US2528359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyepoxide-containing compositions and reaction products
Assignee: Celanese Coatings Co
•
Filing: 1946-04-10
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Granted: 1950-10-31
•
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 16:12
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/20; C08L61/32; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE METHOD OF PRODUCING A COMPLEX REACTION PRODUCT USEFUL IN THE PLASTIC ARTS WHICH COMPRISES ADMIXING A FUSIBLE ALKYLATED CONDENSATE OF AN ALDEHYDE WITH AN ORGANIC AMMONIA DERIVATIVE SELECTED FROM THE GROUP WHICH CONSISTS OF UREAS AND MELAMINE AND CONTAINING REACTIVE HYDROGEN WITH A SUBSTANTIAL PROPORTION OF A LIQUID ALIPHATIC POLYEPOXIDE FREE FROM REACTIVE FUNCTIONAL GROUPS OTHER THAN EPOXY AND HYDROXYL GROUPS AND HEATING THE SAME TO FORM A COMPLEX REACTION PRODUCT.
Claim 2
Independent Claim
72 words
THE METHOD OF PRODUCING A COMPLEX REACTION PRODUCT USEFUL IN THE PLASTIC ARTS WHICH COMPRISES ADMIXING A FUSIBLE ALKYLATED CONDENSATE OF AN ALDEHYDE WITH AN ORGANIC AMMONIA DERIVATIVE SELECTED FROM THE GROUP WHICH CONSISTS OF UREAS AND MELAMINE AND CONTAINING REACTIVE HYDROGEN WITH A SUBSTANTIAL PROPORTION OF A LIQUID ALIPHATIC POLYEPOXIDE FREE FROM REACTIVE FUNCTIONAL GROUPS OTHER THAN EPOXY AND HYDROXYL GROUPS AND HEATING THE SAME TO FORM A COMPLEX REACTION 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) | 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 |