Patent US2910490A successfully refreshed from Google Patents.
US2910490A
Expired / Lapsed
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Process for preparing glycol monoesters of organic carboxylic acids
Assignee: Jefferson Chemical Co Inc
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Filing: 1956-10-16
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Granted: 1959-10-27
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Expires: 1976-10-16
Abstract
No abstract record available.
Inventors
- 👤 Malkemus John David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:02
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/02; C07C69/22; C07C69/28; C07C69/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN A METHOD FOR THE PREPARATION OF A GLYCOL MONOESTER OF AN ORGANIC CARBOXYLIC ACID WHEREIN AN ORGANIC CARBOXYLIC ACID HAVING FROM 6 TO ABOUT 24 CARBON ATOMS IS REACTED WITH AN ALKYLENE OXIDE AT A TEMPERATURE IN THE RANGE FROM ABOUT 75*C. TO ABOUT 175*C., THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID REACTION IN THE PRESENCE OF AN AMMONIUM HALIDE CATALYST SAID HALIDE BEING SELECTED FROM THE GROUP CONSISTING OF CHLORIDE, BROMIDE AND IODIDE.
Claim 2
Dependent Claim
74 words
IN A METHOD FOR THE PREPARATION OF A GLYCOL MONOESTER OF AN ORGANIC CARBOXYLIC ACID WHEREIN AN ORGANIC CARBOXYLIC ACID HAVING FROM 6 TO ABOUT 24 CARBON ATOMS IS REACTED WITH AN ALKYLENE OXIDE AT A TEMPERATURE IN THE RANGE FROM ABOUT 75*C. TO ABOUT 175*C., THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID REACTION IN THE PRESENCE OF AN AMMONIUM HALIDE CATALYST SAID HALIDE BEING SELECTED FROM THE GROUP CONSISTING OF CHLORIDE, BROMIDE AND IODIDE.
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) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |