US2849508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Side chain alkylation of alkylaromatics with olefins using an organometallic compound as catalyst
Assignee: Universal Oil Products Co
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Filing: 1955-06-08
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Granted: 1958-08-26
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Expires: 1975-06-08
Abstract
No abstract record available.
Inventors
- 👤 Pines Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:34
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/72; C07C2523/00; C07C2523/02; C07C2523/04; C07C2531/00; C07C2531/02; C07C2531/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN A PROCESS WHICH COMPRISES REACTING A NONCONJUGATED OLEFINIC HYDROCARBON AND AN AROMATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF CARBOCYCLIC AROMATIC AND HETEROCYCLIC AROMATIC RING COMPOUNDS HAVING ATTACHED TO A NUCLEAR CARBON ATOM AND A CARBON ATOM OF A HYDROCARBON GROUP SELECTED FROM THE GROUP CONSISTING OF AN ALKYL GROUP, A CYCLOALKYL GROUP, A CYCLOALKALKYL GROUP, AND AN ARALKYL GROUP, AND TO WHICH LAST-NAMED CARBON ATOM IS ATTACHED AT LEAST ONE HYDROGEN ATOM, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE REACTION AT A TEMPERATURE OF FROM ABOUT 100* TO ABOUT 350*C. AND AT A PRESSURE OF FROM ABOUT 5 TO ABOUT 50 ATMOSPHERES IN THE PRESENCE OF A FREE ALKALI METAL AND OF A MINOR PROMOTING AMOUNT OF A CONJUGATED POLYOLEFINIC HYDROCARBON CAPABLE OF REACTING WITH A PORTION OF SAID FREE ALKALI METAL TO FORM AN ORGANOALKALI METAL COMPOUND, AND RECOVERING THE RESULTANT CONDENSATION PRODUCTS.
Claim 2
Dependent Claim
146 words
IN A PROCESS WHICH COMPRISES REACTING A NONCONJUGATED OLEFINIC HYDROCARBON AND AN AROMATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF CARBOCYCLIC AROMATIC AND HETEROCYCLIC AROMATIC RING COMPOUNDS HAVING ATTACHED TO A NUCLEAR CARBON ATOM AND A CARBON ATOM OF A HYDROCARBON GROUP SELECTED FROM THE GROUP CONSISTING OF AN ALKYL GROUP, A CYCLOALKYL GROUP, A CYCLOALKALKYL GROUP, AND AN ARALKYL GROUP, AND TO WHICH LAST-NAMED CARBON ATOM IS ATTACHED AT LEAST ONE HYDROGEN ATOM, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE REACTION AT A TEMPERATURE OF FROM ABOUT 100* TO ABOUT 350*C. AND AT A PRESSURE OF FROM ABOUT 5 TO ABOUT 50 ATMOSPHERES IN THE PRESENCE OF A FREE ALKALI METAL AND OF A MINOR PROMOTING AMOUNT OF A CONJUGATED POLYOLEFINIC HYDROCARBON CAPABLE OF REACTING WITH A PORTION OF SAID FREE ALKALI METAL TO FORM AN ORGANOALKALI METAL COMPOUND, AND RECOVERING THE RESULTANT CONDENSATION PRODUCTS.
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) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |