Cleaning oil and application thereof

Abstract

The invention is applicable to the technical field of materials, and provides cleaning oil and application thereof, and the cleaning oil is prepared from the following raw materials in percentage by mass: 20-60% of base oil, 10-40% of C10-C20 long-chain organic acid, 0.1-5% of C1-C6 short-chain organic acid and 5-40% of cosolvent. The cleaning oil disclosed by the invention does not corrode metals, and is relatively low in toxicity to human bodies and ecological environment; wherein the C10-C20 long-chain organic acid and the C1-C6 short-chain organic acid are cooperatively used according to a specific proportion, so that the capability of cleaning metal dirt and corrosion products is improved; in addition, attached copper, propellant residues and other dirt left after shooting can be effectively removed, and the problems that an existing cleaning product is poor in firearm cleaning effect, corrosive to metal, harmful to the human body and the natural environment and the like are solved.

Description

Technical Field

[0001] The present application belongs to the field of material technology, and in particular relates to a cleaning oil and an application thereof. Background Art

[0002] In the fields of military, police, hunting and shooting sports, gun maintenance is crucial. Long-term use or storage of guns will cause metal dirt and corrosion products to accumulate inside the gun bore. These impurities will affect the performance and safety of the gun. If not removed in time, they will corrode the gun chamber, shorten the service life of the gun (cannon) barrel, and affect the shooting accuracy. Therefore, effective cleaning oil is needed to clean the gun.

[0003] There are many kinds of gun cleaning oils on the market, but there are some shortcomings, such as unsatisfactory cleaning effect, corrosion to guns, poor environmental protection, etc. For example, some products on the market use weak alkaline water and soapy water solutions to remove gunpowder residues. This method is very slow to clean gunpowder residues, usually takes 1-2 weeks to complete the cleaning, the cleaning liquid has a long residual time, the cleaning effect is poor, and it is easy to cause corrosion on the surface of the gun, and the low temperature resistance is poor. Another commonly used gun cleaning oil is a mixed product using diesel, engine oil, etc. in a certain ratio. Its cleaning effect is limited, and its solubility to the residue inside the gun is limited. Moreover, this type of product contains a large amount of aromatic components, which will greatly increase the usage when the cleaning effect is not good, and is toxic to the human body and the ecological environment. Therefore, it is of great significance to develop a cleaning oil that is efficient, environmentally friendly, and non-corrosive to guns. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a cleaning oil, which aims to solve the problems of existing firearm cleaning oils, such as unsatisfactory cleaning effect, corrosion to metals, and poor environmental protection.

[0005] The embodiment of the present application is implemented as follows: a cleaning oil, characterized in that it includes the following raw materials in percentage by mass:

[0006] Base oil 20-60%, C10-C20 long chain organic acid 10-40%, C1-C6 short chain organic acid 0.1-5% and cosolvent 5-40%;

[0007] Wherein, the C10-C20 long-chain organic acid is obtained by secondary distillation of the C10-C20 long-chain organic acid; wherein, the distillation conditions are: the feed temperature is controlled at 60-125°C through heating by a heat exchanger, the light fraction pre-cutting temperature is controlled at 175-235°C, the liquid level is controlled at 30-50%, the flow rate is set at 1500-2000kg / h, the head fraction distillation is set at a tower top temperature of 120-180°C, a tower bottom temperature of 175-235°C, a rectification temperature of 240-255°C, a liquid level of 30-50%, a rectification receiver setting temperature of 55-85°C, a flow rate of 1900-2300kg / h; and the vacuum degree is set to be greater than 900mmhg. .

[0008] Preferably, the C10-C20 long-chain organic acid is a mixture of oleic acid, stearic acid, palmitic acid and lauric acid;

[0009] Wherein, the carbon chain distribution of the palmitic acid is C16: 33-38%, C18: 62-67%;

[0010] The stearic acid has an acid value of 201-205 mg / g, a chromaticity of <60 Hazen, and a carbon chain distribution of C16: 38-42%, C18: 62-78%;

[0011] The carbon chain distribution of the lauric acid is C12: 10-20%, C14: 80-90%;

[0012] The carbon chain distribution of the oleic acid is C16: 10-20%, C18: 80-90%.

[0013] Another purpose of an embodiment of the present application is to use the above-mentioned cleaning oil in cleaning firearms.

[0014] The cleaning oil provided in the embodiment of the present application is obtained by compounding base oil, C10-C20 long-chain organic acid, C1-C6 short-chain organic acid and co-solvent in a specific proportion to obtain an environmentally friendly, efficient and mild-performance cleaning oil for firearms. It not only does not corrode metals, but also has less toxicity to the human body and the ecological environment. Among them, the C10-C20 long-chain organic acid and the C1-C6 short-chain organic acid are used in a synergistic manner in a specific proportion, which helps to improve the cleaning ability of metal dirt and corrosion products. In addition, the present application can effectively remove copper residues, propellant residues and other dirt remaining after shooting, solve the problems of poor cleaning effect on firearms, corrosiveness to metals, and harm to the human body and the natural environment in existing cleaning products, and can meet the requirements of different task states such as training, duty, and combat, and ensure that firearms are not interfered by residues. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the present application more clear, the present application is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

[0016] In order to solve the problems of existing firearms cleaning oils such as unsatisfactory cleaning effect, corrosion to metals, and poor environmental protection, the embodiments of the present application provide a firearms cleaning oil that is environmentally friendly, efficient, and mild in performance, by compounding a base oil, a C10-C20 long-chain organic acid, a C1-C6 short-chain organic acid, and a co-solvent in a specific proportion. The oil does not corrode metals and is less toxic to the human body and the ecological environment. Among them, the C10-C20 long-chain organic acid and the C1-C6 short-chain organic acid are used in a synergistic manner in a specific proportion, which helps to improve the cleaning ability for metal dirt and corrosion products. In addition, the present application can effectively remove copper residues, propellant residues, and other dirt remaining after shooting, and can meet the requirements of different mission states such as training, duty, and combat, and ensure that firearms are not interfered by residues.

[0017] The present application provides a cleaning oil, comprising the following raw materials in percentage by mass:

[0018] The base oil is 20-60%, the C10-C20 long-chain organic acid is 10-40%, the C1-C6 short-chain organic acid is 0.1-5% and the cosolvent is 5-40%.

[0019] The C10-C20 long-chain organic acid is obtained by secondary distillation of the C10-C20 long-chain organic acid; wherein the distillation conditions are: the feed temperature is controlled at 60-125°C by heating through a heat exchanger, the light fraction pre-cutting temperature is controlled at 175-235°C, the liquid level is controlled at 30-50%, the flow rate is set at 1500-2000kg / h, the head fraction distillation is set at a tower top temperature of 120-180°C, a tower bottom temperature of 175-235°C, a distillation temperature is controlled at 240-255°C, the liquid level is controlled at 30-50%, the distillation receiver is set at a temperature of 55-85°C, and the flow rate is set at 1900-2300kg / h; and the vacuum degree is set to be greater than 900mmhg.

[0020] In the embodiments of the present application, the C10-C20 long-chain organic acid can be one or more of plant-based oleic acid, coconut oil, palmitic acid, lauric acid, linoleic acid, and linolenic acid. In order to ensure the acid purity, the C10-C20 long-chain organic acid needs to be subjected to high-temperature condensation and continuous slag removal and distillation mode processing so that the obtained C10-C20 long-chain organic acid has a specific carbon chain distribution. This application takes the C10-C20 long-chain organic acid as oleic acid, stearic acid, palmitic acid, and lauric acid as examples: by using palmitic acid and stearic acid after hydrolysis and hydrogenation, and oleic acid and lauric acid after refining as raw materials for secondary distillation (distillation conditions are the same as above) and then mixing; the hydrolysis and hydrogenation and refining methods here can be performed with reference to the prior art, and this application does not go into details. The indicators of oleic acid, stearic acid, palmitic acid and lauric acid after secondary distillation are as follows: the acid value of palmitic acid is 201-205 mg / g, the chromaticity is less than 100 Hazen, and the carbon chain distribution is C16: 33-38%, C18: 62-67%; the acid value of stearic acid is 201-205 mg / g, the chromaticity is less than 60 Hazen, and the carbon chain distribution is C16: 38-42%, C18: 62-78%; the acid value of lauric acid is 278-282 mg / g, the chromaticity is less than 200 Hazen, and the carbon chain distribution is C12: 10-20%, C14: 80-90%; the acid value of oleic acid is greater than 180 mg / g, the chromaticity is less than 300 Hazen, and the carbon chain distribution is C16: 10-20%, C18: 80-90%. Although the specific embodiments of the present application are described only by taking oleic acid, stearic acid, palmitic acid, lauric acid, etc. as examples, this should not be used to limit the scope of protection of the present application. Those skilled in the art can obtain the long-chain organic acid raw material required for the present application by secondary distillation of any C10-C20 long-chain organic acid type and compounding it in any ratio.

[0021] In the embodiments of the present application, the base oil can be selected from various base oils commonly used in the market, preferably one or more of various brands of environmentally friendly alkane oils with low volatility and low volatile organic compound (VOCs) content. The base oil is the basic component of the cleaning oil, and its type and composition determine the high and low temperature use range and safety performance of the gun cleaning oil. Therefore, the selected base oil should have excellent high and low temperature performance (-60-85°C), kinematic viscosity (40°C, >9.-50<3700), additive sensitivity (removability>85%, freezing point<-60°C)) and organic solvent compatibility (solubility>50%) and other characteristics.

[0022] It should be noted that, from the perspective of environmental protection, the base oil is preferably an alkane oil produced by hydrogenated soybean plants with a saturated hydrocarbon content greater than 99% and an alkane oil with an aromatic hydrocarbon content less than 0.5%. Specifically, the base oil is a mixture of soybean alkane oil produced by hydrogenated soybean plants with a saturated hydrocarbon content greater than 99% and isoalkane oil with an aromatic hydrocarbon content less than 0.5% in a mass ratio of 2:1. The density of the soybean alkane oil produced by hydrogenated soybean plants with a saturated hydrocarbon content greater than 99% is 0.74-0.82 g / cm 3 , distillation range is 185-225°C; the isoparaffin oil with an aromatic content of <0.5% has a flash point of >62°C, a sulfur content of <0.01%, and a distillation range of 170-225°C. Although the specific embodiments of the present application only take the alkane oil produced by hydrogenated soybean plants with a saturated hydrocarbon content greater than 99% and the alkane oil with an aromatic content of <0.5% as examples for the composition of the base oil, this should not be used to limit the scope of protection of the present application. Those skilled in the art can choose any type of base oil or compound it in any proportion based on actual needs, which has little effect on the cleaning effect of the cleaning oil of the present application.

[0023] In the embodiment of the present application, C1-C6 short-chain organic acid is one or more of formic acid, acetic acid, propionic acid, and citric acid, preferably acetic acid and citric acid. It is worth noting that C1-C6 short-chain organic acid and C10-C20 long-chain organic acid are used in a specific ratio, and have effective cleaning ability for metal dirt and corrosion products; The compounding ratio of C1-C6 short-chain organic acid and C10-C20 long-chain organic acid after specific secondary distillation is the key technical point to determine the cleaning effect of the cleaning oil of the present application. It should be noted that, although the composition of C1-C6 short-chain organic acid in the specific embodiment of the present application is only acetic acid and citric acid as examples, the scope of protection of the present application should not be limited to this. Those skilled in the art can select any C1-C6 short-chain organic acid type (such as formic acid, acetic acid, propionic acid, citric acid, etc.) or compound in any proportion based on actual needs, which has little effect on the cleaning effect of the cleaning oil of the present application.

[0024] In the embodiments of the present application, the cosolvent may be one or more of water, ethanol, methanol, isopropanol, ethylene glycol, propylene glycol, acetone, acetonitrile, dimethylformamide, etc. The cosolvent can improve the dispersibility and solubility of the detached dirt in the cleaning agent, and give full play to the synergistic effect of the cleaning agent in rapid descaling. It should be noted that although the composition of the cosolvent in the specific embodiments of the present application is only based on water, methanol, ethanol, and isopropanol as examples, this should not limit the scope of protection of the present application. Those skilled in the art can choose any type of cosolvent (such as water, ethanol, methanol, isopropanol, ethylene glycol, propylene glycol, acetone, acetonitrile, dimethylformamide, etc.) or compound them in any proportion based on actual needs, which has little effect on the cleaning effect of the cleaning oil of the present application.

[0025] In addition, the cleaning oil provided in the embodiment of the present application is conventionally mixed with base oil, C10-C20 long-chain organic acid, C1-C6 short-chain organic acid and co-solvent in a specific proportion, and specifically can be: adding a specified mass proportion of base oil into a stirring kettle; gradually adding a specified mass proportion of C10-C20 long-chain organic acid and stirring evenly; adding a specified mass proportion of C1-C6 short-chain organic acid and continuing to stir evenly; finally, adding a specified mass proportion of co-solvent, stirring and mixing thoroughly until clarified, to obtain the above-mentioned cleaning oil.

[0026] The embodiments of the present application also provide the use of the above-mentioned cleaning oil in firearms cleaning, and the cleaning oil can be quickly and evenly spread on the metal surface of the gun barrel, wherein C10-C20 long-chain organic acids, C1-C6 short-chain organic acids, co-solvents, etc. can quickly penetrate into the dirt, effectively dissolve and peel off metal dirt and corrosion products, clean quickly and efficiently, and is non-corrosive to the metal surface. In addition, the cleaning oil has a good cleaning effect and is used in small amounts, and has low toxicity to the human body and the ecology.

[0027] Examples of certain embodiments of the present application are given below, which are not intended to limit the scope of the present application.

[0028] In addition, it should be noted that the numerical values ​​given in the following examples are as accurate as possible, but those skilled in the art understand that due to unavoidable measurement errors and experimental operation problems, each number should be understood as an approximate number rather than an absolutely accurate value.

[0029] Preparation of base oil: Soybean alkane oil (density: 0.74-0.82 g / cm 3 , distillation range: 185-225°C) and isoparaffin oil with an aromatic content of <0.5% (flash point>62°C, sulfur content<0.01%, distillation range: 170-225°C) are mixed uniformly at room temperature in a mass ratio of 2:1 and set aside.

[0030] Preparation of C1-C6 short-chain organic acid: Acetic acid and citric acid are mixed uniformly at a mass ratio of 2:1 at room temperature for use.

[0031] The cosolvent is composed of isopropanol and water in a mass ratio of 2:1.

[0032] Example 1: Preparation method of cleaning oil

[0033] Preparation of C10-C20 long-chain organic acids: Palmitic acid and stearic acid after hydrolysis and hydrogenation, and refined oleic acid and lauric acid are used as raw materials. In order to ensure the purity of the acid, high-temperature condensation and continuous slag removal and distillation mode are adopted. The specific distillation conditions are as follows:

[0034] The feed temperature is heated by a heat exchanger and controlled at 80°C, the light fraction pre-cutting temperature is controlled at 175°C, the liquid level is controlled at 30%, the flow rate is set at 1500kg / h, the head fraction distillation is set at a top temperature of 120°C, a bottom temperature of 175°C, the distillation temperature is controlled at 240°C, the liquid level is controlled at 30%, the distillation receiver is set at 55°C, and the flow rate is set at 1900kg / h; the vacuum adopts three-stage injection, and the vacuum degree is set at 980mmhg.

[0035] At a temperature of 80° C., the palmitic acid, stearic acid, lauric acid and oleic acid after the specific distillation are sucked into a stirrer in a mass ratio of 1:1:1:1 and mixed evenly to obtain a C10-C20 long-chain organic acid for standby use.

[0036] Preparation of cleansing oil:

[0037] In this embodiment, the cleaning oil includes the following raw materials in percentage by weight:

[0038] Base oil 20%, C10-C20 long chain organic acid 40%, C1-C6 short chain organic acid 5% and co-solvent 35%;

[0039] Weigh the raw materials according to the above formula; add the base oil in a specified mass proportion into a stirring kettle at room temperature; gradually add C10-C20 long-chain organic acid in a specified mass proportion and stir evenly; add C1-C6 short-chain organic acid in a specified mass proportion at room temperature and continue to stir evenly; finally, add a co-solvent in a specified mass proportion at room temperature, stir and mix thoroughly until clear, and then obtain clean oil.

[0040] Example 2: Preparation method of cleaning oil

[0041] Preparation of C10-C20 long-chain organic acids: Palmitic acid and stearic acid after hydrolysis and hydrogenation, and refined oleic acid and lauric acid are used as raw materials. In order to ensure the purity of the acid, high-temperature condensation and continuous slag removal and distillation mode are adopted. The specific distillation conditions are as follows:

[0042] The feed temperature is heated by a heat exchanger and controlled at 100°C, the light fraction pre-cutting temperature is controlled at 235°C, the liquid level is controlled at 50%, the flow rate is set at 2000kg / h, the head fraction distillation is set to a top temperature of 180°C, a bottom temperature of 235°C, the distillation temperature is controlled at 255°C, the liquid level is controlled at 50%, the distillation receiver is set at 85°C, and the flow rate is set at 2300kg / h; the vacuum adopts three-stage injection, and the vacuum degree is set at 980mmhg.

[0043] At a temperature of 80° C., the palmitic acid, stearic acid, lauric acid and oleic acid after the specific distillation are sucked into a stirrer in a mass ratio of 1:1:1:1 and mixed evenly to obtain a C10-C20 long-chain organic acid for standby use.

[0044] Preparation of cleansing oil:

[0045] In this embodiment, the cleaning oil includes the following raw materials in percentage by weight:

[0046] Base oil 58%, C10-C20 long chain organic acid 11%, C1-C6 short chain organic acid 1% and cosolvent 30%;

[0047] Weigh the raw materials according to the above formula; add the base oil in a specified mass proportion into a stirring kettle at room temperature; gradually add C10-C20 long-chain organic acid in a specified mass proportion and stir evenly; add C1-C6 short-chain organic acid in a specified mass proportion at room temperature and continue to stir evenly; finally, add a co-solvent in a specified mass proportion at room temperature, stir and mix thoroughly until clear, and then obtain clean oil.

[0048] Example 3

[0049] Preparation of C10-C20 long-chain organic acids: Palmitic acid and stearic acid after hydrolysis and hydrogenation, and refined oleic acid and lauric acid are used as raw materials. In order to ensure the purity of the acid, high-temperature condensation and continuous slag removal and distillation mode are adopted. The specific distillation conditions are as follows:

[0050] The feed temperature is controlled at 125°C after heating through a heat exchanger, the light fraction pre-cutting temperature is controlled at 205°C, the liquid level is controlled at 40%, the flow rate is set at 1750kg / h, the head fraction distillation is set to a top temperature of 150°C, a bottom temperature of 205°C, the distillation temperature is controlled at 250°C, the liquid level is controlled at 45%, the distillation receiver is set at 60°C, and the flow rate is set at 2100kg / h; the vacuum adopts three-stage injection, and the vacuum degree is set at 980mmhg.

[0051] At a temperature of 80° C., the palmitic acid, stearic acid, lauric acid and oleic acid after the specific distillation are sucked into a stirrer in a mass ratio of 1:1:1:1 and mixed evenly to obtain a C10-C20 long-chain organic acid for standby use.

[0052] Preparation of cleansing oil:

[0053] In this embodiment, the cleaning oil includes the following raw materials in percentage by weight:

[0054] Base oil 60%, C10-C20 long chain organic acid 30%, C1-C6 short chain organic acid 5% and cosolvent 5%;

[0055] Weigh the raw materials according to the above formula; add the base oil in a specified mass proportion into a stirring kettle at room temperature; gradually add C10-C20 long-chain organic acid in a specified mass proportion and stir evenly; add C1-C6 short-chain organic acid in a specified mass proportion at room temperature and continue to stir evenly; finally, add a co-solvent in a specified mass proportion at room temperature, stir and mix thoroughly until clear, and then obtain clean oil.

[0056] Example 4

[0057] Preparation of C10-C20 long-chain organic acids: Palmitic acid and stearic acid after hydrolysis and hydrogenation, and refined oleic acid and lauric acid are used as raw materials. In order to ensure the purity of the acid, high-temperature condensation and continuous slag removal and distillation mode are adopted. The specific distillation conditions are as follows:

[0058] The feed temperature is controlled at 125°C after heating through a heat exchanger, the light fraction pre-cutting temperature is controlled at 205°C, the liquid level is controlled at 40%, the flow rate is set at 1750kg / h, the head fraction distillation is set to a top temperature of 150°C, a bottom temperature of 205°C, the distillation temperature is controlled at 250°C, the liquid level is controlled at 45%, the distillation receiver is set at 60°C, and the flow rate is set at 2100kg / h; the vacuum adopts three-stage injection, and the vacuum degree is set at 980mmhg.

[0059] At a temperature of 80° C., the palmitic acid, stearic acid, lauric acid and oleic acid after the specific distillation are sucked into a stirrer in a mass ratio of 1:1:1:1 and mixed evenly to obtain a C10-C20 long-chain organic acid for standby use.

[0060] Preparation of cleansing oil:

[0061] In this embodiment, the cleaning oil includes the following raw materials in percentage by weight:

[0062] Base oil 36%, C10-C20 long chain organic acid 20%, C1-C6 short chain organic acid 4% and co-solvent 40%;

[0063] Weigh the raw materials according to the above formula; add the base oil in a specified mass proportion into a stirring kettle at room temperature; gradually add C10-C20 long-chain organic acid in a specified mass proportion and stir evenly; add C1-C6 short-chain organic acid in a specified mass proportion at room temperature and continue to stir evenly; finally, add a co-solvent in a specified mass proportion at room temperature, stir and mix thoroughly until clear, and then obtain clean oil.

[0064] Example 5

[0065] Preparation of C10-C20 long-chain organic acids: Palmitic acid and stearic acid after hydrolysis and hydrogenation, and refined oleic acid and lauric acid are used as raw materials. In order to ensure the purity of the acid, high-temperature condensation and continuous slag removal and distillation mode are adopted. The specific distillation conditions are as follows:

[0066] The feed temperature is controlled at 125°C after heating through a heat exchanger, the light fraction pre-cutting temperature is controlled at 205°C, the liquid level is controlled at 40%, the flow rate is set at 1750kg / h, the head fraction distillation is set to a top temperature of 150°C, a bottom temperature of 205°C, the distillation temperature is controlled at 250°C, the liquid level is controlled at 45%, the distillation receiver is set at 60°C, and the flow rate is set at 2100kg / h; the vacuum adopts three-stage injection, and the vacuum degree is set at 980mmhg.

[0067] At a temperature of 80° C., the palmitic acid, stearic acid, lauric acid and oleic acid after the specific distillation are sucked into a stirrer in a mass ratio of 1:1:1:1 and mixed evenly to obtain a C10-C20 long-chain organic acid for standby use.

[0068] Preparation of cleansing oil:

[0069] In this embodiment, the cleaning oil includes the following raw materials in percentage by weight:

[0070] Base oil 45%, C10-C20 long chain organic acid 28%, C1-C6 short chain organic acid 2% and co-solvent 25%;

[0071] Weigh the raw materials according to the above formula; add the base oil in a specified mass proportion into a stirring kettle at room temperature; gradually add C10-C20 long-chain organic acid in a specified mass proportion and stir evenly; add C1-C6 short-chain organic acid in a specified mass proportion at room temperature and continue to stir evenly; finally, add a co-solvent in a specified mass proportion at room temperature, stir and mix thoroughly until clear, and then obtain clean oil.

[0072] The cleaning oils prepared in the above Examples 1-5 were subjected to quality testing, and the test results are shown in Table 1.

[0073] Table 1

[0074]

[0075] Furthermore, when in use, the cleaning oil prepared in the above Examples 1-5 is evenly applied to the surface and interior of the gun barrel, and the ejection structure is wiped multiple times (50 times) with a wiping cloth. The effect of removing shooting residues is shown in Table 2 below.

[0076] Table 2

[0077]

[0078] During the early research and development process of the present application, it was found that the compounding ratio of C1-C6 short-chain organic acid and C10-C20 long-chain organic acid directly determines the cleaning effect of the cleaning oil. Some comparative examples are provided below to illustrate this phenomenon.

[0079] Comparative Example 1

[0080] The raw materials and preparation method used are the same as those in Example 5, except that:

[0081] In this embodiment, the cleaning oil includes the following raw materials in percentage by weight:

[0082] Base oil 10%, C10-C20 long chain organic acid 50%, C1-C6 short chain organic acid 10%, isopropyl alcohol 20% and water 10%.

[0083] Comparative Example 2

[0084] The raw materials and preparation method used are the same as those in Example 5, except that:

[0085] In this embodiment, the cleaning oil includes the following raw materials in percentage by weight:

[0086] Base oil 60%, C10-C20 long chain organic acid 10%, C1-C6 short chain organic acid 10%, isopropyl alcohol 10% and water 10%.

[0087] Comparative Example 3

[0088] The raw materials and preparation method used are the same as those in Example 5, except that:

[0089] In this embodiment, the cleaning oil includes the following raw materials in percentage by weight:

[0090] 20% base oil, 10% C10-C20 long chain organic acid, 50% C1-C6 short chain organic acid, 10% isopropyl alcohol and 10% water.

[0091] Comparative Example 4

[0092] The raw materials and preparation method used are the same as those in Example 5, except that:

[0093] In this embodiment, the cleaning oil includes the following raw materials in percentage by weight:

[0094] Base oil 10%, C10-C20 long chain organic acid 10%, C1-C6 short chain organic acid 10%, ethanol 30%, isopropanol 20% and water 20%.

[0095] The cleaning oils prepared in the above comparative examples 1-4 were subjected to quality testing, and the test results are shown in Table 3 below.

[0096]

[0097] As can be seen from Table 3, when the compounding ratios of C10-C20 long-chain organic acid and C1-C6 short-chain organic acid in Comparative Examples 1-4 are 50:10, 10:10, and 10:50, respectively, the prepared cleaning oils cannot pass the quality inspection and cannot be used in firearms cleaning.

[0098] The following are some examples and comparative examples of the present application in the preliminary experiments on the composition of C1-C6 short-chain organic acids and C10-C20 long-chain organic acids, wherein the C10-C20 long-chain organic acids used are all distilled by high-temperature condensation and continuous slag discharge and distillation mode, and the distillation conditions are the same as those in Example 5.

[0099] Example 6

[0100] In this embodiment, the cleaning oil includes the following raw materials in percentage by weight:

[0101] 20% soybean paraffin oil produced by hydrogenated soybean plants with a saturated hydrocarbon content greater than 99%, 20% isoparaffin oil with an aromatic hydrocarbon content less than 0.5%, 15% oleic acid, 5% stearic acid, 2% acetic acid, 30% ethanol and 8% water.

[0102] According to the above formula, add alkane oil and aromatic oil into a stirring kettle in sequence at room temperature; gradually add oleic acid and stearic acid at room temperature and stir evenly; add acetic acid at room temperature and continue stirring; finally, add isopropanol and water at room temperature, stir and mix thoroughly until clear, and obtain clean oil.

[0103] When using, apply the cleaning oil to the surface and inside of the firearm, wipe it multiple times (50 times) with a wiping cloth, and the removal rate of shooting residues can reach 95% (mass fraction).

[0104] Example 7

[0105] In this embodiment, the cleaning oil includes the following raw materials in percentage by weight:

[0106] 20% soybean paraffin oil produced by hydrogenated soybean plants with a saturated hydrocarbon content greater than 99%, 30% isoparaffin oil with an aromatic hydrocarbon content less than 0.5%, 15% oleic acid, 6.8% stearic acid, 0.2% citric acid, 20% isopropyl alcohol and 8% water.

[0107] According to the above formula, add alkane oil and aromatic oil into a stirring kettle in sequence at room temperature; gradually add oleic acid and stearic acid at room temperature and stir evenly; add citric acid at room temperature and continue stirring; finally, add isopropanol and water at room temperature, stir and mix thoroughly until clear, and obtain clean oil.

[0108] When in use, apply the cleaning oil to the surface and inside of the firearm, and wipe it multiple times (50 times) with a wiping cloth. The removal rate of shooting residues can reach 88% (mass fraction).

[0109] Comparative Example 5

[0110] In this embodiment, the cleaning oil includes the following raw materials in percentage by weight:

[0111] 20% soybean paraffin oil produced by hydrogenated soybean plants with a saturated hydrocarbon content greater than 99%, 30% isoparaffin oil with an aromatic hydrocarbon content less than 0.5%, 18% oleic acid, 4% stearic acid, 20% isopropyl alcohol and 8% water.

[0112] According to the above formula, alkane oil and aromatic oil are added to a stirring kettle in sequence at room temperature; oleic acid and stearic acid are gradually added at room temperature and stirred evenly; finally, isopropanol and water are added at room temperature, and the mixture is stirred and mixed thoroughly until it is clear to obtain clean oil.

[0113] When in use, apply the cleaning oil to the surface and inside of the firearm, wipe it multiple times (50 times) with a wiping cloth, and the removal rate of shooting residues can reach 78% (mass fraction).

[0114] Comparative Example 6

[0115] In this embodiment, the cleaning oil includes the following raw materials in percentage by weight:

[0116] 50% soybean paraffin oil produced by hydrogenated soybean plants with a saturated hydrocarbon content greater than 99%, 45% isoparaffin oil with an aromatic hydrocarbon content less than 0.5%, and 5% ricinoleic acid.

[0117] According to the above formula, alkane oil and aromatic oil are added into a stirring kettle in sequence at room temperature; ricinoleic acid is gradually added at room temperature and stirred evenly to obtain clean oil.

[0118] When using, apply the cleaning oil on the surface and inside of the firearm, wipe it multiple times (50 times) with a wiping cloth, and the removal rate of shooting residues can reach 50% (mass fraction).

[0119] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

[0120] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A cleaning oil, characterized in that: The following raw materials are included in mass percentage: Base oil 20-60%, C10-C20 long chain organic acid 10-40%, C1-C6 short chain organic acid 0.1-5% and cosolvent 5-40%; The C10-C20 long-chain organic acid is obtained by secondary distillation of the C10-C20 long-chain organic acid; wherein the distillation conditions are: the feed temperature is controlled at 60-125°C by heating through a heat exchanger, the light fraction pre-cutting temperature is controlled at 175-235°C, the liquid level is controlled at 30-50%, the flow rate is set at 1500-2000kg / h, the head fraction distillation is set at a tower top temperature of 120-180°C, a tower bottom temperature of 175-235°C, a distillation temperature is controlled at 240-255°C, the liquid level is controlled at 30-50%, the distillation receiver is set at a temperature of 55-85°C, and the flow rate is set at 1900-2300kg / h; and the vacuum degree is set to be greater than 900mmhg.

2. The cleaning oil according to claim 1, characterized in that The C10-C20 long-chain organic acid is one or more of oleic acid, coconut acid, palmitic acid, lauric acid, linoleic acid, and linolenic acid.

3. The cleaning oil according to claim 1, characterized in that The C10-C20 long-chain organic acid is one or more of oleic acid, stearic acid, palmitic acid, and lauric acid.

4. The cleaning oil according to claim 1, characterized in that The C1-C6 short-chain organic acid is one or more of formic acid, acetic acid, propionic acid and citric acid.

5. The cleaning oil according to claim 1, characterized in that The C1-C6 short-chain organic acid is prepared by mixing acetic acid and citric acid in a mass ratio of 2:

1.

6. The cleaning oil according to claim 1, characterized in that The base oil is soybean alkane oil produced by hydrogenated soybean plants with a saturated hydrocarbon content greater than 99% and isoalkane oil with an aromatic hydrocarbon content less than 0.5%.

7. The cleaning oil according to claim 6, characterized in that The base oil is a mixture of an alkane oil produced from a hydrogenated soybean plant with a saturated hydrocarbon content greater than 99% and an alkane oil with an aromatic hydrocarbon content less than 0.5% in a mass ratio of 2:1; The density of the alkane oil produced by hydrogenated soybean plants with a saturated hydrocarbon content greater than 99% is 0.74-0.82 g / cm 3 , distillation range is 185-225℃; The alkane oil with an aromatic content of less than 0.5% has a flash point of more than 62°C, a sulfur content of less than 0.01%, and a distillation range of 170-225°C.

8. The cleaning oil according to claim 1, characterized in that The co-solvent is one or more of water, ethanol, methanol, isopropanol, ethylene glycol, propylene glycol, acetone, acetonitrile and dimethylformamide.

9. The cleaning oil according to claim 1, characterized in that The co-solvent is one or more of water, methanol, ethanol and isopropanol.

10. Use of the cleaning oil according to any one of claims 1 to 9 in cleaning firearms.

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