Claims
- 1. An additive for lubricating oils, said additive comprising a dispersion of a basic or neutral calcium sulfonate in a diluent oil, said additive having a maximum total base number of 50 mg. KOH/g, a maximum kinematic viscosity at 100.degree. C. of 65 cST and a maximum chloride content of 100 ppm.
- 2. The additive of claim 1, wherein said total base number is about 25 to about 40 mg. KOH/g.
- 3. The additive of claim 1, wherein said maximum kinematic viscosity at 100.degree. C. is less than or equal to 50 cST.
- 4. The additive of claim 1, wherein said kinematic viscosity at 100.degree. C. is about 30 to about 65 cST.
- 5. The additve of claim 1, wherein said maximum chloride content is 50 ppm.
- 6. The additive of claim 2, having a maximum haze value of 6.0 NTU.
- 7. The additive of claim 6, wherein said maximum haze value is 3.0 NTU.
- 8. The additive of claim 2, wherein said additive is basic and further comprises calcium formate.
- 9. The additive of claim 8, wherein said calcium sulfonate is a reaction product of sulphonic acid and a basic hydroxide, oxide or mixture thereof, and a contribution to the total base number made by said calcium formate is greater than that made by any unreacted hydroxide, oxide or a mixture thereof.
- 10. A lubricating oil composition comprising a basestock oil and the additve of claim 12.
Priority Claims (1)
Number |
Date |
Country |
Kind |
9217350 |
Aug 1992 |
GBX |
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Parent Case Info
This is a division of application Ser. No. 08/381,972 filed Apr. 6, 1995 now U.S. Pat. No. 5,684,181.
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Divisions (1)
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Number |
Date |
Country |
Parent |
381972 |
Apr 1995 |
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