A cleaning oil and its use

Abstract

The application belongs to the technical field of material and provides a cleaning oil and application thereof, which comprises the following raw materials in percentage by mass: 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 cleaning oil is not only free of corrosion to metal, but also has less toxicity to human body and ecological environment; wherein, the C10-C20 long-chain organic acid and the C1-C6 short-chain organic acid are used in a specific ratio to improve the cleaning capacity for metal dirt and corrosion products; in addition, the application can effectively remove the residual copper, gunpowder residues and other dirt after shooting, and solve the problems of poor cleaning effect, corrosion to metal, harm to human body and natural environment and the like in the existing cleaning products.

Description

Technical Field

[0001] This application belongs to the field of materials technology, and in particular relates to a cleaning oil and its application. Background Technology

[0002] In military, police, hunting, and shooting sports, firearm maintenance is crucial. Prolonged use or storage of firearms can lead to the accumulation of metallic grime and corrosion products inside the bore. These impurities can affect the performance and safety of the firearm; if not removed promptly, they can corrode the barrel, shorten its lifespan, and impair shooting accuracy. Therefore, effective cleaning oils are necessary to clean firearms.

[0003] Currently, there are many types of gun cleaning oils on the market, but they have some shortcomings, such as unsatisfactory cleaning effect, corrosive effect on firearms, and poor environmental friendliness. For example, some products on the market use weak alkaline water or soapy water solutions to remove gunpowder residue. This method is particularly slow, usually requiring 1-2 weeks to complete the cleaning process. The cleaning solution has a long residual time, resulting in poor cleaning effect and easily causing corrosion on the surface of firearms. It also has poor low-temperature resistance. Another commonly used gun cleaning oil is a mixture of diesel oil, engine oil, etc., in a certain proportion. Its cleaning effect is limited, its solubility for residue inside firearms is limited, and these products contain a large amount of aromatic hydrocarbons. When the cleaning effect is poor, the amount used will greatly increase, which is toxic to human health and the environment. Therefore, it is of great significance to develop a highly efficient, environmentally friendly, and non-corrosive gun cleaning oil. Summary of the Invention

[0004] The purpose of this application is to provide a cleaning oil that addresses the problems of unsatisfactory cleaning effect, corrosive effect on metals, and poor environmental performance of existing gun cleaning oils.

[0005] This application embodiment is implemented as follows: a cleaning oil, characterized in that it comprises the following raw materials in weight percentages:

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

[0007] The C10-C20 long-chain organic acid is obtained by double distillation of the C10-C20 long-chain organic acid. The distillation conditions are as follows: feed temperature controlled at 60-125℃ via heat exchanger; light fraction pre-cutting temperature controlled at 175-235℃; liquid level controlled at 30-50%; flow rate set at 1500-2000 kg / h; head fraction distillation set at top temperature 120-180℃ and bottom temperature 175-235℃; rectification temperature controlled at 240-255℃; liquid level controlled at 30-50%; rectification receiver set temperature 55-85℃; flow rate set at 1900-2300 kg / h; vacuum degree set greater than 900 mmHg.

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

[0009] The palmitic acid has a carbon chain distribution of C16: 33-38% and C18: 62-67%.

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

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

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

[0013] Another objective of this application is the application of the above-mentioned cleaning oil in firearm cleaning.

[0014] The cleaning oil provided in this application is an environmentally friendly, efficient, and mild cleaning oil for firearms, obtained by compounding base oil, C10-C20 long-chain organic acids, C1-C6 short-chain organic acids, and co-solvents in a specific ratio. It not only does not corrode metals but also has low toxicity to humans and the environment. The synergistic use of C10-C20 long-chain organic acids and C1-C6 short-chain organic acids in a specific ratio helps to improve the cleaning ability of metal dirt and corrosion products. In addition, this application can effectively remove residual copper, propellant residues, and other dirt after firing, solving the problems of poor cleaning effect on firearms, corrosiveness to metals, and harm to humans and the natural environment in existing cleaning products. It can meet the requirements of different mission states such as training, duty, and combat, and ensure that firearms are not interfered with by residues. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0016] This application addresses the problems of unsatisfactory cleaning effects, corrosive effects on metals, and poor environmental performance of existing firearm cleaning oils. It provides an environmentally friendly, efficient, and mild firearm cleaning oil formulated by compounding base oil, C10-C20 long-chain organic acids, C1-C6 short-chain organic acids, and co-solvents in a specific ratio. This oil not only does not corrode metals but also has low toxicity to humans and the environment. The synergistic use of C10-C20 long-chain organic acids and C1-C6 short-chain organic acids in a specific ratio helps improve the cleaning ability of metal contaminants and corrosion products. Furthermore, this application can effectively remove residual copper, propellant residues, and other contaminants after firing, meeting the requirements of different mission states such as training, duty, and combat, and ensuring that firearms are not affected by residues.

[0017] This application provides a cleaning oil comprising the following raw materials by weight percentage:

[0018] Base oil 20-60%, C10-C20 long-chain organic acids 10-40%, C1-C6 short-chain organic acids 0.1-5%, and co-solvent 5-40%.

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

[0020] In this embodiment, the C10-C20 long-chain organic acid can be one or more of plant-based oleic acid, coconut oil acid, palmitic acid, lauric acid, linoleic acid, and linolenic acid. To ensure acid purity, the C10-C20 long-chain organic acid needs to be treated with high-temperature condensation and continuous slag discharge and distillation to ensure that the obtained C10-C20 long-chain organic acid has a specific carbon chain distribution. This application takes oleic acid, stearic acid, palmitic acid, and lauric acid as examples of C10-C20 long-chain organic acids: they are obtained by double distillation (distillation conditions as described above) using hydrolyzed and hydrogenated palmitic acid and stearic acid, and refined oleic acid and lauric acid as raw materials; the hydrolysis and hydrogenation and refining methods can be referred to the prior art and will not be described in detail here. The properties of oleic acid, stearic acid, palmitic acid, and lauric acid after double distillation are as follows: palmitic acid has an acid value of 201–205 mg / g, a color intensity of <100 Hazen, and a carbon chain distribution of C16: 33–38% and C18: 62–67%; stearic acid has an acid value of 201–205 mg / g, a color intensity of <60 Hazen, and a carbon chain distribution of C16: 38–42% and C18: 62–78%; lauric acid has an acid value of 278–282 mg / g, a color intensity of <200 Hazen, and a carbon chain distribution of C12: 10–20% and C14: 80–90%; oleic acid has an acid value of >180 mg / g, a color intensity of <300 Hazen, and a carbon chain distribution of C16: 10–20% and C18: 80–90%. Although the specific embodiments of this application are only illustrated using oleic acid, stearic acid, palmitic acid, lauric acid, etc. as examples, they should not be used to limit the scope of protection of this application. Those skilled in the art can obtain the long-chain organic acid raw materials required by this application by performing a second distillation on any C10-C20 long-chain organic acid and compounding it in any ratio.

[0021] In this application embodiment, the base oil can be selected from various commercially available base oil types, preferably one or more of environmentally friendly alkane oils with low volatility and low volatile organic compound (VOC) content. Base oil is a fundamental component of cleaning agents, and its type and composition determine the high and low temperature operating range and safety performance of the gun cleaning oil. Therefore, the selected base oil should possess excellent high and low temperature performance (-60-85℃), kinematic viscosity (40℃, >9; -50 <3700), additive sensitivity (removal rate >85%, pour point <-60℃), and organic solvent compatibility (solubility >50%).

[0022] It should be noted that, for environmental protection reasons, the preferred base oil is alkane oil produced from hydrogenated soybean plants with a saturated hydrocarbon content greater than 99% and alkane oil with an aromatic hydrocarbon content less than 0.5%. Specifically, the base oil can be a mixture of soybean alkane oil produced from hydrogenated soybean plants with a saturated hydrocarbon content greater than 99% and isoparaffinic alkane oil with an aromatic hydrocarbon content less than 0.5% by mass ratio of 2:1. The density of the soybean alkane oil produced from hydrogenated soybean plants with a saturated hydrocarbon content greater than 99% is 0.74-0.82 g / cm³. 3 The distillation range is 185-225℃; the isoparaffinic oil with an aromatic content of <0.5% has a flash point >62℃, a sulfur content <0.01%, and a distillation range of 170-225℃. Although the specific embodiments of this application only use alkane oil produced from hydrogenated soybean plants with a saturated hydrocarbon content greater than 99% and alkane oil with an aromatic content of <0.5% as examples of base oil composition, this should not limit the scope of protection of this application. Those skilled in the art can select any type of base oil or blend it in any proportion based on actual needs, with minimal impact on the cleaning effect of the cleaning oil of this application.

[0023] In the embodiments of this application, the C1-C6 short-chain organic acids are one or more of formic acid, acetic acid, propionic acid, and citric acid, preferably acetic acid and citric acid. It is worth noting that the combination of C1-C6 short-chain organic acids and C10-C20 long-chain organic acids in a specific ratio has an effective cleaning ability against metal dirt and corrosion products; the compounding ratio of C1-C6 short-chain organic acids to C10-C20 long-chain organic acids after specific double distillation is a key technical point determining the cleaning effect of the cleaning oil of this application. It should be noted that although the specific embodiments of this application only use acetic acid and citric acid as examples of the composition of C1-C6 short-chain organic acids, this should not be used to limit the scope of protection of this application. Those skilled in the art can select any type of C1-C6 short-chain organic acid (such as formic acid, acetic acid, propionic acid, citric acid, etc.) or compound it in any ratio based on actual needs, with minimal impact on the cleaning effect of the cleaning oil of this application.

[0024] In the embodiments of this application, the co-solvent can be one or more of water, ethanol, methanol, isopropanol, ethylene glycol, propylene glycol, acetone, acetonitrile, dimethylformamide, etc. The co-solvent 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 specific embodiments of this application only use water, methanol, ethanol, and isopropanol as examples of the composition of the co-solvent, this should not be used to limit the scope of protection of this application. Those skilled in the art can choose any type of co-solvent (such as water, ethanol, methanol, isopropanol, ethylene glycol, propylene glycol, acetone, acetonitrile, dimethylformamide, etc.) or combine them in any proportion based on actual needs, which will have little impact on the cleaning effect of the cleaning oil of this application.

[0025] In addition, the cleaning oil provided in this application embodiment is conventionally mixed from base oil, C10-C20 long-chain organic acids, C1-C6 short-chain organic acids, and co-solvent in a specific ratio. Specifically, the process involves: adding a specified mass ratio of base oil to a stirred tank; gradually adding a specified mass ratio of C10-C20 long-chain organic acids and stirring until homogeneous; adding a specified mass ratio of C1-C6 short-chain organic acids and continuing to stir until homogeneous; and finally adding a specified mass ratio of co-solvent and stirring thoroughly until clear to obtain the above-mentioned cleaning oil.

[0026] This application also provides the application of the above-mentioned cleaning oil in firearm cleaning. The cleaning oil can spread quickly and evenly on the metal surface of the gun barrel. The C10-C20 long-chain organic acids, C1-C6 short-chain organic acids, and co-solvents can quickly penetrate into the dirt, effectively dissolving and removing metal dirt and corrosion products. The cleaning is fast and efficient, and it is non-corrosive to the metal surface. Furthermore, the cleaning oil requires a small amount due to its excellent cleaning effect and has low toxicity to humans and the environment.

[0027] The following are embodiments of some implementations of this application, which are not intended to limit the scope of this application.

[0028] Additionally, it should be noted that the values ​​given in the following embodiments are as accurate as possible. However, those skilled in the art will understand that due to unavoidable measurement errors and experimental issues, each number should be understood as an approximation rather than an absolutely accurate value.

[0029] Preparation of base oil: Soybean alkane oil produced from hydrogenated soybean plants with a saturated hydrocarbon content greater than 99% (density: 0.74-0.82 g / cm³). 3 Mix 170-225℃ isomerized alkane oil (flash point > 62℃, sulfur content < 0.01%, distillation range: 170-225℃) and 170-225℃ isomerized alkane oil (flash point > 62℃, sulfur content < 0.01%, distillation range: 170-225℃) at a mass ratio of 2:1 at room temperature until homogeneous and ready for use.

[0030] Preparation of C1-C6 short-chain organic acids: Acetic acid and citric acid were mixed evenly at room temperature in a mass ratio of 2:1 and set aside for later 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 oleic acid and lauric acid after refining were used as raw materials. To ensure the purity of the acids, a high-temperature condensation and continuous slag removal distillation mode was adopted. The specific distillation conditions are as follows:

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

[0035] At 80°C, the above-mentioned specific distilled palmitic acid, stearic acid, lauric acid and oleic acid are drawn into a stirrer and mixed evenly in a mass ratio of 1:1:1:1 to obtain C10-C20 long-chain organic acids, which are then ready for use.

[0036] Preparation of cleaning oil:

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

[0038] The composition includes 20% base oil, 40% C10-C20 long-chain organic acids, 5% C1-C6 short-chain organic acids, and 35% cosolvent.

[0039] Weigh each raw material according to the above formula; add the base oil in the specified mass ratio to the mixing tank at room temperature; gradually add the C10-C20 long-chain organic acid in the specified mass ratio and stir evenly; add the C1-C6 short-chain organic acid in the specified mass ratio at room temperature and continue to stir evenly; finally, add the co-solvent in the specified mass ratio at room temperature and stir thoroughly until clear to obtain the 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 oleic acid and lauric acid after refining were used as raw materials. To ensure the purity of the acids, a high-temperature condensation and continuous slag removal distillation mode was adopted. The specific distillation conditions are as follows:

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

[0043] At 80°C, the above-mentioned specific distilled palmitic acid, stearic acid, lauric acid and oleic acid are drawn into a stirrer and mixed evenly in a mass ratio of 1:1:1:1 to obtain C10-C20 long-chain organic acids, which are then ready for use.

[0044] Preparation of cleaning oil:

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

[0046] The composition includes 58% base oil, 11% C10-C20 long-chain organic acids, 1% C1-C6 short-chain organic acids, and 30% cosolvent.

[0047] Weigh each raw material according to the above formula; add the base oil in the specified mass ratio to the mixing tank at room temperature; gradually add the C10-C20 long-chain organic acid in the specified mass ratio and stir evenly; add the C1-C6 short-chain organic acid in the specified mass ratio at room temperature and continue to stir evenly; finally, add the co-solvent in the specified mass ratio at room temperature and stir thoroughly until clear to obtain the clean oil.

[0048] Example 3

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

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

[0051] At 80°C, the above-mentioned specific distilled palmitic acid, stearic acid, lauric acid and oleic acid are drawn into a stirrer and mixed evenly in a mass ratio of 1:1:1:1 to obtain C10-C20 long-chain organic acids, which are then ready for use.

[0052] Preparation of cleaning oil:

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

[0054] The composition includes 60% base oil, 30% C10-C20 long-chain organic acids, 5% C1-C6 short-chain organic acids, and 5% cosolvent.

[0055] Weigh each raw material according to the above formula; add the base oil in the specified mass ratio to the mixing tank at room temperature; gradually add the C10-C20 long-chain organic acid in the specified mass ratio and stir evenly; add the C1-C6 short-chain organic acid in the specified mass ratio at room temperature and continue to stir evenly; finally, add the co-solvent in the specified mass ratio at room temperature and stir thoroughly until clear to obtain the clean oil.

[0056] Example 4

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

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

[0059] At 80°C, the above-mentioned specific distilled palmitic acid, stearic acid, lauric acid and oleic acid are drawn into a stirrer and mixed evenly in a mass ratio of 1:1:1:1 to obtain C10-C20 long-chain organic acids, which are then ready for use.

[0060] Preparation of cleaning oil:

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

[0062] The composition includes 36% base oil, 20% C10-C20 long-chain organic acids, 4% C1-C6 short-chain organic acids, and 40% cosolvent.

[0063] Weigh each raw material according to the above formula; add the base oil in the specified mass ratio to the mixing tank at room temperature; gradually add the C10-C20 long-chain organic acid in the specified mass ratio and stir evenly; add the C1-C6 short-chain organic acid in the specified mass ratio at room temperature and continue to stir evenly; finally, add the co-solvent in the specified mass ratio at room temperature and stir thoroughly until clear to obtain the clean oil.

[0064] Example 5

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

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

[0067] At 80°C, the above-mentioned specific distilled palmitic acid, stearic acid, lauric acid and oleic acid are drawn into a stirrer and mixed evenly in a mass ratio of 1:1:1:1 to obtain C10-C20 long-chain organic acids, which are then ready for use.

[0068] Preparation of cleaning oil:

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

[0070] The composition includes 45% base oil, 28% C10-C20 long-chain organic acids, 2% C1-C6 short-chain organic acids, and 25% cosolvent.

[0071] Weigh each raw material according to the above formula; add the base oil in the specified mass ratio to the mixing tank at room temperature; gradually add the C10-C20 long-chain organic acid in the specified mass ratio and stir evenly; add the C1-C6 short-chain organic acid in the specified mass ratio at room temperature and continue to stir evenly; finally, add the co-solvent in the specified mass ratio at room temperature and stir thoroughly until clear to obtain the clean oil.

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

[0073] Table 1

[0074]

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

[0076] Table 2

[0077]

[0078] During the early research and development process, this application discovered that the ratio of C1-C6 short-chain organic acids to C10-C20 long-chain organic acids 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 in Example 5, except that:

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

[0082] The composition consists of 10% base oil, 50% C10-C20 long-chain organic acids, 10% C1-C6 short-chain organic acids, 20% isopropanol, and 10% water.

[0083] Comparative Example 2

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

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

[0086] The composition consists of 60% base oil, 10% C10-C20 long-chain organic acids, 10% C1-C6 short-chain organic acids, 10% isopropanol, and 10% water.

[0087] Comparative Example 3

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

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

[0090] The composition consists of 20% base oil, 10% C10-C20 long-chain organic acids, 50% C1-C6 short-chain organic acids, 10% isopropanol, and 10% water.

[0091] Comparative Example 4

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

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

[0094] The composition consists of 10% base oil, 10% C10-C20 long-chain organic acids, 10% C1-C6 short-chain organic acids, 30% ethanol, 20% isopropanol, and 20% water.

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

[0096]

[0097] As shown in Table 3, when the compounding ratio of C10-C20 long-chain organic acids to C1-C6 short-chain organic acids in Comparative Examples 1-4 was 50:10, 10:10, and 10:50, the resulting cleaning oils could not pass quality inspection and could not be used for firearm cleaning.

[0098] The following are some examples and comparative examples of the research on the composition of C1-C6 short-chain organic acids and C10-C20 long-chain organic acids in the early experiments of this application. In these examples, the C10-C20 long-chain organic acids were all distilled using a high-temperature condensation and continuous slag discharge and distillation mode, and the distillation conditions were the same as in Example 5.

[0099] Example 6

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

[0101] The mixture consists of 20% soybean alkane oil from hydrogenated soybean plants with a saturated hydrocarbon content greater than 99%, 20% isoalkanes 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, alkane oil and aromatic oil are added to the stirred tank in sequence at room temperature; oleic acid and stearic acid are gradually added at room temperature and stirred evenly; acetic acid is added at room temperature and stirring is continued; finally, isopropanol and water are added at room temperature and stirred thoroughly until clear to obtain clean oil.

[0103] When using, apply the cleaning oil to the surface and interior of the firearm, and wipe it multiple times (50 times) with a wiping cloth. It can remove 95% (by mass) of shooting residue.

[0104] Example 7

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

[0106] The mixture consists of 20% soybean alkane oil from hydrogenated soybean plants with a saturated hydrocarbon content greater than 99%, 30% isoalkane oil with an aromatic hydrocarbon content less than 0.5%, 15% oleic acid, 6.8% stearic acid, 0.2% citric acid, 20% isopropanol, and 8% water.

[0107] According to the above formula, alkane oil and aromatic oil are added to the stirred tank in sequence at room temperature; oleic acid and stearic acid are gradually added at room temperature and stirred evenly; citric acid is added at room temperature and stirring is continued; finally, isopropanol and water are added at room temperature and stirred thoroughly until clear to obtain clean oil.

[0108] When using, apply the cleaning oil to the surface and interior of the firearm, and wipe it multiple times (50 times) with a wiping cloth. It can remove 88% (by mass) of shooting residue.

[0109] Comparative Example 5

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

[0111] The mixture consists of 20% soybean alkane oil from hydrogenated soybean plants with a saturated hydrocarbon content greater than 99%, 30% isoalkane oil with an aromatic hydrocarbon content less than 0.5%, 18% oleic acid, 4% stearic acid, 20% isopropanol, and 8% water.

[0112] According to the above formula, alkane oil and aromatic oil are added to the stirred tank 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 stirred thoroughly until clear to obtain clean oil.

[0113] When using, apply the cleaning oil to the surface and interior of the firearm, and wipe it multiple times (50 times) with a wiping cloth. It can remove 78% (by mass) of shooting residue.

[0114] Comparative Example 6

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

[0116] The mixture contains 50% soybean alkane oil from hydrogenated soybean plants with a saturated hydrocarbon content greater than 99%, 45% isoalkane oil with an aromatic hydrocarbon content of less than 0.5%, and 5% ricinoleic acid.

[0117] According to the above formula, alkane oil and aromatic oil are added to the stirred tank 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 to the surface and inside of the firearm, and wipe it multiple times (50 times) with a wiping cloth. It can remove 50% (by mass) of shooting residue.

[0119] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

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

Claims

1. A cleaning oil, characterized in that, It consists of the following raw materials by weight percentage: The composition consists of 20-60% base oil, 10-40% C10-C20 long-chain organic acids, 0.1-5% C1-C6 short-chain organic acids, and 5-40% cosolvent; the sum of the mass percentages of all raw materials is 100%. The base oil is soybean alkane oil produced from hydrogenated soybean plants with a saturated hydrocarbon content greater than 99% and isoparaffinic alkane oil with an aromatic hydrocarbon content less than 0.5%. The C10-C20 long-chain organic acid is obtained by secondary distillation of C10-C20 long-chain organic acids. The distillation conditions are as follows: the feed temperature is controlled at 60-125℃ by heating with a heat exchanger; the light fraction pre-cutting temperature is controlled at 175-235℃; the liquid level is controlled at 30-50%; the flow rate is set at 1500-2000 kg / h; the head fraction distillation is set with a top temperature of 120-180℃ and a bottom temperature of 175-235℃; the rectification temperature is controlled at 240-255℃; the liquid level is controlled at 30-50%; the rectification receiver temperature is set at 55-85℃; the flow rate is set at 1900-2300 kg / h; and the vacuum degree is set to greater than 900 mmHg.

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 oil 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 a compound of 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 a mixture of soybean alkane oil produced from hydrogenated soybean plants with a saturated hydrocarbon content greater than 99% and isoparaffinic alkane oil with an aromatic hydrocarbon content of <0.5% by mass ratio of 2:

1. The soybean alkane oil produced from hydrogenated soybean plants with a saturated hydrocarbon content greater than 99% has a density of 0.74-0.82 g / cm3 and a distillation range of 185-225℃. The isoalkane oil with an aromatic content of <0.5% has a flash point >62℃, a sulfur content of <0.01%, and a distillation range of 170-225℃.

7. 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.

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

9. The use of the cleaning oil according to any one of claims 1-8 in firearm cleaning.

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