201203238 六、發明說明： 【發明所屬之技術領域】 本發明係有關於具有有機色素記錄層之光碟以及對其 有用的紫外線硬化型樹脂組成物。 、 【先前技術】 目前’作為實用化的光碟記錄媒體，有在l 2mm聚碳 酸醋基板上積層由記錄層、反射層、紫外線硬化型樹脂所 成的保護層的CD-R、CD-RW，與將〇.6mra聚碳酸酯基板， 與具有記錄層與反射層的〇. 6mm聚碳酸酯基板以紫外線硬 化型樹脂貼合的 DVD-R、DVD+R、DVD-RW、DVD+RW、DVD-RAM 等。 近年來，約為單層型DVD五倍記錄容量的藍光光碟 (BD R)上市。藍光光碟舉一例為在1. 1則^透明或是不透明 的塑膠製基板上形成反射層、記錄層以及界面層（又稱為介 電體層），接著在界面層上積層約〇. lmm透光層（又稱為覆 蓋層）之構造’透過透光層而記錄/播放之碟片。記錄層使 用有機色素或無機化合物而界面層使用透光性的無機化合 物°另外，使用紫外線硬化型樹脂的硬化物層作為透光層。 藍光光碟具有包含有機色素的記錄層，利用雷射光照 射在記錄層’經由有機色素的體積變化造成之變形進行記 錄。以辅助色素的體積變化以獲得更佳的記錄信號特性（例 如抖動（jitter)特性）為目的，已提出以硬化性樹脂形成透 生覆蓋層’與記錄層面對的界面區域的彈性率在25。(：為 4〇MPa以下為特徵之光情報記錄媒體（專利文獻1)，與在有 4 322746 201203238 機色素的記錄層上’具有在25°C的彈性率在34至94MPa 的樹脂硬化物層的光情報記錄媒體（專利文獻2)。但是這 些文獻完全沒有揭示何種組成之樹脂組成物的硬化物層才 可達成此等彈性率。 另外，在溫度80°C/相對濕度80%RH環境下放置100 小時進行環境試驗’以作為前述光碟記錄媒體之信賴性評 估指標。為了此環境試驗前後記錄信號的劣化程度在預定 的範圍内，已提出形成硬化性樹脂之硬化物層的技術，硬 化物層在界面層上5°C與55。(：的貯藏彈性率都在lOOMPa以 下’且5°C之貯藏彈性率與55〇C之貯藏彈性率的比在10以 下’該硬化性樹脂含有作為主成分的可撓性胺基甲酸酯丙 烯酸S旨、作為稀釋劑之單官能基丙烯酸酯，或是含有作為 主成分的胺基甲酸酯丙烯酸酯以及作為稀釋劑之單官能基 丙稀酸醋與多官能基丙烯酸酯（專利文獻3)。但是此文獻 如以上所示，只提出主成分為胺基曱酸酯丙烯酸酯、稀釋 劑為單官能基丙烯酸酯或是併用單官能基丙烯酸酯與多官 能基丙烯酸酯。並沒有提出具體的成分組成。 [先前技術文獻] [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） 5 322746 201203238 本發明係對於含有有機色素記錄層之光碟，提供能賦 予優異的記錄信號特性以及耐久性之紫外線硬化型樹脂組 成物為目的。 (解決課題之方法） 本發明者為了解決前述問題而不斷努力研究的結果， 發現含有具特定構造之（曱基）丙烯酸酯的紫外線硬化樹脂 組成物，其於含有有機色素記錄層的光碟中，顯示優秀的 記錄信號特性以及耐久性，從而完成本發明。 接著，本發明係關於下述的（1)至（32)項。 (1) 一種光碟，係於有機色素記錄層上具有界面層，在 此界面層上具有紫外線硬化樹脂組成物（以下簡稱樹脂組 成物）之硬化物層，該樹脂組成物含有（A)具有下述式（1) 所表示的構造之（曱基）丙烯酸酯（但胺基曱酸酯（曱基）丙 烯酸酯除外） ——c(ch2)5o—— II Jn 0 (1) (式中，η代表1至10之整數） 以及（B)光聚合起始劑。 (2) 上述（1)記載之光碟，其中，具有式（1)所表示的構 造之（曱基）丙烯酸酯（A)是選自由己内酯改質（甲基）丙烯 酸羥乙酯、己内酯改質（曱基）丙烯酸羥丁酯、己内酯改質 羥基三甲基乙酸新戊二醇二（甲基）丙烯酸酯、己内酯改質 三（丙烯醯氧基乙基）三聚異氰酸酯以及己内酯改質二季戊 6 322746 201203238 四醇六（曱基）丙烯酸酯所成群組中之至少一種。 (3) 上述（1)、（2)記載之光碟，其中，前述樹脂組成物 為復含有（A)以外之（曱基）丙烯酸酯（C)的紫外線硬化型樹 脂組成物。 (4) 上述（1)至（3)的任一項記載之光碟，其含有對於前 述樹脂組成物全體為20至95重量％的具有式（1)所表示構 造之（曱基）丙烯酸酯（A)。 (5) 上述（3)或（4)記載之光碟，其中，前述（甲基）丙烯 酸酯（C)是選自由：聚酯多元醇或聚醚多元醇，與聚異氰酸 酯及丙烯酸-2-羥乙酯之反應物胺基甲酸酯丙烯酸酯，以及 聚環氧乙烷改質雙酚A型二丙烯酸酯所成群組中之至少一 種。 (6) 上述（3)或（4)中記載之光碟中，其含有由下述（I) 群的（曱基）丙烯酸酯單體（c-3a)以及下述（II)群的（甲基） 丙烯酸酯單體（c-3b)所成群組中選出之至少一種作為前述 (曱基）丙烯酸酯（C)。 (I) 群（c-3a): (i) (曱基）丙烯酸C5至C18烷基酯或是碳數7至18烷 基二醇二（甲基）丙烯酸酯； (ii) 環氧丙烷改質之單或二（曱基）丙烯酸酯； (iii) 聚環氧乙烷改質雙酚A型二（曱基）丙烯酸酯； (iv) 聚環氧乙烧改質苯紛（phenol)丙豨酸酯；或 (v) 具有聚伸四亞甲基二醇構造的（曱基）丙烯酸酯； (II) 群（c-3b): 7 322746 201203238 (曱基）丙烯酸二環戊烯氧乙基酯（或（曱基）丙烯酸二環戊 二烯氧乙基酯）、1，6-己二醇二（曱基）丙烯酸酯、二丙二醇 二（曱基）丙烯酸酯、三丙二醇二（曱基）丙烯酸酯。 (7) 上述（6)記載之光碟，其含有上述（I)群的（曱基） 丙烯酸酯單體（c-3a)作為前述（曱基）丙烯酸酯（C)。 (8) 上述（7)記載之光碟，其含有（甲基）丙烯酸C5至 C18烷基酯作為上述（I)群的（曱基）丙烯酸酯單體（c-3a)。 (9) 上述（6)記載之光碟，其含有上述（II)群的（曱基） 丙烯酸酯單體（c-3b)作為前述（曱基）丙烯酸酯（C)。 (10) 上述（3)至（9)中任一項記載之光碟，其含有胺基 甲酸酯丙烯酸酯（C_2)作為前述（曱基）丙烯酸酯（C)。 (11) 上述（10)記載之光碟，其中，前述胺基甲酸酯（曱 基）丙烯酸酯（C-2)係由聚C2至C6伸烷二醇、異佛爾酮二 異氰酸酯與（曱基）丙烯酸羥基C2至C4烷酯反應而得的胺 基曱酸酯（曱基）丙烯酸酯。 (12) 上述（1)至（11)中任一項記載之光碟，其中，前述 樹脂組成物為復含有受阻胺類化合物（D)的樹脂組成物。 (13) —種光碟的製造方法，至少包含下述步驟：於有 機色素記錄層上具有界面層之光碟基板的界面層上塗佈含 有（A)具下述式（1)所示構造之（曱基）丙烯酸酯 ——c(ch2)5o—— II Jn 0 (1) (式中，η代表1至10之整數） 8 322746 201203238 及 (B)光聚合起始劑的紫外線硬化型樹脂組成物，接著以活性 月匕莖線照射該塗佈膜以形成硬化物層。 (14) 上述（13)記載之光碟的製造方法中，紫外線硬化 型樹脂組成物為復含有（A)以外之（曱基）丙稀酸酯（C)的紫 外線硬化型樹脂組成物。 (15) —種光碟用紫外線硬化型樹脂組成物’其含有（A) 具下述式（1)構造之（甲基）丙烯酸酯（但是胺基甲酸酯丙烯 酸酯除外） 4 —C(CH2)s〇— II jn 0 (1) (式中η代表1至ι〇之整數） 與（B)光聚合起始劑。 (16) 上述（15)記載之光碟用紫外線硬化塑樹脂組成 物，其具有式（1)所示構造之（曱基）丙烯酸酯（A)是選自由 己内酯改質（曱基）丙烯酸羥乙酯、己内酯改質（甲基）丙烯 酸羥丁酯、已内酯改質經三曱基乙酸新戊二醇二丙稀酸 酯、己内酯改質三（丙烯醯氧基乙基）三聚異氰酸酯以及己 内酯改質二季戊四醇六（曱基）丙烯酸酯所成群組中之至少 一種。 (17) 上述（15)或（16)記載之光碟用紫外線硬化«樹脂 組成物復含有上述（A)以外之（曱基）丙烯酸酯（C)。 (18) 上述（15)至（17)任一項記載之光碟用紫外線硬化 322746 9 201203238 型樹脂組成物’其含有對於前述樹脂組成物全體為20至 95重量％的式（1)所表示構造的（曱基）丙烯酸酯（A)。 (19) 上述（π)或（18)記載之光碟用紫外線硬化型樹脂 組成物’其中前述之（甲基）丙烯酸酯是選自由聚酯多元 醇或聚醚多元醇，與聚異氰酸酯以及丙烯酸-2-羥乙酯之反 應物胺基甲酸酯丙稀酸酯及聚環氧乙烧改質雙紛A型二丙 稀酸酯所成群組中之至少一種。 (20) 上述（π)至（19)任一項記載之光碟用紫外線硬化 型樹脂組成物，其含有選自由下述（1)群的（甲基）丙烯酸酯 單體（c-3a)以及下述（π)群的（曱基）丙烯酸酯單體（c_3b) 所成群組中之至少一種作為前述之（甲基）丙烯酸酯（c) (I) 群（c-3a): (ι)(甲基）丙烯酸C5至C18烷酯或是碳數7至18伸烷 基一醇二（曱基）丙烯酸g旨； (ii) 環氧丙烷改質之單或二（甲基）丙烯酸酯； (iii) 聚環氧乙烷改質雙酚A型二（曱基）丙烯酸酯； (iv) 聚環氧乙烷改質苯酚丙烯酸酯； (v) 具有聚四亞甲基二醇構造的（甲基）丙烯酸酯； (II) 群(c-3b): (甲基）丙稀酸二環戊婦氧乙基酯（或（甲基）丙稀酸二環戊 一稀氧乙基S曰）、1，6-己一醇二（曱基）丙稀酸g旨、二丙二醇 二（甲基）丙烯酸酯或三丙二醇二（甲基）丙烯酸酯。 (21) 上述（20)記載之光碟用紫外線硬化型樹脂組成 物，其含有上述（I)群的（甲基）丙烯酸酯單體（c_3a；)作為前 322746 10 201203238 述之（曱基）丙烯酸自旨（c)。 (22) 上述（21)記載之光碟用紫外線硬化型樹脂組成 物，其含有（曱基）丙烯酸C5至C18烷酯作為前述（I)群的 (甲基）丙烯酸酯單體（c-3a)。 (23) 上述（21)或（22)記載之光碟用紫外線硬化型樹脂 組成物，其中前述（I)群的（甲基）丙烯酸酯單體（c-3a)的含 量對於樹脂組成物的總量為20至60重量°/〇。 (24) 上述（20)至（23)中任一項記載之光碟用紫外線硬 化型樹脂組成物，其含有上述（II)群的（曱基）丙烯酸酯單 體（c-3b)作為前述之（甲基）丙烯酸酯（C)。 (25) 上述（17)至（24)中任一項記載之光碟用紫外線硬 化型樹脂組成物，其含有胺基甲酸酯（曱基）丙烯酸酯（C-2) 作為前述之（曱基）丙稀酸醋（C)。 (26) 上述（25)記載之光碟用紫外線硬化型樹脂組成 物，其中該胺基曱酸酯（甲基）丙烯酸酯（C-2)係為聚C2至 C6伸烷基二醇、異佛爾酮二異氰酸酯與（曱基）丙烯酸羥基 C2至C4烷酯反應而得的胺基曱酸酯（甲基）丙烯酸酯。 (27) 上述（17)至（26)中任一項記載之光碟用紫外線硬 化型樹脂組成物，其含有選自由（曱基）丙烯酸C5至C18烷 酯、聚環氧乙烷5至15莫耳％改質雙酚A型二（曱基）丙烯 酸酯、（曱基）丙烯酸二環戊二烯氧乙基酯、聚丙二醇二（甲 基）丙烯酸酯所成群組中之至少一種作為（C)的成分，而其 含有量對於（C)成分的總量為50%至100%。 (28) 上述（17)至（27)中任一項記載之光碟用紫外線硬 11 322746 201203238 化型樹脂組成物’其含有（A)成分，及選自由胺基甲酸酯（甲 基）丙烯酸酯（C-2)、前述（I)群的（甲基）丙烯酸酯單體 (c-3a)以及前述（1丨）群的（甲基）丙烯酸酯單體（c-3b)所成 群組中之至少一種作為前述（甲基）丙烯酸酯（C)，其中（A) 成分、（C-2)成分、（c-3a)成分以及（c-3b)成分的總量’相 對於樹脂組成物的總量為70至99重量％。 (29) 上述（28)記載之光碟用紫外線硬化型樹脂組成 物，含有至少一種由前述（I)群的（甲基）丙烯酸酯單體 (c-3a)以及前述（π)群的（甲基）丙烯酸酯單體（c-3b)所成 群組者。 (30) 上述（28)記載之光碟用紫外線硬化型樹脂組成 物’其含有胺基曱酸酯（甲基）丙烯酸酯（C-2)時，係為（i)(A) 成分為己内酯改質（曱基）丙烯酸羥乙酯或（ii)含有前述（I) 群的（曱基）丙烯酸酯單體（c-3a)中任一者。 (31) 上述（15)至（30)中任一項記載之光碟用紫外線硬 化型樹脂組成物復含有受阻胺類化合物（D)。 (32) 上述（17)至（31)中任一項記載之光碟用紫外線硬 化型樹脂組成物，其中硬化時之硬化物在25〇C的彈性率為 〇. 〇1 至 9· 5MPa。 [發明的效果] 於有機色素記錄層上直接積層的界面層（導電體層） 上，具有本發明之紫外線硬化樹脂組成物的硬化物層之本 發明之光碟。在耐久實驗前及實驗後抖動值低，即使在高 溫高濕下長時間使用，記錄及播放的信賴性高且製造亦容 12 322746 201203238 易。 本發明光碟所使用之本發明紫外線硬化型樹脂組成物 (以下稱為本發明樹脂組成物），其含有具特定構造之（甲基） 丙烯酸酯及光聚合起始劑。 本發明的樹脂組成物所含有之具式所示構造之（曱 基）丙烯酸酯，較佳為單體，若為單體則n不用限制在i至 10的範圍也可使用。η的值較佳為2到7,更較佳為4到6。 本發明中使用的該具式（1)所示構造之（曱基）丙烯酸 酯（Α)，不含有具該己内酯改質構造的寡聚物，例如具己内 酯改質構造的胺基曱酸酯丙烯酸酷。 作為具上述式（1)的構造之（曱基）丙稀酸（Α)之具體的 化合物，例如較佳為己内酯改質（甲基）丙烯酸羥乙酯（如 Sartomer公司製SR-495)、己内酯改質（甲基）丙烯酸羥丁 酯、己内酯改質羥三曱基乙酸新戊二醇二（曱基）丙烯酸酯 (如日本化藥公司製KAYARADrtmHX-220、HX-620)、己内酯改 質三（丙烯醯氧基乙基）三聚異氰酸（如新中村化學公司製 NK Ester A-9300-1CL、A-9300-3CL、A-9300-6CL)以及己 内酯改質二季戊四醇六（曱基）丙烯酸酯（如曰本化藥公司 製 KAYARADrtmDPCA-20、DPCA-30、DPCA-60、DPCA-120)。 (A)成分在紫外線硬化型樹脂組成物中的含有量，對於 該樹脂組成物總量，通常是10至95重量％、較佳為20至 95重量％、更較佳為30至95重量％、又更佳為40至95重 量％。依情況而定，也較佳為20至80重量％。如果太少的 話就無法輔助色素的體積變化，為記錄信號的特性指標之 13 322746 201203238 抖動值（％)會變差。 作為本發明組成物中含有的光聚合起始劑（B)並沒有 特別的限定’例如可列舉卜羥基環己基苯基甲酮（IRgacure RTM184 ;汽巴精化有限公司製）、2-羥基-2-曱基一[4-(1-曱 基乙烯基）苯基]丙醇寡聚物（〇NE_Rif ined)、i-[4-(2-羥基 乙氧基）-苯基]-2-羥基-2-甲基-卜丙烷-l~isj(iRGACURERTM 2959;汽巴精化有限公司製）、2_羥基-l-{4~[4-(2-羥基-2- 曱基-丙醯基）-苄基]-苯基卜2-曱基-丙烷-1 —酮（iRGACURE RTM127;汽巴精化有限公司製）、2,2-二曱氧基-2-苯基乙醯 笨（IRGACURE RTM651 ;汽巴精化有限公司製）、2-經基-2-曱 基-1-苯基-丙烷-1-酮（DAR0CURRtm1173 ;汽巴精化有限公司 製）、2-甲基-1-[4-(甲基硫基）苯基]-2-N-嗎啉基丙烷 酮（IRGACURErtm907 ;汽巴精化有限公司製）、2-苄基-2-二 甲基胺基-1-(4-Ν-嗎琳苯基）-丁-1-酮、2-氣噻嘲酮、2,4 一甲基售嘲_、2, 4-二異丙基售嘲酮、異丙基嗔嘲_、 2, 4, 6-三曱基苯甲醯基二苯基膦氧化物、雙（2, 4, 6-三甲基 苯曱醯基）苯基膦氧化物、雙（2, 6-二甲氧基笨曱醯基） -2, 4, 4-三曱基戊基膦氧化物等。 在上述中上面附有RTM表示登錄商標（以下亦同）。 在本發明的紫外線硬化樹脂組成物中，這些（B)成份可 以1種或以任意比例混合2種以上使用。（B)成分在紫外線 硬化型樹脂組成物中的含量對於該樹脂組成物的總量，通 常為0.5至20重量％，較佳為1至20重量％，更較佳為i 至10重量％。另外，以下之％若無特別標註則表示重量％。 322746 14 201203238 此外’作為光聚合起始助劑的胺類等係可與上述的光 聚合起始劑併用。所使用之胺類等，可列舉笨甲酸2-二甲 基胺基乙酯、二曱基胺基笨乙酮、P-二曱基胺基笨曱酸乙 謎或P-二曱基胺基苯曱酸異戊酯等。使用該胺類等之光聚 合起始劑的情況，本發明之接著用樹脂組成物中的含有 量’對於該樹脂組成物的總量，通常為0. 005至5重量％， 較佳為0· 01至3重量％。 在本發明的組成物之樹脂組成物中，通常較佳含有前 述（A)成分以外的（甲基）丙烯酸酯（c)。作為該（甲基）丙稀 酸酯（C)，可列舉（曱基）丙烯醢基有1個以上，通常有1至 6個之（曱基）丙醯酸酯。其種類並沒有特別限定，可使用 (C-1)環氧基（甲基）丙烯酸酯（以下稱為（c-Ι)成分）與/或 (C-2)胺基甲酸酯（甲基）丙烯酸酯（以下稱為（c_2)成分）， 進一步地’以上（A)成分、（C-1)成分及（C-2)成分以外的 (C-3)(甲基）丙烯酸酯單體（以下稱為（c_3)成分）等。 另外，本發明之（曱基）丙烯酸酯是指丙烯酸曱酯或是 丙烯酸酯。 在本發明中使用的環氧基（甲基）丙醯酸酯（c-1)，有硬 化性的提升或提升硬化物的硬度與硬化速度的機能。 在本發明中，該環氧基（曱基）丙醯酸酯（C-丨）是由縮水 甘油醚型環氧化物與（曱基）丙烯酸輯反應所得。 作為用於獲得環氧基（甲基）丙烯酸酯（c_i)之縮水甘 油醚型環氧化物，可列舉以下揭示之二元醇的二縮水甘油 醚。 322746 15 201203238 作為上述二縮水甘油韃用的二醇，可列舉出雙盼A戈 其伸烷基氧化物加成物、雙酚F或其伸烷基氧化物加成 物、氫化雙驗A或伸烧基氧化物加成物、氫化雙齡ρ戍其 伸烷基氧化物加成物、乙二醇、丙二醇、新戊二醇、丁 _ 醇、己二醇、環己烧二甲醇、聚丙二醇等。 上述之環氧基（曱基）丙烯酸酯（c-i)是由這些縮水甘 油醚型環氧化合物與（曱基）丙烯酸，例如以下述條件反應 而可使（甲基）丙烯酸的羧基在環氧化合物的環氧基上進行 開環加成。 對於縮水甘油醚型環氧化合物的環氧基1當量，（甲基） 丙烯酸以0. 9至1· 5莫耳、更佳為〇. 95至1.丨莫耳之比例 進行反應。反應溫度較佳為80至12〇。(：，反應時間係約1〇 至35小時。為了促進反應，例如較佳使用三苯基膦、2, 4 6— 參（二f基胺基甲基）苯酚（TAP)、三乙醇胺、氣化四乙基銨 等觸媒。另外，反應中也可使用例如對甲氧基笨酚、曱基 對笨二酚等作為防止聚合之聚合抑制劑。 在本發明中作為上述之環氧（曱基）丙烯酸酯可 從雙紛A型環氧化合物獲得，更較佳為雙驗a型環氧基（甲 基）丙烯酸酯。本發明中，環氧基（甲基）丙烯酸酯（[—^的 分子量較佳為500至10000。 前述胺基曱酸酯（曱基）丙烯酸酯（c_2)可由多元醇、聚 異氰酸酯及羥基（曱基）丙烯酸酯化合物反應而得。更具體 的說，使多元醇與聚異氰酸酯反應而得之胺基甲酸酯募聚 物再與羥基（曱基）丙烯酸酯化合物反應而可得。 322746 16 201203238 該胺基曱酸酯（曱基）丙烯酸酯（C - 2 )係有在本發明之 樹脂組成物的黏度調整與在硬化物之彈性率的調整，以及 該樹脂組成物的硬化物層作為透光層時，有提升機械特性 (反之，彎曲量等就會降低）的機能。 例如可列舉出下列多元醇作為上述之多元醇。 (i) 新戊二醇、3-甲基-1，5-戊二醇、乙二醇、丙二醇、 1,4-丁二醇、1，6-己二醇、三羥甲基丙烷、季戊四醇、三 環癸烷二曱醇、雙-〔羥基曱基〕環己烷等脂肪族多元醇， 較佳為碳數2至10之脂肪族多元醇。 (ii) 由上述（0記載之脂肪族多元醇之一種與多元酸 反應而得之聚S旨多元醇。 作為上述之多元酸，例如可列舉琥珀酸、鄰苯二曱酸、 六氫鄰苯二曱酸酐、對苯二甲酸、己二酸、壬二酸、四氫 鄰苯二曱酸酐等。 (iii) 多元醇與ε-己内酯反應而得己内酯醇。 (iv) 聚碳酸酯多元醇。例如1，6-己二醇與碳酸二苯酯 反應而得之聚碳酸酯二醇等。 (v) 聚醚多元醇。例如聚乙二醇、聚丙二醇或聚四亞曱 基二醇等聚C2至C4烷二醇、環氧乙烷改質雙酚A等。 上述之中，較佳以聚醚多元醇或是聚酯多元醇作為多 元醇。其等的平均分子量較佳為200至8000左右，再較佳 為200至3000左右，更較佳為300至1800左右，最佳為 400至1500左右。較佳為聚C2至C4烷二醇。 作為胺基曱酸酯（曱基）丙烯酸酯（C-2)合成所使用的 17 322746 201203238 有機聚異氰酸酯，例如可列舉異佛爾酮二異氰酸酯、二異 氰酸伸六亞曱酯、二異氰酸曱苯酯、二異氰酸二甲苯酯、 二苯曱烷-4, 4-二異氰酸酯或二異氰酸二環戊烯酯。其中， 較佳為異佛爾酮二異氰酸酯。 作為胺基曱酸酯（曱基）丙烯酸酯（C-2)合成所使用的 羥基（甲基）丙烯酸酯化合物，例如可列舉（曱基）丙烯酸羥 乙酯、（甲基）丙烯酸羥丙酯、（甲基）丙烯酸羥丁酯、二羥 曱基環己基單（甲基）丙烯酸酯等（曱基）丙烯酸羥基C2-C8 脂肪族烴酯，（曱基）丙烯酸酯羥己内酯。其中較佳的羥基 (甲基）丙烯酸酯為（曱基）丙烯酸羥基C2-C8脂肪族烴酯， 更佳為（曱基）丙烯酸羥基C2-C4脂肪族烴酯，最佳為（曱基） 丙烯酸羥乙酯。 前述反應舉例係如以下方式進行。亦即，多元醇中以 其羥基每1當量與有機聚異氰酸酯之異氰酸酯基較佳為 1. 1至2. 0當量之方式混合，反應溫度較佳為70至90°C使 其反應，合成胺基甲酸酯募聚物。接著，胺基曱酸酯寡聚 物的異氰酸酯基每1當量與羥基（曱基）丙烯酸酯化合物之 羥基較佳為1至1.5當量之方式混合，在70至90°C使其 反應，即可得目標之胺基曱酸酯（曱基）丙烯酸酯。 較佳的胺基曱酸酯（曱基）丙烯酸酯（C-2)，係使用聚酯 多元醇或聚醚多元醇作為多元醇，與作為羥基（曱基）丙烯 酸酯的（曱基）丙烯酸2-羥乙酯所得之胺基曱酸酯（曱基）丙 烯酸酯，更較佳可列舉以聚酯多元醇或聚醚多元醇、聚異 氰酸酯及2-羥乙基丙烯酸酯三者所得之胺基甲酸酯丙烯酸 18 322746 201203238 酯（c-2a)。 另外，使用分子量200至3000左右（較佳為分子量300 至1800)之聚酿多元醇或聚醚多元醇所得之胺基甲酸酯（甲 基）丙婦酸醋也為較佳的胺基曱酸酯（甲基）丙烯酸酯（C-2) 之一。 此外’依情形而定’以300至1800左右之聚C2至C6 院二醇’更佳為分子量300至1800左右之聚C3至C5烷二 醇與異佛爾網二異氰酸酯及（曱基）丙烯酸羥C2-C4酯所反 應而得之胺基曱酸酯（曱基）丙烯酸酯也為較佳的胺基曱酸 酯（曱基）丙烯酸酯（C-2)之一。 另外’ UX-0937 :聚醚系胺基甲酸酯丙烯酸酯（日本化 藥（公司）製）等係也可從市場獲得。胺基甲酸酯（甲基）丙烯 酸醋（C-2)之分子量較佳為400至loooo左右。 在本發明的樹脂組成物中，含有胺基甲酸酯（甲基）丙 酿酸醋（C-2)的態樣係為較佳的態樣之一。（c)成分可為單 獨含有胺基甲酸酯（曱基）丙烯酸酯（C一2)之態樣，也可為與 其他（C)成分併用之態樣。 本發明之樹脂組成物中含有胺基曱酸酯（甲基）丙醯酸 醋（C-2)時’其含量對於樹脂組成物之總量為〇%以上，通 常在50%以下’較佳在40%以下，又更佳在30%以下，視情 況而定，也可以在15%以下。 並沒有特別限制作為（A)成分、（C -1)成分及（C - 2)成分 以外的（甲基）丙烯酸酯（C)使用之（甲基）丙烯酸酯單體 (C-3) ’可例舉如下述之單官能或多官能（較佳為2至6官 19 322746 201203238 能）（甲基）丙稀酸酯。 例如’作為在（C-3)成分之單官能（甲基）丙烯酸酯（含 有一（甲基）丙稀酿基的（甲基）丙婦酸酯），具體地可例示下 列所示之化合物。 (i) (曱基）丙烯酸異辛酯、（曱基）丙烯酸異戊酯、（曱 基）丙烯酸十二酯、（甲基）丙烯酸異癸酯、（甲基）丙烯酸十 八酯、（甲基）丙烯酸十六酯、（甲基）丙烯酸異十四酯、（甲 基）丙烯酸十三酯等之（甲基）丙烯酸（；5至C18(C7至C18為 佳）烷酯； (ii) (甲基）丙烯酸三環癸酯、（曱基）丙烯酸異莰酯、 丙烯酸二環戊烯酯（例如日立化成工業公司製FANCRYL FA-511A)、丙烯酸二環戊烯氧乙基酯（（曱基）丙烯酸二環戊 二烯氧乙基酯）（例如曰立化成工業公司製FANCRYL FA-512A)、曱基丙烯酸二環戊烯氧酯（例如曰立化成工業公 司製FANCRYL FA-512M)、丙烯酸二環戊烯酯（例如日立化 成工業公司製FANCRYL FA-513A)、甲基丙烯酸二環戊烧酯 (例如日立化成工業公司製FANCRYL FA-513M)、丙烯酸卜 金剛烷酯（例如出光興產公司製Adamantate AA)、丙烯酸 2-甲基-2-金剛烧酯（例如出光興產公司製Adamantate ΜΑ)、丙烯酸2-乙基-2-金剛烷酯（例如出光興產公司製 Adamantate ΕΑ)、曱基丙烯酸1-金剛烷酯（例如出光興產 公司製Adamantate AM)等具有C7至C10脂肪族環的（曱基） 丙烯酸酯化合物； (iii) 聚丙二醇（甲基）丙烯酸酯、聚環氧丙烷改質（曱 20 322746 201203238 基）丙稀酸壬基苯醋、甲氧基二·丙一醇（甲基）丙稀酸醋等聚 環氧丙院改質（甲基）丙烯酸酯’或是乙氧基二乙二醇（曱基） 丙烯酸酯、環氧乙烷改質苯氧基化磷酸（甲基）丙烯酸酯、 環氧乙烷改質丁氧基化填酸（曱基）丙烯酸酯及環氧乙燒改 質辛氧基化磷酸（曱基）丙烯酸酯等環氧乙烷改質（甲基）丙 烯酸酯等C2或C3伸烷基氧化物改質（甲基）丙烯酸酯化合 物； (iv)復可舉出上述以外之單官能（曱基）丙烯酸酯，例 如（甲基）丙烯酸苄酯、（甲基）丙烯酸四氫糠醋、（曱基）丙 稀酸嗎琳g旨、苯基縮水甘油基（曱基）丙稀酸醋、（甲基）丙 烯酸2-羥丙基酯等。 3有一個（曱基）丙稀醯基之（甲基）丙稀酸醋單體於本 發明之紫外線硬化型樹脂組成物作為透光層而形成光碟 (例如藍光光碟）時，有提升機械性能（反之，彎曲量等就會 降低）的機能。 例如，在具有有機色素記錄層之光碟（例如藍光光碟） 中於該有機色素記錄層上所形成之界面層，以直接接觸 的方式在該界⑽域層本發㈣外線硬化型樹脂之硬化 物層所形成之光碟，即可發揮上述之機能。 上述之中，（曱基）丙烯酸C5至C18(較佳為C7至C18) 烧醋係有降低本發明樹脂組成物的硬化物彈性率之效果， 同’可㈣使本發明樹驗成物的硬化物為較佳 可列舉下列有2至6個（甲基）丙稀醯基之（甲基）丙稀 322746 21 201203238 酸酯單體作為上述（甲基）丙烯酸酯單體（C-3)之多官能（甲 基）丙稀酸醋單體。 (i)作為（C-3)成分，含有兩個（甲基）丙烯醯基的（曱基) 丙婦酸酯單體： 可列舉環己烷-1，4-二曱醇二（甲基）丙烯酸曱酯、環己 院_1，3-二甲醇二（曱基）丙烯酸酯、三環癸烧二曱醇二（甲 基）丙烯酸酯（例如曰本化藥（公司）社製KAYARAD R-604、 三環癸烷二羥甲基二丙烯酸酯等）、二噚烷二醇二（曱基） 丙烯酸酯（例如日本化藥（公司）社製KAYARAD R_6〇4、二噚 统二醇二丙烯酸酯等）、新戊二醇二（甲基）丙稀酸酯、二（甲 基）丙烯酸二環戊酯、1，6-己二醇二（曱基）丙烯酸酯、環氧 乙烧改質1，6-己二醇二（曱基）丙稀酸g旨、新戊二醇二（曱 基）丙烯酸酯、伸烷基氧化物改質新戊二醇二（甲基）丙烯酸 醋、羥基三甲基乙酸新戊二醇二（曱基）丙烯酸酯、聚乙二 醇二（甲基）丙婦酸酯、聚丙二醇二（曱基）丙稀酸酯、（聚） 環氧乙烧或（聚）環氧丙烧等之（聚）伸统基氧化物改質雙盼 A型二（甲基）丙烯酸酯、環氧乙烧改質填酸二（曱基）丙烯 酸酯等。 上述中較佳的為聚環氧乙烷改質雙酚A型二（曱基）丙 烯酸酯，依情形不同，更佳為環氧乙烷5至15莫耳改質雙 酚A型二（曱基）丙烯酸酯更佳。 另外’也較佳為2-乙基-2-丁基-丙二醇二（曱基）丙稀 酸酯、1,9-壬二醇二（曱基）丙烯酸酯以及1，1〇-癸二醇二 (甲基）丙烯酸酯等含有碳數7至18的伸烷基之二醇二（甲 22 322746 201203238 基）丙烯酸s旨。 這些化合物有降低樹脂組成物的硬化物之彈性率的機 月匕’依需求不同’可用於使本發明樹脂組成物的硬化物為 較佳的彈性率。 (ii)作為（C-3)成分，含有三個（曱基）丙稀酿基之（甲 基）丙稀酸S旨單體； 可列舉三羥曱基丙烷三（曱基）丙烯酸酯、三羥甲基辛 烷二（曱基）丙烯酸酯、三羥甲基丙烧聚乙氧基三（曱基）丙 烯酸酯、三羥曱基丙烷聚丙氧基三（曱基）丙烯酸酯、三羥 曱基丙烷聚乙氧基聚丙氧基三（甲基）丙烯酸酯、三[(曱基） 丙晞醯氧基乙基]三聚異氰酸酯、季戊四醇三（曱基）丙稀酸 酯、環氧乙烷改質三羥甲基丙烷三（甲基）丙烯酸酯、環氧 丙烷改質三羥曱基丙烷三（甲基）丙烯酸酯等。 (ill)作為（C-3)成分，含有四個（甲基）丙烯醯基之（甲 基）丙烯酸酯單體； 歹J舉季戍四醇聚乙氧基四（曱基）丙稀酸醋、季戍四 丙氧基四（曱基）丙稀酸酯、季戊四醇四（曱基）丙烯酸 酉曰、雙（二羥甲基丙烷）四（曱基）丙烯酸酯、二季戊四醇四 (曱基）丙烯酸酯等。 (lv)作為（C-3)成分，含有五個（曱基）丙烯醯基之（曱 基）丙烯酸酯單體： 可列舉二季戊四醇五（甲基）丙烯酸酯等。 (v)作為（c_3)成分，含有六個（甲基）丙烯醯基之（甲基） 丙烯酸酯單體： 23 322746 201203238 可列舉二季戊四醇六（甲基）丙埽酸酯等。 此外，本發明所用之（甲基）丙烯酸酯單體也可為含有 7個以上的（甲基）丙烯醯基。 在以上列舉的（C-3)成分（（甲基）丙烯酸酯單體）中，下 述（丨）群記載之（甲基）丙烯酸酯單體（c-3a)與前述（A)成分 一起使用時，會提升所得到的光碟（例如藍光光碟）之紀錄 特性’為較佳的（甲基）丙烯酸醋單體之一。 (I)群： (i) (甲基）丙稀酸異辛醋、（甲基）丙烯酸異戊醋、（曱 基）丙烯酸十二酯、（曱基）丙烯酸異癸酯、（甲基）丙烯酸十 八酯、（甲基）丙烯酸十六酯、（甲基）丙烯酸異十四酯、（甲 基）丙烯酸十三酯等之（曱基）丙烯酸05至C18(C7至C18為 佳）烧醋’以及2-乙基-2-丁基-丙二醇二（甲基）丙烯酸酯、 1，9—壬二醇二（甲基）丙稀酸酯以及1，10-癸二醇（甲基）丙 烯酸酯等含有碳數7至18的伸烷基二醇二（甲基）丙烯酸 酯。 (ii) 聚丙一醇（曱基）丙婦酸g旨、聚丙二醇二（甲基）丙 烯酸酯、聚環氧丙烷改質（曱基）丙烯酸壬基苯酯、聚環氧 丙烧改質新戊二醇二（曱基）丙稀酸g旨、聚環氧丙烧改質 1,6-己二醇二（甲基）丙浠酸酯、聚環氧丙烧改質雙酚a型 二（甲基）丙烯酸酯以及甲氧基三丙二醇（曱基）丙烯酸酯等 環氧丙烷改質之單或雙（甲基）丙烯酸酯。 (iii) 聚環氧乙烷改質雙酚A型二（甲基）丙烯酸酯，較 佳為環氧乙烷5至15莫耳改質雙酚A型二（曱基）丙婦酸 322746 24 201203238 酿’更佳為環氧乙烷10莫耳改質雙酚A型二（曱基）丙烯酸 酉旨。 (iv) 環氧乙烷2莫耳改質苯酚丙烯酸酯、環氧乙烷6 莫耳改質苯酚丙稀酸酯等聚環氧乙烧改質苯酚丙烯酸酯， 較佳為環氧乙烷2至10莫耳改質苯酚丙烯酸酯。 (v) 聚（乙二醇-四亞甲基二醇）二丙烯酸酯、聚（丙二醇 四亞甲基二醇）二丙烯酸酯、聚四亞甲基二醇二丙烯酸 酯、聚（乙二醇-四亞曱基二醇）二丙烯酸曱酯、聚（丙二醇— 四亞甲基二醇）二丙烯酸甲酯、聚四亞甲基二醇二丙烯酸酯 等含有四亞甲基二醇構造之（甲基）丙烯酸酯，較佳為聚四 亞甲基二醇二（曱基）丙烯酸酯或聚（C2至C3伸烷二醇-四 亞甲基二醇）二（甲基）丙烯酸酯（另外聚合較佳為2至20左 右）。 衣乳内烷改質早或二（曱基）丙烯酸酯係為 之’依情形不同，可 返之笮 平^ >尤P又買早或 較佳的（甲基）丙烯酸酯單體（c_3a)之一，依情形不同， 給予本發明之藍光_更優良之靖錢特性與耐久性。 —在該環氧丙烧改質（甲基）丙烯酸醋中，環氧丙烧單仿 重複數（改質莫耳數）較佳為2至15左右。分子中之（甲基， 丙烯醯基個數較乡時縣㈣域質莫耳數錢提升而土為 佳例如刀子中（甲基）丙稀酿基個數為一個的情形 丙院之單㈣複數（改質莫耳數）較佳為 2以上，較佳為' 位右二甲基)丙烯醯基個數為兩個的情形環氧丙烧 早^重複數較佳為7以上，具體來說較佳為7至15左右 作為較佳的環氧丙貌改質(甲基)丙烯酸醋，例如可例 322746 25 201203238 舉如聚丙二醇單或二（甲基）丙烯酸酯、聚環氧丙烷改質（甲 基）丙烯酸壬基苯酯或甲氧基三丙二醇（甲基）丙烯酸酯等。 作為聚丙二醇（曱基）丙烯酸酯，例如可例舉如曰油公 司製之BLEMMERrtmAP-150(丙二醇單位重複數3)、ap_4〇〇(丙 二醇單位重複數6)、AP-550C丙二醇單位重複數9)β另外， 作為聚丙二醇二（甲基）丙婦酸酯例如，可例舉如日立化成 工業公司製之FANCRYLrtmFA-P240A(丙二醇單位重複數7)、 FA-P270A(丙二醇單位重複數12)作為聚環氧丙烷改質（曱 基）丙烯酸壬基苯酯例如，可例舉東亞合成公司製之 (環氧丙烧單位重複數2.5)、第一工業製藥公司製 Fr〇ntierRTMNP-5P(環氧丙烧單位重複數5)，以及作為曱氣 基二丙二醇（曱基）丙稀酸酯例如，可例舉新中村化學公1 製NK Ester AM-30PG(丙二醇單位重複數3)等。較佳為 二醇單位重複數在12左右之聚丙二醇二（曱基）丙烯酸 酯’例如FA-P270A可得到更優秀的記錄特性。 另外（I)群記載之（曱基）丙烯酸酯（(:_33)中，（甲基） 丙烯酸C5至C8烷酯以及碳數7至18伸烷二醇二（甲基） 丙稀酸酯亦為較佳的（甲基）丙稀酸酯單體之一。該等可认 予優秀的記錄信號特性與耐久性◎在這些之中，更佳為（; 基）丙烯酸C10至C15烷酯，尤其較佳為（甲基）丙烯醆 醋。 另外上述（I)群之（甲基）丙烯酸酯單體（c—3a)，藉由與 前述（A)成分併用，可使本發明樹脂組成物之硬化物的彈性 率為本發明之較佳的彈性率（25°C)，例如〇.〇1至4〇Mpa、 322746 26 201203238 下，較佳為0. 01至未達lOMPa，更佳為〇 〇1至9 5MPa的 . 範圍。 - 本發明樹脂組成物之硬化物層在25°C的彈性率，在調 整為上述較佳之0.01至40MPa以下時，在有機色素記錄層 上積層的界面層上具有該硬化層之光碟會有更好的記錄特 性。 這些（I)群之（甲基）丙烯酸酯單體（c-3a)對於樹脂組 成物的總量，可在〇至60%左右的範圍使用，較佳為10至 60%，更佳為20至60%，又更佳為30至60%的範圍。 另外，上述（C-3)成分之中，依需求，可使用下述（Π) 群之（甲基）丙烯酸酯單體（c-3b)。 (II)群： (甲基）丙烯酸二環戊烯氧基乙基酯（或二環戊二烯氧基乙 基（曱基）丙稀酸酯）、1，6-己一醇一（曱基）丙稀酸醋、二丙 一醇二（甲基）丙婦酸醋或三丙二醇二（甲基）丙烯酸g旨。 上述（II)群之（曱基）丙烯酸酯單體（c-3b)，可與前述 (A)—起使用’復依需求不同，可與前述（C_2)成分或上述 (c-3b)的任一者或與兩者一起使用’可降低因溫度變化所 造成硬化物彈性率的變化’以獲得硬度適當的硬化物。 該等（II)群之（甲基）丙炼酸醋單體（c-3b)，對於樹脂 組成物的總量，可於〇至60%左右的範圍使用。較佳為1〇 至50%左右。 作為上述（C)成分之較佳成分，可列舉（甲基）丙烯酸 C5至C18烷酯、聚環氧乙烷5至15莫耳改質雙酚a型二（甲 322746 27 201203238 基）丙烯酸酯及（甲基）丙烯酸二環戊二烯氧基乙酯。更較佳 為本發明之樹脂組成物含有由該等所成群組選出之至少一 種’其含量為（C)成分之50至100%。 在本發明樹脂混合物中，這些（C)成分可以一種或以任 意比例混合兩種以上使用。（C)成分在紫外線硬化型樹脂組 成物中的含量通常在90%以下，較佳為80%以下，更佳為 70%以下，又更佳為55%以下。雖然（c)成分也可為〇%，不 過通常含有（C)成分較佳。含有（C)成分的情形，比0%大就 可以’較佳係為40%以上，在30至80%或40至70%也較佳。 另外，併用（C-1)與（C-2)作為（C)成分的情形，通常 (C-1)與/或（C-2)各別對於（〇成分1〇〇重量份為5至50重 量份’較佳係為10至30重量份左右，（C-3)對於（C)成分 1〇〇重量份為20至80重量份，較佳為用25至75重量份。 作為本發明之較佳的樹脂組成物之一，可列舉光碟用 紫外線硬化型樹脂組成物為含有（A)成分以及前述（曱基） 丙烯酸酯（C)含有由胺基曱酸酯（曱基）丙烯酸酯（c_2)、前 述U)群之（甲基）丙烯酸酯單體（c_3a)u及前述（11)群之 (曱基）丙烯酸酯單體（c_3b)所構成群組中所選出之至少一 種’（A)成分、（c-2)成分、（c-3a)成分以及（c-3b)成分的 總量’對於樹脂組成物的總量為至99%，更佳為8〇至 99% ’又更佳為90至99%，光聚合起始劑（B)為1至， 上述之外的（C)成分或添加劑為〇至20%。 在本發明中樹脂組成物（A)成分、（B)成分、（〇成分的 含量比例，對於本發明樹脂組成物的總量，通常（A)成分為 28 322746 201203238 10至95重量％(以下％沒有特別表示則為重量％)、（B)成分 為1至20%以及（C)成分為4至89%， 較佳為（A)成分為20至95%重量、（B)成分為1至20% 以及（C)成分為4至79%， 更佳為（A)成分為30至95%重量、（B)成分為1至10% 以及（C)成分為4至69%， 又更佳為（A)成分為40至95%重量、（B)成分為1至10% 以及（C)成分為4至59%， 最佳為（A)成分為45至95%重量、（B)成分為1至10% 以及（C)成分為4至54%。 下述舉例本發明的樹脂組成物之幾個較佳態樣 (embodiment) 0 (i) 含有（A)成分、（B)成分以及（C)成分3者的態樣。 (ii) (A)成分、（B)成分以及（C)成分3者的含量比例為 (A)成分、（B)成分以及（C)成分3者之含有比例中任一種比 例的上述（i)記載之態樣。 (iii) (A)成分選自由己内酯改質（甲基）丙烯酸羥乙 酯、己内酯改質（甲基）丙烯酸羥丁酯、已内酯改質羥基三 曱基乙酸新戊二醇二（曱基）丙烯酸酯、己内酯改質三（丙烯 醯氧基乙基）三聚異氰酸酯以及己内酯改質二季戊四醇六 (甲基）丙烯酸酯所成群組中之至少一種之上述（i)或（ii) 記載之態樣。 (iv) 含有選自由環氧基（甲基）丙烯酸酯（C-1)、胺基甲 酸酯（曱基）丙烯酸酯（C-2)以及（曱基）丙烯酸酯單體（C-3) 29 322746 201203238 所成群組中之至少一種作為（C)成分之上述（i)至（iii)任 一項記載之態樣。 (v) 包含胺基曱酸酯（曱基）丙烯酸酯（C-2)作為（C)成 分之上述（iv)記載之態樣。 (vi) 胺基曱酸酯（曱基）丙烯酸酯（c-2)含量，對於本發 明之樹脂組成物的總量為比〇%大、15%以下之上述（i)至（iv) 中任一項記載態樣。 (vii) 胺基甲酸酯（曱基）丙烯酸酯（c-2)係使用聚酯多 元醇或聚醚多元醇、聚異氰酸酯及丙烯酸2-羥乙酯之反應 所得之胺基甲酸酯丙烯酸酯之上述（v )或（v i)記載態樣。 (viii) 胺基曱酸酯（曱基）丙烯酸酯（c_2)係使用聚 C2-C6燒二醇、聚異氰酸酯及羥基（甲基）丙烯酸酯化合物 所得之胺基甲酸酯丙烯酸酯之上述（iv)至（vi)記載的態 様。 (ix) 聚異氰酸酯為異佛爾酮二異氰酸酯之上述（vii) 或（viii)記載態樣。 (X)經基（甲基）丙烯酸酯化合物為（甲基）丙烯酸羥C2 至C4烷酯之上述任一項記載之態樣。 (xi)含有（甲基）丙烯酸酯單體（C-3)作為（C)成分之上 述（i)至（X)任一項記載之態樣。 (xu)含有由前述（I)群之（甲基）丙烯酸酯單體（c-3a) 與前述（II)群之（甲基）丙烯酸酯單體（c_3b)所成群組中選 出之至少一種作為上述（甲基）丙烯酸酯單體（C-3)之上述 (xi)記載之態樣。 322746 30 201203238 (X111)含有上述（曱基）丙烯酸酯單體（c-3a)至少一種 之上述（xii)記載之態樣。 (xiv) 含有（甲基）丙烯酸C5至C18烷酯作為前述（c_3a) 之上述（xii)或（xiii)記載之態樣。 (xv) 含有（曱基）丙烯酸ci〇至ci5烷酯作為前述（c-3a) 之上述（xiv)記載之態樣。 (xvi) 含有環氧丙烷改質單或雙（曱基）丙烯酸酯作為 則述（c-3a)之上述（xii)至（xv)任一項記載之態樣。 (xvii) 含有聚環氧乙烷5至15莫耳改質雙酚a型雙 (甲基）丙烯酸酯作為前述（c_3a)之上述（xii)至（xvi)記載 之態樣。 (xviii) 含有至少一種前述（π)群之（甲基）丙烯酸酯 單體之上述（xii)至（χνΠ)記载之態樣。 (xix) 含有（甲基）丙烯酸二環戊二烯氧基乙酯作為上 述（c-3b)之上述（xviii)記載之態樣。 (XX)由如述（c-3a)以及（c-3b)所成群組中選出之至少 種之含里對於本發明樹脂組成物的總量為1 〇至6〇%之上 述（xii)至（xix)任一項記載之態樣。 (xxi)由前述（c-3a)所成群組中選出之至少一種之含 量為20至50%之上述（XX)記載之態樣。 (xxi i)由前述（c-3a)所成群組中選出之至少一種之含 量為30至50%之上述（XX)記載之態樣。 (xxiii)含有（甲基）丙烯酸C5至C18酯、聚環氧乙烧 5至15莫耳改質雙酚A型雙（曱基）丙烯酸酯、（曱基）丙= 322746 31 201203238 酸二環戊二烯氧基乙基酯以及聚丙二醇二（曱基）丙烯酸酯 所成群組中選出之至少一種作為上述（甲基）丙埽酸酯單體 (C-3) ’其含有量對於（c)成分的總量為50%至1〇〇%之上述 (xii)、（XX)至（xxii)任一項記載之態樣。 (xxiv) 含有（甲基）丙烯酸C5至Π8烷酯作為（c)成分 之上述（xxiii)記載之態樣。 (xxv) (甲基）丙烯酸C5至ci8烷酯係為（甲基）丙烯酸 十二醋之（xxiv)記載之態樣。 (xxvi) 含有對於本發明樹脂組成物的總量為〇.〇1至 3%之後述的受阻胺類化合物之上述（i)至（χχν)枉一項記載 之態樣。 (xxvii) 本發明樹脂組成物的硬化物在25〇c的彈性率 為〇. 01至40MPa之上述（i)至（xxvi)任一項記戴之態樣。 (xxviii) 本發明樹脂組成物的硬化物在烈亡的彈性率 為〇. 01至9. 5MPa之上述（i)至（xxvi)任一項記載之態樣。 本發明之光碟用紫外線硬化型樹脂組成物，可以依需 求不同也可加入防鏽劑、抗氧化劑、有機溶劑、矽烷偶合 劑、聚合抑止劑、調平劑、靜電防止劑、表面潤滑劑、螢 光増白劑、光安定劑（例如受阻胺類化合物）、填充劑等添 加劑。受阻胺類化合物的具體例可舉出如L 2, 2, 6, 6一五甲 基〜4-哌啶醇、2, 2, 6, 6-四甲基-4-哌啶醇、（甲基）丙烯酸 I 2, 2, 6, 6-五甲基-4-痕啶酯（ADEKA(公司）製，LA-82)。這 些添加劑的調配量對於本發明樹脂組成物的總量為〇至 1〇%左右的範圍内。 32 322746 201203238 受阻胺類化合物係為較佳之添加劑之-，對於本發明 .樹脂組成物的總量為在0.001 i 10%的範圍’較佳為在〇 - 至3%的範圍添加。 本發明之光碟用紫外線硬化型樹脂，可在常溫至8〇t 混合溶解各前述成分獲得，依需求也可將夾雜物進行過濾 等操作去除。考慮本發明接著用樹脂組成物塗佈性，較佳 為適當調整成分之調配比例，使其25°C的黏度為30至 2000mPa · s 的範圍。 本發明之光碟用紫外線硬化樹脂組成物可適合用在作 為藍光光碟等雷射入射側之透光層用塗佈劑。具體來說以 所塗佈樹脂的膜厚成為1至1 〇 〇 " m之方法依任意方法，例 如旋轉塗佈、2P法、滚輪塗佈法、網板印刷法等使組成物 塗佈在光碟基板上。塗佈後，在單侧或是兩面以紫外、近 紫外（波長200至400nm附近）的光線照射使之硬化。照射 量較佳約50至1500mJ/cm2，尤其更佳係為1〇〇至 1000mJ/cm2左右。因為紫外、近紫外光照射形成硬化，故 若為使用紫外、近紫外光燈的話並無限制光源，例舉如低 壓、高壓或是超高壓水銀燈、金屬齒化物燈、（脈衝）氙弧 燈或無電極燈等等。 透光層為由在記錄層或界面層上形成第一樹脂層與由 第一樹脂層來看為與記錄層或界面層侧為相對的面上形成 的第二樹脂層所構成的情形下，本發明之紫外線硬化型樹 脂組成物可適合用在前述之第一樹脂層。 在這情形下，前述第一樹脂層厚度通常係在lem至 33 322746 201203238 50#m，較佳為至40/im，又更佳為10/^至3〇^m。 另外，前述第二樹脂層厚度通常係在5〇wm至 透光層（保護層）為兩層所構成的情形，具體的透光層 (保護層）的形成方法，具體而言以所塗佈樹脂的膜厚成為 1至30 // in之方式依任思方法，例如例如旋轉塗佈、2p法、 滚輪塗佈法、網板印刷法將組成物在光碟基板作為第一樹 脂層。塗佈後，單侧或兩面以紫外、近紫外（波長2〇〇至 400nm附近）的光線照射使之硬化。照射量較佳約為5〇至 1500mJ/cm2’尤其更佳為100至l〇〇〇mj/cm2左右。硬化後， 以膜厚成為至100私m之方式依任意方法，例如旋轉塗 佈、2P法、滾輪塗佈法、網板印刷法將組成物在光碟基板 作為第二樹脂層。塗佈後，單側或兩面以紫外、近紫外（波 長200至400nm附近）的光線照射使之硬化。照射量較佳約 50至1500mJ/cm2 ’尤其更佳為ι〇〇至1〇〇〇mJ/cm2左右。再 者因為紫外、近紫外光照射形成硬化，故若為使用紫外、 近紫外光燈的話並無限制光源，例舉如低壓、高壓或是超 尚壓水銀燈、金屬函化物燈、（脈衝）氣弧燈或無電極燈等 等。 以上述方法所得之本發明光碟，該光碟最少要有具有 溝槽之碳_旨等的_支撐基板、於該溝槽上所形成之反 射層、於該反射層上所形成之有機色素（通常為偶氮色素) δ己錄層：於§亥記錄層上所形成的界面層(介電層）、於該界 面層上以本發日月樹脂組成物所形成之硬化物層（透光層）。 322746 34 201203238 在本發明的光碟中，於本發明樹脂組成物之硬化層 上，復可有別的樹脂組成物之硬化層。在這情形下，透光 層為以本發明樹脂組成物之硬化層與其他樹脂組成物之石更 化物層兩層所形成。 本發明的光*碟中，於含有有機色素（通常為偶氮色素） 的己錄層上所形成的界面層上，係有必要直接以本發明樹 脂組成物形成硬化層，由此可達本發明之效果。 界面層如在業界所熟知的，係以含鋅等金屬原子之複 °物等之含有金屬原子的無機化合物所形成之層。 【實施方式】 以下’由本發明實施例做更具體之說明，本發明並不 只限於此等實施例。 表1所表示的成分以表1所示之比例（重量份），均一 忍σ調製而成之實施例丨至5的紫外線硬化型樹脂組成物。 35 322746 201203238201203238 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to an optical disk having an organic dye recording layer and an ultraviolet curable resin composition useful therefor. [Prior Art] At present, as a practical optical disc recording medium, there are a CD-R and a CD-RW in which a protective layer made of a recording layer, a reflective layer, and an ultraviolet curable resin is laminated on a l 2 mm polycarbonate substrate. With will. 6mra polycarbonate substrate, with a recording layer and a reflective layer. The 6 mm polycarbonate substrate is a DVD-R, a DVD+R, a DVD-RW, a DVD+RW, a DVD-RAM or the like which is bonded with an ultraviolet-hardening resin. In recent years, Blu-ray Disc (BD R), which is about five times the recording capacity of a single-layer DVD, has been on the market. A case of Blu-ray disc is in 1. A transparent or opaque plastic substrate is formed with a reflective layer, a recording layer, and an interfacial layer (also referred to as a dielectric layer), and then a layer is deposited on the interfacial layer. The structure of the lmm light transmissive layer (also referred to as the cover layer) is a disc recorded/played through the light transmissive layer. The recording layer uses an organic dye or an inorganic compound, and the interface layer uses a translucent inorganic compound. Further, a cured layer of an ultraviolet curable resin is used as the light transmissive layer. The Blu-ray disc has a recording layer containing an organic dye, and is recorded by laser light irradiation on the recording layer 'by the volume change of the organic pigment. For the purpose of obtaining a better recording signal characteristic (for example, jitter characteristics) by the volume change of the auxiliary dye, it has been proposed that the elastic modulus of the interface layer formed by the curable resin forming the permeable cover layer with the recording layer is 25 . (: an optical information recording medium characterized by a density of 4 MPa or less (Patent Document 1), and a resin cured layer having an elastic modulus of 34 to 94 MPa at 25 ° C on a recording layer having 4 322746 201203238 organic dye. Optical information recording medium (Patent Document 2). However, these documents do not disclose at all the composition of the cured resin layer to achieve the elastic modulus. In addition, the temperature is 80 ° C / relative humidity 80% RH environment The environment test was carried out for 100 hours to be used as the reliability evaluation index of the above-mentioned optical disk recording medium. In order to reduce the degree of deterioration of the recorded signal before and after the environmental test within a predetermined range, a technique of forming a cured layer of a curable resin has been proposed, and hardening has been proposed. The layer is 5° C. and 55° on the interface layer. (The storage elastic modulus is below 100 MPa′′ and the ratio of the storage elastic modulus at 5° C. to the storage elastic modulus at 55° C. is 10 or less. A flexible urethane acrylate S as a main component, a monofunctional acrylate as a diluent, or a urethane acrylate as a main component and as a diluent Monofunctional acrylate vinegar and polyfunctional acrylate (Patent Document 3). However, as indicated above, it is only suggested that the main component is an amino phthalate acrylate, the diluent is a monofunctional acrylate or A monofunctional acrylate and a polyfunctional acrylate are used in combination. A specific composition is not proposed. [Prior Art Document] [Patent Document] [Patent Document 1] Japanese Laid-Open Patent Publication No. 2008-123631 [Patent Document 2] [Patent Document 3] JP-A-2009-026379 (Summary of the Invention) (Problems to be Solved by the Invention) 5 322746 201203238 The present invention provides an excellent optical film for an optical disk containing an organic dye recording layer. In order to solve the above problems, the inventors of the present invention have been working hard to study the characteristics of the ultraviolet curable resin having a specific structure. A cured resin composition which exhibits excellent recording signal characteristics and durability in an optical disk containing an organic dye recording layer. Thus, the present invention relates to the following items (1) to (32). (1) An optical disc having an interface layer on an organic dye recording layer, and having an ultraviolet curable resin composition on the interface layer a cured layer of a material (hereinafter referred to as a resin composition) containing (A) a (fluorenyl) acrylate having a structure represented by the following formula (1) (but an amino phthalate) Except for acrylate) - c(ch2)5o - II Jn 0 (1) (wherein η represents an integer from 1 to 10) and (B) a photopolymerization initiator. (2) The above (1) The optical disc, wherein the (fluorenyl) acrylate (A) having the structure represented by the formula (1) is selected from the group consisting of modified caprolactone modified hydroxyethyl (meth) acrylate, caprolactone modified (mercapto) acrylic acid Hydroxybutyl ester, caprolactone modified hydroxytrimethylacetic acid neopentyl glycol di(meth) acrylate, caprolactone modified tris(propylene methoxyethyl) trimeric isocyanate and caprolactone modified season Ethylene 6 322746 201203238 Tetrahydrin hexa(meth) acrylate in at least one of the group. (3) The optical disk according to the above (1), wherein the resin composition is an ultraviolet curable resin composition containing a (fluorenyl) acrylate (C) other than (A). (4) The optical disc according to any one of the above-mentioned (1) to (3), which contains 20 to 95% by weight of the (meth) acrylate having the structure represented by the formula (1). A). (5) The optical disc according to the above (3) or (4), wherein the (meth) acrylate (C) is selected from the group consisting of polyester polyols or polyether polyols, and polyisocyanates and -2-hydroxyacrylates. At least one of the group of the ethyl ester reactant urethane acrylate and the polyethylene oxide modified bisphenol A type diacrylate. (6) The optical disc according to the above (3) or (4), which contains the (indenyl) acrylate monomer (c-3a) of the following group (I) and the following (II) group (A) At least one selected from the group consisting of acrylate monomers (c-3b) is the aforementioned (mercapto) acrylate (C). (I) Group (c-3a): (i) (Mercapto) acrylic C5 to C18 alkyl ester or carbon number 7 to 18 alkyl diol di(meth) acrylate; (ii) propylene oxide modification (1) polyethylene oxide modified bisphenol A type bis(indenyl) acrylate; (iv) polyepoxyethylene modified phenol propylene a phthalate; or (v) a (fluorenyl) acrylate having a polytetramethylene glycol structure; (II) a group (c-3b): 7 322746 201203238 (fluorenyl) dicyclopentene oxyacrylate Base ester (or (cyclo)acrylic acid dicyclopentadienyloxyethyl ester), 1,6-hexanediol bis(indenyl) acrylate, dipropylene glycol bis(indenyl) acrylate, tripropylene glycol di(曱) Base) acrylate. (7) The optical disc according to the above (6), which comprises the (meth) acrylate monomer (c-3a) of the above (I) group as the (fluorenyl) acrylate (C). (8) The optical disc according to the above (7), which comprises a C5 to C18 alkyl (meth)acrylate as the (fluorenyl) acrylate monomer (c-3a) of the above (I) group. (9) The optical disc according to the above (6), which comprises the (meth) acrylate monomer (c-3b) of the group (II) as the (mercapto) acrylate (C). (10) The optical disc according to any one of the above (3), wherein the urethane acrylate (C 2 ) is contained as the (mercapto) acrylate (C). (11) The optical disc according to the above (10), wherein the urethane acrylate (C-2) is a poly C2 to C6 alkylene glycol, isophorone diisocyanate and (曱) Amino phthalate (mercapto) acrylate obtained by reacting a hydroxy C 2 to C 4 alkyl acrylate. The optical disk according to any one of the above aspects, wherein the resin composition is a resin composition containing a hindered amine compound (D). (13) A method for producing an optical disk comprising the steps of: coating (A) a structure having the following formula (1) on an interface layer of an optical disk substrate having an interface layer on an organic dye recording layer ( Mercapto) acrylate - c(ch2) 5o - II Jn 0 (1) (wherein η represents an integer from 1 to 10) 8 322746 201203238 and (B) UV-curable resin composition of photopolymerization initiator The coating film is then irradiated with an active moon stalk line to form a cured layer. (14) In the method for producing an optical disk according to the above (13), the ultraviolet curable resin composition is an ultraviolet curable resin composition containing a (fluorenyl) acrylate (C) other than (A). (15) A UV curable resin composition for optical discs containing (A) (meth) acrylate having the following formula (1) (except for urethane acrylate) 4 - C (CH2 )s〇— II jn 0 (1) (wherein η represents an integer from 1 to ι〇) and (B) a photopolymerization initiator. (16) The ultraviolet curable resin composition for optical disks according to the above (15), wherein the (fluorenyl) acrylate (A) having a structure represented by the formula (1) is selected from the group consisting of caprolactone-modified (mercapto) acrylic acid. Hydroxyethyl ester, caprolactone modified hydroxybutyl (meth) acrylate, modified with lactone by triamyl acetic acid neopentyl glycol diacrylate, caprolactone modified three (acryloxy ethoxylate B At least one of a group consisting of a trimeric isocyanate and a caprolactone-modified dipentaerythritol hexa(indenyl) acrylate. (17) The ultraviolet curable resin for the optical disk according to the above (15) or (16), wherein the resin composition further contains the (fluorenyl) acrylate (C) other than the above (A). (18) The ultraviolet ray curing 322746 9 201203238 type resin composition of the optical disk according to any one of the above (15) to (17), which contains the structure represented by the formula (1) in an amount of 20 to 95% by weight based on the entire resin composition. (fluorenyl) acrylate (A). (19) The ultraviolet curable resin composition for optical discs of the above (π) or (18) wherein the aforementioned (meth) acrylate is selected from the group consisting of polyester polyols or polyether polyols, and polyisocyanates and acrylic acid- At least one of the group consisting of the reactants of 2-hydroxyethyl ester urethane acrylate and the polyethylene oxide-modified type A diacrylate. (20) The ultraviolet curable resin composition for optical disks according to any one of (1) to (19), which comprises (meth)acrylate monomer (c-3a) selected from the group (1) below and At least one of the groups of the (π) group of (indenyl) acrylate monomers (c_3b) described below as the aforementioned (meth) acrylate (c) (I) group (c-3a): ( a (meth)acrylic acid C5 to C18 alkyl ester or a carbon number of 7 to 18 alkyl monohydric bis(indenyl) acrylic acid; (ii) propylene oxide modified mono or di (meth) acrylate (iii) polyethylene oxide modified bisphenol A type bis(indenyl) acrylate; (iv) polyethylene oxide modified phenol acrylate; (v) having a polytetramethylene glycol structure (meth) acrylate; (II) Group (c-3b): (methyl) acrylate dicyclopentanyl ethoxide (or (methyl) acrylate dicyclopenta ethoxide ethyl S曰), 1,6-hexanol di(indenyl)acrylic acid, dipropylene glycol di(meth)acrylate or tripropylene glycol di(meth)acrylate. (21) The ultraviolet curable resin composition for optical disks according to the above (20), which comprises the (meth) acrylate monomer (c_3a;) of the above (I) group as the (mercapto)acrylic acid described in the former 322746 10 201203238 Since the purpose of (c). (22) The ultraviolet curable resin composition for optical discs according to the above (21), which comprises a (meth) acrylate monomer (c-3a) of the (I) group (C) to C18 alkyl ester. . (23) The ultraviolet curable resin composition for optical discs according to the above (21), wherein the content of the (meth) acrylate monomer (c-3a) of the group (I) is the total amount of the resin composition. The amount is 20 to 60 weight ° / 〇. (24) The ultraviolet curable resin composition for optical discs according to any one of the above (20), which contains the (meth) acrylate monomer (c-3b) of the above (II) group as the aforementioned (Meth) acrylate (C). (25) The ultraviolet curable resin composition for optical discs according to any one of the above (17), which contains a urethane (mercapto) acrylate (C-2) as the aforementioned ) Acetic acid vinegar (C). (26) The ultraviolet curable resin composition for optical discs according to the above (25), wherein the amino phthalate (C) acrylate (C-2) is a poly C2 to C6 alkyl diol, and an isophor Amino phthalate (meth) acrylate obtained by reacting a ketone diisocyanate with a C 2 to C 4 alkyl (meth) acrylate. (27) The ultraviolet curable resin composition for optical discs according to any one of the above (17), which contains a C5 to C18 alkyl ester selected from (meth)acrylic acid, and 5 to 15 moles of polyethylene oxide. At least one of a group of bisphenol A type bis(indenyl) acrylate, (cyclo)acrylic acid dicyclopentadienyl oxyethyl ester, and polypropylene glycol di(meth) acrylate is modified as ( The component of C), and its content is from 50% to 100% based on the total amount of the component (C). (28) The ultraviolet-ray hard 11 322746 201203238-type resin composition of the optical disk according to any one of the above (17) to (27) which contains the component (A) and is selected from the group consisting of urethane (meth)acrylate The ester (C-2), the (meth) acrylate monomer (c-3a) of the above (I) group, and the (meth) acrylate monomer (c-3b) of the above (1 丨) group are grouped At least one of the group is the aforementioned (meth) acrylate (C), wherein the total amount of the (A) component, the (C-2) component, the (c-3a) component, and the (c-3b) component is relative to the resin The total amount of the composition is from 70 to 99% by weight. (29) The ultraviolet curable resin composition for an optical disk according to the above (28), comprising at least one (meth)acrylate monomer (c-3a) of the group (I) and the (π) group (A) Group of acrylate monomers (c-3b). (30) The ultraviolet curable resin composition for optical discs according to (28) above, wherein the (i) component (A) is contained therein when the amino phthalate (meth) acrylate (C-2) is contained The ester is modified with (hydroxy) hydroxyethyl acrylate or (ii) any one of the (meth) acrylate monomer (c-3a) containing the above group (I). (31) The ultraviolet curable resin composition for an optical disk according to any one of the above (15) to (30), wherein the hindered amine compound (D) is further contained. (32) The ultraviolet curable resin composition for optical discs according to any one of the above (17), wherein the hardening property at the time of hardening is at a modulus of 25 〇C. 〇1 to 9·5MPa. [Effects of the Invention] The optical disk of the present invention having the cured layer of the ultraviolet curable resin composition of the present invention on the interface layer (conductor layer) directly laminated on the organic dye recording layer. The jitter value is low before and after the endurance test. Even if it is used for a long time under high temperature and high humidity, the reliability of recording and playback is high and the manufacturing capacity is 12 322746 201203238. The ultraviolet curable resin composition of the present invention (hereinafter referred to as the resin composition of the present invention) used in the optical disk of the present invention contains a (meth) acrylate having a specific structure and a photopolymerization initiator. The (mercapto) acrylate having a structure represented by the formula contained in the resin composition of the present invention is preferably a monomer, and if it is a monomer, n can be used without being limited to the range of i to 10. The value of η is preferably from 2 to 7, more preferably from 4 to 6. The (fluorenyl) acrylate having the structure represented by the formula (1) used in the present invention does not contain an oligomer having the modified structure of the caprolactone, for example, an amine having a modified structure of caprolactone. The phthalic acid acrylate is cool. As a specific compound of (mercapto)acrylic acid (Α) having the structure of the above formula (1), for example, a caprolactone-modified hydroxyethyl (meth)acrylate (such as SR-495 manufactured by Sartomer Co., Ltd.) is preferred. ), caprolactone modified hydroxybutyl (meth) acrylate, caprolactone modified hydroxytrimethyl acetic acid neopentyl glycol bis(indenyl) acrylate (such as KAYARADrtm HX-220, HX- manufactured by Nippon Kayaku Co., Ltd.) 620), caprolactone modified tris(propylene oxyethyl) trimeric isocyanic acid (such as NK Ester A-9300-1CL, A-9300-3CL, A-9300-6CL manufactured by Shin-Nakamura Chemical Co., Ltd.) and Caprolactone is modified with dipentaerythritol hexa(indenyl) acrylate (such as KAYARADrtm DPCA-20, DPCA-30, DPCA-60, DPCA-120 manufactured by Sakamoto Chemical Co., Ltd.). The content of the component (A) in the ultraviolet curable resin composition is usually 10 to 95% by weight, preferably 20 to 95% by weight, more preferably 30 to 95% by weight based on the total amount of the resin composition. More preferably, it is 40 to 95% by weight. It is also preferably 20 to 80% by weight, as the case may be. If there are too few, the volume change of the pigment cannot be assisted, and the jitter value (%) of the characteristic index of the recorded signal is deteriorated. The photopolymerization initiator (B) contained in the composition of the present invention is not particularly limited. For example, hydroxycyclohexyl phenyl ketone (IRgacure RTM184; manufactured by Ciba Specialty Chemicals Co., Ltd.), 2-hydroxy- 2-mercapto-[4-(1-mercaptovinyl)phenyl]propanol oligomer (〇NE_Rif ined), i-[4-(2-hydroxyethoxy)-phenyl]-2- Hydroxy-2-methyl-propane-l~isj (iRGACURERTM 2959; manufactured by Ciba Specialty Chemicals Co., Ltd.), 2_hydroxy-l-{4~[4-(2-hydroxy-2-mercapto-propionium) Base)-benzyl]-phenyl-2-mercapto-propane-1 -one (iRGACURE RTM127; manufactured by Ciba Specialty Chemicals Co., Ltd.), 2,2-dimethoxy-2-phenylethylidene IRGACURE RTM651; manufactured by Ciba Specialty Chemicals Co., Ltd.), 2-carbyl-2-mercapto-1-phenyl-propan-1-one (DAR0CURRtm1173; manufactured by Ciba Specialty Chemicals Co., Ltd.), 2-methyl-1 -[4-(Methylthio)phenyl]-2-N-morpholinylpropanone (IRGACURErtm907; manufactured by Ciba Specialty Chemicals Co., Ltd.), 2-benzyl-2-dimethylamino-1- (4-Ν-Merlinylphenyl)-butan-1-one, 2-oxothiopyrrolidone, 2,4 monomethyl succinct _, 2, 4-diisopropyl methicone, isopropyl hydrazine Mocking _, 2, 4, 6-triple Benzomidine diphenylphosphine oxide, bis(2,4,6-trimethylphenylhydrazino)phenylphosphine oxide, bis(2,6-dimethoxy adenyl)-2 , 4, 4-tridecylpentylphosphine oxide, and the like. In the above, RTM is attached to the registered trademark (the same applies hereinafter). In the ultraviolet curable resin composition of the present invention, these (B) components may be used singly or in combination of two or more kinds in any ratio. The content of the component (B) in the ultraviolet curable resin composition is usually 0 for the total amount of the resin composition. 5 to 20% by weight, preferably 1 to 20% by weight, more preferably 1 to 10% by weight. In addition, the following % represents weight % unless otherwise indicated. 322746 14 201203238 Further, an amine or the like which is a photopolymerization initiation aid can be used in combination with the above-mentioned photopolymerization initiator. The amines and the like to be used may, for example, be 2-dimethylaminoethyl benzoate, dinonylamino acetophenone, P-didecylamino succinic acid or P-didecylamino group. Isoamyl benzoate and the like. In the case of using the photopolymerization initiator of the amine or the like, the content in the resin composition for subsequent use of the present invention is usually 0 for the total amount of the resin composition. 005 to 5% by weight, preferably 0. 01 to 3% by weight. In the resin composition of the composition of the present invention, it is preferred to contain (meth) acrylate (c) other than the above component (A). Examples of the (meth) acrylate (C) include one or more (fluorenyl) acrylonitrile groups, and usually 1 to 6 (mercapto) propionate. The type thereof is not particularly limited, and (C-1) epoxy (meth) acrylate (hereinafter referred to as (c-Ι) component) and/or (C-2) urethane (methyl group) can be used. Acrylate (hereinafter referred to as (c_2) component), and further (C-3) (meth) acrylate monomer other than the above (A) component, (C-1) component, and (C-2) component (hereinafter referred to as (c_3) component) and the like. Further, the (fluorenyl) acrylate of the present invention means decyl acrylate or acrylate. The epoxy (meth)propionate (c-1) used in the present invention has a function of hardening or improving the hardness and hardening speed of the cured product. In the present invention, the epoxy (indenyl) propionate (C-oxime) is obtained by reacting a glycidyl ether type epoxide with (mercapto)acrylic acid. As the glycidyl ether type epoxide for obtaining the epoxy group (meth) acrylate (c_i), diglycidyl ether of the diol disclosed below can be mentioned. 322746 15 201203238 The diol used for the above diglycidyl hydrazine may, for example, be a bisphenol A azide alkyl oxide adduct, bisphenol F or an alkylene oxide adduct thereof, hydrogenation double A or Extrusion-based oxide adduct, hydrogenation of two-year-old 戍 戍 alkyl-oxide adduct, ethylene glycol, propylene glycol, neopentyl glycol, butanol, hexanediol, cyclohexane, dimethanol, poly Propylene glycol and the like. The above epoxy (indenyl) acrylate (ci) is obtained by reacting these glycidyl ether type epoxy compounds with (meth)acrylic acid, for example, under the following conditions, to obtain a carboxyl group of (meth)acrylic acid in an epoxy compound. The ring-opening addition is carried out on the epoxy group. For the epoxy group of the glycidyl ether type epoxy compound, 1 equivalent, (meth)acrylic acid is 0. 9 to 1. 5 m, better for 〇. 95 to 1. The ratio of 丨莫耳 is reacted. The reaction temperature is preferably from 80 to 12 Torr. (: The reaction time is about 1 to 35 hours. In order to promote the reaction, for example, triphenylphosphine, 2,4-6-di(di-f-aminomethyl)phenol (TAP), triethanolamine, gas is preferably used. Further, a catalyst such as tetraethylammonium may be used. Further, for example, p-methoxy phenol, decyl-p-quinol or the like may be used as a polymerization inhibitor for preventing polymerization. In the present invention, as the above epoxy (曱) The acrylate may be obtained from a double-type A epoxy compound, more preferably a double-type a-type epoxy (meth) acrylate. In the present invention, an epoxy (meth) acrylate ([-^ The molecular weight is preferably from 500 to 10,000. The aforementioned amino phthalate acrylate (c_2) can be obtained by reacting a polyol, a polyisocyanate and a hydroxy(indenyl) acrylate compound. More specifically, The urethane polymer obtained by reacting an alcohol with a polyisocyanate is then reacted with a hydroxy(mercapto) acrylate compound. 322746 16 201203238 The amino phthalate acrylate (C-2) The viscosity of the resin composition of the present invention is adjusted and hardened When the elastic modulus of the material is adjusted and the cured layer of the resin composition is used as the light-transmitting layer, there is a function of improving mechanical properties (or vice versa, the amount of bending is lowered). For example, the following polyols can be cited as the above-mentioned polyol. Alcohol. (i) Neopentyl glycol, 3-methyl-1,5-pentanediol, ethylene glycol, propylene glycol, 1,4-butanediol, 1,6-hexanediol, trimethylolpropane An aliphatic polyol such as pentaerythritol, tricyclodecanedonol or bis-hydroxylated cyclohexane, preferably an aliphatic polyol having 2 to 10 carbon atoms. (ii) According to the above (0) The polyhydric polyol is a polyhydric alcohol which is obtained by reacting a polybasic acid with a polybasic acid. Examples of the polybasic acid include succinic acid, phthalic acid, hexahydrophthalic anhydride, and terephthalic acid. Adipic acid, sebacic acid, tetrahydrophthalic anhydride, etc. (iii) Polyol reacted with ε-caprolactone to give caprolactone. (iv) Polycarbonate polyol. For example, 1,6- a polycarbonate diol obtained by reacting hexanediol with diphenyl carbonate, etc. (v) a polyether polyol such as polyethylene glycol, polypropylene glycol or polytetraethylene A poly-C2 to C4 alkanediol such as mercapto diol or an ethylene oxide-modified bisphenol A. Among them, a polyether polyol or a polyester polyol is preferably used as the polyol. It is preferably from about 200 to 8,000, more preferably from about 200 to 3,000, still more preferably from about 300 to 1800, most preferably from about 400 to about 1500. Preferably, it is a poly C2 to C4 alkanediol. 17 322746 201203238 organic polyisocyanate used for the synthesis of ester (mercapto) acrylate (C-2), for example, isophorone diisocyanate, hexamethylene diisocyanate, decyl phenyl diisocyanate , ditolyl diisocyanate, diphenyl decane-4, 4-diisocyanate or dicyclopentenyl diisocyanate. Among them, isophorone diisocyanate is preferred. The hydroxy (meth) acrylate compound used for the synthesis of the amino phthalate acrylate (C-2) may, for example, be hydroxyethyl (meth) acrylate or hydroxypropyl (meth) acrylate. (hydroxy) hydroxybutyl (meth) acrylate, hydroxy-C2-C8 aliphatic hydrocarbon ester of (mercapto) acrylate such as dihydroxydecylcyclohexyl mono(meth)acrylate, (mercapto) acrylate hydroxycaprolactone. The preferred hydroxy (meth) acrylate is a (hydroxy) hydroxy C2-C8 aliphatic hydrocarbon ester, more preferably a (hydroxy) hydroxy C2-C4 aliphatic hydrocarbon ester, most preferably (fluorenyl) Hydroxyethyl acrylate. The foregoing reaction examples are carried out in the following manner. That is, the isocyanate group of the organic polyisocyanate per 1 equivalent of the hydroxyl group in the polyol is preferably 1. 1 to 2. The mixture is mixed in a 0 equivalent manner, and the reaction temperature is preferably 70 to 90 ° C to cause a reaction to synthesize a urethane copolymer. Next, the isocyanate group of the amino phthalate oligomer is preferably from 1 to 1 per 1 equivalent of the hydroxyl group of the hydroxy(indenyl) acrylate compound. The mixture is mixed in a form of 5 equivalents, and reacted at 70 to 90 ° C to obtain the desired amino phthalate (decyl) acrylate. The preferred amino phthalate acrylate (C-2) is a polyester polyol or a polyether polyol as a polyol, and a (mercapto) acrylate as a hydroxy(fluorenyl) acrylate. The amine decanoate (meth) acrylate obtained by 2-hydroxyethyl ester is more preferably an amine obtained by using a polyester polyol or a polyether polyol, a polyisocyanate and a 2-hydroxyethyl acrylate. Urethane acrylate 18 322746 201203238 ester (c-2a). Further, a urethane (meth) acetoacetate obtained by using a polystyrene polyol or a polyether polyol having a molecular weight of about 200 to 3,000 (preferably having a molecular weight of 300 to 1800) is also a preferred amine hydrazine. One of the acid ester (meth) acrylates (C-2). In addition, 'depending on the situation', the poly C2 to C6 diols of about 300 to 1800' are more preferably polyc3 to C5 alkanediols with a molecular weight of about 300 to 1800, and isophora diisocyanate and (mercapto)acrylic acid. The amino phthalate (mercapto) acrylate obtained by the reaction of a hydroxy C2-C4 ester is also one of the preferred amino phthalate acrylates (C-2). Further, UX-0937: a polyether urethane acrylate (manufactured by Nippon Kayaku Co., Ltd.) or the like is also commercially available. The molecular weight of the urethane (meth) acrylate (C-2) is preferably from about 400 to about loooo. In the resin composition of the present invention, the aspect containing the urethane (meth) propionic acid vinegar (C-2) is one of preferable embodiments. The component (c) may be in the form of a urethane (fluorenyl) acrylate (C-2) alone or in combination with other components (C). When the resin composition of the present invention contains amino phthalate (meth) acrylate vinegar (C-2), the content thereof is 〇% or more, usually 50% or less, of the total amount of the resin composition. Below 40%, more preferably below 30%, depending on the situation, it can be less than 15%. The (meth) acrylate monomer (C-3) used as the (meth) acrylate (C) other than the (A) component, the (C-1) component, and the (C-2) component is not particularly limited. A monofunctional or polyfunctional (preferably 2 to 6 official 19 322746 201203238 can) (meth) acrylate such as described below can be exemplified. For example, as a monofunctional (meth) acrylate ((methyl) propionate containing one (meth) propylene) in the component (C-3), specifically, the compounds shown below can be exemplified . (i) (fluorenyl) isooctyl acrylate, isoamyl (mercapto) acrylate, dodecyl (meth) acrylate, isodecyl (meth) acrylate, octadecyl (meth) acrylate, (a) (meth)acrylic acid (5 to C18 (C7 to C18 is preferred) alkyl esters; (ii) hexadecyl acrylate, isodecyl (meth) acrylate, tridecyl (meth) acrylate; Tricyclodecyl (meth)acrylate, isodecyl (decyl)acrylate, dicyclopentenyl acrylate (for example, FANCRYL FA-511A manufactured by Hitachi Chemical Co., Ltd.), dicyclopentenyloxyethyl acrylate ((曱(dicyclopentadienyl oxyethyl acrylate) (for example, FANCRYL FA-512A manufactured by Philip Chemical Industries, Ltd.), dicyclopentenyl hydroxy acrylate (for example, FANCRYL FA-512M manufactured by 化立化成工业有限公司), Dicyclopentenyl acrylate (for example, FANCRYL FA-513A manufactured by Hitachi Chemical Co., Ltd.), dicyclopentyl methacrylate (for example, FANCRYL FA-513M manufactured by Hitachi Chemical Co., Ltd.), and amantadine acrylate (for example, Idemitsu Kosan) Company-made Adamantate AA), 2-methyl-2-carbobutyl acrylate (for example Adamantate 制 manufactured by Idemitsu Kosan Co., Ltd., 2-ethyl-2-adamantyl acrylate (such as Adamantate 制 manufactured by Idemitsu Kosan Co., Ltd.), 1-adamantyl methacrylate (for example, Adamantate AM manufactured by Idemitsu Kosan Co., Ltd.) (fluorenyl) acrylate compound having a C7 to C10 aliphatic ring; (iii) polypropylene glycol (meth) acrylate, polypropylene oxide modified (曱20 322746 201203238) acrylic acid decyl benzene vinegar, A Poly(epoxypropyl acrylate) modified (meth) acrylate such as oxydi-propanol (methyl) acrylate vinegar or ethoxydiethylene glycol (fluorenyl) acrylate, ethylene oxide Modified phenoxylated phosphoric acid (meth) acrylate, ethylene oxide modified butoxylated acid (fluorenyl) acrylate and epoxy ethoxide modified octyloxyphosphoric acid (mercapto) acrylate a C2 or C3 alkylene oxide modified (meth) acrylate compound such as an ethylene oxide modified (meth) acrylate; (iv) a monofunctional (fluorenyl) acrylate other than the above For example, benzyl (meth)acrylate, tetrahydroanthracene (meth)acrylate, Acrylic acid, phenyl glycidyl (mercapto) acrylic acid vinegar, 2-hydroxypropyl (meth) acrylate, etc. 3 has a (mercapto) acrylonitrile group (methyl When the ultraviolet curable resin composition of the present invention forms a compact disc (for example, a Blu-ray disc) as a light-transmitting layer, it has a function of improving mechanical properties (or vice versa, the amount of warpage, etc.). For example, An interface layer formed on the organic dye recording layer in an optical disc having an organic dye recording layer (for example, a Blu-ray disc), in a direct contact manner, in the boundary layer (10), the cured layer of the external hardening resin The formed disc can play the above functions. Among the above, (5) C5 to C18 (preferably C7 to C18) burnt vinegar has the effect of lowering the modulus of elasticity of the cured resin composition of the present invention, and the same can be used for the test of the present invention. The hardened material is preferably exemplified by the following (meth) acrylate monomer (C-3) having 2 to 6 (meth) acrylonitrile groups 322746 21 201203238 acid ester monomer. A polyfunctional (meth) acrylate monomer. (i) as a component (C-3), a (mercapto)propionate monomer containing two (meth)acryloyl groups: Cyclohexane-1,4-diethanol di(methyl) ) decyl acrylate, cyclohexanol 1,3-1,3-methanol bis(indenyl) acrylate, tricyclic terpine succinyl di(meth) acrylate (for example, KAYARAD R manufactured by Sakamoto Chemical Co., Ltd. -604, tricyclodecane dimethylol diacrylate, etc.), dioxanediol bis(indenyl) acrylate (for example, KAYARAD R_6〇4, diterpene diol 2 manufactured by Nippon Kayaku Co., Ltd.) Acrylate, etc., neopentyl glycol di(meth) acrylate, dicyclopentanyl di(meth)acrylate, 1,6-hexanediol bis(indenyl) acrylate, epoxy bromide 1,6-hexanediol bis(indenyl)acrylic acid, neopentyl glycol di(indenyl) acrylate, alkylene oxide modified neopentyl glycol di(meth)acrylic acid vinegar, Hydroxytrimethylacetic acid neopentyl glycol bis(indenyl) acrylate, polyethylene glycol di(methyl)propionate, polypropylene glycol bis(indenyl) acrylate, (poly) ethylene oxide (poly) ring The (poly)-based oxides such as oxypropene are modified to be a type of di(meth)acrylate, and the epoxy epoxide is modified to be a di(indenyl) acrylate. Preferred among the above are polyethylene oxide modified bisphenol A type bis(indenyl) acrylate, and more preferably ethylene oxide 5 to 15 mole modified bisphenol A type II (曱) Base) acrylate is preferred. Further preferred are also 2-ethyl-2-butyl-propylene glycol bis(indenyl) acrylate, 1,9-nonanediol bis(indenyl) acrylate and 1,1 fluorene decane diol. A diol (e.g., 22 22 322746 201203238 meth) acrylate having a carbon number of 7 to 18, such as di(meth)acrylate. These compounds have a machine rate which lowers the modulus of elasticity of the cured product of the resin composition, and can be used to make the cured product of the resin composition of the present invention a preferable elastic modulus. (ii) a (meth)acrylic acid S-containing monomer having three (indenyl) acrylonitrile groups as the component (C-3); and trishydroxypropylpropane tris(mercapto) acrylate, Trimethylol octane bis(indenyl) acrylate, trimethylol propyl polyethoxy tris(decyl) acrylate, trishydroxypropyl propane polypropoxy tri(decyl) acrylate, trishydroxyl Mercaptopropane polyethoxypolypropoxy tri(meth)acrylate, tris[(indolyl)propoxyethyl]trimeric isocyanate, pentaerythritol tris(mercapto)propyl acrylate, epoxy B Alkyl modified trimethylolpropane tri(meth)acrylate, propylene oxide modified trishydroxypropylpropane tri(meth)acrylate, and the like. (ill) as a (C-3) component, a (meth) acrylate group containing four (meth) acrylonitrile groups; 歹J quaternary tetradecyl alcohol polyethoxy tetra(indenyl) acrylic acid Vinegar, quaternary tetrapropyloxytetrakis(mercapto) acrylate, pentaerythritol tetrakis(fluorenyl) acrylate, bis(dimethylolpropane)tetrakis(meth)acrylate, dipentaerythritol tetrakis ) Acrylate and the like. (lv) As the (C-3) component, a (mercapto) acrylate monomer containing five (fluorenyl) acrylonitrile groups: dipentaerythritol penta (meth) acrylate or the like can be given. (v) (meth)acrylate monomer containing six (meth)acrylonitrile groups as the component (c_3): 23 322746 201203238 Dipentaerythritol hexa(methyl)propionate or the like can be mentioned. Further, the (meth) acrylate monomer used in the present invention may contain 7 or more (meth) acrylonitrile groups. In the (C-3) component ((meth) acrylate monomer) listed above, the (meth) acrylate monomer (c-3a) described in the following (丨) group together with the above (A) component When used, it will enhance the recorded characteristics of the resulting optical disc (such as Blu-ray disc) as one of the preferred (meth)acrylic acid vinegar monomers. (I) Group: (i) (meth)acrylic acid isooctyl vinegar, (meth)acrylic acid isovalerone, (decyl) decyl acrylate, isodecyl (mercapto) acrylate, (methyl) Acrylic acid octadecyl acrylate, hexadecyl (meth) acrylate, isodecyl (meth) acrylate, tridecyl (meth) acrylate, etc. 05 to C18 (C7 to C18 is preferred) Vinegar' and 2-ethyl-2-butyl-propylene glycol di(meth) acrylate, 1,9-nonanediol di(meth) acrylate and 1,10-decanediol (methyl) Acrylate or the like contains an alkylene glycol di(meth)acrylate having 7 to 18 carbon atoms. (ii) Polypropanol (mercapto) propylene fosphate, polypropylene glycol di(meth) acrylate, polypropylene oxide modified (mercapto) decyl phenyl acrylate, polyepoxy propylene modified new Pentyl glycol di(indenyl)propionic acid g, polyglycidil-modified 1,6-hexanediol di(methyl)propionate, polyepoxypyrene modified bisphenol a type II A propylene oxide-modified mono- or di(meth)acrylate such as (meth) acrylate or methoxytripropylene glycol (mercapto) acrylate. (iii) Polyethylene oxide modified bisphenol A type di(meth) acrylate, preferably ethylene oxide 5 to 15 mole modified bisphenol A type bis(indenyl) propyl 322746 24 201203238 Brewed 'better than ethylene oxide 10 molar modified bisphenol A type di(indenyl) acrylic acid. (iv) a polyethylene oxide modified phenol acrylate such as ethylene oxide 2 molar modified phenol acrylate or ethylene oxide 6 molar modified phenol acrylate, preferably ethylene oxide 2 Up to 10 moles of modified phenol acrylate. (v) Poly(ethylene glycol-tetramethylene glycol) diacrylate, poly(propylene glycol tetramethylene glycol) diacrylate, polytetramethylene glycol diacrylate, poly(ethylene glycol - tetrakisyl decyl diol) decyl methacrylate, poly(propylene glycol - tetramethylene glycol) methyl diacrylate, polytetramethylene glycol diacrylate, etc. containing tetramethylene glycol ( Methyl) acrylate, preferably polytetramethylene glycol bis(indenyl) acrylate or poly(C 2 to C 3 alkylene glycol - tetramethylene glycol) di(meth) acrylate (additional The polymerization is preferably from about 2 to about 20). The lactating lactone is modified early or the di(indenyl) acrylate is used as it is, depending on the situation, it can be returned to the ^ flat ^ > especially P buy early or better (meth) acrylate monomer (c_3a One, depending on the situation, gives the Blu-ray of the present invention a better quality and durability. - In the propylene-acrylic acid modified (meth)acrylic acid vinegar, the number of repeats of the propylene-acrylic acid-single (modified molar number) is preferably from about 2 to about 15. The number of (methyl, acrylonitrile groups in the molecule is higher than that of the township county (four). The quality of the horn is higher than that of the soil. For example, if the number of (meth) propylene bases in the knife is one, the number of the broth is one. In the case where the plural number (modified molar number) is preferably 2 or more, preferably the number of 'deuterated dimethyl groups' is 2, the number of propylene groups is preferably 7 or more, specifically It is preferably about 7 to 15 as a preferred epoxy-modified (meth)acrylic acid vinegar, for example, 322746 25 201203238, such as polypropylene glycol mono- or di-(meth) acrylate, polypropylene oxide modified Phenylphenyl (meth)acrylate or methoxytripropylene glycol (meth) acrylate or the like. The polypropylene glycol (mercapto) acrylate may, for example, be BLEMMERrtm AP-150 (propylene glycol unit repeat number 3), ap_4 〇〇 (propylene glycol unit repeat number 6), and AP-550C propylene glycol unit repeat number 9 manufactured by Oyster Sauce Co., Ltd. In addition, as the polypropylene glycol di(meth)propionate, for example, FANCRYLrtmFA-P240A (propylene glycol unit repeat number 7) and FA-P270A (propylene glycol unit repeat number 12) manufactured by Hitachi Chemical Co., Ltd. may be mentioned as Polypropylene oxide modified (mercapto) decyl phenyl acrylate, for example, may be exemplified by East Asia Synthetic Co., Ltd. (glycidrene firing unit repeat number 2. 5), Fr〇ntierRTMNP-5P (epoxypropylidene unit repeat number 5) manufactured by First Industrial Pharmaceutical Co., Ltd., and as a helium-based dipropylene glycol (fluorenyl) acrylate, for example, Xinzhongcun Chemical Corporation 1 NK Ester AM-30PG (propylene glycol unit repeat number 3) and the like. More preferably, polypropylene glycol bis(indenyl) acrylate such as FA-P270A having a diol unit repetition number of about 12 can obtain more excellent recording characteristics. In addition, the (meth) acrylate ((: _33), the (meth)acrylic acid C5 to C8 alkyl ester and the carbon number 7 to 18 alkylene glycol di(meth) acrylate are also It is one of the preferred (meth) acrylate monomers. These can recognize excellent recording signal characteristics and durability ◎ among these, more preferably (?) acrylate C10 to C15 alkyl ester, Further, (meth)acrylic acid vinegar is further preferably used. Further, the (meth) acrylate monomer (c-3a) of the above (I) group can be used in combination with the above component (A) to obtain the resin composition of the present invention. The modulus of elasticity of the cured product is the preferred modulus of elasticity (25 ° C) of the present invention, such as 〇. 〇1 to 4〇Mpa, 322746 26 201203238, preferably 0. 01 to less than 10 MPa, more preferably 〇 至 1 to 9 5 MPa. range. - the modulus of elasticity of the cured layer of the resin composition of the present invention at 25 ° C, adjusted to the above preferred 0. When the thickness is from 01 to 40 MPa, the optical disk having the hardened layer on the interface layer laminated on the organic dye recording layer has better recording characteristics. The (meth) acrylate monomer (c-3a) of the group (I) may be used in a range of from about % to about 60%, preferably from 10 to 60%, more preferably 20%, based on the total amount of the resin composition. It is 60%, and more preferably 30 to 60%. Further, among the above components (C-3), the following (meth) acrylate monomer (c-3b) can be used as needed. Group (II): Dicyclopentenyloxyethyl (meth)acrylate (or dicyclopentadienyloxyethyl (decyl) acrylate), 1,6-hexanol- (曱) Base) Acetic acid vinegar, dipropanol di(methyl) propylene vinegar or tripropylene glycol di(meth) acrylate. The (meth) acrylate monomer (c-3b) of the above group (II) may be different from the above-mentioned (A) for use, and may be combined with the above (C_2) component or the above (c-3b) Either or both of them can be used to reduce the change in the elastic modulus of the cured product due to temperature change to obtain a hardened material having an appropriate hardness. The (meth) sulphuric acid vinegar monomer (c-3b) of the group (II) can be used in the range of about 60% by weight based on the total amount of the resin composition. It is preferably from about 1% to about 50%. Preferred examples of the component (C) include a C5 to C18 alkyl (meth)acrylate and a 5 to 15 molar modified bisphenol a type II (A 322746 27 201203238) acrylate. And dicyclopentadienyloxyethyl (meth)acrylate. More preferably, the resin composition of the present invention contains at least one selected from the group consisting of 50 to 100% of the component (C). In the resin mixture of the present invention, these (C) components may be used singly or in combination of two or more kinds in any ratio. The content of the component (C) in the ultraviolet curable resin composition is usually 90% or less, preferably 80% or less, more preferably 70% or less, still more preferably 55% or less. Although the component (c) may also be 〇%, it is preferred to contain the component (C). In the case where the component (C) is contained, it is more than 0%, preferably 40% or more, and preferably 30 to 80% or 40 to 70%. Further, in the case where (C-1) and (C-2) are used in combination as the component (C), usually (C-1) and/or (C-2) are each (for the 〇 component of 1 〇〇 by weight of 5 to 50 parts by weight 'preferably, about 10 to 30 parts by weight, and (C-3) is 20 to 80 parts by weight, preferably 25 to 75 parts by weight, based on 1 part by weight of the component (C). One of the preferable resin compositions is that the ultraviolet curable resin composition for a photovoltaic disc contains the component (A) and the (meth) acrylate (C) contains an amino phthalate acrylate. (c_2), at least one selected from the group consisting of the (meth) acrylate monomer (c_3a) u of the above U) group and the (nonyl) acrylate monomer (c_3b) of the above (11) group The total amount of the component (A), the component (c-2), the component (c-3a), and the component (c-3b) is -99%, more preferably 8 to 99% of the total amount of the resin composition. More preferably, it is 90 to 99%, and the photopolymerization initiator (B) is 1 to, and the component (C) or the additive other than the above is 〇 to 20%. In the present invention, the resin composition (A) component, (B) component, and (the content ratio of the bismuth component, the total amount of the resin composition of the present invention is usually 28 322746 201203238 10 to 95% by weight (below) % is not particularly indicated as % by weight), (B) is 1 to 20%, and (C) is 4 to 89%, preferably (A) is 20 to 95% by weight, and (B) is 1 Up to 20% and (C) component is 4 to 79%, more preferably (A) component is 30 to 95% by weight, (B) component is 1 to 10%, and (C) component is 4 to 69%, and further Preferably, the component (A) is 40 to 95% by weight, the component (B) is 1 to 10%, and the component (C) is 4 to 59%, and most preferably the component (A) is 45 to 95% by weight, (B) The composition is 1 to 10% and the component (C) is 4 to 54%. Several preferred examples of the resin composition of the present invention are exemplified below. 0 (i) Containing the components (A) and (B) And (C) the composition of the component (C). (ii) The content ratio of the component (A), the component (B), and the component (C) is (A) component, (B) component, and (C) component 3 The aspect described in the above (i) is a ratio of any of the ratios. (iii) (A) Choose caprolactone modified hydroxyethyl (meth) acrylate, caprolactone modified hydroxybutyl (meth) acrylate, caprolactone modified hydroxy tridecyl acetate neopentyl glycol bis (indenyl) acrylate The above (i) or (ii) of at least one of the group consisting of ester, caprolactone modified tris(propylene methoxyethyl) trimer isocyanate and caprolactone modified dipentaerythritol hexa (meth) acrylate (iv) Containing an epoxy group selected from the group consisting of epoxy (meth) acrylate (C-1), urethane acrylate (C-2), and (fluorenyl) acrylate Any one of the above (i) to (iii) as a component (C), at least one of the groups (C-3) 29 322746 201203238. (v) comprising an amino phthalate ester ( The thiol acrylate (C-2) is the aspect described in the above (iv) as the component (C). (vi) The amino phthalate acrylate (c-2) content, for the present invention The total amount of the resin composition is greater than 〇%, and 15% or less of the above (i) to (iv). (vii) urethane (mercapto) acrylate (c-2) ) The above-mentioned (v) or (vi) aspect of the urethane acrylate obtained by the reaction of a polyester polyol or a polyether polyol, a polyisocyanate, and 2-hydroxyethyl acrylate is used. (viii) Amine group The phthalate acrylate (c_2) is the above-mentioned (iv) to (vi) obtained by using a poly-C2-C6 glycerol, a polyisocyanate, and a hydroxy (meth) acrylate compound. The state of the record. (ix) The polyisocyanate is isophorone diisocyanate as described in the above (vii) or (viii). (X) The aspect in which the (meth) acrylate compound is a hydroxy C2 to C4 alkyl (meth) acrylate, as described in any one of the above. (xi) The aspect described in any one of (i) to (X) containing the (meth) acrylate monomer (C-3) as the component (C). (xu) containing at least one selected from the group consisting of the (meth) acrylate monomer (c-3a) of the above (I) group and the (meth) acrylate monomer (c-3b) of the above (II) group. An aspect described in the above (xi) of the above (meth) acrylate monomer (C-3). 322746 30 201203238 (X111) The aspect described in the above (xii) containing at least one of the above (fluorenyl) acrylate monomers (c-3a). (xiv) A C5 to C18 alkyl (meth)acrylate is contained as the above (xii) or (xiii) of the above (c-3a). (xv) Containing (indenyl)acrylic acid ci〇 to ci5 alkyl ester as the above (xiv) aspect of the above (c-3a). (xvi) The propylene oxide-modified single or bis(indenyl) acrylate is used as the aspect described in any one of the above (xii) to (xv) of the above (c-3a). (xvii) 5 to 15 moles of modified bisphenol a type bis(meth)acrylate containing polyethylene oxide as the above (xi) to (xvi). (xviii) The above-described (xii) to (χνΠ) aspect of the (meth) acrylate monomer containing at least one of the aforementioned (π) groups. (xix) The dicyclopentadienyloxyethyl (meth)acrylate is contained as described in the above (xviii) of the above (c-3b). (XX) The above-mentioned (xii) of the total amount of the resin composition of the present invention contained in at least one selected from the group consisting of (c-3a) and (c-3b) To (xix) any of the aspects described. (xxi) The aspect described in the above (XX) wherein the content of at least one selected from the group consisting of (c-3a) is 20 to 50%. (xxi i) The aspect described in the above (XX) wherein the content of at least one selected from the group consisting of (c-3a) is 30 to 50%. (xxiii) containing C5 to C18 ester of (meth)acrylic acid, 5 to 15 molar modified bisphenol A type bis(indenyl) acrylate, (decyl) propyl = 322746 31 201203238 acid bicyclic At least one selected from the group consisting of pentadienyloxyethyl ester and polypropylene glycol bis(indenyl) acrylate as the above (meth)propionate monomer (C-3)' c) The total amount of the components is from 50% to 1% by weight of any of the above (xii), (XX) to (xxii). (xxiv) The aspect described in the above (xxiii) containing the (meth)acrylic acid C5 to decyl 8 alkyl ester as the component (c). (xxv) The (meth)acrylic acid C5 to ci8 alkyl ester is the one described in (meth)acrylic acid dicamba (xxiv). (xxvi) The total amount of the resin composition contained in the present invention is 〇. The above-mentioned (i) to (χχν) 之 of 1 to 3% of the hindered amine compound described later. (xxvii) The elastic modulus of the cured product of the resin composition of the present invention is 25 〇c. 01 to 40 MPa of any of the above (i) to (xxvi). (xxviii) The modulus of elasticity of the cured product of the resin composition of the present invention is 〇. 01 to 9. 5 MPa of any of the above (i) to (xxvi). The ultraviolet curable resin composition for optical discs 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 fluorescing agent depending on the requirements. Additives such as a light whitening agent, a light stabilizer (for example, a hindered amine compound), and a filler. Specific examples of the hindered amine compound include, for example, L 2, 2, 6, 6-pentamethyl to 4-piperidinol, 2, 2, 6, 6-tetramethyl-4-piperidinol, (A) I) 2, 2, 6, 6-pentamethyl-4-pyridyl acrylate (manufactured by ADEKA Co., Ltd., LA-82). The blending amount of these additives is in the range of from about 〇 to about 1% by weight based on the total amount of the resin composition of the present invention. 32 322746 201203238 A hindered amine compound is a preferred additive - for the present invention. The total amount of the resin composition is at 0. The range of 001 i 10%' is preferably added in the range of 〇 - to 3%. The ultraviolet curable resin for optical disks of the present invention can be obtained by mixing and dissolving each of the above components at a normal temperature to 8 Torr, and removing the inclusions by filtration or the like as needed. In view of the coating property of the resin composition in the present invention, it is preferred to appropriately adjust the blending ratio of the components so as to have a viscosity at 25 ° C of 30 to 2000 mPa · s. The ultraviolet curable resin composition for an optical disk of the present invention can be suitably used as a coating agent for a light-transmitting layer on a laser incident side such as a Blu-ray disk. Specifically, the composition is coated by a method such as spin coating, 2P method, roll coating method, screen printing method, or the like by a method in which the film thickness of the applied resin is 1 to 1 〇〇 " m On the disc substrate. After coating, it is hardened by irradiation with ultraviolet light or near ultraviolet light (near wavelength of 200 to 400 nm) on one side or both sides. The irradiation amount is preferably about 50 to 1,500 mJ/cm2, and more preferably about 1 to 1000 mJ/cm2. Because ultraviolet and near-ultraviolet light radiation hardens, there is no limit to the light source if UV or near-ultraviolet light is used, such as low-pressure, high-pressure or ultra-high pressure mercury lamps, metal toothed lamps, (pulsed) xenon arc lamps or Electrodeless lamps and so on. The light transmissive layer is composed of a second resin layer formed on the recording layer or the interface layer and a second resin layer formed on the surface opposite to the recording layer or the interface layer side as viewed from the first resin layer. The ultraviolet curable resin composition of the present invention can be suitably used for the first resin layer described above. In this case, the thickness of the aforementioned first resin layer is usually from lem to 33 322746 201203238 50#m, preferably to 40/im, and more preferably from 10/^ to 3〇m. In addition, the thickness of the second resin layer is usually from 5 〇wm to the case where the light-transmitting layer (protective layer) is composed of two layers, and a specific method for forming the light-transmitting layer (protective layer), specifically, coating The film thickness of the resin is 1 to 30 // in, for example, by spin coating, 2p method, roll coating method, screen printing method, and the composition is used as the first resin layer on the optical disk substrate. After coating, the one side or both sides are hardened by irradiation with ultraviolet light and near ultraviolet light (wavelength of 2 〇〇 to 400 nm). The irradiation amount is preferably from about 5 Torr to 1,500 mJ/cm 2 ', more preferably from about 100 to about 1 〇〇〇mj/cm 2 . After the hardening, the composition is applied to the optical disk substrate as a second resin layer by any method such as spin coating, 2P method, roll coating method or screen printing method in a film thickness of 100 m. After coating, the one side or both sides are hardened by irradiation with ultraviolet light and near ultraviolet light (near the wavelength of 200 to 400 nm). The irradiation amount is preferably from about 50 to 1,500 mJ/cm 2 ', particularly preferably from about 10 μm to about 1 μm/cm 2 . Furthermore, since ultraviolet light and near-ultraviolet light irradiation form hardening, there is no limitation light source if ultraviolet or near-ultraviolet light is used, such as low pressure, high pressure or super pressure mercury lamp, metallization lamp, (pulse) gas. Arc lamps or electrodeless lamps, etc. According to the optical disc of the present invention obtained by the above method, the optical disc has at least a support substrate having a grooved carbon, a reflective layer formed on the groove, and an organic pigment formed on the reflective layer (usually An azo dye) δ recorded layer: an interface layer (dielectric layer) formed on the recording layer of § hai, and a cured layer formed on the interface layer by the resin composition of the present day (transparent layer) ). 322746 34 201203238 In the optical disk of the present invention, a hardened layer of a resin composition is added to the hardened layer of the resin composition of the present invention. In this case, the light transmissive layer is formed by two layers of a hardened layer of the resin composition of the present invention and a stone refining layer of another resin composition. In the optical disk of the present invention, it is necessary to form a hardened layer directly on the resin layer of the present invention on the interface layer formed on the recorded layer containing an organic dye (usually an azo dye). The effect of the invention. The interface layer is a layer formed of an inorganic compound containing a metal atom such as a complex of a metal atom such as zinc, as is well known in the art. [Embodiment] The following is more specifically described by the embodiments of the present invention, and the present invention is not limited to the embodiments. The components shown in Table 1 were obtained in the proportions (parts by weight) shown in Table 1, and the ultraviolet curable resin compositions of Examples 1-5 to 5 were uniformly prepared. 35 322746 201203238
表1樹脂組成物及評彳ITable 1 Resin Composition and Evaluation I
另外表1中以簡稱表示之各成分如下述所示。 SE 495·己内酯改質（2莫耳改質）丙烯酸羥乙酯， 322746 36 201203238 公司製 HX-620:己内酯改質（4莫耳改質）羥基三甲基乙酸新戊二 醇二丙烯酸酯，日本化藥公司製 DPCA-120:己内酯改質（6莫耳改質）二季戊四醇六丙烯酸 酯，日本化藥公司製 UA-1 :聚四亞曱基二醇（分子量850)、異佛爾酮二異氰酸 酯、丙烯酸2-羥乙酯三成分以莫耳比1 : 2 : 2反應所得之 胺基曱酸酯丙烯酸酯 BPE-10 :環氧乙烷10莫耳改質雙酚A型二丙烯酸酯（第一 工業製藥公司） FA-512A :丙烯酸二環戊二烯氧基乙酯酸（日立化成工業公 司） FA-P270A:聚丙二醇二丙烯酸酯（日立化成工業公司，商品 名：FANCRYL RTMFA-P270A) IRGACURE 184 :卜羥基環己基苯基酮（汽巴精化有限公司 製） LA-82 :受阻胺（曱基丙烯酸1，2,2,6,6-五曱基-4-哌啶基 酯：旭電化公司） PMP : 4-氫硫基酚 以所得之本發明紫外線硬化樹脂製作具有色素記錄層 藍光光碟並對此做特性評價。 具有色素記錄層的藍光光碟之製作 1.在具有磁軌距0.32//Π1溝槽，直徑12cm、厚度1.1mm之 聚碳酸酯基板以膜厚成為lOOnm的方式濺鍍銀合金形成反 37 322746 201203238 射層。之後，將偶氮色素溶於TFP(四氟丙醇）形成之色素 溶液以旋轉塗佈法塗佈，在8(TC乾燥30分鐘形成色素記 錄層。再來，以膜厚成為約15nm的方式濺鍍ZnS_Si〇2(莫 耳比80 : 20)形成界面層，藍光光碟基板即製作完成。 2. 將藍光光碟基板界面層朝上放置在旋轉台上，以可覆蓋 内徑11 · 5 mm之圓形蓋進行處理，再將本發明紫外線硬化樹 脂2. 0g供給到中心部的蓋上。 3. 配合本發明紫外線硬化型樹脂組成物的黏度，以Moor卵 至1500rpm之速度範圍旋轉塗佈4到7秒，以各塗佈膜厚 成為約25/im之方式塗佈。旋轉塗佈結束時以氙氣閃光燈 進行兩次照射，使之硬化至表面無流動性的程度。 4. 使用高壓水銀燈，從上面以400mJ/cm2照射3秒使本發明 紫外線硬化型樹脂組成物完全硬化。 5. 將硬化後的本發明紫外線硬化型樹脂組成物朝上放在旋 轉台上，以可覆蓋内徑ll.5mm之圓形蓋進行處理，再將 BRD-864C日本化藥（株）製藍光光碟用透光層樹脂）3· 〇g供 給到中心部的蓋上。 ’ 6. 以1500:rpm的速度進行旋轉塗佈4到7秒，以膜厚成為 75ym的方式塗佈。旋轉塗佈結束時以氙氣閃光燈進行兩 次照射’使之硬化至表面無流動性的程度。 7·使用高壓水銀燈，從上面以4〇〇mJ/cm2照射3秒使brd -864元全硬化，即完成本發明之藍光光碟的製作。 (i)藍光光碟耐久性試驗前後之記錄信號特性 本發明的光碟在80t、85%RH環境下放置250小時。 322746 38 201203238 以PULSTEC製藍光光碟資料信號測定震置__ 1 〇 〇 〇、線速 度4. 92m/s、播放輸出0. 30mW、T連續紀錄（1T長=〇. 8〆m) 記錄之’駭咐久性試驗前後藍光光碟的記錄錢特性（抖 動（jitteO值），以下述基準崎評價。㈣值為光碟電氣 信號之-，此數值越高代表藍光光碟的信號資料劣化，若 在10%以上的話就會變得難以讀寫資料。In addition, each component shown by the abbreviation in Table 1 is as follows. SE 495·Caprolactone modification (2 mole modification) hydroxyethyl acrylate, 322746 36 201203238 HX-620 made by the company: caprolactone modification (4 mole modification) hydroxytrimethyl acetic acid neopentyl glycol Diacrylate, DPCA-120 manufactured by Nippon Kayaku Co., Ltd.: caprolactone modified (6 molar modified) dipentaerythritol hexaacrylate, UA-1 manufactured by Nippon Kayaku Co., Ltd.: polytetradecyl diol (molecular weight 850) , Isophorone diisocyanate, 2-hydroxyethyl acrylate three components are obtained by reacting molar ratio 1:2:2 to give amino phthalate acrylate BPE-10: ethylene oxide 10 molar modified double Phenol A-type diacrylate (First Industrial Pharmaceutical Co., Ltd.) FA-512A: Dicyclopentadienyloxyethyl acrylate (Hitachi Chemical Industry Co., Ltd.) FA-P270A: Polypropylene glycol diacrylate (Hitachi Chemical Industry Co., Ltd., commodity Name: FANCRYL RTMFA-P270A) IRGACURE 184: Hydroxycyclohexyl phenyl ketone (manufactured by Ciba Specialty Chemicals Co., Ltd.) LA-82: Hindered amine (1,2,2,6,6-pentamethylene thiol) 4-piperidyl ester: Asahi Kasei Co., Ltd.) PMP: 4-hydrothiophenol is prepared by using the obtained ultraviolet curable resin of the present invention. Recording layer Blu-ray discs and characterization of this. Production of a Blu-ray Disc with a Pigment Recording Layer 1. A polycarbonate substrate having a track pitch of 0.32//Π1, a diameter of 12 cm, and a thickness of 1.1 mm is sputtered with a silver alloy to form a reverse 37 322746 201203238 Shot layer. Thereafter, the dye solution in which the azo dye was dissolved in TFP (tetrafluoropropanol) was applied by a spin coating method, and the dye recording layer was formed by drying at 8 (TC for 30 minutes. Further, the film thickness was about 15 nm. Sputtering ZnS_Si〇2 (Mohr ratio 80: 20) forms the interface layer, and the Blu-ray disc substrate is completed. 2. Place the Blu-ray disc substrate interface layer up on the rotating table to cover the inner diameter of 11 · 5 mm The round lid was treated, and then 2.0 g of the ultraviolet curable resin of the present invention was supplied to the lid of the center portion. 3. With the viscosity of the ultraviolet curable resin composition of the present invention, the coating was carried out at a speed range of Moor eggs to 1500 rpm. In 7 seconds, the coating film thickness was applied to about 25/im. At the end of the spin coating, the coating was performed twice with a xenon flash lamp to harden the surface to a degree of no fluidity. 4. Using a high pressure mercury lamp, The ultraviolet curable resin composition of the present invention is completely cured by irradiating with 400 mJ/cm 2 for 3 seconds from above. 5. The cured ultraviolet curable resin composition of the present invention is placed on the rotary table so as to cover the inner diameter ll. 5mm round cover is carried out And then by Nippon Kayaku BRD-864C (Ltd.) resin light-transmitting layer with a Blu-ray Disc) 3. 〇g fed to the center portion of the cover. 6. Spin coating was performed at a speed of 1500: rpm for 4 to 7 seconds, and the film thickness was 75 μm. At the end of the spin coating, two irradiations were carried out with a xenon flash lamp to harden it to such an extent that the surface had no fluidity. 7. Using a high-pressure mercury lamp, the brd-864 element was fully hardened by irradiating with 4 〇〇mJ/cm2 for 3 seconds from above, that is, the production of the Blu-ray disc of the present invention was completed. (i) Recording signal characteristics before and after the Blu-ray disc durability test The optical disc of the present invention was left in an environment of 80 t, 85% RH for 250 hours. 322746 38 201203238 Measured by the PULSTEC Blu-ray Disc data signal __ 1 〇〇〇, line speed 4.92m / s, playback output 0. 30mW, T continuous record (1T length = 〇. 8〆m) Record ' The recording characteristics of the Blu-ray disc before and after the durability test (jitter (jitteO value) is evaluated by the following reference. (4) The value of the optical signal of the optical disc - the higher the value, the deterioration of the signal data of the Blu-ray disc, if 10% If you do the above, it will become difficult to read and write data.
Jitter值評價 〇·· jitter 值未達 1〇°/0 X…jitter值在10%以上 (i i)本發明樹脂硬化層之彈性率的測定 彈性率以JIS K 7244-5為基準，以動態黏彈性測定法 測疋之。亦即，本發明樹脂組成物以硬化後的厚度為lmm 之方式形成塗膜’使用Fusion lamp D bulb，在以lJ/cm2 的加總光量硬化後，製作長5cm、寬lcm、厚imin大小之試 驗片，以SII NanoTechnology公司製之黏彈性測定裝置 DMS1600進行測試。測定以彎曲模式進行，振幅荷重1〇mN、 週波數1Hz、昇溫速度2°C/分之條件在-5(TC至200°C範圍 進行測定。 (iii)本發明樹脂硬化物層405nm光源之透光度： 製成100的硬化膜，使用分光光度計（u一3310、Jitter value evaluation 〇·· jitter value is less than 1〇°/0 X...jitter value is 10% or more. (ii) Elasticity of the resin hardened layer of the present invention is measured. The elastic modulus is based on JIS K 7244-5, and is dynamically adhered. The elastic measurement method measures the sputum. That is, the resin composition of the present invention is formed into a coating film having a thickness of 1 mm after hardening. Using a Fusion lamp D bulb, after hardening at a total amount of light of 1 J/cm 2 , a length of 5 cm, a width of 1 cm, and a thickness of imin are produced. The test piece was tested by a viscoelasticity measuring device DMS1600 manufactured by SII NanoTechnology. The measurement was performed in a bending mode, and the conditions of the amplitude load of 1 〇 mN, the number of cycles of 1 Hz, and the rate of temperature increase of 2 ° C/min were measured in the range of -5 (TC to 200 ° C. (iii) The resin cured layer of the present invention was a 405 nm light source. Transmittance: A cured film made of 100, using a spectrophotometer (u-3310,
Hitachi High-Technologies 製），測定求得該膜在 4〇5nm 的吸收值。其結果為實施例1至5的樹脂組成物之硬化物 不論哪一者的透光度都為85%以上。 由表1的結果可知，含有具式（1)表示構造的（曱基） 322746 39 201203238 丙烯酸酯之實施例1至5的本發明樹脂組成物，在耐久性 試驗前後都有良好的紀錄信號特性。 【圖式簡單說明】 無。 【主要元件符號說明】 無。 40 322746The absorption value of the film at 4 〇 5 nm was determined by Hitachi High-Technologies. As a result, the cured product of the resin compositions of Examples 1 to 5 had a transmittance of 85% or more. As is apparent from the results of Table 1, the resin compositions of the present invention containing Examples 1 to 5 of the oxime (322) 39 201203238 acrylate having the structure represented by the formula (1) had good recording signal characteristics before and after the durability test. . [Simple description of the diagram] None. [Main component symbol description] None. 40 322746