US2833825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of acylphenols
Assignee: California Research LLC
•
Filing: 1954-03-22
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Granted: 1958-05-06
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Expires: 1974-03-22
Abstract
No abstract record available.
Inventors
- 👤 Allen H Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:42
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/76; C07C49/82; C07C49/825; C07C45/00; C07C45/51; C07C45/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS FOR THE PREPARATION OF PARA-ACYLPHENOLS, WHICH COMPRISES CONTACTING AN ESTER OF A SATURATED C7-C18 FATTY ACID AND PHENOL WITH ABOUT 6 TO 30 MOLS OF SUBSTANTIALLY ANHYDROUS LIQUID HYDROGEN FLUORIDE PER MOL OF THE ESTER AT A TEMPERATURE FROM ABOUT 0* TO 30*C. AND SUBSTANTIALLY ATMOSPHERIC PRESSURE TO CONVERT SAID ESTER TO A PRODUCT MIXTURE OF PREDOMINANTLY C7-C18 PARA-ACYLPHENOL, AND RECOVERING SAID PAR-ACYLPHENOL FROM SAID PRODUCT MIXTURE.
Claim 2
Dependent Claim
69 words
A PROCESS FOR THE PREPARATION OF PARA-ACYLPHENOLS, WHICH COMPRISES CONTACTING AN ESTER OF A SATURATED C7-C18 FATTY ACID AND PHENOL WITH ABOUT 6 TO 30 MOLS OF SUBSTANTIALLY ANHYDROUS LIQUID HYDROGEN FLUORIDE PER MOL OF THE ESTER AT A TEMPERATURE FROM ABOUT 0* TO 30*C. AND SUBSTANTIALLY ATMOSPHERIC PRESSURE TO CONVERT SAID ESTER TO A PRODUCT MIXTURE OF PREDOMINANTLY C7-C18 PARA-ACYLPHENOL, AND RECOVERING SAID PAR-ACYLPHENOL FROM SAID PRODUCT MIXTURE.
References Cited (Backward Citations)
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US2345006A
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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) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |