201211171 六、發明說明： 【發明所屬之技術領域】 本發明係關於適合用於具有有機色素紀錄層之光碟之 紫外線硬化型樹脂組成物，以及具有其硬化物層之光碟。 【先前技術】 現在，作為實用化之光碟紀錄媒體，存在（丨）於12匪 之聚碳酸酯基板上積層紀錄層、反射層及紫外線硬化型樹 脂所成之保護層之光碟，例如CD-R或CD-RW，和（2)將0. 6_ 之聚碳酸酯基板與具備紀錄層及反射層之〇. 6mm的聚碳酸 酯基板以紫外線硬化型樹脂貼合之光碟，例如DVD-R、 DVD+R 、 DVD-RW 、 DVD+RW 及 DVD-RAM 。 又，近年販售具有約單層型DVD的5倍紀錄容量之藍 光光碟（BD-R)。藍光光碟係於1. 1mm之透明或不透明塑膠 製基板上形成反射層、紀錄層及界面層，並於界面層上積 層約0· 1mm的光透過層之構造，而經由光透過層紀錄/播放 之圓盤（disc)。紀錄層係使用有機色素和無機化合物，界 面層係使用光透過性之無機物，光透過層係使用紫外線硬 化型樹脂之硬化物層。 在具有以有機色素所成之紀錄層的藍光光碟中，係照 射雷射光於紀錄層，利用有機色素之體積變化所致之變形 而施行紀錄。為了補助色素之體積變化，以得到優異紀錄 信號特性（例如，抖動（jitter)特性），已有提案於界面層 上形成25°C之彈性模數在40MPa以下之光透過層之技術 (專利文獻1)，以及形成25°C之彈性模數在34至96MPa 4 323318 201211171 之光透過層之技術（專利文獻2)。 又，作為前述之光碟紀錄媒體的信賴性之評價指標， 例如’已有提案於溫度8(TC/相對濕度8〇%RH #環境下放 置1〇〇小時’施行觀測言式驗開始時和該放m】、時後之 ‘ 2錄信⑽性之劣化程度之環境試驗。為了使該環境試驗 月，j後的紀錄信號特性之劣化程度在預想範圍内，而在界面 層上形成於5C和55Ϊ之彈性模數皆係1〇〇MPa以下、且5 C之彈性模數和55。(：之彈性模數的比係1〇以下之光透過 層之形成技術（專利文獻3)。 [先行技術文獻] [專利文獻] [專利文獻1]日本特開2008-123631號公報 [專利文獻2]日本特開2008-269703號公報 [專利文獻3]日本特開2009-026379號公報 【發明内容】 (發明欲解決之課題） 專利文獻1至3中已提案’為了補助色素之體積變化， 以得到優異紀錄信號特性（例如，抖動特性），而使儲存模 數於特定值以下。因此，專利文獻1至3中所提案之使用 光透過層用保護塗佈劑而形成之光透過層之物理性強度 弱，而必須設置硬塗層於該光透過層表面。 吾人已瞭解到，將形成有該等光透過層且再於光透過 層表面施行硬塗處理而作成之光碟，施行於高溫多濕環境 下（溫度8(TC/相對濕度85%RH)放置100小時之環境試驗 323318 5 201211171 時，於硬塗層有產生裂縫之情況。光碟的硬塗層產生裂縫 之情況下，不僅紀錄信號特性（例如，抖動特性）降低，亦 變得無法使用作為光紀錄媒體。 提高光透過層之儲存模數係有效於防止環境試驗後之 硬塗層裂縫的產生。然而，因光透過層之儲存模數過高則 會抑制紀錄層之膨脹變形，紀錄標記之形成會變困難。又， 縱使為高儲存模數和紀錄標記之形成並存之樹脂，在進行 塗佈硬化時，若對基板造成之翹曲量大，則有寫入及讀入 時會變得容易產生錯誤之問題。 在此，本發明之目的係提供一種紫外線硬化型樹脂組 成物，其可用於具有有機色素層之光碟，且放置於高溫多 濕下時硬塗層不產生裂縫，可賦予充分《紀錄信號特性， 再者，塗佈硬化時基板的翹曲小。 (解決課題之手段） 本發明們為解決前述課題而重複深入研究之結果，發 現含有多官能（甲基）丙稀酸醋及胺基甲酸乙醋（f基）丙烯 酸酯，且硬化膜於8(rc之儲存模數E，為特定範圍之紫外 線硬化型樹脂組成物，即使將具有經施用硬塗之其硬化物 層之=碟放置於尚溫多濕下，硬塗層亦不產生裂縫可顯 不充分之紀錄信號特性，且塗佈硬化時產生之基板的翹曲 亦小’而達到本發明之完成。 亦即，本發明係關於下述（1)至（13)者。 (1) 一種具有有機色素層之光碟用紫外線硬化型樹脂 、、且成物其係含有⑷多官能（甲基）丙烤酸醋和⑻胺基甲 6 323318 201211171 酸乙酯（甲基）丙稀酸酯及（c)光聚合起始劑之光碟用紫外 線硬化型樹脂組成物，其硬化膜於80°C之儲存模數E，係 於50至200MPa之範圍。 (2) 多官能（曱基）丙烯酸酯（A)之（甲基）丙婦酸基當 | 量係85g/eq.至160g/eq·之上述（1)所記載之具有有機色 素層之光碟用紫外線硬化型樹脂組成物。 (3) 胺基曱酸乙酯（曱基）丙烯酸酯（B)係分子量為4〇〇 至10000之胺基甲酸乙酯（甲基）丙烯酸酯之上述或 所記載之具有有機色素層之光碟用紫外線硬化型樹脂組成 物。 (4) 多官能（甲基）丙烯酸酯（A)係由1，6-己二醇二（甲 基）丙烯酸酯、1，4-丁二醇二（曱基）丙烯酸酯、三丙二醇二 (曱基）丙烯酸酯、二丙二醇二（曱基）丙烯酸酯、三環癸烷 二甲醇二（曱基）丙烯酸酯、新戊二醇二（甲基）丙烯酸酯、 新戊四醇三（甲基）丙烯酸酯、三羥曱基丙烷三（曱基）丙烯 酸酯、EO改質甘油三（甲基）丙烯酸酯、p〇改質甘油三（甲 基）丙烯酸酯、新戊四醇四（甲基）丙烯酸酯所成之群組中選 出之至少一者之上述（1)至（3)中任一項所記載之具有有機 色素層之光碟用紫外線硬化型樹脂組成物。 (5) 胺基曱酸乙酯（曱基）丙烯酸酯（B)係多元醇和多 異氰酸酉曰及含有經基之（曱基）丙締酸醋之反應物，多元醇 係聚酯聚醇及/或聚醚聚醇之上述（1)至（4)中任一項所記 載之具有有機色素層之光碟用紫外線硬化型樹脂組成物。 (6) 樹脂組成物中係以含有多官能（曱基）丙烯酸酯 323318 7 201211171 (A)10至70重量％和胺基甲酸乙酯（甲基）丙烯峻§|(Β)5 至80重量％及光聚合起始劑（C)0. 5至20重量％為特徵之 上述（1)至（5)中任一項所記載之具有有機色素層之光碟用 紫外線硬化型樹脂組成物。 (7)相對於樹脂組成物所含之（曱基）丙烯酸醋的總 量，（A)多官能（甲基）丙烯酸酯和（B)胺基曱酸乙醋（曱基） 丙烯酸酯的總量係90%以上之上述（1)至（6)中任一項所 記載之具有有機色素層之光碟用紫外線硬化型樹脂組成 物。 (8) 多官能（甲基）丙烯酸酯（A)係（甲基）丙烯酸基當 量85g/eq.至160g/eq.之（曱基）丙烯酸酯，胺基曱酸乙酯 (甲基）丙稀酸S旨（B)係聚S旨聚醇或聚越聚醇中至少一者盥 多異氰酸脂反應所得之反應物，與含有羥基之（曱基）丙烯 酸酯反應得到分子量為400至10000之胺基甲酸乙酯（甲基） 丙烯酸酯之上述（1)至（7)中任一項所記載之具有有機色素 層之光碟用紫外線硬化型樹脂组成物。 (9) 胺基曱酸乙酯（甲基）丙烯酸酯（8)係由聚乙二醇、 聚丙二醇及聚四亞甲二醇所成之群組中選出之聚醚聚醇與 異佛酮二異氰酸脂或二異氰酸甲苯酯反應所得之反應物， 與含有經基之（曱基）丙稀酸酯反應得到胺基甲酸乙酯（曱 基）丙烯酸酯之上述（1)至（8)中任一項所記載之具有有機 色素層之光碟用紫外線硬化型樹脂組成物。 (10) 多官能（曱基）丙烯酸酯係由16_己二醇二（甲基） 丙烯酸酯、1，4-丁二醇二（甲基）丙烯酸酯、三丙二醇二（曱 8 323318 201211171 基）丙烯酸酯、二丙二醇二（甲基）丙烯酸酯、三環癸烷二曱 醇二（甲基）丙烯酸酯、新戊二醇二（曱基）丙烯酸酯、新戊 四醇三（曱基）丙烯酸酯、三羥甲基丙烷三（甲基）丙烯酸 酯、E0改質甘油三（甲基）丙烯酸酯、p〇改質甘油三（甲基） •丙烯酸酯及新戊四醇四（曱基）丙烯酸酯所成之群組中選^ 之至少一者之上述（1)至（9)中任一項所記载之具有有機色 素層之光碟用紫外線硬化型樹脂組成物。 (11)多官能（甲基）丙烯酸酯係由丨，6—己二醇二（曱基） 丙烯酸酯、三丙二醇二（甲基）丙烯酸酯、二丙二醇二（曱基） 丙稀酸醋、新戊四醇三（曱基）丙婦酸醋及三㈣基丙烧三 (曱基）丙烯酸酯所成之群組中選出之至少一者之上述（1) 至（9)中 壬項所s己載之具有有機色素層之光碟用紫外線 硬化型樹脂組成物。 > (12)胺基甲酸乙醋（曱基）丙稀酸醋⑻係由聚乙二 醇、聚丙二醇及聚四亞甲二醇所成之群組中選出之聚驗聚 ^與異佛酮二異級脂或二異氰酸f苯較應所得之反應 物’與含有經基之（甲基）丙稀酸醋反應得到胺基甲酸乙酯 稀酸醋’多官能（甲基）丙稀酸醋（A)係（甲基）丙稀 广基田里85g/eq·至i6〇g/eq.之（甲基）丙烯酸酯，環氧基 (尹基）丙烯酸S旨之含量係相對於樹脂組成物之總量，從〇 至未達10重之上述（7)所記載之具有有機色素層之光 碟用紫外線硬化型樹脂組成物。 。（13)光碟用紫外線硬化型樹脂組成物之硬化膜於25 c之儲存模數係在5〇〇幻5〇隨之上述⑴至（12)中任一 9 323318 201211171 項所》己載之具有有機色素層之光碟用紫外線硬化型樹脂組 成物。 (14) 光碟用紫外線硬化型樹脂組成物之硬化膜於80 °C之儲存模數對2 5。〇之儲存模數的比係 0.05至0.20之上 述03)所s己載之具有有機色素層之光碟用紫外線硬化型樹 脂組成物。 (15) 照射活性能量線於上述（1)至（μ)中任一項所記 載之紫外線硬化型樹脂組成物而得到之硬化物。 (16) 塗佈上述（1)至（14)中任一項所記載之紫外線硬 化型樹脂組成物於光碟基板，對其照射活性能量線而得到 之具有硬化物層之具有有機色素紀錄層之光碟。 (發明之效果） 於具有有機色素紀錄層之光碟的光透過層，使用本發 明之具有有機色素層之光碟用紫外線硬化型樹脂組成物 (以下稱為本發明之樹脂組成物），則可得到高溫高濕下長 時間使用時，硬塗層不產生裂縫，具有初期及耐久試驗後 之抖動值皆未達10%之優異紀錄信號特性，塗佈硬化時產 生之勉曲小之光碟。 【實施方式】 本發明之樹脂組成物係含有多官能（曱基）丙烯酸酯 (A)、胺基曱酸乙酯（甲基）丙烯酸酯（B)及光聚合起始劑 (C)。 作為本發明之樹脂組成物所含有之多官能（甲基）丙烯 酸酯（A)，除了前述之胺基曱酸乙酯（曱基）丙烯酸酯（B)及 10 323318 201211171 後述之環氧基（甲基）丙烯酸酯之外，只要為多官能（曱基） 丙烯酸酯，即可無限定地使用。 例如，多官能（曱基）丙烯酸酯之官能基數通常係可使 用2至6者。較佳係2至4官能之（甲基）丙烯酸酯，更佳 係2至3官能（甲基）丙烯酸酯。 作為該較佳多官能（曱基）丙烯酸酯，例如，可例舉1，6-己二醇二（甲基）丙烯酸酿（例如，Cognis Japan股份有限 公司製Photomer-4017)、1,4-丁二醇二（甲基）丙烯酸酯 (例如，日立化成工業股份有限公司製FANCRYLFA-124AS)、 三丙二醇二（曱基）丙烯酸酯（例如，DAICEL-CYTEC股份有 限公司製TPGDA)、二丙二醇二（曱基）丙烯酸酯（例如， Cognis Japan股份有限公司製Photomer-4226)、三環癸烧 二甲醇二（曱基）丙烯酸酯（例如，日本化藥股份有限公司製 KAYARADR-684)、新戊二醇二（曱基）丙烯酸酯（例如，日本 化藥股份有限公司製KAYARADNPGDA)、新戊四醇三（曱基） 丙烯酸酯（例如，日本化藥股份有限公司製KAYARAD PET-30)、三羥甲基丙烷三（甲基）丙烯酸酯（例如，日本化 藥股份有限公司製KAYARADTMPTA)、EO改質甘油三（曱基） 丙烯酸酯（較佳係1至4莫耳E0改質甘油三（曱基）丙烯酸 酯，例如，日本化藥股份有限公司製KAYARAD THE-330)、 P0改質甘油三（曱基）丙烯酸酯（較佳係1至3莫耳P0改質 甘油三（曱基）丙烯酸酯，例如，曰本化藥股份有限公司製 KAYARAD GPO-303)、新戊四醇四（甲基）丙稀酸酯（例如， Sartomer股份有限公司製SR295)等。 11 323318 201211171 又，本發明中，較佳係不含環狀結構之鏈狀結構之碳 數4至12的2至4多官能醇的2至4多官能（甲基）丙烯酸 酯，更佳係從上述例示之多官能（甲基）丙烯酸酯，除了三 %癸烧一甲醇一（甲基）丙婦酸醋以外，以鍵狀結構之2至 4多官能（甲基）丙稀酸酯較佳。 作為再較佳多官能（甲基）丙烯酸酯，可例舉1，6_己二 醇二（甲基）丙烯酸酯、三丙二醇二（曱基）丙烯酸酯、二丙 二醇二（甲基）丙烯酸酯、新戊四醇三（曱基）丙烯酸酯及三 經甲基丙院二（甲基）丙稀酸酯等，本發明之樹脂組成物較 佳係含有由此等所成之群組中選出之至少一者。 又，該多官能（曱基）丙烯酸酯（A)較佳係有一定範圍之 (甲基）丙稀酸基當量之多官能（甲基）丙稀酸酯。作為該（甲 基）丙烯酸基當量’較佳係85至160g/eq.，更佳係86至 157g/eq.。（甲基）丙烯酸基當量過少時，硬化時之收縮率 變大’因初期翹曲變大而不佳。另一方面，（甲基）丙烯酸 基當量過大時，樹脂變柔軟，硬塗層和光透過層之溫度所 致之彈性模數的變化率之差異變大，因硬塗層變得容易產 生裂縫而不佳。 再者’含有具該（曱基）丙婦酸基當量之多官能（曱基） 丙烯酸酯之本發明之樹脂組成物的硬化物，因從室溫之25 °C至高溫下之85°C彈性模數的變化的變化少，而可達成本 專利申請案之發明效果。 並且，將含有具該（甲基）丙烯酸基當量之多官能（曱基） 丙稀酸酿之本發明之樹脂組成物的硬化物作為光透過層而 12 323318 201211171 設置於基板上之光碟，保存於高溫（5〇至5 至5°C)之任一者時，皆可將翹曲之變化量抑制為^者。 在此，（甲基）丙烯酸基當量表示化合物之分子量除以 分子内之（甲基）丙烯醯基之數量（官能基數）之值。 又，本說明書所使用之「（甲基）丙烯酸基」之用語係 使用「丙烯酸基」或「甲基丙烯酸基」中至少一者之意義， 厂（曱基）丙烯酸酯」等用語亦以同樣意義使用。 在本發明之樹脂組成物中’該等（A)成分係可使用1 種或2種以上以任意之比例混合。 (A)成分之樹脂組成物中的含量（相對於樹脂組成物的 總量之含量，以下同樣的表達表示相同意義）通常係10至 70重量％ ’較佳係20至70重量％，更佳係25至50重量 % 0 又’相對於本發明之樹脂組成物所含之（甲基）丙烯酸 酯成分之總量，更佳係（甲基）丙烯酸基當量為85至 I60g/eq.之二（甲基）丙烯酸酯係60至100重量％，較佳係 80至1〇〇重量％，而其他的（曱基）丙烯酸酯成分係〇至2〇 重量％ ’較佳係〇至1〇重量％之情況。又，該情況下，其 他的（甲基）丙烯酸酯成分最佳係（曱基）丙烯酸基當量為 85至16〇g/eq·之三至四（甲基）丙烯酸酯（較佳係三（曱基） 丙烯酸酯）之情況。但，該情況下，胺基曱酸乙酯（甲基） 丙烯酸酯（B)係用作為多元醇之聚己内酯改質多官能醇所 得之胺基曱酸乙酯（曱基）丙烯酸酯以外之胺基甲酸乙崎 (甲基）丙烯酸酯。 13 323318 201211171 再者，因（A)成分過少時’於80°C之儲存模數E，有變 低之傾向，而放置於高溫多濕下時’光透過層有變得容易 產生裂縫之傾向。又，過多時，塗佈硬化時產生之基板的 翹曲（塗佈樹脂前的基板的翹曲與塗佈硬化樹脂後的勉曲 大小的差異：翹曲之變化量）有變大之傾向。 本發明之樹脂組成物所含有之胺基甲酸乙酯（曱基）丙 烯酸酯（B)係有提昇使用本發明之樹脂組成物貼合之光碟 的機械性特性之功能。具體上係減少前述之硬化時產生之 勉曲及/或扭曲’以及前述之硬化物之高溫保存（5〇至55 C)及/或低溫保存（〇至5°C)而產生之勉曲（保存前的翹曲 與保存後的翹曲之差異：翹曲之變化量）等。 又，胺基曱酸乙醋（甲基）丙埽酸酉旨盘其他（甲基）丙稀 酸酉旨比較，可在高溫m；維持高的儲存模數。 胺基甲酸乙酿（甲基）丙歸酸 、多 異氛基(:基 ，土 I乙酉日（甲基）内締酸酉旨⑻之合成所使用 之多元醇（a)’》子内具有2個以上輕基者即可無特別限定 地使用。例如，可例舉下述多元醇。 ⑴新戍項l1>5〜戊二醇、乙二醇、两二醇、 L4一丁一醇*，6己一醇、三羥甲基丙烷、新戊四醇、三 環癸炫二=雙姻甲基]、環己燒等脂肪族多元醉’ 通常係碳數為2至10之脂肪族多元醇 (⑴/述⑴所記載之月旨肪族7"元醇之一種與多元酸 之反應而得到之聚酯聚醇。 14 323318 201211171 再者，作為上述多元酸，例如，可例舉琥珀酸、酞酸、 六風欧酸針、對酜酸、己一酸、壬二酸、四氫欧酸酐等。 (iii)聚醚聚醇。 例如，聚乙二醇、聚丙二醇或聚四亞曱二醇等聚C2 «至C4伸烷基二元醇，環氧乙烷改質雙酚a等氧化C2至C3 伸烷基改質雙酚A。 上述之中，作為多元醇者，從提昇機械性強度，維持 高的80 C儲存模數之觀點來看，較佳係聚醚聚醇，更佳係 聚C2至C4伸烧基二元醇’最佳係聚丙二醇。 聚酯聚醇或聚醚聚醇之數平均分子量較佳係2〇〇至 8000左右’更佳係200至3000左右’再更佳係4〇〇至2000 左右，最佳係600至1500左右。 胺基曱酸乙酯（曱基）丙稀酸酯（B)的合成所用之多異 氰酸酯（b)係在分子内具有2個以上異氰酸g旨基之化合 物，例如較佳係在分子内具有2至3個異氰酸酯基之多異 氰酸酯，更佳係二異氰酸酯化合物。 例如’可例舉異佛酮二異氰酸脂、二異氰酸六曱酯、 二異氰酸甲苯酯、二異氰酸二曱苯酯或二苯基曱基_4, 4，-二異氰酸酯等。 其中’更佳係異佛酮二異氰酸脂或二異氰酸甲苯酯。 作為胺基曱酸乙酯（曱基）丙稀酸酯（β)的合成所用之 羥基（甲基）丙埽酸酯（c) ’只要為在分子内具有經基及（甲 基）丙烯醯基之化合物，即可無特別限制地使用。 例如’可例舉（曱基）丙稀酸經基乙酯、（曱基）丙婦酸 323318 15 201211171 羥基丙酯、（曱基）丙烯酸羥基丁酯、單（曱基）丙烯酸二甲 羥基％己酯等C2至C8脂肪族二元醇之單（曱基）丙烯酸酯。 刖述反應係，例如，可如以下而施行。 亦即’於前述多元醇（a)，其每1當量羥基中混合多異 氰酸酯使該異氰酸酯基較佳係成1.1至2.0當量，反應 酿度25至9CTC，較佳係於5〇至刖。(：反應，而合成胺基曱 酸乙醋寡聚物°織’於得狀胺基甲酸乙g旨寡聚物之每 1當量異氰酸酯基中混合羥基（曱基）丙烯酸酯（c)使該羥 基較佳係成1至I 5當量，於70至9〇。〇反應而可得到目 的之胺基甲酸乙酯（甲基）丙烯酸酯。 亦可以縮短該等之反應時間作為目的而使用觸媒，亦 可使用聚合抑制劑等。又，亦可從市場取得作為UX-0937 : 聚醚系胺基甲酸乙酯丙烯酸酯(日本化藥股份有限公司製) 等。胺基曱酸乙酯（曱基）丙烯酸酯（B)之分子量較佳係400 至10000 ’更佳係5〇〇至5000，再更佳係600至2500，依 情況更佳係700至1_〇。又，胺基曱酸乙醋（甲基）丙烯 酸酯之分子量係重量平均分子量。 本發明之樹脂組成物中，該等（B)成分之樹脂組成物中 之含罝通$係5至80重量％ ’較佳係2〇至7〇重量％。又， 依情況，較佳係30至70重量％，更佳係35至7〇重量％， 最佳係45至70重量％。 未達5重量％ ’則於80°C得到目標彈性模數之材料設 計有困難而不佳’超過80重量％則彈性模數過低而不佳。 上述（A)成分及（B)成分之合計含量係從得到於8(rc 323318 16 201211171 彈性模數為50至200MPa之硬化物之觀點來看，相對於該 樹脂組成物中所含之光硬化型樹脂成分（以下，亦稱為（甲 基）丙烯酸酯成分）之總量，較佳係70重量％以上，更佳係 80曰重量％以上，特佳係90重量％以上。上限係可到 重量％。 又，作為上述（A)成分及（B)成分之合計含量的相對於 本發明之樹脂組成物之總量的比例，係8〇至99 5重θ 更佳係90至99重量％。 ’ 置〇’ 又’本發明之較佳樣態之一，上述多官能（甲基）丙烯 酸醋（Α)係為具有前述（甲基）丙稀酸基當量85 i 之多官能（甲基）丙稀酸醋，而其與胺基甲酸乙醋（甲a = 稀酸醋之合計含4’㈣於本發明之韻組成物巾之（甲美 丙浠酸酯成分之合計含量，較佳係7G至_重量％，更^ 係80至100重量％，昜佔尨on ^ Ί 里/〇蚨佳係90至100重量％之樹脂組成 物。 更佳樣^^係上述較佳樣態中，具有（甲基）丙 烯酸基當量85至16〇—之多官能（曱基）丙烯酸醋係為下 述樹脂組成物：含二（甲基）㈣酸i旨，且相對於本發明之 樹脂組成物中之（曱基）丙稀酸酿成分之總量，至少含有50 重量％，較佳係80至刚重量％，更佳係9〇至i⑼重量 %之樹脂組成物，，在此情況下，胺基曱酸乙醋（甲基） 丙烯酸醋⑻係用作為多元醇之聚己内酯改質多官能醇以 外之胺基曱酸乙酯(甲基)丙烯酸酯。 又更佳樣L之係上述較佳樣態中，多官能（甲基） 323318 17 201211171 能(甲基)丙稀酸:系更佳樣態中’多官 醋而具體例舉甲基）丙稀酸 又’本發明之樹脂組成物中，單獨 (曱基）丙烯酸酯作為多官 ， r 此（甲基）丙烯酸酯時，胺基曱酸 =(甲基）丙稀動旨較佳為：多元醇係聚己内醋改質多官 外之多元醇’較佳係以用由聚乙二醇、聚丙二醇及 甲二_所成之群組中選出之㈣聚義得到之胺基 曱酸乙隨（甲基）丙稀酸醋；更佳係用聚丙二醇而得到之胺 基曱酸乙醋（甲基）丙稀酸酿。又，較佳係不含作為任意之 (甲基）丙烯酸酯成分之環氧基（曱基）丙烯酸酯。 作為本發明之樹脂組成物所含之光聚合起始劑（c)，只 要為前述丙烯酸酯化合物之光聚合可經紫外線而開始之化 合物，即無特別限定。 例如’可例舉卜羥基環己基苯基酮（IRGACURE-184 ; 汽巴精化（Ciba Specialty Chemicals)製）、2-經基-2-曱 基-[4-(1-曱基乙烯基）苯基]丙醇寡聚物（〇NE-Rifined)、 l-[4-(2-羥基乙氧基）-苯基]-2-羥基-2-曱基-1-丙烷-卜 酮（IRGACURE-2959 ;汽巴精化製）、2-經基-l-{4-[4-(2~ 經基-2-曱基-丙醢基）-苯曱基]-苯基卜2-甲基-丙烧-i-_ (IRGACURE-127 ;汽巴精化製）、2,2-二曱氧基-2-苯基苯乙 酮（IRGACURE-651 ;汽巴精化製）、2-羥基-2-曱基-1-苯基一 18 323318 201211171 丙烧-1-酮（DAROCUR 1173;汽巴精化製）、2-曱基-l-[4-(曱 硫基）苯基]-2-(N-嗎啉基）丙烷-卜酮（IRGACURE-907;汽巴 精化製）、2-苯甲基-2-二甲基胺基_i-(4-(N-嗎啉基）苯 基）-丁烧-1-_、2-氯硫雜蒽鲷（2-chlorothioxanthone)、 2, 4-二曱基硫雜蒽酮、2, 4-二異丙基硫雜蒽酮、異丙基硫 雜蒽鲷、2, 4, 6-三甲基苯甲醯基二笨基膦氧化物、雙 (2，.4,6-三曱基笨曱醯基）_苯基膦氧化物、雙（2,6_二曱氧 基苯甲醯基）-2, 4,4-三甲基戊基膦氧化物等。 本發明之樹脂組成物中，該等（C)成分係可使用1種或 2種以上以任意之比例混合。（[)成分之樹脂組成物中之含 置通常係0.5至20重量％，較佳係1至1〇重量％。在此， 含量未達0.5重量％則照射活性能量線時硬化不充分而不 佳’超過20重量％則對硬化物之物性有不良影響而不佳。 又’本發明之樹脂組成物之多官能（甲基）丙烯酸酯（A)、 胺基甲酸乙酯（甲基）丙烯酸酯（B)及（C)光聚合起始劑’各 自較佳之含量比例係，相對於樹脂組成物之總量，多官能 (甲基）丙烯酸酯（Α)為10至70重量％、胺基曱酸乙酯（曱 基）丙烯酸酯（Β)為20至70重量％、及光聚合起始劑（〇 為〇. 5至20重量％’較佳係1至1〇重量％，且，多官能（曱 基）丙烯酸酯（Α)和胺基甲酸乙酯（曱基）丙烯酸酯（Β)之合 °十含量係80至99. 5重量％，較佳係90至99重量％。 再者，亦可將可成為光聚合起始助劑之胺類等與上述 光聚合起始劑併用。作為可使用之胺類等，可例舉苯曱酸 、一'甲基胺基乙酯、二甲基胺基苯乙酮、對二甲基胺基苯 19 323318 201211171 曱酸乙酯或對二甲基胺基苯曱酸異戊酯等。雖亦可不含該 胺類等之光聚合起始助劑，惟因應需要而使用時，於本發 明之樹脂組成物中之含量通常係〇· 005至5重量％，較佳 係0. 01至3重量％。 本發明之樹脂組成物係可因應需要而添加防銹劑、抗 氧化劑、有機溶劑、矽烷偶合劑、聚合抑制劑、均平劑 (leveling agent)、抗靜電劑、表面潤滑劑、螢光增白劑、 光安定劑（例如，受阻胺（hindered amine)化合物等）、填 充劑等添加劑。受阻胺化合物係只要為公知者即可無特別 限定地使用’作為具體例例如，可例舉12,2,6, 6-五甲基 -4-哌啶基醇、2, 2, 6, 6-四曱基-4-哌啶基醇、（曱基）丙烯 酸1，2, 2, 6, 6-五甲基-4-哌啶基酯（艾迪科（ADEKA)股份有 限公司製，LA-82)等。 本發明之樹脂組成物係亦可因應需要，作為任意之（曱 基）丙稀酸醋成分而含有環氧基（曱基）丙烯酸酯或/及單官 能（曱基）丙稀酸酯。在本發明中，通常亦可不含有，其含 量相對於本發明之樹脂組成物之總量係〇至未達1〇重量 %，較佳係0至8重量％，更佳係〇至5重量％。 環氧基（曱基）丙烯酸酯雖通常大多為多官能（曱基）丙 稀酸醋，惟在本發明中’不包含於前述（A)成分之多官能（曱 基）丙烯酸酯。然而，就任意之（曱基）丙烯酸酯成分而言， 依情況，亦可含有於本發明之樹脂組成物。 就環氧基（曱基）丙烯酸酯而言，只要係環氧丙基醚型 環氧基化合物與（曱基）丙烯酸反應而得到者即皆可使用。 20 323318 201211171 鬌 作為得到魏基（甲基）㈣咖旨而収環氧丙基醚型 環氧基化合物者，可例舉雙㈣或其伸絲氧化物加成體 之-（壤氧丙基）㈣、雙紛F或其伸烧基氧化物加成體之二 (環氧丙基）ϋ、氫化雙紛A或其躲基氧化物加成體之二 (環氧丙基-、氫化雙㈣或其躲基氧化物加成體之二 (環氧丙基）趟、乙二醇二（環氧丙基）趟、丙二醇二（環氧丙 基）ϋ、新戊二醇二（環氧丙基）趟、丁二醇二（環氧丙基） 醚、己二醇二(環氧丙基)醚、環己烷二甲醇二(環氧丙基） 喊、聚=二醇二（環氧丙基）醚等。環氧基（曱基）丙婦酸醋 之分子量，較佳係500至loooo ,更佳係7〇〇至1〇〇〇〇。 環氧基（曱基）丙烯酸酯係該等環氧丙基醚型環氧基化 合物與（曱基）丙烯酸經如下述條件反應而得到。 相對於環氧丙基趟型環氧基化合物之環氧基1當量， 係以（曱基）丙烯酸0.9至1.5莫耳，較佳以〇95至hl 莫耳之比例反應。反應溫度較佳係8〇至12(rc，反應時間 係10至35小時左右。為了促進反應，例如，較佳係使用 三苯基膦、2, 4, 6-三（二甲基胺基曱基）酚（TAp)、三乙醇 胺、氯化四乙基銨等觸媒。又，反應中，就抑制聚合用之 聚合抑制劑而言，例如，亦可使用對甲氧基酚、曱基氫醌 等。 在此，從提昇機械性強度，維持高的8〇〇c儲存模數之 觀點來看’不使用特別是環氧基（曱基）丙浠酸酯亦無問題。 本發明之樹脂組成物係如上述，因應需要，亦可含有 單官能（曱基）丙烯酸酯，作為（A)成分及（B)成分以外之任 323318 21 201211171 意的（甲基）丙烯酸酯成分。 單官能（甲基）丙稀酸酯例如可例舉（曱基）丙烯酸苯氧 基乙酯、苯氧基聚乙二醇（甲基）丙婦酸酯、（甲基）丙稀酸 苯甲酯、（甲基）丙烯酸四氫糠酯、嗎啉（曱基）丙烯酸酯、（曱 基）丙烯酸苯基環氧丙酯、（甲基）丙稀酸2-經基丙酯、乙 氧基二乙二醇（曱基）丙稀酸酯、曱氧基二（三丙二醇）（曱基） 丙烯酸酯、三環癸烷（甲基）丙烯酸酯、異莰基（甲基）丙烯 酸酯、（甲基）丙烯酸二環戊二烯氧基乙酯、丙烯酸二環戊 烯基酯（例如，日立化成工業股份有限公司製FANCRYLrtm FA-511A)、丙烯酸二環戊烯基氧基乙酯（例如，曰立化成工 業股份有限公司製FANCRYLrtm FA-512A)、曱基丙烯酸二環 戊烯基氧基酯（例如，日立化成工業股份有限公司製 FANCRYLrtm FA-512M)、丙烯酸二環戊烧基酯（例如，日立化 成工業股份有限公司製FANCRYLRTM FA-513A)、曱基丙烯酸 二環戊烷基酯（例如’日立化成工業股份有限公司製 FANCRYLRTM FA-513M)、丙稀酸1-金剛烧基酯（例如，出光 興產股份有限公司製Adamantate AA)、丙稀酸2-曱基-2-金剛烷基酯（例如，出光興產股份有限公司製Adamantate ΜΑ)、丙稀酸2-乙基-2-金剛烧基自旨（例如，出光興產股份 有限公司製AdamantateRTM ΕΑ)、曱基丙稀酸1-金剛烧基酯 (例如，出光興產股份有限公司製AdamantateRTM AM)、環 氧乙烷改質苯氧基化磷酸（曱基）丙烯酸酯、環氧乙烷改質 丁氧基化磷酸（曱基）丙烯酸酯及環氧乙烷改質辛基氧基化 填酸（曱基）丙烯酸g旨等。 22 323318 201211171 再者，上述中上標之RTM係表示登錄商標，以下皆同 義。 又，前述說明受阻胺之處所例舉之（曱基）丙烯酸 1, 2, 2, 6, 6-五甲基-4-哌啶基酯雖係單官能（甲基）丙烯酸 酯，但在本說明書中分類於受阻胺，不包含於作為任意成 分之單官能（曱基）丙烯酸酯。 就上述之任意的（甲基）丙烯酸酯成分之單官能（甲基） 丙烯酸酯而言，相對於本發明之樹脂組成物之總量，例如 雖亦可含0至20重量％ ’較佳係〇至1〇重量％左右，更 佳係0至5重量％左右之範圍’但不須如實施例所示地含 有。 本發明之樹脂組成物係可於常溫至80〇C混合溶解述 各成分而得到，依需要而亦可用過濾等操作而去除雜質。 本發明之樹脂組成物，考慮塗佈性，較佳係適宜地調節成 刀之調配比成25C之黏度為30至200 OmPa · s之範圍，特 佳係調整為25°C之黏度為500至l8〇〇mPa · s。 又，重要者為’本發明之樹脂组成物係調製成該樹脂 組成物的硬化物於8(TC之儲存模數E，成為50至200MPa 之範圍。藉此，可達成前述之本發明的效果。 再者，本發明之樹脂組成物中，該樹脂組成物的硬化 物於25 C之儲存模數與8〇ΐ之儲存模數E’的差異相較地 小亦為特徵之一。例如，本發明之樹脂組成物的硬化物於 25C之儲存模數較佳係500至15〇OMPa之範圍，更佳係6〇〇 至lOOOMPa之範圍。依此，本發明之樹脂組成物的調製較 323318 23 201211171 佳係25t之儲存模數成為上述範圍。 25C之儲存模數過低時，則作為光碟之光透過層時， 無法有充分之硬度，又，過高時，則硬化時光碟之翹曲變 得過大而不佳。 又，本發明之樹脂組成物中，其硬化物於8{rc之儲 模數E，對25Ϊ之儲存模數之比例，亦即，歡之儲存模 數£，/25<t之儲存模數之值係〇.〇5至0.20之範圍時更、 佳，再更佳係〇, 05至〇. 15左右，最佳係〇 〇7至〇. 15左 右。 本發明之樹脂組成物係經由照射紫外線，而可成硬化 物。該硬化物係具有上述儲存模數，同時透明度高，藍光 光碟等所使用之波長4〇〇nm左右的光之透過率高，例如/ 厚度100/ζιη的硬化膜中，波長405nm的光之透過率係可 85%以上者，較佳係可9〇%以上者。 、以上說明之本發明之樹脂組成物的較佳樣態係例舉於 (I)具有有機色素層之光碟用紫外線硬化型樹脂組成 物（以下稱為樹脂組成物），相對於樹脂組成物的總量，含 有多官能（曱基）丙烯酸酯（A)10至70重量％和胺基甲酸3乙 賴（甲基）丙烯酸醋（B)5至80重量％及光聚合起始劑 (C)0. 5至20重量％之樹脂組成物， (1) 多官能（曱基）丙烯酸酯（A)之（曱基）丙烯酸基當 里係 85g/eq.至 160g/eq.， (2) 該樹脂組成物的硬化膜於80°C之儲存模數E，係、 323318 24 201211171 50至200MPa之範圍。 (II)上述（I)所記載之樹脂組成物’其係含有多官能 (甲基）丙烯酸醋（A)20至70重量％和胺基曱酸乙酯（甲基） 丙烯酸酯（B)20至70重量％，（A)成分及成分之合計含 量係相對於樹脂組成物中所含之（曱基）丙烯酸酯成分的總 量{(A)成分、（B)成分及作為任意之（曱基）丙烯酸酯成分之 單官能（甲基）丙烯酸酯或/及環氧基（甲基）丙烯酸酯之合 計含量}，至少含80重量％。 (ΠΙ)上述（I)或（π)所記載之樹脂組成物，其中，多 吕月t* (甲基）丙浠酸酯（A)係由1,6-己二醇二（曱基）丙烯酸 酉曰、1,4-丁二醇二（甲基）丙稀酸酯、三丙二醇二（甲基）丙 烯酸酯、二丙二醇二（甲基）丙烯酸酯、三環癸烧二甲醇二 (曱基）丙烯酸酯、新戊二醇二（甲基）丙烯酸酯、新戊四醇 三（甲基）丙烯酸酯、三羥曱基丙烷三（曱基）丙烯酸酯、E〇 改質甘油三（曱基）丙烯酸酯、P0改質甘油三（甲基）丙烯酸 酯及新戊四醇四（曱基）丙烯酸酯所成之群組中選出之至少 —者。 (IV) 上述（ΠΙ)所記載之樹脂組成物，其中，多官能 (甲基）丙烯酸酯（A)係除了三環癸烷二曱醇二（甲基）丙烯 酸醋以外之多官能（曱基）丙烯酸酯。 (V) 上述（111)所§己載之樹脂組成物，其中，多官能（甲 基）丙烯酸酯（A)係由1,6-己二醇二（曱基）丙烯酸酯、三丙 一醇二（曱基）丙烯酸酯、二丙二醇二（甲基）丙烯酸酯、新 戊四醇二（甲基）丙烯酸酯及三羥曱基丙烧三（甲基）丙烯酸 323318 25 201211171 酯所成之群組中選出之至少一者。 (VI) 上述（1)或（¥)中任一項所記載之樹脂組成物，其 中’胺基甲酸乙醋（曱基）丙稀酸酯⑻係聚酯聚醇或聚越聚 醇之至少一者與多異氰酸酯反應所得之反應物，與含有羥 基之（甲基）丙烯酸酯反應而得到分子量為400至10000之 胺基甲酸乙酯（曱基）丙烯酸酯。 (VII) 上述（v I)所s己載之樹脂組成物，其中，多官能 (曱基）丙烯酸酯（A)係單獨1,6-己二醇二（甲基）丙烯酸酉^ 時’胺基曱酸乙酯（曱基）丙烯酸酯（B)係除了含内酯結構之 胺基曱酸乙酯（曱基）丙烯酸酯以外的胺基曱酸.乙酯（甲基） 丙烯酸酯，且，不含作為任意之（曱基）丙烯酸酯成分之環 氧基（甲基）丙烯酸酯。 (VIII) 上述（VI)所§己載之樹脂組成物，其中，胺基甲 酸乙S旨（曱基）丙烯酸g旨（Β)係由聚乙二醇、聚丙二醇及聚四 亞曱二醇所成之群組中選出之聚醚聚醇與異佛酮二異氰酸 脂或二異氰酸曱苯酯反應所得之反應物，與含有經基之（甲 基）丙烯酸酯反應而得到分子量為400至10000之胺基曱酸 乙酯（曱基）丙烯酸酯。 (IX )上述（I)或（V111)中任一項所記載之樹脂組成 物’其中，多官能（甲基）丙烯酸酯（A)係單獨二（曱基）丙埽 酸酯或二（曱基）丙稀酸酯與三至六（曱基）丙埽酸酯之兩.者 所成，相對於樹脂組成物中的（曱基）丙烯酸酯成分之總 量，至少含5 0重量％二（甲基）丙稀酸醋，但，此情況下， 胺基曱酸乙酯（曱基）丙烯酸酯（B)係為將聚己内酯改質多 26 323318 201211171 官能醇用作為多元醇所得之胺基甲酸乙酯（ 以外之胺基甲酸乙酯(甲基)丙烯酸酯。 土 烯酸酯 (X)上述（IX)所記載之樹脂組成物，其中，一 丙烯酸酯之含量係7〇至1〇〇重量％，較佳曱基） 量％，更佳係90至1〇〇重量％。 ’、至丨〇〇重 ⑼上述⑴或〇〇中任一項所記载之光碟 硬化型樹脂組成物，其中，胺基甲酸乙酯（ 、、、’ ⑻係由聚乙二醇、聚兩二醇及聚四亞甲二醇所T烯酸醋 選出之聚醚聚醇與異佛酮二異氰酸脂或二異氰酸之，，中 應所得之反應物，與含有羥基之(曱基)丙烯酸自= 到之胺基甲酸乙酯（甲基）丙烯酸酯，多官能（甲美\ 酯（A)係（曱基）丙烯酸基當量85g/eq.至i6〇g/eq ^烯酉文 丙烯酸醋’環氧基（曱基）丙烯酸醋之含量 物之總量，係0至未達1Q重量％。 組成 (XII) 上述（I)或（XI)中任一項所記載之具有有機色 素層之光碟用紫外線硬化型樹脂組成物，其中，光碟用紫 外線硬化型樹脂組成物之硬化膜於25°c之儲存模數係5〇〇 至 1500MPa。 (XIII) 上述（I)或（XII)中任一項所記載之具有有機 色素層之光碟用紫外線硬化型樹脂組成物，其中，光碟用 紫外線硬化型樹脂組成物之硬化膜於80Ϊ之儲存模數對 25°C之儲存模數之比係〇.〇5至〇.20。 本發明之樹脂組成物係可藉由照射紫外線而成本發明 之樹脂硬化物。本發明之樹脂組成物由於如下述使用於光 27 323318 201211171 係利用作為光碟等 透過層’故上述之本發明之樹脂硬化物 之硬化物層（光透過層）。 本發明之樹脂組成物係可適宜地使用作為 雷射入射侧之光透過層用塗佈劑。具體上，以令 = 脂膜厚成為丨至脚m之方式，以任意方法（例如^ 塗佈法（spin⑽ting)、2P法、滾筒式塗佈法網印刷法 等）而將組成物塗覆於光碟基板。塗覆後，從單面或雙面昭 射紫外線至近紫外線（波長2〇〇至4〇〇nm附近）之光線而硬 化。硬化後之膜厚係幾乎對應塗佈膜厚，而為i至、刚^ 左右。照射量較佳係約50至1500mJ/cm2，特佳係1〇〇至 lOOOmJ/cm2左右。照射紫外線至近紫外線之光線所致之硬 化，只要係照射紫外線氧紫外狀光線的燈即不問光源 為何。例如，可例舉低壓、高壓或超高壓水銀燈、金屬齒 素燈、（脈衝）氙燈、或無電極燈等。 本發明之樹脂組成物之硬化物的儲存模數E，係依據 JIS K 7244-5之動態黏彈性測定法而測定。亦即，使用 Fusion燈D燈泡（bulb)，lJ/cm2之積算光量而製作硬化成 為長度5cm、寬度lcm、厚度1mm大小之樣本片，經由精工 盈司電子科技有限公司（SII NanoTechnology Inc.)製之黏 彈性裝置DMS6100而施行測定。測定係以彎曲模式施行， 以振幅荷重lOmN、頻率10Hz、升溫速度2°C /分鐘之條件， 於-50°C至150°C之範圍施行測定。 本發明之樹脂組成物係可使用於形成於紀錄層或界面 層上之光透過層（樹脂層）之形成。該光透過層（樹脂層）係 28 323318 201211171 可以同一組成之一層構成或以不同組成的二層以上之多層 構成。然而’在光透過層為多層之樹脂層所構成之情況， 在圓盤之生產上無效率，因在生產速度、成品率、生產裝 置方面的成本變高，而光透過層較佳係同一組成之一層構 成。本發明之樹脂組成物係可用於作為單層用或多層用之 任一者的光透過層，適於作為接連紀錄層或界面層之光透 過層’特別適於一層構成之光透過層用。 亦即’使用本發明之樹脂組成物時’就算用前述同一 組成之一層構成之情況下，環境試驗後硬塗層亦無產生裂 縫之虞慮，在紀錄時以及環境試驗後可得到良好之信號特 性。據此，特別有用於一層構成之光透過層用。 本發明之樹脂組成物係適於使用有機色素層（以下，稱 為有機色素紀錄層）作為紀錄層之光碟用。 有機色素紀錄層之材料對於使用於紀錄播放之雷射光 的波長必須有感光性。再者，有機色素紀錄層之材料係需 有經雷射光之照射之物理變化或化學變化所致之折射率的 變化。因此，有機色素紀錄層之材料，例如，可用花青色 素、氧雜菁（〇X〇n〇1)色素、偶氮色素、酞花青色素、紫質 系色素。該等有機材料例如使用與乙酸赛璐蘇（Gellosolve acetate)、四氟丙醇等溶劑混合所得之混合溶液，以旋轉 塗佈去等成有機色素紀錄層。有機色素紀錄層之膜厚 較佳係15nm以上25nm以下》 界面層係有防止光透過層成膜時有機色素層所含之色 素擴散至光透過層’和賴光透過相之硬储脂之溶劑 323318 29 201211171 等對有機色素層之滲料混合現象之機能。構成該界面層 之材料，可例舉氧切尤其是二氧切和氧化鋅、氧化飾、 氧化纪等氧化物，硫化鋅、魏料硫化物，氮切等氮 化物’碳㈣，氧化物和硫之混合物，二氧切和硫化辞 之混合物，氧化料1界面層似雜（聊加㈣等 方法所形成。 本發明之樹脂組成物係適於如上述之單層構成之光透 過層，光透過層係由形成於紀錄層或界面層上之第一樹脂 層，和從第一樹脂層來看紀錄層或界面層側的另一面上所 形成之第二樹脂層所構成時，亦即，光透過層由不同組成 之二層所構成時，亦可使用作為前述第一樹脂層及/或第二 樹脂層。 此情況下，前述第一樹脂層的厚度通常係1 y m至50 ，較佳係5/zra至40//m，更佳係10/zm至30/zra。 又，前述第二樹脂層的厚度通常係5〇em至looym， 較佳係60；czm至95/zm，更佳係7〇em至90am。 另一方面，光透過層由一層所構成時，樹脂層的厚度 通常係70^111至100/zm，較佳係80/zm至95/zm。 使用本發明之樹脂組成物的光透過層較佳係鄰接地設 置於前述有機色素紀錄膜或界面層上。如此地以直接接觸 有機色素紀錄膜或界面層之方式設置使用了本發明之樹脂 組成物的光透過層，藉此，可在耐久性試驗前後得到良好 之紀錄特性。 又，藉由將使用了本發明之樹脂組成物的光透過層作 30 323318 201211171 成如同前述之一層構成，就算在光透過層上設置硬塗層， 亦可防止因财久性試驗而硬塗層產生裂縫。 使用了本發明之樹脂組成物而形成之光透過層的物理 性強度弱時，可因應需要而於該光透過層的表面施行硬塗 處理。 如同上述，藉由在具有有機色素紀錄膜或有機色素紀 錄膜與界面層之光碟基板的有機色素紀錄膜上或者界面層 上塗佈本發明之樹脂組成物，使其硬化，形成光透過層， 並因應需要而在該光透過層上設置硬塗層，藉此可得到本 發明之光碟。 (實施例） 以下，雖藉由實施例而更具體說明本發明，但本發明 並不受限於該等實施例。 經以表1所示之組成調製實施例1至4及比較例1至 2之紫外線硬化型樹脂組成物。 31 323318 201211171 [表1]樹脂組成物及評價結果 實施例1 實施例2 實施例3 實施例4 比較例1 比較例会 多官能（曱基）丙烯酸酯 (A) A-1 33 33 26 A-2 37 40 A-3 40 A~4 3 7 14 胺基曱酸乙酯（曱基）丙 烯酸酯(B) UA-1 62 55 55 55 55 55 光聚合起始劑(C) C-1 4 4 4 4 4 4 光安定劑(D) D-1 1 1 1 1 1 1 25°C之儲存模數(MPa) 660 980 720 1380 - — 80°C之儲存模數(MPa) 75 55 51 196 240 31 初期勉曲 初期翹曲（度） -0.8 -0.7 ~0.5 -1.4 -1.6 -0.4 判定 〇 〇 〇 〇 X 〇 耐久試驗前後的記錄信 號特性 耐久試驗前的抖動值 (%) 6.5 6.4 6.6 7 6.9 6.8 判定 〇 〇 〇 〇 〇 〇 耐久試驗後的抖動埴 (%) 8.9 8.4 8.8 9.3 9.4 - 判定 〇 〇 〇 〇 〇 X 裂縫評價 耐久試驗後裂縫的有無 無 無 無 無 無 有 再者’表1中以簡稱所示之各成分係如同下述。 A-1 . 1,6-己二醇二丙烯酸醋，Cognis Japan股份有 限公司製Photomer-4017(丙烯酸基當量：127g/eq) A-2 :三丙二醇二丙烯酸酯，DAICEL_CYTEC股份有限 公司製TPGDA(丙烯酸基當量：l5〇g/eq) A-3 .二丙二醇二丙稀酸酯，c〇gnis Japan股份有限 32 323318 201211171 公司製Photomer-4226(丙婦酸基當量：12lg/eq) A-4 :新戊四醇三丙烯酸酯，日本化藥股份有限公司製 KAYARAD PET-30C丙烯酸基當量：87g/eq) UA-1 ·聚丙二醇（分子量1000)、二異氰酸甲苯酯、丙 烯酸2-羥基乙基酯之3個成分以莫耳比1 : 2 : 2經如同前 述之反應而得到之胺基曱酸乙酯丙烯酸酯 C-1 : 1-羥基環己基苯基酮，汽巴精化股份有限公司製 IRGACURE-184 D-1 :曱基丙烯酸H 2, 6, 6-五曱基-4-哌啶基酯，旭 電化股份有限公司製LA-82 本發明之80 C的儲存模數E，及25°C的儲存模數之值 係依據JISK 7244-5之動態黏彈性測定法而測定。亦即， 使用Fusion燈D燈泡（bulb)，1J/cm2之積算光量而製作硬 化成為長度5cm、寬度lcm、厚度lmm大小之樣本片，經由 精工盈司電子科技有限公司製之黏彈性襄置DMS6100而施 行測定。測定係以彎曲模式施行，以振幅荷重劃、頻率 職、升溫歧2。(：/分鐘之條件，於幻抓之範圍 施行測定。 使用得到的本發明之劃旨喊物製作具有色素紀錄層 之藍光光碟，施行特性評價。 藍光光碟之製作 · 金以成為剛nm膜厚的方式魏於具有執矩 其_的引導溝槽之直徑12cm、厚度h -的聚礙酸酉旨 土而幵^成反射層。其後，將偶氮色素溶解於聊（四氣丙 323318 33 201211171 醇）溶劑之色素溶液經旋轉塗佈法塗佈，於8(rc乾燥3〇分 釦而形成色素紀錄層。再者，將ZnS_Si〇2(莫耳比8〇 : 2〇) 以成為約15nm厚度的方式濺鍍，而形成界面層，製作出藍 光光碟基板。 2. 使藍光光碟基板之界面層朝上方地放置於旋轉台 上，施行圓狀之蓋（cap)處理而覆蓋至内徑11· 5mm，接著 k供本發明之樹脂組成物於2. 〇 g中心部之蓋上。 3. 配合本發明之樹脂組成物的黏度，於7〇rpm至 120〇rpm之速度範圍旋轉塗佈4秒至7秒，各塗佈膜厚係 成95/zm的方式塗佈。旋轉塗佈結束時，以氙氣閃光燈照 射2次，硬化至無表面流動性的程度。 4. 使用高壓水銀燈，從上方以4〇〇mJ/cm2照射3秒而 完全硬化本發明之樹脂組成物。 5. 使硬化之本發明之樹脂組成物朝上方地放置於旋 轉台上，施行圓狀之蓋處理而覆蓋至内徑u.5mm，接著提 供HOD-3950BC日本化藥股份有限公司製藍光光碟用硬塗 用樹脂）於3. 0g中心部之蓋上。 6. 以4000ι·ριη的速度範圍旋轉塗佈4秒至7秒，塗佈 成塗佈膜厚為5//m。旋轉塗佈結束後，使用高壓水銀燈， 從上侧以400ijiJ/cm2照射3秒而完全硬化jj〇d_395〇b，製作 本發明之藍光光碟。 (a)初期翹曲 光碟的翹曲的數值係用光碟的機械特性測定裝置之 Argus blueOr.schwab公司製）施行。翹曲值隨著成為圓 323318 34 201211171 盤的邊緣而顯現出顯著的差異，因此以接近外圍端半徑 58mm的值做評價。 表中的初期翹曲係以下述數式計算出。 初期勉曲=塗佈後的基板的翹曲一塗佈前的基板的翹曲 勉曲的單位以度表示。以下述基準施行判定。 〇 初期翹曲>-1.5 X 初期翹曲$-1. 5 (b )藍光光碟的耐久性試驗前後的紀錄信號特性 將本發明之光碟及比較例之光碟於8〇〇C、85%RH環境 下放置1〇〇小時。用藍光光碟資料信號測定裝置PULSTEC INDUSTRIAL股份有限公司製〇DU_1〇〇〇，測定耐久性試驗前 後的藍光光碟的紀錄信號特性（抖動值），以下述基準評價。 抖動值係光碟的電氣信號之一，該等之數值高，表示藍光 光碟的信號資料有劣化，而1〇%以上則資料的讀寫變困 難。再者，測定為以半徑48mm的值評價。 抖動值的評價 〇抖動值未達10. 0%。 x 抖動值10. 〇%以上。或無法測定。 (c)裂缝評價 耐久試驗後’以目視確認光碟的硬塗層的裂縫的有無。 由表1的結果，確認實施例1至4的本發明之樹脂組 成物係在耐久性試驗前後得到良好的紀錄信號特性，硬塗 層未產生裂缝’又’塗佈硬化時的翹曲的變化量亦少。另 —方面，8(TC之儲存模數E，比特定範圍高的比較例1對基 35 323318 201211171 板造成的翹曲量大，又，80°C之儲存模數e，比特定範圍小 的比較例2於耐久性試驗中硬塗層產生裂縫，而不可能測 定紀錄信號特性。 (產業上之可利用性） 本發明之樹脂組成物係適於形成具有有機色素紀錄層 之光碟用光透過層，以鄰接具有有機色素紀錄層之光碟基 板的有機色素紀錄層或界面層之方式，於該等之層上塗佈 硬化本發明之樹脂組成物而形成光透過層，藉此’該樹脂 組成物的塗佈硬化時的光碟基板的翹曲小，初期之抖動值 低至7%以下，且在高溫多濕下的耐久試驗後，抖動值未 達10%，初期及耐久試驗後的任一者紀錄信號特性皆優 異’且’形成於該光透過層上的硬塗係耐久試驗後亦未產 生裂縫等’可得到耐久性優異的光碟。據此，本發明之樹 脂組成物作為具有有機色素紀錄層之光碟用光透過層形成 用的樹脂組成物係於產業上非常有用。 【圖式簡單說明】 益 【主要元件符號說明】 無 36 323318201211171 SUMMARY OF THE INVENTION Technical Field The present invention relates to an ultraviolet curable resin composition suitable for use in an optical disc having an organic dye recording layer, and a disc having a cured layer thereof. [Prior Art] As a practical optical disc recording medium, there is a disc of a protective layer made of a recording layer, a reflective layer, and an ultraviolet curable resin on a 12-inch polycarbonate substrate, such as a CD-R. Or CD-RW, and (2) will be 0. 6_ polycarbonate substrate with a recording layer and a reflective layer. A 6 mm polycarbonate substrate is bonded to an ultraviolet curing resin such as DVD-R, DVD+R, DVD-RW, DVD+RW, and DVD-RAM. Further, in recent years, a Blu-ray Disc (BD-R) having a recording capacity of about 5 times that of a single-layer type DVD has been sold. Blu-ray discs are tied to 1. A reflective layer, a recording layer, and an interface layer are formed on a transparent or opaque plastic substrate of 1 mm, and a structure of a light transmitting layer of about 0.1 mm is laminated on the interface layer, and a disc recorded/played through the light transmitting layer is formed. . The recording layer is an organic dye and an inorganic compound, the interface layer is made of a light-transmitting inorganic substance, and the light-transmitting layer is a cured layer of an ultraviolet-hardening type resin. In a Blu-ray disc having a recording layer formed of an organic pigment, laser light is irradiated onto the recording layer, and the deformation due to the volume change of the organic pigment is used for recording. In order to compensate for the volume change of the pigment to obtain excellent recording signal characteristics (for example, jitter characteristics), it has been proposed to form a light transmission layer having an elastic modulus of 25 MPa or less at 40 ° C on the interface layer (Patent Literature) 1), and a technique of forming a light transmission layer having a modulus of elasticity of 25 ° C at 34 to 96 MPa 4 323318 201211171 (Patent Document 2). Further, as an evaluation index of the reliability of the above-mentioned optical disc recording medium, for example, it has been proposed to perform the observation mode test at the temperature 8 (TC/relative humidity 8〇% RH # environment for 1 hour) and the Let m], after the '2 record (10) degree of deterioration of the environmental test. In order to make the environmental test month, the deterioration of the recorded signal characteristics after j is within the expected range, and formed on the interface layer at 5C and The elastic modulus of 55 系 is 1 MPa or less, and the elastic modulus of 5 C is 55. (The ratio of the modulus of elasticity is less than 1 之 of the light transmission layer (Patent Document 3). [Patent Document 1] [Patent Document 1] JP-A-2008-123703 (Patent Document 3) JP-A-2008-026703 (Patent Document 3) (Problems to be Solved by the Invention) Patent Documents 1 to 3 have proposed 'in order to compensate for the volume change of the dye to obtain excellent recording signal characteristics (for example, jitter characteristics), and to store the modulus below a specific value. Use of proposals in 1 to 3 The light transmission layer formed by the protective coating agent for the light transmission layer has a weak physical strength, and a hard coat layer must be provided on the surface of the light transmission layer. It has been known that the light transmission layer will be formed and then light. A disc made by hard coating on the surface of the layer is subjected to an environment test of 323318 5 201211171 at a temperature of 8 (TC/rel. humidity 85% RH) in a high temperature and high humidity environment, causing cracks in the hard coat layer. In the case where the hard coating of the optical disc is cracked, not only the recorded signal characteristics (for example, jitter characteristics) are lowered, but also the optical recording medium cannot be used. The storage modulus of the light transmitting layer is improved to prevent environmental testing. The occurrence of cracks in the hard coating layer. However, since the storage modulus of the light transmission layer is too high, the expansion deformation of the recording layer is suppressed, and the formation of the recording mark becomes difficult. Moreover, even the formation of the high storage modulus and the recording mark is formed. In the coexisting resin, when the coating is hardened, if the amount of warpage on the substrate is large, there is a problem that an error occurs easily during writing and reading. The object of the invention is to provide an ultraviolet curable resin composition which can be used for a disc having an organic pigment layer, and which does not cause cracks when placed under high temperature and high humidity, and can impart sufficient "recording signal characteristics, and further, coating hardening. The warpage of the substrate is small. (Means for Solving the Problems) As a result of intensive studies to solve the above problems, the present inventors have found that polyfunctional (meth)acrylic acid vinegar and ethyl urethane (f-based) acrylic acid are contained. Ester, and the cured film is 8 (rc storage modulus E), which is a specific range of the ultraviolet curing resin composition, even if the hardened layer having the hard coating applied thereto is placed under the temperature and humidity, hard The coating also does not produce cracks, which may result in insufficient recording signal characteristics, and the warpage of the substrate produced during coating hardening is also small, and the completion of the present invention is achieved. That is, the present invention relates to the following (1) to (13). (1) An ultraviolet curable resin for an optical disk having an organic pigment layer, and the composition thereof comprises (4) a polyfunctional (meth) propylene vinegar and (8) an amine group 6 323318 201211171 acid ethyl ester (methyl) propyl The ultraviolet curable resin composition for the optical disk of the dilute acid ester and (c) photopolymerization initiator, and the storage modulus E of the cured film at 80 ° C is in the range of 50 to 200 MPa. (2) Poly((mercapto) acrylate (A) (meth) propyl acetoate when | quantity is 85g / eq. The ultraviolet curable resin composition for an optical disk having an organic color layer described in the above (1), which is described in the above (1). (3) Aminoethyl decanoate (M) acrylate (B) is an alkyl methacrylate (meth) acrylate having a molecular weight of 4 to 10,000, or the above-described optical disk having an organic pigment layer A UV curable resin composition is used. (4) The polyfunctional (meth) acrylate (A) is composed of 1,6-hexanediol di(meth)acrylate, 1,4-butanediol di(decyl)acrylate, and tripropylene glycol di( Mercapto) acrylate, dipropylene glycol bis(indenyl) acrylate, tricyclodecane dimethanol bis(indenyl) acrylate, neopentyl glycol di(meth) acrylate, neopentyl alcohol tris(methyl) Acrylate, trishydroxypropyl propane tris(decyl) acrylate, EO modified glycerol tri(meth) acrylate, p 〇 modified glycerol tri(meth) acrylate, neopentyl alcohol tetra (methyl) An ultraviolet curable resin composition for an optical disk having an organic pigment layer according to any one of the above (1) to (3), which is selected from the group consisting of the acrylate. (5) Amino decyl acrylate (B) acrylate (B) is a polyol and a polyisocyanate and a reaction product containing a thiol-based crosin, a polyol polyester An ultraviolet curable resin composition for an optical disk having an organic pigment layer according to any one of the above (1) to (4), which is an alcohol and/or a polyether polyol. (6) Resin composition containing polyfunctional (fluorenyl) acrylate 323318 7 201211171 (A) 10 to 70% by weight and ethyl urethane (meth) propylene § | (Β) 5 to 80 weight % and photopolymerization initiator (C) 0. The ultraviolet curable resin composition for an optical disk having an organic dye layer according to any one of the above (1) to (5), which is characterized in that the composition is in an amount of from 5 to 20% by weight. (7) Total amount of (A) polyfunctional (meth) acrylate and (B) amino ruthenium ethoxide (decyl) acrylate relative to the total amount of (fluorenyl) acrylate vinegar contained in the resin composition The ultraviolet curable resin composition for optical disks having an organic pigment layer according to any one of the above (1) to (6). (8) Polyfunctional (meth) acrylate (A) (meth) acrylate based on 85 g / eq. Up to 160g/eq. The (mercapto) acrylate, ethyl decanoic acid ethyl (meth) acrylate S (B) is a poly(S) poly(polyhydric acid) or a poly-polyol which is obtained by reacting at least one of polyisocyanate The reaction product is reacted with a hydroxyl group-containing (mercapto) acrylate to obtain an ethyl urethane (meth) acrylate having a molecular weight of 400 to 10,000, which is organic as described in any one of the above (1) to (7). The optical layer of the pigment layer is an ultraviolet curable resin composition. (9) Ethyl decanoate (meth) acrylate (8) is a polyether polyol and isophorone selected from the group consisting of polyethylene glycol, polypropylene glycol and polytetramethylene glycol. The reaction product obtained by reacting diisocyanate or toluene diisocyanate, and reacting with a mercapto-containing (mercapto) acrylate to obtain ethyl urethane (mercapto) acrylate (1) to (8) The ultraviolet curable resin composition for an optical disk having an organic pigment layer according to any one of the preceding claims. (10) Polyfunctional (fluorenyl) acrylates are composed of 16-hexanediol di(meth)acrylate, 1,4-butanediol di(meth)acrylate, and tripropylene glycol di(曱8 323318 201211171 ) acrylate, dipropylene glycol di(meth) acrylate, tricyclodecane decyl di(meth) acrylate, neopentyl glycol di(decyl) acrylate, neopentyl alcohol tris(decyl) Acrylate, trimethylolpropane tri (meth) acrylate, E0 modified glycerol tri(meth) acrylate, p 〇 modified glycerol tris(meth) acrylate and neopentyl alcohol tetrakis An ultraviolet curable resin composition for an optical disk having an organic pigment layer according to any one of the above (1) to (9), wherein the acrylate is a group of the acrylate. (11) Polyfunctional (meth) acrylates are ruthenium, 6-hexanediol bis(indenyl) acrylate, tripropylene glycol di(meth) acrylate, dipropylene glycol bis(indenyl) acrylate vinegar, The above-mentioned (1) to (9) of the group selected from the group consisting of pentaerythritol tris(sulfonyl) acetoacetate and tris(tetra)propenyl tris(decyl) acrylate An ultraviolet curable resin composition for a disc having an organic pigment layer. > (12) Acetoacetate (mercapto) acetoacetic acid vinegar (8) is a polycondensation group selected from polyethylene glycol, polypropylene glycol and polytetramethylene glycol. The ketone diisophile or diisocyanate f benzene is reacted with the reaction of the (meth)acrylic acid vinegar containing the transbasic group to obtain the urethane diacetate 'polyfunctional (meth) propyl Dilute vinegar (A) is a (methyl) propylene broad base field 85g / eq · to i6 〇 g / eq. The content of the (meth) acrylate and the epoxy group (indoyl) acrylate is based on the total amount of the resin composition, and the organic pigment layer described in the above (7) is less than 10% by weight. The optical disc is made of an ultraviolet curable resin composition. . (13) The storage modulus of the cured film of the ultraviolet curable resin composition for the optical disc at 25 c is 5 〇〇 〇 5〇, and any of the above (1) to (12) 9 323318 201211171 has The optical film of the organic pigment layer is an ultraviolet curable resin composition. (14) The storage modulus of the cured film of the ultraviolet curable resin composition for optical discs at 80 °C is 2 5 . The ratio of the storage modulus of 〇 is 0. 05 to 0. 20) The ultraviolet curable resin composition for a disc having an organic pigment layer contained in 03). (15) A cured product obtained by irradiating the ultraviolet curable resin composition described in any one of the above (1) to (μ) with an active energy ray. (16) The organic dye recording layer having the cured layer obtained by applying the ultraviolet curable resin composition according to any one of the above (1) to (14) to an optical disk substrate and irradiating the active energy ray CD. (Effect of the Invention) The ultraviolet light-curable resin composition for an optical disk having an organic pigment layer of the present invention (hereinafter referred to as the resin composition of the present invention) can be obtained by using the light-transmitting layer of the optical disk having the organic dye recording layer. When used for a long time under high temperature and high humidity, the hard coating layer does not cause cracks, and the jitter value of the initial and endurance test is less than 10% of the excellent recording signal characteristics, and the distortion of the disc caused by the coating hardening. [Embodiment] The resin composition of the present invention contains a polyfunctional (fluorenyl) acrylate (A), an amino decanoic acid (meth) acrylate (B), and a photopolymerization initiator (C). The polyfunctional (meth) acrylate (A) contained in the resin composition of the present invention is in addition to the aforementioned amino phthalic acid acrylate (B) and the epoxy group described later in 10 323318 201211171 ( In addition to the methyl acrylate, any polyfunctional (fluorenyl) acrylate can be used without limitation. For example, the number of functional groups of the polyfunctional (fluorenyl) acrylate is usually from 2 to 6. It is preferably a 2- to 4-functional (meth) acrylate, more preferably a 2 to 3-functional (meth) acrylate. The preferred polyfunctional (fluorenyl) acrylate may, for example, be 1,6-hexanediol di(meth)acrylic acid (for example, Photomer-4017 manufactured by Cognis Japan Co., Ltd.), 1,4- Butanediol di(meth)acrylate (for example, FANCRYLFA-124AS manufactured by Hitachi Chemical Co., Ltd.), tripropylene glycol bis(indenyl)acrylate (for example, TPGDA manufactured by DAICEL-CYTEC Co., Ltd.), dipropylene glycol II (fluorenyl) acrylate (for example, Photomer-4226 manufactured by Cognis Japan Co., Ltd.), tricyclic tert-doped dimethanol bis(indenyl) acrylate (for example, KAYARADR-684 manufactured by Nippon Kayaku Co., Ltd.), Diol bis(indenyl) acrylate (for example, KAYARADNPGDA manufactured by Nippon Kayaku Co., Ltd.), pentaerythritol tris(fluorenyl) acrylate (for example, KAYARAD PET-30 manufactured by Nippon Kayaku Co., Ltd.), three Methylolpropane tri(meth)acrylate (for example, KAYARADTM PTA, manufactured by Nippon Kayaku Co., Ltd.), EO-modified glycerol tris(decyl) acrylate (preferably 1 to 4 mol E0 modified glycerol)曱基)丙An acid ester, for example, KAYARAD THE-330 manufactured by Nippon Kayaku Co., Ltd., P0 modified glycerol tris(meth) acrylate (preferably 1 to 3 mol P0 modified glycerol tris(mercapto) acrylate, For example, KAYARAD GPO-303 manufactured by Sakamoto Chemical Co., Ltd., neopentyltetrakis(methyl) acrylate (for example, SR295 manufactured by Sartomer Co., Ltd.), and the like. 11 323318 201211171 Further, in the present invention, a 2 to 4 polyfunctional (meth) acrylate having a carbon chain number of 4 to 12 and having 2 to 4 polyfunctional alcohols having a chain structure of a cyclic structure is preferred, and more preferably From the above-exemplified polyfunctional (meth) acrylate, in addition to tri-methanol-methanol-(methyl)-propyl acetoacetate, a 2- to 4-functional (meth) acrylate with a bond structure is compared. good. As a further preferred polyfunctional (meth) acrylate, 1,6-hexanediol di(meth)acrylate, tripropylene glycol di(decyl)acrylate, dipropylene glycol di(meth)acrylate may, for example, be mentioned. , pentaerythritol tris(fluorenyl) acrylate, tris-methyl propyl di(meth) acrylate, etc., the resin composition of the present invention preferably contains the group selected from the group At least one of them. Further, the polyfunctional (fluorenyl) acrylate (A) is preferably a polyfunctional (meth) acrylate having a range of (meth) acrylate equivalents. The (meth)acrylic acid equivalent is preferably from 85 to 160 g/eq. More preferably, it is 86 to 157g/eq. . When the (meth)acrylic group equivalent is too small, the shrinkage ratio at the time of curing becomes large, which is unsatisfactory because the initial warpage is large. On the other hand, when the (meth)acrylic acid group equivalent is too large, the resin becomes soft, and the difference in the rate of change of the elastic modulus due to the temperature of the hard coat layer and the light transmitting layer becomes large, and the hard coat layer is liable to cause cracks. Not good. Further, the cured product of the resin composition of the present invention containing a polyfunctional (fluorenyl) acrylate having the (indenyl) acetophenantic acid equivalent is from 25 ° C at room temperature to 85 ° C at a high temperature. The change in the modulus of elasticity is less varied, and the effect of the invention of the patent application can be achieved. Further, a cured product of the resin composition of the present invention containing the poly((meth)acrylic acid equivalent of the (meth)acrylic acid equivalent is used as a light transmitting layer, and 12 323318 201211171 is placed on a substrate, and stored. At any of high temperatures (5 〇 to 5 to 5 ° C), the amount of warpage can be suppressed to one. Here, the (meth)acrylic group equivalent represents the value of the molecular weight of the compound divided by the number of (meth)acrylonyl groups in the molecule (the number of functional groups). In addition, the term "(meth)acrylic group" used in the present specification uses the meaning of at least one of "acrylic group" or "methacrylic acid group", and the terms such as "acrylic acid ester" are also the same. Meaning use. In the resin composition of the present invention, the components (A) may be used alone or in combination of two or more. The content of the resin composition of the component (A) (the same expression as the total amount of the resin composition, the same meaning is expressed hereinafter) is usually 10 to 70% by weight, preferably 20 to 70% by weight, more preferably 25 to 50% by weight of 0 and 'relative to the total amount of the (meth) acrylate component contained in the resin composition of the present invention, more preferably the (meth)acrylic group equivalent is 85 to I60 g / eq. The bis (meth) acrylate is 60 to 100% by weight, preferably 80 to 1% by weight, and the other (fluorenyl) acrylate component is 〇 to 2% by weight. 〇% by weight. Further, in this case, the other (meth) acrylate component preferably has a (meth) acrylate equivalent weight of from 85 to 16 〇g/eq· of tri- to tetra (meth) acrylate (preferably three ( The case of thiol) acrylate). However, in this case, the ethyl decanoate (meth) acrylate (B) is an amino decyl acrylate obtained by modifying a polyfunctional alcohol as a polycaprolactone. Ethyl methacrylate (meth) acrylate is not included. 13 323318 201211171 In addition, when the component (A) is too small, the storage modulus E at 80 °C tends to be low, and when placed under high temperature and humidity, the light transmission layer tends to crack easily. . Further, when the amount is too large, the warpage of the substrate (the warpage of the substrate before the resin is applied and the difference in the warpage after the application of the cured resin: the amount of change in warpage) tends to increase. The urethane (mercapto) acrylate (B) contained in the resin composition of the present invention has a function of improving the mechanical properties of the optical disk to which the resin composition of the present invention is bonded. Specifically, it reduces the distortion and/or distortion generated during the hardening described above and the distortion of the aforementioned cured product (5〇 to 55 C) and/or cryopreservation (〇 to 5°C). The difference between the warpage before storage and the warpage after storage: the amount of change in warpage). Further, the amino(meth)acetate (methyl)propionate is the other (meth) acrylic acid, and can be maintained at a high temperature m; maintaining a high storage modulus. Amino acid (ethyl) acryl acid, polyisomeric group (: base, soil I acetonitrile (methyl) internal acid hydrazine (8) used in the synthesis of polyol (a) ' Two or more light bases can be used without particular limitation. For example, the following polyols can be mentioned. (1) New item l1>5~pentanediol, ethylene glycol, didiol, L4-butanol* , 6-hexanol, trimethylolpropane, neopentyl alcohol, tricyclic oxime 2 = double marriage methyl], cyclohexanone and other aliphatic multi-drugs are usually aliphatic aliphatics with a carbon number of 2 to 10. (1) The polyester polyol obtained by the reaction of a polyhydric alcohol 7(1) with a polybasic acid as described in (1) or (1). 14 323318 201211171 Further, as the polybasic acid, for example, succinic acid may be exemplified. , citric acid, hexafluoride, citric acid, hexanoic acid, azelaic acid, tetrahydro uric anhydride, etc. (iii) polyether polyol. For example, polyethylene glycol, polypropylene glycol or polytetrazine Poly-C2 such as diol «C4 alkyl diol, ethylene oxide modified bisphenol a, etc. Oxidation C2 to C3 alkyl bisphenol A. Among the above, as a polyol, from the elevator From the viewpoint of maintaining the high 80 C storage modulus, it is preferably a polyether polyol, and more preferably a C 2 to C 4 alkyl diol 'optimal polypropylene glycol. Polyester polyol or poly The number average molecular weight of the ether polyol is preferably from about 2 to about 8,000, more preferably from about 200 to about 3,000, and even more preferably from about 4 to about 2,000, and most preferably from about 600 to about 1,500. The polyisocyanate (b) used for the synthesis of the (mercapto) acrylate (B) is a compound having two or more isocyanate groups in the molecule, and for example, preferably has 2 to 3 isocyanates in the molecule. The polyisocyanate is more preferably a diisocyanate compound. For example, 'isophorone diisocyanate, hexamethylene diisocyanate, toluene diisocyanate, diphenyl phenyl diisocyanate or Diphenylphosphonyl-4,4,-diisocyanate, etc. wherein 'perfect is isophorone diisocyanate or toluene diisocyanate. As ethyl decanoate (mercapto) acrylate The hydroxy(methyl)propionate (c) ' used for the synthesis of the ester (β) is as long as it has a trans group and a (meth) acrylonitrile group in the molecule. The compound can be used without particular limitation. For example, '(meth)acrylic acid ethyl ester, (mercapto) propyl benzoate 323318 15 201211171 hydroxypropyl ester, hydroxybutyl (meth) acrylate, a mono(indenyl) acrylate of a C2 to C8 aliphatic diol such as mono(indenyl) methicone hexyl acrylate. The reaction system can be carried out, for example, as follows. (a), the polyisocyanate is mixed per 1 equivalent of the hydroxyl group to make the isocyanate group preferably 1. 1 to 2. 0 equivalent, reaction degree 25 to 9 CTC, preferably 5 to 刖. (:reaction, and the synthesis of amino acetoacetate oligo- oligo- lysed hydroxy(indenyl) acrylate (c) per 1 equivalent of isocyanate group The hydroxyl group is preferably used in an amount of from 1 to 1.5 equivalents at 70 to 9 Torr. The desired ethyl urethane (meth) acrylate can be obtained by a reaction of hydrazine. The catalyst can also be used for the purpose of shortening the reaction time. Further, a polymerization inhibitor or the like can be used, and it is also commercially available as UX-0937: polyether urethane acrylate (manufactured by Nippon Kayaku Co., Ltd.), etc. Amino ruthenate (曱) The molecular weight of the acrylate (B) is preferably from 400 to 10,000 Å, more preferably from 5 to 5,000, still more preferably from 600 to 2,500, and more preferably from 700 to 1 Å. Further, the amine decanoic acid The molecular weight of the ethyl acetate (meth) acrylate is a weight average molecular weight. In the resin composition of the present invention, the resin composition of the component (B) contains 5 to 80% by weight of the resin. 〇 to 7〇% by weight. Further, depending on the case, it is preferably 30 to 70% by weight, more preferably 35 to 7% by weight, 45 to 70% by weight. Less than 5% by weight 'The material having the target elastic modulus at 80 ° C is difficult to design. 'More than 80% by weight, the modulus of elasticity is too low. The total content of the component and the component (B) is a photocurable resin component contained in the resin composition from the viewpoint of obtaining a cured product having an elastic modulus of 50 to 200 MPa in 8 (rc 323318 16 201211171). The total amount of (hereinafter, also referred to as a (meth) acrylate component) is preferably 70% by weight or more, more preferably 80% by weight or more, and particularly preferably 90% by weight or more. The upper limit is up to % by weight. Further, the ratio of the total content of the components (A) and (B) to the total amount of the resin composition of the present invention is preferably from 8 to 99, and more preferably from 90 to 99% by weight. In one preferred embodiment of the present invention, the above polyfunctional (meth)acrylic acid vinegar is a polyfunctional (meth) propylene having the aforementioned (meth)acrylic acid group equivalent of 85 i. Sour vinegar, and it is combined with urethane acetate (a = = a combination of dilute vinegar containing 4' (four) in the present invention The rhyme composition of the towel (the total content of the methacrylate component, preferably 7G to _wt%, more preferably 80 to 100% by weight, 昜 尨 ^ ^ Ί 〇蚨 / 〇蚨 佳 series 90 to 100% by weight of the resin composition. More preferably, in the above preferred embodiment, the polyfunctional (fluorenyl) acrylic vinegar having a (meth)acrylic group equivalent of 85 to 16 Å is the following resin composition. : containing di(methyl)(tetra) acid, and containing at least 50% by weight, preferably 80 to just weight, based on the total amount of the (mercapto)acrylic acid brewing component in the resin composition of the present invention. %, more preferably a resin composition of 9 〇 to i (9)% by weight, in which case, amino acetoacetate (meth) acrylate vinegar (8) is used as a polycaprolactone modified polyfunctional alcohol as a polyol Aminoethyl phthalate (meth) acrylate other than the amine. Further, in the above preferred form, polyfunctional (methyl) 323318 17 201211171 can be (meth)acrylic acid: a better form of 'polyurethane vinegar, specifically exemplified by methyl) In the resin composition of the present invention, when the (meth) acrylate is used alone, when the (meth) acrylate is used, the amino decanoic acid = (meth) propylene is preferably: Polyol-based polyhexyl vinegar modified poly-alcohol polyol' is preferably selected from the group consisting of polyethylene glycol, polypropylene glycol and methyl ketone. B is a (meth)acrylic acid vinegar; more preferably, it is made by using aminoacetic acid ethyl acetate (meth) acrylic acid obtained by using polypropylene glycol. Further, it is preferred that the epoxy (indenyl) acrylate which is an optional (meth) acrylate component is not contained. The photopolymerization initiator (c) contained in the resin composition of the present invention is not particularly limited as long as it is a compound which can be photopolymerized by the ultraviolet ray of the acrylate compound. For example, 'hydroxycyclohexyl phenyl ketone (IRGACURE-184; manufactured by Ciba Specialty Chemicals), 2-pyridyl-2-mercapto-[4-(1-fluorenylvinyl) can be exemplified. Phenyl]propanol oligomer (〇NE-Rifined), l-[4-(2-hydroxyethoxy)-phenyl]-2-hydroxy-2-mercapto-1-propane-butanone (IRGACURE) -2959 ; Ciba refined system), 2-carbyl-l-{4-[4-(2~-carbyl-2-mercapto-propenyl)-benzoinyl]-phenyl b-2-yl Base-propane-i-_ (IRGACURE-127; Ciba refined), 2,2-dimethoxy-2-phenylacetophenone (IRGACURE-651; Ciba refined), 2- Hydroxy-2-mercapto-1-phenyl-18 323318 201211171 Propane-1-one (DAROCUR 1173; manufactured by Ciba Specialty Chemicals), 2-mercapto-l-[4-(indolylthio)phenyl] -2-(N-morpholinyl)propane-butanone (IRGACURE-907; manufactured by Ciba Specialty Chemicals), 2-benzyl-2-dimethylamino]_i-(4-(N-morpholine) Phenyl)-butyl-butan-1-yl, 2-chlorothioxanthone, 2,4-dimercaptothioxanthone, 2,4-diisopropylthiaxanone , isopropyl thioindene, 2, 4, 6-trimethyl benzhydryl diphenylphosphine oxide, double (2,. 4,6-trisyl adenyl) phenylphosphine oxide, bis(2,6-dimethoxybenzylphenanthryl)-2,4,4-trimethylpentylphosphine oxide, etc. . In the resin composition of the present invention, the components (C) may be used alone or in combination of two or more. The content of the resin composition of the ([) component is usually 0. 5 to 20% by weight, preferably 1 to 1% by weight. Here, the content is less than 0. When 5 wt% is irradiated, the active energy ray is insufficiently hardened. When it exceeds 20% by weight, the physical properties of the cured product are adversely affected. Further, each of the polyfunctional (meth) acrylate (A), the urethane (meth) acrylate (B), and (C) photopolymerization initiator of the resin composition of the present invention has a preferable content ratio The polyfunctional (meth) acrylate (Α) is 10 to 70% by weight, and the ethyl decyl acrylate (Β) is 20 to 70% by weight based on the total amount of the resin composition. And photopolymerization initiator (〇为〇. 5 to 20% by weight 'preferably 1 to 1% by weight, and a combination of a polyfunctional (fluorenyl) acrylate (hydrazine) and a urethane (mercapto) acrylate (Β) 80 to 99. 5% by weight, preferably 90 to 99% by weight. Further, an amine or the like which can be used as a photopolymerization initiation aid may be used in combination with the above photopolymerization initiator. The amines and the like which can be used may, for example, be benzoic acid, mono-methylaminoethyl ester, dimethylaminoacetophenone, p-dimethylaminobenzene 19 323318 201211171 ethyl citrate or two. Isoamyl methylaminobenzoate or the like. The photopolymerization initiation aid of the amine or the like may be omitted, and when it is used as needed, the content in the resin composition of the present invention is usually 005 005 to 5% by weight, preferably 0. 01 to 3 wt%. The resin composition of the present invention may be added with a rust inhibitor, an antioxidant, an organic solvent, a decane coupling agent, a polymerization inhibitor, a leveling agent, an antistatic agent, a surface lubricant, and a fluorescent whitening as needed. Additives such as a light stabilizer, a light stabilizer (for example, a hindered amine compound, etc.), a filler, and the like. The hindered amine compound is not particularly limited as long as it is a well-known one. As a specific example, for example, 12,2,6,6-pentamethyl-4-piperidyl alcohol, 2, 2, 6, 6 may be mentioned. - tetradecyl-4-piperidyl alcohol, 1,2,2,6,6-pentamethyl-4-piperidyl (meth)acrylic acid ester (ADEKA), LA -82) Wait. The resin composition of the present invention may contain an epoxy group (meth) acrylate or a monofunctional fluorenyl acrylate as an optional (mercapto) acrylic acid vinegar component, if necessary. In the present invention, it is usually also not contained, and the content thereof is less than 1% by weight, preferably 0 to 8% by weight, more preferably 5% to 5% by weight, based on the total amount of the resin composition of the present invention. . The epoxy group (mercapto) acrylate is usually a polyfunctional (fluorenyl) acrylate, but in the present invention, a polyfunctional (fluorenyl) acrylate which is not contained in the above (A) component. However, the optional (mercapto) acrylate component may be contained in the resin composition of the present invention as the case may be. The epoxy group (mercapto) acrylate can be used as long as it is obtained by reacting a epoxidized propyl ether type epoxy compound with (mercapto)acrylic acid. 20 323318 201211171 鬌 As a derivative of the thiopropyl ether type epoxy compound obtained by the use of the thiol (methyl) (tetra), it may, for example, be a bis(tetra) or a silk oxide derivative thereof - (a oxypropyl propyl group) (4), double F or its extended-based oxide adducts (di-epoxypropyl) hydrazine, hydrogenated double A or its octagonal oxide adducts (epoxypropyl-, hydrogenation double (4) bis(epoxypropyl) hydrazine, ethylene glycol bis(epoxypropyl) hydrazine, propylene glycol bis(epoxypropyl) fluorene, neopentyl glycol bis (epoxy) Propyl) hydrazine, butanediol bis(epoxypropyl) ether, hexanediol bis(epoxypropyl)ether, cyclohexanedimethanol bis(epoxypropyl), poly = diol di (ring) Oloxypropyl)ether, etc. The molecular weight of epoxy (indenyl) acetoacetate is preferably from 500 to loooo, more preferably from 7 to 1 Å. Epoxy (decyl) acrylate The epoxy propyl ether type epoxy compound is obtained by reacting (meth)acrylic acid with the following conditions: 1 equivalent to the epoxy group of the epoxypropyl fluorene type epoxy compound. Base) acrylic acid 0. 9 to 1. 5 moles, preferably in a ratio of 〇95 to hl moles. The reaction temperature is preferably from 8 Torr to 12 (rc, and the reaction time is from about 10 to 35 hours. To promote the reaction, for example, triphenylphosphine, 2,4,6-tris(dimethylamino hydrazine) is preferably used. a catalyst such as phenol (TAp), triethanolamine or tetraethylammonium chloride. Further, in the reaction, in the case of suppressing the polymerization inhibitor for polymerization, for example, p-methoxyphenol or mercaptohydrogen can also be used. Here, from the viewpoint of improving the mechanical strength and maintaining a high storage modulus of 8 〇〇 c, there is no problem in not using an epoxy group (mercapto)propionate. The composition is as described above, and may contain a monofunctional (fluorenyl) acrylate as needed, and may be a (meth) acrylate component other than the components (A) and (B), 323318 21 201211171. The methyl) acrylate may, for example, be phenoxyethyl (meth) acrylate, phenoxy polyethylene glycol (methyl) propionate or benzyl (meth) acrylate, ( Tetrahydrofurfuryl methacrylate, morpholine (mercapto) acrylate, phenyl epoxidized propyl (mercapto) acrylate (Methyl)acrylic acid 2-propyl propyl acrylate, ethoxy diethylene glycol (mercapto) acrylate, decyl bis (tripropylene glycol) (fluorenyl) acrylate, tricyclodecane ( Methyl) acrylate, isodecyl (meth) acrylate, dicyclopentadienyloxyethyl (meth) acrylate, dicyclopentenyl acrylate (for example, FANCRYLrtm FA manufactured by Hitachi Chemical Co., Ltd.) -511A), dicyclopentenyloxyethyl acrylate (for example, FANCRYLrtm FA-512A manufactured by 曰立化成工业股份有限公司), dicyclopentenyloxy methacrylate (for example, Hitachi Chemical Co., Ltd.) Company-made FANCRYLrtm FA-512M), dicyclopentyl acrylate (for example, FANCRYLRTM FA-513A manufactured by Hitachi Chemical Co., Ltd.), dicyclopentyl methacrylate (for example, manufactured by Hitachi Chemical Co., Ltd.) FANCRYLRTM FA-513M), 1-adamantyl acrylate (for example, Adamantate AA from Idemitsu Kosan Co., Ltd.), 2-mercapto-2-adamantyl acrylate (for example, Idemitsu Trading Co., Ltd.) Limited company Adamantate ΜΑ), C Acid 2-ethyl-2-metal sulphate (for example, AdamantateRTM 制 manufactured by Idemitsu Kosan Co., Ltd.), thioglycolic acid 1-adamantyl ester (for example, AdamantateRTM AM manufactured by Idemitsu Kosan Co., Ltd.) Ethylene oxide modified phenoxylated phosphoric acid (mercapto) acrylate, ethylene oxide modified butoxylated phosphoric acid (fluorenyl) acrylate and ethylene oxide modified octyl oxylated The acid (mercapto)acrylic acid g is equivalent. 22 323318 201211171 Furthermore, the above-mentioned superscript RTM is a registered trademark, and the following are synonymous. Further, the 1,2,2,6-pentamethyl-4-piperidyl acrylate of (meth)acrylic acid exemplified as the hindered amine is a monofunctional (meth) acrylate, but The specification is classified as a hindered amine and is not included in the monofunctional (fluorenyl) acrylate as an optional component. The monofunctional (meth) acrylate of any of the above (meth) acrylate components may be, for example, 0 to 20% by weight with respect to the total amount of the resin composition of the present invention. It is about 1% by weight, more preferably in the range of about 0 to 5% by weight 'but it is not required to be contained as shown in the examples. The resin composition of the present invention can be obtained by mixing and dissolving the components described above at a normal temperature to 80 ° C, and if necessary, it is also possible to remove impurities by filtration or the like. The resin composition of the present invention is preferably adjusted to have a viscosity of 25 C to a range of 30 to 200 OmPa · s in accordance with the coating property, and the viscosity is adjusted to 25 ° C to a viscosity of 500 to 500. L8〇〇mPa · s. Further, it is important that the resin composition of the present invention is prepared into a cured product of the resin composition at 8 (the storage modulus E of TC is in the range of 50 to 200 MPa. Thereby, the effects of the present invention described above can be achieved. Further, in the resin composition of the present invention, the cured product of the resin composition is one of the characteristics as compared with the difference in the storage modulus of 25 C and the storage modulus E' of 8 Å. For example, The storage modulus of the cured product of the resin composition of the present invention at 25 C is preferably in the range of 500 to 15 Å OMPa, more preferably in the range of 6 Å to 1000 MPa. Accordingly, the composition of the resin composition of the present invention is more than 323318. 23 201211171 The storage module of the best 25t is in the above range. When the storage modulus of the 25C is too low, the light can not be sufficiently hard when it is transmitted through the layer, and when it is too high, the warpage of the disc is hardened. Further, in the resin composition of the present invention, the ratio of the hardened matter to the storage modulus of 8{rc, the storage modulus of 25Ϊ, that is, the storage modulus of the memory, is /, 25 The value of the storage modulus of <t is better in the range of 〇5 to 0.20, and then better, 〇. 05 to 〇. 15 or so, the best system 〇7 to 〇. 15 left. The resin composition of the present invention can be cured by irradiation with ultraviolet rays. The cured product has the above-described storage modulus and high transparency, and the transmittance of light having a wavelength of about 4 〇〇 nm used for a Blu-ray disc or the like is high, for example, in a cured film having a thickness of 100 Å, a light having a wavelength of 405 nm is transmitted. The rate can be more than 85%, preferably more than 9%. The preferred embodiment of the resin composition of the present invention described above is exemplified by (I) an ultraviolet curable resin composition for an optical disk having an organic pigment layer (hereinafter referred to as a resin composition), and a resin composition. The total amount, containing 10 to 70% by weight of polyfunctional (fluorenyl) acrylate (A) and 5 to 80% by weight of urethane (meth) acrylate (B) and photopolymerization initiator (C) 0. 5 to 20% by weight of the resin composition, (1) Poly(indenyl) acrylate (A) (indenyl) acrylate group is 85 g / eq. to 160 g / eq., (2) The cured film of the resin composition has a storage modulus E at 80 ° C, in the range of 323318 24 201211171 50 to 200 MPa. (II) The resin composition described in the above (I), which contains 20 to 70% by weight of polyfunctional (meth)acrylic acid vinegar (A) and ethyl methacrylate (B) acrylate (B) 20 The total content of the (A) component and the component is 70% by weight, based on the total amount of the (fluorene) acrylate component contained in the resin composition {(A) component, (B) component, and optionally (曱) The total content of the monofunctional (meth) acrylate or/and epoxy (meth) acrylate of the acrylate component is at least 80% by weight. (ΠΙ) The resin composition described in the above (I) or (π), wherein the Dolce t* (methyl) propionate (A) is derived from 1,6-hexanediol di(decyl) Bismuth acrylate, 1,4-butanediol di(meth) acrylate, tripropylene glycol di(meth) acrylate, dipropylene glycol di(meth) acrylate, tricycloanthracene dimethanol Acrylate, neopentyl glycol di(meth)acrylate, pentaerythritol tri(meth)acrylate, trishydroxypropylpropane tris(decyl)acrylate, E-modified triglyceride At least one selected from the group consisting of acrylate, P0 modified glycerol tri(meth) acrylate, and pentaerythritol tetrakis(mercapto) acrylate. (IV) The resin composition according to the above (A), wherein the polyfunctional (meth) acrylate (A) is a polyfunctional group other than tricyclodecane dimethyl acrylate (meth) acrylate )Acrylate. (V) The resin composition of the above (111), wherein the polyfunctional (meth) acrylate (A) is derived from 1,6-hexanediol bis(indenyl) acrylate or tripropanol a group of bis(indenyl)acrylate, dipropylene glycol di(meth)acrylate, pentaerythritol di(meth)acrylate, and trishydroxypropylpropane tris(meth)acrylic acid 323318 25 201211171 ester At least one of the groups selected. (VI) The resin composition according to any one of the above (1), wherein the 'amino acetate (mercapto) acrylate (8) is at least a polyester polyol or a poly-polyol The reactant obtained by reacting with a polyisocyanate is reacted with a hydroxyl group-containing (meth) acrylate to obtain an urethane (mercapto) acrylate having a molecular weight of 400 to 10,000. (VII) The resin composition of the above (v I), wherein the polyfunctional (fluorenyl) acrylate (A) is a single 1,6-hexanediol di(meth)acrylic acid hydrazine Ethyl decyl acrylate (B) is an amino decanoic acid ethyl ester (meth) acrylate other than an amine decyl decanoate containing a lactone structure, and It does not contain an epoxy (meth) acrylate as an optional (fluorenyl) acrylate component. (VIII) A resin composition as described in the above (VI), wherein the urethane is a polyethylene glycol, a polypropylene glycol, and a polytetramethylene glycol. a reaction product obtained by reacting a polyether polyol selected from the group with isophorone diisocyanate or decylphenyl diisocyanate, and reacting with a (meth) acrylate containing a trans group to obtain a molecular weight It is an alkyl decanoate (mercapto) acrylate of 400 to 10,000. (IX) The resin composition described in any one of the above (I) or (V111) wherein the polyfunctional (meth) acrylate (A) is bis(indenyl)propionate alone or bis(quinone) a acrylate and a tris-hexa(indenyl)propionate, which are at least 50% by weight based on the total amount of the (fluorenyl) acrylate component in the resin composition. (Methyl)acrylic acid vinegar, but in this case, ethyl decyl acrylate (B) is obtained by modifying polycaprolactone to 26,323,318 201211171 functional alcohols as polyols. Ethyl urethane (meth) acrylate (other than ethyl urethane (meth) acrylate). The olefinic acid ester (X) is a resin composition as described in (IX) above, wherein the content of the monoacrylate is 7 〇 to 1% by weight, preferably fluorenyl) %, more preferably 90 to 1% by weight. The optical disk hardening type resin composition as described in any one of the above-mentioned (1), wherein the urethane (, , ' (8) is made of polyethylene glycol or poly a polyether polyol selected from a diol and a polytetramethylene glycol T oleic acid sulfonic acid and isophorone diisocyanate or diisocyanate, the reactants to be obtained in the reaction, and the hydroxyl group-containing Ethyl methacrylate (meth) acrylate from polyacrylate (methyl acrylate) (A) (fluorenyl) acrylate equivalent: 85 g / eq. to i6 〇 g / eq ^ olefin The total amount of the content of the acrylic acid vinegar 'epoxy (mercapto) acryl vinegar is from 0 to less than 1% by weight. Composition (XII) The organic matter described in any one of the above (I) or (XI) The ultraviolet curable resin composition of the optical layer of the pigment layer, wherein the cured film of the ultraviolet curable resin composition for the optical disc has a storage modulus of 5 〇〇 to 1500 MPa at 25 ° C. (XIII) The above (I) or (XII) The ultraviolet curable resin composition for an optical disk having an organic pigment layer according to any one of the preceding claims, wherein the optical disk is ultraviolet curable The ratio of the storage modulus of the fat composition to the storage modulus at 25 ° C is 〇5 to 〇.20. The resin composition of the present invention can be hardened by the resin of the invention by irradiation of ultraviolet rays. The resin composition of the present invention is used as a light-transmissive layer (light-transmitting layer) of the cured resin of the present invention described above as a light-transmitting layer as a light-transmitting layer as described below. The resin composition of the present invention. The coating agent for the light-transmitting layer as the incident side of the laser can be suitably used. Specifically, the method is such that the thickness of the film is from the 丨 to the foot m by any method (for example, the coating method (spin (10) ting), 2P Method, roller coating method, etc.), the composition is applied to the optical disk substrate. After coating, ultraviolet light is emitted from one side or double side to near ultraviolet light (near wavelength 2 〇〇 to 4 〇〇 nm). The film thickness after hardening is almost corresponding to the thickness of the coating film, and is about i to about 2. The irradiation amount is preferably about 50 to 1500 mJ/cm 2 , and particularly preferably about 1 to 1000 mJ/cm 2 . Irradiated by ultraviolet light to near ultraviolet light The lamp is irradiated with ultraviolet ultraviolet light, that is, the light source is not required. For example, a low pressure, high pressure or ultra high pressure mercury lamp, a metal tooth lamp, a (pulse) xenon lamp, or an electrodeless lamp, etc. may be mentioned. The storage modulus E of the cured product of the composition is measured in accordance with the dynamic viscoelasticity measurement method of JIS K 7244-5, that is, using a Fusion lamp D bulb, the integrated light amount of 1 J/cm 2 is hardened to become a length. A sample piece having a size of 5 cm, a width of 1 cm, and a thickness of 1 mm was measured by a viscoelastic device DMS6100 manufactured by SII NanoTechnology Inc. The measurement was carried out in a bending mode, and the measurement was carried out in the range of -50 ° C to 150 ° C under the conditions of an amplitude load of 10 mN, a frequency of 10 Hz, and a temperature increase rate of 2 ° C /min. The resin composition of the present invention can be used for the formation of a light-transmitting layer (resin layer) formed on a recording layer or an interface layer. The light transmission layer (resin layer) system 28 323318 201211171 may be composed of one layer of the same composition or a plurality of layers of two or more layers having different compositions. However, in the case where the light transmission layer is composed of a plurality of resin layers, the production of the disk is inefficient, because the production speed, the yield, and the cost of the production device become high, and the light transmission layer is preferably the same composition. One layer is composed. The resin composition of the present invention can be used as a light-transmitting layer for either a single layer or a plurality of layers, and is suitable as a light-transmitting layer for a recording layer or an interface layer, which is particularly suitable for a light-transmitting layer of one layer. That is, when the resin composition of the present invention is used, even in the case of using one of the above-mentioned layers of the same composition, the hard coat layer does not have cracks after the environmental test, and a good signal can be obtained at the time of recording and after the environmental test. characteristic. Accordingly, it is particularly useful for a light transmissive layer having a layer structure. The resin composition of the present invention is suitably used as an optical disk using an organic pigment layer (hereinafter referred to as an organic dye recording layer) as a recording layer. The material of the organic dye recording layer must be sensitive to the wavelength of the laser light used for recording. Further, the material of the organic dye recording layer is required to have a change in refractive index due to a physical change or a chemical change of the irradiation of the laser light. Therefore, as the material of the organic dye recording layer, for example, cyanine, oxonium (〇X〇n〇1) dye, azo dye, phthalocyanine pigment, or violet pigment can be used. These organic materials are, for example, a mixed solution obtained by mixing with a solvent such as Gellosolve acetate or tetrafluoropropanol, and are spin-coated to form an organic dye recording layer. The film thickness of the organic dye recording layer is preferably 15 nm or more and 25 nm or less. The interface layer is a solvent for preventing hard diffusion of the dye contained in the organic pigment layer to the light-transmitting layer and the light-permeable layer during film formation of the light-transmitting layer. 323318 29 201211171 The function of the mixing phenomenon of the organic pigment layer. The material constituting the interface layer may, for example, be an oxygen cut, especially an oxide such as dioxate and zinc oxide, an oxidized crystal, or an oxidized epoxide, a zinc sulfide, a sulfide of a sulphide, a nitride such as a nitrogen cut, a carbon (IV), an oxide and a mixture of sulfur, a mixture of dioxin and sulphide, and an interface layer of oxidized material 1 is formed by a method such as hybridization. The resin composition of the present invention is suitable for a light-transmitting layer composed of a single layer as described above. The transmission layer is composed of a first resin layer formed on the recording layer or the interface layer, and a second resin layer formed on the other side of the recording layer or the interface layer side from the first resin layer, that is, When the light transmission layer is composed of two layers having different compositions, the first resin layer and/or the second resin layer may be used. In this case, the thickness of the first resin layer is usually from 1 μm to 50, preferably. 5/zra to 40//m, more preferably 10/zm to 30/zra. Further, the thickness of the second resin layer is usually 5 〇em to loom, preferably 60; czm to 95/zm, The best is 7〇em to 90am. On the other hand, when the light transmission layer is composed of one layer, the thickness of the resin layer It is usually 70^111 to 100/zm, preferably 80/zm to 95/zm. The light transmissive layer using the resin composition of the present invention is preferably disposed adjacent to the organic dye recording film or the interface layer. The light-transmitting layer using the resin composition of the present invention is provided in direct contact with the organic dye recording film or the interface layer, whereby good recording characteristics can be obtained before and after the durability test. The light-transmitting layer of the resin composition of the invention is formed as a layer of the above, and even if a hard coat layer is provided on the light-transmitting layer, cracks can be prevented from occurring in the hard coat layer due to the long-term test. When the physical strength of the light-transmitting layer formed by the resin composition is weak, the surface of the light-transmitting layer may be subjected to a hard coat treatment as needed. As described above, by having an organic dye recording film or an organic pigment recording film and Applying the resin composition of the present invention to the organic dye recording film of the optical disk substrate of the interface layer or the interface layer to harden it to form a light transmitting layer, and the light is needed as needed The optical disk of the present invention can be obtained by providing a hard coat layer on the layer. (Examples) Hereinafter, the present invention will be more specifically described by way of examples, but the present invention is not limited to the examples. The compositions shown in Table 1 were prepared by modulating the ultraviolet curable resin compositions of Examples 1 to 4 and Comparative Examples 1 to 2. 31 323318 201211171 [Table 1] Resin Composition and Evaluation Results Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative example polyfunctional (fluorenyl) acrylate (A) A-1 33 33 26 A-2 37 40 A-3 40 A~4 3 7 14 Amino decanoic acid ethyl ester (B) UA-1 62 55 55 55 55 55 Photopolymerization initiator (C) C-1 4 4 4 4 4 4 Light stabilizer (D) D-1 1 1 1 1 1 1 Storage mold at 25°C Number (MPa) 660 980 720 1380 - Storage modulus at 80 °C (MPa) 75 55 51 196 240 31 Initial warpage at the initial distortion (degrees) -0.8 -0.7 ~0.5 -1.4 -1.6 -0.4 〇〇X 记录 Recording signal characteristics before and after the endurance test. Jitter value before the endurance test (%) 6.5 6.4 6.6 7 6.9 6.8 Judgment〇〇埴 埴 〇〇〇〇 (%) after endurance test 8.9 8.4 8.8 9.3 9.4 - Judgment 〇〇〇〇〇 X Crack evaluation After the endurance test, the presence or absence of cracks in the endless test is no more than nothing. The components are as follows. A-1. 1,6-hexanediol diacrylate vinegar, Photomer-4017 (acrylic acid equivalent: 127 g/eq) manufactured by Cognis Japan Co., Ltd. A-2: tripropylene glycol diacrylate, TPGDA (manufactured by DAICEL_CYTEC Co., Ltd.) Acrylic acid equivalent: l5〇g/eq) A-3. Dipropylene glycol diacrylate, c〇gnis Japan limited stock 32 323318 201211171 Company Photomer-4226 (pro-glycolic acid equivalent: 12lg/eq) A-4 : pentaerythritol triacrylate, KAYARAD PET-30C acrylic base equivalent: 87g/eq) UA-1 · polypropylene glycol (molecular weight 1000), toluene diisocyanate, 2-hydroxy acrylate The three components of the ethyl ester are ethyl phthalate acrylate C-1 obtained by the reaction of Mohr ratio 1: 2: 2 as described above: 1-hydroxycyclohexyl phenyl ketone, Ciba refined product IRGACURE-184 D-1 manufactured by the company: H 2, 6, 6-pentamethyl-4-piperidyl ester of methacrylic acid, LA-82 manufactured by Asahi Kasei Co., Ltd. Storage modulus E of 80 C of the present invention The value of the storage modulus at 25 ° C was determined according to the dynamic viscoelasticity measurement method of JIS K 7244-5. That is, using a Fusion lamp, a bulb, and a total amount of light of 1 J/cm2, a sample piece hardened to a length of 5 cm, a width of 1 cm, and a thickness of 1 mm is produced, and the viscoelastic device DMS6100 manufactured by Seiko Yoshiishi Electronic Technology Co., Ltd. And the measurement is performed. The measurement was performed in a bending mode, with amplitude load, frequency, and temperature rise. The condition of (:/min, the measurement was carried out in the range of the magical grasping. The blue light disc with the pigment recording layer was produced using the obtained scratching object of the present invention, and the characteristics were evaluated. The production of the blue light disc. The method is to have a diameter of 12 cm and a thickness h - of the guiding groove of the guiding groove, and to form a reflecting layer. Thereafter, the azo pigment is dissolved in the chat (four gas C 323318 33) 201211171 Alcohol) The solvent solution of the solvent was applied by spin coating, and the dye recording layer was formed by drying at 8 rc (3 rc). Further, ZnS_Si〇2 (mole ratio 8 〇: 2 〇) was used. The interface layer is formed by sputtering at a thickness of 15 nm to form a blue light-emitting substrate. 2. The interface layer of the Blu-ray optical disk substrate is placed on the rotating table upward, and a circular cap is applied to cover the inner diameter. 1·5 mm, followed by k for the resin composition of the present invention on the lid of the center portion of 2. 〇g 3. Rotating and coating the viscosity of the resin composition of the present invention at a speed ranging from 7 rpm to 120 rpm 4 seconds to 7 seconds, each coating film thickness is applied in a manner of 95/zm At the end of the spin coating, the mixture was irradiated twice with a xenon flash lamp, and hardened to the extent of no surface fluidity. 4. The resin composition of the present invention was completely cured by irradiation with a high pressure mercury lamp at 4 〇〇mJ/cm 2 for 3 seconds from above. 5. The hardened resin composition of the present invention is placed on the rotary table upward, and subjected to a round lid treatment to cover the inner diameter of u. 5 mm, and then provided with a Blu-ray disc manufactured by HOD-3950BC Nippon Kayaku Co., Ltd. The resin for hard coating was placed on a lid of 3.0 g of the center portion. 6. The coating was spin-coated at a speed of 4000 MPa·ριη for 4 seconds to 7 seconds, and the coating film thickness was 5//m. Thereafter, a high-pressure mercury lamp was used, and the blue light disc of the present invention was produced by irradiating the upper side at 400 ijiJ/cm 2 for 3 seconds to completely harden the jj〇d_395〇b. (a) The value of the warpage of the initial warped disc is the mechanical characteristics of the optical disc. The measurement apparatus was manufactured by Argus Blue Or. Schwab Co., Ltd.). The warpage value showed a significant difference as it became the edge of the circle 323318 34 201211171, so it was evaluated with a value close to the peripheral end radius of 58 mm. The initial warpage in the table is calculated by the following formula. Initial distortion = warpage of the coated substrate - warpage of the substrate before coating The unit of distortion is expressed in degrees. The judgment was performed on the basis of the following criteria. 〇 initial warping >-1.5 X initial warping $-1. 5 (b) Recording signal characteristics before and after the durability test of the Blu-ray disc The optical disc of the present invention and the optical disc of the comparative example were placed at 8 〇〇 C, 85% RH Leave it for 1 hour in the environment. The recording signal characteristics (jitter value) of the Blu-ray disc before and after the durability test were measured using a Blu-ray disc data signal measuring device PU_1TEC INDUSTRIAL Co., Ltd., DU_1〇〇〇, and evaluated by the following criteria. The jitter value is one of the electrical signals of the optical disc. The high value indicates that the signal data of the Blu-ray disc is degraded, and the reading and writing of the data becomes difficult more than 1%. Further, it was measured to have a value of a radius of 48 mm. 0%。 The evaluation of the jitter value 〇 jitter value of less than 10. 0%. x Jitter value 10. 〇% or more. Or can not be measured. (c) Evaluation of cracks After the endurance test, the presence or absence of cracks in the hard coat layer of the optical disk was visually confirmed. From the results of Table 1, it was confirmed that the resin compositions of the present invention of Examples 1 to 4 obtained good recording signal characteristics before and after the durability test, and the cracks of the hard coat layer were not generated and the warpage at the time of coating hardening was changed. The amount is also small. On the other hand, 8 (the storage modulus E of TC, the comparative example 1 having a higher specific range has a larger amount of warpage on the base 35 323318 201211171, and the storage modulus e of 80 ° C is smaller than a specific range. In Comparative Example 2, the hard coat layer was cracked in the durability test, and it was impossible to measure the recording signal characteristics. (Industrial Applicability) The resin composition of the present invention is suitable for forming light transmission through a disc having an organic dye recording layer. a layer in which a resin composition of the present invention is applied to a layer adjacent to an organic dye recording layer or an interface layer of a disc substrate having an organic dye recording layer to form a light transmissive layer, thereby forming a resin composition The warpage of the optical disk substrate during coating hardening is small, the initial jitter value is as low as 7% or less, and the jitter value is less than 10% after the endurance test under high temperature and high humidity, and any of the initial and endurance tests. The recording signal characteristics are excellent, and the hard coating system formed on the light transmission layer does not cause cracks or the like after the endurance test. The resin composition of the present invention has an organic composition. Based resin composition through the forming layer is very useful industrially DVD optical element of the record layer. Brief Description of the drawings [Yi] The main reference numerals DESCRIPTION None 36,323,318