US3720634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic hexafluorophosphates,arsenates or antimonates as accelerators for curing epoxy resins
Assignee: Atlantic Richfield Co
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Filing: 1971-01-19
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Granted: 1973-03-13
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Expires: 1991-01-19
Abstract
Abstract A PROCESS FOR PREPARING CURABLE THERMOSET RESINS FROM POPYEPOXIDES AND ORGANIC ANHYDRIDES WITH OR WITHOUT POLYOLS IN THE PRESENCE OF ORGANIC HEXAFLUOROPHOSPHATES, HEXAFLUOROARSENATES OR HEXAFLUOROANTIMONATES WHICH SERVE AS ACCELERATORS RESULTING IN SHORTER GEL TIMES WITH MORE THOROUGH CURE AT LOWER TEMPERATURES THAN OBTAINED WITH PRESENTLY RECOGNIZED ACCELERATORS.
Inventors
- 👤 G Statton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:12
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/40; C08G59/42; C08G59/688
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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |