US3030410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of oil soluble sulfonates
Assignee: Atlantic Richfield Co
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Filing: 1959-07-22
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Granted: 1962-04-17
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Expires: 1979-07-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Woodbridge
- 👤 Frederick R Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:36
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/62; C10; C10M; C10M135/00; C10M135/08; C10M135/10; C10M2219/00; C10M2219/04; C10M2219/044; C10N; C10N2030/00; C10N2030/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN A PROCESS FOR PREPARING OIL SOLUBLE SULFONATES HAVING A SUBSTANTIALLY REDUCED INORGANIC SALT CONTENT INCLUDING THE STEPS OF SULFONATING AN OIL HAVING A MOLECULAR WEIGHT GREATER THAN 340 SELECTED FROM THE GROUP CONSISTING OF A NAPHTHENIC DISTILLATE OIL AND A POLYALKYLATED BENZENE WITH A SULFONATING AGENT SELECTED FROM THE GROUP CONSISTING OF CONCENTRATED SULFURIC ACID AND FUMING SULFURIC ACID, NEUTRALIZING THE PRODUCED OIL SOLUBLE SULFONIC ACIDS WITH AN ALKALI METAL HYDROXIDE, DESALTING THE NEUTRALIZED OIL SOLUBLE ALKALI METAL SULFONATES WITH A WATER MISCIBLE SOLVENT, FILTERING TO REMOVE THE PRECIPITATED INORGANIC SALT AND REMOVING THE SOLVENT TO OBTAIN AN ESSENTIALLY PURE OIL SOLUBLE ALKALI METAL SULFONATE, THE IMPROVEMENT OF NEUTRALIZING THE OIL SOLUBLE SULFONIC ACIDS WITH A STOICHOMETRIC AMOUNT OF AN ALKALI METAL HYDROXIDE AND HEATING THE NEUTRAL OIL SOLUBLE ALKALI METAL SULFONATES UNDER ESSENTIALLY ANHYDROUS CONDITIONS AT A TEMPERATURE BETWEEN ABOUT 120*C. AND ABOUT 150*C.
Claim 2
Dependent Claim
146 words
IN A PROCESS FOR PREPARING OIL SOLUBLE SULFONATES HAVING A SUBSTANTIALLY REDUCED INORGANIC SALT CONTENT INCLUDING THE STEPS OF SULFONATING AN OIL HAVING A MOLECULAR WEIGHT GREATER THAN 340 SELECTED FROM THE GROUP CONSISTING OF A NAPHTHENIC DISTILLATE OIL AND A POLYALKYLATED BENZENE WITH A SULFONATING AGENT SELECTED FROM THE GROUP CONSISTING OF CONCENTRATED SULFURIC ACID AND FUMING SULFURIC ACID, NEUTRALIZING THE PRODUCED OIL SOLUBLE SULFONIC ACIDS WITH AN ALKALI METAL HYDROXIDE, DESALTING THE NEUTRALIZED OIL SOLUBLE ALKALI METAL SULFONATES WITH A WATER MISCIBLE SOLVENT, FILTERING TO REMOVE THE PRECIPITATED INORGANIC SALT AND REMOVING THE SOLVENT TO OBTAIN AN ESSENTIALLY PURE OIL SOLUBLE ALKALI METAL SULFONATE, THE IMPROVEMENT OF NEUTRALIZING THE OIL SOLUBLE SULFONIC ACIDS WITH A STOICHOMETRIC AMOUNT OF AN ALKALI METAL HYDROXIDE AND HEATING THE NEUTRAL OIL SOLUBLE ALKALI METAL SULFONATES UNDER ESSENTIALLY ANHYDROUS CONDITIONS AT A TEMPERATURE BETWEEN ABOUT 120*C. AND ABOUT 150*C.
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) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |