Patent US3810871A successfully refreshed from Google Patents.
US3810871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane coating composition suitable for use in low temperature environments
Assignee: Atlantic Richfield Co
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Filing: 1972-11-03
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Granted: 1974-05-14
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Expires: 1992-11-03
Abstract
Abstract A POLYURETHANE COATING COMPOSITON SUITABLE FOR COATING METALS EXPOSED TO LOW TEMPERATURE ENVIRONMENTS HAVING HIGH ADHESION, FLEXIBILITY, IMPACT STRENGTH, ABRASION RESISTANCE, TENSILE STRENGHT AND TEAR RESISTANCE, TOGETHER WITH CORROSION PREVENTION PROPERTIES COMPRISING THE REACTION PRODUCTION OF A POLYARYL POLYISOCYANATE WITH A MIXTURE OF POLYHYDROXYL POLYDIENE, ALLYL ETHERS OF METHYLOLSUBSTITUTED PHENOLS AND N,N''-DI(HYDROXYISOPROPYL)ANILINE HAVING INCORPORATED THEREIN A SUSPENSING AGENT FOR THE ALLYL ETHERS OF THE METHYLOL-SUBSTITUTED PHENOLS. THE PREFERRED SUSPENDING AGENT IS CARBON BLACK SINCE IT ALSO ACTS AS A REINFORCING AGENT.
Inventors
- 👤 J Miron
- 👤 A Borchert
- 👤 F Goff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:39
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3271; C08G18/329; C08G18/65; C08G18/6576; C08G18/6582; C08G18/6594; C08G18/67; C08G18/675
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) | 1977-05-13 | 1977-11-12 | 1978-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-13 | 1981-11-12 | 1982-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-13 | 1985-11-12 | 1986-05-14 | $7700.00 | Window Closed / Lapsed |