Patent US3784525A successfully refreshed from Google Patents.
US3784525A
Expired / Lapsed
US
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Long-chain diglycidyl esters
Assignee: Novartis Corp
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Filing: 1972-04-12
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Granted: 1974-01-08
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Expires: 1992-04-12
Abstract
Abstract NEW DIGLYCIDYL ESTER ARE OBTAINED BY GLYCIDYLIZING BUTADIENE-ACRYLONITRILE COPOLYMERSOR BUTADIENE POLYMERS WHICH HAVE TERMINAL CARBOXYL GROUP. THE NEW DIGLYCIDYL ESTERS CAN BE CONVERTED INTO FLEXIBLE MOULDINGS OR COATING BY CURING WITH CONVENTIONAL EPOXIDE RESIN HARDENERS, WITH THE FLEXIBILITY OF THE MOULDINGS BEING TO A RELATIVELY LARGE EXTENT INDEPENDENT OF THE TEMPERATURE AND BEING RETAINED UP TO -50*C.
Inventors
- 👤 D Baumann
- 👤 J Habermeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:44
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/36; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/16; C08G; C08G59/00; C08G59/02; C08G59/12; C08G59/18; C08G59/20; C08G59/22
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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |