US2931822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the continuous production of sulfuric acid esters
Assignee: Henkel AG and Co KGaA
•
Filing: 1955-06-20
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Granted: 1960-04-05
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Expires: 1975-06-20
Abstract
No abstract record available.
Inventors
- 👤 Tischbirek Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:14
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
THE PROCESS OF CONTINUOUSLY PRODUCING SULFURIC ACID ESTERS OF HIGHER SLIPHATIC ORGANIC COMPOUNDS CONTAINING ALCOHOLIC GROUPS WHICH COMPRISES CONTINUOUSLY AND INTIMATELY ADMIXING SAID ORGANIC COMPOUNDS WITH CHLOROSULFONIC ACID, CONTINUOUSLY PASSING SAID MIXTURE AT HIGH VELOCITY THROUGH A RELATIVELY NARROW REACTION SPACE NOT GREATER THAN ABOUT 1 CM. IN WITDTH WITHIN A PERIOD OF LESS THAN 2 MINUTES, COOLING SAID MIXTURE WHILE IN SAID REACTION SPACE TO A TEMPERATURE SLIGHTLY ABOVE THE MELTING POINT OF THE ALIPHATIC COMPOUND, CONTINUOUSLY WITHDRAWING THE RESULTING REACTION PRODUCTS FROM SAID REACTION SPACE, AND CONTINUOUSLY SEPARATING THE GASEOUS REACTION PRODUCT FROM THE LIQUID REACTION PRODUCTS.
Claim 2
Dependent Claim
99 words
THE PROCESS OF CONTINUOUSLY PRODUCING SULFURIC ACID ESTERS OF HIGHER SLIPHATIC ORGANIC COMPOUNDS CONTAINING ALCOHOLIC GROUPS WHICH COMPRISES CONTINUOUSLY AND INTIMATELY ADMIXING SAID ORGANIC COMPOUNDS WITH CHLOROSULFONIC ACID, CONTINUOUSLY PASSING SAID MIXTURE AT HIGH VELOCITY THROUGH A RELATIVELY NARROW REACTION SPACE NOT GREATER THAN ABOUT 1 CM. IN WITDTH WITHIN A PERIOD OF LESS THAN 2 MINUTES, COOLING SAID MIXTURE WHILE IN SAID REACTION SPACE TO A TEMPERATURE SLIGHTLY ABOVE THE MELTING POINT OF THE ALIPHATIC COMPOUND, CONTINUOUSLY WITHDRAWING THE RESULTING REACTION PRODUCTS FROM SAID REACTION SPACE, AND CONTINUOUSLY SEPARATING THE GASEOUS REACTION PRODUCT FROM THE LIQUID REACTION PRODUCTS.
References Cited (Backward Citations)
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Cited
US2326270A
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US2395777A
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US2453837A
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US2673211A
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US2771484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |