US2930815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of thioethers
Assignee: Rohm and Haas Co
•
Filing: 1959-01-27
•
Granted: 1960-03-29
•
Expires: 1979-01-27
Abstract
No abstract record available.
Inventors
- 👤 John J Nedwick
- 👤 Snyder John Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:18
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/14; C07C319/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A METHOD FOR PREPARING VINYL THIOETHERS WHICH COMPRISES MIXING A THIOL, A STRONGLY BASIC ALKALI METAL CATALYST, AND AN INERT ORGANIC SOLVENT WHICH DISSOLVES AT LEAST ABOUT 18 VOLUMES OF ACETYLENE MEASURED AT STANDARD CONDITIONS PER VOLUME OF SOLVENT AT 0*C. AND ONE ATMOSPHERE PRESSURE, DISSOLVING ACETYLENE IN THE RESULTING MIXTURE AT A TEMPERATURE BELOW ABOUT 10*C. UNDER PRESSURE UNTIL THE DISSOLVED ACETYLENE IS AT LEAST ABOUT EQUIVALENT TO THE THIOL IN SAID MIXTURE HEATING THE MIXTURE CONTAINING ACETYLENE IN LIQUID PHASE AT A REACTING TEMPRERATURE BETWEEN 100* AD 200*C. UNDER PRESSURE BETWEEN ABOUT 1000 AND 5000 POUNDS PER SQUARE INCH AND AT LEAST SUFFICIENT TO MAINTAIN THE REACTING MIXTURE ENTIRELY IN LIQUID PHASE AND TO PREVENT DESORPTION OF ACETYLENE.
Claim 2
Independent Claim
120 words
A METHOD FOR PREPARING VINYL THIOETHERS WHICH COMPRISES MIXING A THIOL, A STRONGLY BASIC ALKALI METAL CATALYST, AND AN INERT ORGANIC SOLVENT WHICH DISSOLVES AT LEAST ABOUT 18 VOLUMES OF ACETYLENE MEASURED AT STANDARD CONDITIONS PER VOLUME OF SOLVENT AT 0*C. AND ONE ATMOSPHERE PRESSURE, DISSOLVING ACETYLENE IN THE RESULTING MIXTURE AT A TEMPERATURE BELOW ABOUT 10*C. UNDER PRESSURE UNTIL THE DISSOLVED ACETYLENE IS AT LEAST ABOUT EQUIVALENT TO THE THIOL IN SAID MIXTURE HEATING THE MIXTURE CONTAINING ACETYLENE IN LIQUID PHASE AT A REACTING TEMPRERATURE BETWEEN 100* AD 200*C. UNDER PRESSURE BETWEEN ABOUT 1000 AND 5000 POUNDS PER SQUARE INCH AND AT LEAST SUFFICIENT TO MAINTAIN THE REACTING MIXTURE ENTIRELY IN LIQUID PHASE AND TO PREVENT DESORPTION OF ACETYLENE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |