Preparation method and application of anti-bloom rubber protective wax composition

Abstract

The application discloses an anti-bloom rubber protective wax composition and a preparation method thereof. The composition contains 50-90 parts of base protective wax and the rest anti-bloom agent in total 100 parts. The base protective wax is compounded by full-refined paraffin wax, semi-refined paraffin wax, microcrystalline wax and Fischer-Tropsch wax with specific brand, carbon number and normal content. The anti-bloom agent is compounded by bio-based wax, polyolefin wax and amphiphilic compound. In the preparation, the various petroleum waxes are first melted, then the anti-bloom agent is added for constant temperature mixing, and the finished product is obtained by filtering and granulating. By regulating the carbon chain distribution and migration rate of the wax, a thin and dense smooth wax film can be formed on the surface of the rubber, ozone is blocked in a wide temperature range of-10-50 DEG C for a long time, and no cracks are generated after 96h ozone aging. The anti-bloom component is gently precipitated, the gloss of the rubber after long-term storage is much better than that of ordinary protective wax, and the bloom whitening is effectively inhibited.

Description

Technical Field

[0001] This invention relates to the field of rubber protection technology, specifically to an anti-blooming rubber protective wax composition, its preparation method, and its application. Background Technology

[0002] Tires exposed to air for extended periods are prone to cracking and aging due to the reaction of unsaturated bonds in the rubber backbone with ozone, ultimately leading to tire failure. Industrially, protective waxes are commonly added to tire sidewall rubber formulations as physical antioxidants. After vulcanization, the wax components dissolved in the rubber gradually migrate to the surface, forming a dense film that isolates ozone. Traditional protective waxes, due to their high n-alkane content and low molecular weight, migrate too quickly and excessively in the rubber compound, resulting in an overly thick and rough wax film on the surface, appearing as a white bloom. This wax film is easily detached and clumps under external force, causing unevenness on the rubber surface, affecting not only the appearance quality of rubber products but also potentially reducing their physical properties and service life. To suppress blooming, a common practice is to reduce the amount of protective wax added; however, insufficient wax film weakens the resistance to ozone aging; conversely, ensuring sufficient protection leads to an excessively thick wax film and blooming. Therefore, how to effectively suppress blooming while ensuring ozone protection performance has become a technical problem that needs to be solved in the field of rubber protective waxes.

[0003] Currently, various types of rubber protective waxes offer some protective effect. For example, patent CN115838498A provides a sidewall rubber composition that improves tire appearance. By reducing the amount of rubber protective wax added and using it in conjunction with chemical anti-aging agents, this method effectively solves the problem of easy migration of chemical antioxidants and protective waxes. However, the chemical antioxidants used in this solution are expensive and have significant pollution potential. Patent CN115960469A proposes a method for preparing and applying sustained-release microcapsules of protective wax. The protective wax, which is solid at room temperature and pressure, is heated and melted, then added dropwise to an aqueous solution of anionic surfactant to form an oil-in-water emulsion. Subsequently, an aqueous solution of calcium salt and an aqueous solution of carbonate are added dropwise to obtain calcium carbonate microcapsules of protective wax. These microcapsules are then added to a low-concentration acid solution, filtered, washed with deionized water, and dried to obtain sustained-release microcapsules of protective wax. This invention allows the protective wax to migrate out through the micropores on the surface of calcium carbonate, achieving controllable migration speed. However, this method is complex and increases production costs. Patent CN109777128A discloses a high-isoalkane rubber protective wax and its preparation method. By controlling the isoalkane content in the high-isoalkane rubber protective wax to 40-56% and the total hydrocarbon carbon peak to C35-C37, the wax film migration performance and tire appearance are improved. However, the protective wax with high isoalkane content migrates slowly at low temperatures, resulting in poor ozone protection. Patent CN119432099A discloses a high-melting-point rubber protective wax, which only addresses the problem of high-temperature ozone aging resistance but does not design a solution for blooming defects. Therefore, it cannot simultaneously meet the dual production and use requirements of long-term high-temperature protection and high gloss without white bloom on the surface of rubber products.

[0004] Therefore, there is an urgent need for a high-melting-point rubber protective wax that can provide long-lasting ozone protection over a wide temperature range, effectively suppress blooming and whitening of rubber products, has a simple and energy-saving production process, and produces stable finished products, so as to improve the actual use effect of rubber products. Summary of the Invention

[0005] To address the aforementioned technical problems, the first aspect of this invention provides an anti-blooming rubber protective wax composition. The total mass fraction of the raw materials is 100 parts, comprising 50-90 parts of a basic protective wax and the remainder being an anti-blooming agent. The basic protective wax has a n-alkane content (i.e., the mass percentage of straight-chain n-alkanes to all alkanes) of no more than 75%, a non-n-alkane content of no less than 25%, a freezing point of 50℃-80℃, and an oil content ≤1%. The basic protective wax is the core component providing rubber with ozone resistance and weather aging resistance. Sufficient addition ensures that the wax components can stably migrate to the rubber surface to form a continuous protective film, guaranteeing basic ozone protection. The maximum of 90 parts avoids an excessively high proportion of basic wax and insufficient anti-blooming agent content, which would prevent rapid wax precipitation and blooming. The anti-blooming agent, as a functional modifying component, is used to regulate the wax migration rate and optimize the wax film morphology. A dosage limit of 10-50 parts achieves an optimal balance between "protective performance" and "anti-blooming performance."

[0006] As an feasible example, the total mass of the base protective wax is 100 parts, and the raw materials include 20-40 parts fully refined paraffin wax, 10-30 parts semi-refined paraffin wax, 20-30 parts microcrystalline wax, and 0-20 parts Fischer-Tropsch wax (excluding 0 parts). The synergistic effect of fully refined and semi-refined paraffin wax enables the protective wax film to have higher stability in medium and low temperature environments. Microcrystalline wax increases the melting point of the protective wax and the strength of the high-temperature wax film, solving the problem of wax film loss and damage at high temperatures. The dosage is limited to 20-30 parts to ensure high-temperature protection without significantly reducing the low-temperature migration rate due to excessive microcrystalline wax. Fischer-Tropsch wax has a regular carbon distribution, improving the overall compatibility of the wax, widening the applicable temperature range, and helping to increase the dropping melting point. Appropriate dosage can avoid excessive straight-chain alkanes from exacerbating blooming.

[0007] As an feasible example, the total mass fraction of the anti-blooming agent is 100 parts, and the raw materials include 50-80 parts of bio-based wax, 10-20 parts of polyolefin wax, and 10-30 parts of amphiphilic compound. The bio-based wax contains long-chain fatty acid / ester polar groups, which enhances the stability of the protective wax in the rubber matrix, slows down the outward migration of wax, and optimizes the density and smoothness of the wax film. Its high proportion of 50-80 parts is the core of anti-blooming; too low a proportion results in insufficient anti-blooming effect. The polyolefin wax has a high molecular weight and high melting point, which can regulate the wax crystal morphology, improve the adhesion and mechanical strength of the wax film, and prevent the wax film from rubbing off. The amphiphilic compound has both long-chain alkyl and polar groups, acting as a compatibility bridge between paraffin and bio-based wax, balancing the overall wax migration rate, and making the precipitated wax film uniform and thin. Its content is 10-30 parts; too little will result in poor compatibility of the wax components and uneven film thickness, while too much will easily affect the vulcanization performance of the rubber.

[0008] The basic protective wax is combined with different carbon chain paraffins, microcrystalline waxes, and Fischer-Tropsch waxes, with a wide carbon number distribution. The low-temperature short carbon chain paraffins form a film quickly, while the high-temperature long carbon chain microcrystalline waxes stabilize the wax film. Combined with anti-blooming agents, the migration rate is controlled. A continuous protective film can be formed in a wide temperature range of -10℃ to 50℃. No cracking occurs after 72 hours of ozone aging at 50℃, and the weather resistance aging cycle is greatly extended.

[0009] As an feasible example, the fully refined paraffin wax is one or more of fully refined petroleum waxes with grades 48-70#, a carbon number distribution range of C20-C55, a normal content of 50-90%, and an oil content ≤0.5%. Oil in wax reduces the strength of the wax film, easily oxidizes and discolors at high temperatures, causing rubber products to yellow and the wax film to easily crack and peel off; excessively high oil content can also interfere with the vulcanization system and affect the mechanical properties of rubber. In this invention, the oil content is limited to ≤0.5%, which reduces the risk of oxidative deterioration, ensures a dense and stable wax film, and does not damage the vulcanization and physical properties of rubber.

[0010] As an feasible example, the semi-refined paraffin wax is one or more of semi-refined petroleum waxes with a grade of 50-70#, a carbon number distribution range of C22-C55, a normal content of 50-90%, and an oil content of ≤1%. Semi-refined paraffin waxes with a melting point lower than 50# have a low melting point, and the wax film is easily melted and lost under high-temperature conditions, resulting in a loss of high-temperature ozone protection ability; paraffin waxes with a melting point higher than 70# have an excessively high melting point, resulting in high molecular migration resistance, making it difficult to quickly form a separating film on the rubber surface in low-temperature environments, leading to insufficient initial protection.

[0011] As an feasible example, the microcrystalline wax is one or more of the grade 65-80# microcrystalline petroleum wax, with a carbon number distribution range of C20-C70, a normal content ≤65%, and an oil content ≤2%. Microcrystalline wax has branched isoalkanes as its core advantage; low normal content and high isoalkanes can slow down the overall wax migration rate and suppress blooming. If the normal content is >65%, the proportion of straight-chain alkanes increases, the migration speed accelerates, and surface white bloom is easily formed. Therefore, in this invention, the normal content of the microcrystalline wax is preferably ≤65% to ensure sufficient isomeric components, achieve a thin and uniform wax film, and balance high-temperature stability with anti-blooming effects.

[0012] As an feasible example, the Fischer-Tropsch wax is one or more of grades 60-80# Fischer-Tropsch waxes, with a carbon number distribution range of C20-C80, a normal-chain content ≥80%, and an oil content ≤1%. Fischer-Tropsch waxes are characterized by high levels of straight-chain normal-chain alkanes. The high normal-chain component can compensate for the insufficient low-temperature migration of microcrystalline waxes and paraffin waxes, allowing for rapid formation of a basic protective film on the rubber surface in low-temperature environments. If the normal-chain content is below 80%, the low-temperature precipitation rate decreases significantly, and ozone cracking is likely to occur in severe cold conditions. Combined with an anti-blooming agent for synergistic regulation, the potential for blooming caused by high normal-chain content can be offset.

[0013] As an feasible example, the bio-based wax is selected from at least one of plant waxes, animal waxes, microbial waxes, and biosynthetic waxes. The main components of bio-based waxes are C16-C36 long-chain fatty acids, fatty alcohols, and / or fatty acid esters. Ordinary petroleum waxes and Fischer-Tropsch waxes are both non-polar alkanes with weak interfacial bonding with rubber; bio-based waxes carry polar groups, which can improve the interfacial compatibility between the wax and the rubber matrix, slow down the rapid migration of wax to the surface, and inhibit blooming and whitening from the source.

[0014] As an feasible example, the polyolefin wax backbone has a saturated straight-chain hydrocarbon structure and may contain one or more polar oxygen-containing groups selected from -COOCH3, -COOH, -OH, -C=O, and -CHO, with a molecular weight of 1000~5000 and a melting point of 70~120℃; the polyolefin wax may be an oxidized polymer, i.e., oxidized polyethylene wax. The polar groups can connect the non-polar petroleum wax component with the polar bio-based wax, acting as a compatibility bridge and improving the uniformity of the entire anti-spraying agent system. As an feasible example, the amphiphilic compound has a long-chain alkyl backbone as its main chain, and is a type of substance with a long-chain alkyl skeleton and polar oxygen-containing functional groups.

[0015] Further preferably, the amphiphilic compound includes one or more of butyl stearate, stearic acid, and glyceryl monostearate. The amphiphilic compound can open the compatibility interface between the basic protective wax and the anti-blooming agent, ensuring uniform mixing of the system and stable, batch-to-batch performance of the finished product. Simultaneously, it synergistically works with bio-based waxes and polyolefin waxes to slow down wax migration rates, inhibiting blooming on the rubber surface at the molecular level and improving the gloss of the product. It also optimizes the uniformity of wax film crystallization, forming a thin, dense, and smooth protective film, effectively improving wax film adhesion and abrasion resistance, and achieving long-lasting ozone protection.

[0016] A second aspect of the present invention provides a method for preparing an anti-frost rubber protective wax composition, comprising the following steps: Fully refined paraffin wax, semi-refined paraffin wax, microcrystalline wax and Fischer-Tropsch wax are mixed and heated to 80-100°C in a N2 environment. After complete melting, bio-based wax, polyolefin wax and amphiphilic compound are added, and the temperature is raised to 100-150°C. The mixture is stirred at a constant temperature for 10-60 minutes. The resulting product is filtered, cooled to 80°C and transferred to a granulation device for granulation and molding, thus producing the anti-blooming rubber protective wax composition.

[0017] The third aspect of the present invention provides an application of an anti-blooming rubber protective wax composition, which is mainly used in the production and preparation of rubber products.

[0018] As an feasible example, the rubber products include natural rubber, butadiene rubber, carbon black, environmentally friendly aromatic oil, zinc oxide, stearic acid, antioxidants, pre-dispersions, vulcanization accelerators, and an anti-blooming rubber protective wax composition. The anti-blooming rubber protective wax composition can be compounded with paraffin wax, microcrystalline wax, and Fischer-Tropsch wax with different carbon chain distributions, balancing rapid low-temperature film formation with high-temperature wax film stability. It maintains an intact protective film over a wide temperature range of -10℃ to 50℃, making it suitable for various outdoor applications such as tires and conveyor belts.

[0019] Beneficial effects (i) The present invention combines paraffin wax, microcrystalline wax and Fischer-Tropsch wax with gradient carbon chains to form a multi-layered protective system. It can form a film quickly at low temperature, and the wax film is not easy to melt and break at high temperature. It can stably block ozone in the range of -10℃ to 50℃. It is not easy to crack when placed outdoors for a long time, which greatly extends the service life of rubber products.

[0020] (ii) The anti-blooming agent contains bio-based wax and modified polyolefin wax, which are combined with amphiphilic compounds to synergistically regulate the wax migration rate, preventing the wax components from precipitating out too quickly and in large quantities to form a thick white frost. A thin, flat and smooth wax film is formed on the rubber surface, which maintains good gloss even after long-term storage, and the appearance quality is significantly improved.

[0021] (III) The polar modified components optimize the crystal morphology of the wax crystals, resulting in a dense and flexible wax film that is firmly bonded to the rubber matrix. It is not easy to fall off in pieces due to external friction, and it can continuously block ozone erosion. Its long-term protective effect is superior to that of traditional protective waxes.

[0022] (iv) The composition obtained by the present invention has good compatibility with raw materials such as natural rubber, butadiene rubber, carbon black, and vulcanization auxiliaries, and will not interfere with the vulcanization reaction. After vulcanization, the hardness, tensile strength, tear strength and mechanical decay of the rubber compound under thermo-oxidative aging are smaller, and the performance of the rubber itself is not impaired.

[0023] (v) The petroleum wax, bio-based wax and amphiphilic additives used in this invention are all general chemical raw materials. The melting and blending process is simple and does not require complex and costly processes such as microcapsules and expensive special chemical antioxidants. It is suitable for batch continuous production and has outstanding economic benefits. Attached Figure Description

[0024] Figure 1 The images show the film scratch test results of the protective waxes corresponding to Examples 1-3 and Comparative Examples 1-3 after being placed in a natural environment for different periods of time. Detailed Implementation

[0025] Example 1 The first aspect of the present invention provides an anti-blooming rubber protective wax composition, wherein the total mass of the raw materials is 100 parts, including 70 parts of basic protective wax and 30 parts of anti-blooming agent.

[0026] The composition of the basic protective wax (by mass parts) is as follows: 36 parts of fully refined paraffin wax (grade 60#), 24 parts of semi-refined paraffin wax (grade 62#), 25 parts of microcrystalline wax (grade 70#), 10 parts of microcrystalline wax (grade 80#), and 5 parts of Fischer-Tropsch wax (grade 68#). This basic protective wax has a n-alkane content of 70.3%, a freezing point of 71℃, and a main carbon number peak of C34, classifying it as a high-temperature protective wax.

[0027] The composition of the anti-spray agent (by mass parts) is: 30 parts rice bran wax, 30 parts carnauba wax, 20 parts polyethylene wax, and 20 parts butyl stearate.

[0028] The second aspect of this example provides a method for preparing an anti-frost rubber protective wax composition, comprising the following steps: Fully refined paraffin wax, semi-refined paraffin wax, microcrystalline wax and Fischer-Tropsch wax are mixed and heated to 100°C in a N2 environment. After complete melting, rice bran wax, carnauba wax, polyolefin wax and butyl stearate are added. The temperature is raised to 130°C and stirred at a constant temperature for 30 minutes. The resulting product is filtered, cooled to 80°C and transferred to a granulation device for granulation and molding, thus producing the anti-blooming rubber protective wax composition.

[0029] The third aspect of this example provides an application of an anti-blooming rubber protective wax composition in the production and preparation of rubber products.

[0030] The raw materials (by mass) for preparing the rubber products are shown in Table 1. The preparation method of the rubber products is conventional vulcanization in the art, that is, the raw materials are mixed by an open mill to obtain a uniform mixture, and then obtained by compression molding vulcanization.

[0031] Table 1

[0032] Comparative Example 1 The specific implementation method in this example is the same as in Example 1, except that the anti-blooming rubber protective wax composition is 1 part of basic protective wax and does not include anti-blooming agent.

[0033] Example 2 The first aspect of the present invention provides an anti-blooming rubber protective wax composition, wherein the total mass of the raw materials is 100 parts, including 70 parts of basic protective wax and 30 parts of anti-blooming agent.

[0034] The composition of the basic protective wax (by mass parts) is as follows: 12.5 parts of fully refined paraffin wax (grade 58#), 15 parts of fully refined paraffin wax (grade 64#), 12.5 parts of fully refined paraffin wax (grade 66#), 20 parts of microcrystalline wax (grade 70#), 20 parts of semi-refined paraffin wax (grade 66#), 10 parts of microcrystalline wax (grade 80#), and 10 parts of Fischer-Tropsch wax (grade 66#). This basic protective wax has a n-alkane content of 64.8%, a freezing point of 66℃, and a carbon number distribution with a main peak of C32, classifying it as a medium-to-high temperature protective wax.

[0035] The composition of the anti-spray agent (by mass parts) is as follows: 40 parts sunflower seed wax, 30 parts carnauba wax, 10 parts oxidized polyethylene wax, and 20 parts stearic acid.

[0036] The second aspect of this example provides a method for preparing an anti-frost rubber protective wax composition, which is the same as in Example 1.

[0037] The third aspect of this example provides an application of an anti-blooming rubber protective wax composition in the production of rubber products. The raw materials for preparing the rubber products are the same as in Example 1.

[0038] Comparative Example 2 The specific implementation method in this example is the same as in Example 2, except that the anti-blooming rubber protective wax composition is 1 part of basic protective wax and does not include anti-blooming agent.

[0039] Example 3 The first aspect of the present invention provides an anti-blooming rubber protective wax composition, wherein the total mass of the raw materials is 100 parts, including 60 parts of basic protective wax and 40 parts of anti-blooming agent.

[0040] The composition of the basic protective wax (by weight parts) is as follows: 15 parts of fully refined paraffin wax (grade 52#), 15 parts of semi-refined paraffin wax (grade 52#), 30 parts of fully refined paraffin wax (grade 64#), 10 parts of microcrystalline wax (grade 70#), 10 parts of semi-refined paraffin wax (grade 66#), 5 parts of microcrystalline wax (grade 80#), and 15 parts of Fischer-Tropsch wax (grade 60#). This basic protective wax has a normal structure content of 74.5%, a freezing point of 62℃, and a main carbon distribution peak of C33, making it a wide-temperature protective wax.

[0041] The composition of the anti-spraying agent (by mass parts) is: 30 parts rice bran wax, 30 parts sugarcane wax, 20 parts polyethylene wax, and 20 parts glyceryl monostearate.

[0042] The second aspect of this example provides a method for preparing an anti-frost rubber protective wax composition, which is the same as in Example 1.

[0043] The third aspect of this example provides an application of an anti-blooming rubber protective wax composition in the production of rubber products. The raw materials for preparing the rubber products are the same as in Example 1.

[0044] Comparative Example 3 The specific implementation method in this example is the same as in Example 3, except that the anti-blooming rubber protective wax composition is 1 part of basic protective wax and does not include anti-blooming agent.

[0045] Performance testing The rubber products obtained in Examples 1-3 and Comparative Examples 1-3 were subjected to appearance and ozone resistance tests and appearance gloss tests.

[0046] Ozone aging test conditions: Ozone aging was carried out according to the method of GB / T 7762-2014.

[0047] Condition 1: Ozone concentration of 50 pphm, temperature of 50 ± 2℃, stretching of 20%; Condition 2: Ozone concentration of 50 pphm, temperature of 40±2℃, stretching of 20%; Condition 3: Ozone concentration of 50 pphm, temperature of 25±2℃, stretching of 20%.

[0048] The results of the ozone accelerated testing are detailed in Table 2, and the results of the gloss test (conducted using a 60° single-angle gloss meter) are detailed in Table 3. The film scratch test images of the protective waxes corresponding to Examples 1-3 and Comparative Examples 1-3 after being placed in a natural environment for different periods are shown below. Figure 1 As shown.

[0049] Table 2

[0050] Table 3

[0051] Under three temperature gradients, Examples 1-3 with added basic protective wax and anti-blooming agent, and Comparative Examples 1-3 without anti-blooming agent, all showed a 96-hour ozone aging level of 0 and no cracking. This indicates that the basic protective wax itself possesses adequate ozone protection capabilities, and the addition of anti-blooming agent does not weaken the barrier protection effect of the wax. Under the same storage time, the gloss values ​​of all examples were significantly higher than those of the comparative examples; and with prolonged storage time, the gloss of the comparative examples decreased significantly, showing severe whitening and loss of gloss, while the gloss of the examples decreased more gradually. These results demonstrate that anti-blooming agent can effectively control the rate of wax migration and precipitation, prevent the formation of thick white bloom on the rubber surface, maintain the glossy appearance of rubber products for a long time, and significantly improve blooming and whitening defects.

[0052] In summary, the protective wax composition provided by this invention significantly alleviates the problem of rubber blooming without reducing ozone aging resistance, while taking into account both long-lasting protection and excellent appearance.

Claims

1. A rubber protective wax composition for preventing blooming, characterized in that, The total mass of the raw materials is 100 parts, including 50-90 parts of basic protective wax and the remainder of anti-spraying agent; The basic protective wax has a n-alkane content of no more than 75%, a non-n-alkane content of no less than 25%, a freezing point of 50℃~80℃, and an oil content of ≤1%. The total mass of the basic protective wax is 100 parts, and the raw materials include 20-40 parts of fully refined paraffin wax, 10-30 parts of semi-refined paraffin wax, 20-30 parts of microcrystalline wax, and 0-20 parts of Fischer-Tropsch wax. The total mass of the anti-spray agent is 100 parts, and the raw materials include 50-80 parts of bio-based wax, 10-20 parts of polyolefin wax, and 10-30 parts of amphiphilic compound.

2. The protective wax composition according to claim 1, characterized in that, The fully refined paraffin wax is one or more of the fully refined petroleum waxes with the grade 48~70#, the carbon number distribution range is C20~C55, the normal structure content is 50~90%, and the oil content is ≤0.5%.

3. The protective wax composition according to claim 1, characterized in that, The semi-refined paraffin wax is one or more of the grade 50~70# semi-refined petroleum waxes, with a carbon number distribution range of C22~C55, a normal content of 50~90%, and an oil content of ≤1%.

4. The protective wax composition according to claim 1, characterized in that, The microcrystalline wax is one or more of the grade 65~80# microcrystalline petroleum wax, with a carbon number distribution range of C20~C70, a normal content of ≤65%, and an oil content of ≤2%.

5. The protective wax composition according to claim 1, characterized in that, The Fischer-Tropsch wax is one or more of grades 60-80# Fischer-Tropsch wax, with a carbon number distribution range of C20-C80, a normal content of ≥80%, and an oil content of ≤1%.

6. The protective wax composition according to claim 1, characterized in that, The bio-based wax is selected from at least one of plant waxes, animal waxes, microbial waxes, and biosynthetic waxes.

7. The protective wax composition according to claim 1, characterized in that, The amphiphilic compound has a long-chain alkyl backbone as its main chain and is a type of substance with a long-chain alkyl skeleton and polar oxygen-containing functional groups.

8. The protective wax composition according to claim 7, characterized in that, The amphiphilic compounds include one or more of butyl stearate, stearic acid, and glyceryl monostearate.

9. A method for preparing a protective wax composition according to any one of claims 1-8, characterized in that, Includes the following steps: Fully refined paraffin wax, semi-refined paraffin wax, microcrystalline wax and Fischer-Tropsch wax are mixed and heated to 80-100°C in a N2 environment. After complete melting, bio-based wax, polyolefin wax and amphiphilic compound are added, and the temperature is raised to 100-150°C. The mixture is stirred at a constant temperature for 10-60 minutes. The resulting product is filtered, cooled to 80°C and transferred to a granulation device for granulation and molding, thus producing the anti-blooming rubber protective wax composition.

10. The application of a protective wax composition according to any one of claims 1-8, characterized in that, It is used in the production and preparation of rubber products.

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