US3778439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binuclear n-heterocyclic polyglycidyl compounds
Assignee: Individual
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Filing: 1971-10-28
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Granted: 1973-12-11
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Expires: 1991-10-28
Abstract
Abstract POLYGLYCIDYL COMPOUNDS ARE MANUFACTURED BY REACTING ADDUCTS OF 1 MOL OF A DIISOCYANATE AND 2 MOLS OF A HYDANTOIN OR DIHYDROURACIL, FOR EXAMPLE N, N''-BIS-(5,5DIMETHYLHYDANTOIN-1-CARBONYL)-HEXAMETHYLENEDIAMINE, WITH AN EPIHALOGENOHYDRIN OR B-METHYLEPIHALOGENOHYDRIN, FOR EXAMPLE EPICHLOROHYDRIN, IN THE PRSENCE OF A CATALYST. EXAMPLE: THE NEW COMPOUND OF THE FORMULA (OXIRANYL-CH2-(2,5-DI(O=),4,4-DI(CH3-)IMIDAZOLIDIN-1,3- YLENE)-CO-NH)2-(CH2)6 THE NEW POLYGLYCIDYL COMPOUNDS CAN BE CONVERTED, BY MEANS OF THE CUSTOMARY CURING AGENTS FOR EPOXIDE RESINS, SUCH AS DICARBOXYLIC ACIDS OR POLYAMINES, INTO MOULDINGS HAVING GOOD MECHANICAL AND DIELECTRIC PROPERTIES.
Inventors
- 👤 J Habermeier
- 👤 D Porret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:19
CPC Classifications
C; C07; C07C; C07C243/00; C07D; C07D249/00; C07D249/02; C07D249/04; C07D249/06; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/26; C09; C09K; C09K3/00; D; D06; D06L; D06L4/00; D06L4/60; Y; Y10; Y10S; Y10S525/00; Y10S525/908
Claims Analysis
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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) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |