US3142686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing epoxy esters of alpha, alpha-dialkyl monocarboxylic acids
Assignee: Shell USA Inc
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Filing: 1961-05-12
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Granted: 1964-07-28
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Expires: 1981-05-12
Abstract
No abstract record available.
Inventors
- 👤 Robert W F Kreps
- 👤 Klootwijk Arie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:27
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
IN A PROCESS FOR THE PREPARATION OF EPOXY ESTERS OF ALPHA,ALPHA-DIALKYL MONOCARBOXYLIC ACIDS, WHICH COMPRISES REACTING A SALT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND QUATERNARY AMMONIUM SALTS OF AN ALPHA,ALPHA-DIALKYL MONOCARBOXYLIC ACID CONTAINING FROM 4 TO 20 CARBON ATOMS WITH A 1-CHLORO-2,3-EPOXYALKANE CONTAINING FROM 3 TO 20 CARBON ATOMS AT A TEMPERATURE OF FROM ABOUT 50*C. TO ABOUT 180*C. AND SEPARATING THE 2,3-EPOXYALKYL ESTER OF SAID ALPHA-ALPHA-DIALKYL MONOCARBOXYLIC ACID FROM THE REACTION PRODUCTS; IN COMBINATION, THE STEPS OF THE PURIFYING SAID ESTER BY INTIMATELY MIXING AT 70-75*C. SAID ESTER WITH A MIXTURE OF A MONOHYDRIC ALCOHOL WHICH IS MISCIBLE IN WATER IN ALL PROPORTIONS AND WATER SEPARATING THE HOT WASHING AQUEOUS SOLUTION FROM THE ESTER AND REMOVING THE ALCOHOL REMAINING DISSOLVED IN THE ESTER BY DISTILLATION UNDERS REDUCED PRESSURE.
Claim 2
Dependent Claim
132 words
IN A PROCESS FOR THE PREPARATION OF EPOXY ESTERS OF ALPHA,ALPHA-DIALKYL MONOCARBOXYLIC ACIDS, WHICH COMPRISES REACTING A SALT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND QUATERNARY AMMONIUM SALTS OF AN ALPHA,ALPHA-DIALKYL MONOCARBOXYLIC ACID CONTAINING FROM 4 TO 20 CARBON ATOMS WITH A 1-CHLORO-2,3-EPOXYALKANE CONTAINING FROM 3 TO 20 CARBON ATOMS AT A TEMPERATURE OF FROM ABOUT 50*C. TO ABOUT 180*C. AND SEPARATING THE 2,3-EPOXYALKYL ESTER OF SAID ALPHA-ALPHA-DIALKYL MONOCARBOXYLIC ACID FROM THE REACTION PRODUCTS; IN COMBINATION, THE STEPS OF THE PURIFYING SAID ESTER BY INTIMATELY MIXING AT 70-75*C. SAID ESTER WITH A MIXTURE OF A MONOHYDRIC ALCOHOL WHICH IS MISCIBLE IN WATER IN ALL PROPORTIONS AND WATER SEPARATING THE HOT WASHING AQUEOUS SOLUTION FROM THE ESTER AND REMOVING THE ALCOHOL REMAINING DISSOLVED IN THE ESTER BY DISTILLATION UNDERS REDUCED PRESSURE.
References Cited (Backward Citations)
US3053855A
Cited
US2556075A
Cited
US2537981A
Cited
GB766771A
Cited
US2852521A
Cited
US2992239A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |