US2698308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxide esters
Assignee: Celanese Coatings Co
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Filing: 1950-12-04
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Granted: 1954-12-28
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Expires: 1970-12-04
Abstract
No abstract record available.
Inventors
- 👤 Samuel B Crecelius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:55
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1455
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
THE PROCESS OF PRODUCING ORGANIC CARBOXYLIC ACID ESTERS OF RESINOUS EPOXIDE ALCOHOL WHICH COMPRISES HEATING TO AN ALCOHOLSIS TEMPERATURE RESINOUS EPOXIDE ALCOHOLS WHICH ARE POLYETHER DERIVATIVES OF DIHYDRIC PHENOLS HAVING ALTERNATING ALIPHATIC GROUPS AND AROMATIC NUCLEI UNITED THROUGH ETHER OXYGEN, INCLUDING INTERMEDIATE ALCOHOLIC HYDROXYL-CONTAINING AND TERMINAL EPOXIDE-CONTAINING ALIPHATIC GROUPS, WITH ORGANIC CARBOXYLIC ACID ESTERS OF READILY VALATILE MONOHYDRIC ALCOHOLS UNDERR A HIGH VACUUM WITH VOLATILIZATION AND REMOVAL OF THE MONOHYDRIC ALCOHOL IN THE PRESENCE OF A SMALL AMOUNT OF AN ALKALINE ALCOHOLYSIS CATALYST, WHEREBY SELECTIVE ESTERIFICATION IS EFFECTED OF HYDROXYL GROUPS OF THE RESINOUS EPOXY ALCOHOL TO PRODUCE ESTERS CONTAINING EPOXIDE GROUPS.
Claim 2
Dependent Claim
102 words
THE PROCESS OF PRODUCING ORGANIC CARBOXYLIC ACID ESTERS OF RESINOUS EPOXIDE ALCOHOL WHICH COMPRISES HEATING TO AN ALCOHOLSIS TEMPERATURE RESINOUS EPOXIDE ALCOHOLS WHICH ARE POLYETHER DERIVATIVES OF DIHYDRIC PHENOLS HAVING ALTERNATING ALIPHATIC GROUPS AND AROMATIC NUCLEI UNITED THROUGH ETHER OXYGEN, INCLUDING INTERMEDIATE ALCOHOLIC HYDROXYL-CONTAINING AND TERMINAL EPOXIDE-CONTAINING ALIPHATIC GROUPS, WITH ORGANIC CARBOXYLIC ACID ESTERS OF READILY VALATILE MONOHYDRIC ALCOHOLS UNDERR A HIGH VACUUM WITH VOLATILIZATION AND REMOVAL OF THE MONOHYDRIC ALCOHOL IN THE PRESENCE OF A SMALL AMOUNT OF AN ALKALINE ALCOHOLYSIS CATALYST, WHEREBY SELECTIVE ESTERIFICATION IS EFFECTED OF HYDROXYL GROUPS OF THE RESINOUS EPOXY ALCOHOL TO PRODUCE ESTERS CONTAINING EPOXIDE GROUPS.
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) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |