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Calcium sulfonate complex grease and preparation method thereof

A technology of compound calcium sulfonate and lubricating grease, applied in the direction of lubricating composition, petroleum industry, etc., to achieve the effect of shortening conversion time, good extreme pressure and anti-wear property, and improving oxidative stability

Inactive Publication Date: 2012-11-14
长沙众城石油化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN101319164A simplifies the types of conversion agents, but has requirements for the base value of raw materials, and at the same time, the production process is complicated, the conversion time is long and the refining temperature is high; although CN201010105181.6 simplifies the types of conversion agents, the conversion time is long and the refining temperature of the entire formula system high
The production method of this type of lubricating grease is complex and has many process control points; the production time is long

Method used

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  • Calcium sulfonate complex grease and preparation method thereof
  • Calcium sulfonate complex grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Add 10g of calcium carbonate and 300g of high-basic calcium sulfonate with a base value of 285mgKOH / g to 300g of 500SN mineral oil, add 7.1g of glacial acetic acid and 36g of water, stir evenly, heat up, and control the temperature at 75-85°C. After thickening, add 15g of lime (2-3 times of water to make an emulsion), 17g of boric acid (2-3 times of water to dissolve), add 17g of dodecyl hydroxystearic acid, add 40g of heavy alkylbenzenesulfonate calcium salt, Keep at 90-100°C for 40-45min, heat up to 130-135°C and keep for 25-30min, add 300g of 150BS base oil, stir evenly, cool and grind. The grease formula is composed of: 28.8% (weight) of high base value calcium sulfonate, 4.4% (weight) of conversion accelerator, 0.7% (weight) of glacial acetic acid, 3.8% (weight) of calcium dodecylbenzenesulfonate, lime 1.5% (weight), lauryl hydroxystearic acid 1.6% (weight), boric acid 1.6% (weight), base oil 57.6% (weight), the physical and chemical performance analysis results of...

Embodiment 2

[0018] Add 90g of high-basic calcium sulfonate with a base value of 420 mgKOH / g to 180g of 100# naphthenic base oil, add 4g of water, 2g of propanol, and 0.6g of glacial acetic acid, stir evenly, raise the temperature, and control the temperature at 60-70 ℃, after the material thickens, add 0.6g lime (2-3 times water to make emulsion), 0.6g boric acid (2-3 times hot water to dissolve), keep at 90-100℃ for 80-90min, heat up to 140 Keep at -150°C for 10-15 minutes, add 322.2g of 150BS base oil, stir evenly, cool and grind. The formula of lubricating grease consists of: 15% (weight) of calcium sulfonate with high base value, 1% (weight) of conversion accelerator, 0.1% (weight) of glacial acetic acid, 0.1% (weight) of lime, 0.1% (weight) of boric acid, and 83.7% (weight) of base oil The physical and chemical performance analysis results of the lubricating grease are shown in Table 1.

Embodiment 3

[0020] Add 280g of high-basic calcium sulfonate with a base value of 304mgKOH / g to 290g of PAO10, add 7.6g of glacial acetic acid and 39g of water, stir evenly, heat up, and control the temperature at 90-100°C. After the material thickens, add 21g Lime (2-3 times water to make emulsion), 11g boric acid (2-3 times hot water to dissolve), add 15.4g dodecyl hydroxystearic acid, add 20g dodecylbenzenesulfonic acid, keep at 100-120℃ 30-40min, heat up to 145°C and keep for 10-15min, add 310g of 150BS base oil, stir evenly, cool and grind. The grease formula is composed of: 28.2% (weight) of high base value calcium sulfonate, 3.9% (weight) of conversion accelerator, 0.8% (weight) of glacial acetic acid, 2.0% (weight) of dodecylbenzenesulfonic acid, and 2.1% (weight) of lime % (weight), lauryl hydroxystearic acid 1.5% (weight), boric acid 1.1% (weight), base oil 60.4% (weight), the physical and chemical performance analysis results of the lubricating grease are shown in Table 1.

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Abstract

The invention discloses calcium sulfonate complex grease and a preparation method thereof. The calcium sulfonate complex grease comprises the following components in percentage by weight: 15 to 50% of high-alkalinity sulfonate, 21 to 83.7% of base oil, 1 to 5% of conversion accelerating agent, 0.1 to 4% of glacial acetic acid, 0 to 4% of alkyl benzene sulfonic acid calcium salt, 0.1 to 4% of lime, 0.1 to 4% of boric acid and 0 to 4% of fatty acid and 0 to 4% of aromatic acid. The alkyl benzene sulfonic acid or alkyl benzene sulfonate is seleceted from the group of one or more than one C6 to C16 alkyl benzene sulfonic acid calcium salt, or heavy alkyl benzene sulfonic acid calcium salt. The preparation method comprises the steps of: uniformly stirring the high-alkalinity sulfonate, the conversion accelerating agent and partial base oil by utilizing an ordinary pressure kettle; then adding a glacial acetic acid water solution at normal temperature, fast stirring, heating to 60 to 100DEG C and maintaining the reaction for 30 to 90min; adding a lime emulsion, a boric acid hydrothermal solution, the alkyl benzene sulfonic acid or alkyl benzene sulfonate, the fatty acid and / or aromatic acid and maintaining the temperature to 90 to 120 DEG C and the reaction for 30 to 90min; dewatering, heating to 130 to 160 DEG C, and keeping the reaction for 10 to 30min; and cooling and carrying out postprocessing. The invention can ensure that the products can be settled for a long term without hardening; the preparation technology is simple; and the preparation method has no special requirement on equipment.

Description

technical field [0001] The invention relates to a composite calcium sulfonate-based lubricating grease and a preparation method thereof. current technology [0002] At present, there are technical documents at home and abroad describing the production and manufacturing methods of this type of lubricating grease. Such as CN101319164A, CN101153239A, CN101235331A, etc. CN101319164A simplifies the types of conversion agents, but has requirements for the base value of raw materials, and at the same time, the production process is complicated, the conversion time is long and the refining temperature is high; although CN201010105181.6 simplifies the types of conversion agents, the conversion time is long and the refining temperature of the entire formula system high. In order to reduce cost and improve performance, lubricating grease manufacturers have also appeared in technical documents describing the use of polyurea thickener mixed with complex calcium sulfonate-based grease, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/06C10M177/00C10N50/10C10N30/10
Inventor 曾海廖顺如卢金吴文革
Owner 长沙众城石油化工股份有限公司
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