US2528360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxide resin compositions
Assignee: Celanese Coatings Co
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Filing: 1946-04-10
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Granted: 1950-10-31
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Expires: 1966-04-10
Abstract
No abstract record available.
Inventors
- 👤 Greenlee Sylvan Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:40
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/20; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THE METHOD OF PRODUCING A COMPLEX REACTION PRODUCT WHICH COMPRISES HEATING SUBSTANTIAL AMOUNTS OF A FUSIBLE RESINUOUS CONDENSATE OF AN ALDEHYDE WITH AN ORGANIC AMMONIA DERIVATIVE CONTAINING REACTIVE HYDROGEN AND SELECTED FROM THE CLASS WHICH CONSISTS OF AMINES AND AMIDES WITH A COMPLEX EPOXIDE WHICH IS A POLYETHER DERIVATIVE OF A POLYHYDRIC PHENOL CONTAINING EPOXIDE GROUPS AND FREE FROM FUNCTIONAL GROUPS OTHER THAN EPOXIDE AND HYDROXYL GROUPS, THE PROPORTIONS BEING WITHIN THE RANGE OF FROM ABOUT EQUAL PROPORTION BY WEIGHT OF COMPLEX EPOXIDE AND ALDEHYDE CONDENSATE TO ABOUT 9 PARTS OF COMPLEX EPOXIDE TO 1 OF ALDEHYDE CONDENSATE.
Claim 2
Independent Claim
98 words
THE METHOD OF PRODUCING A COMPLEX REACTION PRODUCT WHICH COMPRISES HEATING SUBSTANTIAL AMOUNTS OF A FUSIBLE RESINUOUS CONDENSATE OF AN ALDEHYDE WITH AN ORGANIC AMMONIA DERIVATIVE CONTAINING REACTIVE HYDROGEN AND SELECTED FROM THE CLASS WHICH CONSISTS OF AMINES AND AMIDES WITH A COMPLEX EPOXIDE WHICH IS A POLYETHER DERIVATIVE OF A POLYHYDRIC PHENOL CONTAINING EPOXIDE GROUPS AND FREE FROM FUNCTIONAL GROUPS OTHER THAN EPOXIDE AND HYDROXYL GROUPS, THE PROPORTIONS BEING WITHIN THE RANGE OF FROM ABOUT EQUAL PROPORTION BY WEIGHT OF COMPLEX EPOXIDE AND ALDEHYDE CONDENSATE TO ABOUT 9 PARTS OF COMPLEX EPOXIDE TO 1 OF ALDEHYDE CONDENSATE.
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) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |