US2902448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of organic calcium sulfonates
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1955-07-20
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Granted: 1959-09-01
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Expires: 1975-07-20
Abstract
No abstract record available.
Inventors
- 👤 John F Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:24
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/20; C10M159/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A PROCESS OF PRODUCING A HYDROCARBON OIL SOLUTION OF BASIC CALCIUM HYDROCARBON SULFONATES, THE IMPROVEMENT WHICH COMPRISES SIMULTANEOUSLY REACTING A 30 TO 50 WT. PERCENT SOLUTION OF SODIUM SULFONATES IN OIL WITH ADMIXED CALCIUM CHLORIDE BRINE HAVING A CALCIUM CHLORIDE CONCENTRATION OF ABOUT 30 TO 40 WT. PERCENT IN A RATIO OF ABOUT 1.0 TO 1.2 MOLES CALCIUM CHLORIDE PER MOLE OF SODIUM SULFONATES AND DRY CALCIUM HYDROXIDE IN A RATIO OF 0.5 TO 1.0 MOLES OF CALCIUM HYDROXIDE PER MOLE OF SODIUM SULFONATES AT A TEMPERATURE IN THE RANGE OF ABOUT 30* TO 150*C. UNTIL THE CONVERSION OF SODIUM SULFONATES TO BASIC CALCIUM SULFONTES IS SUBSTANTIALLY COMPLETE AND THE RESULTING MIXTURE IS SUBSTANTIALLY DEHYDRATED, AND FILTERING THE RESULTING MIXTURE CONTAINING PRECIPITATED SODIUM CHLORIDE TO OBTAIN A FILTRATE OF BASIC CALCIUM SULFONATES IN HYDROCARBON OIL SOLUTION.
Claim 2
Dependent Claim
137 words
IN A PROCESS OF PRODUCING A HYDROCARBON OIL SOLUTION OF BASIC CALCIUM HYDROCARBON SULFONATES, THE IMPROVEMENT WHICH COMPRISES SIMULTANEOUSLY REACTING A 30 TO 50 WT. PERCENT SOLUTION OF SODIUM SULFONATES IN OIL WITH ADMIXED CALCIUM CHLORIDE BRINE HAVING A CALCIUM CHLORIDE CONCENTRATION OF ABOUT 30 TO 40 WT. PERCENT IN A RATIO OF ABOUT 1.0 TO 1.2 MOLES CALCIUM CHLORIDE PER MOLE OF SODIUM SULFONATES AND DRY CALCIUM HYDROXIDE IN A RATIO OF 0.5 TO 1.0 MOLES OF CALCIUM HYDROXIDE PER MOLE OF SODIUM SULFONATES AT A TEMPERATURE IN THE RANGE OF ABOUT 30* TO 150*C. UNTIL THE CONVERSION OF SODIUM SULFONATES TO BASIC CALCIUM SULFONTES IS SUBSTANTIALLY COMPLETE AND THE RESULTING MIXTURE IS SUBSTANTIALLY DEHYDRATED, AND FILTERING THE RESULTING MIXTURE CONTAINING PRECIPITATED SODIUM CHLORIDE TO OBTAIN A FILTRATE OF BASIC CALCIUM SULFONATES IN HYDROCARBON OIL SOLUTION.
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) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |