Patent US3789044A successfully refreshed from Google Patents.
US3789044A
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Novel cured compositions prepared from the reaction of a polyisocyanate and a hydroxybenzoic acid capped epoxide-containing material
Assignee: Ashland LLC
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Filing: 1971-01-26
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Granted: 1974-01-29
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Expires: 1991-01-26
Abstract
Abstract A NOVEL COMPOSITION IS PREPARED BY COMBINING A POLYISOCYANATE AND A HYDROXYBENZOIC ACID CAPPED EPOXIDECONTAINING MATERIAL. THIS COMBINATION OF INGREDIENTS CAN BE RAPIDLY CURED AT ROOM TEMPERATURE TO ESSENTIALLY ITS ULTIMATE STATE OF USE BY CONTACTING THE COMBINATION WITH A TERTIARY AMINE TO YIELD A DURABLE, FLEXIBLE, AND CAUSTIC RESISTANT MATERIAL.
Inventors
- 👤 D Taft
- 👤 R Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:42
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/625; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/30; C08G18/32; C08G18/3203; C08G18/3221; C08G18/40; C08G18/42; C08G18/4266; C08G18/4283; C08G18/58; C08G18/581; C08G18/62; C08G18/6216; C08G18/622; C08G18/6237; C08G18/64; C08G18/6407; C08G59/4007; C08G59/4014; C08G59/4028
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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |