Patent US2673224A successfully refreshed from Google Patents.
US2673224A
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Alkylation of aromatic hydrocarbons by isoparaffinic hydrocarbons
Assignee: Sunoco Inc
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Filing: 1949-12-16
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Granted: 1954-03-23
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Expires: 1969-12-16
Abstract
No abstract record available.
Inventors
- 👤 Robert M Kennedy
- 👤 Schneider Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:28
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/76; C07C2527/00; C07C2527/06; C07C2527/125; C07C2527/126; C07C2531/00; C07C2531/02; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
PROCESS FOR THE ALKYLATION OF TOLUENE WITH ISOPARAFFIN HYDROCARBONS WHICH COMPRISES REACTING, AT A TEMPERATURE OF FROM 40* C. TO 70* C. AND AT SUBSTANTIALLY ATMOSPHERIC PRESSURE, TOLUENE WITH AN ISOPARAFFIN HAVING AT LEAST FIVE CARBON ATOMS AND ONE TERTIARY HYDROGEN ATOM PER MOLECULE IN THE PRESENCE OF A CATALYST COMPRISING AN ADMIXTURE OF TERTIARY BUTYL CHLORIDE AND ALCL3, SAID ADMIXTURE HAVING BEEN PREPARED BY BRINGING TOGETHER SAID TERTIARY CHLORIDE AND SAID ALCL3 IN THE PRESENCE OF SAID AROMATIC AND SAID ISOPARAFFIN, AND RECOVERING AN ALKYLATED AROMATIC HAVING AN ALKYL GROUP CONTAINING THE SAME NUMBER OF CARBON ATOMS AS SAID SATURATE HYDROCARBON REACTANT.
Claim 2
Dependent Claim
103 words
PROCESS FOR THE ALKYLATION OF TOLUENE WITH ISOPARAFFIN HYDROCARBONS WHICH COMPRISES REACTING, AT A TEMPERATURE OF FROM 40* C. TO 70* C. AND AT SUBSTANTIALLY ATMOSPHERIC PRESSURE, TOLUENE WITH AN ISOPARAFFIN HAVING AT LEAST FIVE CARBON ATOMS AND ONE TERTIARY HYDROGEN ATOM PER MOLECULE IN THE PRESENCE OF A CATALYST COMPRISING AN ADMIXTURE OF TERTIARY BUTYL CHLORIDE AND ALCL3, SAID ADMIXTURE HAVING BEEN PREPARED BY BRINGING TOGETHER SAID TERTIARY CHLORIDE AND SAID ALCL3 IN THE PRESENCE OF SAID AROMATIC AND SAID ISOPARAFFIN, AND RECOVERING AN ALKYLATED AROMATIC HAVING AN ALKYL GROUP CONTAINING THE SAME NUMBER OF CARBON ATOMS AS SAID SATURATE HYDROCARBON REACTANT.
References Cited (Backward Citations)
US2009108A
Cited
US2088598A
Cited
US2104424A
Cited
US2361065A
Cited
US2379368A
Cited
US2433020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |