WO2015046880A1 - 경화성 조성물 - Google Patents
경화성 조성물 Download PDFInfo
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- WO2015046880A1 WO2015046880A1 PCT/KR2014/008901 KR2014008901W WO2015046880A1 WO 2015046880 A1 WO2015046880 A1 WO 2015046880A1 KR 2014008901 W KR2014008901 W KR 2014008901W WO 2015046880 A1 WO2015046880 A1 WO 2015046880A1
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
- C08G59/5046—Amines heterocyclic
- C08G59/5053—Amines heterocyclic containing only nitrogen as a heteroatom
- C08G59/5073—Amines heterocyclic containing only nitrogen as a heteroatom having two nitrogen atoms in the ring
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5435—Silicon-containing compounds containing oxygen containing oxygen in a ring
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
- C08L101/02—Compositions of unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
- C08L101/04—Compositions of unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing halogen atoms
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
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- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
- H01L23/293—Organic, e.g. plastic
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/846—Passivation; Containers; Encapsulations comprising getter material or desiccants
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/10—Organic polymers or oligomers
- H10K85/111—Organic polymers or oligomers comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene
Definitions
- the present invention relates to a curable composition, an adhesive film including the same, and an organic electronic device including the same.
- An organic electronic device refers to a device including an organic material layer that generates an exchange of electric charges using holes and electrons, and examples thereof include a photovoltaic device, a rectifier, Transmitters and organic light emitting diodes (OLEDs); and the like.
- organic light emitting diodes have low power consumption, fast response speed, and are advantageous for thinning a display device or lighting, as compared with conventional light sources.
- OLED has excellent space utilization, and is expected to be applied in various fields including various portable devices, monitors, notebooks, and TVs.
- the present invention not only effectively controls moisture, ionic substances, and other foreign substances that may enter the organic electronic device and cause damage to the device, and may cause electrochemical corrosion, and is curable to improve the life and durability of the organic electronic device. It provides a composition and an adhesive film comprising the same.
- the curable composition and the adhesive film including the same according to the present invention may be applied to encapsulating the entire organic electronic device of the organic electronic device.
- the adhesive film may have a single layer or a multilayer structure.
- organic electronic device means an article or device having an element including an organic material layer that generates an exchange of electric charge using holes and electrons between a pair of electrodes facing each other, for example
- the photovoltaic device, a rectifier, a transmitter, and an organic light emitting diode (OLED) may be mentioned, but is not limited thereto.
- the organic electronic device may be an OLED.
- the curable composition includes a curable adhesive resin, and may satisfy the following general formula (1) or (2).
- X is obtained by preparing the curable composition into a film, and then maintaining 50 mg of the film sample at 150 ° C. for 1 hour using Purge & Trap-gas chromatography / mass spectrometry. The amount of volatile organic compounds measured.
- Y in the general formula 2 is the amount of the ionic substance contained in the curable composition, measured according to ASTM D 7359: 2008 with 50 mg of the film sample after the curable composition is made into a film.
- the curable composition of the present invention may satisfy both the general formulas (1) and (2).
- the curable composition is prepared after the curable composition is formed into a film and then maintained for 24 hours at 25 ° C. and 50% relative humidity for 50 mg of the film sample, followed by ASTM D3451-06 (2012
- the water content measured according to (Standard Guide for Testing Coating Powders and Powder Coatings by Coulometric Karl Fischer Titration) may be 0.01% by weight or more. That is, in Formula 1, X is a volatile organic compound measured by volatilization in components having a moisture content of 0.01 wt% or more after holding for 24 hours at 25 ° C. and 50% relative humidity of the curable composition. It may be the amount of.
- X may be the amount of volatile organic compounds volatilized after maintaining the curable composition satisfying the above conditions at 150 ° C. for 1 hour (Purge and Trap).
- the upper limit of the moisture content in the above is not particularly limited, but may be 1 wt% or less.
- the term "component of the curable composition” may be a raw material that is the basis of the curable composition.
- the component of the curable composition may be a curable adhesive resin, a curing agent, a silane coupling agent, a high molecular weight resin, or an organic solvent, which will be described below, but is not limited thereto, and the component constituting the curable composition is not particularly limited.
- Curable compositions of the present invention indirectly contain moisture, volatilized to transfer moisture, or directly volatilized to limit the volatiles contained in the substances that can damage the organic device by damaging the final composition to the device Can be controlled. This is because moisture can cause the most damage to the device of the organic electronic device, thereby controlling physical and chemical damage of the organic electronic device.
- the amount of volatile organic compounds X in the above was measured through a conventional VOC (Volatile Organic Compounds) analyzer. Specifically, toluene is used as a standard reagent, the film sample of about 50 mg is maintained at 150 ° C. for 1 hour, and the volatile organic compounds volatilized by purging and trapping are 1000 ppm or less, 900 ppm or less, 800 ppm or less, It may be 700 ppm or less, 600 ppm or less, 500 ppm or less, 300 ppm or less, or 200 ppm or less.
- VOC Volatile Organic Compounds
- the amount Y of the ionic substance contained in the curable composition measured by the ASTM D 7359: 2008 measurement method may be 1000 ppm or less, 900 ppm or less, 800 ppm or less, 700 ppm or less, 600 ppm or less, or 550 ppm or less.
- the acid and base ionic materials may corrode the wiring of the organic electronic device or may be corroded depending on the encapsulation material. This may cause electrochemical corrosion of the organic electronic device, resulting in dark spots.
- volatile organic compound can be defined as any organic compound present in the gas phase in the atmosphere. Hydrocarbons consisting of only carbon and hydrogen, and halogenated hydrocarbons, nitrogen or sulfur-containing hydrocarbons, such as all organic materials that can exist in the gaseous state at room temperature and pressure, are used as a generic term, and may also include semi-volatile organic compounds in a broad sense.
- the volatile organic compound may be organic solvents, thermal decomposition by-products of the curing agent, or by-products generated by an addition reaction.
- purge and trap refers to gas chromatography (GC) or gas chromatography / mass spectrometry (Gas chromatography) by extracting and concentrating trace amounts of volatile organic compounds present in a sample. It may mean a VOC pretreatment device or method that delivers to Mass spectrometry (GC / MS).
- the use process involves placing a sample containing volatile organic compounds in a small container with air blocking, purging the volatile organic compounds in the sample using a carrier gas and moving them to a trap. In the trap, volatile organic compounds are collected and then heated again to pass these materials through gas chromatography.
- gas chromatography / mass spectrometry means a screening device or a method for separating the contents of a solution in various samples.
- GC / MS is combined by gas chromatography (GC), which is used to separate various compounds, and by mass spectrometry (MS), which measures the atomic mass of materials coming from GC.
- GC gas chromatography
- MS mass spectrometry
- the shape and mass of the holding time for each compound are different.
- GC / MS is linked to a computer that stores a library of specific types of compounds to identify the types of substances compared to libraries that identify compounds in solution as well as concentration. Subsequent investigations after confirming the presence of the compound generally analyze the specific material using GC.
- the volatile organic compound of the present invention may be a material having a vapor pressure of at least 0.01 psi, at least 0.015 psi, at least 0.02 psi, or at least 0.025 psi.
- the upper limit is not particularly limited because all of the materials having high volatility and high vapor pressure are included, but may be 1 psi or less.
- the volatile organic compound of the present invention may have a boiling point of 200 ° C or less, 150 ° C or less, 120 ° C or less, 115 ° C or less, or 100 ° C or less, and the lower limit is not particularly limited, but may be 50 ° C or more.
- the term "ionic material” is not particularly limited as long as it is a material that is likely to corrode wiring of an organic electronic device.
- the ionic material may be halogen ions and chlorine ions.
- halogen ions can cause electrochemical corrosion of the organic electronic device, so that the content thereof can be controlled to the minimum to prevent damage to the organic electronic device.
- the curable composition includes a curable adhesive resin as described above.
- the curable adhesive resin may be appropriately selected to satisfy General Formulas 1 or 2 described above.
- the curable adhesive resin has a water vapor transmission rate (WVTR) in the cured state of 50 g / m 2 ⁇ day or less, preferably 30 g / m 2 ⁇ day or less, more preferably 20 g / m 2 ⁇ day or less, more preferably 15 g / m 2 ⁇ day or less.
- WVTR water vapor transmission rate
- cured state of the curable adhesive resin means that the curable adhesive resin is cured or crosslinked through its reaction with other components, such as alone or with a curing agent, to hold components such as moisture adsorbents and fillers when applied as an encapsulant. And it means the state converted into the state which can exhibit the performance as a structural curable composition.
- the said water vapor transmission rate is the water vapor transmission rate measured with respect to the thickness direction of the said hardened
- the moisture permeability is measured according to ASTM F1249.
- the lower limit of the moisture permeability of the curable adhesive resin may be 0 g / m 2 ⁇ day or 0.01 g / m 2 ⁇ day.
- thermosetting resin means a resin that can be cured through an appropriate heat application or aging process
- photocurable resin means a resin that can be cured by irradiation of electromagnetic waves.
- electromagnetic waves microwaves, infrared (IR), ultraviolet (UV), X-rays and ⁇ -rays, as well as ⁇ -particle beam (proton beam), proton beam (neutron) Particle beams such as neutron beams and electron beams may be included.
- the photocurable resin in the present invention includes a cationic photocurable resin.
- the cationic photocurable resin means a resin that can be cured by cationic polymerization or cation curing reaction induced by irradiation of electromagnetic waves.
- the curable adhesive resin may be a dual curable resin including both the properties of thermosetting and photocuring.
- curable adhesive resin may be cured to exhibit adhesive properties, and may include one or more thermosetting functional groups such as glycidyl group, isocyanate group, hydroxy group, carboxyl group or amide group, or may be an epoxide group or a cyclic ether. and resins containing at least one functional group curable by irradiation of electromagnetic waves such as a (cyclic ether) group, a sulfide group, an acetal group, or a lactone group.
- specific types of the resin may include an acrylic resin, a polyester resin, an isocyanate resin, an epoxy resin, and the like, but is not limited thereto.
- the curable adhesive resin may be a low chlorine grade epoxy resin.
- a high purity epoxy resin having a lower halogen ion content may be used.
- the halogen ion content measured by ASTM D 7359: 2008 is 1000 ppm or less, 800 ppm or less, 600 ppm or less, 500 ppm, 400 ppm or less, or 300 ppm or less.
- the halogen ions may be chlorine ions.
- ionic materials such as halogen ions may corrode the wiring of the organic electronic device, which may cause electrochemical corrosion of the organic electronic device, thereby causing dark spots. Therefore, a volatile substance can be suppressed by using a high purity epoxy resin.
- the epoxy resin may be liquid or semi-solid.
- the curable adhesive resin aromatic or aliphatic; Or an epoxy resin of linear or branched chain type can be used.
- an epoxy resin having an epoxy equivalent of 180 g / eq to 1,000 g / eq may be used as containing two or more functional groups.
- an epoxy resin having an epoxy equivalent in the above range it is possible to effectively maintain properties such as adhesion performance and glass transition temperature of the cured product.
- examples of such epoxy resins include cresol novolac epoxy resins, bisphenol A epoxy resins, bisphenol A novolac epoxy resins, phenol novolac epoxy resins, tetrafunctional epoxy resins, biphenyl epoxy resins, and triphenol methane types.
- a kind or mixture of an epoxy resin, an alkyl modified triphenol methane epoxy resin, a naphthalene type epoxy resin, a dicyclopentadiene type epoxy resin, or a dicyclopentadiene modified phenol type epoxy resin is mentioned.
- an epoxy resin containing a cyclic structure in a molecular structure can be used, and more preferably an epoxy resin containing an aromatic group (for example, a phenyl group) can be used.
- an epoxy resin containing an aromatic group for example, a phenyl group
- the cured product may have excellent thermal and chemical stability while exhibiting low moisture absorption, thereby improving reliability of the organic electronic device encapsulation structure.
- aromatic group-containing epoxy resin examples include biphenyl type epoxy resin, dicyclopentadiene type epoxy resin, naphthalene type epoxy resin, dicyclopentadiene modified phenol type epoxy resin, cresol type epoxy resin, Bisphenol-based epoxy resins, xylox-based epoxy resins, polyfunctional epoxy resins, phenol novolac epoxy resins, triphenol methane-type epoxy resins and alkyl-modified triphenol methane epoxy resins, such as one or a mixture of two or more, but is not limited thereto. no.
- a silane-modified epoxy resin preferably a silane-modified epoxy resin having an aromatic group
- the epoxy resin when an epoxy resin modified with silane and structurally having a silane group is used, the adhesion of the organic electronic device to the glass substrate or the substrate inorganic material can be maximized, and the moisture barrier property, durability and reliability can be improved.
- a silane-modified epoxy resin is used. It is effective.
- the silane-modified epoxy resin may be a high purity epoxy resin having a lower halogen ion content.
- the content of halogen ions measured by ASTM D 7359: 2008 is 1000 ppm or less, 800 It may be a silane-modified epoxy resin that is at most ppm, at most 600 ppm, at most 500 ppm, at most 400 ppm, or at most 300 ppm. Accordingly, the above-described volatile organic compounds can be effectively controlled.
- the specific kind of the above epoxy resin that can be used in the present invention is not particularly limited, and such a resin can be easily obtained from a place of purchase such as, for example, National Chemical.
- the curable composition of the present invention may include one or more selected from the group consisting of a curing agent, a silane coupling agent and an organic solvent.
- the volatile organic compounds are introduced into the organic electronic device to damage the device, and the materials that can cause electrochemical corrosion include organic solvents, and by controlling such organic solvents, organic volatilization and trace element generation of the curable composition is prevented. Can be lowered.
- the organic solvent may have a boiling point of 100 ° C. or less, 95 ° C. or less, 90 ° C. or less, 85 ° C. or less, or 80 ° C. or less, and the lower limit is not particularly limited, but may be 50 ° C. or more. Specifically, it may include a hydrocarbon solvent, alcohol, ester compound, ketone or ether compound.
- examples of the solvent that can be used in the present invention include methyl ethyl ketone (MEK), acetone, toluene, dimethylformamide (DMF), methyl cellosolve (MCS), tetrahydrofuran (THF), and N-.
- MEK methyl ethyl ketone
- DMF dimethylformamide
- MCS methyl cellosolve
- THF tetrahydrofuran
- N- Methyl pyrrolidone
- ECS ethyl cellosolve
- the curable composition of the present invention may further include a curing agent capable of reacting with the curable adhesive resin to form a matrix such as a crosslinked structure or the like.
- a curing agent capable of reacting with the curable adhesive resin to form a matrix such as a crosslinked structure or the like.
- the specific kind of curing agent that can be used in the present invention is not particularly limited, and may be appropriately selected according to the type of curable adhesive resin used or the functional group included in the resin, and in particular, there are few by-products or unreacted substances in VOC analysis. desirable.
- a general curing agent for epoxy resins known in the art may be used as the curing agent.
- various amine compounds, imidazole compounds, and phenols may be used.
- One kind or two or more kinds of compounds, phosphorus compounds or acid anhydride compounds may be used, but is not limited thereto.
- the curing agent may be an imidazole compound in terms of minimization of reaction by-products and reaction temperature.
- the curable composition of the present invention may contain a curing agent, for example, in an amount of 0.5 parts by weight to 20 parts by weight, preferably 1 part by weight to 10 parts by weight, based on 100 parts by weight of the thermosetting resin.
- a curing agent for example, in an amount of 0.5 parts by weight to 20 parts by weight, preferably 1 part by weight to 10 parts by weight, based on 100 parts by weight of the thermosetting resin.
- the content is only one example of the present invention. That is, in the present invention, the content of the curing agent may be changed according to the type and content of the curable adhesive resin or functional group, or the matrix structure or the crosslinking density to be implemented.
- the curing agent of the present invention preferably contains less heat by-products, unreacted substances, or addition reactants in VOC analysis.
- the curing agent may be an imidazole curing agent that starts curing at 50 ° C to 170 ° C.
- the imidazole compound may be 2-ethylimidazole, 2-ethyl-4-methylimidazole, 2-aminobenzeneimidazole, 2-amino-4-imidazolecarboxamide, 2-aminoimid.
- Dazole sulphate 2- (trifluoromethyl) benzimidazole, 1-benzimidazole, 4,5-diphenyl-2-imidazolesol, 2-methyl-5-nitroimidazole, 4-nitroimidazole , 2,4,5-tribromoimidazole, 4-phenylimidazole, 2- (2-pyridyl) benzimidazole, 2-benzimidazolemethanol, 4-amino-5-imidazolecarboxamide hydro Chloride, 2- (aminomethyl) benzimidazole dihydrochloride, 5-chloro-2- (trichloromethyl) benzimidazole, 4-methylimidazole, 4-methyl-5-imidazolecarboxylate, 4 -(Hydroxymethyl) imidazole hydrochloride, 4-imidazole acetic acid, 2-phenylimidazole, 4-methyl-5-imidazolemethanol hydrochloride, 2-ethylimidazole, 4,5-imidazole
- the curing agent may include a first curing agent at which curing begins at 50 ° C. to 120 ° C. and / or a second curing agent at which curing starts above 120 ° C., up to 170 ° C. or less. Therefore, the second curing agent can be used alone.
- a curing agent of the intermediate speed at which curing proceeds at about 100 ° C. and a curing agent at a slow speed at which curing starts at about 150 ° C. process speed according to processability and storage stability and curing rate can be controlled.
- the storage stability may be lowered and thermal stability during the process.
- the first curing agent that starts curing at 50 ° C. to 120 ° C.
- 2-undecylimidazole 2-heptadecylimidazole, 2-phenylimidazole, 2-phenyl 4-methylimidazole (2-phenyl-4-methylimidazole), 1-benzyl-2-phenylimidazole, 1-cyanoethyl-2-methylimidazole, 1-cyanoethyl-2-ethyl And one or more selected from the group consisting of 4-methylimidazole, 1-cyanoethyl-2-undecylimidazole, and 2-phenylimidazolin.
- the second curing agent that starts to cure above 120 ° C and below 170 ° C is 2-phenyl-4-methyl-5-hydroxyimidazole, 1-cyanoethyl-2-phenylimidazole, 1-cyano Ethyl-2-undecylimidazolium-trimelitate, 2,4-diamino-6 [2'-undecylimidazolyl- (1 ')]-ethyl-s-triazine, 2,4-dia Mino-6- [2'-ethyl-4'-methylimidazolyl- (1 ')]-ethyl-s-triazine, 1-cyano-2-phenylimidazolium-trimelitate, 2-phenyl And at least one selected from the group consisting of imidazole isocyanuric acid adduct and 1-benzyl-2-phenylimidazole hydrobromide.
- the first hardener may be included in an amount of 0.1 to 20 parts by weight based on 100 parts by weight of the resin
- the second hardener may be included in an amount of 0.1 to 20 parts by weight based on 100 parts by weight of the resin.
- the curable composition of the present invention may further comprise a curing catalyst.
- the curing catalyst is not limited as long as there are few by-products, unreacted substances or addition reactants by heat during VOC analysis.
- tertiary amines are preferable.
- the curing catalyst is triethylenediamine, benzyldimethylamine, triethanolamine, dimethylaminoethanol, tris (dimethylaminomethyl) phenol, 2-methylimida 2-methylimidazole, 2-phenylimidazole, 2-phenyl-4-methylimidazole, and 2-heptadecylimidazole (2- heptadecylimidazole).
- the curable composition of the present invention may further comprise a silane coupling agent.
- the silane coupling agent improves the adhesiveness and adhesion stability of the adhesive, thereby improving heat resistance and moisture resistance, and also improves the adhesion reliability even when left for a long time in harsh conditions.
- the silane coupling agent since the silane coupling agent generates by-products of the alcohol component by heat, it is preferable to minimize the content within the scope of the present invention.
- silane coupling agent for example, gamma-glycidoxypropyl triethoxy silane, gamma-glycidoxypropyl trimethoxy silane, gamma-glycidoxypropyl methyldiethoxy silane, gamma-glycidoxypropyl tri Ethoxy silane, 3-mercaptopropyl trimethoxy silane, vinyltrimethoxysilane, vinyltriethoxy silane, gamma-methacryloxypropyl trimethoxy silane, gamma-methacryloxy propyl triethoxy silane, gamma- Aminopropyl trimethoxy silane, gamma-aminopropyl triethoxy silane, 3-isocyanato propyl triethoxy silane, gamma-acetoacetatepropyl trimethoxysilane, gamma-acetoacetatepropyl triethoxy silane, beta- Cyanoacet
- the curable composition comprises less than 2 parts by weight, 0.01 parts by weight to 1.9 parts by weight, 0.01 parts by weight to 1.8 parts by weight, 0.01 parts by weight to 1.5 parts by weight or 0.01 parts by weight to 1.3 parts by weight of the silane coupling agent based on 100 parts by weight of the curable adhesive resin. It can be included as a wealth.
- the silane coupling agent is included in an amount of 2 parts by weight or more, by-products of the alcohol component from the silane coupling agent may cause dark spots of the organic device, and the occurrence frequency of bubbles may increase during bonding and curing.
- the curable composition of this invention can contain a moisture adsorbent as needed.
- moisture adsorbent may be used as a generic term for components that can adsorb or remove moisture or moisture introduced from the outside through physical or chemical reactions. That is, it means a moisture reactive adsorbent or a physical adsorbent, and mixtures thereof may also be used.
- the moisture reactive adsorbent chemically reacts with moisture, moisture, or oxygen introduced into the adhesive film including the curable composition to adsorb moisture or moisture.
- the physical adsorbent can inhibit the penetration by lengthening the movement path of moisture or moisture that penetrates into the encapsulation structure to be described later, and block the moisture and moisture through interaction with the matrix structure of the curable adhesive resin and the moisture reactive adsorbent. You can maximize your sex.
- the specific kind of water adsorbent that can be used in the present invention is not particularly limited.
- metal powder such as alumina, metal oxide, metal salt or phosphorus pentoxide (P 2 O 5 ), or the like
- P 2 O 5 phosphorus pentoxide
- the physical adsorbent include silica, zeolite, titania, zirconia, montmorillonite, and the like.
- the metal oxides include lithium oxide (Li 2 O), sodium oxide (Na 2 O), barium oxide (BaO), calcium oxide (CaO), magnesium oxide (MgO), and the like.
- Examples include lithium sulfate (Li 2 SO 4 ), sodium sulfate (Na 2 SO 4 ), calcium sulfate (CaSO 4 ), magnesium sulfate (MgSO 4 ), cobalt sulfate (CoSO 4 ), gallium sulfate (Ga 2 (SO 4 ) 3 ), sulfates such as titanium sulfate (Ti (SO 4 ) 2 ) or nickel sulfate (NiSO 4 ), etc., calcium chloride (CaCl 2 ), magnesium chloride (MgCl 2 ), strontium chloride (SrCl 2 ), yttrium chloride (YCl 3 ) , Copper chloride (CuCl 2 ), cesium fluoride (CsF), tantalum flu
- a water adsorbent such as the metal oxide can be blended into the composition in a state of being properly processed.
- the adhesive film made of the above-mentioned curable composition in the form of a film may be formed into a thin film having a thickness of 30 ⁇ m or less according to the type of organic electronic device to be applied, and in this case, a grinding step of the moisture absorbent is required.
- a process such as a three roll mill, bead mill or ball mill may be used.
- the curable composition of the present invention may comprise a moisture adsorbent in an amount of 0 to 100 parts by weight, 1 to 90 parts by weight, 5 to 80 parts by weight or 10 to 50 parts by weight with respect to 100 parts by weight of the curable adhesive resin.
- the moisture adsorbent may not be included as an optional component, but preferably, by controlling the content of the moisture adsorbent to 5 parts by weight or more, the cured product may exhibit excellent moisture and moisture barrier properties.
- the content of the moisture adsorbent to 100 parts by weight or less, while forming the sealing structure of the thin film, it is possible to exhibit excellent moisture barrier properties.
- a unit “weight part” means the weight ratio between each component.
- the curable composition of the present invention may further comprise a high molecular weight resin.
- the high molecular weight resin may serve to improve moldability, for example, when molding the composition of the present invention into a film or sheet shape.
- it may serve as a high temperature viscosity regulator to control the flowability during the hot-melting process.
- the kind of high molecular weight resin that can be used in the present invention is not particularly limited as long as it has compatibility with other components such as the above curable adhesive resin.
- the organic electronic device may be affected, and thus high purity low chlorine grade high molecular weight resin may be used.
- the high molecular weight resin may contain less than 1000ppm, less than 900ppm, less than 500ppm, less than 700ppm, less than 600ppm, or less than 550ppm, the halogen ion content measured by ASTM D 7359: 2008, in one example May be a chlorine ion.
- high molecular weight resins that can be used are resins having a weight average molecular weight of 20,000 or more, such as phenoxy resins, acrylate resins, high molecular weight epoxy resins, ultra high molecular weight epoxy resins, high polarity functional group-containing rubbers and high One kind or a mixture of two or more kinds such as a high polarity functional group-containing reactive rubber, but is not limited thereto.
- the content is not particularly limited to be adjusted according to the desired physical properties.
- the high molecular weight resin is 20 parts by weight to 200 parts by weight, preferably 20 parts by weight to 150 parts by weight, and more preferably 30 parts by weight to 100 parts by weight with respect to 100 parts by weight of the curable adhesive resin. It may be included in an amount by weight.
- the content of the high molecular weight resin is controlled to 200 parts by weight or less, effectively maintaining compatibility with each component of the resin composition, and may also serve as an adhesive.
- the curable composition of the present invention also provides additional fillers, leveling agents, dispersants, antifoams, UV stabilizers, and antioxidants to improve the durability of the cured product in a range in which less heat by-products, unreacted substances or addition reactions occur during VOC analysis. It may further include an additive such as.
- the present invention also relates to an adhesive film comprising the curable composition described above.
- the structure of the adhesive film of this invention contains the said curable composition, it will not restrict
- the adhesive film of the present invention may further include a base film or a release film (hereinafter, may be referred to as "second film") formed on the curable composition.
- the specific kind of the said 1st film which can be used by this invention is not specifically limited.
- a general polymer film of this field can be used as the first film.
- Ethylene-vinyl acetate film, ethylene-propylene copolymer film, ethylene-ethyl acrylate copolymer film, ethylene-methyl acrylate copolymer film, polyimide film and the like can be used.
- an appropriate release treatment may be performed on one side or both sides of the base film or the release film of the present invention.
- Alkyd-based, silicone-based, fluorine-based, unsaturated ester-based, polyolefin-based, or wax-based may be used as an example of the release agent used in the release treatment of the base film, and among these, it is preferable to use an alkyd-based, silicone-based, or fluorine-based release agent in terms of heat resistance. Preferred, but not limited to.
- the kind of 2nd film (Hereinafter, a "cover film” may be called.) Which can be used by this invention is not specifically limited, either.
- the second film the same or different kind as the first film can be used within the range exemplified in the above-described first film.
- an appropriate release treatment may also be performed on the second film.
- the thickness of the base film or the release film (first film) as described above is not particularly limited and may be appropriately selected depending on the application to be applied.
- the thickness of the first film may be about 10 ⁇ m to 500 ⁇ m, preferably about 20 ⁇ m to 200 ⁇ m. If the thickness is less than 10 ⁇ m, deformation of the base film may occur easily during the manufacturing process. If the thickness is more than 500 ⁇ m, the economy is inferior.
- the thickness of the second film in the present invention is also not particularly limited. In this invention, you may set the thickness of the said 2nd film similarly to a 1st film, for example. In the present invention, the thickness of the second film can also be set relatively thinner than the first film in consideration of processability and the like.
- the thickness of the curable composition contained in the adhesive film of the present invention is not particularly limited and may be appropriately selected according to the following conditions in consideration of the use to which the film is applied.
- the method of manufacturing such an adhesive film is not specifically limited.
- a third step of additionally compressing the base film or the release film on the coating liquid dried in the second step may be further performed.
- the first step of the present invention is to prepare a coating solution by dissolving or dispersing the above-mentioned curable composition in a suitable solvent.
- the content of the epoxy resin and the like contained in the coating liquid may be appropriately controlled as desired.
- the kind of the solvent used for preparing the coating liquid is not particularly limited. However, if the drying time of the solvent is too long, or if drying at a high temperature is required, problems may occur in terms of workability or durability of the adhesive film, so that a solvent having a volatilization temperature of 200 ° C or less, 130 ° C or less or 100 ° C or less Preference is given to using. In the present invention, in consideration of film formability, a small amount of a solvent having a volatilization temperature of the above range or more can be mixed and used.
- solvent examples include methyl ethyl ketone (MEK), acetone, toluene, dimethylformamide (DMF), methyl cellosolve (MCS), tetrahydrofuran (THF), and N-methylpyrrolidone (NMP) or ethyl cellosolve (ECS) and the like, or a mixture of two or more, and the like, but is not limited thereto.
- MEK methyl ethyl ketone
- DMF dimethylformamide
- MCS methyl cellosolve
- THF tetrahydrofuran
- NMP N-methylpyrrolidone
- ECS ethyl cellosolve
- the method of applying the coating liquid to the base film or the release film in the first step of the present invention is not particularly limited, for example, knife coat, roll coat, spray coat, gravure coat, curtain coat, comma coat or lip Known methods such as coats and the like can be used without limitation.
- the second step of the present invention is to dry the coating solution coated in the first step, to form an adhesive layer containing a curable adhesive resin. That is, in the second step of the present invention, the adhesive layer may be formed by heating and removing the solvent by heating the coating solution applied to the film. At this time, the drying conditions are not particularly limited, for example, the drying may be performed for 1 to 10 minutes at a temperature of 70 °C to 200 °C.
- a third step of pressing an additional base film or a release film on the curable composition formed on the film may also be further performed after the second step.
- Such a third step of the present invention may be carried out by coating an additional release film or base film (cover film or second film) onto the dried adhesive by hot roll lamination or press process after coating on the film.
- the third step may be performed by a hot roll lamination method in terms of the possibility and efficiency of the continuous process, wherein the process is about 0.1 kgf / cm 2 to 10 kgf / cm 2 at a temperature of about 10 ° C. to 100 ° C. It can be carried out at a pressure of.
- the invention also provides a substrate; An organic electronic device formed on the substrate; And it relates to an organic electronic device comprising the above-mentioned adhesive film for sealing the organic electronic device.
- the adhesive film may cover the entire surface of the organic electronic device.
- the organic electronic device in the present invention may be an organic light emitting diode.
- the organic electronic device may further include a protective film protecting the organic electronic device between the adhesive film and the organic electronic device.
- the present invention also relates to a method of manufacturing an organic electronic device, comprising applying an adhesive film including the above-mentioned curable composition to a substrate on which an organic electronic device is formed to cover the organic electronic device.
- the manufacturing method may further comprise curing the adhesive film comprising the curable composition.
- the applying of the adhesive film to the organic electronic device may be performed by hot roll lamination, hot pressing, or vacuum pressing of the adhesive film, and is not particularly limited.
- the applying of the adhesive film to the organic electronic device may be performed at a temperature of 50 ° C. to 90 ° C., and the curing step may be performed by heating to a temperature range of 70 ° C. to 110 ° C. or by irradiating UV. have.
- a transparent electrode is formed on a substrate 21 such as glass or a polymer film by vacuum deposition or sputtering, and an organic material layer is formed on the transparent electrode. do.
- the organic material layer may include a hole injection layer, a hole transport layer, a light emitting layer, an electron injection layer and / or an electron transport layer.
- a second electrode is further formed on the organic material layer.
- the above-described adhesive film 12 is applied to cover all of the organic electronic device 23 on the organic electronic device 23 on the substrate 21.
- the method of applying the adhesive film 12 is not particularly limited, and for example, transfer the curable composition of the adhesive film of the present invention to the upper portion of the organic electronic device 23 formed on the substrate 21 in advance.
- the cover substrate (ex. Glass or polymer film) 22 may be applied by a method such as heating or pressing.
- heat While applying it can be transferred onto the cover substrate 22 using a vacuum press or a vacuum laminator or the like.
- the adhesion force or the adhesive force of the adhesive film 12 may decrease, so that the process temperature is controlled to about 100 ° C. or less and the process time is within 5 minutes. Do.
- a vacuum press or a vacuum laminator may be used. The temperature conditions at this stage can be set as described above, and the process time is preferably within 10 minutes.
- an additional curing process may be performed on the adhesive film obtained by compressing the organic electronic device.
- the curing process (main curing) may be performed in, for example, a heating chamber or a UV chamber. Conditions in the present curing may be appropriately selected in consideration of the stability of the organic electronic device.
- the above-described manufacturing process is only one example for encapsulating the organic electronic device of the present invention, and the process order or process conditions may be freely modified.
- the present invention transfers the adhesive film 12 of the present invention to the organic electronic device 23 on the substrate 21 first, and then presses the cover substrate 22 in the order of the transfer and the pressing process. You can change it in a way.
- the adhesive film 12 may be applied, and then the cover substrate 22 may be omitted and cured.
- the curable composition of the present invention is applied as a film for encapsulating an organic electronic device, not only to protect the device, but also to prevent damage to the device from the composition itself and from moisture, ionic materials, and other foreign matters, and By effectively blocking chemical corrosion, the life and durability of the organic electronic device can be improved.
- FIG. 1 is a cross-sectional view illustrating an organic electronic device according to one example of the present invention.
- the solution prepared above was applied to the release surface of the release PET using a comma coater, and dried at 110 ° C. for 3 minutes in a dryer to form an adhesive film having a thickness of 20 ⁇ m.
- An adhesive film was prepared in the same manner as in Example 1 except that the low chlorine BPA type epoxy was changed to a silane-modified epoxy resin (KSR-177) and no silane coupling agent was added.
- An adhesive film was prepared in the same manner as in Example 1, except that the imidazole curing agent 2PZ was changed to C11ZA (shikoku), which has a high curing start temperature.
- An adhesive film was prepared in the same manner as in Example 1 except that the low chlorine BPA type epoxy was changed to an epoxy resin (Epiclon 840) and 3 phr of a reactive diluent (PG-202, Kukdo Chemical) was added.
- Samples prepared in films in Examples and Comparatives were weighed around 50 mg, purged and trapped at 150 ° C. for 1 hour, and then total volatilization was measured using GC-MS. The measured volatilization quantifies toluene as the standard reagent.
- a device capable of being tested for lighting is deposited on a glass substrate.
- the coated sheet-like adhesive film was thermally laminated onto the encapsulated glass substrate, and then vacuum-pressed for 3 minutes while pressing the substrate at a pressure of 5 kg / cm 2 while heating the substrate at 80 ° C.
- the adhered samples are thermoset in an oven at 100 ° C. for 2 hours. Dark spots were observed in the thermoset samples at 85 ° C. 85% RH constant temperature and constant humidity conditions. Check for and if there are no dark spots generated by observing for 300 hours.
- Evaluation method wiring corrosion and bubble occurrence
- the device is deposited on a glass substrate.
- the coated sheet-like adhesive film was thermally laminated onto the encapsulated glass substrate, and then vacuum-pressed for 3 minutes while pressing the substrate at a pressure of 5 kg / cm 2 while heating the substrate at 80 ° C.
- the adhered samples are thermoset in an oven at 100 ° C. for 2 hours. After applying the adhesive film to the organic electronic device as described above, it was visually confirmed whether the wiring corrosion and bubble generation.
- Example 1 As shown in Table 1, in the case of Example 1 using a low chlorine BPA type epoxy resin, a small amount of the silane coupling agent, both volatile organic compounds and ionic substances were effectively suppressed. In Example 2 using no silane coupling agent and using a silane-modified epoxy resin, the amount of alcoholic volatiles that greatly affected the damage of the organic device was reduced. In addition, in Example 3 in which the imidazole curing agent was changed, the other conditions were the same, and the storage stability and the thermal stability in the process were improved due to the curing temperature control.
- Comparative Example 1 using a commonly used epoxy resin, a large amount of volatile organic compounds and ionic substances were generated, and 2 parts by weight of a silane coupling agent was used, and Comparative Example 2 using xylene as an organic solvent was used as a volatile organic compound. A large amount of compound occurred.
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Abstract
Description
VOCs(ppm) | 이온성 물질(ppm) | 다크스팟 | 기타(배선부식 및 버블) | |
실시예 1 | 193 | 510 | 없음 | 양호 |
실시예 2 | 156 | 675 | 없음 | 양호 |
실시예 3 | 164 | 509 | 없음 | 양호 |
비교예 1 | 1183 | 1288 | 발생 | 배선 부식 |
비교예 2 | 1567 | 555 | 발생 | 합착 경화시 버블발생 |
Claims (17)
- 경화성 접착 수지를 포함하고, 하기 일반식 1 및 2를 만족하는 경화성 조성물:[일반식 1]X ≤ 1000 ppm[일반식 2]Y ≤ 1000 ppm,상기 일반식 1에서 X는, 상기 경화성 조성물을 필름으로 제조한 후, 50mg의 상기 필름 샘플을 퍼지트랩(Purge & Trap)-기체 크로마토그래피/질량 분석법을 이용하여 150℃에서 1시간 동안 유지한 후, 측정한 휘발성 유기화합물의 양이고,상기 일반식 2에서 Y는 상기 경화성 조성물을 필름으로 제조한 후, 50mg의 상기 필름 샘플로 ASTM D 7359 : 2008에 따라 측정한, 상기 경화성 조성물이 함유하고 있는 이온성 물질의 양이다.
- 제 1 항에 있어서, 경화성 조성물을 필름으로 제조한 후, 50mg의 상기 필름 샘플에 대해서 25℃ 및 50% 상대 습도의 조건에서 24시간 동안 유지한 후 ASTM D3451-06(2012)에 따라 측정한 수분 함량이 0.01 중량% 이상인 경화성 조성물.
- 제 1 항에 있어서, 이온성 물질은 할로겐 이온인 경화성 조성물.
- 제 1 항에 있어서, 경화성 접착 수지는 글리시딜기, 이소시아네이트기, 히드록시기, 카르복실기, 아미드기, 에폭사이드기, 고리형 에테르기, 설파이드기, 아세탈기 및 락톤기로부터 선택되는 하나 이상의 경화성 관능기를 포함하는 경화성 조성물.
- 제 1 항에 있어서, 경화성 접착 수지가 실란 변성 에폭시 수지인 경화성 조성물.
- 제 1 항에 있어서, 경화성 접착 수지는 ASTM D 7359 : 2008에 따라 측정한 할로겐 이온의 함량이 1000ppm이하인 에폭시 수지인 경화성 조성물.
- 제 1 항에 있어서, 비점이 100 ℃ 이하인 유기 용제를 추가로 포함하는 경화성 조성물.
- 제 1 항에 있어서, 경화제를 추가로 포함하는 경화성 조성물.
- 제 8 항에 있어서, 경화제는 경화성 접착 수지 100 중량부에 대하여 0.5 내지 20 중량부로 포함되는 경화성 조성물.
- 제 8 항에 있어서, 경화제는 50℃ 내지 170℃에서 경화가 시작되는 이미다졸 경화제인 경화성 조성물.
- 제 1 항에 있어서, 경화성 접착 수지 100중량부에 대하여 2 중량부 미만의 실란 커플링제를 추가로 포함하는 경화성 조성물.
- 제 1 항에 있어서, ASTM D 7359 : 2008에 따라 측정한 할로겐 이온의 함량이 1000ppm 이하이고, 중량평균 분자량이 2만 이상인 고분자량 수지를 추가로 포함하는 경화성 조성물.
- 제 12 항에 있어서, 고분자량 수지는 경화성 접착 수지 100 중량부에 대하여, 20 중량부 내지 200 중량부로 포함되는 경화성 조성물.
- 제 1 항에 따른 경화성 조성물을 포함하는 접착 필름.
- 기판; 상기 기판 상에 형성된 유기전자소자; 및 상기 유기전자소자를 봉지하는 제 14 항에 따른 접착 필름을 포함하는 유기전자장치.
- 제 15 항에 있어서, 상기 유기전자소자가 유기발광다이오드인 유기전자장치.
- 상부에 유기전자소자가 형성된 기판에 제 14 항에 따른 접착 필름이 상기 유기전자소자를 커버하도록 적용하는 단계를 포함하는 유기전자장치의 제조 방법.
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US14/767,182 US10457842B2 (en) | 2013-09-24 | 2014-09-24 | Curable composition |
EP14847456.2A EP2977406B1 (en) | 2013-09-24 | 2014-09-24 | Curable composition |
JP2016544296A JP6350953B2 (ja) | 2013-09-24 | 2014-09-24 | 硬化性組成物 |
CN201480019429.3A CN105073884B (zh) | 2013-09-24 | 2014-09-24 | 可固化组合物 |
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EP (1) | EP2977406B1 (ko) |
JP (1) | JP6350953B2 (ko) |
KR (1) | KR101574023B1 (ko) |
CN (1) | CN105073884B (ko) |
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KR101805298B1 (ko) * | 2016-03-22 | 2017-12-05 | 주식회사 케이씨씨 | 열경화형 접착 필름 |
CN114621634B (zh) | 2016-12-09 | 2023-07-14 | 株式会社Lg化学 | 封装组合物、包括该组合物的有机电子器件及其制造方法 |
CA3083813C (en) * | 2017-12-29 | 2022-08-09 | Xylo Technologies Ag | Laminate with synchronous structure |
CN111205801A (zh) * | 2020-01-17 | 2020-05-29 | 天津瑞宏汽车配件制造有限公司 | 用于集成电路制造的低卤素低收缩率环氧树脂液体封装料 |
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See also references of EP2977406A4 |
Also Published As
Publication number | Publication date |
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EP2977406A1 (en) | 2016-01-27 |
KR101574023B1 (ko) | 2015-12-02 |
EP2977406A4 (en) | 2016-12-07 |
KR20150033581A (ko) | 2015-04-01 |
US20150368528A1 (en) | 2015-12-24 |
CN105073884B (zh) | 2018-01-30 |
US10457842B2 (en) | 2019-10-29 |
TW201529782A (zh) | 2015-08-01 |
CN105073884A (zh) | 2015-11-18 |
JP6350953B2 (ja) | 2018-07-04 |
JP2016531996A (ja) | 2016-10-13 |
TWI602892B (zh) | 2017-10-21 |
EP2977406B1 (en) | 2024-01-24 |
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