US3591547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urethane coating compositions based on polyols prepared from fluorinated glycidyl ethers
Assignee: Olin Corp
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Filing: 1968-04-12
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Granted: 1971-07-06
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Expires: 1988-04-12
Abstract
Abstract ISOCYANATE-TERMINATED PREPOLYMERS ARE PREPARED BY REACTING A POLYETHER POLYOL PREPARED FROM A FLUORINATED GLYCIDYL ETHER, A POLYFUNCTIONAL INITIATOR, AND PREFERABLY AN ALKYLENE OXIDE, WITH AN ORGANIC DIISOCYANATE. URETHANEFORMING COATING COMPOSITIONS CAN BE PREPARED BY ADMIXING THESE PREPOLYMERS WITH AN INERT ORGANIC SOLVENT. THE ISOCYANATE-TERMINATED PREPOLYMERS AND URETHANE-FORMING COATING COMPOSITIONS ARE CURED TO PROVIDE URETHANE COATINGS HAVING SUPERIOR CHEMICAL AND MECHANICAL PROPERTIES.
Inventors
- 👤 Max M Boudakian
- 👤 Maurice C Raes
- 👤 Venkataramaraj S Urs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:16
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5003; C08G18/5015
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |