CN103937416A - Adhesive layer and adhesive film - Google Patents

Adhesive layer and adhesive film Download PDF

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Publication number
CN103937416A
CN103937416A CN201310722015.4A CN201310722015A CN103937416A CN 103937416 A CN103937416 A CN 103937416A CN 201310722015 A CN201310722015 A CN 201310722015A CN 103937416 A CN103937416 A CN 103937416A
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China
Prior art keywords
adhesive layer
methyl
monomer
adhesive
film
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CN201310722015.4A
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CN103937416B (en
Inventor
长仓毅
岛口龙介
长谷川良
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Fujimori Kogyo Co Ltd
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Fujimori Kogyo Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/385—Acrylic polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C09J133/04—Homopolymers or copolymers of esters
    • C09J133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C09J133/04—Homopolymers or copolymers of esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/40—Adhesives in the form of films or foils characterised by release liners
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention provides a thin film with the thickness of 1[mu]m-20[mu]m and being high in bonding property and adhesive property, an adhesive layer with an anti-static function, and an adhesive film using the adhesive layer. The adhesive layer is formed by crossilinking adhesive compositions containing copolymers and ionic compounds, wherein the copolymers comprises at least one of (methyl) acrylic acid alkyl ester monomers having alkyl carbons of from C1 to C14 and at least one of (methyl) acrylic ester monomers having aryl groups, and other copolymer monomers also comprises at least one of nitrogenous vinyl monomers, and at least one of copolymerized vinyl monomers having carboxyl and/or copolymerized vinyl monomers having hydroxyl. The thickness of the adhesive layer is from 1[mu]m to 20[mu]m, and when the adhesive layer is 5[mu]n thick, the adhesive force of the adhesive layer is larger than 3.0N/25mm.

Description

Adhesive layer and adhesive film
Technical field
The present invention relates to adhesive layer and the adhesive film of interlayer laminating for optics etc.More specifically, although to the invention provides a kind of be that thickness is that the film of 1 μ m～20 μ m has both the performance of high cohesive force, high tack and the adhesive layer of antistatic property and uses the adhesive film of described adhesive layer.
Background technology
For by adhesive layer by the optical member adhering such as Polarizer, polarizer liquid crystal cells etc. by adherend on, various adhesive films (for example,, with reference to patent documentation 1～2) have been proposed.
In patent documentation 1, record a kind of monomer using butyl acrylate etc. as main component, and the optics adhesive composition that contains acrylamide compound etc.
In patent documentation 2, recorded a kind of using have carbonatoms be (methyl) acrylate of 4～8 alkyl as the monomer of main component, and there is the optics adhesive composition of carboxylic monomer and nitrogenous vinyl monomer.
In addition, in order to improve the specific refractory power of adhesive layer, through repeatedly having researched and proposed multiple adhesive film (for example,, with reference to patent documentation 3～8).
In patent documentation 3, record and a kind ofly there is aromatic ring and contain the optics adhesive composition that specific refractory power is 1.51～1.75 tackifier.
In patent documentation 4, recorded a kind of bonding sheet having used containing the adhesive composition of copolymerization polymkeric substance, described copolymerization polymkeric substance is the copolymerization polymkeric substance containing the acrylic acid modified monomer of aromatic ring.
In patent documentation 5, record and a kind ofly had containing the tackifying resin of aromatic ring and the optics adhesive composition of aromatic phosphoric ester class softening agent.
In patent documentation 6, recorded a kind of binding agent forming that solidified by adhesive composition, described adhesive composition comprises: acrylic resin; And containing the aromatics of an ethene unsaturated group.
In patent documentation 7, recorded a kind of by containing the acrylic adhesive of aromatic monomer by phase retardation film and the birefringent plate optical element forming that interfixes.
In patent documentation 8, recorded a kind of adhesive composition that contains urethane resin, described urethane resin is that aromatic diisocyanate and the reaction of aromatic polyester glycol are formed.
In recent years, in order to realize the filming of optics, requiring the adhesive film of fitting for the interlayer of optics is that adhesive layer is the adhesive film of the following thin layer of thickness 20 μ m.
Conventionally, the cohesive force of adhesive layer and the thickness of adhesive layer are roughly proportional, therefore, if by the thickness attenuation of adhesive layer, can reduce cohesive force thereupon.
But, require in recent years adhesive film to there is following performance: even by the thickness attenuation of adhesive layer, also there is the cohesive force equal with adhesive film (adhesive layer is the thick-layer that thickness is about 30 μ m) in the past, and for the weather resistance after long-time placement under high temperature, high humidity environment, also have and the equal above performance of adhesive film in the past.
In addition, from can and forming the viewpoint without the adhesive layer of enforcement ageing treatment (implementing slaking under constant temperature) by the thickness attenuation of adhesive layer, requirement is formed as NCF(Non Carrier Film, non-bearing film) form, its have the adhesive layer comprising after the base material that has removed adhesive film " mold release film/adhesive layer/mold release film " parts form.
In addition, in adhesive film in the past, owing to implementing ageing treatment after the adhesive film of fitting on by adherend, therefore, can improve by the tack between adherend and adhesive layer.
But the adhesive film of employing NCF form has completed the ageing treatment of adhesive layer, therefore by the tack deficiency between adherend and adhesive layer.Based on this, existence need to be to being carried out the surface-treated problems such as corona treatment by the surface of adherend.
Therefore need a kind of adhesive film that meets these requirements and overcome these problems.
Prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2012-177022 communique
Patent documentation 2: TOHKEMY 2012-201734 communique
Patent documentation 3: TOHKEMY 2007-084762 communique
Patent documentation 4: TOHKEMY 2011-153169 communique
Patent documentation 5: TOHKEMY 2012-167188 communique
Patent documentation 6: TOHKEMY 2012-021148 communique
Patent documentation 7: TOHKEMY 2006-293281 communique
Patent documentation 8: TOHKEMY 2009-091522 communique
Summary of the invention
The problem that invention will solve
The present invention is the invention In view of the foregoing completing, its problem is, is that thickness is that the film of 1 μ m～20 μ m has both the performance of high cohesive force, high tack and the adhesive layer of antistatic property and uses the adhesive film of described adhesive layer although provide a kind of.
Solve the method for problem
In order to solve above-mentioned problem, technological thought of the present invention is: the adhesive composition that comprises acrylic polymers is cross-linked in the adhesive layer forming, at least one monomer as main component in (methyl) alkyl acrylate monomer that is C1～C14 using alkyl carbon atoms number, and it is above and carry out copolymerization and crosslinked to contain at least one in can the nitrogenous vinyl monomer of copolymerization as other copolymerization monomer, and by containing ionic compound, form and have both the performance of tough and tensile cohesive force and high tack and the adhesive layer of antistatic property thus.
In addition, in order to solve above-mentioned problem, the invention provides a kind of adhesive layer, it is the adhesive layer that adhesive composition is cross-linked form, wherein,
Described adhesive composition comprises multipolymer and ionic compound,
Described multipolymer comprises: more than at least one in (methyl) alkyl acrylate monomer that alkyl carbon atoms number is C1～C14; More than containing at least one in (methyl) acrylate monomer of aryl; And other copolymerization monomer,
Described other copolymerization monomer comprises: more than at least one in nitrogenous vinyl monomer; And more than at least one in the copolymerization sex ethylene base monomer of carboxylic copolymerization sex ethylene base monomer and/or hydroxyl,
The thickness of described adhesive layer is 1 μ m～20 μ m, and cohesive force in the time of thickness 5 μ m is 3.0(N/25mm) more than.
In addition, preferred described adhesive composition comprises:
Weight-average molecular weight is 200,000～2,000,000 multipolymer, more than at least one in its (methyl) alkyl acrylate monomer that is C1～C14 with respect to combination 70～95 weight parts (A) alkyl carbon atoms number contain at least one above total 100 weight part that form in (methyl) acrylate monomer of aryl with (B) of 5～30 weight parts, more than at least one in more than one in (C) nitrogenous vinyl monomer of cooperation 5～50 weight parts and (D) carboxylic copolymerization sex ethylene base monomer of 0.1～5 weight part and/or the copolymerization sex ethylene base monomer of hydroxyl obtain monomer mixture, and this monomer mixture copolymerization is formed,
(E) fusing point of 0.1～5.0 weight part is the ionic compound of 30～50 DEG C; And
(F) linking agent of 0.01～5 weight part.
In addition, in aforementioned adhesive composition, with respect to total 100 weight parts of aforementioned (A) and aforementioned (B), the content of more than one in preferred carboxylic copolymerization sex ethylene base monomer is that more than one the content in the copolymerization sex ethylene base monomer of the following and/or hydroxyl of 2.0 weight parts is below 5.0 weight parts.
In addition, the specific refractory power of described adhesive layer is preferably 1.47～1.50.
In addition, the invention provides the adhesive film that a kind of one side in mold release film is formed with described adhesive layer and has the formation of mold release film/adhesive layer/mold release film.
In addition, the invention provides the adhesive film that the stacked aforementioned adhesive layer of a kind of one side at base material forms.
In addition, the invention provides a kind of Polarizer and display panel laminating adhesive film that has used aforementioned adhesive film.
In addition, the invention provides a kind of touch panel film that has used adhesive film.
In addition, the invention provides a kind of Electronic Paper film that has used above-mentioned adhesive film.
In addition, the invention provides a kind of blooming with adhesive layer, it is stacked above-mentioned adhesive layer at least one face of blooming.
Invention effect
According to the present invention, can meet requiring item and overcoming the problem existing in conventional art in conventional art, although can provide a kind of is that thickness 1 μ m～20 μ m film has both the performance of high cohesive force, high tack and the adhesive layer of antistatic property, also provide the adhesive film that uses described adhesive layer.
Embodiment
Below, based on the present invention is preferred embodiment described.
Adhesive layer of the present invention is the adhesive layer that adhesive composition is cross-linked form, wherein,
Described adhesive composition comprises multipolymer and ionic compound,
Described multipolymer comprises: more than at least one in (methyl) alkyl acrylate monomer that alkyl carbon atoms number is C1～C14; More than containing at least one in (methyl) acrylate monomer of aryl; And other copolymerization monomer,
Described other copolymerization monomer comprises: more than one in nitrogenous vinyl monomer; And more than at least one in the copolymerization sex ethylene base monomer of carboxylic copolymerization sex ethylene base monomer and/or hydroxyl,
The thickness of described adhesive layer is 1 μ m～20 μ m, and cohesive force in the time of thickness 5 μ m is 3.0(N/25mm) more than.
In addition, in the purposes of the higher cohesive force of needs, the cohesive force of preferred adhesive layer of the present invention in the time of thickness 5 μ m is 4.0(N/25mm) more than.
(methyl) alkyl acrylate monomer that is C1～C14 as alkyl carbon atoms number, can enumerate (methyl) methyl acrylate, (methyl) ethyl propenoate, (methyl) propyl acrylate, (methyl) isopropyl acrylate, (methyl) butyl acrylate, (methyl) isobutyl acrylate, (methyl) vinylformic acid pentyl ester, (methyl) Ethyl acrylate, (methyl) vinylformic acid heptyl ester, (methyl) Octyl acrylate, (methyl) Isooctyl acrylate monomer, (methyl) 2-EHA, (methyl) vinylformic acid ester in the ninth of the ten Heavenly Stems, (methyl) vinylformic acid ester in the different ninth of the ten Heavenly Stems, (methyl) decyl acrylate, (methyl) vinylformic acid undecyl ester, (methyl) dodecylacrylate, (methyl) tridecyl acrylate, (methyl) vinylformic acid tetradecyl ester, (methyl) vinylformic acid ring pentyl ester, more than at least one in (methyl) cyclohexyl acrylate etc.Alkyl in (methyl) alkyl acrylate monomer can be any one in straight chain, side chain, ring-type.(methyl) acrylate monomer that is C1～C14 with respect to (A) alkyl carbon atoms number and total 100 weight parts that (B) contain (methyl) acrylate monomer of aryl, the content of (methyl) acrylate monomer that preferably (A) alkyl carbon atoms number is C1～C14 is 70～95 weight parts.
As (methyl) acrylate monomer containing aryl, can enumerate (methyl) benzyl acrylate, (methyl) vinylformic acid naphthalene ester, (methyl) phenoxyethyl acrylate, (methyl) vinylformic acid benzene oxygen butyl ester, (methyl) vinylformic acid 2-(1-naphthyloxy) ethyl ester, (methyl) vinylformic acid 2-(2-naphthyloxy) ethyl ester, the own ester of (methyl) vinylformic acid 6-(1-naphthyloxy), the own ester of (methyl) vinylformic acid 6-(2-naphthyloxy), (methyl) vinylformic acid 8-(1-naphthyloxy) monooctyl ester, (methyl) vinylformic acid 8-(2-naphthyloxy) monooctyl ester etc.In order to obtain the adhesive layer that specific refractory power is high, preferably coordinate at least more than one (methyl) acrylate monomer containing aryl.
By using these containing (methyl) acrylate monomers of aryl be that alkyl carbon atoms number is that (methyl) alkyl acrylate monomer of C1～C14 is mixed as the monomer of main component, can make the specific refractory power of obtained adhesive layer improve and adjust, reduce the refringence between optics, reduce total reflection, can improve thus total light transmittance.
In addition, in adhesive layer of the present invention, the main component forming with respect to combination aforementioned (A) and aforementioned (B) i.e. (methyl) acrylate monomer 100 weight parts, and preferably (B) is 5～30 weight parts containing the content of (methyl) acrylate monomer of aryl.
As nitrogenous vinyl monomer, for example, can enumerate the ring-type nitrogen vinyl compounds such as NVP, N-caprolactam, (methyl) acryloyl morpholine; N-ethyl-N-methyl (methyl) acrylamide, N-methyl-N-propyl group (methyl) acrylamide, N-methyl-N-isopropyl propyl group (methyl) acrylamide, N, N-dimethyl (methyl) acrylamide, N, N-diethyl (methyl) acrylamide, N, N-dipropyl (methyl) acrylamide, N, N-di-isopropyl (methyl) acrylamide, N, the dialkyl group such as N-dibutyl (methyl) acrylamide replace (methyl) acrylamide; (methyl) vinylformic acid N-ethyl-N-methyl ammonia ethyl ester, (methyl) vinylformic acid N-methyl-N-propyl group ammonia ethyl ester, (methyl) vinylformic acid N-methyl-N-isopropyl propyl group ammonia ethyl ester, (methyl) vinylformic acid N, N-dimethylamino methyl esters, (methyl) vinylformic acid N, N-dimethylamino ethyl ester, (methyl) vinylformic acid N, N-dimethylamino propyl ester, (methyl) vinylformic acid N, N-dimethylamino butyl ester, (methyl) vinylformic acid N, N-dipropyl ammonia ethyl ester, (methyl) vinylformic acid N, (methyl) propenoic acid dialkyl ammonia esters such as N-dibutylamine ethyl ester; N-ethyl-N-methyl aminopropyl (methyl) acrylamide, N-methyl-N-propyl group aminopropyl (methyl) acrylamide, N-methyl-N-isopropyl propyl group aminopropyl (methyl) acrylamide, N, N-dimethyl aminopropyl (methyl) acrylamide, N, N-diethyl amino propyl group (methyl) acrylamide, N, N-dipropyl aminopropyl (methyl) acrylamide, N, N-dimethylaminoethyl (methyl) acrylamide, N, more than at least one in dialkyl group substituted-amino alkyl (methyl) acrylamides such as N-diethyl aminoethyl (methyl) acrylamide etc.
In order to distinguish with the compound of aftermentioned (D), as above-mentioned nitrogenous vinyl monomer, preferably do not contain hydroxyl, more preferably do not contain hydroxyl and carboxyl.As this monomer, preferably above-mentioned illustrative monomer, for example, contains N, N-dialkyl group substituted-amino or N, the acrylic monomer of N-dialkyl group substituted amido; The N-vinyl substituted lactams such as NVP, N-caprolactam; N-(methyl) the N-(methyl such as acryloyl morpholine) acryl substituted cyclic amine.
In addition, in adhesive layer of the present invention, the nitrogenous vinyl monomer that adhesive composition is contained, can give cohesive force and the weather resistance of adhesive layer necessity.In adhesive layer of the present invention, (methyl) acrylate monomer as main component that combination aforementioned (A) with respect to 100 weight parts and aforementioned (B) form, the content of the nitrogenous vinyl monomer containing in preferred binder composition is 5～50 weight parts.
In addition, in adhesive layer of the present invention, the nitrogenous vinyl monomer containing as adhesive composition, particularly preferably use NVP, N, N-dimethyl (methyl) acrylamide, N, N-diethyl (methyl) acrylamide, N, N-dipropyl (methyl) acrylamide, N, N-di-isopropyl (methyl) acrylamide, N, N-dibutyl (methyl) acrylamide, N, N-dimethyl aminopropyl (methyl) acrylamide, N, N-diethyl amino propyl group (methyl) acrylamide, N, N-dimethylaminoethyl (methyl) acrylamide, N-caprolactam etc.
As the copolymerization sex ethylene base monomer (monomer that contains carboxyl) that contains carboxyl, for example can enumerate (methyl) vinylformic acid, (methyl) vinylformic acid carboxylic ethyl ester, (methyl) vinylformic acid carboxylic pentyl ester, 2-(methyl) acryloxy ethyl hexahydrophthalic acid, 2-(methyl) acryloxy propyl group hexahydrophthalic acid, 2-(methyl) acryloxy ethyl phthalic acid, 2-(methyl) acryloxy ethyl succsinic acid, 2-(methyl) acryloxy ethyl toxilic acid, carboxyl polycaprolactone list (methyl) acrylate, 2-(methyl) more than at least one in acryloxy ethyl tetrahydrophthalic acid etc.
In addition, in adhesive layer of the present invention, the contained carboxylic monomer of adhesive composition can be given the cohesive force of adhesive layer necessity.In adhesive layer of the present invention, (methyl) acrylate monomer as main component that combination aforementioned (A) with respect to 100 weight parts and aforementioned (B) form, the content of the carboxylic monomer containing in preferred binder composition is 0.1～5 weight part.
As the copolymerization sex ethylene base monomer (monomer of hydroxyl) of hydroxyl, for example can enumerate (methyl) vinylformic acid hydroxyalkyl acrylate classes such as (methyl) vinylformic acid 8-hydroxyl monooctyl ester, the own ester of (methyl) vinylformic acid 6-hydroxyl, (methyl) vinylformic acid 4-hydroxyl butyl ester, (methyl) Hydroxyethyl Acrylate, more than at least one in (methyl) acrylic amide of the hydroxyls such as N-hydroxyl (methyl) acrylamide, N-methylol (methyl) acrylamide, N-hydroxyethyl (methyl) acrylamide etc.
In addition, in adhesive layer of the present invention, the monomer of the contained hydroxyl of adhesive composition, can use as the copolymerization monomer for reducing carboxylic monomer content, described carboxylic monomer exerts an influence the corrosion-prone corrodibility by adherend such as the ITO surface of obtained adhesive layer to transparent and electrically conductive film.Therefore, the monomer of hydroxyl can contribute to improve the cohesive force of adhesive layer and reduce corrodibility.In adhesive layer of the present invention, (methyl) acrylate monomer as main component that combination aforementioned (A) with respect to 100 weight parts and aforementioned (B) form, the content of the monomer of the hydroxyl containing in preferred binder composition is 0.1～5 weight part.
For the multipolymer of the adhesive composition for adhesive layer of the present invention, preferably make following monomer mixture copolymerization form, described monomer mixture is: with respect to (methyl) acrylate monomer as main component of 100 weight parts, at least one above monomer mixture forming in more than one in (C) nitrogenous vinyl monomer of cooperation 5～50 weight parts and (D) carboxylic copolymerization sex ethylene base monomer of 0.1～5 weight part and/or the copolymerization sex ethylene base monomer of hydroxyl, wherein, more than more than at least one in (methyl) alkyl acrylate monomer that described (A) alkyl carbon atoms number that contains 70～95 weight parts as (methyl) acrylate monomer of main component is C1～C14 containing at least one in (methyl) acrylate monomer of aryl with (B) of 5～30 weight parts.
In addition, (methyl) acrylate monomer as main component that combination aforementioned (A) with respect to 100 weight parts and aforementioned (B) form, (E) fusing point that preferably contains 0.1～5.0 weight part is the ionic compound of 30～50 DEG C and (F) linking agent of 0.01～5 weight part.
In addition, (methyl) acrylate monomer as main component that combination aforementioned (A) with respect to 100 weight parts and aforementioned (B) form, the content of more than one in preferred carboxylic copolymerization sex ethylene base monomer is that more than one the content in the copolymerization sex ethylene base monomer of the following and/or hydroxyl of 2.0 weight parts is below 5.0 weight parts.
To the polymerization process of multipolymer, there is no particular limitation, can use the suitable known polymerization process such as solution polymerization process, emulsion polymerization.The weight-average molecular weight of multipolymer is preferably 200,000～2,000,000.
Above-mentioned multipolymer is preferably acrylic polymers, preferably contains acrylic monomer 50～100 % by weight such as (methyl) acrylate monomer or (methyl) vinylformic acid, (methyl) acrylic amide.
In above-mentioned adhesive composition, by above-mentioned multipolymer being coordinated to linking agent, suitable any additive, can adjust the characteristics such as required physical properties.
As linking agent, for example, can enumerate biuret modified body or the isocyanurate-modified body of the diisocyanates such as hexamethylene diisocyanate, isophorone diisocyanate, '-diphenylmethane diisocyanate, tolylene diisocyanate, xylylene vulcabond; Polyisocyanate compounds with affixture of the polyvalent alcohol more than trivalent such as TriMethylolPropane(TMP) or glycerine etc.; Metal species inner complex; More than at least one in epoxy compounds etc.In addition, also can binding agent be cross-linked by photo-crosslinkings such as ultraviolet rays.
In the situation that making crosslinking copolymers with linking agent, preferred copolymer has can carry out with linking agent functional group's (can select hydroxyl or carboxyl etc. according to the kind of linking agent) of crosslinking reaction, and preferably contains the monomer at side chain with these functional groups.In addition, preferred binder composition contains 0.01～5 weight part (F) linking agent.In addition, the benchmark of weight part is identical to (D) with (A) in above-mentioned multipolymer.
Adhesive composition of the present invention, in order to give its static resistance, preferably contains static inhibitor.For static inhibitor, for example, under normal temperature (30 DEG C), be preferably solid.More specifically, static inhibitor is that fusing point is the ionic compound of 30～50 DEG C.Static inhibitor can be the quaternary ionic compound that contains acryl.
Because the fusing point of these static inhibitor is low and have the cause of chain alkyl, infer that the affinity of they and acrylic polymers is high.
It is the static inhibitor of the ionic compound of 30～50 DEG C as fusing point, be the ionic compound with positively charged ion and negatively charged ion, can enumerate: positively charged ion is the compound of the cationic nitrogenous of pyridylium, glyoxaline cation, pyrimidine positively charged ion, pyrazoles positively charged ion, pyrroles's positively charged ion, ammonium positively charged ion etc. or phosphorus positively charged ion, sulphur positively charged ion etc.; Negatively charged ion is hexafluoro-phosphate radical (PF 6 -), thiocyanate ion (SCN -), benzene sulfonamide acid group (RC 6h 4sO 3 -), perchlorate (ClO 4 -), tetrafluoroborate (BF 4 -) etc. the compound of inorganic or organic anion.By the selection of the chain length to alkyl or substituent position, number etc., can obtain fusing point and be the material of 30～50 DEG C.Preferred cationic is for containing quaternary nitrogen positively charged ion, can enumerate: the season pyridylium, 1 of 1-alkyl pyridine (it can be also not replace that the carbon atom of 2～6 both can have substituting group) etc., the quaternary ammonium cation of season glyoxaline cation, the tetra-allkylammonium etc. of 3-dialkylimidazolium (it can be also not replace that the carbon atom of 2,4,5 both can have substituting group) etc. etc.
As the aforementioned quaternary ionic compound that contains acryl, be the ionic compound with positively charged ion and negatively charged ion, can enumerate: positively charged ion is (methyl) acryloxyalkyl trialkyl ammonium (R 3n +-C nh 2n-OCOCQ=CH 2, wherein, Q=H or CH 3, R=alkyl) etc. the quaternary ammonium that contains (methyl) acryl; Negatively charged ion is hexafluoro-phosphate radical (PF 6 -), thiocyanate ion (SCN -), organic sulfonic acid root (RSO 3 -), perchlorate (ClO 4 -), tetrafluoroborate (BF 4 -), the imide root (R that contains F f 2n -) etc. the compound of inorganic or organic anion.As the imide root (R that contains F f 2n -) R f, can enumerate perfluoroalkyl group sulfonyl, the fluorosulfonyl of trifyl, five fluorine ethylsulfonyls etc.As the imide root that contains F, can enumerate two (fluorosulfonyl) imide root ((FSO 2) 2n -), two (trifyl) imide root ((CF 3sO 2) 2n -), two (five fluorine ethylsulfonyls) imide root ((C 2f 5sO 2) 2n -) etc. two alkylsulfonyl imide roots.
It is the not special restriction of static inhibitor of the ionic compound of 30～50 DEG C to fusing point.Be the object lesson of the ionic compound of 30～50 DEG C as the fusing point with pyridylium, can enumerate 1-octyl group pyridine dodecylbenzene sulfonate, 1-dodecyl pyridine thiocyanate-, 3-methyl isophthalic acid-dodecyl pyridine hexafluorophosphate, 1-dodecyl pyridine dodecylbenzene sulfonate, 4-methyl isophthalic acid-octyl group pyridine hexafluorophosphate etc.
In addition, as the object lesson of the aforementioned quaternary ionic compound that contains acryl, can enumerate (methyl) vinylformic acid dimethylamino methyl esters phosphofluoric acid methyl salt ((CH 3) 3n +cH 2oCOCQ=CH 2pF 6 -, wherein, Q=H or CH 3), two (trifyl) imide methyl salt ((CH of (methyl) dimethylaminoethyl acrylate 3) 3n +(CH 2) 2oCOCQ=CH 2(CF 3sO 2) 2n -, wherein, Q=H or CH 3), two (fluorosulfonyl) imide methyl salt ((CH of (methyl) vinylformic acid dimethylamino methyl esters 3) 3n +cH 2oCOCQ=CH 2(FSO 2) 2n -, wherein, Q=H or CH 3) etc.
In addition, (methyl) acrylate monomer as main component forming with respect to the combination of 100 weight parts aforementioned (A) and aforementioned (B), preferably fusing point is that the content of the ionic compound of 30～50 DEG C is 0.1～5.0 weight part.
As other any composition, can coordinate aptly the known additives such as silane coupling agent, antioxidant, tensio-active agent, curing catalyst, softening agent, weighting agent, crosslinking catalyst, cross-linked inhibitor, curing inhibitors, processing aid, protective agent.These additives can use separately or also use two or more uses.
Adhesive layer of the present invention can be by being coated with after above-mentioned adhesive composition in base material or mold release film, adhesive composition is cross-linked and obtains.
In the situations such as the interlayer laminating for optics, wish that adhesive layer is the adhesive layer of thin thickness, the thickness of preferred aforementioned adhesive layer is 1 μ m～20 μ m.And conventionally the cohesive force of adhesive layer and the thickness of adhesive layer are roughly proportional, but cohesive force when preferred thickness 5 μ m is 3.0(N/25mm) more than.In addition, in the purposes of the higher cohesive force of needs, the cohesive force of preferred adhesive layer of the present invention in the time of thickness 5 μ m is 4.0(N/25mm) more than.In addition, when the thickness of adhesive layer is not in the situation of 5 μ m, " cohesive force when thickness 5 μ m " is (N/25mm) that the thickness of adhesive layer is set as to T(μ m), the cohesive force of adhesive layer is set as to F(N/25mm), and calculate by formula " (cohesive force when thickness 5 μ m)=5F/T ".
Using adhesive layer of the present invention as optical member adhering when for example Polarizer (light polarizing film), wish that adhesive layer is more than above-mentioned lower value to the cohesive force of Polarizer.Conventionally, light polarizing film be the film of the polyvinyl alcohol (PVA) that adsorbed iodine as main body, and the protective layer that is provided with tri acetyl cellulose (TAC), the polyethylene terephthalate (PET) etc. processed through saponification on its surface forms.The cohesive force by adherend of therefore, wishing tri acetyl cellulose (TAC) that adhesive layer of the present invention was processed saponification etc. is more than above-mentioned lower value.
When in the situation for the interlayer laminating of optics etc. by adhesive layer of the present invention, in order to reduce the light reflection on the interface of adhesive layer and optics, wish that refringence is as far as possible little.Therefore, the specific refractory power of above-mentioned adhesive layer is preferably 1.47～1.50.
Preferably making the surface resistivity of the crosslinked adhesive layer forming of aforementioned adhesive composition is 5.0 × 10 + 11below Ω/.In addition, preferably making the static voltage of peeling off of the crosslinked adhesive layer forming of aforementioned adhesive composition is ± 0～0.5kV.In addition, in the present invention, the meaning of so-called " ± 0～0.5kV " refers to " 0～-0.5kV " and " 0～+ 0.5kV ", i.e. " 0.5～+ 0.5kV ".If the large poor performance discharging because of the charged static producing when peeling off of surface resistivity, therefore, by making surface resistivity enough little, can reduce follow occur when being peeled off adhesive layer by adherend static produced peels off static voltage, can suppress by the impact of electric control circuit of adherend etc.
Adhesive film of the present invention can be prepared by forming adhesive layer of the present invention at the one side of base material or mold release film.
As be used to form adhesive layer base material film or protection adhesive surface mold release film (barrier film), can use the resin moldings such as polyester film etc.
For base material film, can be on the face contrary with being formed with adhesive layer one side of resin molding, implement the antifouling processing undertaken by releasing agent or coating-forming agent, the silicon dioxide microparticle etc. of silicone, fluorine class, the antistatic treatment that can implement the coating by static inhibitor or sneak into etc. carried out.
For stripping film, fitting on the face of a side with the adhesive surface of adhesive layer, implement the demoulding processing that releasing agent by silicone, fluorine class etc. carries out.
By the two sides at an adhesive layer fit respectively mold release film enforcement the face of demoulding processing, can form the formation of " mold release film/adhesive layer/mold release film ".In the case, by the mold release film of both sides is peeled off and exposed adhesive surface successively or simultaneously, thereby can with the optical member adherings such as blooming.As blooming, can enumerate light polarizing film, phase retardation film, antireflection film, anti-dazzle (anti-glare) film, ultraviolet-absorbing film, infrared absorbing film, optical compensation films, brightness enhancement film etc.
Adhesive film of the present invention can be used in the laminating of Polarizer and display panel.Can enumerate liquid crystal indicator, organic EL etc. as display panel, but be not limited to these.
In addition, adhesive film of the present invention can be used for various bloomings for peripheral components taking Polarizer as main liquid-crystal display, various bloomings for touch panel, for Electronic Paper in the laminating of various bloomings, the various bloomings of organic EL etc.
In addition, can be at least one side of these bloomings stacked above-mentioned adhesive layer and prepare the blooming with adhesive layer.Particularly, can enumerate the formation of " blooming/adhesive layer/blooming ", " blooming/adhesive layer/mold release film ", " blooming/adhesive layer ", " blooming/adhesive layer/blooming/adhesive layer/blooming ", " blooming/adhesive layer/blooming/adhesive layer/mold release film ", " mold release film/adhesive layer/blooming/adhesive layer/mold release film " etc.
For example; as " blooming/adhesive layer/mold release film "; in the case of having the adhesive layer of being protected by mold release film; expose the adhesive layer as " blooming/adhesive layer " by peeling mold release film off; and fit with other blooming, can obtain by adhesive layer for interlayer laminating as the formation of " blooming/adhesive layer/blooming ".
Embodiment
Illustrate the present invention by embodiment below.
The manufacture > of < acrylic copolymer
[embodiment 1]
Import nitrogen to having in the reaction unit of stirrer, thermometer, reflux exchanger and nitrogen ingress pipe, thereby be nitrogen by the air displacement in reaction unit.Then, in reaction unit, add butyl acrylate 90 weight parts, phenoxyethyl acrylate 10 weight parts, diethyl acrylamide 10 weight parts, vinylformic acid 1.0 weight parts, vinylformic acid 4-hydroxyl butyl ester 1.0 weight parts and solvent (ethyl acetate) 60 weight parts.Then, through within 2 hours, splashing into the Diisopropyl azodicarboxylate as polymerization starter of 0.1 weight part, at 65 DEG C, make its reaction 6 hours, the acrylic acid copolymer soln 1 for embodiment 1 that to have obtained weight-average molecular weight be 500,000.Get a part for acrylic copolymer, as determination of acid value sample described later.
[embodiment 2～5 and comparative example 1～3]
Except having adjusted respectively the composition of each monomer described in (D-2) as (A) of table 1, (B), (C), (D-1), similarly operate with the above-mentioned acrylic acid copolymer soln 1 for embodiment 1, obtained the acrylic acid copolymer soln for embodiment 2～5 and comparative example 1～3.At this, though measurement result is not shown especially, the weight-average molecular weight of the multipolymer containing in the acrylic acid copolymer soln of embodiment 2～5 and comparative example 1～3 is in 200,000～2,000,000 scope.
The preparation > of < adhesive composition, adhesive layer and adhesive film
[embodiment 1]
In as the acrylic acid copolymer soln 1 of the embodiment 1 of above-mentioned manufacture, add the affixture of Coronate L-45(tolylene diisocyanate (TDI) compound of 1-octyl group pyridine dodecylbenzene sulfonate, 0.1 weight part of 1.5 weight parts) and the aluminum chelate (praseodynium aluminium) of 0.1 weight part being uniformly mixed, the adhesive composition of embodiment 1 obtained.This adhesive composition is coated on the stripping film being made up of the polyethylene terephthalate that scribbles silicone resin (PET) film, then at 90 DEG C, be dried and remove solvent.Then,, by implement the ageing treatment of 7 days under 23 DEG C, the environment of 50%RH, obtained the adhesive film on the one side of stripping film with the embodiment 1 that makes the crosslinked adhesive layer forming of adhesive composition.
[embodiment 2～5 and comparative example 1～3]
Except having adjusted respectively the composition of additive as described in (E) of table 1, (F), similarly operate with the adhesive film of above-described embodiment 1, obtain the adhesive film of embodiment 2～5 and comparative example 1～3.
Table 1
In table 1, the numeric representation in bracket with (A) group and (B) the total weight of group be made as 100 weight parts and obtain the numerical value of the weight part of the group of (C) group～(F), using as (C) group～(F) adding proportion of group.
And, in table 2, shown the compound title corresponding with the abbreviation of the each composition using in table 1.At this, Coronate(コ ロ ネ ー ト, registered trademark) L-45 be Nippon Polyurethane Industry Co., Ltd. trade name, the trade name that D-11ON is Mitsui Chemicals, Inc.TDI nail phenylene diisocyanate, XDI refers to xylylene vulcabond.
Table 2
< test method and evaluation >
Peel stripping film (scribbling the PET film of silicone resin) off and expose adhesive layer from the adhesive film of embodiment 1～5 and comparative example 1～3, and adhesive layer is transferred on the one side of Polarizer (film).
The measuring method > of < cohesive force
Adhesive layer is transferred to the one side of the Polarizer (film) of thickness 180 μ m, thereby has obtained the adhesive film (with the blooming of adhesive layer) as sample.
With pressure roller, this adhesive film is fitted on the non-tin face of the soda-lime glass cleaning with acetone.Then, under the condition of 50 DEG C, 0.5MPa × 20 minute, carry out after pressure kettle processing, getting back to the environment of 23 DEG C × 50%RH, the stripping strength of the adhesive film by stretching test machine determination after 1 hour.Measure according to JISZ0237 " adhesive tape, bonding sheet test method ", the stripping strength when speed using 300mm/min is peeled off to 180 ° of directions is as the cohesive force of the adhesive layer of adhesive film.
The test method > of < tack
Measure the adhesive layer of the adhesive film of the sample after cohesive force with Visual Confirmation, and the state coming off with the Polarizer from substrate layer (film), judge its tack.
Zero: adhesive layer does not come off from substrate layer completely.
△ a: part for adhesive layer separates and comes off from substrate layer.
×: adhesive layer comes off and is attached on glass by adherend from substrate layer.
The test method > of < weather resistance
By the adhesive film square 10cm preparing by the method same with the mensuration of cohesive force, use the same method and be fitted on the non-tin face of soda-lime glass, thereby obtained sample.The environment that this sample is placed on to 60 DEG C × 90%RH, after lower 250 hours, is taken out to the environment of 23 DEG C × 50%RH, the state of the adhesive film with visual observation after 1 hour, thus judge weather resistance.
Zero: adhesive film does not completely produce and peels off and foam
△ a: part for adhesive film has produced to be peeled off and foams.
×: the entirety of adhesive film has produced to be peeled off and foams.
The measuring method > of < specific refractory power
The specific refractory power of the adhesive layer at measuring 23 DEG C with Abbe refractometer (manufacturers: ERMA, model: ER-2S).
The measuring method > of < surface resistivity
After aging, before laminating Polarizer, peel stripping film (scribbling the PET film of silicone resin) off and adhesive layer is exposed, adopt resistivity meter (trade name be " Hiresta(Ha イ レ ス タ) UP-HT450 ", Mitsubishi of Co., Ltd. chemical analysis technology (Mitsubishi Chemical Analytech Co., Ltd.) manufacture), measure the surface resistivity of adhesive layer.
Evaluation result is shown in Table 3.In addition, in surface resistivity, represent " m × 10 by " mE+n " + n" (wherein, m is real number arbitrarily, and n is positive integer).
Table 3
In the adhesive film of embodiment 1～5, the cohesive force of the adhesive layer of 5 μ m thickness is more than 4.0N/25mm, and the specific refractory power of adhesive layer, in 1.47～1.50 scope, and has and is enough to bring into play 5.0 × 10 of antistatic property + 11surface resistivity below Ω/, and tack and also excellence of weather resistance., the adhesive film of embodiment 1～5 can meet necessary requirement and overcome problem.
Use the adhesive composition of embodiment 1 and embodiment 3, and to have prepared adhesive layer thickness by identical method be the adhesive film of 3 μ m, 5 μ m, 10 μ m, 15 μ m, 20 μ m, and measured the cohesive force of adhesive layer, the results are shown in table 4.The cohesive force of the adhesive layer of the known adhesive composition that has used embodiment 1 and embodiment 3 is roughly proportional with the thickness of adhesive layer as is well known.
Table 4
Perhaps, the adhesive film of comparative example 1 is because do not have nitrogenous monomer in adhesive composition, a little less than the cohesive force of the adhesive layer of its thickness 5 μ m.In addition, due to (methyl) acrylate monomer not having containing aryl, the specific refractory power of adhesive layer is low.In addition, owing to not containing ionic compound, therefore surface resistivity is high.And tack and weather resistance are also poor.
Perhaps, the adhesive film of comparative example 2 is because the use level of the copolymerization sex ethylene base monomer that contains carboxyl in adhesive composition is too much, a little less than the cohesive force of the adhesive layer of thickness 5 μ m.In addition, due to (methyl) acrylate monomer not having containing aryl, the specific refractory power of adhesive layer is low.In addition, because ionic compound is not that fusing point is the ionic compound of 30～50 DEG C, therefore surface resistivity is slightly high.And sticking power and weather resistance are also poor.
Perhaps, the adhesive film of comparative example 3 is because neither have carboxylic copolymerization sex ethylene base monomer and also do not have the copolymerization sex ethylene base monomer of hydroxyl in adhesive composition, a little less than the cohesive force of the adhesive layer of its thickness 5 μ m.In addition, owing to not containing ionic compound, therefore surface resistivity is high.And tack and weather resistance are also poor.
So, the adhesive film of comparative example 1～3 cannot meet proposed requirement in the past and overcome the problem in the past existing.

Claims (10)

1. an adhesive layer, it is the adhesive layer that adhesive composition is cross-linked form,
Described adhesive composition comprises multipolymer and ionic compound,
Described multipolymer comprises: more than at least one in (methyl) alkyl acrylate monomer that alkyl carbon atoms number is C1～C14; More than containing at least one in (methyl) acrylate monomer of aryl; And other copolymerization monomer,
Described other copolymerization monomer comprises: more than at least one in nitrogenous vinyl monomer; And more than at least one in the copolymerization sex ethylene base monomer of carboxylic copolymerization sex ethylene base monomer and/or hydroxyl,
The thickness of described adhesive layer is 1 μ m～20 μ m, and cohesive force in the time of thickness 5 μ m is more than 3.0N/25mm.
2. adhesive layer as claimed in claim 1, wherein,
Described adhesive composition comprises:
Weight-average molecular weight is 200,000～2,000,000 multipolymer, more than at least one in its (methyl) alkyl acrylate monomer that is C1～C14 with respect to combination 70～95 weight parts (A) alkyl carbon atoms number contain at least one above total 100 weight part that form in (methyl) acrylate monomer of aryl with (B) of 5～30 weight parts, more than at least one in more than one in (C) nitrogenous vinyl monomer of cooperation 5～50 weight parts and (D) carboxylic copolymerization sex ethylene base monomer of 0.1～5 weight part and/or the copolymerization sex ethylene base monomer of hydroxyl obtain monomer mixture, and this monomer mixture copolymerization is formed,
(E) fusing point of 0.1～5.0 weight part is the ionic compound of 30～50 DEG C; And
(F) linking agent of 0.01～5 weight part.
3. adhesive layer as claimed in claim 2, wherein,
In described adhesive composition, at least one in (methyl) alkyl acrylate monomer that is C1～C14 with respect to described (A) alkyl carbon atoms number above and described (B) containing at least one above total 100 weight part in (methyl) acrylate monomer of aryl, more than one in the copolymerization sex ethylene base monomer that contains more than one and/or hydroxyl below 5.0 weight parts in the carboxylic copolymerization sex ethylene base monomer below 2.0 weight parts.
4. the adhesive layer as described in any one in claim 1～3, wherein, the specific refractory power of described adhesive layer is 1.47～1.50.
5. an adhesive film, its one side in mold release film forms the adhesive layer described in any one in claim 1～4 and forms, and has the formation of mold release film/adhesive layer/mold release film.
6. an adhesive film, its adhesive layer described in any one in the stacked requirement 1～4 of having the right on the one side of base material.
7. Polarizer and a display panel laminating film, it has used the adhesive film described in claim 5 or 6.
8. a touch panel film, it has used the adhesive film described in claim 5 or 6.
9. an Electronic Paper film, it has used the adhesive film described in claim 5 or 6.
10. with the blooming of adhesive layer, its adhesive layer described in any one in the stacked requirement 1～4 of having the right at least one face of blooming.
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JP7422641B2 (en) 2020-10-20 2024-01-26 綜研化学株式会社 Adhesive composition and adhesive sheet
JP7014879B2 (en) * 2020-11-12 2022-02-01 藤森工業株式会社 Adhesive composition and adhesive film

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100163166A1 (en) * 2008-12-30 2010-07-01 Eun Hwan Jeong Antistatic adhesive composition, adhesive film using the same, method for producing the adhesive film, and method of fabricating liquid crystal display
CN102119349A (en) * 2008-08-11 2011-07-06 住友化学株式会社 Optical film with adhesive and optical laminate using same

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006293281A (en) 2005-03-17 2006-10-26 Seiko Epson Corp Optical component and projector
JP4800722B2 (en) 2005-09-26 2011-10-26 日東電工株式会社 Optical pressure-sensitive adhesive composition, optical pressure-sensitive adhesive layer, optical member with a pressure-sensitive adhesive layer, method for producing the same, and image display device
JP2009091522A (en) 2007-10-12 2009-04-30 Toyo Ink Mfg Co Ltd Adhesive composition and laminate obtained by using the same
KR101202571B1 (en) * 2008-02-05 2012-11-19 주식회사 엘지화학 Pressure-sensitive adhesive composition, polarizers and liquid crystal display comprising the same
JP5379409B2 (en) * 2008-02-15 2013-12-25 日東電工株式会社 Adhesive composition for optical film, adhesive optical film, and image display device
KR101455302B1 (en) * 2008-09-24 2014-10-27 동우 화인켐 주식회사 Adhesive composition and polarizing plate using the same
KR101344590B1 (en) * 2009-06-18 2013-12-26 닛토덴코 가부시키가이샤 Pressure-sensitive adhesive sheet for optical use
KR101766934B1 (en) * 2010-01-21 2017-08-09 닛폰고세이가가쿠고교 가부시키가이샤 Adhesive agent, adhesive agent for optical member, optical member having adhesive layer attached thereto, image display device, active-energy-ray-and/or heat-curable adhesive agent composition, and adhesive agent composition
JP5524640B2 (en) 2010-01-26 2014-06-18 大王製紙株式会社 Adhesive sheet
JP5544954B2 (en) * 2010-03-18 2014-07-09 サイデン化学株式会社 Optical pressure-sensitive adhesive composition
JP5800469B2 (en) * 2010-05-27 2015-10-28 綜研化学株式会社 Adhesive composition for optical member and adhesive sheet
JP2012021148A (en) 2010-06-16 2012-02-02 Nippon Synthetic Chem Ind Co Ltd:The Pressure-sensitive adhesive, pressure-sensitive adhesive for optical member, optical member with pressure-sensitive adhesive layer and image display device
WO2012050049A1 (en) * 2010-10-12 2012-04-19 日本合成化学工業株式会社 Adhesive composition for optical components, adhesive for optical components, optical component with adhesive layer, and image display device
JP5583048B2 (en) 2011-02-14 2014-09-03 リンテック株式会社 Optical pressure-sensitive adhesive composition, optical pressure-sensitive adhesive layer, and optical pressure-sensitive adhesive laminate
JP5614328B2 (en) 2011-02-25 2014-10-29 藤倉化成株式会社 Adhesive composition, adhesive film, and optical component
JP5842439B2 (en) * 2011-03-10 2016-01-13 住友化学株式会社 Optical film with adhesive and optical laminate using the same
JP5760571B2 (en) 2011-03-24 2015-08-12 Dic株式会社 Colored adhesive tape for fixing polarizing film
JP5887066B2 (en) * 2011-05-17 2016-03-16 綜研化学株式会社 Adhesive composition for optical member and processed product thereof
JP5821309B2 (en) * 2011-06-14 2015-11-24 住友化学株式会社 Light diffusing adhesive sheet, polarizing plate and liquid crystal display panel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102119349A (en) * 2008-08-11 2011-07-06 住友化学株式会社 Optical film with adhesive and optical laminate using same
US20100163166A1 (en) * 2008-12-30 2010-07-01 Eun Hwan Jeong Antistatic adhesive composition, adhesive film using the same, method for producing the adhesive film, and method of fabricating liquid crystal display

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106189943A (en) * 2014-08-06 2016-12-07 藤森工业株式会社 Adhesive composition and adhesive film
CN106189942A (en) * 2014-08-06 2016-12-07 藤森工业株式会社 Adhesive composition and adhesive film
CN106189942B (en) * 2014-08-06 2018-11-20 藤森工业株式会社 adhesive composition and adhesive film
CN106189943B (en) * 2014-08-06 2020-02-11 藤森工业株式会社 Adhesive composition and adhesive film
CN115584226A (en) * 2015-06-08 2023-01-10 藤森工业株式会社 Adhesive composition for optical film, adhesive layer for optical film, and adhesive film for optical film
CN110383121A (en) * 2017-03-29 2019-10-25 日东电工株式会社 Unilateral protection polarizing coating, image display device and its method for continuous production with adhesive phase
CN108611032A (en) * 2018-05-16 2018-10-02 爱尔美（北京）生物科技有限公司 A kind of novel environment-friendly water-based first piece binder and preparation method thereof
CN112341959A (en) * 2019-08-08 2021-02-09 Dic株式会社 Adhesive composition, adhesive layer and adhesive film
CN112341959B (en) * 2019-08-08 2024-01-05 Dic株式会社 Adhesive composition, adhesive layer, and adhesive film

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JP2014136753A (en) 2014-07-28

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