US2708199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of organic polysulfides
Assignee: ConocoPhillips Co
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Filing: 1951-10-24
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Granted: 1955-05-10
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Expires: 1971-10-24
Abstract
No abstract record available.
Inventors
- 👤 Harold H Eby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:55
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/02; C10M135/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
THE METHOD OF PRODUCING SUBSTANTIALLY SATURATED OIL SOLUBLE ORGANIC POLYSULFIDES COMPRISING THE STEPS, REACTING A MONCONJUGATED OLEFINIC HYDROCARBON HAVING FROM AT LEAST SIX TO ABOUT 30 CARBON ATOMS WITH ABOUT A STOICHIOMETRIC EQUIVALENT OF A SULFUR HALIDE IN THE PRESENCE OF A CATALYST AMOUNT OF A LOW MOLECULAR WEIGHT ALIPHATIC ALCOHOL AT A TEMPERATURE OF FROM ABOUT 0* C. TO ABOUT 50* C. FOR A TIME NOT EXCEEDING ABOUT THREE HOURS SUFFICIENT TO FORM A DI(HALO ALKYL) SULFUR INTERMEDIATE, BUT INSUFFICIENT TO EFFECT DEHYDROHALOGENATION AS EVIDENCED BY THE SUBSTANTIAL SPLITTING OUT OF HYDROGEN HALIDE, THEN AT ONE CONDENSING THIS INTERMEDIATE WITH A WATER-SOLUBLE INORGANIC HIGHER POLYSULFIDE AT ABOUT 50-100 C., IN A MUTUAL SOLVENT FOR A TIME NOT TO EXCEED ABOUT 4 HOURS AND UPON COMPLETION OF THE CONDENSATION REACTION SEPARATING THE PRODUCT, FORMING AN ORGANIC POLYSULFIDE WHICH IS SUBSTANTIALLY A DIMER OF THE REACTANT OLEFIN AND HAVING COMBINED THEREWITH FROM AT LEAST 2 TO 3 ATOMS OF SULFUR PER UNSATURATED LINKAGE IN THE REACTANT OLEFIN.
Claim 2
Independent Claim
166 words
THE METHOD OF PRODUCING SUBSTANTIALLY SATURATED OIL SOLUBLE ORGANIC POLYSULFIDES COMPRISING THE STEPS, REACTING A MONCONJUGATED OLEFINIC HYDROCARBON HAVING FROM AT LEAST SIX TO ABOUT 30 CARBON ATOMS WITH ABOUT A STOICHIOMETRIC EQUIVALENT OF A SULFUR HALIDE IN THE PRESENCE OF A CATALYST AMOUNT OF A LOW MOLECULAR WEIGHT ALIPHATIC ALCOHOL AT A TEMPERATURE OF FROM ABOUT 0* C. TO ABOUT 50* C. FOR A TIME NOT EXCEEDING ABOUT THREE HOURS SUFFICIENT TO FORM A DI(HALO ALKYL) SULFUR INTERMEDIATE, BUT INSUFFICIENT TO EFFECT DEHYDROHALOGENATION AS EVIDENCED BY THE SUBSTANTIAL SPLITTING OUT OF HYDROGEN HALIDE, THEN AT ONE CONDENSING THIS INTERMEDIATE WITH A WATER-SOLUBLE INORGANIC HIGHER POLYSULFIDE AT ABOUT 50-100 C., IN A MUTUAL SOLVENT FOR A TIME NOT TO EXCEED ABOUT 4 HOURS AND UPON COMPLETION OF THE CONDENSATION REACTION SEPARATING THE PRODUCT, FORMING AN ORGANIC POLYSULFIDE WHICH IS SUBSTANTIALLY A DIMER OF THE REACTANT OLEFIN AND HAVING COMBINED THEREWITH FROM AT LEAST 2 TO 3 ATOMS OF SULFUR PER UNSATURATED LINKAGE IN THE REACTANT OLEFIN.
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) | 1958-05-09 | 1958-11-08 | 1959-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-09 | 1962-11-08 | 1963-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-09 | 1966-11-08 | 1967-05-10 | $7700.00 | Window Closed / Lapsed |