Polymer composition, encapsulation material, and display device having excellent storage stability

Abstract

One embodiment of the present disclosure provides a polymerization composition comprising: a first monomer having an acryloyl group; a second monomer having an acryloyl group and having a viscosity different from that of the first monomer; and a polymerization initiator, wherein the storage change index (ISV) of the polymerization composition is 18 or less.

Description

Technical Field

[0001] The present disclosure relates to a polymeric composition having excellent storage stability, an encapsulation material including an organic film formed using the polymeric composition, and a display device including the encapsulation material. Background Art

[0002] A light-emitting device is a device capable of emitting light. Among light-emitting devices, an organic light-emitting device (OLED) is used in various fields due to its advantages such as a wide viewing angle, excellent contrast characteristics, fast response time, and low power consumption.

[0003] An organic light-emitting device deteriorates when it comes into contact with oxygen or moisture, and thus, its lifespan is shortened. Therefore, in order to prevent the deterioration of an organic light-emitting device, an encapsulation material for protecting the organic light-emitting device can be used. The encapsulation material for protecting the organic light-emitting device may include an organic film, and the organic film may be formed from a polymeric composition. However, when the polymeric composition is easily denatured, the performance of the organic film formed from the polymeric composition and the encapsulation material including the organic film cannot be ensured. In order for the encapsulation material to have properties related to stable oxygen or moisture barrier, the polymeric composition serving as a raw material of the organic film constituting the encapsulation material needs to have excellent stability. Summary of the Invention

[0004] Technical Problem

[0005] One aspect of the present disclosure is to provide a polymeric composition that can be used to manufacture an encapsulation material.

[0006] Another aspect of the present disclosure is to provide a polymeric composition having excellent stability and not deteriorating even after long-term storage.

[0007] Still another aspect of the present disclosure is to provide an encapsulation material including an organic film formed using a polymeric composition having excellent storage stability; and a display device including the encapsulation material.

[0008] Technical Solution

[0009] According to one aspect of the present disclosure, there is provided a polymerization composition comprising: a first monomer having an acryloyl group; a second monomer having an acryloyl group and having a viscosity different from that of the first monomer; and a polymerization initiator, wherein the polymerization composition has a first flexibility (Aa), a first viscosity (Ab), a first degree of curing (Ac), a first shrinkage rate (Ad), and a first surface tension (Ae) before a storage test, the polymerization composition has a second flexibility (Ba), a second viscosity (Bb), a second degree of curing (Bc), a second shrinkage rate (Bd), and a second surface tension (Be) after being stored in a sealed state at room temperature (25 °C ± 10 °C) for one year, the polymerization composition has a third flexibility (Ca), a third viscosity (Cb), a third degree of curing (Cc), a third shrinkage rate (Cd), and a third surface tension (Ce) after being stored in a sealed state at 50 °C for one year, and the storage variation index (ISV) of the polymerization composition is 18 or less, wherein the storage variation index (ISV) is obtained according to the following Equation 1.

[0010] [Equation 1]

[0011] ISV = (|Aa - Ba| / Aa) * 100 + (|Aa - Ca| / Aa) * 100 + (|Ab - Bb| / Ab) * 100 + (|Ab - Cb| / Ab) * 100 + (|Ac - Bc| / Ac) * 100 + (|Ac - Cc| / Aa) * 100 + (|Ad - Bd| / Ad) * 100 + (|Ad - Cd| / Ad) * 100 + (|Ae - Be| / Ae) * 100 + (|Ae - Ce| / Ae) * 100

[0012] According to another aspect of the present disclosure, there is provided an encapsulating material including an organic film formed from the polymerization composition.

[0013] According to another aspect of the present disclosure, there is provided a display device including the encapsulating material.

[0014] Advantageous Effects

[0015] The polymerization composition according to an embodiment of the present disclosure has a low storage variation index, thereby exhibiting excellent storage stability, and thus, its physical properties are maintained even during long-term storage. Therefore, when using the polymerization composition according to an embodiment of the present disclosure, an encapsulating material having excellent moisture and oxygen barrier properties can be manufactured regardless of the storage time length of the polymerization composition.

[0016] In addition, a display device including an encapsulating material including an organic film formed from the polymerization composition according to an embodiment of the present disclosure has excellent tolerance to moisture and oxygen, and thus can maintain excellent display quality for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a cross-sectional view showing a part of a display device according to an exemplary embodiment of the present disclosure;

[0018] Figure 2 is a graph showing the absorbance of a polymerization initiator according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0019] It should be understood that the terms used herein are provided only for describing specific embodiments and do not limit the scope of the present invention. Unless otherwise mentioned, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art.

[0020] In addition, the terms or words used in this specification and the following claims are intended to be understood as having a meaning and concept consistent with the technical concept of the present disclosure as described in this specification based on the concept that the inventor can appropriately define the terms in order to best describe the invention, and are not limited to the conventional or dictionary meanings.

[0021] The shapes, sizes, ratios, angles, and numbers disclosed in the drawings for describing the embodiments of the present disclosure are only examples, and the present disclosure is not limited to the details shown.

[0022] In the following description, when the detailed description of related known functions or structures is determined to unnecessarily obscure the gist of the present disclosure, the detailed description will be omitted.

[0023] Figure 1 is a cross-sectional view showing a part of a display device 100 according to an embodiment.

[0024] Referring to Figure 1 , a display device 100 according to an embodiment of the present disclosure includes: a substrate 510, a thin film transistor TFT on the substrate 510, and an organic light emitting device 570 connected to the thin film transistor TFT. The organic light emitting device 570 includes: a first electrode 571, an organic light emitting layer 572 on the first electrode 571, and a second electrode 573 on the organic light emitting layer 572. Figure 1 The display device 100 shown in

[0025] is an organic light emitting display device including the organic light emitting device 570.

[0026] The thin film transistor TFT is disposed on the substrate 510. The thin film transistor TFT includes: a semiconductor layer 520; a gate electrode 530 insulated from the semiconductor layer 520 and at least partially overlapping the semiconductor layer 520; a source electrode 541 connected to the semiconductor layer 520; and a drain electrode 542 spaced apart from the source electrode 541 and connected to the semiconductor layer 520.

[0027] Referring Figure 1 , a gate insulating layer 535 is disposed between the gate electrode 530 and the semiconductor layer 520. An interlayer insulating layer 551 may be disposed on the gate electrode 530, and the source electrode 541 and the drain electrode 542 may be disposed on the interlayer insulating layer 551.

[0028] A planarization layer 552 is disposed on the thin film transistor TFT to flatten the top of the thin film transistor TFT.

[0029] A first electrode 571 is disposed on the planarization layer 552. The first electrode 571 is connected to the thin film transistor TFT through a contact hole formed in the planarization layer 552.

[0030] A bank layer 580 is disposed on a part of the first electrode 571 and on the planarization layer 552 to define a pixel region or a light emitting region. For example, the bank layer 580 may be disposed in a matrix form at the boundaries between a plurality of pixels to define respective pixel regions.

[0031] An organic light emitting layer 572 is disposed on the first electrode 571. The organic light emitting layer 572 may also be disposed on the bank layer 580. The organic light emitting layer 572 may include one light emitting layer or two or more light emitting layers stacked in the vertical direction. Light of any one of red, green, and blue colors may be emitted from the organic light emitting layer 572, and white light may be emitted therefrom.

[0032] A second electrode 573 is disposed on the organic light emitting layer 572.

[0033] The first electrode 571, the organic light emitting layer 572, and the second electrode 573 may be stacked to form an organic light emitting device 570.

[0034] Although not shown, when the organic light emitting layer 572 emits white light, each pixel may include a color filter for filtering white light emitted from the organic light emitting layer 572 based on a specific wavelength. The color filter is formed in the optical path.

[0035] An encapsulation material 590 may be disposed on the second electrode 573. The encapsulation material 590 may be formed as a multi-layer film. The encapsulation material 590 formed as a multi-layer film is also referred to as a "thin film encapsulation layer". Referring Figure 1, the encapsulation material 590 may include at least one organic film 592 and at least two inorganic films 591 and 593, and the at least one organic film 592 and the at least two inorganic films 591 and 593 may be alternately arranged.

[0036] The encapsulation material 590 may cover the display area of the display device 100 and may extend outside the display area. The encapsulation material 590 may include: a first inorganic film 591, an organic film 592, and a second inorganic film 593.

[0037] The first inorganic film 591 covers the second electrode 573. The first inorganic film 591 may include at least one of ceramics, metal oxides, metal nitrides, metal carbides, metal oxynitrides, silicon oxides, silicon nitrides, and silicon oxynitrides.

[0038] The organic film 592 is disposed on the first inorganic film 591. The upper surface of the organic film 592 may be a flat surface. Specifically, the organic film 592 may have a substantially flat upper surface in the area corresponding to the display area. The organic film 592 may include at least one material selected from acrylic resins, methacrylic resins, polyesters, polyethylene, polypropylene, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyoxymethylene, polyarylate, and hexamethyldisiloxane.

[0039] According to an embodiment of the present disclosure, the organic film 592 may be formed of the polymerization composition. More specifically, the organic film 592 may be formed by polymerization and curing of the polymerization composition.

[0040] The second inorganic film 593 covers the organic film 592. The second inorganic film 593 may include at least one of ceramics, metal oxides, metal nitrides, metal carbides, metal oxynitrides, silicon oxides, silicon nitrides, and silicon oxynitrides.

[0041] According to an embodiment of the present disclosure, since the encapsulation material 590 has a multilayer structure including the first inorganic film 591, the organic film 592, and the second inorganic film 593, even if cracks are formed in the encapsulation material 590, the cracks will not be continuous between the first inorganic film 591 and the organic film 592, or between the organic film 592 and the second inorganic film 593. Therefore, the formation of a path for moisture or oxygen from the outside to penetrate into the organic light-emitting device 570 can be prevented or minimized.

[0042] Referring to Figure 1 , the touch panel 110 may be disposed on the encapsulation material 590.

[0043] One embodiment of the present disclosure provides a polymerization composition. The polymerization composition according to one embodiment of the present disclosure can be used to fabricate the organic film 592 included in the encapsulation material 590 of the display device 100.

[0044] The polymerization composition according to one embodiment of the present disclosure includes a first monomer, a second monomer, and a polymerization initiator.

[0045] According to one embodiment of the present disclosure, the first monomer and the second monomer may be polymerizable. For example, the first monomer and the second monomer may be photopolymerizable. When irradiated with light, the first monomer and the second monomer can be polymerized.

[0046] In addition, the first monomer and the second monomer may be photocurable. When irradiated with light, the first monomer and the second monomer can be cured.

[0047] According to one embodiment of the present disclosure, the first monomer may have an acryloyl group and may be represented by the following Formula 1.

[0048] [Formula 1]

[0049] C i H j O k

[0050] In Formula 1, i is an integer from 10 to 28, j is an integer from 10 to 54, k is an integer from 1 to 10, and i / k is 2 or more.

[0051] More specifically, i may be an integer from 10 to 25, j may be an integer from 10 to 40, and k may be an integer from 1 to 8.

[0052] In addition, according to one embodiment of the present disclosure, i / k may be in the range of 2 to 8, or preferably in the range of 2 to 5.5. For example, i and k in Formula 1 may satisfy the relationship of 2 ≤ i / k, 2 ≤ i / k ≤ 8, or 2 ≤ i / k ≤ 5.5.

[0053] The viscosity of the first monomer at 25 °C is 1 cPs to 100 cPs. The first monomer has excellent fluidity due to its low viscosity. Therefore, the processability of the polymerization composition containing the first monomer is improved. When the viscosity of the first monomer at 25 °C is less than 1 cPs, it is difficult to prepare and store the monomer, and when the viscosity is higher than 100 cPs, there is a problem that it is difficult to prepare the polymerization composition for the inkjet process.

[0054] According to one embodiment of the present disclosure, the viscosity can be measured according to the method based on ASTM D 2196 by setting the torque of the DV2T viscometer from Brookfield to 50% and measuring at 25 °C. The same applies hereinafter.

[0055] According to an embodiment of the present disclosure, the viscosity of the first monomer at 25 °C can be 1 cPs to 100 cPs, 1 cPs to 50 cPs, 5 cPs to 20 cPs, 1 cPs to 30 cPs, or 23 cPs or less. When the viscosity of the first monomer falls within the above range, the polymerization composition can be cured smoothly.

[0056] The second monomer has an acryloyl group and has a viscosity different from that of the first monomer. The second monomer can be represented by the following formula 2.

[0057] [Formula 2]

[0058] C p H q O r

[0059] In formula 2, p is an integer from 10 to 25, q is an integer from 10 to 40, r is an integer from 1 to 6, and p / r is 2 or more.

[0060] More specifically, p can be an integer from 10 to 20, q can be an integer from 15 to 30, and r can be an integer from 1 to 5.

[0061] In addition, according to an embodiment of the present disclosure, p / r can be 2 to 8, or preferably 2 to 6. For example, p and r in formula 1 can satisfy the relationship of 2 ≤ p / r, 2 ≤ p / r ≤ 8, or 2 ≤ p / r ≤ 6.

[0062] According to an embodiment of the present disclosure, at least one of "2 ≤ i / k ≤ 8" and "2 ≤ p / r ≤ 8" can be satisfied.

[0063] The viscosity of the second monomer at 25 °C is greater than 100 cPs and less than or equal to 500 cPs. When the viscosity of the second monomer at 25 °C is 100 cPs or less, the moisture or oxygen barrier efficiency of the organic film manufactured using the polymerization composition may be reduced. On the other hand, when the viscosity of the second monomer at 25 °C is higher than 500 cPs, there are problems that it is difficult to prepare the polymerization composition and the inkjet process using the polymerization composition is not easy.

[0064] The second monomer with a high viscosity can improve the stability of the polymerization composition, especially the storage stability, improve the stability of the organic film formed from the polymerization composition, and improve the moisture or oxygen barrier efficiency of the organic film.

[0065] The viscosity of the second monomer at 25 °C can be greater than 100 cPs and less than or equal to 200 cPs, can be from 120 cPs to 200 cPs, can be greater than 100 cPs and less than or equal to 150 cPs, and can be from 110 cPs to 140 cPs.

[0066] According to one embodiment of the present disclosure, the first monomer having a low viscosity can improve the processability and polymerizability of the polymerization composition, and the second monomer having a high viscosity can improve the stability of the polymerization composition and improve the moisture and oxygen barrier properties of the organic film made from the polymerization composition.

[0067] According to one embodiment of the present disclosure, based on 100 parts by weight of the total of the first monomer and the second monomer, the content of the first monomer can be from 50 parts by weight to 80 parts by weight, and the content of the second monomer can be from 20 parts by weight to 50 parts by weight. When the content of the first monomer is less than 50 parts by weight based on 100 parts by weight of the total weight of the first monomer and the second monomer, due to the influence of the second monomer having a high viscosity, the polymerization rate of the polymerization monomer will decrease, and it will be difficult to control the viscosity of the polymerization monomer. On the other hand, when the content of the first monomer is higher than 80 parts by weight and the content of the second monomer is lower than 20 parts by weight, the storage stability of the polymerization monomer will deteriorate and it will be difficult to control the viscosity of the polymerization composition.

[0068] According to one embodiment of the present disclosure, the first monomer having a viscosity of 1 cPs to 100 cPs at 25 °C and the second monomer having a viscosity greater than 100 cPs and less than or equal to 500 cPs at 25 °C are mixed in a ratio of 5:5 to 8:2. In this case, photocuring can be carried out well, and thus a cured film can be formed.

[0069] According to one embodiment of the present disclosure, the acryloyl group can have a “-C=O” group and a “-C=C-” group. According to one embodiment of the present disclosure, the acryloyl group can be a moiety represented by the following formula 3.

[0070] [Formula 3]

[0071]

[0072] According to one embodiment of the present disclosure, each of the first monomer and the second monomer can have an acryloyl group represented by the following formula 4.

[0073] [Formula 4]

[0074]

[0075] For example, the first monomer and the second monomer having an acryloyl group may each be an acrylate compound. According to one embodiment of the present disclosure, the first monomer and the second monomer may each include an acrylate compound.

[0076] According to one embodiment of the present disclosure, the acrylate compound may have a moiety represented by the following formula 5.

[0077] [Formula 5]

[0078]

[0079] According to one embodiment of the present disclosure, the first monomer and the second monomer may each have an acrylate group represented by the following formula 6.

[0080] [Formula 6]

[0081]

[0082] According to one embodiment of the present disclosure, the first monomer and the second monomer may each be a monofunctional (meth)acrylate of a monohydric alcohol or a polyhydric alcohol, or a polyfunctional (meth)acrylate of a monohydric alcohol or a polyhydric alcohol. Here, the monohydric alcohol or the polyhydric alcohol may include an aliphatic group and an aromatic group. The aliphatic group may include a side chain, a branched chain, or a cyclic hydrocarbon compound group.

[0083] In addition, the first monomer and the second monomer may each be a monofunctional polymerizable monomer or a polyfunctional polymerizable monomer.

[0084] The first monomer may include, for example, at least one of dodecanediol di(meth)acrylate, tetraethylene glycol di(meth)acrylate, and benzyl (meth)acrylate. However, one embodiment of the present disclosure is not limited thereto, and other monomers satisfying the requirements of formula 1 may also be used as the first monomer.

[0085] The second monomer may include, for example, at least one of phenylphenoxyethyl (meth)acrylate and tricyclodecane dimethanol di(meth)acrylate. However, one embodiment of the present disclosure is not limited thereto, and other monomers satisfying the requirements of formula 2 may also be used as the second monomer.

[0086] In addition, 2-decyl-1-tetradecyl (meth)acrylate, stearyl (meth)acrylate, 2-octyldodecyl (meth)acrylate, 2-hexyldecyl (meth)acrylate, isostearyl (meth)acrylate, lauryl (meth)acrylate, tridecyl (meth)acrylate, etc. may be used as needed.

[0087] According to an embodiment of the present disclosure, at least one of the first monomer and the second monomer is in a liquid phase. According to an embodiment of the present disclosure, both the first monomer and the second monomer can be in a liquid phase, and depending on the temperature, either the first monomer or the second monomer can be in a solid phase.

[0088] According to an embodiment of the present disclosure, based on the total weight of 100 parts by weight of the first monomer and the second monomer, the amount of the polymerization initiator can be 5 parts by weight or less. More specifically, based on the total weight of 100 parts by weight of the first monomer and the second monomer, the amount of the polymerization initiator can be from 1 part by weight to 5 parts by weight or from 3 parts by weight to 5 parts by weight.

[0089] The polymerization initiator according to an embodiment of the present disclosure can be, for example, a photoinitiator. The polymerization initiator according to an embodiment of the present disclosure can absorb light to generate free radicals.

[0090] Specifically, the polymerization initiator can absorb light energy to generate free radicals and provide the free radicals to the acryloyl groups contained in each of the first monomer and the second monomer. According to an embodiment of the present disclosure, when irradiated with light, the polymerization composition can be polymerized and cured by free radical polymerization.

[0091] The polymerization initiator can contain, for example, a heteroatom in the molecule and can also contain an aryl group.

[0092] According to an embodiment of the present disclosure, the polymerization initiator has at least one light absorption peak at a wavelength of 500 nm or less. More specifically, the polymerization initiator can have a light absorption peak in the wavelength range of 380 nm to 410 nm. According to an embodiment of the present disclosure, such a polymerization initiator can polymerize the polymerization composition by irradiating light having a wavelength in the visible light region.

[0093] According to an embodiment of the present disclosure, as the polymerization initiator, hydroxyketone photoinitiators such as 1-hydroxycyclohexyl phenyl ketone (Irgacure 184) can be used; aminoketone photoinitiators such as 2-benzyl-2-(dimethylamino)-1-[4-(4-morpholinyl)phenyl]-1-butanone (Irgacure 369) or α-aminophenylacetone (Irgacure 907); benzyl dimethyl ketal photoinitiators such as benzyl dimethyl ketal (Irgacure-651); bisacylphosphine photoinitiators such as phenylbis(2,4,6-trimethylbenzoyl) (Irgacure 819); or monoacylphosphine photoinitiators such as 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO).

[0094] Specifically, according to one embodiment of the present disclosure, the polymerization initiator may include at least one of 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO), bis(2,4,6-trimethylbenzoyl)-phenylphosphine oxide, and 2,4,6-trimethylbenzoyl epoxyphenylphosphine oxide.

[0095] Figure 2 It is a graph showing the absorbance of the polymerization initiator according to one embodiment of the present disclosure. Specifically, Figure 2 It is a graph showing the absorbance of 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO) as a polymerization initiator.

[0096] According to one embodiment of the present disclosure, the polymerization composition may further contain at least one additive selected from heat stabilizers, UV stabilizers, and antioxidants. In addition, the polymerization composition may further contain additives such as surfactants, adhesion aids, stabilizers, adhesion promoters, curing promoters, thermal polymerization inhibitors, dispersants, plasticizers, fillers, or defoamers, as long as they do not adversely affect the polymerization composition.

[0097] When using additives, based on the total weight of 100 parts by weight of the first monomer and the second monomer, the amount of the additive may be from 0.001 part by weight to 10 parts by weight.

[0098] The polymerization composition according to one embodiment of the present disclosure does not contain siloxane monomers. When the polymerization composition contains siloxane monomers, it is not easy to control the viscosity of the polymerization composition, and when stored for a long time of about one year, or stored under harsh conditions, the polymerization composition may denature or its physical properties may deteriorate. Therefore, the stability of the organic film made from the polymerization composition containing silane monomers may be reduced.

[0099] In addition, when using siloxane monomers, siloxane degassing may occur at high temperatures. Therefore, when using the polymerization composition containing siloxane monomers as an encapsulating material for an organic light-emitting device, the organic light-emitting device may be damaged.

[0100] According to one embodiment of the present disclosure, the polymerization composition may be prepared as a solvent-free composition. In one embodiment of the present disclosure, the term "solvent-free composition" refers to a composition that does not contain a solvent, for example, an organic solvent or an aqueous solvent.

[0101] Compared with the solvent-containing composition, the solvent-free composition can avoid the solvent drying process, thereby improving the process efficiency. In addition, when using the solvent-free composition, bubbles are not formed due to the solvent, so the deterioration of the function of the encapsulating material can be prevented.

[0102] The polymeric composition according to an embodiment of the present disclosure can be applied to inkjet printing. A multi-head device including a plurality of nozzles can be used for inkjet printing. In order to make the polymeric composition suitable for inkjet printing, the viscosity and surface tension of the polymeric composition can be adjusted.

[0103] When the viscosity of the polymeric composition is higher than 30 cPs, it is difficult for the polymeric composition to be discharged from the inkjet nozzle. When the viscosity is less than 1 cPs, it is difficult to form an organic film with an appropriate thickness due to its excessive fluidity. Therefore, the polymeric composition according to an embodiment of the present disclosure can have a viscosity of 1 cPs to 30 cPs.

[0104] According to an embodiment of the present disclosure, in order to make the polymeric composition easily discharged from the inkjet head, the surface tension of the polymeric composition can be in the range of 20 mN / m to 45 mN / m.

[0105] The polymeric composition according to an embodiment of the present disclosure has excellent storage stability.

[0106] Before the storage test, the polymeric composition according to an embodiment of the present disclosure has a first flexibility (Aa), a first viscosity (Ab), a first degree of curing (Ac), a first shrinkage rate (Ad), and a first surface tension (Ae). Here, the expression "before the storage test" refers to the state before the polymeric composition is stored for the storage stability test. The expression "before the storage test" can be used interchangeably with the expression "at the initial stage of the storage test".

[0107] Therefore, at the initial stage of the storage test, the polymeric composition according to an embodiment of the present disclosure can have a first flexibility (Aa), a first viscosity (Ab), a first degree of curing (Ac), a first shrinkage rate (Ad), and a first surface tension (Ae).

[0108] After being stored in a sealed state at room temperature (25 °C ± 10 °C) for one year, the polymeric composition according to an embodiment of the present disclosure has a second flexibility (Ba), a second viscosity (Bb), a second degree of curing (Bc), a second shrinkage rate (Bd), and a second surface tension (Be).

[0109] According to an embodiment of the present disclosure, the polymeric composition can be sealed in an 18 L tank container and stored at a constant temperature. The storage container can be made of a stable material that does not react with the polymeric composition. For example, the polymeric composition can be stored in a storage container made of glass or stainless steel. In addition, after being stored in a sealed state at 50 °C for one year, the polymeric composition according to an embodiment of the present disclosure has a third flexibility (Ca), a third viscosity (Cb), a third degree of curing (Cc), a third shrinkage rate (Cd), and a third surface tension (Ce).

[0110] The storage variation index (ISV) of the polymerization composition according to an embodiment of the present disclosure is 18 or less.

[0111] The storage variation index (ISV) according to an embodiment of the present disclosure is obtained using the following Equation 1.

[0112] [Equation 1]

[0113] ISV = (|Aa - Ba| / Aa) * 100 + (|Aa - Ca| / Aa) * 100 + (|Ab - Bb| / Ab) * 100 + (|Ab - Cb| / Ab) * 100 + (|Ac - Bc| / Ac) * 100 + (|Ac - Cc| / Aa) * 100 + (|Ad - Bd| / Ad) * 100 + (|Ad - Cd| / Ad) * 100 + (|Ae - Be| / Ae) * 100 + (|Ae - Ce| / Ae) * 100

[0114] According to the DIN EN ISO 14577-1 and ASTM E 2546 standards, a nanoindenter (model name: Picodentor HM500) for measuring physical properties is used to measure the first flexibility (Aa). The first flexibility (Aa) of the polymerization composition before the storage test is measured using the nanoindenter Picodentor HM500. Specifically, according to the ASTM E 2546 standard, the polymerization composition before the storage test is spin-coated on a 50 mm * 50 mm glass substrate to a thickness of 8 μm and cured using ultraviolet light in an N2 atmosphere. Specifically, the polymerization composition coated on the glass substrate is cured by irradiating light with a wavelength of 395 nm at 1,500 mJ / cm 2 to prepare an organic film. Then, a load of 2.0 mN is applied to the organic film (cured film) formed from the polymerization composition for 5 seconds, and the modulus (MPa) is measured. The measured modulus (MPa) corresponds to the flexibility.

[0115] The second flexibility (Ba) is measured for a sample collected from the polymerization composition after being stored in a sealed state at room temperature (25 °C ± 10 °C) for one year. The method for measuring the second flexibility (Ba) is the same as the method for measuring the first flexibility (Aa).

[0116] The third flexibility (Ca) is measured for a sample collected from the polymerization composition after being stored in a sealed state at 50 °C for one year. The method for measuring the third flexibility (Ca) is the same as the method for measuring the first flexibility (Aa).

[0117] According to an embodiment of the present disclosure, the first flexibility (Aa) is from 1985 MPa to 2416 MPa, the second flexibility (Ba) is from 1947 MPa to 2390 MPa, and the third flexibility (Ca) is from 1935 MPa to 2375 MPa. An organic film manufactured using a polymeric composition having a flexibility within the above range has an appropriate modulus and can effectively block oxygen, moisture, etc.

[0118] Using the method specified in ASTM D 2196, the first viscosity (Ab) of the polymeric composition before the storage test is measured at 25 °C using a DV2T viscometer from Brookfield. Specifically, 0.5 ml of the polymeric composition is loaded into the DV2T viscometer from Brookfield, and the first viscosity (Ab) is measured at 50% torque.

[0119] The second viscosity (Bb) is measured for a sample collected from the polymeric composition after storing in a sealed state at room temperature (25 °C ± 10 °C) for one year. The method for measuring the second viscosity (Bb) is the same as the method for measuring the first viscosity (Ab).

[0120] The third viscosity (Cb) is measured for a sample collected from the polymeric composition after storing in a sealed state at 50 °C for one year. The method for measuring the third viscosity (Cb) is the same as the method for measuring the first viscosity (Ab).

[0121] According to an embodiment of the present disclosure, at 25 °C, the first viscosity (Ab) can be from 19.5 cPs to 22.0 cPs, the second viscosity (Bb) can be from 19.8 cPs to 22.2 cPs, and the third viscosity (Cb) can be from 19.8 cPs to 23.0 cPs. When using a polymeric composition having a viscosity within the above range, an organic film can be effectively manufactured, and thereby the oxygen and moisture barrier efficiency of the organic film can be improved.

[0122] According to an embodiment of the present disclosure, the degree of curing can be calculated based on the change in the ratio of C═C double bonds before and after curing. For example, the degree of curing can be calculated from the ratio of C═C double bonds in the polymeric composition before curing and the ratio of C═C double bonds in the organic film after curing.

[0123] According to an embodiment of the present disclosure, the degree of curing can be calculated using the following reference equation 1.

[0124] [Reference Equation 1]

[0125]

[0126] According to an embodiment of the present disclosure, the first degree of cure (Ac) of the polymeric composition before the storage test is measured using a Spectrum 100 FTIR spectrometer from PerkinElmer.

[0127] First, an infrared spectrum of the polymeric composition before the storage test is obtained in reflection mode using a Spectrum 100 FTIR spectrometer from PerkinElmer, and then the peak area at a wave number of 810 cm -1 and the peak area at a wave number of 1,720 cm -1 are calculated therefrom.

[0128] The peak at a wave number of 810 cm -1 corresponds to the peak of the C═C double bond, and the peak area at a wave number of 810 cm -1 corresponds to the number of C═C double bonds. As the curing of the polymeric composition proceeds, the number of C═C double bonds decreases, and the peak area at a wave number of 810 cm -1 decreases.

[0129] The peak at a wave number of 1,720 cm -1 corresponds to the peak of the C═O bond, and the peak area at a wave number of 1,720 cm -1 corresponds to the number of C═O bonds. Even as the curing of the polymeric composition proceeds, the number of C═O bonds hardly changes or does not change. Therefore, the peak area at a wave number of 1,720 cm -1 can be used as a reference value.

[0130] As can be seen from Reference Equation 2, the value obtained by dividing the peak area measured for the polymeric composition at a wave number of 810 cm -1 by the peak area measured for the polymeric composition at a wave number of 1,720 cm -1 can be the "C═C ratio of the polymeric composition".

[0131] [Reference Equation 2]

[0132] [C═C ratio of the polymeric composition] = (peak area of the polymeric composition at a wave number of 810 cm -1 ) / (peak area of the polymeric composition at a wave number of 1,720 cm -1 )

[0133] Then, before the storage test, the polymeric composition is spin-coated onto a 50 mm × 50 mm glass substrate to a thickness of 8 μm, and then cured using ultraviolet light in an N2 atmosphere. Specifically, by irradiating with an LED lamp at 1,500 mJ / cm 2Light with a wavelength of 395 nm is used to cure the polymer composition coated on a glass substrate to fabricate an organic film. The infrared spectrum of the organic film is measured in reflection mode (ATR) using a Spectrum 100 FTIR spectrometer from PerkinElmer in the wavenumber range of 0 cm -1 to 2,000 cm -1 The peak area at a wavenumber of 810 cm -1 and the peak area at a wavenumber of 1,720 cm -1 are calculated using the infrared spectrum. As shown in Reference Equation 3, the value obtained by dividing the peak area measured at a wavenumber of 810 cm -1 of the organic film by the peak area measured at a wavenumber of 1,720 cm -1 of the organic film can be the "C═C ratio of the organic film".

[0134] [Reference Equation 3]

[0135] [C═C ratio of the organic film] = (peak area at a wavenumber of 810 cm -1 of the organic film) / (peak area at a wavenumber of 1,720 cm -1 of the organic film)

[0136] Then, the degree of cure is calculated according to Reference Equation 1. The result corresponds to the first degree of cure (Ac).

[0137] The second degree of cure (Bc) is measured for a sample collected from the polymer composition after being stored in a sealed state at room temperature (25 °C ± 10 °C) for one year. The method for measuring the second degree of cure (Bc) is the same as the method for measuring the first degree of cure (Ac).

[0138] The third degree of cure (Cc) is measured for a sample collected from the polymer composition after being stored in a sealed state at 50 °C for one year. The method for measuring the third degree of cure (Cc) is the same as the method for measuring the first degree of cure (Ac).

[0139] According to one embodiment of the present disclosure, the first degree of cure (Ac) can be 93% to 95%, the second degree of cure (Bc) can be 92% to 94%, and the third degree of cure (Cc) can be 92% to 94%. The organic film prepared from the polymer composition having such a high degree of cure can effectively protect the organic light-emitting device and can effectively block the entry of oxygen, moisture, etc.

[0140] According to one embodiment of the present disclosure, when the polymer composition is cured in a container having a specific size, the shrinkage rate is calculated based on the change in diameter before and after curing.

[0141] According to an embodiment of the present disclosure, the first shrinkage rate (Ad) is calculated based on the change in diameter of the polymerization composition before and after curing contained in a glass tube with an inner diameter of 11.5 mm before storage testing.

[0142] First, 2 g of the polymerization composition is placed in a glass tube with an inner diameter of 11.5 mm and a height of 100 mm. In this case, it can be considered that the diameter of the polymerization composition before curing is 11.5 mm.

[0143] Then, the polymerization composition contained in the glass tube is cured by irradiating with ultraviolet light. Specifically, the polymerization composition is cured by irradiating light with a wavelength of 395 nm at a dose of 5,000 mJ / cm 2 . After curing, the glass tube is broken to obtain a rod-shaped cured product formed from the polymerization composition. The obtained rod-shaped cured product is aged at room temperature for 30 minutes. Then, the diameter at 10 mm below the rod-shaped cured product is measured. The diameter at 10 mm below the rod-shaped cured product corresponds to the "diameter after curing". Then, using the "diameter before curing" of 11.5 mm and the diameter after curing, the shrinkage rate is calculated according to Reference Equation 4.

[0144] [Reference Equation 4]

[0145]

[0146] The second shrinkage rate (Bd) is measured for a sample collected from the polymerization composition after being stored in a sealed state at room temperature (25 °C ± 10 °C) for one year. The method for measuring the second shrinkage rate (Bd) is the same as the method for measuring the first shrinkage rate (Ad).

[0147] The third shrinkage rate (Cd) is measured for a sample collected from the polymerization composition after being stored in a sealed state at 50 °C for one year. The method for measuring the third shrinkage rate (Cd) is the same as the method for measuring the first shrinkage rate (Ad).

[0148] According to an embodiment of the present disclosure, the first shrinkage rate (Ad) can be 2.5% to 3.0%, the second shrinkage rate (Bd) can be 2.5% to 3.1%, and the third shrinkage rate (Cd) can be 2.5% to 3.1%. When an organic film is manufactured from a polymerization composition having these shrinkage rates, deformation of the product to which the organic film is applied can be prevented, durability can be improved, and entry of oxygen, moisture, etc. can be effectively blocked.

[0149] According to the method specified in ISO 304, the first surface tension (Ae) of the polymeric composition before the storage test was measured using a tensiometer K9 from KRUSS with an O-ring. Specifically, 20 g of the polymeric composition was placed into the O-ring using the tensiometer K9 from KRUSS, and the first surface tension (Ae) was measured in Max mode.

[0150] The second surface tension (Be) was measured for a sample collected from the polymeric composition after storing it in a sealed state at room temperature (25 °C ± 10 °C) for one year. The method for measuring the second surface tension (Be) is the same as the method for measuring the first surface tension (Ae).

[0151] The third surface tension (Ce) was measured for a sample collected from the polymeric composition after storing it in a sealed state at 50 °C for one year. The method for measuring the third surface tension (Ce) is the same as the method for measuring the first surface tension (Ae).

[0152] According to one embodiment of the present disclosure, the first surface tension (Ae) can be from 35.0 mN / m to 35.9 mN / m, the second surface tension (Be) can be from 35.2 mN / m to 36.1 mN / m, and the third surface tension (Ce) can be from 35.2 mN / m to 36.1 mN / m. The polymeric composition having a surface tension within the above range can be easily discharged from an inkjet head because the surface tension is sufficient. Therefore, the polymeric composition can be smoothly ejected by an inkjet device.

[0153] When the surface tension of the polymeric composition is too high, the ink droplets of the polymeric composition scatter, and when the surface tension is too low, the spreading or dispersion of the solution increases beyond what is required when colliding with the object to be coated. Therefore, according to one embodiment of the present disclosure, the first surface tension (Ae), the second surface tension (Be), and the third surface tension (Ce) are adjusted as described above.

[0154] According to one embodiment of the present disclosure, when the storage change index (ISV) of the polymeric composition is 18 or less, the polymeric composition has excellent storage stability, thereby experiencing little or almost no quality change during use, such that the reliability of the organic film made from the polymeric composition can be ensured. Therefore, the stability and reliability of the encapsulation material 590 including the organic film and the display device 100 including the encapsulation material 590 can be improved.

[0155] According to one embodiment of the present disclosure, a polymeric composition capable of ensuring stability in terms of flexibility, viscosity, degree of curing, shrinkage rate, and surface tension can be prepared using a mixture in which a first monomer having a low viscosity of 100 cPs or less and a second monomer having a high viscosity of more than 100 cPs are mixed in a predetermined ratio.

[0156] According to an embodiment of the present disclosure, the storage variation index (ISV) of the polymerization composition may be from 1 to 18, from 3 to 17, or from 5 to 16.

[0157] According to an embodiment of the present disclosure, the methacrylic acid index (MH1) of the first monomer may be from 0.5 to 5.0, and the methacrylic acid index (MH1) of the second monomer may be from 0.1 to 3.0. The methacrylic acid index (MH1) can be obtained using Equation 2 below.

[0158] [Equation 2]

[0159] MH1 = (molecular weight of the monomer * X) / {total number of atoms in the monomer * (total number of carbon atoms in the monomer - total number of oxygen atoms in the monomer)}

[0160] In Equation 2, X is the number of acryloyl groups.

[0161] The higher the increase in the methacrylic acid index (MH1), the greater the proportion of acryloyl groups. Since acryloyl groups participate in polymerization, it can be inferred that the polymerization efficiency of the polymerization composition increases with the increase in the methacrylic acid index (MH1).

[0162] When the methacrylic acid index (MH1) of the first monomer is less than 0.5, there may be a problem of deterioration in the polymerization ability of the polymerization composition. When MH1 is higher than 5.0, there may be a problem of excessive increase in the polymerization ability of the polymerization composition. When the methacrylic acid index (MH1) of the second monomer is less than 0.1, there may be a problem of deterioration in the polymerization ability of the polymerization composition. When MH1 is higher than 3.0, there may be a problem of excessive increase in the polymerization ability of the polymerization composition.

[0163] According to an embodiment of the present disclosure, the methacrylic acid index (MH1) of the first monomer may be from 0.5 to 5.0, from 0.5 to 4.0, or from 0.7 to 3.0.

[0164] When the methacrylic acid index (MH1) of the first monomer is from 0.5 to 5.0, the methacrylic acid index (MH1) of the second monomer is from 0.1 to 3.0, and the viscosity of the polymerization monomer is 30 cPs or less or the viscosity is 23 cPs or less, curing can proceed smoothly and the process efficiency can be improved.

[0165] The polymeric composition according to an embodiment of the present disclosure has a low moisture concentration. For example, the moisture (H2O) concentration of the polymeric composition according to an embodiment of the present disclosure can be 40 ppm or less. More specifically, the moisture (H2O) concentration of the polymeric composition according to an embodiment of the present disclosure can be 20 ppm or less. Accordingly, when forming the organic film 592 of the encapsulation material 590 using the polymeric composition according to an embodiment of the present disclosure, damage to the organic light-emitting device 570 due to moisture contained in the organic film 592 can be prevented.

[0166] Another embodiment of the present disclosure provides an organic film manufactured from the polymeric composition according to an embodiment of the present disclosure.

[0167] The organic film according to another embodiment of the present disclosure can be formed by polymerization and curing of the polymeric composition according to an embodiment of the present disclosure.

[0168] According to another embodiment of the present disclosure, the polymerization and curing of the polymeric composition can be performed by irradiating with light. The light applied to the light irradiation includes, for example, electromagnetic waves such as microwaves, infrared rays, ultraviolet rays, and gamma rays; or electron beams such as alpha particle beams, proton beams, and neutron beams.

[0169] According to another embodiment of the present disclosure, the polymerization of the polymeric composition can be performed by irradiating with light having a wavelength of 500 nm or less. For example, the polymerization of the polymeric composition can be performed using visible light or ultraviolet light. For example, light having a wavelength of 290 nm to 450 nm can be irradiated, and light having a central wavelength of 380 nm to 410 nm can be irradiated. The intensity of the light can be, for example, less than or equal to 400 mW / cm 2 , and can be in the range of 100 mW / cm 2 to 400 mW / cm 2 . The dose of the irradiated light can be in the range of 300 mJ / cm 2 to 2,500 mJ / cm 2 or in the range of 500 mJ / cm 2 to 1,500 mJ / cm 2 .

[0170] According to another embodiment of the present disclosure, the thickness of the organic film can be 0.5 μm to 100 μm. More specifically, the thickness of the organic film can be 1 μm to 90 μm, and the thickness can be 5 μm to 70 μm.

[0171] Based on a thickness of 8 μm, the light transmittance of the organic film according to another embodiment of the present disclosure with respect to light having a wavelength of 400 nm can be 97.0% or more.

[0172] Another embodiment of the present disclosure provides an encapsulation material 590 including an organic film manufactured using a polymer composition according to an embodiment of the present disclosure. The encapsulation material 590 is as shown in Figure 1 . The encapsulation material 590 may include: a first inorganic film 591, an organic film 592, and a second inorganic film 593, and Figure 1 the organic film 592 may be formed of a polymer composition according to an embodiment of the present disclosure.

[0173] When applying a polymer composition according to an embodiment of the present disclosure, even when the polymer composition is used after being stored at room temperature for more than one year, an organic film 592 having excellent physical properties and life characteristics can be manufactured. Accordingly, an encapsulation material 590 having excellent moisture and oxygen barrier properties can be manufactured.

[0174] In addition, since the organic film 592 formed of a polymer composition according to an embodiment has excellent light transmittance, the visibility of a display device 100 to which the encapsulation material 590 is applied can be improved.

[0175] Another embodiment of the present disclosure provides a display device 100 including the encapsulation material 590 as described above. The display device 100 may have, for example, a configuration as shown in Figure 1 . Hereinafter, a detailed description of the display device 100 will be omitted to avoid repetition.

[0176] Another embodiment of the present disclosure provides a method for preparing a polymer composition.

[0177] A method for preparing a polymer composition according to another embodiment of the present disclosure includes: mixing a first monomer, a second monomer, and a polymerization initiator.

[0178] The first monomer is represented by the following formula 1, has an acryloyl group, and has a viscosity of 1 cPs to 100 cPs at 25°C.

[0179] [Formula 1]

[0180] C i H j O k

[0181] In formula 1, i is an integer of 10 to 25, j is an integer of 10 to 40, k is an integer of 1 to 6, and i / k is 2 or more.

[0182] The second monomer is represented by the following formula 2, has an acryloyl group, and has a viscosity higher than 100 cPs and less than or equal to 500 cPs at 25°C.

[0183] [Formula 2]

[0184] C p H q O r

[0185] In Formula 2, p is an integer from 10 to 28, q is an integer from 10 to 54, r is an integer from 1 to 6, and p / r is 2 or more.

[0186] The first monomer, the second monomer, and the polymerization initiator have been described, and thus their detailed descriptions will be omitted to avoid repetition.

[0187] According to another embodiment of the present disclosure, a tank for preparing a polymerization composition is first cleaned to prepare the polymerization composition.

[0188] Acetone can be used to clean the tank. For example, acetone can be used to clean the tank and the pipeline.

[0189] Then, the raw materials are fed into the tank and mixed to prepare a mixed solution.

[0190] The raw materials for preparing the polymerization composition include a first monomer, a second monomer, and a polymerization initiator. The first monomer, the second monomer, and the polymerization initiator are fed into the tank and then mixed. Specifically, based on the total weight of 100 parts by weight of the first monomer and the second monomer, 50 to 80 parts by weight of the first monomer, 20 to 50 parts by weight of the second monomer, and 5 parts by weight or less of the polymerization initiator can be used. More specifically, based on the total weight of 100 parts by weight of the first monomer and the second monomer, the amount of the polymerization initiator used can be 1 to 5 parts by weight or 3 to 5 parts by weight.

[0191] According to one embodiment of the present disclosure, the polymerization initiator may include at least one of 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO), bis(2,4,6-trimethylbenzoyl)-phenylphosphine oxide, and 2,4,6-trimethylbenzoyl epoxyphenylphosphine oxide.

[0192] When the polymerization initiator is a solid, the polymerization initiator is dissolved in the monomer. The polymerization initiator can be dissolved in the first monomer, can be dissolved in the second monomer, or can be dissolved in the monomer solution of the mixture containing the first monomer and the second monomer.

[0193] A small amount of monomer can be used alone to dissolve the polymerization initiator. For example, after dissolving the polymerization initiator in a part of the first monomer, the solution of the polymerization initiator in the first monomer is added to the mixed solution of the first monomer and the second monomer. Or, after dissolving the polymerization initiator in a part of the second monomer, the solution of the polymerization initiator in the second monomer is added to the mixed solution of the first monomer and the second monomer.

[0194] When the solid polymerization initiator is not completely dissolved, the polymerization initiator may precipitate during long-term storage of the polymerization composition, and the haze of the polymerization composition may increase. Therefore, during the process of forming an organic film using the polymerization composition, polymerization and curing may not proceed smoothly, and the optical properties of the organic film formed using the polymerization composition may deteriorate. Therefore, it is important to completely dissolve the polymerization initiator in the monomer.

[0195] According to one embodiment of the present disclosure, in order to completely dissolve the polymerization initiator, a mixture of the polymerization initiator and the monomer is stirred at a stirring speed of 100 rpm at 40 °C for 4 hours. As a result, a mixed solution containing a first monomer, a second monomer, and a polymerization initiator is prepared.

[0196] Then, the mixed solution containing the first monomer, the second monomer, and the polymerization initiator is filtered by circulation.

[0197] Specifically, in order to remove foreign matters and fine particles from the mixed solution, a 0.05 μm filter is installed between the bottom of the tank and the packaging line, and then, while maintaining the temperature of the tank at 23 °C ± 5 °C, by spraying nitrogen (N2) with a purity of 99.999% into the tank at a pressure of 1.2 kgf / cm 2 , circulation filtration is carried out at a stirring speed of 50 rpm. Nitrogen (N2) is used as the purge gas, and the moisture contained in the mixed solution is removed by nitrogen (N2).

[0198] The circulation filtration is carried out for 20 hours or more, and the moisture contained in the mixed solution is removed during the circulation filtration to complete the polymerization composition. As a result of the circulation filtration, the polymerization composition according to one embodiment of the present disclosure can be given a moisture (H2O) concentration of 40 ppm or less.

[0199] In addition, according to another embodiment of the present disclosure, the polymerization composition contains few particles or no particles. Specifically, the polymerization composition does not contain particles having a particle size of 0.5 μm or more, and contains particles having a particle size of less than 0.5 μm at a density of 22 particles / L or less. When particles are present in the polymerization composition, problems such as the formation of pinholes in the organic film manufactured using the polymerization composition may occur. Therefore, it is necessary to minimize the content of particles in the polymerization composition.

[0200] The thus-completed polymerization composition is stored in a tank-type container. To achieve storage stability, the polymerization composition is fed into the tank-type container, filled with nitrogen, and then the container is sealed.

[0201] Hereinafter, the present disclosure will be described in more detail through specific examples and comparative examples. The examples and comparative examples described below are provided to illustrate the present disclosure and should not be construed as limiting the scope of the present disclosure.

[0202] <Examples and Comparative Examples>

[0203] <Monomer>

[0204] The polymerization composition was prepared using the monomers listed in Table 1 below.

[0205] [Table 1]

[0206]

[0207] In Table 1, the term "C / O ratio" refers to the i / k value of the first monomer represented by Formula 1 below, or the p / r value of the second monomer represented by Formula 2 below.

[0208] [Formula 1]

[0209] C i H j O k

[0210] [Formula 2]

[0211] C p H q O r

[0212] In Table 1, MH1 refers to the acrylic acid index and is calculated using Equation 2 below.

[0213] [Equation 2]

[0214] MH1 = (molecular weight of the monomer * X) / {total number of atoms in the monomer * (total number of carbon atoms in the monomer - total number of oxygen atoms in the monomer)}

[0215] In Equation 2, X is the number of acryloyl groups.

[0216] 1,12-Dodecanediol dimethacrylate (first monomer A1) can be represented by Formula 7 below.

[0217] [Formula 7]

[0218]

[0219] Tetraethylene glycol diacrylate (first monomer A2) can be represented by Formula 8 below.

[0220] [Formula 8]

[0221]

[0222] Benzyl acrylate (first monomer A3) can be represented by Formula 9 below.

[0223] [Formula 9]

[0224]

[0225] 2-Phenylphenoxyethyl acrylate (second monomer B1) can be represented by the following formula 10.

[0226] [Formula 10]

[0227]

[0228] Tricyclodecane dimethanol diacrylate (second monomer B2) can be represented by the following formula 11.

[0229] [Formula 11]

[0230]

[0231] 3-(Trimethoxysilyl)propyl methacrylate (comparative monomer) can be represented by the following formula 12.

[0232] [Formula 12]

[0233]

[0234] <Preparation of Polymer Composition>

[0235] The polymer compositions according to Examples 1 to 6 and Comparative Examples 1 to 6 were prepared using the first monomers (A1, A2, A3), the second monomers (B1, B2), and the comparative monomer (C1) in the amounts in parts by weight listed in Table 2 below. In Table 2, the content of each component is based on parts by weight. 2,4,6-Trimethylbenzoyl-diphenylphosphine oxide (TPO) was used as a polymerization initiator. Based on 100 parts by weight of all the monomers, the amount of the polymerization initiator used was 3 parts by weight.

[0236] [Table 2]

[0237]

[0238] <Example 1>

[0239] First, the tank and pipeline were cleaned with acetone.

[0240] Based on the content ratio listed in Table 2, 130 g of the first monomer A1, 70 g of the second monomer B1, and 6 g of the polymerization initiator (TPO) were fed into the tank.

[0241] To completely dissolve the polymerization initiator, the polymerization initiator and the mixed solution of the first monomer and the second monomer were stirred at a stirring rate of 100 RPM at 40 °C for 4 hours. As a result, a mixed solution containing the first monomer, the second monomer, and the polymerization initiator was prepared.

[0242] Then, the mixed solution containing the first monomer, the second monomer, and the polymerization initiator is filtered through a cycle. Specifically, a 0.05 μm filter is installed on the tank, and then while maintaining the temperature of the tank at 23 °C ± 5 °C, nitrogen (N2) with a purity of 99.999% is injected into the tank at a pressure of 1.2 kgf / cm 2 and circulated and filtered at a stirring speed of 50 rpm. Nitrogen (N2) is used as the purge gas, and moisture is removed by nitrogen (N2).

[0243] The circulation filtration is carried out for more than 20 hours, and moisture contained in the mixed solution is removed during the circulation filtration to complete the polymerization composition. After the circulation filtration, the moisture (H2O) concentration of the polymerization composition according to Example 1 is 35 ppm.

[0244] In addition, the polymerization composition according to Example 1 does not contain particles with a particle size of 0.5 μm or more, but contains particles with a particle size of less than 0.5 μm at a density of 5 particles / L or less.

[0245] The thus-completed polymerization composition according to Example 1 is stored in a nitrogen-filled tank container, and then packaged and sealed.

[0246] <Example 2>

[0247] A polymerization composition is prepared in the same manner as in Example 1, except that 130 g of the first monomer A2, 70 g of the second monomer B2, and 6 g of the polymerization initiator (TPO) are fed into the tank based on the content ratios listed in Table 2.

[0248] <Example 3>

[0249] A polymerization composition is prepared in the same manner as in Example 1, except that 130 g of the first monomer A1, 70 g of the second monomer B2, and 6 g of the polymerization initiator (TPO) are fed into the tank based on the content ratios listed in Table 2.

[0250] <Example 4>

[0251] A polymerization composition is prepared in the same manner as in Example 1, except that 130 g of the first monomer A2, 70 g of the second monomer B1, and 6 g of the polymerization initiator (TPO) are fed into the tank based on the content ratios listed in Table 2.

[0252] <Example 5>

[0253] A polymerization composition is prepared in the same manner as in Example 1, except that 100 g of the first monomer A1, 30 g of the first monomer A3, 70 g of the second monomer B1, and 6 g of the polymerization initiator (TPO) are fed into the tank based on the content ratios listed in Table 2.

[0254] <Example 6>

[0255] A polymerization composition was prepared in the same manner as in Example 1, except that 100 g of the first monomer A2, 30 g of the first monomer A3, 70 g of the second monomer B2, and 6 g of a polymerization initiator (TPO) were fed into a tank based on the content ratios listed in Table 2.

[0256] <Comparative Example 1>

[0257] A polymerization composition was prepared in the same manner as in Example 1, except that 130 g of the first monomer A1, 70 g of the comparative monomer C1, and 6 g of a polymerization initiator (TPO) were fed into a tank based on the content ratios listed in Table 2.

[0258] <Comparative Example 2>

[0259] A polymerization composition was prepared in the same manner as in Example 1, except that 130 g of the first monomer A2, 70 g of the comparative monomer C1, and 6 g of a polymerization initiator (TPO) were fed into a tank based on the content ratios listed in Table 2.

[0260] <Comparative Example 3>

[0261] A polymerization composition was prepared in the same manner as in Example 1, except that 200 g of the first monomer A1 and 6 g of a polymerization initiator (TPO) were fed into a tank based on the content ratios listed in Table 2.

[0262] <Comparative Example 4>

[0263] Based on the content ratios listed in Table 2, 100 g of the first monomer A2, 100 g of the second monomer B1, and 6 g of a polymerization initiator (TPO) were used. A polymerization composition was prepared in the same manner as in Example 1, except that the cycle filtration was omitted.

[0264] <Comparative Example 5>

[0265] Based on the content ratios listed in Table 2, 100 g of the first monomer A2, 100 g of the second monomer B1, and 6 g of a polymerization initiator (TPO) were used. A polymerization composition was prepared in the same manner as in Example 1, except that the step of injecting nitrogen (N2) into the tank at a predetermined pressure during the cycle filtration was omitted.

[0266] <Comparative Example 6>

[0267] Based on the content ratios listed in Table 2, 100 g of the first monomer A2, 100 g of the second monomer B1, and 6 g of a polymerization initiator (TPO) were used. The polymerization composition was prepared in the same manner as in Example 1, except that the step of installing a filter on the tank during the cycle filtration was omitted.

[0268] <Experimental Example>

[0269] (1) Measuring the moisture content

[0270] Measurement standard: Measured using the Karl Fisher method

[0271] Measuring device: Coulometer model 831KF from Metrohm

[0272] Measurement mode: Karl Fisher titration mode

[0273] Measurement method: Using a syringe, 0.5 g of each polymerization composition prepared in Examples 1 to 6 and Comparative Examples 1 to 6 was collected and injected into the coulometer to measure the moisture content.

[0274] The measurement results are shown in Table 3 below.

[0275] (2) Measuring the particle number

[0276] Measuring device: Model SLS-1200 from NanoVision Technology

[0277] Measurement conditions: Sample mode in a clean room

[0278] Measurement method: 200 g of each polymerization composition prepared in Examples 1 to 6 and Comparative Examples 1 to 6 was collected in a clean bottle and injected into the measuring device at a suction rate of 5 mL to measure the number of particles per liter (L).

[0279] The measurement results are shown in Table 3 below.

[0280] [Table 3]

[0281] Item Moisture Concentration (ppm) Particle Number (particles / L) Example 1 35 5 Example 2 37 6 Example 3 34 4 Example 4 36 6 Example 5 38 3 Example 6 37 5 Comparative Example 1 35 7 Comparative Example 2 39 8 Comparative Example 3 41 8 Comparative Example 4 250 2,500 Comparative Example 5 250 7 Comparative Example 6 41 2,600

[0282] (3) Measuring flexibility

[0283] Measurement standard: Measured according to the method specified in ASTM E 2546

[0284] Measuring device: Nanoindentation instrument Picodentor HM500 from Helmut Fischer

[0285] Measurement conditions: F: 2.0 mN / 5 s, C = 5.0 S

[0286] Measurement method: The polymer composition was spin-coated on a glass substrate of 50 mm × 50 mm to a thickness of 8 μm, and irradiated with ultraviolet light having a wavelength of 395 nm using an LED lamp in an N2 atmosphere at 1,500 mJ / cm 2 to irradiate the polymer composition coated on the glass substrate to obtain an organic film. Then, a load of 2.0 mN was applied to the organic film (cured film) formed from the polymer composition for 5 seconds to measure the modulus (MPa). The measured modulus (MPa) corresponds to flexibility.

[0287] First flexibility (Aa): The flexibility of each of the polymer compositions prepared in Examples 1 to 6 and Comparative Examples 1 to 6 measured before the storage test is referred to as "first flexibility (Aa)".

[0288] Second flexibility (Ba): The flexibility of each of the polymer compositions prepared in Examples 1 to 6 and Comparative Examples 1 to 6 measured after being stored in a tank container in a sealed state at room temperature (25°C ± 10°C) for one year is referred to as "second flexibility (Ba)".

[0289] Third flexibility (Ca): The flexibility of each of the polymer compositions prepared in Examples 1 to 6 and Comparative Examples 1 to 6 measured after being stored in a tank container in a sealed state at 50°C for one year is referred to as "third flexibility (Ca)".

[0290] The measurement results are shown in Table 4 below.

[0291] [Table 4]

[0292]

[0293] In Table 4, the flexibility index is calculated as the sum of "(|Aa - Ba| / Aa) × 100" and "(|Aa - Ca| / Aa) × 100".

[0294] Flexibility index = (|Aa - Ba| / Aa) × 100 + (|Aa - Ca| / Aa) × 100

[0295] As can be seen from Table 4, the polymer compositions according to Examples 1 to 6 have a low flexibility index, and the flexibility hardly changes after long-term storage, and the flexibility is very stable. On the other hand, it can be seen that the polymer compositions according to Comparative Examples 1 to 6 have a high flexibility index, the flexibility changes greatly after long-term storage, and the flexibility is unstable.

[0296] (4) Measurement of viscosity

[0297] Measurement standard: Measured according to the method specified in ASTM D 2196

[0298] Measuring device: Model DV2T from Brookfield

[0299] Measurement conditions: Cone-plate mode

[0300] Measurement temperature: 25 °C

[0301] Measurement method: Load 0.5 ml of the polymer composition and set the torque to 50%.

[0302] First viscosity (Ab): The viscosity of each polymer composition prepared in Examples 1 to 6 and Comparative Examples 1 to 6 measured before the storage test is referred to as "First viscosity (Ab)".

[0303] Second viscosity (Bb): The viscosity of each polymer composition prepared in Examples 1 to 6 and Comparative Examples 1 to 6 measured after storing for one year at room temperature (25 °C ± 10 °C) in a sealed state is referred to as "Second viscosity (Bb)".

[0304] Third viscosity (Cb): The viscosity of each polymer composition prepared in Examples 1 to 6 and Comparative Examples 1 to 6 measured after storing for one year at 50 °C in a sealed state is referred to as "Third viscosity (Cb)".

[0305] The measurement results are shown in Table 5 below.

[0306] [Table 5]

[0307]

[0308] In Table 5, the viscosity index is calculated as the sum of "(|Ab - Bb| / Ab) * 100" and "(|Ab - Cb| / Ab) * 100".

[0309] Viscosity index = (|Ab - Bb| / Ab) * 100 + (|Ab - Cb| / Ab) * 100

[0310] As can be seen from Table 5, the polymer compositions according to Examples 1 to 6 have a low viscosity index, a small change in viscosity after long-term storage, and are very stable in terms of viscosity. On the other hand, it can be seen that the polymer compositions according to Comparative Examples 1 to 6 have a high viscosity index, a large change in viscosity after long-term storage, and are unstable in terms of viscosity.

[0311] (5) Measuring the degree of curing

[0312] Measuring device: Spectrum 100 FTIR spectrometer from PerkinElmer

[0313] Measurement conditions: Reflection mode

[0314] Light source: UV LED 395 nm light source (FE300 3W from Phoseon)

[0315] Light dose: 1,500 mJ / cm 2

[0316] The degree of curing can be calculated based on the change in the ratio of C=C double bonds before and after curing. Specifically, the degree of curing can be calculated according to the following reference equation 1 from the "ratio of C=C double bonds in the polymer composition" in the state before curing and the "ratio of C=C double bonds in the organic film" in the state after curing.

[0317] [Reference equation 1]

[0318]

[0319] First, an infrared spectrum of the polymer composition before the storage test is obtained in reflection mode using a Spectrum 100 FTIR spectrometer from PerkinElmer, and then the peak area at a wave number of 810 cm -1 and the peak area at a wave number of 1,720 cm -1 are calculated from it.

[0320] The peak at a wave number of 810 cm -1 corresponds to the peak of the C=C double bond, and the peak area at a wave number of 810 cm -1 corresponds to the amount of the C=C double bond. As the curing of the polymer composition proceeds, the amount of the C=C double bond decreases, and the peak area at a wave number of 810 cm -1 decreases.

[0321] The peak at a wave number of 1,720 cm -1 corresponds to the peak of the C=O bond, and the peak area at a wave number of 1,720 cm -1 corresponds to the amount of the C=O bond. Even as the curing of the polymer composition proceeds, the amount of the C=O bond changes little or not at all. Therefore, the peak area at a wave number of 1,720 cm -1 can be used as a reference value.

[0322] As can be seen from reference equation 2, the value obtained by dividing the peak area measured at a wave number of 810 cm -1 of the polymer composition by the peak area measured at a wave number of 1,720 cm -1 of the polymer composition can be the "C=C ratio of the polymer composition".

[0323] [Reference equation 2]

[0324] [C=C ratio of the polymeric composition] = (peak area of the polymeric composition at a wave number of 810 cm -1 ) / (peak area of the polymeric composition at a wave number of 1,720 cm -1 )

[0325] Then, the polymeric composition was spin-coated on a 50 mm * 50 mm glass substrate to a thickness of 8 μm, and then cured using ultraviolet light in an N2 atmosphere. Specifically, the polymeric composition coated on the glass substrate was cured by irradiating light with a wavelength of 395 nm at 1,500 mJ / cm 2 to produce an organic film. The infrared spectrum of the organic film was measured in reflection mode (ATR) using a Spectrum 100 FTIR spectrometer from PerkinElmer in the wave number range of 0 cm -1 to 2,000 cm -1 . The peak area at a wave number of 810 cm -1 and the peak area at a wave number of 1,720 cm -1 were calculated using the infrared spectrum. As shown in Reference Equation 3, the value obtained by dividing the peak area measured at a wave number of 810 cm -1 of the organic film by the peak area measured at a wave number of 1,720 cm -1 of the organic film can be the "C=C ratio of the organic film".

[0326] [Reference Equation 3]

[0327] [C=C ratio of the organic film] = (peak area of the organic film at a wave number of 810 cm -1 / (peak area of the organic film at a wave number of 1,720 cm -1 )

[0328] Then, the degree of cure was calculated according to Reference Equation 1.

[0329] First degree of cure (Ac): The degree of cure of each polymeric composition prepared in Examples 1 to 6 and Comparative Examples 1 to 6 measured before the storage test was referred to as the "first degree of cure (Ac)".

[0330] Second degree of cure (Bc): The degree of cure of each polymeric composition prepared in Examples 1 to 6 and Comparative Examples 1 to 6 measured after being stored in a sealed state in a tank container at room temperature (25 °C ± 10 °C) for one year was referred to as the "second degree of cure (Bc)".

[0331] Third degree of curing (Cc): The degree of curing of each of the polymerization compositions prepared in Examples 1 to 6 and Comparative Examples 1 to 6, measured after being stored in a sealed state in a tank container at 50°C for one year, is referred to as the "third degree of curing (Cc)".

[0332] The measurement results are shown in Table 6 below.

[0333] [Table 6]

[0334]

[0335]

[0336] In Table 6, the curing index is calculated as the sum of "(|Ac - Bc| / Ac) * 100" and "(|Ac - Cc| / Ac) * 100".

[0337] Curing index = (|Ac - Bc| / Ac) * 100 + (|Ac - Cc| / Ac) * 100

[0338] As can be seen from Table 6, the polymerization compositions according to Examples 1 to 6 have a low curing index, and the degree of curing hardly changes after long-term storage, and is very stable in terms of the degree of curing. On the other hand, it can be seen that the polymerization compositions according to Comparative Examples 1 to 6 have a high curing index, the degree of curing changes greatly after long-term storage, and is unstable in terms of the degree of curing.

[0339] (6) Measurement of shrinkage rate

[0340] Measuring device: Vernier caliper (CD-20CPX from Mitutoyo)

[0341] Light source: UV LED 395nm light source (FE300 3W from Phoseon)

[0342] Light dose: 1,500 mJ / cm 2

[0343] First, 2 g of the polymerization composition was placed in a glass tube having an inner diameter of 11.5 mm and a height of 100 mm. In this case, it can be considered that the diameter of the polymerization composition before curing is 11.5 mm.

[0344] Then, the polymerization composition contained in the glass tube was cured by irradiating with ultraviolet light. Specifically, by using an LED lamp at 5,000 mJ / cm 2The polymerization composition was cured by irradiating light with a wavelength of 395 nm at a dose. After curing, the glass tube was broken to obtain a rod-shaped cured product formed from the polymerization composition. The obtained rod-shaped cured product was aged at room temperature for 30 minutes. Then, the diameter at 10 mm below the rod-shaped cured product was measured. The diameter at 10 mm below the rod-shaped cured product corresponds to the "diameter after curing". Then, using the "diameter before curing" of 11.5 mm and the diameter after curing, the shrinkage rate was calculated according to Reference Equation 4.

[0345] [Reference Equation 4]

[0346]

[0347] The first shrinkage rate (Ad): The shrinkage rate of each polymerization composition prepared in Examples 1 to 6 and Comparative Examples 1 to 6 measured before the storage test was referred to as the "first shrinkage rate (Ad)".

[0348] The second shrinkage rate (Bd): The shrinkage rate of each polymerization composition prepared in Examples 1 to 6 and Comparative Examples 1 to 6 measured after being stored in a canister container in a sealed state at room temperature (25 °C ± 10 °C) for one year was referred to as the "second shrinkage rate (Bd)".

[0349] The third shrinkage rate (Cd): The shrinkage rate of each polymerization composition prepared in Examples 1 to 6 and Comparative Examples 1 to 6 measured after being stored in a canister container in a sealed state at 50 °C for one year was referred to as the "third shrinkage rate (Cd)".

[0350] The measurement results are shown in Table 7 below.

[0351] [Table 7]

[0352]

[0353] In Table 7, the shrinkage index was calculated as the sum of "(|Ad - Bd| / Ad) * 100" + "(|Ad - Cd| / Ad) * 100".

[0354] Shrinkage index = (|Ad - Bd| / Ad) * 100 + (|Ad - Cd| / Ad) * 100

[0355] It can be seen from Table 7 that the polymerization compositions according to Examples 1 to 6 have a low shrinkage index, small shrinkage changes after long-term storage, and are very stable in terms of shrinkage rate. On the other hand, it can be seen that the polymerization compositions according to Comparative Examples 1 to 6 have a high shrinkage index, large shrinkage rate changes after long-term storage, and are unstable in terms of shrinkage rate.

[0356] (7) Measuring surface tension

[0357] Measurement standard: Measured according to the method specified in ISO 304

[0358] Measuring device: Tensiometer K9 from KRUSS

[0359] Measurement mode: O-ring, Max mode

[0360] Measurement method: Place 20 g of the polymer composition into the O-ring using the tensiometer K9 from KRUSS and measure the first surface tension (Ae) in Max mode.

[0361] First surface tension (Ae): The surface tension of each polymer composition prepared in Examples 1 to 6 and Comparative Examples 1 to 6 measured before the storage test is referred to as the "first surface tension (Ae)".

[0362] Second surface tension (Be): The surface tension of each polymer composition prepared in Examples 1 to 6 and Comparative Examples 1 to 6 measured after being stored in a tank container in a sealed state at room temperature (25°C ± 10°C) for one year is referred to as the "second surface tension (Be)".

[0363] Third surface tension (Ce): The shrinkage rate of each polymer composition prepared in Examples 1 to 6 and Comparative Examples 1 to 6 measured after being stored in a tank container in a sealed state at 50°C for one year is referred to as the "third surface tension (Ce)".

[0364] The measurement results are shown in Table 8 below.

[0365] [Table 8]

[0366]

[0367] In Table 8, the surface tension index is calculated as the sum of "(|Ae - Be| / Ae) * 100" + "(|Ae - Ce| / Ae) * 100".

[0368] Surface tension index = (|Ae - Be| / Ae) * 100 + (|Ae - Ce| / Ae) * 100

[0369] It can be seen from Table 8 that the polymer compositions according to Examples 1 to 6 have a low surface tension index, and the surface tension hardly changes after long-term storage, and are very stable in terms of surface tension. On the other hand, it can be seen that the polymer compositions according to Comparative Examples 1 to 6 have a high surface tension index, the surface tension changes greatly after long-term storage, and are unstable in terms of surface tension.

[0370] <Storage change index (ISV)>

[0371] Calculate the storage variation index (ISV) of each of the polymeric compositions prepared in Examples 1 to 6 and Comparative Examples 1 to 6 according to Equation 1 below.

[0372] [Equation 1]

[0373] ISV = (|Aa - Ba| / Aa) * 100 + (|Aa - Ca| / Aa) * 100 + (|Ab - Bb| / Ab) * 100 + (|Ab - Cb| / Ab) * 100 + (|Ac - Bc| / Ac) * 100 + (|Ac - Cc| / Aa) * 100 + (|Ad - Bd| / Ad) * 100 + (|Ad - Cd| / Ad) * 100 + (|Ae - Be| / Ae) * 100 + (|Ae - Ce| / Ae) * 100

[0374] The storage variation index (ISV) of each of the polymeric compositions prepared in Examples 1 to 6 and Comparative Examples 1 to 6 is shown in Table 9 below.

[0375] [Table 9]

[0376] Item Storage Change Index Example 1 10.1 Example 2 16.1 Example 3 15.6 Example 4 16.2 Example 5 15.3 Example 6 16.3 Comparative Example 1 67.7 Comparative Example 2 60.3 Comparative Example 3 18.4 Comparative Example 4 19.4 Comparative Example 5 18.4 Comparative Example 6 18.1

[0377] As can be seen from Table 9, the polymeric compositions according to Examples 1 to 6 have a low storage variation index (ISV) and exhibit excellent long-term storage ability. On the other hand, it can be seen that the polymeric compositions according to Comparative Examples 1 to 6 have a high storage variation index (ISV), exhibit poor long-term storage ability, and are unstable.

[0378] The features, structures, effects, etc. described in the above respective examples can be combined or modified by those skilled in the art of the examples into other examples. Therefore, the content related to such combination and modification should be understood to fall within the scope of the present disclosure.

[0379] [Reference Signs]

[0380] 100: Display device 110: Touch panel

[0381] 510: Substrate 520: Semiconductor layer

[0382] 530: Gate electrode 541: Source electrode

[0383] 542: Drain electrode 570: Organic light-emitting device

[0384] 571: First electrode 572: Organic light-emitting layer

[0385] 573: Second electrode 590: Encapsulation material

[0386] 591: First inorganic membrane 592: Organic membrane

[0387] 593: Second inorganic membrane

Claims

1. A polymerization composition, comprising: a first monomer having an acryloyl group; a second monomer having an acryloyl group and having a viscosity different from that of the first monomer; and a polymerization initiator, Among them, before the storage test, the polymerization composition has a first flexibility (Aa), a first viscosity (Ab), a first degree of curing (Ac), a first shrinkage rate (Ad), and a first surface tension (Ae), after storing the polymerization composition in a sealed state at room temperature (25 °C ± 10 °C) for one year, it has a second flexibility (Ba), a second viscosity (Bb), a second degree of curing (Bc), a second shrinkage rate (Bd), and a second surface tension (Be), after storing the polymerization composition in a sealed state at 50 °C for one year, it has a third flexibility (Ca), a third viscosity (Cb), a third degree of curing (Cc), a third shrinkage rate (Cd), and a third surface tension (Ce), and the storage change index (ISV) of the polymerization composition is 18 or less, wherein the storage change index (ISV) is obtained according to the following Equation 1: [Equation 1] ISV = (|Aa - Ba| / Aa) * 100 + (|Aa - Ca| / Aa) * 100 + (|Ab - Bb| / Ab) * 100 + (|Ab - Cb| / Ab) * 100 + (|Ac - Bc| / Ac) * 100 + (|Ac - Cc| / Aa) * 100 + (|Ad - Bd| / Ad) * 100 + (|Ad - Cd| / Ad) * 100 + (|Ae - Be| / Ae) * 100 + (|Ae - Ce| / Ae) * 100, the first flexibility (Aa) is the modulus (MPa) measured by applying a load of 2.0 mN to an organic film formed by spin - coating the polymerization composition before the storage test onto a glass substrate of 50 mm * 50 mm to a thickness of 8 μm and curing the polymerization composition according to the ASTM E 2546 standard, the first viscosity (Ab) is measured at 25 °C by loading 0.5 mL of the polymerization composition before the storage test into a DV2T viscometer from Brookfield and setting the torque to 50% according to the method specified in ASTM D 2196, the first degree of curing (Ac) is calculated based on the proportion of C = C double bonds in the polymerization composition before the storage test and the proportion of C = C double bonds in the organic film obtained by curing the polymerization composition, the first shrinkage rate (Ad) is calculated based on the change in diameter of the polymerization composition before the storage test contained in a glass tube with an inner diameter of 11.5 mm before and after curing, the first surface tension (Ae) is measured for the polymerization composition before the storage test using a tensiometer K9 from KRUSS with an O - ring in the Max mode according to the method specified in ISO 304, The second flexibility (Ba) is measured in the same manner as the first flexibility (Aa) for a sample collected from the polymeric composition after being stored in a sealed state at room temperature (25 °C ± 10 °C) for one year. The second viscosity (Bb) is measured in the same manner as the first viscosity (Ab) for a sample collected from the polymeric composition after being stored in a sealed state at room temperature (25 °C ± 10 °C) for one year. The second degree of cure (Bc) is measured in the same manner as the first degree of cure (Ac) for a sample collected from the polymeric composition after being stored in a sealed state at room temperature (25 °C ± 10 °C) for one year. The second shrinkage rate (Bd) is measured in the same manner as the first shrinkage rate (Ad) for a sample collected from the polymeric composition after being stored in a sealed state at room temperature (25 °C ± 10 °C) for one year. The second surface tension (Be) is measured in the same manner as the first surface tension (Ae) for a sample collected from the polymeric composition after being stored in a sealed state at room temperature (25 °C ± 10 °C) for one year. The third flexibility (Ca) is measured in the same manner as the first flexibility (Aa) for a sample collected from the polymeric composition after being stored in a sealed state at 50 °C for one year. The third viscosity (Cb) is measured in the same manner as the first viscosity (Ab) for a sample collected from the polymeric composition after being stored in a sealed state at 50 °C for one year. The third degree of cure (Cc) is measured in the same manner as the first degree of cure (Ac) for a sample collected from the polymeric composition after being stored in a sealed state at 50 °C for one year. The third shrinkage rate (Cd) is measured in the same manner as the first shrinkage rate (Ad) for a sample collected from the polymeric composition after being stored in a sealed state at 50 °C for one year. The third surface tension (Ce) is measured in the same manner as the first surface tension (Ae) for a sample collected from the polymeric composition after being stored in a sealed state at 50 °C for one year. Wherein, the water (H2O) concentration of the polymeric composition is 40 ppm or less.

2. The polymeric composition according to claim 1, wherein The first monomer is represented by the following formula 1: [Formula 1] C i H j O k Wherein, i is an integer from 10 to 28, j is an integer from 10 to 54, k is an integer from 1 to 10, and i / k is 2 or more. The second monomer is represented by the following formula 2: [Formula 2] C p H q O r Wherein, p is an integer from 10 to 25, q is an integer from 10 to 40, r is an integer from 1 to 6, and p / r is 2 or more.

3. The polymeric composition according to claim 2, wherein, Satisfies at least one of the relationships "2 ≤ i / k ≤ 8" and "2 ≤ p / r ≤ 8".

4. The polymeric composition according to claim 1, wherein, The viscosity of the first monomer at 25 °C is 1 cPs to 100 cPs, and The viscosity of the second monomer at 25 °C is greater than 100 cPs and less than or equal to 500 cPs.

5. The polymeric composition according to claim 1, wherein Based on the total of 100 parts by weight of the first monomer and the second monomer, the content of the first monomer is 50 parts by weight to 80 parts by weight, and the content of the second monomer is 20 parts by weight to 50 parts by weight.

6. The polymeric composition according to claim 1, wherein, The polymerization initiator has at least one light absorption peak at a wavelength below 500 nm.

7. The polymeric composition according to claim 1, wherein, The first flexibility (Aa) is from 1985 MPa to 2416 MPa, the second flexibility (Ba) is from 1947 MPa to 2390 MPa, and the third flexibility (Ca) is from 1935 MPa to 2375 MPa.

8. The polymeric composition according to claim 1, wherein, At 25 °C, the first viscosity (Ab) is from 19.5 cPs to 22.0 cPs, the second viscosity (Bb) is from 19.8 cPs to 22.2 cPs, and the third viscosity (Cb) is from 19.8 cPs to 23.0 cPs.

9. The polymeric composition according to claim 1, wherein The first degree of curing (Ac) is from 93% to 95%, the second degree of curing (Bc) is from 92% to 94%, and the third degree of curing (Cc) is from 92% to 94%.

10. The polymeric composition according to claim 1, wherein, The first shrinkage rate (Ad) is from 2.5% to 3.0%, the second shrinkage rate (Bd) is from 2.5% to 3.1%, and the third shrinkage rate (Cd) is from 2.5% to 3.1%.

11. The polymeric composition according to claim 1, wherein, The first surface tension (Ae) is from 35.0 mN / m to 35.9 mN / m, the second surface tension (Be) is from 35.2 mN / m to 36.1 mN / m, and the third surface tension (Ce) is from 35.2 mN / m to 36.1 mN / m.

12. An encapsulating material comprising an organic film formed using the polymerization composition according to any one of claims 1 to 11.

13. A display device comprising the encapsulating material according to claim 12.

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