Patent US2709155A successfully refreshed from Google Patents.
US2709155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photochemical sulfo-chlorination
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1952-11-12
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Granted: 1955-05-24
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Expires: 1972-11-12
Abstract
No abstract record available.
Inventors
- 👤 Harry E Cier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:40
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/02; C07C303/04; C07C303/10; Y; Y10; Y10S; Y10S204/00; Y10S204/902; Y10S204/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A METHOD OF CONDUCTING A PHOTOCHEMICAL REACTION WHICH COMPRISES INTRODUCING HYDROCARBON FEED STOCK, SULFUR DIOXIDE AND CHLORINE INTO A PHOTOCHEMICAL REACTION ZONE, FORMING HYDROCARBON SULFONYL PRODUCT THEREIN AND REMOVING SAID HYDROCARBON SULFONYL PRODUCT, SULFUR DIOXIDE, CHLORIDE, AND HYDROGEN CHLORIDE FROM SAID PHOTOCHEMICAL REACTION ZONE AND REMOVING THERFROM A GASEOUS MIXTURE OF SULFUR DIOXIDE, CHLORINE AND HYDROGEN CHLORIDE, CONTRACTING SAID GASEOUS MIXTURE WITH FRESH HYDROCARBON FEED STOCK BOILING IN HTE RANGE FROM 100* TO 1200* F. IN AN ABSORPITON ZONE AT A TEMPERATURE WITHIN THE RANGE FROM 75* TO 225* F. AT A PRESSURE NO NO GREATER THAN THE VAPOR PRESSURE OF SULFUR DIOXIDE AT THE TEMPERATURE OF SAID ABSORPTION ZONE UNDER CONDITIONS TO ABSORB SELECTIVELY SAID SULFUR DIOXIDE AND CHLORINE IN SAID HYDROCARBON IN SAID ABSROPTION ZONE, RECOVERING HYDROGEN CHLORIDE FROM SAID ABSORPTON ZONE, AND THEN REACTING IN SAID REACTION ZONE IN TE PRESENCE OF LIGHT SAID HYDROCARBON CONTAINING ABSROBED SULFUR DIOXIDE AND CHLORINE TO PRODUCE AND HYDROCARBONB SULFONYL CHLORIDE PRODUCT AND SAID GASEOUS MIXTURE.
Claim 2
Independent Claim
165 words
A METHOD OF CONDUCTING A PHOTOCHEMICAL REACTION WHICH COMPRISES INTRODUCING HYDROCARBON FEED STOCK, SULFUR DIOXIDE AND CHLORINE INTO A PHOTOCHEMICAL REACTION ZONE, FORMING HYDROCARBON SULFONYL PRODUCT THEREIN AND REMOVING SAID HYDROCARBON SULFONYL PRODUCT, SULFUR DIOXIDE, CHLORIDE, AND HYDROGEN CHLORIDE FROM SAID PHOTOCHEMICAL REACTION ZONE AND REMOVING THERFROM A GASEOUS MIXTURE OF SULFUR DIOXIDE, CHLORINE AND HYDROGEN CHLORIDE, CONTRACTING SAID GASEOUS MIXTURE WITH FRESH HYDROCARBON FEED STOCK BOILING IN HTE RANGE FROM 100* TO 1200* F. IN AN ABSORPITON ZONE AT A TEMPERATURE WITHIN THE RANGE FROM 75* TO 225* F. AT A PRESSURE NO NO GREATER THAN THE VAPOR PRESSURE OF SULFUR DIOXIDE AT THE TEMPERATURE OF SAID ABSORPTION ZONE UNDER CONDITIONS TO ABSORB SELECTIVELY SAID SULFUR DIOXIDE AND CHLORINE IN SAID HYDROCARBON IN SAID ABSROPTION ZONE, RECOVERING HYDROGEN CHLORIDE FROM SAID ABSORPTON ZONE, AND THEN REACTING IN SAID REACTION ZONE IN TE PRESENCE OF LIGHT SAID HYDROCARBON CONTAINING ABSROBED SULFUR DIOXIDE AND CHLORINE TO PRODUCE AND HYDROCARBONB SULFONYL CHLORIDE PRODUCT AND SAID GASEOUS MIXTURE.
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) | 1958-05-23 | 1958-11-22 | 1959-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-23 | 1962-11-22 | 1963-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-23 | 1966-11-22 | 1967-05-24 | $7700.00 | Window Closed / Lapsed |