US2838575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of glycerine by hydroxylation of allyl alcohol
Assignee: Shell Development Co
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Filing: 1956-05-03
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Granted: 1958-06-10
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Expires: 1976-05-03
Abstract
No abstract record available.
Inventors
- 👤 Curtis W Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:28
CPC Classifications
C; C11; C11D; C11D19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PROCESS OF PRODUCING GLYCERINE WHICH COMPRISES REACTING ALLY ALCOHOL WITH HYDROGEN PEROXIDE IN THE PRESENCE OF A CATALYST OF THE GROUP CONSISTING OF TUNGSTIC ACID (H2WO4) AND WATER-SOLUBLE SALTS THEREOF USING A FEED CONTAINING AN EXCESS OF ALLY ALCOHOL TO PEROXIDE, WATER AND SAID CATALYST AND MAINTAINING THE REACTION MIXTURE WITHIN THE RANGE OF 40* TO 60*C. UNTIL AT LEAST 95% OF THE HYDROGEN PEROXIDE HAS REACTED, THEN HEATING THE REACTION MIXTURE AT A TEMPERATURE SUBSTANTIALLY HIGHER THAN 60*C. AND RECOVERING THE GLYCERINE PRODUCED.
Claim 2
Dependent Claim
85 words
A PROCESS OF PRODUCING GLYCERINE WHICH COMPRISES REACTING ALLY ALCOHOL WITH HYDROGEN PEROXIDE IN THE PRESENCE OF A CATALYST OF THE GROUP CONSISTING OF TUNGSTIC ACID (H2WO4) AND WATER-SOLUBLE SALTS THEREOF USING A FEED CONTAINING AN EXCESS OF ALLY ALCOHOL TO PEROXIDE, WATER AND SAID CATALYST AND MAINTAINING THE REACTION MIXTURE WITHIN THE RANGE OF 40* TO 60*C. UNTIL AT LEAST 95% OF THE HYDROGEN PEROXIDE HAS REACTED, THEN HEATING THE REACTION MIXTURE AT A TEMPERATURE SUBSTANTIALLY HIGHER THAN 60*C. AND RECOVERING THE GLYCERINE PRODUCED.
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) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |