US3351654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing biodegradable alkylbenzene sulfonates by dimerizing an olefin of 5 to 10 carbon atoms with a silica-alumina catalyst
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1961-05-19
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Granted: 1967-11-07
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Expires: 1981-05-19
Abstract
No abstract record available.
Inventors
- 👤 David A Gudelis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:32
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/10; C07C309/00; C07C309/01; C07C309/28; C07C309/29; C07C309/30; C07C309/31; C10; C10G; C10G9/00; C07C2521/00; C07C2521/12; C10M; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/28; C10M2207/282; C10M2207/32; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/086; C10M2219/087; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2050/00; C10N2050/015; C10N2050/02; C10N2050/10; C10N2070/00; C10N2070/02; Y; Y10; Y10S; Y10S585/00; Y10S585/909; Y10S585/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS FOR THE PREPARATION OF BIODEGRADABLE ALKYLBENZENE SULFONATES COMPRISING CONTACTING A HYDROCARBON FEED CONSISTING ESSENTIALLY OF STRAIGHT-CHAIN ALPHAMONO-OLEFIN HYDROCARBONS OF 5 TO 10 CARBON ATOMS WITH A SILICA-ALUMINA CATALYST HAVING A WEIGHT RATIO OF SILICA TO ALUMINA OF 1:1 TO 10:1 AT A TEMPERATURE OF 93-250*C. AND AT A PRESSURE OF 200 TO 1500 P.S.I.G., FRACTIONATING THE REACTION PRODUCT TO OBTAIN A DIMER-CONTAINING FRACTION, SUBJECTING SAID FRACTION TO ALKYLATION CONDITIONS IN THE PRESENCE OF BENZENE AND ALUMINUM CHLORIDE AND THEREAFTER SUBJECTING THE RESULTING ALKYLBEZENES TO SULFONATION.
Claim 2
Dependent Claim
87 words
A PROCESS FOR THE PREPARATION OF BIODEGRADABLE ALKYLBENZENE SULFONATES COMPRISING CONTACTING A HYDROCARBON FEED CONSISTING ESSENTIALLY OF STRAIGHT-CHAIN ALPHAMONO-OLEFIN HYDROCARBONS OF 5 TO 10 CARBON ATOMS WITH A SILICA-ALUMINA CATALYST HAVING A WEIGHT RATIO OF SILICA TO ALUMINA OF 1:1 TO 10:1 AT A TEMPERATURE OF 93-250*C. AND AT A PRESSURE OF 200 TO 1500 P.S.I.G., FRACTIONATING THE REACTION PRODUCT TO OBTAIN A DIMER-CONTAINING FRACTION, SUBJECTING SAID FRACTION TO ALKYLATION CONDITIONS IN THE PRESENCE OF BENZENE AND ALUMINUM CHLORIDE AND THEREAFTER SUBJECTING THE RESULTING ALKYLBEZENES TO SULFONATION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |