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US3054781A Expired / Lapsed US ⏱️ 0.0 years remaining

Thiosulfate process of making organic polysulfides

Assignee: Hexion Inc
•
Filing: 1959-03-24
•
Granted: 1962-09-18
•
Expires: 1979-03-24
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Abstract

No abstract record available.

Inventors

  • 👤 Kwan C Tsou

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 17:19
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/14; C08G75/16; C07; C07C; C07C381/00; C07C381/02

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 200 words
IN MAKING AN ORGANIC POLYSULFIDE THE PROCESS WHICH COMPRISES SUBJECTING THE ORGANIC THIOSULFATE PRODUCT OF REACTION OF A THIOSULFATE SELECTED FROM THE GROUP CONSISTING OF LITHIUM, SODIUM, POTASSIUM AND AMMONIUM THIOSULFATES IN AQUEOUS SOLUTION WITH A DIHALDIE OF THE FORMULA X-R-X TO THE ACTION OF A CONDENSING AGENT AT A PH BELOW AND A TEMPERATURE NOT ABOUVE THE BOILING POINT OF THE SOLUTION UNTIL THE REACTION IS SUBSTANTIALLY COMPLETED, MIXING THE RESULTING PRODUCT WITH ELEMENTAL SULFUR, AND THEN MELTING THE SAID MIXTURE, X IN THE FORMULA REPRESENTING AN ATOM OF A HALOGEN AND R A COMPONENT SELECTED FROM THE GROUP CONSISTING OF C1-C8 ALKYLENE RADICALS, C8-C10 BIVALENT AROMATIC HYDROCARBON RADICALS AND OXY AND HALOGEN SUBSTITUTION PRODUCTS OF THE SAID RADICALS, THE CONDENSING AGENT BEING SELECTED FROM THE GROUP CONSISTING OF COMPOUND OF THE FORMULA R''OOH IN WHICH R'' IS SELECTED FORM THE CLASS CONSISTING OF HYDROGEN, C1-C8 ALKYL, ARYL RADICALS, ALIPHATIC ACYL AND AROMATIC ACYL RADICALS, MIXED NITROUS ACIDAND IODINE, ALKALI METAL AND AMMONIUM PERSULFATES, ELEMENTAL OXYGEN, ADN ELEMENTAL OXYGEN IN CONTACT WITH FERROUS ION AND THE SAID CONDENSING AGENT BEING USED IN PROPORTION PROVIDING ABOUT 1 ATOM OF AVAILABLE OXYGEN FOR EACH THIOSULFATE RADICAL IN THE SAID ORGANIC THIOSULFATE.
Claim 2
Dependent Claim 200 words
IN MAKING AN ORGANIC POLYSULFIDE THE PROCESS WHICH COMPRISES SUBJECTING THE ORGANIC THIOSULFATE PRODUCT OF REACTION OF A THIOSULFATE SELECTED FROM THE GROUP CONSISTING OF LITHIUM, SODIUM, POTASSIUM AND AMMONIUM THIOSULFATES IN AQUEOUS SOLUTION WITH A DIHALDIE OF THE FORMULA X-R-X TO THE ACTION OF A CONDENSING AGENT AT A PH BELOW AND A TEMPERATURE NOT ABOUVE THE BOILING POINT OF THE SOLUTION UNTIL THE REACTION IS SUBSTANTIALLY COMPLETED, MIXING THE RESULTING PRODUCT WITH ELEMENTAL SULFUR, AND THEN MELTING THE SAID MIXTURE, X IN THE FORMULA REPRESENTING AN ATOM OF A HALOGEN AND R A COMPONENT SELECTED FROM THE GROUP CONSISTING OF C1-C8 ALKYLENE RADICALS, C8-C10 BIVALENT AROMATIC HYDROCARBON RADICALS AND OXY AND HALOGEN SUBSTITUTION PRODUCTS OF THE SAID RADICALS, THE CONDENSING AGENT BEING SELECTED FROM THE GROUP CONSISTING OF COMPOUND OF THE FORMULA R''OOH IN WHICH R'' IS SELECTED FORM THE CLASS CONSISTING OF HYDROGEN, C1-C8 ALKYL, ARYL RADICALS, ALIPHATIC ACYL AND AROMATIC ACYL RADICALS, MIXED NITROUS ACIDAND IODINE, ALKALI METAL AND AMMONIUM PERSULFATES, ELEMENTAL OXYGEN, ADN ELEMENTAL OXYGEN IN CONTACT WITH FERROUS ION AND THE SAID CONDENSING AGENT BEING USED IN PROPORTION PROVIDING ABOUT 1 ATOM OF AVAILABLE OXYGEN FOR EACH THIOSULFATE RADICAL IN THE SAID ORGANIC THIOSULFATE.

References Cited (Backward Citations)

US2278127A Cited
US2418938A Cited
US2676165A Cited
US2875182A Cited
US2925372A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1965-09-17 1966-03-19 1966-09-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1969-09-17 1970-03-19 1970-09-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1973-09-17 1974-03-19 1974-09-18 $7700.00 Window Closed / Lapsed

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