An additive master batch and its application

Abstract

The application provides an auxiliary agent master batch and application thereof. The raw material of the auxiliary agent master batch comprises a resin base material, a high-melting-point auxiliary agent and a low-melting-point auxiliary agent; wherein the melting point of the high-melting-point auxiliary agent is greater than 40 DEG C, and the melting point of the low-melting-point auxiliary agent is less than or equal to 40 DEG C. The application effectively solves the problems of easy blocking and clumping of the low-melting-point auxiliary agent master batch, complex preparation process, and difficult forming, etc. The auxiliary agent master batch provided by the application is not easy to block and clump, and can be prepared by using the common process for preparing the master batch, and the forming is simple and the master batch with different particle sizes can be prepared.

Description

Technical Field

[0001] This invention relates to the field of polymer materials technology, and more specifically, to an additive masterbatch and its application. Background Technology

[0002] When polymer materials are exposed to sunlight for a long time, they absorb the energy of ultraviolet rays and undergo aging and degradation, resulting in aging phenomena such as discoloration, cracking, and a decline in mechanical and electrical properties, making them unusable. This process is called photoaging.

[0003] Adding light stabilizers during the production of polymer materials can effectively slow down the aforementioned photoaging reactions.

[0004] Currently, light stabilizers mainly include ultraviolet (UV) absorbers and hindered amine light stabilizers. UV absorbers include benzophenones, benzotriazoles, and triazines, which act as light stabilizers by absorbing harmful UV light and releasing it as heat. Hindered amine light stabilizers work by first forming active free radicals, which then capture free radicals generated during material aging and degradation, thus exerting their light stabilizing effect. Hindered amine light stabilizers represent a significant advancement in polymer light stabilization and are widely used in general-purpose plastics, engineering plastics, coatings, adhesives, and rubber.

[0005] Although hindered amine light stabilizers offer excellent performance, some have low melting points, making them difficult to add during use. A solution is to prepare these low-melting-point hindered amine light stabilizers into auxiliary masterbatches for easier mixing and processing with polymer materials. However, these masterbatches contain low-melting-point auxiliary components, leading to clumping issues during storage, transportation, and subsequent use, affecting downstream customers' normal use. For example, 2,2,6,6-tetramethyl-4-piperidine stearate (UV-3853) has a melting point of only about 28°C and appears as a white to light yellow waxy or oily substance at room temperature. As mentioned above, this product is usually prepared as a masterbatch for customer use, but the prepared masterbatch suffers from clumping problems during storage, transportation, and subsequent use.

[0006] Regarding the technical problems of the aforementioned low-melting-point additive masterbatch, taking UV-3853 as an example, the mainstream solutions in the anti-aging additive industry are as follows: (1) Using other processing aids, such as foaming agents and adsorbents, to improve the coating performance of the PP carrier on the light stabilizer UV-3853, thereby achieving the purpose of inhibiting the precipitation of the light stabilizer UV-3853; however, due to the introduction of a certain proportion of adsorbents and foaming agents in this method, it may have some adverse effects on the processing of polymer materials, such as compatibility issues. (2) Using foamed polypropylene as a carrier, the foamed polypropylene absorbs the 3853 liquid, thereby achieving the purpose of improving the precipitation of the light stabilizer 3853. This method has high production costs, low production efficiency, and high requirements for processing technology, and does not have a cost advantage. (3) Add a protective layer to the surface. For example, patent CN108137863A discloses 3853PP5 made by multi-stage extruder co-extrusion technology. It uses another layer of protective sleeve to achieve the wrapping effect. However, since the cutting surface of the cutter cannot be protected, there will still be precipitation and clumping in actual applications.

[0007] Besides UV-3853, other low-melting-point additive masterbatches also suffer from the aforementioned difficulties in preparation and high masterbatch adhesion.

[0008] In view of the above, this application is hereby submitted. Summary of the Invention

[0009] The main objective of this invention is to provide an additive masterbatch and its application, in order to solve the problems of easy agglomeration and complex processes of low-melting-point additive masterbatches in the prior art.

[0010] To achieve the above objectives, according to one aspect of the present invention, an additive masterbatch is provided, the raw materials of which include a resin base material, a high-melting-point additive, and a low-melting-point additive; wherein the high-melting-point additive has a melting point > 40°C, and the low-melting-point additive has a melting point ≤ 40°C.

[0011] Furthermore, the low-melting-point additive is a liquid or paste at room temperature, or a solid with a melting point ≤40°C; preferably, the high-melting-point additive has a melting point greater than 80°C, more preferably greater than 100°C, even more preferably greater than 150°C, and even more preferably greater than 200°C.

[0012] Furthermore, the low-melting-point additive is a weather-resistant additive with a melting point ≤40℃, preferably a light stabilizer with a melting point ≤40℃; more preferably, the light stabilizer is a hindered amine light stabilizer and / or an ultraviolet absorber, more preferably a hindered amine light stabilizer or a combination thereof.

[0013] Further, the hindered amine light stabilizer or its composition is selected from one or more of the following: the reaction product of di(2,2,6,6-tetramethyl-4-piperidinyl) sebacate and tert-butyl hydroperoxide with octane; 2,2,6,6-tetramethyl-4-piperidinyl stearate; a mixture of bis(1,2,2,6,6,-pentamethyl-4-piperidinyl) sebacate and mono(1,2,2,6,6,-pentamethyl-4-piperidinyl) sebacate; and a mixture of bis(2,2,6,6-tetramethyl-1-undecyloxy-4-yl) carbonate 2,2,6,6-tetramethyl-4-piperidinyl stearate and n-hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate.

[0014] Further, the ultraviolet absorber is selected from one or more of benzotriazole ultraviolet absorbers, cyanoacrylate ultraviolet absorbers, benzamide ultraviolet absorbers, benzophenone ultraviolet absorbers, hydroxyphenyltriazine ultraviolet absorbers, oxaloaniline ultraviolet absorbers, or salicylate ultraviolet absorbers; more preferably, the ultraviolet absorber is selected from one or more of the reaction product of methyl 3-(3-(2H-benzotriazole-2-yl)-5-tert-butyl-4-hydroxyphenyl)propionate and PEG 300, hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate, 2-cyano-3,3-diphenylacrylate-2'-ethylhexyl ester, and N-(ethoxycarbonylphenyl)-N'-methyl-N'-phenylformamidinium.

[0015] Further, the high-melting-point additive is an organic and / or inorganic substance, preferably a polymeric additive; more preferably, the high-melting-point additive is a polymeric organic additive with a relative molecular mass greater than 500, and even more preferably, a polymeric organic additive with a relative molecular mass greater than 600; further preferably, the high-melting-point additive is selected from one or more of tris[2,4-di-tert-butylphenyl]phosphite, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, and polyethylene wax; preferably, the resin matrix is... Thermoplastic resin; more preferably, the thermoplastic resin is selected from one or more of polyolefins, polyesters, polyethers, polyketides, polyamides, polyurethanes, polystyrene, high-impact styrene, polyacrylates, polymethacrylates, polyacetals, polyacrylonitrile, polybutadiene, acrylonitrile-butadiene-styrene trimer, styrene-acrylonitrile copolymers, acrylate-styrene-acrylonitrile trimer, cellulose acetate butyrate, cellulose polymers, polyimides, polyamide-imides, polyetherimides, polyphenylene sulfide, polyphenylene ether, polysulfone, polyethersulfone, polyvinyl chloride, polycarbonate, polyoxymethylene, and ethylene-vinyl acetate polymers; more preferably, the resin matrix is ​​a polyolefin; even more preferably, the polyolefin is selected from polypropylene and / or polyethylene.

[0016] Further, by weight, the raw materials of the polymer material additive masterbatch include 30-70 parts of resin base material, 0.1-30 parts of high-melting-point additive, and 30-70 parts of low-melting-point additive; more preferably, by weight, the raw materials of the polymer material additive masterbatch include 30-70 parts of resin base material, 1-25 parts of high-melting-point additive, and 30-70 parts of low-melting-point additive; even more preferably, by weight, the raw materials of the polymer material additive masterbatch include 40-60 parts of resin base material, 1-20 parts of high-melting-point additive, and 40-60 parts of low-melting-point additive; even more preferably, the weight ratio of high-melting-point additive to low-melting-point additive is 1:3-15, and most preferably 1:5-15.

[0017] Further, the low-melting-point additive is one or more of a mixture of 2,2,6,6-tetramethyl-4-piperidine stearate, 2,2,6,6-tetramethyl-4-piperidine stearate and hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate, the resin base is polyethylene or polypropylene, and the high-melting-point additive is one or more of tris[2,4-di-tert-butylphenyl] phosphite, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, and polyethylene wax;

[0018] Preferably, the additive masterbatch comprises: 1-20 parts of tris[2,4-di-tert-butylphenyl]phosphite, 30-50 parts of 2,2,6,6-tetramethyl-4-piperidine stearate, and 30-50 parts of polypropylene resin; or 1-20 parts of 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, 30-50 parts of 2,2,6,6-tetramethyl-4-piperidine stearate, and 30-50 parts of polypropylene resin. 0 parts polypropylene resin; or 1-20 parts 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, 30-50 parts 2,2,6,6-tetramethyl-4-piperidine stearate and 30-50 parts polypropylene resin; or 0.1-10 parts tris[2,4-di-tert-butylphenyl]phosphite, 0.1-10 parts 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, 30-50 parts 2,2,6,6-Tetramethyl-4-piperidine stearate and 30-50 parts of polypropylene resin; or 0.1-10 parts of tris[2,4-di-tert-butylphenyl]phosphite, 0.1-10 parts of 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, 30-50 parts of 2,2,6,6-tetramethyl-4-piperidine stearate and 30-50 parts of polypropylene resin; or 0.1-1 0 parts polyethylene wax, 0.1 to 10 parts 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione and / or tris[2,4-di-tert-butylphenyl]phosphite and / or 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, 30 to 50 parts 2,2,6,6-tetramethyl-4-piperidine stearate and 30 to 50 parts polypropylene resin.

[0019] Furthermore, the polymer material additive masterbatch is formed by sequentially extruding, granulating, drying, and cooling the raw materials using a screw extruder. Preferably, underwater pelletizing is used for granulation, with an operating temperature of 190–230°C.

[0020] Furthermore, the particle size of the polymer material additive masterbatch is 1–5 mm.

[0021] According to another aspect of the present invention, the application of the above-mentioned additive masterbatch in polymer materials is also provided.

[0022] This invention effectively solves the problems of easy adhesion and clumping of low-melting-point additive masterbatches and complex preparation processes. The additive masterbatches prepared by this invention are not prone to clumping, and can be prepared using only common equipment and processes for preparing masterbatches. The operation is simple and can prepare additive masterbatch products with different particle sizes. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0024] Figure 1 A photograph of a product containing large-particle additive masterbatch prepared according to one embodiment of the present invention is shown.

[0025] Figure 2 A photograph of a small-particle additive masterbatch prepared according to one embodiment of the present invention is shown.

[0026] Figure 3 The images show photographs of the adjuvant masterbatch prepared in Example 1 of the present invention, wherein (a) is a photograph before testing and (b) is a photograph after testing;

[0027] Figure 4 The images show the auxiliary masterbatch prepared in Example 2 of the present invention, wherein (a) is a photo before testing and (b) is a photo after testing;

[0028] Figure 5 The images show the auxiliary masterbatch prepared in Example 3 of the present invention, wherein (a) is a photo before testing and (b) is a photo after testing;

[0029] Figure 6 The images show the auxiliary masterbatch prepared in Example 4 of the present invention, wherein (a) is a photo before testing and (b) is a photo after testing;

[0030] Figure 7 The images show the auxiliary masterbatch prepared in Example 5 of the present invention, wherein (a) is a photo before testing and (b) is a photo after testing;

[0031] Figure 8 The images show the auxiliary masterbatch prepared in Example 6 of the present invention, wherein (a) is a photo before testing and (b) is a photo after testing;

[0032] Figure 9 The images show the auxiliary masterbatch prepared in Example 7 of the present invention, wherein (a) is a photo before testing and (b) is a photo after testing;

[0033] Figure 10 The images show photographs of the adjuvant masterbatch prepared in Example 8 of the present invention, wherein (a) is a photograph before testing and (b) is a photograph after testing;

[0034] Figure 11 The images show the auxiliary masterbatch prepared in Example 9 of the present invention, wherein (a) is a photo before testing and (b) is a photo after testing;

[0035] Figure 12 The images show photographs of the adjuvant masterbatch prepared in Example 10 of the present invention, wherein (a) is a photograph before testing and (b) is a photograph after testing;

[0036] Figure 13 The images show photographs of the adjuvant masterbatch prepared in Example 11 of the present invention, wherein (a) is a photograph before testing and (b) is a photograph after testing;

[0037] Figure 14 The images show photographs of the adjuvant masterbatch prepared in Example 12 of the present invention, wherein (a) is a photograph before testing and (b) is a photograph after testing;

[0038] Figure 15 The images show photographs of the adjuvant masterbatch prepared in Example 13 of the present invention, wherein (a) is a photograph before testing and (b) is a photograph after testing;

[0039] Figure 16 The photographs shown are of the adjuvant masterbatch in Comparative Example 1 after testing.

[0040] Figure 17 The photographs shown are of the adjuvant masterbatch in Comparative Example 2 after testing.

[0041] Figure 18 Photographs of the auxiliary masterbatch in Comparative Example 3 are shown, where (a) is the product at the beginning of production, (b) is the product after 5 minutes of production, and (c) is the untested product. Detailed Implementation

[0042] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0043] As described in the background section, low-melting-point additive masterbatches are prone to agglomeration. Existing solutions include introducing components that can adsorb low-melting-point additives to reduce additive precipitation and thus lower the risk of masterbatch agglomeration, or extruding a sheath over the masterbatch surface to achieve an anti-agglomeration effect. However, existing solutions either introduce unconventional adsorbents or involve complex preparation processes, making them difficult to implement. Against this backdrop, the present invention provides a simpler and more effective solution that completely solves the problem of easy agglomeration of additive masterbatches, while also offering a simple additive masterbatch preparation process.

[0044] In a typical embodiment of the present invention, an additive masterbatch is provided, the raw materials of which include a resin base material, a high-melting-point additive, and a low-melting-point additive; wherein the high-melting-point additive has a melting point >40°C, and the low-melting-point additive has a melting point ≤40°C.

[0045] Low-melting-point additives are prone to precipitation in masterbatch resin substrates. This is not only due to their low melting point but also to poor compatibility between the two. The resin substrate struggles to fully coat the surface of the low-melting-point additive. As the temperature rises, precipitation occurs due to the melting or increased fluidity of the low-melting-point additive, especially near the surface of the masterbatch. The additive masterbatch provided by this invention, in addition to the resin substrate and low-melting-point additive, also incorporates a high-melting-point additive with a melting point >40℃. During masterbatch preparation, the raw materials typically undergo screw extrusion, granulation, drying, and cooling. The high-melting-point additive introduced in this invention can, during the screw extrusion and granulation stages, melt and disperse uniformly in the resin substrate along with the low-melting-point additive. Subsequently, as the processing temperature decreases, the high-melting-point additive solidifies first and coats the surface of the low-melting-point additive, forming a protective barrier. This effectively inhibits the adhesion and clumping of the additive masterbatch during subsequent transportation and use.

[0046] In addition, the additive masterbatch provided by this invention can be produced using conventional granulation processes. It should also be noted that the inventors of this application have discovered that masterbatch granulation also has certain requirements regarding particle size. Generally, it needs to be prepared into large or small particles to meet the different downstream material addition requirements. The particle size of small particle masterbatch is typically (2±1)×(2±1) mm, and the particle size of large particle masterbatch is typically (4±1)×(4±1) mm. During the granulation process of the raw materials of this invention, the material melt has high strength, which can generate high melt pressure, ensuring that it can smoothly pass through the small-hole die head to form small-diameter masterbatch particles. Furthermore, the masterbatch has a round and full shape with good flowability. Therefore, the particle size range of the polymer material additive masterbatch of this invention is adjustable and relatively wide, with good molding performance. The formed large particle masterbatch and small particle masterbatch are respectively as follows: Figure 1 and Figure 2 As shown.

[0047] The greater the difference in melting points between high-melting-point and low-melting-point additives, the more beneficial it is for the high-melting-point additive to form a protective film on the surface of the low-melting-point additive, thus promoting better anti-caking and anti-adhesion of the masterbatch. In a preferred embodiment, the low-melting-point additive of the present invention is a liquid or paste at room temperature, or a solid with a melting point ≤40°C. The high-melting-point additive has a melting point greater than 80°C, more preferably greater than 100°C, further preferably greater than 150°C, and even more preferably greater than 200°C.

[0048] Preferably, the low-melting-point additive is a weather-resistant additive with a melting point ≤40℃, and more preferably a light stabilizer with a melting point ≤40℃. This invention is more applicable to the aforementioned low-melting-point additives, and has a more significant effect in improving problems such as masterbatch agglomeration. Preferably, the light stabilizer is a hindered amine light stabilizer and / or an ultraviolet absorber, more preferably a hindered amine light stabilizer or a combination thereof.

[0049] For example, hindered amine light stabilizers include, but are not limited to, the reaction product of di(2,2,6,6-tetramethyl-4-piperidinyl) sebacate with tert-butyl hydroperoxide and octane (UV-123), 2,2,6,6-tetramethyl-4-piperidinyl stearate (UV-3853), a mixture of bis(1,2,2,6,6,-pentamethyl-4-piperidinyl) sebacate and mono(1,2,2,6,6,-pentamethyl-4-piperidinyl) sebacate (UV-292), and bis(2,2,6,6-tetramethyl-1- One or more of undecyloxy-4-yl)-carbonates; the ultraviolet absorber includes, but is not limited to, one or more of benzotriazole ultraviolet absorbers, cyanoacrylate ultraviolet absorbers, benzamide ultraviolet absorbers, benzophenone ultraviolet absorbers, hydroxyphenyltriazine ultraviolet absorbers, oxaloaniline ultraviolet absorbers, or salicylate ultraviolet absorbers; more preferably, the ultraviolet absorber is selected from one or more of the reaction product of methyl 3-(3-(2H-benzotriazole-2-yl)-5-tert-butyl-4-hydroxyphenyl)propionate and PEG 300 (UV-1130), hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate (UV-2908), 2-cyano-3,3-diphenylacrylate-2'-ethylhexyl ester (UV-3039), and N-(ethoxycarbonylphenyl)-N'-methyl-N'-phenylformamidinium (UV-1). The composition of the hindered amine light stabilizer and ultraviolet absorber is a mixture of 2,2,6,6-tetramethyl-4-piperidine stearate (UV-3853) and n-hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate (UV2908) (UV-3808).

[0050] In a preferred embodiment, the high-melting-point additive is an organic and / or inorganic substance, preferably a polymeric additive. Using a polymeric additive provides better dispersibility and compatibility in the resin matrix, enabling better coating of the low-melting-point additive with a lower dosage, resulting in better anti-caking ability of the masterbatch. More preferably, the high-melting-point additive is a polymeric organic additive with a relative molecular mass greater than 500. By selecting the above-mentioned polymeric organic additive, it can precipitate onto the surface of the masterbatch along with the melted low-melting-point additive during the granulation process. It is worth noting that this invention even utilizes the precipitation property of the high-melting-point additive, allowing it to fully precipitate during the granulation process of masterbatch preparation, thereby enabling it to more fully solidify and coat the surrounding precipitated low-melting-point additive during subsequent cooling, thus better suppressing agglomeration after masterbatch formation. Using high-melting-point additives with a relative molecular weight greater than 500 has a better promoting effect on preventing the final masterbatch product from sticking and agglomerating. More preferably, the high-melting-point additive is a polymeric organic additive with a relative molecular mass greater than 600.

[0051] In a preferred embodiment, the high-melting-point additive is selected from one or more of the following: tris[2,4-di-tert-butylphenyl]phosphite (antioxidant 168, melting point 183-187℃), 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione (antioxidant 3114, melting point 218-223℃), 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene (antioxidant 330, melting point 240-245℃), and polyethylene wax (melting point 90-120℃). Besides better performing the above-mentioned precipitation and encapsulation effects, these high-melting-point additives, when used together with the aforementioned low-melting-point additives to form masterbatch, do not affect the subsequent application of the masterbatch and may even provide better anti-aging effects. In particular, the use of functional additives antioxidants 168, 330, and 3114 not only prevents the precipitation of low-melting-point additives but also provides anti-aging benefits when used in resin-based materials. Furthermore, the addition ratio of these high-melting-point additives is not high enough to effectively solve the problem of masterbatch agglomeration.

[0052] The resin matrix of this invention can be adjusted according to the usage environment of the additive masterbatch. For example, if the additive masterbatch needs to be added to a polypropylene resin system, the resin matrix can be polypropylene resin; if the additive masterbatch needs to be added to a polyethylene resin system, the resin matrix can be polyethylene resin. Preferably, the resin matrix is ​​a thermoplastic resin. Thermoplastic resin can be used directly as a component of plastic products during subsequent processing (even if it differs from the product composition, the amount of additive masterbatch added is often small and will not have other effects on the performance of the plastic product), and it can also act as a better first barrier against molten low-melting-point additives.

[0053] More preferably, the resin matrix is ​​a thermoplastic resin; even more preferably, the thermoplastic resin is selected from one or more of the following: polyolefin, polyester, polyether, polyketone, polyamide, polyurethane, polystyrene, high-impact styrene, polyacrylate, polymethacrylate, polyacetal, polyacrylonitrile, polybutadiene, acrylonitrile-butadiene-styrene trimer, styrene-acrylonitrile copolymer, acrylate-styrene-acrylonitrile trimer, cellulose acetate butyrate, cellulose polymer, polyimide, polyamide-imide, polyether-imide, polyphenylene sulfide, polyphenylene ether, polysulfone, polyethersulfone, polyvinyl chloride, polycarbonate, polyoxymethylene, and ethylene-vinyl acetate polymer.

[0054] More preferably, the resin matrix is ​​a polyolefin. Using polyolefin as the resin matrix offers greater versatility, and the aforementioned high-melting-point additives, when combined with it, can better improve the overall performance of the masterbatch. Even more preferably, the polyolefin is selected from polypropylene and / or polyethylene.

[0055] In a preferred embodiment, the raw materials of the additive masterbatch, by weight, include 30-70 parts of resin base material (e.g., 30, 32, 35, 40, 42, 44, 45, 46, 48, 50, 52, 55, 58, 60, 65, or 70 parts), and 0.1-30 parts of high-melting-point additive (e.g., 0.1, 0.2, 0.5, 0.8, 1, 2, 3, 5, 6, 8, 10, or 1 part). The additive masterbatch comprises 2 parts, 15 parts, 16 parts, 18 parts, 20 parts, 24 parts, 28 parts, and 30 parts of low-melting-point additives (e.g., 30 parts, 32 parts, 35 parts, 40 parts, 42 parts, 44 parts, 45 parts, 46 parts, 48 ​​parts, 50 parts, 52 parts, 55 parts, 58 parts, 60 parts, 65 parts, and 70 parts by weight); more preferably, the raw materials of the additive masterbatch include 30 to 70 parts of resin base material, 1 to 25 parts of high-melting-point additives, and 30 to 70 parts of low-melting-point additives by weight. Further preferably, the raw materials of the polymer material additive masterbatch include 40 to 60 parts of resin base material, 1 to 20 parts of high-melting-point additives, and 40 to 60 parts of low-melting-point additives by weight. More preferably, the weight ratio of high-melting-point additive to low-melting-point additive is 1:3 to 15, and most preferably 1:5 to 15. By controlling the amount of each component within the above range, the amount of low-melting-point additive can be maximized while effectively suppressing problems such as agglomeration.

[0056] In a preferred embodiment, the low-melting-point additive is one or more of a mixture of 2,2,6,6-tetramethyl-4-piperidine stearate, 2,2,6,6-tetramethyl-4-piperidine stearate and n-hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate, the resin base material is polyethylene or polypropylene, and the high-melting-point additive is one or more of tris[2,4-di-tert-butylphenyl] phosphite (antioxidant 168), 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione (antioxidant 3114), 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene (antioxidant 330), and polyethylene wax. By compounding high-melting-point additives with low-melting-point additives and resin base materials in the above manner, the resulting masterbatch has better anti-blocking and agglomeration properties, and the additives themselves also exhibit better anti-aging performance.

[0057] For example, the adjuvant masterbatch includes:

[0058] 1–20 parts tris[2,4-di-tert-butylphenyl]phosphite, 30–50 parts 2,2,6,6-tetramethyl-4-piperidine stearate, and 30–50 parts polypropylene resin; or

[0059] 1–20 parts of 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, 30–50 parts of 2,2,6,6-tetramethyl-4-piperidine stearate, and 30–50 parts of polypropylene resin; or

[0060] 1–20 parts of 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, 30–50 parts of 2,2,6,6-tetramethyl-4-piperidine stearate, and 30–50 parts of polypropylene resin; or

[0061] 0.1–10 parts of tris[2,4-di-tert-butylphenyl]phosphite, 0.1–10 parts of 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, 30–50 parts of 2,2,6,6-tetramethyl-4-piperidine stearate, and 30–50 parts of polypropylene resin; or

[0062] 0.1–10 parts of tris[2,4-di-tert-butylphenyl]phosphite, 0.1–10 parts of 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, 30–50 parts of 2,2,6,6-tetramethyl-4-piperidine stearate, and 30–50 parts of polypropylene resin; or

[0063] 0.1–10 parts polyethylene wax, 0.1–10 parts 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione and / or tris[2,4-di-tert-butylphenyl]phosphite and / or 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, 30–50 parts 2,2,6,6-tetramethyl-4-piperidine stearate and 30–50 parts polypropylene resin.

[0064] As mentioned above, the granulation process of the masterbatch in this invention can be carried out using conventional methods in the art. For example, the additive masterbatch is formed by sequentially extruding, granulating, drying, and cooling the raw material through a screw extruder. Preferably, underwater pelletizing is used, with an operating temperature of 190–230°C.

[0065] The particle size of the polymer material additive masterbatch of the present invention can be adjusted as needed, and its particle size is preferably 1-5 mm.

[0066] Furthermore, this invention also provides the application of the aforementioned additive masterbatch in polymer materials. Because the additive masterbatch has excellent anti-caking properties, it also facilitates the dispersion and compatibility of the masterbatch during polymer material processing. Specifically, the base materials of the polymer materials include, but are not limited to, polyolefins, polyvinyl chloride, polyacetal, polyamide, styrene polymers, polyurethane, ABS resin, etc. Specific polymer material products include, but are not limited to, plastic products, thermoplastic elastomer products, rubber products, coatings, adhesives, etc.

[0067] In summary, the present invention has the following advantages in terms of operation process, equipment applicability, stable production, and product quality and appearance compared with others:

[0068] (1) The additive masterbatch of the present invention has a high melting point additive as a protective layer, and the prepared additive masterbatch does not clump even in storage and transportation environments with alternating high and low temperatures.

[0069] (2) The preparation process of the additive masterbatch of the present invention is simple, easy to mass-produce in industrialized industries, and has high stability; and does not affect the processing of downstream materials.

[0070] (3) The present invention can prepare products with large and small particles. After 24 hours and 50°C beaker with 500G weights, the flowability of the additive masterbatch of the present invention is grade 1-2, which meets the diverse needs of downstream material processing.

[0071] The present application will be further described in detail below with reference to specific embodiments, which should not be construed as limiting the scope of protection claimed in the present application.

[0072] Example 1

[0073] In this embodiment, an automatic loss-in-weight weigher is used. PP resin and antioxidant 168 are added to the twin-screw extruder according to the proportions in Table 1 below. UV-3853 liquid is added to the twin-screw extruder using a liquid metering pump. After screw extrusion (extrusion process is shown in Table 2), the mixture is water-cooled, pelletized, dried, and cooled to obtain masterbatch with a particle size of 3.5 to 5 mm.

[0074] Table 1

[0075] Antioxidant 168 UV-3853 PP resin 6％ 50％ 44％

[0076] Table 2

[0077]

[0078] The masterbatch product underwent a 24-hour, 50°C beaker with a 500g weight flowability test. The results are shown in the table below, and photos before and after the test are shown below. Figure 3 (a) is a photo before the test, and (b) is a photo after the test.

[0079] Example 2

[0080] The only difference between this embodiment and Example 1 is that the component ratio is shown in Table 3, the extrusion process uses a small-diameter die (extrusion process is shown in Table 4), and the prepared masterbatch has a particle size of 1.0 to 2.5 mm.

[0081] Table 3

[0082] Antioxidant 168 UV-3853 PP resin 4％ 50％ 46％

[0083] Table 4

[0084]

[0085] The masterbatch product underwent a 24-hour, 50°C beaker with a 500g weight flowability test. The results are shown in the table below, and photos before and after the test are shown below. Figure 4 (a) is a photo before the test, and (b) is a photo after the test.

[0086] Example 3

[0087] The only difference between this embodiment and Example 1 is that the component ratio is shown in Table 5, the extrusion process is shown in Table 6, and the particle size of the prepared masterbatch is 3.5-5 mm.

[0088] Table 5

[0089] Antioxidant 168 UV-3853 PP resin 5％ 45％ 50％

[0090] Table 6

[0091]

[0092] The masterbatch product underwent a 24-hour, 50°C beaker with a 500g weight flowability test. The results are shown in the table below, and photos before and after the test are shown below. Figure 5 (a) is a photo before the test, and (b) is a photo after the test.

[0093] Example 4

[0094] The only difference between this embodiment and Example 1 is that the component ratio is shown in Table 7, the extrusion process is shown in Table 8, and the particle size of the prepared masterbatch is 3.5-5 mm.

[0095] Table 7

[0096] Antioxidant 168 UV-3853 PP resin 4％ 46％ 50％

[0097] Table 8

[0098]

[0099] The masterbatch product underwent a 24-hour, 50°C beaker with a 500g weight flowability test. The results are shown in the table below, and photos before and after the test are shown below. Figure 6 (a) is a photo before the test, and (b) is a photo after the test.

[0100] Example 5

[0101] The only difference between this embodiment and Example 1 is that the component ratio is shown in Table 9, the extrusion process is shown in Table 10, and the particle size of the prepared masterbatch is 1.0 to 2.5 mm.

[0102] Table 9

[0103] Antioxidant 3114 UV-3853 PP resin 6％ 50％ 44％

[0104] Table 10

[0105]

[0106] The masterbatch product underwent a 24-hour, 50°C beaker with a 500g weight flowability test. The results are shown in the table below, and photos before and after the test are shown below. Figure 7 (a) is a photo before the test, and (b) is a photo after the test.

[0107] Example 6

[0108] The only difference between this embodiment and Example 1 is that the component ratio is shown in Table 11, the extrusion process is shown in Table 12, and the particle size of the prepared masterbatch is 1.0 to 2.5 mm.

[0109] Table 11

[0110] Antioxidant 330 UV-3853 PP resin 8％ 50％ 42％

[0111] Table 12

[0112]

[0113] The masterbatch product underwent a 24-hour, 50°C beaker with a 500g weight flowability test. The results are shown in the table below, and photos before and after the test are shown below. Figure 8 (a) is a photo before the test, and (b) is a photo after the test.

[0114] Example 7

[0115] The only difference between this embodiment and Example 1 is that the component ratio is shown in Table 13, the extrusion process is shown in Table 14, and the particle size of the prepared masterbatch is 1.0 to 2.5 mm.

[0116] Table 13

[0117] Antioxidant 3114 Antioxidant 168 UV-3853 PP resin 0.5％ 4.5％ 45％ 50％

[0118] Table 14

[0119]

[0120] The masterbatch product underwent a 24-hour, 50°C beaker with a 500g weight flowability test. The results are shown in the table below, and photos before and after the test are shown below. Figure 9 (a) is a photo before the test, and (b) is a photo after the test.

[0121] Example 8

[0122] The only difference between this embodiment and Example 1 is that the component ratio is shown in Table 15, the extrusion process is shown in Table 16, and the particle size of the prepared masterbatch is 3.5-5 mm.

[0123] Table 15

[0124] Antioxidant 330 Antioxidant 168 UV-3853 PP resin 2％ 6％ 50％ 42％

[0125] Table 16

[0126]

[0127] The masterbatch product underwent a 24-hour, 50°C beaker with a 500g weight flowability test. The results are shown in the table below, and photos before and after the test are shown below. Figure 10 (a) is a photo before the test, and (b) is a photo after the test.

[0128] Example 9

[0129] The only difference between this embodiment and Example 1 is that the component ratio is shown in Table 17, the extrusion process is shown in Table 18, and the particle size of the prepared masterbatch is 3.5-5 mm.

[0130] Table 17

[0131] Antioxidant 3114 Antioxidant 168 UV-3853 PP resin 2％ 6％ 50％ 42％

[0132] Table 18

[0133]

[0134] The masterbatch product underwent a 24-hour, 50°C beaker with a 500g weight flowability test. The results are shown in the table below, and photos before and after the test are shown below. Figure 11 (a) is a photo before the test, and (b) is a photo after the test.

[0135] Example 10

[0136] The only difference between this embodiment and Example 1 is that the component ratio is shown in Table 19, the extrusion process is shown in Table 20, and the particle size of the prepared masterbatch is 1.0 to 2.5 mm.

[0137] Table 19

[0138] Antioxidant 330 UV-3853 PP resin 8％ 50％ 42％

[0139] Table 20

[0140]

[0141] The masterbatch product underwent a 24-hour, 50°C beaker with a 500g weight flowability test. The results are shown in the table below, and photos before and after the test are shown below. Figure 12 (a) is a photo before the test, and (b) is a photo after the test.

[0142] Example 11

[0143] The only difference between this embodiment and Example 1 is that the component ratio is shown in Table 21, the extrusion process is shown in Table 22, and the particle size of the prepared masterbatch is 1.0 to 2.5 mm.

[0144] Table 21

[0145] Antioxidant 330 UV-3853 PP resin 10％ 50％ 40％

[0146] Table 22

[0147]

[0148] The masterbatch product underwent a 24-hour, 50°C beaker with a 500g weight flowability test. The results are shown in the table below, and photos before and after the test are shown below. Figure 13 (a) is a photo before the test, and (b) is a photo after the test.

[0149] Example 12

[0150] The only difference between this embodiment and Example 1 is that the component ratio is shown in Table 23, the extrusion process is shown in Table 24, and the particle size of the prepared masterbatch is 1.0 to 2.5 mm.

[0151] Table 23

[0152] Antioxidant 330 Antioxidant 168 UV-3853 PP resin 2％ 6％ 50％ 42％

[0153] Table 24

[0154]

[0155] The masterbatch product underwent a 24-hour, 50°C beaker with a 500g weight flowability test. The results are shown in the table below, and photos before and after the test are shown below. Figure 14 (a) is a photo before the test, and (b) is a photo after the test.

[0156] Example 13

[0157] The only difference between this embodiment and Example 1 is that the component ratio is shown in Table 25, the extrusion process is shown in Table 26, and the particle size of the prepared masterbatch is 1.0 to 2.5 mm.

[0158] Table 25

[0159] Polyethylene wax Antioxidant 168 UV-3853 PP resin 4％ 6％ 50％ 40％

[0160] Table 26

[0161]

[0162] The masterbatch product underwent a 24-hour, 50°C beaker with a 500g weight flowability test. The results are shown in the table below, and photos before and after the test are shown below. Figure 15 (a) is a photo before the test, and (b) is a photo after the test.

[0163] Comparative Example 1

[0164] Commercially available UV-3853 PP masterbatch product 1 (UV-3853 weight content 50%) underwent a 24-hour, 50°C beaker with a 500g weight flowability test. (Photo shown). Figure 16 As shown.

[0165] The above-mentioned product uses co-extrusion technology to form a protective sleeve on the surface of ordinary masterbatch products. However, the cut surface is not protected by the sleeve when the cutter is used to cut the pellets, and the color is very dark, light yellow, and there will still be clumping.

[0166] Comparative Example 2

[0167] Commercially available UV-3853 PP masterbatch product 2 (UV-3853 weight content 50%) produced a product with a flowability grade of 4 after foaming. The masterbatch product underwent a 24-hour, 50°C beaker flowability test with a 500g weight added. (Photos are shown below.) Figure 17 As shown, severe clumping occurs.

[0168] Comparative Example 3

[0169] The product (UV-3853 weight content 50%) prepared according to method CN 113462079 A was found to have the following problems during production: due to the thinness of the material and the low melt pressure, it was difficult to form a pressure differential during granulation. Only the first 5 minutes could the granules be relatively normal; afterwards, flaky granules appeared with severe tailing. Furthermore, the thinness of the material easily caused material overflow and die blockage, resulting in low material utilization and low product yield. Photos of the initial production, the product after 5 minutes, and the tested product are shown below. Figure 18 Figure (a) shows the product at the beginning of production, Figure (b) shows the product after 5 minutes of production, and Figure (c) shows a photograph of the untested product. Figure 18 As shown.

[0170] Although the product produced by this formula does not clump, the material's fluidity is close to that of pure wax after melting. The extremely low resin content results in a masterbatch with low strength, severe tailing, poor regularity, and very low density. This makes the masterbatch difficult to process and has poor machine adaptability, significantly hindering stable mass production. Furthermore, the processing and use of this masterbatch carries the risk of excessively low strength and product cracking. Due to the material characteristics, this process cannot produce small-particle products.

[0171] After the masterbatches of the above examples and comparative examples were prepared, their appearance was observed and the yield (quantity of qualified products / quantity of raw materials) was calculated. The results are shown in Table 27.

[0172] The above-described embodiments and comparative masterbatch products underwent a 24-hour, 50°C beaker with a 500g weight flowability test. The specific procedures are as follows:

[0173] 1. Place 50g of masterbatch in a beaker, place a container (round stainless steel sheet) on top of the powder or granules, and place a 500g weight on top of the container.

[0174] 2. Place the beaker in a forced-air oven at 50°C for 24 hours (use a new sample for each temperature exposure);

[0175] 3. After removing from the refrigerator, allow it to cool to room temperature for two hours.

[0176] 4. Use the following grading system to classify the agglomeration, blockage, brittleness, and flow properties of the samples:

[0177] Level 1 - Free Flow;

[0178] Level 2 - Some blocks, easily broken (fragile);

[0179] Level 3 - Mostly blocky, can be broken down with some effort (relatively fragile);

[0180] Level 4 - Most blocks do not split;

[0181] Grade 5 - Molten Solid;

[0182] The results are shown in Table 27 below:

[0183] Table 27

[0184]

[0185]

[0186] The results above show that the low-melting-point additive masterbatch produced by this invention has a very good anti-caking effect. After being baked in a forced air convection oven at 50°C for 24 hours, no adhesion or clumping was observed.

[0187] Furthermore, the additive masterbatch production method of the present invention is simple, has stable process, high output, wide applicability to equipment, low cost, and no usage risk for downstream customers, making it highly competitive in domestic and international markets.

[0188] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An additive masterbatch, characterized in that, The raw materials of the additive masterbatch, by weight, include 30-70 parts of resin base material, 1-30 parts of high-melting-point additive and 30-70 parts of low-melting-point additive; wherein the melting point of the high-melting-point additive is >150℃ and the melting point of the low-melting-point additive is ≤40℃. The high-melting-point additive is selected from one or more of tris[2,4-di-tert-butylphenyl]phosphite, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, and 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene; The weight ratio of the high-melting-point additive to the low-melting-point additive is 1:3~15.

2. The additive masterbatch according to claim 1, characterized in that, The low-melting-point additive is a liquid or paste at room temperature, or a solid with a melting point ≤40℃.

3. The additive masterbatch according to claim 1, characterized in that, The high-melting-point additive has a melting point greater than 200°C.

4. The additive masterbatch according to claim 1, characterized in that, The low-melting-point additive is a weather-resistant additive with a melting point ≤40℃.

5. The additive masterbatch according to claim 4, characterized in that, The weather-resistant additive is a light stabilizer with a melting point ≤40℃.

6. The additive masterbatch according to claim 5, characterized in that, The light stabilizer is a hindered amine light stabilizer and / or an ultraviolet absorber.

7. The additive masterbatch according to claim 5, characterized in that, The light stabilizer is a hindered amine light stabilizer or a combination thereof.

8. The additive masterbatch according to claim 7, characterized in that, The hindered amine light stabilizer or its composition is selected from one or more of the following: the reaction product of bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate and tert-butyl hydroperoxide with octane; 2,2,6,6-tetramethyl-4-piperidinyl stearate; a mixture of bis(1,2,2,6,6,-pentamethyl-4-piperidinyl) sebacate and mono(1,2,2,6,6,-pentamethyl-4-piperidinyl) sebacate; and a mixture of bis(2,2,6,6-tetramethyl-1-undecyloxy-4-yl) carbonate 2,2,6,6-tetramethyl-4-piperidinyl stearate and n-hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate.

9. The additive masterbatch according to claim 6, characterized in that, The ultraviolet absorber is selected from one or more of the following: benzotriazole ultraviolet absorbers, cyanoacrylate ultraviolet absorbers, benzamide ultraviolet absorbers, benzophenone ultraviolet absorbers, hydroxyphenyltriazine ultraviolet absorbers, oxaloylaniline ultraviolet absorbers, or salicylate ultraviolet absorbers.

10. The additive masterbatch according to claim 6, characterized in that, The ultraviolet absorber is selected from one or more of the following: the reaction product of methyl 3-(3-(2H-benzotriazol-2-yl)-5-tert-butyl-4-hydroxyphenyl)propionate and PEG 300, hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate, 2-cyano-3,3-diphenylacrylate-2'-ethylhexyl ester, and N-(ethoxycarbonylphenyl)-N'-methyl-N'-phenylformamidinium.

11. The adjuvant masterbatch according to any one of claims 1 to 10, characterized in that, The resin substrate is a thermoplastic resin.

12. The adjuvant masterbatch according to claim 11, characterized in that, The thermoplastic resin is selected from one or more of the following: polyolefin, polyester, polyether, polyketone, polyamide, polyurethane, polystyrene, high-impact styrene, polyacrylate, polymethacrylate, polyacetal, polyacrylonitrile, polybutadiene, acrylonitrile-butadiene-styrene trimer, styrene-acrylonitrile copolymer, acrylate-styrene-acrylonitrile trimer, cellulose acetate butyrate, cellulose polymer, polyimide, polyamide-imide, polyether-imide, polyphenylene sulfide, polyphenylene ether, polysulfone, polyethersulfone, polyvinyl chloride, polycarbonate, polyoxymethylene, and ethylene-vinyl acetate polymer.

13. The adjuvant masterbatch according to claim 12, characterized in that, The resin substrate is the polyolefin.

14. The adjuvant masterbatch according to claim 13, characterized in that, The polyolefin is selected from polypropylene and / or polyethylene.

15. The adjuvant masterbatch according to any one of claims 1 to 10, characterized in that, The raw materials of the additive masterbatch, by weight, include 30-70 parts of the resin base material, 1-25 parts of the high-melting-point additive, and 30-70 parts of the low-melting-point additive.

16. The adjuvant masterbatch according to any one of claims 1 to 10, characterized in that, The raw materials of the additive masterbatch, by weight, include 40-60 parts of the resin base material, 1-20 parts of the high-melting-point additive, and 40-60 parts of the low-melting-point additive.

17. The adjuvant masterbatch according to any one of claims 1 to 10, characterized in that, The weight ratio of the high-melting-point additive to the low-melting-point additive is 1:5~15.

18. The adjuvant masterbatch according to any one of claims 1 to 10, characterized in that, The low-melting-point additive is one or more of a mixture of 2,2,6,6-tetramethyl-4-piperidine stearate, 2,2,6,6-tetramethyl-4-piperidine stearate and 3,5-di-tert-butyl-4-hydroxybenzoic acid n-hexadecyl ester, and the resin substrate is polyethylene or polypropylene.

19. The additive masterbatch according to claim 18, characterized in that, The auxiliary agent masterbatch includes: 1-20 parts tris[2,4-di-tert-butylphenyl]phosphite, 30-50 parts 2,2,6,6-tetramethyl-4-piperidine stearate, and 30-50 parts polypropylene resin; or 1-20 parts of 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, 30-50 parts of 2,2,6,6-tetramethyl-4-piperidine stearate, and 30-50 parts of polypropylene resin; or 1-20 parts of 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, 30-50 parts of 2,2,6,6-tetramethyl-4-piperidine stearate, and 30-50 parts of polypropylene resin; or 0.1-10 parts of tris[2,4-di-tert-butylphenyl]phosphite, 0.1-10 parts of 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, 30-50 parts of 2,2,6,6-tetramethyl-4-piperidine stearate, and 30-50 parts of polypropylene resin; or 0.1 to 10 parts of tris[2,4-di-tert-butylphenyl]phosphite, 0.1 to 10 parts of 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, 30 to 50 parts of 2,2,6,6-tetramethyl-4-piperidine stearate, and 30 to 50 parts of polypropylene resin.

20. The adjuvant masterbatch according to any one of claims 1 to 10, characterized in that, The additive masterbatch is formed by sequentially extruding, granulating, drying, and cooling the raw material using a screw extruder.

21. The additive masterbatch according to claim 20, characterized in that, The pelleting process employs underwater pelleting at an operating temperature of 190~230℃.

22. The additive masterbatch according to claim 20, characterized in that, The particle size of the additive masterbatch is 1~5mm.

23. The use of an additive masterbatch according to any one of claims 1 to 22 in polymer materials.

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