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Emulsion Composition

Inactive Publication Date: 2008-08-28
THE LUBRIZOL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009]The present invention provides an emulsion composition comprising: (a) a first phase comprising: (i) an oil soluble inert medium; and (ii) an emulsifier capable of forming a water-in-oil emulsion; and (b) a second phase comprises: (i) a metal base; (ii) an aqueous medium; and (iii) optionally a compound containing two or more hydroxyl groups, wherein a base in the form of an alkali metal or an alkaline earth metal oxide, hydroxide, carbonate, bicarbonate; or combinations thereof; and wherein the emulsion composition has a flow rate through a 45 μm filter of more than 8 ml/min in a filterability test carried out at ambient temperature and 45 kPa applied vacuum; wherein the filter has diameter of 5 cm and a mesh size of about 45 μm; and wherein the oil soluble inert medium in the filtration test is an oil of lubricating viscosity of a SA

Problems solved by technology

Due to the high amount of sulphur containing species in the economical residual fuel, the combustion products include high amount of acidic SOx which causes additional wear to the cylinder wall and the rings of the piston.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

examples 1 to 16 and reference examples 1 and 2

[0116]An emulsion composition is prepared by blending a milk of lime with a solids content as shown in Table 1; 1.2 wt % of a hydrocarbyl substituted carboxylic acid acylating agent emulsifier; 0.01 wt % of an antifoam agent; 0.5 wt % of a dispersant; and 3.8 wt % of a mixture of an overbased and a neutral detergent, optionally a compound containing 2 or more hydroxyl groups present at 1 wt % or 2 wt % as shown in Table 1; and the balance of the emulsion composition is an oil of lubricating viscosity.

TABLE 1MilkHydroxyof LimeHydroxyCompoundSolidsExampleCompound(wt %)Milk of LimeContentREF 1None—Precal 7219.1REF 2None—Wolfrasorp DSP23.8EX 1None—Lhoist low TSA18.1EX 2Sorbitol0.43Lhoist low TSA18.7EX 3Ethylene Glycol1Lhoist low TSA19EX 4Ethylene Glycol2Lhoist low TSA19EX 5Glycerol1Lhoist low TSA19EX 6Glycerol2Lhoist low TSA19EX 7Sorbitol1Lhoist low TSA25EX 8Sorbitol2Lhoist low TSA25EX 9Sorbitol0.43Precal 7220.3EX 10Ethylene Glycol1Precal 7220.3EX 11Ethylene Glycol2Precal 7220.3EX 12Gly...

reference example 3 (

REF3) is the same as Reference Example 1, except the formulation has been stored for 2 weeks.

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PUM

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Abstract

The present invention provides an emulsion composition containing (a) a first phase with (i) an oil soluble inert medium; and (ii) an emulsifier capable of forming a water-in-oil emulsion; and (b) a second phase with (i) a metal base; (ii) an aqueous medium; and (iii) optionally a compound containing two or more hydroxyl groups, wherein a base in the form of an alkali metal or an alkaline earth metal oxide, hydroxide, carbonate, bicarbonate; or combinations thereof; and wherein the emulsion composition has a flow rate through a 45 μm filter of more than 8 ml / min in a filterability test carried out at ambient temperature and 45 kPa applied vacuum; wherein the filter has diameter of 5 cm and a mesh size of about 45 μm; and wherein the oil soluble inert medium in the filtration test is an oil of lubricating viscosity of a SAE 50 base oil. The invention further provides a method of preparing the emulsion composition and its use in a marine engine.

Description

CROSS REFERENCE[0001]This application claims priority from U.S. Patent Application Ser. No. 60 / 643,681 filed on Jan. 13, 2005.FIELD OF INVENTION[0002]The present invention relates to an emulsion composition containing an inert medium, a metal base, an emulsifier, an aqueous base and optionally a compound containing 2 or more hydroxyl groups. The invention further discloses the use of an emulsion composition in an internal combustion engine.BACKGROUND OF THE INVENTION[0003]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.[0004]One particular use of a lubricant with a high total base number is in marine diesel a...

Claims

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Application Information

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IPC IPC(8): C10M103/00
CPCC10L1/328C10N2240/102C10M2201/02C10M2201/062C10M2207/022C10M2207/121C10M2207/123C10M2207/125C10M2207/127C10M2207/129C10M2215/086C10M2215/28C10N2210/01C10N2210/02C10N2220/02C10N2230/04C10N2230/06C10N2230/12C10M173/00C10N2010/02C10N2010/04C10N2030/04C10N2030/06C10N2030/12C10N2020/01C10N2040/252
Inventor STARTIN, SARAH J.SHARMA, GURUMAYUM SHACHI DAYALHOBSON, DAVIDMAYHEW, ALEXANDRACOOK, STEPHEN J.
Owner THE LUBRIZOL CORP
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