Patent US2806056A successfully refreshed from Google Patents.
US2806056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of amino sulfonic acids
Assignee: Ruhrchemie AG
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Filing: 1953-06-17
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Granted: 1957-09-10
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Expires: 1973-06-17
Abstract
No abstract record available.
Inventors
- 👤 Feichtinger Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:49
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/13; C07C309/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
PROCESS FOR THE PRODUCTION OF AMINO SULFONIC ACIDS WHICH COMPRISES CONTACTING AN ALIPHATIC AMINE HYDROCHLORIDE WITH CHLORINE AND A SULFUR DIOXIDE CONTAINING GAS WHICH CONTAINS FROM 1 TO 3 PARTS BY VOLUME OF SULFUR DIOXIDE PER PART BY VOLUME OF CHLORINE AT A TEMPERATURE OF 10-80*C. IN THE PRESENCE OF CARBON TETRACHLORIDE, WHILE IRADIATING WITH ACTINIC LIGHT SEPARATING THE CHLORO-HYDROCARBON AND FORMED SULFURYL CHLORIDE FROM THE RESULTING SULFOCHLORINATION PRODUCT HYDROLYZING THE SULFOCHLORINATIO PRODUCT WITH WATER IN AMOUNT OF 5 TO 20 TIMES THE VOLUME OF THE SULFOCHLORINBATION PRODUCT AND RECOVERING THE AMINO SULFONIC ACID FOR MED BY EVAPORATING OFF HYDROGEN CHLORIDE AFTER SAID HYDROLYSIS AND PRECIPITATING RHTE RESIDUE WITH ABSOLUTE ALCOHOL.
Claim 2
Dependent Claim
111 words
PROCESS FOR THE PRODUCTION OF AMINO SULFONIC ACIDS WHICH COMPRISES CONTACTING AN ALIPHATIC AMINE HYDROCHLORIDE WITH CHLORINE AND A SULFUR DIOXIDE CONTAINING GAS WHICH CONTAINS FROM 1 TO 3 PARTS BY VOLUME OF SULFUR DIOXIDE PER PART BY VOLUME OF CHLORINE AT A TEMPERATURE OF 10-80*C. IN THE PRESENCE OF CARBON TETRACHLORIDE, WHILE IRADIATING WITH ACTINIC LIGHT SEPARATING THE CHLORO-HYDROCARBON AND FORMED SULFURYL CHLORIDE FROM THE RESULTING SULFOCHLORINATION PRODUCT HYDROLYZING THE SULFOCHLORINATIO PRODUCT WITH WATER IN AMOUNT OF 5 TO 20 TIMES THE VOLUME OF THE SULFOCHLORINBATION PRODUCT AND RECOVERING THE AMINO SULFONIC ACID FOR MED BY EVAPORATING OFF HYDROGEN CHLORIDE AFTER SAID HYDROLYSIS AND PRECIPITATING RHTE RESIDUE WITH ABSOLUTE ALCOHOL.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |