Patent US3022326A successfully refreshed from Google Patents.
US3022326A
Expired / Lapsed
US
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Urethane modified vegetable oil
Assignee: Textron Inc
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Filing: 1958-10-29
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Granted: 1962-02-20
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Expires: 1978-10-29
Abstract
No abstract record available.
Inventors
- 👤 Herbert M Schroeder
- 👤 Donald J Waythomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:17
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
THE METHOD OF PREPARING A URETHANE MODIFIED ETHYLENICALLY UNSATURATED VEGETABLE OIL HAVING DRYING PROPERTIES WHICH COMPRISES REACTION, BY BRINGING INTO CONTACT AND HEATING A HYDROCARBON DIISOCYANATE AND A DIOL SYSTEM COMPRISING A DIOL ESTER OF AN ETHYLENICALLY UNSATURATED HIGHER FATTY ACID OF A VEGETABLE OIL WITH A LOWER HYDROCARBON POLY WHICH IS AT LEAST TRIFUNCTIONAL AND A POLYGLYCOL HAVING A MOLECULAR WEIGHT IN THE RANGE 150 TO 2000, THE AMOUNT OF SAID POLYGLYCOL COMPRISING FROM 8% TO 50% BY WEIGHT OF SAID DIOL SYSTEM, THE AMOUNT OF DIISOCYANATE EMPOLYED BEING SUBSTANTIALLY EQUIVALENT TO THE TOTAL HYDROXYL OF THE DIOL SYSTEM, AND THE AMOUNT OF DIOL ESTER BEING SUFFICIENT TO PRODUCE A FINAL OIL LENGTH OF 20% TO 75%, THE REACTION BEING CONTINUED UNDER HEATING UNTIL THE RESULTANT URETHANE MODIFIED OIL POSSESSES SUBSTANTIALLY NO FREE ISOCYANATE.
Claim 2
Independent Claim
135 words
THE METHOD OF PREPARING A URETHANE MODIFIED ETHYLENICALLY UNSATURATED VEGETABLE OIL HAVING DRYING PROPERTIES WHICH COMPRISES REACTION, BY BRINGING INTO CONTACT AND HEATING A HYDROCARBON DIISOCYANATE AND A DIOL SYSTEM COMPRISING A DIOL ESTER OF AN ETHYLENICALLY UNSATURATED HIGHER FATTY ACID OF A VEGETABLE OIL WITH A LOWER HYDROCARBON POLY WHICH IS AT LEAST TRIFUNCTIONAL AND A POLYGLYCOL HAVING A MOLECULAR WEIGHT IN THE RANGE 150 TO 2000, THE AMOUNT OF SAID POLYGLYCOL COMPRISING FROM 8% TO 50% BY WEIGHT OF SAID DIOL SYSTEM, THE AMOUNT OF DIISOCYANATE EMPOLYED BEING SUBSTANTIALLY EQUIVALENT TO THE TOTAL HYDROXYL OF THE DIOL SYSTEM, AND THE AMOUNT OF DIOL ESTER BEING SUFFICIENT TO PRODUCE A FINAL OIL LENGTH OF 20% TO 75%, THE REACTION BEING CONTINUED UNDER HEATING UNTIL THE RESULTANT URETHANE MODIFIED OIL POSSESSES SUBSTANTIALLY NO FREE ISOCYANATE.
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) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |