Ultraviolet curing imprinting adhesive

Abstract

The invention discloses an ultraviolet curing imprinting adhesive, which comprises an acrylate prepolymer A, acrylic resin B, an inorganic filler, a photoinitiator and an auxiliary agent, the main chain of the acrylate prepolymer A contains a substituted or unsubstituted structural unit; ar is selected from any one of O, S, S (= O), S (= O) 2, N (R2), C (= O), C (= O) O, substituted or unsubstituted C1-30 aliphatic chain alkyl, C3-30 alicyclic alkyl, and substituted or unsubstituted C6-50 aromatic alkyl; r1 is selected from any one of H, substituted or unsubstituted C1-30 aliphatic chain group alkyl, substituted or unsubstituted C1-30 alkyl ether group and substituted or unsubstituted C1-30 alkyl ester group, and R2 is selected from H and C1-30 aliphatic chain group alkyl. The ultraviolet nanoimprint photoresist provided by the invention has the advantages of small volume shrinkage, good stability and no pungent smell, is suitable for AR / VR, effectively improves the precision and integrity of a grating, and improves the display performance.

Description

Technical Field

[0001] The present invention belongs to the technical field of nanoimprinting, and particularly relates to an ultraviolet curable imprinting adhesive. Background Art

[0002] At present, with the increasing application scenarios of augmented reality (AR) glasses, the wearing comfort and functional requirements of AR glasses are also getting higher and higher. Among many AR optical waveguide solutions, surface relief gratings (a kind of ultraviolet curable imprinting adhesive RG) can make the lens the thinnest and lightest, and there is a mature mass production process. The principle of surface relief gratings is to fabricate a nano-scale grating structure on a glass sheet to achieve the required optical waveguide effect. If lithography etching or machining methods are used to process these nano-scale gratings, the cost is high and the time consumption is long. Nanoimprint lithography is the only processing technology that can achieve low-cost and high-efficiency mass production.

[0003] There are various classifications of nanoimprinting, but the two most important and basic types are thermal nanoimprinting (T-NIL) and ultraviolet nanoimprinting (UV-NIL). During the ultraviolet nanoimprinting process, since photopolymerization technology is used in curing, the distance between monomers changes from van der Waals force to covalent distance after curing. Therefore, the ultraviolet nanoimprinting photoresist inevitably has the problem of volume shrinkage, and this volume shrinkage will lead to a reduction in the accuracy and integrity of the grating. Therefore, how to reduce the volume shrinkage rate of the photoresist to improve the accuracy and integrity of the grating is a very challenging research direction. At present, many methods have been reported for reducing the volume shrinkage of the photoresist. For example, people have adopted various methods such as cationic photopolymerization, thiol-ene click reaction, and swelling monomers to prepare new photoresists with low volume shrinkage. However, these reported photoresists for ultraviolet nanoimprinting still have some disadvantages. For example, the cationic system has problems such as long polymerization time and being greatly affected by external conditions such as moisture and humidity; the storage stability of the thiol-ene system is poor, and the thiol compounds also make the photoresist formulation have an unpleasant smell; and the photoresists composed of swelling monomers such as spiro compounds generally have disadvantages such as poor compatibility, few raw materials, and high costs. Therefore, it is urgent to develop an ultraviolet nanoimprinting photoresist with small volume shrinkage, good stability, and no pungent smell. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides an ultraviolet curable imprinting adhesive, which comprises an acrylate prepolymer A, an acrylic resin B, an inorganic filler, a photoinitiator, and an auxiliary agent; the main chain of the acrylate prepolymer A contains substituted or unsubstituted structural units; Ar is selected from O, S, S(=O)2, N(R2), C(=O), C(=O)O, a substituted or unsubstituted C 1-30 aliphatic hydrocarbon group of the lipid chain, C 3-30An alicyclic hydrocarbon group, a substituted or unsubstituted C 6-50 Of the aromatic hydrocarbon group; R1 is selected from H, a substituted or unsubstituted C 1-30 Of the aliphatic hydrocarbon group, a substituted or unsubstituted C 1-30 Of the alkoxy group, a substituted or unsubstituted C 1-30 Of the alkyl ester group; R2 is selected from H, O, C 1-30 Of the aliphatic hydrocarbon group.

[0005] Furthermore, the acrylate prepolymer A has the structural formula shown in Formula 1: R3 is H or methyl, R1 and Ar have the definitions given in claim 1, n is a natural integer greater than or equal to 1; R4, R5, R6, and R7 are each independently selected from hydrogen, hydroxyl, cyano, nitro, C 1-30 Of the aliphatic hydrocarbon group, C 3-30 Of the alicyclic hydrocarbon group, C 6-50 Of the aromatic hydrocarbon group; m is 0 or 1.

[0006] The acrylate prepolymer A represented by Formula 1 is an acrylate monomer with a molecular weight not exceeding 600 or an acrylate oligomer containing R1 repeating units, that is, n is a natural integer from 1 to 6 or refers to the degree of polymerization.

[0007] Preferably, the Ar is selected from O, S, S(=O), S(=O)2, NH, C(=O), C(=O)O, C 1-30 Of the aliphatic hydrocarbon group, C 3-30 Of the alicyclic hydrocarbon group or C 6-50 Of the aromatic hydrocarbon group; where C 1-30 Of the aliphatic hydrocarbon group, C 3-30 Of the alicyclic hydrocarbon group or C 6-50 Of the aromatic hydrocarbon group may be substituted by one or more R', and R' is selected from hydrogen, hydroxyl, ester group, C 1-6 Of the alkyl group, C 6-30 Of the aryl group; R' is bonded or fused to form a ring with the C 3-30 Of the alicyclic hydrocarbon cycloalkyl group and C 6-50 Of the aromatic hydrocarbon group.

[0008] Preferably, each C 1-30 Of the aliphatic hydrocarbon group is independently preferably C 1-8 Of the aliphatic hydrocarbon; for example, the C 1-30 Of the aliphatic hydrocarbon group is selected from methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, 2-methylbutyl, n-pentyl, sec-pentyl, neopentyl, n-hexyl, neohexyl, n-heptyl, n-octyl, 2-ethylhexyl; each C 3-30 Of the alicyclic hydrocarbon group is independently preferably C3-6 a monocyclic aliphatic hydrocarbon group, or C 3-6 a polycyclic aliphatic hydrocarbon group formed by the fusion of 1 to 3 of the monocyclic aliphatic hydrocarbon groups of C 3-12 a polycyclic aliphatic hydrocarbon group of C 3-30 the aliphatic hydrocarbon group of C is selected from cyclopropane, cyclobutane, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, cyclododecane, cyclotetradecane, cyclohexadecane, cyclooctadecane, tricyclodecanyl; each C 6-50 the aromatic hydrocarbon group is preferably selected from those having 1 to 4 benzene ring structures and the benzene rings are connected by a single bond, C 1-6 an alkyl group of C, an ester group of C1-C6, a bridged C 6-30 the aromatic hydrocarbon group of C 6-50 the aromatic hydrocarbon group of C is selected from phenyl, biphenyl, methyl terephthalate group, diphenylmethane group, diphenylethyl group, diphenylpropyl group.

[0009] Preferably, R' is preferably hydrogen, a hydroxyl group, an ester group, C 1-6 an alkyl group of C, an aromatic hydrocarbon group having 1 to 2 benzene ring structures and the benzene rings are connected by a single bond C6-C 15 the aromatic hydrocarbon group of C, for example, R' is selected from methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, 2-methylbutyl, n-pentyl, sec-pentyl, neopentyl, n-hexyl, neohexyl, phenyl, biphenyl.

[0010] Furthermore, R4, R5, R6, and R7 are each independently selected from hydrogen, a hydroxyl group, a cyano group, a nitro group, C 1-6 an alkyl group of C, an aromatic hydrocarbon group having 1 to 2 benzene ring structures and the benzene rings are connected by a single bond C6-C 15 the aromatic hydrocarbon group of C, for example, R4, R5, R6, and R7 are selected from hydrogen, a hydroxyl group, a cyano group, a nitro group, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, 2-methylbutyl, n-pentyl, sec-pentyl, neopentyl, phenyl, biphenyl.

[0011] Furthermore, R1 is selected from an unsubstituted or hydroxyl-substituted C 1-8 aliphatic hydrocarbon group, an unsubstituted or hydroxyl-substituted C 1-8 alkoxy group;

[0012] Ar is selected from: O, S, S(=O), S(=O)2, NH, C(=O), C(=O)O, an unsubstituted or hydroxyl-substituted C 1-8 aliphatic hydrocarbon group, an unsubstituted or hydroxyl-substituted C 3-12 alicyclic hydrocarbon group, an unsubstituted or phenyl substituted by a hydroxyl group, an ester group, C 1-6 an alkyl group of C.

[0013] In the present invention, the weight parts ratio of acrylate prepolymer A, acrylic resin B, inorganic filler, photoinitiator, and additive is (5 - 60):(0 - 60):(0 - 80):(0.5 - 5):(0.1 - 70).

[0014] In a preferred embodiment of the present invention, the contents of acrylic resin B and inorganic filler are both non - zero.

[0015] In a preferred embodiment of the present invention, acrylate B does not contain structural units.

[0016] Furthermore, the weight parts ratio of acrylate prepolymer A, acrylic resin B, inorganic filler, photoinitiator, and additive is (10 - 30):(5 - 30):(10 - 40):(0.5 - 5):(0.1 - 70).

[0017] Furthermore, acrylic resin B is at least selected from any one or a combination of epoxy (meth)acrylate resins, polyurethane acrylate resins, polyether acrylate resins, and polyester acrylate resins containing 1 - 5 photopolymerizable functional groups.

[0018] The molecular weights of the epoxy (meth)acrylate resin, polyurethane acrylate resin, polyether acrylate resin, and polyester acrylate resin do not exceed 600.

[0019] Preferably, acrylic resin B is selected from 1 - 5 photopolymerizable functionality acrylic resins having hydroxy - substituted or unsubstituted C 1-8 alkylene ether - based repeating units, 1 - 5 photopolymerizable functionality acrylic resins having hydroxy - substituted or unsubstituted C 1-8 alkylene ester - based repeating units, and 1 - 5 photopolymerizable functionality acrylic resins having hydroxy - substituted or unsubstituted C 6-15 arylene ester - based repeating units.

[0020] Specifically, the acrylate B is selected from methyl acrylate, n-pentyl acrylate, isobutyl acrylate, isopentyl acrylate, hexyl acrylate, isooctyl acrylate, ethylene glycol diacrylate, ethylene glycol dimethacrylate, 1,3-propanediol diacrylate, 1,3-propanediol dimethacrylate, butanediol diacrylate, butanediol dimethacrylate, diethylene glycol diacrylate, diethylene glycol dimethacrylate, triethylene glycol diacrylate, triethylene glycol dimethacrylate, neopentyl glycol diacrylate, neopentyl glycol dimethacrylate, 1,6-hexanediol diacrylate, 1,6-hexanediol dimethacrylate, 1,12-dodecanediol diacrylate, 1,12-dodecanediol dimethacrylate, PEG (polyethylene glycol) 200 diacrylate, PEG200 dimethacrylate, PEG600 diacrylate, PEG600 dimethacrylate, poly tetraethylene glycol diacrylate, poly tetraethylene glycol dimethacrylate, polyethylene glycol phenyl ether acrylate, polypropylene glycol diacrylate, polypropylene glycol dimethacrylate, polybutylene glycol diacrylate, polybutylene glycol dimethacrylate, trimethylolpropane tri(meth)acrylate, glycerol trihydroxypropyl ether triacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, di(trimethylolpropane) tetraacrylate, poly dipentaerythritol pentaacrylate, dipentaerythritol penta- / hexa-acrylate, dipropylene glycol diacrylate, phenyl acrylate, phenyl methacrylate, 1,4-phenylene diacrylate, 2-phenoxyethyl methacrylate, phenoxy methyl 2-methyl-2-acrylate, 2-methyl-2-[1,1'-biphenyl]-3-ethyl-2-acrylate, 2-phenoxyethyl acrylate, 4,4'-diphenyl acrylate, bisphenol A dimethacrylate, dipropylene glycol diacrylate, phenyl phenoxy and acrylate, phenoxybenzyl acrylate, biphenylmethanol acrylate, o-phenoxyethyl phenyl methacrylate, biphenylmethanol methacrylate, vinyl methacrylate, bisphenol A epoxy vinyl resin, 4-vinylbenzyl 2-methyl-2-acrylate, 4-(1,2,2-triphenylethylene) phenol acrylate, 4-(3,5-dimethoxystyryl) phenyl acrylate, vinyl ethoxyethyl acrylate, methyl 1-H-pyrrole-3-vinyl formate, dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate, N-methacrylamide ethanolamine methyl methacrylate, poly(ethylene glycol phenyl ester) diacrylate, poly(ethylene glycol phenyl ester) dimethacrylate, poly(ethylene glycol phenyl ester) ethoxy diacrylate, poly(ethylene glycol phenyl ester) ethoxy dimethacrylate, or any one or a combination of at least two thereof.

[0021] Further, the inorganic filler is selected from surface-modified or unmodified inorganic nanoparticles, and the inorganic nanoparticles are selected from any one or a combination of more than one of ZrO2, TiO2, ZnS, ZnO, CeO2, Ta2O5, Bi4Ti3O2, Nb2O5, ITO, HfO2, SnO2, MoO3, Sb2O3, Sb2O5, Nd2O3.

[0022] Preferably, the particle size range of the nanoparticles is 10 nm - 50 nm.

[0023] Examples of the surface modification methods include esterification method, coupling agent method, surface grafting method, organic adsorption coating method, etc. For example, the inorganic nanoparticles can be surface-modified by a silane coupling agent to improve the compatibility and dispersibility with the main resin material. In this embodiment, KH-560 silane coupling agent is used to surface-modify the nanoparticles by the coupling agent method.

[0024] Further, the photoinitiator is selected from any one or a combination of more than one of α-hydroxy ketone initiators, benzoin initiators, acylphosphine oxide initiators, acetophenone initiators, morpholinone initiators, naphthalimide photoinitiators, oxime ester photoinitiators, carbazolyl photoinitiators.

[0025] Preferably, the photoinitiator is selected from α-hydroxy ketone initiators, benzoin initiators, acylphosphine oxide initiators, acetophenone initiators, morpholinone initiators, naphthalimide photoinitiators, oxime ester photoinitiators, carbazolyl photoinitiators.

[0026] Preferably, the photoinitiator is preferably at least one of diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide, ethyl phenyl(2,4,6-trimethylbenzoyl)phosphinate, phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)butanone, 1-hydroxycyclohexyl phenyl ketone, commercially available photoinitiator of OXE-01 type, commercially available photoinitiator of OXE-02 type.

[0027] Further, the additives include at least one of surfactants, solvents, adhesion promoters, defoamers.

[0028] Preferably, the surfactant is selected from at least one of polyether-modified polydimethylsiloxane, polyester-modified polydimethylsiloxane containing polyacrylate functional groups, polyether-modified polydimethylsiloxane containing hydroxyl groups, acryloyloxy-modified silane polymers.

[0029] Preferably, the solvent is selected from one or a mixture of esters, alcohols, ethers, ketones, and benzenes. The ester solvents are selected from: ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, propylene glycol monobutyl ether acetate, methoxybutyl acetate, 3-methoxybutyl acetate, methoxypentyl acetate, diethylene glycol monomethyl ether acetate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, dipropylene glycol monomethyl ether acetate, triethylene glycol monomethyl ether acetate, triethylene glycol monoethyl ether acetate, 3-methyl-3-methoxybutyl acetate, ethylene glycol diacetate, 1,3-butanediol diacetate, 1,6-hexanediol diacetate, cyclohexanol acetate, or one or more of them; the alcohols are selected from: methanol, ethanol, cyclohexanol, ethylene glycol, propylene glycol, butanediol, diethylene glycol, dipropylene glycol, triethylene glycol, or one or more of them; the ethers are selected from: ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monomethyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, diethylene glycol dibutyl ether, or one or more of them; the ketones are selected from: acetone, methyl amyl ketone, methyl isopropyl ketone, methyl isopentyl ketone, diisopropyl ketone, diisobutyl ketone, methyl isobutyl ketone, cyclohexanone, ethyl amyl ketone, methyl butyl ketone, methyl hexyl ketone, or one or more of them; the benzenes are selected from: any one of toluene and xylene or a combination of at least two of them.

[0030] The ultraviolet curable imprinting adhesive provided by the present invention contains a rigid benzene ring structure in the main chain. While the obtained photoresist has a high refractive index and good mechanical properties, the aromatic rings are interrupted by flexible aliphatic hydrocarbon groups or heteroatoms, reducing the shrinkage rate of the resin, having a small volume change during the resin curing process, and resulting in a high pattern accuracy. When it is applied to a nanoimprint photoresist for preparing AR / VR gratings, the imprint pattern accuracy is high. Detailed implementation manners

[0031] The following will describe the implementation schemes of the present invention in detail in combination with examples. However, those skilled in the art will understand that the following examples are only used to illustrate the present invention and should not be regarded as limiting the scope of the present invention. For those not specified in the examples, they are carried out according to conventional conditions or the conditions recommended by the manufacturer. Those reagents or instruments not specified by the manufacturer can be obtained as conventional products through commercial purchase.

[0032] Preparation examples:

[0033] (1) Put the acrylic resin prepolymer A, acrylic resin B, inorganic filler, photoinitiator, and additives into the reaction kettle in proportion and stir. Control the temperature at about 30°C, the stirring speed at 1500 rpm, and the stirring time at 4 h. Obtain the mixed material.

[0034] (2) Filter the mixed material with a filter element pore size of 0.25 μm. Obtain the filtered material.

[0035] Photoresist Examples 1-12, Comparative Examples 1-4:

[0036] The structures of the acrylic resin prepolymer A and acrylic resin B used in Examples 1-12 are shown in Table 1 below:

[0037] Table 1 Component Table

[0038]

[0039]

[0040]

[0041] The components and parts by weight in Examples 1-12 are shown in Table 2 below:

[0042] Table 2 Component Weight Fraction Table

[0043]

[0044] Prepare the photocurable photoresist by following the preparation steps of the preparation examples for the components of the above Examples 1-12 and D1-4.

[0045] Performance testing:

[0046] Number the imprinting adhesives prepared in Examples 1-12 and Comparative Examples 1-4 as 1-16 respectively and conduct the following tests:

[0047] 1) Coat 5 μm on the quartz substrate using inkjet printing technology. After drying the substrate in a vacuum drying oven for 30 minutes, pre-bake it on a vacuum hot plate at 80°C for 1 minute, and then place it in a UV curing machine to irradiate the organic-inorganic composite material at an intensity of about 2000 mJ / cm2 to cure it. Then measure the refractive index after film formation;

[0048] 2) Volume shrinkage rate: Measure according to Standard ISO 3521-1997;

[0049] 3) Haze: Detect using a haze tester.

[0050] The test results are shown in Table 3 below:

[0051] Table 3

[0052]

[0053] As can be seen from the above table, for the photocurable imprinting adhesives prepared in Examples 1 to 16 of the present invention, compared with the imprinting adhesives of Examples 17 - 20, when the rigid benzene ring structure in the main chain of the photocurable resin prepolymer is interrupted by flexible functional groups, the formed imprinting structure has significantly improved performance in terms of refractive index, shrinkage rate, etc. In particular, the imprinting adhesive containing a resin prepolymer with a phthalene structural unit interrupted by a cycloalkyl group in the components shows good shrinkage rate performance, and at the same time has more excellent optical function and film-forming performance. Therefore, it is more suitable as a grating material for AR / VR, and can prepare higher graphic accuracy and integrity, improving the AR / VR display performance.

[0054] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, including any other suitable combination of each technical feature. These simple modifications and combinations should also be regarded as the content disclosed by the present invention and fall within the protection scope of the present invention.

Claims

1. An ultraviolet curable imprinting adhesive, characterized in that, It contains acrylate prepolymer A, acrylic resin B, inorganic filler, photoinitiator, and additives; the main chain of the acrylate prepolymer A contains substituted or unsubstituted structural units; Ar is selected from any one of O, S, S(=O), S(=O)2, N(R2), C(=O), C(=O)O, substituted or unsubstituted C 1-30 aliphatic hydrocarbon group of, C 3-30 alicyclic hydrocarbon group of, substituted or unsubstituted C 6-50 any one of aromatic hydrocarbon groups of; R1 is selected from H, substituted or unsubstituted C 1-30 aliphatic hydrocarbon group of, substituted or unsubstituted C 1-30 alkoxy group of, substituted or unsubstituted C 1-30 any one of alkoxycarbonyl groups of, R2 is selected from H, C 1-30 aliphatic hydrocarbon group of.

2. The ultraviolet curable imprinting adhesive according to claim 1, wherein The acrylate prepolymer A has the structural formula shown in Formula I: R3 is H or methyl, R1 and Ar have the definitions given in Claim 1, and n is a natural integer greater than or equal to 1; R4, R5, R6, and R7 are each independently selected from any one of hydrogen, hydroxyl, cyano, nitro, a C 1-30 aliphatic hydrocarbon group, a C 3-30 alicyclic hydrocarbon group, a C 6-50 aromatic hydrocarbon group; and m is 0 or 1.

3. The ultraviolet curable imprinting adhesive according to claim 2, wherein, Ar is selected from O, S, S(=O), S(=O)2, NH, C(=O), C(=O)O, C 1-30 of an aliphatic hydrocarbon group, C 3-30 of an alicyclic hydrocarbon group or C 6-50 of an aromatic hydrocarbon group; wherein C 1-30 of an aliphatic hydrocarbon group, C 3-30 of an alicyclic hydrocarbon group or C 6-50 of an aromatic hydrocarbon group may be substituted by one or more R', and R' is selected from any one of hydrogen, a hydroxyl group, an ester group, C 1-6 of an alkyl group, and R' is bonded or fused to form a ring with C 3-30 of an alicyclic hydrocarbon group and C 6-50 of an aromatic hydrocarbon group.

4. The ultraviolet curable imprinting adhesive according to claim 2, wherein R4, R5, R6, and R7 are each independently selected from any one of hydrogen, hydroxy, cyano, nitro, C 1-6 alkyl, and C 6-15 aryl.

5. The ultraviolet curable imprinting adhesive according to claim 2, wherein The R1 is selected from an unsubstituted or hydroxyl-substituted C 1-8 aliphatic hydrocarbon group, an unsubstituted or hydroxyl-substituted C 1-8 alkyl ether group; Ar is selected from: O, S, S(=O), S(=O)2, NH, C(=O), C(=O)O, an unsubstituted or hydroxy-substituted C 1-8 aliphatic hydrocarbon group, an unsubstituted or hydroxy-substituted C 3-12 alicyclic hydrocarbon group, an unsubstituted or hydroxy-, ester-, C 1-6 alkyl-substituted or phenyl group.

6. The ultraviolet curable imprinting adhesive according to claim 1, wherein The weight ratio of the acrylate prepolymer A, acrylic resin B, inorganic filler, photoinitiator, and additive is (10 - 100):(0 - 20):(0 - 80):(0.5 - 5):(0.1 - 70).

7. The ultraviolet curable imprinting adhesive according to claim 1, wherein The acrylic resin B is selected from any one or a combination of epoxy (meth)acrylate resins, polyurethane acrylate resins, polyether acrylate resins, and polyester acrylate resins containing at least 1 - 5 photopolymerizable functional groups.

8. The ultraviolet curable imprinting adhesive according to claim 1, wherein The inorganic filler is selected from surface - modified or unmodified inorganic nanoparticles, and the inorganic nanoparticles are selected from any one or a combination of ZrO2, TiO2, ZnS, ZnO, CeO2, Ta2O5, Bi4Ti3O2, Nb2O5, ITO, HfO2, SnO2, MoO3, Sb2O3, Sb2O5, Nd2O3.

9. The ultraviolet curable imprinting adhesive according to claim 1, wherein The photoinitiator is selected from any one or a combination of α - hydroxyketone initiators, benzoin initiators, acylphosphine oxide initiators, acetophenone initiators, morpholinone initiators, naphthalimide photoinitiators, oxime ester photoinitiators, and carbazolyl photoinitiators.

10. The ultraviolet curable imprinting adhesive according to claim 1, wherein The additive includes at least one of a surfactant, a cross - linker, a solvent, an adhesion promoter, and an antifoaming agent.

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