US3053902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of mercaptans
Assignee: Union Oil Company of California
•
Filing: 1957-09-20
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Granted: 1962-09-11
•
Expires: 1977-09-20
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Doumani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:05
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/02; C07C319/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PROCESS FOR PREPARING A LOWER ALKYL MERCAPTAN WHICH COMPRISES CONTACTING A VAPOROUS FEED MIXTURE COMPRISING A LOWER ALKANOL AND HYDROGEN SULFIDE WITH AN ALKALINE CATALYST AT A TEMPERATURE BAETWEEN ABOUT 400* AND 1200*F., THE MOLE-RATAIO OF LOWER ALKANOL TO HYDROGEN SULFIDE IN SAID FEED MIXTURE BEING GREATER THAN 1, CONTINUING SAID CONTACTING FOR A SUFFICIENT LENGTH OF TIME TO CONSUME AT LEAST MAJOR PORTION OF THE HYDROGEN SULFIDE SUPPLIED, AND RECOVERING ALKYL MERCAPTAN FROM THE REACTION PRODUCTS, SAID CATAALYSTS COMPRISING AS ITS ESSENTIAL ACTIVE COMPONENT AN ALKALINE MATERIAL CAPABLE OF FORMING WITH WATER A SOLUTION HAVING A PH ABOVE ABOUT 10.
Claim 2
Dependent Claim
102 words
A PROCESS FOR PREPARING A LOWER ALKYL MERCAPTAN WHICH COMPRISES CONTACTING A VAPOROUS FEED MIXTURE COMPRISING A LOWER ALKANOL AND HYDROGEN SULFIDE WITH AN ALKALINE CATALYST AT A TEMPERATURE BAETWEEN ABOUT 400* AND 1200*F., THE MOLE-RATAIO OF LOWER ALKANOL TO HYDROGEN SULFIDE IN SAID FEED MIXTURE BEING GREATER THAN 1, CONTINUING SAID CONTACTING FOR A SUFFICIENT LENGTH OF TIME TO CONSUME AT LEAST MAJOR PORTION OF THE HYDROGEN SULFIDE SUPPLIED, AND RECOVERING ALKYL MERCAPTAN FROM THE REACTION PRODUCTS, SAID CATAALYSTS COMPRISING AS ITS ESSENTIAL ACTIVE COMPONENT AN ALKALINE MATERIAL CAPABLE OF FORMING WITH WATER A SOLUTION HAVING A PH ABOVE ABOUT 10.
References Cited (Backward Citations)
US2116182A
Cited
US2820060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |