US2810769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of long chain alkyl substituted aromatic hydrocarbons
Assignee: Sinclair Refining Co
•
Filing: 1954-04-01
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Granted: 1957-10-22
•
Expires: 1974-04-01
Abstract
No abstract record available.
Inventors
- 👤 Robert A Sanford
- 👤 Bernard S Friedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:06
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/70; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/10; C07C2527/11; C07C2527/125; C07C2527/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS FOR THE PRODUCTION OF LONG CHAIN TERTIARY ALKYL SUBSTITUTED MONOCYCLIC AROMATIC HYDROCARBONS IN WHICH THE ALKYL GROUP CONTAINS FROM 8 TO 20 CARBON ATOMS, WHICH COMPRISES REACTING A MONOCYCLIC AROMATIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF BENZENE AND TOLUENE WITH A SCISSION-SUSCEPTIBLE TERTIARY OLEFIN SELECTED FROM THE GROUP CONSISTING OF POLYMERS OF ISOBUTYLENE CONTAINING FROM 8 TO 20 CARBON ATOMS AND THEIR HYDROGEN HALIDE ADDITION PRODUCTS IN THE PRESENCE OF A CATALYST COMPRISING ALUMINUM CHLORIDE WHILE CONTROLLING THR TEMPERATURE AT ABOUT -65* TO -15*C.
Claim 2
Dependent Claim
87 words
A PROCESS FOR THE PRODUCTION OF LONG CHAIN TERTIARY ALKYL SUBSTITUTED MONOCYCLIC AROMATIC HYDROCARBONS IN WHICH THE ALKYL GROUP CONTAINS FROM 8 TO 20 CARBON ATOMS, WHICH COMPRISES REACTING A MONOCYCLIC AROMATIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF BENZENE AND TOLUENE WITH A SCISSION-SUSCEPTIBLE TERTIARY OLEFIN SELECTED FROM THE GROUP CONSISTING OF POLYMERS OF ISOBUTYLENE CONTAINING FROM 8 TO 20 CARBON ATOMS AND THEIR HYDROGEN HALIDE ADDITION PRODUCTS IN THE PRESENCE OF A CATALYST COMPRISING ALUMINUM CHLORIDE WHILE CONTROLLING THR TEMPERATURE AT ABOUT -65* TO -15*C.
References Cited (Backward Citations)
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US2437356A
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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) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |