US2767229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizing drying oils
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1953-02-26
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Granted: 1956-10-16
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Expires: 1973-02-26
Abstract
No abstract record available.
Inventors
- 👤 Anthony H Gleason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:04
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08F236/10; C08K; C08K5/00; C08K5/04; C08K5/13; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/945
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A PROCESS FOR PREPARING A DRYING OIL WHICH COMPRISES COPOLYMERIZING A MIXTURE OF FROM 75 TO 85% OF BUTADIENE AND 25 TO 15% OF STYRENE IN 200 TO 300 PARTS OF A HYDROCARBON DILUENT PER 100 PARTS OF MONOMERS AND 20 TO 30 PARTS OF A MEMBER OF 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 1 TO 5 PARTS OF FINELY DIVIDED SODIUM AT A TEMPERATURE BETWEEN 40 AND 85* C., CONTINUING THE POLYMERIZATION UNTIL SUBSTANTIALLY 100% CONVERSION IS REACHED AND A PRODUCT HAVING AN INTRINSIC VISCOSITY BETWEEN 0.05 AND 0.4 IS OBTAINED, STOPPING THE POLYMERIZATION BY KILLING AND REMOVING THE CATALYST AND THEN HEAT BODYING THE PRODUCT AT A TEMPERATURE BETWEEN 150* AND 275* C., IN THE PRESENCE OF 0.001 TO 0.3% OF AN ALKYLATED PHENOL.
Claim 2
Dependent Claim
145 words
A PROCESS FOR PREPARING A DRYING OIL WHICH COMPRISES COPOLYMERIZING A MIXTURE OF FROM 75 TO 85% OF BUTADIENE AND 25 TO 15% OF STYRENE IN 200 TO 300 PARTS OF A HYDROCARBON DILUENT PER 100 PARTS OF MONOMERS AND 20 TO 30 PARTS OF A MEMBER OF 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 1 TO 5 PARTS OF FINELY DIVIDED SODIUM AT A TEMPERATURE BETWEEN 40 AND 85* C., CONTINUING THE POLYMERIZATION UNTIL SUBSTANTIALLY 100% CONVERSION IS REACHED AND A PRODUCT HAVING AN INTRINSIC VISCOSITY BETWEEN 0.05 AND 0.4 IS OBTAINED, STOPPING THE POLYMERIZATION BY KILLING AND REMOVING THE CATALYST AND THEN HEAT BODYING THE PRODUCT AT A TEMPERATURE BETWEEN 150* AND 275* C., IN THE PRESENCE OF 0.001 TO 0.3% OF AN ALKYLATED PHENOL.
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) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |