Lubricating grease composition

A technology of grease composition and mixture, applied in the directions of lubricating composition, thickener, petroleum industry, etc., can solve problems such as improvement of friction and corrosion performance not involved

Inactive Publication Date: 2008-01-23
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] But EP-A-1314774, EP-A-0767237 and EP-A-0761806 are not related to improving friction corrosion performance

Method used

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  • Lubricating grease composition
  • Lubricating grease composition
  • Lubricating grease composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0114] Grease compositions were obtained by mixing the thickener, base oil and additives shown in Table 1 in the proportions shown in Table 1 and heating.

[0115] Table 1 shows the results of measuring the penetration, dropping point (° C.) and anti-friction (room temperature) of the obtained grease composition.

[0116] Table 1

[0117] Example 1

Example 2

Example 3

Example 4

Example 5

thickener

Diurea compounds:

Aliphatic A

10

10

10

10

10

base oil

Mineral oil A

89

89

89

89

89

Additives

Mg-St

1

Ca-St

1

Ca-12(OH)St

1

Zn-St

1

Al-St

1

result

Penetration (dmm)

285

282

284

283

281

Dropping point, ℃

＞250

＞250

＞250

＞250

＞25...

Embodiment 6-13

[0133] Similar experiments were performed by varying the base oil. The results are shown in Table 4.

[0134] Table 4

[0135] Example 6

[0136] According to these results, when the diurea compound and zinc stearate or aluminum stearate were blended into the base oil, both had a great anti-friction and wear inhibitory effect, and the effect of the type of base oil on the anti-friction and wear inhibitory effect was observed Basically no effect.

[0137] Examples of Embodiments 14-17

[0138] Similar experiments were performed by varying the amount of thickener added. The results are shown in Table 5.

[0139] table 5

[0140] Example 14

[0141] According to these results, even when the grease consistency is hard, the anti-friction and wear suppression effect is extremely large.

Embodiment approach 18-29

[0142] Examples of Embodiments 18-29

[0143] A similar experiment was performed by changing the kind of thickener, and its effect was considered. The results are shown in Tables 6 and 7.

[0144] Table 6

[0145] Example

[0146] Table 7

[0147] Example

[0148] Even when the kind of the thickener composed of the urea compound was changed, the result did not change.

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Abstract

Use of a lubricating grease composition comprising: (D) base oil selected from mineral oil, synthetic oil or mixtures thereof; (E) one or more urea compounds; and (F) one or more metal salts of a fatty acid wherein the metal is selected from the group consisting of aluminium, magnesium, zinc, calcium and mixtures thereof, in order to reduce fretting corrosion.

Description

technical field [0001] The present invention relates to a grease composition having improved friction properties. Background technique [0002] Friction corrosion in grease lubrication is different from general chemical corrosion wear. It is a type of mechanical wear phenomenon. To suppress or prevent this phenomenon, many lubricant studies have been conducted. [0003] In general, the places where fretting corrosion is prone to occur are many and varied. It occurs not only in the wheel bearing area of ​​automobiles but also in different machine areas where two bodies such as splines, couplings, leaf springs and bearings are in contact and are subjected to slight vibrations or sliding relative to each other. [0004] A frictional situation is one in which microscopic vibrations or microscopic sliding occur between two bodies facing each other, and the abrasive dust generated by the microscopic vibrations between steel and steel becomes fine brown iron oxide powder in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M123/02C10M123/04C10M169/02C10M169/06C10N10/04C10N10/06C10N30/12C10N40/02C10N40/04C10N50/10
CPCC10N2240/042C10N2210/03C10M2207/125C10M2207/1285C10M2207/1225C10M2207/129C10N2240/04C10M2207/126C10M2207/106C10M2207/20C10N2250/10C10N2240/044C10M2215/102C10M2207/1276C10M2207/2835C10M2207/10C10M2207/124C10M2207/1236C10M2205/0285C10N2240/02C10N2240/046C10M2207/127C10M2207/18C10N2230/12C10M2215/1026C10M123/04C10M2203/1025C10M2207/0406C10M2207/206C10M2217/045C10M2207/1256C10M169/02C10M2207/122C10N2220/022C10M2207/121C10M2207/1245C10M2207/1265C10N2210/02C10M2207/2805C10M2207/128C10M2207/12C10N2240/045C10M2207/123C10M169/06C10M2217/0456C10M2207/186C10M2207/1216C10M2207/1206C10M123/02C10M2207/1296C10N2010/04C10N2010/06C10N2020/02C10N2030/12C10N2040/02C10N2040/04C10N2050/10C10N2040/042C10N2040/044C10N2040/045C10N2040/046
Inventor 加藤哲也田中启二沼泽幸一大村和重
Owner SHELL INT RES MAATSCHAPPIJ BV
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