US3793271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accelerator combination for epoxy curing
Assignee: Texaco Inc
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Filing: 1971-07-28
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Granted: 1974-02-19
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Expires: 1991-07-28
Abstract
Abstract USE OF AN ACCELERATOR-HARDENER COMPOSITION CONTAINING SALICYLIC ACID, N-(3-AMINOPROPYL)PIPERAZINE AND A POLYAMIDE PROVIDES, A SYNERGISTIC CURING EFFECT FOR SETTING POLYEPOXIDE RESINS. THE ACCELERATOR-HARDENER COMPOSITION PROVIDES UNEXPECTEDLY RAPID LOW TEMPERATURE CURING. SOLVENTLESS COATINGS OF AN EPOXY RESIN CURED WITH OUR ACCELERATOR-HARDENER COMPOSITION ARE SMOOTHER, GLOSSIER AND FREER FROM BLUSH THAN COATINGS PREPARED WITHOUT THE ACCELERATOR-HARDENER COMPOSITION.
Inventors
- 👤 N Godfrey
- 👤 F Bentley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:39
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/686; C08L; C08L63/00
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) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |