TWI754307B - Adhesive layer for optical film, adhesive film for optical film, and adhesive composition for optical film for manufacturing the same - Google Patents
Adhesive layer for optical film, adhesive film for optical film, and adhesive composition for optical film for manufacturing the same Download PDFInfo
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- C—CHEMISTRY; METALLURGY
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- 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
- C09J133/068—Copolymers with monomers not covered by C09J133/06 containing glycidyl groups
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- 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
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- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- 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
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- 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
- C09J133/08—Homopolymers or copolymers of acrylic acid esters
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- 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
- C09J133/10—Homopolymers or copolymers of methacrylic acid esters
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- 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
- C09J133/10—Homopolymers or copolymers of methacrylic acid esters
- C09J133/12—Homopolymers or copolymers of methyl methacrylate
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- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/255—Polyesters
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- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
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- C—CHEMISTRY; METALLURGY
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- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
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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
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- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
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- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Polarising Elements (AREA)
- Adhesive Tapes (AREA)
- Liquid Crystal (AREA)
- Electroluminescent Light Sources (AREA)
- Laminated Bodies (AREA)
Abstract
Description
本發明涉及一種光學薄膜用黏著劑層、光學薄膜用黏著薄膜及用於製備它們的光學薄膜用黏著劑組合物。更具體而言，涉及一種用於貼合組裝至圖像顯示裝置中的光學薄膜的、具有優異耐熱性及耐久性的光學薄膜用黏著劑層、光學薄膜用黏著薄膜及用於製備它們的光學薄膜用黏著劑組合物。The present invention relates to an adhesive layer for optical films, an adhesive film for optical films and an adhesive composition for optical films used for preparing them. More specifically, it relates to an adhesive layer for an optical film having excellent heat resistance and durability, an adhesive film for an optical film, and an optical film for preparing the same for laminating an optical film assembled into an image display device. Adhesive composition for films.
近年來，在各種圖像顯示裝置中，使用有各種光學薄膜。例如以提高對比、防止外光的反射等為目的，使用有偏光薄膜、相位差薄膜等光學薄膜。為了將這些光學薄膜貼合於液晶面板或有機EL（電致發光）面板等的被黏著體上，提出有各種黏著薄膜（例如，參考專利文獻1）。此外，已知在有機EL面板的背面的反射層與偏光薄膜之間，通過配置一片相對偏光薄膜的偏光軸角度為-45°的1/4λ相位差薄膜，或配置一片-15°的1/2λ相位差薄膜及一片-75°的1/4λ相位差薄膜，能夠抑制外光的反射。 [現有技術文獻] [專利文獻]In recent years, various optical films have been used in various image display devices. For example, for the purpose of improving contrast and preventing reflection of external light, optical films such as polarizing films and retardation films are used. In order to bond these optical films to adherends, such as a liquid crystal panel and an organic EL (electroluminescence) panel, various adhesive films are proposed (for example, refer patent document 1). In addition, it is known that between the reflective layer and the polarizing film on the back of the organic EL panel, a 1/4λ retardation film with a polarization axis angle of -45° relative to the polarizing film is arranged, or a 1/4 λ retardation film with a -15° angle is arranged. 2λ retardation film and a -75° 1/4λ retardation film can suppress the reflection of external light. [Prior Art Literature] [Patent Literature]
專利文獻1：日本特開2012-201734號公報Patent Document 1: Japanese Patent Laid-Open No. 2012-201734
[本發明要解決的技術問題][Technical problem to be solved by the present invention]
如上所述，為了防止有機EL面板的來自外光的反射，在偏光薄膜與有機EL面板之間設有逆波長分散（波長越長則雙折射越大）的1/4λ的相位差薄膜。此外，在現有技術中，作為1/4λ的相位差薄膜，廣泛使用材質為聚碳酸酯類薄膜的相位差薄膜。但是，在使用聚碳酸酯類薄膜的情況下，存在無法抑制來自聚碳酸酯的放出氣體所致的發泡的問題。As described above, in order to prevent reflection of external light from the organic EL panel, a 1/4λ retardation film with reverse wavelength dispersion (longer wavelength increases birefringence) is provided between the polarizing film and the organic EL panel. In addition, in the prior art, as a 1/4λ retardation film, a retardation film made of a polycarbonate-based film is widely used. However, when a polycarbonate-based film is used, there is a problem that foaming due to outgassing from polycarbonate cannot be suppressed.
本發明是鑒於上述情況而成的，其技術問題在於提供一種用於貼合組裝至圖像顯示裝置中的光學薄膜的、具有優異耐熱性及耐久性的光學薄膜用黏著劑層、光學薄膜用黏著薄膜及用於製備它們的光學薄膜用黏著劑組合物。 [解決技術問題的技術手段]The present invention has been made in view of the above-mentioned circumstances, and its technical problem is to provide an adhesive layer for an optical film and an adhesive layer for an optical film having excellent heat resistance and durability, which are used for bonding an optical film to be assembled in an image display device. Adhesive films and adhesive compositions for optical films used to prepare them. [Technical means to solve technical problems]
為了解決上述技術問題，本發明的技術思想在於，通過將由如下共聚物構成的丙烯酸類聚合物作為交聯的黏著劑層，從而得到具有優異耐熱性及耐久性的黏著劑層，所述共聚物為使下述成分共聚而成的Tg為-60℃以上-30℃以下的共聚物：總量100重量份由烷基碳原子數為C1 ~C14 的烷基（甲基）丙烯酸酯單體、具有芳香族基的（甲基）丙烯酸酯單體、含氮乙烯基單體所構成單體組中選擇的至少兩種以上的單體、0.1~10.0重量份含羧基的共聚性乙烯基單體、0.05~4.5重量份含羥基的共聚性乙烯基單體。In order to solve the above-mentioned technical problems, the technical idea of the present invention is to obtain an adhesive layer having excellent heat resistance and durability by using an acrylic polymer composed of the following copolymer as a crosslinked adhesive layer. A copolymer with a Tg of -60°C or higher and -30°C or lower, which is obtained by copolymerizing the following components: a total of 100 parts by weight of an alkyl (meth)acrylate monolayer having an alkyl carbon number of C 1 to C 14 monomers, (meth)acrylate monomers having an aromatic group, at least two or more monomers selected from the monomer group consisting of nitrogen-containing vinyl monomers, and 0.1 to 10.0 parts by weight of carboxyl group-containing copolymerizable vinyl groups Monomer, 0.05-4.5 parts by weight of hydroxyl group-containing copolymerizable vinyl monomer.
為了解決上述技術問題，本發明提供一種光學薄膜用黏著劑組合物，其含有丙烯酸類聚合物與交聯性化合物，其特徵在於，所述丙烯酸類聚合物由下述成分共聚而成的Tg為-60℃以上-30℃以下的共聚物構成：總量100重量份（A）選自由烷基碳原子數為C1 ~C14 的（甲基）丙烯酸烷基酯單體（a1）、具有芳香族基的（甲基）丙烯酸酯單體（a2）、含氮乙烯基單體（a3）所構成的單體組中的至少兩種以上的單體、0.1~10.0重量份（B）含羧基的共聚性乙烯基單體、0.05~4.5重量份（C）含羥基的共聚性乙烯基單體，其中，屬於所述（a1）的單體中的一種為51重量份以上95重量份以下，選自由所述（a1）~（a3）所構成的單體組中的另一種以上的單體的總量為5重量份以上49重量份以下，且它們的總量為100重量份。In order to solve the above-mentioned technical problems, the present invention provides an adhesive composition for optical films, which contains an acrylic polymer and a crosslinkable compound, and is characterized in that the Tg of the acrylic polymer obtained by copolymerizing the following components is: -60°C or higher -30°C or lower copolymer composition: 100 parts by weight in total (A) is selected from the (meth)acrylic acid alkyl ester monomer (a1) having an alkyl carbon number of C 1 to C 14 , having At least two or more monomers in the monomer group consisting of an aromatic (meth)acrylate monomer (a2) and a nitrogen-containing vinyl monomer (a3), 0.1 to 10.0 parts by weight (B) containing Carboxyl group copolymerizable vinyl monomer, 0.05 to 4.5 parts by weight (C) hydroxyl group-containing copolymerizable vinyl monomer, wherein one of the monomers belonging to (a1) is 51 parts by weight to 95 parts by weight , the total amount of one or more monomers selected from the monomer group consisting of the above (a1) to (a3) is 5 parts by weight to 49 parts by weight, and their total amount is 100 parts by weight.
所述交聯性化合物為2官能基以上的環氧類化合物，相對於所述（a1）~（a3）所構成的單體組中選擇的至少兩種以上的單體的總量100重量份，以含有0.001~0.5重量份所述交聯性化合物為佳。The crosslinkable compound is an epoxy compound with a bifunctional or more functional group, and is 100 parts by weight relative to the total amount of at least two or more monomers selected from the monomer group constituted by the above (a1) to (a3). , it is better to contain 0.001 to 0.5 parts by weight of the cross-linking compound.
共聚成所述丙烯酸類聚合物的所述（B）含羧基的共聚性乙烯基單體以由（甲基）丙烯酸、羧基乙基（甲基）丙烯酸酯、羧基戊基（甲基）丙烯酸酯、2-（甲基）丙烯醯氧基乙基六氫鄰苯二甲酸、2-（甲基）丙烯醯氧基乙基鄰苯二甲酸、2-（甲基）丙烯醯氧基乙基琥珀酸、2-（甲基）丙烯醯氧基乙基馬來酸、羧基聚己內酯單（甲基）丙烯酸酯、2-（甲基）丙烯醯氧基乙基四氫鄰苯二甲酸所構成的化合物組中選擇的至少一種以上，共聚於所述丙烯酸類聚合物中的所述（C）含羥基的共聚性乙烯基單體為由（甲基）丙烯酸8-羥基辛酯、（甲基）丙烯酸6-羥基己酯、（甲基）丙烯酸4-羥基丁酯、（甲基）丙烯酸2-羥基丙酯、（甲基）丙烯酸2-羥基乙酯、N-羥基（甲基）丙烯醯胺、N-羥基甲基（甲基）丙烯醯胺、N-羥基乙基（甲基）丙烯醯胺所構成的化合物組中選擇的至少一種以上為佳。The (B) carboxyl group-containing copolymerizable vinyl monomer copolymerized into the acrylic polymer is composed of (meth)acrylic acid, carboxyethyl (meth)acrylate, carboxypentyl (meth)acrylate , 2-(meth)acryloyloxyethylhexahydrophthalic acid, 2-(meth)acryloyloxyethylphthalic acid, 2-(meth)acryloyloxyethylsuccinic acid acid, 2-(meth)acryloyloxyethylmaleic acid, carboxypolycaprolactone mono(meth)acrylate, 2-(meth)acryloyloxyethyltetrahydrophthalic acid At least one or more selected from the compound group constituted, and the (C) hydroxyl group-containing copolymerizable vinyl monomer to be copolymerized in the acrylic polymer is composed of 8-hydroxyoctyl (meth)acrylate, (meth)acrylate base) 6-hydroxyhexyl acrylate, 4-hydroxybutyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 2-hydroxyethyl (meth)acrylate, N-hydroxy(meth)propylene At least one or more selected from the group consisting of amides, N-hydroxymethyl(meth)acrylamides, and N-hydroxyethyl(meth)acrylamides are preferred.
共聚成所述丙烯酸類聚合物的所述（a2）具有芳香族基的（甲基）丙烯酸酯單體以由苄基（甲基）丙烯酸酯、萘基（甲基）丙烯酸酯、苯氧基乙基（甲基）丙烯酸酯、苯氧基丁基（甲基）丙烯酸酯、苯氧基二乙二醇（甲基）丙烯酸酯、2-(1-萘氧基)乙基（甲基）丙烯酸酯、6-(1-萘氧基)己基（甲基）丙烯酸酯、6-(2-萘氧基)己基（甲基）丙烯酸酯、8-(1-萘氧基)辛基（甲基）丙烯酸酯、8-(2-萘氧基)辛基（甲基）丙烯酸酯所構成的化合物組中選擇的至少一種以上為佳。The (a2) (meth)acrylate monomer having an aromatic group copolymerized into the acrylic polymer is composed of benzyl (meth)acrylate, naphthyl (meth)acrylate, phenoxy Ethyl (meth)acrylate, phenoxybutyl (meth)acrylate, phenoxydiethylene glycol (meth)acrylate, 2-(1-naphthoxy)ethyl (meth) Acrylate, 6-(1-Naphthyloxy)hexyl(meth)acrylate, 6-(2-naphthyloxy)hexyl(meth)acrylate, 8-(1-naphthyloxy)octyl(methyl)acrylate At least one or more selected from the compound group consisting of 8-(2-naphthyloxy)octyl(meth)acrylate and 8-(2-naphthyloxy)octyl(meth)acrylate is preferred.
此外，本發明提供一種光學薄膜用黏著劑層，其特徵在於，所述光學薄膜用黏著劑組合物交聯而成的光學薄膜用黏著劑層的凝膠分率為60~90%，所述光學薄膜用黏著劑層的厚度為5~25μm。In addition, the present invention provides an adhesive layer for optical films, characterized in that the adhesive layer for optical films obtained by crosslinking the adhesive composition for optical films has a gel fraction of 60 to 90%, and the The thickness of the adhesive layer for optical films is 5 to 25 μm.
此外，本發明提供一種光學薄膜用黏著劑層，其特徵在於，在由聚碳酸酯樹脂薄膜構成的相位差薄膜的兩面上，轉印由所述光學薄膜用黏著劑組合物交聯而成的光學薄膜用黏著劑層，並且，將在其單面上貼合偏光薄膜而成的帶有黏著劑層的光學薄膜的積層體貼合於無鹼玻璃，然後在85℃乾燥氣氛下保存200小時後，取出置於23℃×50%RH氣氛下1小時後進行觀察，其具有不發泡的耐久性。In addition, the present invention provides an adhesive layer for optical films, characterized in that a film cross-linked from the adhesive composition for optical films is transferred on both surfaces of a retardation film made of a polycarbonate resin film. An adhesive layer for optical films, and a laminate of an optical film with an adhesive layer, which is obtained by laminating a polarizing film on one side, is attached to an alkali-free glass, and then stored in a dry atmosphere at 85°C for 200 hours , taken out and placed in a 23 ℃ × 50% RH atmosphere for 1 hour to observe, it has no foaming durability.
此外，本發明提供一種光學薄膜用黏著薄膜，其特徵在於，所述光學薄膜用黏著劑組合物塗佈在離型薄膜的單面上，形成光學薄膜用黏著劑層，為離型薄膜/光學薄膜用黏著劑層/離型薄膜的結構。In addition, the present invention provides an adhesive film for optical films, characterized in that the adhesive composition for optical films is coated on one side of the release film to form an adhesive layer for optical films, which is a release film/optical film Structure of adhesive layer/release film for film.
此外，本發明提供一種光學薄膜用黏著薄膜，其特徵在於，在基材的單面上，積層由所述光學薄膜用黏著劑組合物交聯而成的光學薄膜用黏著劑層。Furthermore, the present invention provides an adhesive film for an optical film, wherein an adhesive layer for an optical film crosslinked by the adhesive composition for an optical film is laminated on one side of a substrate.
此外，本發明提供一種圖像顯示裝置，其中，將所述光學薄膜用黏著劑組合物交聯而成光學薄膜用黏著劑層用於光學薄膜的貼合。Further, the present invention provides an image display device in which the adhesive layer for optical films obtained by crosslinking the adhesive composition for optical films is used for bonding of optical films.
此外，本發明提供一種帶有黏著劑層的偏光板，其中，使用了由所述光學薄膜用黏著劑組合物交聯而成的光學薄膜用黏著劑層。Moreover, this invention provides the polarizing plate with an adhesive bond layer which used the adhesive bond layer for optical films crosslinked by the said adhesive bond composition for optical films.
此外，本發明提供一種帶有黏著劑層的偏光板，其使用了由所述光學薄膜用黏著劑組合物交聯而成的光學薄膜用黏著劑層，作為構成材料使用了帶有1/4λ的相位差的相位差薄膜。In addition, the present invention provides a polarizing plate with an adhesive layer, which uses the adhesive layer for optical films cross-linked from the adhesive composition for optical films, and uses as a constituent material a polarizing plate with a 1/4λ The retardation film of the retardation.
此外，本發明提供一種帶有黏著劑層的光學薄膜，其在光學薄膜的至少一個面上，積層有由所述光學薄膜用黏著劑組合物交聯而成的光學薄膜用黏著劑層。 [發明效果]Furthermore, the present invention provides an optical film with an adhesive layer in which an adhesive layer for an optical film crosslinked by the adhesive composition for an optical film is laminated on at least one surface of the optical film. [Inventive effect]
根據本發明，通過使下述共聚物構成的丙烯酸類聚合物交聯形成黏著劑層，可提供具有優異耐熱性及耐久性的光學薄膜用黏著劑層、光學薄膜用黏著薄膜及用於它們的光學薄膜用黏著劑組合物，所述共聚物為：使總量100重量份的由選自（甲基）丙烯酸烷基酯單體、具有芳香族基的（甲基）丙烯酸酯單體、含氮乙烯基單體所構成單體組中的至少兩種以上、0.1~10.0重量份含羧基的共聚性乙烯基單體、0.05~4.5重量份含羥基的共聚性乙烯基單體共聚而成的Tg為-60℃以上-30℃以下的共聚物。 此外，在由聚碳酸酯樹脂薄膜構成的相位差薄膜的兩面上，轉印本發明的光學薄膜用黏著劑層，並且，將在其單面上貼合偏光薄膜而成的帶有黏著劑層的光學薄膜的積層體貼合於無鹼玻璃後，在85℃乾燥氣氛下保存200小時後，取出置於23℃×50%RH氣氛下1小時後進行觀察，其具有不發泡的耐久性。因此，本發明的光學薄膜用黏著劑層在由聚碳酸酯樹脂薄膜構成的相位差薄膜的貼合中能夠發揮極其優異的作用。According to the present invention, by crosslinking an acrylic polymer composed of the following copolymer to form an adhesive layer, it is possible to provide an adhesive layer for optical films, an adhesive film for optical films, and an adhesive for the same having excellent heat resistance and durability. An adhesive composition for an optical film, wherein the copolymer is composed of a total amount of 100 parts by weight selected from the group consisting of (meth)acrylic acid alkyl ester monomers, (meth)acrylic acid ester monomers having an aromatic group, containing At least two or more of the monomer group composed of nitrogen vinyl monomers, 0.1~10.0 parts by weight of carboxyl group-containing copolymerizable vinyl monomers, and 0.05~4.5 weight parts of hydroxyl group-containing copolymerizable vinyl monomers. Tg is a copolymer of -60°C or higher and -30°C or lower. In addition, the adhesive layer for an optical film of the present invention is transferred on both sides of the retardation film composed of a polycarbonate resin film, and a polarizing film is attached to one side of the adhesive layer with an adhesive layer. The laminate of the optical film was bonded to alkali-free glass, stored in a dry atmosphere at 85°C for 200 hours, taken out and placed in an atmosphere of 23°C x 50% RH for 1 hour and observed. It has durability without foaming. Therefore, the pressure-sensitive adhesive layer for an optical film of the present invention can exert an extremely excellent function in laminating a retardation film composed of a polycarbonate resin film.
以下基於較佳的實施方式對本發明進行說明。 本發明的光學薄膜用黏著劑組合物含有丙烯酸類聚合物及交聯性化合物。使該光學薄膜用黏著劑組合物進行交聯，形成本發明的光學薄膜用黏著劑層。本發明的光學薄膜用黏著劑組合物含有丙烯酸類聚合物及交聯性化合物，所述丙稀酸類聚合物由以下述成分共聚而成的Tg為-60℃以上-30℃以下的共聚物構成，所述成分為：總量100重量份（A）選自由烷基的碳原子數為C1 ~C14 的（甲基）丙烯酸烷基酯單體（a1）、具有芳香族基的（甲基）丙烯酸酯單體（a2）、含氮乙烯基單體（a3）所構成的單體組中的至少兩種以上、0.1~10.0重量份（B）含羧基的共聚性乙烯基單體、0.05~4.5重量份（C）含羥基的共聚性乙烯基單體，其中，屬於所述（a1）的單體中的一種為51重量份以上95重量份以下，選自由所述（a1）~（a3）所構成的單體組中的另一種以上的單體的總量為5重量份以上49重量份以下，且它們的總量為100重量份。 此外，本發明的光學薄膜用黏著劑層在由聚碳酸酯樹脂薄膜構成的相位差薄膜的兩面上，轉印光學薄膜用黏著劑層，並且，將在其單面上貼合偏光薄膜而成的帶有黏著劑層的光學薄膜的積層體貼合於無鹼玻璃，然後在85℃乾燥氣氛下保存200小時後，取出置於23℃×50%RH氣氛下1小時後進行觀察，其具有不發泡的耐久性。The present invention will be described below based on preferred embodiments. The adhesive composition for optical films of this invention contains an acrylic polymer and a crosslinkable compound. This adhesive composition for optical films is crosslinked, and the adhesive layer for optical films of this invention is formed. The adhesive composition for optical films of the present invention contains an acrylic polymer and a crosslinkable compound, wherein the acrylic polymer is composed of a copolymer having a Tg of -60°C or higher and -30°C or lower, which is copolymerized with the following components , the components are: a total of 100 parts by weight (A) selected from alkyl (meth)acrylic acid alkyl ester monomers (a1) with an alkyl group whose carbon number is C 1 ~C 14 , (methyl) having an aromatic group 0.1 to 10.0 parts by weight (B) carboxyl group-containing copolymerizable vinyl monomer, 0.05 to 4.5 parts by weight of (C) a hydroxyl group-containing copolymerizable vinyl monomer, wherein one of the monomers belonging to the (a1) is 51 parts by weight to 95 parts by weight, selected from the above (a1) ~ The total amount of the other or more monomers in the monomer group constituted by (a3) is 5 parts by weight or more and 49 parts by weight or less, and the total amount thereof is 100 parts by weight. In addition, the adhesive layer for optical films of the present invention is formed by transferring the adhesive layer for optical films on both sides of a retardation film made of a polycarbonate resin film, and laminating a polarizing film on one side of the adhesive layers. The laminated body of the optical film with an adhesive layer was attached to alkali-free glass, and then stored in a dry atmosphere at 85°C for 200 hours, taken out and placed in an atmosphere of 23°C × 50% RH for 1 hour for observation. Durability of foam.
本發明的光學薄膜用黏著劑組合物的丙烯酸類聚合物為由選自隸屬屬於（A）組的單體（主成分單體）的化合物組中的兩種以上、分別選自隸屬屬於（B）組及（C）組的單體（官能基團單體）的化合物組中的一種以上共聚得到的共聚物。作為屬於（A）組的單體，可使用由烷基碳原子數為C1 ~C14 的（甲基）丙烯酸烷基酯單體（a1）、具有芳香族基的（甲基）丙烯酸酯單體（a2）、含氮乙烯基單體（a3）所構成的單體組中選擇的至少兩種以上。此外，作為屬於（B）組的單體，可使用含羧基的共聚性乙烯基單體中的至少一種以上，作為屬於（C）組的單體，可使用含羥基的共聚性乙烯基單體中的至少一種以上。在本說明書中，（甲基）丙烯酸酯為丙烯酸酯及甲基丙烯酸酯的總稱。The acrylic polymer of the adhesive composition for optical films of the present invention is composed of two or more kinds of compounds selected from the group of monomers (main component monomers) belonging to the group (A), respectively selected from the group of compounds belonging to the group (B). ) group and (C) group of monomers (functional group monomers) of the compound group of one or more copolymers obtained by copolymerizing. As the monomer belonging to the (A) group, (meth)acrylic acid alkyl ester monomer (a1) having an alkyl group having C 1 to C 14 carbon atoms, (meth)acrylic acid ester having an aromatic group can be used At least two or more selected from the monomer group consisting of the monomer (a2) and the nitrogen-containing vinyl monomer (a3). In addition, as the monomer belonging to the (B) group, at least one or more of carboxyl group-containing copolymerizable vinyl monomers can be used, and as the monomer belonging to the (C) group, a hydroxyl group-containing copolymerizable vinyl monomer can be used. at least one of them. In this specification, (meth)acrylate is a general term for acrylate and methacrylate.
在本發明的光學薄膜用黏著劑層的黏著劑組合物中，作為屬於（A）組的（a1）烷基碳原子數為C1 ~C14 的（甲基）丙烯酸烷基酯單體，可列舉出由（甲基）丙烯酸甲酯、（甲基）丙烯酸乙酯、（甲基）丙烯酸丙酯、（甲基）丙烯酸異丙酯、（甲基）丙烯酸丁酯、（甲基）丙烯酸異丁酯、（甲基）丙烯酸叔丁酯、（甲基）丙烯酸戊酯、（甲基）丙烯酸異戊酯、（甲基）丙烯酸己酯、（甲基）丙烯酸異己酯、（甲基）丙烯酸庚酯、（甲基）丙烯酸異庚酯、（甲基）丙烯酸辛酯、（甲基）丙烯酸異辛酯、（甲基）丙烯酸2-乙基己酯、（甲基）丙烯酸壬酯、（甲基）丙烯酸異壬酯、（甲基）丙烯酸癸酯、（甲基）丙烯酸異癸酯、（甲基）丙烯酸十一烷酯、（甲基）丙烯酸異十一烷酯、（甲基）丙烯酸十二烷酯、（甲基）丙烯酸異十二烷酯、（甲基）丙烯酸十三烷酯、（甲基）丙烯酸異十三烷酯、（甲基）丙烯酸十四烷酯、（甲基）丙烯酸異十四烷酯所構成的化合物組中選擇的至少一種以上。（甲基）丙烯酸烷基酯單體的烷基可以是直鏈、支鏈、環狀（脂環族）。 本發明的光學薄膜用黏著劑組合物的丙烯酸類聚合物，在屬於（A）組的（a1）~（a3）所構成的單體組中選擇的至少兩種以上的單體的總量100重量份中，較佳以51重量份以上95重量份以下的比例含有（a1）烷基碳原子數為C1 ~C14 的（甲基）丙烯酸烷基酯單體所構成的化合物組中選擇的單體的一種。 此外，（a1）烷基碳原子數為C1 ~C14 的（甲基）丙烯酸烷基酯單體為在化工領域中大量使用的極其普通的化合物，因此容易獲得，為價格較低廉的材料，是一種能夠用於有效控制作為產品的黏著劑組合物的製造成本的化合物。 此外，（a1）烷基碳原子數為C1 ~C14 的（甲基）丙烯酸烷基酯單體包括大量聚合物的玻璃化轉變溫度（Tg）為-30℃以下的化合物，因此作為調整本發明光學薄膜用黏著劑層的物性的方法，從容易選擇的方面來看，是一種利用價值高的化合物。In the adhesive composition of the adhesive layer for an optical film of the present invention, as the (a1) alkyl (meth)acrylate monomer having an alkyl carbon number of C 1 to C 14 belonging to the (A) group, Examples include methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, isopropyl (meth)acrylate, butyl (meth)acrylate, and (meth)acrylic acid. Isobutyl, tert-butyl (meth)acrylate, amyl (meth)acrylate, isoamyl (meth)acrylate, hexyl (meth)acrylate, isohexyl (meth)acrylate, (meth) Heptyl acrylate, isoheptyl (meth)acrylate, octyl (meth)acrylate, isooctyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, nonyl (meth)acrylate, isononyl (meth)acrylate, decyl (meth)acrylate, isodecyl (meth)acrylate, undecyl (meth)acrylate, isundecyl (meth)acrylate, (meth)acrylate ) dodecyl acrylate, isododecyl (meth)acrylate, tridecyl (meth)acrylate, isotridecyl (meth)acrylate, tetradecyl (meth)acrylate, ( At least one or more selected from the compound group consisting of isotetradecyl meth)acrylate. The alkyl group of the alkyl (meth)acrylate monomer may be linear, branched, or cyclic (alicyclic). In the acrylic polymer of the adhesive composition for optical films of the present invention, the total amount of at least two or more monomers selected from the monomer group consisting of (a1) to (a3) belonging to the (A) group is 100 In parts by weight, it is preferable to select from the group of compounds composed of (a1) alkyl (meth)acrylate monomers having an alkyl carbon number of C 1 to C 14 in a ratio of not less than 51 parts by weight and not more than 95 parts by weight. A kind of monomer. In addition, (a1) alkyl (meth)acrylate monomers with alkyl carbon atoms of C 1 to C 14 are extremely common compounds that are widely used in the chemical industry, so they are easy to obtain and are relatively inexpensive materials , is a compound that can be used to effectively control the manufacturing cost of the adhesive composition as a product. In addition, (a1) alkyl (meth)acrylate monomers with alkyl carbon atoms of C 1 to C 14 include compounds whose glass transition temperature (Tg) is -30°C or lower in a large number of polymers. Therefore, as adjustment The method of the physical properties of the adhesive layer for an optical film of the present invention is a compound with high utility value from the viewpoint of easy selection.
在本發明的光學薄膜用黏著劑層的黏著劑組合物中，作為屬於（A）組的、（a2）具有芳香族基的（甲基）丙烯酸酯單體，可列舉出由苄基（甲基）丙烯酸酯、萘基（甲基）丙烯酸酯、苯氧基乙基（甲基）丙烯酸酯、苯氧基丁基（甲基）丙烯酸酯、苯氧基二乙二醇（甲基）丙烯酸酯、2-(1-萘氧基)乙基（甲基）丙烯酸酯、2-(2-萘氧基)乙基（甲基）丙烯酸酯、6-(1-萘氧基)己基（甲基）丙烯酸酯、6-(2-萘氧基)己基（甲基）丙烯酸酯、8-(1-萘氧基)辛基（甲基）丙烯酸酯、8-(2-萘氧基)辛基（甲基）丙烯酸酯所構成的化合物組中選擇的至少一種以上。為了得到折射率高的光學薄膜用黏著劑層，較佳使具有芳香族基的（甲基）丙烯酸酯單體的中至少一種以上共聚於丙烯酸類聚合物中。 本發明的光學薄膜用黏著劑組合物的丙烯酸類聚合物，在屬於（A）組的（a1）~（a3）所構成的單體組中選擇的至少兩種以上的單體的總量100重量份中，能夠以0~30重量份的比例含有（a2）具有芳香族基的（甲基）丙烯酸酯單體。 此外，在本發明的丙烯酸類聚合物含有（a2）具有芳香族基的（甲基）丙烯酸酯單體的情況下，在屬於（A）組的（a1）~（a3）所構成的單體組中選擇的至少兩種以上的單體的總量100重量份中，更佳為以3~25重量份的比例含有，特佳為以8~20重量份的比例含有。In the pressure-sensitive adhesive composition of the pressure-sensitive adhesive layer for optical films of the present invention, the (a2) aromatic group-containing (meth)acrylate monomers belonging to the (A) group include benzyl (methyl) base) acrylate, naphthyl (meth)acrylate, phenoxyethyl (meth)acrylate, phenoxybutyl (meth)acrylate, phenoxydiethylene glycol (meth)acrylate ester, 2-(1-naphthoxy)ethyl(meth)acrylate, 2-(2-naphthoxy)ethyl(meth)acrylate, 6-(1-naphthoxy)hexyl(meth)acrylate base) acrylate, 6-(2-naphthyloxy)hexyl(meth)acrylate, 8-(1-naphthyloxy)octyl(meth)acrylate, 8-(2-naphthyloxy)octyl At least one or more selected from the group of compounds consisting of base (meth)acrylates. In order to obtain the adhesive layer for optical films with a high refractive index, it is preferable to copolymerize at least 1 type or more of the (meth)acrylate monomer which has an aromatic group in an acrylic polymer. In the acrylic polymer of the adhesive composition for optical films of the present invention, the total amount of at least two or more monomers selected from the monomer group consisting of (a1) to (a3) belonging to the (A) group is 100 (a2) The (meth)acrylate monomer which has an aromatic group can be contained in the ratio of 0-30 weight part in weight part. Moreover, when the acrylic polymer of the present invention contains (a2) an aromatic group-containing (meth)acrylate monomer, the monomers constituted by (a1) to (a3) belonging to the (A) group In 100 parts by weight of the total amount of at least two or more monomers selected from the group, it is more preferably contained in a ratio of 3 to 25 parts by weight, and particularly preferably contained in a ratio of 8 to 20 parts by weight.
在本發明的光學薄膜用黏著劑層的黏著劑組合物中，作為屬於（A）組的（a3）含氮乙烯基單體，可列舉出含有醯胺鍵的（甲基）丙烯酸類單體、含有氨基的（甲基）丙烯酸類單體等。更具體而言，可列舉出由N-（甲基）丙烯醯嗎啡啉、N-（甲基）丙烯醯呱嗪、N-（甲基）丙烯醯氮丙啶、N-（甲基）丙烯醯氮雜環丁烷、N-（甲基）丙烯醯吡咯烷、N-（甲基）丙烯醯呱啶、N-（甲基）丙烯醯氮雜環庚烷、N-（甲基）丙烯醯氮雜環辛烷等具有N-（甲基）丙烯醯取代的雜環結構的環狀氮乙烯基化合物；（甲基）丙烯醯胺、N-甲基（甲基）丙烯醯胺、N-異丙基（甲基）丙烯醯胺、N-叔丁基（甲基）丙烯醯胺等無取代或單烷基取代的（甲基）丙烯醯胺；N,N-二甲基（甲基）丙烯醯胺、N,N-二乙基（甲基）丙烯醯胺、N,N-二丙基丙烯醯胺、N,N-二異丙基（甲基）丙烯醯胺、N,N-二丁基（甲基）丙烯醯胺、N-乙基-N-甲基（甲基）丙烯醯胺、N-甲基-N-丙基（甲基）丙烯醯胺、N-甲基-N-異丙基（甲基）丙烯醯胺等二烷基取代的（甲基）丙烯醯胺；N,N-二甲基氨基甲基（甲基）丙烯酸酯、N,N-二甲基氨基乙基（甲基）丙烯酸酯、N,N-二甲基氨基丙基（甲基）丙烯酸酯、N,N-二甲基氨基異丙基（甲基）丙烯酸酯、N,N-二甲基氨基丁基（甲基）丙烯酸酯、N,N-二乙基氨基甲基（甲基）丙烯酸酯、N,N-二乙基氨基乙基（甲基）丙烯酸酯、N-乙基-N-甲基氨基乙基（甲基）丙烯酸酯、N-甲基-N-丙基氨基乙基（甲基）丙烯酸酯、N-甲基-N-異丙基氨基乙基（甲基）丙烯酸酯、N,N-二丁基氨基乙基（甲基）丙烯酸酯、叔丁基氨基乙基（甲基）丙烯酸酯等二烷基氨基（甲基）丙烯酸酯；N,N-二甲基氨基丙基（甲基）丙烯醯胺、N,N-二乙基氨基丙基（甲基）丙烯醯胺、N,N-二丙基氨基丙基（甲基）丙烯醯胺、N,N-二異丙基氨基丙基（甲基）丙烯醯胺、N-乙基-N-甲基氨基丙基（甲基）丙烯醯胺、N-甲基-N-丙基氨基丙基（甲基）丙烯醯胺、N-甲基-N-異丙基氨基丙基（甲基）丙烯醯胺等N,N-二烷基取代的氨基丙基（甲基）丙烯醯胺；（甲基）丙烯腈所構成的化合物組中選擇的至少一種以上。作為（a3）含氮乙烯基單體，較佳不含有羥基，更佳不含有羥基及羧基。 本發明的光學薄膜用黏著劑組合物的丙烯酸類聚合物，在屬於（A）組的（a1）~（a3）所構成的單體組中選擇的至少兩種以上的單體的總量100重量份中，能夠以0~20重量份的比例含有（a3）含氮乙烯基單體。 此外，在本發明的丙烯酸類聚合物含有（a3）含氮乙烯基單體的情況下，在屬於（A）組的（a1）~（a3）所構成的單體組中選擇的至少兩種以上的單體的總量100重量份中，更佳以2~20重量份的比例含有，特佳以2~12重量份的比例含有。In the adhesive composition of the adhesive layer for an optical film of the present invention, as the (a3) nitrogen-containing vinyl monomer belonging to the (A) group, an amide bond-containing (meth)acrylic monomer is exemplified , Amino-containing (meth)acrylic monomers, etc. More specifically, N-(meth)acrylomorphine, N-(meth)acrylocarbazine, N-(meth)acryloaziridine, N-(meth)propylene can be mentioned. Azetidine, N-(meth)acrylopyrrolidine, N-(meth)acrylopyridine, N-(meth)acrylazetane, N-(meth)propylene Cyclic azovinyl compounds having a heterocyclic structure substituted with N-(meth)acrylamide, such as azacyclooctane; (meth)acrylamide, N-methyl(meth)acrylamide, N -Isopropyl (meth)acrylamide, N-tert-butyl (meth)acrylamide and other unsubstituted or mono-alkyl substituted (meth)acrylamide; N,N-dimethyl (methyl) base) acrylamide, N,N-diethyl (meth) acrylamide, N,N-dipropyl acrylamide, N,N-diisopropyl (meth) acrylamide, N,N-diisopropyl (meth) acrylamide N-dibutyl(meth)acrylamide, N-ethyl-N-methyl(meth)acrylamide, N-methyl-N-propyl(meth)acrylamide, N-methyl Dialkyl-substituted (meth) acrylamides such as base-N-isopropyl (meth) acrylamide; N,N-dimethylaminomethyl (meth)acrylate, N,N-dialkyl Methylaminoethyl (meth)acrylate, N,N-Dimethylaminopropyl (meth)acrylate, N,N-Dimethylaminoisopropyl (meth)acrylate, N,N - Dimethylaminobutyl (meth)acrylate, N,N-diethylaminomethyl (meth)acrylate, N,N-diethylaminoethyl (meth)acrylate, N- Ethyl-N-methylaminoethyl (meth)acrylate, N-methyl-N-propylaminoethyl (meth)acrylate, N-methyl-N-isopropylaminoethyl ( Meth)acrylate, N,N-dibutylaminoethyl (meth)acrylate, tert-butylaminoethyl (meth)acrylate and other dialkylamino (meth)acrylates; N,N -Dimethylaminopropyl(meth)acrylamide, N,N-diethylaminopropyl(meth)acrylamide, N,N-dipropylaminopropyl(meth)acrylamide , N,N-diisopropylaminopropyl (meth)acrylamide, N-ethyl-N-methylaminopropyl (meth)acrylamide, N-methyl-N-propylamino N,N-dialkyl substituted aminopropyl(meth)acrylamides such as propyl(meth)acrylamides, N-methyl-N-isopropylaminopropyl(meth)acrylamides, etc. ; At least one or more selected from the compound group consisting of (meth)acrylonitrile. The nitrogen-containing vinyl monomer (a3) preferably does not contain a hydroxyl group, and more preferably does not contain a hydroxyl group and a carboxyl group. In the acrylic polymer of the adhesive composition for optical films of the present invention, the total amount of at least two or more monomers selected from the monomer group consisting of (a1) to (a3) belonging to the (A) group is 100 In parts by weight, the (a3) nitrogen-containing vinyl monomer can be contained in a ratio of 0 to 20 parts by weight. Further, when the acrylic polymer of the present invention contains (a3) a nitrogen-containing vinyl monomer, at least two selected from the monomer group consisting of (a1) to (a3) belonging to the (A) group In 100 parts by weight of the total amount of the above monomers, the content is more preferably 2 to 20 parts by weight, and particularly preferably 2 to 12 parts by weight.
屬於（B）組及（C）組的單體（官能基團單體）含有可與交聯性化合物反應的官能基團。作為這種官能基團，有羧基、羥基等。此外，屬於（A）組的單體可以不含有可與交聯性化合物反應的官能基團。The monomers (functional group monomers) belonging to the groups (B) and (C) contain a functional group reactive with the crosslinkable compound. As such a functional group, there are a carboxyl group, a hydroxyl group, and the like. In addition, the monomer belonging to the (A) group may not contain a functional group reactive with the crosslinkable compound.
在本發明的光學薄膜用黏著劑層的黏著劑組合物中，作為（B）含羧基的共聚性乙烯基單體，可列舉出由（甲基）丙烯酸、羧基乙基（甲基）丙烯酸酯、羧基戊基（甲基）丙烯酸酯、2-（甲基）丙烯醯氧基乙基六氫鄰苯二甲酸、2-（甲基）丙烯醯氧基乙基鄰苯二甲酸、2-（甲基）丙烯醯氧基乙基琥珀酸、2-（甲基）丙烯醯氧基乙基馬來酸、羧基聚己內酯單（甲基）丙烯酸酯、2-（甲基）丙烯醯氧基乙基四氫鄰苯二甲酸所構成的化合物組中選擇的至少一種以上。 本發明的丙烯酸類聚合物相對於由屬於（A）組的（a1）~（a3）所構成的單體組中選擇的至少兩種以上的單體的總量100重量份，較佳含有0.1~10.0重量份（B）含羧基的共聚性乙烯基單體，更佳含有0.3~9.0重量份，特佳含有0.5~9.0重量份。In the adhesive composition of the adhesive layer for optical films of the present invention, (B) carboxyl group-containing copolymerizable vinyl monomers include (meth)acrylic acid, carboxyethyl (meth)acrylate , carboxypentyl (meth)acrylate, 2-(meth)acryloyloxyethylhexahydrophthalic acid, 2-(meth)acryloyloxyethylphthalic acid, 2-(meth)acryloyloxyethyl phthalate Meth)acryloyloxyethylsuccinic acid, 2-(meth)acryloyloxyethylmaleic acid, carboxypolycaprolactone mono(meth)acrylate, 2-(meth)acryloyloxy At least one or more selected from the compound group consisting of ethyl tetrahydrophthalic acid. The acrylic polymer of the present invention preferably contains 0.1 parts by weight of the total amount of at least two or more monomers selected from the monomer group (a1) to (a3) belonging to the (A) group, in total of 100 parts by weight. ~10.0 parts by weight of (B) carboxyl group-containing copolymerizable vinyl monomers, more preferably 0.3 to 9.0 parts by weight, and particularly preferably 0.5 to 9.0 parts by weight.
在本發明的光學薄膜用黏著劑層的黏著劑組合物中，作為（C）含羥基的共聚性乙烯基單體，可列舉出（甲基）丙烯酸8-羥基辛酯、（甲基）丙烯酸6-羥基己酯、（甲基）丙烯酸4-羥基丁酯、（甲基）丙烯酸2-羥基丙酯、（甲基）丙烯酸2-羥基乙酯等含羥基的（甲基）丙烯酸烷基酯類或N-羥基（甲基）丙烯醯胺、N-羥基甲基（甲基）丙烯醯胺、N-羥基乙基（甲基）丙烯醯胺等含羥基的（甲基）丙烯醯胺類等中的至少一種以上。其中，含羥基的共聚性乙烯基單體較佳為由（甲基）丙烯酸8-羥基辛酯、（甲基）丙烯酸6-羥基己酯、（甲基）丙烯酸4-羥基丁酯、（甲基）丙烯酸2-羥基丙酯、（甲基）丙烯酸2-羥基乙酯、N-羥基（甲基）丙烯醯胺、N-羥基甲基（甲基）丙烯醯胺、N-羥基乙基（甲基）丙烯醯胺所構成的化合物組中選擇的至少一種以上。 本發明的光學薄膜用黏著劑層的丙烯酸類聚合物相對於由屬於（A）組的（a1）~（a3）所構成的單體組中選擇的至少兩種以上的單體的總量100重量份，較佳含有0.05~4.5重量份（C）含羥基的共聚性乙烯基單體，更佳含有0.05~1.2重量份，特佳含有0.05~0.5重量份。In the adhesive composition of the adhesive layer for an optical film of the present invention, (C) the hydroxyl group-containing copolymerizable vinyl monomer includes 8-hydroxyoctyl (meth)acrylate, (meth)acrylic acid Hydroxy-containing alkyl (meth)acrylates such as 6-hydroxyhexyl, 4-hydroxybutyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, and 2-hydroxyethyl (meth)acrylate or N-hydroxy (meth) acrylamide, N-hydroxymethyl (meth) acrylamide, N-hydroxyethyl (meth) acrylamide and other hydroxyl-containing (meth) acrylamides at least one of the above. Among them, the copolymerizable vinyl monomer containing hydroxyl group is preferably composed of 8-hydroxyoctyl (meth)acrylate, 6-hydroxyhexyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, (meth)acrylate base) 2-hydroxypropyl acrylate, 2-hydroxyethyl (meth)acrylate, N-hydroxy (meth) acrylamide, N-hydroxymethyl (meth) acrylamide, N-hydroxyethyl ( At least one or more selected from the group of compounds consisting of meth)acrylamides. The acrylic polymer of the adhesive layer for an optical film of the present invention is 100 with respect to the total amount of at least two or more monomers selected from the monomer group consisting of (a1) to (a3) belonging to the (A) group. Parts by weight, preferably 0.05-4.5 parts by weight (C) hydroxyl-containing copolymerizable vinyl monomers, more preferably 0.05-1.2 parts by weight, particularly preferably 0.05-0.5 parts by weight.
作為所述丙烯酸類聚合物而使用的共聚物的聚合方法沒有特別限定，可使用溶液聚合法、乳化聚合法等適宜的公知聚合方法。在所述丙烯酸類聚合物的單體組成中，屬於（A）組的（a1）~（a3）所構成的單體組中選擇的至少兩種以上的單體的總量100重量份中，使屬於（a1）烷基碳原子數為C1 ~C14 的（甲基）丙烯酸烷基酯單體的單體中的一種為51重量份以上95重量份以下（略記為M1），使所述（a1）~（a3）所構成的單體組中選擇的另一種以上的單體的總量為5重量份以上49重量份以下（略記為M2），使M1與M2的總量為100重量份。M1僅由單體的一種構成，M2由M1以外的單體構成。構成M2的各單體只要屬於（a1）~（a3）的任一種，則M2可以含有屬於（a1）的單體（除了符合M1的單體），也可以不含有；M2可以含有屬於（a2）的單體，也可以不含有；M2可以含有屬於（a3）的單體，也可以不含有。 在本發明中，丙烯酸類聚合物的玻璃化轉變溫度（以下記為Tg）較佳為-60℃以上-30℃以下。若Tg超過-30℃，則耐發泡性（耐久性）降低，故不佳。更進一步，本發明的丙烯酸類聚合物的Tg更佳為-50℃~-30℃。此外，本發明的丙烯酸類聚合物的重均分子量較佳為100萬以上，更佳為100萬~200萬的範圍。The polymerization method of the copolymer used as the acrylic polymer is not particularly limited, and a suitable known polymerization method such as a solution polymerization method and an emulsion polymerization method can be used. In the monomer composition of the acrylic polymer, in the total amount of 100 parts by weight of at least two or more monomers selected from the monomer group consisting of (a1) to (a3) in the (A) group, (a1) One of the monomers belonging to the alkyl (meth)acrylate monomer having an alkyl carbon number of C 1 to C 14 is 51 parts by weight or more and 95 parts by weight or less (abbreviated as M1). The total amount of one or more monomers selected from the monomer group formed by the above (a1) to (a3) is 5 parts by weight to 49 parts by weight (abbreviated as M2), and the total amount of M1 and M2 is 100 parts by weight. M1 is composed of only one kind of monomer, and M2 is composed of monomers other than M1. As long as the monomers constituting M2 belong to any one of (a1) to (a3), M2 may contain monomers belonging to (a1) (except the monomers conforming to M1) or not; M2 may contain monomers belonging to (a2) ) monomers, or may not contain; M2 may contain monomers belonging to (a3), or may not contain. In the present invention, the glass transition temperature (hereinafter referred to as Tg) of the acrylic polymer is preferably -60°C or higher and -30°C or lower. When Tg exceeds -30 degreeC, since foaming resistance (durability) falls, it is unfavorable. Further, the Tg of the acrylic polymer of the present invention is more preferably -50°C to -30°C. In addition, the weight average molecular weight of the acrylic polymer of the present invention is preferably 1 million or more, and more preferably in the range of 1 million to 2 million.
本發明的光學薄膜用黏著劑層的黏著劑組合物通過在上述的丙烯酸類聚合物中添加交聯性化合物或適宜的任選添加劑，能夠對需要的物性值進行調整。The adhesive composition of the adhesive layer for optical films of the present invention can be adjusted to desired physical properties by adding a crosslinkable compound or an appropriate optional additive to the above-mentioned acrylic polymer.
本發明的光學薄膜用黏著劑組合物的交聯性化合物為用於丙烯酸類聚合物的交聯的化合物（交聯劑）。作為交聯性化合物，較佳為2官能基以上的環氧類化合物。作為2官能基以上的環氧類化合物，只要是在1分子中具有2個以上環氧基的化合物即可，沒有特別限定，例如可列舉出由1,3-雙（二縮水甘油基氨基甲基）環己烷、1,3-雙（二縮水甘油基氨基甲基）苯〔別名：N,N,N’,N’-四縮水甘油基-間苯二甲胺〕、二縮水甘油基苯胺等的聚縮水甘油胺類、山梨糖醇聚縮水甘油醚、（聚）乙二醇二縮水甘油醚、1,6-己烷二醇二縮水甘油醚、甘油聚縮水甘油醚、三羥甲基丙烷聚縮水甘油醚、雙酚A二縮水甘油醚等聚縮水甘油醚類、六氫鄰苯二甲酸二縮水甘油酯、馬來酸二縮水甘油酯等聚縮水甘油酯類等中選擇的至少一種以上。 此外，作為通常可獲得的市售環氧類化合物，例如可列舉出1,3-雙（二縮水甘油基氨基甲基）環己烷、1,3-雙（二縮水甘油基氨基甲基）苯等。 此外，本發明的光學薄膜用黏著劑組合物相對於由屬於（A）組的（a1）~（a3）所構成的單體組中選擇的至少兩種以上的單體的總量100重量份，較佳含有0.001~0.5重量份交聯性化合物。作為交聯性化合物，可僅使用2官能基以上的環氧類化合物。The crosslinkable compound of the adhesive composition for optical films of this invention is a compound (crosslinking agent) used for crosslinking of an acrylic polymer. As a crosslinkable compound, the epoxy compound of bifunctional or more is preferable. The epoxy-based compound having two or more functional groups is not particularly limited as long as it has two or more epoxy groups in one molecule, and examples thereof include 1,3-bis(diglycidylcarbamate) base) cyclohexane, 1,3-bis(diglycidylaminomethyl)benzene [alias: N,N,N',N'-tetraglycidyl-m-xylylenediamine], diglycidyl Polyglycidylamines such as aniline, sorbitan polyglycidyl ether, (poly)ethylene glycol diglycidyl ether, 1,6-hexanediol diglycidyl ether, glycerol polyglycidyl ether, trimethylol At least one selected from polyglycidyl ethers such as propane polyglycidyl ether and bisphenol A diglycidyl ether, and polyglycidyl esters such as diglycidyl hexahydrophthalate and diglycidyl maleate, etc. more than one. Moreover, as a commercially available epoxy-type compound, 1, 3- bis (diglycidyl aminomethyl) cyclohexane, 1, 3- bis (diglycidyl aminomethyl) are mentioned, for example Benzene etc. Moreover, the adhesive composition for optical films of this invention is 100 parts by weight of the total amount of at least two or more monomers selected from the monomer group consisting of (a1) to (a3) belonging to the (A) group , preferably contains 0.001 to 0.5 parts by weight of crosslinking compounds. As the crosslinkable compound, only epoxy-based compounds having a bifunctional or more functional group can be used.
作為其他任選的成分，可適當添加抗氧化劑、抗靜電劑、矽烷偶聯劑、表面活性劑、固化促進劑、增塑劑、填充劑、交聯催化劑、交聯延遲劑、固化延遲劑、加工助劑、抗老化劑等公知的添加劑。它們可以單獨使用，或也可兩種以上共同使用。As other optional components, antioxidants, antistatic agents, silane coupling agents, surfactants, curing accelerators, plasticizers, fillers, crosslinking catalysts, crosslinking retarders, curing retarders, Known additives such as processing aids and antiaging agents. These may be used alone or in combination of two or more.
本發明的光學薄膜用黏著劑層能夠在將所述黏著劑組合物塗佈於基材或離型薄膜後，通過使黏著劑組合物交聯而形成。交聯後的光學薄膜用黏著劑層的凝膠分率較佳為60~90%。光學薄膜用黏著劑層的凝膠分率若在該範圍外，耐熱性、耐久性降低，故不佳。The adhesive layer for an optical film of the present invention can be formed by crosslinking the adhesive composition after applying the adhesive composition to a substrate or a release film. The gel fraction of the adhesive layer for an optical film after crosslinking is preferably 60 to 90%. If the gel fraction of the adhesive layer for an optical film is outside this range, heat resistance and durability are lowered, which is unfavorable.
在將本發明的光學薄膜用黏著劑層用於光學部件層間的貼合等情況下，最好為薄的黏著劑層。光學薄膜用黏著劑層的厚度較佳為5~25μm。此外，為了降低光學薄膜用黏著劑層與光學部件的介面上的光線反射，被黏著體與光學薄膜用黏著劑層之間的折射率的差最好盡可能小。When the adhesive layer for optical films of the present invention is used for bonding between optical member layers, etc., a thin adhesive layer is preferable. The thickness of the adhesive layer for optical films is preferably 5 to 25 μm. In addition, in order to reduce light reflection at the interface between the adhesive layer for optical films and the optical member, the difference in refractive index between the adherend and the adhesive layer for optical films is preferably as small as possible.
此外，本發明的光學薄膜用黏著薄膜可通過在基材、光學薄膜、離型薄膜的單面上形成本發明的光學薄膜用黏著劑層而製造。作為用於光學薄膜用黏著劑層的形成的基材薄膜或保護黏著面的離型薄膜（間隔物），可使用聚酯薄膜等樹脂薄膜等。對於基材薄膜，在樹脂薄膜的形成有光學薄膜用黏著劑層一側的相反面上，可通過矽酮類、氟類的離型劑或塗佈劑、二氧化矽微粒等施以防汙處理，通過塗佈或摻混抗靜電劑等施以抗靜電處理。Moreover, the adhesive film for optical films of this invention can be manufactured by forming the adhesive layer for optical films of this invention on the single side|surface of a base material, an optical film, and a release film. Resin films, such as a polyester film, etc. can be used as a base film used for the formation of the adhesive bond layer for optical films, or a release film (spacer) for protecting the adhesive surface. For the base film, on the opposite side of the resin film to the side where the adhesive layer for optical films is formed, antifouling can be applied with silicone-based, fluorine-based release agents or coating agents, silica particles, etc. Treatment, apply antistatic treatment by coating or blending antistatic agent, etc.
對於離型薄膜，在與光學薄膜用黏著劑層的黏著面接合的一側的面上，可通過矽酮類、氟類的離型劑等施以離型處理。可通過在一個光學薄膜用黏著劑層的兩面，分別接合離型薄膜的施加離型處理的面，而成為形成“離型薄膜/光學薄膜用黏著劑層/離型薄膜”的結構。在該情況下，可通過將兩側的離型薄膜依次或同時剝離，露出黏著面，而與光學薄膜等光學部件貼合。作為光學薄膜，可列舉出偏光薄膜、相位差薄膜、防反射薄膜、防眩（Anti-glare）薄膜、紫外線吸收薄膜、紅外線吸收薄膜、光學補償薄膜、亮度提高薄膜等。The release film may be subjected to release treatment with a silicone-based, fluorine-based release agent, or the like, on the surface on the side to be joined to the adhesive surface of the adhesive layer for optical films. It is possible to form a structure of "release film/adhesive layer for optical films/release film" by joining the surfaces of the release film to which the release treatment is applied to both sides of one adhesive layer for optical films. In this case, the release films on both sides can be peeled off sequentially or simultaneously to expose the adhesive surface, and it can be bonded to optical members such as an optical film. The optical film includes a polarizing film, a retardation film, an antireflection film, an anti-glare film, an ultraviolet absorbing film, an infrared absorbing film, an optical compensation film, a brightness enhancement film, and the like.
本發明的光學薄膜用黏著劑層的耐熱性及耐久性優異，因此能夠以偏光薄膜/光學薄膜用黏著劑層/相位差薄膜/光學薄膜用黏著劑層/有機EL面板的結構，適用於貼合相位差薄膜與偏光薄膜或有機EL面板的用途。Since the adhesive layer for optical films of the present invention is excellent in heat resistance and durability, it can be applied in the structure of polarizing film/adhesive layer for optical films/retardation film/adhesive layer for optical films/organic EL panel. The use of combined retardation film and polarizing film or organic EL panel.
本發明的光學薄膜用黏著劑層及光學薄膜用黏著薄膜可用於組裝於圖像顯示裝置的各種光學薄膜、觸摸面板用的各種光學薄膜、電子紙用的各種光學薄膜、組裝於液晶面板的各種光學薄膜、組裝於有機EL面板的各種光學薄膜的貼合。此外，可以形成在上述光學薄膜的至少單面上積層有所述光學薄膜用黏著劑層的帶有黏著劑層的光學薄膜。在具有通過離型薄膜保護的光學薄膜用黏著劑層的情況下，通過剝開離型薄膜，以“光學薄膜/光學薄膜用黏著劑層”的方式露出光學薄膜用黏著劑層，與其他光學薄膜貼合，能夠獲得在層間使用了光學薄膜用黏著劑層的“光學薄膜/光學薄膜用黏著劑層/光學薄膜”等的結構。The adhesive layer for optical films and the adhesive film for optical films of the present invention can be used for various optical films incorporated in image display devices, various optical films for touch panels, various optical films for electronic paper, and various optical films incorporated in liquid crystal panels Bonding of optical films and various optical films assembled in organic EL panels. Moreover, the optical film with an adhesive bond layer which laminated|stacked the said adhesive bond layer for optical films on at least one side of the said optical film can be formed. In the case of having an adhesive layer for optical films protected by a release film, by peeling off the release film, the adhesive layer for optical films is exposed as "optical film/adhesive layer for optical films". By film bonding, a structure such as "optical film/adhesive layer for optical film/optical film" in which an adhesive layer for optical films is used between layers can be obtained.
本發明的光學薄膜用黏著劑層適用在組裝於圖像顯示裝置的各種光學薄膜的貼合。本發明的光學薄膜用黏著劑層能夠以“偏光薄膜/光學薄膜用黏著劑層”、“偏光薄膜/光學薄膜用黏著劑層/離型薄膜”、“偏光薄膜/光學薄膜用黏著劑層/相位差薄膜/光學薄膜用黏著劑層”、“偏光薄膜/光學薄膜用黏著劑層/相位差薄膜/光學薄膜用黏著劑層/離型薄膜”等結構而適用。The adhesive layer for optical films of the present invention is suitable for bonding of various optical films to be incorporated in image display devices. The adhesive layer for optical films of the present invention can be represented by “polarizing films/adhesive layers for optical films”, “polarizing films/adhesive layers for optical films/release films”, “polarizing films/adhesive layers for optical films/ It is suitable for structures such as retardation film/adhesive layer for optical film", "polarizing film/adhesive layer for optical film/retardation film/adhesive layer for optical film/release film".
作為本發明的圖像顯示裝置，可列舉出液晶顯示裝置（液晶面板）、有機EL顯示裝置（液晶面板）、觸摸面板、電子紙等，但並不限於此。以下、以有機EL面板作為代表例進行說明，基於這些概念的本發明也可適用於液晶面板等其它圖像顯示裝置。 作為組裝於有機EL面板的相位差薄膜的材質，可例舉聚碳酸酯化合物，較佳具有逆波長分散（波長越長則雙折射越大）的材料。聚碳酸酯化合物為在聚合物重複單元中含有碳酸酯鍵（-O-CO-O-）的樹脂，各碳酸酯鍵間包含的化學結構中，已知有芳香族類、脂肪族類等各種。重複單元可以是一種，也可以是兩種以上。作為相位差薄膜的相位差，可列舉出1/4λ或1/2λ（波長λ的1/4倍或1/2倍）。 其中，近年來，在有機EL面板中，需要用於防止外光的反射的圓偏光板，圓偏光板為重疊有兩片直線偏光薄膜與1/4λ相位差薄膜的結構，且相位差薄膜面貼合於有機EL面板，因此存在因聚碳酸酯類樹脂導致的耐久性、耐發泡性差的缺點。 本發明的光學薄膜用黏著劑層用於偏光薄膜及有機EL面板的、光學薄膜的貼合，利用價值極高，所述偏光薄膜及有機EL面板中組裝有由聚碳酸酯類樹脂構成的1/4λ的相位差薄膜。The image display device of the present invention includes, but is not limited to, a liquid crystal display device (liquid crystal panel), an organic EL display device (liquid crystal panel), a touch panel, and electronic paper. Hereinafter, the organic EL panel will be described as a representative example, but the present invention based on these concepts can also be applied to other image display devices such as liquid crystal panels. As the material of the retardation film to be assembled in the organic EL panel, a polycarbonate compound can be mentioned, and a material having reverse wavelength dispersion (the longer the wavelength, the higher the birefringence) is preferable. Polycarbonate compounds are resins containing carbonate bonds (-O-CO-O-) in polymer repeating units, and various chemical structures included between each carbonate bond are known, such as aromatic, aliphatic, etc. . One type of repeating unit may be used, or two or more types may be used. The retardation of the retardation film includes 1/4λ or 1/2λ (1/4 times or 1/2 times the wavelength λ). Among them, in recent years, in organic EL panels, a circular polarizer for preventing reflection of external light is required. Since it is bonded to an organic EL panel, there is a disadvantage in that the durability and foaming resistance are poor due to the polycarbonate-based resin. The adhesive layer for an optical film of the present invention is used for bonding of a polarizing film and an organic EL panel and an optical film, and has a very high utility value. The polarizing film and the organic EL panel are assembled with a polycarbonate resin. /4λ retardation film.
作為偏光薄膜，通常使用如下結構：將含有碘分子（I2 ）的聚乙烯醇（PVA）層作為起偏鏡，在其兩側層疊使用了三醋酸纖維素（TAC）、COP（環烯烴聚合物）、丙烯酸樹脂、聚丙烯（PP）等光學特性（透明性等）優異的材料的樹脂薄膜作為保護層（有時也稱起偏鏡的保護薄膜）。進一步，保護層的樹脂薄膜有時兼具相位差薄膜的功能。As a polarizing film, the following structure is generally used: a polyvinyl alcohol (PVA) layer containing iodine molecules (I 2 ) is used as a polarizer, and triacetate cellulose (TAC) and COP (cycloolefin polymerization) are laminated on both sides of the polarizer. resin), acrylic resin, polypropylene (PP) and other materials with excellent optical properties (transparency, etc.) as a protective layer (sometimes also referred to as a protective film for polarizers). Furthermore, the resin film of the protective layer may also function as a retardation film.
作為有機EL面板，可列舉出如下結構：具有有機發光二極體（OLED）結構，在正負電極之間具有形成、層疊有空穴注入層、空穴傳輸層、發光層、電子傳輸層、電子注入層等多個功能層的發光元件。作為電極，可列舉出具有透光性的透明電極層、不透明的金屬電極層。還可製造柔性有機EL面板，在樹脂等的柔性基材上，能夠通過箔、電鍍、印刷、蒸鍍、濺射等形成電極、線路、功能層等。 [實施例]Examples of the organic EL panel include a structure having an organic light emitting diode (OLED) structure, and a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron transport layer, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron A light-emitting element with multiple functional layers such as an injection layer. As the electrode, a transparent electrode layer having translucency and an opaque metal electrode layer can be mentioned. Flexible organic EL panels can also be manufactured, and electrodes, circuits, functional layers, etc. can be formed on flexible substrates such as resins by foil, electroplating, printing, vapor deposition, sputtering, etc. [Example]
以下，以實施例對本發明進行具體的說明。Hereinafter, the present invention will be specifically described by way of examples.
＜丙烯酸類聚合物的製備＞ [實施例1] 向具有反應容器、攪拌機、溫度計、回流冷卻器及氮氣導入管的反應裝置中導入氮氣，用氮氣置換掉反應容器內的空氣。然後，向反應容器中加入丙烯酸2-乙基己酯70重量份、丙烯酸叔丁酯30重量份、2-丙烯醯氧基乙基六氫鄰苯二甲酸0.5重量份、丙烯酸8-羥基辛酯0.3重量份，同時加入溶劑（乙酸乙酯）60重量份。然後，用2小時滴下作為聚合引發劑的偶氮二異丁腈0.1重量份，在65℃下反應6小時，得到實施例1的丙烯酸類聚合物溶液。 [實施例2~5及比較例1~3] 構成丙烯酸類聚合物的各單體的種類、添加比例分別如表1的（A）~（C）組所述，除此之外，以與上述的實施例1相同的方式得到實施例2~5及比較例1~3的丙烯酸類聚合物溶液。<Preparation of acrylic polymer> [Example 1] Nitrogen gas was introduced into a reaction apparatus having a reaction vessel, a stirrer, a thermometer, a reflux cooler, and a nitrogen gas introduction pipe, and the air in the reaction vessel was replaced with nitrogen gas. Then, 70 parts by weight of 2-ethylhexyl acrylate, 30 parts by weight of t-butyl acrylate, 0.5 part by weight of 2-acrylooxyethyl hexahydrophthalic acid, and 8-hydroxyoctyl acrylate were added to the reaction vessel. 0.3 parts by weight, and 60 parts by weight of a solvent (ethyl acetate) was added at the same time. Then, 0.1 weight part of azobisisobutyronitrile as a polymerization initiator was dripped over 2 hours, and it was made to react at 65 degreeC for 6 hours, and the acrylic polymer solution of Example 1 was obtained. [Examples 2 to 5 and Comparative Examples 1 to 3] Examples 2 to 2 were obtained in the same manner as in the above-mentioned Example 1, except that the types and addition ratios of the monomers constituting the acrylic polymer were as described in Groups (A) to (C) of Table 1, respectively. 5 and the acrylic polymer solutions of Comparative Examples 1 to 3.
＜黏著劑組合物、光學薄膜用黏著劑層、及光學薄膜用黏著薄膜的製備＞ [實施例1] 在如上所述製備的反應容器內的實施例1的丙烯酸類聚合物溶液中，加入1,3-雙（二縮水甘油基氨基甲基）環己烷0.01重量份，攪拌混合，得到實施例1的黏著劑組合物。將該黏著劑組合物以乾燥後的厚度為10μm的方式，塗佈在離型薄膜（經矽酮樹脂塗佈的聚對苯二甲酸乙二醇酯（PET）薄膜）上之後，在90℃下乾燥5分鐘，形成黏著劑層。然後在乾燥的黏著劑層上重疊經過離型處理的離型薄膜，形成由離型薄膜/光學薄膜用黏著劑層/離型薄膜構成的層結構。進一步，在23℃、50%RH的氣氛下進行7天的熟化（保養），由此得到實施例1的光學薄膜用黏著薄膜。 [實施例2~5及比較例1~3] 交聯性化合物的種類、添加比例分別如表1的（D）組所述，乾燥後的黏著劑層的厚度為表3的值，除此之外，以與上述的實施例1相同的方式，得到實施例2~5及比較例1~3的光學薄膜用黏著薄膜。<Preparation of adhesive composition, adhesive layer for optical films, and adhesive films for optical films> [Example 1] To the acrylic polymer solution of Example 1 in the reaction vessel prepared as described above, 0.01 part by weight of 1,3-bis(diglycidylaminomethyl)cyclohexane was added, stirred and mixed to obtain Example 1 adhesive composition. The adhesive composition was coated on a release film (polyethylene terephthalate (PET) film coated with a silicone resin) in such a manner that the thickness after drying was 10 μm, and the temperature was 90° C. Dry for 5 minutes to form an adhesive layer. Then, the release film that has undergone release treatment is superimposed on the dried adhesive layer to form a layer structure composed of release film/adhesive layer for optical films/release film. Furthermore, aging (maintenance) was performed for 7 days in the atmosphere of 23 degreeC and 50%RH, and the adhesive film for optical films of Example 1 was obtained by this. [Examples 2 to 5 and Comparative Examples 1 to 3] The types and addition ratios of the crosslinkable compounds are as described in Group (D) of Table 1, respectively, and the thickness of the adhesive layer after drying is the value in Table 3, except that it is the same as the above-mentioned Example 1. , the adhesive films for optical films of Examples 2 to 5 and Comparative Examples 1 to 3 were obtained.
[表1]
在表1中，（A）組的由烷基碳原子數為C1~C14的（甲基）丙烯酸烷基酯單體（a1）、具有芳香族基的（甲基）丙烯酸酯單體（a2）、含氮乙烯基單體（a3）所構成的單體組中選擇的兩種以上的單體的總量為100重量份（其中，屬於所述（a1）的單體的一種為51重量份以上95重量份以下，選自由所述（a1）~（a3）所構成的單體組中的另一種以上的單體的總量為5重量份以上49重量份以下，且它們的總量為100重量份）。此外，作為從（B）組到（D）組的添加比例，用括弧括出的重量份的數值表示。此外，（B）組為含羧基的共聚性乙烯基單體，（C）組為含羥基的共聚性乙烯基單體，（D）組為交聯性化合物。In Table 1, (A) group is composed of (meth)acrylic acid alkyl ester monomer (a1) having an alkyl carbon number of C1 to C14, and (meth)acrylic acid ester monomer (a2) having an aromatic group ), the total amount of two or more monomers selected from the monomer group consisting of the nitrogen-containing vinyl monomer (a3) is 100 parts by weight (among which, one of the monomers belonging to the (a1) is 51 parts by weight part more than 95 parts by weight, the total amount of another or more monomers selected from the monomer group constituted by the above (a1) to (a3) is 5 parts by weight to 49 parts by weight, and their total amount 100 parts by weight). In addition, as an addition ratio from (B) group to (D) group, the numerical value of the weight part enclosed in parentheses is shown. In addition, (B) group is a carboxyl group-containing copolymerizable vinyl monomer, (C) group is a hydroxyl group-containing copolymerizable vinyl monomer, and (D) group is a crosslinkable compound.
此外，在表2示出對應於表1所示的各成分的縮寫符號的化合物名。此外，TETRAD（註冊商標）-C及TETRAD-X為三菱瓦斯化學股份公司的商品名，CORONATE（註冊商標）HX及L為東曹股份公司的商品名。TDI表示甲苯二異氰酸酯，TMP表示三羥甲基丙烷，HDI表示六亞甲基二異氰酸酯。In addition, in Table 2, the compound name corresponding to the abbreviation symbol of each component shown in Table 1 is shown. In addition, TETRAD (registered trademark)-C and TETRAD-X are trade names of Mitsubishi Gas Chemical Corporation, and CORONATE (registered trademark) HX and L are trade names of Tosoh Corporation. TDI stands for toluene diisocyanate, TMP stands for trimethylolpropane, and HDI stands for hexamethylene diisocyanate.
[表2]
＜試驗方法及評價＞ 從得到的實施例1~5及比較例1~3的光學薄膜用黏著薄膜上剝離離型薄膜（經矽酮樹脂塗佈的PET薄膜），露出光學薄膜用黏著劑層，作為各種測定用及試驗用試樣。<Test method and evaluation> The release film (PET film coated with silicone resin) was peeled off from the obtained adhesive films for optical films of Examples 1 to 5 and Comparative Examples 1 to 3 to expose the adhesive layer for optical films, which were used for various measurements and Test sample.
＜光學薄膜用黏著劑層的凝膠分率的測定方法＞ 正確對測定試樣的黏著劑層的品質進行測定後，在室溫的甲苯液中浸漬24小時，溶出溶解成分後，用200目的金屬網過濾。然後，將濾出物在100℃乾燥1小時後，正確測定殘渣的品質，通過下述式計算光學薄膜用黏著劑層（交聯後的光學薄膜用黏著劑層）的凝膠分率。 光學薄膜用黏著劑層的凝膠分率（%）＝不溶部分品質（g）/黏著劑層的品質（g）×100<Method for Measuring Gel Fraction of Adhesive Layer for Optical Films> After accurately measuring the quality of the adhesive layer of the measurement sample, the sample was immersed in a toluene solution at room temperature for 24 hours to elute the dissolved components, and then filtered through a 200-mesh metal mesh. Then, after drying the filtrate at 100° C. for 1 hour, the quality of the residue was accurately measured, and the gel fraction of the adhesive layer for optical films (crosslinked adhesive layer for optical films) was calculated by the following formula. Gel fraction (%) of the adhesive layer for optical films = mass of insoluble part (g) / mass of adhesive layer (g) × 100
＜耐久性的試驗方法＞ 在聚碳酸酯樹脂薄膜構成的相位差薄膜（帝人股份公司制，型號PURE-ACE WR）的兩面，分別轉印光學薄膜用黏著劑層，進一步，將在其單面上貼合偏光薄膜而得到的帶有黏著劑層的光學薄膜的積層體貼合在無鹼玻璃（Corning社制 EAGLE-XG 厚度0.7mm）上，經高壓釜處理（50℃，5個大氣壓×20分鐘）後，在85℃乾燥氣氛下保存200小時後，取出置於23℃×50%RH氣氛下1小時後，以目視確認，判斷耐久性。目視確認的判定標準如下所述。 ○：完全沒有光學薄膜用黏著劑層的脫落及發泡。 △：在光學薄膜用黏著劑層發生脫落及發泡。 ×：在光學薄膜用黏著劑層的整體發生脫落及發泡。<Test method for durability> A retardation film (Teijin Co., Ltd., model PURE-ACE WR) composed of a polycarbonate resin film was transferred to both sides of the optical film adhesive layer, and further, a polarizing film was laminated on one side of the film. The laminated body of the optical film with an adhesive layer was bonded to an alkali-free glass (EAGLE-XG manufactured by Corning, thickness 0.7 mm), autoclaved (50°C, 5 atmospheres × 20 minutes), and then heated at 85°C. After being stored in a dry atmosphere for 200 hours, it was taken out and placed in an atmosphere of 23° C.×50% RH for 1 hour, and the durability was judged by visual inspection. Judgment criteria for visual confirmation are as follows. ○: There is no peeling and foaming of the adhesive layer for optical films at all. △: Peeling and foaming occurred in the adhesive layer for optical films. ×: Peeling and foaming occurred in the entire adhesive layer for optical films.
在表3中示出評價結果。“光學薄膜用黏著劑層的厚度”表示在耐久性試驗中使用的光學薄膜用黏著劑層的厚度。Table 3 shows the evaluation results. "The thickness of the adhesive layer for optical films" shows the thickness of the adhesive layer for optical films used in the durability test.
[表3]
作為本發明的光學薄膜用黏著劑層的從實施例1~5的光學薄膜用黏著薄膜露出的光學薄膜用黏著劑層，以偏光薄膜/光學薄膜用黏著劑層/相位差薄膜/光學薄膜用黏著劑層/無鹼玻璃的結構，製備模仿有機EL面板的積層體後，85℃、200小時後的耐久性下沒有發泡。即，本發明的光學薄膜用黏著劑層在用於相位差薄膜與偏光薄膜或有機EL面板之間的層間貼合時，具有優異的耐熱性及耐久性。As the adhesive layer for optical films of the present invention, the adhesive layers for optical films exposed from the adhesive films for optical films of Examples 1 to 5 are polarizing films/adhesive layers for optical films/retardation films/for optical films In the structure of the adhesive layer/alkali-free glass, there was no foaming at 85° C. and durability after 200 hours after preparing the laminate imitating the organic EL panel. That is, when the adhesive layer for optical films of the present invention is used for interlayer bonding between a retardation film and a polarizing film or an organic EL panel, it has excellent heat resistance and durability.
比較例1的光學薄膜用黏著薄膜，在光學薄膜用黏著劑組合物的丙烯酸類聚合物中，含羧基的共聚性乙烯基單體的使用量過少，丙烯酸類聚合物的Tg高，光學薄膜用黏著劑層的凝膠分率高，在耐久性試驗中，在光學薄膜用黏著劑層上觀察到部分發泡。 比較例2的光學薄膜用黏著薄膜，在光學薄膜用黏著劑組合物的丙烯酸類聚合物中，未使用含羥基的共聚性乙烯基單體，取而代之含羧基的共聚性乙烯基單體的使用量過多，丙烯酸類聚合物與交聯劑之間的反應性高，由於在塗佈前已進行了凝膠化，因此無法塗佈（可以說在該情況下，交聯後的凝膠分率大概為100%）。 比較例3的光學薄膜用黏著薄膜，光學薄膜用黏著劑層的凝膠分率低，在耐久性試驗中觀察到明顯的發泡。 由此，在比較例1~3的光學薄膜用黏著薄膜中，光學薄膜用黏著劑層無法具有耐久性。In the adhesive film for optical films of Comparative Example 1, in the acrylic polymer of the adhesive composition for optical films, the use amount of the carboxyl group-containing copolymerizable vinyl monomer is too small, and the Tg of the acrylic polymer is high. The gel fraction of the adhesive layer was high, and in the durability test, partial foaming was observed in the adhesive layer for optical films. The adhesive film for optical films of Comparative Example 2, in the acrylic polymer of the adhesive composition for optical films, does not use a hydroxyl group-containing copolymerizable vinyl monomer, instead, the use amount of a carboxyl group-containing copolymerizable vinyl monomer If it is too large, the reactivity between the acrylic polymer and the crosslinking agent is high, and it cannot be applied because it gels before application (it can be said that in this case, the gel fraction after crosslinking is approximately to 100%). In the adhesive film for optical films of Comparative Example 3, the gel fraction of the adhesive layer for optical films was low, and obvious foaming was observed in the durability test. Thus, in the adhesive films for optical films of Comparative Examples 1 to 3, the adhesive layer for optical films did not have durability.
無。without.
無。without.
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| WO2019131165A1 (en) * | 2017-12-25 | 2019-07-04 | Dic株式会社 | Pressure-sensitive adhesive tape and article |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011219602A (en) * | 2010-04-08 | 2011-11-04 | Fujikura Kasei Co Ltd | Acrylic adhesive composition and adhesive film |
| TW201432009A (en) * | 2013-01-17 | 2014-08-16 | Fujimori Kogyo Co | Adhesive layer and adhesive film |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3557429B2 (en) * | 1995-02-06 | 2004-08-25 | 綜研化学株式会社 | Pressure sensitive adhesive for liquid crystal element and liquid crystal element |
| JP4447234B2 (en) * | 2002-04-05 | 2010-04-07 | 日本カーバイド工業株式会社 | Pressure-sensitive adhesive composition for polarizing film and polarizing film |
| KR100671405B1 (en) * | 2004-12-15 | 2007-01-19 | 주식회사 에이스 디지텍 | Acryl adhesive composition having superior residual stress relexation, and optical film using the same |
| JP3997270B2 (en) * | 2005-11-21 | 2007-10-24 | 綜研化学株式会社 | Optical film pressure-sensitive adhesive composition and pressure-sensitive adhesive sheet, and optical member using the same |
| JP2008120864A (en) * | 2006-11-09 | 2008-05-29 | Dainippon Ink & Chem Inc | Double-sided pressure-sensitive adhesive sheet, module for touch panel and its manufacturing method |
| JP5379409B2 (en) | 2008-02-15 | 2013-12-25 | 日東電工株式会社 | Adhesive composition for optical film, adhesive optical film, and image display device |
| KR101133064B1 (en) * | 2008-04-25 | 2012-04-04 | 주식회사 엘지화학 | An acrylic pressure-sensitive adhesive composition, a polarizer and a liquid crystal display device comprising the same |
| JP5505766B2 (en) * | 2009-02-27 | 2014-05-28 | 綜研化学株式会社 | Adhesive composition for polarizing plate and polarizing plate using the same |
| JP2011105793A (en) * | 2009-11-13 | 2011-06-02 | Nippon Synthetic Chem Ind Co Ltd:The | Pressure-sensitive adhesive, pressure-sensitive adhesive for optical member, optical member with pressure-sensitive adhesive layer, and image display |
| JP5595034B2 (en) * | 2009-12-28 | 2014-09-24 | リンテック株式会社 | Adhesive composition, adhesive and adhesive sheet |
| JP5528159B2 (en) * | 2010-03-02 | 2014-06-25 | 日本カーバイド工業株式会社 | Adhesive composition, optical film and liquid crystal display device |
| KR101839173B1 (en) * | 2010-10-12 | 2018-03-15 | 스미또모 가가꾸 가부시키가이샤 | Adhesive composition for optical components, adhesive for optical components, optical component with adhesive layer, and image display device |
| JP5760571B2 (en) | 2011-03-24 | 2015-08-12 | Dic株式会社 | Colored adhesive tape for fixing polarizing film |
| WO2012144172A1 (en) * | 2011-04-18 | 2012-10-26 | 株式会社ブリヂストン | Adhesive composition, bonding method using same, laminate and tire |
| KR102090220B1 (en) * | 2012-06-05 | 2020-03-17 | 닛뽕 카바이도 고교 가부시키가이샤 | Adhesive composition for polarizing plates, polarizing plate with adhesive, and display device |
| JP6013898B2 (en) * | 2012-12-17 | 2016-10-25 | 藤森工業株式会社 | Adhesive layer and adhesive film |
| JP6026260B2 (en) * | 2012-12-17 | 2016-11-16 | 藤森工業株式会社 | Adhesive layer and adhesive film |
| JP6241816B2 (en) * | 2013-03-29 | 2017-12-06 | サイデン化学株式会社 | Optical pressure-sensitive adhesive composition and method for producing optical pressure-sensitive adhesive composition |
-
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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