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Lubricating oil composition and method for improving detergency of lubricating oil

A technology of lubricating oil composition and compound detergent, applied in lubricating composition, petroleum industry, additives, etc., can solve problems such as detergency and various performances that cannot meet requirements

Active Publication Date: 2018-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, with the increase of engine power and the extension of oil change intervals, the oxidation resistance, dispersibility, and wear resistance of the original oil are required to be further improved, while the detergency and various properties of the existing formula Sometimes it does not meet the requirements, therefore, further improvement is required

Method used

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  • Lubricating oil composition and method for improving detergency of lubricating oil
  • Lubricating oil composition and method for improving detergency of lubricating oil
  • Lubricating oil composition and method for improving detergency of lubricating oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Embodiment 1 catalyst preparation

[0058] Synthesis of IL-1 as catalyst of 1-methyl-3-butylimidazole boron tetrafluoride salt-metaphosphoric acid-sodium dodecylbenzenesulfonate

[0059] Add 1mol N-methylimidazole and 1.05mol 1-bromobutane into a three-necked flask, 2 After purging for 20mim, start stirring and heat to 85°C for 30-36h. After the reaction was completed, it was left to cool down to room temperature, the lower layer of the solution was light yellow, and the upper layer was unreacted raw materials. The upper layer liquid was decanted, 3 times the volume of ethyl acetate was added to the lower layer liquid to wash, and then the ethyl acetate was separated to remove unreacted raw materials. After washing, dry at 70°C for 24 hours to obtain light yellow viscous 1-methyl-3-butylimidazolium bromide.

[0060] The obtained 1-methyl-3-butylimidazolium bromide was dissolved in dichloromethane, and NaBF was added thereto 4 Aqueous solution with a content of 1mol ...

Embodiment 2

[0062] Example 2 Salicylic acid alkylation reaction catalyzed by IL-1

[0063] In a 500mL three-necked flask, add 20 grams of catalyst IL-1, 100 grams of C 16 α-Olefin (Mn=224.4, 0.446 mol), 70.78 g of salicylic acid (Mn=138.12, 0.512 mol), nitrogen gas was introduced, stirring was started, heating was controlled at a temperature between 140°C and 142°C, and the reaction was carried out for 5 hours.

[0064] After the reaction, the temperature of the three-necked flask was lowered. When the temperature of the material dropped below 40° C., the stirring was stopped, and 150 grams of No. 120 solvent gasoline was added. The materials in the three-necked flask were taken out, placed in a separatory funnel to separate layers, and the oil phase in the upper layer was collected, and the ionic liquid in the lower layer could be reused. Add 300 grams of distilled water to wash three times in the oil phase, remove unreacted salicylic acid in the oil phase, and dry the oil phase with an...

Embodiment 3

[0066] Implementation of the synthesis of 3 polymethacrylates PMA1

[0067] In the three-necked flask, add 40 grams of base oil 150SN (produced by Sinopec Yanshan Petrochemical, with a kinematic viscosity of 5.7mm at 100°C) 2 / s), 15 grams of decyl methacrylate, 5 grams of methyl methacrylate, 30 grams of myristyl methacrylate, 10 grams of dodecyl methacrylate, adding 0.08 grams of azobisisobutyronitrile, Introduce nitrogen to protect the reactant, turn on the stirring and raise the temperature to 75°C. At this time, it is observed that the reactant has obvious exotherm, and the reaction temperature is controlled at 90°C. After 2 hours of prepolymerization, the material becomes viscous obviously, and then add 0.05 grams of azo For diisobutyronitrile, the temperature was gradually increased to 105°C for 5 hours of copolymerization reaction, and a light yellow viscous liquid was obtained. Under nitrogen protection, the reacted material was lowered to 25°C to obtain a tetrapolym...

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Abstract

The invention provides lubricating oil composition and a method for improving detergency of lubricating oil. The lubricating oil composition is prepared from a compound detergent, a dispersant, an antioxidant, an anti-wear agent, a demulsifier and the balance of lubricating base oil, wherein the compound detergent is a mixture of alkylsalicylate, sulfurized alkyphenate and sulfonate. The lubricating oil composition has excellent high-temperature detergency, oxidation stability and antiwear and antifriction properties, particularly has excellent high-temperature detergency and emulsion resistance and is rapid and thorough in water separation and applicable to lubrication of diesel engines for ships and particularly, lubrication of crank cases of two-stroke and low-speed crosshead type diesel engines for ships and medium-speed piston type diesel engines.

Description

technical field [0001] The invention relates to a lubricating oil composition, in particular to a lubricating oil composition suitable for marine diesel engines. Background technique [0002] With the rapid development of my country's marine transportation industry, the demand for marine oil for large ships continues to increase, and the quality of oil products continues to improve. These oil products mainly include two-stroke low-speed crosshead cylinder oil, system oil and four-stroke medium-speed cylindrical piston diesel engine oil. Among them, although the working conditions of system oil and four-stroke medium-speed tubular piston diesel engine oil are not as harsh as those of marine cylinder oil, they still involve the operation where the fuel is diesel with high sulfur content and water exists. Therefore, oil products have certain requirements for the base value, generally requiring the system oil to be within the range of 6-10 mgKOH / g, and medium-speed engine oil r...

Claims

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Application Information

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IPC IPC(8): C10M167/00C10M161/00C10M169/04C10M177/00C10N30/02C10N30/04C10N30/06C10N30/10C10N40/25C10N40/26
CPCC10M161/00C10M167/00C10M169/044C10M169/048C10M177/00C10M2215/064C10M2207/286C10M2207/144C10M2229/041C10M2223/045C10M2219/044C10M2219/066C10M2219/089C10M2219/088C10N2020/02C10N2030/04C10N2030/02C10N2030/10C10N2030/06C10N2040/252C10N2040/26
Inventor 刘依农段庆华张耀魏克成
Owner CHINA PETROLEUM & CHEM CORP
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