US2865886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyethylene polyamine-epoxide compositions
Assignee: Celanese Coatings Co
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Filing: 1952-02-11
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Granted: 1958-12-23
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Expires: 1972-02-11
Abstract
No abstract record available.
Inventors
- 👤 Greenlee Sylvan Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:30
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5006; C08G59/502
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
THE METHOD OF MAKING INSOLUBLE, INFUSIBLE MOLDED PRODUCTS WHICH COMPRISES ADMIXING NORMALLY SOLID COMPLEX RESINOUS EXPOXIDES AND POLYFUNCTIONAL POLYETHYLENE POLYAMINES TO FORM A MOLDING MIXTURE, THE COMPLEX RESINOUS EPOXIDES BEING POLYMERIC POLYETHERS OF DIHYDRIC PHENOLS, SAID DIHYDRIC PHENOLS BEING FREE FROM FUNCTIONAL GROUPS OTHER THAN PHENOLIC HYDROXYL GROUPS, SAID RESINOUS EPOXIDES RESULTING FROM THE HEATING OF THE DIHYDRIC PHENOL WITH AN EXCESS OF EPICHLORHYDRIN AND OF CAUSTIC ALKALI AND HAVING INTERMEDIATE ALCOHOLIC HYDROXYL-CONTAINING ALIPHALIC GROUPS AND EPOXIDE-CONTAINNG TERMINAL ALIPHATIC GROUPS, SAID RESINOUS EPOXIDES BEING FREE FROM FUNCTIONAL GROUPS OTHER THAN ALCOHOLIC HYDROXYL AND EPOXIDE GROUPS, AND THE AMOUNT OF POLYFUNCTIONAL POLYAMINE BEING FROM ABOUT 1/4 TO ABOUT 1.7 OF THE AMOUNT EQUIVALENT TO THE RESINOUS EPOXIDE, CONSIDERING ONE ACTIVE HYDROGEN OF THE AMINE GROUPS OF THE POLYAMINE EQUIVALENT TO ONE EPOXIDE GROUP OF THE COMPLEX EPOXIDE, INTRODUCING A BODY OF SAID MIXTURE IN THE SUBSTANTIAL ABSENCE OF A SOLVENT INTO A CONFINING SPACE, AND HEATING SAID MIXTURE IN SAID CONFINING SPACE TO FORM A INSOLUBLE, INFUSBILE PRODUCT.
Claim 2
Independent Claim
167 words
THE METHOD OF MAKING INSOLUBLE, INFUSIBLE MOLDED PRODUCTS WHICH COMPRISES ADMIXING NORMALLY SOLID COMPLEX RESINOUS EXPOXIDES AND POLYFUNCTIONAL POLYETHYLENE POLYAMINES TO FORM A MOLDING MIXTURE, THE COMPLEX RESINOUS EPOXIDES BEING POLYMERIC POLYETHERS OF DIHYDRIC PHENOLS, SAID DIHYDRIC PHENOLS BEING FREE FROM FUNCTIONAL GROUPS OTHER THAN PHENOLIC HYDROXYL GROUPS, SAID RESINOUS EPOXIDES RESULTING FROM THE HEATING OF THE DIHYDRIC PHENOL WITH AN EXCESS OF EPICHLORHYDRIN AND OF CAUSTIC ALKALI AND HAVING INTERMEDIATE ALCOHOLIC HYDROXYL-CONTAINING ALIPHALIC GROUPS AND EPOXIDE-CONTAINNG TERMINAL ALIPHATIC GROUPS, SAID RESINOUS EPOXIDES BEING FREE FROM FUNCTIONAL GROUPS OTHER THAN ALCOHOLIC HYDROXYL AND EPOXIDE GROUPS, AND THE AMOUNT OF POLYFUNCTIONAL POLYAMINE BEING FROM ABOUT 1/4 TO ABOUT 1.7 OF THE AMOUNT EQUIVALENT TO THE RESINOUS EPOXIDE, CONSIDERING ONE ACTIVE HYDROGEN OF THE AMINE GROUPS OF THE POLYAMINE EQUIVALENT TO ONE EPOXIDE GROUP OF THE COMPLEX EPOXIDE, INTRODUCING A BODY OF SAID MIXTURE IN THE SUBSTANTIAL ABSENCE OF A SOLVENT INTO A CONFINING SPACE, AND HEATING SAID MIXTURE IN SAID CONFINING SPACE TO FORM A INSOLUBLE, INFUSBILE PRODUCT.
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) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |