Patent US2952702A successfully refreshed from Google Patents.
US2952702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of polyhalo aryloxy acetic acid esters
Assignee: Morton Chemical Co
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Filing: 1957-02-27
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Granted: 1960-09-13
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Expires: 1977-02-27
Abstract
No abstract record available.
Inventors
- 👤 Galat Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:01
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/66; C07C69/67; C07C69/708; C07C69/712
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A PROCESS OF PREPARING 2,4,5-TRICHLOROPHENOXY LOWER FATTY ACID ESTERS, COMPRISING FORMING A MIXTURE OF AN ALKALI METAL HYDROXIDE, A POLYHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL AND PROPYLENE GLYCOL AND AN ENTRANING AGENT, SAID ENTRAINING AGENT BEING UNREACTIVE WITH THE COMPONENTS OF SAID MIXTURE, HEATING SAID MIXTURE WITH REMOVAL OF ENTRAINING AGENT AND WATER ENTRAINED THEREBY, ADDING 1,2,4,5-TETRACHLOROBENZENE TO THE RESULTING ANHYDROUS MIXTURE, THE WEIGHT OF POLYHYDRIC ALCOHOL IN THE MIXTURE SO FORMED BEING FORM 0.5 TO 1.25 TIMES THE WEIGHT OF 1,2,4,5-TETRACHLOROBENZENE THEREIN, CONTINUING HEATING FOR A TIME SUFFICIENT TO HYDROLYZE A CHLORINE ATOM OF SAID 1,2,4,5-TETRACHLOROBENZENE, ADDING AN ESTER OF A CHLORO-LOWER FATTY ACID TO THE RESULTING REACTION PRODUCT AND CONTINUING HEATING UNTIL CONDENSATION IS AT LEAST ESSENTIALLY COMPLETE.
Claim 2
Dependent Claim
124 words
A PROCESS OF PREPARING 2,4,5-TRICHLOROPHENOXY LOWER FATTY ACID ESTERS, COMPRISING FORMING A MIXTURE OF AN ALKALI METAL HYDROXIDE, A POLYHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL AND PROPYLENE GLYCOL AND AN ENTRANING AGENT, SAID ENTRAINING AGENT BEING UNREACTIVE WITH THE COMPONENTS OF SAID MIXTURE, HEATING SAID MIXTURE WITH REMOVAL OF ENTRAINING AGENT AND WATER ENTRAINED THEREBY, ADDING 1,2,4,5-TETRACHLOROBENZENE TO THE RESULTING ANHYDROUS MIXTURE, THE WEIGHT OF POLYHYDRIC ALCOHOL IN THE MIXTURE SO FORMED BEING FORM 0.5 TO 1.25 TIMES THE WEIGHT OF 1,2,4,5-TETRACHLOROBENZENE THEREIN, CONTINUING HEATING FOR A TIME SUFFICIENT TO HYDROLYZE A CHLORINE ATOM OF SAID 1,2,4,5-TETRACHLOROBENZENE, ADDING AN ESTER OF A CHLORO-LOWER FATTY ACID TO THE RESULTING REACTION PRODUCT AND CONTINUING HEATING UNTIL CONDENSATION IS AT LEAST ESSENTIALLY COMPLETE.
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) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |