US2769833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of phenoxy acid esters through the potassium phenolate
Assignee: Diamond Shamrock Corp
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Filing: 1953-11-02
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Granted: 1956-11-06
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Expires: 1973-11-02
Abstract
No abstract record available.
Inventors
- 👤 Weil Ira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:46
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A PROCESS FOR THE PRODUCTION OF PHENOXY ACID ESTERS WHICH COMPRISES REACTING A PHENOL WITH SUBSTANTIALLY ANHYDROUS POTASSIUM HYDROXIDE THEREBY PRODUCING POTASSIUM PHENOLATE, REMOVING THE WATER PRODUCT OF REACTION, CONDENSING WITH SAID PHENOLATE UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS, AN ESTER HAVING A FUNCTIONAL GROUP REACTIVE WITH THE POTASSIUM OF THE SAID PHENOLATE, SAID GROUP BEING ATTACHED TO A CARBON ATOM OF THE ACID PORTION OF SAID ESTER, AND RECOVERING THE PHENOXY ACID ESTER SO FORMED AS THE PRODUCT OF THE REACTION.
Claim 2
Dependent Claim
80 words
A PROCESS FOR THE PRODUCTION OF PHENOXY ACID ESTERS WHICH COMPRISES REACTING A PHENOL WITH SUBSTANTIALLY ANHYDROUS POTASSIUM HYDROXIDE THEREBY PRODUCING POTASSIUM PHENOLATE, REMOVING THE WATER PRODUCT OF REACTION, CONDENSING WITH SAID PHENOLATE UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS, AN ESTER HAVING A FUNCTIONAL GROUP REACTIVE WITH THE POTASSIUM OF THE SAID PHENOLATE, SAID GROUP BEING ATTACHED TO A CARBON ATOM OF THE ACID PORTION OF SAID ESTER, AND RECOVERING THE PHENOXY ACID ESTER SO FORMED AS THE PRODUCT OF THE 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) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |