US3022351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of organic polysulfides
Assignee: Phillips Petroleum Co
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Filing: 1957-03-07
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Granted: 1962-02-20
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Expires: 1977-03-07
Abstract
No abstract record available.
Inventors
- 👤 Clifford H Mihm
- 👤 Paul F Warner
- 👤 Jackie E Duke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:13
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/22; C07C319/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
THE PROCESS FOR THE PREPARATION OF DIALKYL POLYSULFIDE WHICH COMPRISES REACTING TERTIARY HEXADECYL MERCAPTAN WITH NOT MORE THAN A STOICHIOMETRIC AMOUNT OF SULFUR IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL OXIDES, ALKALI METAL HYDROXIDES, ALKALI METAL ALCOHOLATES, ALKALI METAL SULFIDES, ALKALI METAL POLYSULFIDES AND ALKALINE WITH METAL SULFIDES, AND A PROMOTER COMPRISING A MINOR AMOUNT OF METHANOL AT A TEMPERATURE UP TO 150* F. AND RECOVERING DI-TERTIARY HEXADECYL POLYSULFIDE, COMPRISING A MAJOR PROPORTION OF TETRA-AND PENTA-SULFIDES.
Claim 2
Dependent Claim
83 words
THE PROCESS FOR THE PREPARATION OF DIALKYL POLYSULFIDE WHICH COMPRISES REACTING TERTIARY HEXADECYL MERCAPTAN WITH NOT MORE THAN A STOICHIOMETRIC AMOUNT OF SULFUR IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL OXIDES, ALKALI METAL HYDROXIDES, ALKALI METAL ALCOHOLATES, ALKALI METAL SULFIDES, ALKALI METAL POLYSULFIDES AND ALKALINE WITH METAL SULFIDES, AND A PROMOTER COMPRISING A MINOR AMOUNT OF METHANOL AT A TEMPERATURE UP TO 150* F. AND RECOVERING DI-TERTIARY HEXADECYL POLYSULFIDE, COMPRISING A MAJOR PROPORTION OF TETRA-AND PENTA-SULFIDES.
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) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |