200911939 九、發明說明： 【發明所屬之技術領域】 本發明係關於黏著劑、黏著片及附有黏著劑之光學薄 膜。更詳而言之’本發明係關於適合應用於偏光板、特別 是與視野角擴大薄膜等一體化所構成之偏光板、或相位差 板與偏光板積層之情形，該偏光板能與液晶胞耐久性良好 地黏合，同時所得到的液晶顯示裝置即使在高溫高濕環境 下亦具有難以生成漏光等的特性，以及於貼合錯誤之際等 可容易再剝離之黏著劑、黏著片及附有黏著劑之光學薄膜。 【先前技術】 以往，透過黏著劑將由有機材料所構成之片貼合於玻 璃、陶瓷、金屬等的被黏附物之情形中，隨時間經過，片 端部剝落、脫膠產生等不宜的事態係屢屢產生。 爲了解決像這樣的事態，一般係實施提高構成黏著劑 之成分的分子量、提昇交聯密度等，且使用提高黏著性能 之強黏著性材料。然而，使用像這樣的強黏著性材料的情 形雖然提高了保持力，但是在高溫高濕條件下，黏著劑係 變得無法符合因有機材料所構成之片的收縮或膨潤所發生 的形狀變化，而成爲各式各樣的障礙的發生主要原因。 光學構件之中，係有其表面貼合偏光板而使用者，可 舉出液晶顯示裝置（LCD)的液晶胞做爲其代表例。以下，使 用第1圖來加以説明。 該液晶胞1 3 —般係具有以形成配向層之2片透明電 極基板的配向層當作内側，利用間隔物配置成爲規定的胃 隔，密封其周邊，且於該間隔夾持液晶材料，同時於上述 200911939 2片的透明電極基板各自透過黏著劑1 2而配置有偏光板 1 1的構造。上述偏光板一般係由具有將光學性等方向性薄 膜、例如三乙醯纖維素（TAC)薄膜等貼合在聚乙烯醇系偏光 子的兩面而成之3層構造的偏光薄膜所構成的，並且於其 單面係設置有其目的爲貼附液晶胞等的光學構件之黏著劑 層。 又，如第2圖所.示之模式圖，爲了謀求改善視野角特 性，亦有在偏光板2 1與液晶胞2 3之間，透過黏著劑2 2 及2 5而配置相位差板2 4之情形。 如上述所構成之偏光板貼附於液晶胞等的光學構件之 情形、或貼附偏光板與相位差板之情形中，係成爲不同種 材料的多層構造，且因材料特性而缺乏尺寸安定性，特別 是高溫高濕環境下因收縮或膨潤所引起的尺寸變化變大。 由於該偏光板一般係使用前述的強黏著性者做爲黏著劑， 所以隨著偏光板的尺寸變化雖然能抑制脫膠或剝落，但是 該隨著偏光板的尺寸變化卻無法以黏著劑層來吸收應力， 而在偏光板的殘留應力變得不均一。其結果發現TN液晶 胞中容易形成所謂的「漏光」，而S T N液晶中容易形成「色 不均」的問題產生。 爲了解決像這樣的問題，揭示有例如藉由在黏著劑中 添加可塑劑等的低分子量體，使其適度軟化以賦予應力緩 和性的技術（例如，參照專利文獻1 )。然而，低分子量體的 添加係在剝離偏光板之際成爲污染液晶胞的原因，而且會 使得保持力降低，隨著時間的脫膠或剝落係變得容易發生。 200911939 另一方面’揭示有將以重量比100: 1〜100: 比例含有丙烯酸系共聚物、與於側鏈具有放射線聚 之丙烯酸系聚合物者’進行放射線交聯所構成之壓 劑片（例如’參照專利文獻2)。 於該公報中’雖然記載了做爲偏光板用的實施 是即使任一個實施例中，也沒有針對漏光性、與評 的尺寸有關的記載。本發明人等係無法滿足於使用 的實施例中所記載之壓感黏合劑於1 5吋大小之偏 價漏光性的結果。 如此一來’於偏光板用黏著劑中使黏合耐久性 防止性並存係變得困難，因而使其並存係成爲了課 特別是因車載用途等而要求嚴苛的耐久性之情 使黏合耐久性與漏光防止性並存係變得更爲困難。 又，在液晶顯示器等的製造步驟中，係有當偏 液晶胞等的光學構件進行貼合之際，於貼合位置產 之情形等，從貼合開始經過一段時間之後將偏光板 來，以再利用高價的液晶胞爲必要之情形。因此， 布於偏光板之黏著劑而予以貼合之後’例如即使經 間、或其以上的長時間之後’亦有能從液晶胞剝離 情形。像這樣即使經過長時間之後’亦能輕易剝離 黏著劑係爲所企求的。其係與用以賦予黏合耐久性 著力化爲相反之性質’而使其並存則成爲所欲解決二 【專利文獻1】專利第327292 1號公報 【專利文獻2】特開2 0 CM - 1 0 7 0 〇 5號公報 1 00的 合性基 感黏合 例，但 價試樣 該公報 光板評 與漏光 題。 形中， 光板與 生偏差 剝離下 透過塗 過1週 下來之 下來的 之強黏 1課題。 200911939 【發明內容】 發明所欲解決之課題 在像迫樣的狀況下’本發明之目的係提供適合應用於 例如偏光板、特別是與視野角擴大薄膜等一體化所構成之 偏光板、或偏光板與相位差板積層之情形，且該偏光板能 與液晶胞耐久性良好地黏合，同時所得到的液晶顯示裝置 即使在高溫高濕環境下亦具有難以產生漏光等的特性，且 從貼合開始經過一段時間之後，能從液晶胞輕易地剝離下 來（以下稱爲「再剝離」）之黏著劑、使用該黏著劑之黏著 片、及使用該黏著劑的附有黏著劑之光學薄膜。 解決課題之手段 一般做爲再剝離性黏著劑的特性，係有從貼付開始黏 著力上昇非常少，且即使低黏著力但耐久性亦爲優異之必 要。特別是偏光板用途中，低黏著力且耐久性優異係爲所 強烈期望的。然而，於實際的顯示器構成中，以低黏著力 是否能維持長時間的高耐久性之點係殘留爲不安材料。因 此，本發明人等係認爲開發爲了使黏著力上昇緩慢地發 生，且降低其上昇速度’所以再剝離性爲必要之貼付後1 4 天係在10N/25mm左右的可再剝離之黏著力領域，然後’ 往強黏著劑變化之黏著劑係爲重要的。此外，本發明中’ 於如此貼合後的規定期間具有可再剝離的黏著力領域’隨 後，變化爲強黏著力領域之性質係稱爲「再加工（reworking) 性」。 而且，開發應具有該再加工性之黏著劑而重複專心硏 200911939 究的結果，發現對於含有2種特定的丙烯酸系聚合物、與 活性能量射線固化型化合物之黏著性材料，照射活性能量 射線而形成之黏著劑係能適合其目的。 本發明係基於該知見而完成的。 亦即，本發明係提供 (1) 一種黏著劑，其係對含有成分（A)、成分（B)及成 分（C)之黏著性材料照射活性能量射線所構成之黏著劑， (A) 單體組成物聚合而成之重量平均分子量100萬以 上的丙烯酸系共聚物，該單體組成物係含有單體組成比爲 0.01〜5質量％的含羥基單體，且含有單體組成比爲〇.〇1 質量％以上、低於2.0質量％的含羧基單體， (B) 單體組成物聚合而成之重量平均分子量1〇〇萬以 上的丙烯酸系共聚物，該單體組成物係含有單體組成比爲 低於0.0 1質量％的含羥基單體，且含有單體組成比爲0.0 1 〜15.0質量％的含羧基單體，及 (C) 活性能量射線固化型化合物， 其中成分（A)與成分（B)之質量比爲1〇〇: 1〜1〇〇: 30, 且在23X：的儲存彈性模數（G’）爲0.3MPa以上； (2) 如上述（1)所記載之黏著劑，其中成分（A)與成分（c) 之質量比爲100: 1〜100: 40; (3) 如上述（1)或（2)所記載之黏著劑，其中成分（A)爲 重量平均分子量150萬以上的丙烯酸系共聚物； (4) 如上述（1)〜（3)項中任一項之黏著劑，其中更含有 (D)聚異氰酸酯化合物及（E)矽烷偶合劑，成分（A)中的含羥 200911939 基單體與成分（D)的莫耳比爲〇.8 : 1.2〜12 : 0.8，且成 分（A)與成分（E)之質量比爲1〇〇: 〇.；[〜；[〇〇: 〇.5; (5 )如上述（1)〜（4 )項中任一項之黏著劑，其中在2 3 °C的儲存彈性模數（G’）爲0.3〜l5MPa ; (6)如上述（1)〜（5)項中任一項之黏著劑，其中在80 °C的儲存彈性模數（G’）爲〇. 1〜15MPa ; (7 ) —種黏著片，其係在剝離片的剝離層上具有由如 (1)〜（6)項中任一項之黏著劑所構成之黏著性材料層； (8) —種黏著片，其係以2片剝離片的剝離層側爲相 接合的方式來夾持如（1)〜（6)項中任一項之黏著劑而形成 的； (9) 一種附有黏著劑之光學薄膜，其係在光學薄膜上 具有由如（1 )〜（6)項中任一項之黏著劑所構成之黏著性材 料層、及 (10) 如上述（9)所記載之附有黏著劑之光學薄膜，其 中上述光學薄膜爲偏光板。 發明效果 根據本發明能提供例如適合應用於偏光板、特別是與 視野角擴大薄膜等一體化所構成之偏光板、或相位差板與 ί扁光板積層之情形，該偏光板能與液晶胞耐久性良好地黏 合’同時所得到的液晶顯示裝置即使在高溫高濕環境下亦 具有難以生成漏光等的特性，且具有再加工性之黏著劑、 黏著片、附有黏著劑之光學薄膜、及附有黏著劑之偏光板。 【實施方式】 -11- 200911939 實施發明之最佳形態 本發明的黏著劑係組合使用不含有官能基之（甲基）丙 烯酸酯（主單體）、含有含羥基單體及含羧基單體爲構成單 位之丙烯酸系共聚物的成分（A)，與不含有官能基之（甲基） 丙烯酸酯（主單體）及含有含羧基單體爲構成單位、與實質 上不含有含羥基單體爲構成單位之丙烯酸系共聚物的成分 (B)係爲重要的。 藉由像這樣的組合，發現可以得到一邊能實現貼合的 優異耐久性’一邊能抑制貼合之後黏著力的上昇速度，且 要求再剝離性的期間具有能顯示再剝離領域之黏著力的再 加工性之黏著劑。 更具體而言，本發明的黏著劑係對含有下列成分（A)、 成分（B)及成分（C)之黏著性材料照射活性能量射線所構成 之黏著劑’其中：（A)單體組成物聚合而成之重量平均分子 量100萬以上的丙烯酸系共聚物，該單體組成物係含有單 體組成比爲ο _ 0 1〜5質量。/。的含羥基單體，且含有單體組 成比爲0 . Ο 1質量％以上、低於2.0質量。/。的含羧基單體， (B)單體組成物聚合而成之重量平均分子量1〇〇萬以上的 丙嫌酸系共聚物’該單體組成物係含有單體組成比爲低於 0 · 0 1質量。/。的含羥基單體，且含有單體組成比爲〇 . 〇 1〜 15.0質量％的含羧基單體，及（c)活性能量射線固化型化合 物。 成分（A)的丙烯酸系共聚物係以不含有（甲基）丙烯酸甲 酯或（甲基）丙嫌酸丁酯等的官能基之（甲基）丙烯酸酯爲主 200911939 單體’且單體與做爲交聯性官能基的含有羥基之單體與含 有羧基之單體的共聚物。對於本發明的黏著劑而言，成分 (A)的丙嫌酸系共聚物係賦予再剝離性、貼付之後控制經時 性黏著力變化的重要構成要素。 此外’於本發明中’所謂的（甲基）丙烯酸酯係意味著 丙烯酸酯及甲基丙烯酸酯兩者。其他的類似用語亦相同。 於上述成分（A)中，做爲不具有官能基之（甲基）丙烯酸 酯單體者係沒有特別地限制，可舉出例如酯部分之烷基的 碳數爲1〜20的（甲基）丙烯酸酯。此處，做爲酯部分之烷 基的碳數爲1〜20的（甲基）丙烯酸酯之例，可舉出（甲基） 丙烯酸甲酯、（甲基）丙烯酸乙酯、（甲基）丙烯酸丙酯、（甲 基）丙烯酸丁酯、（甲基）丙烯酸戊酯、（甲基）丙烯酸己酯、（甲 基）丙烯酸環己酯、（甲基）丙烯酸2-乙基己酯、（甲基）丙烯 酸異辛酯、（甲基）丙烯酸癸酯、（甲基）丙烯酸十二烷酯、（甲 基）丙烯酸肉豆蔻酯、（甲基）丙烯酸棕櫚醯酯、（甲基）丙烯 酸硬脂醯酯等。此等係可單獨使用、亦可組合2種以上使 用。 此等化合物之中，特別是從能得到適度的黏著性能， 且可輕易地製造重量平均分子量100萬以上的（甲基）丙烯 酸酯聚合物之點而言，以（甲基）丙烯酸丁酯爲佳。 做爲於上述成分（A)的含羥基單體之具體例，可舉出 (甲基）丙烯酸2 -羥基乙酯、（甲基）丙烯酸2 -羥基丙酯、（甲 基）丙烯酸3 -羥基丙酯、（甲基）丙烯酸2 -羥基丁酯、（甲基） 丙烯酸3 -羥基丁酯、（甲基）丙烯酸4_羥基丁酯等的（甲基） 200911939 丙烯酸羥基烷基酯等，此等之中特別是（甲基）丙烯酸2 -羥 基乙酯、（甲基）丙烯酸4-羥基丁酯從能輕易地製造重量份 平均分子量100萬以上的（甲基）丙烯酸聚合物之點而言爲 佳。 於上述成分（A)中，含羥基單體的含量以單體組成比係 在0.0 1〜5質量％的範圍。低於〇 . 〇 1質量％時，從於高溫 下的耐久性變差之點而言爲不適宜，超過5質量％時，高 溫，於高濕下的耐久性係爲不充分。基於以上的觀點，含 羥基單體的含量以單體組成比係在0 · 1〜4質量％的範圍爲 佳、0 · 5〜3質量％的範圍爲更佳。 做爲於上述成分（A)的含羧基單體之具體例，可舉出 (甲基）丙烯酸、巴豆酸、順丁烯二酸、檸康酸等，從可輕 易地製造重量平均分子量100萬以上的（甲基）丙烯酸酯共 聚物之點而言，以（甲基）丙烯酸爲佳。 又，於成分（A)中，含羧基單體的含量以單體組成比係 〇 · 0 1質量％以上、低於2.0質量。/。。低於0 _ 0 1質量。/。時， 不能使黏著力上昇，即使超過要求再剝離的期間，亦爲不 具有充分的黏著力者。又，爲2.0質量％以上時，在要求 再剝離之期間內的黏著力上昇很大，而不能發揮再加工 性。基於以上的觀點，含羧基單體的含量以單體組成比係 在0.1〜1.5質量％的範圍爲佳、0.2〜1.0質量。/。的範圍爲 更佳。 又，成分（A)的丙烯酸系共聚物係重量平均分子量爲 100萬以上。重量平均分子量低於100萬時，與被黏附物 200911939 的密合性或於高溫·高濕下的黏合耐久性變得不夠充分，且 會有脫膠或剝落等產生之情形。基於以上的觀點，重4 ¥ 均分子量爲120萬以上爲佳、150萬以上爲更佳。又，考 慮到密合性及黏合耐久性等時’該重量平均分子量係以 120萬〜220萬者爲佳、特別是以150萬〜200萬者爲佳。 又’表示重量平均分子量（Mw)與數量平均分子量（Mn)比率 之分子量分布（Mw/Mn)係以20以下爲佳。分子量分布爲 2 0以下時，得不到充分的黏合耐久性。 此外’重量平均分子量及數量平均分子量係爲根據凝 膠滲透（G P C )法所測定之聚苯乙烯換算値。 在該黏著性材料中，該成分（A)的丙烯酸系共聚物係可 單獨1種使用、亦可組合2種以上使用。 接著’成分（B)的丙烯酸系共聚物係以不具有官能基之 (甲基）丙烯酸酯爲主單體，且其與主要爲交聯性官能基之 含有羧基之單體的共聚物。關於不具有官能基之（甲基）丙 烯酸酯及含有羧基之單體的具體例，係與上述成分（~中所 記載者相同。 成分（B)中’含羧基單體的含量以單體組成比爲〇.〇1 〜1 5 · 0質量％的範圍。低於〇 · 〇 1質量。/d時，從在高溫下的 耐久性之點而言爲不充分，超過1 5.0質量％時，於高溫. 高濕下的耐久性變得不充分。基於以上的觀點，於成分（B) 的含羧基單體之含量，以單體組成比在〇 · 1〜8質量％的範 圍爲佳’除了充分的耐久性之外，從使再加工性的平衡提 昇之觀點而言，特別是3〜7質量。/。的範圍爲更佳。 200911939 又’成分（B)中，實質上不含有含羥基單體，且以單體 組成比爲低於〇 . 0 1質量％。藉由使含羥基單體的含量低於 0.0 1質量％ ’可得到能抑制對於玻璃之急遽黏著力上昇的 效果。基於以上的觀點，於成分（B)中不含有含羥基單體爲 佳。 成分（B)的丙烯酸系共聚物係重量平均分子量爲1〇〇 萬以上。重量平均分子量低於100萬時，係與成分（A)中所 記載者相同’與被黏附物的密合性或於高溫.高濕下的黏合 耐久性變得不充分，而有脫膠或剝落等產生之情形。考慮 到密合性及黏合耐久性等時，該重量平均分子量係以1 2 0 萬〜220萬者爲佳、特別是150萬〜200萬者爲佳。又， 關於表示重量平均分子量（Mw)與數量平均分子量（Μη)比 率的分子量分布（Mw/Mn)，亦與成分（Α)相同，以20以下 爲佳。分子量分布爲2 0以下時，能得到充分的黏合耐久性。 此外，在該黏著性材料中，該成分（B)的丙烯酸系聚合 物係可單獨1種使用、亦可組合2種以上使用。 本發明的黏著性材料中，上述成分（A)與成分（B)的質 量比（成分（A):成分（B))係在 100: 1〜100: 30的範圍。 該質量比低於1 〇 〇 : 1、亦即成分（B )的含量相對於成分 (A) 100質量份爲低於1質量份時，得不到充分的黏著耐久 性，特別是在要求嚴苛的耐久性之情形下，黏合性變得不 充分。另一方面，上述質量比超過100: 30、亦即成分（B) 的含量相對於成分（A) 1 0 0質量份爲超過3 0質量份時’得 不到充分的再剝離性。基於以上的觀點，成分（A):成分（B) 200911939 係以1 Ο Ο : 5〜1 Ο Ο : 2 0的範圍爲佳。 上述成分（Α)及成分（Β)中’只要在不損及本發明效果 之範圍內，亦可含有可共聚合的成分做爲構成成分。具體 而言，係含有做爲官能基之醯胺基、胺基等的單體，具體 例係可舉出（甲基）丙烯醯胺、Ν-甲基（甲基）丙烯醯胺、Ν-羥甲基（甲基）丙烯醯胺等的丙烯醯胺類；（甲基）丙烯酸單甲 基胺基乙酯、（甲基）丙烯酸單乙基胺基乙酯、（甲基）丙烯酸 單甲基胺基丙酯、（甲基）丙烯酸單乙基胺基丙酯等的（甲基） 丙烯酸單烷基胺基烷酯等。此等的單體係可單獨使用、亦 可組合2種以上使用。 本發明的黏著性材料中，做爲成分（C)所使用的活性能 量射線固化型化合物係可使用2官能〜6官能的各種多官 能（甲基）丙烯酸酯單體，可舉出特別是以分子量低於i〇〇〇 的多官能（甲基）丙烯酸酯系單體爲佳。 做爲多官能（甲基）丙烯酸酯系單體，可舉出例如丨，4 -丁二醇二（甲基）丙烯酸酯、1>6_己二醇二（甲基）丙烯酸酯、 新戊二醇二（甲基）丙烯酸酯、聚二醇二（甲基）丙烯酸酯、新 戊二醇己二酸酯二（甲基）丙烯酸酯、羥基新戊酸新戊二醇 一（甲基）丙稀酸酯、二環戊烯基二（甲基）丙烯酸酯、己內酯 改質一環戊嫌基二（甲基）丙烯酸酯、環氧乙烷改質磷酸二 (甲基）丙嫌酸醋、二（甲基）丙烯醯氧基乙基異三聚氰酸酯、 方基化環己基二（甲基）丙烯酸酯、三環癸烷二甲醇（甲基） 丙燦酸醋、二經甲基二環戊烷二（甲基）丙烯酸酯、環氧乙 h改質六氫苯二甲酸二（甲基）丙烯酸酯、三環癸烷二甲醇 200911939 (甲基）丙烯酸酯、新戊二醇改質三羥甲基丙烷二（甲基）丙稀 酸酯、金剛烷二（甲基）丙烯酸酯等的2官能型；三羥甲基 丙烷三（甲基）丙烯酸酯、二季戊四醇三（甲基）丙烯酸酯、丙 酸改質二季戊四醇三（甲基）丙烯酸酯、季戊四醇三（甲基） 丙烯酸酯、環氧丙烷改質三羥甲基丙烷三（甲基）丙烯酸 酯、三（甲基）丙烯醯氧基乙基異三聚氰酸酯等的3官能型： 二丙三醇四（甲基）丙烯酸酯、季戊四醇四（甲基）丙烯酸酯等 的4官能型；丙酸改質二季戊四醇五（甲基）丙烯酸酯等的5 官能型；二季戊四醇六（甲基）丙烯酸酯、己內酯改質二季 戊四醇六（甲基）丙烯酸酯等的6官能型等。 本發明中，此等的多官能（甲基）丙烯酸酯系單體係可 僅單獨1種使用、亦可組合2種以上使用，惟此等之中較 佳係含有骨格構造中具有環狀構造者。環狀構造係可爲碳 環式構造、亦可爲雜環式構造，又亦可爲單環式構造或多 環式構造。做爲像這樣的多官能（甲基）丙烯酸酯系單體， 係例如以二（甲基）丙烯醯氧基乙基異三聚氰酸酯、三（甲基） 丙烯醯氧基乙基異三聚氰酸酯等的具有異三聚氰酸酯構造 者、二羥甲基二環戊烷二（甲基）丙烯酸酯、環氧乙烷改質 六氫苯二甲酸二（甲基）丙烯酸酯、三環癸烷二甲醇（甲基） 丙烯酸酯、新戊二醇改質三羥甲基丙烷二（甲基）丙烯酸 酯、金剛烷二（甲基）丙烯酸酯等爲適宜，特別是以具有異 三聚氰酸酯構造者爲佳。 又，成分（C )係可使用活性能量射線固化型的丙烯酸酯 系寡聚物。該丙烯酸酯系寡聚物較佳係重量平均分子量 -18- 200911939 50,000以下。做爲像這樣的丙烯酸酯系寡聚物之例，可舉 出聚酯丙烯酸酯系、環氧基丙烯酸酯系、胺甲酸酯丙烯酸 酯系、聚酯丙烯酸酯系、聚丁二烯丙烯酸酯系、聚矽氧丙 烯酸酯系等。 此處，做爲聚酯丙烯酸酯系寡聚物，係可例如藉由以 (甲基）丙烯酸來酯化於多元羧酸與多元醇的縮合所得到之 兩末端具有羥基之聚酯寡聚物的羥基，或以（甲基）丙烯酸 來酯化於多元羧酸加成環氧烷所得之寡聚物末端的羥基， 而可得到。環氧基丙烯酸酯系寡聚物係例如可使（甲基）丙 烯酸，與比較低分子量之雙酚型環氧樹脂、或酚醛清漆型 環氧樹脂的環氧乙烷環反應、進行酯化而可得到。又，該 環氧基丙烯酸酯系寡聚物亦可使用部分以二元羧酸酐改質 之羧基改質型的環氧基丙烯酸酯寡聚物。胺甲酸酯丙烯酸 酯系寡聚物係可藉由以（甲基）丙烯酸來酯化例如聚醚多元 醇、聚酯多元醇與聚異氰酸酯反應所得之聚胺甲酸酯寡聚 物而得到，多元醇丙烯酸酯系寡聚物係可藉由以（甲基）丙 烯酸來酯化聚醚多元醇的羥基而得到。 上述丙烯酸酯系寡聚物的重量平均分子量’根據GPC 法所測定之標準聚甲基丙烯酸甲酯換算之値，如上述般爲 50,000以下爲佳、更佳係500〜50,000、尤佳係選自於 3,000〜40000的範圍。 此等的丙烯酸酯系寡聚物係可單獨1種使用、亦可組 合2種以上使用。 本發明中，成分（C)亦可使用於側鏈導入具有（甲基）丙 200911939 烯醯基之基的加成物丙烯酸酯系聚合物。像這樣的 丙烯酸酯系聚合物係可使用例如前述的成分（A)或, 中所説明的（甲基）丙烯酸酯、與於分子内具有官能 體的共聚物，且藉由將該共聚物之官能基的一部份 有（甲基）丙烯醯基及能與該官能基反應之基的化合 反應而得到。該加成物丙烯酸酯系聚合物的重量平 量，以聚苯乙烯換算係通常爲50萬〜200萬。 本發明中，成分（C)係可從上述的多官能丙烯酸 體、丙烯酸酯系寡聚物及加成物丙烯酸酯系聚合物 適宜選擇1種使用、亦可選擇2種以上倂用。 本發明中，成分（C)的活性能量射線固化型化合 有比例係相對於上述成分（A)的丙烯酸系聚合物，從 的黏著劑之性能面而言，以質量比（成分（A):成另 100: 1〜1〇〇: 40的範圍爲佳。 在該範圍內時，從不妨礙成分（A)及成分（B)的 活性能量射線照射後黏著劑的儲存彈性模數能控制 合範圍之點而言係爲有利。基於以上的觀點，成分 分（C)係在1〇〇: 5〜1〇〇: 30的範圍爲更佳。 於本發明的黏著性材料中，可根據要求含有光 始劑。做爲該光聚合起始劑，可舉出例如苯偶姻、 甲基醚、苯偶姻乙基醚、苯偶姻異丙基醚、苯偶姻 醚、苯偶姻異丁基醚、苯乙酮、二甲基胺基苯乙 二甲氧基-2-苯基苯乙酮、2,2-二乙氧基-2-苯基苯 2 -羥基-2-甲基- ；l_苯基丙-1-酮、1-羥基環己基苯 加成物 成分（B) 基之單 ，與具 物進行 均分子 酯系單 之中， 物之含 所得到 、（C))在 特性且 於最適 (A):成 聚合起 苯偶姻 正丁基 I ' 2,2- 乙ϋ、 j 酮、2 - -20- 200911939 甲基- l- [4-(甲硫基）苯基]-2 -味琳基-丙-1-酮、4-(2 -經基乙 氧基）苯基- 2-(羥基-2-丙基）酮、二苯甲酮、p-苯基二苯甲 酮、4,4’-二乙基胺基二苯甲酮、二氯二苯甲酮、2-甲基蒽 醌、2 -乙基蒽醌、2 -第三丁基蒽醌、2 -胺基蒽醌、2 -甲基 噻噸酮、2 -乙基噻噸酮、2 -氯噻噸酮、2,4 -二甲基噻噸酮、 2,4 -二乙基噻噸酮、苄基二甲基縮酮、苯乙酮二甲基縮酮、 p-二甲基胺基安息香酸酯、寡[2 -羥基-2-甲基-l-[4-(l -甲 基乙烯基）苯基]丙酮】、2,4,6-三甲基苯甲醯基-二苯基-氧 化膦等。此等係可單獨1種使用，亦可組合2種以上使用， 又其摻混量係相對於上述成分（C) 1 00質量份，一般係在 0 · 2〜2 0質量份的範圍選擇。 於本發明的黏著性材料中，可根據需要含有交聯劑。 做爲該交聯劑者係沒有特別地限制，可從於以往丙烯酸系 黏著劑中慣用做爲交聯劑者之中，適當選擇任意者來使 用。做爲像這樣的交聯劑，可舉出例如聚異氰酸酯化合物、 環氧樹脂、三聚氰胺樹脂、脲樹脂、二醛類、羥甲基聚合 物、K環丙烷系化合物、金屬螯合化合物、金屬醇鹽、金 屬鹽等’惟較佳係使用聚異氰酸酯化合物（成分（D))。 此處’做爲（D)聚異氰酸酯化合物，可舉出甲苯二異氰 S*酉曰、〜苯基甲院二異氰酸酯、苯二甲基二異氰酸酯等的 芳香族聚異氰酸酯、六亞甲基二異氰酸酯等的脂肪族聚異 氰酸酯、異佛爾酮二異氰酸酯、加氫二苯基甲烷二異氰酸 醋等的脂環式聚異氰酸酯等、及彼等之縮二脲、異三聚氰 Ss·酯體，以及與乙一醇、丙二醇、新戊二醇、三經甲基丙 -21- 200911939 烷、蓖麻油等含有低分子活性氫之化合物的反應物加成物 等。 此等之中，例如從能使與做爲偏光板的表面材料使用 之三乙醯纖維素（TAC)薄膜的密合性提昇之點而言，以異氰 酸酯系交聯劑爲佳。 本發明中，上述交聯劑係可單獨1種使用、亦可組合 2種以上使用。又，其使用量亦根據交聯劑的種類，惟相 對於上述成分（A)的丙烯酸系聚合物100質量份，一般係爲 0·01〜20質量份、較佳爲0.1〜10質量份。 又，使用（D)聚異氰酸酯化合物之情形中，上述成分（Α) 中的含羥基單體與（D)聚異氰酸酯化合物的莫耳比較佳係 在0.8: 1.2〜1.2: 0.8的範圍。在該莫耳比的範圍時，從 不會妨礙成分（Α)及成分（Β)的特性且能將活性能量射線照 射後黏著劑的儲存彈性模數控制在最適合的範圍之點而爲 佳。 於本發明的黏著性材料中，可根據需要含有做爲成分 (Ε)之矽烷偶合劑。藉由含有該矽烷偶合劑，在偏光板等的 光學薄膜例如與液晶胞等貼合之情形中，能使得黏著劑 與液晶胞之間的密合性更爲良好。做爲該矽烷偶合劑者係 於分子内具有至少1個烷氧基矽烷基之有機矽化合物，與 黏著劑成分沒有相溶性’且具有光透過性者、例如實質上 爲透明者爲適宜。像這樣的矽烷偶合劑的添加量係成分（A) 與（E)矽烷偶合劑之質量比爲100: 0·1〜100: 0.5的範圍 爲佳。在該莫耳比的範圍時’從與液晶胞等的無鹼玻璃之 -22 - 200911939 密合性及再剝離性能並存之點而言爲佳。 做爲上述矽烷偶合劑之具體例，可舉出乙烯基三甲氧 基矽烷、乙烯基三乙氧基矽烷、甲基丙烯醯氧基丙基三甲 氧基矽烷等的含有聚合性不飽和基之矽化合物；3_環氧丙 氧基丙基三甲氧基矽烷' 2-(3,4-環氧環己基）乙基三甲氧 基矽烷等的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的含有胺基之 矽化合物；3 -氯丙基三甲氧基矽烷等。此等係可單獨1種 使用、亦可組合2種以上使用。 本發明的黏著劑係對於如此所得之上述黏著性材料照 射活性能量射線而形成者。 做爲活性能量射線，可舉出例如紫外線或電子束等。 上述紫外線係可由高壓水銀燈、無電極燈、氙氣燈等得到， 另一方面，電子束係可藉由電子束加速器等而得到。該活 性能量射線之中，特別是以紫外線適宜。此外，使用電子 束之情形係可不添加光聚合起始劑而形成黏著劑。 做爲對於該黏著性材料之活性能量射線的照射量，係 以能得到適宜的儲存彈性模數 '具有對於無鹼玻璃之黏著 力的交聯化黏著劑的方式而適宜選定，惟在紫外線之情形 係以照度爲 50〜1000 mW/cm2、光量爲 50〜1〇〇〇 mJ/cm2 '電子束之情形係以10〜1〇〇〇 krad的範圍爲佳。 本發明的黏著劑係必須在2 3 t的儲存彈性模數（G ’）爲 0.3 Μ P a以上。該儲存彈性模數（g ’）若爲0 · 3 Μ Pa以上能得 -23 - 200911939 到充分的漏光防止性。關於在2 3。(：的儲存彈性模數（G，）的 上限係沒有特別地限制，惟爲了能得到黏合耐久性更良好 的黏著劑，較佳爲50MPa以下、更佳爲15MPa以下。基 於以上的觀點’特佳係在23 °C的儲存彈性模數（G，）爲0.35 〜12MPa。又’在80°C的儲存彈性模數（G，）一般係0. IMPa 以上爲佳、更佳係〇_1〜15MPa、特佳係0.3〜lOMPa。 此外，上述儲存彈性模數（G ’）係根據下述的方法所測 定之値。 <儲存彈性模數（G ’）的測定方法> 儲存彈性模數（G ’）係積層厚度3 0 # m的黏著劑以製作 8 m m φ X 3 m m厚的圓柱狀試驗片，並根據扭力剪斷法，以 下述的條件來進行測定。 測定裝置：Rheometric公司製動的粘彈性測定裝置 「DYNAMIC ANALYZER RDAII」 頻率：1 Hz 溫度·- 2 3。。、8 ◦。。 又，本發明的黏著劑係可將對於無鹼玻璃的黏著力在 貼合後14天，抑制於ION/25mm。因此，即使從貼合開 始至經過1 4天後，亦不會對液晶胞造成破損且可再剝離。 此外，關於該黏著力的下限値，一般較佳係0 2 N / 2 5 m m 以上。該黏著力若爲0.2 N / 2 5 m m以上’偏光板係能以充 分的黏著力與液晶胞等貼合。 此外，上述黏著力係按照下述的方法所測定之値。 <與無鹼玻璃的黏著力> -24 - 200911939 從附有黏著劑之偏光板切出25mm寬、100mm長的 試樣，將剝離薄膜剝離下來（黏著劑層的厚度爲2 5 // m)， 貼附於無鹼玻璃[CORNING公司製「1737」]上之後，在栗 原製作所製高壓釜中，以〇 · 5 Μ P a、5 0 °C、2 0分鐘的條件 進行加壓。隨後，在2 3 °C、5 0 % R Η環境下放置1 4天後， 使用拉伸試驗機（ORIENTIC公司製「TENSILON」），以剝離 速度3 0 0 m m /分、剝離角度1 8 0°的條件測定黏著力。 本發明的黏著劑較佳係凝膠分率爲8 5 %以上。亦即， 在有機溶媒抽出程度之低分子量成分較少的情形，於加熱 下或溫熱下的環境中脫膠或剝落、對於被黏附物的污染很 少，凝膠分率爲85%以上之黏著性材料係耐久性或安定性 較高。凝膠分率係更佳爲90〜99.9%。 本發明的黏著劑中，在不損及本發明目的之範圍內， 可根據需要添加於丙烯酸系黏著劑中通常使用之各種添加 劑，例如可添加黏著賦予劑、抗氧化劑、光安定劑、軟化 劑、塡充劑等。 本發明的黏著劑係適用於由偏光薄膜單獨所構成之偏 光板，該偏光板係例如可使用與液晶胞黏合者，特別是適 用於偏光薄膜與視野角擴大薄膜一體化而成之偏光板，該 偏光板係例如較佳可使用與液晶胞黏合者。 做爲上述偏光薄膜與視野角擴大薄膜一體化所構成之 偏光板，可舉出例如在聚乙烯醇系偏光子的兩面、各自貼 合三乙醯纖維素（TAC)薄膜而成之偏光薄膜的單面，藉由例 如由塗布碟狀液晶所構成之視野角擴大機能層（視野角擴 -25 - 200911939 大薄膜）所設置者、或以黏合劑貼合視野角擴大薄膜而成者 等。該情形下，黏著劑係設置於上述視野角擴大機能層或 視野角擴大薄膜側。 又，做爲偏光板者係可於聚乙烯醇系偏光子的單面貼 附三乙醯纖維素（TAC)薄膜，在另一面貼合由環烯烴系薄膜 或聚碳酸酯薄膜等所構成之相位差薄膜。該情形下，黏著 劑係設置於相位差薄膜側。 又，即使在如第2圖所示之偏光板與液晶胞之間有相 位差板之情形下，本發明的黏著劑亦能適當使用。亦即， 由偏光薄膜單獨所構成之偏光板與相位差板係利用本發明 的黏著劑進行貼合以製造光學薄膜，且該光學薄膜的相位 差板與液晶胞係利用黏著劑而貼合者。此處，貼合相位差 板與液晶胞之黏著劑係沒有特別地限制，可使用用於一般 偏光板與液晶胞的貼合所使用的黏著劑。具體而言，可舉 出特開平1 1 - 1 3 1 0 3 3所揭示的丙烯酸系共聚物、由交聯劑 及矽烷偶合劑所構成之黏著性材料等。此外，偏光板與液 晶胞的貼合亦可使用本發明的黏著劑。 使用本發明的黏著劑’且如上述般藉由將偏光板與液 晶胞或相位差板黏合所作製的液晶顯示裝置，即使在高溫 高濕環境下亦難以產生漏光，而且偏光板與液晶胞的黏合 耐久性非常優異。 本發明又提供一種在光學薄膜上、例如偏光板上，具 有前述由本發明的黏著劑所構成之層的附有黏著劑之光學 薄膜。做爲該偏光板’如前所述，亦可由偏光薄膜單獨所 -26 - 200911939 構成者，惟在如第1圖所示構成之情形中，偏光薄膜與視 野角擴大薄膜一體化而成者爲佳。 又，上述由黏著劑所構成之黏著劑層的厚度係一般爲 5〜100# m左右、較佳爲10〜50//m、尤佳爲10〜30// m。 關於該附有黏著劑之光學薄膜的製造方法，只要是能 在偏光板等的光學薄膜上設置由本發明的黏著劑所構成之 層的方法即可’沒有特別地限制，惟若根據以下所示本發 明的方法’可更有效率地製造所期望的附有黏著劑之光學 薄膜。 本發明的方法中，將偏光板貼合於剝離片的剝離層上 所設置之黏著性材料層之後，以使得上述黏著性材料層成 爲具有前述規定特性之由本發明黏著劑所構成之層的方 式’從該剝離片側照射活性能量射線，而可得到本發明的 附有黏著劑之光學薄膜。 做爲上述剝離片，可舉出在聚對苯二甲酸乙二酯、聚 對苯二甲酸丁二酯，聚萘二甲酸乙二酯等的聚酯薄膜上、 聚丙烯或聚乙烯等的聚烯烴薄膜等的塑膠薄膜上，塗布聚 矽氧樹脂等的剝離劑而設置有剝離層者等。關於該剝離片 的厚度係沒有特別地限制，一般係在2 0〜1 5 0 // m左右。 又’關於黏著性材料及活性能量射線的照射條件，係 如前述本發明的黏著劑中所説明的。 做爲於剝離片上設置黏著性材料層之方法’係可使用 採用例如棒塗法、刮刀法、輥塗法、刮板塗布法，印模塗 布法、凹版塗布法等，塗布加入較佳溶劑之黏著性材料後 -27 - 200911939 使塗膜形成、乾燥之方法。乾燥條件係沒有特別地限制， 惟一般係在50〜150°C、10秒〜10分鐘左右。又，所使 用的溶劑係沒有特別地限制，可舉出甲苯、乙酸乙酯、甲 基乙基酮等。 又，如第1圖所示構成之情形中，偏光板係由偏光薄 膜單獨所構成之情形很多，由黏著劑所構成之黏著劑層的 厚度係與上述相同。關於如第1圖所示構成的附有黏著劑 之偏光板的製造方法，只要是與上述同様地能得到在偏光 板上設置有由本發明的黏著劑所構成之黏著劑層的方法即 可，沒有特別地限制。根據上述本發明的製造方法，可更 有效率地進行製造。 再者，如第2圖所示構成之情形中，可以2片剝離片 的剝離層側相連接的方式，預先製作夾持上述黏著劑所構 成之黏著片，使用該黏著片以貼合偏光板與相位差板。此 處，活性能量射線係可在夾持黏著性材料之後對2片的剝 離片進行照射，亦可在另一方的剝離片上設置黏著性材料 層，且在照射活性能量射線之後以其他的剝離片進行夾 持。此外，活性能量射線的照射條件係以成爲具有前述規 定特性的由本發明黏著劑所構成之層的方式來選擇。 使用該黏著片以製造本發明的光學薄膜之情形中，黏 著片的剝離片被剝離下來，並藉由一般的方法與偏光板貼 合在一起。 本發明中，自黏著片將剝離片剝離下來之際的剝離 力，係以3 0 m /分的速度剝離之情形中，較佳爲1 〇 〇 m N / -28 - 200911939 25mm以下。剝離力爲100mN/25mm以下時，剝離帶電 難以產生，且不會在製作本發明的偏光板等之際卷人胃 物。特別是應用於大型電視等用途之情形爲有效。 此外，除了偏光板以外，可適用具有本發明的再加I 性之黏著劑之光學薄膜，可舉出相位差薄膜 '及電漿顯$ 器面板或液晶顯示器面板等的顯示器表面之保護薄膜g , 惟並不受限於此等。 實施例 接著，根據實施例以更詳細地說明本發明，惟本胃曰月 係不因此等之例而受到任何限定。 此外，於實施例1〜7及比較例1〜6中所得到之黏著 劑的性能及附有黏著劑之偏光板的性能，係依照以下所# 之要領而求得。 (1) 黏著劑的儲存彈性模數 根據說明書本文記載的方法，測定在2 3 eC及8 0 °C白勺 儲存彈性模數。 (2) 黏著力（與無鹼玻璃的黏著力） 根據說明書本文記載之方法，測定與無鹼玻璃的黏著 力。黏著力的測定係在高壓釜，以0 _ 5 Μ P a、5 0 t、2 0分 鐘的條件加壓之後，在2 3 °C、5 Ο % R Η環境下，測定分別 放置1天、14天、及21天之後者。 (3) 凝膠分率 秤量由各實施例及比較例的成分（A)〜成分（Ε)所構成 之黏著劑組成物（初期質量），將其投入乙酸乙酯中，使用 -29- 200911939 索格利特抽出裝置進行1 6小時以上回流之後’僅抽出不溶 分。乾燥去除該不溶分中所含有的溶劑之後’秤量（不溶分 質量）並按照以下之式求得凝膠分率。 凝膠分率（％) =(不溶分質量/初期質量）χΐ00 (4)附有黏著劑之偏光板的耐久性 藉由裁切裝置（荻野精機製作所公司製Super Cutter ΓΡΝ卜600」），將附有黏著劑之偏光板調整成 233mmx 309mm尺寸之後，貼合於無鹼玻璃[CORNING公司製「 1 73 7」]後’在栗原製作所公司製高壓釜中，以〇.5MPa， 5 0 °C、2 0分鐘的條件加壓。然後，投入至下述各耐久條件 之環境下，於2 0 0小時後，使用1 0倍率放大鏡進行觀察， 利用以下的判定基準來評價耐久性。 A :於4邊中，從外周端部起〇 · 3 m m以上沒有缺陷。 B :於4邊中，從外周端部起〇 · 6 m m以上沒有缺陷。 C :於4邊的任1邊中，從外周端部起〇 . 6 m m以上有 脫膠、剝落 '發泡、條紋等的低於〇 . 1 m m之黏著劑的外觀 ' 異常缺陷。 D :於4邊的任1邊中，從外周端部起〇 . 6 m m以上有 脫膠、剝落、發泡、條紋等的〇 . 1 m m以上之黏著劑的外觀 異常缺陷。 <耐久條件> 8 0 °C乾燥環境、9 0。(：乾燥環境、6 0 °C .相對濕度9 0 % 環境 -20 °C㈡60 °C的各30分鐘之熱震盪試驗、200個循環 -30- 200911939 (5 )漏光性能 藉由裁切裝置（荻野精機製作所公司製Super Cutter ΓΡΝ：1-600」）’將附有黏著劑之偏光板調整成233mmx 309mm尺寸之後’貼合於無鹼玻璃[CORNING公司製「 1737」】後’在栗原製作所公司製高壓釜中，以〇.5Mpa、 5 0 °C、2 0分鐘的條件加壓。此外，上述貼合係在無鹼玻璃 的表裏’以附有黏著劑之偏光板係偏光軸成爲正交尼科耳 狀態的方式來進行。以該狀態於8 0 °C乾燥環境下放置2 0 0 小時後’依照以下所示之方法來評價漏光性。 使用大塚電子公司製MCPD-2000，測定第3圖所示 之各領域的亮度’亮度差△ L *係依照下式而求得，並成爲 漏光性。 △ L* = [(b + c + d + e}/4] — a200911939 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD The present invention relates to an adhesive, an adhesive sheet, and an optical film with an adhesive attached thereto. More specifically, the present invention relates to a polarizing plate which is suitable for application to a polarizing plate, in particular, an integrated structure of a viewing angle expansion film, or a laminate of a phase difference plate and a polarizing plate, which can be combined with a liquid crystal cell. Adhesives, adhesive sheets, and the like which can be easily peeled off even when the film is placed in a high-temperature and high-humidity environment, and have excellent characteristics such as light leakage and the like. An optical film of an adhesive. [Prior Art] In the past, in the case where a sheet made of an organic material is adhered to an adherent such as glass, ceramics, or metal by an adhesive, an unfavorable situation such as peeling off of the sheet end and degumming occurs over time. . In order to solve such a situation, it is generally carried out to increase the molecular weight of the components constituting the adhesive, to increase the crosslinking density, and the like, and to use a strong adhesive material which improves the adhesion property. However, the use of a strong adhesive material like this improves the holding force, but under high temperature and high humidity conditions, the adhesive system cannot conform to the shape change caused by the shrinkage or swelling of the sheet composed of the organic material. It has become the main cause of various obstacles. Among the optical members, a polarizing plate is attached to the surface thereof, and a liquid crystal cell of a liquid crystal display device (LCD) is exemplified as a representative example. Hereinafter, description will be made using Fig. 1 . The liquid crystal cell 13 generally has an alignment layer having two transparent electrode substrates forming an alignment layer as an inner side, and is disposed as a predetermined gastric barrier by a spacer, and seals the periphery thereof, and sandwiches the liquid crystal material at the interval. In the above-mentioned 200911939, two transparent electrode substrates each have a structure in which the polarizing plate 11 is disposed through the adhesive 12 . The polarizing plate is generally composed of a polarizing film having a three-layer structure in which an optical orthotropic film such as a triacetyl cellulose (TAC) film or the like is bonded to both surfaces of a polyvinyl alcohol-based polarizer. Further, an adhesive layer whose optical member is attached to a liquid crystal cell or the like is provided on one side thereof. Further, as shown in the second diagram, in order to improve the viewing angle characteristics, the phase difference plate 24 is disposed between the polarizing plate 2 1 and the liquid crystal cell 2 through the adhesives 2 2 and 2 5 . The situation. When the polarizing plate configured as described above is attached to an optical member such as a liquid crystal cell or a case where a polarizing plate and a phase difference plate are attached, it is a multilayer structure of different kinds of materials, and lacks dimensional stability due to material properties. In particular, the dimensional change caused by shrinkage or swelling in a high-temperature and high-humidity environment becomes large. Since the polarizing plate generally uses the above-mentioned strong adhesive as an adhesive, although the size of the polarizing plate can be suppressed, the degumming or peeling can be suppressed, but the polarizing plate cannot be absorbed by the adhesive layer as the size of the polarizing plate changes. The stress, while the residual stress in the polarizing plate becomes uneven. As a result, it has been found that so-called "light leakage" easily occurs in the TN liquid crystal cell, and the problem of "color unevenness" easily occurs in the S T N liquid crystal. In order to solve such a problem, for example, a technique in which a low molecular weight body such as a plasticizer is added to an adhesive to moderately soften it to impart stress relaxation property has been disclosed (for example, see Patent Document 1). However, the addition of the low molecular weight body causes contamination of the liquid crystal cell when the polarizing plate is peeled off, and the holding force is lowered, and the degumming or peeling system becomes easy to occur with time. 200911939 On the other hand, 'disclosed is a tablet having a weight ratio of 100:1 to 100: an acrylic copolymer in a ratio and an acrylic polymer having a radiation in a side chain. 'Refer to Patent Document 2). In this publication, it is described that the operation as a polarizing plate is not described in terms of light leakage and the size of the evaluation, even in any of the examples. The inventors of the present invention were unable to satisfy the results of the light leakage property of the pressure-sensitive adhesive described in the examples used at a value of 15 Å. In this way, it is difficult to prevent adhesion durability in the adhesive for polarizing plates. Therefore, it is difficult to achieve durability due to demanding durability due to in-vehicle use, etc. It is more difficult to coexist with light leakage prevention. In the manufacturing process of a liquid crystal display or the like, when an optical member such as a liquid crystal cell is bonded to the bonding member, the polarizing plate is used after a certain period of time from the bonding. It is necessary to reuse high-priced liquid crystal cells. Therefore, after the adhesive attached to the polarizing plate is bonded, it can be peeled off from the liquid crystal cell, for example, even after a long period of time or more. In this way, even after a long period of time, the adhesive can be easily peeled off. It is desirable to solve the problem of coexisting with the property of imparting the adhesive durability to the adhesive end. [Patent Document 1] Patent No. 327292 No. 1 [Patent Document 2] Special Opening 2 0 CM - 1 0 7 0 〇5 Bulletin 1 00 symmetry basic sensation bonding example, but the price sample of this bulletin light board evaluation and light leakage problem. In the shape, the light plate and the deviation are peeled off and the strong adhesion is applied through the coating for 1 week. In the case of a forced image, the object of the present invention is to provide a polarizing plate or a polarizing plate which is suitably applied to, for example, a polarizing plate, in particular, an integrated viewing angle expansion film or the like. In the case where the plate and the phase difference plate are laminated, the polarizing plate can be adhered to the liquid crystal cell with good durability, and the obtained liquid crystal display device has characteristics of being difficult to generate light leakage and the like even in a high-temperature and high-humidity environment. After a period of time, an adhesive which can be easily peeled off from the liquid crystal cell (hereinafter referred to as "re-peeling"), an adhesive sheet using the adhesive, and an optical film with an adhesive using the adhesive. Means for Solving the Problem Generally, as a re-peelable adhesive, there is a very small increase in adhesion from the start of the application, and it is necessary to have excellent durability even with low adhesion. In particular, in the use of a polarizing plate, low adhesion and excellent durability are strongly desired. However, in the actual display configuration, whether or not the low adhesion force can maintain a high durability for a long period of time remains as an uncomfortable material. Therefore, the inventors of the present invention thought that it is necessary to develop a re-peelable adhesive force of about 10 N/25 mm after 14 days of sticking in order to increase the adhesive strength and to reduce the rate of increase. The field, then 'adhesive system for strong adhesive changes is important. Further, in the present invention, the field of adhesion in the predetermined period after the bonding is made, and then the property in the field of strong adhesion is called "reworking". Furthermore, the results of the 200911939 study were repeated with the adhesive having the reworkability, and it was found that the adhesive material containing the two specific acrylic polymers and the active energy ray-curable compound was irradiated with active energy rays. The adhesive formed can be suitable for its purpose. The present invention has been completed based on this knowledge. That is, the present invention provides (1) an adhesive which is an adhesive composed of an active energy ray irradiated to an adhesive material containing the component (A), the component (B) and the component (C), (A) An acrylic copolymer obtained by polymerizing a bulk composition having a weight average molecular weight of 1,000,000 or more, wherein the monomer composition contains a hydroxyl group-containing monomer having a monomer composition ratio of 0.01 to 5% by mass, and the monomer composition ratio is 〇 〇1% by mass or more and less than 2.0% by mass of a carboxyl group-containing monomer, (B) an acrylic copolymer obtained by polymerizing a monomer composition having a weight average molecular weight of 10,000 or more, and the monomer composition contains a monomer having a monomer composition ratio of less than 0.01% by mass, and a carboxyl group-containing monomer having a monomer composition ratio of from 0.01 to 15.0% by mass, and (C) an active energy ray-curable compound, wherein the component ( A) The mass ratio of the component (B) is 1〇〇: 1~1〇〇: 30, and the storage elastic modulus (G') at 23X: is 0.3 MPa or more; (2) as in the above (1) The adhesive described therein, wherein the mass ratio of the component (A) to the component (c) is 100: 1 to 100: 40; (3) The adhesive according to the above aspect (1), wherein the component (A) is an acrylic copolymer having a weight average molecular weight of 1.5 million or more; (4) according to any one of the above items (1) to (3). The adhesive further contains (D) a polyisocyanate compound and (E) a decane coupling agent, and the molar ratio of the hydroxyl group-containing 200911939-based monomer to the component (D) in the component (A) is 〇.8: 1.2 to 12: 0.8, and the mass ratio of the component (A) to the component (E) is 1 〇〇: 〇.; [~; [〇〇: 〇.5; (5) as in any of the above items (1) to (4) The adhesive of the present invention, wherein the storage elastic modulus (G') at 23 ° C is 0.3 to 15 MPa; (6) The adhesive according to any one of the above items (1) to (5), wherein at 80 ° The storage elastic modulus (G') of C is 〇. 1 to 15 MPa; (7) an adhesive sheet having the peeling layer of the release sheet having any one of items (1) to (6). An adhesive material layer composed of an adhesive; (8) an adhesive sheet which is sandwiched by the peeling layer side of the two peeling sheets to hold any one of items (1) to (6) Formed by an adhesive; (9) an optical film with an adhesive An adhesive material layer comprising the adhesive according to any one of (1) to (6), and (10) an adhesive attached thereto as described in (9) above. An optical film, wherein the optical film is a polarizing plate. Advantageous Effects of Invention According to the present invention, it is possible to provide, for example, a polarizing plate which is suitably applied to a polarizing plate, particularly a polarizing plate which is integrated with a viewing angle expansion film, or a laminate of a phase difference plate and a flat light plate, which can be durable with a liquid crystal cell. The liquid crystal display device obtained at the same time has a property of being difficult to generate light leakage even in a high-temperature and high-humidity environment, and has an adhesive for reworkability, an adhesive sheet, an optical film with an adhesive, and an attached film. A polarizing plate with an adhesive. [Embodiment] -11-200911939 BEST MODE FOR CARRYING OUT THE INVENTION The adhesive of the present invention is a combination of a (meth) acrylate (main monomer) containing no functional group, a hydroxyl group-containing monomer, and a carboxyl group-containing monomer. The component (A) of the acrylic copolymer constituting the unit and the (meth) acrylate (main monomer) containing no functional group and the carboxyl group-containing monomer are constituent units, and substantially do not contain a hydroxyl group-containing monomer. The component (B) of the acrylic copolymer constituting the unit is important. By combining with such a combination, it is found that the excellent durability of the bonding can be obtained, while the rate of increase of the adhesive force after bonding can be suppressed, and the adhesiveness in the field of re-peeling can be exhibited while the re-peelability is required. A processable adhesive. More specifically, the adhesive of the present invention is an adhesive composed of an active energy ray irradiated to an adhesive material containing the following components (A), (B) and (C), wherein: (A) monomer composition The acrylic copolymer obtained by polymerizing a weight average molecular weight of 1,000,000 or more, and the monomer composition contains a monomer composition ratio of ο _ 0 1 to 5 by mass. /. The hydroxyl group-containing monomer has a monomer composition ratio of 0. Ο 1% by mass or more and less than 2.0% by mass. /. a carboxyl group-containing monomer, (B) a monomer composition having a weight average molecular weight of 10,000 or more, and a monomer composition ratio of the monomer composition ratio of less than 0 · 0 1 quality. /. The hydroxyl group-containing monomer has a monomer composition ratio of 〇. 1 to 15.0% by mass of a carboxyl group-containing monomer, and (c) an active energy ray-curable compound. The acrylic copolymer of the component (A) is a (meth) acrylate which does not contain a functional group such as methyl (meth) acrylate or butyl methacrylate, and is mainly a monomer of the present invention. And a copolymer of a hydroxyl group-containing monomer and a carboxyl group-containing monomer as a crosslinkable functional group. In the adhesive of the present invention, the acrylic acid-based copolymer of the component (A) is an important component for imparting re-peelability and controlling the change of the adhesive property over time after the application. Further, the term "(meth)acrylate" as used in the present invention means both acrylate and methacrylate. Other similar terms are the same. In the above-mentioned component (A), the (meth) acrylate monomer having no functional group is not particularly limited, and for example, the alkyl group having an ester moiety has a carbon number of 1 to 20 (methyl group). )Acrylate. Here, examples of the (meth) acrylate having 1 to 20 carbon atoms in the alkyl group as the ester moiety include methyl (meth)acrylate, ethyl (meth)acrylate, and (methyl). Propyl acrylate, butyl (meth)acrylate, amyl (meth)acrylate, hexyl (meth)acrylate, cyclohexyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, ( Isooctyl methacrylate, decyl (meth) acrylate, dodecyl (meth) acrylate, myristyl (meth) acrylate, palm decyl (meth) acrylate, hard (meth) acrylate Lipid ester and the like. These may be used singly or in combination of two or more. Among these compounds, in particular, from the point that a (meth) acrylate polymer having a weight average molecular weight of 1,000,000 or more can be easily obtained with a moderate adhesive property, butyl (meth) acrylate is used. good. Specific examples of the hydroxyl group-containing monomer as the component (A) include 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, and 3-hydroxyl (meth)acrylate. (methyl) 200911939 hydroxyalkyl acrylate such as propyl ester, 2-hydroxybutyl (meth)acrylate, 3-hydroxybutyl (meth)acrylate or 4-hydroxybutyl (meth)acrylate, etc. Among them, especially 2-hydroxyethyl (meth)acrylate and 4-hydroxybutyl (meth)acrylate are from the point of easily producing a (meth)acrylic polymer having a weight average molecular weight of 1,000,000 or more. It is better. In the above component (A), the content of the hydroxyl group-containing monomer is in the range of from 0.01 to 5% by mass based on the monomer composition ratio. When the amount is less than 〇1% by mass, the durability at a high temperature is unfavorable. When the amount is more than 5% by mass, the high temperature and the durability under high humidity are insufficient. From the above viewpoints, the content of the hydroxyl group-containing monomer is preferably in the range of from 0. 1 to 4% by mass in the monomer composition ratio, more preferably in the range of from 0.5 to 3% by mass. Specific examples of the carboxyl group-containing monomer in the component (A) include (meth)acrylic acid, crotonic acid, maleic acid, citraconic acid, etc., and a weight average molecular weight of 1,000,000 can be easily produced. From the viewpoint of the above (meth) acrylate copolymer, (meth)acrylic acid is preferred. Further, in the component (A), the content of the carboxyl group-containing monomer is 0.001% by mass or more and less than 2.0% by mass. /. . Below 0 _ 0 1 quality. /. In this case, the adhesion cannot be increased, and even if it exceeds the period required to be peeled off, it is not sufficient adhesion. When the amount is 2.0% by mass or more, the adhesive strength during the period in which re-peeling is required is greatly increased, and the reworkability cannot be exhibited. From the above viewpoints, the content of the carboxyl group-containing monomer is preferably in the range of 0.1 to 1.5% by mass, and preferably 0.2 to 1.0% by mass in the monomer composition ratio. /. The range is better. Further, the acrylic copolymer of the component (A) has a weight average molecular weight of 1,000,000 or more. When the weight average molecular weight is less than 1,000,000, the adhesion to the adherend 200911939 or the adhesion durability under high temperature and high humidity may be insufficient, and degumming or peeling may occur. Based on the above point of view, it is preferable that the weight average molecular weight is 1.2 million or more, and the weight is 1.5 million or more. Further, in consideration of adhesion and adhesion durability, the weight average molecular weight is preferably from 1.2 million to 2.2 million, particularly preferably from 1.5 million to 2,000,000. Further, the molecular weight distribution (Mw/Mn) indicating the ratio of the weight average molecular weight (Mw) to the number average molecular weight (Mn) is preferably 20 or less. When the molecular weight distribution is 20 or less, sufficient adhesive durability cannot be obtained. Further, the weight average molecular weight and the number average molecular weight are polystyrene-converted oxime measured by a gel permeation (G P C ) method. In the adhesive material, the acrylic copolymer of the component (A) may be used alone or in combination of two or more. Next, the acrylic copolymer of the component (B) is a copolymer of a (meth) acrylate having no functional group as a main monomer and a carboxyl group-containing monomer which is mainly a crosslinkable functional group. Specific examples of the (meth) acrylate having no functional group and the monomer having a carboxyl group are the same as those described in the above components (~). The content of the carboxyl group-containing monomer in the component (B) is composed of a monomer. The ratio is 〇. 〇1 〜1 5 · 0 mass% of the range. Below 〇· 〇1 mass. /d, it is insufficient from the point of durability at high temperature, and when it exceeds 5.0 mass%, The high temperature. The durability under high humidity is insufficient. From the above viewpoints, the content of the carboxyl group-containing monomer in the component (B) is preferably in the range of 〇·1 to 8 mass%. In addition to sufficient durability, from the viewpoint of improving the balance of reworkability, the range of 3 to 7 mass is particularly preferable. 200911939 In addition, the component (B) does not substantially contain The hydroxyl group monomer has a monomer composition ratio of less than 0.1% by mass. By setting the content of the hydroxyl group-containing monomer to less than 0.01% by mass, an effect of suppressing an increase in the rapid adhesion to glass can be obtained. From the above viewpoints, it is preferred that the component (B) does not contain a hydroxyl group-containing monomer. The acrylic copolymer of (B) has a weight average molecular weight of 10,000 or more. When the weight average molecular weight is less than 1,000,000, the adhesion to the adherend is the same as that described in the component (A). High-temperature, high-humidity bonding durability is insufficient, and there is a case where degumming or peeling occurs, and the weight average molecular weight is 12,000 to 2.2 million in consideration of adhesion and adhesion durability. It is preferable that it is preferably 1.5 million to 2,000,000. Further, the molecular weight distribution (Mw/Mn) indicating the ratio of the weight average molecular weight (Mw) to the number average molecular weight (?η) is also the same as the composition (Α), When the molecular weight distribution is 20 or less, sufficient adhesive durability can be obtained. Further, in the adhesive material, the acrylic polymer of the component (B) may be used alone or in combination. In the adhesive material of the present invention, the mass ratio (component (A): component (B)) of the component (A) to the component (B) is in the range of 100:1 to 100:30. The mass ratio is less than 1 〇〇: 1. The content of the component (B) is relatively When the amount of the component (A) is less than 1 part by mass, sufficient adhesive durability cannot be obtained, and particularly when durability is required to be severe, the adhesiveness is insufficient. When the ratio exceeds 100:30, that is, when the content of the component (B) is more than 30 parts by mass based on the component (A) 100 parts by mass, sufficient re-peelability cannot be obtained. Based on the above viewpoint, the component (A) ): Ingredient (B) 200911939 is 1 Ο Ο : 5~1 Ο Ο : The range of 2 0 is preferable. The above-mentioned components (Α) and components (Β) are as long as they do not impair the effects of the present invention. It may also contain a copolymerizable component as a constituent component. Specifically, it contains a monomer such as a sulfhydryl group or an amine group as a functional group, and specific examples thereof include (meth) acrylamide, hydrazine-methyl (meth) acrylamide, hydrazine- Acrylamide such as hydroxymethyl (meth) acrylamide; monomethylaminoethyl (meth) acrylate, monoethylaminoethyl (meth) acrylate, monomethyl (meth) acrylate A monoalkylaminoalkyl (meth)acrylate such as a propyl propyl ester or a monoethyl propyl methacrylate. These single systems may be used singly or in combination of two or more. In the adhesive material of the present invention, as the active energy ray-curable compound used in the component (C), various polyfunctional (meth) acrylate monomers having a bifunctional to hexafunctional function can be used, and in particular, A polyfunctional (meth) acrylate monomer having a molecular weight lower than i 为 is preferred. Examples of the polyfunctional (meth)acrylate monomer include anthracene, 4-butanediol di(meth)acrylate, 1>6-hexanediol di(meth)acrylate, and neopentane. Diol di(meth)acrylate, polyglycol di(meth)acrylate, neopentyl glycol adipate di(meth)acrylate, hydroxypivalic acid neopentyl glycol mono(methyl) Acrylate, dicyclopentenyl di(meth) acrylate, caprolactone modified monocyclopentanyl di(meth) acrylate, ethylene oxide modified di(methyl) propyl citrate Vinegar, di(meth)acryloxyethyl isocylate, cyclized cyclohexyl di(meth)acrylate, tricyclodecane dimethanol (methyl) propylene vinegar, two Methyl dicyclopentane di(meth) acrylate, epoxy b modified hexahydrophthalic acid di(meth) acrylate, tricyclodecane dimethanol 200911939 (meth) acrylate, neopentyl Alcohol-modified trimethylolpropane di(methyl) acrylate, adamantane di(meth) acrylate, etc.; bifunctional; trimethylolpropane tris(methyl) Acrylate, dipentaerythritol tri(meth)acrylate, propionic acid modified dipentaerythritol tri(meth)acrylate, pentaerythritol tri(meth)acrylate, propylene oxide modified trimethylolpropane tris(methyl) a trifunctional type such as acrylate or tris(meth)acryloxyethyl isomeric cyanurate: 4 such as diglycerin tetra(meth)acrylate or pentaerythritol tetra(meth)acrylate Functional type; 5-functional type such as propionic acid modified dipentaerythritol penta (meth) acrylate; 6 functional groups such as dipentaerythritol hexa(meth) acrylate and caprolactone modified dipentaerythritol hexa(meth) acrylate Type and so on. In the present invention, these polyfunctional (meth) acrylate-based single-systems may be used alone or in combination of two or more. Among them, it is preferable to have a ring structure in the skeleton structure. By. The annular structure may be a carbon ring structure, a heterocyclic structure, or a single ring structure or a polycyclic structure. As such a polyfunctional (meth) acrylate monomer, for example, di(meth) propylene oxiranyl ethyl isopolycyanate, tris(meth) propylene oxiranyl ethyl An isomeric cyanurate structure such as a cyanurate or the like, dimethylol dicyclopentane di(meth)acrylate, ethylene oxide modified hexahydrophthalic acid di(meth)acrylic acid Ester, tricyclodecane dimethanol (meth) acrylate, neopentyl glycol modified trimethylolpropane di (meth) acrylate, adamantane di (meth) acrylate, etc. are suitable, especially It is preferred to have an isomeric cyanate structure. Further, as the component (C), an active energy ray-curable acrylate-based oligomer can be used. The acrylate-based oligomer preferably has a weight average molecular weight of -18 - 200911939 50,000 or less. Examples of the acrylate-based oligomers include polyester acrylate type, epoxy acrylate type, urethane acrylate type, polyester acrylate type, and polybutadiene acrylate. System, polyoxy acrylate system, and the like. Here, as the polyester acrylate-based oligomer, a polyester oligomer having a hydroxyl group at both terminals obtained by esterification of a polyvalent carboxylic acid with a polyhydric alcohol by (meth)acrylic acid can be used, for example. It can be obtained by esterifying a hydroxyl group with a hydroxyl group at the terminal of the oligomer obtained by adding a polyvalent carboxylic acid to an alkylene oxide by (meth)acrylic acid. The epoxy acrylate-based oligomer can be esterified with (meth)acrylic acid by reacting with an oxirane ring of a relatively low molecular weight bisphenol epoxy resin or a novolac epoxy resin. available. Further, as the epoxy acrylate-based oligomer, a carboxy-modified epoxy acrylate oligomer partially modified with a dicarboxylic acid anhydride may be used. The urethane acrylate oligomer can be obtained by esterifying, for example, a polyether polyol, a polyester polyol, and a polyisocyanate obtained by reacting a polyisocyanate with (meth)acrylic acid. The polyol acrylate oligomer can be obtained by esterifying a hydroxyl group of a polyether polyol with (meth)acrylic acid. The weight average molecular weight of the acrylate-based oligomer is preferably 50,000 or less, more preferably 500 to 50,000, and more preferably selected from the above, in terms of standard polymethyl methacrylate measured by the GPC method. In the range of 3,000 to 40000. These acrylate-based oligomers may be used alone or in combination of two or more. In the present invention, the component (C) may be used as an adduct acrylate-based polymer having a (methyl)-propyl 200911939 olefin group-based group introduced into the side chain. As the acrylate-based polymer, for example, the above-mentioned component (A) or the (meth) acrylate described in the above, and a copolymer having a functional group in the molecule can be used, and by using the copolymer A part of the functional group is obtained by a compound reaction of a (meth) acrylonitrile group and a group reactive with the functional group. The weight of the adduct acrylate-based polymer is usually from 500,000 to 2,000,000 in terms of polystyrene. In the present invention, the component (C) may be appropriately selected from the above-mentioned polyfunctional acrylate, acrylate-based oligomer, and adduct acrylate-based polymer, or two or more kinds thereof may be used. In the present invention, the active energy ray-curable type of the component (C) is proportional to the acrylic polymer of the component (A), and the mass ratio of the adhesive performance surface (component (A): In the other 100: 1~1〇〇: 40 is preferable. Within this range, the storage elastic modulus of the adhesive can be controlled after the active energy ray irradiation of the component (A) and the component (B) is not hindered. It is advantageous in terms of the range. Based on the above, the component (C) is preferably in the range of 1 〇〇: 5 〜 1 〇〇: 30. In the adhesive material of the present invention, it may be required The photoinitiator is contained, and examples of the photopolymerization initiator include benzoin, methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin ether, and benzoin Butyl ether, acetophenone, dimethylaminophenylidene-2-phenylacetophenone, 2,2-diethoxy-2-phenylbenzene-2-hydroxy-2-methyl - l_Phenylpropan-1-one, 1-hydroxycyclohexylbenzene adduct component (B) base, and the homopolymeric system of the article, the content of the product, (C) In the characteristics And optimum (A): polymerization to benzoin n-butyl I ' 2,2-acetamidine, j ketone, 2 - -20- 200911939 methyl-l-[4-(methylthio)phenyl] -2 - tertyl-propan-1-one, 4-(2-propenylethoxy)phenyl-2-(hydroxy-2-propyl) ketone, benzophenone, p-phenyldiphenyl Methyl ketone, 4,4'-diethylaminobenzophenone, dichlorobenzophenone, 2-methylindole, 2-ethylanthracene, 2-tert-butylindole, 2- Aminoguanidine, 2-methylthioxanthone, 2-ethylthioxanthone, 2-chlorothioxanthone, 2,4-dimethylthioxanthone, 2,4-diethylthioxanthone, Benzyl dimethyl ketal, acetophenone dimethyl ketal, p-dimethylamino benzoate, oligo[2-hydroxy-2-methyl-l-[4-(l-methylethylene) Phenyl]acetone], 2,4,6-trimethylbenzylidene-diphenyl-phosphine oxide, and the like. These may be used singly or in combination of two or more kinds, and the blending amount thereof is selected from the range of from 0 to 2 parts by mass based on 100 parts by mass of the above component (C). In the adhesive material of the present invention, a crosslinking agent may be contained as needed. The cross-linking agent is not particularly limited, and any one of conventional acrylic adhesives conventionally used as a cross-linking agent can be appropriately selected and used. Examples of the crosslinking agent include polyisocyanate compounds, epoxy resins, melamine resins, urea resins, dialdehydes, methylol polymers, K cyclopropane compounds, metal chelate compounds, and metal alcohols. A salt, a metal salt or the like is preferably a polyisocyanate compound (ingredient (D)). Here, 'the polyisocyanate compound (D) may, for example, be an aromatic polyisocyanate such as toluene diisocyanate S*酉曰, phenyl phenyl diisocyanate or benzodimethyl diisocyanate, or hexamethylene diene. Aliphatic polyisocyanate such as isocyanate, alicyclic polyisocyanate such as isophorone diisocyanate or hydrogenated diphenylmethane diisocyanate, and the same biuret and isomeric cyanide Ss·ester And a reactant adduct of a compound containing a low molecular weight active hydrogen such as ethyl alcohol, propylene glycol, neopentyl glycol, trimethyl methacrylate-21-200911939 alkane or castor oil. Among these, for example, an isocyanate-based crosslinking agent is preferred from the viewpoint of improving the adhesion of a triacetyl cellulose (TAC) film to be used as a surface material of a polarizing plate. In the present invention, the above-mentioned crosslinking agent may be used alone or in combination of two or more. In addition, the amount of the crosslinking agent is usually from 0. 01 to 20 parts by mass, preferably from 0.1 to 10 parts by mass, per 100 parts by mass of the acrylic polymer of the component (A). Further, in the case of using the (D) polyisocyanate compound, the hydroxyl group-containing monomer in the above component (Α) is preferably in the range of 0.8: 1.2 to 1.2: 0.8 in comparison with the molybdenum of the (D) polyisocyanate compound. In the range of the molar ratio, it is preferable that the characteristics of the component (Α) and the component (Β) are not hindered, and the storage elastic modulus of the adhesive after the active energy ray irradiation can be controlled to the most suitable range. . In the adhesive material of the present invention, a decane coupling agent as a component (Ε) may be contained as needed. By including the decane coupling agent, when an optical film such as a polarizing plate is bonded to a liquid crystal cell or the like, for example, the adhesion between the adhesive and the liquid crystal cell can be further improved. The oxirane coupling agent is preferably an organic ruthenium compound having at least one alkoxyalkyl group in the molecule and having no compatibility with the adhesive component, and having light transparency, for example, substantially transparent. The amount of the decane coupling agent added in this manner is preferably in the range of 100: 0·1 to 100: 0.5 by mass ratio of the component (A) to the (E) decane coupling agent. In the range of the molar ratio, it is preferable from the point of the adhesion of the alkali-free glass of the liquid crystal cell, -22 - 200911939, and the re-peelability. Specific examples of the above-described decane coupling agent include a polymerizable unsaturated group such as vinyltrimethoxydecane, vinyltriethoxydecane or methacryloxypropyltrimethoxydecane. a compound having an epoxy structure such as a compound; 3_glycidoxypropyltrimethoxydecane' 2-(3,4-epoxycyclohexyl)ethyltrimethoxydecane; 3-aminopropyl Trimethoxydecane, N-(2-aminoethyl)-3-aminopropyltrimethoxydecane, N-(2-aminoethyl)-3-aminopropylmethyldimethoxy An amine group-containing oxime compound such as decane; 3-chloropropyltrimethoxydecane or the like. These may be used alone or in combination of two or more. The adhesive of the present invention is formed by irradiating an active energy ray to the above-mentioned adhesive material thus obtained. Examples of the active energy ray include ultraviolet rays, electron beams, and the like. The ultraviolet ray may be obtained by a high pressure mercury lamp, an electrodeless lamp, a xenon lamp or the like. On the other hand, the electron beam system may be obtained by an electron beam accelerator or the like. Among the active ray rays, ultraviolet rays are particularly suitable. Further, in the case of using an electron beam, an adhesive can be formed without adding a photopolymerization initiator. The irradiation amount of the active energy ray for the adhesive material is suitably selected in such a manner that a suitable storage elastic modulus 'crosslinking adhesive having an adhesion to an alkali-free glass can be obtained, but in the ultraviolet ray. In the case where the illuminance is 50 to 1000 mW/cm 2 and the amount of light is 50 to 1 〇〇〇 mJ/cm 2 'the electron beam is preferably in the range of 10 to 1 〇〇〇 krad. The adhesive of the present invention must have a storage elastic modulus (G ') of 2 3 t or more of 0.3 Μ P a or more. If the storage elastic modulus (g ') is 0 · 3 Μ Pa or more, -23 - 200911939 can be obtained to achieve sufficient light leakage prevention. About 2 in 3. The upper limit of the storage elastic modulus (G) is not particularly limited, but is preferably 50 MPa or less, more preferably 15 MPa or less, in order to obtain an adhesive having better adhesion durability. The storage elastic modulus (G,) of the system at 23 °C is 0.35 to 12 MPa. The storage elastic modulus (G,) at 80 ° C is generally 0. IMPa is better, better system 〇_1 ～15 MPa, particularly preferably 0.3 to 10 MPa. Further, the storage elastic modulus (G ') is measured by the following method. <Measurement method of storage elastic modulus (G ')> Storage of elastic modulus (G ') is an adhesive having a thickness of 3 0 # m to prepare a cylindrical test piece of 8 mm φ X 3 mm thick, and The torque shearing method was carried out under the following conditions. Measuring device: viscoelasticity measuring device for braking by Rheometric Company "DYNAMIC ANALYZER RDAII" Frequency: 1 Hz Temperature · - 2 3. . , 8 ◦. . Further, the adhesive of the present invention can suppress the adhesion to the alkali-free glass to ION/25 mm 14 days after the bonding. Therefore, even after 14 days from the start of the bonding, the liquid crystal cell is not damaged and can be peeled off again. Further, the lower limit 该 of the adhesive force is generally preferably 0 2 N / 2 5 m m or more. If the adhesive force is 0.2 N / 2 5 m or more, the polarizing plate can be adhered to the liquid crystal cell with sufficient adhesion. Further, the above adhesive force was measured by the following method. <Adhesion to alkali-free glass> -24 - 200911939 A sample of 25 mm width and 100 mm length was cut out from a polarizing plate with an adhesive, and the release film was peeled off (the thickness of the adhesive layer was 2 5 // m), after being attached to an alkali-free glass ("1737" manufactured by CORNING Co., Ltd.), it was pressurized in an autoclave made by Kurihara Seisakusho Co., Ltd. under the conditions of 〇·5 Μ P a, 50 ° C, and 20 minutes. Subsequently, after standing for 14 days in an environment of 2 3 ° C and 50% R Η, a tensile tester ("TENSILON" manufactured by ORIENTIC Co., Ltd.) was used, and the peeling speed was 300 mm / min, and the peeling angle was 1 800. The condition of ° determines the adhesion. The adhesive of the present invention preferably has a gel fraction of 85 % or more. That is, in the case where the amount of the low molecular weight component of the organic solvent extraction is small, degumming or peeling occurs in an environment under heating or warming, there is little contamination to the adherend, and the gel fraction is 85% or more. The material is high in durability or stability. The gel fraction is more preferably from 90 to 99.9%. In the adhesive of the present invention, various additives generally used in the acrylic adhesive may be added as needed within the range which does not impair the object of the present invention, for example, an adhesion-imparting agent, an antioxidant, a light stabilizer, and a softener may be added. , sputum, etc. The adhesive of the present invention is suitable for a polarizing plate composed of a polarizing film alone, and the polarizing plate can be, for example, a film bonded to a liquid crystal cell, in particular, a polarizing plate which is suitable for integration of a polarizing film and a viewing angle expansion film. For example, the polarizing plate is preferably bonded to a liquid crystal cell. The polarizing plate which is formed by integrating the polarizing film and the viewing angle expansion film, for example, a polarizing film obtained by laminating a film of triacetyl cellulose (TAC) on both surfaces of a polyvinyl alcohol-based polarizer For example, a single-sided surface is formed by a viewing angle expansion functional layer (viewing angle -25 - 200911939 large film) composed of a coating liquid crystal, or a film is formed by bonding a viewing angle with an adhesive. In this case, the adhesive is provided on the viewing angle expansion function layer or the viewing angle expansion film side. Further, as a polarizing plate, a triacetyl cellulose (TAC) film may be attached to one side of a polyvinyl alcohol-based polarizer, and a cycloolefin film or a polycarbonate film may be bonded to the other surface. Phase difference film. In this case, the adhesive is disposed on the side of the retardation film. Further, even in the case where there is a phase difference plate between the polarizing plate and the liquid crystal cell as shown in Fig. 2, the adhesive of the present invention can be suitably used. In other words, the polarizing plate composed of the polarizing film alone and the phase difference plate are bonded together by the adhesive of the present invention to produce an optical film, and the phase difference plate of the optical film and the liquid crystal cell are bonded by an adhesive. . Here, the adhesive for bonding the phase difference plate and the liquid crystal cell is not particularly limited, and an adhesive used for bonding a general polarizing plate and a liquid crystal cell can be used. Specifically, an acrylic copolymer disclosed in JP-A No. 1 1 - 1 3 1 0 3 3, an adhesive material composed of a crosslinking agent and a decane coupling agent, and the like can be given. Further, the adhesive of the present invention can also be used for the bonding of the polarizing plate to the liquid cell. By using the adhesive of the present invention and the liquid crystal display device manufactured by bonding a polarizing plate to a liquid crystal cell or a phase difference plate as described above, it is difficult to generate light leakage even in a high temperature and high humidity environment, and the polarizing plate and the liquid crystal cell are used. Excellent adhesion durability. The present invention further provides an optical film with an adhesive attached to the optical film, for example, a polarizing plate, having the layer of the above-described adhesive of the present invention. As the polarizing plate as described above, it may be composed of a polarizing film alone -26 - 200911939. However, in the case of the configuration shown in Fig. 1, the polarizing film and the viewing angle expansion film are integrated. good. Further, the thickness of the adhesive layer composed of the above-mentioned adhesive is generally about 5 to 100 #m, preferably 10 to 50/m, and more preferably 10 to 30/m. The method for producing the optical film to which the adhesive is attached is not particularly limited as long as it can provide a layer composed of the adhesive of the present invention on an optical film such as a polarizing plate, but is not particularly limited. The method of the present invention can more efficiently produce a desired optical film with an adhesive attached thereto. In the method of the present invention, after the polarizing plate is bonded to the adhesive material layer provided on the release layer of the release sheet, the adhesive material layer is formed into a layer composed of the adhesive of the present invention having the predetermined characteristics described above. The optical film with an adhesive of the present invention can be obtained by irradiating the active energy ray from the side of the release sheet. The release sheet may be a polyester film such as polyethylene terephthalate, polybutylene terephthalate or polyethylene naphthalate, or a polypropylene or polyethylene. A plastic film such as an olefin film is coated with a release agent such as polyoxymethylene resin, and a release layer is provided. The thickness of the release sheet is not particularly limited, but is generally about 20 to 1 500 // m. Further, the irradiation conditions of the adhesive material and the active energy ray are as described in the above-mentioned adhesive of the present invention. As a method of providing an adhesive material layer on the release sheet, it is possible to apply a preferred solvent by using, for example, a bar coating method, a doctor blade method, a roll coating method, a blade coating method, a die coating method, a gravure coating method, or the like. Adhesive material -27 - 200911939 The method of forming and drying the coating film. The drying conditions are not particularly limited, but are generally from 50 to 150 ° C for about 10 seconds to 10 minutes. Further, the solvent to be used is not particularly limited, and examples thereof include toluene, ethyl acetate, and methyl ethyl ketone. Further, in the case of the configuration shown in Fig. 1, the polarizing plate is often composed of a polarizing film alone, and the thickness of the adhesive layer composed of the adhesive is the same as described above. The method for producing an adhesive-attached polarizing plate having the configuration shown in Fig. 1 may be a method in which an adhesive layer composed of the adhesive of the present invention is provided on a polarizing plate in the same manner as described above. There are no special restrictions. According to the above production method of the present invention, the production can be performed more efficiently. In the case of the configuration shown in Fig. 2, the adhesive sheet formed by sandwiching the adhesive may be prepared in advance so that the peeling layer sides of the two release sheets are connected to each other, and the adhesive sheet is used to adhere the polarizing plate. And the phase difference plate. Here, the active energy ray system may irradiate two peeling sheets after the adhesive material is sandwiched, or may provide an adhesive material layer on the other peeling sheet, and after the active energy ray is irradiated, other peeling sheets may be used. Hold the clamp. Further, the irradiation conditions of the active energy ray are selected so as to have a layer composed of the adhesive of the present invention having the above-mentioned predetermined characteristics. In the case where the adhesive sheet is used to produce the optical film of the present invention, the release sheet of the adhesive sheet is peeled off and bonded to the polarizing plate by a usual method. In the present invention, in the case where the peeling force when the release sheet is peeled off from the adhesive sheet is peeled at a speed of 30 m /min, it is preferably 1 〇 〇 m N / -28 - 200911939 25 mm or less. When the peeling force is 100 mN/25 mm or less, peeling electrification is hard to occur, and the human stomach is not wound when the polarizing plate of the present invention is produced. Especially for applications such as large TVs, it is effective. Further, in addition to the polarizing plate, an optical film having the additive of the present invention may be applied, and a protective film g of a display surface such as a retardation film and a plasma display panel or a liquid crystal display panel may be used. , but not limited to this. EXAMPLES Next, the present invention will be described in more detail based on examples, but the present invention is not limited to such examples. Further, the properties of the adhesives obtained in Examples 1 to 7 and Comparative Examples 1 to 6 and the properties of the polarizing plate with an adhesive were obtained in accordance with the following. (1) Storage elastic modulus of the adhesive The storage elastic modulus at 2 3 eC and 80 °C was measured according to the method described in the specification. (2) Adhesion (adhesion to alkali-free glass) The adhesion to the alkali-free glass was measured according to the method described in the specification. The adhesion was measured in an autoclave and pressurized at 0 _ 5 Μ P a, 50 ton, 20 minutes, and then placed in a 2 3 ° C, 5 Ο % R Η environment for 1 day. 14 days, and 21 days later. (3) Gel fraction The amount of the adhesive composition (initial mass) composed of the components (A) to (Ε) of each of the examples and the comparative examples was weighed and put into ethyl acetate, and used -29-200911939 After the Soxhlet extraction device was refluxed for more than 16 hours, only the insoluble fraction was extracted. After the solvent contained in the insoluble fraction was removed by drying, the amount of the gel was fractionated (insoluble mass) and the gel fraction was determined according to the following formula. Gel fraction (%) = (insoluble mass / initial mass) χΐ 00 (4) The durability of the polarizing plate with an adhesive is determined by a cutting device (Super Cutter 600 600 600, manufactured by Takino Seiki Co., Ltd.) After the polarizing plate with the adhesive was adjusted to a size of 233 mm x 309 mm, it was bonded to an alkali-free glass ["1 73 7" manufactured by CORNING Co., Ltd.] and then placed in an autoclave made by Kurihara Seisakusho Co., Ltd. at MPa5 MPa, 50 °C. , 20 hours of pressure. Then, the mixture was placed in an environment of the following durability conditions, and after 20 hours, observation was performed using a magnifying glass of 10, and the durability was evaluated by the following criteria. A : In the four sides, there is no defect from the outer peripheral end 〇 · 3 m m or more. B : In the four sides, there is no defect from the outer peripheral end 〇 · 6 m m or more. C: From the outer peripheral end of any of the four sides, there is a debonding or peeling of 6 m m or more. The foaming, streaking, etc. are lower than 〇. The appearance of the adhesive of 1 m m is an abnormal defect. D: In any one of the four sides, the outer peripheral end portion is 〇. 6 m m or more has debonding, peeling, foaming, streaking, etc. The appearance of the adhesive of 1 m m or more is abnormal. < Durability conditions> 80 ° C dry environment, 90. (: dry environment, 60 °C. Relative humidity 90% environment -20 °C (2) 60 °C for 30 minutes thermal shock test, 200 cycles -30- 200911939 (5) Light leakage performance by cutting device (Wilder "Super Cutter" manufactured by Seiki Co., Ltd.: 1-600") 'The polarizer with the adhesive is adjusted to a size of 233 mm x 309 mm, and then it is bonded to an alkali-free glass [1737" manufactured by CORNING Co., Ltd.] In the autoclave, it is pressurized at a temperature of M5 Mpa, 50 ° C, and 20 minutes. In addition, the above-mentioned bonding is in the surface of an alkali-free glass, and the polarization axis of the polarizing plate with an adhesive is crossed. The state of the Cole state was carried out. After leaving it in a dry environment at 80 ° C for 200 hours, the light leakage was evaluated according to the method shown below. Using the MCPD-2000 manufactured by Otsuka Electronics Co., Ltd., the third figure was measured. The luminance 'luminance difference Δ L * in each of the fields shown is obtained by the following equation and becomes light leakage. Δ L* = [(b + c + d + e}/4] — a
(但是，a、b、c、d及e係各自在A領域、B領域、C 領域、D領域及E領域的預定測定點（各領域的中央部位之 1處）中的亮度）。顯示△ L *之値越小，則漏光越少，一般 只要低於4.0，即可使用做爲液晶顯示裝置用。 實施例1〜7及比較例1〜6 使用表1所示之單體組成（固體成分換算），以調製具 有表1所示物性的丙烯酸系共聚物（成分（A))及丙烯酸系共 聚物（成分（B))。於其中以表1記載之摻混量摻混多官能丙 烯酸酯系單體（成分（C))、光聚合起始劑、聚異氰酸酯化合 物（成分（D))、矽烷偶合劑（成分（E))，然後加入甲苯做爲溶 劑以得到固體成分2 0質量％的塗敷液。使用該塗敷液，以 200911939 乾燥後的厚度爲25 μ m的方式，利用刮刀式塗敷 做爲剝離薄膜之厚度 38^m的聚對苯二甲酸乙 離薄膜[琳得科公司製「SP-PET3811」】之剝離層上 9 〇 °C乾燥處理1分鐘以形成黏著性材料層。 接著，由附有碟狀液晶層（視野角擴大機能$ 薄膜所構成之偏光板，係以黏著性材料層與碟狀 相接的方式貼合在一起。從貼合開始1小時後， 膜側以下述之條件照射紫外線（UV)，以製作附有 偏光板。 <uv照射條件> •使用F U S I Ο N公司製無電極燈 Η燈泡 •照度 600mW/cm2、光量 150mJ/cm2(However, a, b, c, d, and e are each a predetermined measurement point (one at a central portion of each field) in the A field, the B field, the C field, the D field, and the E field). The smaller the Δ L * is, the smaller the light leakage is. Generally, as long as it is lower than 4.0, it can be used as a liquid crystal display device. Examples 1 to 7 and Comparative Examples 1 to 6 The monomer composition (solid content conversion) shown in Table 1 was used to prepare an acrylic copolymer (ingredient (A)) having the physical properties shown in Table 1, and an acrylic copolymer. (ingredient (B)). A polyfunctional acrylate monomer (component (C)), a photopolymerization initiator, a polyisocyanate compound (component (D)), and a decane coupling agent (ingredient (E) were blended in the blending amounts described in Table 1. Then, toluene was added as a solvent to obtain a coating liquid having a solid content of 20% by mass. Using the coating liquid, a thickness of 38 μm after drying in 200911939 was used as a polyethylene terephthalate film having a thickness of 38 μm by a doctor blade coating method [" Linde Co., Ltd." -PET3811"] The release layer was dried at 9 ° C for 1 minute to form an adhesive layer. Then, a polarizing plate having a disk-shaped liquid crystal layer (a viewing angle enlargement function film) is bonded to the disk in a state in which the adhesive material layer is in contact with the disk. One hour after the bonding, the film side Ultraviolet (UV) was irradiated under the following conditions to produce a polarizing plate. <UV irradiation conditions> • FUSI Ο N company-made electrodeless lamp • bulb • Illuminance 600 mW/cm 2 , light amount 150 mJ/cm 2
UV照度·光量計係使用 EYE GRAPHICS ϋ V P F _ 3 ό」。#著齊!J的性肯巨及附有家占著劑之偏光板 評價結果係表示於表2 ° 機塗布至 二酯製剝 之後，於 i )之偏光 液晶層爲 從剝離薄 黏著劑之 公司製「 的性能之 -32- 200911939 (E)矽烷 偶合劑*8 [質量份） <Ν d Οί d CSj d CN d CN d CN d CN d 6 csi d d cs d csi d CM 6 (D)聚異氰 酸酯化合 物*7 價量份） 寸 寸 寸 寸 00 寸 寸 寸 寸 寸 寸 寸 Si φ. S s S ^ ^ Λ LO r-t (Μ (Μ LO r*H l〇 rH LO »—H CN LO rH LO r^H in r-H 1 LO r-H l〇 rH (C)多官能丙烯酸系 單體 摻混量 價量份) LO LO LO LO 〇 CN LO l〇 rH LO I in LO 黩 limit P M-315*4| Μ-315 Μ-315 M-315 M-315 R-684*5 M-315 M-315 M-315 M-315 1 M-315 M-315 丙烯酸系共聚物(Β) 摻混量 _ LO ο o O o o o o o i o 分子量 分布 1 V 3.06 | 3.06 3.06 3.06 3.06 3.06 3.12 3.06 3.06 3.06 1 3.06 i 3.36 重量平均 7曰 力于里 -1 (Mw) I o 00 »—1 ο 00 »-Η ο 00 1-H o 00 1-H O 00 rH o 00 O o 00 rH o 00 r-H o 00 t-H o 00 t-H 1 O 00 T-H 單體組成 CO * LO L0 LO in LO LO o LO l〇 m m 1 o CS] * in 1C LO in LO in 〇> o l〇 l〇 a 1/) a LO 1 o 00 丙烯酸系共聚物(Α) 摻混量 _ o o T—( ο ο o o o o 〇 o rH o o r—H o o r~H 〇 o i-H o o r-H o o r-H o o i-H o o o o 分子量 分布 1 V 2 3.24 3.24 3.24 3.35 3.42 3.24 3.24 3.24 3.44 3.55 3.24 3.24 3.24 重量平均 分子量 (Mw) o ON 〇 〇\ t-H 〇 r-H o o (N o 00 T-H o 〇\ r*H o σ» r—4 o 1-S o LO 〇 CN i-H 〇 ON 1-H o »—H o rH 單體組成 CO * LO 6 10 ό l〇 d t-H in 6 LO d LO 6 in 6 CO in d LO d l〇 d LO 6 HEA*2 LO i-H L0 «-Η LC t-H CO LO f-H LO i-H l〇 i-H in LO i—H LO uo 00 σ» 00 00 〇\ 97.5 96.5 00 00 00 95.5 93.5 00 00 00 實施例1 實施例2 實施例3 實施例4 實施例5 實施例6 實施例7 比較例1 比較例2 比較例3 比較例4 比較例5 比較例6 200911939 * 1 BA ;丙烯酸丁酯 *2 HEA;丙嫌酸2_經基乙醋 *3 AA ;丙稀酸 *4 M-315;三（丙烯醯氧基乙基}異三聚氣酸旨旨' & = 423、3官能型（東亞合成公司製，商品名「AR〇NIX M-3 1 5」） *5 R-684 ;三環癸烷二甲醇丙烯酸酯（日本化藥公司製 「KAYARAD R-684」，分子量=336) * 6 光聚合起始劑；二苯甲酮與1-羥基環己基苯基酮的 質量比1 : 1之混合物、汽巴特殊化學品公司製「 Irgacure 500」 * 7 聚異氰酸酯化合物；（交聯劑、密合性改良劑）：三羥 甲基丙烷改質甲苯二異氰酸酯（日本聚胺甲酸酯公司 製「CORONATE L」） * 8 矽烷偶合劑：3-環氧丙氧基丙基三甲氧基矽烷（信越 化學工業公司製「KBM-403」） -34 - 200911939 οί漱 附有黏著劑之偏光板的性能 漏光性能 0.88 0.83 0.73 0.87 1.25 1.79 1.29 1.08 0.97 1.58 4.26 1.34 1.23 耐久性 熱震盪 < < < < OQ m m DQ Q Q Q OQ 60〇C90%RH < < < < < m < OQ m ϋ Ο Q < 90°Cdry < < < < < < < m ω ϋ ϋ o < 80°Cdry < < < < < < < < < m m m < 黏著劑的性能 凝膠分率(％) VO \〇 O' 00 00 vD O' 00 σ» 00 00 00 LO 黏著力(N/25mm) 21天 寸 10 2 v£) CS 00 CN CO CO L〇 ο CO CM ΙΟ CO 14天 u〇 IS ON ts UO L〇 寸 00 CO rH o CM H< r—1 CO 寸 CO 寸 (M (M 寸 ΙΟ CO LC 儲存彈性模數(MPa) 80°C 0.51 0.52 0.57 0.38 0.41 0.40 0.50 0.62 0.48 0.51 0.09 0.42 0.50 23〇C 1.21 1.56 1.75 1.09 1.11 0.99 1.38 1.81 1.22 1.34 0.21 1.12 1.33 實施例1 實施例2 實施例3 實施例4 實施例5 實施例6 實施例7 比較例1 比較例2 比較例3 比較例4 比較例5 比較例6 200911939 產業上的利用可能性 本發明的黏著劑係適合適用於例如偏光板、特別是與 視里T角擴大薄膜等一體化而成之偏光板、或相位差板與偏 光板積層之情形，該偏光板係與液晶胞更有耐久性的黏 合’同時所得到的液晶顯示裝置具有即使在高溫高濕環境 下亦難以生成漏光等的特性。又，由於再加工性優異之故， 即使在貼合位置產生位移之情形等、從貼合開始的固定期 間可再度剝離而正確地貼合之情形中，經過固定期間，能 充分地貼合液晶胞。因此，可再利用高價的液晶胞。 【圖式簡單説明】 第1圖係表示LCD構成之槪略圖。 第2圖係表示LCD構成之槪略圖。 第3圖係表示評價於實施例、比較例所得到附有黏著 劑之偏光板的漏光性之方法的説明圖。 【主要元件符號説明】 1，2 液晶顯示裝置 11 ' 21 偏光板 12，22，25 黏著劑 13，23 玻璃（液晶胞） 24 相位差板The UV illuminance/light meter uses EYE GRAPHICS ϋ V P F _ 3 ό". #着齐! J's sexuality and the evaluation results of the polarizing plate with the household agent are shown in Table 2 ° machine coating to diester stripping, the polarizing liquid crystal layer in i) is from the peeling thin adhesive Company-made performance -32- 200911939 (E) decane coupling agent *8 [parts by mass] <Ν d Οί d CSj d CN d CN d CN d CN d 6 csi dd cs d csi d CM 6 (D) Polyisocyanate compound *7 Price quotation) inch inch inch 00 inch inch inch inch inch inch φ. S s S ^ ^ Λ LO rt (Μ ( r LO r*H l〇rH LO »—H CN LO rH LO r^H in rH 1 LO rH l〇rH (C) polyfunctional acrylic monomer blending valence amount) LO LO LO LO 〇CN LO l〇rH LO I in LO 黩limit P M-315*4| Μ-315 Μ -315 M-315 M-315 R-684*5 M-315 M-315 M-315 M-315 1 M-315 M-315 Acrylic Copolymer (Β) Blend _ LO ο o O oooooio Molecular Weight Distribution 1 V 3.06 | 3.06 3.06 3.06 3.06 3.06 3.12 3.06 3.06 3.06 1 3.06 i 3.36 Weight average 7 于力里里-1 (Mw) I o 00 »—1 ο 00 »-Η ο 00 1-H o 00 1-HO 00 rH o 00 O o 00 rH o 00 rH o 00 tH o 00 tH 1 O 00 TH monomer composition CO * LO L0 LO in LO LO o LO l〇mm 1 o CS] * in 1C LO in LO in 〇> ol〇l〇a 1/) a LO 1 o 00 Acrylic copolymer (Α Mixing amount _ oo T—( ο ο oooo 〇o rH oor—H oor~H 〇o iH oo rH oo rH oo iH oooo Molecular weight distribution 1 V 2 3.24 3.24 3.24 3.35 3.42 3.24 3.24 3.24 3.44 3.55 3.24 3.24 3.24 Weight Average molecular weight (Mw) o ON 〇〇\ tH 〇rH oo (N o 00 TH o 〇\ r*H o σ» r—4 o 1-S o LO 〇CN iH 〇ON 1-H o »—H o rH monomer composition CO * LO 6 10 ό l〇d tH in 6 LO d LO 6 in 6 CO in d LO dl〇d LO 6 HEA*2 LO iH L0 «-Η LC tH CO LO fH LO iH l〇iH In LO i-H LO uo 00 σ» 00 00 〇 \ 97.5 96.5 00 00 00 95.5 93.5 00 00 00 Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 200911939 * 1 BA; butyl acrylate * 2 HEA; acrylic acid 2 - ethyl acetoacetate * 3 AA; acrylic acid * 4 M-315;醯oxyethyl}isotrimeric gas acid ' & = 423, 3-functional type (manufactured by Toagosei Co., Ltd., trade name "AR〇NIX M-3 15") *5 R-684; Tricyclodecane dimethanol acrylate (KAYARAD R-684, manufactured by Nippon Kayaku Co., Ltd.) "Molecular weight = 336) * 6 Photopolymerization initiator; a mixture of benzophenone and 1-hydroxycyclohexyl phenyl ketone in a mass ratio of 1:1, "Igbaure 500" manufactured by Ciba Specialty Chemicals Co., Ltd. * 7 Isocyanate compound; (crosslinking agent, adhesion improver): trimethylolpropane modified toluene diisocyanate ("CORONATE L" manufactured by Nippon Polyurethane Co., Ltd.) * 8 decane coupling agent: 3-epoxy propylene Oxypropyltrimethoxydecane ("KBM-403" manufactured by Shin-Etsu Chemical Co., Ltd.) -34 - 200911939 οί漱 Performance of light-shielding plate with adhesive 0.88 0.83 0.73 0.87 1.25 1.79 1.29 1.08 0.97 1.58 4.26 1.34 1.23 Durable thermal shock <<<<< OQ mm DQ QQQ OQ 60〇C90%RH <<<<< m < OQ m ϋ Ο Q < 90°Cdry <<<<<<< m ω ϋ ϋ o < 80°Cdry <<<<<<<<< mm m < Adhesive properties Gel fraction (%) VO \〇O' 00 00 vD O' 00 σ» 00 00 00 LO Adhesion (N/25mm) 21 days inch 10 2 v£) CS 00 CN CO CO L〇ο CO CM ΙΟ CO 14 days u〇IS ON ts UO L〇 inch 00 CO rH o CM H< r-1 CO inch CO inch (M (M inch ΙΟ CO LC storage elastic modulus (MPa) 80° C 0.51 0.52 0.57 0.38 0.41 0.40 0.50 0.62 0.48 0.51 0.09 0.42 0.50 23〇C 1.21 1.56 1.75 1.09 1.11 0.99 1.38 1.81 1.22 1.34 0.21 1.12 1.33 Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 200911939 Industrial Applicability The adhesive of the present invention is suitably applied to, for example, a polarizing plate, in particular, an integrated T-angle expansion film. In the case where the polarizing plate or the phase difference plate and the polarizing plate are laminated, the polarizing plate is more durablely bonded to the liquid crystal cell, and the obtained liquid crystal display device is difficult to generate even in a high temperature and high humidity environment. Characteristics such as light leakage. In addition, in the case where it is excellent in reworkability, even when the fixing position is changed from the bonding position, and the fixing period from the bonding start can be peeled off again and the film is correctly bonded, the liquid crystal can be sufficiently bonded after the fixing period. Cell. Therefore, high-priced liquid crystal cells can be reused. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic diagram showing the structure of an LCD. Fig. 2 is a schematic diagram showing the structure of the LCD. Fig. 3 is an explanatory view showing a method of evaluating the light leakage property of the polarizing plate with an adhesive obtained in the examples and the comparative examples. [Description of main component symbols] 1,2 Liquid crystal display device 11 ' 21 Polarizing plate 12, 22, 25 Adhesive 13,23 Glass (liquid crystal cell) 24 Phase difference plate