US3006966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of mercaptans
Assignee: Union Oil Company of California
•
Filing: 1958-06-16
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Granted: 1961-10-31
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Expires: 1978-06-16
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Doumani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:09
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/02; C07C319/08; C07B; C07B45/00; C07B45/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS FOR PREPARING METHYL MERCAPTAN WHICH COMPRISES PASSING A FEED MIXTURE CONSISTING ESSENTIALLY OF METHANOL AND HYDROGEN SULFIDE OVER A STRONGLY ALKALINE CATALYST AT A TEMPERATURE BETWEEN ABOUT 400* AND 1200* F. AND AT A CONTACT TIME BETWEEN ABOUT 0.005 AND 10 SECONDS, AND RECOVERING METHYL MERCAPTAN FROM THE REACTION PRODUCTS, SAID CATALYST BEING SELECTED FROM THE CLASS CONSISTING OF SODIUM HYDROXIDE, POTASSIUM HYDROXIDE AND THE OXIDES, SULFIDES, CARBONATES AND PHOSPHATES OF THE ALKALI METALS.
Claim 2
Dependent Claim
76 words
A PROCESS FOR PREPARING METHYL MERCAPTAN WHICH COMPRISES PASSING A FEED MIXTURE CONSISTING ESSENTIALLY OF METHANOL AND HYDROGEN SULFIDE OVER A STRONGLY ALKALINE CATALYST AT A TEMPERATURE BETWEEN ABOUT 400* AND 1200* F. AND AT A CONTACT TIME BETWEEN ABOUT 0.005 AND 10 SECONDS, AND RECOVERING METHYL MERCAPTAN FROM THE REACTION PRODUCTS, SAID CATALYST BEING SELECTED FROM THE CLASS CONSISTING OF SODIUM HYDROXIDE, POTASSIUM HYDROXIDE AND THE OXIDES, SULFIDES, CARBONATES AND PHOSPHATES OF THE ALKALI METALS.
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) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |