WO2022182193A1 - 점착제 - Google Patents
점착제 Download PDFInfo
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- WO2022182193A1 WO2022182193A1 PCT/KR2022/002781 KR2022002781W WO2022182193A1 WO 2022182193 A1 WO2022182193 A1 WO 2022182193A1 KR 2022002781 W KR2022002781 W KR 2022002781W WO 2022182193 A1 WO2022182193 A1 WO 2022182193A1
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- sensitive adhesive
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Images
Classifications
-
- 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
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/08—Homopolymers or copolymers of acrylic acid esters
-
- 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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
-
- 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
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
-
- 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
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/10—Homopolymers or copolymers of methacrylic acid esters
-
- 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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/124—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
Definitions
- This application relates to an adhesive.
- a flexible device is a device of a new concept, and examples thereof include a so-called foldable device or a rollable device.
- the pressure-sensitive adhesive layer applied to the foldable device is repeatedly folded and then unfolded, or unwound after being wound.
- the layer applied to the foldable device is required to effectively follow the repeated deformation and to be able to recover to its original shape even though the force applied during the deformation disappears.
- the pressure-sensitive adhesive layer may be desirable for the pressure-sensitive adhesive layer to have an elastic modulus of a certain level or higher. is not easy
- An object of the present application is to provide an adhesive suitable for a foldable device.
- the present application provides an adhesive capable of forming a pressure-sensitive adhesive layer that exhibits a low elastic modulus suitable for a foldable device at a low temperature, a relatively high elastic modulus at a high temperature, and at the same time exhibits an appropriate level of adhesive force (peel force). serve one purpose.
- Another object of the present application is to provide a pressure-sensitive adhesive film or a flexible device including the pressure-sensitive adhesive.
- the physical property is a physical property measured at room temperature.
- room temperature is a temperature in a state in which it is not particularly heated and reduced, and any one temperature within the range of about 10°C to 30°C, for example, about 15°C or more, 18°C or more, 20°C or more, or about 23°C. It may mean a temperature of about 27° C. or less while being more than °C.
- the unit of temperature referred to in this specification is °C.
- the physical property is a physical property measured at normal pressure.
- atmospheric pressure is a pressure in a state that is not particularly pressurized and decompressed, and usually means a pressure of about 740 mmHg to 780 mmHg, which is the atmospheric pressure level.
- the physical property is a physical property measured at natural humidity at room temperature and atmospheric pressure.
- the pressure-sensitive adhesive of the present application may include an acrylic copolymer.
- copolymer refers to a result of a polymerization reaction of a monomer mixture.
- monomer unit refers to the state of the monomer after the polymerization reaction.
- acrylic copolymer is a copolymer including an acrylic monomer unit as a main component.
- the main component is, in the acrylic copolymer, the proportion of the acrylic monomer unit is 50% by weight or more, 55% by weight or more, 60% by weight or more, 65% by weight or more, 70% by weight or more, 75% by weight or more, 80% by weight or more or more, 85% by weight or more, 90% by weight or more, or 95% by weight or more.
- the upper limit of the content of the acrylic monomer unit in the acrylic copolymer There is no particular limitation on the upper limit of the content of the acrylic monomer unit in the acrylic copolymer.
- the acrylic copolymer may include 100 wt% or less, 99 wt% or less, 98 wt% or less, 97 wt% or less, 96 wt% or less, or 95 wt% or less of the acrylic monomer unit.
- acrylic monomer means acrylic acid or methacrylic acid or a derivative of acrylic acid or methacrylic acid (eg, acrylic acid ester or methacrylic acid ester).
- (meth)acryl means acryl or methacryl.
- the acrylic copolymer When the acrylic copolymer is crosslinkable in the pressure-sensitive adhesive of the present application, the acrylic copolymer may be in a state before crosslinking or after crosslinking, and may be in a crosslinked state as appropriate. Accordingly, the pressure-sensitive adhesive may include the cross-linked acrylic copolymer.
- the pressure-sensitive adhesive may include the acrylic copolymer as a main component.
- the proportion of the acrylic copolymer in the pressure-sensitive adhesive is 50% by weight or more, 55% by weight or more, 60% by weight or more, 65% by weight or more, 70% by weight or more, 75% by weight or more, 80% by weight or more , 85 wt% or more, 90 wt% or more, 95 wt% or more, 97 wt% or more, or 99 wt% or more.
- the upper limit of the content of the acrylic copolymer in the pressure-sensitive adhesive There is no particular limitation on the upper limit of the content of the acrylic copolymer in the pressure-sensitive adhesive.
- the acrylic copolymer may be included in the pressure-sensitive adhesive in an amount of 100 wt% or less, 99 wt% or less, 98 wt% or less, 97 wt% or less, 96 wt% or less, or 95 wt% or less.
- the pressure-sensitive adhesive includes a component that is not included in the final pressure-sensitive adhesive layer, such as a solvent or solvent
- the content of the acrylic copolymer is the content in the pressure-sensitive adhesive excluding the component not included in the final pressure-sensitive adhesive layer.
- the storage modulus and peeling force of the pressure-sensitive adhesive referred to in the present specification are the storage modulus and peeling force in a state in which the pressure-sensitive adhesive composition is cross-linked (that is, the acrylic copolymer included in the pressure-sensitive adhesive composition is cross-linked), and thus It may be the storage modulus and peeling force of the pressure-sensitive adhesive or pressure-sensitive adhesive layer.
- the pressure-sensitive adhesive of the present application may exhibit a low storage modulus at a low temperature.
- the storage modulus is a result measured in the manner presented in the following Examples.
- the pressure-sensitive adhesive may have a storage modulus at -20°C of 100,000 Pa or less.
- the storage modulus of the pressure-sensitive adhesive at -20°C is in another example 98,000 Pa or less, 96,000 Pa or less, 95,000 Pa or less, 94,000 Pa or less, 93,000 Pa or less, 92,000 Pa or less, 90,000 Pa or less, 88,000 Pa or less, 86,000 Pa or less, 85,000 Pa or less, 84,000 Pa or less, 83,000 Pa or less, 82,000 Pa or less, 80,000 Pa or less, 78,000 Pa or less, 76,000 Pa or less, 74,000 Pa or less, 72,000 Pa or less, 70,000 Pa or less, 68,000 Pa or less, 66,000 Pa or less, 64,000 Pa or less or less, 62,000 Pa or less, 60,000 Pa or less, 58,000 Pa or less, 56,000 Pa or less, or 54,000 Pa or less.
- the lower limit of the storage modulus at -20°C is not particularly limited, for example, 30,000 Pa or more, 40,000 Pa or more, 42,000 Pa or more, 44,000 Pa or more, 45,000 Pa or more, 46,000 Pa or more, 48,000 Pa or more, 50,000 Pa or more.
- the pressure-sensitive adhesive can be applied to a flexible device to effectively cope with repeated deformation and recovery.
- the pressure-sensitive adhesive of the present application may exhibit a low storage modulus as described above at a low temperature and at the same time exhibit a high storage modulus of a certain level or higher at a relatively high temperature.
- the storage elastic modulus of the pressure-sensitive adhesive is a function that depends on the temperature, and as the temperature increases, the storage elastic modulus decreases. Therefore, the storage modulus at high temperature of the pressure-sensitive adhesive is usually lower than the storage modulus at low temperature.
- the storage modulus at high temperature is also relatively low when the pressure-sensitive adhesive has a low storage modulus at a low temperature
- the storage modulus at high temperature of the pressure-sensitive adhesive having a low storage modulus at a low temperature is higher than the storage modulus at a high temperature of the pressure-sensitive adhesive having a high storage modulus at a low temperature. lower than the storage modulus.
- a relatively high storage modulus at a high temperature may be exhibited together with a low storage modulus at a low temperature. That is, the pressure-sensitive adhesive of the present application may exhibit a relatively gentle slope in the graph of the storage modulus according to temperature.
- the pressure-sensitive adhesive of the present application may have a rate of change of elastic modulus according to Equation 1 below 2500 or less.
- Modulus change rate (M 20 - M 25 )/45
- Equation 1 M 20 is the storage modulus of the pressure-sensitive adhesive at -20°C (unit: Pa), and M 25 is the storage modulus of the pressure-sensitive adhesive at 25°C (unit: Pa).
- the elastic modulus change rate is 2400 or less, 2300 or less, 2200 or less, 2100 or less, 2000 or less, 1900 or less, 1800 or less, 1700 or less, 1600 or less, 1500 or less, 1400 or less, 1300 or less, 1200 or less, 1100 or less, 1000 or less, It may be about 900 or less or 800 or less.
- the lower limit of the rate of change of the elastic modulus is not particularly limited, and for example, the rate of change is 100 or more, 200 or more, 300 or more, 400 or more, 500 or more, 600 or more, 700 or more, 800 or more, 900 or more, 1000 or more, 1100 or more. , may be about 1200 or more, 1300 or more, or 1400 or more.
- the pressure-sensitive adhesive layer exhibiting the above elastic modulus change rate can effectively follow the repeated deformation and recovery in a foldable device, and maintain excellent workability and cutability.
- the pressure-sensitive adhesive having a low modulus of elasticity at a low temperature exhibits a relatively low modulus of elasticity even at a high temperature, it is not an easy task to satisfy the rate of change of the modulus of elasticity.
- the acrylic copolymer by applying a predetermined acrylic copolymer to be described later, it is possible to satisfy the above elastic modulus change rate.
- the storage modulus at 25° C. of the pressure-sensitive adhesive may be 10,000 Pa or more.
- the storage modulus at 25° C. is 12,000 Pa or more, 13,000 Pa or more, 14,000 Pa or more, 15,000 Pa or more, 16,000 Pa or more, 17,000 Pa or more, 18,000 Pa or more, 20,000 Pa or more, 21,000 Pa or more, 22,000 Pa or more in another example.
- the elastic modulus is, for example, about 100,000 Pa or less, 98,000 Pa or less, 96,000 Pa or less, 94,000 Pa or less, 92,000 Pa or less, 90,000 Pa or less, 88,000 Pa or less. or less, 86,000 Pa or less, 84,000 Pa or less, 82,000 Pa or less, 80,000 Pa or less, 78,000 Pa or less, 76,000 Pa or less, 74,000 Pa or less, 72,000 Pa or less, 70,000 Pa or less, 68,000 Pa or less, 66,000 Pa or less, 64,000 Pa or less, 62,000 Pa or less, 60,000 Pa or less, 58,000 Pa or less, 56,000 Pa or less, 54,000 Pa or less, 52,000 Pa or less, 50,000 Pa or less, 48,000 Pa or less, 46,000 Pa or less, 44,000 Pa or less, 42,000 Pa or less, 40,000 Pa or less, 38,000 Pa or less or less, 36,000 Pa or less, 35,000 Pa or less, 34,000 Pa or less, 32,000 Pa or less, 30,000 Pa or less, 28,000 Pa or less, 26,000 Pa or less, 26,000 Pa or less
- the pressure-sensitive adhesive of the present application may exhibit a relatively high high-temperature elastic modulus as described above and at the same time exhibit a high peel force.
- the pressure-sensitive adhesive, room temperature peel force to the glass may be about 500 gf / inch or more.
- the normal temperature peel force is a peel force measured at approximately 25°C, and a method for measuring this peel force is described in Examples.
- the peel force is 600 gf / inch or more, 700 gf / inch or more, 800 gf / inch or more, 900 gf / inch or more, 1000 gf / inch or more, 1100 gf / inch or more, 1200 gf / inch or more, 1300 in another example gf/inch or greater, 1400 gf/inch or greater, 1450 gf/inch or greater, 1500 gf/inch or greater, 1550 gf/inch or greater, 1600 gf/inch or greater, or 1700 gf/inch or greater.
- the room temperature peel force is 5000 gf / inch or less, 4500 gf / inch or less, 4000 gf / inch or less, 3500 gf / inch or less, 3000 gf / inch or less , 2800 gf/inch or less, 2600 gf/inch or less, 2500 gf/inch or less, 2400 gf/inch or less, 2200 gf/inch or less, 2000 gf/inch or less, 1800 gf/inch or less, 1600 gf/inch or less, or 1500 It may be on the order of gf/inch or less.
- the adhesive having such storage modulus and peeling force is applied to a flexible device to effectively respond to repeated deformation and recovery, and defects (eg, observation of deformation marks, etc.) do not occur before and after deformation. It has excellent performance, and does not cause lifting, peeling and/or foaming.
- a specific acrylic copolymer is applied to form a pressure-sensitive adhesive having specific physical properties as described above.
- the acrylic copolymer may include at least an alkyl (meth)acrylate unit, a unit represented by the following Chemical Formula 1, and a polar functional group-containing unit.
- the copolymer may further include a unit represented by the following formula (2) as an optional monomer unit if necessary.
- the unit means a monomer unit.
- R 1 represents hydrogen or an alkyl group
- R 2 represents an alkyl group having 11 to 13 carbon atoms.
- R 1 represents hydrogen or an alkyl group
- R 3 is an aromatic ketone group or a (meth)acryloyl group.
- the acrylic copolymer including the monomer units is effective in forming a desired pressure-sensitive adhesive.
- the acrylic copolymer is formed as a so-called crystalline copolymer under a predetermined ratio of the unit of Formula 1 and/or the polar functional group-containing unit, or has properties similar to those of the crystalline copolymer.
- crystalline copolymer refers to a copolymer whose melting point is confirmed in a predetermined range in the DSC (Differential Scanning Calorimeter) measurement method described in Examples of the present specification.
- Acrylic copolymers are known as amorphous copolymers.
- a copolymer when the units of the formula (1) are present in a predetermined ratio, and in some cases, when the units of the formula (1) interact with the polar functional groups present in a predetermined ratio, such a copolymer exhibits crystallinity, or at least crystalline It may exhibit gender-like properties.
- the pressure-sensitive adhesive when a copolymer having crystallinity or exhibiting properties similar to crystallinity is applied, the pressure-sensitive adhesive having the above-described properties can be efficiently formed. Therefore, it is possible to effectively form a pressure-sensitive adhesive layer exhibiting the above-described elastic modulus and peeling force characteristics through the pressure-sensitive adhesive to which the copolymer is applied.
- the alkyl (meth)acrylate unit contained in the copolymer for example, a unit derived from an alkyl (meth)acrylate having an alkyl group having 1 to 10 carbon atoms can be used.
- the alkyl group may be an alkyl group having 2 to 20 carbon atoms, 3 to 10 carbon atoms, 4 to 10 carbon atoms, 4 to 10 carbon atoms, 4 to 9 carbon atoms, or 4 to 8 carbon atoms.
- the alkyl group may be linear or branched, and may be substituted or unsubstituted.
- the unit may be formed using an alkyl (meth)acrylate having a straight or branched chain and an unsubstituted alkyl group.
- alkyl (meth)acrylate examples include methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, t-butyl (meth)acrylate, sec-butyl (meth)acrylate, pentyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, 2-ethylbutyl (meth)acrylate, isononyl (meth) Acrylate, n-octyl (meth) acrylate or isooctyl (meth) acrylate may be exemplified, but the present invention is not limited thereto.
- the acrylic copolymer may include the alkyl (meth)acrylate unit in a ratio within the range of about 10 to 80% by weight.
- the proportion of the alkyl (meth)acrylate unit is 15 wt% or more, 20 wt% or more, 25 wt% or more, 30 wt% or more, 35 wt% or more, 40 wt% or more, 45 wt% or more, 50 wt% or more in another example or more, or 55% or more, or 75% or less, 70% or less, 65% or less, 60% or less, 55% or less, 50% or less, 45% or less, 40% or less, or It may be about 35% by weight or less. Within this range, a desired pressure-sensitive adhesive can be effectively formed.
- the polar functional group-containing unit is a unit formed of a monomer having a polar functional group. These monomers usually contain a polymerizable group (eg, a carbon-carbon double bond) and a polar functional group at the same time.
- a polymerizable group eg, a carbon-carbon double bond
- Examples of the monomer having a polar functional group include a hydroxyl group-containing monomer, a carboxyl group-containing monomer, and a nitrogen-containing monomer, and in the present application, it is particularly advantageous to apply a hydroxyl group-containing monomer, but is not limited thereto.
- Examples of the hydroxyl group-containing monomer include 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, 6-hydroxyhexyl (meth)acrylate, 8-hydroxyoctyl (meth) acrylate, 2-hydroxy polyethylene glycol (meth) acrylate, or 2-hydroxy polypropylene glycol (meth) acrylate, and examples of the carboxyl group-containing monomer include (meth) ) acrylic acid, 2-(meth)acryloyloxy acetic acid, 3-(meth)acryloyloxy propyl acid, 4-(meth)acryloyloxy butyric acid, acrylic acid duplex, itaconic acid, maleic acid and maleic acid anhydrides and the like, and examples of the nitrogen-containing monomer include (meth)acrylamide, N-vinyl pyrrolidone, or N-vinyl caprolactam, but is not limited thereto.
- the polar functional group-containing unit may be included in the acrylic copolymer in a ratio of about 5 to 100 parts by weight relative to 100 parts by weight of the alkyl (meth)acrylate unit, and under this ratio, the durability, adhesiveness and peeling force of the pressure-sensitive adhesive layer may be stably maintained.
- the polar functional group-containing unit is 10 parts by weight or more, 15 parts by weight or more, 20 parts by weight or more, 25 parts by weight or more, 30 parts by weight or more, 35 parts by weight or more relative to 100 parts by weight of the alkyl (meth)acrylate unit.
- the unit of Formula 1 is a unit containing a long-chain alkyl group, and this unit is included in the copolymer in a certain ratio or more, and interacts with a polar functional group as necessary to impart crystallinity or properties similar to crystallinity to the copolymer. have.
- R 1 may be hydrogen or an alkyl group having 1 to 4 carbon atoms, specifically hydrogen, methyl or ethyl group.
- R 2 is an alkyl group having 11 to 13 carbon atoms, and the alkyl group may be linear or branched, and may be substituted or unsubstituted. In one example, R 2 may be a straight-chain, unsubstituted alkyl group.
- the unit of Formula 1 may be formed using lauryl (meth)acrylate and/or tetradecyl (meth)acrylate.
- the unit of Formula 1 may be included in the acrylic copolymer in an amount of about 50 to 300 parts by weight based on 100 parts by weight of the alkyl (meth)acrylate unit.
- the ratio of the unit of Formula 1 is about 55 parts by weight or more, 60 parts by weight or more, 65 parts by weight or more, 70 parts by weight or more, 75 parts by weight or more, 80 parts by weight or more relative to 100 parts by weight of the alkyl (meth)acrylate unit.
- the unit of Formula 2 that may be included as an optional monomer unit in the acrylic copolymer is a unit including an aromatic ketone group or a (meth)acryloyl group in a side chain.
- the aromatic ketone group or (meth)acryloyl group in the pressure-sensitive adhesive may exist as such, or may exist after undergoing a hydrogen removal reaction or radical reaction described below.
- the aromatic ketone group in the unit of formula (2) means an aromatic ketone group that induces hydrogen abstraction from a polymer chain when exposed to electromagnetic waves, or a substituent containing such an aromatic ketone group.
- aromatic ketone group When exposed to electromagnetic waves, the aromatic ketone group can remove hydrogen atoms from other polymer chains or from other parts of the polymer chain. This removal results in the formation of radicals, which can form crosslinks between polymer chains or within the same polymer chain.
- This category of aromatic ketone groups includes, for example, aromatic ketone groups such as derivatives of benzophenone, acetophenone, or anthroquinone.
- Examples of the monomer capable of deriving the unit of formula 2 having an aromatic ketone group include 4-benzoylphenyl (meth)acrylate, 4-(meth)acryloyloxyethoxybenzophenone, 4-(meth)acryloyloxy- 4'-methoxybenzophenone, 4-(meth)acryloyloxyethoxy-4'-methoxybenzophenone, 4-(meth)acryloyloxy-4'-bromobenzophenone and/or 4- acryloyloxyethoxy-4'-bromobenzophenone, and the like, but is not limited thereto.
- the (meth)acryloyl group in the unit of formula (2) means a (meth)acryloyl group or a substituent including the (meth)acryloyl group that induces free radical polymerization when exposed to electromagnetic waves in the presence of an appropriate radical initiator.
- the (meth)acryloyl group may act similarly to the aromatic ketone group by irradiation with electromagnetic waves.
- the unit of Formula 2 wherein R 3 is a (meth)acryloyl group may be formed by preparing a precursor copolymer and then further reacting with an unsaturated reagent compound to introduce a (meth)acryloyl group.
- the introduction of the (meth)acryloyl group is (1) a nucleophilic group on the precursor copolymer and an electrophilic group on the unsaturated reagent compound (that is, the unsaturated reagent compound has both an electrophilic group and a (meth)acryloyl group) involves a reaction between), or (2) an electrophilic group on the precursor copolymer and a nucleophilic group on the unsaturated reagent compound (i.e., the unsaturated reagent compound contains both nucleophilic groups and (meth)acryloyl groups) do.
- These reactions between nucleophilic groups and electrophilic groups are typically ring opening reactions, addition reactions or condensation reactions.
- the precursor copolymer has a hydroxy, carboxylic acid (-COOH), or anhydride (-O-(CO)-O-) group.
- the unsaturated reagent compound often has a carboxylic acid (-COOH), isocyanato (-NCO), epoxy (i.e. oxiranyl) or anhydride group in addition to a (meth)acryloyl group .
- the unsaturated reagent compound When the precursor copolymer has a carboxylic acid group, the unsaturated reagent compound often has a hydroxy, amino, epoxy, isocyanato, aziridinyl, azetidinyl or oxazolinyl group in addition to a (meth)acryloyl group.
- the precursor (meth)acrylate copolymer has anhydride groups, the unsaturated reagent compound often has hydroxy or amine groups in addition to (meth)acryloyl groups.
- the precursor copolymer may have a carboxylic acid group and the unsaturated reagent compound may have an epoxy group.
- exemplary unsaturated reagent compounds include, for example, glycidyl (meth)acrylate and 4-hydroxybutyl acrylate glycidyl ether.
- the precursor copolymer has an anhydride group, which is a hydroxy-substituted alkyl (meth)acrylate, such as 2-hydroxyethyl (meth)acrylate, 3-hydroxypropyl (meth)acrylate, and the like. It is reacted with an unsaturated reagent compound.
- the precursor copolymer has a hydroxy group and the unsaturated reagent compound has an isocyanato group and a (meth)acryloyl group.
- unsaturated reagent compounds include, but are not limited to, isocyanatoalkyl (meth)acrylates such as isocyanatoethyl (meth)acrylate.
- L comprises alkylene, arylene, or a combination thereof, optionally -O-, -O-(CO )-, -NH-(CO)-, -NH-, or a combination thereof.
- R 5 and R 6 are each independently an alkylene group, for example, alkylene having 1 to 10 carbon atoms, 1 to 6 carbon atoms, or 1 to 4 carbon atoms.
- R 1 is methyl or hydrogen.
- R 1 may be hydrogen or an alkyl group having 1 to 4 carbon atoms, specifically hydrogen, methyl or ethyl group.
- the unit of Formula 2 when included, may be included in the acrylic copolymer in a ratio of about 0.001 to 5 parts by weight relative to 100 parts by weight of the alkyl (meth)acrylate unit, and the desired pressure-sensitive adhesive layer by irradiation of electromagnetic waves under this ratio can be formed effectively.
- the ratio of the unit of Formula 2 is about 0.003 parts by weight or more, 0.005 parts by weight or more, 0.007 parts by weight or more, 0.009 parts by weight or more, 0.01 parts by weight or more, 0.015 parts by weight or more relative to 100 parts by weight of the alkyl (meth)acrylate unit.
- parts by weight or more 0.02 parts by weight or more, 0.025 parts by weight or more, 0.03 parts by weight or more, 0.035 parts by weight or more, 0.04 parts by weight or more, 0.045 parts by weight or more, 0.05 parts by weight or more, 0.055 parts by weight or more, 0.06 parts by weight or more, 0.065 parts by weight parts by weight or more, 0.07 parts by weight or more, 0.075 parts by weight or more, 0.08 parts by weight or more, 0.085 parts by weight or more, 0.09 parts by weight or more, 0.1 parts by weight or more, or 4.5 parts by weight or less, 4 parts by weight or less, 3.5 parts by weight or less, 3 parts by weight or less, 2.5 parts by weight or less, 2 parts by weight or less, 2 parts by weight or less, 1.5 parts by weight or less, 1 part by weight or less, 0.5 parts by weight or less, 0.3 parts by weight or less, 0.1 parts by weight or less, 0.08 parts by weight or less, 0.06 The amount may be about parts by weight or less,
- the acrylic copolymer may appropriately contain other monomer units in addition to the above-described monomer units, as long as the purpose is not impaired (for example, the crystallinity of the copolymer is not impaired).
- the acrylic copolymer included in the pressure-sensitive adhesive may be a crystalline acrylic copolymer.
- the term crystalline copolymer refers to a copolymer whose melting point is confirmed in a predetermined range in the DSC (Differential Scanning Calorimeter) measurement method described in Examples of the present specification.
- a crystalline acrylic copolymer having a melting point of about -20°C or less may be used as the acrylic copolymer.
- the melting point of the crystalline acrylic copolymer is, in another example, about -25°C or less, -30°C or less, -35°C or less, or -40°C or less, or -100°C or more, -95°C or more, -90°C or more, - 85 °C or higher, -80 °C or higher, -75 °C or higher, -70 °C or higher, -65 °C or higher, -60 °C or higher, -55 °C or higher, -50 °C or higher, or -45 °C or higher.
- fusing point can form a target adhesive effectively.
- the crystalline acrylic copolymer may be a copolymer including at least the above-described three types of units (alkyl (meth)acrylate units, units of Formula 1, and units containing a polar functional group).
- the acrylic copolymer does not exhibit crystallinity.
- the ratio of the unit of Formula 1 in the crystalline acrylic copolymer is, in another example, 65 parts by weight or more, 70 parts by weight or more, 75 parts by weight or more, 80 parts by weight or more, relative to 100 parts by weight of the alkyl (meth)acrylate unit, 85 parts by weight or more, 90 parts by weight or more, 95 parts by weight or more, or 100 parts by weight or more, or 2000 parts by weight or less, 1500 parts by weight or less, 1000 parts by weight or less, 900 parts by weight or less, 800 parts by weight or less, 700 parts by weight or less , 650 parts by weight or less, 600 parts by weight or less, 550 parts by weight or less, 500 parts by weight or less, 450 parts by weight or less, 400 parts by weight or less, 350 parts by weight or less, 300 parts by weight or less, 250 parts by weight or less, 200 parts by weight or less Or it may be about 150 parts by weight or less.
- the ratio (A/B) of the weight (A) of the unit of Formula 1 to the weight (B) of the polar functional group-containing unit may be 1.5 or more or more than 1.5.
- the ratio (A/B) is 1.7 or more, 1.9 or more, 2.1 or more, 2.3 or more, 2.5 or more, 2.7 or more, 2.9 or more, 3.1 or more, 3.3 or more, 3.5 or more, 3.7 or more, or 3.9 or more, or 10 or less. , 9 or less, 8 or less, 7 or less, 6 or less, 5 or less, 4 or less, 3 or less, 2.5 or less, or 2 or less.
- the polar functional group-containing unit may be a hydroxyl group-containing unit.
- a hydroxyalkyl (meth)acrylate having a hydroxyalkyl group having 3 or more or 4 or more carbon atoms may suitably form the crystalline acrylic copolymer.
- the alkyl (meth)acrylate unit may be included in a proportion within the range of about 20 to 70 wt%.
- the proportion of the alkyl (meth) acrylate unit is 25 wt% or more, 30 wt% or more, 35 wt% or more, 40 wt% or more, or 45 wt% or more, or 65 wt% or less, 60 wt% or less, It may be on the order of 55 wt% or less, 50 wt% or less, or 45 wt% or less. Within this range, a desired pressure-sensitive adhesive layer can be effectively formed.
- the acrylic copolymer a copolymer having a weight average molecular weight of 1 million or more may be used.
- the weight average molecular weight means a polystyrene conversion value measured by gel permeation chromatography (GPC).
- GPC gel permeation chromatography
- the unit of the weight average molecular weight is g/mol.
- the weight average molecular weight of the copolymer is, in one example, 1.1 million or more, 1.2 million or more, 1.3 million or more, 1.4 million or more, 1.5 million or more, 1.6 million or more, 1.7 million or more, 1.8 million or more, 1.9 million or more, or 2 million or more or more, or about 5 million or less, 4 million or less, 3 million or less, 2.5 million or less, or 2 million or less.
- the weight average molecular weight of the copolymer the greater the change in physical properties after crosslinking, but if the weight average molecular weight is too low, it is disadvantageous in terms of durability under high temperature and/or high humidity conditions.
- the desired pressure-sensitive adhesive layer can be effectively formed even in a state where the weight average molecular weight is maintained at an appropriate level.
- the pressure-sensitive adhesive layer may further include a crosslinking agent.
- the crosslinking agent may react with the acrylic copolymer to implement a crosslinked structure.
- the type of the crosslinking agent is not particularly limited, and for example, a general crosslinking agent such as an isocyanate-based compound, an epoxy-based compound, an aziridine-based compound, and a metal chelate-based compound may be used.
- This type of crosslinking agent is a so-called thermal crosslinking agent that implements a crosslinked structure by application of heat, and is different from a radical crosslinking agent described later.
- isocyanate-based compound examples include tolylene diisocyanate, xylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, isoborone diisocyanate, tetramethylxylene diisocyanate, naphthalene diisocyanate, and any one of the polyols ( ex.
- the epoxy compound include ethylene glycol diglycidyl ether, triglycidyl ether, trimethylolpropane triglycidyl ether, N,N,N',N'-tetraglycidyl ethylenediamine and glycerin diglycidyl. one or more selected from the group consisting of ethers;
- the aziridine-based compound include N,N'-toluene-2,4-bis(1-aziridinecarboxamide), N,N'-diphenylmethane-4,4'-bis(1-aziridinecarboxamide).
- the metal chelate compound include compounds in which a polyvalent metal such as aluminum, iron, zinc, tin, titanium, antimony, magnesium and/or vanadium is coordinated with acetyl acetone or ethyl acetoacetate, etc.
- the present invention is not limited thereto.
- the crosslinking agent may be included in an amount of 0.01 parts by weight to 10 parts by weight or 0.01 parts by weight to 5 parts by weight based on 100 parts by weight of the acrylic copolymer. In the above range, it may be adjusted in consideration of the cohesive force and durability of the pressure-sensitive adhesive layer.
- the ratio of the crosslinking agent is about 0.02 parts by weight or more, about 0.03 parts by weight or more, about 0.04 parts by weight or more, about 0.05 parts by weight or more, 0.06 parts by weight or more, 0.07 parts by weight or more, 0.08 parts by weight or more, or 0.09 or more, or about 9 parts by weight or less, 8 parts by weight or less, 7 parts by weight or less, 6 parts by weight or less, 5 parts by weight or less, 4 parts by weight or less, about 3 parts by weight or less, about 2 parts by weight or less, about 1 or less, about 0.8 parts by weight or less, about 0.6 parts by weight or less, about 0.4 parts by weight or less, about 0.2 parts by weight or less, about 0.15 parts by weight or less, about 0.1 parts by weight or less, 0.09 parts by weight or less, 0.08 parts by weight or less; or It may be about 0.07 parts by weight or less.
- the content of the crosslinking agent is selected to crosslink the acrylic copolymer at an appropriate level within the content range, a desired pressure-sensitive adhesive can be effectively formed.
- the pressure-sensitive adhesive layer may include, as the crosslinking agent, a crosslinking agent of a different type from the thermal crosslinking agent, a so-called radical crosslinking agent.
- a crosslinking agent implements a crosslinking structure by radical reaction.
- so-called polyfunctional acrylate may be exemplified, for example, 1,4-butanediol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, neopentylglycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, neopentyl glycol adipate (neopentylglycol adipate) di (meth) acrylate, hydroxypivalic acid (hydroxyl promisvalic acid) neopentyl glycol di (meth) acrylate, Dicyclopentanyl di(meth)acrylate, caprolactone-modified dicyclopentenyl di(meth)acrylate, ethylene oxide-modified di(meth)acrylate, di(meth)acryloxyethyl isocyanurate, Allylated cyclohexyl di(meth)acrylate, tricyclo
- the radical crosslinking agent in the pressure-sensitive adhesive layer may also be present in an appropriate ratio depending on the purpose, for example, it may be included in an amount of 0.01 parts by weight to 10 parts by weight or 0.01 parts by weight to 5 parts by weight based on 100 parts by weight of the acrylic copolymer. .
- the radical crosslinking agent does not correspond to an essential component.
- the pressure-sensitive adhesive may include appropriate additional components as needed, for example, a radical initiator, a UV absorber, a light stabilizer, a plasticizer, and/or a crosslinking catalyst.
- a method of forming the pressure-sensitive adhesive in the present application is not particularly limited.
- the pressure-sensitive adhesive composition in which each component (copolymer and crosslinking agent, etc.) to form the pressure-sensitive adhesive is applied in consideration of the type of the acrylic copolymer and/or cross-linking agent applied to the composition to form the pressure-sensitive adhesive by applying an appropriate crosslinking method.
- the acrylic copolymer and/or crosslinking agent is a type crosslinked by application of heat
- a crosslinked product may be formed by applying appropriate heat. It can form water, and other crosslinking modes can also be applied.
- Such a pressure-sensitive adhesive may exhibit the above-described elastic modulus and/or peel force characteristics.
- the thickness of the pressure-sensitive adhesive of the present application is not particularly limited, and may have a thickness of a conventional pressure-sensitive adhesive in consideration of the applied use.
- the pressure-sensitive adhesive may have an appropriate level of thickness within the range of approximately 5 ⁇ m to 100 ⁇ m.
- the present application also relates to an adhesive film or an optical laminate including a base film and an adhesive layer formed on one or both surfaces of the base film.
- the base film may be an optical film.
- the pressure-sensitive adhesive layer may include the above-described pressure-sensitive adhesive.
- the pressure-sensitive adhesive layer of the present application may be formed on one or both surfaces of the base film to form an adhesive film, or may be formed on one or both surfaces of the base film, which is an optical film, to form an optical laminate.
- the type of the base film that can be applied is not particularly limited.
- a base film that can be applied to the formation of a conventional pressure-sensitive adhesive film may be applied.
- PET poly(ethylene terephthalate)
- PTFE poly(tetrafluoroethylene)
- PP polypropylene
- PE polyethylene
- polyimide film polyamide film
- COP cyclic olefin polymer film, polybutene film, polybutadiene film, vinyl chloride copolymer film, polyurethane film, ethylene-vinyl acetate film, ethylene-propylene copolymer film, ethylene-ethyl acrylate copolymer film, ethylene-methyl acrylate copolymer
- a coal film and/or a polyimide film may be used, but is not limited thereto.
- the thickness of the base film is not particularly limited, and may have an appropriate thickness within a range suitable for the purpose.
- the optical film When the optical film is applied as the base film, there is no particular limitation on the type of the optical film.
- the optical film may be a polarizing film, a polarizing plate, or a retardation film. Even in this case, the optical film may have a thickness in an appropriate range depending on the purpose.
- the pressure-sensitive adhesive film or the optical laminate may further include a release film or a protective film for protecting the pressure-sensitive adhesive layer until use, if necessary.
- the present application also relates to a flexible device including the pressure-sensitive adhesive layer, the pressure-sensitive adhesive film, or the optical laminate including the pressure-sensitive adhesive.
- a flexible device including the pressure-sensitive adhesive layer, the pressure-sensitive adhesive film, or the optical laminate including the pressure-sensitive adhesive.
- the pressure-sensitive adhesive layer may be used for the purpose of so-called OCA (Optically Clear Adhesive) or OCR (Optically Clear Resin) in the device, and thus the pressure-sensitive adhesive layer, the pressure-sensitive adhesive film, or the application form of the optical laminate is conventional It may be the same as the application form of OCA or OCR.
- OCA Optically Clear Adhesive
- OCR Optically Clear Resin
- the flexible device may include a display panel and the pressure-sensitive adhesive layer, an adhesive film, or an optical laminate present on one or both surfaces of the display panel.
- the display panel may be configured to be folded or rolled through one or more folding or rolling shafts.
- the present application is applied to a flexible device to effectively respond to repeated deformation and recovery, no defects (eg, observation of deformation marks, etc.) before and after deformation, excellent cutability and workability, and lifting and peeling And/or it is possible to provide a pressure-sensitive adhesive that does not cause bubble generation or the like.
- the present application may also provide a pressure-sensitive adhesive layer including the pressure-sensitive adhesive, an adhesive film or an optical film including the same, and a flexible device such as a foldable device or a rollable device.
- 1 is a view showing the structure of a specimen applied in a dynamic folding test.
- FIG. 2 is a diagram illustrating a process in which a dynamic folding test is performed.
- the storage modulus was evaluated using ARES G2 (Advanced Rheometric Expansion System G2) (TA).
- a specimen was prepared by cutting the pressure-sensitive adhesive layer having a thickness of about 0.8 mm into a circle having a diameter of about 8 mm.
- the pressure-sensitive adhesive layer was prepared by overlapping the pressure-sensitive adhesive layer having a thickness of about 25 ⁇ m to a thickness of about 0.8 mm.
- the storage modulus at the measurement temperature was evaluated for the specimen using a parallel plate fixture having a diameter of about 8 mm. In the evaluation, the evaluation conditions were a frequency of 1 Hz and a strain of 5%.
- a specimen was prepared by cutting the pressure-sensitive adhesive film to be measured (the structure of the release film/adhesive layer/base film) into a rectangle having a width of about 25 mm and a length of about 100 mm. Then, the release film was peeled off, the pressure-sensitive adhesive layer was attached to soda lime glass according to JIS Z 0237 using a roller of 2 kg, and left at room temperature for 1 day. Thereafter, the peel force was measured while peeling the pressure-sensitive adhesive layer at a peeling angle of 180 degrees and a peeling rate of 0.3 m/min at room temperature using TA (Texture Analyzer) equipment (Stable Micro System).
- TA Textture Analyzer
- the melting point of the copolymer was measured according to a measurement method using a conventional DSC (Differential Scanning Calorimeter) equipment. As the equipment, DSC-STAR3 equipment (Mettler Toledo) was used. About 10 mg of the sample (copolymer) is sealed in a dedicated pen, and the temperature increase condition is 10 ° C / min and the cooling condition is -10 ° C / min. The glass transition temperature was measured. The measurement temperature range was -120°C to 200°C. Conditions were, first, from room temperature (about 30° C.) to -120° C., cooled at a rate of about -10° C./min, and then heated again to 200° C. at a temperature increase rate of 10° C./min (primary heating). After that, it was cooled to -120°C at a rate of about -10°C/min again, and heated again to 200°C at a temperature increase rate of 10°C/min (second heating).
- the melting point and the glass transition temperature were evaluated during the second heating.
- the weight average molecular weight (Mw) of the copolymer was measured using a Gel Permeation Chromatograph (GPC), and the measurement conditions are as follows. When measuring the weight average molecular weight, standard polystyrene (Aglient System (manufactured)) was used to prepare the calibration curve, and the measurement results were converted.
- GPC Gel Permeation Chromatograph
- Aglient GPC Aglient 1200 series, U.S.
- the dynamic folding test was performed by preparing a specimen as shown in FIG. 1 .
- a specimen was prepared by cutting the laminate prepared by sequentially stacking the samples in a rectangular shape having a horizontal length of about 7.8 cm and a vertical length of about 17 cm. Then, as shown in FIG. 2, folding and folding was repeated 200,000 times at 25° C. by sandwiching the specimen between parallel plates with an interval of 5 mm. Defects such as cracks in the coating layer were visually observed. A case in which even one of the above defects occurred was evaluated as NG, and a case in which all of the above defects did not occur was evaluated as PASS.
- the copolymer (polymer) (A) exhibited a melting point within a range of approximately -44°C.
- a copolymer (polymer) was prepared in the same manner as in Preparation Example 1, except that the weight ratio of the applied monomer and the weight average molecular weight of the polymer (copolymer) were as shown in Table 1 below.
- a pressure-sensitive adhesive composition was prepared by mixing about 0.07 parts by weight of an isocyanate crosslinking agent (xylylene diisocyanate) and 0.005 parts by weight of a catalyst based on 100 parts by weight of the copolymer (polymer) (A) of Preparation Example 1.
- a catalyst for accelerating the urethane reaction of a hydroxyl group and an isocyanate group was typically used.
- the prepared pressure-sensitive adhesive composition was applied on a base film (poly(ethylene terephthalate) (PET)) film with a comma coater, and maintained at 140° C. for about 3 minutes to form a pressure-sensitive adhesive layer having a thickness of about 25 ⁇ m. .
- a pressure-sensitive adhesive composition and pressure-sensitive adhesive layer were prepared in the same manner as in Example 1, except that the type of the applied copolymer and the ratio of the crosslinking agent and the catalyst were changed as shown in Table 2 below. In this case, the same kind as in Example 1 was used as the crosslinking agent and catalyst. In Table 2 below, the ratio of the crosslinking agent to the catalyst is 100 parts by weight of the copolymer.
- the unit of storage modulus is Pa
- the unit of peel force is gf/inch.
- the elastic modulus change rate is a physical quantity confirmed by Equation 1 above.
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Abstract
Description
공중합체 | 2-EHA | LA | HBA | Mw(만) | Tm | |
제조예1 | A | 40 | 40 | 20 | 198 | -44 |
제조예2 | B | 35 | 50 | 15 | 203 | -42~-48 |
제조예3 | C | 40 | 50 | 10 | 196 | -42~-48 |
제조예4 | D | 45 | 40 | 15 | 195 | -42~-48 |
제조예5 | E | 50 | 35 | 15 | 196 | -38~-34 |
제조예6 | F | 50 | 40 | 10 | 201 | -38~-34 |
제조예7 | G | 55 | 35 | 10 | 204 | -38~-34 |
제조예8 | H | 80 | - | 20 | 195 | - |
제조예9 | I | 90 | - | 10 | 208 | - |
제조예10 | J | 10 | 70 | 20 | 197 | - |
제조예11 | K | 48 | 50 | 2 | 195 | - |
2-EHA: 2-에틸헥실 아크릴레이트 LA: 라우릴 아크릴레이트 HBA: 4-히드록시부틸 아크릴레이트 Mw: 중량평균분자량(단위: g/mol) Tm: 융점(단위: ℃) |
공중합체 종류 | 가교제 비율 | 촉매 비율 | ||
실시예 | 1 | 제조예 1 | 0.07 | 0.005 |
2 | 제조예 2 | 0.07 | 0.005 | |
3 | 제조예 3 | 0.07 | 0.005 | |
4 | 제조예 4 | 0.07 | 0.005 | |
5 | 제조예 4 | 0.09 | 0.005 | |
6 | 제조예 5 | 0.07 | 0.005 | |
7 | 제조예 5 | 0.09 | 0.005 | |
8 | 제조예 6 | 0.07 | 0.005 | |
9 | 제조예 6 | 0.09 | 0.005 | |
10 | 제조예 7 | 0.07 | 0.005 | |
11 | 제조예 7 | 0.09 | 0.005 | |
비교예 | 1 | 제조예 8 | 0.07 | 0.005 |
2 | 제조예 9 | 0.07 | 0.005 | |
3 | 제조예 10 | 0.07 | 0.005 | |
4 | 제조예 11 | 0.07 | 0.005 |
저장 탄성률 (-20℃, Pa) |
저장 탄성률 (25℃, Pa) |
탄성률 변화율 (수식 1) |
박리력 (25℃, gf/inch) |
다이내믹 폴딩 |
|
실시예1 | 89614 | 23937 | 1459.5 | 1689 | PASS |
실시예2 | 58478 | 17517 | 910.2 | 1385 | PASS |
실시예3 | 52907 | 17055 | 796.7 | 1376 | PASS |
실시예4 | 85787 | 22923 | 1397 | 1786 | PASS |
실시예5 | 80253 | 22876 | 1275 | 1577 | PASS |
실시예6 | 92579 | 39662 | 1175.9 | 1794 | PASS |
실시예7 | 96776 | 41418 | 1230.2 | 1562 | PASS |
실시예8 | 68500 | 22110 | 1030.9 | 1672 | PASS |
실시예9 | 68453 | 22090 | 1030.3 | 1530 | PASS |
실시예10 | 79196 | 37500 | 926.6 | 1594 | PASS |
실시예11 | 81271 | 40327 | 909.9 | 1420 | PASS |
비교예1 | 224751 | 45046 | 3993.4 | 1879 | NG |
비교예2 | 360226 | 98987 | 5805.3 | 1418 | NG |
비교예3 | 194526 | 43153 | 3363.8 | 1526 | NG |
비교예4 | 42809 | 16976 | 574.1 | 309 | NG |
Claims (15)
- 가교된 아크릴 공중합체를 포함하고,-20℃에서의 저장 탄성률이 100,000 Pa 이하이며,유리에 대한 상온 박리력이 500 gf/inch 이상인 점착제.
- 가교된 아크릴 공중합체를 포함하고,하기 수식 1에 따른 탄성률의 변화율이 2500 이하인 점착제:[수식 1]탄성률 변화율 = (M20 - M25)/45수식 1에서 M20은, -20℃에서의 상기 점착제의 저장 탄성률이고, M25는 25℃에서의 상기 점착제의 저장 탄성률이다.
- 가교된 아크릴 공중합체를 포함하고,상기 아크릴 공중합체는 결정성 아크릴 공중합체인 점착제.
- 제 1 항 내지 제 3 항 중 어느 한 항에 있어서, 25℃에서의 저장 탄성률이 10,000 Pa 이상인 점착제.
- 제 1 항 또는 제 2 항에 있어서, 아크릴 공중합체는 결정성 아크릴 공중합체인 점착제
- 제 3 항 또는 제 5 항에 있어서, 아크릴 공중합체는 융점이 -20℃ 이하인 점착제.
- 제 7 항에 있어서, 알킬 (메타)아크릴레이트 단위는, 예를 들면, 탄소수 1 내지 10의 직쇄 또는 분지쇄의 알킬기를 가지는 점착제.
- 제 7 항 또는 제 8 항에 있어서, 극성 관능기 함유 단위는 히드록시기 함유 단량체 유래 단위인 점착제.
- 제 7 항 내지 제 9 항 중 어느 한 항에 있어서, 아크릴 공중합체는, 알킬 (메타)아크릴레이트 단위를 25 내지 65 중량%의 비율로 포함하는 점착제.
- 제 7 항 내지 제 10 항 중 어느 한 항에 있어서, 아크릴 공중합체는, 알킬 (메타)아크릴레이트 단위 100 중량부 대비 50 내지 300 중량부의 화학식 1의 단위를 포함하는 점착제.
- 제 7 항 내지 제 11 항 중 어느 한 항에 있어서, 아크릴 공중합체는, 알킬 (메타)아크릴레이트 단위 100 중량부 대비 10 내지 100 중량부의 극성 관능기 함유 단위를 포함하는 점착제.
- 제 7 항 내지 제 12 항 중 어느 한 항에 있어서, 화학식 1의 단위가 알킬 (메타)아크릴레이트 단위 100 중량부 대비 60 중량부 이상 아크릴 공중합체에 포함되어 있고, 상기 화학식 1의 단위의 중량(A)의 극성 관능기 함유 단위의 중량(B)에 대한 비율이 1.5 이상인 점착제.
- 기재 필름; 및 상기 기재 필름의 일면 또는 양면에 형성된 제 1 항 내지 제 13 항 중 어느 한 항의 점착제를 포함하는 점착제층을 가지는 점착 필름.
- 하나 이상의 폴딩축 또는 롤링축을 통해 폴딩 또는 롤링될 수 있도록 구성된 디스플레이 패널; 및상기 디스플레이 패널의 일면 또는 양면에 존재하고, 제 1 항 내지 제 13 항 중 어느 한 항의 점착제를 포함하는 점착제층을 포함하는 플렉서블 디바이스.
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004002684A (ja) * | 2002-04-18 | 2004-01-08 | Nitta Ind Corp | 結晶性を有するブロック共重合体および粘着剤 |
KR20130051901A (ko) * | 2011-11-10 | 2013-05-21 | 닛토덴코 가부시키가이샤 | 점착 시트 |
KR20160019079A (ko) * | 2016-01-29 | 2016-02-18 | (주)엘지하우시스 | 유연도가 높은 점착 조성물 |
KR20160076977A (ko) * | 2014-12-23 | 2016-07-01 | 삼성에스디아이 주식회사 | 점착필름 및 이를 포함하는 디스플레이 부재 |
KR20160084569A (ko) * | 2015-01-05 | 2016-07-14 | 도레이첨단소재 주식회사 | 바이오칩 양면점착용 점착수지 조성물 및 이를 이용한 바이오칩용 양면점착 테이프 |
KR102027569B1 (ko) * | 2016-11-10 | 2019-10-01 | 삼성에스디아이 주식회사 | 점착필름, 이를 위한 점착제 조성물, 이를 포함하는 터치 패널 및 이를 포함하는 디스플레이 표시장치 |
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- 2022-02-25 WO PCT/KR2022/002781 patent/WO2022182193A1/ko active Application Filing
- 2022-02-25 KR KR1020220025235A patent/KR20220122550A/ko unknown
- 2022-02-25 CN CN202280007481.1A patent/CN116457433A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004002684A (ja) * | 2002-04-18 | 2004-01-08 | Nitta Ind Corp | 結晶性を有するブロック共重合体および粘着剤 |
KR20130051901A (ko) * | 2011-11-10 | 2013-05-21 | 닛토덴코 가부시키가이샤 | 점착 시트 |
KR20160076977A (ko) * | 2014-12-23 | 2016-07-01 | 삼성에스디아이 주식회사 | 점착필름 및 이를 포함하는 디스플레이 부재 |
KR20160084569A (ko) * | 2015-01-05 | 2016-07-14 | 도레이첨단소재 주식회사 | 바이오칩 양면점착용 점착수지 조성물 및 이를 이용한 바이오칩용 양면점착 테이프 |
KR20160019079A (ko) * | 2016-01-29 | 2016-02-18 | (주)엘지하우시스 | 유연도가 높은 점착 조성물 |
KR102027569B1 (ko) * | 2016-11-10 | 2019-10-01 | 삼성에스디아이 주식회사 | 점착필름, 이를 위한 점착제 조성물, 이를 포함하는 터치 패널 및 이를 포함하는 디스플레이 표시장치 |
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