Uv adhesion reducing glue and its preparation method and application

Abstract

The present application relates to the technical field of adhesive, in particular to a kind of UV tack-reducing glue and its preparation method and application.The UV tack-reducing glue includes: acrylate adhesive, photoinitiator and curing agent;Wherein, the acrylate adhesive is prepared by acrylate polymer and functional monomer in the presence of catalyst and first solvent.The UV tack-reducing glue in the present application has excellent peelability after UV irradiation while maintaining high initial bonding strength and excellent water resistance.

Description

Technical Field

[0001] This invention relates to the field of adhesive technology, specifically to a UV-resistant adhesive, its preparation method, and its application. Background Technology

[0002] In the semiconductor manufacturing, advanced packaging, and precision cutting industries, the cutting process of precision components such as wafers, UTG glass, and PCBs / FPCs requires the use of adhesive tape or glue to temporarily fix and protect the workpieces.

[0003] Existing technologies mainly use the following two types of materials for temporary fixation and protection of workpieces: (1) Traditional pressure-sensitive tapes / adhesives, but these materials maintain high adhesion in both normal and peel conditions. Their peel force is difficult to control precisely, and forced peeling can easily cause hidden cracks or direct breakage to brittle substrates such as ultrathin wafers; (2) UV-induced tack reduction adhesives: The principle is to induce a cross-linking reaction through UV, which increases the cohesive force of the adhesive layer and causes volume shrinkage, thereby reducing the adhesion to the substrate. However, existing technologies generally have the problem of balancing key properties such as initial bond strength, peel force after tack reduction, water resistance and tack reduction rate. Summary of the Invention

[0004] To facilitate a clearer understanding of the technical solutions and effects of this invention, the invention will be described in detail below with reference to specific embodiments. Unless otherwise specified, 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 invention pertains. In case of any conflict, the definitions in this specification shall prevail.

[0005] Unless otherwise specified, "room temperature" in this invention refers to 20-30℃.

[0006] The first aspect of this invention provides a UV-resistant adhesive, the UV-resistant adhesive comprising: an acrylic adhesive, a photoinitiator, and a curing agent; The acrylate adhesive is prepared by acrylate polymers and functional monomers in the presence of a catalyst and a first solvent.

[0007] Preferably, the weight ratio of the acrylate polymer to the functional monomer is 1:(0.05-0.2), more preferably 1:(0.1-0.12).

[0008] Preferably, the catalyst has a weight of 0.01%-0.05% of the mass of the acrylate polymer.

[0009] Preferably, the weight of the first solvent is 6-10 times the weight of the functional monomer.

[0010] Preferably, the acrylate polymer comprises soft monomer structural units provided by soft monomers, hard monomer structural units provided by hard monomers, hydroxyl-containing monomer structural units provided by hydroxyl-containing monomers, and 2-acrylamide-2-methylpropanesulfonic acid structural units provided by 2-acrylamide-2-methylpropanesulfonic acid.

[0011] In this invention, it was discovered that the synergistic effect of soft monomer structural units, hard monomer structural units, hydroxyl-containing monomer structural units, and 2-acrylamido-2-methylpropanesulfonic acid structural units can enhance the adhesion, bonding strength, and stability of UV-resistant adhesives. This is presumably because the soft monomers act as a continuous, flexible matrix, providing the necessary chain segment mobility to wet, spread, and generate initial tack on rough surfaces. The hard monomers, acting as dispersed "rigid nodes," enhance the cohesive strength and creep resistance of the adhesive by limiting excessive chain segment slippage, preventing cohesive failure under stress. The hydroxyl-containing monomers allow the active hydroxyl groups to chemically react with the subsequent isocyanate curing agent, resulting in a robust network structure. More importantly, the highly polar sulfonic acid groups in 2-acrylamido-2-methylpropanesulfonic acid interact strongly with the surface of substrates such as metals through ionic and hydrogen bonds, forming a tight interface layer that is difficult for water to destroy, significantly enhancing interfacial adhesion and moisture resistance. In other words, the combination of these four structural units enables UV-resistant adhesives to have high initial strength, water resistance and controllable peelability.

[0012] Preferably, the weight ratio of the soft monomer structural unit, the hard monomer structural unit, the hydroxyl-containing monomer structural unit and the 2-acrylamide-2-methylpropanesulfonic acid structural unit is 100:(2~10):(10~20):(1~5), more preferably 100:(5~6):(12~15):(2~3).

[0013] In this invention, by controlling the content of soft monomer structural units, hard monomer structural units, hydroxyl-containing monomer structural units and 2-acrylamide-2-methylpropanesulfonic acid structural units within the above-mentioned range, the colloid can maintain excellent flexibility and initial tack while also having sufficient cohesive strength, high density of crosslinking sites and stable interfacial adhesion, thereby better achieving a balance between high-strength adhesion and controllable UV peeling.

[0014] In this invention, the weight ratio of each of the above structural units is based on the weight ratio of the corresponding individual units.

[0015] Preferably, the soft monomer includes at least one of methyl acrylate, ethyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate, isobutyl acrylate and isooctyl acrylate, and more preferably isobutyl acrylate and / or isooctyl acrylate.

[0016] Preferably, the hard monomer includes at least one of methyl acrylate, methyl methacrylate, ethyl methacrylate, acrylamide, styrene, isobornyl methacrylate, and cyclohexyl methacrylate, with acrylamide being the most preferred.

[0017] Preferably, the hydroxyl-containing monomer includes at least one of hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxybutyl acrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, and ethyl acetoacetate methacrylate.

[0018] More preferably, the hydroxyl-containing monomer is hydroxyethyl acrylate and ethyl acetoacetate methacrylate, and the weight ratio of hydroxyethyl acrylate to ethyl acetoacetate methacrylate is preferably 1:(0.1-1), for example 1:0.1, 1:0.2, 1:0.3, 1:0.4, 1:0.5, 1:0.6, 1:0.7, 1:0.8, 1:0.9, or 1:1.

[0019] Preferably, the method for preparing the acrylate polymer includes: in the presence of a second solvent and an initiator, a soft monomer, a hard monomer, a hydroxyl-containing monomer and 2-acrylamide-2-methylpropanesulfonic acid undergo a polymerization reaction to obtain the acrylate polymer.

[0020] Preferably, the second solvent includes at least one of propylene glycol methyl ether, propylene glycol methyl ether acetate, ethyl acetate, and butyl acetate.

[0021] More preferably, the second solvent is propylene glycol methyl ether acetate and ethyl acetate in a weight ratio of 1:(0.2-0.35).

[0022] Preferably, the weight of the second solvent is 60%-70% of the total weight of the soft monomer, hard monomer, hydroxyl-containing monomer and 2-acrylamide-2-methylpropanesulfonic acid.

[0023] Preferably, the initiator is selected from azobisisobutyronitrile and / or benzoyl peroxide, and more preferably azobisisobutyronitrile.

[0024] Preferably, the initiator is 0.5%-1.5% of the total weight of the soft monomer, hard monomer, hydroxyl-containing monomer and 2-acrylamide-2-methylpropanesulfonic acid.

[0025] Preferably, the initiator is divided into three equal parts by weight and added to the polymerization reaction system to carry out the polymerization reaction.

[0026] Preferably, the polymerization reaction is carried out under a nitrogen atmosphere, at a reaction temperature of 78-85°C, and for a reaction time of 2-3 hours.

[0027] More preferably, the method for preparing the acrylate polymer includes: (1) Divide the second solvent into a first solvent, a second solvent, and a third solvent in a weight ratio of 1:(0.2-0.3):(0.1-0.2); (2) Mix the first solvent with the soft monomer, hard monomer, hydroxyl-containing monomer and 2-acrylamide-2-methylpropanesulfonic acid at 40-50℃ for 30-40 minutes to obtain a monomer solution; (3) Mix the second solvent with the initiator at room temperature for 10-20 minutes to obtain the initiator solution; (4) Add three parts of solvent to the reactor, purge the air in the reactor with nitrogen 3-5 times, raise the temperature to 78-85℃, and then add the monomer solution and the initiator solution to the third part of solvent in the reactor in parallel flow. Control the addition to be completed in 1.5-2 hours, and then continue to keep the temperature for 2-3 hours. After cooling to room temperature, acrylate polymers are obtained.

[0028] Preferably, the functional monomer is selected from acrylate monomers containing isocyanate groups and / or acrylate monomers containing vinyl ethers.

[0029] More preferably, the functional monomer is selected from acrylate monomers containing isocyanate groups and acrylate monomers containing vinyl ethers, and preferably the weight ratio of the acrylate monomers containing isocyanate groups to the acrylate monomers containing vinyl ethers is 1:(2-5), more preferably 1:(3.5-4).

[0030] In this invention, it was discovered that controlling the functional monomers to be the aforementioned isocyanate-containing acrylate monomers and vinyl ether-containing acrylate monomers enables the UV-resistant adhesive to possess both excellent initial strength and excellent peelability. This is presumably because the isocyanate-containing acrylate monomers react with the hydroxyl groups on the acrylate polymer backbone to form a strong urethane crosslinking network, thereby giving the adhesive layer excellent adhesion and water resistance. When peeling is required, UV irradiation of the vinyl ether-containing acrylate monomers in the system activates the cationic photoinitiator, initiating rapid cationic polymerization of the vinyl ether groups. The volume shrinkage and new network structure generated by this polymerization reaction cause huge stress inside the cured adhesive layer, thus making it easier to peel off.

[0031] Preferably, the acrylate monomer containing the isocyanate group is selected from at least one of isocyanate methacrylate, isocyanate methacrylate and 3-isopropenyl-α,α-dimethylbenzyl isocyanate, and is more preferably isocyanate methacrylate.

[0032] Preferably, the vinyl ether-containing acrylate monomer is selected from 2-(vinyloxy)ethyl methacrylate and / or ethoxyethoxyethyl acrylate, and more preferably ethoxyethoxyethyl acrylate.

[0033] Preferably, the catalyst is selected from organotin catalysts, such as dioctyltin laurate and / or dibutyltin dilaurate, with dioctyltin laurate being the most preferred.

[0034] Preferably, the first solvent is selected from alcohol ether solvents.

[0035] Preferably, the alcohol ether solvent includes at least one of propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol n-propyl ether, propylene glycol n-butyl ether, propylene glycol methyl ether acetate, and propylene glycol ethyl ether acetate, and is preferably propylene glycol methyl ether acetate.

[0036] Preferably, the preparation method of the acrylate adhesive includes the following steps: The functional monomer is mixed with the solvent to obtain a functional monomer solution. The acrylate polymer and the catalyst are added to the reactor and mixed evenly. Then the temperature is raised to 40-50℃, and the functional monomer solution is dropped into the reactor. The dropping is completed in 30-50 minutes. After the dropping is completed, the reaction is continued at the temperature for 20-30 minutes to obtain the acrylate adhesive.

[0037] Preferably, the photoinitiator is selected from photoinitiator 184, photoinitiator 1173, photoinitiator 261, and photoinitiator 262.

[0038] More preferably, the photoinitiator is a combination of photoinitiator 184 and photoinitiator 261, and preferably the weight ratio of photoinitiator 184 to photoinitiator 261 is 1:(1.5-2).

[0039] The photoinitiator 184 of the present invention rapidly decomposes to generate free radicals, which initiate free radical polymerization of carbon-carbon double bonds in acrylate polymers and functional monomers, thereby enabling the adhesive layer to cure rapidly. In addition, the photoinitiator 261 absorbs light energy to generate strong Lewis acids, which can initiate cationic ring-opening polymerization of vinyl ether groups in functional monomers. This will produce significant shrinkage stress that damages or weakens the previously formed free radical polymerization network and chemical crosslinking points, thus achieving better peeling of the adhesive layer.

[0040] Preferably, the curing agent is selected from isocyanate curing agents, at least one of toluene diisocyanate, isophorone diisocyanate and hexamethylene diisocyanate diphenyl, and more preferably hexamethylene diisocyanate diphenyl.

[0041] Preferably, the weight ratio of the acrylate adhesive, photoinitiator and curing agent is 100:(3-10):(1-5), more preferably 100:(4-5):(2-3).

[0042] The second aspect of the present invention provides a method for preparing the UV-reducing adhesive described in the first aspect of the present invention. The method includes mixing an acrylic adhesive, a photoinitiator and a curing agent under light-protected conditions to obtain a UV-reducing adhesive.

[0043] There are no special restrictions on the mixing method described above, as long as the mixture is evenly mixed.

[0044] The third aspect of this invention provides the application of the UV anti-adhesion adhesive provided above in wafer dicing.

[0045] Specifically, when the UV anti-adhesion adhesive of the present invention is used in wafer dicing, it is generally made into an anti-adhesion film for use. The anti-adhesion film includes a substrate, a UV anti-adhesion adhesive, and a release film stacked in sequence. The substrate is not particularly limited and can be made of materials well known to those skilled in the art, including but not limited to substrates made of the following materials: polyethylene, polypropylene, polybutene, polyurethane, etc. The release film is not particularly limited and can be made of materials well known to those skilled in the art, including but not limited to films made of the following materials: polyethylene, polypropylene, polybutadiene, polytetrafluoroethylene, etc.

[0046] Compared with the prior art, the present invention has at least the following beneficial effects: 1. The UV-resistant adhesive in this invention has an excellent balance between initial high-strength adhesive force and rapid, thorough peeling performance after UV treatment; 2. The UV-resistant adhesive in this invention has excellent water resistance and good environmental stability. Detailed Implementation

[0047] The present invention will now be described in detail through embodiments: Example 1 Preparation of acrylate polymers: (1) Prepare 100 parts of isobutyl acrylate, 5.6 parts of acrylamide, 11 parts of hydroxyethyl acrylate, 3 parts of ethyl acetoacetate methacrylate, 2.4 parts of 2-acrylamide-2-methylpropanesulfonic acid, 1.2 parts of azobisisobutyronitrile, 65 parts of propylene glycol methyl ether acetate, and 15 parts of ethyl acetate by weight. (2) Mix 65 parts of propylene glycol methyl ether acetate and 15 parts of ethyl acetate evenly and divide them by weight into 58 parts of the first solvent, 15 parts of the second solvent, and 7 parts of the third solvent. (3) Mix the first solvent with isobutyl acrylate, acrylamide, hydroxyethyl acrylate, ethyl acetoacetate methacrylate and 2-acrylamide-2-methylpropanesulfonic acid at 40-50°C for 30-40 minutes to obtain a monomer solution; (4) Mix the second solvent with azobisisobutyronitrile at room temperature for 10-20 minutes to obtain an initiator solution; (5) Add three parts of solvent to the reactor, purge the air in the reactor with nitrogen 3-5 times, raise the temperature to 78-85℃, and then add the monomer solution and the initiator solution to the third part of solvent in the reactor in parallel flow. Control the addition to be completed in 1.5-2 hours, and then continue to keep the temperature for 2-3 hours. After cooling to room temperature, acrylate polymers are obtained.

[0048] Acrylic adhesives: (1) Prepare 100 parts of acrylate polymer, 2 parts of isocyanate methacrylate, 8 parts of ethoxyethoxyethyl acrylate, 0.03 parts of dioctyltin laurate, and 80 parts of propylene glycol methyl ether acetate by weight. (2) Mix isocyanate methacrylate, ethoxyethoxyethyl acrylate and propylene glycol methyl ether acetate evenly to obtain a functional monomer solution; (3) Add the acrylate polymer and dioctyltin laurate to the reactor and mix them evenly. Then raise the temperature to 45°C and drop the functional monomer solution into the reactor. Control the dropping to be completed in 40 minutes. After the dropping is completed, continue to keep the temperature and react for 25 minutes to obtain the acrylate adhesive.

[0049] Preparation of UV-resistant adhesives: (1) Prepare 100 parts by weight of acrylic adhesive, 1.5 parts of photoinitiator 184, 2.5 parts of photoinitiator 261, and 2 parts of hexamethylene diisocyanate diphenyl; (2) Mix the acrylic adhesive, photoinitiator 184, photoinitiator 261 and hexamethylene diisocyanate diphenyl evenly to obtain UV anti-tack adhesive.

[0050] Example 2 Preparation of acrylate polymers: (1) Prepare 100 parts of isooctyl acrylate, 6 parts of acrylamide, 10 parts of hydroxyethyl acrylate, 3 parts of ethyl acetoacetate methacrylate, 3 parts of 2-acrylamide-2-methylpropanesulfonic acid, 1.2 parts of azobisisobutyronitrile, 65 parts of propylene glycol methyl ether acetate, and 15 parts of ethyl acetate by weight. (2) Mix 65 parts of propylene glycol methyl ether acetate and 15 parts of ethyl acetate evenly and divide them by weight into 58 parts of the first solvent, 15 parts of the second solvent, and 7 parts of the third solvent. (3) Mix the first solvent with isobutyl acrylate, acrylamide, hydroxyethyl acrylate, ethyl acetoacetate methacrylate and 2-acrylamide-2-methylpropanesulfonic acid at 40-50°C for 30-40 minutes to obtain a monomer solution; (4) Mix the second solvent with azobisisobutyronitrile at room temperature for 10-20 minutes to obtain an initiator solution; (5) Add three parts of solvent to the reactor, purge the air in the reactor with nitrogen 3-5 times, raise the temperature to 78-85℃, and then add the monomer solution and the initiator solution to the third part of solvent in the reactor in parallel flow. Control the addition to be completed in 1.5-2 hours, and then continue to keep the temperature for 2-3 hours. After cooling to room temperature, acrylate polymers are obtained.

[0051] Acrylic adhesives: (1) Prepare 100 parts of acrylate polymer, 2.5 parts of isocyanate methacrylate, 9.5 parts of ethoxyethoxyethyl acrylate, 0.03 parts of dioctyltin laurate, and 120 parts of propylene glycol methyl ether acetate by weight. (2) Mix isocyanate methacrylate, ethoxyethoxyethyl acrylate and propylene glycol methyl ether acetate evenly to obtain a functional monomer solution; (3) Add the acrylate polymer and dioctyltin laurate to the reactor and mix them evenly. Then raise the temperature to 45°C and drop the functional monomer solution into the reactor. Control the dropping to be completed in 50 minutes. After the dropping is completed, continue to keep the temperature and react for 30 minutes to obtain the acrylate adhesive.

[0052] Preparation of UV-resistant adhesives: (1) Prepare 100 parts by weight of acrylic adhesive, 1.5 parts of photoinitiator 184, 2.5 parts of photoinitiator 261, and 3 parts of hexamethylene diisocyanate diphenyl; (2) Mix the acrylic adhesive, photoinitiator 184, photoinitiator 261 and hexamethylene diisocyanate diphenyl evenly to obtain UV anti-tack adhesive.

[0053] Example 3 The method of Example 1 is the same, except that in the preparation of the acrylate polymer, 14 parts of hydroxyethyl acrylate and 0 parts of ethyl acetoacetate methacrylate are used. The rest is the same as in Example 1, and the final preparation yields acrylate polymers and corresponding acrylate adhesives and UV-resistant adhesives.

[0054] Example 4 The method of Example 1 is the same, except that in the preparation of the acrylate polymer, there are 5 parts of hydroxyethyl acrylate and 9 parts of ethyl acetoacetate methacrylate. The rest is the same as in Example 1, and the final preparation yields acrylate polymers and corresponding acrylate adhesives and UV-resistant adhesives.

[0055] Example 5 The method of Example 1 is different in that: in the preparation of the acrylate adhesive, there are 8 parts of isocyanate methacrylate and 2 parts of ethoxyethoxyethyl acrylate. The rest is the same as in Example 1, and the final preparation yields an acrylate adhesive and the corresponding UV-resistant adhesive.

[0056] The rest is the same as in Example 1, and the final preparation yields an acrylate adhesive and the corresponding UV-resistant adhesive.

[0057] Example 6 The method of Example 1 is followed, except that 10 parts of 2-acrylamide-2-methylpropanesulfonic acid are used in the preparation of the acrylate polymer. The rest is the same as in Example 1, and the final preparation yields acrylate polymers and corresponding acrylate adhesives and UV-resistant adhesives.

[0058] Example 7 The method of Example 1 is the same, except that in the preparation of the UV anti-adhesive, 0 parts of photoinitiator 184 and 4 parts of photoinitiator 261 are used. The rest is the same as in Example 1, and the UV-resistant adhesive is finally prepared.

[0059] Example 8 The method of Example 1 is the same, except that in the preparation of the UV anti-adhesive, 4 parts of photoinitiator 184 and 0 parts of photoinitiator 261 are used. The rest is the same as in Example 1, and the UV-resistant adhesive is finally prepared.

[0060] Comparative Example 1 The method of Example 1 is followed, except that 2-acrylamide-2-methylpropanesulfonic acid is not used in the preparation of the acrylate adhesive; The rest is the same as in Example 1, and the final preparation yields acrylate polymers and corresponding acrylate adhesives and UV-resistant adhesives.

[0061] Performance testing The UV-resistant adhesive was coated onto a 50-micron thick polyethylene substrate using a coating machine. After coating, it was placed in a 100℃ oven and baked for 2 minutes. After drying, the film thickness was approximately 22±2 μm. Then, a release film was attached using a flatbed laminator. The release surface of a PET lightweight release film was attached to the dried UV-resistant adhesive. The film was cured at 60℃ for 48 hours to obtain a UV-resistant tape. After removing the release film from the UV-resistant tape, it was pasted onto a mirror stainless steel plate. Then, it was rolled back and forth three times with a 1 kg rubber roller and left to stand in the dark for 15 minutes to obtain a sample.

[0062] Initial peel strength test: The initial peel strength was tested using a 180° peel tester according to GB / T2792-2014. The test speed was 300 mm / min, and the test temperature was 25℃.

[0063] Peel strength test after UV irradiation: The sample was subjected to UV irradiation under the following conditions: wavelength 365nm, intensity 140mW / cm², energy 5J / cm². 2 Under nitrogen protection, the UV-irradiated material was allowed to stand for 20 minutes after irradiation, and then the peel strength was tested using a 180° peel tester. The test speed was 300 mm / min, and the test temperature was 25℃. Peel strength test after immersion in water: After immersing the sample in pure water at 50°C for 2 hours, remove it and wipe it dry. Then, use a 180° peel tester to test the peel strength after immersion in water. The test speed is 300 mm / min, and the test temperature is 25°C.

[0064] The test results are shown in Table 1.

[0065] Table 1 Test Results

[0066] As can be seen from the test results in Table 1, the UV-resistant adhesive of the present invention has excellent peelability after UV irradiation, while maintaining high initial bond strength and excellent water resistance.

Claims

1. A UV-resistant adhesive, characterized in that, The UV-resistant adhesive includes: acrylic adhesive, photoinitiator, and curing agent; The acrylate adhesive is prepared by acrylate polymers and functional monomers in the presence of a catalyst and a first solvent.

2. The UV anti-tack adhesive according to claim 1, characterized in that, The weight ratio of the acrylate polymer to the functional monomer is 1:(0.05-0.2); the weight of the catalyst is 0.01%-0.05% of the mass of the acrylate polymer; and the weight of the first solvent is 6-10 times the weight of the functional monomer.

3. The UV anti-tack adhesive according to claim 1, characterized in that, The acrylate polymers include soft monomer structural units provided by soft monomers, hard monomer structural units provided by hard monomers, hydroxyl-containing monomer structural units provided by hydroxyl-containing monomers, and 2-acrylamide-2-methylpropanesulfonic acid structural units provided by 2-acrylamide-2-methylpropanesulfonic acid.

4. The UV anti-tack adhesive according to claim 3, characterized in that, The soft monomer includes at least one of methyl acrylate, ethyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate, isobutyl acrylate, and isooctyl acrylate; the hard monomer includes at least one of methyl acrylate, methyl methacrylate, ethyl methacrylate, acrylamide, styrene, isobornyl methacrylate, and cyclohexyl methacrylate; the hydroxyl-containing monomer includes at least one of hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxybutyl acrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, and acetoacetyl methacrylate.

5. The UV anti-tack adhesive according to claim 3, characterized in that, The method for preparing the acrylate polymer includes: in the presence of a second solvent and an initiator, a soft monomer, a hard monomer, a hydroxyl-containing monomer and 2-acrylamide-2-methylpropanesulfonic acid undergo a polymerization reaction to obtain the acrylate polymer.

6. The UV anti-tack adhesive according to claim 1, characterized in that, The functional monomer is selected from acrylate monomers containing isocyanate groups and acrylate monomers containing vinyl ethers; the weight ratio of the acrylate monomers containing isocyanate groups to the acrylate monomers containing vinyl ethers is 1:(2-5).

7. The UV anti-tack adhesive according to claim 6, characterized in that, The isocyanate-containing acrylate monomer is selected from at least one of isocyanoethyl methacrylate, isocyanoethyl acrylate, and 3-isopropenyl-α,α-dimethylbenzyl isocyanate; the vinyl ether-containing acrylate monomer is selected from 2-(ethoxy)ethyl methacrylate and / or ethoxyethoxyethyl acrylate.

8. The UV anti-tack adhesive according to claim 1, characterized in that, The catalyst is selected from organotin catalysts; the first solvent is selected from alcohol ether solvents; the photoinitiator is selected from photoinitiator 184, photoinitiator 1173, photoinitiator 261, and photoinitiator 262; and the curing agent is selected from isocyanate curing agents.

9. A UV-resistant adhesive according to any one of claims 1-8, characterized in that, The preparation method includes mixing an acrylic adhesive, a photoinitiator, and a curing agent under light-protected conditions to obtain a UV-resistant adhesive.

10. The application of the UV anti-tack adhesive according to any one of claims 1-8 in wafer dicing.

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