US3086997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of 2-mercaptoethanol
Assignee: Phillips Petroleum Co
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Filing: 1961-11-07
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Granted: 1963-04-23
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Expires: 1981-11-07
Abstract
No abstract record available.
Inventors
- 👤 Paul F Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:50
CPC Classifications
C; C07; C07C; C07C323/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
47 words
A PROCESS OF PREPARING 2-MERCAPTOETHANOL WHICH COMPRISES INTERREACTING SODIUM HYDROSULFIDE AND ETHYLENE OXIDE AT A TEMPERATURE IN THE RANGE 125-250*F. AND THEN NEUTRALIZING THE REACTION MASS THUS OBTAINED WITH SULFURIC ACID FOLLOWING WHICH A FINAL MASS THUS OBTAINED IS SUBJECTED TO A RECOVERY PROCESS FOR RECOVERING 2MERCAPTOETHANOL.
References Cited (Backward Citations)
FR769216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |