US2839581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid reagent disulfide process
Assignee: Phillips Petroleum Co
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Filing: 1956-07-31
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Granted: 1958-06-17
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Expires: 1976-07-31
Abstract
No abstract record available.
Inventors
- 👤 Paul F Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:22
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/22; C07C319/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN A PROCESS FOR THE OXIDATION OF A MERCAPTAN CONTAINING A SINGLE SH GROUP TO THE CORRESPONDING DISULFIDE IN THE PRESENCE OF A SEPARATE OXIDIZING REAGENT PHASE COMPRISING A SOLUTION OF A CUPRIC HALIDE IN A ORGANIC SOLVENT CONTAINING 3 TO 30 WEIGHT PRECENT WATER DISSOLVED THEREIN, THE IMPROVEMENT WHICH COMPRISES MAINTAINING A VOLUME RATIO OF THE PRODUCT DISULFIDE PHASE TO THE SAID REAGENT PHASE DURING REGENERATION OF SAID REAGENT WITH A FREE OXYGEN-CONTAINING GAS, BETWEEN 30:70 AND 85:15, THE DISULFIDE PHASE BEING THE CONTINUOUS PHASE.
Claim 2
Dependent Claim
86 words
IN A PROCESS FOR THE OXIDATION OF A MERCAPTAN CONTAINING A SINGLE SH GROUP TO THE CORRESPONDING DISULFIDE IN THE PRESENCE OF A SEPARATE OXIDIZING REAGENT PHASE COMPRISING A SOLUTION OF A CUPRIC HALIDE IN A ORGANIC SOLVENT CONTAINING 3 TO 30 WEIGHT PRECENT WATER DISSOLVED THEREIN, THE IMPROVEMENT WHICH COMPRISES MAINTAINING A VOLUME RATIO OF THE PRODUCT DISULFIDE PHASE TO THE SAID REAGENT PHASE DURING REGENERATION OF SAID REAGENT WITH A FREE OXYGEN-CONTAINING GAS, BETWEEN 30:70 AND 85:15, THE DISULFIDE PHASE BEING THE CONTINUOUS PHASE.
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) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |