US2947725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyepoxides, etc.
Assignee: Celanese Coatings Co
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Filing: 1957-05-02
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Granted: 1960-08-02
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Expires: 1977-05-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold G Cooke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:07
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THE METHOD OF PRODUCING HIGH MOLECULAR WEIGHT, SOLUBLE, FUSIBLE POLYEPOXIDES WHICH COMPRISES REACTING WITH HEAT, IN ADMIXTURE WITH AN ORGANIC BASE AS A CATALYST, A DIEPOXIDE SELECTED FROM THE GROUP CONSISTING OF DIGLYCIDYL ETHERS OF POLYHYDRIC PHENOLS AND DIGLYCIDYL ETHERS OF POLYHYDRIC ALCOHOLS AND CYANURIC ACID IN SUCH PROPORTIONS THAT THERE ARE FROM ABOUT 1.5 TO 2 EPOXIDE GROUPS OF THE DIEPOXIDE FOR EACH OF THE HYDROXYL GROUPS OF THE CYANURIC ACID, THE AMOUNT OF THE HEAT SUPPLIED TO THE REACTION MASS BEING INSUFFICIENT TO RENDER THE REACTION PRODUCT INSOLUBLE AND INFUSIBLE.
Claim 2
Independent Claim
92 words
THE METHOD OF PRODUCING HIGH MOLECULAR WEIGHT, SOLUBLE, FUSIBLE POLYEPOXIDES WHICH COMPRISES REACTING WITH HEAT, IN ADMIXTURE WITH AN ORGANIC BASE AS A CATALYST, A DIEPOXIDE SELECTED FROM THE GROUP CONSISTING OF DIGLYCIDYL ETHERS OF POLYHYDRIC PHENOLS AND DIGLYCIDYL ETHERS OF POLYHYDRIC ALCOHOLS AND CYANURIC ACID IN SUCH PROPORTIONS THAT THERE ARE FROM ABOUT 1.5 TO 2 EPOXIDE GROUPS OF THE DIEPOXIDE FOR EACH OF THE HYDROXYL GROUPS OF THE CYANURIC ACID, THE AMOUNT OF THE HEAT SUPPLIED TO THE REACTION MASS BEING INSUFFICIENT TO RENDER THE REACTION PRODUCT INSOLUBLE AND INFUSIBLE.
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) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |