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Lubricating grease composition containing thiuram compound and preparation method thereof

A grease composition and compound technology, applied in the field of lithium-based grease, can solve problems such as poor effect, and achieve the effects of good extreme pressure and wear resistance, non-volatile and low odor

Active Publication Date: 2022-08-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the problem of poor effect in the prior art, to provide a grease composition containing thiuram compound and its preparation method, the grease composition has high extreme pressure and anti-wear properties

Method used

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  • Lubricating grease composition containing thiuram compound and preparation method thereof
  • Lubricating grease composition containing thiuram compound and preparation method thereof
  • Lubricating grease composition containing thiuram compound and preparation method thereof

Examples

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Effect test

preparation example Construction

[0031] The method for preparing the lubricating grease composition provided by the present invention comprises: mixing a thickener and a part of base oil, heating and heating, and then mixing with a thiuram compound, calcium petroleum sulfonate and the remaining base oil.

[0032] In the present invention, when the thickening agent is lithium fatty acid, the thickening agent can be synthesized in situ. Therefore, the method can include: in the presence of a part of the base oil, mixing a fatty acid and a lithium source, heating and heating, introducing The remaining base oil is cooled, and thiuram compounds and calcium petroleum sulfonate are introduced, and the temperature is continued, and optional additives are introduced. More specifically, the method may include: mixing part of the base oil and fatty acid, heating to 80-90° C., introducing an aqueous solution of a lithium source, stirring and raising the temperature, raising the temperature to 200-210° C., introducing the ...

Embodiment 1-14

[0045] According to the proportioning shown in Table 1 and Table 2 respectively (accounting for the weight percent of the total weight of the grease composition, the calculation method of the fatty acid lithium is (the mass of the 12-hydroxy fatty acid / the molecular weight of the 12-hydroxy fatty acid × 12-hydroxy fatty acid lithium) molecular weight) / total weight of the composition × 100%, in the reactor, add base oil and 12-hydroxystearic acid with about 2 / 3 of the base oil consumption, heat up to 85±5°C, add lithium hydroxide aqueous solution , stir to heat up, the temperature rises to 205±5℃, add the remaining about 1 / 3 of the base oil, the material cools down, when the temperature drops to about 130℃, add thiuram compound and calcium petroleum sulfonate, stir for about 15min, Continue to lower the temperature to 85±5°C, add the remaining additives (rust inhibitor and antioxidant), and grind the material through three rounds of grinding to make it evenly dispersed to obtain...

Embodiment 15

[0047] A grease composition sample was prepared according to the method of Example 1, except that the thiuram compound was replaced by tetraisobutylthiuram disulfide (sulfur content 31.3% by weight).

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Abstract

The invention relates to the field of lithium-based grease, and discloses a thiuram compound-containing grease composition and a preparation method thereof. The lubricating grease composition contains a base oil, a thickener, a thiuram compound and calcium petroleum sulfonate, wherein the thickener is a lithium-based thickener; relative to the base oil per kilogram, the thiuram The content of the calcium compound is 3-50g, and the content of the calcium petroleum sulfonate is 3-50g. The invention also discloses a method for preparing the lubricating grease composition. The method comprises: mixing the thickener and part of the base oil, heating and heating, and then mixing with the thiuram compound, calcium petroleum sulfonate and the remaining base oil . Through the above technical solutions, the grease composition of the present invention has good extreme pressure and antiwear properties.

Description

technical field [0001] The invention relates to the field of lithium-based grease, in particular to a grease composition using lithium soap as a thickening agent and a preparation method thereof. Background technique [0002] In recent years, with the development of automation and intelligence of mechanical equipment, in order to ensure the operation accuracy and reliability of equipment, more and more parts are combined and integrated. Such parts are more and more difficult to maintain or even impossible to maintain. Therefore, , these parts require better performance and longer life grease lubrication. Such as sealed hub bearings, small vibrators, small reducers, etc., the load increases during the application process, and the grease needs to have excellent and long-lasting extreme pressure and anti-wear properties to ensure that these parts can meet the needs of long-term applications. [0003] Adding extreme pressure and anti-wear additives is the main means to improve ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/00C10M135/18C10N50/10C10N30/06
CPCC10M169/00C10M135/18C10M2203/1006C10M2203/024C10M2203/0206C10M2229/025C10M2207/1285C10M2219/066C10M2219/044C10M2219/046
Inventor 姚立丹杨海宁
Owner CHINA PETROLEUM & CHEM CORP
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