US2795631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying oils from steam-cracked petroleum fractions
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1954-07-02
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Granted: 1957-06-11
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Expires: 1974-07-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Nelson
- 👤 Fred W Banes
- 👤 Anthony H Gleason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:52
CPC Classifications
C; C08; C08F; C08F240/00; C08F36/00; C08F36/02; C08F36/04; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/945
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
131 words
PROCESS FOR PREPARING A SYNTHETIC DRYING OIL WHICH COMPRISES CRACKING A PETROLEUM FRACTION IN THE PRESENCE OF 50 TO 90 MOL PERCENT STEAM AT A TEMPERATURE BETWEEN ABOUT 1000 AND 1600*F., SEGREGATING A C4 CUT CONTAINING BETWEEN ABOUT 20 AND 50 MOL PERCENT OF BUTADIENE-1,3 MONOMER AND ABOUT 40 TO 72 MOL PERCENT BUTENES, POLYMERIZING SAID C4 CUT AT A TEMPERATURE BETWEEN ABOUT 50 AND 100*C. IN THE PRESENCE OF ABOUT 1.2 TO 5 PARTS BY WEIGHT OF AN ALKALI METAL CATALYST PER 100 PARTS BY WEIGHT OF MONOMER, CONTROLLING THE POLYMERIZATION WITH FROM ABOUT 1 TO 100 PARTS BY WEIGHT OF AN ETHER PER 100 PARTS BY WEIGHT OF MONOMER, SAID ETHER BEING SELECTED FROM THE GROUP CONSISTING OF LOWER ALIPHATIC ETHERS AND DIOXANE1,4 AND RECOVERING A COLORLESS DRYING OIL.
Claim 2
Dependent Claim
131 words
PROCESS FOR PREPARING A SYNTHETIC DRYING OIL WHICH COMPRISES CRACKING A PETROLEUM FRACTION IN THE PRESENCE OF 50 TO 90 MOL PERCENT STEAM AT A TEMPERATURE BETWEEN ABOUT 1000 AND 1600*F., SEGREGATING A C4 CUT CONTAINING BETWEEN ABOUT 20 AND 50 MOL PERCENT OF BUTADIENE-1,3 MONOMER AND ABOUT 40 TO 72 MOL PERCENT BUTENES, POLYMERIZING SAID C4 CUT AT A TEMPERATURE BETWEEN ABOUT 50 AND 100*C. IN THE PRESENCE OF ABOUT 1.2 TO 5 PARTS BY WEIGHT OF AN ALKALI METAL CATALYST PER 100 PARTS BY WEIGHT OF MONOMER, CONTROLLING THE POLYMERIZATION WITH FROM ABOUT 1 TO 100 PARTS BY WEIGHT OF AN ETHER PER 100 PARTS BY WEIGHT OF MONOMER, SAID ETHER BEING SELECTED FROM THE GROUP CONSISTING OF LOWER ALIPHATIC ETHERS AND DIOXANE1,4 AND RECOVERING A COLORLESS DRYING OIL.
Claim 3
Dependent Claim
133 words
PROCESS FOR PREPARING SYNTHETIC DRYING OIL WHICH COMPRISES CRACKING A PETROLEUM FRACTION IN THE PRESENCE OF 50 TO 90 MOL PERCENT STEAM AT A TEMPERATURE BETWEEN ABOUT 1000 AND 1600*F., SEGREGATING A C4 CUT CONTAINING BETWEEN ABOUT 20 AND 50 MOL PERCENT FUTADIENE-1,3 MONOMER AND ABOUT 40 70 MOL PERCENT OF STYRENE MONOMERIZING SAID C4 CUT WITH 15 TO 25 PARTS OF STYRENE MONOMER AT A TEMPERATURE BETWEEN 50 AND 100*C. IN THE PRESENCE OF ABOUT 2 TO 5 PARTS BY WEIGHT OF AN ALKALI METAL CATALYST PER 100 PARTS OF THE MONOMERS, CONTROLLING THE POLYMERIZATION WITH FROM 1 TO 100 PARTS BY WEIGHT OF AN ETHER PER 100 PARTS OF TEH MONOMERS, SAID ETHER BEING SELECTED FROM THE GROUP CONSISTING OF LOWER ALIPHATIC ETHERS AND DIOXANE-1,4, AND RECOVERING A COLORLESS DRYING OIL.
Claim 4
Dependent Claim
133 words
PROCESS FOR PREPARING SYNTHETIC DRYING OIL WHICH COMPRISES CRACKING A PETROLEUM FRACTION IN THE PRESENCE OF 50 TO 90 MOL PERCENT STEAM AT A TEMPERATURE BETWEEN ABOUT 1000 AND 1600*F., SEGREGATING A C4 CUT CONTAINING BETWEEN ABOUT 20 AND 50 MOL PERCENT FUTADIENE-1,3 MONOMER AND ABOUT 40 70 MOL PERCENT OF STYRENE MONOMERIZING SAID C4 CUT WITH 15 TO 25 PARTS OF STYRENE MONOMER AT A TEMPERATURE BETWEEN 50 AND 100*C. IN THE PRESENCE OF ABOUT 2 TO 5 PARTS BY WEIGHT OF AN ALKALI METAL CATALYST PER 100 PARTS OF THE MONOMERS, CONTROLLING THE POLYMERIZATION WITH FROM 1 TO 100 PARTS BY WEIGHT OF AN ETHER PER 100 PARTS OF TEH MONOMERS, SAID ETHER BEING SELECTED FROM THE GROUP CONSISTING OF LOWER ALIPHATIC ETHERS AND DIOXANE-1,4, AND RECOVERING A COLORLESS DRYING OIL.
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) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |