US3248423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing alkyl sulfonyl chlorides
Assignee: Hooker Chemical Corp
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Filing: 1962-11-30
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Granted: 1966-04-26
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Expires: 1982-11-30
Abstract
No abstract record available.
Inventors
- 👤 George B Stratton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:15
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/02; C07C303/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A PROCESS FOR THE BATCH PREPARATION OF AN ALKYL SULFONYL CHLORIDE OF FOUR TO TWENTY CARBON ATOMS WHICH COMPRISES CHLORINATING R-S-Y, WHEREIN Y IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND -S-R'' AND R" AND R AND R'' ARE ALKYL GROUPS OF FOUR TO TWENTY CARBON ATOMS, BY BUBBLING THROUGH R-S-Y IN AQUEOUS MEDIUM AT A TEMPERATURE BETWEEN ABOUT -10 DEGREES AND 70 DEGREES CENTIGRADE, CHLORINE CONTAINING FROM 0.05 TO 5 PERCENT OF OXYGEN TO INHIBIT UNDERSIRABLE CHLORINATION OF THE ALKYL GROUP OF THE ALKYL SULFONYL CHLORIDE.
Claim 2
Dependent Claim
88 words
A PROCESS FOR THE BATCH PREPARATION OF AN ALKYL SULFONYL CHLORIDE OF FOUR TO TWENTY CARBON ATOMS WHICH COMPRISES CHLORINATING R-S-Y, WHEREIN Y IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND -S-R'' AND R" AND R AND R'' ARE ALKYL GROUPS OF FOUR TO TWENTY CARBON ATOMS, BY BUBBLING THROUGH R-S-Y IN AQUEOUS MEDIUM AT A TEMPERATURE BETWEEN ABOUT -10 DEGREES AND 70 DEGREES CENTIGRADE, CHLORINE CONTAINING FROM 0.05 TO 5 PERCENT OF OXYGEN TO INHIBIT UNDERSIRABLE CHLORINATION OF THE ALKYL GROUP OF THE ALKYL SULFONYL CHLORIDE.
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |