US2528320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous photochemical preparation of aliphatic sulfonyl chlorides
Assignee: EIDP Inc
•
Filing: 1946-07-31
•
Granted: 1950-10-31
•
Expires: 1966-07-31
Abstract
No abstract record available.
Inventors
- 👤 Roberts John Burnham
- 👤 Gage Hugh Buchanan
- 👤 Brautcheck Charles Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:51
CPC Classifications
C; C07; C07C; C07C309/00; Y; Y10; Y10S; Y10S204/00; Y10S204/902; Y10S204/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A PROCESS FOR REACTING A LIQUID, SATURATED, ALIPHATIC COMPOUND WITH SULFUR DIOXIDE AND CHLORINE TO PRODUCE A SULFONYL-CHLORIDE DERIVATIVES OF SAID ALIPHATIC COMPOUND, WHICH COMPRISES PASSING CONTINUOUSLY A MIXTURE OF SAID LIQUID ALIPHATIC COMPOUND AND OF GASEOUS SULFUR DIOXIDE AND CHLORINE CO-CURRENTLY THROUGH A SUBSTANTIALLY HORIZONTAL, TRANSPARENT TUBE, WHILE IRRADIATING THE TUBE WITH ACTINIC LIGHT, THE PROPORTION OF THE COMBINED WEIGHT OF GASES TO WEIGHT OF LIQUID BEING FED THROUGH THE APPARATUS BEING NOT LESS THAN 0.58:1, AND THE RATE OF FEED OF SAID REACTION MASS INTO SAID TUBE BEING SUFFICIENTLY HIGH TO CAUSE SAID LIQUID TO BE PROPELLED THROUGH THE TUBE BY SAID GASES AND TO GIVE THE REACTION MASS AT THE OUTLET A SUPERFICIAL GAS VELOCITY OF NOT LESS THAN 10 FEET PER SECOND, THE REACTION MASS INSIDE THE TUBE BEING MAINTAINED IN A STATE OF TURBANNULAR FLOW AS IT MOVES THROUGH THE TUBE.
Claim 2
Dependent Claim
146 words
A PROCESS FOR REACTING A LIQUID, SATURATED, ALIPHATIC COMPOUND WITH SULFUR DIOXIDE AND CHLORINE TO PRODUCE A SULFONYL-CHLORIDE DERIVATIVES OF SAID ALIPHATIC COMPOUND, WHICH COMPRISES PASSING CONTINUOUSLY A MIXTURE OF SAID LIQUID ALIPHATIC COMPOUND AND OF GASEOUS SULFUR DIOXIDE AND CHLORINE CO-CURRENTLY THROUGH A SUBSTANTIALLY HORIZONTAL, TRANSPARENT TUBE, WHILE IRRADIATING THE TUBE WITH ACTINIC LIGHT, THE PROPORTION OF THE COMBINED WEIGHT OF GASES TO WEIGHT OF LIQUID BEING FED THROUGH THE APPARATUS BEING NOT LESS THAN 0.58:1, AND THE RATE OF FEED OF SAID REACTION MASS INTO SAID TUBE BEING SUFFICIENTLY HIGH TO CAUSE SAID LIQUID TO BE PROPELLED THROUGH THE TUBE BY SAID GASES AND TO GIVE THE REACTION MASS AT THE OUTLET A SUPERFICIAL GAS VELOCITY OF NOT LESS THAN 10 FEET PER SECOND, THE REACTION MASS INSIDE THE TUBE BEING MAINTAINED IN A STATE OF TURBANNULAR FLOW AS IT MOVES THROUGH THE TUBE.
References Cited (Backward Citations)
US2428733A
Cited
US2193824A
Cited
US2174492A
Cited
US2335259A
Cited
US2370786A
Cited
US2436366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |