Patent US3785997A successfully refreshed from Google Patents.
US3785997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamine and hydrocarbon sulfonic acid accelerator combination for epoxy curing
Assignee: Texaco Inc
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Filing: 1972-01-24
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Granted: 1974-01-15
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Expires: 1992-01-24
Abstract
Abstract AN ACCELERATOR COMBINATION OF A POLYAMINE SUCH AS A POLYALKYLENEPOLYAMINE OR AN N-(AMINOALKYL PIPERAZINE AND A HYDROCARBON SULFONIC ACID IS SYNERGISTIC FOR ACCELERATING THE CURE OF A POLYGLYCIDYL ETHER OF A POLYHYDRIC PHENOL CURED WITH A POLYOXYPROPYLENEPOLYAMINE. THE EPOXY RESIN PRODUCT IS USEFUL IN CASTINGS, COATINGS, ADHESIVES, LAMINATES, FILAMENT-REINFORCED COMPOSITIONS, SEAMLESS FLOORING, TERRAZZO FLOORING, CRUSHED-STONE AGGREGATES AND IN GROUTING, CAULKING AND SEALING COMPOSITIONS.
Inventors
- 👤 N Godfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:52
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/687; 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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |