Patent US2984679A successfully refreshed from Google Patents.
US2984679A
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Process for preparing castor oil-epoxidized castor oil-arylene diisocyanate reaction product
Assignee: Baker Castor Oil Co
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Filing: 1958-05-14
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Granted: 1961-05-16
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Expires: 1978-05-14
Abstract
No abstract record available.
Inventors
- 👤 Ehrlich Arthur
- 👤 Smith Malcolm Kent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:47
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/36; C08G18/40; C08G18/58; C08G2110/00; C08G2110/0025; C08G2110/0083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PROCESS FOR PRODUCING CELLULAR PLASTIC MATERIAL PREPOLYMER WHICH COMPRISES REACTING FROM ABOUT 2 TO ABOUT 4 NCO EQUIVALENTS OF AN ARYLENE DIISOCYANATE, PER EQUIVALENT OF HYDROXYL GROUP IN A MIXTURE OF ABOUT 80 TO 90 PARTS BY WEIGHT OF CASTOR OIL AND ABOUT 10 TO ABOUT 20 PARTS BY WEIGHT OF A PARTIALLY EPOXIZED CASTOR OIL, IN THE ABSENCE OF ATMOSPHERIC MOISTURE AT A TEMPERATURE BETWEEN ABOUT 80*C. AND ABOUT 130*C.
Claim 2
Dependent Claim
72 words
A PROCESS FOR PRODUCING CELLULAR PLASTIC MATERIAL PREPOLYMER WHICH COMPRISES REACTING FROM ABOUT 2 TO ABOUT 4 NCO EQUIVALENTS OF AN ARYLENE DIISOCYANATE, PER EQUIVALENT OF HYDROXYL GROUP IN A MIXTURE OF ABOUT 80 TO 90 PARTS BY WEIGHT OF CASTOR OIL AND ABOUT 10 TO ABOUT 20 PARTS BY WEIGHT OF A PARTIALLY EPOXIZED CASTOR OIL, IN THE ABSENCE OF ATMOSPHERIC MOISTURE AT A TEMPERATURE BETWEEN ABOUT 80*C. AND ABOUT 130*C.
References Cited (Backward Citations)
US2569502A
Cited
US2833730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |