Patent US1755037A successfully refreshed from Google Patents.
Patent US3173897A successfully refreshed from Google Patents.
US3173897A
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US
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Process of reacting a polyisocyanate with a compound having active hydrogen using a tertiary amine n-oxide and hydrogen peroxide catalyst mixture
Assignee: EIDP Inc
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Filing: 1960-10-21
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Granted: 1965-03-16
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Expires: 1980-10-21
Abstract
No abstract record available.
Inventors
- 👤 Rowland K Adams
- 👤 John R Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:40
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C07; C07C; C07C291/00; C07C291/02; C07C291/04; C08G18/161; C08G18/166
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN THE PROCESS OF REACTING AN ORGANIC POLYISOCYANATE COMPOUND WITH A MATERIAL SELECTED FROM THE GROUP CONSISTING OF WATER AND A MIXTURE OF WATER WITH AN ORGANIC COMPOUND HAVING AT LEAST ONE ALCOHOLIC HYDROXYL GROUP AS ITS SOLE ISOCYANATE REACTABLE FUNCTIONALITY, THE IMPROVEMENT COMPRISING CARRYING OUT THE REACTION IN CONTACT WITH A CATALYTIC AMOUNT OF A CATALYST CONSISTING OF AQUEOUS HYDROGEN PEROXIDE AND A TERTIARY AMINE N-OXIDE HAVING NO ISOCYANATE-REACTABLE SUBSTITUENTS SAID AMINE N-OXIDE BEING SELECTED FROMA THE GROUP CONSISTING OF TERTIARY AMINE N-OXIDES HAVING ONLY ALIPHATIC CARBON ATOMS ADJACENTLY ATTACHED TO THE NITROGEN ATOMS THEREOF AND N-OXIDES OF ORGANIC COMPOUNDS HAVING A PYRIDINE NUCLEUS.
Claim 2
Dependent Claim
105 words
IN THE PROCESS OF REACTING AN ORGANIC POLYISOCYANATE COMPOUND WITH A MATERIAL SELECTED FROM THE GROUP CONSISTING OF WATER AND A MIXTURE OF WATER WITH AN ORGANIC COMPOUND HAVING AT LEAST ONE ALCOHOLIC HYDROXYL GROUP AS ITS SOLE ISOCYANATE REACTABLE FUNCTIONALITY, THE IMPROVEMENT COMPRISING CARRYING OUT THE REACTION IN CONTACT WITH A CATALYTIC AMOUNT OF A CATALYST CONSISTING OF AQUEOUS HYDROGEN PEROXIDE AND A TERTIARY AMINE N-OXIDE HAVING NO ISOCYANATE-REACTABLE SUBSTITUENTS SAID AMINE N-OXIDE BEING SELECTED FROMA THE GROUP CONSISTING OF TERTIARY AMINE N-OXIDES HAVING ONLY ALIPHATIC CARBON ATOMS ADJACENTLY ATTACHED TO THE NITROGEN ATOMS THEREOF AND N-OXIDES OF ORGANIC COMPOUNDS HAVING A PYRIDINE NUCLEUS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |