US3714121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arylamine-modified phenolic resole resins
Assignee: Dow Chemical Co
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Filing: 1971-04-29
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Granted: 1973-01-30
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Expires: 1991-04-29
Abstract
Abstract PHENOL-ALDEHYDR RESINS ARE MODIFIED BY REACTION WITH ANILINE OR A SUBSTITUTE ANILINE AND A DIFUNCTIONAL ARYLAMINE SUCH AS M-HYDROXYANILINE IN SPECIFIED PROPORTIONS. THE RESINOUS PRODUCTS COMBINED FAST CURING WITH GOOD PHYSICAL PROPERTIES AS WOOD ADHESIVES. CURE TIME OF THE RESINS CONVENIENTLY ADJUSTED BY VARYING THE PROPORTIONS OF FORMALDEHYDE AND POLYEPOXIDE IN A MIXED CURING AGENT COMPOSITION.
Inventors
- 👤 E Kobel
- 👤 H Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:18
CPC Classifications
C; C08; C08G; C08G14/00; C08G14/02; C08G14/04; C08G14/06; 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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |