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Purification dispersant for engine lubricating oil and preparation method thereof

A technology of cleansing and dispersing agent and lubricating oil, which is applied in the direction of lubricating compositions, additives, petroleum industry, etc. It can solve the problems of not recommending long-term use, insufficient cleaning effect, poor dispersing effect, etc., and achieves simple and easy production method and reasonable formula , Good cleaning and dispersing performance

Inactive Publication Date: 2015-01-07
青岛蓬勃石油技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently commercially available detergents either have a strong cleaning effect and a poor dispersion effect, or have a strong dispersion effect and insufficient cleaning effect
The cleansing and dispersing effect of lubricating oil has a great relationship with the selection and compatibility of raw materials. Although some lubricating oil dispersants have strong cleansing and dispersing effects, the raw materials used are more harmful to the environment and human body, and long-term use is not recommended.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A detergent and dispersant for engine lubricating oil, comprising the following raw materials in parts by mass: 32 parts of trimethylolpropane ester, 10 parts of glyceryl trilinoleate, 4 parts of N-octanoyl-N-methylglucamine , 4 parts of polyoxyethylene lanolin ether, 12 parts of polyisobutylene succinimide, 4 parts of alkylphenol polyoxyethylene ether, 5 parts of calcium chloride, 5 parts of sodium sulfate, 5 parts of molybdenum disulfide, 15 parts of methanol , 20 parts of ethanol, 10 parts of water.

[0020] The preparation method of the present embodiment comprises the following steps:

[0021] Step 1: According to the mass ratio, add trimethylolpropane ester and glyceryl trilinoleate into the reaction kettle, raise the temperature to 80°C, and stir at 80°C for 2 hours, then add N-octanoyl-N- Methylglucamine, polyoxyethylene lanolin ether, cooled to 60°C, stirred for 30min;

[0022] Step 2: Add water, calcium chloride, sodium sulfate, and molybdenum disulfide in s...

Embodiment 2

[0025] A detergent and dispersant for engine lubricating oil, comprising the following raw materials in parts by mass: 45 parts of trimethylolpropane ester, 15 parts of glyceryl trilinoleate, and 9 parts of N-octanoyl-N-methylglucamine , 9 parts of polyoxyethylene lanolin ether, 18 parts of polyisobutylene succinimide, 7 parts of alkylphenol polyoxyethylene ether, 9 parts of calcium chloride, 10 parts of sodium sulfate, 9 parts of molybdenum disulfide, 18 parts of methanol , 25 parts of ethanol, 14 parts of water.

[0026] The preparation method of the present embodiment comprises the following steps:

[0027] Step 1: According to the mass ratio, add trimethylolpropane ester and glyceryl trilinoleate into the reaction kettle, raise the temperature to 95°C, and stir at 95°C for 3 hours, then add N-octanoyl-N- Methylglucamine, polyoxyethylene lanolin ether, cooled to 75°C, stirred for 30min;

[0028] Step 2: Add water, calcium chloride, sodium sulfate, and molybdenum disulfide...

Embodiment 3

[0031] A detergent and dispersant for engine lubricating oil, comprising the following raw materials in parts by mass: 40 parts of trimethylolpropane ester, 13 parts of glyceryl trilinoleate, and 8 parts of N-octanoyl-N-methylglucamine , 8 parts of polyoxyethylene lanolin ether, 15 parts of polyisobutylene succinimide, 6 parts of alkylphenol polyoxyethylene ether, 7 parts of calcium chloride, 8 parts of sodium sulfate, 7 parts of molybdenum disulfide, 16 parts of methanol , 23 parts of ethanol, 12 parts of water.

[0032] The preparation method of the present embodiment comprises the following steps:

[0033] Step 1: According to the mass ratio, add trimethylolpropane ester and glyceryl trilinoleate into the reaction kettle, raise the temperature to 85°C, and stir at a constant temperature of 80-95°C for 3 hours, and then add N-octanoyl- N-methylglucamine, polyoxyethylene lanolin ether, cooled to 70°C, stirred for 30min;

[0034] Step 2: Add water, calcium chloride, sodium s...

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PUM

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Abstract

The invention discloses a purification dispersant for engine lubricating oil and a preparation method thereof. The purification dispersant comprises the following raw materials in parts by mass: 32-45 parts of trimethylolpropane ester, 10-15 parts of trilinolein, 4-9 parts of N-octanoyl-N-methylglucamine, 4-9 parts of ethoxylated lanolin alcohol, 12-18 parts of polyisobutylene succinimide, 4-7 parts of alkylphenol ethoxylates, 5-9 parts of calcium chloride, 5-10 parts of sodium sulfate, 5-9 parts of molybdenum disulfide, 15-18 parts of methanol, 20-25 parts of ethanol and 10-14 parts of water. The purification dispersant has good purifying and dispersing effects; after the purification dispersant is mixed with existing ordinary lubricating oil, the lubricating oil has good purifying and dispersing performance on the basis of keeping original lubricating performance; raw materials adopted in the purification dispersant are accordant with a national standard, and are suitable for long-term use; and a formula is reasonable, a production method is simple and feasible, and the purification dispersant is suitable for wide popularization and application.

Description

technical field [0001] The invention belongs to the technical field of petroleum, and in particular relates to a detergent and dispersant for engine lubricating oil and a preparation method thereof. Background technique [0002] Lubricating oil is generally used in engines to reduce friction and improve life and efficiency. However, the top of the piston and the piston ring or the bottom of the general engine are prone to carbon deposits and / or some colloidal viscous substances. When these substances are used, it will usually lead to short circuit of the piston, air leakage of the exhaust valve or early ignition of oil and gas, and even phenomenon such as ring sticking and cylinder scuffing. [0003] Some of the existing lubricants have the function of cleaning and dispersing. The so-called cleaning and dispersing means that the lubricating oil can effectively remove insoluble substances, end-of-term or carbon deposits in the engine while having a lubricating effect, so th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M161/00C10N30/04
Inventor 李祥国
Owner 青岛蓬勃石油技术服务有限公司