KR20160083604A - Photocurable resin composition for laminating optically functional arrangement - Google Patents

Abstract

The present invention relates to a photocurable resin composition comprising an acrylate oligomer, an acrylate monomer, a methacrylate monomer, an emulsifier, and a photoinitiator for bonding an optical device. The acrylate oligomer and the emulsifier are mixed with a weight ratio of 1:1 to 1:8, wherein the emulsifier includes rosin and terpene with a weight ratio of 1:2 to 1:9. When bonded to an optical device or an optical display device, the photocurable resin composition exhibits excellent wetting properties with a substrate, and has high adhesive strength by being easily bonded. Also, the photocurable resin composition has little moisture absorption of a material after a high temperature immersion experiment, and maintains the bond.

Description

TECHNICAL FIELD [0001] The present invention relates to a photocurable resin composition for bonding an optical device,

The present invention relates to a photo-curable resin composition for bonding an optical device and a display device comprising the photo-curable resin composition.

A liquid crystal display (LCD) is a device for displaying a screen by inserting a liquid crystal between two thin glass substrates. When a voltage is applied through the electrodes connected to the liquid crystal, the molecular arrangement of the liquid crystal is changed, and the passing rate of light passing through the liquid crystal is changed, so that a picture or a color can be displayed. Such a liquid crystal display device is advantageous in that it consumes less power and can be made thinner in a planar view, and is a display device that is currently in the spotlight in various fields. A touch panel mounted on a display body such as an LCD includes a resistive film, a capacitance type, an electromagnetic induction type, and an optical type. On such a touch panel, there is a case where an icon sheet such as a bright plate for designing the exterior appearance or a touch pad position for specifying the appearance is bonded. The capacitive touch panel has a structure in which a transparent electrode is formed on a transparent substrate and a transparent plate is bonded on the transparent electrode.

The bonding material of the above-mentioned screen and touch panel, the bonding of the icon sheet and the touch panel, the bonding of the transparent substrate and the transparent plate on which the transparent electrode is formed in the capacitive touch panel, Or is adhered to one side of the adherend. In the technique using such a pressure-sensitive adhesive, there is a problem that the adhesion is insufficient or bubbles are mixed in the bonding surface. In addition, recently, with the tendency that the thickness of the glass of the display body such as the LCD becomes thin, the LCD is easily deformed due to the external stress. When an optical functional material such as an acrylic plate or a polycarbonate plate is adhered to a display body such as an LCD of the thin film glass or the like, a difference in linear expansion between glass and acrylic or the like is caused in molding of a plastic molding material such as an acrylic plate or polycarbonate Distortion causes a problem in that mold distortion is alleviated and moisture absorption / drying occurs in the heat resistance test and the humidity resistance test, and the surface precision such as dimensional change and warpage is changed.

US 2010-0003425 discloses a method of manufacturing an image display device comprising the steps of placing a photo-curable resin composition between an image display device and a light-transmitting protective component and forming a cured resin layer, Not only the above-mentioned problem can not be solved, but also the bonding effect between the uneven surfaces of the substrate is unsatisfactory and the bonding strength is not sufficient. Various studies are needed to prepare measures for solving the above problems.

It is an object of the present invention to provide a photocurable resin composition for bonding an optical device.

Another object of the present invention is to provide a display device comprising the above-mentioned photocurable resin composition.

Another object of the present invention is to provide a photocurable resin composition comprising an acrylate oligomer, an acrylate monomer, a methacrylate monomer, a softening agent and a photoinitiator, wherein the acrylate oligomer and the softening agent are mixed at a weight ratio of 1: 1 to 1: Wherein the softening agent comprises rosin and terpene, and the weight ratio of the rosin and terpene is 1: 2 to 1: 9.

Other objects and advantages of the present invention will become more apparent from the following detailed description of the invention and claims.

In the following description, for purposes of complete understanding of the present invention, various specific details are set forth, such as specific forms, compositions, and processes, and the like. Reference throughout this specification to "one embodiment" or "embodiment" means that a particular feature, form, composition, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. Accordingly, the appearances of the phrase " in one embodiment "or" the embodiment "in various places throughout this specification are not necessarily indicative of the same embodiment of the present invention.

Where an amount, concentration or other value or parameter is expressed in the form of a range, a preferred range, or a preferred upper limit value and a preferred lower limit value, any range or range obtained by combining any upper limit or preferred value with any lower limit or preferred value Should be understood as being specifically disclosed. Numerous ranges referred to herein are meant to include all integers or fractions included in both the endpoints of the range and also in the range, unless otherwise indicated.

In one embodiment, the photo-curable resin composition comprises an acrylate oligomer, an acrylate monomer, a methacrylate monomer, a softening agent, and a photoinitiator, wherein the acrylate oligomer and the softening agent are contained in a weight ratio of 1: 1 to 1: Wherein the softening agent is rosin and terpene.

Specifically, the softening agent is a tackifier as a non-reactive material. The plasticizing agent is an elasticity-imparting substance, and includes polymers compatible with acrylate oligomers, and oligomers such as polyisoprene, polybutadiene, polyester, phenolic, or xylene oligomers. Preferably two or more of them are mixed together.

Specifically, the weight ratio of the rosin and terpene is 1: 2 to 1: 9, preferably 1: 3 to 1: 7, more preferably 1: 4 to 1: 5 . When the weight ratio of rosin to terpene is 1: 1, the adhesive strength to the substrate is 30 N or less, and the wettability with the substrate is also less than 50%, which causes poor wettability with the substrate. Further, when the weight ratio of rosin and terpene is 1:10, the adhesive force is 50 N or more, which is not a serious problem, but the curing rate is 95% or less and the wettability with the substrate is also less than 50% .

Specifically, the photocurable resin composition includes 100 parts by weight of an acrylate oligomer, 10 to 200 parts by weight of an acrylate monomer, 10 to 200 parts by weight of a methacrylate monomer, 100 to 800 parts by weight of a softening agent, and 10 to 50 parts by weight of a photo initiator do. When the amount of the acrylate monomer and the methacrylate monomer is less than 10 parts by weight, the effect on the refractive index and the curing ratio is poor. If the amount of the softening agent is less than 100 parts by weight, wettability with the substrate is not good, which is a problem. When the photoinitiator is added in an amount of less than 10 parts by weight, the photoinitiator does not act as a photoinitiator, making it difficult to produce a desired composition. Acrylate monomer is added in an amount of more than 200 parts by weight, the methacrylate monomer is added in an amount of more than 200 parts by weight, the softening agent is added in an amount of more than 800 parts by weight, or the photoinitiator is added in an amount of more than 50 parts by weight, There is a problem that the profit on cost is not large.

Preferably 30 to 150 parts by weight of the acrylate monomer and 30 to 150 parts by weight of the methacrylate, more preferably 50 to 100 parts by weight of the acrylate monomer and 50 to 100 parts by weight of the methacrylate.

In one embodiment, the terpene is selected from the group consisting of hemiterpene, monoterpene, sesquiterpene, diterpene, sestaterpene, triterpene, phenolic terpene phenolic terpene, and polyterpene. Commercially available products include, for example, "SylvArES SA 85" from Arizona Chemical Company and "Clearon P115 "

In one embodiment, the rosin is selected from the group consisting of rosin esters, hydrogenated rosin esters, disproportionated rosin esters, dibasic acid modified esters, polymerized rosin esters, polymerized rosin esters, and phenol-modified rosin esters. For example, "I-MARV P100" manufactured by Idemitsu Kosan Co., Ltd., "Pine crystal KE100" manufactured by Arakawa Chemical Co., "Foral ™ 85" manufactured by Eastman Corporation, and "SYLVALITE ™ RE 10L" manufactured by Arizona Chemical Co.,

Specifically, the softening agent is a tackifier as a non-reactive material. The plasticizing agent is an elasticity-imparting substance, and includes polymers compatible with acrylate oligomers, and oligomers such as polyisoprene, polybutadiene, polyester, phenolic, or xylene oligomers. Preferably two or more of them are mixed together.

In one embodiment, the acrylate oligomer is an acrylate oligomer having a backbone of polyisoprene, polybutadiene, or polyurethane.

In one embodiment, the acrylate monomer is selected from the group consisting of stearyl acrylate, lauryl acrylate, 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, tripropylene glycol diacrylate, phenol acrylate, cyclic trimethylol Propyl methacrylate, propyl methacrylate, propyl methacrylate, propyl methacrylate, propyl methacrylate, propyl methacrylate, propyl methacrylate, propyl methacrylate, propyl methacrylate, Acrylate, and hexanediol diacrylate.

In one embodiment, the methacrylate monomer is selected from the group consisting of dicyclopentenyloxyethyl methacrylate, dicyclopentenyl methacrylate, pentamethylpiperidinyl methacrylate, tetramethylpiperidinyl methacrylate, lauryl methacrylate Acrylate, methacrylate, acrylate, acrylate, methacrylate, acrylate, stearyl methacrylate, phenoxyethyl methacrylate, 2-hydroxybutyl methacrylate, 2-hydroxyethyl methacrylate, lauryl-tetradecyl methacrylate, neopentyl glycol dimethacrylate , Tetraethylene glycol dimethacrylate, trimethylolpropane trimethacrylate, methoxypolyethylene glycol methacrylate, 1,4-butanediol dimethacrylate, polyethylene glycol dimethacrylate and benzyl methacrylate. Is at least one selected.

In one embodiment, the photoinitiator is selected from the group consisting of 1- [4- (2-hydroxyethoxy) phenyl] -2-hydroxy-2-methyl-1-propane, benzophenone, 2,2-dimethoxy- 2-methyl-1- [4-methylthio] phenyl] -2-morpholinopropane-1-one, benzo Benzoin isobutyl ether, benzoin isopropyl ether, bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide, 4-methylbenzophenone, 4,4'-bis Diethylaminobenzophenone, 2,4,6-trimethylbenzophenone, 1,4-dibenzoylbenzene, 10-butyl-2-chloroacridone, 2,2'-bis (o-chlorophenyl) 4,5 , 4 ', 5'-tetraphenyl-1,2'-biimidazole, 4-benzoylbiphenyl and 4-benzoyldiphenyl ether.

In one embodiment, the photocurable resin composition further comprises a leveling agent, an adhesion imparting agent, a slipping agent, a surfactant, an antioxidant and a curing accelerator.

Specifically, the leveling agent achieves a flat, smooth, and uniform state when the liquid is coated on the substrate. For example, polyacrylate or alkylpolysiloxane can be used, and it is not limited to the examples.

Specifically, the adhesive agent improves the initial bonding force generated between the surface of the material to be bonded and the adhesive, and improves the bonding force.

Specifically, the slip agent is used to solve the adhesion phenomenon which is caused by mutual cohesion, frictional force, and electrostatic force between the coating layers. The slip agent is a hydrophobic substance, which is poorly compatible with the coating liquid, so that the coating film is transferred to the surface in the process of drying the coating film to form a lubricant layer, and imparts slipperiness, aggressiveness and non-adhesion properties to the dry film . For example, liquid silicone resin and fluororesin slip agents and solid or dispersed slip agents. It is not limited to the slip agent of the above example.

Specifically, a surfactant refers to a compound containing a polar group (hydrophilic) and a non-polar group (hydrophobic) within the same molecule that reduces the surface tension in water. The terms " cleavable surfactant ","degradable surfactant "," switchable surfactant ", or "labile surfactant" Refers to a surfactant that can be modified, preferably disrupted, by any method, such as by binding cleavage or by chemical modification of polar and / or non-polar groups, or both. For example, the polar groups of the surfactants can be converted into less polar or non-polar groups. Examples of degradable surfactants are those in which the polar groups are separated from the nonpolar groups by eliminating the chemical bonds located between the two groups, thereby destroying the interfacial properties and surface activity of the surfactants. Degradable surfactants in this category generally have an oil soluble and water soluble product that can be broken under suitable conditions, such as temperature and / or pH, to produce oil soluble and water soluble products that typically have no interfacial and surface activities compared to the original interfacial molecules One weak chemical bond. Preferably, none of the degraded products have surface-active properties. Degradable surfactants also include those that can undergo chemical modification to result in changes and / or loss of surface-active behavior without fragmentation of the parent molecule. But not limited to, dimerization, isomerization, acylation, alkylation, removal, removal of polar head groups such as, for example, ammonium groups, amines (or salts thereof), alcohols, diols or carboxylic acid groups Or a number of chemical modifications involving oxidation or reduction, or a multiple step process in which several chemical modifications are carried out. The degradable surfactant can be decomposed by hydrolysis without limitation, for example by an appropriate amount of acid or base, fluoride ion, heating, photochemically, e.g. UV light, or several combinations of these methods . Preferably, the decomposition of the surfactant is a non-reversible process. As used herein, the term "irreversible" means that the degradable surfactant is degraded during certain treatment steps, but is not reconstituted or reformed in situ after degradation.

Specifically, the antioxidant includes at least one antioxidant selected from the group consisting of a phenol-based antioxidant and a quinone-based antioxidant. Examples of the phenolic antioxidant include phenothiazine, 2,2-methylene-bis (4-methyl-6-tert-butylphenol), catechol, tert-butylcatechol, (3-tert-butyl-2-hydroxy-5-methylbenzyl) -4-methylphenylacrylate, 2-tert-butyl- Tert-butylphenyl acrylate, 4,4'-butylidenebis (6-tert-butylphenyl) ethyl] -4,6- Butyl 3-methylphenol), 4,4'-thiobis (6-tert-butyl-3-methylphenol), 3,9-bis [2- [3- -5-methylphenyl) propionyloxy] -1,1-dimethylethyl] -2,4,8,10-tetraoxaspiro [5,5] undecane, pentaerythritol tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], octadecyl- 3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate, N, N'- (3,5-di-tert-butyl-4-hydroxyphenyl) propionamide], benzenepropanoic acid, 3,5-bis (1,1-dimethylethyl) -4- -9 side chain alkyl ester, 2,4-dimethyl-6- (1-methylpentadecyl) phenol and diethyl [[3,5-bis (1,1-dimethylethyl) -4- hydroxyphenyl] methyl] A, a "- (mesitylene-2,4,6-tolyl) tri-p-cresol , Calcium diethylbis [[3,5-bis (1,1-dimethylethyl) -4-hydroxyphenyl] methyl] phosphonate, 4,6-bis (octylthiomethyl) Butyl-4-hydroxy-4-hydroxyphenyl) propane, bis (oxyethylene) bis [3- (5-tert- Tris (3,5-di-tert-butyl-4-hydroxybenzyl) -1,3,5-triazine-2,4,6 (1H, 3H , 5H) -thione, 1,3,5-tris [(4-tert-butyl-3-hydroxy-2,6-xylyl) methyl] 6 (1H, 3H, 5H) -triene, A reaction product of N-phenylbenzeneamine and 2,4,6-trimethylpentene, a reaction product of 2,6-di-tert-butyl-4- (4,6-bis (octylthio) 2-ylamino) phenol, picric acid, and citric acid. Examples of the quinone antioxidant include? -Naphthoquinone, 2-methoxy-1,4-naphthoquinone, methylhydroquinone, hydroquinone, hydroquinone monomethyl ether, mono-tert-butylhydroquinone, -tet-butylhydroquinone, p-benzoquinone, 2,5-diphenyl-p-benzoquinone and 2,5-di-tert-butyl-p-benzoquinone. However, the present invention is not limited to the above examples, and antioxidants usable in the art can be used.

Specifically, examples of the curing accelerator include tetraphenylphosphonium bromide, methyltriphenylphosphonium bromide, ethyltriphenylphosphonium bromide, n-butyltriphenylphosphonium bromide, and mixtures thereof. no. If necessary, at least one selected from imidazoles such as methylimidazole, organic phosphorus compounds such as triphenylphosphine and triphenylphosphine, organic metal salts, quaternary ammonium salts, and derivatives thereof may be further added with a curing accelerator . However, the present invention is not limited to the above examples, and curing accelerators usable in the art can be used.

In one embodiment, the photo-curable resin composition has a photo-curability (refractive index) of 1.45 to 1.55 at 25 占 폚, an adhesive force (N) of 40 to 70 N, a curing rate of 95 to 100%, and a wettability of 50 to 100% Resin composition. More preferably, the refractive index is 1.49 to 1.52, the adhesive force is 43 to 52 N, the curing rate is 97 to 100%, and the wettability is 90 to 100%.

In one embodiment, the present invention relates to a display device comprising the photocurable resin composition.

Specifically, the composition of the present invention can be used to combine or laminate various substrates, such as various components, in a display device, in particular for assembling transparent components or for bonding or laminating transparent substrates, and for bonding or laminating transparent and opaque substrates have. For example, the transparent substrate may be glass or a transparent plastic substrate, and the opaque substrate may be a metal, an opaque plastic, a ceramic, a stone, a leather or a wooden substrate. Most preferably, the composition of the present invention is used to laminate a glass substrate or to bond two organic substrates.

The present invention relates to a photo-curable resin composition for bonding an optical device or an optical display device, and has good wettability with a base material at the time of bonding an optical device or an optical display device, easy adhesion and easy adhesion, and high adhesion. The present invention also provides a photocurable resin composition having properties that the moisture absorption of the material is small and the bonding is maintained even after the high temperature immersion test.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary view showing a case where a polarizing film is used between two slide glasses. FIG.
Fig. 2 is an illustrative view showing the case where the adhesive composition is used to adhere between two slide glasses. Fig.
Fig. 3 is an exemplary diagram showing a case where two polarizing films and an adhesive composition are used to adhere two glass slides. Fig.

Hereinafter, the present invention will be described in more detail with reference to Examples. It will be apparent to those skilled in the art that these embodiments are only for describing the present invention in more detail and that the scope of the present invention is not limited by these embodiments in accordance with the gist of the present invention .

Manufacturing example

Preparation of photocurable composition

22 parts by weight of polyisoprene oligomer, 11 parts by weight of phenoxyethylpentacrylate, 44 parts by weight of liquid polybutadiene, 20 parts by weight of liquid polyisoprene, 2 parts by weight of 2,4,6-trimethylbenzoyl phenyl ethoxyphosphine oxide and 1 part by weight of 1 -Hydroxycyclohexylphenyl ketone were added in the same amount, and the other components were compounded in the parts by weight shown in Table 2, followed by stirring with a mixer at 500 to 3000 rpm. After stirring for 3 to 6 hours, defoaming was carried out for 30 minutes to 1 hour using a deaerator to obtain the compositions of Examples 1 to 24 and Comparative Examples 1 to 12. Manufacturers and product names of the manufactured components are shown in Table 1 below.

Product Name division manufacturer product name UC-1 Polyisoprene oligomer kuraray UC201 PO Phenoxyethyl methacrylate HS Chemtron PO LA Lauryl acrylate HS Chemtron LA Polyoil 110 Liquid polybutadiene evonic Polyvest 110 L-LIR Liquid polyisoprene kuraray LIR-30 Ricon 130 Liquid polybutadiene Cray Valley Ricon 130 SA85 Terpen arizona chem SylvArES®SA 85 P115 Terpen yasuhara Clearon P115 MARV P100 Hydrocarbon resin idemitsu I-MARV P100 P90 Hydrocarbon resin Arakawa Chemical Arkon P90 KE100 Hydrogenated rosin ester Arakawa Chemical Pine crystal KE100 Foral ™ 85 Hydrogenated rosin ester eastman Foral ™ 85 SYLVALITE ™ RE 10L Hydrogenated rosin ester arizona chem SYLVALITE ™ RE 10L TPO 2,4,6-trimethylbenzoyl phenyl ethoxyphosphine oxide Ciba Darocur® TPO Irgacure 184 1-hydroxycyclohexyl phenyl ketone Ciba Irgacure 184

Phenolic terpene
(SA85) Phenolic terpene
(P115) Hydrogenated rosin ester
(KE100) Hydrogenated rosin ester
(Foral ™ 85) Hydrogenated rosin ester
(SYLVALITE ™ RE 10L) Example 1 30 10 Example 2 30 10 Example 3 40 10 Example 4 40 10 Example 5 50 10 Example 6 50 10 Example 7 70 10 Example 8 70 10 Example 9 30 10 Example 10 30 10 Example 11 40 10 Example 12 40 10 Example 13 50 10 Example 14 50 10 Example 15 70 10 Example 16 70 10 Example 17 30 10 Example 18 30 10 Example 19 40 10 Example 20 40 10 Example 21 50 10 Example 22 50 10 Example 23 70 10 Example 24 70 10 Comparative Example 1 10 10 Comparative Example 2 10 10 Comparative Example 3 10 10 Comparative Example 4 10 10 Comparative Example 5 10 10 Comparative Example 6 10 10 Comparative Example 7 50 5 Comparative Example 8 50 5 Comparative Example 9 50 5 Comparative Example 10 50 5 Comparative Example 11 50 5 Comparative Example 12 50 5

Test Example

Evaluation of physical properties of photocurable composition

Refractive index Adhesion (N) Curing rate (% @ 2J) Wettability with substrate Example 1 1.51 46.5 97% 94% Example 2 1.52 48 97% 93% Example 3 1.51 49 99% 100% Example 4 1.51 50.2 98% 100% Example 5 1.5 50.2 100% 100% Example 6 1.5 51 98% 100% Example 7 1.51 46.5 93% 75% Example 8 1.51 47 90% 80% Example 9 1.52 44.6 97% 93% Example 10 1.51 43.7 98% 92% Example 11 1.51 51.5 98% 100% Example 12 1.5 50.5 97% 100% Example 13 1.51 48.1 100% 100% Example 14 1.51 51.3 100% 100% Example 15 1.52 50.5 91% 85% Example 16 1.5 52.7 93% 84.5% Example 17 1.5 45.8 95% 94% Example 18 1.5 45.1 96% 93% Example 19 1.5 49.8 99% 100% Example 20 1.51 49.7 100% 100% Example 21 1.52 50.6 98% 100% Example 22 1.5 51.5 100% 100% Example 23 1.49 50.9 89% 75% Example 24 1.49 51.7 92% 80% Comparative Example 1 1.52 28.1 97% 41% Comparative Example 2 1.53 30.2 95% 25% Comparative Example 3 1.52 27 96% 36% Comparative Example 4 1.52 28.4 96% 23% Comparative Example 5 1.53 29.2 96% 25% Comparative Example 6 1.53 27 97% 24% Comparative Example 7 1.52 50.3 93% 21% Comparative Example 8 1.53 52 94% 22.5% Comparative Example 9 1.52 52.1 92% 24% Comparative Example 10 1.53 52 93% 24.3% Comparative Example 11 1.53 51.6 94% 33.2% Comparative Example 12 1.53 50.5 93% 38%

(1) Measurement of refractive index

(ATAGO, NAR-1T solid) at 25 占 폚.

In Examples 1 to 21, refractive indices of 1.49 to 1.52 were shown, but in Comparative Examples, refractive indices of 1.52 to 1.53 were exhibited.

(2) Adhesive strength measurement

And measured with a 1 kN load cell using an Autograph (AGS-X) UTM instrument. The specimens were coated on a slide glass at 100 to 300 micrometers and then measured at 10 mm / min. The curing was carried out by irradiating light with an amount of 3000 mJ / cm ² using an electrodeless curing machine D lamp to prepare a sample.

In Comparative Examples 1 to 6 prepared by adding phenolic terpene and hydrogenated rosin ester in a ratio of 1: 1, the adhesive force (N) was 27 to 30, indicating that the adhesive strength was weak. However, in the other Examples and Comparative Examples The adhesive strength was 43 N or more.

(3) Measurement of hardening rate

Cure rate was then coated with a 100 to 300 microseconds on a slide glass, using an electrodeless lamp D gyeonghwagi 2000mJ / cm ² curing were analyzed using Thermo (Nicolet iS5).

Except for Examples 7, 8, 15, 16, 23, and 24, the curing rate of the other examples exhibited a curing rate of 95% or more, and Comparative Examples 1 to 6 showed a curing rate of 95% , Phenolic terpene and hydrogenated rosin ester in the ratio of 1:10, the curing rate of Comparative Examples 7 to 12 was 95% or less.

(4) wettability with substrate

Coated on a slide glass at a dose of 100 to 300 micrograms, irradiated with a light quantity of 100 to 1000 mJ using a surface hardener, and then a slide glass having a polarizing film attached thereto is adhered to the coated surface to visually confirm bubbling or lifting.

All of the examples show wettability of 50% or more, but in the case of the comparative example, phenolic terpene and hydrogenated rosin ester are mixed at a ratio of 1: 1, or phenolic terpene and hydrogenated rosin ester are mixed at a ratio of 1:10 In one case, wettability was less than 50%.

1: Slide glass
2: polarizing film
3: Adhesive composition

Claims (14)

A photocurable resin composition comprising an acrylate oligomer, an acrylate monomer, a methacrylate monomer, a softener, and a photoinitiator,
The acrylate oligomer and the softening agent are contained in a weight ratio of 1: 1 to 1: 8,
Wherein the softening agent comprises rosin and terpene,
Wherein the weight ratio of the rosin and the terpene is 1: 2 to 1: 9.
The method according to claim 1,
Wherein the weight ratio of terpene and rosin is 1: 3 to 1: 7.
The method according to claim 1,
The photo-curable resin composition is prepared by mixing 100 parts by weight of an acrylate oligomer, 10 to 200 parts by weight of an acrylate monomer, 10 to 200 parts by weight of a methacrylate monomer, 100 to 800 parts by weight of a softening agent and 10 to 50 parts by weight of a photo- Resin composition.
The method of claim 3,
30 to 150 parts by weight of the acrylate monomer and 30 to 150 parts by weight of methacrylate.
The method of claim 3,
50 to 100 parts by weight of the acrylate monomer and 50 to 100 parts by weight of methacrylate.
The method according to claim 1,
The terpenes may be selected from the group consisting of hemiterpene, monoterpene, sesquiterpene, diterpene, sestaterpene, triterpene, phenolic terpene and poly Wherein the photocurable resin composition is at least one compound selected from the group consisting of polytetrafluoroethylene and polyterpene.
The method according to claim 1,
The rosin may be selected from the group consisting of rosin esters, hydrogenated rosin esters, disproportionated rosin esters, dibasic acid modified esters, polymerized rosin esters, And a phenol-modified rosin ester. The photocurable resin composition according to claim 1,
The method according to claim 1,
Wherein the acrylate oligomer is an acrylate oligomer having a skeleton of polyisoprene, polybutadiene or polyurethane.
The method according to claim 1,
Wherein the acrylate monomer is selected from the group consisting of stearyl acrylate, lauryl acrylate, 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, tripropylene glycol diacrylate, phenol acrylate, cyclic trimethylolpropane foam acrylate, Benzyl acrylate, nonanediol diacrylate, phenoxyethyl acrylate, hexanediol acrylate, hexanediol acrylate, hexanediol acrylate, isobutyl acrylate, Acrylate, and diacrylate.
The method according to claim 1,
The methacrylate monomer is preferably selected from the group consisting of dicyclopentenyloxyethyl methacrylate, dicyclopentenyl methacrylate, pentamethylpiperidinyl methacrylate, tetramethylpiperidinyl methacrylate, lauryl methacrylate, stearyl Methacrylate, phenoxyethyl methacrylate, 2-hydroxybutyl methacrylate, 2-hydroxyethyl methacrylate, lauryl-tetradecyl methacrylate, neopentyl glycol dimethacrylate, tetraethylene glycol di At least one compound selected from the group consisting of methacrylate, trimethylolpropane trimethacrylate, methoxypolyethylene glycol methacrylate, 1,4-butanediol dimethacrylate, polyethylene glycol dimethacrylate and benzyl methacrylate Based on the total weight of the photocurable resin composition.
The method according to claim 1,
The photoinitiator may be selected from the group consisting of 1- [4- (2-hydroxyethoxy) phenyl] -2-hydroxy-2-methyl-1-propane, benzophenone, 2,2-dimethoxy- Methyl-1- [4-methylthio] phenyl] -2-morpholinopropane-1-one, benzoin methyl ether, benzo Benzyl isobutyl ether, benzoin isopropyl ether, bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide, 4-methylbenzophenone, 4,4'-bisdiethylaminobenzophenone , 2,4,6-trimethylbenzophenone, 1,4-dibenzoylbenzene, 10-butyl-2-chloroacridone, 2,2'-bis (o- chlorophenyl) -Tetraphenyl-1,2'-biimidazole, 4-benzoylbiphenyl, and 4-benzoyl diphenyl ether.
The method according to claim 1,
Wherein the photocurable resin composition further comprises a leveling agent, an adhesion imparting agent, a slipping agent, a surfactant, an antioxidant, and a curing accelerator.
The method according to claim 1,
Wherein the photo-curable resin composition has a refractive index of 1.45 to 1.55 at 25 占 폚, an adhesive force (N) of 40 to 70 N, a curing rate of 95 to 100%, and a wettability of 50 to 100%.
A display device comprising the photocurable resin composition according to any one of claims 1 to 13.

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