Patent US2761880A successfully refreshed from Google Patents.
US2761880A
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Improved process for making alcoholic solutions of alkali-metal alkoxides
Assignee: Wacker Chemie AG
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Filing: 1953-12-31
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Granted: 1956-09-04
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Expires: 1973-12-31
Abstract
No abstract record available.
Inventors
- 👤 Gerber Adolf
- 👤 Leschhorn Otto
- 👤 Muller Helmut
- 👤 Rambausek Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:36
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/68; C07C29/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
PROCESS FOR MAKING ALCOHOLIC SOLUTIONS OF ALKALIMETAL ALKOXIDES THAT COMPRISES SPRAYING ALKALI-METAL AMALGAM INTO THE INTERIOR OF A REACTION VESSEL NEAR THE TOP THEREOF; PERMITTING IT TO FLOW DOWNWARD BY GRAVITY AS DISCRETE, FINELY DIVIDED PARTICLES, THROUGH A CATALYST MASS COMPRISED OF A SUBSTANCE CHOSEN FROM THE GROUP CONSISTING OF ELECTRODE GRAPHITE AND ACTIVATED CARBON, WITH IRON SHAVINGS, SAID CATALYTIC MASS BEING SUB-DIVIDED INTO PARTICLES HAVING AN AVERAGE DIAMETER OF ABOUT 2 TO 3 MILLIMETERS; SIMULTANEOUSLY FLOWING A COUNTERCURRENT OF AN ALCOHOL IN LIQUID PHASE UPWARD THROUGH THE CATALYTIC MASS, WHEREBY THE FINELY DIVIDED PARTICLES OF ALKALI-METAL GAM AND THE ALCOHOL INTERACT IN THE PRESENCE OF THE CATALYTIC MASS TO FORM AN ALCOHOLIC SOLUTION FROM A SUPERNATANT ALKOXIDE; WITHDRAWING THIS SOLUTION FOR A SUPERNATANT LIQUID LAYER ABOVE THE CATALYTIC MASS; AND RECOVERING SPENT ALKALI-METAL-FREE MERCURY FROM THE BOTTOM PORTION OF THE REACTION VESSEL.
Claim 2
Dependent Claim
143 words
PROCESS FOR MAKING ALCOHOLIC SOLUTIONS OF ALKALIMETAL ALKOXIDES THAT COMPRISES SPRAYING ALKALI-METAL AMALGAM INTO THE INTERIOR OF A REACTION VESSEL NEAR THE TOP THEREOF; PERMITTING IT TO FLOW DOWNWARD BY GRAVITY AS DISCRETE, FINELY DIVIDED PARTICLES, THROUGH A CATALYST MASS COMPRISED OF A SUBSTANCE CHOSEN FROM THE GROUP CONSISTING OF ELECTRODE GRAPHITE AND ACTIVATED CARBON, WITH IRON SHAVINGS, SAID CATALYTIC MASS BEING SUB-DIVIDED INTO PARTICLES HAVING AN AVERAGE DIAMETER OF ABOUT 2 TO 3 MILLIMETERS; SIMULTANEOUSLY FLOWING A COUNTERCURRENT OF AN ALCOHOL IN LIQUID PHASE UPWARD THROUGH THE CATALYTIC MASS, WHEREBY THE FINELY DIVIDED PARTICLES OF ALKALI-METAL GAM AND THE ALCOHOL INTERACT IN THE PRESENCE OF THE CATALYTIC MASS TO FORM AN ALCOHOLIC SOLUTION FROM A SUPERNATANT ALKOXIDE; WITHDRAWING THIS SOLUTION FOR A SUPERNATANT LIQUID LAYER ABOVE THE CATALYTIC MASS; AND RECOVERING SPENT ALKALI-METAL-FREE MERCURY FROM THE BOTTOM PORTION OF THE REACTION VESSEL.
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) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |