Antifouling acrylic adhesive tape and preparation method thereof

Abstract

The invention relates to an antifouling acrylic adhesive tape and a preparation method thereof, and belongs to the technical field of adhesive tapes. The antifouling acrylic adhesive tape comprises a base material layer, a release layer arranged on the base material layer and an adhesive layer arranged between the base material layer and the release layer, the adhesive layer is formed by coating the base material layer with an adhesive solution and drying the adhesive solution, and the adhesive solution comprises the following components in parts by mass: 10-30 parts of acrylic acid, 10-30 parts of a curing agent, 10-30 parts of a curing agent and 10-30 parts of a curing agent. 20 to 50 parts of linear acrylic resin, 20 to 50 parts of star-shaped acrylic resin, 10 to 40 parts of tackifying resin and 50 to 200 parts of solvent; the Tg of the linear acrylic resin is-60 DEG C to-30 DEG C, and the weight-average molecular weight of the linear acrylic resin is 400,000-600,000; the Tg of the star-shaped acrylic resin is-20 DEG C to-10 DEG C, and the weight-average molecular weight of the branched chain is 100,000-200,000. The antifouling acrylic adhesive tape has good fitness, chemical corrosion resistance, insulativity and no pollution, and is suitable for the fields of lens production and the like with no pollution requirement on the adhesive tape.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of adhesive tape, and particularly relates to a pollution-resistant acrylic adhesive tape and a preparation method thereof. BACKGROUND

[0002] With the continuous progress of material science, precision manufacturing and optical design, modern lenses have broken through the limitations of single glass material, forming a diversified material system including resin, polycarbonate, high refractive plastic and the like.

[0003] In the lens production process, first, a pair of molds is placed at a predetermined distance, then a sealing tape is pasted along the entire outer periphery of the mold, and then liquid resin is injected into the space formed by the mold and the sealing tape. Next, the lens resin needs to be cured for a long time in a high temperature environment, but in this process, the small molecule linear chains in the acrylic glue will diffuse into the interior of the resin that has not completely cured, eventually causing the lens to appear whitish. To solve this problem, patent US 20220195257 proposes a solution: by synthesizing 100 W linear chains to constrain small molecule diffusion, the essence is to increase the entanglement degree of linear chains; however, the high molecular weight in this scheme will adversely affect the implementation of the glue coating process.

[0004] Therefore, it is necessary to develop a pollution-resistant sealing tape to solve the problem of lens peripheral whitening caused by small molecule diffusion under high temperature conditions. SUMMARY

[0005] To solve the above technical problems, the present application provides a pollution-resistant acrylic adhesive tape and a preparation method thereof. The pollution-resistant acrylic adhesive tape has good conformability, chemical corrosion resistance, insulation and non-pollution, and is suitable for lens production and other fields that do not require pollution of the adhesive tape.

[0006] The first object of the present application is to provide a pollution-resistant acrylic adhesive tape, comprising a substrate layer, a release layer disposed on the substrate layer, and an adhesive layer disposed between the substrate layer and the release layer, the adhesive layer is formed by coating an adhesive solution on the substrate layer and drying, the adhesive solution comprises, by mass fraction; linear acrylic resin 20-50 parts, star-shaped acrylic resin 20-50 parts, tackifying resin 10-40 parts and solvent 50-200 parts. The Tg of the linear acrylic resin is -60℃ to -30℃, for example, can be -60℃, -59℃, -58℃, -57℃, -56℃, -55℃, -54℃, -53℃, -52℃, -51℃, -50℃, -49℃, -48℃, -47℃, -46℃, -45℃, -44℃, -43℃, -42℃, -41℃, -40℃, -39℃, -38℃, -37℃, -36℃, -35℃, -34℃, -33℃, -32℃, -31℃, -30℃, etc.; the weight average molecular weight is 400,000-600,000, for example, can be 400,000, 410,000, 420,000, 430,000, 440,000, 450,000, 460,000, 470,000, 480,000, 490,000, 500,000, 510,000, 520,000, 530,000, 540,000, 550,000, 560,000, 570,000, 580,000, 590,000, 600,000, etc.; The Tg of the star-shaped acrylic resin is -20℃ to -10℃, for example, can be -20℃, -19℃, -18℃, -17℃, -16℃, -15℃, -14℃, -13℃, -12℃, -11℃, -10℃, etc.; the branched weight average molecular weight is 1,000,000-2,000,000, for example, can be 1,000,000, 1,100,000, 1,200,000, 1,300,000, 1,400,000, 1,500,000, 1,600,000, 1,700,000, 1,800,000, 1,900,000, 2,000,000, etc.

[0007] Further, the mass fraction of the linear acrylic resin is 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, etc.; The mass fraction of the star-shaped acrylic resin is 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, etc.; The mass fraction of the tackifying resin is 10 parts, 15 parts, 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, etc.; The mass fraction of the solvent is 50 parts, 60 parts, 70 parts, 80 parts, 90 parts, 100 parts, 110 parts, 120 parts, 130 parts, 140 parts, 150 parts, 160 parts, 170 parts, 180 parts, 190 parts, 200 parts, etc.; In an embodiment of the present application, the preparation of the star-shaped acrylic resin comprises the following steps: 40-50 parts of monomers, 0.1-0.2 parts of basic inhibitors, 0.005-0.01 parts of Raft reagents, and 60-80 parts of organic solvents are uniformly mixed, then 0.005-0.01 parts of thermal initiators are added, and 3-5 times of freeze-vacuum cycle treatment is carried out; under anhydrous and anaerobic conditions, polymerization is carried out at 65℃-75℃ for 8 h-12 h to obtain the star-shaped acrylic resin.

[0008] In an embodiment of the present application, the monomers include 2-ethylhexyl acrylate, styrene, 2-hydroxyethyl acrylate, acrylic acid and glycidyl methacrylate; the mass parts of the monomers are 40 parts, 41 parts, 42 parts, 43 parts, 44 parts, 45 parts, 46 parts, 47 parts, 48 parts, 49 parts, 50 parts, etc. The basic inhibitor is selected from triethylamine and / or diisopropyl ethylamine; preferably, the basic inhibitor is triethylamine; the mass parts of the basic inhibitor are 0.11 parts, 0.12 parts, 0.13 parts, 0.14 parts, 0.15 parts, 0.16 parts, 0.17 parts, 0.18 parts, 0.19 parts, 0.2 parts, etc. The Raft agent is selected from benzene-1,2,4,5-benzene tetrayl(methylene) tetrabutyl (trithiocarbonate) and / or benzene-1,2,4,5-tetrakis(methylene) tetrabutyl tetrakis(trithiocarbonate); preferably, the Raft agent is benzene-1,2,4,5-benzene tetrayl(methylene) tetrabutyl (trithiocarbonate); the mass parts of the Raft agent are 0.005 parts, 0.006 parts, 0.007 parts, 0.008 parts, 0.009 parts, 0.01 parts, etc. The organic solvent is selected from one or more of toluene, butyl acetate and butanone; preferably, the organic solvent is toluene; the mass parts of the organic solvent are 60 parts, 61 parts, 62 parts, 63 parts, 64 parts, 65 parts, 66 parts, 67 parts, 68 parts, 69 parts, 70 parts, 71 parts, 72 parts, 73 parts, 74 parts, 75 parts, 76 parts, 77 parts, 78 parts, 79 parts, 80 parts, etc. The thermal initiator is selected from azobis isobutyl and / or dibenzoyl peroxide; preferably, the thermal initiator is azobis isobutyl; the mass parts of the thermal initiator are 0.005 parts, 0.006 parts, 0.007 parts, 0.008 parts, 0.009 parts, 0.01 parts, etc.

[0009] Further, the preparation of the star-shaped acrylic resin includes the following steps: 15 parts of 2-ethylhexyl acrylate, 2 parts of styrene, 20 parts of 2-hydroxyethyl acrylate, 3 parts of acrylic acid, 5 parts of glycidyl methacrylate, 0.15 parts of basic inhibitor triethylamine, 0.008 parts of Raft agent benzene-1,2,4,5-benzene tetrayl(methylene) tetrabutyl (trithiocarbonate) are uniformly mixed with 70 parts of organic solvent toluene, followed by the addition of 0.008 parts of thermal initiator azobis isobutyl, and 3 times of freeze-vacuum cycle treatment; under anhydrous and anaerobic conditions, polymerization is carried out at 70 ℃ for 10 h to obtain a star-shaped acrylic resin with a Tg of about -10 ℃ and a branched weight average molecular weight of about 150,000.

[0010] In an embodiment of the present application, the preparation of the linear acrylic resin includes the following steps: Mix 35-45 parts of acrylate monomer, 0.005-0.01 parts of Raft reagent and 40-50 parts of organic solvent uniformly, then add 0.005-0.01 parts of thermal initiator, and perform 3-5 times of freeze-vacuum cycle treatment; under anhydrous and anaerobic conditions, polymerize for 8-12 hours at 65-75℃ to obtain the linear acrylic resin.

[0011] In an embodiment of the present application, the acrylate monomer comprises 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, styrene and acrylic acid; the mass fraction of the acrylate monomer is 35 parts, 36 parts, 37 parts, 38 parts, 39 parts, 40 parts, 41 parts, 42 parts, 43 parts, 44 parts, 45 parts, etc. The Raft reagent is selected from 4-cyano-4-(thiobenzoyl valeric acid) and / or 2-cyano-2-propyl benzodithiole; preferably, the Raft reagent is 4-cyano-4-(thiobenzoyl valeric acid); the mass fraction of the Raft reagent is 0.005 parts, 0.006 parts, 0.007 parts, 0.008 parts, 0.009 parts, 0.01 parts, etc. The organic solvent is selected from one or more of toluene, butyl acetate and butanone; preferably, the organic solvent is toluene; the mass fraction of the organic solvent is 40 parts, 41 parts, 42 parts, 43 parts, 44 parts, 45 parts, 46 parts, 47 parts, 48 parts, 49 parts, 50 parts, etc. The thermal initiator is selected from azobis isobutyl and / or dibenzoyl peroxide; preferably, the thermal initiator is azobis isobutyl; the mass fraction of the thermal initiator is 0.005 parts, 0.006 parts, 0.007 parts, 0.008 parts, 0.009 parts, 0.01 parts, etc.

[0012] Further, the preparation of the linear acrylic resin comprises the following steps: mixing 20 parts of 2-ethylhexyl acrylate, 15 parts of 2-hydroxyethyl acrylate, 2 parts of styrene, 3 parts of acrylic acid, 0.008 parts of Raft reagent 4-cyano-4-(thiobenzoyl valeric acid) and 45 parts of organic solvent toluene uniformly, then adding 0.008 parts of thermal initiator azobis isobutyl, and performing 3 times of freeze-vacuum cycle treatment; under anhydrous and anaerobic conditions, polymerizing for 10 hours at 70℃ to obtain a linear acrylic resin with a Tg of about -30℃ and a weight average molecular weight of about 500,000.

[0013] In an embodiment of the present application, the tackifying resin is a rosin-based tackifying resin.

[0014] In an embodiment of the present application, the solvent is selected from one or more of toluene, butyl acetate and butanone; preferably, the solvent is toluene.

[0015] In one embodiment of the present application, the material of the substrate layer is selected from one or more of a polyester film, a polyimide film and a polyolefin polymer film; The material of the release layer is selected from one or more of a silicone release agent, a fluorine release agent and a non-silicone release agent.

[0016] In one embodiment of the present application, the thickness of the substrate layer is 5 μm-100 μm, for example, it can be 5 μm, 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, etc. The thickness of the adhesive layer is 15 μm-50 μm, for example, it can be 15 μm, 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, etc. The thickness of the release layer is 5 μm-100 μm, for example, it can be 5 μm, 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, etc.

[0017] A second object of the present application is to provide a preparation method of the anti-fouling type acrylic adhesive tape, comprising the following steps: S1, stirring linear acrylic resin, star-shaped acrylic resin, tackifying resin and solvent uniformly to obtain an adhesive solution; S2, coating the adhesive solution of S1 on the surface of the substrate layer, drying to form an adhesive layer; laminating a release layer on the surface of the adhesive layer to obtain the anti-fouling type acrylic adhesive tape.

[0018] The technical solution of the present application has the following advantages compared with the prior art: The anti-fouling type acrylic adhesive tape of the present application compounding linear acrylic resin and star-shaped acrylic resin in a certain proportion, wherein the linear acrylic resin can give the adhesive solution good flexibility, so that it can be closely laminated with the laminated object; the star-shaped acrylic resin can limit the diffusion of small molecules by virtue of the rigidity and close arrangement of the chain segments, so as to realize the adhesive solution with good lamination and small molecule diffusion inhibition effect.

[0019] The star-shaped polymer in the anti-fouling type acrylic adhesive tape of the present application contains reactive groups (such as acrylic acid, glycidyl methacrylate, etc.), which can cause the system to collapse at high temperature, and the chain segments of the linear acrylic resin form physical crosslinking points through the collapsed star-shaped polymer; under the synergistic effect of physical and chemical networks, the system enters the viscous flow state at a higher temperature or for a longer time, thereby greatly limiting the diffusion of small molecules and eliminating the phenomenon of residual glue. DETAILED DESCRIPTION

[0020] The present application will be further described with reference to the following specific examples, which are intended to be illustrative of the application and not limiting thereof.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0022] In the present application, unless otherwise specified, the "parts" in the examples are all weight parts.

[0023] In the present application, unless otherwise specified, the tackifying resin used in the examples is a rosin-based tackifying resin of Bonsen Resin, model BZ-720.

[0024] In the present application, unless otherwise specified, the substrate layer used in the examples is a PET film, with a thickness of 50 μm.

[0025] In the present application, unless otherwise specified, the release layer used in the examples is a silicone release agent, purchased from Dow Corning, model Dow Corning 7485, with a thickness of 25 μm. Example 1

[0026] The anti-fouling type acrylic adhesive tape of the present embodiment comprises a substrate layer, a release layer disposed on the substrate layer, and an adhesive layer (with a thickness of 30 μm) disposed between the substrate layer and the release layer, which is formed by coating an adhesive solution on the substrate layer and drying it, The adhesive solution comprises, in parts by mass; linear acrylic resin 50 parts, star-shaped acrylic resin 30 parts, tackifying resin 10 parts, and solvent toluene 60 parts; The preparation of the star-shaped acrylic resin comprises the following steps: 15 parts of 2-ethylhexyl acrylate, 2 parts of styrene, 20 parts of 2-hydroxyethyl acrylate, 3 parts of acrylic acid, 5 parts of glycidyl methacrylate, 0.15 parts of basic inhibitor triethylamine, 0.008 parts of Raft reagent benzene-1, 2, 4, 5-benzene tetrayl (methylene) tetrabutyl (trithiocarbonate) are uniformly mixed with 70 parts of organic solvent toluene, followed by the addition of 0.008 parts of thermal initiator azobisdimethyl isobutyl, and 3 times of freeze-vacuum cycle treatment; under anhydrous and anaerobic conditions, polymerization is carried out at 70 ℃ for 10 h to obtain a star-shaped acrylic resin with a Tg of about -10 ℃ and a branched weight average molecular weight of about 150,000.

[0027] The preparation of the linear acrylic resin comprises the following steps: 20 parts of 2-ethylhexyl acrylate, 15 parts of 2-hydroxyethyl acrylate, 2 parts of styrene, 3 parts of acrylic acid, 0.008 parts of Raft reagent 4-cyano-4-(thiobenzoyl valeric acid) are uniformly mixed with 45 parts of organic solvent toluene, and then 0.008 parts of thermal initiator azobis isobutyl nitrite is added, and 3 times of freeze-vacuum cycle treatment is carried out; under the conditions of anhydrous and anaerobic, polymerization is carried out at 70 ℃ for 10 h, to obtain a linear acrylic resin with a Tg of about -30 ℃ and a weight average molecular weight of about 500,000; The preparation of the above-mentioned anti-fouling type acrylic adhesive tape specifically comprises the following steps: S1, linear acrylic resin, star-shaped acrylic resin, tackifying resin and solvent are added in a stirred tank, and after high-speed stirring for 60 min, a fully dispersed adhesive solution is obtained; S2, the adhesive solution is coated on the surface of the substrate layer, and the adhesive layer is formed by drying; the release layer is attached to the surface of the adhesive layer, and the anti-fouling type acrylic adhesive tape is obtained by winding. Comparative Example 1

[0028] The same as Example 1, except that the Tg of the star-shaped acrylic resin is about 0 ℃. Comparative Example 2

[0029] The same as Example 1, except that the mass fraction of the star-shaped acrylic resin is 0 parts. Comparative Example 3

[0030] The same as Example 1, except that the mass fraction of the star-shaped acrylic resin is 60 parts. Comparative Example 4

[0031] The same as Example 1, except that no glycidyl methacrylate is added in the preparation process of the star-shaped acrylic resin. Test Example 1

[0032] The normal temperature 180° peeling force, whether there is residual glue, glue overflow and other phenomena of the anti-fouling type acrylic adhesive tape of Example 1 and Comparative Examples 1-4 are tested: (1) Normal temperature 180° peeling strength: according to GB / T 2792-1998, electronic tensile testing machine, take a sample with a width of 25 mm, and paste it on a SUS steel plate with a 2 kg roller at a speed of 300 mm / min and roll back and forth three times, and then stand still for 20 min at normal temperature, and then test at a tensile speed of 300 mm / min and a test distance of 150 mm. (2) Loop tack: refer to GB / T 4852-2002, ball ramp test method, take a sample with a width of 25 mm and a length of 17.5 mm, test at a 30° inclination angle and a tensile speed of 300 mm / min, and record the maximum value; (3) High-temperature residual glue: take a sample with a width of 25 mm, heat it at 50 ℃ for 2 h, then heat it at 100 ℃ for 4 h, and then tear off the sample to observe whether there is residual glue; (4) Whether the lens periphery is whitened during high-temperature curing: take a sample with a width of 25 mm, seal it outside the lens glass mold of the injection liquid resin, and after the sample is formed, irradiate it with light to determine whether it is whitened and fogged; Table 1 shows the finally measured parameters of the materials: Table 1

[0033] As can be seen from Table 1, the antifouling acrylic adhesive tape of the embodiment has a room temperature peeling force of 7.28 N / 25 mm, a loop tack of 15.45 N / 25 mm, no residual glue after high temperature, and no whitening and fogging of the lens, and has excellent comprehensive performance. This is because the linear acrylic resin and the star-shaped acrylic resin are compounded in a certain proportion, the low-Tg linear acrylic resin can maintain good tack performance and ensure that the antifouling acrylic adhesive tape is closely attached to the attached object; the star-shaped acrylic resin exhibits excellent small molecule diffusion inhibition effect due to its chemical and physical properties, avoiding lens whitening and fogging. The combination of the two and the chemical cross-linking collapse can realize the coexistence of flexibility and small molecule diffusion restriction performance, so that the antifouling acrylic adhesive tape has good conformability, chemical corrosion resistance, insulation and non-pollution, and is suitable for lens production and other fields that require no type pollution of adhesive tape.

[0034] As can be seen from the comparison between Comparative Example 1 and Comparative Example 1, the room temperature peeling force (6.22 N / 25 mm) and the loop tack (4.46 N / 25 mm) of Comparative Example 1 are lower than those of Example 1, and only the residual glue after high temperature and the lens without whitening and fogging. This is because the Tg of the star-shaped acrylic resin in Comparative Example 1 is about 0 ℃, which is higher than -10 ℃ of Example 1, and the high Tg leads to increased rigidity of the star-shaped acrylic resin segment, insufficient flexibility of the adhesive tape, and reduced close attachment of the adhesive tape to the attached object, thereby reducing the peeling force and tack performance, but the star-shaped acrylic resin still plays a role in limiting the diffusion of small molecules, so there is no residual glue and lens fogging.

[0035] Comparative Example 1 and Comparative Example 2 can be seen that the peel force at room temperature (17.94 N / 25 mm), the loop tack (24.45 N / 25 mm) of Comparative Example 2 is much higher than that of Example 1, and there is residual glue after high temperature, and the lens is white and misty. This is because Comparative Example 2 does not add star-shaped acrylic resin, but only relies on linear acrylic resin. Although linear acrylic resin can provide higher adhesion, the system lacks the physical and chemical crosslinking network formed by the star-shaped acrylic resin, and the cohesive strength is insufficient. The small molecule linear chain is easy to diffuse into the interior of the resin which is not completely cured under high temperature, resulting in lens whitening. At the same time, the adhesive tape has too strong adhesion and insufficient cohesion, and residual glue appears after high temperature.

[0036] Comparative Example 1 and Comparative Example 3 can be seen that the peel force at room temperature (2.23 N / 25 mm), the loop tack (1.66 N / 25 mm) is much lower than that of Example 1, and there is no residual glue after high temperature, and the lens is white and misty. This is because the mass fraction of star-shaped acrylic resin in Comparative Example 3 is 60 parts, which is much higher than 30 parts in Example 1. Too much star-shaped acrylic resin makes the crosslinking point density in the system too high, and the cohesive strength is too high, so the adhesion of the adhesive tape is greatly reduced, and it is difficult to effectively adhere to the adherend. Therefore, the peel force and tack performance are very poor, but a large amount of star-shaped acrylic resin can effectively limit the diffusion of small molecules, so there is no residual glue and lens mist phenomenon.

[0037] Comparative Example 1 and Comparative Example 4 can be seen that the peel force at room temperature (10.66 N / 25 mm) is higher than that of Example 1, and the loop tack (12.54 N / 25 mm) is lower than that of Example 1. And there is residual glue after high temperature, and the lens is white and misty. This is because glycidyl methacrylate is not added in the preparation process of star-shaped acrylic resin in Comparative Example 4, resulting in lack of reactive groups in star-shaped acrylic resin. Under high temperature, chemical crosslinking collapse structure cannot be formed, and only a small amount of physical action can be relied on. The cohesive strength of the system is insufficient, and the lens is white due to the diffusion of small molecules. At the same time, insufficient cohesion leads to residual glue after high temperature; the adhesion of linear acrylic resin is not significantly affected, and even without the moderate regulation of chemical crosslinking, the peel force is slightly increased, and the tack is slightly decreased due to the imbalance of the overall performance of the system.

[0038] Obviously, the above examples are only examples for the purpose of clear illustration, and are not limitations on the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. It is not necessary or possible to exhaust all embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. An antifouling type acrylic adhesive tape comprising a base material layer, a release layer provided on the base material layer, and an adhesive layer provided between the base material layer and the release layer, the adhesive layer being formed by drying an adhesive solution applied to the base material layer, characterized in that, The adhesive solution comprises, in parts by mass; linear acrylic resin 20-50 parts, star-shaped acrylic resin 20-50 parts, tackifying resin 10-40 parts and solvent 50-200 parts; The linear acrylic resin has a Tg of -60 ℃ to -30 ℃ and a weight average molecular weight of 400,000-600,000; The star-shaped acrylic resin has a Tg of -20 ℃ to -10 ℃ and a branched weight average molecular weight of 1,000,000-2,000,000.

2. The anti-staining type acrylic adhesive tape according to claim 1, characterized by, The preparation of the star-shaped acrylic resin comprises the following steps: 40-50 parts of monomers, 0.1-0.2 parts of basic inhibitor, 0.005-0.01 parts of Raft reagent and 60-80 parts of organic solvent are mixed uniformly, then 0.005-0.01 parts of thermal initiator is added, 3-5 times of freeze-vacuum cycle treatment is carried out; under anhydrous and anaerobic conditions, polymerization is carried out at 65 ℃-75 ℃ for 8 h-12 h to obtain the star-shaped acrylic resin.

3. The anti-staining type acrylic adhesive tape according to claim 2, characterized by, The monomers comprise 2-ethylhexyl acrylate, styrene, 2-hydroxyethyl acrylate, acrylic acid and glycidyl methacrylate; The basic inhibitor is selected from triethylamine and / or diisopropyl ethylamine; The Raft reagent is selected from benzene-1,2,4,5-benzene tetrayl(methylene) tetrabutyl (trithiocarbonate) and / or benzene-1,2,4,5-tetrakis(methylene) tetrabutyl tetrakis(trithiocarbonate); The organic solvent is selected from one or more of toluene, butyl acetate and butanone; The thermal initiator is selected from azobis isobutyl and / or dibenzoyl peroxide.

4. The anti-staining type acrylic adhesive tape according to claim 1, wherein The preparation of the linear acrylic resin comprises the following steps: 35-45 parts of acrylic ester monomers, 0.005-0.01 parts of Raft reagent and 40-50 parts of organic solvent are mixed uniformly, then 0.005-0.01 parts of thermal initiator is added, 3-5 times of freeze-vacuum cycle treatment is carried out; under anhydrous and anaerobic conditions, polymerization is carried out at 65 ℃-75 ℃ for 8 h-12 h to obtain the linear acrylic resin.

5. The anti-staining type acrylic adhesive tape according to claim 4, characterized by, The acrylic ester monomers comprise 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, styrene and acrylic acid; The Raft reagent is selected from 4-cyano-4-(thiobenzoyl valeric acid) and / or 2-cyano-2-propyl benzene di-sulfur; The organic solvent is selected from one or more of toluene, butyl acetate and butanone; The thermal initiator is selected from azobis isobutyl and / or dibenzoyl peroxide.

6. The anti-staining type acrylic adhesive tape according to claim 1, wherein The tackifying resin is a rosin-based tackifying resin.

7. The anti-staining type acrylic adhesive tape according to claim 1, wherein The solvent is selected from one or more of toluene, butyl acetate and butanone.

8. The anti-staining type acrylic adhesive tape according to claim 1, wherein The material of the substrate layer is selected from one or more of polyester film, polyimide film and polyolefin polymer film; The material of the release layer is selected from one or more of silicone release agent, fluorine release agent and non-silicon release agent.

9. The anti-staining type acrylic adhesive tape according to claim 1, wherein The thickness of the substrate layer is 5 μm-100 μm; The thickness of the adhesive layer is 15 μm-50 μm; The thickness of the release layer is 5 μm-100 μm.

10. The method of producing the anti-fouling acrylic adhesive tape according to any one of claims 1 to 9, wherein The method comprises the following steps: S1, linear acrylic resin, star-shaped acrylic resin, tackifying resin and solvent are stirred uniformly to obtain an adhesive solution; S2, coating the adhesive solution in S1 on the surface of the substrate layer, drying to form an adhesive layer; laminating a release layer on the surface of the adhesive layer to obtain the anti-fouling acrylic adhesive tape.

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