Patent US2800514A successfully refreshed from Google Patents.
US2800514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing alkylated hydroxy aromatic compounds
Assignee: General Electric Co
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Filing: 1955-01-07
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Granted: 1957-07-23
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Expires: 1975-01-07
Abstract
No abstract record available.
Inventors
- 👤 Charles T Hathaway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:19
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/11; C07C37/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
THE PROCESS OF PREPARING AN ALKYLATED HYDROXY AROMATIC COMPOUND WITH COMPRISES THE STEPS IN SEQUENCE OF REACTING A PHENOL HAVING AT LEAST ONE UNSUBSTITUTED NUCLEAR CARBON ATOM AND CONTAINING NOT MORE THAN 0,4 PERCENT BY WEIGHT OF MOISTURE WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALUMINUM CHLORIDE AND ALUMINUM, ADDING TO THE RESULTING REACTION MIXTURE A LONG-CHAIN CHLORINATED HYDROCARBON, CONTINUING THE REACTION AT A TEMPERATURE OF FROM ABOUT 100* TO 200*C. UNTIL THE EVOLUTION OF HYDROGEN CHLORIDE IS NEGLIGIBLE, FILTERING THE HOT REACTION PRODUCTS TO OBTAIN A FILTRATE AND A FILLTER CAKE COMPRISING UNHYDROLYZED ALUMINUM SALTS, RECOVERING AN ALKYLATED HYDROXY AROMATIC COMPOUND AND UNREACTED PHENOL FROM SAID FILTRATE, AND RECYCLING SAID UNREACTED PHENOL AND SAID FILTER CAKE AS CATALYST FOR FURTHER REACTION.
Claim 2
Dependent Claim
124 words
THE PROCESS OF PREPARING AN ALKYLATED HYDROXY AROMATIC COMPOUND WITH COMPRISES THE STEPS IN SEQUENCE OF REACTING A PHENOL HAVING AT LEAST ONE UNSUBSTITUTED NUCLEAR CARBON ATOM AND CONTAINING NOT MORE THAN 0,4 PERCENT BY WEIGHT OF MOISTURE WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALUMINUM CHLORIDE AND ALUMINUM, ADDING TO THE RESULTING REACTION MIXTURE A LONG-CHAIN CHLORINATED HYDROCARBON, CONTINUING THE REACTION AT A TEMPERATURE OF FROM ABOUT 100* TO 200*C. UNTIL THE EVOLUTION OF HYDROGEN CHLORIDE IS NEGLIGIBLE, FILTERING THE HOT REACTION PRODUCTS TO OBTAIN A FILTRATE AND A FILLTER CAKE COMPRISING UNHYDROLYZED ALUMINUM SALTS, RECOVERING AN ALKYLATED HYDROXY AROMATIC COMPOUND AND UNREACTED PHENOL FROM SAID FILTRATE, AND RECYCLING SAID UNREACTED PHENOL AND SAID FILTER CAKE AS CATALYST FOR FURTHER REACTION.
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) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |