阅读说明：本技术 一种润滑油清洗剂及其制备方法和一种清洁型润滑油组合物 (Lubricating oil cleaning agent, preparation method thereof and clean lubricating oil composition ) 是由 霍鑫 夏科峰 张金荣 李华君 李梦玲 史志宇 于 2019-11-01 设计创作，主要内容包括：本发明提供了一种润滑油清洗剂,包括：1)55.5-95.0wt.％的烷基磺酸琥珀酸钠,2)5.0-44.0wt.％的聚醚胺,所述聚醚胺的重均分子量范围为800-2000g/mol,以所述润滑油清洗剂的总重按100wt.％计。所述润滑油清洗剂溶解水分和油污清洁效果均较好,并且在清洗过程中,不会破坏发动机油道内的油膜,避免机件的磨损。本发明还提供一种清洁型润滑油组合物,包括润滑油和上述润滑油清洗剂,所述清洁型润滑油组合物本身同时具有较好的溶解水分和油污清洁的效果。(The invention provides a lubricating oil cleaning agent, which comprises: 1)55.5 to 95.0 wt.% of sodium alkylsulfosuccinate, 2)5.0 to 44.0 wt.% of polyetheramine, the polyetheramine having a weight average molecular weight in the range of 800-2000g/mol, based on 100 wt.% of the total weight of the lubricant oil detergent. The lubricating oil cleaning agent has good water dissolution and oil stain cleaning effects, and can not damage an oil film in an engine oil channel in the cleaning process, thereby avoiding the abrasion of parts. The invention also provides a clean lubricating oil composition, which comprises lubricating oil and the lubricating oil cleaning agent, and the clean lubricating oil composition has good effects of dissolving water and cleaning oil stains.)

1. A lubricant cleaner, comprising:

1)55.5-95.0 wt.% of sodium alkyl sulfosuccinate, based on 100 wt.% of the total weight of the lubricant oil cleaner, having the formula:

wherein R is C6 to C9 alkyl;

2)5.0-44.0 wt.% of polyetheramine, wherein the polyetheramine has the structural formula shown in the specification, based on 100 wt.% of the total weight of the lubricating oil detergent:

the weight average molecular weight of the polyether amine is in the range of 800-2000 g/mol.

2. The lubricant detergent of claim 1, wherein the polyetheramine has a weight average molecular weight in the range of 800-1200 g/mol.

3. The lubricant cleaner of claim 1 or 2, wherein the sodium alkylsulfonate succinate is present in an amount of from 75.0 to 85.0 wt.%, based on 100 wt.% of the total weight of the lubricant cleaner.

4. The lubricant cleaner of claim 1 or 2, wherein the polyetheramine is present in an amount of 15.0 to 25.0 wt.%, based on 100 wt.% of the total weight of the lubricant cleaner.

5. The lubricant cleaner of claim 1 or claim 2, further comprising 0 to 30 wt.% of a diluent, based on 100 wt.% of the total lubricant cleaner weight, wherein the flash point is required to be between 60 degrees celsius and 110 degrees celsius.

6. A method for preparing a lubricating oil detergent comprises the following steps:

the sodium alkylsulfonate succinate of any one of claims 1 to 5 is uniformly mixed with the polyether amine to obtain the lubricating oil cleaning agent.

7. A cleaning type lubricating oil composition comprising a lubricating oil and the lubricating oil detergent as claimed in any one of claims 1 to 5.

8. The clean lubricating oil composition of claim 7, wherein the amount of the lubricating oil detergent is 7 wt.% or more, based on 100 wt.% of the total weight of the clean lubricating oil composition.

9. The clean lubricating oil composition according to claim 7, wherein the amount of the lubricating oil detergent is 10 wt.% or more, based on 100 wt.% of the total weight of the clean lubricating oil composition.

Technical Field

The invention relates to the field of lubricating oil cleaning agents, in particular to an engine lubricating oil cleaning agent, a preparation method thereof and a clean lubricating oil composition.

Background

Each part of the automobile lubricating system can be abraded in different degrees in the moving process, so that abrasive dust is generated, such as metal powder, the abrasive dust is suspended in engine oil and gradually mixed with other impurities to generate oil sludge which is attached to an oil duct and an oil hole and even blocks the oil duct, so that the oil supply of an engine is not smooth, the lubrication is difficult, and the larger abrasion is caused. In addition, the oxidation of the engine oil at high temperatures may produce varnish and/or carbon deposits which adhere to the piston, reducing engine power and increasing oil consumption.

At present, a natural discharging method is generally adopted for replacing engine oil, but only part of the engine oil can be discharged, new lubricating oil is directly polluted after being injected, the new lubricating oil circulates for a long time, and the service life of an engine is influenced by oil sludge deposition at the bottom of the engine and a crankcase, so that the inside of the engine is regularly and thoroughly cleaned, and the long-term stable and efficient operation of the engine is ensured.

The internal cleaning agent products of the engine available for car owners to select in the market at present are divided into two main categories: lubricating oil-based cleaners and solvent-based cleaners. CN103484274 (formerly known, etc.) discloses a cleaning agent based on a lubricating oil, which is similar to lubricating oil in structure, has good compatibility with lubricating oil, can provide good oil film protection, but has poor cleaning effect. CN103045328 (chengchun, etc.) discloses a solvent-based cleaning agent, which is a product based on various solvents, and has a good cleaning effect, but the oil film between the parts is washed away in the cleaning process, so that the parts are not lubricated and are worn.

In addition, water can enter the engine oil many times, and the water can emulsify the engine oil, reduce the viscosity of the engine oil and greatly reduce the lubricating effect. The problem that the engine burns the axle bush is easily caused or the serious abrasion of machinery is caused, the existing lubricating oil base and solvent type cleaning agent can not well solve the problem that the water in the engine oil is dissolved and discharged, and meanwhile, the cleaning effect is achieved, and the lubricating oil cleaning agent is needed at present, so that the lubricating oil cleaning agent has a certain effect of dissolving the water in the engine oil on the basis of ensuring the good cleaning effect.

Disclosure of Invention

The invention aims to provide a lubricating oil cleaning agent, which has good oil film protection effect on the basis of ensuring good cleaning effect on water and oil stain at the same time.

According to one aspect of the present invention, there is provided a lubricant cleaner comprising:

1)55.5-95.0 wt.% of sodium alkyl sulfosuccinate, based on 100 wt.% of the total weight of the lubricant oil cleaner, having the formula:

wherein R is C6 to C9 alkyl;

2)5.0-44.0 wt.% of polyetheramine, wherein the polyetheramine has the structural formula shown in the specification, based on 100 wt.% of the total weight of the lubricating oil detergent:

the weight average molecular weight of the polyether amine is in the range of 800-2000 g/mol.

In the lubricating oil cleaning agent provided by the embodiment of the invention, the specific sodium alkylsulfonate succinate and the specific polyether amine are selected and the proportion of the sodium alkylsulfonate succinate and the polyether amine is adjusted, so that the obtained lubricating oil cleaning agent has good effects of dissolving water and cleaning oil stains. Moreover, the lubricating oil cleaning agent does not contain solvent, so that an oil film in an engine oil channel cannot be damaged in the cleaning process, and the abrasion of parts is avoided.

According to another aspect of the present invention, the present invention provides a method for preparing a lubricant detergent, comprising the steps of:

and (3) uniformly mixing the sodium alkyl sulfosuccinate and the polyether amine to obtain the lubricating oil cleaning agent.

The lubricating oil cleaning agent which has good effects of simultaneously cleaning dissolved water and oil stains can be prepared by the method.

According to another aspect of the present invention, there is provided a cleaning type lubricating oil composition comprising a lubricating oil and the above-mentioned lubricating oil detergent.

The clean lubricating oil composition disclosed by the embodiment of the invention uses the lubricating oil cleaning agent with a special formula, so that the clean lubricating oil composition has good effects of dissolving water and cleaning oil stains.

The above summary is not intended to describe each disclosed embodiment of every implementation of the present invention. The foregoing and further features and advantages of embodiments of the present invention will become more apparent from the following more particular description of exemplary embodiments, as illustrated in the accompanying drawings.

Detailed Description

It is to be understood that other various embodiments can be devised and modified by those skilled in the art in light of the teachings herein without departing from the scope or spirit of the invention. The following detailed description is, therefore, not to be taken in a limiting sense.

Unless otherwise indicated, all numbers expressing feature sizes, quantities, and physical characteristics used in the specification and claims are to be understood as being modified in all instances by the term "about". Accordingly, unless indicated to the contrary, the numerical parameters set forth in the foregoing specification and attached claims are approximations that can be suitably varied by those skilled in the art in seeking to obtain the desired properties utilizing the teachings disclosed herein. The use of numerical ranges by endpoints includes all numbers within that range and any range within that range, for example, 1, 2, 3, 4, and 5 includes 1, 1.1, 1.3, 1.5, 2, 2.75, 3, 3.80, 4, and 5, and the like.

Lubricant detergent

A lubricant cleaner, comprising:

1)55.5-95.0 wt.% of sodium sulfosuccinate, based on 100 wt.% of the total weight of the lubricant oil cleaner, having the formula:

wherein R is C6 to C9 alkyl;

2)5.0-44.0 wt.% of polyetheramine, wherein the polyetheramine has the structural formula shown in the specification, based on 100 wt.% of the total weight of the lubricating oil detergent:

the weight average molecular weight of the polyether amine is in the range of 800-2000 g/mol.

Sodium alkyl sulfosuccinate is a surfactant that solubilizes trace amounts of water in the lubricating oil and drains the water along with the lubricating oil. The sodium alkylsulfosuccinate is a polymer having the above-mentioned functional group of sodium sulfosuccinate, wherein R is an alkyl group of C6 to C9, and the solubilizing effect on moisture is deteriorated if the C number is less than 6 or if the C number is more than 9, and the sodium sulfosuccinate and derivatives thereof may be selected from sodium diisooctyl succinate sulfonate, 1, 4-dihexyl sulfosuccinate sodium salt and 1, 4-bis (trimethylhexyl) sodium sulfosuccinate, in an amount of 55.5 to 95.0 wt.%, preferably 75.0 to 85.0 wt.%, based on 100 wt.% of the total weight of the lubricant oil detergent, and the water removing effect of the resulting lubricant oil is deteriorated if the amount thereof is less than 55.5 wt.%, and the degreasing effect of the resulting lubricant oil detergent is deteriorated if the amount thereof is more than 95.0 wt.%.

The polyether amine has the weight average molecular weight of 800-.

Further, the lubricant oil detergent may further include 0-30.0 wt.% of a diluent, and when the diluent content is more than 30.0 wt.%, based on 100 wt.% of the total weight of the lubricant oil detergent, the moisture removal and/or stain removal performance of the lubricant oil detergent may be deteriorated. The flash point range of the diluent is 60-110 ℃, when the flash point of the diluent is less than 60 ℃, the application risk is increased due to the excessively low flash point, especially the risk of deflagration, when the flash point of the diluent is more than 110 ℃, the product cleaning effect is reduced, and the diluent can be selected from cycloalkane or alkane.

Preparation method of lubricating oil cleaning agent

The method for preparing the lubricating oil cleaning agent provided by the invention comprises the following steps:

and (3) uniformly mixing the sodium alkyl sulfosuccinate and the polyether amine to obtain the lubricating oil cleaning agent.

The description of the lubricating oil cleaning agent is detailed in the section of 'lubricating oil cleaning agent' in the specification. The lubricating oil cleaning agent can dissolve water and has a good cleaning effect on oil stains.

Clean lubricating oil composition

The clean lubricating oil composition provided by the invention comprises lubricating oil and the lubricating oil cleaning agent.

The lubricating oil is not particularly limited, and may be an engine oil (e.g., gasoline engine oil or diesel engine oil), or a semisynthetic or fully synthetic base oil.

The content of the lubricating oil detergent is 7-99 wt.%, preferably 10-99 wt.%, based on 100 wt.% of the total weight of the cleaning type lubricating oil composition. When the content of the lubricant detergent is 7 wt.% or less, the cleaning type lubricating oil composition is poor in water-dissolving and oil stain-cleaning effects.

The description of the lubricating oil cleaning agent is detailed in the section of 'lubricating oil cleaning agent' in the specification. The clean lubricating oil composition has good effects of dissolving water and cleaning oil stains.

The present invention provides a plurality of preferred embodiments regarding a lubricant detergent, a method for producing the same, and a clean lubricant composition.

Preferred embodiment 1 is a lubricant detergent comprising:

1)55.5-95.0 wt.% of sodium alkyl sulfosuccinate, based on 100 wt.% of the total weight of the lubricant oil cleaner, having the formula:

wherein R is C6 to C9 alkyl;

2)5.0-44.0 wt.% of polyetheramine, wherein the polyetheramine has the structural formula shown in the specification, based on 100 wt.% of the total weight of the lubricating oil detergent:

the weight average molecular weight of the polyether amine is in the range of 800-2000 g/mol.

Preferred embodiment 2 is the lubricating oil detergent of preferred embodiment 1, wherein the sodium alkylsulfonate succinate is present in an amount of 75.0 to 85.0 wt.%, based on 100 wt.% of the total weight of the lubricating oil detergent.

Preferred embodiment 3 is the lubricant detergent of preferred embodiment 1 or 2, wherein the polyether amine has a weight average molecular weight in the range of 800-1200 g/mol.

Preferred embodiment 4 is the lubricant cleaner of any one of preferred embodiments 1-3, wherein the polyetheramine is present in an amount of 15.0 to 25.0 wt.%, based on 100 wt.% of the total weight of the lubricant cleaner.

Preferred embodiment 5 is any one of the lubricant detergents of preferred embodiments 1-4 further comprising 0-30.0 wt.% of a diluent, based on 100 wt.% of the total weight of the lubricant detergent, wherein the flash point is required to be between 60 degrees celsius and 110 degrees celsius.

Preferred embodiment 6 is a method for preparing a machine oil detergent, comprising the steps of:

the sodium alkylsulfonate succinate described in any one of preferred embodiments 1 to 5 and the polyether amine are uniformly mixed in a certain ratio to obtain the lubricating oil detergent.

Preferred embodiment 7 is a cleaning type lubricating oil composition comprising a lubricating oil and the lubricating oil detergent as described in any one of preferred embodiments 1 to 5.

Preferred embodiment 8 is the clean lubricating oil composition of preferred embodiment 7, wherein the amount of the lubricating oil detergent is 7 wt.% or more, based on 100 wt.% of the total weight of the clean lubricating oil composition.

Preferred embodiment 9 is the clean lubricating oil composition of preferred embodiments 7 or 8, wherein the amount of the lubricating oil detergent is 10 wt.% or more, based on 100 wt.% of the total weight of the clean lubricating oil composition.

Examples

Objects and advantages of this disclosure are further illustrated by the following non-limiting examples, but the particular materials and amounts thereof recited in these examples, as well as other conditions and details, should not be construed to unduly limit this disclosure.

The raw materials used in the examples of the present invention and the comparative examples are shown in table 1 below.

Table 1 raw materials used in examples and comparative examples

Wherein PEA-1000, PEA-1200 and PEA-800 have the structural formula

The lubricating oil detergents provided in the examples and comparative examples were evaluated for their solubility in water, and thus their ability to remove water from lubricating oil, primarily by a solubility test, and their cleaning performance on oil stains was further evaluated by an oil stain cleaning rate test.

Test method

Solubility test

1000 grams of a test oil, a 3M full synthetic engine oil having a viscosity model of 0W-40, was added to the beaker.

To a beaker containing 1000 grams of the test oil was added N grams of deionized water, and the amount of deionized water added to the beaker was designated "N" (see below for the equation for the calculation of solvency).

The test liquid was then added to the beaker and the mechanical stirring was switched on using a conventional stirrer and stirred at a speed of 400 rpm for 5 minutes.

Stopping stirring, then observing the dissolution condition of water, and recording the amount of the added test liquid if the mixed liquid is clear and transparent; if the mixture is still cloudy, the addition of the test liquid is continued until the mixture is clear and transparent, and the amount of test liquid added at this point is recorded. The total amount of test liquid added to obtain a clear and transparent mixture was recorded as M grams (see the equation for the calculation of the dissolving power below).

Calculation of the dissolving power

The dissolving power is calculated by the following formula:

wherein S is the dissolving power, M is the adding amount of the test liquid, and N is the adding amount of the deionized water.

The grade of the dissolving power is shown in Table 1, wherein A is the highest grade and D is the lowest grade, and the dissolving power is approved when B and above are reached in the invention.

TABLE 1

Oil contamination cleaning rate test

Preparation of oil stain

200 grams of a Shell (Tianjin) lubricating oil Co., Ltd, a machine oil having a viscosity model number of helix super 10W-40 was added to a clean 1000ml beaker.

The beaker was heated to 300 degrees celsius with a conventional hotplate and the motor oil was stirred with a magnetic stirrer. The stirring speed was set at 800 n/min.

10 grams of # 1 carnauba wax was added to the beaker with stirring.

The temperature was maintained at 300 degrees celsius for 72 hours, after which the heating was stopped. And when the temperature is cooled to room temperature, obtaining oil stains, and storing the oil stains in a refrigerator at the temperature of-18 ℃ for later use.

Preparation of glass sheets

Glass plates having dimensions of 76mm by 25mm by 4mm were prepared. 2 glass plates were prepared for each test. The blank glass plate was weighed and the weight recorded as m₀。

The oil stain was removed from the refrigerator and heated to 60 degrees celsius. Then, the oil was dropped on the glass plate with a dropper, and then cooled to room temperature. Then weighed and the weight is recorded as m₁。

Cleaning of

The greasy-stained glass plate was placed in a 500ml beaker containing about 450ml of the test liquid, and the beaker was placed under a stirring device having a stirring paddle and two stirring blades at one end of the paddle.

The stirring blade was immersed into the test liquid at a distance of 50ml from the bottom of the beaker.

The stirring blade was started and the stirring speed was maintained at 400 n/min.

The ambient temperature was maintained at room temperature for a test time of 60 s.

Weighing the cleaned glass plate

After washing, the glass plate was placed in a beaker filled with petroleum ether for 1min, then removed and placed in a drying fume hood for 1 h. The glass plate was removed, cooled to room temperature and the weight was measured and recorded as m₂。

Oil contamination level calculation

The oil stain cleaning rate was calculated according to the following formula:

oil stain cleaning rate (m)₁-m₂)÷(m₁-m₀)×100％

The evaluation criteria for oil stain removal performance are shown in table 2 below, where 1 is the highest grade and 5 is the lowest grade, and in the present invention, the cleaning power grade is acceptable to 2 or more.

TABLE 2

Oil stain cleaning rate%	Grade of cleaning power
		0-25	5
25-50	4
		50-70	3
70-85	2
		85-100	1

Preparation of lubricating oil detergent test liquid

And (3) uniformly mixing sodium alkyl sulfosuccinate, polyether amine and a diluent according to the weight ratio shown in the table 3 to obtain the lubricating oil cleaning agent.

Examples 1 to 10(Ex.1 to Ex.10)

The sodium alkyl sulfosuccinate (S-8, S-6 or S-9) and the polyether amine (PEA-1000, PEA-1200 or PEA-800) were mixed uniformly in the weight ratios shown in Table 3 to obtain the lubricant oil detergents.

Examples 11 to 14(Ex.11 to Ex.14):

the S-8 and PEA-1000 are uniformly mixed according to the weight proportion shown in the table 3, and then the diluent (D60, QYX95 or D110) is added according to the weight proportion shown in the table 3 and uniformly mixed to obtain the lubricating oil cleaning agent.

TABLE 3 formulation of examples and performance of the lubricating oil cleaners prepared

Examples 15-18 (Ex.15-Ex.18):

10 grams of the lubricant oil cleaner prepared in example Ex.6 was mixed with 90 grams of different types of fully synthetic engine oils in the weight ratios shown in Table 5 to provide a clean lubricant oil composition;

as can be seen from Table 3, the lubricating oil detergents provided in examples Ex.1-Ex.14 all have a solvency rating of B or higher and a grease cleaning power rating of 2 or higher, so that the lubricating oil detergents provided have good water-soluble and grease cleaning effects.

Comparative examples CE1-CE 8:

the sodium alkyl sulfosuccinate (S-8, S-5 or S-10) and the polyether amine (PEA-1000 or M-2070) were mixed uniformly in the weight ratios shown in Table 4 to obtain a lubricant detergent.

Comparative example CE 9:

a commercial product from luborun corporation, model LZ 55110.

Comparative examples CE10-CE 13:

the engine oils used in the configurations of examples Ex.15-Ex.18 were used.

TABLE 4 formulation and performance of the lubricating oil detergents prepared in example Ex.6 and comparative examples CE1-CE9

As can be seen from Table 4, only comparative example CE3 had a solvency rating of A, and the other CE1-CE2 and CE4-CE9 had C or D, but CE3 had a detergency rating of 3, which was not acceptable, and thus the lubricating oil detergent provided according to comparative example CE1-CE9 had a solvency rating and a detergency rating which were not acceptable at the same time, and thus had not both good effects of dissolving water and cleaning greasy dirt.

TABLE 5 formulation and properties of lubricating oil compositions prepared in examples Ex.15-Ex.18 and comparative examples CE10-CE13

As can be seen from Table 5, the lubricant detergents added are very close to the physical and chemical indexes of the lubricant, so that the lubricant detergents are considered to have little risk in use.

Although the foregoing detailed description contains many specific details for the purpose of illustration, it will be appreciated by those of ordinary skill in the art that numerous variations, alterations, substitutions and alterations to these details are within the scope of the invention as claimed. Therefore, the disclosure described in the detailed description does not impose any limitation on the invention as claimed. The proper scope of the invention should be determined by the appended claims and their proper legal equivalents. All cited references are incorporated herein by reference in their entirety.