US2820061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of organic thiols
Assignee: Pure Oil Co
•
Filing: 1954-07-28
•
Granted: 1958-01-14
•
Expires: 1974-07-28
Abstract
No abstract record available.
Inventors
- 👤 Hillis O Folkins
- 👤 Elmer L Miller
- 👤 Kempf Adolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:08
CPC Classifications
B; B01; B01J; B01J27/00; C; C07; C07C; C07C319/00; C07C319/02; C07C319/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN THE METHOD FOR PRODUCING ORGANIC THIOLS BY THE REACTION BETWEEN HYDROGEN SULFIDE 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 WITHIN THE RANGE OF ABOUT 300-930*F., 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 CONTAINING ABOUT 0.5 TO 15% BY WEIGHT OF THE LEAST ONE ACTIVITYPROMOTING AGENT SELECTED FROM THE GROUP CONSISTING OF THE CARBONATE, PHOSPHATES, HALIDES, SULFIDES AND SULFATES OF THE ALKALI METALS IN AN AMOUNT SUFFICIENT TO ENHANCE THE CATALYTIC ACTIVITY OF SAID ALUMINA.
Claim 2
Dependent Claim
121 words
IN THE METHOD FOR PRODUCING ORGANIC THIOLS BY THE REACTION BETWEEN HYDROGEN SULFIDE 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 WITHIN THE RANGE OF ABOUT 300-930*F., 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 CONTAINING ABOUT 0.5 TO 15% BY WEIGHT OF THE LEAST ONE ACTIVITYPROMOTING AGENT SELECTED FROM THE GROUP CONSISTING OF THE CARBONATE, PHOSPHATES, HALIDES, SULFIDES AND SULFATES OF THE ALKALI METALS IN AN AMOUNT SUFFICIENT TO ENHANCE THE CATALYTIC ACTIVITY OF SAID ALUMINA.
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 |