CN104140775B - Transparent pressure-sensitive adhesive sheet composition - Google Patents
Transparent pressure-sensitive adhesive sheet composition Download PDFInfo
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- CN104140775B CN104140775B CN201410192772.XA CN201410192772A CN104140775B CN 104140775 B CN104140775 B CN 104140775B CN 201410192772 A CN201410192772 A CN 201410192772A CN 104140775 B CN104140775 B CN 104140775B
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- methyl
- adhesive sheet
- sensitive adhesive
- transparent pressure
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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
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/062—Copolymers with monomers not covered by C09J133/06
- C09J133/066—Copolymers with monomers not covered by C09J133/06 containing -OH groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/02—Polyalkylene oxides
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2551/00—Optical elements
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention provides a kind of transparent pressure-sensitive adhesive sheet composition, the curability of the transparent pressure-sensitive adhesive sheet composition is excellent, even if gained transparent pressure-sensitive adhesive sheet for the conductive layer surface of nesa coating directly fit also will not etching conductive layer, to metal line, print frame difference in height tracing ability and the transparency it is also excellent.The present invention relates to a kind of transparent pressure-sensitive adhesive sheet composition, it is included in terms of solid constituent ratio：(A) the mass % of (methyl) acrylic resin 65~85, the mass % of (B) polyoxy sub alkyl polylol 10~30, the mass % of (C) polyisocyanates 1.0~5.0 and the mass % of (D) tin series catalysts 0.005~0.1, the acid number of the transparent pressure-sensitive adhesive sheet composition is 0~5mgKOH/g, wherein, (A) weight average molecular weight of (methyl) acrylic resin is 100,000~600,000, and the number-average molecular weight of (B) polyoxy sub alkyl polylol is 500~1500.
Description
Technical field
The transparent pressure-sensitive adhesive sheet that is formed the present invention relates to transparent pressure-sensitive adhesive sheet with composition, by transparent pressure-sensitive adhesive sheet with composition, with
Transparent pressure-sensitive adhesive sheet is used for the nesa coating fixation transparent pressure-sensitive adhesive sheet that is characterized of laminating of nesa coating and with will be transparent
Conducting film fixation is adhered to the layered product that the conductive layer surface of nesa coating is characterized with transparent pressure-sensitive adhesive sheet.
Background technology
In recent years, start to load touch panel in portable phone, game machine etc..Touch panel is with transparent using optics
Bonding sheet is by transparent base of the top layer with nesa coatings such as silver, ITO (tin indium oxide), glass and for protecting the transparent of its
The layered product of the optical component laminating of the display device such as screening glass and liquid crystal display etc.
Touch panel is mainly had the touch panel of the resistive film type detected using pressure when inputting and utilizes input
When the electrostatic detection input site from human body capacitor type (capacitive type) touch panel.Capacitor type touch
Touch in panel, the conductive layer surface of nesa coating is fixed in the way of the adhesive layer surface with bonding sheet is contacted.Therefore,
In the presence of the oxidation reaction for making metal ingredient occurs in nesa coating due to the sour composition contained in adhesive, cause conductive work(
The problem of reducing.Accordingly, it would be desirable to be practically free of sour composition, with higher preventing metal corrosion and good cementability
Nesa coating fixation bonding sheet.
It is used as the bonding sheet with preventing metal corrosion, it is proposed that bonding sheet (such as patent containing preventing metal corrosion agent
Document 1).In addition, it is proposed that contain the nitrogen atom composition of specified quantitative by the sour composition relative to adhesive phase, so as to reduce
For corrosive bonding sheet (such as patent document 2) of nesa coating.
But, the bonding sheet containing preventing metal corrosion agent is present when carrying out endurancing due to preventing metal corrosion agent
Discoloration, so that the problems such as optical characteristics is reduced.In addition, the bonding sheet of the nitrogen atom composition containing specified quantitative is due to adhesive
The problem of resistance value that the sour composition that contains in layer and existing can not fully suppress ITO is raised.
On the other hand, metal line, the component with differences in height such as printing height differences are included in touch panel etc. sometimes.Example
Touch panel with the component for being applied with frame-shaped printing etc. is used in such as portable phone.In this purposes, for
Bonding sheet, also requires to fill the performance of difference in height while requiring and pasting the performance of fixing component, requires excellent height
Poor tracing ability.When transparent pressure-sensitive adhesive sheet can not absorb difference in height, transparent pressure-sensitive adhesive sheet is produced on the periphery of difference in height from the floating of adherend
Rise in (bubble, space), it is possible to because this floats the visual drop of the reflection loss of (bubble, space) generation light and liquid crystal display
It is low.
In order to obtain excellent difference in height tracing ability, transparent pressure-sensitive adhesive sheet is soft and bonding force height is favourable, but from
The reasons why first recording considers, it is desirable to also have high adhesiveness even if without sour composition.Tackle in the requirement, disclose：Comprising with
Alkoxyalkyl acrylate as principal monomer and the specified molecular weight without sour composition acrylic polymer and crosslinking
The adhesive composition of agent provides the technical scheme for the transparent pressure-sensitive adhesive sheet that can take into account good cementability and preventing metal corrosion
(such as patent document 3).
However, including third of the specified molecular weight using alkoxyalkyl acrylate as principal monomer and without sour composition
Due to there are following problems without sour composition in the adhesive composition of alkene acids polymers and crosslinking agent：Handed over using isocyanates
Join solidification slack-off, transparent pressure-sensitive adhesive sheet the curing consuming time that agent is carried out.In order to solve this problem, also disclose addition and contain
The technical scheme of the amine compound of multiple hydroxyls, but amine compound exist make transparent pressure-sensitive adhesive sheet through when xanthochromia possibility.
In a word, present situation is not obtain also taking into account preventing metal corrosion, difference in height tracing ability, the transparency, solidification with high level
The excellent transparent pressure-sensitive adhesive sheet composition of the complete characteristics such as property.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2006-45315 publications
Patent document 2：Japanese Unexamined Patent Publication 2010-144002 publications
Patent document 3：Japanese Unexamined Patent Publication 2010-77287 publications
The content of the invention
Problems to be solved by the invention
The problem to be solved in the present invention be it is excellent there is provided curability, even if resulting transparent pressure-sensitive adhesive sheet is for transparent
The conductive layer surface of conducting film directly fit also will not etching conductive layer, to metal line, print frame difference in height tracing ability and
Transparent also excellent transparent pressure-sensitive adhesive sheet composition.
The solution used to solve the problem
The present inventor etc. have been repeated deeply using touch panel with the foregoing problems present in transparent pressure-sensitive adhesive sheet as background
Ground is studied, and is as a result found：With (methyl) acrylic resin of specific part by weight comprising specific weight average molecular weight, certain number
The solidification of the transparent pressure-sensitive adhesive sheet composition of the polyoxy sub alkyl polylol of average molecular weight, polyisocyanates and tin series catalysts
Property excellent, the transparency, cohesive, the preventing metal corrosion of nesa coating and the difference in height tracing ability of gained transparent pressure-sensitive adhesive sheet
Well, the present invention is completed based on the opinion.
The present invention is as shown in following (1)~(9).
(1) a kind of transparent pressure-sensitive adhesive sheet composition, it is included in terms of solid constituent ratio：(A) (methyl) acrylic resin
65~85 mass %, the mass % of (B) polyoxy sub alkyl polylol 10~30, the mass % of (C) polyisocyanates 1.0~5.0 and
(D) the mass % of tin series catalysts 0.005~0.1, the acid number of the transparent pressure-sensitive adhesive sheet composition is 0~5mgKOH/g, wherein,
(A) weight average molecular weight of (methyl) acrylic resin is 100,000~600,000, and the equal molecule of number of (B) polyoxy sub alkyl polylol
Measure as 500~1500.
(2) the transparent pressure-sensitive adhesive sheet composition according to foregoing (1), wherein, (A) (methyl) acrylic resin is included
The construction unit of 0.5~10mol% (methyl) acrylic monomer from hydroxyl.
(3) the transparent pressure-sensitive adhesive sheet composition according to foregoing (2), it is characterised in that (methyl) of foregoing hydroxyl
Acrylic monomer is (methyl) acrylic acid 2- hydroxy methacrylates.
(4) the transparent pressure-sensitive adhesive sheet composition according to any one of foregoing (1)~(3), wherein, foregoing (A) (first
Base) acrylic resin includes the 5~50mol% construction unit from (methyl) methyl acrylate.
(5) the transparent pressure-sensitive adhesive sheet composition according to any one of foregoing (1)~(4), wherein, foregoing (A) (first
Base) acrylic resin glass transition temperature be -80~0 DEG C.
(6) a kind of transparent pressure-sensitive adhesive sheet, it is to make the transparent pressure-sensitive adhesive sheet composition any one of foregoing (1)~(5)
Obtained from solidification.
(7) transparent pressure-sensitive adhesive sheet according to foregoing (6), its gel fraction is 40%~80%.
(8) a kind of nesa coating fixation transparent pressure-sensitive adhesive sheet, it is characterised in that will be transparent described in foregoing (6) or (7)
Bonding sheet is used for the laminating of nesa coating.
(9) a kind of layered product, it is characterised in that the nesa coating fixation transparent pressure-sensitive adhesive sheet described in wherein foregoing (8)
It is adhered to the conductive layer surface of nesa coating.
The effect of invention
The transparent pressure-sensitive adhesive sheet composition of the present invention by having specific construction unit, i.e. poly (oxyalkylene) in the composition
Base skeleton, the difference in height tracing ability of gained transparent pressure-sensitive adhesive sheet and the bonding force to base material become good.And then, by containing (D)
Tin series catalysts, the curability of (C) polyisocyanates becomes good, additionally it is possible to shorten the curing time of transparent pressure-sensitive adhesive sheet.In addition,
Because the transparent pressure-sensitive adhesive sheet of the present invention with composition is substantially free of acid, so can suppress caused by sour composition transparent leads
The corrosion of the conductive layer surface of electrolemma.
Embodiment
The present invention is described in detail below.
It should be noted that (methyl) acryloyl group refers to CH in this specification2=CH-CO- or CH2=C (CH3)-
CO-。
(transparent pressure-sensitive adhesive sheet composition)
The transparent pressure-sensitive adhesive sheet of the present invention is following transparent pressure-sensitive adhesive sheet composition with composition：It is in terms of solid constituent ratio
Comprising：(A) the mass % of (methyl) acrylic resin 65~85, the mass % of (B) polyoxy sub alkyl polylol 10~30, (C) are more
The mass % of isocyanates 1.0~5.0 and mass % of (D) tin series catalysts 0.005~0.1, the transparent pressure-sensitive adhesive sheet composition
Acid number be 0~5mgKOH/g, wherein, the weight average molecular weight of (A) (methyl) acrylic resin is 100,000~600,000, and (B)
The number-average molecular weight of polyoxy sub alkyl polylol is 500~1500.
((A) (methyl) acrylic resin)
In the present invention, (A) (methyl) acrylic resin refers to, relative to from composition (methyl) acrylic resin
Monomer entire infrastructure unit, comprising more than 50mol% be derived from (methyl) acryloyl group monomer construction unit
Resin, preferably this construction unit be more than 70mol%, more preferably more than 90mol%.In addition, as in the present invention
(A) (methyl) acrylic monomer used in the polymerization of (methyl) acrylic resin (has the list of (methyl) acryloyl group
Body), it is not particularly limited, preferably without carboxyl (chemical formula：-COOH).Use (methyl) acrylic monomer containing carboxyl
When, in (A) (methyl) acrylic resin, the construction unit from (methyl) acrylic monomer containing carboxyl is preferably
Below 0.5mol%, more preferably below 0.1mol%.As the example of (methyl) acrylic monomer, it can enumerate (methyl)
Methyl acrylate, (methyl) ethyl acrylate, (methyl) n-propyl, (methyl) isopropyl acrylate, (methyl) propylene
Sour N-butyl, (methyl) tert-butyl acrylate, (methyl) isobutyl acrylate, (methyl) the just own ester of acrylic acid, (methyl) propylene
Sour 2- ethylhexyls, (methyl) Isooctyl acrylate monomer, (methyl) lauryl acrylate, (methyl) isodecyl acrylate, (methyl)
(methyl) alkyl acrylates such as stearyl acrylate ester, (methyl) tridecyl acrylate, the different stearyl ester of (methyl) acrylic acid；
(methyl) cyclohexyl acrylate, (methyl) acrylic acid norborneol ester, (methyl) isobornyl acrylate, (methyl) acrylic acid drop ice
Piece Arrcostab, (methyl) acrylic acid dicyclopentenyloxyethyl methacrylate, the bicyclic amylene epoxide ethyl ester of (methyl) acrylic acid, (methyl) acrylic acid are bicyclic
(methyl) propylene such as pentyl ester, (methyl) acrylic acid Bicvclopentyl 2-ethoxyethyl acetate, tristane dihydroxymethyl two (methyl) acrylate
Sour cyclic alkyl ester；(methyl) methoxyethyl acrylate, (methyl) ethoxyethyl acrylate, (methyl) acrylate, butoxy
(methyl) third such as ethyl ester, (methyl) acrylic acid 2- methoxyethoxyethyl acrylates, (methyl) acrylic acid 2- ethoxy ethoxyethyl acrylates
Olefin(e) acid alkoxy alkyl；Methoxyl group diethylene glycol (methyl) acrylate, ethoxydiglycol (methyl) acrylate, first
Epoxide DPG (methyl) acrylate etc. alkoxy (poly-) aklylene glycol (methyl) acrylate；(methyl) acrylic acid eight
Fluorine pentyl ester etc. (methyl) fluoroalkyl acrylate；(methyl) acrylic acid N, N- dimethylamino ethyl ester, (methyl) acrylic acid N,
N- diethylamino ethyl esters etc. (methyl) propenoic acid dialkyl aminoalkyl ester；(methyl) acrylamide, diacetone (methyl) third
The amide-containings such as acrylamide (methyl) acrylate；(methyl) glycidyl acrylate etc. contains epoxy radicals (methyl) acrylic acid
Ester；Organic-silicon-modified (methyl) acrylate, polyethylene glycol two (methyl) acrylate, diethylene glycol two (methyl) acrylic acid
Ester, neopentyl glycol two (methyl) acrylate, triethylene glycol two (methyl) acrylate, tripropylene glycol two (methyl) acrylic acid
Multi-functional (methyl) acrylate such as ester etc..They can be used alone, and can also combine two or more to use.
In view of (A) (methyl) acrylic resin with the compatibility of (B) polyoxy sub alkyl polylol, i.e. by transparent adhesion
Obtained from piece composition solidifies during the transparency of adhesive phase, relative to from composition (A) (methyl) acrylic resin
Monomer entire infrastructure unit, the content of the construction unit from methyl acrylate and/or methyl methacrylate is preferably 5
~50mol%, more preferably 10~45mol%, more preferably 15~40mol%.From methyl acrylate and/or methyl
When the content of the construction unit of methyl acrylate is less than 5mol%, there is inclining for variation with the compatibility of polyoxy sub alkyl polylol
To during more than 50mol%, the bonding force of transparent pressure-sensitive adhesive sheet has the tendency of to diminish.It should be noted that from methyl acrylate
And/or the content of the construction unit of methyl methacrylate refers to the structure list from methyl acrylate and methyl methacrylate
The total amount of member.
In addition, from via polyisocyanates and polyoxy sub alkyl polylol reaction and it is integrated from the viewpoint of, the present invention
In (A) (methyl) acrylic resin preferably comprise (methyl) acrylic monomer of hydroxyl as copolymer composition.As
The example of (methyl) acrylic monomer of hydroxyl, can enumerate (methyl) acrylic acid 2- hydroxy methacrylates, (methyl) acrylic acid
2- hydroxy propyl esters, (methyl) acrylic acid 4- hydroxybutyls, (methyl) acrylic acid 1,3 butylene glycol ester, (methyl) acrylic acid 1,4- fourths
(methyl) third of the hydroxyls such as diol ester, (methyl) acrylic acid 1,6-HD ester, (methyl) acrylic acid 3- methyl pentanediol esters
Olefin(e) acid ester etc..Wherein, from the aspect of the copolymerizable with other monomers, reactivity, preferred (methyl) acrylic acid 2- hydroxyl second
Ester.Relative to the entire infrastructure unit from the monomer for constituting (A) (methyl) acrylic resin, (methyl) from hydroxyl
The construction unit of acrylic monomer preferably comprises 0.5~10mol%, more preferably comprising 0.6~8mol%, further preferably bag
Containing 0.7~5mol%.When the content of the construction unit of (methyl) acrylic monomer from hydroxyl is less than 0.5mol%, have
The tendency that reaction with polyoxy sub alkyl polylol tails off, the cohesive force of gained transparent pressure-sensitive adhesive sheet diminishes, during more than 10mol%,
Because crosslink density becomes too high, it is hardened so there is gained transparent pressure-sensitive adhesive sheet.
In addition, in the range of polymerism is not destroyed, (A) (methyl) acrylic resin in the present invention can use it
He is used as copolymer composition by polymerizable monomer.As the example of such polymerizable monomer, acrylonitrile, metering system can be enumerated
Nitrile, styrene, α-methylstyrene, vinyl acetate, propionate, stearic acid vinyl ester, vinyl chloride, vinylidene chloride,
Alkyl vinyl ether, vinyltoluene, vinylpyridine, vinyl pyrrolidone, Dialkyl itaconates, fumaric acid dialkyl group
Ester, allyl alcohol, acryloyl chloride, methyl vinyl ketone, N acrylamide methyl trimethoxy ammonium chloride, pi-allyl trimethyl ammonia chloride
Ammonium, dimethyl-allyl vinyl ketone etc..
The weight average molecular weight of (A) (methyl) acrylic resin in the present invention is necessary for 100,000~600,000, preferably 15
Ten thousand~500,000, more preferably 200,000~400,000.(A) when the weight average molecular weight of (methyl) acrylic resin is less than 100,000, gained
The cohesive force of transparent pressure-sensitive adhesive sheet diminishes, and it is not preferable.On the other hand, when weight average molecular weight is more than 600,000, (A) (methyl) acrylic acid
The compatibility poor of resinoid and (B) polyoxy sub alkyl polylol, the transparency variation of gained transparent pressure-sensitive adhesive sheet.
Herein, weight average molecular weight is that (Showa Denko K. K manufactures, Shodex (registrations using gel permeation chromatography
Trade mark) GPC-101) determine at normal temperatures under the following conditions and so that polystyrene converts and calculates.
Post：Showa Denko K. K's manufacture, Shodex (registration mark) LF-804
Column temperature：40℃
Sample：The 0.2 mass % tetrahydrofuran solutions of (methyl) acrylic resin
Flow：1ml/ minutes
Eluent：Tetrahydrofuran
Detector：RI detectors
In addition, the glass transition temperature (Tg) of (A) (methyl) acrylic resin in the present invention is preferably -80~0
DEG C, more preferably -70~-5 DEG C, more preferably -60~-10 DEG C.When Tg is higher than 0 DEG C, transparent pressure-sensitive adhesive sheet is hardened, therefore has
The tendency that difference in height tracing ability is deteriorated.On the other hand, when Tg is less than -80 DEG C, cohesive force diminishes, the intensity of transparent pressure-sensitive adhesive sheet becomes
Obtain insufficient tendency.It should be noted that what the Tg of (A) (methyl) acrylic resin can be used by changing in polymerization
The species of monomer component, ratio of components are suitably adjusted.
Herein, Tg refers to the value obtained by following methods.10mg sample is gathered by (A) (methyl) acrylic resin,
Using differential scanning calorimetry (DSC) (DSC), temperature is set to be changed to 200 DEG C from -80 DEG C with 10 DEG C/min of programming rate, it is poor to carry out
Show scanning calorimetry, regard the heat absorption initial temperature produced by glass transition as Tg.It should be noted that it was observed that 2
In the case of above Tg, arithmetic mean of instantaneous values of these Tg under absolute temperature is taken as Tg.
The polymerization of (A) (methyl) acrylic resin in the present invention is not particularly limited, solution can be used
Method known to polymerization, emulsion polymerization, polymerisation in bulk, suspension polymerisation, alternating copolymerization etc..Wherein, from the transparency, water resistance etc.
From the aspect of, particularly preferred polymerisation in solution.In addition, gained copolymer is random copolymer, block copolymer etc..
The polymerization initiator used during to (A) (methyl) acrylic resin being polymerize is not particularly limited, can be from public affairs
It is appropriate in the polymerization initiator known to select to use.For example, it is preferable to exemplify 2,2 '-azo double (isobutyronitrile), 2,2 '-azo are double
(4- methoxyl group -2,4- methyl pentane nitriles), 2,2 '-azo double (2,4- methyl pentane nitriles), double (the 2- methyl fourths of 2,2 '-azo
Nitrile), 1,1 '-azo double (hexamethylene -1- formonitrile HCNs), 2,2 '-azo double (2,4,4- trimethylpentanes), dimethyl -2,2 '-azo
Azo system polymerization initiators such as double (2 Methylpropionic acid esters)；Benzoyl peroxide, TBHP, the tertiary fourth of peroxidating two
Double (tert-butyl peroxide) the 3,3,5- trimethyl-cyclohexanes of base, tert butyl peroxy benzoate, dicumyl peroxide, 1,1-,
The oil-soluble polymerization initiators such as the peroxide system polymerization initiators such as double (tert-butyl peroxide) cyclododecanes of 1,1-.These polymerizations
Initiator can be used alone, or combine two or more to use.The consumption of polymerization initiator is common consumption, example
Such as, relative to 100 mass parts monomers, it can be selected in the range of 0.01~5 mass parts or so, preferably 0.015~4 mass
The scope of part, more preferably 0.02~3 mass parts.
It should be noted that various common solvents can be used in polymerisation in solution.As this solvent, second can be included
The esters such as acetoacetic ester, n-propyl acetate, n-butyl acetate；Toluene, benzene etc. are aromatic hydrocarbon, the aliphatic such as n-hexane, normal heptane
Hydro carbons；The ester ring type hydro carbons such as hexamethylene, hexahydrotoluene；The organic solvents such as the ketones such as MEK, methyl iso-butyl ketone (MIBK).These are molten
Agent may be used singly or in combination of two or m.
In addition, as the compounding amount of (A) (methyl) acrylic resin in the transparent pressure-sensitive adhesive sheet composition of the present invention,
Relative to all solids composition of transparent pressure-sensitive adhesive sheet composition, it is necessary to be 65~85 mass %, preferably 70~85 mass %,
More preferably 75~85 mass %.(A) when the compounding amount of (methyl) acrylic resin is less than 65 mass %, cohesive force diminishes,
The intensity of transparent pressure-sensitive adhesive sheet becomes insufficient.On the other hand, the compounding amount of (A) (methyl) acrylic resin is more than 85 mass %
When, it is impossible to obtain sufficient difference in height tracing ability.
((B) polyoxy sub alkyl polylol)
As (B) polyoxy sub alkyl polylol used in the present invention, as long as the polymer polyatomic alcohol with ehter bond just
It is not particularly limited, can be suitably using known polymer polyatomic alcohol., can as the example of (B) polyoxy sub alkyl polylol
To enumerate polyethylene glycol, polypropylene glycol, polytetramethylene ether diol and their derivative or copolymer etc..Wherein, for easy
The reasons why adjustment is with the compatibility of acrylic resin, preferred polypropylene glycol.They can be used alone, or can also mix
Two or more is closed to use.
The number-average molecular weight of (B) polyoxy sub alkyl polylol used in the present invention is necessary for 500~1500, is preferably
700~1300, more preferably 800~1200.When number-average molecular weight is less than 500, the difference in height tracing ability of transparent pressure-sensitive adhesive sheet is deteriorated,
To be not preferred.On the other hand, when number-average molecular weight is more than 1500, the transparency variation of gained transparent pressure-sensitive adhesive sheet.Need explanation
It is that number-average molecular weight can utilize the Weight-average molecular with (A) (methyl) acrylic resin by GPC (gel permeation chromatography)
Identical method is measured to determine.
In addition, being used as the compounding amount of (B) polyoxy sub alkyl polylol in the transparent pressure-sensitive adhesive sheet composition of the present invention, phase
For all solids composition of transparent pressure-sensitive adhesive sheet composition, it is necessary to be 10~30 mass %, preferably 13~25 mass %, more
Preferably 15~20 mass %.(B) when the compounding amount of polyoxy sub alkyl polylol is less than 10 mass %, it is impossible to obtain transparent adhesion
The sufficient difference in height tracing ability of piece.On the other hand, it is interior when the compounding amount of (B) polyoxy sub alkyl polylol is more than 30 mass %
Poly- power diminishes, and the intensity of transparent pressure-sensitive adhesive sheet becomes insufficient.
((C) polyisocyanates)
As (C) polyisocyanates in the present invention, many isocyanides of fragrant family polyisocyanates, fatty family can be enumerated
Acid esters, ester ring type system polyisocyanates etc..As the example of (C) polyisocyanates, the isocyanide of Isosorbide-5-Nitrae-tetramethylene two can be enumerated
Acid esters, 1,6- hexamethylene diisocyanates (HDI), 2- methyl isophthalic acids, 5- pentane diisocyanates, 3- methyl isophthalic acids, 5- pentanes two
Isocyanates, trimethyl hexamethylene diisocyanate, IPDI, cyclohexyl diisocyanate, toluene two
Isocyanates (TDI), hydrogenated toluene diisocyanate, methyl diphenylene diisocyanate, the isocyanic acid of hydrogenated diphenyl methane two
Ester, many phenylmethane polyisocyanates, XDI, hydrogenated xylene diisocyanate, the methylene of durol two
Diisocyanate, ENB diisocyanate, naphthalene diisocyanate, trimethylolpropane/toluene diisocyanate trimer
The isocyanide urea of addition product, trimethylolpropane/hexamethylene diisocyanate trimer addition product, hexamethylene diisocyanate
The isocyanate addition products such as acid esters body, polyethers polyisocyanates, polyester polyisocyanates etc..They can be used alone, or
Two or more can also be combined to use.
In addition, the compounding amount of (C) polyisocyanates in the transparent pressure-sensitive adhesive sheet composition of the present invention, viscous relative to transparent
Close all solids composition of piece composition, it is necessary to be 1.0~5.0 mass %, preferably 1.5~4.5 mass %, be more preferably
2.0~4.0 mass %.(C) it is transparent when the compounding amount of polyisocyanates is less than 1.0 mass %, it is impossible to obtain sufficient cohesive force
The intensity of bonding sheet becomes insufficient.On the other hand, when the compounding amount of (C) polyisocyanates is more than 5.0 mass %, gained is transparent
The flexibility of bonding sheet becomes insufficient, it is impossible to obtain sufficient difference in height tracing ability.
((D) tin series catalysts)
As (D) the tin series catalysts used in the present invention, dibutyl tin laurate, diethyl caproic acid two can be enumerated
Butyl tin, tin dilaurate dioctyl tin etc..Wherein, from the curability of (C) polyisocyanates is good, from the aspect of security,
It is preferred that tin dilaurate dioctyl tin.
In addition, as the compounding amount of (D) tin series catalysts in the transparent pressure-sensitive adhesive sheet composition of the present invention, relative to saturating
The all solids composition of bright bonding sheet composition, it is necessary to be 0.005~0.1 mass %, preferably 0.01~0.09 mass %,
More preferably 0.02~0.080 mass %.(D) when the compounding amount of tin series catalysts is less than 0.005 mass %, transparent pressure-sensitive adhesive sheet is used
The curability of composition is insufficient, and cohesive force diminishes, during more than 0.1 mass %, and working life when transparent pressure-sensitive adhesive sheet makes shortens.
(transparent pressure-sensitive adhesive sheet composition)
The transparent pressure-sensitive adhesive sheet of the present invention is necessary for 0~5mgKOH/g, preferably 0~1mgKOH/g with the acid number of composition,
More preferably 0~0.3mgKOH/g, particularly preferably 0~0.1mgKOH/g.Transparent pressure-sensitive adhesive sheet is higher than with the acid number of composition
During 5mgKOH/g, the suppression of the corrosion of the conductive layer surface of nesa coating becomes difficult.It should be noted that transparent pressure-sensitive adhesive sheet is used
The acid number of composition is the value determined according to JIS K0070.For example proceed as described below measure.
With precision balance in 100ml conical flasks precision weighing sample about 2g or so, thereto add ethanol/ether=1/
The mixed solvent 10ml of 1 (mass ratio) is simultaneously dissolved.And then, 1~3 drop is added into the container as the phenolphthalein second of indicator
Alcoholic solution, is sufficiently stirred for until sample becomes uniform.It is titrated with 0.1N potassium hydroxide-ethanol solution, by indicator
The terminal of neutralization is used as when light red continues 30 seconds.The value that following formula (1) is obtained will be used by the result as transparent pressure-sensitive adhesive sheet
With the acid number of composition.
[mathematical expression 1]
Acid number (mgKOH/g)=[B × f × 5.611]/S (1)
B：The consumption (ml) of 0.1N potassium hydroxide-ethanol solution
f：The factor of 0.1N potassium hydroxide-ethanol solution
S：The collection capacity (g) of sample
In the transparent pressure-sensitive adhesive sheet composition of the present invention, for the bonding force of the transparent pressure-sensitive adhesive sheet obtained by improving, may be used also
To add tackifying resin in the transparent scope that will not reduce transparent pressure-sensitive adhesive sheet as needed.It is used as the example of tackifying resin
Son, can include the rosin series resins such as the carboxylate of rosin, rosin；The terpene system such as diterpene polymer, australene-phenol copolymer tree
Fat；The Petropols such as fatty family (C5 systems), fragrant family (C9 systems)；And phenylethylene resin series, phenolic aldehyde system resin, dimethylbenzene
Resin etc..From the viewpoint of light resistance, the esterification of the carboxylate, disproportionated rosin of the hydrogenated rosin for preferably lacking unsaturated double-bond
Thing, fatty family Petropols, fragrant family Petropols, acrylic resin with high Tg etc. are added to transparent pressure-sensitive adhesive sheet
In.As the addition of tackifying resin, 1~10 mass parts are added with composition preferably with respect to 100 mass parts transparent pressure-sensitive adhesive sheets.
In addition, in the transparent pressure-sensitive adhesive sheet composition of the present invention, as needed, may be used also in the scope for not damaging the transparency
To contain known various additives.As additive, plasticizer can be included, surface lubricant, levelling agent, softening agent, anti-
The light stabilizers such as oxidant, age resistor, ultra-violet absorber, polymerization inhibitor, enumerate BTA system, phosphate system and others are fire-retardant
Antistatic additive etc. as agent, surfactant.
In addition, in order to adjust viscosity during coating, transparent pressure-sensitive adhesive sheet composition of the invention can also use organic molten
Agent is diluted.As used organic solvent, for example, it can include MEK, acetone, ethyl acetate, tetrahydrofuran, two
Oxane, cyclohexanone, n-hexane, toluene, dimethylbenzene, normal propyl alcohol, isopropanol, n-propyl acetate etc..These organic solvents can be single
Solely use or mix two or more to use.
(transparent pressure-sensitive adhesive sheet)
The transparent pressure-sensitive adhesive sheet of the present invention is to make obtained from above-mentioned transparent pressure-sensitive adhesive sheet composition solidifies.More specifically,
It can be used in purposes (optical component laminating is used), manufacture purposes of optical articles of laminating optical component etc..In addition, of the invention
Transparent pressure-sensitive adhesive sheet can be bonding sheet or the both-sided adhesive that is only formed without base material by adhesive phase with base material
Piece.As optical component, as long as the component with optical characteristics is not particularly limited, for example, it can include pie graph picture and show
The component used in showing device, the component of touch panel or these equipment.More specifically, polarizer, phase can for example be included
Potential difference plate, optical compensating film, brightness enhancement film, light guide plate, reflective film, antireflective film, transparent conductive film, design are thin
Film, decorating film, surface protective film, prism, lens, colour filter, transparency carrier and component that they are laminated.
The transparent pressure-sensitive adhesive sheet of the present invention can be obtained as follows：Will be in solvent obtained from dissolving transparent pressure-sensitive adhesive sheet composition
Solution coating is thermally dried to the solution being coated with stripping film and is crosslinked it, thus obtain transparent pressure-sensitive adhesive sheet.Thoroughly
The thickness of bright bonding sheet is preferably 5~200 μm, more preferably 10~150 μm, more preferably 15~100 μm.If transparent viscous
The thickness for closing piece is thinner than 5 μm, then the tendency that there is the laminating for being difficult to transparent pressure-sensitive adhesive sheet.If the thickness of transparent pressure-sensitive adhesive sheet is thicker than
200 μm, then there are problems that dissolvent residual produces the tendency of foul smell on piece.It should be noted that being used as the formation present invention's
Coating (coating) method during transparent pressure-sensitive adhesive sheet, can use known rubbing method, can use conventional coating machine, for example recessed
Roller coating machine, reverse roll coater, kiss roll coater, dip roll coating machine, bar coater, knife type coater, flush coater, comma
Coating machine, direct coating machine etc. are coated.
The gel fraction of the transparent pressure-sensitive adhesive sheet of the present invention is preferably 40%~80%, and more preferably 45%~75%, enter one
Step is preferably 50%~70%.When gel fraction is less than 40%, although can use, but there is the cohesive force of transparent pressure-sensitive adhesive sheet
Become too small tendency.In addition, gel fraction be more than 80% when, exist transparent pressure-sensitive adhesive sheet difference in height tracing ability be deteriorated incline
To.
It should be noted that the gel fraction of transparent pressure-sensitive adhesive sheet can according to toluene impregnate before and in toluene at room temperature
Dipping 24 hours, at 80 DEG C dry 5 hours after sample quality, tried to achieve by following formula (2).
[mathematical expression 2]
Gel fraction (%)=[(dry mass (the not quality including toluene) after the toluene dipping of transparent pressure-sensitive adhesive sheet)/
(quality before the toluene dipping of transparent pressure-sensitive adhesive sheet)] × 100 (2)
(nesa coating fixation transparent pressure-sensitive adhesive sheet)
The nesa coating fixation transparent pressure-sensitive adhesive sheet of the present invention forms to solidify above-mentioned transparent pressure-sensitive adhesive sheet composition
Nesa coating fixation transparent pressure-sensitive adhesive sheet, can be suitably be bonded with the conductive layer surface of nesa coating and be not likely to produce
The corrosion of conductive layer.Therefore, by the stacking Nian Jie with the conductive layer surface of nesa coating of nesa coating fixation piece
Body can suitably serve as touch panel.In addition, the nesa coating fixation transparent pressure-sensitive adhesive sheet of the present invention can be with base
The bonding sheet of material or the double-sided adhesive sheet only formed without base material by adhesive phase.In addition, adhesive phase can only by
Simple layer formation or laminated multi-layer are formed.Wherein, it is preferably not have from the viewpoint of the transparency, difference in height tracing ability is ensured
The double-sided adhesive sheet for having base material and only being formed by adhesive phase.
The nesa coating used as the nesa coating fixation of the present invention with transparent pressure-sensitive adhesive sheet, as long as at least one side
Top layer there is conductive layer, can include by evaporation, coating and the top layer of transparent base is provided with conductive materials
Nesa coating.The conductive materials of conductive layer to being deposited, being coated on nesa coating are not particularly limited, specifically, can
Include silver, tin indium oxide, indium oxide, tin oxide, zinc oxide, cadmium oxide, gallium oxide, titanium oxide etc..Wherein, preferably use
Bright property, the silver of excellent electric conductivity, tin indium oxide.In nesa coating, as the base material for being deposited or coating conductive materials, without spy
Do not limit, glass, resin film etc. can be included.
It should be noted that the nesa coating fixation of the present invention can be by bonding with transparent pressure-sensitive adhesive sheet with aforementioned transparent
Piece identical method is obtained.
Embodiment
More specific description is carried out to the present invention below by way of embodiments and comparative examples, but the present invention is not by these examples
Any restriction.
<(methyl) acrylic resin (A-1)~(A-3) synthesis>
Respectively make in manufacture of the adding proportion (mol%) of (methyl) acrylic monomer according to (methyl) acrylic resin
The total amount (mol) of (methyl) acrylic monomer is calculated.Filled to possessing cooling tube, nitrogen ingress pipe, thermometer and stirring
The mass parts of n-propyl acetate 500, the mass parts of 2-EHA 320 (53mol%), methyl are added in the reaction vessel put
The mass parts of methyl acrylate 125 (38mol%), the mass parts of isobornyl acrylate 50 (8mol%), methacrylic acid 2- hydroxyls
The mass parts of ethyl ester 5 (1mol%), 2, double (isobutyronitrile) 0.1 mass parts of 2 '-azo, in progress 8 hours at 95 DEG C in nitrogen stream
Polymerization is handled, and is subsequently cooled to 30 DEG C, is obtained (methyl) acrylic copolymer (A-1).Gained (methyl) acrylic copolymer
The glass transition temperature of thing (A-1) is -30 DEG C, and weight average molecular weight is 200,000.It should be noted that (methyl) acrylic compounds are common
The glass transition temperature of polymers, the measure of weight average molecular weight in preceding described method by carrying out.In addition, except changing table 1
Described in the ratio of components containing (methyl) acryl monomer outside, grasped in the same manner as (methyl) acrylic copolymer (A-1)
Make, obtain (methyl) acrylic copolymer (A-2)~(A-3).In addition, same with (methyl) acrylic copolymer (A-1)
Ground, glass transition temperature, the measure of weight average molecular weight are also carried out to (methyl) acrylic copolymer (A-2)~(A-3).Will
As a result it is shown in table 1.
<The synthesis of (methyl) acrylic resin (A-4)>
Respectively make in manufacture of the adding proportion (mol%) of (methyl) acrylic monomer according to (methyl) acrylic resin
The total amount (mol) of (methyl) acrylic monomer is calculated.Possessing cooling tube, nitrogen ingress pipe, thermometer and stirring dress
The mass parts of n-propyl acetate 500, the mass parts of 2-EHA 320 (53mol%), methyl are added in the reaction vessel put
The mass parts of methyl acrylate 118 (36mol%), the mass parts of isobornyl acrylate 50 (7mol%), methacrylic acid 2- hydroxyls
The mass parts of ethyl ester 5 (1mol%), the mass parts of acrylic acid 6 (3mol%), 2, double (isobutyronitrile) 0.1 mass parts of 2 '-azo, in nitrogen
In carrying out the processing of polymerization in 8 hours at 95 DEG C in stream, 30 DEG C are subsequently cooled to, (methyl) acrylic copolymer (A-4) is obtained.Institute
The glass transition temperature for obtaining (methyl) acrylic copolymer (A-4) is -30 DEG C, and weight average molecular weight is 230,000.Need explanation
, the glass transition temperature of (methyl) acrylic copolymer, the measure of weight average molecular weight pass through in preceding described method
Carry out.In addition, in the same manner as (methyl) acrylic copolymer (A-1)~(A-3), to (methyl) acrylic copolymer (A-
4) glass transition temperature, the measure of weight average molecular weight are also carried out.Show the result in table 1.
Table 1
*1；Methyl methacrylate
*2；Isobornyl acrylate
*3；2-EHA
*4；2-hydroxyethyl methacrylate
*5；Acrylic acid
(embodiment 1~3 and comparative example 1~5)
With shown in table 2 composition compounding (methyl) acrylic resin, polyoxy sub alkyl polylol, polyisocyanates and
Tin series catalysts, and then solid component concentration is adjusted to 50 mass % with n-propyl acetate, at room temperature using dispersion machine by institute
Solution mixing is obtained, transparent pressure-sensitive adhesive sheet composition solution is thus obtained.It should be noted that in table 2 on (methyl) propylene
Acid resin, polyoxy sub alkyl polylol, the numerical value of polyisocyanates and tin series catalysts are expressed as relative to transparent pressure-sensitive adhesive sheet
With the quality % of all solids composition of composition.By the transparent pressure-sensitive adhesive sheet composition solution using dried thickness as 100 μ
M mode cast coat (coating 200 μm of thickness) arrives one to polyethylene terephthalate (PET) film of 50 μm of thickness
Face is implemented on the lift-off processing face of the barrier film of lift-off processing, heat drying 10 minutes at 50 DEG C, heat drying 10 at 80 DEG C
Minute, heat drying 20 minutes at 110 DEG C, and then by the one side to the PET film of 38 μm of thickness implement lift-off processing every
Lift-off processing surface side from film covers adhesive side.Then, carry out curing for 72 hours at 40 DEG C, make double-sided adhesive sheet
(no base material type).
(acid number)
The acid number of each transparent pressure-sensitive adhesive sheet composition is determined using preceding method.As a result it is as shown in table 2.
(resistance value of indium oxide tin film is determined)
50mm × 50mm size will be cut by double-sided adhesive sheet obtained above, 38 μm of unilateral thick PET are peeled off thin
Film, so that one of double-sided adhesive sheet parallel and double when one of PET film is deposited with 100mm × 100mm tin indium oxide
The position of face bonding sheet be located in machine and transverse direction tin indium oxide be deposited PET film substantial middle mode by both-sided adhesive
Piece fits in tin indium oxide film surface.PET film is deposited for the tin indium oxide for being fitted with double-sided adhesive sheet, is determined using resistance value
Instrument (" Loresta-GP " of Mitsubishi chemical Co., Ltd's manufacture) determines 1 angle and position of on the tin indium oxide film surface, film
Initial resistance value (R between the two ends at the angle on its diagonal1).In addition, the tin indium oxide that double-sided adhesive sheet will be fitted with
Evaporation PET film is placed 500 hours under the conditions of 60 DEG C, 90%RH, under the conditions of 23 DEG C, the 50%RH after placement 1 hour, with
Determine the position identical position finding resistance value (R of initial resistance value2).The resistance value rate of rise of indium oxide tin film is by following
Formula (3) is calculated.
[mathematical expression 3]
Resistance value rate of rise (%)=((R of indium oxide tin film2-R1)/R1)×100 (3)
The evaluation of resistance value rate of rise is carried out by following benchmark.As a result it is as shown in table 2.
○：Resistance value rate of rise is less than 5%
△：Resistance value rate of rise is more than 5% and less than 10%
×：Resistance value rate of rise is more than 10%
(total light transmittance measure)
30mm × 30mm size will be cut by double-sided adhesive sheet obtained above, stripping is present in double-sided adhesive sheet two sides
Stripping PET film in one side 38 μm of thickness stripping PET film, laminating on a glass, regard gained layered product as survey
Surely sample is used.Made " HR-100 types " is studied using Murakami K. K.'s dye technology for test sample, total light transmission is determined
Rate (%).As a result it is as shown in table 2.
(bonding force of double-sided adhesive sheet is determined)
25mm × 100mm size will be cut by double-sided adhesive sheet obtained above, the one side of double-sided adhesive sheet is peeled off
After thick 38 μm stripping PET film, the PET film for re-pasting 50 μm of the thickness that sided corona treatment is implemented to one side, it will bond
Face (aspect of measure) is pasted on breadboard, makes 2kg rubber rollers (width：About 50mm) reciprocal 1 time, make test sample.Make
Glass plate is used for breadboard.For resulting test sample, placed 24 hours in the environment of 23 DEG C, humidity 50%,
The tension test in 180 ° of directions is carried out within 300mm/ minutes with peeling rate according to JIS Z0237, double-sided adhesive sheet is determined to glass
The bonding force (N/25mm) of plate.It regard resulting measured value as bonding force.As a result it is as shown in table 2.
(evaluation of difference in height tracing ability)
The stripping PET film of 38 μm of the thickness by the one side of double-sided adhesive sheet obtained above is peeled off, and by the both-sided adhesive
Piece is fitted in be printed to thickness 0.5mm, length 50mm, width 40mm glass plate with 15 μm of thickness, width 5mm with window frame shape
Brush band printed glass plate, and then peel off another side stripping PET film after, carry out with thickness 0.5mm, length 50mm,
The laminating of width 40mm glass plate, carries out heating pressurized treatments and carries out under conditions of 5 atmospheric pressure, 70 DEG C, 10 minutes
After fixation, the adhesive layer of the poor part of visual height of observation floats.
The evaluation of difference in height tracing ability is carried out by following benchmark.As a result it is as shown in table 2.
○：Part with the difference in height state unconfirmed floated to adhesive layer
△：Part with difference in height confirms the state that adhesive layer somewhat floats
×：Part with difference in height confirms the state that adhesive layer substantially floats
(gel fraction measure)
Using resulting transparent pressure-sensitive adhesive sheet, gel fraction is determined by method described above.As a result it is as shown in table 2.
Table 2
*5；Mitsui Chemicals, Inc's manufacture propane diols number-average molecular weight 1000 (hydroxyl value 110mg KOH/g)
*6；Sanyo Chemical Industries, Ltd.'s manufacture propane diols number-average molecular weight 400 (hydroxyl value 280mg KOH/g)
*7；Mitsui Chemicals, Inc's manufacture propane diols number-average molecular weight 4000 (hydroxyl value 30mg KOH/g)
*8；Nippon Polyurethane Industry Co., Ltd. manufactures the isocyanuric acid vinegar body of the isocyanide glass ester of hexa-methylene two.
Claims (9)
1. a kind of transparent pressure-sensitive adhesive sheet composition, it is included in terms of solid constituent ratio：
(A) the mass % of (methyl) acrylic resin 65~85,
(B) the mass % of polyoxy sub alkyl polylol 10~30,
(C) the mass % of polyisocyanates 1.0~5.0 and
(D) the mass % of tin series catalysts 0.005~0.1,
The acid number of the transparent pressure-sensitive adhesive sheet composition is 0~5mgKOH/g,
Wherein, the weight average molecular weight of (A) (methyl) acrylic resin is 100,000~600,000, and (B) polyoxy sub alkyl polylol
Number-average molecular weight be 500~1500.
2. transparent pressure-sensitive adhesive sheet composition according to claim 1, wherein, (A) (methyl) acrylic resin includes 0.5
The construction unit of~10mol% (methyl) acrylic monomer from hydroxyl.
3. transparent pressure-sensitive adhesive sheet composition according to claim 2, it is characterised in that (methyl) acrylic compounds of hydroxyl
Monomer is (methyl) acrylic acid 2- hydroxy methacrylates.
4. according to transparent pressure-sensitive adhesive sheet composition according to any one of claims 1 to 3, wherein, (A) (methyl) acrylic compounds
Resin includes the 5~50mol% construction unit from (methyl) methyl acrylate.
5. according to transparent pressure-sensitive adhesive sheet composition according to any one of claims 1 to 3, wherein, (A) (methyl) acrylic compounds
The glass transition temperature of resin is -80~0 DEG C.
6. a kind of transparent pressure-sensitive adhesive sheet, its be make transparent pressure-sensitive adhesive sheet composition according to any one of claims 1 to 5 solidify and
Obtain.
7. transparent pressure-sensitive adhesive sheet according to claim 6, its gel fraction is 40%~80%.
8. a kind of nesa coating fixation transparent pressure-sensitive adhesive sheet, it is characterised in that by the transparent adhesion described in claim 6 or 7
Piece is used for the laminating of nesa coating.
9. a kind of layered product, it is characterised in that the nesa coating fixation wherein described in claim 8 is bonded with transparent pressure-sensitive adhesive sheet
In the conductive layer surface of nesa coating.
Applications Claiming Priority (2)
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|---|---|---|---|
| JP2013-100717 | 2013-05-10 | ||
| JP2013100717A JP6091990B2 (en) | 2013-05-10 | 2013-05-10 | Composition for transparent adhesive sheet |
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| JP (1) | JP6091990B2 (en) |
| KR (1) | KR102234826B1 (en) |
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| JP2016210900A (en) * | 2015-05-11 | 2016-12-15 | 積水化学工業株式会社 | Adhesive sheet |
| CN109313962A (en) * | 2016-06-10 | 2019-02-05 | 日东电工株式会社 | Transparent conducting film and touch panel |
| JP6759374B2 (en) * | 2018-02-05 | 2020-09-23 | 日東電工株式会社 | Adhesive sheet and adhesive sheet peeling method |
| EP4382290A1 (en) | 2021-08-05 | 2024-06-12 | Shin-Etsu Chemical Co., Ltd. | Article having water- and oil-repellent surface layer |
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| CN1696230A (en) * | 2004-05-14 | 2005-11-16 | 日东电工株式会社 | Pressure-sensitive adhesive composition, pressure-sensitive adhesive sheets, and surface protecting film |
| CN1749345A (en) * | 2004-09-16 | 2006-03-22 | 日东电工株式会社 | Pressure-sensitive adhesive compositions, pressure-sensitive adhesive sheets and surface protecting films |
| CN102161870A (en) * | 2010-02-22 | 2011-08-24 | 日东电工株式会社 | Surface protective film |
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| JP2005314476A (en) * | 2004-04-27 | 2005-11-10 | Nitto Denko Corp | Adhesive composition, adhesive sheet and surface-protective film |
| JP5299804B2 (en) | 2004-08-03 | 2013-09-25 | 綜研化学株式会社 | Adhesive sheet for attaching metal |
| JP4717943B2 (en) * | 2004-09-16 | 2011-07-06 | 日東電工株式会社 | Adhesive composition, adhesive sheet, and surface protective film |
| JP5210078B2 (en) * | 2008-07-31 | 2013-06-12 | ビッグテクノス株式会社 | Electrically peelable pressure-sensitive adhesive composition, electrically peelable adhesive product, and method for peeling |
| JP2010065217A (en) * | 2008-08-12 | 2010-03-25 | Nippon Synthetic Chem Ind Co Ltd:The | Self-adhesive composition for optical member, self-adhesive for optical member, and optical member with self-adhesive layer obtained by using the same |
| JP4800363B2 (en) | 2008-09-26 | 2011-10-26 | 日東電工株式会社 | Adhesive sheet for bonding optical members |
| JP5277937B2 (en) | 2008-12-17 | 2013-08-28 | Ｄｉｃ株式会社 | Double-sided adhesive sheet for fixing transparent conductive film, transparent conductive film laminate, touch panel device |
| JP5580069B2 (en) * | 2009-02-26 | 2014-08-27 | 日東電工株式会社 | Adhesive composition for surface protective film and use thereof |
| JP2011246700A (en) * | 2010-04-27 | 2011-12-08 | Nippon Synthetic Chem Ind Co Ltd:The | Acrylic resin solution, acrylic adhesive composition, acrylic adhesive, adhesive sheet, acrylic adhesive for optical element, and optical element with adhesive layer |
| JP5725760B2 (en) * | 2010-08-19 | 2015-05-27 | 大同化成工業株式会社 | Acrylic polymer compounds used in pressure-sensitive adhesive compositions for touch panels |
| JP6097473B2 (en) * | 2010-12-13 | 2017-03-15 | 日東電工株式会社 | Optical film pressure-sensitive adhesive composition, optical film pressure-sensitive adhesive layer, pressure-sensitive adhesive optical film, and image display device |
| JP2013047295A (en) * | 2011-08-29 | 2013-03-07 | Soken Chem & Eng Co Ltd | Adhesive agent, adhesive sheet and laminate for touch panel |
| JP5757825B2 (en) | 2011-08-29 | 2015-08-05 | 綜研化学株式会社 | Laminated body and touch panel having the laminated body |
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| CN1696230A (en) * | 2004-05-14 | 2005-11-16 | 日东电工株式会社 | Pressure-sensitive adhesive composition, pressure-sensitive adhesive sheets, and surface protecting film |
| CN1749345A (en) * | 2004-09-16 | 2006-03-22 | 日东电工株式会社 | Pressure-sensitive adhesive compositions, pressure-sensitive adhesive sheets and surface protecting films |
| CN102161870A (en) * | 2010-02-22 | 2011-08-24 | 日东电工株式会社 | Surface protective film |
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| JP6091990B2 (en) | 2017-03-08 |
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