US2768984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color improvement in preparation of drying oils
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1953-05-12
•
Granted: 1956-10-30
•
Expires: 1973-05-12
Abstract
No abstract record available.
Inventors
- 👤 Joseph K Mertzweiller
- 👤 Jr Joseph L Betts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:55
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08F236/10; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/945
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PROCESS FOR PREPARING A SUBSTANTIALLY COLORLESS SYNTHETIC DRYING OIL WHICH COMPRISES HEATING TO 25 TO 90* C. A MIXTURE OF 75 TO 85 PARTS OF BUTADIENE, 25 TO 15 PARTS OF STYRENE, 200 TO 300 PARTS OF HYDROCARBON DILUENT AND 20 TO 30 PARTS OF AN ETHER SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC ETHERS OF 4 TO 8 CARBON ATOMS AND CYCLIC DIETHERS OF 4 TO 8 CARBON ATOMS IN THE PRESENCE OF FINELY DIVIDED SODIUM AT A TEMPERATURE BETWEEN 40 AND 85* C. UNTIL SUBSTANTIALLY COMPLETE CONVERSION IS OBTAINED, THEN CONTINUING THE HEATING IN THE PRESENCE OF THE UNUSED SODIUM AT 50 TO 120* C., FOR 1/2 TO 1.5 HOURS.
Claim 2
Dependent Claim
113 words
A PROCESS FOR PREPARING A SUBSTANTIALLY COLORLESS SYNTHETIC DRYING OIL WHICH COMPRISES HEATING TO 25 TO 90* C. A MIXTURE OF 75 TO 85 PARTS OF BUTADIENE, 25 TO 15 PARTS OF STYRENE, 200 TO 300 PARTS OF HYDROCARBON DILUENT AND 20 TO 30 PARTS OF AN ETHER SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC ETHERS OF 4 TO 8 CARBON ATOMS AND CYCLIC DIETHERS OF 4 TO 8 CARBON ATOMS IN THE PRESENCE OF FINELY DIVIDED SODIUM AT A TEMPERATURE BETWEEN 40 AND 85* C. UNTIL SUBSTANTIALLY COMPLETE CONVERSION IS OBTAINED, THEN CONTINUING THE HEATING IN THE PRESENCE OF THE UNUSED SODIUM AT 50 TO 120* C., FOR 1/2 TO 1.5 HOURS.
References Cited (Backward Citations)
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Cited
GB334184A
Cited
US2264811A
Cited
GB545193A
Cited
US2527768A
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |