TW201241124A - Adhesive agent composition for optical film and processed product of the same - Google Patents

Adhesive agent composition for optical film and processed product of the same Download PDF

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Publication number
TW201241124A
TW201241124A TW101103366A TW101103366A TW201241124A TW 201241124 A TW201241124 A TW 201241124A TW 101103366 A TW101103366 A TW 101103366A TW 101103366 A TW101103366 A TW 101103366A TW 201241124 A TW201241124 A TW 201241124A
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Taiwan
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optical film
monomer
weight
parts
adhesive
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TW101103366A
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Chinese (zh)
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Makoto Kondoh
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Soken Kagaku Kk
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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
    • C09J133/24—Homopolymers or copolymers of amides or imides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
    • C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
    • C08G18/6266—Polymers of amides or imides from alpha-beta ethylenically unsaturated carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic
    • 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
    • C09J133/24—Homopolymers or copolymers of amides or imides
    • C09J133/26—Homopolymers or copolymers of acrylamide or methacrylamide
    • 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
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • G02B5/305—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/302—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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)
  • Polarising Elements (AREA)

Abstract

An object of the invention is to provide an adhesive agent composition for an optical film with which peeling and bubbling are prevented even when the optical film is set aside under high-humidity and high-temperature conditions after adhesion, the item to which the film adheres remains unstained even if re-peeling of the film becomes necessary, the adhesive agent composition responds to the stress that is generated with dimensional changes in the optical film and discoloration associated with exposure to light is thereby controlled, and it is possible to prevent wrinkling and indentation when the optical film is taken up in a roll. Another object is to provide an optical film that uses the adhesive agent composition. The adhesive agent composition for an optical film is characterized in being obtained by adding 4 to 20 parts by weight of an isocyanate crosslinking agent per 100 parts by weight of an acrylic polymer that contains 8 to 35 parts by weight of an aromatic ring-containing acrylic monomer and 1 to 12 parts by weight of an amide group-containing acrylic monomer as the structural monomers. The optical film is characterized in that an adhesive agent layer obtained from the adhesive agent composition is disposed on at least one surface of the film.

Description

201241124 六、發明說明： 【發明所屬之技術領域】 本發明係關於光學薄膜用黏著劑組成物及其加工品。 更詳細而言，係關於有利地使用於光學薄膜中，具有優異 之耐久性及光漏防止效果，且應用於光學薄膜中時，會抑 制該光學薄膜捲繞時之皴紋或凹陷之產生之光學薄膜用黏 著劑組成物者。 【先前技術】 光學薄膜用途之黏著劑係被要求該用途中特有之諸特 性。該等係例如： (1)耐久性：亦即將光學薄膜貼合於被黏著體時， 即使在高溫高濕度環境下仍不會發生發泡、浮起、剝離等 > (2 )重工（rework )性：亦即貼合時產生位置偏移 時禁得住重貼合，. (3 )光漏防止性：亦即即使在光學薄膜收縮伴隨之 應力下，仍不會於顯示裝置中發生因不預期之光漏造成之 色斑， (4 )加工性：亦即應用黏著劑之光學薄膜加工容易 等。 上述特性中，近年已針對光漏防止性進行各種檢討。 不過，該光漏現象之發生係認爲其一原因係在顯示裝置中 之偏光板在高溫高濕下產生收縮時，貼合該偏光板之黏著 -5- 201241124 劑層亦處於應力下，結果構成黏著劑層之聚合物以一定方 向配向，使黏著劑層呈現雙折射性所致。爲了減低黏著劑 層中之雙折射，列舉一解決策略爲於構成黏著劑之聚合物 側鏈上導入芳香環。此處列舉之專利文獻1揭示使含有一 定量之含芳香環之丙烯酸單體與含有胺基之丙烯酸單體之 單體混合物共聚合而成之光學薄膜用黏著劑組成物。另一 方面專利文獻2揭示著眼於施於黏著劑層之應力緩和，而 以使分子量分布變爲較大之方式使含有含芳香環之丙烯酸 單體之單體混合物共聚合而成之拉伸彈性率低之光學薄膜 用黏著劑組成物。 然而，如專利文獻1及專利文獻2之構成雖獲得光漏 之減低效果，但含有含芳香環之丙烯酸單體之黏著劑一般 而言由於彈性率低，將應用該黏著劑之光學薄膜捲繞成滾 筒狀時會產生鈹紋或凹陷，故有良率變差之問題。 另一方面，例如專利文獻3，藉由縮短黏著劑層之老 化時間，而嘗試提高使用該黏著劑層之光學薄膜之切斷性 等之加工性。然而，如專利文獻3中之手法應用於含芳香 環之丙烯酸單體系之黏著劑時，由於含有含芳香環之丙烯 酸單體之黏著劑層之彈性率低，故即使於所要求之加工性 中亦難以抑制皺紋或凹陷。 [先前技術文獻] [專利文獻] [專利文獻1]日本特開2009-242767號公報 [專利文獻2]日本特開2007- 1 3 8056號公報 201241124 [專利文獻3]日本特開2 009- 1 73 772號公報 【發明內容】 [發明欲解決之課題] 本發明係鑑於該技術背景而完成者，其目的係提供一 種在貼合偏光薄膜、相位差薄膜、橢圓偏光薄膜等光學薄 膜後，即使放置於高濕熱條件下不僅不會發生剝離或發泡 ，且即使需要再剝離時亦不會對被黏著體造成污染，即使 上述光學薄膜出現尺寸變化時，仍可對應其應力而抑制因 光漏產生之色斑，而且，即使將上述光學薄膜捲繞成滾筒 狀時亦可抑制皴紋或凹陷之發生之光學薄膜用黏著劑組成 物；以及使用該黏著劑組成物之光學薄膜。 [用以解決課題之手段] 本發明人等爲解決上述課題而針對丙烯酸系聚合物之 調配進行檢討之結果，發現藉由除了含有芳香環之丙烯酸 單體以外，亦添加含有醯胺基之丙烯酸單體作爲丙烯酸系 聚合物之構成成分，且利用異氰酸酯系交聯劑作爲該聚合 物之交聯劑，可完全滿足光學薄膜用黏著劑所要求之主要 特性，因而完成本發明。 亦即本發明爲一種光學薄膜用黏著劑組成物，其係相 對於含有8〜35重量份之含芳香環之丙烯酸單體與i〜12重 量份之含醯胺基之丙烯酸單體作爲構成單體之丙烯酸系聚 合物1 00重量份，調配4〜20重量份之異氰酸酯系交聯劑 -7- 201241124 而成。 又本發明爲一種光學薄膜， 有由如上述之光學薄膜用黏著齊丨 [發明效果] 依據本發明，可提供一種 丙烯酸單體之黏著劑所特有之 久性及光漏防止效果，且應用 光學薄膜在捲繞時產生皺紋或 成物。 【實施方式】 本發明之光學薄膜用黏著I 體中含有8〜3 5重量份之含芳香 量份之含醯胺基之丙烯酸單體二 對於該聚合物100重量份爲4-聯劑交聯而調製。 本發明中使用之含有8〜35 酸單體與1〜12重量份之含醯® 單體之丙烯酸系聚合物（以下ί )J)爲使包含前述量之含芳1 基之丙烯酸單體，及後述之含好 合物共聚合而成者，該單體混名 添加含羧基之丙烯酸單體。 其特徵爲於至少一面上設 組成物而得之黏著劑層。 消除調配了含有芳香環之 性率低，且具有優異之耐 光學薄膜中時，可抑制該 陷之光學薄膜用黏著劑組 !1組成物係藉由使於構成單 環之丙烯酸單體及1〜12重 :丙烯酸系聚合物，利用相 •20重量份之異氰酸酯系交 重量份之含芳香環之丙烯 ί基之丙烯酸單體作爲構成 薄爲「丙烯酸系聚合物（Α F環之丙烯酸單體及含醯胺 S基之丙烯酸單體之單體混 Γ物中，亦可視需要進一步 -8- 201241124 構成本發明之丙烯酸系聚合物（A)之含芳香環之丙 嫌酸單體（以下稱爲「芳香環單體（al)」）爲分子內具 有方香環之丙烯酸單體。該芳香環單體（al)之具體例列 舉爲例如丙烯酸苯酯、（甲基）丙烯酸苯氧基乙酯、（甲 基）丙烯酸苄酯、（甲基）丙烯酸苯氧基二乙二醇酯、環 氧乙烷改質之壬基酚（甲基）丙烯酸酯、羥基乙基化卩萘 酣丙烯酸酯、聯苯（甲基）丙烯酸酯等。芳香環單體（al )之調配量在如上述之丙烯酸系聚合物（A)之構成單體 中爲8~35質量％，較好爲9.5〜20質量％。 芳香環單體（al)之調配量未達8質量％時，丙烯酸 系聚合物（A )之雙折射抑制性無法獲得滿足。另外，芳 香環單體（al)之調配量超過35質量％時，丙烯酸系聚合 物（A )之彈性率變小，所得黏著劑層容易產生凹陷而成 爲加工性差者。 又’構成本發明之丙烯酸系聚合物（A)之含有醯胺 基之丙烯酸單體（以下稱爲「醯胺基單體（a2)」）爲分 子內具有醯胺基或N取代之醯胺基之丙烯酸單體。該酿胺 基單體（a2 )之具體例列舉爲例如（甲基）丙烯醯胺、（ 甲基）丙烯醯基嗎啉、N-羥甲基（甲基）丙烯醯胺、N-羥 乙基（甲基）丙烯醯胺、N-甲氧基乙基（甲基）丙烯醯胺 、N，N-二甲基丙烯醯胺、N-異丙基丙烯醯胺等。該醯胺基 單體（a2)之調配量亦在如上述之丙烯酸系聚合物（A) 之構成單體中爲1〜12質量％，較好爲2.5~10質量％» 醯胺基單體（a2 )之調配量未達1質量％時，所得黏 201241124 著劑組成物中，無法充分促進後述之異氰酸酯系交聯劑之 反應，所得黏著劑層彈性率變低，結果容易產生凹陷而成 爲加工性差者。又，醯胺基單體（a2)之調配量超過12 質量％時，在所得黏著劑組成物中異氰酸酯系交聯劑之反 應會過度進行，所得黏著劑層會成爲不具有適當黏著力者 〇 再者，本發明之丙烯酸系聚合物（A)，除上述芳香 環單體（al)及醯胺基單體（a2)以外，另包含分子內具 有碳數1〜12之直鏈或分支烷基之丙烯酸單體（以下稱爲 「丙烯酸單體（a3)」）作爲主要成分。丙烯酸單體（a3 ·)之具體例列舉爲例如（甲基）丙烯酸甲酯、（甲基）丙 嫌酸乙酯、（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 )丙稀酸戊酯、（甲基）丙烯酸己酯、（甲基）丙烯酸2-乙基己酯、（甲基）丙烯酸辛酯、（甲基）丙烯酸壬酯、 (甲基）丙烯酸癸酯、（甲基）丙烯酸十二烷酯、（甲基 )丙嫌酸月桂酯等。該等丙烯酸單體（a3)之調配量，在 丙嫌酸系聚合物（A)之構成單體中，爲45〜90質量％， 較好爲65〜87質量％。 本發明之丙烯酸系聚合物（A)之聚合時，除上述各 種單體以外’亦可視需要使用含有羧基之丙烯酸單體（以 下稱爲「羧基單體（a4)」）^ Μ殘基單體（a4)爲分子內具有羧基之丙烯酸單體。 藉由適量調配該羧基單體（a4)，會提高黏著劑組成物之 -10- 201241124 凝聚性。 至於羧基單體（a4 )可列舉爲例如（甲基 (甲基）丙烯酸2-羧基乙酯、（甲基）丙烯酸 、（甲基）丙烯酸4-羧基丁酯等。該羧基單體 配量在丙烯酸系聚合物（A)之構成單體中爲（ ’較好爲1〜5質量％。 至於構成丙烯酸系聚合物（A)之單體成 單體以外，在不損及本發明目的之範圍內，亦 在單體總量之40質量％以下之範圍內使用上述 。該任意單體之比例更好爲3 〇質量％以下。至 體列舉爲（甲基）丙烯酸甲氧基乙酯、（甲基 氧基乙酯、（甲基）丙烯酸甲氧基二乙二醇酯 丙烯酸烷氧基烷酯單體等。 進而作爲任意單體，列舉爲乙酸乙烯酯、 甲基苯乙烯、N-乙烯基己內醯胺等乙烯系單體 丙稀酸縮水甘油酯等含環氧基之丙烯酸單體等 上述各單體之聚合可藉由用以獲得丙烯酸 一般方法’例如依需要將上述各單體一起混合 接著添加適當之聚合起始劑，藉由以熱或光等 行。 本發明之丙烯酸系聚合物（A)之分子量 制’但爲展現應用於光學薄膜中時之良好物性 均分子量計較好爲40〜200萬左右，更好爲50- )丙烯酸、 3-羧基丙酯 (a4)之調 >.5〜8質量％ 分，除前述 可任意的、 以外之單體 於該任意單 )丙烯酸乙 等（甲基） 苯乙烯、α- 、（甲基） 〇 系聚合物之 於溶劑中， 之作用而進 並無特別限 ，以重量平 -150萬左右 201241124 利用如上述獲得之丙烯酸系聚合物（A)，調製本發 明之光學薄膜用黏著劑組成物，只要依據一般方法將特定 量之異氰酸酯系交聯劑添加於丙烯酸系聚合物（A)中反 應即可。此時，可視需要添加矽烷偶合劑。 可使用於本發明之光學薄膜用黏著劑組成物中之異氰 酸酯系父聯劑（以下稱爲「父聯劑（B)」）之例可列舉 爲甲苯二異氛酸酯、氯苯二異氰酸酯、六亞甲基二異氰酸 酯、四亞甲基二異氛酸酯、異佛爾酮二異氰酸酯、二甲苯 二異氛酸醋、二苯基甲院二異氰酸醋、氫化二苯基甲院二 異氤酸酯等之異氰酸酯單體及使該等異氰酸酯單體與三經 甲基丙烷等加成而成之異氰酸酯化合物或異氰尿酸醋化合 物、乙縮脲型化合物、以及聚醚多元醇或聚酯多元醇、丙 烯酸多元醇、聚丁二烯多元醇、聚異戊二烯多元醇等加成 反應而成之胺基甲酸酯預聚物型之異氰酸酯等。該等中， 在本發明中以甲苯二異氤酸酯系交聯劑較佳。交聯劑（B )之調配量相對於丙烯酸系聚合物（A) 1〇〇重量份爲 4~20重量份，較好爲8~15重量份。 但本發明中，黏著劑層中或自被黏著體移行至黏著劑 層之水分係作爲與異氰酸酯系交聯劑（B )反應之開端而 生成聚脲，推測藉由該聚脲鏈與丙烯酸系聚合物（A)絡 合，形成與單純之高交聯不同之IPN (相互侵入網目高分 子）構造。此處，藉由使本發明之丙烯酸系聚合物（A) 含有醯胺基單體（a2)作爲構成要素，可適度地促進上述 聚脲生成反應，結果會使形成上述IPN構造被良好地進行 -12- 201241124 。藉此，推測本發明之光學薄膜用黏著劑組成物與以往之 含有芳香環之黏著劑組成物相比展現較高的彈性率。 又，交聯劑（B)之量脫離上述範圍而較少時，無法 順利地形成上述IPN構造，所得黏著劑層成爲彈性率低者 ，容易產生凹陷而成爲加工性變差，且耐久性亦差者。又 ，交聯劑（B)之量脫離上述範圍而較多時，過量生成之 聚脲鏈無法納入丙烯酸聚合物構造中而滲出，會有再剝離 時污染被黏著體之虞。 本發明之光學薄膜用黏著劑組成物之調製時，除上述 丙烯酸系聚合物（A)及交聯劑（B)以外，可視需要調配 矽烷偶合劑。藉由調配該矽烷偶合劑（以下有時稱爲「矽 烷偶合劑（C)」），可獲得提高對被黏著體之黏著力與 所得黏著劑層之耐久性之效果。 該矽烷偶合劑（C)列舉爲例如乙烯基三甲氧基矽烷 、乙烯基三乙氧基矽烷、甲基丙烯醯氧基丙基三甲氧基矽 烷等含聚合性不飽合基之矽化合物，3 -環氧丙氧基丙基三 甲氧基矽烷、3-環氧丙氧基丙基甲基二甲氧基矽烷、2_( 3,4-環氧基環己基）乙基三甲氧基矽烷等具有環氧構造之 矽化合物’ 3-胺基丙基三甲氧基矽烷、N- ( 2-胺基乙基）-3 -胺基丙基三甲氧基矽烷、N-( 2 -胺基乙基）-3 -胺基丙基 甲基二甲氧基矽烷等含有胺基之矽化合物，3 -異氰酸酯基 丙基三乙氧基矽烷等含有異氰酸酯基之矽化合物，3 _锍基 丙基三甲氧基矽烷等含毓基之矽化合物，含有乙醯乙醯基 之矽化合物’ 3 -氯丙基三甲氧基矽烷等。該等中，以具有 -13- 201241124 環氧構造之矽化合物較佳。調配偶合劑（c )時之調配量 ，相對於丙烯酸系聚合物（A) 100重量份爲0.05〜1重量 份，較好爲〇.〇5〜0.6重量份。 本發明之光學薄膜用黏著劑組成物係由丙烯酸系聚合 物（A )、交聯劑（b )及視需要之偶合劑（c )調製而成 ’但另可視需要將該等溶解於溶劑等之中，且塗佈於光學 薄膜上形成黏著劑層。 本發明之光學薄膜用黏著劑組成物所利用之光學薄膜 並無特別限制，可使用於例如偏光薄膜、相位差薄膜、橢 圓偏光薄膜、抗反射薄膜、亮度提高薄膜、光擴散薄膜、 防玻璃飛散之薄膜及表面保護薄膜等。 本發明之光學薄膜用黏著劑組成物藉由使用含有醯胺 基之單體及異氛酸酯系交聯劑而形成強固之IPN構造，故 相較於以往之使用芳香環單體之黏著劑層，爲可形成具有 高彈性率之黏著劑層者。結果，可抑制過去光學薄膜之缺 點之在捲繞時之皺紋或凹陷發生。 又’類似於含有醯胺基之單體者，雖列舉有含有胺基 之單體’但假如調配該等以替代含醯胺基之單體，則亦無 法形成如本發明之強固IPN構造，且無法獲得薄片老化性 優異之黏著劑層。又即使併用含醯胺基之單體與含胺基之 單體’仍無法獲得與本發明之黏著劑層相匹敵之薄片老化 性’亦無法形成強固之IPN構造。 又’爲了對黏著劑層展現特定之耐久性、加工性等， 本發明之丙烯酸系聚合物（A)較好實質上不含含有羥基 -14- 201241124 之丙烯酸系單體作爲構成要素。該等認爲是因爲在丙烯酸 系聚合物含活性羥基時，該羥基與異氰酸酯系交聯劑快速 反應’而無法順利形成本發明所意欲之IPN構造之故。 [實施例] 以下列舉實施例、製造例及試驗例更詳細說明本發明 ’但本發明並不受該等實施例之任何制約。 製造例1〜1 3 於具備攪拌機、回流冷卻器、溫度計及氮氣導入管之 反應裝置中，分別饋入表1所示之重量份（以下，在實施 例或表中有時簡稱爲「份」）之各聚合單體與乙酸乙酯， 添加偶氮雙異丁腈（大塚化學公司製造）（以下簡稱爲「 AIBN」）0.1份，且以氮氣置換反應容器內之空氣。接著 ’在氮氣環境下邊攪拌邊升溫至72 °C後，藉由反應8小時 ’獲得具有表1所記載之分子量之丙烯酸系聚合物。 -15- 201241124201241124 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to an adhesive composition for an optical film and a processed product thereof. More specifically, it is advantageous for use in an optical film, and has excellent durability and light leakage prevention effect, and when applied to an optical film, it suppresses generation of creases or depressions when the optical film is wound. The optical film is composed of an adhesive composition. [Prior Art] Adhesives for optical film applications are required to be unique in this application. These are, for example: (1) Durability: When the optical film is bonded to the adherend, foaming, floating, peeling, etc. will not occur even in a high-temperature and high-humidity environment. (2) Heavy work (rework) ): that is, when the positional shift occurs during the bonding, the reattachment is prohibited. (3) The light leakage prevention property: that is, even under the stress accompanying the contraction of the optical film, the occurrence of the optical device does not occur due to unexpected The stain caused by the light leakage, (4) Processability: that is, the optical film using the adhesive is easy to process. Among the above characteristics, various reviews have been conducted on the prevention of light leakage in recent years. However, the occurrence of the light leakage phenomenon is considered to be due to the fact that when the polarizing plate in the display device is contracted under high temperature and high humidity, the adhesive layer adhering to the polarizing plate is also under stress, and the result is also under stress. The polymer constituting the adhesive layer is aligned in a certain direction to cause the adhesive layer to exhibit birefringence. In order to reduce the birefringence in the adhesive layer, a solution strategy is to introduce an aromatic ring into the side chain of the polymer constituting the adhesive. Patent Document 1 listed herein discloses an adhesive composition for an optical film obtained by copolymerizing a monomer mixture containing a certain amount of an aromatic ring-containing acrylic monomer and an amine group-containing acrylic monomer. On the other hand, Patent Document 2 discloses a tensile elasticity in which a monomer mixture containing an aromatic ring-containing acrylic monomer is copolymerized in such a manner that the stress distribution applied to the adhesive layer is moderated, so that the molecular weight distribution becomes large. A low-cost adhesive composition for an optical film. However, as for the constitution of Patent Document 1 and Patent Document 2, the effect of reducing the light leakage is obtained, but the adhesive containing the aromatic monomer-containing acrylic monomer generally has a low elastic modulus, and the optical film to which the adhesive is applied is wound. When it is formed into a roll shape, crepe or dent is generated, so that there is a problem that the yield is deteriorated. On the other hand, for example, Patent Document 3 attempts to improve the workability such as the cuttability of the optical film using the adhesive layer by shortening the aging time of the adhesive layer. However, when the method of Patent Document 3 is applied to an adhesive of an acrylic ring-containing acrylic system, since the adhesive layer containing the aromatic ring-containing acrylic monomer has a low modulus of elasticity, even if the desired processability is required It is also difficult to suppress wrinkles or depressions. [PRIOR ART DOCUMENT] [Patent Document 1] JP-A-2009-242767 [Patent Document 2] Japanese Patent Laid-Open Publication No. 2007- 1 3 8056 No. 201241124 [Patent Document 3] Japanese Patent Laid-Open No. 2 009- 1 SUMMARY OF THE INVENTION [Problem to be Solved by the Invention] The present invention has been made in view of the technical background, and an object thereof is to provide an optical film such as a polarizing film, a retardation film, or an elliptically polarizing film, even after bonding When placed under high humidity and heat conditions, not only peeling or foaming will occur, but even if it needs to be peeled off again, it will not pollute the adherend. Even if the optical film has dimensional change, it can suppress the light leakage according to its stress. The coloring film which is produced, and the optical film adhesive composition which suppresses the occurrence of crepe or dents even when the optical film is wound into a roll shape; and an optical film using the adhesive composition. [Means for Solving the Problem] As a result of reviewing the blending of the acrylic polymer in order to solve the above problems, the present inventors have found that an acrylic acid containing a mercapto group is added in addition to the acrylic monomer containing an aromatic ring. The monomer is a constituent component of an acrylic polymer, and an isocyanate crosslinking agent is used as a crosslinking agent of the polymer to completely satisfy the main characteristics required for an adhesive for an optical film. Thus, the present invention has been completed. That is, the present invention is an adhesive composition for an optical film, which is a constituent sheet with respect to 8 to 35 parts by weight of an aromatic ring-containing acrylic monomer and i to 12 parts by weight of an amide-containing acrylic monomer. 100 parts by weight of the acrylic polymer of the body, and 4 to 20 parts by weight of an isocyanate crosslinking agent - 7 to 201241124. Further, the present invention is an optical film which is adhered to the optical film as described above. [Effect of the Invention] According to the present invention, it is possible to provide an adhesive of an acrylic monomer and a light leakage preventing effect, and to apply optical The film produces wrinkles or objects upon winding. [Embodiment] The adhesive film for optical film of the present invention contains 8 to 35 parts by weight of an aromatic component-containing acrylic monomer 2 in an adhesive body, and is 4-linked cross-linking for 100 parts by weight of the polymer. And modulation. The acrylic polymer (hereinafter referred to as ί) J containing 8 to 35 acid monomers and 1 to 12 parts by weight of the fluorene-containing monomer used in the present invention is an acrylic monomer containing the above-mentioned amount of the aryl group-containing group. And a copolymer containing a good compound which will be described later, the monomer is added with a carboxyl group-containing acrylic monomer. It is characterized by an adhesive layer obtained by providing a composition on at least one side. When the composition of the optical film for suppressing the trapping is low, and the excellent resistance to the optical film is eliminated, the composition of the adhesive for the optical film can be suppressed by the composition of the acrylic film and the composition of the single ring. ~12 weight: acrylic polymer, using 20 parts by weight of isocyanate-based cross-parts of an aromatic ring-containing acryl-based acrylic monomer as a thin "acrylic polymer (acrylic monomer of Α F ring) And the monomer mixture of the acrylamide-containing acrylic group-containing acrylic monomer, further optionally -8-201241124 constituting the aromatic ring-containing acrylic acid monomer of the acrylic polymer (A) of the present invention (hereinafter referred to as The "aromatic ring monomer (al)" is an acrylic monomer having a square aromatic ring in the molecule. Specific examples of the aromatic ring monomer (al) include, for example, phenyl acrylate and phenoxyethyl (meth)acrylate. Benzyl (meth)acrylate, phenoxydiethylene glycol (meth)acrylate, nonylphenol (meth)acrylate modified with ethylene oxide, hydroxyethylated naphthoquinone acrylate, Benzene (meth) acrylate, etc. The amount of the aromatic ring monomer (al) is from 8 to 35% by mass, preferably from 9.5 to 20% by mass, based on the constituent monomers of the acrylic polymer (A) as described above. The aromatic ring monomer (al) When the blending amount is less than 8% by mass, the birefringence suppressing property of the acrylic polymer (A) cannot be satisfied. When the blending amount of the aromatic ring monomer (al) exceeds 35% by mass, the acrylic polymer (A) The elastic modulus of the obtained adhesive layer is likely to be poor and the workability is poor. Further, the acrylamide-containing acrylic monomer constituting the acrylic polymer (A) of the present invention (hereinafter referred to as "the amide group" The body (a2)") is an acrylic monomer having a mercaptoamine group or an N-substituted anthracene group in the molecule. Specific examples of the aramidyl monomer (a2) are, for example, (meth)acrylamide, (A) Acetyl hydrazinomorpholine, N-hydroxymethyl (meth) acrylamide, N-hydroxyethyl (meth) acrylamide, N-methoxyethyl (meth) acrylamide, N , N-dimethyl methacrylate, N-isopropyl acrylamide, etc. The amount of the amide monomer (a2) is also as described above. In the constituent monomer of the olefinic polymer (A), it is 1 to 12% by mass, preferably 2.5 to 10% by mass. * When the amount of the amide-based monomer (a2) is less than 1% by mass, the obtained viscosity 201241124 In the composition of the composition, the reaction of the isocyanate-based crosslinking agent to be described later is not sufficiently promoted, and the elastic modulus of the obtained adhesive layer is lowered, and as a result, the depression is likely to occur and the workability is poor. Further, the preparation of the amide-based monomer (a2) When the amount is more than 12% by mass, the reaction of the isocyanate-based crosslinking agent in the obtained adhesive composition may excessively proceed, and the resulting adhesive layer may become unsuitable for adhesion. Further, the acrylic polymer of the present invention (A) In addition to the above aromatic ring monomer (al) and amidino group monomer (a2), an acrylic monomer having a linear or branched alkyl group having 1 to 12 carbon atoms in the molecule (hereinafter referred to as "acrylic acid") is further included. The body (a3)") is the main component. Specific examples of the acrylic monomer (a3 ·) are exemplified by methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, isopropyl (meth) acrylate, (A) Butyl acrylate, isobutyl (meth)acrylate, amyl (meth)acrylate, hexyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, (meth)acrylic acid Octyl ester, decyl (meth) acrylate, decyl (meth) acrylate, dodecyl (meth) acrylate, (methyl) propyl lauric acid, etc. The amount of the acrylic monomer (a3) to be added is 45 to 90% by mass, preferably 65 to 87% by mass, based on the constituent monomers of the acrylic acid-based polymer (A). In the polymerization of the acrylic polymer (A) of the present invention, in addition to the above various monomers, it is also possible to use a carboxyl group-containing acrylic monomer (hereinafter referred to as "carboxyl monomer (a4)"). (a4) is an acrylic monomer having a carboxyl group in the molecule. By blending the carboxyl monomer (a4) in an appropriate amount, the adhesion of the adhesive composition -10- 201241124 is improved. The carboxyl monomer (a4) may, for example, be (methyl 2-methylethyl (meth)acrylate, (meth)acrylic acid, 4-carboxybutyl (meth)acrylate, etc. In the constituent monomer of the acrylic polymer (A), (' is preferably from 1 to 5% by mass. The monomer constituting the acrylic polymer (A) is not included in the range of the object of the present invention. The above is also used in the range of 40% by mass or less based on the total amount of the monomers. The ratio of the optional monomer is more preferably 3% by mass or less. The exemplified by methoxyethyl (meth)acrylate, Methyloxyethyl ester, (meth)acrylic acid methoxydiethylene glycol acrylate alkoxyalkyl ester monomer, etc. Further, as any monomer, vinyl acetate, methyl styrene, N-ethylene Polymerization of each of the above monomers such as an epoxy group-containing acrylic monomer such as a vinyl monomer such as hexamethyleneamine or a glycidyl acrylate such as hexamethyleneamine can be obtained by using a general method for obtaining acrylic acid, for example, if necessary, Mix together and then add the appropriate polymerization initiator, with heat The molecular weight of the acrylic polymer (A) of the present invention is ', but it is preferably about 40 to 2,000,000, more preferably 50-) acrylic, 3 when it is used in an optical film. - carboxypropyl ester (a4) adjustment > 5 to 8 mass%, in addition to the above-mentioned optional, other monomer in the arbitrary one) acrylic acid (meth) styrene, α-, (methyl The action of the lanthanoid polymer in the solvent is not particularly limited, and the composition of the optical film of the present invention is prepared by using the acrylic polymer (A) obtained as described above at a weight of about -150,000. The reaction may be carried out by adding a specific amount of an isocyanate crosslinking agent to the acrylic polymer (A) according to a general method. In this case, a decane coupling agent may be added as needed. The optical film adhesive used in the present invention may be used. Examples of the isocyanate-based parent-linking agent (hereinafter referred to as "parent-linked agent (B)") in the composition include toluene diisocyanate, chlorophenyl diisocyanate, hexamethylene diisocyanate, and tetramethylene. Diiso-acid Isocyanate monomers such as isophorone diisocyanate, xylene diisocyanate, diphenylmethyl diisocyanate, hydrogenated diphenylmethyl diisodecanoate, etc., and such isocyanate monomers Isocyanate compound or isocyanuric acid vinegar compound, acetal type compound, polyether polyol or polyester polyol, acrylic polyol, polybutadiene polyol, poly A urethane prepolymer type isocyanate obtained by addition reaction of an isoprene polyol or the like. Among them, in the present invention, a toluene diisocyanate crosslinking agent is preferred. The amount of the agent (B) is 4 to 20 parts by weight, preferably 8 to 15 parts by weight, based on 1 part by weight of the acrylic polymer (A). However, in the present invention, the adhesive layer is self-adhered or adhered. The water migrated to the adhesive layer as a reaction with the isocyanate crosslinking agent (B) to form a polyurea, and it is presumed that the polyurea chain is complexed with the acrylic polymer (A) to form a simple and high Crosslinking different IPN (inter-invasive mesh polymer) structures. When the acrylic polymer (A) of the present invention contains a mercapto group-containing monomer (a2) as a constituent element, the polyurea formation reaction can be appropriately promoted, and as a result, the formation of the IPN structure is favorably performed. -12- 201241124. Thus, it is presumed that the adhesive composition for an optical film of the present invention exhibits a higher modulus of elasticity than the conventional adhesive composition containing an aromatic ring. When the amount of the crosslinking agent (B) is less than the above range, the IPN structure cannot be formed smoothly, and the obtained adhesive layer has a low modulus of elasticity, and is likely to be dented, resulting in deterioration of workability and durability. Poor. Further, when the amount of the crosslinking agent (B) is out of the above range, the polyurea chain which is excessively formed cannot be incorporated into the acrylic polymer structure to bleed out, and the adherend is contaminated when it is peeled off. In the preparation of the adhesive composition for an optical film of the present invention, in addition to the above acrylic polymer (A) and the crosslinking agent (B), a decane coupling agent may be blended as needed. By blending the decane coupling agent (hereinafter sometimes referred to as "cerane coupling agent (C)"), the effect of improving the adhesion to the adherend and the durability of the obtained adhesive layer can be obtained. The decane coupling agent (C) is exemplified by a fluorene-containing compound containing a polymerizable unsaturated group such as vinyl trimethoxy decane, vinyl triethoxy decane, methacryloxypropyl trimethoxy decane, and the like. - glycidoxypropyltrimethoxydecane, 3-glycidoxypropylmethyldimethoxydecane, 2-(3,4-epoxycyclohexyl)ethyltrimethoxydecane, etc. Epoxy-structured hydrazine compound '3-aminopropyltrimethoxydecane, N-(2-aminoethyl)-3-aminopropyltrimethoxydecane, N-(2-aminoethyl) -3 -Aminopropylmethyldimethoxydecane and the like, an amine group-containing hydrazine compound, 3-isocyanate propyl triethoxy decane, etc., an isocyanate group-containing hydrazine compound, 3 -mercaptopropyltrimethoxy A ruthenium-containing ruthenium compound such as decane, which contains an oxime oxime compound, '3-chloropropyltrimethoxydecane, and the like. Among these, a ruthenium compound having an epoxy structure of -13 to 201241124 is preferred. The blending amount of the coupling agent (c) is 0.05 to 1 part by weight, preferably 5 to 0.6 part by weight, per 100 parts by weight of the acrylic polymer (A). The adhesive composition for an optical film of the present invention is prepared by preparing an acrylic polymer (A), a crosslinking agent (b), and an optional coupling agent (c), but it may be dissolved in a solvent, etc. as needed. And applied to the optical film to form an adhesive layer. The optical film used for the adhesive composition for an optical film of the present invention is not particularly limited and can be used, for example, for a polarizing film, a retardation film, an elliptically polarizing film, an antireflection film, a brightness enhancement film, a light diffusion film, and a glass scattering. Film and surface protection film, etc. The adhesive composition for an optical film of the present invention forms a strong IPN structure by using a monomer containing a guanamine group and an isocyanate-based crosslinking agent, so that the adhesive of the aromatic ring monomer is used in comparison with the conventional one. The layer is a layer that can form an adhesive layer having a high modulus of elasticity. As a result, the occurrence of wrinkles or dents during winding of the defects of the past optical film can be suppressed. Further, 'similar to a monomer containing a mercapto group, although a monomer containing an amine group is listed, but if the monomer is replaced with a mercapto group-containing monomer, the strong IPN structure as in the present invention cannot be formed. Further, an adhesive layer excellent in sheet aging property cannot be obtained. Further, even if a monomer containing a guanamine group and an amine group-containing monomer are not able to obtain a sheet aging property comparable to that of the adhesive layer of the present invention, a strong IPN structure cannot be formed. Further, the acrylic polymer (A) of the present invention preferably contains substantially no acrylic monomer having a hydroxyl group of -14 to 201241124 as a constituent element in order to exhibit specific durability and workability to the adhesive layer. This is considered to be because when the acrylic polymer contains an active hydroxyl group, the hydroxyl group reacts rapidly with the isocyanate crosslinking agent, and the IPN structure intended for the present invention cannot be formed smoothly. [Examples] Hereinafter, the present invention will be described in more detail by way of Examples, Production Examples and Test Examples. However, the present invention is not limited by the examples. In the reaction apparatuses provided with a stirrer, a reflux condenser, a thermometer, and a nitrogen gas introduction tube, the weights shown in Table 1 were respectively fed (hereinafter, in the examples or tables, they may be simply referred to as "parts"). Each of the polymerization monomers and ethyl acetate was added with 0.1 part of azobisisobutyronitrile (manufactured by Otsuka Chemical Co., Ltd.) (hereinafter abbreviated as "AIBN"), and the air in the reaction vessel was replaced with nitrogen. Then, the temperature was raised to 72 ° C under stirring in a nitrogen atmosphere, and then an acrylic polymer having the molecular weights shown in Table 1 was obtained by a reaction for 8 hours. -15- 201241124

成組澧單表 SBf rL 1 CO UO ΙΛ .Ο 1 1 1 1 1 1 〇&gt; 产 ο οο § OJ LO Ο 1 1 Ln t 1 1 1 卜_ 产 o r- ο ι ι 翁 ι ι co ι co — § ο r-» ι ι ι co I 翁 ι ι σ&gt; g σ&gt; 卜 ι ι ι ι i ι co ι σ&gt; § οο r- 〇 ι ι ι ι co ι ι oo g 卜 r- ο ι ι l co ι ι ι oo — g 棚 ◦ 卜 1 1 O CO 1 1 1 1 oo &gt;·— o m LO 卜 1 O 1 CO 1 I 1 1 oo — g 寸 in wo .O 1 1 CO 1 1 . 1 LO T— f— oo o o CO ο O 1 1 O 1 1 1 1 OO T— o CM 卜 O J \ CO \ J 1 1 r-* cm o P- 〇 \ \ CO ； \ \ \ oo § &lt; 濉 O 2 2 &lt; &lt; UJ &lt; &lt; UJ LU &lt; Q 2 &lt; &lt; &lt; &lt;jCN^&lt;2〇.&lt;5 s—✓ QQQ.ma&lt;Q-&lt;Q 5 M实醑豳 llKl_^siM-zN 經线K 蠢Μ 猶癲缠1Ε·Ε-υζζ 猶震ΙΕ 避 ®MK]n«iii^趑涯Ε -K1猢祕琳氍涯κ ISH趑缑κ VL1JV ΙΛΙ α νν ΙΛίν V d 1 ΣννιΛια ΙΛίνν νοιιια μ d &lt; Ν m VUJH d &lt;00 Η-昆鹏駆-fl-Im 實施例1〜8、比較例1〜7 對製造例1~13中製造之丙烯酸系聚合物各100重量 -16- 201241124 份分別添加下表2所記載之交聯劑及矽烷偶合劑（〇 · 3重 量份）並經混合，獲得黏著劑組成物。 將所得黏著劑組成物以使乾燥後之厚度成爲20μιη之 方式塗佈於表面施有脫模處理之厚度38 μιη之聚對苯二甲 酸乙二酯（PET)樹脂薄膜上，在9(TC去除溶劑，獲得黏 著薄片。將該黏著薄片轉印於偏光薄膜之一面上，獲得附 黏著劑之偏光薄膜。 試驗例1 針對上述實施例及比較例中獲得之附黏著劑之偏光薄 膜’以下述評價方法評價該等之耐久性、薄片老化性、光 漏防止性及加工性各特性。結果與黏著劑組成物之調配一 起示於表2。 〈評價方法〉 (耐久性） 將上述附黏著劑之偏光薄膜分別裁斷成250mmx 3 5 Omm ’剝離p ET薄膜後，使貼附於玻璃基板上製作而成 之試料片在8 5 t /乾燥條件下放置5 〇 〇小時，進行耐熱耐 久注試驗°且’將同樣製作之試料片在60 °C/ 95 % RH放置 5〇〇小時’進行耐濕熱耐久性試驗。該等試驗後，以目視 觀察試料片上發生之發泡 '浮起、剝離之狀態’且以下述 基準評價耐久性。 -17- 201241124 評價 狀態 〇 ： 未見到有發泡、浮起、剝離等之外觀不良 △ : 見到稍有發泡、浮起、剝離等之外觀不良 x : 清楚地見到發泡、浮起、剝離等之外觀不良 (薄片老化性） 使上述附黏著劑之偏光薄膜在40 °C/5 0%RH下保存30 天後，使貼附於玻璃基板上製作之試料片在60°C/95%RH 下放置1 000小時，以目視觀察試料片上發生之發泡、浮 起、剝離之狀態，評價薄片老化性。又，評價基準與耐久 性中之基準相同。 (光漏防止性） 將如上述製作之附黏著劑之偏光薄膜兩片以相互正交 尼寇稜鏡（crossed nichol prism)之方式，使用層合滾筒 貼合於玻璃基板之表面與背面之各面上，接著，保持在調 整成50°C、5大氣壓之高壓釜中20分鐘，製作試料板。 將製作之試料板在85 °C之條件下放置500小時，以目視觀 察光漏防止性。評價基準如下。 評價 6 :未確認出有光漏，實用上沒有問題 5 :在0〜1.0mm之範圍確認到光漏，但光漏輕微，在 實用上沒有問題 -18- 201241124 4 :在0〜1 . 0mm之範圍確認到光漏，光漏比較濃，但 實用上沒有問題 3 :在1.0〜5.Omm之範圍確認到光漏，但光漏輕微， 實用上沒有問題 2 :在1·〇〜5 .Omm之範圍確認到光漏，且光漏較濃， 實用上有問題 1 :在5 _ Omm以上之範圍確認到光漏，實用上有問題 (加工性） 將剛塗佈後之附黏著劑之偏光薄膜切成1 00 X 1 00mm 之尺寸，總計製作1 00片之試料片，以使偏光板面朝上之 方式重疊該等試料片，自上方施加lkg之荷重，在23 °C、 5 0%RH之條件下放置3天，評價凹陷之發生。評價基準如 下。 評價 ◎:產生凹陷之薄片之總片數爲0片 〇：產生凹陷之薄片之總片數爲1〜5片 △:產生凹陷之薄片之總片數爲6〜10片 X :產生凹陷之薄片之總片數爲1 1片以上 〈結果〉 -19- 201241124Group 澧 表 table SBf rL 1 CO UO ΙΛ .Ο 1 1 1 1 1 1 〇&gt; ο οο § OJ LO Ο 1 1 Ln t 1 1 1 卜 产 o r- ο ι ι 翁 ι ι co ι Co — § ο r-» ι ι ι co I 翁 ι ι σ gt gt gt gt gt ι l co ι ι ι oo — g shed 1 1 1 O CO 1 1 1 1 oo &gt;· om LO 卜 1 O 1 CO 1 I 1 1 oo — g inch in wo .O 1 1 CO 1 1 . 1 LO T— f— oo oo CO ο O 1 1 O 1 1 1 1 OO T— o CM 卜 OJ \ CO \ J 1 1 r-* cm o P- 〇\ \ CO ; \ \ \ oo § &lt;濉O 2 2 &lt;&lt; UJ &lt;&lt; UJ LU &lt; Q 2 &lt;&lt;&lt;&lt;&lt;jCN^&lt;2〇.&lt;5 s—✓ QQQ.ma&lt;Q-&lt;Q 5 M 醑豳 llKl_^siM-zN Warp K Μ Μ 犹 犹 犹 犹 Ε Ε Ε υζζ ® M M M M M M M M M M M M M M M M M M M M M M M M M M M M M κ κ κ κ κ κ κ κ κ κ κ κ κ κ κ κ κ Νν Λίν V d 1 ΣννιΛια ΙΛίνν νοιιια μ d &lt; Ν m VUJH d &lt;00 Η-Kunpeng駆-fl-Im Examples 1 to 8 and Comparative Examples 1 to 7 Production Example 1 100 parts by weight of each of the acrylic polymers produced in ~13 -16-201241124 parts The crosslinking agent and the decane coupling agent (〇·3 parts by weight) described in the following Table 2 were added and mixed to obtain an adhesive composition. The obtained adhesive composition was applied to a polyethylene terephthalate (PET) resin film having a thickness of 38 μm which was subjected to a release treatment so as to have a thickness of 20 μm after drying, at 9 (TC removal). The adhesive sheet was obtained, and the adhesive sheet was transferred onto one surface of the polarizing film to obtain a polarizing film with an adhesive. Test Example 1 The polarizing film with the adhesive obtained in the above Examples and Comparative Examples was evaluated as follows. The evaluation of the durability, the aging property of the sheet, the light leakage prevention property, and the workability were shown in Table 2. The evaluation method (durability) The polarizing film was cut into 250 mm x 3 5 Omm, respectively. After peeling off the p ET film, the sample piece attached to the glass substrate was placed under an air condition of 8 5 t / dry for 5 hours, and subjected to a heat-resistant endurance test. 'The test piece prepared in the same manner was placed at 60 ° C / 95 % RH for 5 hrs for durability test. After these tests, the foaming occurred on the sample piece was visually observed. The state of peeling was evaluated and the durability was evaluated according to the following criteria. -17- 201241124 Evaluation status 〇: No appearance defects such as foaming, floating, peeling, etc. △ : Slightly foaming, floating, peeling, etc. Poor appearance x : Obviously, the appearance of foaming, floating, peeling, etc. is poor (sheet aging). The polarizing film of the above adhesive is stored at 40 ° C / 5 0% RH for 30 days, and then attached. The test piece prepared on the glass substrate was placed at 60 ° C / 95% RH for 1 000 hours, and the state of foaming, floating, and peeling occurring on the sample piece was visually observed to evaluate the aging property of the sheet. Further, the evaluation criteria and durability were evaluated. The basis of the same is the same. (Light leakage prevention) Two sheets of the polarizing film with an adhesive prepared as described above are bonded to the surface of the glass substrate by using a laminated roller in a manner of crossed nichol prisms. On the respective surfaces of the back surface, the sample plate was prepared by holding in an autoclave adjusted to 50 ° C and 5 atm for 20 minutes. The prepared sample plate was allowed to stand at 85 ° C for 500 hours to visually observe the light. Leak prevention. The standard is as follows. Evaluation 6: There is no light leakage confirmed, there is no problem in practical use 5: Light leakage is confirmed in the range of 0 to 1.0 mm, but the light leakage is slight, and there is no problem in practical use -18- 201241124 4 : at 0 to 1 The range of 0mm is confirmed to be light leakage, and the light leakage is relatively thick, but there is no problem in practical use. 3: Light leakage is confirmed in the range of 1.0 to 5.Omm, but the light leakage is slight, and there is no problem in practical use 2: in 1·〇~ 5. The range of Omm is confirmed to be light leakage, and the light leakage is thick. There is a problem in practical use. 1: Light leakage is confirmed in the range of 5 _ Omm or more, and there is a problem in practical use (processability). The polarizing film of the agent was cut into a size of 100 00 mm, and a total of 100 pieces of the test piece were produced, and the test piece was superposed so that the polarizing plate faced upward, and the load of lkg was applied from above, at 23 ° C, The condition of the dent was evaluated by placing it under conditions of 50% RH for 3 days. The evaluation criteria are as follows. Evaluation ◎: The total number of sheets in which the depressed sheets are formed is 0 sheets: the total number of sheets in which the depressions are formed is 1 to 5 sheets Δ: the total number of sheets in which the depressions are formed is 6 to 10 sheets X: the sheet having the depressions The total number of slices is 1 or more <Results> -19- 201241124

u 2 表 rL S a 〇〇◎〇〇〇〇〇 X Ο X ©&lt; X X m w CSJ CM « ^ CJ Τ- ΤΙ i：驾 職孬 οοοοοοοο 〇〇〇X X &lt; X 踏&lt;&lt; iSffi οοοοοοοο ΟΟΟ X 0&lt; X 直！ οοοοοοοο ΟΟΟ X Ο X Ο m &lt;Π SS 訟 cocococococococo οοοοοοοο 1 1 1 1 I 1 1 1 SSSESSSSS cocomoococococo CO CO CO CO CO CO CO o o o o o o o t 1 1 1 1 1 1 s s s s s s s C〇 〇Q c〇 CO CD OO CD m m οοοοοοοοοροροοορ 〕〕〕〕2 s〕3 zzzzgzzz οοοοοοοο Q^O^PiOiC^O^PCPC ΟΟΟΟΟΟΟΟ UUUUUUUU SSSSS5S Pllpg 888888^ &lt;Π 嵌 Γ-CSICO 寸 10&lt;0卜00 mmmmmmMm 堋绷棚|g腴棚棚 鉍銥菡銪銥銥鎌 r-cgco'tioior'oo 撢揖揖揖闺辑辑g K赋βΚΑ叙KA τ- N C0 寸 lO ID 卜 lis &quot;(蕻昵^»^豳嫉撇lll)E蘚识味祕赃：xcmiai (銪腚负避錨ffl-wig嵌恃B )匾磨保味避趣《«Η浒fr: ΊΗΙνΝΟΗΟυ 芳分 含成 之成 量 構 定爲 特作 有體 含單 由酸 用烯 使丙 ’ 之 解基 了胺 楚醯 清含 可與 2 澧 表單 及酸 1 烯 表丙 由之 環 香 -20- 201241124 之丙烯酸系聚合物所調製之黏著劑組成物之實施例1至8 之光學薄膜，爲在耐久性、薄片老化性、光漏防止性之特 性中良好者，且爲加工性亦優異者。 [產業上之可能利用性] 利用本發明之光學薄膜用黏著劑組成物之光學薄膜不 僅耐久性、薄片老化性、光漏防止性之特性良好，亦解決 了在以往之黏著劑中有問題的加工性之問題。據此本發明 爲可有利地利用於光學薄膜之製造者。 -21 -u 2 Table rL S a 〇〇 ◎ 〇〇〇〇〇 X Ο X ©&lt; XX mw CSJ CM « ^ CJ Τ- ΤΙ i: Driving 孬 οοοοοοοο 〇〇〇 XX &lt; X step &lt;&lt; iSffi οοοοοοοο ΟΟΟ X 0&lt; X straight! Οοοοοοοο ΟΟΟ X Ο X Ο m &lt;Π SS litigation cococococococo οοοοοοοο 1 1 1 1 I 1 1 1 SSSESSSSS cocomoococococo CO CO CO CO CO ooooooot 1 1 1 1 1 1 sssssss C〇〇Q c〇CO CD OO CD mm Οοοοοοοοοοροροοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοοο菡铕铱铱镰r-cgco'tioior'oo 撢揖揖揖闺 辑 g K K K ΚΑ βΚΑ KA KA τ- N C0 inch lO ID lib &quot; (蕻昵^»^豳嫉撇lll) E know Taste secret: xcmiai (negative avoidance anchor ffl-wig inlay B) 匾 保 保 《 《 Η浒 Η浒 Η浒 Η浒 Η浒 Η浒 Η浒 Η浒 Η浒 Η浒 Η浒 Η浒 Η浒 《 Η浒 Η浒 Η浒 芳 芳 芳 ΝΟΗΟυ 芳 芳 芳 芳 芳 芳 芳 芳 芳 芳 芳 芳 芳 芳 芳 芳 芳 芳 芳Examples 1 to 8 of the adhesive composition prepared by the acrylic polymer containing the acrylic polymer of the oxime -20-201241124 from the oxime form and the acid 1 olefin Optical film for durability, sheet aging, light leakage The properties characteristic of those well, and is also excellent in workability by. [Industrial Applicability] The optical film of the adhesive composition for an optical film of the present invention has excellent properties of durability, sheet aging property, and light leakage prevention property, and also solves problems in the conventional adhesive. The problem of processability. Accordingly, the present invention is advantageously used by the manufacturer of optical films. -twenty one -

Claims (1)

201241124 七、申請專利範圍： 1 · ~種光學薄膜用黏著劑組成物，其係相對於 8〜35重量份之含芳香環之丙烯酸單體與ι~12重量份 醯肢基之丙締酸單體作爲構成單體之丙嫌酸系聚合物 重量份’調配4〜20重量份之異氰酸酯系交聯劑而成。 2 ·如申請專利範圍第1項之光學薄膜用黏著劑 物’其含有45〜90重量份之含烷基之丙烯酸單體作爲 丙烯酸系聚合物之構成單體。 3.如申請專利範圍第2項之光學薄膜用黏著劑 物’其進而含有0.5〜8重量份之含羧基之丙烯酸單體 前述丙烯酸系聚合物之構成單體.。 4 _如申請專利範圍第1 ~ 3項中任一項之光學薄 黏著劑組成物’其中前述異氰酸酯系交聯劑爲甲苯二 酸酯系之硬化劑。 5 ·如申請專利範圍第1〜4項中任一項之光學薄 黏著劑組成物，其進而含有矽院系偶合劑。 6· —種光學薄膜，其特徵係於至少一面上設有 申請專利範圍第1〜5項中任一項之光學薄膜用黏著劑 物而得之黏著劑層。 含有 之含 100 組成 前述 組成 作爲 膜用 異氰 膜用 由如 組成 -22- 201241124 四、指定代表圖： (一） 本案指定代表圖為：無 (二） 本代表圖之元件代表符號簡單說明··無 201241124 五、本案若有化學式時，請揭示最能顯示發明特徵的化學 式：無201241124 VII. Patent application scope: 1 · An adhesive composition for optical film, which is based on 8 to 35 parts by weight of an aromatic ring-containing acrylic monomer and 1 to 12 parts by weight of an anthracene-based propionic acid The body is prepared by mixing 4 to 20 parts by weight of an isocyanate crosslinking agent as a part by weight of the acrylic acid-containing polymer constituting the monomer. 2. The adhesive for optical film according to claim 1 which contains 45 to 90 parts by weight of an alkyl group-containing acrylic monomer as a constituent monomer of the acrylic polymer. 3. The adhesive for optical film according to the second aspect of the invention, which further comprises 0.5 to 8 parts by weight of a carboxyl group-containing acrylic monomer, and a constituent monomer of the acrylic polymer. The optical thin-adhesive composition of any one of the above-mentioned claims, wherein the isocyanate-based crosslinking agent is a toluene-based hardener. The optical thin-adhesive composition according to any one of claims 1 to 4, which further comprises a broth-type coupling agent. An optical film obtained by providing an adhesive for an optical film according to any one of claims 1 to 5, which is provided on at least one side. Containing 100 composition of the above composition as a film for isocyanide film composition as -22- 201241124 IV. Designated representative figure: (1) The representative of the case is: No (2) The representative symbol of the representative figure is a simple description. ·No 201241124 5. If there is a chemical formula in this case, please reveal the chemical formula that best shows the characteristics of the invention: none
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KR102460966B1 (en) 2016-09-30 2022-11-01 닛토덴코 가부시키가이샤 Optical adhesive layer, manufacturing method of optical adhesive layer, optical film with adhesive layer, and image display device
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