Patent US2877193A successfully refreshed from Google Patents.
US2877193A
Expired / Lapsed
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Stabilization of polyurethane reaction products
Assignee: EIDP Inc
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Filing: 1955-02-23
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Granted: 1959-03-10
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Expires: 1975-02-23
Abstract
No abstract record available.
Inventors
- 👤 Philip A Roussel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:09
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/30; C08G18/36; C08K; C08K5/00; C08K5/16; C08K5/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A FLUID POLYURETHANE PRODUCT CONTAINING THE REACTION PRODUCTS OF A FATTY ACID TRIGLYCERIDE HAVING A HYDROXYL NUMBER OF FROM 49 TO 180, SAID TRIGLYCERIDE BEING SELECTED FROM THE GROUP CONSISTING OF CASTOR OIL AND BLOWN DRYING OILS, AND OF AN ARYLENE DIISOCYANATE, SAID FLUID POLYURETHANE PRODUCT BEING SUBSTANTIALLY FREE OF UREA LINKAGES AND CONTAINING UNREACTED ARYLENE DIISOCYANATE AND BEING CAPABLE OF REACTING WITH WATER TO FORM A CELLULAR REACTION PRODUCT, STABILIZED AGAINST DETERIORATION UPON STORAGE AT LOW TEMPERATURES BY THE PRESENCE OF A SUBSTITUTED UREA HAVING THE FORMULA R-NHCONH-R''HNCO IN WHICH R REPRESENTS A MONOVALENT ORGANIC RADICAL WHICH IS INERT TO ISOCYANATE GROUPS, SAID RADICAL BEING SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC AND CYCLOALIPHATIC RADICALS CONTAINING AT LEAST 4 CARBON ATOMS AND R'' IS AN ARYLENE GROUP, THE AMOUNT OF THE SAID SUBSTITUTED UREA BEING EQUIVALENT TO FROM 0.05 TO 2 PARTS BY WEIGHT OF THE CORRESPONDING PRIMARY AMINE RNH2 PER HUNDRED PARTS OF POLYURETHANE PRODUCT.
Claim 2
Dependent Claim
157 words
A FLUID POLYURETHANE PRODUCT CONTAINING THE REACTION PRODUCTS OF A FATTY ACID TRIGLYCERIDE HAVING A HYDROXYL NUMBER OF FROM 49 TO 180, SAID TRIGLYCERIDE BEING SELECTED FROM THE GROUP CONSISTING OF CASTOR OIL AND BLOWN DRYING OILS, AND OF AN ARYLENE DIISOCYANATE, SAID FLUID POLYURETHANE PRODUCT BEING SUBSTANTIALLY FREE OF UREA LINKAGES AND CONTAINING UNREACTED ARYLENE DIISOCYANATE AND BEING CAPABLE OF REACTING WITH WATER TO FORM A CELLULAR REACTION PRODUCT, STABILIZED AGAINST DETERIORATION UPON STORAGE AT LOW TEMPERATURES BY THE PRESENCE OF A SUBSTITUTED UREA HAVING THE FORMULA R-NHCONH-R''HNCO IN WHICH R REPRESENTS A MONOVALENT ORGANIC RADICAL WHICH IS INERT TO ISOCYANATE GROUPS, SAID RADICAL BEING SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC AND CYCLOALIPHATIC RADICALS CONTAINING AT LEAST 4 CARBON ATOMS AND R'' IS AN ARYLENE GROUP, THE AMOUNT OF THE SAID SUBSTITUTED UREA BEING EQUIVALENT TO FROM 0.05 TO 2 PARTS BY WEIGHT OF THE CORRESPONDING PRIMARY AMINE RNH2 PER HUNDRED PARTS OF POLYURETHANE PRODUCT.
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) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |