US3583943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coatings based on blocked isocyanate terminated prepolymers of isocyanurates
Assignee: Bayer AG
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Filing: 1968-09-04
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Granted: 1971-06-08
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Expires: 1988-09-04
Abstract
Abstract COATED SUBSTRATES ARE PREPARED BY A PROCESS WHICH COMPRISES TREATING A SUBSTRATE MATERIAL WITH A CURABLE COATING COMPOSITION COMPRISING (A) A KETOXIME BLOCKED ISOCYANATE TERMIANTED REACTION PRODUCT OF A POLYOL WITH AN ISOCYANURATE POLYISOCYANATE, SAID REACTION PRODUCT HAVING A MOLECULAR WEIGHT OF FROM ABOUT 8,000 TO ABOUT 15,000, (B) A TERTIARY AMINOALCOHOL HAVING AT LEAST TWO HYDROXYL GROUP, OPITIONALLY IN THE PRESENCE OF (C) AN INERT ORGANIC SOLVENT, AND HEATING THE COATED SUBSTRATE MATERIAL TO TEMPERATURES OF FROM ABOUT 80*C. TO ABOUT 200*C. TO CROSSLINK THE CURABLE COATING COMPOSITION.
Inventors
- 👤 Karl-Arnold Weber
- 👤 Hellmut Striegler
- 👤 Gerhard Berndt
- 👤 Reiner Voigt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:44
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/12; D06N3/14; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/79; C08G18/791; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |