US2776997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of hydroxy thio-ethers
Assignee: Union Oil Company of California
•
Filing: 1953-01-30
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Granted: 1957-01-08
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Expires: 1973-01-30
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Doumani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:42
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PROCESS FOR PREPARING A HYDROXY THIO-ETHER WHICH COMPRISES INITIATING A REACTION BETWEEN AN ALKYLENE OXIDE AND AN ORGANIC THIOL AT A TEMPERATURE BELOW ABOUT 70*C. IN THE PRESENCE OF AT LEAST ABOUT 10% BY WEIGHT OF A HYDROXY THIO-ETHER, AND IN THE ABSENCE OF EXTRANEOUS CATALYTIC MATERIALS, AND THEREAFTER CONTINUING SAID REACTION TO SUBSTANTIAL COMPLETION AT TEMPERATURES BETWEEN ABOUT 50* AND 100*C.
Claim 2
Dependent Claim
63 words
A PROCESS FOR PREPARING A HYDROXY THIO-ETHER WHICH COMPRISES INITIATING A REACTION BETWEEN AN ALKYLENE OXIDE AND AN ORGANIC THIOL AT A TEMPERATURE BELOW ABOUT 70*C. IN THE PRESENCE OF AT LEAST ABOUT 10% BY WEIGHT OF A HYDROXY THIO-ETHER, AND IN THE ABSENCE OF EXTRANEOUS CATALYTIC MATERIALS, AND THEREAFTER CONTINUING SAID REACTION TO SUBSTANTIAL COMPLETION AT TEMPERATURES BETWEEN ABOUT 50* AND 100*C.
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) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |