US3760022A
Expired / Lapsed
US
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Alkylation of aromatic hydrocarbons
Assignee: Universal Oil Products Co
•
Filing: 1971-11-08
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Granted: 1973-09-18
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Expires: 1991-11-08
Abstract
Abstract Aromatic hydrocarbons are alkylated with saturated hydrocarbons by treating the mixture of reactants with an alkyl halide in the presence of a Friedel-Crafts catalyst.
Inventors
- 👤 L Schmerling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:46
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/76; C07C2527/00; C07C2527/06; C07C2527/125; C07C2527/126; C07C2527/135; C07C2601/00; C07C2601/06; C07C2601/08; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
39 words
The process as set forth in claim 1 in which said alkylation conditions include a temperature in the range of from about 0* to about 250*C. and a pressure in the range of from atmospheric to about 100 atmospheres.
Claim 2
Dependent Claim
16 words
The process as set forth in claim 1 in which said Friedel-Crafts catalyst is aluminum chloride.
Claim 3
Dependent Claim
16 words
The process as set forth in claim 1 in which said Friedel-Crafts catalyst is zirconium chloride.
Claim 4
Dependent Claim
19 words
The process as set forth in claim 1 in which said alkyl halide is t-butyl chloride or benzyl chloride.
Claim 5
Dependent Claim
28 words
The process as set forth in claim 1 in which said aromatic hydrocarbon is benzene, said saturated hydrocarbon is isopentane and said alkylated hydrocarbon is t-pentylbenzene and sec-isopentylbenzene.
Claim 6
Dependent Claim
27 words
The process as set forth in claim 1 in which said aromatic hydrocarbon is benzene, said saturated hydrocarbon is 3-methylhexane, and said alkylated hydrocarbon is branched-chain heptylbenzenes.
Claim 7
Dependent Claim
29 words
The process as set forth in claim 1 in which said aromatic hydrocarbon is toluene, said saturated hydrocarbon is isopentane, and said alkylated hydrocarbon is a mixture of pentyltoluenes.
Claim 8
Dependent Claim
29 words
The process as set forth in claim 1 in which said aromatic hydrocarbon is benzene, said saturated hydrocarbon is methylcyclopentane, and said alkylated hydrocarbon is a mixture of methylcyclopentylbenzenes.
Claim 9
Dependent Claim
29 words
The process as set forth in claim 1 in which said aromatic hydrocarbon is toluene, said saturated hydrocarbon is 2,3-dimethylbutane, and said alkylated hydrocarbon is a mixture of hexyLtoluenes.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |