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Complex calcium lubricating grease and production technology thereof

A composite calcium-based grease and composite calcium-based technology are applied in lubricating compositions, petroleum industry, thickeners, etc., which can solve the problems of complex production raw materials and processes, limited hardening improvement, inconvenient use and storage, etc., and achieve Improvement of hardening phenomenon, improvement of hardening phenomenon, and effect of reducing the content of soap

Inactive Publication Date: 2011-01-05
长沙众城石油化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Composite calcium-based grease is the first high dropping point grease developed. Because of its good high temperature resistance, extreme pressure, water resistance, and mechanical stability, it has been widely concerned, but the problem of hardening has always restricted its wide use. fatal factor
Because calcium-based grease has surface hardening defects, it is inconvenient to use and store
In recent years, in order to improve the performance of complex calcium-based grease, there are improvements in formula and manufacturing process, such as CN1888036, by adjusting the selection and proportion of small molecule acids and long-chain organic acids, and selecting some small Molecular acid (boric acid) and other additives (titanium dioxide) are used to improve the hardening problem of complex calcium-based grease, but the production time is too long and the degree of hardening improvement is limited; there are also polyurea greases to improve its performance, Such as CN1493673 and CN1493673, the composite calcium-based grease and polyurea grease are mixed to make the two complement each other, but this type of product needs to mix calcium composite and polyurea grease, and the production raw materials and processes are relatively complicated
In short, some solutions at this stage cannot achieve good results, and some methods are relatively complicated, and even need to replace the equipment

Method used

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  • Complex calcium lubricating grease and production technology thereof
  • Complex calcium lubricating grease and production technology thereof
  • Complex calcium lubricating grease and production technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take the mixed oil of mineral oil and poly-α-olefin oil with a viscosity of 46sCt at 40°C: 539g is added to the fat-making kettle, and 73.20g of calcium hydroxide is added at the same time, and stirred evenly. Below 60°C, add 118.80g of glacial acetic acid, and stir for 40 minutes; then add 24g of adipic acid and 33.20g of sebacic acid, and stir for another 20 minutes; when the temperature rises to 90°C, add 49.50g of dodecyl hydroxystearic acid , stirred for 10 min and then heated to raise the temperature. Composite reaction at 90-150°C for 120 minutes. After 60 minutes of compounding, add 20.90 g of calcium hydroxide, and continue to heat up after compounding. When the temperature reaches 160-180°C, add 10.40 g of calcium hydroxide and 77 g of thickened oil. When the temperature continues to rise to 220-240°C, after heat preservation and refining for 5-15 minutes, add 154g of cooling oil, wait until the temperature is lowered to below 80°C, and grind twice with a thr...

Embodiment 2

[0018] Take the mixed oil of mineral oil and polyalphaolefin oil with a viscosity of 1000sCt at 40°C: 539g is put into the fat-making kettle, and 73.20g of calcium hydroxide is added at the same time, and stirred evenly. Below 60°C, add 118.80g of glacial acetic acid, and stir for 40 minutes; then add 24g of adipic acid and 33.20g of sebacic acid, and stir for another 20 minutes; when the temperature rises to 90°C, add 49.50g of dodecyl hydroxystearic acid , stirred for 10 min and then heated to raise the temperature. Composite reaction at 90-150°C for 120 minutes. After 60 minutes of compounding, add 20.90 g of calcium hydroxide, and continue to heat up after compounding. When the temperature reaches 160-180°C, add 10.40 g of calcium hydroxide and 77 g of thickened oil. When the temperature continues to rise to 220-240°C, after heat preservation and refining for 5-15 minutes, add 154g of cooling oil, wait until the temperature is lowered to below 80°C, and grind twice with a...

Embodiment 3

[0020] Take the mixed oil of mineral oil and polyalphaolefin oil with a viscosity of 40°C of 46sCt: 492.80g is added to the fat-making kettle, and 21.30g of calcium hydroxide is added at the same time, and stirred evenly. Below 60°C, add 34.40g of glacial acetic acid, and stir for 40 minutes; then add 7g of adipic acid and 9.80g of sebacic acid, and stir for another 20 minutes; when the temperature rises to 90°C, add 14.40g of dodecyl hydroxystearic acid , stirred for 10 min and then heated to raise the temperature. Composite reaction at 90-150°C for 120 minutes. After 60 minutes of compounding, add 6.10 g of calcium hydroxide, and continue to heat up after compounding. When the temperature reaches 160-180°C, add 3g of calcium hydroxide and 70.40g of thickened oil. When the temperature continues to rise to 220-240°C, after heat preservation and refining for 5-15 minutes, add 140.80g of cooling oil, wait until the temperature is lowered to below 80°C, and grind twice with a th...

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Abstract

The invention discloses complex calcium lubricating grease and a production technology thereof. The complex calcium lubricating grease comprises base oil and a complex calcium thickener, wherein the base oil accounts for 70-88% of the total weight of the lubricating grease and the complex calcium thickener accounts for12-30% of the total weight of the lubricating grease; the complex calcium thickener is generated by the reaction of acid and calcium hydroxide, and the acid is an acid mixture of high molecular acid, middle molecular acid and low molecular acid, wherein the added amount of the calcium hydroxide occupies 3.80-9.50% of the lubricating grease by weight, and the added amounts of the high molecular acid, the middle molecular acid and the low molecular acid respectively accounts for 1.80-4.50%, 2.10-5.20% and 4.30-10.80% of the total weight of the lubricating grease The production technology comprises the steps of: adding 49-61-6 wt% of base oil and 2.66-6.65 wt% of calcium hydroxide in a reaction kettle and mixing evenly; and then, adding the high molecular acid, the middle molecular acid and the low molecular acid in sequence, adding 0.76-1.90 wt% of calcium hydroxide, adding 0.38-0.95 wt% of calcium hydroxide, refining and grinding. Compared with the prior art, the invention has the biggest advantage of improvement to the hardening phenomenon.

Description

technical field [0001] The invention relates to a composite calcium-based lubricating grease and a production process thereof. Background technique [0002] Composite calcium-based grease is the first high dropping point grease developed. Because of its good high temperature resistance, extreme pressure, water resistance, and mechanical stability, it has been widely concerned, but the problem of hardening has always restricted its wide use. fatal factor. Because calcium-based grease has the defect of surface hardening, it is inconvenient to use and store. In recent years, in order to improve the performance of complex calcium-based grease, there are improvements in formula and manufacturing process, such as CN1888036, by adjusting the selection and proportion of small molecule acids and long-chain organic acids, and selecting some small Molecular acid (boric acid) and other additives (titanium dioxide) are used to improve the hardening problem of complex calcium-based grea...

Claims

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Application Information

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IPC IPC(8): C10M117/00C10M177/00C10N50/10
Inventor 阎君廖顺如卢金吴文革
Owner 长沙众城石油化工有限责任公司
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