Patent US3597495A successfully refreshed from Google Patents.
US3597495A
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Thermosetting coatings comprising hydroxy-functional polyurethane interpolymers
Assignee: DeSoto Inc
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Filing: 1968-07-01
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Granted: 1971-08-03
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Expires: 1988-07-01
Abstract
Abstract THERMOSETTING SOLUTION COATINGS ARE PROVIDED BY PROVIDING IN ORGANIC SOLVENT MEDIUM AN HYDROXY-FUNCTIONAL POLYURETHANE RESIN IN ADMIXTURE WITH A HEAT-HARDENING AMINOPLAST RESIN. THE POLYURETHANE RESIN IS TYPICALLY FORMED BY REACTING AN UNSATURATED HYDROXY-FUNCTIONAL POLYESTER RESIN WITH A SMALL PROPORTION OF ORGANIC DIISOCYANATE WITH THE HYDROXY-FUNCTIONALITY BEING IN EXCESS IN ORDER TO PROVIDE AN HYDROXY-FUNCTIONAL POLYURETHANE. THIS POLYURETHANE IS THEN COPOLYMERIZED WITH A SMALL PROPORTION OF LIPOPHILIC MONOETHYLENICALLY UNSATURATED MONOMER. THE COATINGS COMBINE UNUSUAL HARDNESS WITH UNUSUAL FLEXIBILITY.
Inventors
- 👤 Kazys Sekmakas
- 👤 Joseph E Gaske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:06
CPC Classifications
C; C09; C09D; C09D175/00; C09D175/04; C09D175/06; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/63; C08G18/635; C08G18/67; C08G18/68; C08G18/83; C08G18/837; C08G63/00; C08G63/68; C08G63/695; C08G63/6954; C08G77/00; C08G77/42; C08G77/445; C08G77/452; C08G77/458; C08L; C08L67/00; C08L67/06; C08L75/00; C08L75/04; C08L75/14; C09D161/00; C09D161/20; C09D167/00; C09D175/14; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31594; Y10T428/31605
Claims Analysis
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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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |