US3740373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy resin composition containing a polyoxyalkylenepolyamine,substituted piperazine,salicylic acid and a phenol
Assignee: Texaco Inc
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Filing: 1971-07-28
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Granted: 1973-06-19
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Expires: 1991-07-28
Abstract
Abstract A SELF-CURABLE EPOXY RESIN COMPOSITION IS PROVIDED THAT CONTAINS A POLYEPOXIDE RESIN AND AN ACCELERATOR-HARDENER COMPOSITION CONTAINING A POLYOXYALKYLENEPOLYAMINE, N(3-AMINOPROPYL) PIPERAZINE, SALICYLIC ACID AND A PHENOL ADDITIVE. USE OFTHE ACCELERATOR-HARDENER COMPOSITON PROVIDES UNEXPECTEDLY RAPID CURES OF EPOXY RESIN, EVEN AT LOW TEMPERATURE, AND EPOXY RESINS CURED WITH THE ACCELERATOR-HARDENER COMPOSITION DEMONSTRATE EXCEPTIONAL PROPERTIES.
Inventors
- 👤 F Bentley
- 👤 N Godfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:54
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/681; 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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |