPERATURE IN THE RANGE -35*C. TO 10*C. WITH PRIMARY STRAIGHTCHAIN ALKYL BROMIDE OF 8 TO 20 CARBON ATOMS IN THE PRESENCE OF ALUMINUM BROMIDE CATALYST TO PRODUCE MONOALKYL-SUBSTITUTED CUMENE, SUBJECTING THE RESULTING ALKYLATE IN THE PRESENCE OF AN EXCESS OF BENZENE AND ADDITIONAL ALUMINUM BROMIDE TO A TEMPERATURE IN THE RANGE 0*C. TO 10*C. TO PRODUCE UNSUBSTITUTED CUMENE AND A MIXTURE OF MONOALKYLATED BENZENE PREDOMINATING IN PRIMARY STRAIGHT-CHAIN C8-C20 ALKYL BENZENE, AND RECOVERING SAID MIXTURE.
Claim 2
Dependent Claim
116 words
PROCESS FOR THE PRODUCTION OF A C8-C20 MONOALKYL BENZENE MIXTURE PREDOMINATING IN AN ALKYL BENZENE CONTENT IN WHICH THE ALKYL GROUPS HAVING 8 TO 20 CARBON ATOMS ARE OF PRIMARY STRAIGHT-CHAIN STRUCTURE, WHICH COMPRISES ALKYLATING AN EXCESS OF CUMENE AT A TEMPERATURE IN THE RANGE -35*C. TO 10*C. WITH PRIMARY STRAIGHTCHAIN ALKYL BROMIDE OF 8 TO 20 CARBON ATOMS IN THE PRESENCE OF ALUMINUM BROMIDE CATALYST TO PRODUCE MONOALKYL-SUBSTITUTED CUMENE, SUBJECTING THE RESULTING ALKYLATE IN THE PRESENCE OF AN EXCESS OF BENZENE AND ADDITIONAL ALUMINUM BROMIDE TO A TEMPERATURE IN THE RANGE 0*C. TO 10*C. TO PRODUCE UNSUBSTITUTED CUMENE AND A MIXTURE OF MONOALKYLATED BENZENE PREDOMINATING IN PRIMARY STRAIGHT-CHAIN C8-C20 ALKYL BENZENE, AND RECOVERING SAID MIXTURE.
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) | 1967-02-10 | 1967-08-12 | 1968-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-10 | 1971-08-12 | 1972-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-10 | 1975-08-12 | 1976-02-11 | $7700.00 | Window Closed / Lapsed |