US2820060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of organic thiols
Assignee: Pure Oil Co
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Filing: 1954-07-23
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Granted: 1958-01-14
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Expires: 1974-07-23
Abstract
No abstract record available.
Inventors
- 👤 Hillis O Folkins
- 👤 Elmer L Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:08
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/02; B01J23/04; C; C07; C07C; C07C319/00; C07C319/02; C07C319/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN THE METHOD OF PRODUCING AN ORGANIC THIOL BY THE REACTION BETWEEN HYDROGEN SULFICE AND A C1-C16 MONOHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF ALKANOLS, MONOCYCLIC ARYL-SUBSTITUTED ALKANOLS AND MONOCYCLIC ARALKYL-SUBSTITUTED ALKANOLS, AT A TEMPERATURE WITHING THE RANGE OF 300-930*F. AND AT A SUITABLE MOL RATIO OF HYDROGEN SULFIDE TO ALCOHOL TO EFFECT THE PRODUCTION OF SAID THIOL AS THE PRINCIPAL PRODUCT OF SAID REACTION, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID REACTION IN THE PRESENCE OF AN ACTIVATED ALUMINA CATALYST CONTAINING, AS AN ACTIVITY-PROMOTING AGENT, ABOUT 0.5% TO 15% BY WEIGHT, BASED ON THE CATALYST COMPOSITION, OF AT LEAST ONE ALKALI METAL OXIDE.
Claim 2
Dependent Claim
104 words
IN THE METHOD OF PRODUCING AN ORGANIC THIOL BY THE REACTION BETWEEN HYDROGEN SULFICE AND A C1-C16 MONOHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF ALKANOLS, MONOCYCLIC ARYL-SUBSTITUTED ALKANOLS AND MONOCYCLIC ARALKYL-SUBSTITUTED ALKANOLS, AT A TEMPERATURE WITHING THE RANGE OF 300-930*F. AND AT A SUITABLE MOL RATIO OF HYDROGEN SULFIDE TO ALCOHOL TO EFFECT THE PRODUCTION OF SAID THIOL AS THE PRINCIPAL PRODUCT OF SAID REACTION, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID REACTION IN THE PRESENCE OF AN ACTIVATED ALUMINA CATALYST CONTAINING, AS AN ACTIVITY-PROMOTING AGENT, ABOUT 0.5% TO 15% BY WEIGHT, BASED ON THE CATALYST COMPOSITION, OF AT LEAST ONE ALKALI METAL OXIDE.
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) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |