US2841623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the alkylation of phenols
Assignee: Shell Development Co
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Filing: 1957-05-08
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Granted: 1958-07-01
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Expires: 1977-05-08
Abstract
No abstract record available.
Inventors
- 👤 Douglas G Norton
- 👤 Rupert C Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:55
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/11; C07C37/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PROCESS FOR THE NUCLEAR ALKYLATION OF A PHENOL HAVING A HYDROGEN BONDED TO THE AROMATIC NUCLEUS IN AT LEAST ONE OF THE POSITIONS ORTHO- AND PARA- TO THE PHENOLIC HYDROXYL GROUP, WHICH COMPRISES REACTING SAID PHENOL WITH FROM ABOUT 0.05 TO ABOUT 2 MOLES OF A SATURATED ALDEHYDE PER MOLE OF PHENOL, AT TEMPERATURES BETWEEN ABOUT 150*C. AND ABOUT 350*C., THE REACTION BEING CONDUCTED IN THE PRESENCE OF FROM ABOUT 0.05 TO ABOUT 3 MOLES OF A BASIC ACTING MATERIAL PER MOLE OF PHENOL, IN THE PRESENCE OF AT LEAST ABOUT 5 MOLES PER MOLE OF PHENOL OF A PRIMARY ALKANOL HAVING FROM 1 TO 8 CARBON ATOMS, AND AT A PRESSURE SUFFICIENT TO MAINTAIN THE REACTANTS IN THEIR LIQUID STATE.
Claim 2
Dependent Claim
122 words
A PROCESS FOR THE NUCLEAR ALKYLATION OF A PHENOL HAVING A HYDROGEN BONDED TO THE AROMATIC NUCLEUS IN AT LEAST ONE OF THE POSITIONS ORTHO- AND PARA- TO THE PHENOLIC HYDROXYL GROUP, WHICH COMPRISES REACTING SAID PHENOL WITH FROM ABOUT 0.05 TO ABOUT 2 MOLES OF A SATURATED ALDEHYDE PER MOLE OF PHENOL, AT TEMPERATURES BETWEEN ABOUT 150*C. AND ABOUT 350*C., THE REACTION BEING CONDUCTED IN THE PRESENCE OF FROM ABOUT 0.05 TO ABOUT 3 MOLES OF A BASIC ACTING MATERIAL PER MOLE OF PHENOL, IN THE PRESENCE OF AT LEAST ABOUT 5 MOLES PER MOLE OF PHENOL OF A PRIMARY ALKANOL HAVING FROM 1 TO 8 CARBON ATOMS, AND AT A PRESSURE SUFFICIENT TO MAINTAIN THE REACTANTS IN THEIR LIQUID STATE.
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) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |