A Composition for Producing Polymeric Beads with Adjustable Refractive Index and Preparation Methods of Polymeric Beads Using Thereof

Abstract

The present invention provides a composition for manufacturing polymer beads and a method for manufacturing polymer beads using the same, comprising a main component comprising, based on 100% by weight of methyl methacrylate, 40 to 240% by weight of styrene, 8 to 40% by weight of divinylbenzene, 4 to 40% by weight of ethylene glycol dimethacrylate, and 1 to 10% by weight of an initiator; and an auxiliary component comprising, based on 100% by weight of a dispersion medium, 1 to 2% by weight of polyvinyl alcohol, wherein the main component and the auxiliary component are mixed in a weight ratio of 1:1 to 1.5. The composition for manufacturing polymer beads according to the present invention, specifically the composition for manufacturing polymer beads capable of controlling the refractive index, has the effect of reducing the difference in copolymerization degree per Bx by improving the polymerization rate of polystyrene and polymethyl methacrylate materials capable of radical polymerization using a dual crosslinking agent when manufacturing polymer beads capable of controlling the refractive index of the polymer beads.

Description

Technology Field

[0001] The present invention relates to a composition for manufacturing polymer beads capable of controlling the refractive index and a method for manufacturing polymer beads using the same. More specifically, the invention relates to a composition for manufacturing polymer beads capable of controlling the refractive index using styrene and methyl methacrylate, which have the most similar refractive index to polycarbonate (PC) and are capable of radical polymerization, and a method for manufacturing polymer beads using the same. Background Technology

[0003] Polymer beads are a general term for spherical particles with a uniform particle size distribution produced by emulsion polymerization or suspension polymerization.

[0004] These spherical polymer beads possess excellent rheological properties due to their spherical shape, and are currently widely used in various industrial fields, including optical products, signage, displays, lighting fixtures, cosmetics, paints, and molded plastics.

[0005] In particular, polymer beads used as light diffusing agents, such as light diffusing films and light diffusing plates which are core components of LCD BLUs (backlight units), have generally utilized materials such as polymethyl methacrylate or polystyrene to achieve a light diffusion effect based on the difference in refractive index between the film, binder, or matrix of the light diffusing plate.

[0006] In addition, recently, in order to exhibit various optical properties, the refractive indices of the light diffusing agents used are becoming very diverse. For example, the use of organic light diffusing agents having a refractive index higher than 1.49, which is the refractive index of polymethyl methacrylate, and inorganic particles having a low refractive index lower than 1.49 is increasing.

[0007] The refractive index of such polymers depends on the refractive index of the main resin that makes up the polymer. In the case of spherical polymer particles, the shape of the particles also affects the Hz or refraction of light in addition to the main refractive index of the particles, making it very difficult to finely adjust the actual refractive index of the particles.

[0008] In particular, the most common method for adjusting the refractive index of particles is to copolymerize two monomers with the same functional group and different refractive indices, but because the reaction rate varies depending on the type of polymer, it is difficult to copolymerize the two monomers at the desired ratio in a batch. Consequently, the refractive index of the particles changes slightly depending on the external temperature and conditions during polymerization, which has the disadvantage of large lot and BX differences in copolymer particles.

[0009] Consequently, the plastics market is shifting from conventional PMMA to PC as flame retardancy and durability become increasingly important. Unlike conventional PMMA (refractive index 1.49), PC is a material with a high refractive index of 1.59. Consequently, if conventional PMMA particles are used, the difference in refractive index becomes significant; consequently, if the same amount of acrylic particles used in existing optical products is applied, the Hz of the substrate decreases significantly. Therefore, it has become necessary to adjust the refractive index to match the substrate.

[0010] As such, to control the aforementioned refractive index, it is possible to use polystyrene and polymethyl methacrylate, which have the most similar refractive index to polycarbonate and are capable of radical polymerization; however, since the polymerization rates of the two materials differ, it is necessary to overcome this and improve the difference in the degree of copolymerization per Bx. Prior art literature

[0012] Registered Patent Publication No. 10-2429132 The problem to be solved

[0013] The present invention was created to overcome the aforementioned problems and aims to reduce the difference in copolymerization degree per Bx by improving the polymerization rate of polystyrene and polymethyl methacrylate materials capable of radical polymerization using a double crosslinking agent during the manufacture of polymer beads. means of solving the problem

[0015] The present invention

[0016] A subject comprising, based on 100% by weight of the total subject, 25 to 75% by weight of methyl methacrylate, 20 to 60% by weight of styrene, 3 to 15% by weight of divinylbenzene, and 2 to 15% by weight of ethylene glycol dimethacrylate;

[0017] A component comprising 95 to 99 weight% of a dispersion medium and 1 to 5 weight% of polyvinyl alcohol, based on 100 weight% of the total component; and

[0018] Includes an initiator, but,

[0019] A composition for manufacturing polymer beads is provided, comprising the above-mentioned subject, sub-sub

[0021] In addition, the present invention

[0022] A main component mixing step comprising mixing 25 to 75 weight% of methyl methacrylate, 20 to 60 weight% of styrene, 3 to 15 weight% of divinylbenzene, and 2 to 15 weight% of ethylene glycol dimethacrylate, based on 100 weight% of the total main component;

[0023] A main component and initiator mixing step in which an initiator is added to the mixture obtained after the above main component mixing step is completed, at a weight ratio of 1:0.001 to 0.1 relative to the total weight of the main component;

[0024] A component mixing step of mixing 95 to 99 weight% of a dispersion medium and 1 to 5 weight% of polyvinyl alcohol based on 100 weight% of the total component to dissolve the polyvinyl alcohol in the dispersion medium;

[0025] A premixing solution preparation step in which a mixture of auxiliary agents is mixed in a weight ratio of 1:1 to 1.5 relative to the total weight of the main agent to the mixture obtained after the above-mentioned main agent and initiator mixing step is completed, and then premixed by stirring at a speed of 850 to 950 rpm for 25 to 35 minutes;

[0026] An emulsion preparation step of preparing a homogenized emulsion by dispensing the premixing solution from the above premixing solution preparation step and stirring at a speed of 11,000 to 13,000 rpm for 5 to 15 minutes;

[0027] A first suspension polymerization reaction step in which the emulsion from the above emulsion preparation step is stirred under a nitrogen atmosphere at a speed of 150 to 250 rpm at a temperature range of 60 to 70°C for 6 to 8 hours to perform suspension polymerization;

[0028] A second suspension polymerization reaction step of suspending polymerization for 4 to 6 hours at a temperature range of 90 to 95℃ after the above first suspension polymerization reaction step is completed;

[0029] A filtration step for filtering the polymer synthesized by the above secondary suspension polymerization reaction step; and

[0030] A method for manufacturing polymer beads using a composition for manufacturing polymer beads is provided, comprising a washing and drying step in which the polymer that has undergone the above-mentioned filtration step is washed and then dried. Effects of the invention

[0032] The composition for manufacturing polymer beads according to the present invention, specifically the composition for manufacturing polymer beads capable of controlling the refractive index, has the effect of reducing the difference in copolymerization degree per Bx by improving the polymerization rate of polystyrene and polymethyl methacrylate materials capable of radical polymerization using a dual crosslinking agent when manufacturing polymer beads capable of controlling the refractive index of the polymer beads. Specific details for implementing the invention

[0034] The present invention will be described in detail below.

[0035] In one aspect, the present invention provides a composition for manufacturing polymer beads comprising, based on 100% by weight of the total main component, 25 to 75% by weight of methyl methacrylate, 20 to 60% by weight of styrene, 3 to 15% by weight of divinylbenzene, and 2 to 15% by weight of ethylene glycol dimethacrylate; based on 100% by weight of the total auxiliary component, 95 to 99% by weight of a dispersion medium and 1 to 5% by weight of polyvinyl alcohol; and an initiator, wherein the main component, the auxiliary component, and the initiator are mixed in a weight ratio of 1:1 to 1.5:0.001 to 0.1.

[0036] In another aspect, the present invention comprises: a main component mixing step of mixing 25 to 75 weight% of methyl methacrylate, 20 to 60 weight% of styrene, 3 to 15 weight% of divinylbenzene, and 2 to 15 weight% of ethylene glycol dimethacrylate, based on 100 weight% of the total main component; a main component and initiator mixing step of adding and mixing an initiator to the mixture obtained after the main component mixing step at a weight ratio of 1:0.001 to 0.1 relative to the total weight of the main component; and an auxiliary component mixing step of mixing 95 to 99 weight% of a dispersion medium and 1 to 5 weight% of polyvinyl alcohol, based on 100 weight% of the total auxiliary component, to dissolve the polyvinyl alcohol in the dispersion medium. A premixing solution preparation step in which a mixture of auxiliary agents is mixed with the mixture obtained after the above-mentioned main component and initiator mixing step is completed, at a weight ratio of 1:1 to 1.5 relative to the total weight of the main component, and then stirred at a speed of 850 to 950 rpm for 25 to 35 minutes to perform premixing; an emulsion preparation step in which a homogenized emulsion is prepared by dispensing the premixing solution from the above-mentioned premixing solution preparation step and stirring at a speed of 11,000 to 13,000 rpm for 5 to 15 minutes; a first suspension polymerization reaction step in which the emulsion from the above-mentioned emulsion preparation step is subjected to suspension polymerization by stirring at a speed of 150 to 250 rpm at a temperature range of 60 to 70°C for 6 to 8 hours under a nitrogen atmosphere; and a second suspension polymerization reaction step in which suspension polymerization is performed at a temperature range of 90 to 95°C for 4 to 6 hours after the above-mentioned first suspension polymerization reaction step is completed. The present invention provides a method for manufacturing polymer beads using a composition for manufacturing polymer beads, comprising: a filtration step for filtering the polymer synthesized by the above-mentioned second suspension polymerization reaction step; and a washing and drying step for washing and drying the polymer that has undergone the filtration step.

[0037] The composition for manufacturing polymer beads according to the present invention, specifically the composition for manufacturing polymer beads capable of controlling the refractive index, may be any conventional composition for manufacturing polymer beads in the art capable of controlling the refractive index of polymer beads produced by a polymerization reaction.

[0038] The composition for manufacturing polymer beads according to the present invention consists of a main component for producing polymer beads by polymerization and an auxiliary component added for the polymerization reaction.

[0039] The subject according to the present invention comprises, based on 100% by weight of the total subject, 25 to 75% by weight of methyl methacrylate, 20 to 60% by weight of styrene, 3 to 15% by weight of divinylbenzene, and 2 to 15% by weight of ethylene glycol dimethacrylate.

[0040] The auxiliary agent according to the present invention comprises 95 to 99 weight% of a dispersion medium and 1 to 5 weight% of polyvinyl alcohol, based on 100 weight% of the total auxiliary agent.

[0041] Methyl methacrylate (MMA) included in the subject matter according to the present invention is intended to provide excellent mechanical properties as a main resin and at the same time be manufactured into polymethyl methacrylate through a polymerization reaction.

[0042] The amount of methyl methacrylate used can be varied according to the user's choice, but it is preferably 25 to 75 weight percent based on 100 weight percent of the total subject matter.

[0043] The styrene according to the present invention is produced as polystyrene through a polymerization reaction, and can improve the refractive index of the polymer beads produced, so the refractive index can be controlled by mixing with the methyl methacrylate to form particles according to the ratio.

[0044] The amount of styrene used can be varied according to the user's choice, but it is recommended to use 20 to 60 weight percent based on 100 weight percent of the total material.

[0045] The polymer bead composition according to the present invention comprises a plurality of, for example, two, crosslinking agents, i.e., double crosslinking agents, to improve the difference in Bx degree of copolymerization.

[0046] Here, the present invention uses divinylbenzene as one of the double crosslinking agents and ethylene glycol dimethacrylate (EGDMA) as the other.

[0047] At this time, the above divinylbenzene is a crosslinking agent having vinyl groups, and ethylene glycol dimethacrylate is a crosslinking agent having acrylic groups.

[0048] In particular, when an azo-based initiator is used for styrene according to the present invention, the conversion rate decreases and the generation of unreacted monomer increases; however, the crosslinking agent divinylbenzene increases the reaction sites of styrene, thereby enabling an increase in the conversion rate.

[0049] The amount of crosslinking agent according to the present invention, specifically divinylbenzene and / or ethylene glycol dimethacrylate, may be changed according to the user's choice, but the divinylbenzene is preferably 3 to 15 weight% based on 100 weight% of the total main component, and the ethylene glycol dimethacrylate is preferably 2 to 15 weight% based on 100 weight% of the total main component.

[0050] In a specific embodiment, the subject according to the present invention may further include dodecanethiol as an additional crosslinking agent in addition to a crosslinking agent, specifically a double crosslinking agent, and in such case, it is preferable to include 1 to 5 weight percent based on 100 weight percent of the crosslinking agent in a range included in the total amount of crosslinking agent, e.g., divinylbenzene and / or ethylene glycol dimethacrylate.

[0051] The initiator according to the present invention is an initiator for copolymerization reactions, and any initiator commonly used in the industry for this purpose, such as azo-based initiator azobisisobutyronitrile (AIBN), may be used, and it is recommended to use it in a weight ratio of 1:0.001 to 0.1 relative to the total weight of the main component.

[0052] The dispersion medium included in the auxiliary material according to the present invention is intended to be mixed with the main material to disperse the composition and facilitate a polymerization reaction. Any conventional dispersion medium in the art having this purpose, such as water, purified water, ion-exchanged water, or at least one mixture selected from these, may be used, but it is recommended to use ion-exchanged water.

[0053] The amount of dispersion medium used can be changed according to the user's choice, but it is preferably 95 to 99 weight percent based on 100 weight percent of the total amount.

[0054] The polyvinyl alcohol included in the auxiliary agent according to the present invention is intended to improve the lightness and / or stiffness of polymer beads produced through a polymerization reaction, and any conventional polyvinyl alcohol in the art having this purpose, for example, polyvinyl alcohol with an Mw of about 10,000, may be used.

[0055] The amount of polyvinyl alcohol used is not particularly limited, but it is recommended to use 1 to 5 weight percent based on 100 weight percent of the total amount of the product.

[0056] The amounts of the main component, auxiliary component, and initiator constituting the polymer bead manufacturing composition according to the present invention having such a composition and specifically a polymer bead composition capable of controlling the refractive index may be changed according to the user's choice, but it is recommended that the main component, auxiliary component, and initiator be mixed in a weight ratio of 1:1 to 1.5:0.001 to 0.1.

[0057] Meanwhile, the composition for manufacturing polymer beads according to the present invention and the method for manufacturing polymer beads using the composition for manufacturing polymer beads capable of specifically controlling the refractive index are described as follows.

[0058] A method for manufacturing polymer beads using a composition for manufacturing polymer beads according to the present invention comprises a main component mixing step of mixing 25 to 75 weight% of methyl methacrylate, 20 to 60 weight% of styrene, 3 to 15 weight% of divinylbenzene, and 2 to 15 weight% of ethylene glycol dimethacrylate, based on 100 weight% of the total main component;

[0059] A main component and initiator mixing step in which an initiator is added to the mixture obtained after the above main component mixing step is completed, at a weight ratio of 1:0.001 to 0.1 relative to the total weight of the main component;

[0060] A component mixing step of mixing 95 to 99 weight% of a dispersion medium and 1 to 5 weight% of polyvinyl alcohol based on 100 weight% of the total component to dissolve the polyvinyl alcohol in the dispersion medium;

[0061] A premixing solution preparation step in which a mixture of auxiliary agents is mixed in a weight ratio of 1:1 to 1.5 relative to the total weight of the main agent to the mixture obtained after the above-mentioned main agent and initiator mixing step is completed, and then premixed by stirring at a speed of 850 to 950 rpm for 25 to 35 minutes;

[0062] An emulsion preparation step of preparing a homogenized emulsion by dispensing the premixing solution from the above premixing solution preparation step and stirring at a speed of 11,000 to 13,000 rpm for 5 to 15 minutes;

[0063] A first suspension polymerization reaction step in which the emulsion from the above emulsion preparation step is stirred under a nitrogen atmosphere at a speed of 150 to 250 rpm at a temperature range of 60 to 70°C for 6 to 8 hours to perform suspension polymerization;

[0064] A second suspension polymerization reaction step of suspending polymerization for 4 to 6 hours at a temperature range of 90 to 95℃ after the above first suspension polymerization reaction step is completed;

[0065] A filtration step for filtering the polymer synthesized by the above secondary suspension polymerization reaction step; and

[0066] It includes a washing and drying step in which the polymer that has undergone the above filtration step is washed and then dried.

[0068] The present invention will be described in detail below through examples. However, the following examples are solely for the purpose of specifically illustrating the present invention and do not limit the scope of the present invention.

[0070] [Example 1]

[0071] A main component was prepared by mixing 60% by weight of methyl methacrylate, 25% by weight of styrene, 10% by weight of divinylbenzene, and 5% by weight of ethylene glycol dimethacrylate, and a secondary component was prepared by mixing 98% by weight of ion-exchanged water and 2% by weight of polyvinyl alcohol. Then, a composition for manufacturing polymer beads was prepared by mixing the main component, the secondary component, and azobisisobutyronitrile as an initiator in a weight ratio of 1:1.02:0.002.

[0073] [Example 2]

[0074] A main component was prepared by mixing 75% by weight of methyl methacrylate, 10% by weight of styrene, 12% by weight of divinylbenzene, and 3% by weight of ethylene glycol dimethacrylate, and a secondary component was prepared by mixing 98% by weight of ion-exchanged water and 2% by weight of polyvinyl alcohol. Then, a composition for manufacturing polymer beads was prepared by mixing the main component, the secondary component, and azobisisobutyronitrile as an initiator in a weight ratio of 1:1.02:0.002.

[0076] [Example 3]

[0077] A main component was prepared by mixing 25% by weight of methyl methacrylate, 60% by weight of styrene, 5% by weight of divinylbenzene, and 10% by weight of ethylene glycol dimethacrylate, and a secondary component was prepared by mixing 98% by weight of ion-exchanged water and 2% by weight of polyvinyl alcohol. Then, a composition for manufacturing polymer beads was prepared by mixing the main component, the secondary component, and azobisisobutyronitrile as an initiator in a weight ratio of 1:1.02:0.002.

[0079] [Comparative Example 1]

[0080] A main component was prepared by mixing 60% by weight of methyl methacrylate, 25% by weight of styrene, and 15% by weight of ethylene glycol dimethacrylate, and an auxiliary component was prepared by mixing 98% by weight of ion-exchanged water and 2% by weight of polyvinyl alcohol. Then, a composition for manufacturing polymer beads was prepared by mixing the main component, the auxiliary component, and azobisisobutyronitrile as an initiator in a weight ratio of 1:1.02:0.002.

[0082] [Comparative Example 2]

[0083] A main component was prepared by mixing 75% by weight of methyl methacrylate, 10% by weight of styrene, and 15% by weight of divinylbenzene, and a secondary component was prepared by mixing 98% by weight of ion-exchanged water and 2% by weight of polyvinyl alcohol, and then a composition for manufacturing polymer beads was prepared by mixing the main component, the secondary component, and azobisisobutyronitrile as an initiator in a weight ratio of 1:1.02:0.002.

[0085] [Comparative Example 3]

[0086] A main component was prepared by mixing 10% by weight of methyl methacrylate, 75% by weight of styrene, 3% by weight of divinylbenzene, and 12% by weight of ethylene glycol dimethacrylate, and a secondary component was prepared by mixing 98% by weight of ion-exchanged water and 2% by weight of polyvinyl alcohol. Then, a composition for manufacturing polymer beads was prepared by mixing the main component, the secondary component, and azobisisobutyronitrile as an initiator in a weight ratio of 1:1.02:0.002.

[0088] [Comparative Example 4]

[0089] A main component was prepared using 100% by weight of methyl methacrylate, and a secondary component was prepared by mixing 98% by weight of ion-exchanged water and 2% by weight of polyvinyl alcohol. Then, a composition for manufacturing polymer beads was prepared by mixing the main component, the secondary component, and azobisisobutyronitrile as an initiator in a weight ratio of 1:1.02:0.002.

[0091] [Comparative Example 5]

[0092] A main component was prepared using 100% by weight of styrene, and a secondary component was prepared by mixing 98% by weight of ion-exchanged water and 2% by weight of polyvinyl alcohol. Then, a composition for manufacturing polymer beads was prepared by mixing the main component, the secondary component, and azobisisobutyronitrile as an initiator in a weight ratio of 1:1.02:0.002.

[0094] [experiment]

[0095] A premixing solution was prepared by premixing each polymer bead manufacturing composition prepared according to the examples and comparative examples by stirring at a speed of about 900 rpm for about 30 minutes.

[0096] Next, after dispensing the premixing solution, a homogenized emulsion was prepared by stirring at a speed of about 12,000 rpm for about 10 minutes.

[0097] Next, the above emulsion was subjected to a primary suspension polymerization reaction under a nitrogen atmosphere at a speed of approximately 200 rpm and a temperature of approximately 60°C for approximately 6 hours.

[0098] Next, the suspension from the first suspension polymerization reaction was subjected to a second suspension polymerization reaction at a temperature of about 90°C for about 4 hours.

[0099] Next, the polymer synthesized by the above secondary suspension polymerization reaction was filtered and washed with water and an aqueous solution of ethanol, and the washed filtrate was placed in a vacuum oven and dried for about 24 hours to produce spherical polymer beads.

[0100] Next, the results regarding the content, refractive index, yield (polymer conversion rate), SEM measurement, GC analysis, and color change of the polymer beads prepared according to the above examples and comparative examples are shown in Tables 1 and 2.

[0101] Here, the refractive index of the copolymer was calculated as [(methyl methacrylate weight% × refractive index of methyl methacrylate) + (styrene weight% × refractive index of styrene)].

[0102] In addition, the above SEM was COXEM CX30, and based on the judgment criteria, "good" was classified as "good" and "poor" depending on whether beads were formed after visually checking the image. The product yield was measured after hot air drying at a temperature of approximately 75°C for about 24 hours, the average particle size was measured using a Coulter Multisizer M3, and GC analysis was performed by analyzing unreacted monomers.

[0104] Refractive index by composition 1.49 1.51 1.56 1.454 　 composition Methyl methacrylate (%) Styrene (%) Divinylbenzene (%) Ethylene glycol dimethacrylate (%) Theoretical refractive index Example 1 60 25 10 5 1.5002 Example 2 75 10 12 3 1.49932 Example 3 25 60 5 10 1.5019 Comparative Example 1 60 25 - 15 1.4896 Comparative Example 2 75 10 15 　- 1.5025 Comparative Example 3 10 75 3 12 1.50278 Comparative Example 4 100 -　 -　 - 1.49 Comparative Example 5 - 100 - - 1.51

[0106] Yield (polymer conversion rate) SEM measurement GC Average particle size (㎛) Color change △b after maintaining 280 degrees for 20 minutes Example 1 92 Good 68ppm 25.5 0.8 Example 2 95 Good 42ppm 25 0.6 Example 3 90 Good 60pm 24.8 0.8 Comparative Example 1 75 Good 180ppm 23.6 5.2 Comparative Example 2 80 Good 168ppm 23.5 3.2 Comparative Example 3 88 Good 120ppm 25 - Comparative Example 4 72 error - 28 Failed to form a sphere Comparative Example 5 68 error - 29 Failed to form a sphere

[0108] As shown in Tables 1 and 2, the yield of the comparative examples was found to be lower compared to the examples, and in the case of Comparative Examples 4 and 5, which used only polymer resin without a crosslinking agent, the SEM measurement results were poor and did not form a spherical shape.

[0109] In addition, GC analysis of unreacted monomers revealed that the product with the least amount of unreacted monomers and the highest conversion rate showed the least color change, indicating that when heated, unreacted monomers carbonize first and have a significant effect on the color.

[0110] Accordingly, it was found that the content of general unreacted monomers is best at 100 ppm or less.

[0112] As explained above, those skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without altering its technical concept or essential features. Therefore, all embodiments described above should be understood as illustrative and not restrictive. The scope of the present invention should be interpreted as including all modified or altered forms derived from the meaning and scope of the claims set forth below and their equivalents, rather than from the detailed description above.

Claims

Claim 1 A composition for manufacturing polymer beads comprising, based on 100% by weight of the total main component, 25 to 75% by weight of methyl methacrylate, 20 to 60% by weight of styrene, 3 to 15% by weight of divinylbenzene, and 2 to 15% by weight of ethylene glycol dimethacrylate; based on 100% by weight of the total auxiliary component, 95 to 99% by weight of a dispersion medium and 1 to 5% by weight of polyvinyl alcohol; and an initiator, wherein the main component, auxiliary component, and initiator are mixed in a weight ratio of 1:1 to 1.5:0.001 to 0.

1. Claim 2 A composition for manufacturing polymer beads according to claim 1, wherein the initiator is azobisisobutyronitrile. Claim 3 A composition for manufacturing polymer beads according to claim 1, wherein the dispersion medium comprises water, purified water, ion-exchanged water, or at least one mixture selected from these. Claim 4 A main component mixing step of mixing 25 to 75 weight% of methyl methacrylate, 20 to 60 weight% of styrene, 3 to 15 weight% of divinylbenzene, and 2 to 15 weight% of ethylene glycol dimethacrylate, based on 100 weight% of the total main component; a main component and initiator mixing step of adding and mixing an initiator to the mixture obtained after the main component mixing step at a weight ratio of 1:0.001 to 0.1 relative to the total weight of the main component; an auxiliary component mixing step of mixing 95 to 99 weight% of a dispersion medium and 1 to 5 weight% of polyvinyl alcohol, based on 100 weight% of the total auxiliary component, to dissolve the polyvinyl alcohol in the dispersion medium; and a premixing step of mixing an auxiliary component mixture to the mixture obtained after the main component and initiator mixing step at a weight ratio of 1:1 to 1.5 relative to the total weight of the main component, followed by stirring at a speed of 850 to 950 rpm for 25 to 35 minutes. A method for manufacturing polymer beads using a composition for manufacturing polymer beads, comprising: a premixing solution preparation step; an emulsion preparation step of preparing a homogenized emulsion by stirring at a speed of 11,000 to 13,000 rpm for 5 to 15 minutes after dispensing the premixing solution from the premixing solution preparation step; a first suspension polymerization reaction step of performing suspension polymerization by stirring the emulsion from the emulsion preparation step at a speed of 150 to 250 rpm at a temperature range of 60 to 70°C for 6 to 8 hours under a nitrogen atmosphere; a second suspension polymerization reaction step of performing suspension polymerization at a temperature range of 90 to 95°C for 4 to 6 hours after the first suspension polymerization reaction step is completed; a filtration step of filtering the polymer synthesized by the second suspension polymerization reaction step; and a washing and drying step of washing and drying the polymer that has undergone the filtration step.

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