US3813352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxide resin mixtures
Assignee: Novartis Corp
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Filing: 1972-12-26
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Granted: 1974-05-28
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Expires: 1992-12-26
Abstract
Abstract NEW EPOXIDE RESIN MIXTURE WHICH CONTAIN A MAJOR PROPORTION OF HIGHER MOLECULAR WEIGHT N,N''-DIGLYCIDYL COMPOUNDS OF OXALKYLATED CYCLIC UREIDE DERIVATIVES ARE OBTAINED BY REACTING 1 MOLE OF AN OXYLATED ACYCLIC UREIDE, SUCH AS 3 - (2'' - HYDROXY - N - PROPYL)-5,5-DIMETHYL HYDANTION, WITH 1.2 TO 3.0 MOLES OF EPIHALOGENOHYDRIN IS KNOWN MANNER. THE NEW EXPOXIDE RESIN MIXTURES ARE SUITABLE FOR THE MANUFACTURE OF MOULDED ARTICLES AND COATINGS WITH GOOD MECHANICAL PROPERTIES AND, IN COMPARISON WITH THE LOW MOLECULAR N,N''-DIGLYCIDYL COMPOUNDS OF OXALKYLATED CYCLIC UREIDES, POSSESS THE ADVANTAGE THAT A SLIGHTER EXOTHERMICITY OCCURS ON GELLING AND A SLIGHTER SHRINKAGE DURING CURING.
Inventors
- 👤 J Habermeier
- 👤 D Porret
- 👤 D Baumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:11
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |