Lubricant including water dispersible base

a technology of dispersible base and lubricant, which is applied in the field of lubricant oils, can solve the problems of cylinder wall and piston ring wear, and achieve the effects of reducing the cost of formulation, high temperature detergency, and improving the efficiency of marine cylinder lubrican
US20040248747A1Inactive Publication Date: 2004-12-09THE LUBRIZOL CORP
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
THE LUBRIZOL CORP
Publication Date
2004-12-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

A lubricant in the form of an oil-insoluble solvent e.g. water in oil emulsion is described where a water soluble or water dispersible base is present in the dispersed phase. These lubricants are beneficial in various applications such as internal combustion engines where the oil desirable has enough basicity to neutralize any inorganic acids generated by sulfur present in the fuel.
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Description

[0001] Lubricants with excess basicity, characterized as total base number (TBN) are used as lubricants in internal combustion engines where atoms such as sulfur, nitrogen and carbon generate acidic combustion products that cause additional wear. In the past the overbased components where bases were reacted in the oil phase with gases like CO.sub.2 contributed basicity. Water soluble or water dispersible bases can offer more neutralization capacity on a weight basis. The bases can be incorporated into an emulsified water phase.BACKGROUND OF INVENTION

[0002] A variety of lubricant oils are available having various total base numbers. One reason for having a total base number above zero in a lubricant is that acidic products are more likely to cause corrosion and wear to metal parts of a device than bases, which tend not to be involved in corrosion. Thus lubricants are formulated with sufficient excess base that over their intended lifetime, they remain neutral or slightly basic.

[0003] ...

Claims

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