US3097231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of dibasic acids and esters thereof from petroleum fractions
Assignee: Sunoco Inc
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Filing: 1959-06-10
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Granted: 1963-07-09
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Expires: 1979-06-10
Abstract
No abstract record available.
Inventors
- 👤 Ivor W Mills
- 👤 John J Melchiore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:25
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/15; C08; C08K; C08K5/00; C08K5/04; C08K5/09
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
126 words
AS A NEW COMPOSITION OF MATTER, ESTERS OF AN ALCOHOL HAVNG 1 TO 8 CARBON ATOMS WITH A MIXTURE OF ACIDS PREPARED BY HYDROTREATING IN THE PRESENCE OF A HYDRIOTREATING CATALYST A PETROLEUM FRACTION BOILING MAINLY WITHIN THE RANGE OF 400*F. TO 550*F. AND SELECTED FROM THE GROUP CONSISTING OF CRACKED GAS-OIL AND MIXED AROMATIC HYDROCARBONS SEPARATED FROM CRACKED GAS-OIL UNDER CONDITIONS INCLUDING A TEMPERATURE BETWEEN 800*F. AND 1050*F., A PRESSURE BETWEEN 350 P.S.O.G. AND 2000 P.S.I.G., A MOLAR RATIO OF HYDROGEN TO OIL BETWEEN 5:1 AND 20:1, AND A LIQUID SPACE VELOCITY OF BETWEEN 0.5 AND 10.0; CONTACTING THE HYDROTREATED FRACTION WITH AN ALKALI METAL A MINERAL ACID. IN AN ETHER SOLUTION, FOLLOWED BY CARBONATION OF THE REACTION MIXTURE WITH CARBON DIOXIDE AND ACIDIFICATTION WITH
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) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |