Lubricating oil agent for seamless textile machinery and preparation method of lubricating oil agent

Abstract

The invention belongs to the technical field of lubricating oil agents, and particularly relates to a seamless textile machinery lubricating oil agent and a preparation method thereof. According to the lubricating oil agent for the seamless textile machinery, the alkyl phosphate dinonyl diphenylamine salt is used as an anti-wear agent, so that the lubricating oil agent has the functions of an extreme pressure agent and an anti-wear agent and has good anti-wear performance. According to the anti-wear agent, the hydrophobicity is increased by introducing long-chain hydrophobic alkyl, and the molecules of the anti-wear agent are endowed with extremely good oil solubility by dioleoyl and nonyl diphenylamine, so that the anti-wear agent is not easy to separate out in a white oil system and has relatively high compatibility in the system. Meanwhile, the product is endowed with excellent extreme pressure performance and anti-friction performance, and the abrasion of a knitting needle in the circulation process is greatly reduced. After the lubricating property is improved, the friction between knitting needles is greatly reduced, and the mechanical temperature rise is reduced. The excellent lubricating effect also reduces the generation of free iron ions, slows down the aging of the oil product, and enables the oil product to have stable performance in the circulation process.

Description

Technical Field

[0001] This application belongs to the field of lubricant technology, and more specifically, relates to a lubricant for seamless textile machinery and its preparation method. Background Technology

[0002] Knitting lubricants are mainly used in knitting production equipment in the textile industry. Common equipment using knitting lubricants includes: circular knitting machines, flat knitting machines, sock knitting machines, seamless underwear knitting machines, and small circular knitting machines. In terms of product level, small circular knitting machines are the lowest end, with most products sold domestically and requiring less sophisticated equipment. Next are circular knitting machines and flat knitting machines, where the rate of domestic equipment substitution has increased significantly in recent years, and domestic sales account for a large proportion of their products. Sock knitting machines and seamless underwear knitting machines have a larger proportion of high-end products, with many orders exported to Europe, America, Japan, and South Korea, requiring higher standards in terms of equipment and product positioning.

[0003] Seamless underwear knitting machines are specialized knitting machines used to produce high-end knitted products. These products feature minimal seams, no elastic bands or labels, and offer superior wearing comfort. Compared to traditional knitting processes, seamless underwear knitting technology exhibits unique advantages. This technology not only significantly shortens the process flow and reduces labor costs but also effectively minimizes material waste through a one-step molding process. Furthermore, this technology offers excellent product flexibility, enabling the knitting of three-dimensional (3D) structures. This flexible structural variation allows for greater product diversification, meeting the growing market demand for personalization.

[0004] The working environment and component characteristics of seamless underwear knitting machines place extremely high demands on the compatibility of the knitting oil. Unlike the disposable refueling system of traditional circular knitting machines, the lubricating oil in underwear knitting machines flows through the lubrication points and then returns to the oil tank after passing through a filter screen. This filter screen can only filter lint and other impurities, but cannot filter fine impurities such as sludge. The oil needs to be replenished periodically or the oil in the tank needs to be replaced regularly, resulting in a longer service life compared to traditional circular knitting machine oil. Therefore, this equipment requires the oil to maintain normal lubrication even after long-term circulation. Seamless underwear knitting machines require high precision, necessitating a lubricant with suitable viscosity—enough to quickly penetrate the tiny gaps between components without being too thick and affecting machine operation. The oil also needs good rust and corrosion prevention properties and good compatibility with various materials used in the machine; otherwise, it may lead to corrosion and damage to parts. Poor oil performance can easily cause black oil needles, severely affecting the appearance quality of the product and reducing the product yield. Furthermore, the high operating speed, rapid temperature rise, and increased friction during machine operation lead to a significant increase in energy consumption, which is extremely detrimental to a company's production cost control. Therefore, a high-quality seamless underwear knitting needle oil should not only meet the machine's operational requirements but also reduce its energy consumption.

[0005] Conventional seamless lingerie machine oils are formulated with refined mineral base oils and various high-efficiency additives and surfactants. Seamless lingerie machines use oils on long cycles, and some products, due to insufficient anti-friction properties and inadequate antioxidant performance, exhibit significant color changes and rapid decline in lubrication performance after circulation, failing to provide sustained high efficiency. Furthermore, in actual use, the high speed and rapid temperature rise of the machinery, coupled with the continuously weakening anti-friction, anti-rust, and depleted antioxidant properties during circulation, further exacerbates the machine's temperature increase, increasing operating resistance and energy consumption. Summary of the Invention

[0006] In view of the deficiencies of the prior art, the purpose of this application is to provide a lubricant for seamless textile machinery and its preparation method, aiming to solve the problem of poor overall performance of existing lubricants for seamless textile machinery, such as friction reduction, oxidation resistance, and rust prevention, which leads to short service life of the lubricant.

[0007] To achieve the above objectives, in a first aspect, this application provides a lubricant for seamless textile machinery, comprising, by weight: 89-96 parts base oil, 1.5-2.5 parts anti-wear agent, 0.4-0.6 parts rust inhibitor, 0.3-0.6 parts antioxidant, 2-7 parts emulsifier, and 0.1-0.2 parts dispersant; The anti-wear agent is a dinonyl diphenylamine alkyl phosphate salt; the dinonyl diphenylamine alkyl phosphate salt has the structure shown in formula (I):

[0008] Formula (1) In equation (1), R is C n H 2n+1 Or C n H 2n-1 n is an integer from 10 to 20.

[0009] Preferably, the preparation method of the alkyl phosphate dinonyl diphenylamine salt with the structure shown in formula (I) includes the following steps: (1) An alkyl phosphate mixture was prepared by reacting alkyl alcohols with phosphorus pentoxide under an inert atmosphere; (2) In an organic solvent, the alkyl phosphate mixture is slowly added to a dinonyl diphenylamine solution. During the reaction, dry nitrogen gas is passed through to purge and remove moisture, resulting in a transparent and uniform dark liquid, namely the dinonyl diphenylamine alkyl phosphate salt.

[0010] According to another aspect of the present invention, a method for preparing the aforementioned seamless textile machinery lubricant is provided, comprising the following steps: Add each component to the mixing tank in sequence according to the formula, turn on the agitator, and stir for 30 minutes or more to obtain the seamless textile machinery lubricant.

[0011] Overall, the technical solutions conceived in this application have the following beneficial effects compared with the prior art: (1) The seamless textile machinery lubricant of this invention uses dinonyldiphenylamine salt of alkyl phosphate as an anti-wear agent, which has the functions of both extreme pressure agent and friction reducer, and has good friction reduction performance. The anti-wear agent increases hydrophobicity by introducing long-chain hydrophobic alkyl groups, and the dioleoyl group and nonyldiphenylamine also give the anti-wear agent molecule excellent oil solubility, making it difficult for the anti-wear agent to precipitate in the white oil system and having high compatibility in the system. At the same time, it gives the product excellent extreme pressure performance and friction reduction properties, which greatly reduces the wear of knitting needles during the cycle. After the lubrication performance is improved, the friction between knitting needles is greatly reduced, reducing the temperature rise of the machine. The excellent lubrication effect also reduces the generation of free iron ions, slows down the aging of the oil, and makes the performance of the oil stable during the cycle.

[0012] (2) The seamless textile machinery lubricant of this invention effectively reduces sludge formation and extends product life through a unique combination of high-quality antioxidants and sludge dispersants. Combined with a well-compatible anti-wear agent, it lowers the coefficient of friction after repeated use and effectively controls the rise in machine temperature. By establishing a three-in-one performance matrix of lubrication, heat dissipation, and cleaning, it effectively reduces the energy consumption of the machine during product use. Detailed Implementation

[0013] 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.

[0014] To address the problem of poor overall performance in terms of friction reduction, oxidation resistance, and rust prevention in existing seamless underwear knitting needle oils, leading to a short service life, this invention proposes an innovative improvement approach. Considering that existing underwear knitting needle lubricants typically use ammonium phosphate salts as extreme pressure anti-wear agents, such as BASF's Irgalube 349, this agent is a typical alkyl phosphate amine salt anti-wear agent (amine phosphate ester). Although it has rust prevention and anti-wear effects, it has some shortcomings in non-polar mineral oil systems: (1) Insufficient oil solubility / compatibility: Anti-wear agent 349 is composed of C11-14 branched primary amine salts of dihexyl phosphate. The high polarity of phosphate amine salts has limited solubility in highly refined mineral oils, and may gradually precipitate out with use, causing turbidity or deposition in the oil. This problem of poor dispersion of such polar additives in non-polar media is exacerbated by water impurities or the formation of insoluble substances through reaction with metal ions. (2) Hydrolytic stability and corrosion: Phosphate esters are prone to hydrolysis to produce phosphoric acid. If the anti-wear agent Irgalube 349 comes into contact with water or high temperature, it may decompose into trace amounts of acid, leading to an increase in the acid value of the system and corrosion of the equipment metal. Therefore, such amine salt anti-wear agents have the risk of hydrolysis and acid production and corrosion during long-term cyclic use, and their stability needs to be improved. (3) Limited friction reduction performance: Traditional phosphate ester amine salts mainly play an anti-wear and extreme pressure role, and their effect on reducing the friction coefficient is not prominent. Under boundary lubrication conditions, although the anti-wear agent Irgalube 349 can form a protective film on the steel surface, its ability to reduce friction is still limited compared with professional friction reduction additives.

[0015] Therefore, this invention attempts to propose an alkyl phosphate dinonyl diphenylamine salt anti-wear agent with an improved structure, which gives it a stronger friction-reducing effect, improves the friction-reducing effect, and thus indirectly alleviates oil aging and extends product life.

[0016] This invention provides a lubricant for seamless textile machinery, comprising, by weight: 89-96 parts base oil, 1.5-2.5 parts anti-wear agent, 0.4-0.6 parts rust inhibitor, 0.3-0.6 parts antioxidant, 2-7 parts emulsifier, and 0.1-0.2 parts dispersant; wherein the anti-wear agent is dinonyl diphenylamine alkyl phosphate salt; the dinonyl diphenylamine alkyl phosphate salt has the structure shown in formula (I):

[0017] Formula (1) In equation (1), R is C n H 2n+1 Or C n H 2n-1 n is an integer between 10 and 20, preferably an integer between 15 and 20.

[0018] In some embodiments, the preparation method of the alkyl phosphate dinonyl diphenylamine salt with the structure shown in Formula (I) includes the following steps: (1) Preparation of alkyl phosphate esters by esterification: alkyl alcohols and phosphorus pentoxide are reacted under an inert atmosphere to prepare a mixture of alkyl phosphate esters. The reaction ratio is controlled at about 2:1 (alcohol:phosphorus pentoxide) to obtain a mixture mainly composed of diesters and a small amount of monoesters. The reaction temperature is about 50-60℃ to avoid excessive oxidation. The alkyl alcohol is slowly added under stirring until there is no violent exothermic reaction. (2) Amine neutralization reaction: In an organic solvent, the above alkyl phosphate mixture is slowly added to a solution of dinonyldiphenylamine. Diphenylamines are usually liquids or low-melting-point solids at room temperature, and need to be heated to 50-70°C to completely dissolve them and increase the reaction rate. While stirring, the alkyl phosphate mixture is slowly added, and water is released during the reaction. Dry nitrogen gas is passed through during the process to remove the moisture. Finally, a transparent, homogeneous, dark liquid, namely the dinonyldiphenylamine alkyl phosphate salt, is obtained.

[0019] In the knitting oil of the seamless underwear machine oiling agent of the present invention, alkyl phosphate dinonyl diphenylamine salt is specially used as an anti-wear agent, which has the functions of extreme pressure agent and friction reducing agent. It has the following beneficial effects: (1) The extreme pressure agent increases the length of the hydrophobic tail by introducing long-chain hydrophobic alkyl groups, which improves the spreading and orientation adsorption on the surface of the friction pair, enhances the molecular compliance, promotes the friction reduction effect of the boundary film, and thus reduces the friction coefficient. In addition, the addition of aromatic hydrocarbons can increase the thickness of the organic layer, and shearing is more likely to occur in the organic layer. (2) The oil solubility and compatibility of the extreme pressure agent are improved: dioleoyl and nonyl diphenylamine are both large hydrophobic groups, which give the molecule excellent oil solubility. It is an "ashless" organic salt, does not contain metals, and will not react adversely with other additives. If trace amounts of water are present, aromatic amine salts are less likely to form insoluble precipitates than metal salts, and the stability of the formulation can be improved. Long-chain alkanes make it difficult for water molecules to approach the PO bond, and are less likely to hydrolyze. (3) The antioxidant capacity of the anti-wear agent is improved, and the introduced dinonyldiphenylamine has an antioxidant effect.

[0020] In some embodiments, the base oil is a Group II mineral oil, including but not limited to paraffinic white oil, naphthenic white oil, intermediate white oil, etc.

[0021] In some embodiments, the rust inhibitor is a heterocyclic derivative, including but not limited to one or more of dodecenylsuccinic acid, heterocyclic derivatives, thiadiazole derivatives, benzotriazole derivatives, and dodecenylsuccinic acid half-ester. The rust inhibitor adsorbs onto the metal surface, preventing metal corrosion, rusting, and wear. It also reduces friction during mechanical operation, achieving energy-saving effects.

[0022] In some embodiments, the antioxidants described in this invention are one or more selected from semi-hindered phenolic antioxidants, di-tert-butyl-p-cresol, Irganox L135 phenol, trinonylphenyl phosphite, alkyl diphenylamine, and diphenyl isooctyl phosphite. These antioxidants can significantly extend the oxidation induction period. The combination of high-quality base oils and antioxidants with strong antioxidant properties ensures the stability of the product during cycling, allowing the product to efficiently perform its original performance.

[0023] In this embodiment of the invention, the emulsifier is one or more of fatty alcohol polyoxyethylene polyoxypropylene ether, fatty alcohol polyoxyethylene ether, sorbitan fatty acid ester, and alkoxylated fatty alcohol. The emulsifier provides certain emulsifying properties to the oil.

[0024] This invention introduces a dispersant into the lubricant for seamless textile machinery. The dispersant is one or more of the following: bis(polysuccinimide), polyisobutylene succinimide, succinimide, polyisobutylene succinate, and polymethyl polyacrylate. The dispersant adsorbs and encapsulates sludge and polar substances generated during oxidation through its polar groups, dispersing them in the oil and preventing them from agglomerating and depositing to become the nucleus for catalytic oxidation, thus avoiding clogging of the oil passages. The excellent choice of dispersant provides continuous machine cleanliness: the dispersant ensures system cleanliness, preventing sludge and deposits from adhering to the heated friction surfaces or clogging lubrication nozzles and heat exchange surfaces. Clean metal surfaces have extremely high heat conduction efficiency, and unobstructed oil passages ensure sufficient oil volume and circulation speed, allowing the oil to efficiently carry away and dissipate heat. Lowering the machine temperature reduces machine friction, achieving energy-saving effects.

[0025] The preparation method of the seamless textile machinery lubricant of the present invention includes the following steps: adding each component to a mixing tank in sequence according to the formula amount, turning on the stirring paddle, and stirring for 30 minutes or more to obtain the seamless textile machinery lubricant.

[0026] The embodiments of the present invention are implemented under the premise of the technical solution of the present invention, and detailed implementation methods and processes are given. However, the protection scope of the present invention is not limited to the following embodiments. The process parameters in the following embodiments that do not specify specific conditions are generally in accordance with conventional conditions.

[0027] The endpoints and any values ​​of the ranges disclosed in this invention are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed in this invention.

[0028] The process parameters in the following examples, unless otherwise specified, are generally performed under conventional conditions.

[0029] The embodiments of this application are described below.

[0030] The preparation method of the anti-wear agent dioleoyl phosphate dinonyl diphenylamine salt used in the seamless textile machinery lubricant of the following examples is as follows: Octadecyl alcohol and phosphorus pentoxide are reacted in a 2:1 ratio under a nitrogen atmosphere at a reaction temperature of about 55°C. Alcohol is slowly added under stirring until no violent exothermic reaction occurs, yielding dioleoyl phosphate. In toluene solvent, the above dioleoyl phosphate is slowly added to a dinonyl diphenylamine solution (the molar ratio of dioleoyl phosphate to dinonyl diphenylamine is 1:1), and the reaction is carried out at 60°C with stirring. Dry nitrogen gas is purged during the process to remove moisture. Finally, a transparent, homogeneous, dark liquid is obtained, namely dioleoyl phosphate dinonyl diphenylamine salt with the structure of formula (I), where R is C 17 H 33 Other alkyl phosphate dinonyl diphenylamine salts in formula (I) can be prepared by a similar method.

[0031] Example 1 Mineral white oil (22# mineral white oil, 93.25wt%) with a viscosity of 22 mm² / s, polyoxyethylene ether emulsifier AE03 (4wt%), anti-wear agent dioleoyl phosphate dinonyl diphenylamine salt (1.6wt%), heterocyclic derivative rust inhibitor T551 (0.5wt%), antioxidant 1010 (0.6wt%), and dispersant polyisobutylene succinimide (0.05wt%) were sequentially added to a mixing tank. The agitator was turned on and the mixture was stirred for 40 minutes. The finished product was filtered and packaged.

[0032] Example 2 The other aspects are the same as in Example 1, except that the rust inhibitor is dodecenyl succinic acid (0.5 wt%) and the emulsifier is sorbitan fatty acid ester (4 wt%).

[0033] Example 3 The rest is the same as in Example 1, except that the antioxidant used is di-tert-butyl-p-cresol (0.45 wt%) and mineral white oil (22# mineral white oil, 93.85 wt%).

[0034] Comparative Example 1 The rest is the same as in Example 1, except that the anti-wear agent used is the same mass of BASF 349 (1.6 wt%).

[0035] Comparative Example 2 The rest is the same as in Example 1, except that the anti-wear agent used is BASF 349 (0.8wt%) and the 22# mineral white oil is 94.05wt%.

[0036] Comparative Example 3 The rest is the same as in Example 1, except that the antioxidant used is 2-(2'-hydroxy-5'-methylphenyl)benzotriazole (0.6wt%).

[0037] Comparative Example 4 The rest is the same as in Example 1, except that no dispersant was added.

[0038] Comparative Example 5 Competitor's lingerie oil (brand: Total).

[0039] The oils in the above embodiments and comparative examples were tested for antioxidant properties, wear resistance, etc., and the test methods are as follows: Wear scar diameter: Refer to NB / SH / T 0189-2017, where the friction conditions are a load of 300N, a speed of 1200rpm, and a long wear of 60min at room temperature. The wear scar diameter reflects the anti-wear performance of the oil.

[0040] Oil film strength: Refer to GB / T 3142-2019. It reflects the oil film strength of the lubricant; generally, the greater the oil film strength, the better the lubrication performance.

[0041] Copper sheet corrosion: GB / T 5096-2017. The rust-preventive performance of the oil is distinguished by grade markings, with grade 1a indicating the best rust-preventive performance, followed by grade 1b, then grade 1c, grade 1d, grade 2a, grade 2b, grade 2c and grade 2d, with the rust-preventive performance decreasing in that order.

[0042] Oxidation stability: Refer to SH / T0193-92, under anhydrous conditions, with 5g of cast iron added. This reflects the antioxidant properties of the oil; the longer the oxidation stability time, the better the antioxidant properties.

[0043] The oil samples from Example 1 and Comparative Example 5 were tested on the machine, and the machine operating temperature and return oil color data were obtained, as shown in Table 2.

[0044] The performance test results of the oils in different embodiments and comparative examples are shown in Table 1.

[0045] Table 1. Performance test results of oils in the examples and comparative examples.

[0046] Table 2. On-machine test data of oils in Example 1 and Comparative Example 5

[0047] As can be seen from Table 1, compared with Comparative Examples 1 and 2, the use of improved synthetic anti-wear agents in Examples 1 to 3 greatly improved the product's friction reduction performance, and the overall lubricity and oil film strength were also greater, demonstrating the product's excellent lubrication performance, which was also significantly better than the competing product Comparative Example 5.

[0048] Comparative Examples 1 and 2 replaced the anti-wear agent with BASF 349, which is commonly used in existing knitting oils. In Comparative Example 1, the amount of anti-wear agent was the same as in Example 1. The test results showed that when 1.6% was added, the whole system was unstable and some raw materials precipitated. This may be due to the strong polarity of BASF 349 and its poor compatibility in the oil system. In Comparative Example 2, the amount of BASF 349 was reduced to half that of the dioleoyl phosphate dinonyl diphenylamine salt anti-wear agent in Example 1. The test results showed that the system stability was improved and the rust prevention performance was improved to a certain extent. However, compared with Example 1, its anti-wear performance and friction reduction performance were still at a low level.

[0049] Comparative Example 3 was conducted under the same conditions as Example 1, except that the antioxidant was replaced with 2-(2'-hydroxy-5'-methylphenyl)benzotriazole. The oxidation stability time of this oil was significantly shorter than that of Example 1. At the same time, due to its poor antioxidant properties, the wear resistance of this oil was also significantly reduced compared to Example 1.

[0050] Comparative Example 4 was conducted under the same conditions as Example 1, except that no dispersant was added. The test results showed that without the addition of a dispersant, the rotation time of the oil was short, and sludge was clearly produced after oxidation. The oil had poor antioxidant properties, indicating that the dispersant and the suitable antioxidant 1010 in Example 1 had a good synergistic effect in the system, which improved the antioxidant properties of the oil as a whole.

[0051] Comparative Example 5 is a competitor's lubricant from Total. The comparison shows that Example 1, by improving the anti-wear agent, enhances the system's stability, anti-wear properties, and friction-reducing properties. Furthermore, with the addition of synergistic antioxidants and rust inhibitors, the product exhibits excellent antioxidant performance, with a copper strip corrosion grade of 1, indicating excellent rust prevention. In addition, post-cycle anti-wear performance testing shows that the lubrication performance of Example 1 remains at a superior level, with a friction retention rate reaching 91%, significantly higher than the comparative example. The lubricant product of Example 1 possesses good anti-wear and friction-reducing properties, as well as antioxidant and rust-preventing properties. It provides excellent performance during lubricant recycling, significantly reducing wear on the metal in the running track area, lubricating the running track, and thus reducing energy consumption. Example 1's overall energy consumption is 5% lower than that of the competitor in Comparative Example 5, resulting in significant energy savings for the workshop.

[0052] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A lubricant for seamless textile machinery, characterized in that, By weight, it includes: 89-96 parts base oil, 1.5-2.5 parts anti-wear agent, 0.4-0.6 parts rust inhibitor, 0.3-0.6 parts antioxidant, 2-7 parts emulsifier, and 0.1-0.2 parts dispersant; The anti-wear agent is a dinonyl diphenylamine alkyl phosphate salt; the dinonyl diphenylamine alkyl phosphate salt has the structure shown in formula (I): Formula (1) In equation (1), R is C n H 2n+1 Or C n H 2n-1 n is an integer from 10 to 20.

2. The lubricant as described in claim 1, characterized in that, The preparation method of the alkyl phosphate dinonyl diphenylamine salt with the structure shown in Formula (I) includes the following steps: (1) An alkyl phosphate mixture was prepared by reacting alkyl alcohols with phosphorus pentoxide under an inert atmosphere; (2) In an organic solvent, the alkyl phosphate mixture is slowly added to a dinonyl diphenylamine solution. During the reaction, dry nitrogen gas is passed through to purge and remove moisture, resulting in a transparent and uniform dark liquid, namely the dinonyl diphenylamine alkyl phosphate salt.

3. The lubricant as described in claim 1, characterized in that, The base oil is a Group II mineral oil.

4. The lubricant as described in claim 1, characterized in that, The rust inhibitor is a heterocyclic derivative.

5. The lubricant as described in claim 4, characterized in that, The rust inhibitor is one or more of the following: dodecenyl succinic acid, heterocyclic derivatives, thiadiazole derivatives, benzotriazole derivatives, and dodecenyl succinic acid half ester.

6. The lubricant as described in claim 1, characterized in that, The antioxidant is one or more of the following: semi-hindered phenolic antioxidant, di-tert-butyl-p-cresol, Irganox L135 phenol, trinonylphenyl phosphite, alkyl diphenylamine, and diphenyl isooctyl phosphite.

7. The lubricant as described in claim 1, characterized in that, The emulsifier is one or more of fatty alcohol polyoxyethylene polyoxypropylene ether, fatty alcohol polyoxyethylene ether, sorbitan fatty acid ester, and alkoxylated fatty alcohol.

8. The lubricant as described in claim 1, characterized in that, The dispersant is one or more of bis / polysuccinimide, polyisobutylene succinimide, succinimide, polyisobutylene succinate, and polymethyl polyacrylate.

9. The method for preparing the lubricant for seamless textile machinery as described in any one of claims 1 to 8, characterized in that, Includes the following steps: Add each component to the mixing tank in sequence according to the formula, turn on the agitator, and stir for 30 minutes or more to obtain the seamless textile machinery lubricant.

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