KR20120134675A - Engine cleaner composition - Google Patents

Abstract

PURPOSE: An internal combustion engine-cleaning lubricant composition is provided to offer an excellent cleaning effect to thick contaminant accumulation in the engine. CONSTITUTION: An internal combustion engine-cleaning lubricant composition contains 20-60wt% of internal combustion engine oil, 5-15wt% of xylene, 5-10wt% of dibutylhydroxytoluene as an antioxidant, 5-15wt% of benzylamin as a detergent dispersant, 10-15wt% of sulfonate as a rust-preventive agent, 5-10wt% of tricresyl phosphate as an extreme pressure agent, 1-8wt% of silicon based antifoamer, 5-10wt% of ethylenepropylene copolymer as a viscosity index improver, 1-5wt% of polyalkyl(meta)acrylate as a pour point depressant, and 1-5wt% of dimethyl polysiloxane as synthetic oil.

Description

Internal combustion engine cleaning lubricant composition

The present invention relates to an engine cleaning lubricant composition for cleaning the inside of an engine. More specifically, the present invention relates to an engine cleaning lubricant composition for cleaning the inside of an engine without disassembling the engine of various impurities, carbon, sludge, gum, etc., which are generated and accumulated in the engine during long-term use of an internal combustion engine such as an automobile engine. .

Recently, general passenger cars, buses, trucks and motorcycles equipped with gasoline engines, diesel engines, LPG engines, etc. are rapidly increasing, and the engines have increased durability due to technology improvement and thus have a considerably longer service life than conventional engines. However, in proportion to the engine, due to long-term use, contaminant deposits such as carbon and gums are generated and accumulated in the engine throttle valve, injector, intake valve, and combustion chamber to increase frictional resistance in the engine during engine operation. It causes a decrease in airtightness and compressibility, which causes incomplete combustion of the fuel.

Due to the above problems, the following various methods are used to clean the engine.

(a) Combustion and cleaning during the combustion process by injecting the engine cleaning composition directly into the open air throttle of the carburetor while running the engine at high rpm to mix the cleaning agent with fuel.

(b) A method of cleaning an injector comprising the use of a compressed container comprising an engine fuel and a cleaning agent.

and (c) disconnecting the vacuum line from the vacuum port connected to the air intake manifold and then connecting the rubber soluble line to the vacuum port.

(d) A method of using an engine cleaner composition that is added directly to a vehicle's fuel tank.

(e) A method of using an engine cleaner composition mixed with engine oil of an internal combustion engine.

Among the above cleaning methods, the most commonly used method is to add an engine cleaner with fuel directly to the fuel tank and to use it in a mixture of engine oils, but these methods have a wide range of solubility to clean the engine efficiently. The detergent composition which has is preferable.

As a cleaning agent added to the fuel, US Pat. There is a problem of contaminating an engine part, Korean Patent Laid-Open Publication No. 2002-15162 discloses a cleaning composition for an internal combustion engine in which a composition containing trichloroethane and methylene chloride is mixed with an automobile lubricating oil. There is a disadvantage in that only the surface of the contaminant is cleaned and effective cleaning of thick accumulated contaminants is not achieved.

The present invention is to provide an engine cleaning lubricant composition which is excellent in the cleaning effect against the dirt accumulation accumulated in the long-term use of the engine in order to solve the problems of the prior art, the cleaning effect can be long lasting. have.

In particular, it is an object of the present invention to efficiently remove carbon, and does not include environmentally harmful substances to provide an environment-friendly engine cleaning lubricant composition.

The present invention is an engine cleaning lubricant comprising oil for internal combustion engine, xylene (C ₆ H ₄ (CH ₃ ) ₂ ), antioxidant, clean dispersant, rust preventive agent, extreme pressure agent, silicone antifoaming agent, viscosity index improver, fluid depressant, synthetic oil It relates to a composition.

More specifically, the present invention is 20 to 60% by weight of oil for internal combustion engines, 5 to 15% by weight of xylene (C ₆ H ₄ (CH ₃ ) ₂ ), 5 to 10% by weight of dibutylhydroxytoluene as an antioxidant, clean dispersant 5-15% by weight of rhobenzylamine, 10-15% by weight of sulfonate as rust inhibitor, 5-10% by weight of tricresyl phosphate or sulfide terpene as extreme pressure agent, 1-8% by weight of silicone antifoaming agent, ethylene-propylene as viscosity index improver It relates to an engine cleaning lubricant composition comprising 5 to 10% by weight of copolymer, 1 to 5% by weight of polyalkyl (meth) acrylate as fluid depressant, and 1 to 5% by weight of dimethylpolysiloxane as synthetic oil.

The present invention may further include 0.1 to 2% by weight of carbon nanoparticles, ultra high molecular weight polyethylene powder having a weight average molecular weight of 1 × 10 ⁶ to 5 × 10 ⁶ , or a mixture thereof.

In addition, if necessary, it may further comprise 0.1 to 2% by weight of pigments, perfumes or mixtures thereof.

Hereinafter, each configuration of the present invention will be described in more detail.

In the present invention, the oil for the internal combustion engine serves to maintain the smooth operation of the machinery, all of the usual internal combustion engine oil is possible, but 7.5W / 30, three kinds of special land 10/30 is preferred. It is preferable to use the content of 20 to 60% by weight. If the content is less than 20% by weight, it is not suitable for use as a lubricant, and when it exceeds 60% by weight, the use amount of other additives is reduced. The cleaning effect of pollutants (carbon, sludge, etc.) can be reduced.

In the present invention, the xylene (xylene) serves to decompose and remove contaminants such as sludge produced and fixed on the metal surface. The inventors of the present invention in the process of research for the efficient removal of contaminants and development of a composition that does not contain environmental harmful substances, xylene is not an environmental regulatory substance, the removal efficiency of contaminants is better than other aromatic hydrocarbon materials, especially In the case of using a specific content range, it has been found that the removal efficiency of the contaminant is greatly improved, thereby completing the present invention. In the present invention, the xylene is characterized by using 5 to 15% by weight. When the content of xylene is used less than 5% by weight, the removal efficiency of the pollutants is insignificant, and when using 5% by weight or more and 15% by weight, the removal efficiency of the pollutants is very excellent.

In the present invention, the antioxidants (antioxidants) as a component that acts to enable long-term use by delaying the oxidation rate of the lubricating oil, in the present invention, when dibutyl hydroxytoluene is used, further improved effect with other components Expresses. The content expresses the best effect in the range using 5 to 10% by weight.

In the present invention, the dispersant disperses insoluble substances in oil due to the surfactant activity, thereby preventing aggregation of contaminants such as sludge in the engine, neutralizing acidic substances, and common surfactants. Although be possible, it is preferable to use benzylamine in the composition of the present invention, especially when used in 5 to 15% by weight is very excellent decontamination and prevention effect.

In the present invention, the anti-rust additives (anti-rust additives) serves to prevent the formation of rust generated due to moisture in the engine, and sulfonate, carboxylate or methanol may be used, but the composition of the present invention It is preferable to use a sulfonate salt, and specific examples of such sulfonate salts include ammonium sulfonate, barium sulfonate, and the like. The content range is 10 to 15% by weight when used in corrosion prevention and decontamination efficiency is very good.

In the present invention, the extreme press additives react with the metal surface by heat generation due to local fusion when metal contacts occur to form a film of the metal inorganic compound at a high speed to prevent extreme wear. It is preferable to use tricresil phosphate or sulfide terpene in the composition of the present invention. The content is 5 to 10% by weight when used in the extreme wear protection efficiency of the metal surface is very excellent.

In the present invention, silicone antifoam agents are used to alleviate or eliminate lubricating oil bubbles. In the composition of the present invention, silicone oil is preferable, and in particular, a silicone viscosity of 250 to 2500 mPas (25 ° C) is used. Preference is given to using Simethicone. Simethicone is _{(- (CH 3) 2 -SiO-} ) stabilized with trimethylsiloxy end protected units _{(- (CH 2) 2 -SiO-} ) dimethicone compounds consisting of linear siloxane polymers containing repeating units of the n It means a mixture of and silicon dioxide. The content is very good decontamination efficiency when used in 1 to 8% by weight.

In the present invention, the viscosity index improvers (viscosity index improvers) is used to improve the viscosity characteristics of the lubricating oil, the organic material including the lubricating oil is sensitive to changes in temperature, the viscosity is increased at low temperatures and very viscous at high temperatures Becomes smaller. At low temperatures, the startability of the machinery is poor, and at high temperatures, the lubricating film is weak, and wear is easily caused. As a viscosity index improver for improving such a viscosity characteristic, an ethylene-propylene copolymer is preferable. Specifically, it is preferable to use an ethylene-propylene copolymer having a weight average molecular weight of 5000 to 50000. When the content is used in 5 to 10% by weight, the lubricating viscosity stability is very excellent.

In the present invention, the pour point depressants are used to lower the pour point. Since the main components of the lubricating oil are various hydrocarbon mixtures, the fluid contained in the lubricating oil is high while the water contained in the lubricating oil is frozen. Are expressed, resulting in the deterioration of the lubricant. The so-called structural viscosity phenomenon appears, in which case the addition of pour point depressants acts to lower the pour point. In the present invention, it is preferable to use polyalkyl (meth) acrylate as the fluid lowering agent. In this case, the alkyl may be an alkyl of (C1-C10), of which methyl and ethyl are preferred. It is preferable to use the weight average molecular weights of the said polyalkyl (meth) acrylate that are 5000-15000. The content of 1 to 5% by weight is very effective in preventing structural viscosity.

In the present invention, the synthetic oil is used to improve the mixing of the components of the present invention and to improve the storage stability, specifically, it is preferable to use dimethylpolysiloxane. The content of 1 to 5% by weight is very effective in decontamination and antifouling.

The engine cleaning lubricant according to the present invention may further include 0.1 to 2% by weight of carbon nanoparticles, ultra high molecular weight polyethylene powder having a weight average molecular weight of 1 × 10 ⁶ to 5 × 10 ⁶ , or a mixture thereof, as necessary. The ultra high molecular weight polyethylene powder is a material having excellent wear resistance and excellent mechanical strength, and can further improve the removal efficiency of contaminants. The carbon nanoparticles are used to reduce the friction coefficient of the cylinder pump of the engine and to further improve the removal efficiency of contaminants. It is preferable to use those having an average particle diameter of 10 to 100 nm, and the shape is not limited. The ultra high molecular weight polyethylene powder having the carbon nanoparticles or the weight average molecular weight of 1 × 10 ⁶ to 5 × 10 ⁶ can be economically and effectively used in the range of 0.1 to 2% by weight.

In addition, the engine cleaning lubricant according to the present invention may further comprise 0.1 to 2% by weight of pigments, perfumes or mixtures thereof as necessary.

The internal combustion engine cleaning lubricant according to the present invention adds 3% to 5% of the present composition according to the amount of the existing engine oil to the engine oil, and then idles for a predetermined period of time (100 km to 300 km) or idle (60 minutes to 180 minutes). Min) and use it to replace oil.

Next, the method of manufacturing the engine cleaning lubricant of the present invention will be described in detail.

The engine cleaning lubricating composition of the present invention is characterized by the order of loading and the input temperature, and when the mixing temperature is outside the following range, the composition may not be mixed and layer separation may occur, and dispersibility and storage stability may be reduced. .

The method for producing the engine cleaning lubricant of the present invention

a) dibutyl hydroxytoluene as an antioxidant in the reactor, heated to 50 ~ 70 ℃, and then added by adding a sulfonate salt as a rust inhibitor;

b) heating the mixture of step a) to 80-85 ° C. and then adding and mixing dimethylpolysiloxane with synthetic oil;

c) after cooling the mixture of step b) to 0 ~ 10 ℃, mixing by rotating at high speed to 10000 ~ 30000rpm by adding xylene;

d) heating the mixture of step c) to 65-75 ° C. and then adding and mixing tricresil phosphate with extreme pressure agent;

e) lowering the temperature of the mixture of step d) to 40-45 ° C., adding and mixing oil for an internal combustion engine;

f) mixing the mixture of step e) by adding benzylamine as a clean dispersant, a silicone-based antifoaming agent, an ethylene-propylene copolymer as a viscosity index improver, and polymethyl methacrylate as a fluidity lowering agent;

It includes.

According to the present invention, carbon nanoparticles, a weight average molecular weight of 1 × 10 ⁶ to 5 × 10 ⁶ in step f) may be added to the ultra-high molecular weight polyethylene powder or a mixture thereof as necessary.

The present invention may add a pigment, a fragrance or a mixture thereof in step d) as necessary.

The engine cleaning lubricant according to the present invention decomposes and cleans various impurities, carbon, sludge, gum, etc., which are generated and stuck inside the engine, to form a high-strength, low-friction surface, and improve adhesion of the adhesion surface by improving the performance of the engine. By normalizing the performance of the engine to normalize it has the effect of efficient use of energy due to improved fuel economy and environmental protection by reducing the emission of environmental substances.

Hereinafter, the present invention will be described in detail with reference to the following examples. However, the present invention is not limited to the following examples.

The physical properties were measured by the following measurement method.

1) Specific gravity

Specific gravity test was conducted according to KS M 2002.

2) kinematic viscosity

Kinematic viscosity test was conducted according to KS M 2014.

3) Copper plate corrosion

Copper plate corrosion test was conducted according to KS M 2018.

4) Pour point

Pour point test was conducted according to KS M 2016.

5) Oxidation Stability

Oxidation stability test was conducted according to KS M 2008.

6) Antirust performance test

Antirust performance test was conducted according to KS M 2009.

7) Load capacity test

Load capacity test was conducted according to KS M 2026.

8) Cleanliness of engine and emission rate (%)

-Things to prepare: used cars for test (exhaust volume 2000cc, mileage 14,523 km)

-Performance test:

In order to evaluate the engine cleaning power of the engine cleaner according to the present invention, a removal rate (%) was measured by measuring the concentrations of carbon monoxide, carbon dioxide, and hydrocarbons in the engine exhaust gas before and after cleaning using a passenger car having an engine displacement of 2000 cc and a driving distance of 14,523 km. .

The car was driven 300 km in normal driving conditions (driving speed 50 ~ 60km (2 ~ 3 gears) for 1 hour and 4 steps after that). After running, the lid of the engine was opened, and the initial state of the engine was visually observed. The concentrations of carbon monoxide, carbon dioxide, and hydrocarbons and the excess air ratio of the engine exhaust gas were measured.

Thereafter, 80 ml of the engine cleaning solution of the Examples and Comparative Examples were directly added to the engine together with the engine oil, and then 300 km was driven under the same operating conditions as before the cleaning, and the carbon monoxide, carbon dioxide, hydrocarbon concentration, and excess air ratio were measured after the cleaning. In addition, the state of the muffler and the engine inside were visually observed.

The excess air ratio (λ: ben) before and after washing was maintained at a deviation of 1.00 ± 0.02, and the removal rate according to the following Equations 1 to 3 was calculated and shown in Table 3.

[Formula 1]

Carbon monoxide removal rate (%) = (concentration of carbon monoxide before washing-concentration of carbon monoxide after washing) / concentration of carbon monoxide before washing × 100

[Formula 2]

% Removal of carbon dioxide = (concentration of carbon dioxide before washing-concentration of carbon dioxide after washing) / concentration of carbon dioxide before washing × 100

[Equation 3]

% Hydrocarbon removal rate = (the concentration of hydrocarbon before washing-the concentration of hydrocarbon after washing) / the concentration of hydrocarbon before washing × 100

[Examples 1 to 3]

Preparation of Engine Cleanser Composition

8% by weight of dibutylhydroxytoluene was added to the reactor as an antioxidant, heated to 60 ° C, and 12% by weight of sulfonate (ammonium sulfonate) was added as a rust preventive and mixed. After heating to 80 ° C, 4% by weight of dimethylpolysiloxane (shinetsu, KF-96) was added and mixed with a synthetic oil. After the mixture was cooled to 0 ° C., 5% by weight of xylene was added, and the mixture was mixed at high speed by rotating at 20000 rpm. After heating to 70 DEG C, 8% by weight of tricresyl phosphate was added and mixed with an extreme pressure agent. After adding 0.5% by weight of pigment (phthalocyanine blue) and 0.5% by weight of fragrance (acacia emulsifying perfume) to the mixture, the temperature was lowered to 40 ° C., and the internal combustion engine oil (GS Caltex Deluxe Gold V 7.5W / 30, Hyundai gear oil) 85 W / 140) was added and mixed. Ethylene-propylene copolymer (weight average molecular weight 15,000) as 10% by weight of the benzylamine, a clean dispersant, 5% by weight of a silicone antifoaming agent (shinetsu, KS-66, SIMETHICONE with a viscosity of 25 m) 300 mPas 8% by weight and 4% by weight of polymethyl methacrylate (weight average molecular weight 20,000) were added as a fluid lowering agent.

The content of each component is summarized in Table 1 below, and measured and shown in Table 3 below.

[Examples 2 to 3]

Except for changing the content of the internal combustion engine oil and xylene in Example 1 as shown in Table 1 to prepare a composition in the same manner.

The content of each component is summarized in Table 1 below, and measured and shown in Table 3 below.

Example 4

8% by weight of dibutylhydroxytoluene was added to the reactor as an antioxidant, heated to 60 ° C, and 12% by weight of sulfonate (ammonium sulfonate) was added as a rust preventive and mixed. After heating to 80 ° C, 4% by weight of dimethylpolysiloxane (shinetsu, KF-96) was added and mixed with a synthetic oil. After the mixture was cooled to 0 ° C., 10% by weight of xylene was added, and the mixture was mixed at high speed by rotating at 20000 rpm. After heating to 70 DEG C, 8% by weight of tricresyl phosphate was added and mixed with an extreme pressure agent. After adding 0.5% by weight of fragrance (acacia emulsifying perfume) to the mixture, the temperature was lowered to 40 ° C, and 30% by weight of oil for internal combustion engines (GS Caltex Deluxe Gold V 7.5W / 30, Hyundai gear oil 85W / 140) was added. And mixed. Ethylene-propylene copolymer (weight average molecular weight 15,000) as 10% by weight of the benzylamine, a clean dispersant, 5% by weight of a silicone antifoaming agent (shinetsu, KS-66, SIMETHICONE with a viscosity of 25 m) 300 mPas 8% by weight, 4% by weight of polymethyl methacrylate (weight average molecular weight 20,000) and 0.5% by weight of carbon nanoparticles (average particle diameter: 50 nm) were added as a fluid lowering agent.

The content of each component is summarized in Table 1 below, and measured and shown in Table 3 below.

[Example 5]

8% by weight of dibutylhydroxytoluene was added to the reactor as an antioxidant, heated to 60 ° C, and 12% by weight of sulfonate (ammonium sulfonate) was added as a rust preventive and mixed. After heating to 80 ° C, 4% by weight of dimethylpolysiloxane (shinetsu, KF-96) was added and mixed with a synthetic oil. After the mixture was cooled to 0 ° C., 10% by weight of xylene was added, and the mixture was mixed at high speed by rotating at 20000 rpm. After heating to 70 DEG C, 8 wt% of tricresyl phosphate was added and mixed with extreme pressure. After adding 0.5% by weight of fragrance (acacia emulsifying perfume) to the mixture, the temperature was lowered to 40 ° C, and 30% by weight of oil for internal combustion engines (GS Caltex Deluxe Gold V 7.5W / 30, Hyundai gear oil 85W / 140) was added. And mixed. Ethylene-propylene copolymer (weight average molecular weight 15,000) as 10% by weight of the benzylamine, a clean dispersant, 5% by weight of a silicone antifoaming agent (shinetsu, KS-66, SIMETHICONE with a viscosity of 25 m) 300 mPas ) 8% by weight, Ultra High Molecular Weight Polyethylene Powder (Ticona GmbH, Hostalen GUR 4113) with 0.5% by weight of polymethyl methacrylate (weight average molecular weight 20,000), weight average molecular weight 3.8 × 10 ⁶ Add and mix.

The content of each component is summarized in Table 1 below, and measured and shown in Table 3 below.

[Example 6]

8% by weight of dibutylhydroxytoluene was added to the reactor as an antioxidant, heated to 60 ° C, and 12% by weight of sulfonate (ammonium sulfonate) was added as a rust preventive and mixed. After heating to 80 ° C, 4% by weight of dimethylpolysiloxane (shinetsu, KF-96) was added and mixed with a synthetic oil. After the mixture was cooled to 0 ° C., 10% by weight of xylene was added, and the mixture was mixed at high speed by rotating at 20000 rpm. After heating to 70 DEG C, 8 wt% of tricresyl phosphate was added and mixed with extreme pressure. After adding 0.5% by weight of fragrance to the mixture, the temperature was lowered to 40 ° C, and 30% by weight of an internal combustion engine oil (GS Caltex Deluxe Gold V 7.5W / 30, Hyundai gear oil 85W / 140) was added and mixed. Ethylene-propylene copolymer (weight average molecular weight 15,000) as 10% by weight of the benzylamine, a clean dispersant, 5% by weight of a silicone antifoaming agent (shinetsu, KS-66, SIMETHICONE with a viscosity of 25 m) 300 mPas 8% by weight, 4% by weight of polymethyl methacrylate (weight average molecular weight 20,000) as a fluid depressant, 0.3% by weight of carbon nanoparticles (average particle diameter 50nm), ultra-high molecular weight polyethylene powder having a weight average molecular weight of 3.8 × 10 ⁶ ( 0.2 wt% of Ticona GmbH, Hostalen GUR 4113) was added and mixed.

The content of each component is summarized in Table 1 below, and measured and shown in Table 3 below.

[Table 1]

Comparative Example 1

The composition was prepared in the same manner as in Example, except that the composition was prepared without using xylene. The content of each component is summarized in Table 2 below, and measured and shown in Table 3 below.

Comparative Example 2

Except for changing the content of each component in Example 1 as in Table 1 to prepare a composition in the same manner.

The content of each component is summarized in Table 2 below, and measured and shown in Table 3 below.

[Table 2]

[Table 3]

As shown in Table 1 above, when the engine was cleaned using the cleaning lubricant composition according to the present invention, the removal rate of carbon monoxide, carbon dioxide, and hydrocarbons was 99% or more. These results indicate that the engine cleaning lubricant according to the present invention. It can be seen that the contaminants accumulated in the engine have an excellent effect on cleaning.

In addition, the cleaning lubricant composition according to the present invention is smoothly lubricated by dissolving and removing carbon sludge adhered to metal surfaces such as a catalyst muffler such as a cylinder head, a carburetor, and an injector of an automobile engine and adsorbed to the inside of the engine, thereby enhancing output. And it was found that there is an effect to reduce the exhaust gas.

Claims (9)

20 to 60 wt% oil for internal combustion engines, 5 to 15 wt% xylene (C ₆ H ₄ (CH ₃ ) ₂ ), 5 to 10 wt% dibutylhydroxytoluene as antioxidant, 5 to 15 benzylamine as clean dispersant 5% by weight of sulfonic acid salt as antirust agent, 5 to 10% by weight of tricresyl phosphate or sulfide terpene as extreme pressure agent, 1 to 8% by weight of silicone antifoaming agent, 5 to 10% by weight of viscosity index improver %, 1 to 5% by weight of polyalkyl (meth) acrylate as the fluidity lowering agent, 1 to 5% by weight of dimethylpolysiloxane as synthetic oil. The method of claim 1,
An internal combustion engine cleaning lubricant composition further comprising 0.1 to 2% by weight of carbon nanoparticles, ultra high molecular weight polyethylene powder having a weight average molecular weight of 1 × 10 ⁶ to 5 × 10 ⁶ , or a mixture thereof. The method of claim 2,
The carbon nanoparticles of the internal combustion engine cleaning lubricant composition using an average particle diameter of 10 ~ 100nm. The method of claim 1,
An internal combustion engine cleaning lubricant composition further comprising 0.1 to 2% by weight of a pigment, a fragrance or a mixture thereof. The method of claim 1,
The silicone-based antifoaming agent cleaning agent composition using an internal combustion engine using simethicone (Simethicone) of viscosity (25 ℃) 250 ~ 2500mPas. The method of claim 1,
The sulfonate salt is an internal combustion engine cleaning lubricant composition is ammonium sulfonate or barium sulfonate. a) dibutyl hydroxytoluene as an antioxidant in the reactor, heated to 50 ~ 70 ℃, and then added by adding a sulfonate salt as a rust inhibitor;
b) heating the mixture of step a) to 80-85 ° C. and then adding and mixing dimethylpolysiloxane with synthetic oil;
c) after cooling the mixture of step b) to 0 ~ 10 ℃, mixing by rotating at high speed to 10000 ~ 30000rpm by adding xylene;
d) heating the mixture of step c) to 65-75 ° C. and then adding and mixing tricresil phosphate with extreme pressure agent;
e) lowering the temperature of the mixture of step d) to 40-45 ° C., adding and mixing oil for an internal combustion engine;
f) mixing the mixture of step e) by adding benzylamine as a clean dispersant, a silicone-based antifoaming agent, an ethylene-propylene copolymer as a viscosity index improver, and polymethyl methacrylate as a fluidity lowering agent;
Method for producing an internal combustion engine cleaning lubricant composition comprising a. 8. The method of claim 7,
The carbon nanoparticles, the weight average molecular weight of 1 × 10 ⁶ ~ 5 × 10 ⁶ Ultra-high molecular weight polyethylene powder or a mixture thereof is added in step f) of the internal combustion engine cleaning lubricant composition. 8. The method of claim 7,
Method of producing an internal combustion engine cleaning lubricant composition is further added to the pigment, the fragrance or a mixture thereof in step d).