Patent US3494571A successfully refreshed from Google Patents.
Patent US2575290A successfully refreshed from Google Patents.
US2575290A
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Continuous process for manufacture of perchloromethyl mercaptan
Assignee: Standard Oil Development Co
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Filing: 1949-08-04
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Granted: 1951-11-13
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Expires: 1969-08-04
Abstract
No abstract record available.
Inventors
- 👤 Ernest O Ohsol
- 👤 Carl S Carlson
- 👤 Jr Boyd E Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:07
CPC Classifications
C; C07; C07C; C07C313/00; C07C313/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A PROCESS FOR THE CONTINUOUS PREPARATION OF PERCHLOROMETHYL MERCAPTAN WHICH COMPRISES THE STEPS OF REACTING CARBON DISULFIDE AND CHLORIDE IN A REACTION ZONE AT A TEMPERATURE IN THE RANGE OF 0*-15* C., THE CARBON DISULFIDE BEING PRESENT IN AN AMOUNT OF 11/2 MOLE TO 2 MOLES PER 3 MOLES OF CHLORINE; WITHDRAWING THE RESULTING PREDOMINANTLY LIQUID REACTION MIXTURE TO A FIRST DISTILLATION ZONE; QUICKLY REMOVING AT SUBATMOSPHERIC PRESSURE FROM SAID FIRST DISTILLATION ZONE A VAPOROUS MIXTURE OF CARBON TETRACHLORIDE, SCI12, CARBON DISULFIDE, AND TRACES OF CHLORINE; RAPIDLY SEPARATING THE CARBON DISULFIDE AND CHLORINE FROM THE VAPOROUS MIXTURE TAKEN OFF FROM THE FIRST DISTILLATION ZONE IN A SECOND DISTILLATION ZONE; COOLING AND CONDENSING EFFLUENT VAPORS FROM THE SECOND DISTILLATION ZONE TO FORM A CARBON DISULFIDE CONDENSATE CONTAINING SOME DISSOLVED CHLORINE; RECYCLING A PORTION OF SAID CARBON DISULFIDE CONDENSATE TO THE REACTION ZONE; REFLUXING A RESIDUAL PORTION OF THE CONDENSATE TO THE SECOND DISTILLATION ZONE; WITHDRAWING A LIQUID BOTTOMS MIXTURE COMPRIS-
Claim 2
Dependent Claim
159 words
A PROCESS FOR THE CONTINUOUS PREPARATION OF PERCHLOROMETHYL MERCAPTAN WHICH COMPRISES THE STEPS OF REACTING CARBON DISULFIDE AND CHLORIDE IN A REACTION ZONE AT A TEMPERATURE IN THE RANGE OF 0*-15* C., THE CARBON DISULFIDE BEING PRESENT IN AN AMOUNT OF 11/2 MOLE TO 2 MOLES PER 3 MOLES OF CHLORINE; WITHDRAWING THE RESULTING PREDOMINANTLY LIQUID REACTION MIXTURE TO A FIRST DISTILLATION ZONE; QUICKLY REMOVING AT SUBATMOSPHERIC PRESSURE FROM SAID FIRST DISTILLATION ZONE A VAPOROUS MIXTURE OF CARBON TETRACHLORIDE, SCI12, CARBON DISULFIDE, AND TRACES OF CHLORINE; RAPIDLY SEPARATING THE CARBON DISULFIDE AND CHLORINE FROM THE VAPOROUS MIXTURE TAKEN OFF FROM THE FIRST DISTILLATION ZONE IN A SECOND DISTILLATION ZONE; COOLING AND CONDENSING EFFLUENT VAPORS FROM THE SECOND DISTILLATION ZONE TO FORM A CARBON DISULFIDE CONDENSATE CONTAINING SOME DISSOLVED CHLORINE; RECYCLING A PORTION OF SAID CARBON DISULFIDE CONDENSATE TO THE REACTION ZONE; REFLUXING A RESIDUAL PORTION OF THE CONDENSATE TO THE SECOND DISTILLATION ZONE; WITHDRAWING A LIQUID BOTTOMS MIXTURE COMPRIS-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |