US2970062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urethane modified drying oil
Assignee: SPENCER KELLOGG AND SONS Inc
•
Filing: 1958-10-29
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Granted: 1961-01-31
•
Expires: 1978-10-29
Abstract
No abstract record available.
Inventors
- 👤 Hans M Hauge
- 👤 Joseph A Pawlak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:31
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
THE METHOD COMPRISING (A) HEATING AN ETHYLENTICALLY UNSATURATED VEGETABLE OIL SELECTED FROM THE GROUP CONSISTING OF DRYING OILS AND SEMIDRYING OILS AT A TEMPERATURE IN THE RANGE 420*F. TO 550*F. WITH 7% 25% BY WEIGHT OF AN ALIPHATIC ALCOHOL WHICH IS AT LEAST TRIFUNCTIONAL, UNTIL ALCOHOLYSIS HAS OCCURED AND ESTER INTERCHANGE TO FORM A DIOL ESTER IS COMPLETED, SAID DIOL ESTER HAVING A HYDROXYL VALUE IN THE RANGE 120 TO 260, (B) THEN REACTING THE DIOL ESTER MODIFIED ETHYLENICALLY UNSATURATED OIL THUS PRODUCED WITH A POLYISOCYNATE BY CONTACT AT A TEMPERATURE BELOW ABOUT 130*F., THE AMOUNT OF POLYISOCYANATE EMPLOYED BEING SUBSTANTIALLY EQUIVALENT TO THE HYDROXYL OF THE OIL DIOL ESTER, UNTIL THERE IS LESS THAN 20% OF THE POLYISOCYNATE UNREACTED AND THEREAFTER HEATING THE MIXTURE TO ABOVE 130*F. UNTIL THERE IS LESS THAN 1% UNREACTED POLYISOCYANATE.
Claim 2
Independent Claim
136 words
THE METHOD COMPRISING (A) HEATING AN ETHYLENTICALLY UNSATURATED VEGETABLE OIL SELECTED FROM THE GROUP CONSISTING OF DRYING OILS AND SEMIDRYING OILS AT A TEMPERATURE IN THE RANGE 420*F. TO 550*F. WITH 7% 25% BY WEIGHT OF AN ALIPHATIC ALCOHOL WHICH IS AT LEAST TRIFUNCTIONAL, UNTIL ALCOHOLYSIS HAS OCCURED AND ESTER INTERCHANGE TO FORM A DIOL ESTER IS COMPLETED, SAID DIOL ESTER HAVING A HYDROXYL VALUE IN THE RANGE 120 TO 260, (B) THEN REACTING THE DIOL ESTER MODIFIED ETHYLENICALLY UNSATURATED OIL THUS PRODUCED WITH A POLYISOCYNATE BY CONTACT AT A TEMPERATURE BELOW ABOUT 130*F., THE AMOUNT OF POLYISOCYANATE EMPLOYED BEING SUBSTANTIALLY EQUIVALENT TO THE HYDROXYL OF THE OIL DIOL ESTER, UNTIL THERE IS LESS THAN 20% OF THE POLYISOCYNATE UNREACTED AND THEREAFTER HEATING THE MIXTURE TO ABOVE 130*F. UNTIL THERE IS LESS THAN 1% UNREACTED POLYISOCYANATE.
References Cited (Backward Citations)
US2358475A
Cited
US2769826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |