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Grease composition and preparation method thereof

A grease composition and a technology for the composition, applied in the field of grease, can solve the problems of difficult quality control, complicated process, poor heat resistance of grease, etc., achieve good extreme pressure and wear resistance, simple preparation process, easy quality effect

Active Publication Date: 2022-06-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the preparation process of lubricating grease, it is necessary to convert the high alkali value calcium sulfonate and calcium alkylphenate of Newtonian fluid into non-Newtonian fluid, the process is complicated, the quality control is difficult, and the heat resistance of lubricating grease is not good.

Method used

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  • Grease composition and preparation method thereof
  • Grease composition and preparation method thereof
  • Grease composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] In the reaction kettle, add 480g mineral oil, 160g dodecylbenzenesulfonic acid (melting point is 10°C, boiling point 315°C) and 100g water, stir well, gradually add 61.6g calcium hydroxide, heat up to 80°C and stir for 20min , then add 160g o-toluic acid (melting point is 108 ℃, boiling point is 259 ℃), heat up to 150 ℃ and stir evenly, keep stirring for 20min to make the material fully react, then add 100g mineral oil and 100g extreme pressure antiwear agent carbonic acid Calcium, continue to stir and cool to room temperature, and after the material is cooled, the grease composition sample of the present embodiment is obtained by three-wheel grinding, wherein the thickening agent obtained in the reaction process is 169.3g of calcium dodecylbenzenesulfonate and 182.3 g of calcium o-toluate. The tested product properties are listed in Table 1.

[0058] In the grease composition prepared in this example, the weight ratio of calcium dodecylbenzenesulfonate to calcium o-to...

Embodiment 2

[0060] In the reaction kettle, add 420g mineral oil, 200g dodecylbenzenesulfonic acid (melting point is 10°C, boiling point is 315°C) and 100g water, stir well, gradually add 108.3g calcium carbonate, heat up to 70°C and stir for 15min , then add 140g lactic acid (melting point is 53 ℃, boiling point is 121 ℃), heat up to 150 ℃ and stir evenly, keep stirring for 15min to make the material fully react, then add 100g mineral oil and 120g extreme pressure anti-wear agent calcium carbonate, continue Stir and cool to room temperature, and after the material is cooled, the grease composition sample of this embodiment is obtained by three-wheel grinding, wherein the thickening agent obtained during the reaction is 211.7g calcium dodecylbenzenesulfonate and 169.5g of calcium lactate. The tested product properties are listed in Table 1.

[0061] In the grease composition prepared in this example, the weight ratio of calcium dodecylbenzenesulfonate to calcium lactate is 1:0.8, the cont...

Embodiment 3

[0063] In the reaction kettle, add 500g mineral oil, 170g dodecylbenzene sulfonic acid (melting point is 10°C, boiling point is 315°C) and 200g water, stir well, gradually add 87.5g calcium carbonate, heat up to 80°C and stir for 20min , then add 170g salicylic acid (melting point is 161 ℃, boiling point is 210 ℃), heat up to 140 ℃ and stir evenly, keep stirring for 20min to make the material fully react, then add 140g mineral oil and 80g extreme pressure anti-wear agent calcium carbonate, Continue to stir and cool to room temperature, and after the material is cooled, the grease composition sample of this embodiment is obtained by three-wheel grinding, wherein the thickener obtained during the reaction is 179.9 g of calcium dodecyl benzene sulfonate and 193.4 g of g of calcium salicylate. The tested product properties are listed in Table 1.

[0064] In the grease composition prepared in this example, the weight ratio of calcium dodecylbenzenesulfonate to calcium salicylate i...

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Abstract

The present disclosure relates to a lubricating grease composition and a preparation method thereof. The composition includes a base oil, a thickener and an additive, and the thickener is a mixture of a first calcium salt of an organic acid and a calcium salt of a second organic acid. The first calcium salt of an organic acid is obtained by reacting a first organic acid with a calcium-containing basic compound, and the second organic acid calcium salt is obtained by reacting a second organic acid with a calcium-containing basic compound, wherein the The melting point of the first organic acid does not exceed 30°C, the melting point of the second organic acid is 50-200°C, and the weight ratio of the first organic acid calcium salt to the second organic acid calcium salt is 1:( 0.1‑10). The lubricating grease composition of the present disclosure has good heat resistance, and meanwhile has good comprehensive properties such as extreme pressure and anti-wear properties, colloid stability and the like.

Description

technical field [0001] The present disclosure relates to the technical field of grease, and in particular, to a grease composition and a preparation method thereof. Background technique [0002] Calcium complex grease has a high dropping point and can be used in high temperature areas. [0003] Patent CN102604724A mentions the composition of complex calcium-based grease thickener, including calcium benzoate, calcium salicylate, calcium borate, and calcium acetate, calcium octanoate and calcium 12-hydroxystearate, in order to improve grease performance, Additives such as graphite and tungsten disulfide are also added. While the patent CN100412179A contains the composite calcium thickener and additives in the patent CN102604724A, lithium 12-hydroxystearate is added as a part of the thickener. Regardless of whether the above-mentioned grease composition is calcium complex or calcium-lithium complex, the heat resistance of the grease is not good, and it will become black and h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M115/10C10M117/02C10M117/04C10M117/06C10M117/08C10M123/02C10M169/00C10N30/06C10N30/10C10N50/10
CPCC10M115/10C10M117/02C10M117/04C10M117/06C10M117/08C10M123/02C10M169/00C10M2207/1265C10M2207/1276C10M2207/1285C10M2207/1225C10M2207/1245C10M2203/1006C10M2201/062C10M2219/0445C10N2030/06C10N2030/10C10N2050/10C10N2010/04
Inventor 姚立丹杨海宁
Owner CHINA PETROLEUM & CHEM CORP