TW201139594A - Pressure-sensitive adhesive composition for optical members and pressure-sensitive adhesive tape for optical members - Google Patents

Abstract

Provided is a pressure-sensitive adhesive composition for optical members which is protected from whitening under high -temperature and high-humidity conditions and which can ensure high reliability. Also provided is a pressure-sensitive adhesive tape for optical members, which is produced using the pressure-sensitive adhesive composition. The pressure -sensitive adhesive composition for optical members comprises an acrylic copolymer obtained by polymerizing a mixed monomer which contains 1 to 25wt% of 2-hydroxyethyl acrylate, 1 to 25wt% of N-vinylpyrrolidone, 0.5 to 30wt% of a monomer having a structure represented by general formula (1-1), or 0.1 to 30wt% of a monomer having a structure represented by general formula (1-2). In general formula (1-1), R1 is hydrogen or methyl; R2 is hydrogen or alkyl having less than 3 carbon atoms; and n is an integer of 8 to 45. In general formula (1-2), R3 is hydrogen or methyl; R4 is alkyl having 3 to 30 carbon atoms; and m is an integer of 8 to 45.

Description

[Technical Field] The present invention relates to an adhesive composition for an optical member which can suppress whitening generated under high temperature and high humidity and realize high reliability. Further, the present invention relates to an adhesive tape for an optical member produced by using the adhesive composition for an optical member. [Prior Art] The display panel is used in various fields, particularly in a mobile phone, a personal digital assistant, etc., not only for the image display device but also for the input device. In such an image display device or an input device, the display panel is bonded to a protective sheet, a touch panel, a filter, or the like by a highly transparent adhesive or an adhesive tape such as an acrylic adhesive. . However, in the past, when the acrylic adhesive was returned to room temperature after being exposed to high temperature and high humidity, whitening was caused by dew condensation of moisture absorption, which caused a problem of deterioration in visual properties. The decrease in the visual property caused by whitening as described above can be a fatal defect to the image display device or the input device. For this problem, for example, the patent document 揭示 discloses that it will be composed of acrylate and methacrylate. An aba-type triblock copolymer ′ and an acrylic-based transparent adhesive composition having a polymer blended with a resin having a base group. Patent Document 1 discloses that the acrylic-based transparent adhesive composition described in the document It can be exposed for a long time in a high-temperature and high-humidity environment, a warm water-immersed environment, a boiled environment, etc., and it is not whitened to maintain transparency. However, the acrylic transparent adhesive composition 201139594 described in Patent Document 1 is essential for the adhesive or the adhesive tape because it is blended with the sacred base of the sacred base. Sticky ☆ eight m, U f oysters are not knife. & ‘The desire is not to reduce the adhesive or the tape, and to suppress the ancient or adhesive tape. The present invention provides an optical member capable of suppressing whitening generated under high temperature and high humidity and achieving high reliability (4). The composition of the agent. Further, an object of the present invention is to provide an adhesive tape for an optical member which is produced by using the optical structure adhesive composition. The present invention relates to an adhesive composition for an optical member, which comprises an acrylic copolymer, which comprises 2 to 25% by weight of acrylic acid 2-hydroxyethyl vinegar, N-vinylpyrrolidine a ketone of 5% to 25% by weight, a monomer having a structure represented by the following formula 〇-n, 5 to 3 〇 weight = %, or a monomer having the structure represented by the following formula ((4) 〇 1 to 3 〇% by weight of the mixed monomer is obtained by polymerization. R1 \(C2H40)n ——R2 (1~1) Ο In the formula (1-1), R1 represents a hydrogen atom or a ruthenium group or the carbon number is less than 3 Alkyl, η represents 8 to R2 represents an integer of hydrogen atom 45. 5 201139594

(1~2) In the general formula (1-2), R3 志-" 3~30 Table: 虱 atom or methyl group, R4 represents the number of breaks m is not an integer of 8 to 45. The invention is described in detail below. The inventors of the present invention have issued a rule that the exposure of a high hydrophilic monomer to a monomer constituting an acrylic copolymer due to the optical adhesive composition containing an acrylic copolymer is exposed to high temperatures. When the temperature is restored to room temperature after the wetness, the water is slightly dispersed, and as a result, whitening can be suppressed. The present inventors have found that most of the highly hydrophilic monomers increase the glass transition temperature (Tg) of the buprophytic copolymer to more than necessary, and are not suitable for the adhesive composition, and by the predetermined ratio It is possible to suppress whitening which is produced under high temperature and high humidity by using acrylic acid 2_, ethyl N-vinyl pyrrolidine _, or a specific monomer having a polyethylene oxide chain, and high reliability can be achieved. The optical member is composed of an adhesive composition, thereby completing the present invention. The adhesive composition for an optical member of the present invention contains an acrylic copolymer. The above acrylic copolymer is prepared by containing 2-hydroxyethyl acrylate 〜 25 weight. /. N-vinylpyrrolidine 嗣 1~25 by weight. /. a monomer having a structure represented by the following formula (1-1): 5 to 30% by weight, or a structure represented by a mixed monograph (1 - 2) having a lower concentration of 201139594 and 30% by weight. Monomer steroids are obtained by polymerization. Sub R1 0 (c2h4〇)

(1-1) In the formula (1-1), R1 represents a hydrogen atom or a sulfonate, or an alkyl group having a carbon number of not up to 3, and η represents an integer of 8 to 45, which represents a rat R3 0 (C2H40) m. R4 (1-2) In the formula (1-2), R represents a halogen atom or a methyl group, an alkyl group of r4 3 to 30, and m represents an integer of 8 to 45. The monomer having a structure represented by the formula (丨-l) and the monomer having the structure represented by the above-mentioned aeration have a hydrophilic group and are hydrophilic in terms of 2-hydroxyethyl acrylate, N-vinylpyrrole, and a monomer having a structure represented by the above formula (丨-1).

^ L-J The above-mentioned mixed monomer contains the monomer in the above-mentioned range. When the adhesive composition for an optical member is exposed to a high temperature and high humidity, the water is finely dispersed, and as a result, whitening can be suppressed. In the case of 2-hydroxyethyl acrylate, N-vinylpyrrole π ketal, a monomer having a structure represented by the formula (1-1), and having the above-mentioned general formula, the above-mentioned general formula (1-2) Here, the monomer having the structure represented by the above (1-2Ί201139594 is also referred to as "a monomer having a hydrophilic group" by the recovery of the present invention. In addition, the above monomer having a hydrophilic group does not cause The glass transition temperature (Tg) of the above acrylic polymer is increased to more than necessary, and does not adversely affect the reliability of the adhesive composition of the optical member of the invention. In addition, usually, it contains a metal such as 1το or When the metal thin film of the metal oxide is formed into a (tetra) body, the whitening of the acrylic adhesive becomes remarkable, but the monomer having the hydrophilic group is contained in the above range by the above mixed monomer, and the present invention The adhesive composition for an optical member can suppress whitening caused by high temperature and high humidity even when a metal film containing a metal such as IT0 or a metal oxide is formed into an adherend. In addition to the water-based monomer, examples of the highly hydrophilic monomer which has an effect of suppressing and which does not adversely affect the smearability include, for example, an acryl-based η (4_h coffee-kiss-button coffee, 4_HBA), and a ruthenium group. Propyl acrylate vinegar (3 can. Qing. State a - valence, 3 yue), acrylic acid 6_ hexyl hexyl ester (6 hydr〇 xyhexyi heart, 6-HHA), etc. The above mixed monomer may contain the same Hydrophilic monomer. Among the above-mentioned monomers having a hydrophilic group, the clock shakes the 平 平 平 平 平 平 # # # # # # li li li li li li li li li li li li li li li li li li li li li li li li li The optical member is composed of an adhesive composition, and further, the metal film containing the scorpion, soil-genus or metal oxide is made into an adherend, which can be more effectively suppressed (4) under high temperature and high humidity. In the case of whitening, it is preferable that the monomer having the structure represented by the formula (1·〇) or the above-mentioned monomer having the structure represented by the formula (1-2).

When the adhesive composition for an optical member of the present invention contains the following 201139594 v a secreting agent, if the monomer having a hydrophilic group is a type or amount of 2-hydroxyethyl acrylate, the vinyl group ratio is a ketone. 'According to the cross-linking agent>, the gelation of the adhesive composition of the optical member is rushed to cause a decrease in the operability. Therefore, it is necessary to sufficiently control the kind and amount of the crosslinking agent. The cypress is still a monomer having the structure represented by the above formula (1) by the above-mentioned monomer having a hydrophilic group, or the above structure having the structure of the formula (1-2) The monomer's can suppress the gelation of the optical component adhesive composition by the type or amount of the crosslinking agent, and it is easy to control the type and amount of the crosslinking agent. In the monomer having the structure represented by the formula (Μ) and the monomer having the structure represented by the formula (1 2 ), the lower limit of the number of repetitions of the ethylene oxide is 8, and the upper limit is 45. When the number of repetitions of the above ethylene oxide is less than 8, the obtained adhesive composition for an optical member cannot sufficiently suppress whitening which occurs under high temperature and high humidity. When the number of repetitions of the above ethylene oxide exceeds 45, the obtained adhesive for an optical member & an article cannot sufficiently suppress whitening which occurs under high temperature and high humidity. In addition, when the number of repetitions of the ethylene oxide is exceeded, the monomer having the structure represented by the formula (1-1) or the monomer having the structure represented by the formula 0-2) The compatibility of the monomer or the like of the main component is lowered, and the adhesive force of the obtained adhesive composition for an optical member is lowered. The lower limit of the number of repetitions of the above ethylene oxide is 13, and the upper limit is preferably 40, in order to more effectively suppress the whitening which occurs under high temperature and humidity. In addition, the number of repetitions of the above-mentioned epoxy bromide is particularly preferable, and the number of repetitions of the epoxy: alkane is represented by η in the above formula (1-1), and is represented by ΓΠ in the above formula (1_2 201139594). In the monomer of the structure of the formula 1, & main _ fly (Μ) = the end group of the base is a gas atom or a carbon number of the base. It: oxygen is paid: conditions for higher temperature and high humidity Further, it is also possible to suppress the aspect of the ancient &> wind property of the adhesive composition for whitening optical components, δ, preferably an alkyl group having a carbon number of less than 3. Further, the terminal group of the above polyethylene oxide chain In the above formula (indicated by R2), in the monomer having a structure represented by the formula (1-2), the terminal group of the polyethylene oxide chain is an alkyl group having 3 to 30 carbon atoms. The aspect of the composition for the optical member for suppressing whitening under conditions of higher temperature and high humidity is obtained. The terminal group of the polyepoxy chain is preferably a hospital having a carbon number of 18. The terminal group of the above polyethylene oxide chain is represented by R4 in the above formula (1. 2). The monomer having the structure represented by the formula (1-1) In the above-mentioned monomer having a structure represented by the formula (1-2), as a commercially available product, for example, Blenimer ρμΕ-1000 (repeating number of ethylene oxide = 23, known as methyl 'day oil) Made by the company), Blemmer PME-400 (repeating number of epoxy bake = 9, terminal sulfhydryl, manufactured by Nippon Oil Co., Ltd.), Blemmer PME-2000 (repeating number of ethylene oxide = 45, terminal sulfhydryl, daily oil Manufactured by the company), NK Ester AM-130G (repeating number of ethylene oxide = 13, end sulfhydryl, manufactured by Shin-Nakamura Chemical Industry Co., Ltd.), Light Ester 041MA (repeating number of ethylene oxide = 30, terminal sulfhydryl group, Blemmer PSE-1300 (Ethylene oxide repeat number = 30, terminal octadecyl 'Nippon Oil Co., Ltd.), Blemmer AE-400 (Ethylene oxide compound repeat number 10 201139594 Based on the 'Nippon Oil Company', Blem window mine test (ring milk B: repeat number = 30 'end 壬 base base, manufactured by Oyster Company), etc. 31: ° single monomer in the monomer with hydrophilic groups The ratio of the body: the obtained adhesive composition for the optical member cannot be sufficiently inhibited from moisture: If the above-mentioned mixed monomer has the above-mentioned affinity: 'the ratio of the early body of the soil is too large, the adhesive for the optical member obtained from the shell is used, and the initial wettability of the adhesive layer composed of the material is lowered, The makeup of the adherend is degraded and the reliability is poor. The preferred lower limit of the ratio of the 2-hydroxyethyl acrylate or the N-vinylpyrrolidine ketone in the above mixed monomer is 5% by weight, and further preferably the lower limit. Preferably, the upper limit is 8% by weight, and further preferably the upper limit is 15 and the weight is 2:%. A preferred lower limit of the ratio of the monomer having the structure represented by the formula (1-1) or the monomer having the structure represented by the formula (1-2) in the above mixed monomer is: The weight %, more preferably the lower limit is 2% by weight, preferably the upper limit is 2% by weight, and more preferably the upper limit is 15% by weight. The mixed monomer preferably contains 1 to 60% by weight of a monomer having a bicyclic ring structure and an olefinic double bond. (1) The monomer having the bicyclic ring structure and the one olefinic double bond is contained in the above mixed monomer, and the adhesive strength of the adhesive composition for an optical member to the adherend is rapidly increased. The adhesion as described above is particularly effective in the case where the adherend is a polycarbonate plate or an acrylic plate. "Inflammatory It is known that 'polycarbonate sheets and acrylic sheets are easy to absorb moisture, and ancient V, Awen, under the conditions of 201139594, vaporizes and produces evolved gases. Therefore, when the adherend is a polycarbonate plate or an acrylic plate, the bubble grows due to the gas pressure of the escaping gas under high temperature conditions, and the interface between the polycarbonate plate or the acrylic plate and the adhesive layer is likely to occur. Float and peel off. When the mixed monomer contains the monomer having a bicyclic ring structure and a dilute hydrocarbon double bond, the adhesive component of the obtained optical member adhesive composition is rapidly increased in adhesion to the adherend, even if the adherend is In the case of a polycarbonate plate or an acrylic plate, it can also be suppressed from floating and peeling due to the interface between the adherend and the adhesive layer. Further, 'polycarbonate sheets and acrylic sheets are used for, for example, a touch panel of an input device such as a mobile phone's number of assistants. The bis% structure is not particularly limited, and examples of the functional group having the above bicyclic ring structure include bicyclo[M0]butyl, dicyclopentyl, bicyclo[2.1.〇]pentyl, and bicyclo[31〇]. Hexyl, bicyclo[211]hexyl, bicyclo[2.2.0]hexyl'bicyclo[2.2.nheptyl, bicyclo[311]heptyl,bicyclo[3_2.0]heptyl,bicyclo[4.1.0]heptyl,bicyclo [2 2 2]octyl, bicyclo[321]octyl, bicyclo[3.3.0]octyl, bicyclo[411]octyl, bicyclo[42〇]octyl, bicyclo[5.ι·〇]octyl, Bicyclo[3 2 2]fluorenyl, bicyclo[3 3]]indolyl, bicyclo[4.2.1]nonylbicyclo[4.3.〇]fluorenyl, bicyclo[5indolyl, bicyclo[5 2 fluorene]fluorenyl Bicyclo [6.1.0] fluorenyl 'bicyclo[431] fluorenyl, and having a structure in which a part of the hydrogen atom is taken as a chain alkyl group or a cyclic alkyl group & The base of the #人's above can be 'at' can also be multiple. Among them, the functional group having the above bicyclic ring structure is preferably a norbornyl group or an isodecyl group, and particularly preferably an isodecyl group. 12 201139594 The above olefinic double bells & double bonds are not particularly limited, and as a functional group having a double bond, for example, it can be smear, #k归四性★ 歹] 曱 (曱基) acryl thiol, vinyl , base, etc. Among them, the functional group having a stilbene double bond is a propylene group. Sustained as a monomer of a dilute hydrocarbon double bond, and a (meth) acrylonitrile group (a as a bicyclic ring structure having the above and specifically, for example, preferably having an isoindole group) Iso-decyl ester. If the above-mentioned mixed monomer has a bicyclic ring structure and ι _ I·, the ratio of the monomer of the bond is less than 0.1% by weight, and the obtained optical component adhesive composition is present. The adhesive strength of the adherend is lowered, and the reliability is lowered. If the ratio of the above-mentioned monomer having a bicyclic ring structure and a summer olefinic double bond exceeds 60% by weight in the mixed monomer, the obtained acrylic copolymer is present. In the case where the glass transition temperature is increased, the adhesive layer composed of the acrylic acid copolymer as described above and the composition for the optical member (4) has a decrease in adhesion to the adherend, and the reliability is lowered. A lower limit of the ratio of the above-mentioned monomer having a bicyclic ring-like fluorene-like olefinic double bond is 15% by weight, and further preferably a lower limit is 25% by weight, and a higher limit is 55. % by weight, and further The upper limit is preferably 40% by weight. The mixed monomer preferably contains 30% by weight to 8% by weight of the (fluorenyl) acrylate monomer having a structure represented by the following formula (2). The (mercapto) acrylate monomer having the structure represented by the above formula (2) is also simply referred to as "(meth)acrylic acid oxime monomer." 13 201139594

(2) In the formula (2), R5 represents a gas atom or a methyl group, and R6 represents a carbon group having 3 to 14 carbon atoms. The hydrogen atom of the alkyl group of R6 may be substituted with a cycloalkyl group. When the carbon number of the base of the above R6 is 2 or less or 15 or more, the glass transition temperature of the obtained acrylic acid copolymer may be improved. The adhesive layer composed of the adhesive composition for an optical member containing the acrylic copolymer as described above has a decrease in adhesion to the adherend, and the reliability is lowered. The carbon number of the alkyl group of the above R6 is preferably from 4 to 12. Further, the nitrogen atom of the above-mentioned R group may be substituted with a ring-based group. The above cycloalkyl group is not particularly limited, and examples thereof include a cyclopropane & a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, and a cyclooctyl group. The (meth) acrylate monomer is not particularly limited, and examples thereof include (meth) butyl acrylate, (meth) acrylate 2 - ethyl hexahydrate, and (meth) acrylate vinegar ( Methyl)propyl acrylate '(meth)acrylic acid 2-ethyl vinegar, decyl (meth) acrylate, isopropyl (meth) acrylate, methacrylate (meth) acrylate, (meth) acrylate An oxime ester, a lauryl (meth) acrylate, an isotetradecyl (meth) acrylate, or the like. When the above-mentioned mixed monomer contains the monomer as described above, the cohesive force, initial adhesiveness, and the like of the adhesive layer composed of the obtained optical member adhesive composition are improved. Wherein, in the case of obtaining an adhesive layer having a low low temperature modulus and an initial wettability, the above (meth)acrylic acid 201139594 vinegar precursor preferably contains a solvent selected from (ethyl) acrylate a toluene octanoic acid vinegar and a (meth)acrylic acid butyl vinegar group (to the earth) (meth) acrylate monomer β ^ species if the above mixed monomer in the above (meth) acrylic When the proportion of the monomer is 30% by weight, the adhesive layer composed of the obtained adhesive composition for optical members has a low low-temperature elastic modulus, and the initial thirst is lowered, and the adhesion to the adherend is high. In the case where the reliability of the above-mentioned mixed monomer is more than the rib weight %, the adhesive layer composed of the obtained adhesive composition for an optical member exists. The cohesive force is lowered and the workability is lowered. A more preferred lower limit of the ratio of the above (methyl &) acetoacetate monomer in the above mixed monomer is 40% by weight, and a more preferred upper limit is 65% by weight. The above mixed monomer may have a carboxyl group and an olefinic double bond. When the above mixed monomer contains the above monomer having a carboxyl group and an olefinic double bond, the intermolecular interaction of the obtained acrylic copolymer is increased. The cohesive force of the adhesive layer composed of the adhesive composition for an optical member containing the acrylic copolymer as described above is improved. Further, the mixed monomer may not contain the above monomer having a carboxyl group and an olefinic double bond. The monomer having a carboxyl group and one olefinic double bond is not particularly limited, and examples thereof include (meth)acrylic acid, (meth) acryloylacetic acid, and (meth)acrylic acid oxime. Propionic acid, (mercapto) acrylonitrile butyric acid, (mercapto) acryl valeric acid, crotonic acid, etc. Unsaturated single buffer 15 201139594 Acid H diacid 'anti-succinic acid, methyl cis-butyl An unsaturated dicarboxylic acid such as a metaconic acid, a mesaconic acid or a sulfa nic acid. The proportion of the above-mentioned mixed monomer having a carboxyl group and one olefinic double bond is not particularly limited, but is preferably 2% by weight or less. If the ratio of the monomer having a rebel base and a dilute hydrocarbon double bond exceeds 2 f by %, the obtained photonic member adhesive composition is made of a metal film containing a metal such as iota and a metal oxide. In the case of being adhered, it becomes easy to deteriorate the metal thin film. Above /3⁄4. The proportion of the above-mentioned precursor having a slow base and the last dilute double bond in the monomer is more preferably i% by weight or less and further preferably 5% by weight or less. The method for producing the above-mentioned acrylic copolymer is not particularly limited, and examples thereof include a monomer having the above hydrophilic group and, if necessary, a single ring having a bicyclic ring structure and an olefinic double bond. The mixed monomer of another monomer or the like is allowed to be present in the presence of a polymerization initiator. The above polymerization method is not particularly limited, and examples thereof include a conventionally known polymerization method such as solution polymerization, emulsion polymerization, suspension polymerization, and bulk polymerization. The solvent to be used for the solution polymerization is not particularly limited, and examples thereof include ethyl acetate, toluene, bismuth sulphite, ethyl b, fresh, acetone, diethyl ether and the like. The amount of the solvent to be used for the solution polymerization is not particularly limited, and the preferred lower limit of the mixed monomer is 25 parts by weight, and the upper limit is preferably 3 GG parts by weight. If the amount of the above solvent is less than the weight of 16 201139594, the molecular weight of the acrylic copolymer is Μ (4). The adhesive layer composed of the adhesive composition for an optical member containing the above-described acrylic acid copolymer has a tendency to reduce the adhesion to the adherend and the aggregation. When the compounding amount of the above solvent exceeds (10)" parts", when the obtained acrylic acid copolymer is used to prepare an adhesive composition for an optical member, it is necessary to remove the solvent when forming the adhesive layer. It is not particularly limited, and examples thereof include a persulfate, an organic peroxide, an azo compound, etc., wherein 'in the case where a metal film containing a metal such as ruthenium or a metal oxide is made into an adherend, The above-mentioned persulfate is not particularly limited, and examples thereof include potassium persulfate, sodium persulfate, and persulfate. The organic peroxide is not particularly limited. For example, it can be: U-double (third hexyl peroxide) _3,3,5-trimethylcyclohexane, over-emulsified pivalic acid third vinegar, peroxidic pivalic acid third vinegar, over-emulsified Laurel, 2,5-dimethyl-2,5-bis(2-ethylhexylperoxy peroxide) calcined, peroxyethylhexanoic acid, third vinegar, peroxyl ethylhexanoate Tributyl vinegar, third isobutyl peroxybutyrate, peroxidation _3,5,5_ tri The second self-purine of hexanoic acid, the third butyl vinegar of oxidized lauric acid, etc. The above azo compound is not particularly limited, and examples thereof include: 2, 2, azobisisobutyronitrile, and a azobis (a) Methylvaleronitrile), 4,4,_dioxed bis(4·cyanovaleric acid), 2,2, dioxin bis(2·methylbutyronitrile), azobiscyclohexanecarbonitrile, etc. The polymerization initiator may be used singly or in combination of two or more kinds. The amount of the polymerization initiator to be added is not particularly limited, and the preferred lower limit of 100 parts by weight of the above-mentioned 17 201139594 mixed monomer is 0 02 parts by weight. The upper limit is 0.5 weight of scar: 3⁄4 of the above polymerization initiator is less than the weight part, and the polymerization reaction becomes insufficient, or the polymerization reaction requires a long time. If the polymerization initiator is prepared, the amount of the polymerization initiator is adjusted. When the amount exceeds 5 parts by weight, the weight average molecular weight of the obtained acrylic copolymer may become too low or the molecular weight distribution may become excessively wide. The adhesive composition of the optical member containing the acrylic copolymer as described above may be used. Adhesion and cohesion of the adhesive layer to the adherend The lower limit of the weight average molecular weight of the above acrylic copolymer is 10,000, and the upper limit is preferably 1.5 million. If the weight average molecular weight of the above acrylic copolymer is less than 2 G, the obtained optical The adhesive layer composed of the adhesive composition of the member has a high temperature elastic modulus and a decrease in reliability

condition. If the weight average molecular weight of the above acrylic copolymer exceeds 15 million Y, the fluidity of the acrylic copolymer may be lowered. The adhesive layer composed of the adhesive composition for an optical member containing the acrylic copolymer as described above has a decrease in adhesion to the adherend, and the reliability is lowered. ^ The lower limit of the weight average molecular weight of the above acrylic copolymer is 30,000 and the preferred lower limit is 40,000, and the lower limit is preferably 500,000, and the upper limit is preferably 1.2 million, and the upper limit is preferably 90,000. A better upper limit is 650,000. In addition, the weight average molecular weight in this specification is a value measured by the gel permeatisn chr〇mat〇graphy (Gpc) method, and is calculated by polystyrene conversion. Specifically, for example, a diluent obtained by diluting & 100 times the propylene 18 201139594 acid copolymer with tetrahydrofuran furan (THF) can be filtered with a filter, and the obtained sputum can be used as a tube. A column (for example, a product name "2_s-Model" manufactured by Waters Co., Ltd.) is measured by a GPC method, and a weight average molecular weight is obtained by conversion of polystyrene. The solution containing the above-described propionic acid copolymer becomes a low viscosity solution. Therefore, when a dot composition layer is formed using an adhesive composition for an optical member containing the acrylic acid copolymer, the amount of the solvent necessary for coating is small, and it is excellent. In addition, it is easy to make a thicker adhesive [to improve the adhesion of the adhesive layer to the adherend. The viscosity of the optical liquid containing the above-mentioned acrylic copolymer is not particularly limited, and B is used; the structure: wide (four) composition is dissolved in the solution ^ using a Β-type viscometer ("B8U-type viscosity heart company") under the condition of temperature The viscosity of the lower limit is 5 〇〇 mPa.s, and the upper limit is preferably curry... The optical component using the adhesive composition may contain a crosslinking agent in addition to the acid copolymer. The cross-linking structure is contained in the above-mentioned cross-linking agent. Further, by the formation of the spring, the S copolymer can be adjusted to form the gel type of the layer by the type or amount of the obtained optical structure. Further, the adhesive agent composed of the composition is not particularly limited to the above-mentioned crosslinking agent, and the aziridine is, for example, a heteropolyester-based crosslinking agent. Among them, in the case of the metal chelate "Do not use the father's face, the heat resistance and durability are free of isocyanic acid, and the component adhesive composition preferably contains a crosslinking agent selected from the group consisting of Among the groups of the epoxy-based crosslinking agent, there is one less than one type of crosslinking agent. The isocyanic acid-based crosslinking agent is not particularly limited, and is preferably an aliphatic isocyanate-based crosslinking agent. In the case of the aliphatic isocyanate-based cross-linking agent, for example, coronate Hx (manufactured by Sakamoto Polyamide Co., Ltd.) or the like is exemplified as the commercial product. The epoxy-based crosslinking agent is not particularly limited, and is preferably an aliphatic ring. Oxygen-based crosslinking agent. Examples of the above-mentioned aliphatic epoxy-based crosslinking agent include Denacol EX212, Denac® 1 Εχ2Μ (all manufactured by ChemteX Co., Ltd.), and the like. It is not particularly limited, and a preferred lower limit of the amount of 100 t of the acrylic copolymer is 〇1 ^ parts, and a preferred upper limit is 10 parts by weight. If the amount of the above crosslinking agent is less than 1 part by weight, Crosslinking of the above acrylic copolymer becomes insufficient, and the resulting light In the adhesive layer formed of the adhesive composition for a member, the cohesive force is lowered and the workability is lowered. When the amount of the crosslinking agent is more than 10 parts by weight, the obtained adhesive composition for an optical member is composed of the obtained adhesive composition. The adhesion of the adhesive layer to the adherend and the decrease in the initial adhesion decrease the reliability. The lower limit of the amount of the crosslinking agent to be added to the acrylic copolymer is 0.3 parts by weight. The adhesive composition for an optical member of the present invention may further contain an adhesive-imparting resin. The adhesive-imparting resin is not particularly limited, and examples thereof include a xylene resin, a phenol resin, and a rosin-based resin. (4) Resin or the like. These adhesion-imparting resins may be used singly or in combination of two or more. Among them, an alkylphenol reactant which is preferably a toluene tree is more preferably a di-F benzene resin. 20 201139594 In addition, the above The adhesive imparting resin is preferably a hydrogenated resin, and by using the hydrogenated resin as described above, the transparency of the obtained optical member (four) agent composition is improved. The adhesive composition for an optical member of the present invention may further contain a decane agent. 疋σ The adherend of the adhesive layer composed of the obtained adhesive composition for an optical member is obtained by containing the above decane coupling agent. The above-mentioned decane coupling agent is not particularly limited, and examples thereof include vinyl trimethoxy decane, vinyl triethoxy oxalate, methyl propyl decyl oxydiyl trimethoxy decane, and r· Methyl propylene methoxypropyl decyl dimethoxy decane, r · glycidoxypropyl trimethoxy sylvestre, glycidoxypropyl methyl dimethoxy sulphur Xi Xi, Bu ring Oxypropoxypropylmethyldiethoxy oxacyclohexane, 2-(3,4·epoxycyclohexyl)ethyltrimethoxy sylvestre, plant Aminopropyl propylene trimethoxy hydroxy, r-Aminopropyl Triethoxy oxime, r-aminopropyltrimethylmethoxy sylvestre, called 2-aminoethyl) 3-aminopropyltriethoxy sulphur, N-(2-amino Ethyl) 3-aminopropylmethyldimethoxyoxyl-decylpropyldimethoxymethane, propylidene triethoxyl, butyl trimethoxyl, 7, Cyclopropylmethyl: f group money and the like. The adhesive composition for an optical member of the present invention may further contain a previously known additive as needed within the range which does not impair the effects of the present invention. The above additives are not particularly limited, and examples thereof include a filler and an anti-aging agent. The method of producing the adhesive composition for an optical member of the present invention is not particularly limited. For example, the above-mentioned acrylic copolymer and, if necessary, 21 201139594

The crosslinking agent, the adhesion-imparting resin, the above-mentioned stone stalk coupling agent, and the above-mentioned additive are mixed and stirred. J. The invention relates to an adhesive composition for an optical member (9): a structure: applied to various optical members. Preferably, the present invention is used for an image display device for a mobile phone, a personal digital assistant, etc., for use in protecting an image display device=protecting plate and a display panel. For the purpose of manufacturing an input device such as a mobile phone or a tablet, the polycarbonate panel or the acrylic plate of the touch panel is attached to the display panel. Since the adhesive composition for a high optical member can be suppressed from being whitened at a high temperature, for example, it can be suitably applied to a display panel or the like, and it is required to have high transparency, ', °, (+), and ^ Reliability. An adhesive member for an optical member member having an adhesive layer composed of the present invention can be used as an adhesive tape for the above-mentioned use member, and the obtained light is additionally provided. The optical member formed by the optical member of the invention is a well-formed member. The adhesive component of the J-layer is not limited to the gel fraction of the component layer of the present invention. The optical use of the adhesive tape is appropriately adjusted to the 'better' and the upper limit is preferably 95% by weight. If the upper, ‘·,’ 30 weight does not reach 3. At % by weight, there is a case where the optical component = the gel fraction of the agent layer. If the filming rate of the upper adhesive layer of the above-mentioned &-study is lower than the 95 ^ agent layer, there is an initial wettability drop.彳 彳 Adhesive reliability decline. The adhesion to the debonded body is lowered, 22 201139594 The lower limit of the gel fraction of the adhesive layer is 40% by weight, and the upper limit is 90% by weight. Further, the above gel fraction can be measured by the following method. The optical member of the present invention was cut into a rectangular shape of 50 mm x 25 mm by an adhesive tape to prepare a test piece. The adhesive layer of the obtained test piece was scraped off with a spoon to prepare a block of the adhesive, and the block of the adhesive was immersed in the Guangyi S day for 24 hours at 23 tons, and then passed through a stainless steel mesh screen of the mesh. The piece of the adhesive was taken out and dried under the condition of 11 ° C for 1 hour. Then, the weight of the block of the adhesive after drying was measured, and the gel fraction was calculated using the following formula (1). Gel fraction (% by weight) = 100x (W2) / (Wi) (1) Tongue: (n, w, indicates the dryness of the block of the adhesive before the impregnation) 1 indicates the impregnation after drying The weight of the adhesive block depends on the thickness of the adhesive layer to be swelled in the solvent before the use of the spoon to the adhesive layer of the test piece. The thickness of the adhesive layer is not particularly limited. Below the best, the upper limit is i. If the thickness of the above adhesive layer is not satisfactory, the adhesive layer may have a weak adhesion to the adherend, and if the thickness of the adhesive layer exceeds 丨 = composition The operability is degraded, etc. The above lower limit is 1" " and the lower limit is preferably: the upper limit is 5 〇..., and the upper limit is preferably 300 Å. The #| belt may be of a non-type, or may be formed on both sides of the substrate, and the support type of the hurricane-adhesive layer is supported. 23 201139594 The above-mentioned substrate is only required to have transparency. The material is not particularly limited, and examples thereof include acrylic acid, olefin, and polycarbon. Ester, ethylene, ABS (acrylonitrile butadiene styrene), polyethylene terephthalate (PET), nylon, amine ester, polyethylenimine, etc. A sheet composed of a resin. A sheet having a mesh structure; a sheet having a perforated sheet, etc. The thickness of the substrate is not particularly limited, and a preferred lower limit is 2 claws, and an upper limit is preferably 200 μm. If the thickness of the substrate is less than 2 to the claw, the obtained adhesive member for the optical member may be broken due to insufficient strength, or the operation may become difficult. If the thickness of the substrate exceeds _, the viscosity of the substrate exists. Too strong, the followability of the step of the adhesive tape for the obtained optical member is deteriorated. The lower limit of the thickness of the substrate is 5 "m', and the upper limit is 丨〇〇# m. The method of producing an adhesive tape for an optical member is not particularly limited. As a method of producing an adhesive tape for an unsupported optical member, for example, the following method can be used: # Applying the adhesive composition for an optical member of the present invention to a release sheet Paper or release film Forming the adhesive layer to form an adhesive layer, and superimposing the newly prepared release paper or release film so that the release-treated surface and the adhesive layer are in contact with each other to obtain a laminate, and then using a rubber roller pair Further, as a method of producing the pressure-sensitive adhesive tape for an optical member of the present invention, it is preferable to use a method comprising: the above-mentioned monomer having a hydrophilic group, and optionally containing the above-mentioned jt n , A mixed monomer of another monomer such as a monomer having a olefinic double bond and a monomer such as an olefinic double bond is subjected to radical polymerization by a bulk polymerization to produce the above-mentioned acrylic copolymer, and at the same time - It is carried out until it is brought to the belt. The above block polymerization is preferably photopolymerization in terms of easily removing the heat of polymerization and easily controlling the reaction. In particular, as a method of producing the pressure-sensitive adhesive tape for an optical member of the present invention, a method of coating a monomer composition containing the above mixed monomer, a photopolymerization initiator, an optional additive, and the like without a solvent is suitably used. After forming a monomer layer on the release-treated surface of the release-treated transparent synthetic resin film, the release layer of another transparent synthetic resin film which has been subjected to release treatment is superposed on the monomer layer, and is synthesized. The resin layer is subjected to light irradiation such as ultraviolet irradiation to the monomer layer, whereby the mixed monomer is subjected to radical polymerization. In the case where the adhesive tape for an optical member of the present invention is produced by photopolymerization, in the case where a crosslinked structure is formed simultaneously with polymerization, the mixed monomer preferably contains two or more polymerizable functional groups. Polyfunctional (meth)acrylic acid vinegar. The polyfunctional (fluorenyl) acrylate is not particularly limited, and examples thereof include .1,6-hexanediol di(decyl)acrylate, anthracene, 4-butanediol di(meth)acrylate, and polypropylene glycol. Di(indenyl) acrylate, hydrogenated polybutadiene di(indenyl) acrylate, trishydroxypropyl propane triacrylate, neopentyl alcohol tris(decyl) acrylate, neopentyl alcohol tetrakis Acrylate, polyurethane bis(indenyl) propylene I 8 oxime, polyester bis(indenyl) acrylate, and the like. Among them, 1,6-hexanediol diacrylate, polypropylene glycol diacrylate, hydrogenated polybutadiene diacrylate is preferable in terms of a small decrease in stress dispersibility of the obtained adhesive layer and excellent adhesion property. Ester, polyurethane diacrylate, polyester diacrylate. In the case where the above mixed monomer contains the above-mentioned polyfunctional (fluorenyl) acrylate, the amount of the above polyfunctional (meth) acrylate is not particularly limited, and the preferred lower limit of the above mixed monomer is 0 02% by weight, preferably upper limit is 5 weight / 〇. When the amount of the polyfunctional (meth) acrylate is less than 5% by weight, the crosslinking of the acrylic copolymer is insufficient, and the obtained adhesive layer may have a decreased cohesive force and a decrease in workability. If the above polyfunctional (meth)acrylic acid is blended in an amount exceeding 5 parts by weight. /〇 ‘The adhesive layer obtained in the adhesive body has a decrease in the adhesion and initial adhesion to the adherend, and the reliability is lowered. A more preferred lower limit of the above polyfunctional (meth) acrylate in the above mixed monomer is 0_05 weight ❶ /. A preferred upper limit is 3% by weight. The photopolymerization initiator is not particularly limited, and examples thereof include a ketone such as 4-(2-hydroxyethoxy)phenyl (2-hydroxy-2-propyl) ketone (manufactured by Merck Co., Ltd., trade name "Darocure 2959"). Photopolymerization initiator; α • Hydroxy _α, α'-dimercapto-acetophenone (Merck's 'trade name 'a 1173')) 曱 acetophenone, 2,2-dimethyl Ethoxy-2-phenylphenyl ketone (manufactured by Ciba-Geigy Co., Ltd., trade name "Irgacure 651"), 2-hydroxy-2-cyclohexylacetophenone (manufactured by Ciba_Geigy Co., Ltd., trade name "haCure 184"), etc. A copper-based photopolymerization initiator; a benzyl group-reduced condensed-based photopolymerization initiator; _ ketone, fluorenylphosphine oxide, decylphosphonate, and the like. The amount of the photopolymerization initiator to be added is not particularly limited, and a preferred lower limit of 100 parts by weight of the above mixed monomer is 〇〇1 part by weight, and a preferred upper limit is 5 parts by weight. When the amount is less than 1 part by weight, the polymerization of the above mixed monomer is incomplete, and the resulting adhesive layer has a decrease in cohesive force, and the required physical properties are not obtained. 26 201139594 When the amount of the above photopolymerization initiator is more than 5 parts by weight, the amount of radical generated during light irradiation increases, the number average molecular weight of the obtained acrylic copolymer decreases, or the gel fraction of the adhesive layer decreases. This existence cannot be filled with the inhibition of whitening produced under high temperature and high humidity. A more preferred lower limit of the amount of the above photopolymerization initiator to be added to 100 parts by weight of the above mixed monomer is 0.03 part by weight, and a more preferred upper limit is i part by weight. The transparent synthetic resin film is not particularly limited, and examples thereof include a polyethylene terephthalate film and the like. The lamp used for the light irradiation is not particularly limited, and examples thereof include a lamp having a light-emitting distribution at a wavelength of 400 nm or less. Examples of the lamp having a light-emitting distribution at a wavelength of 400 nm or less include a low-pressure mercury lamp, a medium-pressure mercury lamp, a high-pressure mercury lamp, an ultra-high pressure mercury lamp, a chemical lamp, a black light lamp, a microwave-excited mercury lamp, and a metal hydride. The light in the active wavelength region of the photopolymerization initiator can be efficiently emitted, and the light absorption of the components other than the photopolymerization initiator contained in the monomer layer is small, and the light sufficiently reaches the inside of the monomer layer. Further, the above mixed monomer is efficiently polymerized, so that a chemical lamp is preferred. The light irradiation intensity in the above-described light irradiation is not particularly limited. However, since the light irradiation intensity affects the polymerization degree of the obtained acrylic copolymer, the polymerization degree of the target acrylic copolymer or the performance of the adhesive layer or the like is caused. Appropriate adjustments. For example, when an acetophenone-based photopolymerization initiator is used as the photopolymerization initiator, the photo-intensity of the acetophenone-based photopolymerization initiator is preferably 27: 〇丨~WO mW/cm2. Further, the wavelength region in which photolysis of the acetophenone-based photopolymerization initiator is effective depends on the photopolymerization initiator, and is usually about 365 nm to 42 〇 nm. The use of the adhesive tape for an optical member of the present invention is not particularly limited, and can be applied to various optical members. In the case of the adhesive member for an optical member of the present invention, it is preferable to use the adhesive member of the present invention for the purpose of manufacturing an image display device such as a mobile phone or a personal digital assistant. A protective plate for protecting the surface of the circular image display device is attached to the display panel, or used for manufacturing a polycarbonate panel or an acrylic plate of the touch panel when manufacturing an input device such as a mobile phone or a personal digital assistant The display panel fits. According to the present invention, it is possible to provide an adhesive composition for an optical member which can suppress whitening generated under high temperature and high humidity and achieve high reliability. Further, according to the present invention, an adhesive tape for an optical member produced by using the adhesive composition for an optical member can be provided. [Embodiment] The present invention will be described in more detail below with reference to examples, but the invention is not limited to the embodiments. (Example 1-1) (1) Production of an acrylic copolymer In a reactor equipped with a thermometer, a stirrer, and a cooling tube, 44.5 parts by weight of 2-ethylhexyl acrylate, 30 parts by weight of isodecyl acrylate, and 0.5 of acrylic acid were added. Parts by weight, 25 parts by weight of 2-hydroxyethyl acrylate, and 10 parts by weight of ethyl acetate per 100 parts by weight of the monomers were placed in a nitrogen atmosphere at 28, 2011,39,594, and then the reactor was heated to start reflux. After 30 minutes, G. 2 parts by weight of the third hexyl peroxypivalate as a polymerization initiator was diluted with 5 parts by weight of ethyl acetate with respect to 100 parts by weight of the monomer, and the polymerization initiation was carried out. The solution was added dropwise to the above reactor over 2 hours. Thereafter, at 270 C, the addition of the polymerization initiator was started for 8 hours to obtain an acrylic copolymer solution having a solid content of 50%. For the obtained acrylic copolymer, a thermal decomposition apparatus ("Double_Sh〇t Pyr〇lyzer" manufactured by Fr〇ntier Lab, and a GC ms (gw chromatograph mass spectrometry) apparatus (manufactured by Sakamoto Electronics Co., Ltd.) was used. , Q_l〇OOGC), FT_IR (F〇urier transf() i_m infrared spectrometer, Fourier transform infrared spectrometer) (Therm〇

The ratio (% by weight) of the constituent units derived from the respective monomers constituting the acrylic copolymer was measured by Fisher Scientific Co., Ltd., NICOLET 6700) and NMR (nuclear magnetic resonance NMR) (manufactured by JEOL Ltd., JNM-ECA400). The ratio (% by weight) of the obtained constituent units is not in Table 1. Further, as for the obtained acrylic copolymer, a "2690 Separations Model" manufactured by Waters Co., Ltd. was used as a column, and a weight average molecular weight in terms of polystyrene was measured by a GPC method. The weight average molecular weight obtained is shown in Table 1. (2) An adhesive tape for an optical member is prepared by adding 0.5 parts by weight of Coronate HX (manufactured by Nippon Polyurethane Co., Ltd.) as a crosslinking agent to 100 parts by weight of the obtained acrylic copolymer, and mixing it to prepare an adhesive for optical members. Composition. 29 201139594 The obtained light is lifted; the I# π m film is coated with the adhesive composition on the release + 炙 release treatment surface of the release polyethylene terephthalate film to form an adhesive layer having a thickness of 100. On the obtained adhesive layer, the newly prepared release polyethylene terephthalate film was superposed on the release-treated surface in contact with the adhesive layer to obtain a laminate. The obtained laminate was pressed with a rubber roller to obtain a double-sided adhesive tape for an optical member to which a release-prepared poly(p-phenylene terephthalate) ethylene film was attached. (Examples N2 to 1-5, Comparative Example 1 _丨~丨·3) Acrylic acid copolymer having a ratio (% by weight) of the constituent oxime shown in Table 1 was obtained by changing the monomer composition of the acrylic copolymer. In the same manner as in Example 1-1, a double-sided adhesive tape for an optical member to which a film of a release-type polystyrene film was attached was obtained in the same manner as in Example 1-1. (Example 2-1) (1) Production of an acrylic copolymer In a reactor equipped with a thermometer and a stirrer 'cooling tube, 59.5 parts by weight of 2-ethylhexyl acrylate and an isodecyl acrylate weight were added. 0.5 parts by weight of acrylic acid, 25 parts by weight of fluorene-vinylpyrrolidone, and 100 parts by weight of 100 parts by weight of the monomers, and subjected to gas-gas foaming replacement, and then reacted under a nitrogen stream. The device is 70. (:. Then, 0.2 parts by weight of the peroxidic pivalic acid third hexane vinegar as a polymerization initiator was diluted with 5 parts by weight of ethyl acetate to 100 parts by weight of the monomer, and the obtained polymerization initiation was carried out. The solution was added dropwise to the above reactor for 2 hours. The temperature was controlled by heating and cooling in order to keep the reaction temperature at 70 ° C. The reaction was started at 7 (from the start of the addition of the polymerization initiator) at TC. After the time of 8 small 30 201139594, the reaction was completed by cooling, thereby obtaining a 50% solid acrylic copolymer solution. For the obtained acrylic copolymer, a thermal decomposition apparatus (Frontier) was used.

Manufactured by Lab, Double-Shot Pyrolyzer), GC-MS device (manufactured by Sakamoto Electronics Co., Ltd., Q-1000GC) FT-IR (manufactured by Thermo Fisher Scientific, NICOLET6700) and NMR (manufactured by JEOL-JAM-ECA400) The ratio (% by weight) of the constituent units derived from the respective monomers constituting the acrylic copolymer was measured. The ratio (% by weight) of the constituent units obtained is shown in Table 2. Further, the "2690 Separations Model" manufactured by Waters Co., Ltd. was used as a column for the obtained acrylic copolymer, and the weight average molecular weight in terms of t-styrene was measured by the Gpc method. The weight average molecular weight obtained is shown in Table 2. (2) An adhesive tape for an optical member is produced by adding 100 parts by weight of the obtained acrylic copolymer, and adding a weight fraction of Denacol EX212 (manufactured by Nagase ChemteX Co., Ltd.) as a crosslinking agent, and stirring it to prepare an adhesive for an optical member. Things. _ The optical component of the optical component of the bismuth diacetate film is formed into a release layer of '100 layers of adhesive layer' on the obtained adhesive layer, on the layer of the agent, to release the mold The newly prepared release polyethylene terephthalate H laminate is superposed on the surface in contact with the adhesive layer. The resulting laminate was pressurized with a rubber roller, and two strips of an optical member to which a release polymerized polyethylene diester film was attached were attached. 31 201139594 (Examples 2-2 to 2-8, Comparative Examples 2-1 to 2-3) Except that the monomer composition of the acrylic copolymer and the amount of ethyl acetate at the time of the reaction were changed, An optical film having a release-coated polyethylene terephthalate film attached to both sides was obtained in the same manner as in Example 2-1 except that the ratio (% by weight) of the constituent units and the weight average molecular weight of the acrylic copolymer were shown. The member has adhesive tape on both sides. (Example 3-1) (1) Production of an acrylic copolymer In a reactor equipped with a thermometer, a stirrer, and a cooling tube, 59.3 parts by weight of 2-ethylhexyl acrylate and 35 parts by weight of isomeric acrylate were added. 0.5 parts by weight of acrylic acid, 2 parts by weight of 2-hydroxyethyl acrylate, 2 parts by weight of Blemmer PME-1 作为 as a monomer having a structure represented by the general formula (1-1) (repeated number of ethylene oxide = 5 parts by weight of a 23' terminal methyl group, manufactured by Nippon Oil Co., Ltd., and 00 parts by weight of ethyl acetate 100 with respect to 100 parts by weight of the monomers, and after nitrogen substitution, the reactor was heated to start reflux. After 30 minutes, 0.2 parts by weight of the third hexyl peroxypivalate as a polymerization initiator was diluted with 5 parts by weight of ethyl acetate with respect to 100 parts by weight of the monomer, and the polymerization initiation was carried out. The solution was added dropwise to the above reactor over 2 hours. Thereafter, the mixture was refluxed for 8 hours from the start of the addition of the polymerization initiator at 70 ° C to obtain an acrylic copolymer solution having a solid content of 50%. Further, the obtained acrylic copolymer was subjected to a "2690 Separation Model" manufactured by Waters Co., Ltd. as a column, and the weight average molecular weight in terms of polystyrene was measured by a GPC method. The weight average molecular weight obtained is shown in Table 3. 32 201139594 'Addition of 5 parts by weight of crosslinked bismuth, plus (2) adhesive tape for optical members manufactured in 1 part by weight of the obtained acrylic copolymer, C之r〇nate 剂 (曰本聚酯酯公司Manufacture) An adhesive composition for an optical member is prepared by stirring. Applying the obtained optical member adhesive composition to the release-treated surface of the release polyethylene terephthalate film to form an adhesive layer having a thickness of 1 Å in the obtained adhesive layer ± The newly prepared release polyethylene terephthalate film is superposed on the mold-treated surface in contact with the adhesive layer to obtain a laminate. The laminate obtained by the use of the rubber (10) is pressurized, thereby obtaining a double-faced belt for the optical member to which the release-coated polyethylene terephthalate film is attached. (Examples 3 - 2 to 3 - 9, Comparative Examples 3 - 1 to 3 - 5 ) In addition to changing the monomer composition of the acrylic copolymer to be as shown in Table 3 or 4, it was obtained as shown in Table 3 or 4. A double-sided adhesive tape for an optical member to which a release polyethylene terephthalate film was attached on both sides was obtained in the same manner as in Example 3 except that the acrylic copolymer having a weight average molecular weight was used. (Embodiment 3 - 10)

59.4 parts by weight of 2-ethylhexyl acrylate, 35 parts by weight of isopropyl acrylate, and 0.5 parts by weight of acrylic acid, as a monomer having a structure represented by the general formula (i _), Blemmer PME-1000 (epoxy B) The number of repeats of the alkane = 2 3 'terminal methyl group, manufactured by Nippon Oil Co., Ltd.) 0.1 parts by weight of 5 wuwu, 1 / τ enoate, and (mixed by Ciba-Geigy Co., Ltd., trade name "lrgacure 651") After that, a nitrogen purge was performed to prepare a monomer composition in which dissolved oxygen was removed. 33 201139594 The obtained monomer composition is sandwiched in a thickness of 38 hearts by a rigid core spacer in the form of a thickness of 〇 〇 2 2 2 2 2 2 2 以 以 以 以 以 以 以 以 以Each of the release-treated surfaces is in contact with the monomer composition. n A fluorescent lamp having a dominant wavelength of 365 nm is used, and the monomer composition is irradiated with 2 readings of ultraviolet rays for 5 minutes to polymerize the monomers, thereby obtaining double-sided adhesion and dislocation. The optical member of the polyethylene terephthalate film has a double-sided adhesive tape. Further, since the crosslinked structure is formed simultaneously with the polymerization, it is difficult to measure the weight average molecular weight of the obtained acrylic copolymer. (Example 3-1 1 to 3-1 8. Comparative Example 3-6 to 3-1 0) Except that the monomer composition of the acrylic copolymer was changed to obtain an acrylic copolymer as shown in Table 5 or 6, In the same manner as in Example 3_丨〇, a double-sided adhesive tape for an optical member to which a release-molding polyethylene terephthalate film was attached was obtained. (Example 4-1) (1) Production of a copolymer of propofol acid In a reactor equipped with a thermometer, a stirrer, and a cooling tube, 59.3 parts by weight of 2-ethylhexyl acrylate and 35 parts by weight of isodecyl acrylate were added. And 0.5 parts by weight of propylene oxime, 0.2 parts by weight of 2, hydroxyethyl acrylate, and Blemmer PSE-1300 (the number of repetitions of ethylene oxide = 30, which is a monomer having a structure represented by the formula (1-2). 5 parts by weight of a terminal octadecyl 'an oil company, and 1 part by weight of ethyl acetate with respect to 100 parts by weight of the monomers were replaced with nitrogen, and then the reactor was heated to start reflux. After 30 minutes, 〇·2 parts by weight of the third hexyl peroxypivalate as a polymerization starting agent 34 201139594 was diluted with 5 parts by weight of ethyl acetate with respect to 100 parts by weight of the monomer. The polymerization initiator solution was added dropwise to the above reactor over 2 hours. Thereafter, the mixture was refluxed for 8 hours from the start of the addition of the polymerization initiator at 70 ° C to obtain an acrylic copolymer solution having a solid content of 50%. For the obtained acrylic copolymer, a "2690 Separations Model" manufactured by Waters Co., Ltd. was used as a column, and the weight average molecular weight converted by polyethylene was measured by a GPC method. The weight average molecular weight obtained is shown in Table 7. (2) The adhesive tape for optical members was prepared by adding 5 parts by weight of Coronate HX (manufactured by Nippon Polyurethane Co., Ltd.) as a crosslinking agent to 1 part by weight of the obtained acrylic copolymer, and stirring to prepare an adhesive for optical members. Composition. Applying the obtained optical member adhesive composition to the release-treated surface of the release polyethylene terephthalate film to form an adhesive layer having a thickness of (10) _ on the obtained adhesive layer The mold-treated surface is placed in contact with the adhesive layer to overlap the newly prepared release-type poly(p-diphenylene dicarboxylate) to obtain a laminate. The resulting laminate and the β-layer are pressed by a rubber roller, thereby obtaining a two-sided adhesive tape with two sides attached to the pre-molded polyethylene terephthalate.

, 々乜 々乜 々乜 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Optical transmission of ethylene terephthalate film: two-sided adhesive tape with mold release and drying on both sides. 35 201139594 (Example 4-10) 59.4 parts by weight of 2-ethylhexyl acrylate was used to damage 35 parts by weight of isodecyl acrylate and 0.5 part by weight of propyl acrylate, as represented by the formula (Μ) Blemmer pse]3()() of the monomer of the structure (repeated number of epoxy bake = 3 〇, manufactured by Nippon Oil Co., Ltd. at the end of the 18th base), κ hexanediol dipropylene M parts by weight and 2,2-dimethoxy-t-phenylphenyl hydrazine (manufactured by DBA-Geigy Co., Ltd., trade name "Bu (4) (4) 651") were uniformly mixed, and then nitrogen purged to prepare a dissolved oxygen-removed single. The obtained monomer composition was cut into a thickness of 38 by a spacer of 100 by a thickness of 1 in a claw, and was released into a polyethylene terephthalate film by a claw. So that each release-treated surface is brought into contact with the monomer composition. Then, using a fluorescent lamp having a dominant wavelength of 365 nm, the monomer composition is irradiated with ultraviolet rays of 2 mW for 5 minutes to polymerize the monomers, thereby obtaining a double-sided sticker. A double-sided adhesive tape for an optical member with a release-molecular polyethylene terephthalate film. Further, since cross-linking is formed simultaneously with polymerization Because of the structure, it is difficult to measure the weight average molecular weight of the obtained acrylic copolymer. (Examples 4-11 to 4-1 8. Comparative Example 4-2) The monomer composition of the acrylic copolymer was changed as shown in Table 8. In the same manner as in Example 4-10, a double-sided adhesive tape for an optical member to which a release-polyethylene terephthalate film was attached was obtained in the same manner as in Example 4-10. (Evaluation) For Examples and Comparative Examples The optical member obtained in the above was evaluated by the double-sided adhesive tape' as follows. The results are shown in Tables 1 to 8. 36 201139594 (1) Measurement of gel fraction The single-sided peeling of the optical member obtained from the two-sided adhesive tape was carried out. Release the polyethylene terephthalate film, use a spoon to scrape the adhesive layer of the adhesive tape on both sides of the optical member, and measure the weight of the block of the adhesive W. It will adhere at 23 C. After the block of the agent was immersed in ethyl acetate for 24 hours, the block of the adhesive was taken out from the acetonitrile acetate through a 200 mesh stainless steel mesh, and dried under the conditions of 11 0 C for 1 hour. The weight of the adhesive block W2, the gel fraction was calculated by the formula (1). (2) Evaluation of the generation of whitening (measurement of the haze value) The obtained optical member was peeled off from the both sides of the double-sided adhesive tape to release the release copolymerized polyethylene terephthalate film. A transparent polyethylene terephthalate film is attached to the surface of one side, and a glass slide (trade name "s_l2i4", manufactured by MATSUNAMI & Division) is attached to the other surface to produce transparent polyethylene terephthalate. A test piece having a three-layer structure of an adhesive layer/slide glass on a double-sided adhesive tape for an optical varnish/optical member, and a measurement using a fog meter (automatic fog meter "TC HniDpK", manufactured by Tokyo Denshoku Co., Ltd.) The haze value (%) immediately after the preparation of the test piece and the haze value (%) of the test piece after the test piece was placed under high temperature and high humidity of 8 (TC, 85% RH for 24 hours, using the following formula (2) ) Calculate the delta value. △ Haze value (%) = {Haze value of the test piece after 24 hours of placement {Fog value after the test piece was just produced (% } ( 2 ) (3) Evaluation of adhesion force The optical member obtained with the double-sided adhesive tape Cut into a flat shape with U mmx 100 mm. The optical member to be cut off is peeled off from the polyethylene terephthalate film by one of the double-sided adhesive tapes, and the optical member is exposed by the adhesive tape of two ^ 37 201139594 It is bonded to the polyethylene terephthalate film. Further, the release optical member is coated with another release polyethylene terephthalate film on both sides, and the optical member is bonded to the exposed surface of the double-sided adhesive tape. On a polycarbonate plate (pc plate), a laminated sample of a double-sided adhesive tape for an optical member and a polyethylene terephthalate film was sequentially laminated on a polycarbonate plate (pc plate). The rubber sheet was reciprocated once at a speed of 300 mm/min by placing a rubber of 2.0 kg on the polyethylene terephthalate film of the obtained laminated sample, and the polycarbonate sheet (pc board) was The optical member is placed on both sides with an adhesive tape placed at 23t for 2 minutes. Test sample. For the obtained test sample, the tensile test at 180° in the direction of peeling speed of 3〇〇mm/min was carried out according to JIS z〇237, and the initial adhesion (n/25 mm) was measured. After the sample was left at 23 ° for 24 hours, it was subjected to 180 at a peeling speed of 3 〇〇 mm/min in accordance with JIS Z0237. The tensile test in the direction 'measured the adhesive force after 24 hours (n/25 mm). (4) Air bubbles Production state (explosion resistance test) The obtained optical member was cut into a planar shape of 45 mm x 6 mm with a double-sided adhesive tape. The optical member to be cut off was peeled off from the polyethylene terephthalate by one of the two-sided adhesive tape. In the ester film, the exposed surface of the optical member is bonded to the polyethylene terephthalate having a thickness of 0.5 mm on the exposed surface of the double-sided adhesive tape. Further, the release-off poly-p-benzene of the double-sided adhesive tape for the optical member is peeled off. A dimethyl hydrazine long-stained smear film was obtained by attaching an optical member to an exposed surface of a double-sided adhesive tape to a polycarbonate plate (pc plate) having a planar shape having a thickness of 2.0 mm, thereby obtaining a polycarbonate plate (PC). On the board), two layers of optical components are used in sequence. A laminated sample of the adhesive tape and the polyethylene terephthalate film. Thereafter, 38 201139594 kg of the laminated sample is applied to the temperature. ^ ^ conditions, or temperature 6 (TC and relative humidity (RH) 90% Under the conditions, the static solution, 〇, was allowed to stand for 24 hours under a 4 to obtain a test sample. The test sample obtained by visual inspection was found to have a state of blistering at the interface of the receiver. = No 观察. The case of the size of the bubble is recorded as "the bubble of the size of 5 〇〇ι_ or more is observed for every i test sample" as "eight, face - nv death t Δ J In the case of more than 6 〇. 〇 1 mm or more 轧 | 轧 轧 轧 轧 轧 轧 评价 评价 评价 评价 评价 评价 评价 评价 评价 评价 评价 评价 评价 评价 评价 评价 评价 评价(5) The optical components that are attached to the whitening of the IT 用 are free from the rain and are private. _ The two sides of the two sides are used to peel off the release poly(paraphenylene terephthalate) and the acid ethylene glycol film. The surface of the surface is attached with a enamel film, and the other surface is attached with a glass slide (trade name "ς"), which is manufactured by b-1214MATSUNAMI Co., Ltd., and the ITO film/optical member is used for the letter--she uses the two-sided adhesive tape to have Adhesive layer / glass

A test piece of a three-layer structure of the sheet. The test piece was placed under high temperature and high humidity of 80 t and 85% RH, and a fog meter (automatic fog meter "TC side pulse", manufactured by Tosoh Electric Co., Ltd.) was used. The fog value (0/〇) immediately after the production of the 'Be J疋 test piece, and the test value after 24 hours of placement are only the Chiang value (〇/0), and the delta value is calculated by the above formula (2). . The Δ fog value is violated. 1 The value of the violation of 0_2 is evaluated as “◎”, the case of 〇.2 or more and less than 3 is evaluated as “〇”, and the case of 3 or more and less than 4 is evaluated as “ △"' The case of 4 or more was evaluated as "X". (6) Evaluation of resistance between enamel films The obtained optical member was cut into a planar shape having a length of 40 coffee widths by a double-sided adhesive tape. Further, the two corners adjacent to each other in the width direction are cut by a plane shape having a length of 1 〇 _ from the angle, a width of 1 from the corner, and a size of 39 201139594, thereby obtaining a convex strip sheet. One of the strips of the convex strip was peeled off to release the polyethylene terephthalate film, and the exposed surface of the convex strip was attached to polyethylene terephthalate. Further, another release polyethylene terephthalate film of the convex tape sheet is peeled off, and the exposed surface of the convex tape sheet is bonded to the ITO having a planar shape of a length of 40 mm×width of 6 mm. On the ITO film surface of the film, a conductive film laminate having a double-sided adhesive tape for an optical member and polyethylene terephthalate was sequentially laminated on the IT film surface of the IT film. Thereafter, the initial resistance value of the obtained conductive film laminate was measured. In addition, the ferroelectric film laminate was placed under high temperature and high humidity of 6 (rc and relative wetness of 90% RH for 100 hours, and an amorphous ITO film (manufactured by Oike Industrial Co., Ltd.) was used to measure the conductive film after standing. The resistance value of the laminated body is measured. The terminal of the 2-terminal resistance value measuring device is aligned with the exposed surface of the ITO surface of the size of 1 mm mm〇, and the resistance value is measured. The resistance value calculated by the following formula (3) is used. Rate of change, evaluate the degradation level of IT0. Change rate of resistance value („, ^ /〇) = ( R, - R〇) /R〇xl〇〇( 3 ) In equation (7), ' represents the initial resistance value, and R1 denotes the high temperature. High humidity] The resistance value after 10 hours is placed. Further, the resistance change rate of the resistance value is preferably 20% or less, more preferably 15 〇/". If the resistance value change rate exceeds the fiber, there is a film having a (10) film. The part of the control panel is wheeled into the twist & 'The electrical signal of the dysentery, and the effect on the response》 μμ 40 40 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 39 10,000 1 Bu 16.7 X CN m cs o Bud cs 64.0 35.0 d ιη Ο 64.0 35.0 ο ο 650,000 JO 4.21 X CS (N (N 1.14 〇\ 〇\ 〇< 1 39.5 30.0 30.0 ο 39.5 30.0 1 30.0 1 ο 690 00 丨 0.08 〇 〇 1. \ 1.29 00 VO << Example ΙΤΪ 63.5 35.0 〇*— μ νη ο 63.5 35.0 q Ο 580,000 卜 1.03 〇 (N U9 *—Η Os 〇〇tr·^ 59.5 35.0 ο in ο 59.5 35.0 o vi Ο 6 million 卜 | 0.89 〇艺 1.14 Os vd 〇〇CO 54.5 35.0 10.0 U-> Ο 54.5 | 35.0 I | lo.o | ο 600,000 | 0.33 ON ON ON CS 00 〇〇 (N 49.5 35.0 ! 1 ^·〇V) ο | 35.0 | 1 ^-o 1 ο 63 million 0.19 〇00 1.20 CN 〇〇1 44.5 30.0 25.0 ^Ti ο 丨化| 30.0 I 25.0 ο 1 62 000 | (N 00 | 0.04 | 〇W-) 2-Ethylhexyl acrylate isodecyl acrylate 2 -Hydroxyethyl acrylate 1 2-ethylhexyl acrylate isodecyl acrylate 2-hydroxyethyl acrylate weight average molecular weight gel fraction (%) △ haze value (%) ! whitening when attached to ITO film Adhesive strength (PC board) (N/25mm) Adhesion after 24 hours (PC board) (N/25 mm) Adhesion/initial adhesion resistance change rate after 24 hours (60°C 90% RHxl00h) (%) 85〇C x24 h 60°C χ90% RH><24 h resistance to foaming test monomer composition (parts by weight) proportion of constituent units (% by weight) Evaluation 201139594 [<Νί Comparative Example Ro «Ν 64.5 1 35.0 I 〇〇〇64.5 1 1 35_0 〇〇in ο ο | 67 million | iTi 00 00 X (N 1.19 Ο) 〇〇<Ν <Ν 64.0 ; 1 35.0 〇〇64.0 « 35.0 in d ο Ο 650,000 m 00 6.92 X 卜 vd 〇 < (Ν 54.5 ; 1 15.0 30.0 〇 54.5 1 15.0 30.0 ΙΛ ο ο 53 million F*H 卜 0.13 〇 1.4 1.40 ο <1 <] Example 00 <;Ν 59.5 1 20.0 20.0 〇59.5 1 20.0 20.0 Ο 380,000 | 0.87 I 〇VO 1.25 <Ν 〇0 Γγ (Ν 59.5 t 20.0 20.0 〇515 1 20.0 20.0 ο S 720,000 Li-22 1 〇 to 1.27 ο ν 〇〇〇(Ν 1 69.5 | 15.0 15.0 d I 69.5 ” 5.0 15.0 u-ϊ ο [JO3 million | | 0.95 I 〇00 〇1.25 I ΓΛ 〇〇 (Ν 63.5 1 | 35.0 | 〇Ο 1 63.5 1 1 | 35.0 I ο r—Η Ο ο | 62 million | 00 in 1 <1 rg 1.14 I οό 〇〇(Ν 59.5 1 | 35.0 I 〇ο 1 59.5 丨1 | 35.0 | Ο ο ο 62 million § ;2.46 〇(Ν Os 00 〇〇Γ^ϊ CN —59丄t | 30.0 I | lo.o | yn ο 1 59.5 1 1 | 30.0 | lo.o 1 Ο ο 59,000 | 〇 〇 〇 ΓΊ ΓΊ & Ν Ν Ν Ν Ν丨59.5 1 « | 20.0 I 20.0 d 1 59-5 1 1 | 20.0 | 1 20.0 1 Ο 100 丨 570,000 | t^· | 0.92 I 〇co 1-23 1 ΟΝ 〇\ 〇〇CS 59.5 1 | 15.0 I 1 25.0 1 Ο 1 59_5 | 1 | 15.0 I 1 25.0 1 iT) Ο Ο 550,000 | 0.24 〇as rH 1.22 ο νο 2- 2-ethylhexyl acrylate n-butyl acrylate isodecyl N-vinylpyrrole 2-ethylhexyl acrylate 2-ethylhexyl acrylate n-butyl acrylate isodecyl oxime-vinyl pyrrolidone acrylate ethyl acetate (parts by weight) weight average molecular weight gel fraction (%) △ haze value ( %) Adhesion (PC board) when attached to ITO film (N/25mm) Adhesion after 24 hours (PC board) (N/25mm) Change rate of adhesion/initial adhesion resistance after 24 hours (60°c 90%RHxl00h) (%) 85°C><24h 60〇Cx90%x24h Anti-foaming test 1 Monomer composition (parts by weight) Proportion of constituent units (% by weight) Evaluation 201139594 [ε ΐ EXAMPLE ο\ m 59.3 I 35.0 I (Ν 〇ir> 〇1 1 1 1 »〇1 1 1 Os σ\ 0.04 〇(N u-» (N ro 〇〇οο Γ〇59.3 35.0 〇〇1 1 1 1 1 1 1 芝 0.15 〇ON fS 〇〇rj- m 59.3 35.0 CN 〇Ο 1 •η 1 1 1 1 1 1 v〇00 cn <〇〇<N 1.28 ο Os 0 〇m 59.3 35.0 CN 〇ο V ) 1 1 1 1 1 1 1 CN 0.56 〇CN (N VO cs 1.18 10.9 〇〇ι〇63.3 35.0 (Ν 〇1 1 t 1 1 1 1 in 〇0.89 〇〇〇Γ<^ 44.3 25.0 (Ν 〇ο 1 1 t 沄1 1 1 1 00 (N \〇0.18 〇in 卜 1.13 10.4 〇〇rn ΓΛ 49.3 35.0 (Ν d ο 1 1 1 u-ϊ 1 1 1 1 so 0.15 〇00 ΓΛ (N 00 <N Os 〇〇<Ν m 63.3 35.0 (N 〇Ο 1 1 1 - 1 1 1 1 0.07 ◎ <s fS 〇ro 〇〇fA 59.3 35.0 d Ά Ο > 1 1 «η 1 1 1 1 - 0.12 〇ΓΛ CN 00 (N (N tN On »〇〇〇2-ethylhexyl acrylate isodecyl acrylate 2-hydroxyethyl acrylate acrylic acid company made by Nippon Oil Co., Ltd., manufactured by Nakamura Chemical Industry Co., Ltd., manufactured by Nippon Oil Co., Ltd. Social Chemical Company manufactures Nippon Oil Company Manufactured by Oyster Company, manufactured by Nippon Oil Co., Ltd. Manufactured by weight average molecular weight (unit: 10,000) Gel fraction (%) Δ Haze value (%) Adhesion (PC board) when whitened to IT0 film (N/25mm ) Adhesion after 24 hours (PC board) (N/25 mm) Adhesion/initial adhesion resistance change rate after 24 hours (60°C 90%RHxl00h) (%) 85°Cx24h] 60°C x90°/ 〇RHx24 h OS If c R2=曱基〇7\ C PC II (Ν οί. T 1 r2=methyl 1 CO (Ν II c methyl II C 1 methyl 1 > ri II 硪Φ- II Μ oi Inch II C Methyl § II G R2=曱基 Blemmer PME-400 Blemmer ΑΕ-400 _i NK Ester AM-130G Blemmer PME-1000 Light Ester 041 ΜΑ Blemmer PME-2000 Blemmer PME-200 Blemmer PME-4000 with PEO Chain Monomer resistance to foaming test monomer composition (parts by weight) Evaluation 201139594 [Inch ΐ Comparative example r〇39.3 | 25.0 I 〇u-ϊ 1 1 1 «λ 1 1 t 1 s〇ΡΛ 〇〇: 0.14 〇Cs II 1.222 I 〇X <1 can be 63.9 35.0 〇to 〇« 1 1 Ο 1 1 1 1 Ό Ό VO X (N <N s〇<N Tf 〇〇ro m 49.3 35.0 dd 1 1 1 I t 1 »/> 1 JN 9.21 X σ\ CN 1.316 I 〇〇63.3 35.0 fN ο d 1 t 1 I 1 < — 1 (N 1 7.88 IX <N 〇\ wS 〇〇rA 63.3 35.0 (S ο O 1 1 1 1 1 1 1 <N 〇 15.54 X 1.667 I <N 00 X <] 2-ethylhexyl acrylate isodecyl acrylate 2-hydroxyethyl acrylate acrylic acid company made by Nippon Oil Co., Ltd. Manufactured by Nakamura Chemical Industry Co., Ltd. The company is manufactured by Nippon Oil Co., Ltd., which is manufactured by Nippon Oil Co., Ltd., and manufactured by Oyster Oil Co., Ltd.. 1 Weight average molecular weight (unit: 10,000) I Gel fraction (%) △ Haze value (%) Adhesion or adhesion when attached to 1TO film Force (PC board) (N/25mm) Adhesion after 24 hours (PC board) (N/25mm) Adhesion/initial adhesion 24 resistance change rate after 24 hours (60°c 90%RHxl00h) (%) 85 °Cx24h 60°C x90% RHx24 h 〇\ II C &- II 〇II CX II TC 1 R2=methyl 1 fS II c | methyl | 1! c 1 R2=methyl 1 II C 1 R2=A Base | τΤ II c 1 methyl | § II C 1 R2 = methyl Blemmer PME-400 Blemmer AE-400 NK Ester AM -130G Blemmer PME-1000 Light Ester 041 ΜΑ Blemmer PME-2000 Blemmer P ME-200 Blemmer PME-4000 monomer with PE0 chain 1 foam resistance test monomer composition (parts by weight) Evaluation 201139594 -<] 3-18 1 59.4 1 35.0 〇ο 1 t 1 1 1 (N 00 0.03 ◎ 〇\ (N (N (N wS 〇〇1 3-17 59.4 I 35.0 d ο 1 1 1 1 p- 0,12 ◎ 1.20 p 〇〇I 3-16 59.4 35.0 d ο 1 1 1 00 ο ΓΟ Ο Os VO ίΝ m 〇〇1 3-15 59.4 35.0 ο ο 1 1 1 CN 0.52 〇<N ON 5 〇〇Example 1 3-14 63.4 35.0 ir> Ο ο I 1 1 00 ο 〇〇\ m (N <N o 〇〇1 3-13 44.4 25.0 «/> ο ο t 1 1 fN 〇\ 0.18 〇m Ό 00 〇\ 〇〇1 3-12 49.4 35.0 Ά ο ο 1 1 1 ON 00 0.13 〇卜ΝΝ 1.29 〇〇1 3-11 63.4 35.0 •ο ο ο 1 1 — 1 m 00 0.09 ◎ 10.0 〇〇1 3-10 59.4 | 35.0 ο ο 1 1 1 00 0.08 ◎ Os u-> σί 〇〇Acrylic 2 -ethylhexyl acrylate isodecyl acrylate 1,6-hexanediol diacrylate Nippon Oil Co., Ltd. manufactured by Nippon Oil Co., Ltd. i 1 New Nakamura Chemical Industry Co., Ltd. Division Manufacturing Co., Ltd. Co., Ltd. manufactures oyster oil company, manufactures oyster oil company, manufactures oyster oil company, manufactures gel fraction (%) Δ fog value (%), whitening adhesion when attached to enamel film (PC board) N/25mm) Adhesion after 24 hours (PC board) (N/25 mm) Adhesion/initial adhesion resistance change rate after 24 hours (60°C 90%RHx!00h) (%) 85°C x24 h 60 ° C 90% RHx24h Os II C R2 = mercapto io TCX II (N a: τ C R2 = mercapto CM II c I methyl | ο rn II c R2 = mercapto | Τι II c tl ΓΝ inch II c R2=曱基§ II c &- II Blemmer PME-400 Blemmer AE-400 ΝΚ Ester AM-130G Blemmer PME-1000 Light Ester 04IMA Blemmer PME-2000 Blemmer PME-200 Blemmer PME-4000 with PEO chain Foaming test monomer composition (parts by weight) Evaluation 201139594 [9 ί 3-10 39-4 | 25.0 I dd 1 1 1 m 1 1 1 1 5; 0.12 ◎ 00 2 m m · 〇〇X < σ\ 64.0 35.0 Ο o 1 1 1 pair d 1 1 t 1 5.33 X CN 1.25 1〇 (N 〇〇Comparative example 00 rn 49.4 I 35.0 I do 1 t 1 1 1 1 1 ! 8.29 1 X 〇〇 Ο) 〇〇m 63.4 I 35.0 ! do 1 1 1 1 1 1 — 1 7.21 X 〇\ (N 〇\ 〇〇v〇m 63.4 35.0 od 1 1 1 1 1 1 1 A $ 13.2 X m in Bu VO X 0 2-ethylhexyl acrylate isodecyl acrylate 1 , 6-hexanediol diacrylate gg 曰 oil company manufacturing Nippon Oil Co., Ltd. Manufactured by Nakamura Chemical Industry Co., Ltd. 曰 Oil Company Manufactured by Kyoei Chemical Co., Ltd. 曰 Oil Company 曰 Oil Company Manufactured by Nippon Oil Co., Ltd. %) Δ Haze value (%) Adhesion (PC board) when attached to ITO film (PC board) (N/25mm) Adhesion after 24 hours (PC board) (N/25mm) Adhesive force after 24 hours / initial Adhesion resistance value change rate (60 ° C 90% RHx! 00h) (%) 85 〇 C x 24 h 60 ° C 90% RHx24h Os II c 1 methyl 1 ο Τ \ C 3: II fN T c 1 r2 = Methyl | rn < N II c | methyl | II C 1 R2 = methyl 1 > 〇 II c 1 r2 = methyl | II c 1 methyl § II c 1 methyl Blemmer PME-400 Blemmer ΑΕ- 400 NK Ester AM-130G Blemmer PME-1000 Light Ester 04IMA Blemmer PME-2000 Blemmer PME-200 Blemmer PME-4000 Single foam resistance test with PEO chain (逋 parts) Evaluation 9 inch 201139594卜 1 Comparative Example ι 1 | 29.3 1 | 35.0 1 (N 〇in 〇ΓΛ 1 1 132 1 〇 \ 0.00 ◎ Bub - XX Example Os 1 64.2 1 35.0 (N 〇〇Ο t »/*5 〇 0.04 ◎ rn (N 卜 9.0 9.0 〇〇 4-8 59.3 35.0 (N 〇〇 1 5; 0.36 〇 00 fN (N (N fN Os 卜 〇〇 1 34.3 35.0 1 ° · 2 in ο 1 121 1〇 〇0.00 ◎ v〇ON 1.50 〇\ <] Ο vo 1 inch 44.3 35.0 (N s Ο 1 (N Os i 0.00 ◎ ο rn o 10.0 〇<] 1 49.3 35.0 0.2 ι〇ο 1 〇s oo 00 00 | 0.00 1 ◎ 00 (N fN (N (N Os 〇〇 4-4 62.3 35.0 0.2 Ο (Ν ( oo un ί 0.00 ◎ ro (N 00 (N rs (N 〇〇ΓΛ 〇〇ΓΛ 1 甘 63.8 35.0 ( N 〇in ο un ο 1 (N 0.02 ◎ TT (N 卜 fN my/Ί 〇〇CN 1 inch rn 35.0 (N 〇ιη ο — 1 00 > 〇 0.02 ◎ (N 〇v (N ο 00 〇〇1 〇s in | 35.0 I 1 0-2 1 ιη ο 1 VO 〇00 1 o.oi 1 ◎ (N fN (N 00 76 1 2- 2-ethylhexyl acrylate isodecyl acrylate 2-hydroxyethyl acrylate) Acrylic acid oil company manufactures daily oil company to produce weight average molecular weight (unit: 10,000 Gel fraction (%) △ Haze value (%) Adhesion (PC board) (N/25 mm) when whitened to 丨TO film (N/25 mm) Adhesion after 24 hours (PC board) (N/25 mm 1) Adhesion/initial adhesion after 24 hours V_/ r~soo XX 〇CN〇〇s P ___- 85〇C χ24 h 60°C 90% RH><24 h ο m II s ! r4 = ten Octaalkyl On 11 E R4 = Dodecyl Blemmer PSE-1300 Blemmer PSE-400 ! Monomer with PEO chain '^»11) Foaming resistance test monomer composition (parts by weight) Evaluation 201139594 [00<] 1 Comparative Example I <N 1 29.4 1 35.0 I 〇ο 1 00 Os 1 o.oo 1 ◎ r*» v〇OO 00 XX 4-18 64.3 35.0 ο ο 5 1 0.04 ◎ IT) (N 1.19 On 〇〇4 -17 59.4 35.0 Ο ο 1 m § 0.41 〇 〇 〇 cs oo in 〇〇 4-16 34.4 : 35-0 κη ο ο oo Os 0.00 ◎ iT) 00 s 10.3 0 < 4-15 44.4 35.0 uo ο ο On 0.00 ◎ 〇〇20 ΓΛ 00 〇<] Example 4-14 1 49.4 1 1 35.0 I ο ο m Os 00 0.00 ◎ Bu (N (N 10.7 〇〇4-13 丨35.0 ο ο (N 1 o.oo ◎ 〇\ ro rN L'-21 ^r oo 〇〇4-12 ! 63.9 1 35. 0 Ο ο ίΠ 0.02 ◎ 〇 (N Art Cs oo 〇〇 4-11 L63-4J 35-0! irj Ο ο — 00 00 O.OjJ ◎ m CN (N mo 〇〇4-10 ί ^4j 3—5.0 | ο ο 0.01 ◎ ο <Ν o (N 卜'Ο 〇〇 2-ethylhexyl acrylate isodecyl acrylate acrylic acid 1,6-hexanediol diacrylate Nippon Oil Co., Ltd. Glue fraction (%) Δ Haze value (%) Adhesion (PC board) (Ν/25 mm) when whitened to ITO film (adhesive force after 24 hours (PC board) (N/25mm) 24 hours Post-adhesion/initial adhesion resistance change rate (60°C 90% RHx 100 h) (°/〇) 85〇Cx24 h 60°C 90%RHx24h Ο II Ε r4=18 炫 ON II ε 12 Alkyl 1 Blemmer PSE-1300 Blemmer PSE-400 Monomer foaming test monomer composition with ΡΕΟ chain (parts by weight) Evaluation 201139594 [Industrial Applicability] In addition, the composition is provided according to the present invention. - an optical adhesive composition for optical members which can be inhibited from high temperature and high humidity, and which can be used in accordance with the present invention, can provide an optical member using the optical member. The optical member adhesion adhesive tape is manufactured only. [Simple description of the diagram] None [Key component symbol description] None 49

Claims (1)

201139594 VII. Patent application scope: 1. An adhesive composition for optical components containing an acrylic copolymer'. The acrylic copolymer is 1 to 25 wt% of N-vinylpyrrolidine by containing 2·hydroxyethyl acrylate. _i~% by weight, a monomer having a structure represented by the following formula (1-1): 5% to 3% by weight, or a structure having a structure represented by the following formula (1-2) The mixed monomer of 1 to 3% by weight of the body is polymerized to obtain: R1 \(C2H4〇)n - R2 (1~1) In the formula (1-1), R1 represents a hydrogen atom or a methyl group, r2 Represents a hydrogen atom or an alkyl group having a carbon number of less than 3, η represents an integer of 8 to 45; R3 ^ir/〇Nc2H4〇)m-R4 (1'2) In the formula (1-2), R represents a hydrogen atom Or a fluorenyl group, the rule 4 represents an alkyl group having 3 to 30 carbon atoms, and m represents an integer of 8 to 45. 2. The adhesive composition for an optical member according to claim 1, wherein the acrylic copolymer is 0.5 to 30% by weight or more by containing a monomer having a structure represented by the formula ("丨") The monomer of the structure represented by the formula (12) 50 201139594 is obtained. 0.1 to 30% by weight of the mixed monomer is polymerized and 3. If the patent application is as specified, the composition of the J is A monomer having a structure represented by the formula (1 2), wherein the monomer is 0. 1 to 30 wt%/❶, is obtained by polymerizing an early body. 4. As described in the patent application, the formula (1-2), in the number 18, the m is 30. The optical member for the optical member R3 is a hydrogen atom or a methyl group, and R4 is carbon 5. As described in the scope of the patent, paragraphs 2, 3 or 4. The adhesive composition for an optical member, wherein the acrylic copolymer has a weight average molecular weight of 茑1.5 million. 1 6. The adhesive composition for an optical member according to item i, 2, 3, 4 or 5 of the patent application, Wherein, the mixed monomer further contains a bicyclic ring structure and an olefin The monomer of the double bond is 1 to 60% by weight. 7. The adhesive composition for an optical member according to claim 6 of the invention, wherein the bicyclic ring structure is an isodecyl double bicyclic ring structure. The adhesive composition for an optical member according to Item 6 or 7, wherein the dilute double bond is a dilute hydrocarbon double bond of a (fluorenyl) acrylonitrile group. 9. If the scope of application is i, 2, 3, 4 An adhesive composition for an optical member according to item 5, 6, 7, or 8, wherein the mixed monomer further contains a (fluorenyl) acrylate monomer having a structure represented by the following formula (2): 3 〇 8 〇 Weight 0/〇: 51 0 201139594 o., rd (2) In the formula (2), R5 represents a hydrogen atom or a fluorenyl group 'r6 represents an alkyl group having a carbon number of 3 to 14; the hydrogen atom of the alkyl group of R6 may be The adhesive composition for an optical member according to claim 9, wherein the (meth)acrylic acid granule having the structure represented by the general formula (2) is selected from the group consisting of Among the groups consisting of (methyl)acrylic acid 2-ethylhexanoic acid, (meth)acrylic acid octyl sulphate and (meth)acrylic acid butyl vinegar At least one kind of (mercapto) acrylate monomer. 11. An optical member for bismuth zirconium 2, 3, 4, 5, 6, 7, 8, and the belt has the patent scope of the first object The adhesive layer is formed. The optical member of the 4 1 item is composed of an adhesive 52