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
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)
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 |