US4288336A
Expired / Lapsed
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Process for preparing overbased alkaline earth metal sulfonates
Assignee: Chevron USA Inc
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Filing: 1980-08-28
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Granted: 1981-09-08
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Expires: 2000-08-28
Abstract
Abstract Disclosed is a process for the preparation of an overbased alkaline earth metal sulfonate in which the overbasing is carried out in the presence of a solution of sugar.
Inventors
- 👤 Garth M. Stanton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:20
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/20; C10M159/24
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
57 words
In a process for the preparation of an overbased alkaline earth metal sulfonate in which a mixture of a hydrocarbyl sulfonic acid or neutral sulfonate in an organic solvent comprising a mineral oil, is overbased with an akaline earth metal base, the improvement comprising carrying out said overbasing in the presence of a solution of a sugar.
Claim 2
Dependent Claim
57 words
In a process for the preparation of an overbased alkaline earth metal sulfonate in which a mixture of a hydrocarbyl sulfonic acid or neutral sulfonate in an organic solvent comprising a mineral oil, is overbased with an akaline earth metal base, the improvement comprising carrying out said overbasing in the presence of a solution of a sugar.
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein said solution is an aqueous sugar solution.
Claim 4
Dependent Claim
14 words
The process of claim 2 wherein said alkaline earth metal is calcium or barium.
Claim 5
Dependent Claim
13 words
The process of claim 3 wherein said sugar is glucose, galactose, or fructose.
Claim 6
Dependent Claim
10 words
The process of claim 3 wherein said sugar is sucrose.
Claim 7
Dependent Claim
13 words
The products prepared by the process of claim 1, 2, 3, or 4.
Claim 8
Dependent Claim
23 words
A lubricating oil composition comprising an oil of lubricating viscosity and an effective amount as a dispersant of the product of claim 5.
Claim 9
Dependent Claim
23 words
A lubricating oil concentrate containing an oil of lubricating viscosity and from 1 to 80% by weight of the product of claim 5.
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) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |