CN101766053A - Double-faced pressure-sensitive adhesive sheet - Google Patents
Double-faced pressure-sensitive adhesive sheet Download PDFInfo
- Publication number
- CN101766053A CN101766053A CN200880100252A CN200880100252A CN101766053A CN 101766053 A CN101766053 A CN 101766053A CN 200880100252 A CN200880100252 A CN 200880100252A CN 200880100252 A CN200880100252 A CN 200880100252A CN 101766053 A CN101766053 A CN 101766053A
- Authority
- CN
- China
- Prior art keywords
- sensitive adhesive
- double
- adhesive sheet
- faced pressure
- acrylic acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004820 Pressure-sensitive adhesive Substances 0.000 title claims abstract description 68
- 239000000178 monomer Substances 0.000 claims abstract description 44
- 125000000524 functional group Chemical group 0.000 claims abstract description 12
- 238000004132 cross linking Methods 0.000 claims abstract description 10
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 59
- 229920001577 copolymer Polymers 0.000 claims description 35
- 239000000758 substrate Substances 0.000 claims description 24
- CERQOIWHTDAKMF-UHFFFAOYSA-N alpha-methacrylic acid Natural products CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 17
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 claims description 14
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 150000001875 compounds Chemical group 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 6
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract description 14
- 239000004615 ingredient Substances 0.000 abstract description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 abstract 2
- 229920006243 acrylic copolymer Polymers 0.000 abstract 1
- 230000002411 adverse Effects 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 238000010943 off-gassing Methods 0.000 abstract 1
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- 238000006116 polymerization reaction Methods 0.000 description 14
- 239000000047 product Substances 0.000 description 14
- 239000003431 cross linking reagent Substances 0.000 description 10
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- 238000002360 preparation method Methods 0.000 description 9
- BAPJBEWLBFYGME-UHFFFAOYSA-N acrylic acid methyl ester Natural products COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 8
- 239000000123 paper Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 7
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- 238000000576 coating method Methods 0.000 description 6
- 239000003505 polymerization initiator Substances 0.000 description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 5
- 125000003368 amide group Chemical group 0.000 description 5
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- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 3
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- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
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- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 2
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
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- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
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- 229920005992 thermoplastic resin Polymers 0.000 description 2
- OVBFMUAFNIIQAL-UHFFFAOYSA-N 1,4-diisocyanatobutane Chemical compound O=C=NCCCCN=C=O OVBFMUAFNIIQAL-UHFFFAOYSA-N 0.000 description 1
- DIDWNCSDVBKWCN-UHFFFAOYSA-N 1-isocyanato-2-(2-isocyanatoethyl)benzene Chemical compound O=C=NCCC1=CC=CC=C1N=C=O DIDWNCSDVBKWCN-UHFFFAOYSA-N 0.000 description 1
- XLPJNCYCZORXHG-UHFFFAOYSA-N 1-morpholin-4-ylprop-2-en-1-one Chemical compound C=CC(=O)N1CCOCC1 XLPJNCYCZORXHG-UHFFFAOYSA-N 0.000 description 1
- MBVGJZDLUQNERS-UHFFFAOYSA-N 2-(trifluoromethyl)-1h-imidazole-4,5-dicarbonitrile Chemical compound FC(F)(F)C1=NC(C#N)=C(C#N)N1 MBVGJZDLUQNERS-UHFFFAOYSA-N 0.000 description 1
- CCJAYIGMMRQRAO-UHFFFAOYSA-N 2-[4-[(2-hydroxyphenyl)methylideneamino]butyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCCCN=CC1=CC=CC=C1O CCJAYIGMMRQRAO-UHFFFAOYSA-N 0.000 description 1
- GTACSIONMHMRPD-UHFFFAOYSA-N 2-[4-[2-(benzenesulfonamido)ethylsulfanyl]-2,6-difluorophenoxy]acetamide Chemical compound C1=C(F)C(OCC(=O)N)=C(F)C=C1SCCNS(=O)(=O)C1=CC=CC=C1 GTACSIONMHMRPD-UHFFFAOYSA-N 0.000 description 1
- XRUKRHLZDVJJSX-UHFFFAOYSA-N 4-cyanopentanoic acid Chemical compound N#CC(C)CCC(O)=O XRUKRHLZDVJJSX-UHFFFAOYSA-N 0.000 description 1
- CFZDMXAOSDDDRT-UHFFFAOYSA-N 4-ethenylmorpholine Chemical compound C=CN1CCOCC1 CFZDMXAOSDDDRT-UHFFFAOYSA-N 0.000 description 1
- 101710130081 Aspergillopepsin-1 Proteins 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical class [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 102100031007 Cytosolic non-specific dipeptidase Human genes 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
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- 125000005250 alkyl acrylate group Chemical group 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
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- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- HIFVAOIJYDXIJG-UHFFFAOYSA-N benzylbenzene;isocyanic acid Chemical class N=C=O.N=C=O.C=1C=CC=CC=1CC1=CC=CC=C1 HIFVAOIJYDXIJG-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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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
-
- 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
-
- 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
- C09J7/30—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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/02—Details
- H05B33/04—Sealing arrangements, e.g. against humidity
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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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
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
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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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/124—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
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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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/18—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet characterized by perforations in the adhesive tape
-
- 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
- C09J2301/302—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 the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/846—Passivation; Containers; Encapsulations comprising getter material or desiccants
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
A double-faced pressure-sensitive adhesive sheet for use in fixing a removing member for removing a given gaseous ingredient present in a space in an EL element. The double-faced pressure-sensitive adhesive sheet comprises a base sheet and pressure-sensitive adhesive layers formed respectively on both sides thereof. Each pressure-sensitive adhesive layer is made of a pressure-sensitive adhesive comprising a product of the crosslinking of an acrylic copolymer containing no carboxy group and comprising (A) units of an alkyl (meth)acrylate in which the alkyl has up to four carbon atoms and (B) units of an ethylenic monomer having a reactive functional group. This double-faced pressure-sensitive adhesive sheet is reduced in outgassing and has high tackiness. This adhesive sheet is used for fixing a removing member for removing a gaseous ingredient which is present in a space in an EL element and adversely influences the EL element.
Description
Technical field
The present invention relates to a kind of double-faced pressure-sensitive adhesive sheet, in more detail, it is few and have a high adhesion rerum natura to relate to a kind of exhaust generation, and can be used in will remove the fixing double-faced pressure-sensitive adhesive sheet of parts, the described parts of removing are used to remove the inner space that is present in electroluminescence (following brief note is EL) element and this EL element are caused dysgenic gas componant.
Background technology
Producing luminous phenomenon during to the material additional electric field, as the EL phenomenon, has been known.EL element is exactly to have utilized the element of such EL phenomenon.Organic EL is a kind of as EL element, have one deck organic luminous layer at least and be sandwiched in layered product between the pair of electrodes, by luminous with organic luminous layer, combining from opposite side electrode injected holes from a lateral electrode injected electrons of above-mentioned layered product.Used the display of such organic EL to have the performance more superior than thin display in the past: the visual angle is wide, high-contrast, low power consumption and can ultra-thinization, the serviceability temperature scope is wide.
But, after above-mentioned organic EL uses under hot conditions and uses for a long time, have luminescent properties such as luminosity and uniformity of luminance and use the significantly shortcoming of deterioration of preliminary phase ratio.Produce one of reason of such luminescent properties deterioration, the generation that can enumerate non-luminous part (blackspot).Known this blackspot is because moisture, oxygen or organic gas are invaded the cathode surface part of above-mentioned layered product etc., causes the oxidation of disengaging between organic luminous layer and the negative electrode or cathode surface and the reason that can't switch on produces.And, as moisture, oxygen or the organic gas of this reason, for example be present in the atmosphere of element internal or and invade element internal by the outside, perhaps come off and produce owing to being adsorbed in material on component parts or the constituent material, and contact, and cause the generation of blackspot with above-mentioned layered product.
As having the organic EL that is used for material that the moisture that is present in the atmosphere of above-mentioned organic EL inside is removed, for example, proposed in container, to be equipped with the EL element of remover, have the zone that part is formed by porous material in container, described remover is used to remove set gas componant (for example with reference to patent documentation 1).
In addition, proposed to use the gas permeability sheet material and for the gel content that is difficult to make sticker by sticker releasing organics gas be fixed part (for example with reference to patent documentation 2) more than 70%.
Moreover, as containing the sheet that is useful on the remover that the above-mentioned gas composition is removed, for example, proposed a kind of gas componant and handled sheet, this gas componant is handled sheet and is made (for example with reference to patent documentation 3) with being used for that the granular remover that set gas componant is removed is dispersed in the precursor film with gas permeability.
On the other hand, as the sheet of removing for fixing to seal case, for example, a kind of sheet of removing that possesses remover and adhesion parts has been proposed, described remover is used to remove set gas componant, and described adhesion parts are fixed in described remover and described remover are adhered to the inner face (for example with reference to patent documentation 4) of EL element.
But, in above-mentioned all motions, as being used for remover is fixed in material in the element, record pressure sensitive adhesive etc., but just as the sticker of general well known materials, about be used for suppressing to luminescent properties have dysgenic organic gas (exhaust outgas) generation composition and form without any record.
Moreover, require ultra-thinization of EL element, also wish further ultra-thinization of employed double-faced pressure-sensitive adhesive sheet.
Patent documentation 1: No. 3447653 communique of patent
Patent documentation 2: No. 3558578 communique of patent
Patent documentation 3: the spy opens the 2001-278999 communique
Patent documentation 4: the spy opens the 2001-345173 communique
Summary of the invention
The objective of the invention is to, under these circumstances, provide a kind of double-faced pressure-sensitive adhesive sheet, this double-faced pressure-sensitive adhesive sheet exhaust generation is few, and have high adhesion rerum natura, can be used for being fixed for removing inner space that is present in EL element and the parts of removing that this EL element caused dysgenic gas componant.
The present inventor has carried out deep repeatedly research in order to reach described purpose, found that, sticker as the adhering agent layer that constitutes double-faced pressure-sensitive adhesive sheet, use contains the not sticker of the cross-linking products of carboxylic acrylic acid series copolymer, described not carboxylic acrylic acid series copolymer contains: ester moiety has (methyl) acrylic acid alkyl ester units of low alkyl group and contains the ethylenically unsaturated monomers unit of reactive functional groups, can reach this purpose thus.This invention is based on this opinion and finishes.
That is, the invention provides following double-faced pressure-sensitive adhesive sheet.
(1) a kind of double-faced pressure-sensitive adhesive sheet, this double-faced pressure-sensitive adhesive sheet is used for fixing removing parts, describedly remove the set gas componant that parts are used to remove the inner space that is present in electroluminescent cell, it is characterized in that, has adhering agent layer substrate two-sided, the sticker that constitutes each adhering agent layer contains the not cross-linking products of carboxylic acrylic acid series copolymer, and described not carboxylic acrylic acid series copolymer contains: (A) carbon number of alkyl is (methyl) acrylic acid alkyl ester units below 4 and the ethylenically unsaturated monomers unit that (B) contains reactive functional groups;
(2) according to above-mentioned (1) described double-faced pressure-sensitive adhesive sheet, wherein, (A) unit in the described not carboxylic acrylic acid series copolymer and (B) the content ratio of unit by quality ratio, are 95: 5 to 99.5: 0.5;
(3), wherein, also contain in the described not carboxylic acrylic acid series copolymer: the morpholine based compound unit that (C) contains the ethylenic unsaturated group according to above-mentioned (1) described double-faced pressure-sensitive adhesive sheet;
(4) according to above-mentioned (3) described double-faced pressure-sensitive adhesive sheet, wherein, with respect to (A) unit and (B) total amount 100 mass parts of unit, the content of described (C) unit is the 2-30 mass parts;
(5) according to above-mentioned (1) described double-faced pressure-sensitive adhesive sheet, wherein, (B) the ethylenically unsaturated monomers unit that contains reactive functional groups is the ethylenically unsaturated monomers unit that contains hydroxyl;
(6), wherein,,, be less than 0.5 μ g/cm to be scaled n-decane at 120 ℃ of exhaust generations that heat 10 minutes down according to above-mentioned (1) described double-faced pressure-sensitive adhesive sheet
2
(7) according to above-mentioned (1) described double-faced pressure-sensitive adhesive sheet, wherein, the thickness of described adhering agent layer is two-layer to be added up to below the 25 μ m;
(8) according to above-mentioned (1) described double-faced pressure-sensitive adhesive sheet, wherein, being formed with the aperture from a side adhering agent layer to an other side adhering agent layer is that 20-200 μ m, hole density are 30-10000/10cm
2Through hole.
According to the present invention, a kind of double-faced pressure-sensitive adhesive sheet can be provided, this two-sided sticker exhaust generation is few, and has high adhesion rerum natura, can be used for fixedly removing parts, this removes the set gas componant that parts are used to remove the inner space that is present in EL element, promptly this EL element is caused dysgenic gas componant.
Description of drawings
Fig. 1 is the schematic cross-section of EL element;
Fig. 2 is the sectional view of an example of double-faced pressure-sensitive adhesive sheet of the present invention;
Fig. 3 is in double-faced pressure-sensitive adhesive sheet of the present invention, and expression is formed with the sectional view of the state of through hole to another adhering agent layer from an adhering agent layer.
Description of reference numerals
1 EL element
2 substrates
3 seal cases
4 encapsulants
5 EL layered products
6 negative electrodes
7 organic luminous layers
8 anodes
9 remove parts
10 double-faced pressure-sensitive adhesive sheets
11 substrates
12,13 adhering agent layers
14 through holes
Embodiment
Double-faced pressure-sensitive adhesive sheet of the present invention is used for fixing removing parts, and the described parts of removing are used to remove the set gas componant that is present in the electroluminescent cell inner space, about its occupation mode, describe according to accompanying drawing.
Fig. 1 is the schematic cross-section of EL element.EL element 1 is formed with layered product (EL layered product) 5 on flat substrate 2, described layered product 5 is formed by anode 8 and negative electrode 6 clamping organic luminous layers 7, aforesaid substrate 2 is provided with seal case 3 to cover described layered product 5, and the edge part of sealing casing 3 and aforesaid substrate 2 are fixed by encapsulant 4.And, will remove the top that parts 9 are fixed in above-mentioned seal case 3 by double-faced pressure-sensitive adhesive sheet 10.Thereby, by remove parts 9 will invade EL element 1 inside, cause gas componants such as moisture that blackspot forms, organic gas to be removed.
In addition, in Fig. 1, remove the top that parts 9 are fixed in seal case 3, but this fixed position is not particularly limited, for example also can be at the sidewall of seal case 3.
Fig. 2 is the cross section intention of an example of double-faced pressure-sensitive adhesive sheet of the present invention, and double-faced pressure-sensitive adhesive sheet 10 is provided with the structure of adhering agent layer 12,13 for the two sides of substrate 11.
Remove parts among the present invention, there is no particular limitation, can remove parts with what the gas componant that causes blackspot to form was removed from employed being used for EL element in the past, suitably selects to remove arbitrarily parts.As such parts of removing, for example, can enumerate removers such as adsorbent, hygroscopic agent (drier), deoxidier are scattered in formed tablet in the breathable plastics sheet, or remover is contained in the formed parts etc. of removing in the container of gas permeability.
[substrate]
As the substrate in the double-faced pressure-sensitive adhesive sheet of the present invention, get final product so long as be difficult to produce the substrate of organic gas, there is no particular limitation, can use various materials.Can enumerate polyolefin particularly, as polyethylene, polypropylene etc., polyester, as PETG, polybutylene terephthalate (PBT) etc., polyimides, resinous of polyamide etc.; To the material after the metal evaporations such as these sheets enforcement aluminium; The stationery that forms by synthetic paper, impregnated paper etc.; Metal forming such as aluminium foil or Copper Foil class etc.
There is no particular limitation for the thickness of these substrates, is generally the scope about 2-50 μ m, considers from ultra-thinization aspect, is preferably the scope about 3-20 μ m.
Use resinous during,, can carry out surface treatments such as oxidizing process or concavo-convexization method in order to improve and the adherence that adhering agent layer thereon is set as substrate.As above-mentioned oxidizing process, can enumerate for example Corona discharge Treatment, chromic acid processing (wet type), flame treatment, hot blast processing, ozone and ultraviolet irradiation processing etc.; In addition, as concavo-convexization method, can enumerate for example sand-blast, solvent treatment method etc.These surface treatment methods can suitably be selected according to the kind of substrate, but generally consider from aspects such as effect and operability, preferably use the Corona discharge Treatment method.In addition, also can implement to be provided with the prime treatment of prime coat.
[adhering agent layer]
In the present invention, be arranged at the adhering agent layer on the two sides of described substrate, it is characterized in that, the sticker of the cross-linking products of carboxylic acrylic acid series copolymer is constituted by containing not, and described not carboxylic acrylic acid series copolymer contains: (A) carbon number of alkyl is (methyl) acrylic acid alkyl ester units below 4, the ethylenically unsaturated monomers unit that (B) contains reactive functional groups and the morpholine based compound unit that contains the ethylenic unsaturated group according to required (C) that contains.When use contained the sticker of acrylic acid series copolymer of carboxyl, the side chain position of acrylate monomer was decomposed because of heat or humidity in the presence of carboxyls such as acrylic or methacrylic acid, and its analyte produces as exhaust.
(monomer)
Carbon number as the alkyl that forms described (A) unit is the monomer of (methyl) acrylic acid alkyl ester units below 4, specifically for example can enumerate (methyl) methyl acrylate, (methyl) ethyl acrylate, (methyl) acrylic acid n-propyl, (methyl) isopropyl acrylate, (methyl) n-butyl acrylate, (methyl) isobutyl acrylate, (methyl) sec-butyl acrylate, (methyl) tert-butyl acrylate etc.
In them, balance between seam pleat and cohesiveness and make polymerization after the boiling point of residual monomer, side chain catabolite reduce and heated drying when be coated with and the viewpoint that volatile ingredient is removed is considered preferred use (methyl) n-butyl acrylate or (methyl) methyl acrylate by sticker.They can be used alone, and also can be used in combination.
When the carbon number of use alkyl surpassed (methyl) alkyl acrylate of 4, it is many that exhaust described later produces quantitative change, and can not reach purpose of the present invention.
" reactive functional groups " that form in the ethylenically unsaturated monomers that contains reactive functional groups of described (B) unit is groups such as the hydroxyl that can react with isocyanates etc. or amide groups when crosslinkedization, therefore, as the ethylenically unsaturated monomers that contains reactive functional groups, for not containing the monomer of carboxyl, can use the ethylenically unsaturated monomers that contains hydroxyl or amide groups.
As the ethylenically unsaturated monomers that contains hydroxyl, can enumerate (methyl) acrylic acid hydroxyalkyl acrylate class, for example, (methyl) acrylic acid 2-hydroxy methacrylate, (methyl) acrylic acid 2-hydroxy propyl ester, (methyl) acrylic acid 3-hydroxy propyl ester, (methyl) acrylic acid 2-hydroxyl butyl ester, (methyl) acrylic acid 3-hydroxyl butyl ester, (methyl) acrylic acid 4-hydroxyl butyl ester etc.
As the ethylenically unsaturated monomers that contains amide groups, for example, can enumerate acrylamide, N,N-DMAA, N, the acrylamide monomer of N-dimethylmethacryl amide, N hydroxymethyl acrylamide, N-methylol methacrylamide etc. etc.
These contain the ethylenically unsaturated monomers of reactive functional groups, can be used alone, also can be used in combination, but the situation that contains the ethylenically unsaturated monomers of amide groups, excessive interpolation can make the Tg of polymer raise, cause the reduction of wetability, the result can not get sufficient adhesion strength, thereby is difficult to be applicable to the present invention.Therefore, use when containing the ethylenically unsaturated monomers of amide groups, preferred minute quantity is used.
In the present invention, as the monomer that forms (B) unit, can form the viewpoint of meeting non-discoloring acrylic acid series copolymers such as heat from the ethylenically unsaturated monomers that contains hydroxyl and consider, the preferred use.
Among the present invention, in acrylic acid series copolymer, the ethylenically unsaturated monomers unit that contains reactive functional groups as (B) unit, need to satisfy and can not introduce the such ethylenic unsaturated carboxylic acid unit of (methyl) acrylic acid units, can access the acrylic acid series copolymer that does not contain carboxyl in the side chain fully thus.Double-faced pressure-sensitive adhesive sheet with the adhering agent layer that constitutes by the sticker that contains this acrylic acid series copolymer, can reduce the exhaust generation, and can be used in the present invention fixing removing parts, the described parts of removing are used to remove the inner space that is present in EL element and this EL element are caused dysgenic gas componant.
In the present invention, do not contain described (A) unit and (B) the content ratio of unit in the acrylic acid series copolymer of carboxyl, consider from the cohesiveness of sticker and the viewpoint of adhesion equilibrium of forces, by quality ratio, be preferably 95: 5 to 99.5: 0.5, more preferably 96: 4 to 99: 1.
In the acrylic acid series copolymer that does not contain carboxyl in the present invention, consider, preferably comprise conduct (C) unit, morpholine based compound unit that contains the ethylenic unsaturated group from the viewpoint of adhesion strength and seam pleat sexual balance.As forming the morpholine that is somebody's turn to do (C) unit is monomer, can use for example N-vinyl morpholine, N-pi-allyl morpholine, N-(methyl) acryloyl morpholine etc.This morpholine is that monomer can be used alone, and also can be used in combination.
These morpholines are in the monomer, and the good viewpoint of the copolymerization of the monomer of monomer of described from forming (A) unit and formation (B) unit is considered, is preferably N-(methyl) acryloyl morpholine.
In the present invention, content that should (C) unit is considered from the adhesion strength of sticker and the viewpoint of seam pleat sexual balance, with respect to described (A) unit and (B) total amount 100 mass parts of unit, is preferably the 2-30 mass parts, more preferably the 4-25 mass parts.
In two-sided sticker of the present invention, described (C) unit in the acrylic acid series copolymer of formation adhering agent layer is incorporated in the copolymer, thereby side chain contains the morpholine structure, this morpholine structure has the effect of crosslinking accelerator in the cross-linking reaction that is caused by the isocyanate-based crosslinking agent described later, and, therefore can not produce generation by the caused exhaust of low molecular weight substance owing to need not to add the physical property that employed in the past low-molecular-weight crosslinking accelerator can obtain sticker.
In the present invention, the ethylenically unsaturated monomers conduct (D) that does not contain carboxyl except that the ethylenically unsaturated monomers that forms described (A)-(C) unit that can add styrene, vinyl acetate, the glyoxaline compound that contains the ethylenic unsaturated group, (methyl) acrylonitrile etc. when polymerization as required of described acrylic acid series copolymer forms the ethylenically unsaturated monomers of other unit.
This does not contain the content of (D) unit in the acrylic acid series copolymer of carboxyl, consider from the seam pleat of sticker and the viewpoint of adhesion strength balance, with respect to described (A) unit and (B) total amount 100 mass parts of unit, be preferably the 0-10 mass parts, more preferably the 0-5 mass parts.
(preparation of acrylic acid series copolymer)
In the present invention, the acrylic acid series copolymer that is used for sticker preferably prepares by following steps: after described each monomer is dissolved into the such ester class organic solvent of the such hydro carbons of toluene for example or dimethylbenzene or ethyl acetate, add known in the past azodiisobutyronitrile, 2,2 '-azo (2-amidine propane) dihydrochloride, 4, the peroxide polymerization initiator of the azo class polymerization initiator of 4 '-azo (4-cyanopentanoic acid) etc. or benzoyl peroxide etc. carries out Raolical polymerizable.
The amount of above-mentioned polymerization initiator with respect to monomer total amount 100 mass parts, is preferably the scope of 0.01-5 mass parts, is preferably the scope of 0.1-1 mass parts especially.
In polymerization reaction, along with the carrying out of polymerization, monomer and polymerization initiator in the polymerization system reduce gradually, significantly reduce in both chances of contact of polymerization later stage, and the monomer in the system can be residual thus.Residual monomer becomes the reason that the adhesion sheet produces foreign odor, and for the compound of excitant and toxicity is arranged, therefore it is remained in the sticker.(is below a few percent with respect to the monomer that adds) residual monomer of trace is separated from polymer, consider from the viewpoint of the economy of energy, and not preferred.Therefore, adopt following method: the back interpolation polymerization initiator that will be commonly referred to as boosting agent (booster) when polymerization stops adds in the system, makes the polymerization as far as possible of this residual monomer, to reduce residual monomer.
Usually about 10-100 ℃, be preferably about 50-90 ℃ and heated about 1-20 hour, carried out radical polymerization, and obtained the organic solvent solution of acrylic acid series copolymer thus in preferred about 3-10 hour.
The resulting weight average molecular weight that does not contain the acrylic acid series copolymer of carboxyl is generally more than 200,000, is preferably 400,000-2,000,000, and more preferably 500,000-1,000,000.
The method that macromolecule quantizes has: select to be difficult to take place the solvent that chain shifts as solvent, improve the concentration (shifting and the reduction solvent strength to solvent) of the monomer mixture in the reactant liquor in order to prevent chain, reduce the concentration (with respect to monomer) of polymerization initiator, under lower reaction temperature, carry out the method for polymerization etc.Carry out polymerization by being used in combination said method, can obtain having the acrylic acid series copolymer that does not contain carboxyl of weight average molecular weight as described above.
In addition, above-mentioned weight average molecular weight is the value of measuring by gel permeation chromatography (GPC) that is scaled polystyrene.
In the present invention, this acrylic acid series copolymer that does not contain carboxyl can be used alone, and also can be used in combination.
(crosslinking agent)
In the present invention, the sticker that constitutes adhering agent layer is to contain the sticker of the cross-linking products of the described acrylic acid series copolymer that does not contain carboxyl as resinous principle, and as the crosslinking agent that is used to obtain this cross-linking products, being preferably PIC is crosslinking agent.
PIC is that crosslinking agent is the compound that contains plural NCO in the molecule, as concrete example, can enumerate toluene di-isocyanate(TDI) (TDI), tetramethylene diisocyanate, hexamethylene diisocyanate (HMDI), IPDI (IPDI), dimethylene phenylene diisocyanate (XDI), HTDI, methyl diphenylene diisocyanate, hydrogenated diphenyl methane diisocyanate, and polyisocyanate compounds or isocyanurate compound that addition reaction forms take place in they and trimethylolpropane etc., biuret type compound also has and known PPG or PEPA, the acrylic polyalcohol, polybutadiene polyol, the PIC of the polyurethane prepolymer type that generation such as polyisoprene polyalcohol addition reaction forms etc.
These crosslinking agents can be used alone, and also can be used in combination.
The use amount of crosslinking agent with respect to not carboxylic acrylic acid series copolymer 100 mass parts, is preferably about the 0.1-10 mass parts, by regulating the use amount of this crosslinking agent, can prepare permanent binding type or exfoliated again sticker.
(formation of adhering agent layer)
Double-faced pressure-sensitive adhesive sheet of the present invention has adhering agent layer substrate two-sided, and this adhering agent layer can be by for example following method preparation.
At first, preparation contains described not carboxylic acrylic acid series copolymer, described crosslinking agent and the used as required solvent or the sticker coating fluid of various additives.As above-mentioned various additives, in the scope that does not influence the object of the invention, can suitably use antioxidant, ultra-violet absorber, tackifier, light stabilizer, filler etc.And, as solvent, can be from acrylic acid series sticker coating fluid, suitably selecting use usually in the employed solvent.
Then, utilize known method in the past, for example method of spin coating, spraying rubbing method, rod are coated with method, scraper rubbing method, print roll coating method, blade rubbing method, mould and are coated with methods such as method, intaglio plate rubbing method, described sticker coating fluid is applied to peeling off on the aspect of stripping film, then, in order to prevent the residual of solvent or low boiling point component, heating under the temperature about 80-150 ℃ about 30 seconds to 5 minutes, thereby make two stripping films with adhering agent layer, this adhering agent layer is pasted towards the two sides of substrate, can be obtained the target double-faced pressure-sensitive adhesive sheet thus.And,, pasting stripping film usually before use in order to protect adhering agent layer always.In addition, also can with the described two sides of similarly described sticker coating fluid directly being coated substrate, form adhering agent layer through heat treated, and then paste the stripping film shield.
There is no particular limitation for the thickness of the adhering agent layer of Xing Chenging like this, can suitably select, but as the adhering agent layer of single face, be chosen as the scope of 2-30 μ m usually, is preferably the scope of 3-20 μ m.In addition, because EL element required filming in recent years, so more preferably two be laminated together below 25 μ m.
[stripping film]
As described stripping film, can enumerate the stripping film of coating remover on the following material etc., described material comprises: the paper base material of glassine paper, art paper, good quality paper etc.; On these paper base materials lamination the laminated paper of thermoplastic resin of polyethylene or polypropylene etc.; Perhaps utilize the paper base material after cellulose, starch, polyvinyl alcohol, acrylic acid-styrene resin etc. carry out calking and handle above-mentioned base material; The perhaps polyester film of PETG, polybutylene terephthalate (PBT), PEN etc., the plastic film that polyolefin films such as polyethylene or polypropylene are such and these plastic films are carried out film that obtains after the easy bonding processing etc.
As being used to form the employed remover of peeling agent layer, can enumerate rubber based elastomers, long chain alkanes such as olefin-based resin, isoprene resin, butadiene-based resin is that resin, alkyd are resin, fluorine resin, silicone-based resin etc.
The thickness of formed peeling agent layer on base material, there is no particular limitation, when remover is coated with solution state, is preferably 0.05-2.0 μ m, more preferably 0.1-1.5 μ m.
As peeling agent layer, when forming at the thermoplastic resin that uses polyethylene or polypropylene etc., the thickness of peeling agent layer is preferably 3-50 μ m, more preferably 5-40 μ m.
[double-faced pressure-sensitive adhesive sheet]
Double-faced pressure-sensitive adhesive sheet of the present invention according to above-mentioned preparation has the few characteristics of exhaust generation.In the present invention, the exhaust generation compares with the value that is scaled n-decane.
By making exhaust generation, to be scaled n-decane, less than 0.5 μ g/cm from adhering agent layer
2, reduce the generation of blackspot.
Exhaust generation (A) when the double-faced pressure-sensitive adhesive sheet among the present invention heats 10min under 120 ℃ temperature to be scaled n-decane, is less than 0.5 μ g/cm
2, 0.1 μ g/cm more preferably
2Below, and can not corrode and be attached thing, be suitable for prolonging the life-span of EL element.
In addition, described exhaust generation is described stripping film to be peeled off remove the value that the back is measured.In addition, the concrete assay method about the exhaust generation is elaborated in an embodiment.
In addition, during the substrate attenuation, in the time will having pasted the double-faced pressure-sensitive adhesive sheet of removing parts on the surface of a side and paste on the seal case, the air between adhering agent layer and the seal case is stuck with the state of air-blowing, causes adhesion strength to descend.In order to prevent above-mentioned phenomenon, preferably be formed with the aperture and be about 20-200 μ m, hole density is 30-10 from a side adhering agent layer to an other side adhering agent layer, 000/10cm
2Through hole.
Thus, the air between adhering agent layer and seal case moves to opposed surface by through hole, and can discharge by the parts of removing with gas permeability, can prevent that therefore air from forming the state of air-blowing.
The cross sectional shape of through hole does not have special qualification, and the aperture of the through hole on substrate and the adhering agent layer is about 20-200 μ m, is preferably about 50-150 μ m.The aperture of through hole makes air or gas permeation easily when 20 μ m are above, the aperture of through hole is when 200 μ m are following, and adhesion strength is good.
The hole density of through hole is 30-10,000/10cm
2About, preferred 50-5,000/10cm
2, the hole density of through hole is at 30/10cm
2When above, make air or gas permeation easily; The hole density of through hole is at 10,000/10cm
2When following, the mechanical strength of double-faced pressure-sensitive adhesive sheet is good.
Above-mentioned through hole preferably forms by laser processing.By laser processing, can easily form the good fine through hole of gas-premeable with desirable hole density.
The kind of the employed laser of laser processing does not have special qualification, for example, can utilize carbon dioxide (CO
2) laser, TEA-CO
2Laser, YAG laser, UV-YAG laser, excimer laser, semiconductor laser, YVO
4Laser, YLF Lasers etc.
Fig. 3 is in two-sided sticker of the present invention, and expression is formed with the sectional view of the state of through hole to another adhering agent layer from an adhering agent layer.Symbol 11 is a substrate among the figure, and 12,13 is adhering agent layer, and 14 is through hole.
Embodiment
The present invention will be described in more detail by the following examples, but the present invention is not limited to these embodiment.
In addition, the method for evaluating performance of the resulting double-faced pressure-sensitive adhesive sheet of each embodiment is as follows.
(1) adhesion strength
The double-faced pressure-sensitive adhesive sheet that has stripping film for both sides, under 23 ℃, the environment of 50%RH, the adhering agent layer of removing the stripping film of a side and exposing is fitted on the pet film that thickness is 25 μ m, the adhering agent layer that to remove the stripping film of opposite side simultaneously and expose is adhered on the corrosion resistant plate, measures the 180 ° peel adhesion (N/25mm) of stickup after 24 hours according to JIS Z 0237.
(2) exhaust generation
With 20cm
2Sample be sealed in the ampoule bottle, this ampoule bottle is placed purge and trap-gas chromatography/mass spectrometry (Purge﹠amp; Trap GC Mass) [Japanese Electricity industry (strain) system, " JHS-100A "], heat 10min down at 120 ℃, collect gas, import GC Mass (PERKIN ELMER system, " Turbo Mass ") then, utilize the calibration curve that uses n-decane to make to obtain gas flow (the μ g/cm of the generation of the amount that is scaled n-decane
2).
In addition, the weight average molecular weight in each implementation column is meant the weight average molecular weight of measuring by gel permeation chromatography (GPC) that is scaled polystyrene.
Embodiment 1
(1) configuration of adhesion agent composition solution
By in as the methyl acrylate of the n-butyl acrylate of 97.4 mass parts of (A) composition and 2.0 mass parts and the mixture that constituted as the acrylic acid 2-hydroxy methacrylate of 0.6 mass parts of (B) composition, add azodiisobutyronitrile in the reactor as 0.1 mass parts of initiators for polymerization, ethyl acetate as 150 mass parts of solvent, warming while stirring is to 80-90 ℃, carry out polymerization reaction, then, the azodiisobutyronitrile of 0.1 mass parts is dissolved in the toluene of 10 mass parts and makes polymerization catalyzed agent solution, add on one side this polymerization catalyzed agent solution gradually, one side polymerase 17 hour.After reaction finishes, append retarder thinner (mixed solvent of toluene and ethyl acetate), make weight average molecular weight thus and be the solution of 40 quality % of 500,000 the acrylic acid series copolymer that does not contain carboxyl.
In these acrylic acid series copolymer solution 100 mass parts (solid constituent is 40 mass parts), the toluene di-isocyanate(TDI) (TDI) that adds 1 mass parts is crosslinking agent (" コ ロ ネ one ト L55E ", Japan Port リ ウ レ タ Application society system, solid constituent is 55 quality %), be mixed with adhesion agent composition solution.
(2) preparation of double-faced pressure-sensitive adhesive sheet
Use one side implement the pet film that thickness after the lift-off processing is 38 μ m [Mitsubishi's Port リ エ ス テ Le Off イ Le system society's system " T100 ") as stripping film, with resulting adhesion agent composition solution coat in above-mentioned (1) in the lift-off processing face, making dried thickness is 9 μ m, descended dry 2 minutes at 120 ℃ then, form adhering agent layer.The pet film (East レ society system " S10 ") that then with thickness is 12 μ m is pasted on the sticker aspect as substrate, makes single face adhesion sheet.
In addition, on the pet film (aforementioned) of other lift-off processing, carry out lamination with same operation, making dried thickness is 9 μ m, PET film (thickness the is 12 μ m) face of the single face adhesion sheet before fitting in the adhesion agent composition surface makes double-faced pressure-sensitive adhesive sheet.
Shown in the performance table 1 of this double-faced pressure-sensitive adhesive sheet.
Embodiment 2
(1) preparation of adhesion agent composition solution
Remove use by the n-butyl acrylate of 79.0 mass parts of conduct (A) composition and the methyl acrylate of 2.0 mass parts; replace by outside the mixture that is constituted as the methyl acrylate of the n-butyl acrylate of 97.4 mass parts of (A) composition and 2.0 mass parts and as the acrylic acid 2-hydroxy methacrylate of 0.6 mass parts of (B) composition as the acrylic acid 2-hydroxy methacrylate of 2.0 mass parts of (B) composition and as the mixture that the N-acryloyl morpholine of 17.0 mass parts of (C) composition is formed; fully similarly implement with embodiment 1 [preparation of (1) adhesion agent composition solution], make adhesion agent composition solution.
(2) preparation of double-faced pressure-sensitive adhesive sheet
Except that using above-mentioned (1) resulting adhesion agent composition solution, fully similarly implement with embodiment 1 [preparation of (2) double-faced pressure-sensitive adhesive sheet], make double-faced pressure-sensitive adhesive sheet.
The performance of this double-faced pressure-sensitive adhesive sheet is as shown in table 1.
Embodiment 3,4 and comparative example 1,2
Use the kind shown in the table 1 and the copolymer composition of amount, prepare adhesion agent composition solution similarly to Example 1, and then make double-faced pressure-sensitive adhesive sheet.
The performance of each double-faced pressure-sensitive adhesive sheet is as shown in table 1.
Removing used thickness is pet film (East レ society's system " F53 " of 6.3 μ m) as substrate, and the thickness that makes adhering agent layer for (single face 4 μ m, single face 4 μ m) in addition, make double-faced pressure-sensitive adhesive sheet similarly to Example 2.
Utilizing carbon dioxide laser to have at double faced adhesive and forming the aperture on the double-faced pressure-sensitive adhesive sheet of prepared stripping film is that 50 μ m, hole density are 200/10cm
2Through hole, make double-faced pressure-sensitive adhesive sheet with through hole.
The performance of this double-faced pressure-sensitive adhesive sheet is as shown in table 1.
Table 1
Can confirm from The above results: resulting adhesion sheet demonstrates high adhesion strength the embodiment.In addition, can confirm that also the exhaust generation is also very low.
In addition, from embodiment 5, as can be seen,,, also can easily be pasted on by on the bur and can not blast air by through hole is set even substrate is very thin, also very thin double-faced pressure-sensitive adhesive sheet on the whole.
On the other hand, surpass in 4 the acrylic acid alkyl ester units and acrylic acid comparative example at the carbon number that has used alkyl, the exhaust generation is more.
Industrial applicibility
Double-faced pressure-sensitive adhesive sheet of the present invention, the exhaust generation is few, and has high adhesion rerum natura, can be used for being fixed for removing the inner space that is present in EL element and the parts of removing that this EL element caused dysgenic gas componant.
Claims (8)
1. double-faced pressure-sensitive adhesive sheet, this double-faced pressure-sensitive adhesive sheet is used for fixing removing parts, describedly remove the set gas componant that parts are used to remove the inner space that is present in electroluminescent cell, it is characterized in that, has adhering agent layer substrate two-sided, the sticker that constitutes each adhering agent layer contains the not cross-linking products of carboxylic acrylic acid series copolymer, and described not carboxylic acrylic acid series copolymer contains: (A) carbon number of alkyl is (methyl) acrylic acid alkyl ester units below 4 and the ethylenically unsaturated monomers unit that (B) contains reactive functional groups.
2. double-faced pressure-sensitive adhesive sheet according to claim 1, wherein, (A) unit in the described not carboxylic acrylic acid series copolymer and (B) the content ratio of unit by quality ratio, are 95: 5 to 99.5: 0.5.
3. double-faced pressure-sensitive adhesive sheet according to claim 1, wherein, described not carboxylic acrylic acid series copolymer also contains: the morpholine based compound unit that (C) contains the ethylenic unsaturated group.
4. double-faced pressure-sensitive adhesive sheet according to claim 3, wherein, with respect to (A) unit and (B) total amount 100 mass parts of unit, the content of described (C) unit is the 2-30 mass parts.
5. double-faced pressure-sensitive adhesive sheet according to claim 1, wherein, the ethylenically unsaturated monomers unit that described (B) contains reactive functional groups is the ethylenically unsaturated monomers unit that contains hydroxyl.
6. double-faced pressure-sensitive adhesive sheet according to claim 1 wherein, at 120 ℃ of exhaust generations that heat 10 minutes down, to be scaled n-decane, is less than 0.5 μ g/cm
2
7. double-faced pressure-sensitive adhesive sheet according to claim 1, wherein, the thickness of described adhering agent layer is two-layer to be added up to below the 25 μ m.
8. double-faced pressure-sensitive adhesive sheet according to claim 1, wherein, being formed with the aperture from one deck adhering agent layer to other one deck adhering agent layer is that 20-200 μ m, hole density are 30-10000/10cm
2Through hole.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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JP2007233087A JP5231774B2 (en) | 2007-09-07 | 2007-09-07 | Double-sided adhesive sheet |
JP2007-233087 | 2007-09-07 | ||
PCT/JP2008/065677 WO2009031498A1 (en) | 2007-09-07 | 2008-09-01 | Double-faced pressure-sensitive adhesive sheet |
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CN101766053A true CN101766053A (en) | 2010-06-30 |
CN101766053B CN101766053B (en) | 2011-12-21 |
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CN2008801002524A Active CN101766053B (en) | 2007-09-07 | 2008-09-01 | Double-faced adhesive sheet |
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JP (1) | JP5231774B2 (en) |
KR (1) | KR101531727B1 (en) |
CN (1) | CN101766053B (en) |
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WO (1) | WO2009031498A1 (en) |
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- 2008-09-01 KR KR1020107000673A patent/KR101531727B1/en active IP Right Grant
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Also Published As
Publication number | Publication date |
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TWI482833B (en) | 2015-05-01 |
KR101531727B1 (en) | 2015-06-25 |
KR20100066431A (en) | 2010-06-17 |
CN101766053B (en) | 2011-12-21 |
WO2009031498A1 (en) | 2009-03-12 |
JP2009062486A (en) | 2009-03-26 |
JP5231774B2 (en) | 2013-07-10 |
TW200918635A (en) | 2009-05-01 |
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