JP2013060535A - High viscosity acrylic resin composition and application of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an acrylic resin composition in which the thin film process is possible, and that expresses excellent adhesive power.SOLUTION: The high viscosity acrylic resin composition includes: 60-95 vol% of an acrylic material; and 40-5 vol% of an organic phosphate, and comprises the organic phosphate shown by formula (1) (wherein R1 and R2 are the same or different and are each a linear or branched 1-6C alkyl or aryl; M denotes Mg, Ca, AL, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, K, and/or a nitrogen base made to be a proton; and m denotes 1-3).

Description

  The present invention relates to an acrylic resin composition having high tackiness.

Adhesive tapes are useful in various industrial applications. Double-sided pressure-sensitive adhesive tapes have been used to bond various substrates or surfaces together, and these are particularly useful in industrial applications. It has been found that double sided adhesive tapes having pressure sensitive adhesive (PSA) on one side and pressure sensitive adhesive on multiple sides are useful for gluing the surfaces of similar or dissimilar materials together.
There is also a method of adding a highly flexible resin as a base material to the pressure-sensitive adhesive tape so that the pressure-sensitive adhesive tape after bonding is difficult to peel off.

In addition, the double-sided adhesive tape described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-26880) uses a foam base material as a core material to develop good adhesiveness, and has a specific acrylic type on both sides. Although a pressure-sensitive adhesive obtained by diluting the pressure-sensitive adhesive composition in an organic solvent is applied, the thickness of the tape itself can be limited due to the core material, making it difficult to reduce the thickness of the tape. Moreover, since an organic solvent is used, it is not so preferable from the viewpoint of environmental load.
Patent Document 2 (Japanese Patent Laid-Open No. 2006-152119) discloses a flame retardant pressure-sensitive adhesive composition containing an acrylic copolymer, an epoxy resin, and a polyfunctional phosphorus compound. Although it could be secured, the tackiness was not sufficient.

JP 2010-26880 A JP 2006-152119 A

  An object of the present invention is to provide an acrylic resin composition that can be made thin and exhibits excellent adhesive strength.

式（１）において、Ｒ１およびＲ２は、同一化または異なり、線状もしくは分岐状のＣ１−Ｃ６ アルキル、及び／またはアリールである。
ＭはＭｇ，Ｃａ，ＡＬ，Ｓｂ，Ｓｎ，Ｇｅ，Ｔｉ，Ｚｎ，Ｆｅ，Ｚｒ，Ｃｅ，Ｂｉ，Ｓｒ，Ｍｎ，Ｌｉ，Ｎａ，Ｋ及び／またはプロトン化された窒素塩基であり、ｍは１〜３である。
（２）アクリル系材料が（ａ）炭素数２−１２のアルキル基を有するアクリレートまたはメタクリレートは炭素数が２〜１２のアクリル酸アルキルエステルまたはメタクリル酸アルキルエステル、（ｂ）カルボキシル基含有（メタ）アクリレート、（ｃ）下記の式（２）、式（３）、式（４）で表される平均分子量が５０〜１５０００のメルカプト基が２個以上のメルカプタン化合物であるポリチオール、（ｄ）光重合開始剤を含有する前記（１）に記載の高粘着性アクリル樹脂組成物。

式（２）〜（４）において、Ｚはｍ個の官能基を有する有機残基であり、ｍは２−６の整数であり、ｐおよびｑは０−３の整数である。
（３）前記（１）又は（２）に記載の高粘着性アクリル樹脂組成物を光重合反応で硬化させた高粘着性シート。
（４）前記（３）に記載の高粘着性シートが組み込まれた電子部品又は電気機器。
（５）前記（１）又は（２）に記載の高粘着性アクリル樹脂組成物を基材に塗布後、光重合反応で硬化させる高粘着性シートの製造方法。 The present invention employs the following means in order to solve the above problems.
(1) A highly adhesive acrylic resin composition comprising 60 to 95% by volume of an acrylic material and 40 to 5% by volume of an organic phosphate, and containing an organic phosphate represented by the following formula (1).

In formula (1), R1 and R2 are the same or different and are linear or branched C1-C6 alkyl and / or aryl.
M is Mg, Ca, AL, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, K and / or a protonated nitrogen base, and m is 1 ~ 3.
(2) The acrylic material (a) acrylate or methacrylate having an alkyl group having 2 to 12 carbon atoms is an acrylic acid alkyl ester or methacrylic acid alkyl ester having 2 to 12 carbon atoms, (b) carboxyl group-containing (meth) Acrylate, (c) polythiol, which is a mercaptan compound having two or more mercapto groups having an average molecular weight of 50 to 15000 represented by the following formula (2), formula (3), and formula (4), (d) photopolymerization The highly adhesive acrylic resin composition as described in said (1) containing an initiator.

In formulas (2) to (4), Z is an organic residue having m functional groups, m is an integer of 2-6, and p and q are integers of 0-3.
(3) A highly adhesive sheet obtained by curing the highly adhesive acrylic resin composition according to (1) or (2) by a photopolymerization reaction.
(4) An electronic component or an electric device in which the highly adhesive sheet according to (3) is incorporated.
(5) A method for producing a highly adhesive sheet, wherein the highly adhesive acrylic resin composition according to (1) or (2) is applied to a substrate and then cured by a photopolymerization reaction.

According to the present invention, it is possible to obtain an acrylic resin composition that can be thinned and exhibits excellent adhesive strength.

Hereinafter, embodiments of the present invention will be described. However, the present invention is not limited to the following embodiments and is appropriately designed based on ordinary knowledge of those skilled in the art without departing from the spirit of the present invention. Changes, improvements, etc. are added.
The acrylate or methacrylate having an alkyl group having 2 to 12 carbon atoms used as the acrylic material in the present invention is an acrylic acid alkyl ester or methacrylic acid alkyl ester having 2 to 12 carbon atoms. Examples of (a) include, for example, ethyl acrylate, propyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, octyl acrylate, isooctyl acrylate, decyl acrylate, decyl methacrylate, dodecyl methacrylate and the like.

In the acrylic material used in the present invention, the total amount of the highly adhesive acrylic resin composition is 100% by volume, and the content of (a) is preferably 45 to 80% by volume, and more preferably 50% to 75% by volume. More preferably. When the content of (a) is less than 45%, the tackiness is not expressed, and when it exceeds 80% by volume, the mechanical strength as a sheet is reduced, and thus the adhesive strength is lowered.

  Examples of the (b) carboxyl group-containing (meth) acrylate used in the acrylic material in the present invention include acrylic acid, methacrylic acid, maleic acid, fumaric acid, ω-carboxy-polycaprolactone mono (meth) acrylate, and monohydroxyethyl phthalate ( And (meth) acrylate, (meth) acrylic acid dimer, β- (meth) acryloyloxyethyl hydrogen succinate, and the like.

In the acrylic material used in the present invention, the total amount of the highly adhesive acrylic resin composition is 100% by volume, and the content of (b) is preferably 4 to 10% by volume, and further 5% to 8% by volume. More preferably. When the content of (a) is less than 4% by volume, the effect of improving the adhesive strength is small, and when it exceeds 10% by volume, the entire sheet becomes hard, which also reduces the adhesive strength.

In the acrylic material in the present invention, (meth) acrylates other than (a) and (b) may be added within a range in which the adhesiveness is not lowered in order to ensure the resin physical properties of the sheet.
Examples of (meth) acrylates other than (a) and (b) include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 2-methoxyethyl (meth) ) Acrylate, ethoxyethyl (meth) acrylate, ethyl carbitol (meth) acrylate, phenoxyethyl (meth) acrylate, nonylphenoxyethyl (meth) acrylate, 2-ethylhexyl carbitol (meth) acrylate, diethylene glycol mono (meth) acrylate, Triethylene glycol mono (meth) acrylate, polyethylene glycol mono (meth) acrylate having ethylene glycol unit repeat number of 12 or less, ethylene glycol unit repeat number of 12 or less Methoxypolyethylene glycol mono (meth) acrylate, ethoxypolyethyleneglycol mono (meth) acrylate having ethylene glycol unit repeat number of 12 or less, phenoxypolyethylene glycol mono (meth) acrylate having ethylene glycol unit repeat number of 12 or less, propylene glycol unit repeat number Polypropylene glycol mono (meth) acrylate having a propylene glycol unit repeating number of 12 or less, ethoxypolypropylene glycol mono (meth) acrylate having a propylene glycol unit repeating number of 12 or less, and propylene glycol Phenoxy polypropylene glycol with 12 or fewer unit repeats Mono (meth) acrylate, polybutylene glycol mono (meth) acrylate with butylene glycol unit repeat number 12 or less, polyethylene glycol monomethacrylate with ethylene glycol unit repeat number 12 or less, polypropylene glycol mono with propylene glycol unit repeat number 12 or less Methacrylate, polybutylene glycol monomethacrylate having butylene glycol unit repeat number of 12 or less, 1,2-polybutadiene-terminated urethane (meth) acrylate (for example, “TE-2000”, “TEA-1000” manufactured by Nippon Soda Co., Ltd.), the hydrogen Additives (for example, “TEAI-1000” manufactured by Nippon Soda Co., Ltd.), 1,4-polybutadiene-terminated urethane (meth) acrylate (for example, “BAC manufactured by Osaka Organic Chemical Co., Ltd.) 45 "), polyisoprene-terminated (meth) acrylate, polyester-based urethane (meth) acrylate (for example," UV-2000B "," UV-3000B "," UV-7000B "manufactured by Nippon Gosei Co., Ltd.," KHP "manufactured by Negami Kogyo Co., Ltd. -11 ”,“ KHP-17 ”), polyether-based urethane (meth) acrylate (for example,“ UV-3700B ”,“ UV-6100B ”manufactured by Nippon Gosei Co., Ltd.), bis-A type epoxy (meth) acrylate, 1, 3-butylene glycol di (meth) acrylate, 1,4-butanediol di (meth) acrylate, 1,6-hexadiol di (meth) acrylate, 1,9-nonanediol di (meth) acrylate, neopentyl glycol di (Meth) acrylate, dicyclopentanyl di (meth) acrylate, 2-ethyl-2 -Butyl-propanediol (meth) acrylate, neopentyl glycol modified trimethylolpropane di (meth) acrylate, stearic acid modified pentaerythritol diacrylate, polypropylene glycol di (meth) acrylate, 2,2-bis (4- (meta ) Acryloxydiethoxyphenyl) propane, 2,2-bis (4- (meth) acryloxypropoxyphenyl) propane, 2,2-bis (4- (meth) acryloxytetraethoxyphenyl) propane, trimethylolpropane tri (Meth) acrylate, tris [(meth) acryloyloxyethyl] isocyanurate, dimethylolpropane tetra (meth) acrylate, pentaerythritol tetra (meth) acrylate, pentaerythritol ethoxytetra (meta Acrylate, dipentaerythritol penta (meth) acrylate, although dipentaerythritol hexa (meth) acrylate and the like, not limited to this.

式中Ｚはｍ個の官能基を有する有機残基であり、ｍは２−６の整数であり、ｐおよびｑは０−３の整数である。さらに式（２）、式（３）、式（４）の有機残基Ｚが式（５）、式（６）、式（７）、式（８）であるポリチオールが好ましい。

ここでＲ_２はエチレン基、プロピレン基、ブチレン基等のアルキレン基を表し、ｖ、ｗは１〜６の整数でｘ、ｙ、ｚは０〜６の整数。 As the acrylic material in the present invention, (c) a mercapto group having two or more mercapto groups of polythiol represents a mercaptan compound, and the average molecular weight represented by the formula (2), the formula (3), and the formula (4) is 50 to 50. There are 15000 substances.

In the formula, Z is an organic residue having m functional groups, m is an integer of 2-6, and p and q are integers of 0-3. Furthermore, the polythiol whose organic residue Z of Formula (2), Formula (3), and Formula (4) is Formula (5), Formula (6), Formula (7), and Formula (8) is preferable.

Here, R ₂ represents an alkylene group such as an ethylene group, a propylene group, or a butylene group, and v and w are integers of 1 to 6, and x, y, and z are integers of 0 to 6.

In the acrylic material used in the present invention, the total content of (C) polythiol is preferably 0.04 to 0.5% by volume, with the total of the highly adhesive acrylic resin composition being 100% by volume. When the amount of polythiol is small, the molecular weight of the acrylic matrix constituting the sheet is increased and the adhesiveness may be lowered. On the other hand, if the polythiol is large, the molecular weight becomes too small and the strength as a sheet becomes small, which may also reduce the adhesive strength.

In addition to the resin components (a), (b), and (c), the acrylic material of the present invention is a copolymer of a known polymerizable compound, a known polyfunctional vinyl compound, a polyfunctional acrylate, a polyfunctional acrylic compound, or the like. Crosslinkable component.

The acrylic material of the present invention is preferably (d) polymerized by a photopolymerization reaction with a photopolymerization initiator from the viewpoint of curing reaction control. (D) As a photopolymerization initiator, benzophenone, p-methoxybenzophenone, 4,4-bisdimethylaminobenzophenone, xanthone, thioxanthone, chlorothioxanthone, m-chloroacetone, propiophenone, anthraquinone, benzoin methyl ether, benzoin Ethyl ether, benzoisopropyl ether, benzoin butyl ether, benzyl, 2,2-dimethoxy-1,2-diphenylethane-1-one, acetophenone, 2,2-diethoxyacetophenone, 2-hydroxy-2,2-dimethylacetophenone, 1-hydroxy-cyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-phenylpropan-1-one 1- [4- (2-hydroxy) -phenyl] -2-hydroxy-2-methyl-1-propyl Bread-1-one including but not limited to. However, since a photoinitiator having an absorption wavelength for visible light lacks the storage stability of the paint, it is preferable to use benzophenone and 1-hydroxy-cyclohexyl-phenyl ketone which do not absorb visible light. These photoinitiators may be used alone or in combination.

In the acrylic material used in the present invention, the amount of the (d) photopolymerization initiator added is preferably 0.1 to 5% by volume, with the total amount of the highly adhesive acrylic resin composition being 100% by volume. If it is 0.1% by volume or more, the effect of promoting curing can be obtained, and if it is 5% by volume or less, the curing speed is sufficiently achieved.

The curing accelerator can be used as long as it is a known curing accelerator that reacts with the thermal polymerization initiator and generates radicals. Typical curing accelerators include, for example, tertiary amines, thiourea derivatives, transition metal salts and the like. Examples of the tertiary amine include triethylamine, tripropylamine, tributylamine, and N, N-dimethyl-p-toluidine. Examples of the thiourea derivative include 2-mercaptobenzimidazole, methylthiourea, sibutylthiourea, tetramethylthiourea, and ethylenethiourea. Examples of the transition metal salt include cobalt naphthenate, copper naphthenate, and vanadyl acetylacetonate.

ここで、Ｒ１およびＲ２は、同一化または異なり、線状もしくは分岐状のＣ１−Ｃ６ アルキル、及び／またはアリールであり、メチル、エチル、ｎ-プロピル、イソプロピル、ｎ-ブチル、ｔｅｒｔ−ブチル、ｎ−ペンチル、及び／またはフェニルなどがあげられる。
ＭはＭｇ，Ｃａ，ＡＬ，Ｓｂ，Ｓｎ，Ｇｅ，Ｔｉ，Ｚｎ，Ｆｅ，Ｚｒ，Ｃｅ，Ｂｉ，Ｓｒ，Ｍｎ，Ｌｉ，Ｎａ，Ｋ及び／またはプロトン化された窒素塩基であり、ｍは１〜３である。
これらの有機燐酸塩は前述のアクリル系材料に対して溶解性が小さく、最大でも１０００ｐｐｍの溶解性である。
前記の化学式（１）で示される有機リン酸塩の具体例としては、クラリアントジャパン株式会社製のＯＰ―９３０、ＯＰ―９３５、ＯＰ−９４０およびＯＰ−１２３０を挙げることができる。 The organic phosphate used in the present invention is preferably a compound shown below. These may be used alone or in combination.

Wherein R1 and R2 are identical or different and are linear or branched C1-C6 alkyl and / or aryl, methyl, ethyl, n-propyl, isopropyl, n-butyl, tert-butyl, n -Pentyl and / or phenyl.
M is Mg, Ca, AL, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, K and / or a protonated nitrogen base, and m is 1 ~ 3.
These organic phosphates have a low solubility in the above-mentioned acrylic materials, and a solubility of 1000 ppm at the maximum.
Specific examples of the organic phosphate represented by the chemical formula (1) include OP-930, OP-935, OP-940 and OP-1230 manufactured by Clariant Japan.

The blend of the acrylic material and the organic phosphate is preferably 60 to 95% by volume of the acrylic material and 40 to 5% by volume of the organic phosphate, 75 to 85% by volume of the acrylic material, and 25 to 15% by volume of the organic phosphate. preferable.
If the acrylic material is less than 60% by volume, sufficient tackiness may not be obtained, and further mixing of the acrylic material and the organic phosphate may be insufficient, which adversely affects the subsequent molding process. There is a possibility of effect. Further, when the acrylic material exceeds 95% by volume, there is a possibility that sufficient adhesive strength cannot be obtained.

  The sufficient adhesive strength here means that the adhesive strength is 50 N / 25 mm or more in the adhesive strength test described later. When it is 50 N / 25 mm or more, it is difficult to peel off, and it can be said that the adhesive force is sufficient for the adherend to break during peeling.

The high-viscosity acrylic resin composition of the present invention is within a range that does not impair the purpose of the present invention, and various commonly used elastomers such as acrylic rubber, urethane rubber, acrylonitrile-butadiene-styrene rubber, inorganic filler, solvent, and weight increase. Additives such as materials, reinforcing materials, plasticizers, thickeners, dyes, pigments, flame retardants, silane coupling agents and surfactants may be used.

The mixing method of each constituent material is not particularly limited, but in the case of a small amount, manual mixing is also possible, but a universal mixer, planetary mixer, hybrid mixer, Henschel mixer, kneader, ball mill, mixing roll A general mixer such as is used.

  As a method for processing the highly adhesive acrylic resin composition of the present invention into a sheet, conventionally known methods such as a coater method, a doctor blade method, an extrusion molding method, an injection molding method, and a press molding method are used. Can be used. In addition, as a base material reinforcement method, when the sheet | seat of this invention has double-sided adhesiveness, a sheet | seat and a base material can be laminated | stacked using well-known lamination methods, such as a normal laminating method and a press method. Although possible, these reinforcing base materials may be used directly as a base material to be used in the coater method or the like. Thus, a highly adhesive sheet can be obtained by photopolymerizing the highly adhesive acrylic resin composition prepared on a base material by direct light irradiation (visible light or ultraviolet light).

  The thickness of the highly adhesive sheet using the highly adhesive acrylic resin composition of the present invention is desirably 250 μm or less, preferably 50 μm to 250 μm. When the thickness is 250 μm or more, the thickness is too large to be used for electronic components that are becoming finer. On the other hand, when the thickness is 50 μm or less, the thickness of the sheet is too thin, and handling at the time of pasting becomes difficult.

  The highly adhesive sheet using the highly adhesive acrylic resin composition of the present invention is useful for electronic parts and electrical devices such as fixing of elements such as fine transistors, which are difficult to screw, and can be reduced in thickness. Space and size can be reduced.

EXAMPLES Hereinafter, although this invention is demonstrated concretely based on an Example, this invention is not limited to these Examples.
(Examples 1 to 11)
Each component described in Examples 1 to 11 in Table 1 was mixed with a self-revolving mixer to prepare a slurry acrylic resin composition. The slurry was sandwiched between two ultraviolet transmissive PET (Polyethylene Telephthalate) liners (hereinafter referred to as “PET liner”), laminated, and then cured by irradiation with ultraviolet rays to obtain a sheet-like molded body.

(Comparative Examples 1-6)
Each component described in Comparative Examples 1 to 6 in Table 2 was mixed with a self-revolving mixer to prepare a slurry acrylic resin composition. The slurry was sandwiched between two ultraviolet transmissive PET (Polyethylene Telephthalate) liners (hereinafter referred to as “PET liner”), laminated, and then cured by irradiation with ultraviolet rays to obtain a sheet-like molded body.

The materials used in Table 1 and Table 2 are shown below.
1) AR53L product name (acrylic rubber, manufactured by Nippon Zeon)
2) 2-EHA trade name (2-ethylhexyl acrylate acrylate, manufactured by Toagosei Co., Ltd.)
3) Acrylic acid 4) HDDA product name (1,6-hexanediol diacrylate, manufactured by Kyoeisha Chemical Co., Ltd.)
5) DMDO product name (1,8-dimercapto-3,6-dioxaoctane, manufactured by Maruzen Chemical Co., Ltd.)
6) Irgacure 500 trade name (benzophenone, hydroxycyclohexyl phenyl ketone mixture, manufactured by Ciba Specialty Chemicals)
7) OP-930 trade name (organophosphate, Clariant)
8) DAM-07 trade name (spherical alumina, manufactured by Denki Kagaku Kogyo Co., Ltd.)
9) Product name AL-45-2 (Alumina Showa Denko)
10) Kunimie-F trade name (manufactured by Montmorillonite Kunimi Kogyo Co., Ltd.)
11) C-303 trade name (aluminum hydroxide manufactured by Sumitomo Chemical Co., Ltd.)

(Comparative Example 7)
Comparative Example 7 shown in Table 3 was tested based on Example 5 described in JP-A-2006-152119.
As the acrylic copolymer, an acrylic copolymer A described in Table 1 of JP-A No. 2006-152119 was prepared and used.
As the epoxy resin, bisphenol A type epoxy resin epicoat 828 (trade name, manufactured by Yuka Shell Epoxy Co., Ltd.) was used.
As a curing agent, phenol resin prio-phen LF2822 (trade name, manufactured by Dainippon Ink & Chemicals, Inc.) was used.
As a curing accelerator, an imidazole-based curing accelerator, Cuazole 2PZ-CN (trade name, manufactured by Shikoku Kasei Kogyo Co., Ltd.) was used.
HCA-HQ (trade name, manufactured by Sanko Co., Ltd.) was used as the polyfunctional phosphorus compound.

  The adhesive strength test method will be described. First, a 15 mm × 100 mm sample is prepared for the adhesive heat radiating sheet to be tested. The PET release liner on both sides is peeled off from this sample, and is attached to an AL test piece (1050 material, 20 mm × 180 mm). After sticking this AL test piece on both sides and pressing with a 2kg roller, it is cured for 30 minutes at room temperature. Thereafter, the adhesive strength was measured by pulling the AL test pieces on both sides with a tensile tester (Tensilon, manufactured by A & D).

From Examples 1 to 11, the acrylic resin composition containing an organic phosphate within the scope of the claims of the present application has a large adhesive force and can be formed into a sheet thickness of 250 μm. In Comparative Example 7, which is a blend of Patent Document 2, the adhesive force is small even when a polyfunctional phosphorus compound is blended.

The acrylic resin composition of the present invention is expected to be applied not only for industrial use but also in all fields where adhesiveness is required.

Claims (5)

A highly adhesive acrylic resin composition comprising 60 to 95% by volume of an acrylic material and 40 to 5% by volume of an organic phosphate, and containing an organic phosphate represented by the following formula (1).

In formula (1), R1 and R2 are the same or different and are linear or branched C1-C6 alkyl and / or aryl.
M is Mg, Ca, AL, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, K and / or a protonated nitrogen base, and m is 1 ~ 3. The acrylic material is (a) an acrylate or methacrylate having an alkyl group having 2 to 12 carbon atoms, an acrylic acid alkyl ester or methacrylic acid alkyl ester having 2 to 12 carbon atoms, (b) a carboxyl group-containing (meth) acrylate, ( c) a polythiol which is a mercaptan compound having two or more mercapto groups having an average molecular weight of 50 to 15000 represented by the following formula (2), formula (3) and formula (4), and (d) a photopolymerization initiator. The highly adhesive acrylic resin composition of Claim 1 contained.

In formulas (2) to (4), Z is an organic residue having m functional groups, m is an integer of 2-6, and p and q are integers of 0-3. A highly adhesive sheet obtained by curing the highly adhesive acrylic resin composition according to claim 1 or 2 by a photopolymerization reaction. An electronic component or an electric device in which the highly adhesive sheet according to claim 3 is incorporated. The manufacturing method of the highly adhesive sheet | seat which makes it harden | cure by photopolymerization reaction after apply | coating the highly adhesive acrylic resin composition of Claim 1 or 2 to a base material.