US2731444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxide resin cured with a polyhydric aliphatic alcohol
Assignee: Celanese Coatings Co
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Filing: 1952-10-21
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Granted: 1956-01-17
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Expires: 1972-10-21
Abstract
No abstract record available.
Inventors
- 👤 Greenlee Sylvan Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:06
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
AN EPOXIDE RESIN COMPOSITION COMPRISING AN EPOXIDE RESIN WHICH IS A POLYETHER DERIVATIVE OF A DIHYDRIC PHENOL HAVING TERMINAL EPOXIDE GROUPS AND FREE FROM REACTIVE GROUPS OTHER THAN EPOXIDE ALIPHATIC HYDROXYL GROUPS AND A POLYHYDRIC ALIPHATIC ALCOHOL CONTAINING ONLY CARBON, HYDROGEN AND OXYGEN AND SELECTED FROM THE GROUP WHICH CONSISTS OF ALIPHATIC HYDROCARBONS SUBSTITUTED ONLY BY HYDROXYL GROUPS, POLYGLYCOLS, POLYGLYCEROLS AND POLYPENTAERYTHRITOLS FREE FROM OXYGEN CONTAINING GROUPS OTHER THAN ETHER OXYGEN AND HYDROXYL GROUPS AND SAID POLYHYDRIC ALCOHOL HAVING AT LEAST TWO PRIMARY HYDROXYL GROUPS AS A CROSS-LINKING REACTANT FOR THE EPOXIDE RESIN, THE PROPORTIONS OF EPOXIDE RESIN AND POLYHYDRIC ALCOHOL BEING SUCH THAT THE EPOXIDE GROUPS OF THE RESIN ARE AT LEAST EQUAL TO THE PRIMARY ALCOHOLIC GROUPS OF THE ALCOHOL.
Claim 2
Dependent Claim
122 words
AN EPOXIDE RESIN COMPOSITION COMPRISING AN EPOXIDE RESIN WHICH IS A POLYETHER DERIVATIVE OF A DIHYDRIC PHENOL HAVING TERMINAL EPOXIDE GROUPS AND FREE FROM REACTIVE GROUPS OTHER THAN EPOXIDE ALIPHATIC HYDROXYL GROUPS AND A POLYHYDRIC ALIPHATIC ALCOHOL CONTAINING ONLY CARBON, HYDROGEN AND OXYGEN AND SELECTED FROM THE GROUP WHICH CONSISTS OF ALIPHATIC HYDROCARBONS SUBSTITUTED ONLY BY HYDROXYL GROUPS, POLYGLYCOLS, POLYGLYCEROLS AND POLYPENTAERYTHRITOLS FREE FROM OXYGEN CONTAINING GROUPS OTHER THAN ETHER OXYGEN AND HYDROXYL GROUPS AND SAID POLYHYDRIC ALCOHOL HAVING AT LEAST TWO PRIMARY HYDROXYL GROUPS AS A CROSS-LINKING REACTANT FOR THE EPOXIDE RESIN, THE PROPORTIONS OF EPOXIDE RESIN AND POLYHYDRIC ALCOHOL BEING SUCH THAT THE EPOXIDE GROUPS OF THE RESIN ARE AT LEAST EQUAL TO THE PRIMARY ALCOHOLIC GROUPS OF THE ALCOHOL.
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) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |