US3833525A
Expired / Lapsed
US
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Phenolic blocked isocyanate compositions containing a heterocyclic nitrogen catalyst
Assignee: Vulkor Inc
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Filing: 1973-06-20
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Granted: 1974-09-03
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Expires: 1993-06-20
Abstract
Abstract ONE PACKAGE POURABLE POLYURETHANE COMPOSITIONS CONVERTIBLE TO THE NON-POURABLE STATE AT TEMPERATURES ABOVE 70*C. ARE PROVIDED, UTILIZING A POLYFUNCTIONAL ARYLURETHANE, A HYDROXY CONTAINING ORGANIC POLUMER AND A NITROGEN CONTAINING HETEROCYCLIC CATALYST, SUCH AS IMIDAZOLE, THE POLYURETHANE COMPOSITIONS ARE USEFUL AS WIRE ENAMELS, COATING COMPOSITIONS, ETC., AND CAN BE CONVERTED TO FOAMS. A WIRE COATING METHOD IS ALSO PROVIDED.
Inventors
- 👤 C Orlando
- 👤 C Emerick
- 👤 R Jerussi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:40
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/20; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/20; C08G18/2009; C08G18/70; C08G18/72; C08G18/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |