CN106459724A

CN106459724A - Double-sided adhesive sheet for image display devices, and article

Info

Publication number: CN106459724A
Application number: CN201580030851.3A
Authority: CN
Inventors: 高桥照士; 芥研二; 穗积康弘; 箱根吉浩; 德田清久; 水口贵文; 龟谷英照; 本桥隼
Original assignee: Nippon Kayaku Co Ltd
Current assignee: Nippon Kayaku Co Ltd
Priority date: 2014-06-11
Filing date: 2015-06-11
Publication date: 2017-02-22
Also published as: TW201602278A; WO2015190558A1

Abstract

Provided is a double-sided adhesive sheet for image display devices, said adhesive sheet being readily producible and imparting minimal damage to optical base materials, enabling optical members such as display units having good curability and adhesiveness to be obtained, and enabling optical members (touch panels) having high adhesiveness and adhesive strength with respect to base materials to be obtained. Said adhesive sheet includes: a softener component (G), and a (meth)acrylate (K) comprising at least one compound selected from the group consisting of a urethane (meth)acrylate, a (meth)acrylate having a polyisoprene skeleton, and a (meth)acrylate having a butadiene skeleton.

Description

Device used for image display double-sided adhesive sheet and article

Technical field

The present invention relates to for showing the image that at least two optical element is fitted by ultraviolet hardening adhesive group Compound, employ this image and show and employ this bonding with double-sided adhesive sheet and the manufacture of ultraviolet hardening adhesive compound The method of the optical component of piece.

Background technology

In recent years, in display devices such as liquid crystal display, plasma scope, organic electroluminescent (EL) displays On display screen sticking touch control panel thus allow for screen input display device extensively utilized.This contact panel has There is following structure：It is formed with the glass plate of transparency electrode or resin-made membrane sky is opened small gap and fitted in opposite directions, as required Laminating glass or resinous transparent protection plate in its touch surface.

Have the glass plate being formed with transparency electrode in contact panel or film and glass or resinous transparent guarantor The laminating of the laminating of backplate or contact panel and display body unit uses the technology of double-sided adhesive sheet.For example, at patent literary composition Offer in 1, as the transparent double face bonding sheet by the transparent protection plate of glass or plastics etc. and image display device laminating, it is proposed that Make containing (methyl) acrylic acid derivative, (methyl) acrylic acid derivative polymer and multifunctional (methyl) acrylic acid derivative The transparent double face bonding sheet of mixture solidification.

On the other hand, it is proposed that utilize ultraviolet hardening adhesive compound by transparent protection plate and image display device The technology (patent document 2) of laminating.But, compared with the method using ultraviolet hardening adhesive compound, by using Transparent double face bonding sheet, it is possible to increase production efficiency, therefore has the advantage that compared with ultraviolet hardening adhesive compound.Separately On the one hand, with regard to curability composition, if not carrying out polymerization, then by conventional Conventional ultraviolet curing type adhesive group In the case that compound makes transparent double face bonding sheet, it is difficult to be shaped to sheet, and be difficult to obtain desired solidification physical property.

Therefore, it is desirable to develop a kind of low-k and be able to ensure that the solidification physical property of adhesiveness and low-shrinkage etc Transparent double face bonding sheet.

Prior art literature

Patent document

Patent document 1：Japanese Unexamined Patent Publication 2009-057550 publication

Patent document 2：Japanese Unexamined Patent Publication 2012-046658 publication

Content of the invention

Invent problem to be solved

It is an object of the invention to provide a kind of device used for image display double-sided adhesive sheet, it can obtain to optical element The optical component such as the little and productivity ratio of infringement is good, the display body unit of curability and good adhesion, can obtain to base material The optical component (contact panel etc.) that adhesivity is high, adhesive strength is high.

For solving the means of problem

The present inventor conducts in-depth research to solve above-mentioned problem, and result completes the present invention.That is, the present invention relates to Following (1)～(15).

(1) a kind of device used for image display double-sided adhesive sheet, its contain selected from by carbamate (methyl) acrylate, In the group of (methyl) acrylate with polyisoprene skeleton or (methyl) acrylate composition with butadiene skeletal At least one (methyl) acrylate (K) and emollient ingredients (G).

(2) a kind of device used for image display double-sided adhesive sheet, its by by ultraviolet-curing resin composition at 80 DEG C Drying carried out above and obtain, described ultraviolet-curing resin composition contains selected from by carbamate (methyl) acrylic acid Ester, have polyisoprene skeleton (methyl) acrylate or have butadiene skeletal (methyl) acrylate composition group In at least one (methyl) acrylate (K), emollient ingredients (G).

(3) the device used for image display double-sided adhesive sheet as described in (1) or (2), it is characterised in that above-mentioned (methyl) propylene Acid esters is carbamate (methyl) acrylate, and above-mentioned carbamate (methyl) acrylate is to make following shown chemical combination Thing (A), compound (B), compound (C) and compound (D) reaction obtained from urethanes (E).

Compound (A)：Hydrogenated butadiene polymer polyol compound

Compound (B)：Polyisocyanate compound

Compound (C)：There is (methyl) acrylate compounds of at least more than one hydroxyl

Compound (D)：Diol compound beyond compound (A)

(4) a kind of device used for image display double-sided adhesive sheet, it is characterised in that containing hydrogenated butadiene polymer polyol The iodine number of thing (A) is the urethanes (E) described in (3) of less than 20.

(5) a kind of device used for image display double-sided adhesive sheet, it is characterised in that be containing polyisocyanate compound (B) The urethanes (E) described in (3) or (4) of fat family diisocyanate cpd.

(6) a kind of device used for image display double-sided adhesive sheet, it is characterised in that contain and there is at least more than one hydroxyl (3) that (methyl) acrylate compounds (C) is (methyl) acrylic acid 2-hydroxy methacrylate are to the polyurethane according to any one of (5) Compound (E).

(7) a kind of device used for image display double-sided adhesive sheet, it is characterised in that diolation containing beyond compound (A) Compound (D) is that (3) of PPG are to the urethanes (E) according to any one of (6).

(8) a kind of device used for image display double-sided adhesive sheet, it is characterised in that containing (1) to according to any one of (7) Polymerizable compound (F) beyond urethanes (E) and (E).

(9) the device used for image display double-sided adhesive sheet as according to any one of (1)～(8), it is characterised in that contain Any one or both in hydroxy polymer, terpenic series resin are as emollient ingredients (G).

(10) a kind of solidfied material, it is by the device used for image display double-sided adhesive sheet according to any one of (1)～(9) Irradiate active energy beam and obtain.

(11) a kind of contact panel, it is characterised in that use the device used for image display according to any one of (1)～(9) Double-sided adhesive sheet forms.

(12) a kind of device used for image display double-sided adhesive sheet, it contains selected from by carbamate (methyl) acrylic acid Ester, have polyisoprene skeleton (methyl) acrylate or have butadiene skeletal (methyl) acrylate composition group In at least one (methyl) acrylate (K) or emollient ingredients (G).

(13) a kind of device used for image display double-sided adhesive sheet, it contains selected from by carbamate (methyl) acrylic acid Ester, have polyisoprene skeleton (methyl) acrylate or have butadiene skeletal (methyl) acrylate composition group In at least one (methyl) acrylate (K), emollient ingredients (G) and solvent.

(14) manufacture method of a kind of image display device, utilizes according to any one of (1)～(9), (12)～(13) Optical element is fitted via following operation 1～2 and is obtained image display device by device used for image display double-sided adhesive sheet,

The mould release film stripping in (operation 1) face by the device used for image display double-sided adhesive sheet with mould release film From, and by operation at least one optical element for the device used for image display double-sided adhesive sheet configuration.

The demoulding in (operation 2) remaining face by the device used for image display double-sided adhesive sheet configuring in operation 1 is thin Film is peeled off, and the operation of another optical element of fitting.

(15) manufacture method of a kind of image display device, utilizes according to any one of (1)～(9), (12)～(13) Optical element is fitted via following operation 1～3 and is obtained image display device by device used for image display double-sided adhesive sheet,

(operation 3) is double to the device used for image display in the optical element after laminating through the optical element with light shielding part Face bonding sheet irradiation ultraviolet radiation and make the operation that this solidification nitride layer solidifies.

Invention effect

The excellent flexibility of the cured film of the device used for image display double-sided adhesive sheet of the present invention, moisture-proof, heat resistance, resistance to Photosensitiveness is high, as image display device (particularly contact panel) double-sided adhesive sheet, can effectively prevent at contact panel etc. Image display device produces unfavorable condition.

Detailed description of the invention

The device used for image display double-sided adhesive sheet of the present invention contains selected from by carbamate (methyl) acrylate, tool In the group of (methyl) acrylate having polyisoprene skeleton or (methyl) acrylate composition with butadiene skeletal At least one (methyl) acrylate (K) or emollient ingredients (G).It should be noted that contain above-mentioned (methyl) preferably simultaneously Acrylate (K) and emollient ingredients (G).

The device used for image display double-sided adhesive sheet of the present invention uses selected from by carbamate (methyl) acrylate, tool In the group that (methyl) acrylate having polyisoprene skeleton, (methyl) acrylate with polybutadiene skeleton form Any one is as (methyl) acrylate (K).Preferably contain carbamate (methyl) acrylate or have poly- In (methyl) acrylate of isoprene skeleton at least any one.Here, the preferred high score of (methyl) acrylate compounds The oligomer of son amount or polymer.Here, polymer refers to the HMW body that (methyl) acryloyl group is remained, do not comprise (methyl) acrylic polymer as HMW body obtained from the polymerization of (methyl) acrylic.

It should be noted that in this specification, " (methyl) acrylate " is in methacrylate and acrylate Any one or both.It is also same for " (methyl) acrylic acid " etc..

Carbamate (methyl) propylene can being preferably used in the device used for image display double-sided adhesive sheet of the present invention Acid esters is by having the hydroxy compounds of at least one (methyl) acryloxy and isocyanate compound (as optionally becoming Point, further use polyalcohol) reaction obtained from (methyl) acrylate.

As the concrete example of the hydroxy compounds with at least one (methyl) acryloxy, can enumerate for example：(first Base) acrylic acid 2-hydroxy methacrylate, (methyl) acrylic acid 2-hydroxy propyl ester, (methyl) acrylic acid 2-hydroxybutyl, (methyl) propylene Acid 4-hydroxy methacrylate, cyclohexanedimethanol list (methyl) acrylate, polyethyleneglycol (methyl) acrylate, polypropylene glycol list (methyl) acrylate, pentaerythrite three (methyl) acrylate, 2-hydroxyl-3-phenoxy propyl (methyl) acrylate etc. are each Kind have (methyl) acrylate compounds of hydroxyl and above-mentioned (methyl) acrylate compounds with hydroxyl and ε-oneself The open-loop products etc. of lactone.

As the concrete example of isocyanate compound, can enumerate for example：PPDI, isophthalic two isocyanic acid Ester, paraxylene diisocyanate, m xylene diisocyanate, 2,4 toluene diisocyanate, 2,6-toluene diisocynate The aromatic diisocyanate classes such as ester, 4,4 '-methyl diphenylene diisocyanate, naphthalene diisocyanate；Isophorone two isocyanide Acid esters, hexamethylene diisocyanate, 4,4 '-dicyclohexyl methyl hydride diisocyanate, hydrogenated xylene diisocyanate, fall ice The aliphatic such as piece alkene diisocyanate, LDI or the diisocyanates of alicyclic structure；More than one different The biuret body of cyanate ester monomer or by many isocyanides such as isocyanates body obtained from above-mentioned diisocyanate cpd trimerizing Acid esters；By above-mentioned isocyanate compound and the urethane of above-mentioned polyol compound react obtained from many isocyanides Acid esters etc..

As long as it the known polyalcohol of polyalcohol that can use as optional member, is not particularly limited.As tool Style, can enumerate for example：The polyethers such as polyethylene glycol, polytetramethylene glycol, polytetramethylene glycol, polypropylene glycol, polyethylene glycol are many Unit's alcohols, polyethyleneglycol adipate, poly-BDA 1,4 butanediol adipate, the polyester polyols alcohols such as polycaprolactone, ethylene glycol, third Glycol, cyclohexanedimethanol, polyisoprene glycol, the polybutadienes such as glycol, butanediol, pentanediol, hexylene glycol and neopentyl glycol Enediol, hydrogenated bisphenol A, A Hydrogenated Bisphenol A F, the alcohol containing spirocyclic ring scaffold, Tricyclodecane Dimethanol and pentacyclopentadecane dimethanol etc. Alicyclic alcohol and their alkylene oxide addition product, hydrogenated polyisoprene, branched or the straight chain such as glycol of hydrogenated butadiene polymer The alkylene oxide addition product of the bis-phenols such as shape alkyl diols, bisphenol-A, Bisphenol F and bis-phenol, trimethylolpropane, double three hydroxyl first The alkylene oxide addition product of the polyalcohols such as base propane, pentaerythrite and dipentaerythritol and these polyalcohols and pass through these PEPA etc. obtained from the reaction of the polyacids such as polyalcohol and adipic acid.It is not particularly limited, in order to improve flexibility And compatibility, in the solidfied material of the ultraviolet hardening adhesive compound of the present invention, particularly preferably use PPG Class.

As the weight average molecular weight of above-mentioned carbamate (methyl) acrylate, preferably from about 5000～about the 100000th, Even more preferably about 10000～about 80000.When weight average molecular weight is less than 5000, shrinking and increasing, weight average molecular weight is more than 100000 When, curability is deteriorated.

In the device used for image display double-sided adhesive sheet of the present invention, carbamate (methyl) acrylate can use one Plant or use so that the mixing of arbitrary ratio is two or more.Carbamate (methyl) acrylate is for obtaining the present invention's Part by weight in the ultraviolet hardening adhesive compound of device used for image display double-sided adhesive sheet is usually 20～80 weights Amount %, preferably 30～70 weight %.

Above-mentioned (methyl) acrylate with polyisoprene skeleton has at end or the side chain of polyisoprene molecule There is (methyl) acryloyl group.(methyl) acrylate with polyisoprene skeleton can be with " UC-203 " (Kuraray company System) mode obtain.Have polyisoprene skeleton (methyl) acrylate by the number-average molecular weight of polystyrene conversion It is preferably 1000～50000, even more preferably about 25000～about 45000.

(methyl) acrylate with polyisoprene skeleton is double at the device used for image display for obtaining the present invention Part by weight in the light-cured type transparent adhesive composition of face bonding sheet is usually 20～80 weight %, is preferably 30～70 Weight %.

Above-mentioned (methyl) acrylate with polybutadiene skeleton has (first at end or the side chain of polybutadiene molecule Base) acryloyl group.(methyl) acrylate with polybutadiene skeleton can be with " TEAI-1000 (Cao Da company of Japan System) ", " TE-2000 (Japan Cao Da company system) ", " EMA-3000 (Cao Da company of Japan system) ", " (Osaka is organic for SPBDA-S30 Chemical industrial company's system) " mode obtain.Have polybutadiene skeleton (methyl) acrylate by polystyrene conversion Number-average molecular weight is preferably 1000～30000, even more preferably about 1000～about 10000.

(methyl) acrylate with polybutadiene skeleton is two-sided at the device used for image display for obtaining the present invention Part by weight in the light-cured type transparent adhesive composition of bonding sheet is usually 10～80 weight %, is preferably 20～70 weights Amount %.

The urethanes (E) that can particularly preferably use in the present invention is characterised by, makes hydrogenated butadiene polymer many Diol compound (D) beyond first alcohol (A), compound (A) and polyisocyanate compound (B) first carry out reacting (hereinafter referred to as First reaction), then make the isocyanates of (methyl) acrylate compounds (C) and the residual with at least more than one hydroxyl Base reaction (the hereinafter referred to as second reaction).Obtained by the weight average molecular weight of urethanes (E) be preferably 5000～ 100000th, more preferably 10000～80000, particularly preferably 30000～70000.As R value, preferably 1.1～2.0, more It is preferably 1.1～1.5.

As the hydrogenated butadiene polymer polyalcohol (A) using in first reaction of the present invention, as long as the polybutadiene of routine The hydrogenating reduction product of alkene polyalcohol can be to use, and particularly in optical applications, preferably remains the few poly-fourth of hydrogenation of double bond Diene polyol, as iodine number, particularly preferably less than 20.

Hydroxyl value is preferably less than 400, more preferably less than 300.Lower limit is not particularly limited, and for example, more than 0.1. In addition, with regard to the molecular weight of (A), the hydrogenated butadiene polymer polyalcohol being capable of the conventional molecular weight distribution obtaining all can use, Particularly in the case of obtaining the balance of flexibility and curability, particularly preferred weight average molecular weight is 500～3000.The opposing party Face, with regard to the molecular weight of (A), the hydrogenated butadiene polymer polyalcohol being capable of the conventional molecular weight distribution obtaining all can use, special Not being in the case of obtaining the balance of flexibility and curability, preferred number average molecular weight is 500～5000, is particularly preferably 500～3000.

As commercially available hydrogenated butadiene polymer polyalcohol (A), can enumerate for example：Tso Tat Co., Ltd., Japan's system：GI- 1000th, GI-2000, GI-3000, CRAY VALLEY KRASOL HLBP-H the 1000th, HLBP-H2000, HLBP-H 3000 Deng.It should be noted that the hydrogenated butadiene polymer polyalcohol containing alkali salt can be preferably used.

As the concrete example of the diol compound (D) beyond the compound (A) using in first reaction of the present invention, permissible Enumerate for example：The polyether polyols alcohols such as polyethylene glycol, polytetramethylene glycol, polytetramethylene glycol, polypropylene glycol, polyethylene glycol, poly- Polyester polyols alcohols, ethylene glycol, propane diols, the fourths two such as glycol adipate, poly-BDA 1,4 butanediol adipate, polycaprolactone Glycol, cyclohexanedimethanol, polyisoprene glycol, polybutadiene diol, the hydrogen such as alcohol, pentanediol, hexylene glycol and neopentyl glycol Change bisphenol-A, A Hydrogenated Bisphenol A F, containing alicyclic alcohol such as the alcohol of spirocyclic ring scaffold, Tricyclodecane Dimethanol and pentacyclopentadecane dimethanol and Their alkylene oxide addition product, hydrogenated polyisoprene, branched or the straight-chain chain alkyl such as glycol of hydrogenated butadiene polymer The alkylene oxide addition product of the bis-phenols such as glycol, bisphenol-A, Bisphenol F and bis-phenol, trimethylolpropane, double trimethylolpropane, season penta The alkylene oxide addition product of the polyalcohol such as tetrol and dipentaerythritol and these polyalcohols and by these polyalcohols with oneself two PEPA etc. obtained from the reaction of the polyacids such as acid.It is not particularly limited, in order to improve flexibility and compatibility, at this In the solidfied material of the ultraviolet hardening adhesive compound of invention, particularly preferably use polyether polyols alcohols.

In addition, with regard to the molecular weight of the diol compound (D) beyond compound (A), can divide the conventional molecular weight obtaining The diol compound of cloth all can use, and particularly in the case of obtaining the balance of flexibility and curability, preferably number is divided equally Son amount is 50～6000, particularly preferably 100～4000.

Here, in obtained urethanes (E), be combined with the glycol beyond compound (A) dispersedly The structure of compound (D) (PPG such as particularly preferred polyethylene glycol), from combining polyethylene glycol backbone and hydrogenation equably From the viewpoint of the compatibility of polybutadiene skeleton, thus raising and monomer, the number-average molecular weight of polyethylene glycol is more preferably Less than 2000, particularly preferably less than 500.

In addition, in urethanes (E), diolation beyond hydrogenated butadiene polymer polyalcohol (A) with compound (A) From the point of view of the total mole number of compound (D) (PPG such as particularly preferred polyethylene glycol), preferably incorporate the change of 5～10 moles of % Diol compound (D) (PPG such as particularly preferred polyethylene glycol) beyond compound (A).

Hydroxyl value is preferably less than 400, more preferably less than 300.Lower limit is not particularly limited, and for example, more than 5.

Polyethylene glycol with regard to the example of the polyether polyols alcohols can being preferably used in the first reaction as the present invention Concrete example, the polyethylene glycol of conventional commercial all can use, for example can use Japan Oil Co PEG#200T, PEG#200、PEG#300、PEG#400、PEG#600、PEG#1000、PEG#1500、PEG#1540、PEG#200、PEG#4000、 PEG#4000P, PEG#6000, PEG#6000P, PEG#11000, PEG#20000 etc. or the polyurethane of their moisture control product Level product etc..In order to suppress the thickening causing due to the increase of molecular weight, as amount of moisture, preferably less than 2%, excellent especially Elect less than 1% as.

Here, in the present application, by the diol compound beyond hydrogenated butadiene polymer polyalcohol (A) and compound (A) (D) when PPGs such as () particularly preferred polyethylene glycol is used for reacting, beyond hydrogenated butadiene polymer (A) and compound (A) The usage rate of diol compound (D) (PPG such as particularly preferred polyethylene glycol) is not particularly limited, (A) composition:(D) Composition is preferably 9.999 with molar ratio computing:0.001～1:9th, more preferably 9.999:0.001～3:7th, particularly preferably 9.999:0.001～4:6.

In addition, with regard to the number-average molecular weight of the hydrogenated butadiene polymer polyalcohol (A) using in the present invention, preferred compositions uses Number-average molecular weight be more than used compound (A) beyond diol compound (the D) (polyether polyols such as particularly preferred polyethylene glycol Alcohol) hydrogenated butadiene polymer polyalcohol, more preferably hydrogenated butadiene polymer polyalcohol (A) have beyond compound (A) diolation The number-average molecular weight of the number-average molecular weight+500 of compound (D) (PPG such as particularly preferred polyethylene glycol), particularly preferred hydrogen (polyethers such as particularly preferred polyethylene glycol is many to change the diol compound (D) beyond polybutadiene polyol (A) has compound (A) Unit's alcohol) the number-average molecular weight of number-average molecular weight+1000.

The polyisocyanate compound (B) using in first reaction is to contain two or more NCO in a molecule Compound, can enumerate for example：Fat family diisocyanate cpd, fragrance family diisocyanate cpd, they Tripolymer etc..Fat family diisocyanate cpd said here refers to, NCO is bonded with chain carbon atoms Obtained from diisocyanate cpd and NCO and two isocyanic acids obtained from the carbon atom bonding of cyclic saturated hydrocarbon Ester compounds, fragrance family diisocyanate cpd refers to, obtained from the carbon atom bonding of NCO and aromatic rings Isocyanate compound.

As fat family diisocyanate cpd, can enumerate for example：1,6-hexamethylene diisocyanate, different Buddhist That ketone diisocyanate, HTDI, hydrogenation of benzene dimethylene diisocyanate, hydrogenated diphenyl methane two are different Cyanate, hexamethylene-1,3-diisocyanate, hexamethylene-1,4-diisocyanate, dicyclohexyl methyl hydride-4,4 '-two isocyanic acid Ester, a tetramethylxylene diisocyanate, to tetramethylxylene diisocyanate, 1,4-tetramethylene diisocyanate, 1,12-ten dimethylene diisocyanate, 2,2,4-trimethyl-cyclohexane diisocyanate, 2,4,4-trimethyl-cyclohexane two are different Cyanate, 2,2,4-trimethyl hexamethylene diisocyanate, 2,4,4-trimethyl hexamethylene diisocyanate, lysine two Isocyanates, norbornene alkyl diisocyanate etc..

As fragrance family diisocyanate cpd, can enumerate for example：Toluene di-isocyanate(TDI), phenylenedimethylidyne two Isocyanates, methyl diphenylene diisocyanate, 1,5-naphthalene diisocyanate, dimethyl diphenyl diisocyanate, isophthalic two are different The diisocyanate monomer classes etc. such as cyanate, PPDI, m-benzene diisocyanate.

Wherein, in order to make the moisture-proof of film, heat resistance good, preferred fat family diisocyanate cpd and this fat The tripolymer of fat family diisocyanate cpd.As the tripolymer of fat family diisocyanate cpd, can enumerate For example：The isocyanurate type polyisocyanates etc. of above-mentioned fat family isocyanates system, specifically, can enumerate：Six is sub- Methyl diisocyanate, IPDI etc..They can each be used alone or make as a mixture With.

In the present invention, equivalent relation (B/ (A+D) ＞ 1 to make NCO remain after reacting for first reaction:[NCO]/ [OH] mol ratio) feed intake.When rate of charge increases, unreacted polyisocyanate compound (B) more exists, sometimes Bring impact to the flexibility of ultraviolet hardening adhesive compound.During in addition, rate of charge reduces, molecular weight increases, sometimes Impact can be brought to the curability of ultraviolet hardening adhesive compound.Specifically, preferably with respect to polyisocyanic acid esterification The NCO base 1.0mol of compound (B), the OH base making alcoholic compound (A+D) is 0.1～0.9mol.

In the present invention, the first reaction can be carried out under solvent-free, but in order to improve the viscosity of product, improve workability, Preferably do not have in the solvent of alcoholic extract hydroxyl group or polymerizable compound described later (F) is being carried out.As the concrete example of solvent, permissible Aromatic hydrocarbon at the ketones such as acetone, MEK, methyl iso-butyl ketone (MIBK), cyclohexanone, benzene,toluene,xylene, durol etc., Glycol dimethyl ether, ethylene glycol diethyl ether, dimethyl ether, dipropylene glycol diethyl ether, TRIGLYME, three second two The glycol ethers such as diethylene glycol diethyl ether, ethyl acetate, butyl acetate, methylcellosolve acetate, ethyl cellosolve acetate, butyl are molten Fine agent acetic acid esters, carbitol acetate, propylene glycol methyl ether acetate, propylene glycol monoethyl ether acetate, dipropylene glycol monomethyl ether The cyclic esters such as esters, gamma-butyrolacton such as acetic acid esters, dialkyl glutarate, dialkyl succinate, hexanedioic acid dialkyl ester Single or the mixed organic solvents of the petroleum solvents etc. such as class, petroleum ether, naphtha, hydrogenated naphtha, solvent naphtha enters OK.

Reaction temperature is usually 30～150 DEG C, is preferably the scope of 50～100 DEG C.The terminal of reaction passes through isocyanates The minimizing of amount confirms.In addition, for the reaction time shortening them, catalyst can be added.As this catalyst, can make By any one in base catalyst and acidic catalyst.As the example of base catalyst, can enumerate：Pyridine, pyrroles, three The phosphine classes such as the amines such as ethamine, diethylamine, dibutyl amine, ammonia, tributylphosphine, triphenylphosphine.In addition, as the example of acidic catalyst Son, can enumerate：Copper naphthenate, cobalt naphthenate, zinc naphthenate, aluminium butoxide, tetraisopropoxy titanium, tetrabutyl zirconate, chlorine Change the lewis acid catalysts such as aluminium, tin octoate, trilauryl tin octylate, dibutyl tin laurate, octyltin diacetate.These The addition of catalyst leads to relative to total weight parts 100 weight portion of diol compound (A+D) and polyisocyanate compound (B) It is often 0.1～1 weight portion.

The urethanes (E) of the present invention can be by making have at least more than one hydroxyl after the first reaction (methyl) acrylate compounds (C) continues to react (the second reaction) with the NCO of residual and obtain.

(methyl) acrylate compounds (C) with at least more than one hydroxyl using in second reaction is at one point It is at least respectively provided with a hydroxyl and the compound of (methyl) acrylate in Zi, specifically, can enumerate：(methyl) Acrylic acid 2-hydroxy methacrylate, propane diols list (methyl) acrylate, butanediol list (methyl) acrylate, pentanediol list (methyl) Acrylate, hexylene glycol list (methyl) acrylate, diethylene glycol list (methyl) acrylate, DPG list (methyl) propylene Acid esters, triethylene glycol list (methyl) acrylate, tripropylene glycol list (methyl) acrylate, TEG list (methyl) acrylic acid Ester, polyethyleneglycol (methyl) acrylate, polypropylene glycol list (methyl) acrylate, neopentyl glycol single (methyl) acrylic acid The binary such as ester, ethoxylation neopentyl glycol single (methyl) acrylate, 3-hydroxypivalic acid neopentyl glycol single (methyl) acrylate List (methyl) acrylate of alcohol；

Trimethylolpropane list (methyl) acrylate, ethoxylated trimethylolpropane list (methyl) acrylate, third Epoxide trimethylolpropane list (methyl) acrylate, three (2-hydroxyethyl) isocyanuric acid ester list (methyl) acrylate, Glycerine list (methyl) acrylate, trimethylolpropane two (methyl) acrylate, ethoxylated trimethylolpropane two (first Base) acrylate, propoxylation trimethylolpropane two (methyl) acrylate, three (2-hydroxyethyl) isocyanuric acid ester two The mono acrylic ester of the trihydroxylic alcohols such as (methyl) acrylate, glycerine two (methyl) acrylate and two (methyl) acrylate, general Single (methyl) acrylate and two (methyl) propylene obtained from the part alkyl of the hydroxyl of these alcohol, 6-caprolactone are modified Acid esters；

Pentaerythrite list (methyl) acrylate, dipentaerythritol list (methyl) acrylate, double trimethylolpropane list (methyl) acrylate, pentaerythrite two (methyl) acrylate, dipentaerythritol two (methyl) acrylate, double trihydroxy methyl Propane two (methyl) acrylate, pentaerythrite three (methyl) acrylate, dipentaerythritol three (methyl) acrylate, double three Hydroxymethyl-propane three (methyl) acrylate, dipentaerythritol four (methyl) acrylate, double trimethylolpropane four (methyl) More than the quaternarys such as acrylate, dipentaerythritol six (methyl) acrylate, double trimethylolpropane six (methyl) acrylate Alcohol multifunctional (methyl) acrylate and have hydroxyl compound, by the part alkyl of the hydroxyl of these alcohol, ε- Multifunctional (methyl) acrylate etc. with hydroxyl of caprolactone modification.

From the aspect of curability and excellent flexibility, above-mentioned (methyl) acrylic acid with at least more than one hydroxyl In ester compounds (C), particularly preferred (methyl) acrylic acid 2-hydroxy methacrylate.From the easy aspect of workability, in the present invention In, polymerizable compound described later (F) can be added when reaction.

The equivalent relation that the NCO of the intermediate to obtain after the first reaction for second reaction of the present invention disappears enters Row feeds intake.Specifically, the NCO base 1.0mol preferably with respect to the intermediate obtaining after the first reaction, makes have at least one The OH base of (methyl) acrylate compounds (C) of above hydroxyl is 1.0～3.0mol, more preferably 1.0～2.0mol.

Second reaction also can be carried out under solvent-free, in order to improve the viscosity of product, improve workability, preferably above-mentioned Solvent in and/or polymerizable compound described later (F) in carry out.In addition, reaction temperature is usually 30～150 DEG C, is preferably The scope of 50～100 DEG C.The terminal of reaction is confirmed by the minimizing of amount of isocyanate.In order to shorten their reaction time, Above-mentioned catalyst can be added.

As the acrylate compounds of raw material has generally been added with the polymerization inhibitors such as 4-metoxyphenol, but can be Again add polymerization inhibitor during reaction.As the example of such polymerization inhibitor, can enumerate：Quinhydrones, 4-metoxyphenol, 2,4-bis- Methyl-6-tert-butylphenol, 2,6-di-t-butyl-4-cresols, 3-hydroxythiophenol, 1,4-benzoquinone, 2,5-dihydroxy 1,4-benzoquinone, fen Thiazine etc..Its consumption is 0.01～1 weight % relative to reacting material mixture.

The device used for image display double-sided adhesive sheet of the present invention uses emollient ingredients (G).Soft as can use The concrete example of agent composition, can enumerate：Polymer or oligomer, phthalate, phosphoric acid ester, diol-lipid, lemon Lemon esters of gallic acid, aliphatic dibasic acid ester, fatty acid ester, epoxy plasticizer, castor-oil plant oils, terpenic series hydrogenated resin, terpene Alkene system resin, the compound etc. with structure represented by following formula (1).

[changing 1]

(in formula, n represents the integer of 0～40, and m represents the integer of 10～50.R¹And R²Each can be the same or different. R¹And R²For the alkyl of carbon number 1～18, the thiazolinyl of carbon number 1～18, the alkynyl of carbon number 1～18, carbon number 5 The aryl of～18)

As the example of above-mentioned oligomer, polymer, can illustrate：Have polyisoprene skeleton, polybutadiene skeleton, The oligomer of polybutene skeleton or dimethylbenzene skeleton or polymer and carboxylate thereof, be according to circumstances preferably used and have polybutadiene The polymer of skeleton or oligomer and carboxylate thereof.As the polymer with polybutadiene skeleton or oligomer and carboxylate thereof Concrete example, can enumerate：Dienite, epoxide modified polybutadiene, butadiene-styrene random copolymer, Malaysia Acid modified polybutadiene and the liquid polybutadiene of terminal hydroxyl modification.In addition, these emollient ingredients also can be used together two kinds Above mentioned component uses.

As device used for image display double-sided adhesive sheet, retention tab shape while guaranteeing that adhesiveness, lower shrinkage are forthright Aspect set out, emollient ingredients for curable type is preferably used under normal temperature (25 DEG C).Fusing point is more preferably used to be more than 80 DEG C Curable type emollient ingredients, the curable type emollient ingredients particularly preferably using fusing point to be more than 100 DEG C.As concrete example, Ke Yilie Lift aromatic modified terpene resin etc..Here, two or more curable type emollient ingredients also can be used in mixed way.

This emollient ingredients is in the ultraviolet hardening adhesive group for obtaining device used for image display double-sided adhesive sheet Part by weight in compound is usually 10～80 weight %, is preferably 10～70 weight %.

As the ultraviolet-curing resin composition of the device used for image display double-sided adhesive sheet for obtaining the present invention, Generally contain organic solvent together with above-mentioned (methyl) acrylate (K), emollient ingredients (G).

It as the organic solvent that can use, is not particularly limited, can enumerate for example：The alcohol such as methyl alcohol, ethanol, isopropanol Class；Dimethyl sulfone, dimethyl sulfoxide (DMSO), oxolane, dioxane, toluene, dimethylbenzene etc..

The device used for image display double-sided adhesive sheet of the present invention can be containing (methyl) acrylate monomer as optional one-tenth Point.

As above-mentioned (methyl) acrylate monomer, it may be preferred to use and there is (methyl) acryloyl group in the molecule (methyl) acrylate.

Here, (methyl) acrylate monomer refers to except above-mentioned carbamate (methyl) acrylate, following epoxy (methyl) acrylate beyond (methyl) acrylate and above-mentioned (methyl) acrylate with polyisoprene skeleton.

As (methyl) acrylate in the molecule with (methyl) acryloyl group, specifically, can enumerate： (methyl) Isooctyl acrylate monomer, (methyl) isoamyl acrylate, (methyl) lauryl acrylate, (methyl) isodecyl acrylate, (methyl) stearyl acrylate ester, (methyl) aliphatic acrylate, the different myristyl ester of (methyl) acrylic acid, (methyl) propylene (methyl) acrylic acid carbon number 5～20 Arrcostabs such as acid tridecyl ester are (from the viewpoint of volatility and dissolubility, preferably (methyl) acrylic acid carbon number 10～20 Arrcostab, (methyl) acrylic acid carbon number 10～20 alkane more preferably with side chain Base ester), (methyl) benzyl acrylate, (methyl) tetrahydrofurfuryl acrylate, acryloyl morpholine, (methyl) phenylethyl shrink Glyceride, tristane (methyl) acrylate, acrylic acid dihydro dicyclopentadiene base ester, (methyl) acrylic acid dihydro dimerization Cyclopentadienyl group epoxide ethyl ester, (methyl) isobornyl acrylate, (methyl) acrylic acid tetrahydrochysene dicyclopentadiene base ester, propylene Acid 1-adamantane esters, acrylic acid 2-methyl-2-adamantane esters, acrylic acid 2-ethyl-2-adamantane esters, methacrylic acid 1-adamantane esters, (methyl) nonylphenol acrylate phenyl ester of polypropylene oxide, (methyl) acrylic acid dicyclopentadiene base Epoxide ethyl ester etc. has (methyl) acrylate of cyclic skeleton, (methyl) acrylic acid 2-hydroxy propyl ester, (methyl) acrylic acid 4- Hydroxybutyl etc. have (methyl) acrylic acid carbon number 1～5 Arrcostab of hydroxyl, ethoxydiglycol (methyl) acrylic acid Ester, polypropylene glycol (methyl) acrylate, the PAG such as (methyl) nonylphenol acrylate phenyl ester of polypropylene oxide (methyl) acrylate, ethylene-oxide-modified phenoxylation phosphoric acid (methyl) acrylate, ethylene-oxide-modified butoxy Change phosphoric acid (methyl) acrylate and ethylene-oxide-modified octyloxy phosphoric acid (methyl) acrylate etc..Wherein, preferred (first Base) acrylic acid carbon number 10～20 Arrcostab, 2-ethylhexyl carbitol acrylate, acryloyl morpholine, (methyl) third Olefin(e) acid 4-hydroxybutyl, (methyl) tetrahydrofurfuryl acrylate, the different stearyl ester of (methyl) acrylic acid, (methyl) acrylic acid dihydro dimerization Cyclopentadienyl group epoxide ethyl ester, (methyl) nonylphenol acrylate phenyl ester of polypropylene oxide, from the viewpoint of the flexibility of resin Set out, particularly preferred (methyl) acrylic acid carbon number 10～20 Arrcostab, (methyl) acrylic acid dihydro dicyclopentadiene base Epoxide ethyl ester, (methyl) nonylphenol acrylate phenyl ester of polypropylene oxide, (methyl) tetrahydrofurfuryl acrylate.

On the other hand, from the viewpoint of improving the adhesiveness to glass, preferably there is (methyl) acrylic acid carbon of hydroxyl Atomicity 1～5 Arrcostab, acryloyl morpholine, particularly preferred acryloyl morpholine.

Here, (methyl) acrylate monomer represents except carbamate (methyl) acrylate, epoxy (methyl) third Olefin(e) acid ester, there is (methyl) acrylate beyond (methyl) acrylate of polyisoprene skeleton.

In the present compositions, can contain in the range of not damaging the characteristic of the present invention there is one (methyl) (methyl) acrylate beyond (methyl) acrylate of acryloyl group.Can enumerate for example：Tricyclodecane Dimethanol two (first Base) acrylate, dioxane glycol two (methyl) acrylate, polypropylene glycol two (methyl) acrylate, polybutadiene Alcohol two (methyl) acrylate, alkylene oxide modified bisphenol A type two (methyl) acrylate, caprolactone modification 3-hydroxypivalic acid new penta Glycol two (methyl) acrylate and ethylene-oxide-modified di(2-ethylhexyl)phosphate (methyl) acrylate, trimethylolpropane tris (methyl) third Trihydroxy methyl C2～C10 alkane three (methyl) acrylate, three hydroxyls such as olefin(e) acid ester, trihydroxy methyl octane three (methyl) acrylate Methylpropane polyethoxy three (methyl) acrylate, the poly-propoxyl group of trimethylolpropane three (methyl) acrylate, three hydroxyl first Trihydroxy methyl C2～poly-the alkoxyl of C10 alkane three (methyl) third such as the poly-propoxyl group of base propane polyethoxy three (methyl) acrylate Olefin(e) acid ester, three [(methyl) acryloyl-oxyethyl] isocyanuric acid ester, pentaerythrite three (methyl) acrylate, oxirane change The property epoxy such as trimethylolpropane tris (methyl) acrylate, epoxy pronane modification trimethylolpropane tris (methyl) acrylate Modified trimethylolpropane tris (methyl) acrylate of alkane, pentaerythrite polyethoxy four (methyl) acrylate, pentaerythrite Poly-propoxyl group four (methyl) acrylate, pentaerythrite four (methyl) acrylate, double trimethylolpropane four (methyl) propylene Acid esters, dipentaerythritol four (methyl) acrylate, dipentaerythritol five (methyl) acrylate, dipentaerythritol six (methyl) Acrylate etc..

In the present invention, and with in the case of, in order to suppress cure shrinkage, simple function or dual functional is preferably used (methyl) acrylate.

In above-mentioned ultraviolet hardening adhesive compound, these (methyl) acrylate monomer compositions can use one Plant or use so that the mixing of arbitrary ratio is two or more.(methyl) acrylate monomer is at the light-cured type transparent adhesive tape of the present invention Part by weight in adhesive composition is usually 5～70 weight %, is preferably 10～50 weight %.During less than 5 weight %, solidification Property be deteriorated, more than 70 weight % when, shrink increase.

Contain (i) carbamate (methyl) acrylate or have poly-in this ultraviolet hardening adhesive compound At least any one and (ii) (methyl) both acrylate monomers in (methyl) acrylate of isoprene skeleton In mode, (i) and (ii) total content of both relative to the total amount of this resin combination be usually 25～90 weight %, 40～ 90 weight %, more preferably 40～80 weight %.

In the device used for image display double-sided adhesive sheet of the present invention, can make in the range of not damaging the characteristic of the present invention With epoxy (methyl) acrylate.Epoxy (methyl) acrylate has hardness, the solidification improving curability and raising solidfied material The function of speed.Epoxy (methyl) acrylate is the epoxy resin making the epoxy radicals more than containing mono-functional and (methyl) third The general name of (methyl) acrylate obtained from olefine acid reaction.With the epoxy radicals 1 relative to diglycidyl ether type epoxy compound The ratio reaction that equivalent makes (methyl) acrylic acid be 0.9～1.5 mole, more preferably 0.95～1.1 mole.Reaction temperature is preferred Be 80 DEG C～120 DEG C, the reaction time be about 10 hours～about 35 hours.In order to promote reaction, be preferably used such as triphenylphosphine, The catalyst such as TAP, triethanolamine, etamon chloride.In addition, in Fan Ying, in order to prevent polymerization, it is possible to use for example to first Epoxide phenol, methylnaphthohydroquinone etc. are as polymerization inhibitor.Tool as the epoxy resin of the raw material becoming epoxy (methyl) acrylate Style, can enumerate：The benzene such as quinhydrones diglycidyl ether, diglycidyl ether catechol, resorcinolformaldehyde resin Base diglycidyl ether；Double (the 4-hydroxyl of bisphenol-A-type epoxy resin, bisphenol-Ftype epoxy resin, bis-phenol-S type epoxy resin, 2,2- Base phenyl) the biphenol type epoxy compound such as epoxide of-1,1,1,3,3,3-HFC-236fa；A Hydrogenated Bisphenol A-A type asphalt mixtures modified by epoxy resin Fat, A Hydrogenated Bisphenol A-F type epoxy resin, A Hydrogenated Bisphenol A-S type epoxy resin, double (the 4-hydroxy phenyl)-1,1,1,3 of hydrogenation 2,2-, The A Hydrogenated Bisphenol A type epoxides such as the epoxide of 3,3-HFC-236fa；Brominated bisphenol-A type epoxy resin, brominated bisphenol- The halogenated bisphenols type epoxides such as F type epoxy resin；The ester ring types two such as cyclohexanedimethanodiglycidyl diglycidyl ether compound contract Water glycerin ether compound；1,6 hexanediol diglycidylether, 1,4-butanediol diglycidyl ether, diethylene glycol diglycidyl are sweet The aliphatic diglycidylether compounds such as oil ether；The polysulfide type 2-glycidyl etherificates such as polysulfide diglycidyl ether Compound；Phenol novolak type epoxy resin, cresol novolak type epoxy resin, trihydroxy benzene methylmethane type epoxy resin, Dicyclopentadiene phenol type epoxy resin, united phenol-type epoxy resin, bisphenol-A phenolic resin varnish type epoxy resin, skeleton containing naphthalene Epoxy resin, hetero ring type epoxy resin etc..

As epoxy (methyl) acrylate can being preferably used in the present invention, for by bisphenol A type epoxy compound Bisphenol type epoxy (methyl) acrylate obtaining.As the weight average molecular weight of epoxy (methyl) acrylate, preferably 500 ～10000.

Part by weight in the ultraviolet hardening adhesive compound of the present invention for epoxy (methyl) acrylate is usual It is 1～80 weight %, be preferably 5～30 weight %.

As in the ultraviolet curable resin composition for the device used for image display double-sided adhesive sheet obtaining the present invention The content ratio of (methyl) acrylate, be 25～90 weights relative to the total amount of ultraviolet hardening adhesive compound Amount %, preferably 40～90 weight %, more preferably 40～80 weight %.

In above-mentioned ultraviolet hardening adhesive compound, preferably comprise selected from by above-mentioned carbamate (methyl) third The group of olefin(e) acid ester, above-mentioned (methyl) acrylate with polyisoprene skeleton and above-mentioned (methyl) acrylate monomer composition In at least one as (methyl) acrylate, it is further preferred that the containing of above-mentioned carbamate (methyl) acrylate Ratio is 20～80 weight %, is preferably 30～70 weight %, above-mentioned (methyl) acrylate with polyisoprene skeleton Content ratio be 20～80 weight %, be preferably 30～70 weight %, the content ratio of above-mentioned (methyl) acrylate monomer It is 5～70 weight %, be preferably 10～50 weight %.

In above-mentioned ultraviolet hardening adhesive compound, it is further preferred that, containing above-mentioned carbamate (first Base) acrylate or there is (methyl) acrylate of polyisoprene skeleton as (methyl) acrylate, its content ratio It is 20～80 weight %, is preferably 30～70 weight %, and contain (methyl) acrylate monomer, its content ratio is 5～ 70 weight %, preferably 10～50 weight %.

In addition, contain dimaleoyl imino as can be used together in the device used for image display double-sided adhesive sheet of the present invention Compound, can enumerate for example：N-normal-butyl maleimide, N-hexyl maleimide, 2-maleimidoethyl-ethyl Carbonic ester, 2-maleimidoethyl-propyl carbonate, N-ethyl-(2-maleimidoethyl) carbamate etc. Monofunctional aliphatic's maleimide；The ester ring type simple function maleimides such as N-N-cyclohexylmaleimide；N, N-six Di-2-ethylhexylphosphine oxide maleimide, polypropylene glycol-bis-(3-dimaleoyl imino propyl group) ether, double (2-maleimidoethyl) carbon The aliphatic bismaleimide amines such as acid esters；Double (the N-of 1,4-dimaleimide butylcyclohexane, isophorone double carbamate Ethyl maleimide) etc. ester ring type BMI；Maleimide guanidine-acetic acid and polytetramethylene glycol are carried out being esterified and obtains The maleimide compound that arrives, by the esterification of maleimidocaproic acid and the tetraoxane addition product of pentaerythrite Obtained from carboxyl maleimide derivatives and various (polynary) alcohol are esterified by the maleimide compounds obtaining etc. (gathering) ester (gathering) maleimide compound etc., but it is not limited to these.As content ratio, gluing relative to ultraviolet hardening The total amount of agent composition is 25～90 weight %, is preferably 40～90 weight %, is more preferably 40～80 weight %.

As (methyl) acrylamide compound that can be used together in the device used for image display double-sided adhesive sheet of the present invention, Can enumerate for example：Mono-functional's (methyl) acrylic amides such as acryloyl morpholine, N-isopropyl (methyl) acrylamide；Sub- Multifunctional (methyl) acrylic amides etc. such as double (methyl) acrylamides of methyl.As content ratio, relative to being used for obtaining figure As the total amount of the ultraviolet hardening adhesive compound of display device double-sided adhesive sheet is 25～90 weight %, is preferably 40 ～90 weight %, more preferably 40～80 weight %.

As Photoepolymerizationinitiater initiater contained in the device used for image display double-sided adhesive sheet of the present invention, do not limit especially Fixed, acylphosphine oxide compound is preferably used.Can enumerate for example：2,4,6-trimethyl benzoyl diphenyl base phosphine oxide, 2, 4,6-trimethylbenzoyl phenyl ethyoxyl phosphine oxide, double (2,4,6-trimethylbenzoyl)-phenyl phosphine oxide, double (2, 6-Dimethoxybenzoyl)-2,4,4-trimethylpentylphosphine oxide.Ultraviolet curing resin after to coating irradiates purple Outside line and obtaining has and is present in the cured portion of optical element side and is present in the solid of the side contrary with optical element side When changing the solidification nitride layer of part, from the viewpoint of the transparency of the formation easiness of uncured portion and resin cured matter layer, Particularly preferred 2,4,6-trimethyl benzoyl diphenyl base phosphine oxide.

As other Photoepolymerizationinitiater initiaters, can enumerate：1-hydroxycyclohexyl phenyl ketone (Irgacure 184；BASF System), 2-hydroxy-2-methyl-[4-(1-methyl ethylene) phenyl] propyl alcohol oligomer (ESACURE ONE；Ning Baidi company system), 1-[4-(2-hydroxyl-oxethyl)-phenyl]-2-hydroxy-2-methyl-1-propane-1-ketone (Irgacure 2959；BASF system), 2- Hydroxyl-1-{4-[4-(2-hydroxy-2-methyl propiono)-benzyl]-phenyl }-2-methylpropane-1-ketone (Irgacure 127； BASF system), 2,2-dimethoxy-2-phenyl acetophenone (Irgacure 651；BASF system), 2-hydroxy-2-methyl-1-phenyl third Alkane-1-ketone (Darocur 1173；BASF system), 2-methyl isophthalic acid-[4-(methyl mercapto) phenyl]-2-morpholinopropane-1-ketone (Irgacure 907；BASF system), oxo phenylacetic acid 2-[2-oxo-2-phenylacetyl epoxide ethyoxyl] ethyl ester and oxo benzene second Mixture (the Irgacure 754 of acid 2-[2-hydroxyl-oxethyl] ethyl ester；BASF system), 2-benzyl-2-dimethylamino-1-(4- Morpholino phenyl)-butane-1-ketone, CTX, 2,4-dimethyl thioxanthone, 2,4-diisopropylthioxanthone, isopropyl thiophene Ton ketone, alpha-alcohol ketone based polymer etc..

Wherein, in the device used for image display double-sided adhesive sheet of the present invention, also can when applying heat to obtain piece The aspect of suppression volatilization is set out, and alpha-alcohol ketone based polymer (ESACURE company system, KIP150) is preferably used.

In the device used for image display double-sided adhesive sheet of the present invention, these Photoepolymerizationinitiater initiaters can use one or to appoint The ratio mixing of meaning is two or more to be used.Photoepolymerizationinitiater initiater is at the device used for image display double-sided adhesive for obtaining the present invention Close the part by weight in the photocurable resin composition of piece to be usually 0.2～5 weight %, be preferably 0.3～3 weight %.Many When 5 weight %, the consolidating of uncured portion obtaining having cured portion and be present in the side contrary with optical element side During compound layer, it is possible to the transparency variation of uncured portion or resin cured matter layer cannot be formed.

Further, it is possible to the tertiary amine such as triethanolamine, methyl diethanolamine, N, N-dimethyl amino benzoate, N, The accelerator etc. such as benzoic acid derivative such as N-dimethylaminobenzoic acid isopentyl ester are applied in combination.Interpolation as these accelerator Amount, is added as needed on relative to the amount that Photoepolymerizationinitiater initiater is below 100 weight %.

In addition to above-mentioned (methyl) acrylate and above-mentioned Photoepolymerizationinitiater initiater, the device used for image display of the present invention is double Face bonding sheet can cause auxiliary agent, additive described later etc. as other compositions containing following photopolymerization.These other become split-phase Content ratio for the total amount of the ultraviolet hardening adhesive compound of the present invention is to deduct above-mentioned (first from this total amount Base) acrylate and above-mentioned Photoepolymerizationinitiater initiater total amount after surplus.Specifically, in terms of the total amount of this other compositions, Ultraviolet hardening adhesive compound total relative to the device used for image display double-sided adhesive sheet for obtaining the present invention Amount is about 0 weight %～about 74 weight %, is preferably from about 5 weight %～about 70 weight %.

Further, the amine etc. of auxiliary agent can also will can be caused to be used in combination with above-mentioned Photoepolymerizationinitiater initiater as photopolymerization.Make For spendable amine etc., can enumerate：Benzoic acid 2-dimethylamino ethyl ester, dimethylamino benzoylformaldoxime, to dimethylamino Yl benzoic acid ethyl ester or ESCAROL 507 isopentyl ester etc..In the situation using the photopolymerization such as this amine to cause auxiliary agent Under, it is usually for the content in the gluing resin combination of the device used for image display double-sided adhesive sheet obtaining the present invention 0.005～5 weight %, preferably 0.01～3 weight %.

In the device used for image display double-sided adhesive sheet of the present invention, antioxidant, You Jirong can be added as needed on Agent, silane coupler, polymerization inhibitor, levelling agent, antistatic agent, surface lubricant, fluorescent whitening agent, light stabilizer (for example, are obstructed Amines etc.), the additive such as filler.

As the concrete example of antioxidant, can enumerate for example：Double (the just pungent sulfenyl)-6-(4-hydroxyl-3,5-of BHT, 2,4- Di-tert-butyl amido)-1,3,5-triazine, pentaerythrite four [3-(3,5-di-tert-butyl-hydroxy phenyl) propionic ester], 2,2- Double [3-(the 3-tert-butyl group-5-the first of thiodiethylene double [3-(3,5-di-tert-butyl-hydroxy phenyl) propionic ester], triethylene glycol Base-4-hydroxy phenyl) propionic ester], 1,6-HD double [3-(the 3-tert-butyl group-5-methyl-4-hydroxy phenyl) propionic ester], 3- (3,5-di-tert-butyl-hydroxy phenyl) propionic acid stearyl, N, the double (3,5-di-t-butyl-4-hydroxyl hydrogen of N-hexa-methylene Change cinnamamide), 1,3,5-trimethyl-2,4,6-three (3,5-di-tert-butyl-4-hydroxyl benzyl) benzene, three (3,5-di-t-butyl- 4-hydroxybenzyl) isocyanuric acid ester, octylated diphenylamine, 2,4-double [(pungent sulfenyl) methyl] orthoresol, 3-(the tertiary fourth of 3,5-bis- Base-4-hydroxy phenyl) the different monooctyl ester of propionic acid, dibutyl hydroxy toluene etc..

As the concrete example of organic solvent, can enumerate for example：The alcohols such as methyl alcohol, ethanol, isopropanol；Dimethyl sulfone, diformazan Base sulfoxide, oxolane, dioxane, toluene, dimethylbenzene etc..

As the concrete example of silane coupler, can enumerate for example：3-glycidoxypropyltrime,hoxysilane, 3-ring Oxygen propoxypropyl methyl dimethoxysilane, 3-glycidoxypropyl dimethoxysilane, 2-(3,4-epoxy hexamethylene Base) ethyl trimethoxy silane, N-(2-amino-ethyl) 3-amino propyl methyl dimethoxysilane, γ-mercaptopropyi front three TMOS, N-(2-amino-ethyl)-3-amino propyl methyl trimethoxy silane, APTES, 3- Mercaptopropyi trimethoxy silane, vinyltrimethoxy silane, N-(2-(vinyl-benzylamino) ethyl) 3-aminopropyl Trimethoxy silane hydrochloride, 3-methacryloxypropyl trimethoxy silane, 3-chloropropylmethyldimethoxysilane, The silane coupling agents such as 3-r-chloropropyl trimethoxyl silane；Isopropyl (N-ethylaminoethyl amino) titanate esters, isopropyl three Isostearoyl base titanate esters, two (dioctylphyrophosphoric acid ester) fluoroacetic acid titanium, tetra isopropyl two (dioctyl phosphito ester) titanate esters, The titanium class coupling agents such as new alkoxyl three (to N-(beta-aminoethyl) aminophenyl) titanate esters；Acetylacetone,2,4-pentanedione zirconium, methacrylic acid Zirconium, propionic acid zirconium, new alkoxy zirconium ester, the new trineodecanoyl zirconate of new alkoxyl three, new alkoxyl three (dodecane acyl group) benzene sulphur Acyl group zirconate, new alkoxyl three (ethylene amino-ethyl) zirconate, new alkoxyl three (m-aminophenyl base) zirconate, carbon Zirconium class coupling agent or the aluminium class coupling agents etc. such as acid zirconium ammonium, aluminium acetylacetonate, aluminium methacrylate, propionic acid aluminium.

As the concrete example of polymerization inhibitor, can enumerate：P methoxy phenol, methylnaphthohydroquinone etc..

As the concrete example of light stabilizer, can enumerate for example：1,2,2,6,6-pentamethyl-4-piperidine alcohols, 2,2,6,6- Tetramethyl-4-piperidine alcohols, (methyl) acrylic acid 1,2,2,6,6-pentamethyl-4-piperidyl ester (Ai Dike Co., Ltd. system, LA- 82), 1,2,3,4-ethylene-dimalonic acid four (1,2,2,6,6-pentamethyl-4-piperidyl) ester, 1,2,3,4-ethylene-dimalonic acid four (2, 2,6,6-tetramethyl-4-piperidyl) ester, 1,2,3,4-ethylene-dimalonic acid and 1,2,2,6,6-pentamethyl-4-piperidine alcohols and 3,9- Double (2-hydroxyl-1,1-dimethyl ethyl) undecanoic mixed ester compound of-2,4,8,10-four oxaspiro [5.5], decanedioic acid two (2,2,6,6-tetramethyl-4-piperidyl) sebacate, carbonic acid two (1-hendecane epoxide-2,2,6,6-tetramethyl piperidine-4- Base) ester, methacrylic acid 2,2,6,6-tetramethyl-4-piperidyl ester, decanedioic acid two (2,2,6,6-tetramethyl-4-piperidyl) Ester, decanedioic acid two (1,2,2,6,6-pentamethyl-4-piperidyl) ester, 4 benzoyloxy 2,2,6,6 tetramethyl piperidine, 1- [2-[3-(3,5-di-tert-butyl-hydroxy phenyl) propionyloxy] ethyl]-4-[3-(3,5-di-tert-butyl-hydroxy phenyl) Propionyloxy]-2,2,6,6-tetramethyl piperidine, methacrylic acid 1,2,2,6,6-pentamethyl-4-piperidyl ester, [[3,5-is double (1,1-dimethyl ethyl)-4-hydroxy phenyl] methyl] butylmalonic acid two (1,2,2,6,6-pentamethyl-4-piperidyl) ester, the last of the ten Heavenly stems Diacid two (2,2,6,6-tetramethyl-1-(octyloxy)-4-piperidyl) ester, 1,1-dimethyl ethyl hydrogen peroxide are anti-with octane Answer product, N, N ', N " N " '-four (double (butyl-(N-methyl-2,2,6,6-tetramethyl piperidine-4-base) amino)-triazine of 4,6-- 2-yl)-4,7-diaza decane-1,10-diamines, dibutyl amine 1,3,5-triazine N, N '-bis-(2,2,6,6-tetramethyl-4- Piperidyl)-1,6-hexamethylene diamine and N-(2,2,6,6-tetramethyl-4-piperidyl) butylamine condensation polymer, poly-[[6-(1,1, 3,3-tetramethyl butyl) amino-1,3,5-triazine-2,4-diyl] [(2,2,6,6-tetramethyl-4-piperidyl) imino group] six Asia Methyl [(2,2,6,6-tetramethyl-4-piperidyl) imino group]], dimethyl succinate and 4-hydroxyl-2,2,6,6-tetramethyl-1- The polymer of piperidine ethanol, 2,2,4,4-tetramethyl-20-(β-lauryl epoxide carbonyl) ethyl-7-oxa--3,20-diaza Two spiral shells [5.1.11.2] heneicosane-21-ketone, Beta-alanine, N-(2,2,6,6-tetramethyl-4-piperidyl)-dodecyl ester/ Myristyl ester, N-acetyl group-3-dodecyl-1-(2,2,6,6-tetramethyl-4-piperidyl) pyrrolidine-2,5-dione, 2, 2,4,4-tetramethyl-7-oxa--3,20-diaza two spiral shell [5.1.11.2] heneicosane-21-ketone, 2,2,4,4-tetramethyl- 21-oxa--3,20-diazabicylo-[5.1.11.2]-heneicosane-20-propionic acid dodecyl ester/myristyl ester, the third two Acid [(4-methoxyphenyl) methylene] double (1,2,2,6,6-pentamethyl-4-piperidyl) ester, 2,2,6,6-tetramethyl-4-piperidines The high-grade aliphatic ester of alcohol, 1,3-benzenedicarboxamide, N, N '-hindered amines, Austria such as bis-(2,2,6,6-tetramethyl-4-piperidyls) Benzophenone compound, 2-(2H-BTA-2-base)-4-(1,1,3,3-tetramethyl butyl) phenol, the 2-such as his benzophenone (2-hydroxy-5-methyl base phenyl) BTA, 2-[2-hydroxyl-3-(3,4,5,6-tetrahydric phthalimide ylmethyl)-5- Aminomethyl phenyl] BTA, 2-(the 3-tert-butyl group-2-hydroxy-5-methyl base phenyl)-5-chlorobenzotriazole, 2-(2-hydroxyl-3,5- Di-tert-pentyl-phenyl) BTA, 3-(3-(2H-BTA-2-base)-5-tert-butyl-hydroxy phenyl) methyl propionate with The benzotriazole chemical combination such as the product of polyethylene glycol, 2-(2H-BTA-2-base)-6-dodecyl-4-methylphenol The benzoates such as thing, 2,4-di-tert-butyl-phenyl-3,5-di-tert-butyl-4-hydroxybenzoic acid ester, 2-(4,6-diphenyl-1, 3,5-triazine-2-bases) compound in triazine class etc., particularly preferably hindered amine compound such as-5-[(hexyl) epoxide] phenol.

As the concrete example of filler, can enumerate for example：Crystalline silica, fused silica, aluminum oxide, zirconium Stone, calcium silicates, calcium carbonate, carborundum, silicon nitride, boron nitride, zirconium oxide, forsterite, steatite, spinelle, titanium dioxide, The powder of talcum etc. or by pearl obtained from their nodularizations etc..

In the case of there is various additive in the composition, various additives are being used for obtaining device used for image display pair Part by weight in the light-cured type transparent adhesive composition of face bonding sheet is 0.01～3 weight %, is preferably 0.01～1 weight Amount %, more preferably 0.02～0.5 weight %.

Ultraviolet hardening adhesive compound for obtaining the device used for image display double-sided adhesive sheet of the present invention can To be obtained by above-mentioned each composition is carried out mixed dissolution in normal temperature～80 DEG C, it is also possible to operate as desired by filtration etc. Remove field trash.When considering coating, the match ratio of the preferably suitable modifying ingredients of the gluing resin combination of the present invention makes The viscosity of 25 DEG C is the scope of 300～15000mPa s.

Then, to the piece obtaining device used for image display double-sided adhesive sheet from above-mentioned ultraviolet hardening adhesive compound Preparation method illustrate.

Ultraviolet hardening adhesive compound containing above-mentioned (methyl) acrylate (K), emollient ingredients (G) is usual Contain above-mentioned organic solvent further.Further, by above-mentioned ultraviolet hardening adhesive compound being coated on base material (generally For mould release film) on reach certain thickness and be dried, mould release film of then fitting, can obtain with the demoulding thin Two-sided of the device used for image display of film.

As long as it the condition needed for the evaporation of condition solvent being dried, is just not particularly limited, for example, can use at 50 DEG C ～300 DEG C (being for example, 50～150 DEG C in the case of using mould release film) carry out several minutes～several tens minutes (for example, about 1 Minute～about 60 minutes) be dried condition.So obtained becomes the form that there is not solvent or only exist a small amount of solvent.? This, residual solvent amount is preferably below 5000ppm, more preferably below 1000ppm, particularly preferably below 100ppm.

In addition, the species of mould release film is also not particularly limited, for example, can use PET film.

So obtained device used for image display double-sided adhesive sheet forms following composition：(methyl) acrylate in composition Do not carry out crosslinking and polymerization, (methyl) acryloyl group former state residual and be laminated.

It is the optics with light shielding part that the device used for image display double-sided adhesive sheet of the present invention is preferred at least one At least two optical element laminating of base material manufactures the purposes of contact panel.

The cure shrinkage of the solidfied material of the device used for image display double-sided adhesive sheet of the present invention is preferably less than 3.0%, Particularly preferably less than 2.0%.Thus, during the solidification of ultraviolet hardening adhesive compound, can reduce in resin cured matter The internal stress of accumulation, can effectively prevent at base material and the layer of the solidfied material comprising ultraviolet hardening adhesive compound Interface produces strain.

In addition, in the case that the base materials such as glass are thin, when cure shrinkage is big, warpage during solidification increases, therefore to aobvious Show that performance brings big harmful effect, therefore, from this viewpoint, it is also preferred that cure shrinkage is less.

Then, excellent to the manufacturing process of the optical component of the device used for image display double-sided adhesive sheet employing the present invention Manufacture is selected to illustrate.

In the manufacture method of the optical component of the present invention, preferably by following (operation 1)～(operation 3) by least two light Learn base material laminating.It should be noted that judge to be able to ensure that the situation of sufficient adhesive strength in the stage of (operation 2) Under, it is convenient to omit (operation 3).

Below as a example by liquid crystal display with the laminating of the transparency carrier with light shielding part, to via operation 1～operation 3 The detailed description of the invention of manufacture method of optical component of the present invention illustrate.

(manufacture of image display device)

The method is by fitting and obtaining the method for optical component liquid crystal display and transparency carrier.

Liquid crystal display refers to possess partially on the component after being formed with between a pair substrate of electrode inclosure liquid crystal material Vibration plate, driving circuit, signal input line cable, the liquid crystal display of back light unit.

Transparency carrier is glass plate, polymethyl methacrylate (PMMA) plate, Merlon (PC) plate, ester ring type polyolefin The transparency carrier of polymer (COP) plate, acrylic resin, PET etc..For transparency carrier, can To implement dura mater process, antireflection process to single or double.

Here, transparency carrier can be preferably used on the surface of transparency carrier light shielding part transparent with black frame-shaped Substrate, light shielding part is formed by Continuous pressing device for stereo-pattern or coating or printing coatings etc..It should be noted that the present invention also can answer For not having the transparency carrier of light shielding part, but in the explanation of following embodiment, with there is light shielding part situation for tool Style illustrates.In the case that not there is light shielding part, if " having the transparency carrier of light shielding part " is replaced with " transparent base Plate ", then can directly regard the example of the situation without light shielding part as.

(operation 1)

First, from the double-sided adhesive sheet with two-sided mould release film, peel off the mould release film in a face, then will bonding Face configuration liquid crystal display display surface or have light shielding part transparency carrier the face defining light shielding part surface on.

Resin cured matter layer after the thickness of regulation device used for image display double-sided adhesive sheet makes laminating is 50～500 μ M, preferably 50～350 μm, more preferably 100～350 μm.

(operation 2)

Then, the mould release film of remaining device used for image display double-sided adhesive sheet is peeled off, then in the way of in opposite directions Liquid crystal display is fitted with the transparency carrier with light shielding part.Laminating can be entered with under any one in vacuum in an atmosphere OK.

Here, in order to produce bubble when preventing from fitting, preferably fit in a vacuum.

Laminating can be carried out by pressurization, compacting etc..

(operation 3)

Then, to optical component obtained from transparency carrier and liquid crystal display are fitted from having the transparent of light shielding part Substrate-side irradiation ultraviolet radiation, so that the solidification of device used for image display double-sided adhesive sheet.

Ultraviolet irradiation amount is preferably from about 100～4000mJ/cm in terms of accumulated light², particularly preferably be about 200～about 3000mJ/cm².With regard to the light source using when being irradiated solidify by ultraviolet～near ultraviolet light, as long as irradiate purple Then no matter light source is how for the lamp of outward～near ultraviolet light.Can enumerate for example：Low pressure mercury lamp, high-pressure sodium lamp or ultra high pressure mercury Lamp, metal halide lamp, (pulse) xenon lamp or electrodeless lamp etc..

So, it is possible to obtain optical component.

Transmissivity under the 400nm～800nm of the solidfied material of the device used for image display double-sided adhesive sheet of the present invention is preferred It is more than 90%.This is because：In the case that transmissivity is less than 90%, light is difficult to pass through, when for display device, visual Reduce.

In addition, during the transmissivity height of the 400nm～450nm of solidfied material, the raising of visuality can be expected further, because of This, the transmissivity under 400nm～450nm is preferably more than 90%.

The device used for image display double-sided adhesive sheet of the present invention can be suitable as adhesive, and this adhesive is for by multiple Optical element is fitted thus is manufactured optical component.

As the optical element using in the manufacture method at the optical component of the present invention, can enumerate：Transparent panel, piece, Contact panel and display body unit etc..

In the present invention, " optical element " refers to not have the optical element of light shielding part on surface and has shading on surface Both optical elements in portion.In the manufacture of the optical component of the present invention, in the multiple optical elements preferably being used extremely A few optical element being to have light shielding part.

The position of the light shielding part in the above-mentioned optical element with light shielding part is not particularly limited.As preferred mode, The periphery that can be set forth in this optical element forms width, the preferably from about 0.05mm～about 10mm with 0.05mm～20mm Width, the situation of light shielding part of banding of width of even more preferably about 0.1mm～about 6mm.Light shielding part on optical element can To be formed by Continuous pressing device for stereo-pattern, coating or printing coatings etc..

Material as the optical element using in the present invention, it is possible to use various materials.Specifically, can enumerate： The resins such as the compound of PET, PC, PMMA, PC and PMMA, glass, COC, COP, plastics (acrylic resin etc.).As this The optical element of bright middle use, such as transparent panel or piece, it is possible to use obtained from the films such as multiple polarization plates or piece are laminated Piece or transparent panel；The piece not being laminated or transparent panel；And transparent panel (unorganic glass plate and the processing thereof being made up of unorganic glass Product, such as lens, prism, ito glass) etc..In addition, the optical element using in the present invention beyond above-mentioned polarization plates etc. and also Including contact panel (contact panel input pickup) or following display unit etc. comprise the duplexer of multiple feature board or piece (hereinafter also referred to as " functional layer stack ").

As the piece that can act as the optical element using in the present invention, can enumerate：Icon sheet, cosmetic sheet, protection Piece.As the plate (transparent panel) that can use in the manufacture method of the optical component of the present invention, decorative panel, protection can be enumerated Plate.As the material of these pieces or plate, the material that the material as transparent panel is enumerated can be applied.

As the material on the contact panel surface that can act as the optical element using in the present invention, can enumerate：Glass The compound of glass, PET, PC, PMMA, PC and PMMA, COC, COP.

The thickness of the optical element of the tabular such as transparent panel or piece or sheet is not particularly limited, typically about 5 μm～about 5cm, the thickness being preferably from about 10 μm～about 10mm, even more preferably about 50 μm～about 3mm.

As the preferred contact panel using in the present invention, can enumerate and will there is the saturating of the tabular of light shielding part or sheet Bright optical element is consolidated with the contact panel ultraviolet hardening adhesive compound of the above-mentioned functions duplexer present invention Optical component obtained from compound laminating.

In addition, as an optical element and use optical function material by using the display units such as liquid crystal indicator Material, as another optical element, can manufacture display body unit (the hereinafter also referred to display surface with optical functional materials Plate).As above-mentioned display unit, can enumerate for example：Be pasted with LCD, EL display of polarization plates on glass, EL shines The display devices such as bright, Electronic Paper, plasma scope.In addition, as optical functional materials, can enumerate：Acrylic compounds tree The transparent plastic sheets such as fat plate, PC plate, PET sheet, PEN plate；Strengthening glass, contact panel input pickup.

When the adhesive material as laminating optical element uses, in order to improve visuality, the refractive index of solidfied material is When 1.45～1.55, the visuality of display image improves, therefore preferably further.

When in the range of this refractive index, the specific refractivity with the base material using as optical element can be reduced, from And the diffusing reflection of light can be suppressed to make light loss reduce.

The optics comprising display body unit with the optical element with light shielding part being obtained by the manufacture method of the present invention Component can be assembled in the such as electronic equipments such as television set, small game machine, mobile phone, PC.

The excellent flexibility of the device used for image display double-sided adhesive sheet of the present invention, moisture-proof, heat resistance, light resistance are high, Air gap filler etc. in display devices such as liquid crystal indicator, organic EL display, touching control panel image display devices Purposes is useful.

Embodiment

Further illustrate the present invention by the following examples, but the invention is not restricted to following embodiment.

(synthesis example 1)

To possessing reflux condenser, mixer, thermometer, thermostatic reactor put into as the poly-fourth of hydrogenation Tso Tat Co., Ltd., Japan's GI-2000 (iodine number of cyclohexadienediol compound：12.2, hydroxyl value：46.8mg·KOH/g) 545.99g (0.23mol), Asahi Glass Co., Ltd EXCENOL3020 (polypropylene glycol, hydroxyl value as diol compound： 35.9mg KOH/g) 7.19g (0.0023mol), toluene 208g, it is stirred until homogeneous, make internal temperature be 50 DEG C.Then, add As the IPDI 61.35g (0.28mol) of polyisocyanate compound, it is made to react to reaching at 80 DEG C Till target NCO content.Then, add the 4-metoxyphenol 0.37g as polymerization inhibitor, be stirred until homogeneous, add as tool There is Osaka Organic Chemical Industry Co., Ltd. acrylic acid 2-of (methyl) acrylate compounds of at least more than one hydroxyl Hydroxy methacrylate 11.00g (0.095mol), the tin octoate 0.20g as urethane catalysts, make it anti-at 80 DEG C Should, as the terminal of reaction when NCO content is reached less than 0.1%, obtain urethanes (E-1).Obtained poly-ammonia The weight average molecular weight of ester compounds is 66700.

(synthesis example 2)

To possessing reflux condenser, mixer, thermometer, thermostatic reactor put into as the poly-fourth of hydrogenation Tso Tat Co., Ltd., Japan's GI-2000 (iodine number of cyclohexadienediol compound：12.2, hydroxyl value：46.8mg·KOH/g) 522.50g (0.22mol), Asahi Glass Co., Ltd EXCENOL3020 (polypropylene glycol, hydroxyl value as diol compound： 35.9mg KOH/g) 6.88g (0.0022mol), toluene 73.4g, it is stirred until homogeneous, make internal temperature be 50 DEG C.Then, add Add the IPDI 88.9g (0.40mol) as polyisocyanate compound, make it react to reaching at 80 DEG C Till target NCO content.Then, add the 4-metoxyphenol 0.37g as polymerization inhibitor, be stirred until homogeneous, add as tool There is Osaka Organic Chemical Industry Co., Ltd. acrylic acid 2-of (methyl) acrylate compounds of at least more than one hydroxyl Hydroxy methacrylate 41.80g (0.36mol), the tin octoate 0.20g as urethane catalysts, make it anti-at 80 DEG C Should, as the terminal of reaction when NCO content is reached less than 0.1%, obtain urethanes (E-2).Obtained poly-ammonia The weight average molecular weight of ester compounds is 15000.

(embodiment 1)

By the E-1 (urethanes) 109 parts of synthesis example 1, YASUHARA CHEMICAL Co., Ltd. system ClearonTO-125 (aromatic modified terpene resin) 18 parts, ESACURE KIP150 (alpha-alcohol ketone based polymer) 5 parts, first 40 parts of mixed dissolutions of benzene, obtain resin combination.Utilize knife type coater at the PET film (thickness processing through silicon system releasing agent 50 μm) demoulding process face on resin combination obtained by even spread so that the thickness of dried resin composition layer Being 100 μm, making it be dried 3 minutes at 120 DEG C, after being dried, fit on resin composition layer the PET processing through silicon system releasing agent The demoulding of film processes face, obtains (constituting of the present invention：The demoulding processes PET/ resin composition layer/demoulding and processes PET) resin Composition piece.

(embodiment 2)

By the E-1 (urethanes) 100 parts of synthesis example 1, Japan Oil Co's BLEMMER LA (lauryl Ester) 2 parts, YASUHARA CHEMICAL Co., Ltd. ClearonM-105 (aromatic modified hydrogenated terpene resin) 18 part, days This Cao Da Co., Ltd. GI-2000 (1,2-hydrogenated polybutadiene diol) 5 parts, LAMBSON SpeedcureTPO (2,4,6- Trimethyl benzoyl diphenyl base phosphine oxide) 0.4 part, ESACURE KIP150 (alpha-alcohol ketone based polymer) 2 parts, toluene 42 Part mixed dissolution, obtains resin combination.

Obtained resin combination is coated similarly to Example 1, is dried, obtain resin composition sheet.

(embodiment 3)

By the E-1 (urethanes) 100 parts of synthesis example 1, Japan Oil Co's BLEMMER LA (lauryl Ester) 2 parts, YASUHARA CHEMICAL Co., Ltd. ClearonM-105 (aromatic modified hydrogenated terpene resin) 18 parts, JX Kuang stone Energy KK's system (polybutene) 5 parts, LAMBSON SpeedcureTPO (2,4,6-trimethylbenzoyl Diphenyl phosphine oxide) 0.4 part, ESACURE KIP150 (alpha-alcohol ketone based polymer) 2 parts, 42 parts of mixed dissolutions of toluene, obtain Resin combination.

(embodiment 4)

E-2 (urethanes) 28 part, day oil by the E-1 (urethanes) 67 parts of synthesis example 1, synthesis example 2 2 parts of Co., Ltd. BLEMMER LA (lauryl acrylate), YASUHARA CHEMICAL Co., Ltd. ClearonM-105 (aromatic modified hydrogenated terpene resin) 18 parts, Tso Tat Co., Ltd., Japan GI-2000 (1,2-hydrogenated polybutadiene diol) 5 Part, LAMBSON SpeedcureTPO (2,4,6-trimethyl benzoyl diphenyl base phosphine oxide) 0.4 part, ESACURE system KIP150 (alpha-alcohol ketone based polymer) 2 parts, 47 parts of mixed dissolutions of toluene, obtain resin combination.

Embodiment 1～4 is shown in table 1 and carries out following evaluation.

[table 1]

(detecting refractive index)

Use high-pressure sodium lamp (120W/cm, ozone free) to process the resin composition sheet to the present invention for the PET through the demoulding to irradiate Accumulated light 3000mJ/cm²Ultraviolet, make resin composition layer solidify.

The refractive index (20 DEG C) of the resin bed after utilizing RX-7000CX (Co., Ltd.'s ATAGO system) to measure solidification.

(modulus of shearing mensuration)

The modulus of shearing (30 DEG C) of the resin bed after utilizing ARES (TA Instruments) to measure solidification.

(transmissivity mensuration)

The demoulding of the resin composition sheet of the present invention is processed PET peel off, and be fitted on the glass plate of thickness 1mm, from And produce and (constitute：1mm glass plate/resin composition layer/1mm glass plate) test film.

High-pressure sodium lamp (120W/cm, ozone free) is used to irradiate accumulated light through glass to made test film 3000mJ/cm²Ultraviolet, make resin composition layer solidify.

Resin solidity test piece obtained by utilizing spectrophotometer UV-3600 (Shimadzu Scisakusho Ltd's system) to measure Transmissivity.As a result, the transmissivity of 380nm～780nm is more than 95%.

(mist degree mensuration)

The demoulding of the resin composition sheet of the present invention is processed PET peel off, and be fitted on the glass plate of thickness 1mm, system Make and (constituting：1mm glass plate/resin composition layer/1mm glass plate) test film.

The haze value of the resin solidity test piece obtained by utilizing haze meter TC-HIIIDPK (Tokyo electricity look system) to measure.Its Result is, haze value is less than 0.5, is transparent.

(adhesion test)

The unilateral demoulding of the resin composition sheet of the present invention is processed PET peel off, and the COP film (Japan with 100 μm ZEON Co., Ltd. system) laminating, cut into the wide strip of 25mm.Taking off of the opposite side of the film of the strip that cutting is obtained Mould processes PET and peels off half, and laminating on a glass, uses high-pressure sodium lamp (120W/cm, ozone free) to irradiate from glass plate side tired Long-pending light quantity 3000mJ/cm²Ultraviolet, make resin composition layer solidify.Utilize EZ-Test (Shimadzu Scisakusho Ltd's system) Carry out adhesion test (180 ° of strippings, peeling rate 300mm/ minutes) to obtained resin solidity test piece.

(durability)

The demoulding of the resin composition sheet of the present invention is processed PET peel off, be fitted on the glass plate of thickness 1mm, make Go out and (constitute 1：1mm glass plate/resin composition layer/1mm glass plate) (constitute 2：1mm glass plate/resin composition layer/polarization Film/acrylic acid series adhesive layer/1mm glass plate) test film.

Resin solidity test piece obtained by using, carry out 100 hours 85 DEG C of heat resistant tests, 60 DEG C of 90%RH wet-heat resistings Test.Its result, the resin cured matter test film after terminating endurancing by visual observation is confirmed, not from glass Plate and polarizing coating are peeled off.

According to the above results, the transmissivity of the device used for image display double-sided adhesive sheet confirming the present invention is high, haze value Low, adhesiveness, heat resistance, humidity resistance are excellent.

The present invention is described in detail with reference to specific mode, but it is obvious to the skilled person that Can make various changes and modifications without departing from the spirit and scope of the present invention.

It should be noted that the application based on the Japanese patent application (2014-120621) proposing on June 11st, 2014 and The Japanese patent application (2015-112948) that on June 3rd, 2015 proposes, quotes entire contents by quoting.In addition, What this quoted is incorporated in this specification all referring to overall form.

Industrial applicibility

The transparency height of the device used for image display double-sided adhesive sheet of the present invention, adhesion, excellent durability, therefore conduct Optical applications component is useful.Additionally, the resin composition sheet of the present invention is as the glue by transparent display body baseplate-laminating Stick is useful.

Claims

1. a device used for image display double-sided adhesive sheet, its contain selected from by carbamate (methyl) acrylate, have In the group of (methyl) acrylate of polyisoprene skeleton or (methyl) acrylate composition with butadiene skeletal extremely Few a kind of (methyl) acrylate (K) and emollient ingredients (G).

2. a device used for image display double-sided adhesive sheet, it is obtained by being dried ultraviolet-curing resin composition Arrive, described ultraviolet-curing resin composition contain selected from by carbamate (methyl) acrylate, there is poly-isoamyl two At least one (first in the group of (methyl) acrylate of alkene skeleton or (methyl) acrylate composition with butadiene skeletal Base) acrylate (K), emollient ingredients (G).

3. device used for image display double-sided adhesive sheet as claimed in claim 1 or 2, it is characterised in that described (methyl) propylene Acid esters is carbamate (methyl) acrylate, and described carbamate (methyl) acrylate is to make following shown chemical combination Thing (A), compound (B), compound (C) and compound (D) reaction obtained from urethanes (E),

Compound (A)：Hydrogenated butadiene polymer polyol compound

Compound (B)：Polyisocyanate compound

Compound (D)：Diol compound beyond compound (A).

4. a device used for image display double-sided adhesive sheet, it is characterised in that containing hydrogenated butadiene polymer polyol compound (A) Iodine number be the urethanes (E) described in 20 claims below 3.

5. a device used for image display double-sided adhesive sheet, it is characterised in that be aliphatic containing polyisocyanate compound (B) It is the urethanes (E) described in claim 3 or 4 of diisocyanate cpd.

6. a device used for image display double-sided adhesive sheet the, it is characterised in that containing (first with at least more than one hydroxyl Base) poly-ammonia according to any one of the claim 3 to 5 of (methyl) acrylic acid 2-hydroxy methacrylate for the acrylate compounds (C) Ester compounds (E).

7. a device used for image display double-sided adhesive sheet, it is characterised in that containing the diol compound beyond compound (A) (D) it is the urethanes (E) according to any one of claim 3 to 6 of PPG.

8. a device used for image display double-sided adhesive sheet, it is characterised in that containing according to any one of claim 1 to 7 Polymerizable compound (F) beyond urethanes (E) and (E).

9. the device used for image display double-sided adhesive sheet as according to any one of claim 1～8, it is characterised in that contain Any one or both in hydroxy polymer, terpenic series resin are as emollient ingredients (G).

10. a solidfied material, it is by the device used for image display double-sided adhesive sheet according to any one of claim 1～9 Irradiate active energy beam and obtain.

11. 1 kinds of contact panels, it is characterised in that use the device used for image display according to any one of claim 1～9 double Face bonding sheet forms.

12. 1 kinds of device used for image display double-sided adhesive sheets, its contain selected from by carbamate (methyl) acrylate, have In the group of (methyl) acrylate of polyisoprene skeleton or (methyl) acrylate composition with butadiene skeletal extremely Few a kind of (methyl) acrylate (K) or emollient ingredients (G).

13. 1 kinds of device used for image display double-sided adhesive sheets, its contain selected from by carbamate (methyl) acrylate, have In the group of (methyl) acrylate of polyisoprene skeleton or (methyl) acrylate composition with butadiene skeletal extremely Few a kind of (methyl) acrylate (K), emollient ingredients (G) and solvent.

The manufacture method of 14. 1 kinds of image display devices, utilizes claim 1～9, the image according to any one of 12～13 to show Optical element is fitted via following operation 1～2 and is obtained image display device by showing device double-sided adhesive sheet,

Operation 1：The mould release film in one face of the device used for image display double-sided adhesive sheet with mould release film is peeled off, and will Operation at least one optical element for the device used for image display double-sided adhesive sheet configuration；

Operation 2：Mould release film stripping by a remaining face of the device used for image display double-sided adhesive sheet of configuration in operation 1 From, and the operation of another optical element of fitting.

The manufacture method of 15. 1 kinds of image display devices, utilizes claim 1～9, the image according to any one of 12～13 to show Optical element is fitted via following operation 1～3 and is obtained image display device by showing device double-sided adhesive sheet,

Operation 2：Mould release film stripping by a remaining face of the device used for image display double-sided adhesive sheet of configuration in operation 1 From, and the operation of another optical element of fitting；

Operation 3：Pass through the optical element with light shielding part to the device used for image display double-sided adhesive in the optical element after laminating The operation closed piece irradiation ultraviolet radiation and make this solidification nitride layer solidify.