US2955091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions comprising reaction product of a polyalkyleneether glycol, a fatty acid triglyceride, and an arylene diisocyanate and foam prepared therefrom
Assignee: EIDP Inc
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Filing: 1957-08-27
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Granted: 1960-10-04
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Expires: 1977-08-27
Abstract
No abstract record available.
Inventors
- 👤 Robert P Kane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:02
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/6696; C08G18/74; C08G18/76; C08G18/7614; C08G18/7621; C08G2110/00; C08G2110/0041; C08G2110/005; C08G2110/0058; C08G2110/0083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A WATER - FOAMABLE POLYISOCYANATE - POLYURETHANE COMPOSITION WHICH IS OBTAINED BY REACTING AT A TEMPERATURE BETWEEN ABOUT 25* AND 100* C. (A) A POLYALKYLENEETHER GLYCOL HAVING A MOLECULAR WEIGHT OF FROM ABOUT 500 TO 1900, WITH AT LEAST 60% BY WEIGHT OF SAID GLYCOL BEING 1,2-PROPYLENEETHER UNITS, (B) A FATTY ACID TRIGLYCERIDE HAVING A HYDROXYL NUMBER NOT LESS THAN ABOUT 100, AND (C) AN ARYLENE DIISOCYANATE, THE AMOUNTS OF REACTANTS BEING SELECTED SO THAT THE MOLAR RATIO OF SAID GLYCOL TO SAID TRIGLYCERIDE IS FROM ABOUT 1:0.5 TO 1:1.5, AND THE RATIO OF THE NUMBER OF FREE ISOCYANATE GROUPS TO THE TOTAL NUMBER OF HYDROXYL GROUPS PRESENT ON SAID GLYCOL AND SAID TRIGLYCERIDE BEING FROM ABOUT 1.3:1 TO 1.6:1, SAID REACTION BEING CARRIED OUT UNTIL SUBSTANTIALLY ALL OF THE HYDROXYL GROUPS HAVE BEEN REACTED WITH ISOCYANATE GROUPS, FOLLOWED BY THE ADDITION OF A SUFFICIENT AMOUNT OF AN ARYLENE DIISOCYANATE SO THAT SAID COMPOSITION CONTAINS FROM ABOUT 8 TO 14% BY WEIGHT OF FREE ISOCYANATE GROUPS.
Claim 2
Dependent Claim
166 words
A WATER - FOAMABLE POLYISOCYANATE - POLYURETHANE COMPOSITION WHICH IS OBTAINED BY REACTING AT A TEMPERATURE BETWEEN ABOUT 25* AND 100* C. (A) A POLYALKYLENEETHER GLYCOL HAVING A MOLECULAR WEIGHT OF FROM ABOUT 500 TO 1900, WITH AT LEAST 60% BY WEIGHT OF SAID GLYCOL BEING 1,2-PROPYLENEETHER UNITS, (B) A FATTY ACID TRIGLYCERIDE HAVING A HYDROXYL NUMBER NOT LESS THAN ABOUT 100, AND (C) AN ARYLENE DIISOCYANATE, THE AMOUNTS OF REACTANTS BEING SELECTED SO THAT THE MOLAR RATIO OF SAID GLYCOL TO SAID TRIGLYCERIDE IS FROM ABOUT 1:0.5 TO 1:1.5, AND THE RATIO OF THE NUMBER OF FREE ISOCYANATE GROUPS TO THE TOTAL NUMBER OF HYDROXYL GROUPS PRESENT ON SAID GLYCOL AND SAID TRIGLYCERIDE BEING FROM ABOUT 1.3:1 TO 1.6:1, SAID REACTION BEING CARRIED OUT UNTIL SUBSTANTIALLY ALL OF THE HYDROXYL GROUPS HAVE BEEN REACTED WITH ISOCYANATE GROUPS, FOLLOWED BY THE ADDITION OF A SUFFICIENT AMOUNT OF AN ARYLENE DIISOCYANATE SO THAT SAID COMPOSITION CONTAINS FROM ABOUT 8 TO 14% BY WEIGHT OF FREE ISOCYANATE GROUPS.
References Cited (Backward Citations)
US2772245A
Cited
US2833730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |