US2810768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of glycerine
Assignee: Shell Development Co
•
Filing: 1954-04-19
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Granted: 1957-10-22
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Expires: 1974-04-19
Abstract
No abstract record available.
Inventors
- 👤 Kenneth B Cofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:24
CPC Classifications
C; C07; C07C; C07C31/00; C07C31/18; C07C31/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS FOR HYDROLYZING A 1-HALO-2,3-EPOXYPROPANE WHICH COMPRISES CONTACTING THE 1-HALO-2,3-EPOXYPROPANE WITH AN AQUEOUS SOLUTION CONTAINING AT LEAST A STOICHIOMETRIC AMOUNT OF AN INORGANIC CARBONATE OF THE GROUP CONSISTING OF THE ALKALI METAL AND ALKALINE EARTH METAL CARBONATES AS THE ESSENTIAL HYDROLYZING AGENT AT A TEMPERATURE OF 130*C. TO 200*C. IN THE PRESENCE OF CARBON DIOXIDE UNDER A PRESSURE IN THE RANGE OF 100 TO 500 P.S.I.G. SUFFICIENT TO MAINTAIN THE REACTANTA IN THE LIQUID PHASE FOR ABOUT 5 TO 20 MINUTES, AND RECOVERING GLYCERINE FROM THE RESULTING REACTION MIXTURE.
Claim 2
Dependent Claim
90 words
A PROCESS FOR HYDROLYZING A 1-HALO-2,3-EPOXYPROPANE WHICH COMPRISES CONTACTING THE 1-HALO-2,3-EPOXYPROPANE WITH AN AQUEOUS SOLUTION CONTAINING AT LEAST A STOICHIOMETRIC AMOUNT OF AN INORGANIC CARBONATE OF THE GROUP CONSISTING OF THE ALKALI METAL AND ALKALINE EARTH METAL CARBONATES AS THE ESSENTIAL HYDROLYZING AGENT AT A TEMPERATURE OF 130*C. TO 200*C. IN THE PRESENCE OF CARBON DIOXIDE UNDER A PRESSURE IN THE RANGE OF 100 TO 500 P.S.I.G. SUFFICIENT TO MAINTAIN THE REACTANTA IN THE LIQUID PHASE FOR ABOUT 5 TO 20 MINUTES, AND RECOVERING GLYCERINE FROM THE RESULTING REACTION MIXTURE.
References Cited (Backward Citations)
US1875312A
Cited
US2227948A
Cited
US1477113A
Cited
US2318032A
Cited
FR903256A
Cited
US2605293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |