TW201213482A - Light-curing composition for use in transparent pressure-sensitive adhesive sheet - Google Patents

Light-curing composition for use in transparent pressure-sensitive adhesive sheet Download PDF

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Publication number
TW201213482A
TW201213482A TW100131485A TW100131485A TW201213482A TW 201213482 A TW201213482 A TW 201213482A TW 100131485 A TW100131485 A TW 100131485A TW 100131485 A TW100131485 A TW 100131485A TW 201213482 A TW201213482 A TW 201213482A
Authority
TW
Taiwan
Prior art keywords
meth
adhesive sheet
acrylate
composition
transparent adhesive
Prior art date
Application number
TW100131485A
Other languages
Chinese (zh)
Other versions
TWI515281B (en
Inventor
Kenichi Nakanishi
Atsushi Umino
Kazuhiro Sasaki
Yuta Takeuchi
Original Assignee
Showa Denko Kk
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Showa Denko Kk filed Critical Showa Denko Kk
Publication of TW201213482A publication Critical patent/TW201213482A/en
Application granted granted Critical
Publication of TWI515281B publication Critical patent/TWI515281B/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing atoms other than carbon or hydrogen
    • C08L23/0869—Copolymers of ethene with unsaturated hydrocarbons containing atoms other than carbon or hydrogen with unsaturated acids, e.g. [meth]acrylic acid; with unsaturated esters, e.g. [meth]acrylic acid esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
    • C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/202—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B32B2457/208—Touch screens

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)

Abstract

The purpose of the present invention is to provide: a light-curing composition for use in a transparent pressure-sensitive adhesive sheet that is highly transparent and well suited to punching, has a strongly cohesive pressure-sensitive adhesive-agent layer, and does not corrode a conductive layer of a transparent conductive film even if bonded directly to the surface of said conductive layer; and a pressure-sensitive adhesive sheet. The present invention is a light-curing composition for use in a transparent pressure-sensitive adhesive sheet, said composition comprising: (A) a (meth)acryl-group-containing polyolefin compound that has a weight-average molecular weight of 10,000-300,000; (B) a (meth)acrylic acid ester that has a hydroxyl group; (C) photopolymerizable monomers other than (meth)acrylic acid esters having hydroxyl groups; and (D) a photopolymerization initiator. Said light-curing composition for use in a transparent pressure-sensitive adhesive sheet is characterized in that carboxyl-group-containing monomers constitute no more than 0.1% of the mass of the (C) photopolymerizable monomers.

Description

201213482 六、發明說明： 【發明所屬之技術領域】 本發明係關於光硬化性透明黏著薄片用組成物、將使 光硬化性透明黏著薄片用組成物硬化而得之光硬化性透明 黏著薄片使用於透明導電膜之貼合上爲其特徵之透明導電 膜固定用透明黏著薄片用組成物、使透明導電膜固定用透 明黏著薄片用組成物硬化而得之透明導電膜固定用透明黏 著薄片，及將透明導電膜固定用透明黏著薄片接著於透明 導電膜之導電層面上爲其特徵之層合體。 【先前技術】 近年來在行動電話、遊戲機器等之領域中逐漸開始搭 載觸控面板。觸控面板係將於表層具有ITO (氧化銦錫） 等之透明導電膜之透明基材或玻璃，與保護其之透明保護 薄片，再與液晶顯示器等之顯示裝置之光學構件，使用光 學用之透明黏著薄片貼合而成之層合體。 觸控面板中主要有以輸入時之壓力而檢測之電阻膜方 式之觸控面板與以輸入時之人體之靜電而檢測輸入場所之 靜電容量方式之觸控面板。靜電容量方式之觸控面板中， 透明導電膜之導電層面係與黏著薄片之黏著劑層表面相接 而固定。因此，透明導電膜之導電層面上因與黏著劑層接 觸，而引起因黏著劑所含之酸成分所造成之金屬之氧化反 應，故有導致導電機能降低之問題。因此，對透明導電膜 固定用之黏著薄片要求高防金屬腐蝕性。 -5- 201213482 具有防金屬腐蝕性之黏著薄片，既有提出含有防金屬 腐蝕劑之黏著薄片（例如，專利文獻1 )。又，亦有提出 對於黏著劑層之酸成分，藉由使其含有特定量之含氮原子 之成分，而使對透明導電膜之腐飩性降低之黏著薄片（例 如，專利文獻2 )。 然而，含有防金屬腐蝕劑之黏著薄片有因防金屬腐蝕 劑而在耐久性試驗中變色而使光學特性降低等之問題。又 ，含有特定量之含氮原子之成分的黏著薄片，因黏著劑層 中所含之酸成分，而有無法充分抑制ITO之電阻値上昇的 問題。 [先前技術文獻] [專利文獻] [專利文獻1]日本特開2006-45315號公報 [專利文獻2]日本特開2010-144002號公報 【發明內容】 [發明所欲解決之課題] 本發明所欲解決之課題在於提供將硬化而得之透明黏 著薄片即使直接貼合於透明導電膜之導電層面亦不會使導 電層腐蝕，且黏著劑層之凝集力、透明性、及沖裁加工性 皆優之光硬化性透明黏著薄片用組成物。並且，亦在於提 供該透明黏著薄片。 201213482 [用以解決課題之手段] 本發明者們以觸控面板用光硬化性透明黏著薄片所具 有之前述問題點爲背景，經過銳意硏討之結果，發現一種 配合有含有高分子量之（甲基）丙烯酸基（化學式：_ COCH= CH2 ' -COC(CH3)= ch2)之聚烯烴化合物、具有 羥基（化學式：-OH)之（甲基）丙烯酸酯、光聚合性單 體、及光聚合起始劑之光硬化性透明黏著薄片用組成物， 其中光聚合性單體所包含之羧基單體在所定量以下之光硬 化性透明黏著薄片用組成物，並使該光硬化性透明黏著薄 片用組成物硬化而得之光硬化性透明黏著薄片之透明性、 黏著性、及透明導電膜之防金屬腐蝕性皆爲良好，且基於 此知識見解進而完成本發明。 本發明爲如以下（1 )〜（11 )所示者。 (1 ) 一種光硬化性透明黏著薄片用組成物，其係含 有（A)重量平均分子量爲1萬〜3 0萬之含有（甲基）丙烯 酸基之聚烯烴化合物、（B)具有羥基之（甲基）丙烯酸 酯、（C)具有羥基之（甲基）丙烯酸酯以外之光聚合性 單體、及（D)光聚合起始劑而成之光硬化性透明黏著薄 片用組成物，其特徵爲，相對於（C)具有羥基之（甲基 )丙烯酸酯以外之光聚合性單體之全量，（C)具有羥基 之（甲基）丙烯酸酯以外之光聚合性單體所包含之含羧基 之單體爲0.1質量％以下。 (2 )如（1 )之光硬化性透明黏著薄片用組成物，其 係相對於光硬化性透明黏著薄片用組成物之全量，含有（ 201213482 A)重量平均分子量爲1萬〜3 0萬之含有（甲基）丙烯酸基 之聚烯烴化合物10〜50質量％、（B)具有羥基之（甲基） 丙烯酸酯1〜30質量％、 （C)具有羥基之（甲基）丙烯酸 酯以外之光聚合性單體20〜88質量％、及（D )光聚合起始 劑0.2〜5質量％而成。 (3 )如上述（1 )或（2 )之光硬化性透明黏著薄片 用組成物，其中（C)具有羥基之（甲基）丙烯酸酯以外 之光聚合性單體不含有含羧基之單體。 (4 )如上述（1 )至（3 )中任一項之光硬化性透明 黏著薄片用組成物，其中使（B)具有羥基之（甲基）丙 烯酸酯、及（C)具有羥基之（甲基）丙烯酸酯以外之光 聚合性單體聚合而得之聚合物之理論玻璃轉移溫度爲 0。(：~5 0。(：。 (5 )如上述（1 )至（4 )中任一項之光硬化性透明 黏著薄片用組成物，其中（C)具有羥基之（甲基）丙烯 酸酯以外之光聚合性單體爲單官能烷基（甲基）丙烯酸酯 及/或環狀烷基（甲基）丙烯酸酯。 (6 )如上述（1 )至（5 )中任一項之光硬化性透明 黏著薄片用組成物，其中（A)重量平均分子量爲1萬〜3 0 萬之含有（甲基）丙烯酸基之聚烯烴化合物係使聚烯烴聚 醇化合物、具有羥基之（甲基）丙烯酸酯、及於1分子中 具有2個以上異氰酸酯基之化合物反應而得之具有（甲基 )丙烯酸基之化合物。 (7 )如上述（1 )至（6 )中任一項之光硬化性透明 -8- 201213482 黏著薄片用組成物，其中酸價爲0.5 mgKOH/ g以下。 (8) —種透明導電膜固定用透明黏著薄片用組成物 ，其特徵爲使如上述（1)至（7)中任一項之光硬化性透 明黏著薄片用組成物硬化而得之光硬化性透明黏著薄片使 用於透明導電膜之貼合。 (9) 一種透明導電膜固定用透明黏著薄片，其特徵 爲使如上述（8)之透明導電膜固定用透明黏著薄片用組 成物硬化而得者。 (10) 如上述（9)之透明導電膜固定用透明黏著薄 片，其中凝膠分率爲80~100%。 (11) —種層合體，其特徵爲使上述（9)或（10) 之透明導電膜固定用透明黏著薄片接著於透明導電膜之導 電層面。 [發明之效果] 本發明之光硬化性透明黏著薄片用組成物由於在組成 物中含有高分子量之含有（甲基）丙烯酸基之聚烯烴化合 物，故使其硬化所得之黏著薄片之柔軟性、耐透濕性皆優 ，並且由於組成物中僅含有微量之羧基，可抑制所得之透 明黏著薄片之由酸成分所造成之透明導電膜之導電層面之 腐蝕，且由於組成物中含有具有羥基之（甲基）丙烯酸酯 ，所得之黏著薄片之凝集力與對基材之密著性優良。 【實施方式】 -9- 201213482 以下，詳細說明本發明。 〔光硬化性透明黏著薄片用組成物〕 本發明之光硬化性透明黏著薄片用組成物係含有（A )重量平均分子量爲1萬〜3 0萬之含有（甲基）丙烯酸基之 聚烯烴化合物、（B)具有羥基之（甲基）丙烯酸酯、（C )具有羥基之（甲基）丙烯酸酯以外之光聚合性單體、及 (D)光聚合起始劑而成。 ((A)含有（甲基）丙烯酸基之聚烯烴化合物） 作爲含有（甲基）丙烯酸基之聚烯烴化合物，只要係 具有聚烯烴骨架並更導入有（甲基）丙烯酸基者即可使用 。聚烯烴骨架可舉出聚乙烯、聚丙烯、乙嫌.丙烯共聚物 、丁二烯、異戊二烯、氫化聚丁二烯、氫化聚異戊二烯、 環烯烴等之骨架。由耐光性、透明性（非結晶性）、作業 性（液狀）之觀點，以氫化聚丁二烯、氫化聚異戊二烯骨 架爲佳。尙且，（甲基）丙烯酸基係指CH2 = CH-CO-或 CH2 = C(CH3)-CO·。 對聚烯烴導入（甲基）丙烯酸基之方法並非受到特別 限定者，可例示如對於分子末端等具有反應性之羥基之聚 烯烴使用（甲基）丙烯酸進行酯化，或，首先對於1分子 中具有2個以上之異氰酸酯基之異氰酸酯化合物加成聚烯 烴之羥基，藉由使異氰酸酯基與具有羥基之（甲基）丙烯 酸酯反應而（甲基）丙烯基化之方法》 -10- 201213482 其中，亦以使聚烯烴聚醇化合物與於1分子中具有2個 以上之異氰酸酯基之異氰酸酯化合物反應，其後再與具有 羥基之（甲基）丙烯酸酯進行胺基甲酸酯化反應而得之含 有（甲基）丙烯酸基之聚烯烴化合物，係由所得之黏著薄 片之凝集力爲高之觀點爲佳。 聚烯烴聚醇化合物係於1分子中具有2個以上之羥基者 ，但以具有2〜4個羥基爲佳。又，聚烯烴聚醇化合物之重 量平均分子量係以5,000~30,000爲佳，以1 0,000〜1 5,000爲 更佳。聚烯烴聚醇化合物之重量平均分子量若低於5,0〇〇 時，則有所得之含有（甲基）丙烯酸基之聚烯烴化合物之 分子量不會變高，而無法得到充分黏著薄片之強度的傾向 。又，聚烯烴聚醇化合物之重量平均分子量若比3 〇,〇〇〇還 高時，則有所得之含有（甲基）丙烯酸基之聚烯烴化合物 之分子量變得過高，而變得難以操作之傾向。 於1分子中具有2個以上異氰酸酯基之化合物，例如可 舉出，甲伸苯基二異氰酸酯、茬二異氰酸酯、二苯基甲烷 二異氰酸酯、六亞甲基二異氰酸酯、三甲基六亞甲基二異 氰酸酯、四甲基茬二異氰酸酯、異佛爾酮二異氰酸酯及此 等加氫物等之二異氰酸酯化合物。其中’由耐光性、反應 性控制容易度之觀點，以異佛爾酮二異氰酸酯爲佳。此等 於1分子中具有2個以上異氰酸酯基之化合物可單獨使用或 將2種類以上組合使用。於1分子中具有2個以上異氰酸醋 基之異氰酸酯化合物之使用量’係相對於聚烯烴聚醇100 質量份而言，以8〜35質量份爲佳，1〇〜30質量份爲較佳’ -11 - 201213482 11~25質量份爲更佳。於1分子中具有2個以上異氰酸酯基 之異氰酸酯化合物之使用量若少於8質量份時，因所得之 含有（甲基）丙烯酸基之聚烯烴化合物之分子量變得過高 而變得難以操作，異氰酸酯化合物之使用量若多於35質量 份時，則有因所得之含有（甲基）丙烯酸基之聚烯烴化合 物之分子量變得過低，而無法充分得到黏著薄片之強度的 傾向。 作爲與異氰酸酯基反應之具有羥基之（甲基）丙烯酸 酯，例如可舉出烷基之碳數爲2〜7之羥基烷基（甲基）丙 烯酸酯等，而此等之具體例可例示2-羥基乙基（甲基）丙 烯酸酯、2·羥基丙基（甲基）丙烯酸酯、4-羥基丁基（甲 基）丙烯酸酯、1，3-丁二醇（甲基）丙烯酸酯、1，4-丁二 醇（甲基）丙烯酸酯、1,6-己二醇（甲基）丙烯酸酯、3-甲基戊二醇（甲基）丙烯酸酯等，此等可單獨使用或將2 種以上組合使用。其中，由反應性之觀點，以2-羥基乙基 丙烯酸酯及2-羥基乙基甲基丙烯酸酯爲佳。具有羥基之（ 甲基）丙烯酸酯之使用量，係相對於聚烯烴聚醇100質量 份而言，以3~18質量份爲佳，4〜15質量份爲較佳，5〜13質 量份爲更佳。具有羥基之（甲基）丙烯酸酯之使用量若少 於3質量份時，則有不具有（甲基）丙烯酸基之烯烴化合 物存在之可能性，而黏著薄片之強度變低，具有羥基之（ 甲基）丙烯酸酯之使用量若多於18質量份時，導入於烯烴 之（甲基）丙烯酸基之量由於變得過多而有黏著薄片變硬 之傾向。 -12- 201213482 本發明之（A)含有（甲基）丙烯酸基之聚烯烴化合 物之（甲基）丙烯酸基之導入數，只要係於1分子中有1個 以上之（甲基）丙烯酸基即可，較佳爲1分子中爲1~2個。 (A)含有（甲基）丙烯酸基之聚烯烴化合物之分子 量，係以重量平均分子量爲1萬〜30萬爲佳，較佳爲2萬〜20 萬，更佳爲3萬〜10萬。重量平均分子量若未滿1萬，則由 於所得之黏著薄片之凝集力變低，而有黏著薄片之強度不 充分之可能性，故不佳。又，分子量若大於30萬時，光硬 化性透明黏著薄片用組成物之黏度由於變得過高而變得難 以操作且作業性顯著變差，故不佳。尙且，本發明之重量 平均分子量係使用凝膠滲透層析儀（昭和電工股份有限公 司製Shodex GPC-101)，以下述條件在常溫下測量.，使用 標準聚苯乙烯標準曲線所求得之値。[Technical Field] The present invention relates to a photocurable transparent adhesive sheet composition, and a photocurable transparent adhesive sheet obtained by curing a photocurable transparent adhesive sheet composition. a transparent conductive film, a transparent adhesive film fixing transparent adhesive sheet composition, a transparent conductive film fixing transparent adhesive sheet, and a transparent conductive film fixing transparent adhesive sheet obtained by curing the transparent conductive film fixing transparent adhesive sheet. The transparent adhesive film for fixing the transparent conductive film is then laminated on the conductive layer of the transparent conductive film. [Prior Art] In recent years, touch panels have been gradually installed in the fields of mobile phones, game machines, and the like. The touch panel is a transparent substrate or glass having a transparent conductive film such as ITO (Indium Tin Oxide) on the surface layer, and a transparent protective sheet for protecting the same, and an optical member for a display device such as a liquid crystal display, which is used for optical use. A laminate of transparent adhesive sheets. In the touch panel, there are mainly a touch panel in which a resistive film is detected by the pressure at the time of input, and a touch panel in which the electrostatic capacitance of the input place is detected by the static electricity of the human body at the time of input. In the electrostatic capacitance type touch panel, the conductive layer of the transparent conductive film is fixed to the surface of the adhesive layer of the adhesive sheet. Therefore, the conductive layer of the transparent conductive film is in contact with the adhesive layer, causing an oxidation reaction of the metal due to the acid component contained in the adhesive, so that the conductive function is lowered. Therefore, the adhesive sheet for fixing the transparent conductive film is required to have high metal corrosion resistance. -5- 201213482 Adhesive sheet having metal corrosion resistance is proposed, and an adhesive sheet containing a metal corrosion inhibitor is proposed (for example, Patent Document 1). Further, there has been proposed an adhesive sheet in which the acid component of the adhesive layer is contained in a specific amount of a nitrogen atom-containing component to reduce the rotability of the transparent conductive film (for example, Patent Document 2). However, the adhesive sheet containing the metal corrosion inhibitor has a problem of discoloration in the durability test due to the metal corrosion inhibitor and deterioration of optical characteristics. Further, the adhesive sheet containing a specific amount of a component containing a nitrogen atom has a problem that the resistance 値 of the ITO cannot be sufficiently suppressed due to the acid component contained in the adhesive layer. [PRIOR ART DOCUMENT] [Patent Document 1] JP-A-2006-45315 [Patent Document 2] JP-A-2010-144002 [Summary of the Invention] [Problems to be Solved by the Invention] The present invention The problem to be solved is to provide a transparent adhesive sheet which is hardened even if it is directly adhered to the conductive layer of the transparent conductive film, and does not corrode the conductive layer, and the cohesive force, transparency, and punching workability of the adhesive layer are Excellent light curable transparent adhesive sheet composition. Also, it is provided to provide the transparent adhesive sheet. 201213482 [Means for Solving the Problem] The present inventors have found that a kind of high molecular weight (A) is contained in the background of the above-mentioned problem of the photocurable transparent adhesive sheet for a touch panel. a polyolefin compound (chemical formula: _COCH=CH2 '-COC(CH3)= ch2), a (meth) acrylate having a hydroxyl group (chemical formula: -OH), a photopolymerizable monomer, and photopolymerization a composition for a photocurable transparent adhesive sheet of a photopolymerizable monomer, wherein the photopolymerizable monomer contains a carboxyl group monomer in a photocurable transparent adhesive sheet composition of a predetermined amount or less, and the photocurable transparent adhesive sheet is used. The transparency, the adhesion of the photocurable transparent adhesive sheet obtained by hardening the composition, and the metal corrosion resistance of the transparent conductive film are all good, and the present invention has been completed based on this knowledge. The present invention is as shown in the following (1) to (11). (1) A composition for a photocurable transparent adhesive sheet comprising (A) a (meth)acrylic group-containing polyolefin compound having a weight average molecular weight of 10,000 to 30,000, and (B) having a hydroxyl group ( A composition for a photocurable transparent adhesive sheet comprising (meth) acrylate, (C) a photopolymerizable monomer other than a hydroxyl group (meth) acrylate, and (D) a photopolymerization initiator; The (C) carboxyl group contained in the photopolymerizable monomer other than the (meth) acrylate having a hydroxyl group, (C) the total amount of the photopolymerizable monomer other than the (meth) acrylate having a hydroxyl group The monomer is 0.1% by mass or less. (2) The composition for a photocurable transparent adhesive sheet according to (1), which contains (201213482 A) a weight average molecular weight of 10,000 to 300,000 with respect to the total amount of the composition for a photocurable transparent adhesive sheet. 10 to 50% by mass of the (meth)acrylic group-containing polyolefin compound, (B) 1 to 30% by mass of the (meth) acrylate having a hydroxyl group, and (C) light other than the (meth) acrylate having a hydroxyl group The polymerizable monomer is 20 to 88% by mass, and (D) the photopolymerization initiator is 0.2 to 5% by mass. (3) The composition for a photocurable transparent adhesive sheet according to the above (1) or (2), wherein (C) the photopolymerizable monomer other than the (meth) acrylate having a hydroxyl group does not contain a monomer having a carboxyl group . The composition for a photocurable transparent adhesive sheet according to any one of the above (1), wherein (B) has a (meth) acrylate having a hydroxyl group, and (C) has a hydroxyl group ( The theoretical glass transition temperature of the polymer obtained by polymerizing a photopolymerizable monomer other than methyl) acrylate is zero. (5) A composition for a photocurable transparent adhesive sheet according to any one of the above (1), wherein (C) has a hydroxyl group other than (meth) acrylate The photopolymerizable monomer is a monofunctional alkyl (meth) acrylate and/or a cyclic alkyl (meth) acrylate. (6) The photohardening according to any one of the above (1) to (5) A composition for a transparent adhesive sheet, wherein (A) a (meth)acrylic group-containing polyolefin compound having a weight average molecular weight of 10,000 to 300,000 is a polyolefin polyol compound, and a (meth)acrylic acid having a hydroxyl group A compound having a (meth)acrylic group obtained by reacting an ester and a compound having two or more isocyanate groups in one molecule. (7) A photocurable transparent film according to any one of the above (1) to (6) -8- 201213482 A composition for an adhesive sheet, wherein the acid value is 0.5 mgKOH/g or less. (8) A composition for a transparent adhesive film for fixing a transparent conductive film, which is characterized by (1) to (7) above. The photocurable transparent adhesive sheet of any of the materials is hardened by the composition The adhesive sheet is used for bonding a transparent conductive film. (9) A transparent adhesive sheet for fixing a transparent conductive film, which is obtained by curing a composition for a transparent conductive film for fixing a transparent conductive film according to the above (8). (10) The transparent adhesive sheet for fixing a transparent conductive film according to the above (9), wherein the gel fraction is 80 to 100%. (11) A laminate which is characterized in that the above (9) or (10) The transparent adhesive film for transparent conductive film is attached to the conductive layer of the transparent conductive film. [Effect of the Invention] The composition for photocurable transparent adhesive sheet of the present invention contains a high molecular weight (meth)acrylic group in the composition. The polyolefin compound is excellent in flexibility and moisture permeability resistance of the adhesive sheet obtained by hardening, and since the composition contains only a trace amount of carboxyl groups, the transparency of the obtained transparent adhesive sheet by the acid component can be suppressed. Corrosion of the conductive layer of the conductive film, and since the composition contains a (meth) acrylate having a hydroxyl group, the cohesive force of the obtained adhesive sheet is excellent in adhesion to the substrate. EMBODIMENT OF THE INVENTION The present invention will be described in detail below. [Composition for photocurable transparent adhesive sheet] The composition for photocurable transparent adhesive sheet of the present invention contains (A) a weight average molecular weight of 10,000 to 3 a polyolefin polymer compound containing (meth)acrylic group, (B) a (meth) acrylate having a hydroxyl group, (C) a photopolymerizable monomer other than a (meth) acrylate having a hydroxyl group, and ( D) A photopolymerization initiator ((A) a polyolefin compound containing a (meth)acryl group). As a polyolefin compound containing a (meth)acryl group, as long as it has a polyolefin skeleton and is further introduced ( The methyl) acrylate base can be used. The polyolefin skeleton may be a skeleton of polyethylene, polypropylene, ethylene, propylene copolymer, butadiene, isoprene, hydrogenated polybutadiene, hydrogenated polyisoprene, cycloolefin or the like. From the viewpoints of light resistance, transparency (non-crystalline), and workability (liquid), hydrogenated polybutadiene or hydrogenated polyisoprene skeleton is preferred. Further, the (meth)acrylic group means CH2 = CH-CO- or CH2 = C(CH3)-CO. The method of introducing a (meth)acrylic group into a polyolefin is not particularly limited, and it can be exemplified by esterification of a polyolefin having a reactive hydroxyl group such as a molecular terminal using (meth)acrylic acid, or, firstly, in one molecule. Method for (meth)acrylation of an isocyanate compound having two or more isocyanate groups to form a hydroxyl group of a polyolefin by reacting an isocyanate group with a (meth) acrylate having a hydroxyl group -10-201213482 Further, the polyolefin polyol compound is reacted with an isocyanate compound having two or more isocyanate groups in one molecule, and then subjected to a urethanization reaction with a (meth) acrylate having a hydroxyl group. The (meth)acrylic-based polyolefin compound is preferably a viewpoint that the cohesive force of the obtained adhesive sheet is high. The polyolefin polyol compound is one having two or more hydroxyl groups in one molecule, but preferably having 2 to 4 hydroxyl groups. Further, the weight average molecular weight of the polyolefin polyol compound is preferably 5,000 to 30,000, more preferably 10,000 to 15,000. When the weight average molecular weight of the polyolefin polyol compound is less than 5%, the molecular weight of the obtained (meth)acrylic group-containing polyolefin compound does not become high, and the strength of the sufficient adhesive sheet cannot be obtained. tendency. When the weight average molecular weight of the polyolefin polyol compound is more than 3 Å and the enthalpy is high, the molecular weight of the obtained (meth)acrylic group-containing polyolefin compound becomes too high, and it becomes difficult to handle. The tendency. Examples of the compound having two or more isocyanate groups in one molecule include methylphenyl diisocyanate, decyl diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, and trimethylhexamethylene group. Diisocyanate, tetramethylguanidinium diisocyanate, isophorone diisocyanate, and diisocyanate compounds such as these hydrogenated products. Among them, isophorone diisocyanate is preferred from the viewpoints of light resistance and ease of control of reactivity. The compound having two or more isocyanate groups in one molecule may be used singly or in combination of two or more kinds. The amount of the isocyanate compound having two or more isocyanate groups in one molecule is preferably from 8 to 35 parts by mass, and from 1 to 30 parts by mass, based on 100 parts by mass of the polyolefin polyol. Good ' -11 - 201213482 11~25 parts by mass is better. When the amount of the isocyanate compound having two or more isocyanate groups in one molecule is less than 8 parts by mass, the molecular weight of the obtained (meth)acrylic group-containing polyolefin compound becomes too high, and it becomes difficult to handle. When the amount of the isocyanate compound used is more than 35 parts by mass, the molecular weight of the obtained (meth)acrylic group-containing polyolefin compound may be too low, and the strength of the adhesive sheet may not be sufficiently obtained. Examples of the (meth) acrylate having a hydroxyl group which is reacted with an isocyanate group include a hydroxyalkyl (meth) acrylate having an alkyl group having 2 to 7 carbon atoms, and specific examples thereof can be exemplified. -hydroxyethyl (meth) acrylate, 2 hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 1,3-butylene glycol (meth) acrylate, 1 , 4-butanediol (meth) acrylate, 1,6-hexanediol (meth) acrylate, 3-methyl pentane diol (meth) acrylate, etc., which may be used alone or will be 2 The above combination is used. Among them, 2-hydroxyethyl acrylate and 2-hydroxyethyl methacrylate are preferred from the viewpoint of reactivity. The amount of the (meth) acrylate having a hydroxyl group is preferably from 3 to 18 parts by mass, more preferably from 4 to 15 parts by mass, based on 100 parts by mass of the polyolefin polyol, and from 5 to 13 parts by mass. Better. When the amount of the (meth) acrylate having a hydroxyl group is less than 3 parts by mass, there is a possibility that the (meth)acryl group-containing olefin compound is present, and the strength of the adhesive sheet becomes low, and has a hydroxyl group ( When the amount of the (meth) acrylate used is more than 18 parts by mass, the amount of the (meth)acrylic group introduced into the olefin tends to be too large, and the adhesive sheet tends to be hard. -12-201213482 (A) The number of (meth)acrylic groups introduced into the (meth)acrylic group-containing polyolefin compound of the present invention is one or more (meth)acrylic groups in one molecule. Preferably, it is preferably 1 to 2 in 1 molecule. (A) The molecular weight of the (meth)acryl-based polyolefin compound is preferably from 10,000 to 300,000 by weight average molecular weight, preferably from 20,000 to 200,000, more preferably from 30,000 to 100,000. If the weight average molecular weight is less than 10,000, the cohesive force of the obtained adhesive sheet becomes low, and the strength of the adhesive sheet is insufficient, which is not preferable. In addition, when the molecular weight is more than 300,000, the viscosity of the composition for a photo-curable transparent adhesive sheet becomes too high, and it becomes difficult to handle, and the workability is remarkably deteriorated, which is not preferable. Further, the weight average molecular weight of the present invention is measured at room temperature using a gel permeation chromatography (Shodex GPC-101, manufactured by Showa Denko Co., Ltd.) under the following conditions, and is obtained using a standard polystyrene standard curve. value.

管柱：昭和電工製LF-804 管柱溫度：40°CPipe column: LF-804 column temperature of Showa Denko: 40 °C

試料：共聚物之〇·2質量％四氫呋喃溶液 流量：1 m 1 /分 溶離液：四氫呋喃 檢測器：RI (A)含有（甲基）丙烯酸基之聚烯烴化合物之光硬 化性透明黏著薄片用組成物中之含有量，在組成物中以 10〜50質量％爲佳，15〜45質量％爲較佳，20〜40質量％爲更 佳。若少於1〇質量％時，因所得之黏著薄片變脆而不佳。 若多於50質量％時，因有所得之著薄片之黏著力變低之可 -13- 201213482 能性而不佳。 ((B)具有羥基之（甲基）丙烯酸酯） 在此所稱之具有羥基之（甲基）丙烯酸酯係指以不具 有羧基者爲佳，例如可舉出烷基之碳數爲2~7之羥基烷基 (甲基）丙烯酸酯等，此等之具體例可例示2-羥基乙基（ 甲基）丙烯酸酯、2-羥基丙基（甲基）丙烯酸酯、4-羥基 丁基（甲基）丙烯酸酯、1,3-丁二醇（甲基）丙烯酸酯、 1，4-丁二醇（甲基）丙烯酸酯、l，6-己二醇（甲基）丙烯 酸酯、3-甲基戊二醇（甲基）丙烯酸酯等，此等可單獨使 用或將2種以上組合使用。其中，由所得之黏著薄片之黏 著力之觀點，以2_羥基乙基丙烯酸酯爲佳。（B)具有羥 基之（甲基）丙烯酸酯之含有量，在光硬化性透明黏著薄 片用組成物中以含有1~30質量％爲佳，較佳爲5〜25質量％ ’更佳爲10〜20質量％。若未滿1質量％，所得之黏著薄片 之對基材之密著性變得不充分而不佳。又，若多於30質量 %時，黏著薄片之耐水性變差而不佳。 ((C)具有羥基之（甲基）丙烯酸酯以外之光聚合性單 體） (C)具有羥基之（甲基）丙烯酸酯以外之光聚合性 單體（以下，亦有稱爲「（C)之光聚合性單體」）爲光 聚合性單體，係指具有羥基之（甲基）丙烯酸酯以外者， 以不含有羧基（化學式：-COOH )之單體爲佳。該單體並 -14- 201213482 無特別限定，可單獨使用或將2種類以上之具有乙烯基、 (甲基）丙烯酸基等之單官能性或多官能性光聚合性單體 組合使用。本發明之（C )之光聚合性單體，例如以具有 (甲基）丙烯酸基之（甲基）丙烯酸酯化合物爲佳，例如 可舉出甲基（甲基）丙烯酸酯、乙基（甲基）丙烯酸酯、 η-丙基（甲基）丙烯酸酯、η-丁基（甲基）丙烯酸酯、 tert-丁基（甲基） 2-乙基己基（甲基 、η-己基（甲基） 、月桂基（甲基） 之烷基（甲基）丙 莰基（甲基）丙烯 烷基（甲基）丙烯 二環戊烯基氧基乙 )丙烯酸酯、二環 癸烷二羥甲基二（ 丙烯酸酯等。尙可 氧基乙基（甲基） 酯、2-甲氧基乙氧 氧基乙基（甲基） 酸酯、甲氧基二乙 醇（甲基）丙烯酸 等之烷氧基（聚） (甲基）丙烯酸酯 丙烯酸酯、異丁基（ )丙烯酸酯、異癸基 丙烯酸酯、硬脂酸基 丙烯酸酯、三癸基（ 烯酸酯、環己基（甲 酸酯、異莰基（甲基 酸酯、二環戊烯基（ 基（甲基）丙烯酸酯 戊基氧基乙基（甲基 甲基）丙烯酸酯等之 舉出乙氧基乙基（甲 丙烯酸酯、丁氧基乙 基乙基（甲基）丙烯 丙烯酸酯等之烷氧基 二醇（甲基）丙烯酸 酯、甲氧基二丙二醇 伸烷二醇（甲基）丙 等之氟化烷基（甲基 甲基）丙烯酸酯、 (甲基）丙烯酸酯 (甲基）丙烯酸酯 甲基）丙烯酸酯等 基）丙烯酸酯、降 )丙烯酸酯、降莰 甲基）丙烯酸酯、 、二環戊基（甲基 )丙烯酸酯、三環 環狀烷基（甲基） 基）丙烯酸酯、甲 基（甲基）丙烯酸 酸酯、2-乙氧基乙 烷基（甲基）丙烯 酯、乙氧基二乙二 (甲基）丙烯酸酯 烯酸酯、八氟戊基 )丙烯酸酯、Ν，Ν- -15- 201213482 基 乙 基 胺 基 乙 二 - Ν Ν ' 酯 酸 烯 丙 xly 基 甲 /IV 基 乙 基 胺 基 甲 (甲基）丙烯酸酯等之二烷基胺基烷基（甲基）丙烯酸酯 、聚乙二醇二（甲基）丙烯酸酯、二乙二醇二（甲基）丙 烯酸酯、新戊二醇二（甲基）丙烯酸酯、三乙二醇二（甲 基）丙烯酸酯、三丙二醇二（甲基）丙烯酸酯、羥基三甲 基乙酸酯新戊二醇二（甲基）丙烯酸酯、1，3-雙（羥基乙 基）-5,5-二甲基乙內醯脲二（甲基）丙烯酸酯、α，ω-二（ 甲基）丙烯酸基雙二乙二醇酞酸酯、三羥甲基丙烷三（甲 基）丙烯酸酯、三羥甲基丙烷三（甲基）丙烯酸酯、乙二 醇二（甲基）丙烯酸酯、四乙二醇二（甲基）丙烯酸酯、 聚乙二醇二（甲基）丙烯酸酯、1，4-丁二醇二（甲基）丙 烯酸酯、1,6-己二醇二（甲基）丙烯酸酯、二丙烯醯氧基 乙基磷酸酯、二季戊四醇三羥基（甲基）丙烯酸酯、三羥 甲基丙烷三（甲基）丙烯酸酯、季戊四醇四（甲基）丙烯 酸酯等之多官能性（甲基）丙烯酸酯、丙烯醯胺及二甲基 丙烯醯胺、二乙基丙烯醯胺、（甲基）丙烯醯基嗎啉等之 丙烯醯胺衍生物、環氧丙基（甲基）丙烯酸酯等之含有環 氧基（甲基）丙烯酸酯等。本發明之（C)之光聚合性單 體由與含有（甲基）丙烯酸基之聚烯烴化合物之混和性、 黏著薄片之黏著性、強度、耐光性、耐熱性之觀點，以單 官能烷基（甲基）丙烯酸酯或環狀烷基（甲基）丙烯酸酯 爲佳。在此所稱之單官能或多官能之官能基係指（甲基） 丙烯酸基。（C)之光聚合性單體之含有量在光硬化性透 明黏著薄片用組成物中係以含有2 0〜8 8質量％爲佳，較佳爲 -16- 201213482 2 0〜7 0質量％。更佳爲4 0 ~ 6 9質量％。若未滿2 0質量％時，則 所得之黏著薄片對基材之密著性變得不充分而不佳。又’ 多於88質量％時’由於黏著薄片之凝集力變低而導致黏著 力降低，故不佳。 本發明中，（C)之光聚合性單體中所含之丙烯酸或 甲基丙烯酸等之含羧基之單體’係相對於（c)之光聚合 性單體之全量爲0.1質量％以下’以0.05質量％以下爲更佳 。（c)之光聚合性單體係以不含有含羧基之單體爲更佳 。含羧基之單體相對於（c)之光聚合性單體之全量在超 過〇. 1質量％時，變得難以抑制透明導電膜之導電層面之腐 貪虫。 由本發明之（B)具有羥基之（甲基）丙烯酸酯及（C )之光聚合性單體所構成之聚合物之理論玻璃轉移溫度， 由黏著薄片之強度、接著力之觀點，以0~50°C爲佳， 5~45°C爲較佳，10~40°C爲更佳。比0°C還低時，由於所得 之黏著薄片因含有（甲基）丙烯酸基之聚烯烴化合物之影 響而變得過於柔軟，致使黏著薄片之接著力變低而不佳。 又’比50°C還高時，由於所得之黏著薄片變得過硬而無法 得到充分之黏著性’故不佳。在此，理論玻璃轉移溫度（ Tg)係基於構成單體原料之各單體之單獨聚合體（均聚物 )之Tg及該單體之質量分率（共聚合比例），可藉由下述 之FOX方程式（1 )而算出。 [數式1] l/Tg=W1/T1+W2/T2+. . .Wn/Tn (1) -17- 201213482 式（1)中之w「wz· · *wn爲各單體之質量分率（ =(各單體之配合量/單體全質量）），Τι、Τ2. · ·Τη 爲各單體之均聚物之玻璃轉移溫度（絕對溫度）。均聚物 之Tg係設成採用公知資料之股份有限公司日刊工業新聞社 之「黏著技術手冊」或Wiiey-Interscience之「聚合物手冊 (Polymer Handbook)」中記載之値者。關於上述公知資 料中未記載之單體之均聚物之Tg，係設成採用藉由以下之 方法所求得之値者。即，使將對象之單體溶液聚合而得之 均聚物溶液流延於剝離襯墊上並乾燥而製成試驗樣品。對 於此試驗樣品使用示差掃描熱量計（DSC )，以10°C /分 之昇溫速度，由-8(TC至2 80°C爲止使其溫度變化而進行示 差掃描熱量測量，將因玻璃轉移所產生之吸熱開始溫度採 用作爲當該均聚物之Tg。 ((D)光聚合起始劑） 本發明中之（D)光聚合起始劑，例如可舉出羰基系 光聚合起始劑、硫化物系光聚合起始劑、醌系光聚合起始 劑、偶氮系光聚合起始劑、硫氯化物系光聚合起始劑、噻 吨酮系光聚合起始劑、過氧化物系光聚合起始劑等。 羰基系光聚合起始劑，例如可舉出二苯甲酮、苄基、 安息香、ω-溴苯乙酮、氯丙酮、苯乙酮、2，2-二乙氧基苯 乙酮、2，2-二甲氧基-2-苯基苯乙酮、ρ-二甲基胺基苯乙酮 、ρ-二甲基胺基苯丙酮、2·氯二苯甲酮、ρ，ρ’-二氯二苯甲 酮、Ρ，Ρ’_雙二乙基胺基二苯甲酮、米奇勒酮、安息香甲基 -18- 201213482 醚、安息香異丁基醚' 安息香-n_丁基醚、苄基甲基縮酮、 1-羥基環己基苯基酮、2 -羥基-2-甲基-1-苯基-丙烷-1-酮、 1- (4-異丙基苯基）_2-羥基·2_甲基丙烷-1-酮、甲基苄醯 基甲酸鹽、2，2-二乙氧基苯乙酮、4 _Ν，Ν、二甲基苯乙酮、 2·甲基-1-〔4-(甲基硫代）苯基〕-2_嗎啉基丙烷-丨_酮等 〇 硫化物系光聚合起始劑，例如可舉出二硫化二苯基、 二硫化二苄基、二硫化四乙基秋蘭姆、單硫化四甲基銨等 。醌系光聚合起始劑，例如可舉出苯醌、蒽醌等。偶氮系 光聚合起始劑’例如可舉出偶氮二異丁腈、2，2，-偶氮雙丙 垸、肼等。噻吨酮系光聚合起始劑，例如可舉出噻吨酮、 2- 氯噻吨酮、2-甲基噻吨酮等。過氧化物系光聚合起始劑 ’例如可舉出過氧化苄醯基、過氧化二-t-丁基等。此等光 聚合起始劑之中’由所得之光硬化性透明黏著薄片用組成 物中之溶解性之觀點，以2 -甲基-1-〔4-(甲基硫代）苯基 〕-2 -嗎啉基丙烷-1-酮爲佳。此等光聚合起始劑可單獨使 用或將2種類以上組合使用。 (D )光聚合起始劑之含有量，由光硬化性及所得之 黏著薄片之強度、黏著性之平衡之觀點，在光硬化性透明 黏著薄片用組成物中以0.2〜5質量％爲佳，0.5〜3質量％爲較 佳’ 0.8〜2質量％爲更佳》( D )光聚合起始劑之含有量若 未滿0.2質量％時，由光硬化爲不充分之傾向，若超過5質 量％時，有所得之黏著薄片之黏著性降低之傾向，故不佳 -19- 201213482 本發明之光硬化性透明黏著薄片用組成物，較佳爲相 對於光硬化性透明黏著薄片用組成物之全量，以含有（A )成分10〜50質量％、（B)成分卜30質量％、（C)成分 20〜88質量％、及（D)成分0.2〜5質量％而成。且，更佳爲 相對於光硬化性透明黏著薄片用組成物之全量，以含有（ A)成分15〜45質量％、（B)成分5〜25質量％、（C)成分 20〜70質量％、及（D )成分〇.2~5質量％而成。且，更佳爲 相對於光硬化性透明黏著薄片用組成物之全量，以含有（ A)成分20〜40質量％、（B)成分10〜20質量％、 （C)成 分40〜69質量％、及（D)成分0.5〜3質量％而成。 本發明之光硬化性透明黏著薄片用組成物因應必要， 爲了使所得之黏著薄片之接著力提升，在不使透明性降低 之範圍內’亦可添加黏著性賦予樹脂。黏著性賦予樹脂之 例，可舉出松香或松香之酯化物等之松香系樹脂；二萜烯 聚合體或α-蒎烯-酚共聚物等之萜烯系樹脂；脂肪族系（ C5系）或芳香族系（C9系）等之石油樹脂；其他、苯乙烯 系樹脂 '酚系樹脂、茬樹脂等。由耐光性之觀點，以將不 飽和雙鍵爲少之水添松香或不均化松香之酯化物，或脂肪 族或芳香族系石油樹脂、高Tg丙烯酸樹脂等添加至黏著薄 片中爲佳》黏著性賦予樹脂之添加量係相對於光硬化性透 明黏著薄片用組成物1 00質量份（相對於（A )成分、（B )成分、（C)成分及（D)成分之合計量100質量份）， 以添加1〜10質量份爲佳。 又’本發明之光硬化性透明黏著薄片用組成物因應必 -20- 201213482 要’在不損及透明性之範圍內，亦可含有公知之各種添加 劑。添加劑可舉出如可塑劑、表面潤滑劑'均平劑、軟化 劑、防氧化劑、防老化劑、光安定劑、紫外線吸收劑、聚 合禁止劑、苯并三哇系等之光安定劑、磷酸酯系及其他之 難燃劑、界面活性劑般之防帶電劑等。 又，本發明之光硬化性透明黏著薄片用組成物以調整 塗佈時之黏度爲目的，亦可使用有機溶劑作成溶液。所使 用之有機溶劑，例如可舉出甲基乙基酮、丙酮、乙酸乙酯 、四氫呋喃、二嚼院、環己酮、η -己院 '甲苯、若、n -丙 醇、異丙醇等。此等有機溶劑可單獨使用，亦可將2種以 上混合使用。 本發明之光硬化性透明黏著薄片用組成物之酸價較佳 爲0〜0·5 mgKOH/g，更佳爲0〜〇·1 mgK〇H/g，較更佳爲 0〜0.05 mgKOH/g。酸價若高於〇_5 mgKOH/g時，變得難 以抑制透明導電膜之導電層面之腐蝕。尙且，組成物之酸 價係依據JI S K 0 0 7 0所測量之値。例如，如以下般進行測 量。 以精密天秤精密坪取試料約2g程度並放入i〇〇mi三角 燒瓶中’對此添加乙醇/二乙基酸=1/1 (重量比）之混 合溶劑1 0ml使其溶解。並且，對此容器添加作爲指示藥之 酚酞乙醇溶液1〜3滴，充分攪拌使試料成爲均勻爲止。將 此以0.1N氫氧化鉀-乙醇溶液進行滴定，在指示藥持續呈 現淡紅色3 0秒鐘時’設爲中和之終點。將對此結果使用下 述之計算式（2 )所算得之値設爲組成物之酸價。 -21 - 201213482 [數式2] 酸價（mgKOH/g) = [Bxfx5.61 1]/S (2) B : 0.1 N氫氧化鉀-乙醇溶液之使用量（ml ) f: 0.1N氫氧化鉀-乙醇溶液之因數 S:試料之採取量（g) (透明導電膜固定用透明黏著薄片用組成物） 本發明之透明導電膜固定用黏著薄片用組成物係爲由 上述之光硬化性透明黏著薄片用組成物所構成之透明導電 膜固定用黏著薄片用組成物。 本發明之透明導電膜固定用黏著薄片用組成物所使用 之透明導電膜，只要係在至少單面之表層上具有導電層者 即可，可舉出在透明基材之表層上藉由蒸鍍或塗覆而設置 成導電物質的透明導電膜。透明導電膜之導電層上，被蒸 鍍或塗覆之導電物質並無特別限定，具體地可舉出氧化銦 錫、氧化銦、氧化錫、氧化鋅、氧化鎘、氧化鎵、氧化鈦 等。其中，可適宜使用透明性、導電性皆優之氧化銦錫。 透明導電膜中，作爲導電物質被蒸鍍或塗覆之基材，並非 係受到特別限定者，可舉出玻璃、樹脂薄膜等。 (透明導電膜固定用透明黏著薄片） 本發明之透明導電膜固定用透明黏著薄片係爲使上述 之透明導電膜固定用透明黏著薄片用組成物硬化而成之透 明導電膜固定用透明黏著薄片，可與透明導電膜之導電層 -22- 201213482 面適宜接著，且難以造成導電層之腐飩者。故，使透明導 電膜固定用透明黏著薄片與透明導電膜之導電層面接著而 成之層合體可適宜地使用作爲觸控面板。又，本發明之透 明導電膜固定用透明黏著薄片，可爲具有基材者，亦可爲 不具有基材之僅由黏著劑層所構成之兩面黏著薄片。又， 黏著劑層可爲僅由單一層所構成者，亦可爲複數層經層合 者。其中，由確保透明性或形狀追隨性之觀點，亦以不具 有基材，僅由黏著劑層所構成之兩面黏著薄片爲佳。 本發明之透明導電膜固定用透明黏著薄片係可藉由對 離型PET薄膜塗佈透明導電膜固定用透明黏著薄片用組成 物，對經塗布之組成物使用紫外線照射裝置等照射紫外線 使其光硬化而得。透明導電膜固定用黏著薄片之膜厚係以 作成5〜5 00μιη爲佳，以作成10〜300μιη爲更佳。透明導電膜 固定用黏著薄片之膜厚若變得比5μηι還薄時，黏著薄片之 貼合變得困難，若變得比500μιη還厚時，有膜厚之控制變 得困難之傾向。 本發明之透明導電膜固定用黏著薄片在甲苯中室溫下 浸漬24小時之以下述之式（3 )所求得之凝膠分率，係以 80〜100%爲佳，以90〜100%爲更佳。黏著薄片之凝膠分率 若低於80%時，於沖裁加工時有變得容易發生來自加工端 面之細絲等之傾向。 [數式3] 凝膠分率（％) =[(黏著薄片在甲苯浸漬後之甲苯乾燥後 之質量）/(黏著薄片在甲苯浸漬前之質量）]χ100 (3) -23- 201213482 [實施例] 以下藉由實施例、及比較例更具體地說明本發明，但 本發明並非係因此等之例而受到任何限定者。 <含有（甲基）丙烯酸基之聚烯烴化合物（A-1) > 對具備有溫度計、攪拌器、滴加漏斗、附乾燥管之冷 卻管的四頸燒瓶放置異佛爾酮二異氰酸酯101.2g及羥基末 端加氫聚丁二烯（日本曹達股份有限公司製、製品名： GI-3000、重量平均分子量14,000) 844.3g，在60°C下使其 反應，在殘留之異氰酸酯基成爲1 %以下之時點，放入2-羥 基乙基丙烯酸酯53.9g並升溫至70°C使其反應2小時，藉由 IR測量確定異氰酸酯基消失後，結束反應，而得到含有（ 甲基）丙烯酸基之聚烯烴化合物（A_l)(重量平均分子 量 50,000 )。 <含有（甲基）丙烯酸基之聚烯烴化合物（A-2)〉 對具備有溫度計、攪拌器、滴加漏斗、附乾燥管之冷 卻管的四頸燒瓶放置異佛爾酮二異氰酸酯152.9g及羥基末 端加氫聚異戊二烯（出光興產股份有限公司製、製品名： Epole、重量平均分子量1 2,000 ) 764_5g，在60°C下使其反 應。在殘留之異氰酸酯基成爲1%以下之時點，放入2-羥基 乙基丙烯酸酯81.7g並升溫至70°C使其反應2小時，藉由IR 測量確定異氰酸酯基消失後，結束反應，而得到含有（甲 -24- 201213482 基）丙烯酸基之聚烯烴化合物（A-2)(重量平均分子量 55,000)。 <含有（甲基）丙烯酸基之聚烯烴化合物（A-3) > 對具備有溫度計、攪拌器、滴加漏斗、附乾燥管之冷 卻管的四頸燒瓶放置異佛爾酮二異氰酸酯246.1 g及羥基末 端加氫聚丁二烯（日本曹達股份有限公司製、製品名： GI- 1 000、重量平均分子量3,000 ) 6 1 8.5g，在60°C下使其 反應，在殘留之異氰酸酯基成爲1%以下之時點，放入2-羥 基乙基丙烯酸酯135.0g並升溫至70°C使其反應2小時，藉由 IR測量確定異氰酸酯基消失後，結束反應，而得到含有（ 甲基）丙烯酸基之聚烯烴化合物（A-3)(重量平均分子 量 5，0 0 0 )。 <含有（甲基）丙烯酸基之聚烯烴化合物（A-4) > 對具備有溫度計、攪拌器、滴加漏斗、附乾燥管之冷 卻管的四頸燒瓶放置異佛爾酮二異氰酸醋61.2g及翔基末 端加氫聚丁二烯（日本曹達股份有限公司製、製品名： GI- 3 000、重量平均分子量1 4,000 ) 9 1 7.1 g，在60°C下使其 反應，在殘留之異氰酸酯基成爲1%以下之時點，放入2-羥 基乙基丙烯酸酯21.3g並升溫至70 °C進行反應，在因高分子 量化在反應途中則既已凝膠化。 (實施例1〜6、比較例1〜4) -25- 201213482 以表1所示之組成分別進行配合，藉由在室溫下使用 分散機進行混合而調製成均句之光硬化性透明黏著薄片用 組成物。使用塗佈器將已調製之光硬化性透明黏著薄片用 組成物，以能使其成爲膜厚200μιη般地塗佈於離型PET薄 膜（1 OOmmx 1 OOmmx 1 ΟΟμιη )，並在上面以25 μηι厚之離型 PET薄膜覆蓋後，使用紫外線照射裝置（日本電池股份有 限公司製、UV照却裝置4kwxl、輸出：160W/cm、金屬 鹵素燈），在照射距離12cm、燈移動速度20m/min、照 射量約500 mJ/ cm2之條件下照射紫外線使其硬化，而得 到被離型PET薄膜夾持之膜厚爲約200μηι之黏著薄片。尙 且，含有（甲基）丙烯酸基之聚烯烴化合物（Α-4)由於 既已凝膠化，而無法調製成含有重量平均分子量超過3 0萬 之含有（甲基）丙烯酸基之聚烯烴化合物的光硬化性透明 黏著薄片用組成物之比較例。Sample: Copolymer 〇·2% by mass Tetrahydrofuran solution Flow rate: 1 m 1 /min Dissolve: Tetrahydrofuran detector: RI (A) Composition of photocurable transparent adhesive sheet containing (meth)acrylic-based polyolefin compound The content of the substance is preferably 10 to 50% by mass in the composition, more preferably 15 to 45% by mass, still more preferably 20 to 40% by mass. If it is less than 1% by mass, the resulting adhesive sheet becomes brittle and is not preferable. If it is more than 50% by mass, the adhesion of the obtained sheet becomes low. -13-201213482 Poor performance. ((B) (meth) acrylate having a hydroxyl group) The (meth) acrylate having a hydroxyl group as used herein means preferably having no carboxyl group, and for example, the carbon number of the alkyl group is 2~ 7 hydroxyalkyl (meth) acrylate or the like, and specific examples thereof may be exemplified by 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxy butyl ( Methyl) acrylate, 1,3-butanediol (meth) acrylate, 1,4-butanediol (meth) acrylate, 1,6-hexanediol (meth) acrylate, 3- Methyl pentanediol (meth) acrylate or the like may be used alone or in combination of two or more. Among them, 2-hydroxyethyl acrylate is preferred from the viewpoint of the adhesion of the obtained adhesive sheet. (B) The content of the (meth) acrylate having a hydroxyl group is preferably from 1 to 30% by mass, preferably from 5 to 25% by mass, more preferably 10, in the composition for photocurable transparent adhesive sheet. ~20% by mass. If it is less than 1% by mass, the adhesion of the obtained adhesive sheet to the substrate may be insufficient. Further, when it is more than 30% by mass, the water resistance of the adhesive sheet is deteriorated. (C) Photopolymerizable monomer other than (meth) acrylate having a hydroxyl group) (C) Photopolymerizable monomer other than a (meth) acrylate having a hydroxyl group (hereinafter, also referred to as "(C) The photopolymerizable monomer ") is a photopolymerizable monomer, and is preferably a monomer other than a (meth) acrylate having a hydroxyl group, and a monomer having no carboxyl group (chemical formula: -COOH). The monomer is not particularly limited, and may be used singly or in combination of two or more kinds of monofunctional or polyfunctional photopolymerizable monomers having a vinyl group or a (meth)acryl group. The photopolymerizable monomer of (C) of the present invention is preferably a (meth) acrylate compound having a (meth) acrylate group, and examples thereof include methyl (meth) acrylate and ethyl (A). Acrylate, η-propyl (meth) acrylate, η-butyl (meth) acrylate, tert-butyl (methyl) 2-ethylhexyl (methyl, η-hexyl (methyl) , lauryl (methyl) alkyl (meth) propyl fluorenyl (meth) propylene alkyl (meth) propylene dicyclopentenyloxy ethyl acrylate, dicyclodecane dimethylol Alkyl oxides such as acrylates, etc., methoxyethyl (meth) acrylate, 2-methoxy ethoxyoxyethyl (meth) acrylate, methoxy diethanol (meth) acrylate (poly) (meth) acrylate acrylate, isobutyl ( acrylate), isodecyl acrylate, stearic acid acrylate, triterpene (enoic acid ester, cyclohexyl (formate, different) Mercapto group (methyl ester, dicyclopentenyl (meth) acrylate pentyloxyethyl (methyl methyl) acrylate, etc. An alkoxy diol (meth) acrylate such as ethoxyethyl (methacrylate), butoxyethyl ethyl (meth) propylene acrylate, or methoxydipropylene glycol alkylene glycol ( Fluorinated alkyl (methyl) acrylate, (meth) acrylate (meth) acrylate methyl) acrylate, etc., such as methacrylate, etc., acrylate, acrylate, and armor Acrylate, dicyclopentyl (meth) acrylate, tricyclic cyclic alkyl (meth) acrylate, methyl (meth) acrylate, 2-ethoxy ethane (Meth) acrylate, ethoxydiethylenedi(meth)acrylate enoate, octafluoropentyl acrylate, hydrazine, hydrazine - -15- 201213482 ethyl ethylamino ethanedi- Ν Ν ' Dialkylaminoalkyl (meth) acrylate, polyethylene glycol di(meth) acrylate, etc., such as allylic allylic acid xyl methyl/IV ethylaminomethyl (meth) acrylate Ethylene glycol di(meth)acrylate, neopentyl glycol di(meth)acrylate, triethylene glycol di(a) Acrylate, tripropylene glycol di(meth)acrylate, hydroxytrimethyl acetate neopentyl glycol di(meth)acrylate, 1,3-bis(hydroxyethyl)-5,5-di Methyl ethyl carbazide di(meth) acrylate, α, ω-di(methyl) acrylate diethylene glycol phthalate, trimethylolpropane tri(meth) acrylate, trishydroxyl Propane tri(meth)acrylate, ethylene glycol di(meth)acrylate, tetraethylene glycol di(meth)acrylate, polyethylene glycol di(meth)acrylate, 1,4-butyl Diol (meth) acrylate, 1,6-hexanediol di(meth) acrylate, dipropylene methoxyethyl phosphate, dipentaerythritol trihydroxy (meth) acrylate, trimethylol Polyfunctional (meth) acrylate such as propane tri(meth) acrylate or pentaerythritol tetra(meth) acrylate, acrylamide and dimethyl methacrylate, diethyl acrylamide, (methyl a propylene oxime derivative such as acryloyl morpholine or a epoxidized propyl (meth) acrylate or the like containing an epoxy group (A) ) Acrylate and the like. The photopolymerizable monomer of the invention (C) is a monofunctional alkyl group from the viewpoints of compatibility with a (meth)acrylic group-containing polyolefin compound, adhesion of an adhesive sheet, strength, light resistance, and heat resistance. (Meth) acrylate or cyclic alkyl (meth) acrylate is preferred. The monofunctional or polyfunctional functional group referred to herein means a (meth)acrylic group. The content of the photopolymerizable monomer (C) is preferably from 20 to 88% by mass, preferably from 16 to 201213482 2 0 to 70% by mass in the photocurable transparent adhesive sheet composition. . More preferably, it is 4 0 to 69% by mass. If it is less than 20% by mass, the adhesion of the obtained adhesive sheet to the substrate may be insufficient. Further, when it is more than 88% by mass, the adhesive strength of the adhesive sheet is lowered to lower the adhesive strength, which is not preferable. In the present invention, the carboxyl group-containing monomer such as acrylic acid or methacrylic acid contained in the photopolymerizable monomer (C) is 0.1% by mass or less based on the total amount of the photopolymerizable monomer (c). It is more preferably 0.05% by mass or less. The photopolymerizable single system of (c) is more preferably a monomer which does not contain a carboxyl group. When the total amount of the carboxyl group-containing monomer relative to the photopolymerizable monomer of (c) exceeds 0.1% by mass, it becomes difficult to suppress the rot of the conductive layer of the transparent conductive film. The theoretical glass transition temperature of the polymer composed of (B) a hydroxyl group-containing (meth) acrylate and (C) photopolymerizable monomer of the present invention is 0 to 0 from the viewpoint of the strength of the adhesive sheet and the adhesion force. 50 ° C is preferred, 5 to 45 ° C is preferred, and 10 to 40 ° C is preferred. When it is lower than 0 °C, the resulting adhesive sheet becomes too soft due to the influence of the (meth)acryl-based polyolefin compound, so that the adhesive force of the adhesive sheet becomes low. Further, when it is higher than 50 ° C, the obtained adhesive sheet becomes too hard to obtain sufficient adhesion, which is not preferable. Here, the theoretical glass transition temperature (Tg) is based on the Tg of the individual polymer (homopolymer) of each monomer constituting the monomer raw material and the mass fraction (copolymerization ratio) of the monomer, which can be as follows Calculated by the FOX equation (1). [Expression 1] l/Tg=W1/T1+W2/T2+. . . Wn/Tn (1) -17- 201213482 w "wz· · *wn in the formula (1) is the mass fraction of each monomer ( = (combination amount of each monomer / total mass of monomer)), Τι, Τ2. · · Τη is the glass transition temperature (absolute temperature) of the homopolymer of each monomer. The Tg of the homopolymer is set to The "Adhesive Technology Manual" of the Nikko Kogyo Co., Ltd., or the "Polymer Handbook" by Wiiey-Interscience, is known as the company. The Tg of the homopolymer of the monomer not described in the above-mentioned known materials is determined by the following method. Namely, a homopolymer solution obtained by polymerizing a monomer solution of a subject was cast on a release liner and dried to prepare a test sample. For this test sample, a differential scanning calorimeter (DSC) was used, and the temperature was changed by -8 (TC to 280 °C), and the differential scanning calorimetry was performed at a temperature increase rate of -8 to 280 ° C. The endothermic start temperature is used as the Tg of the homopolymer. ((D) Photopolymerization initiator) The (D) photopolymerization initiator in the invention may, for example, be a carbonyl photopolymerization initiator. Sulfide photopolymerization initiator, oxime photopolymerization initiator, azo photopolymerization initiator, thiochloride photopolymerization initiator, thioxanthone photopolymerization initiator, peroxide system Photopolymerization initiator, etc. The carbonyl photopolymerization initiator may, for example, be benzophenone, benzyl, benzoin, ω-bromoacetophenone, chloroacetone, acetophenone or 2,2-diethoxy Acetophenone, 2,2-dimethoxy-2-phenylacetophenone, ρ-dimethylaminoacetophenone, ρ-dimethylaminopropiophenone, 2·chlorobenzophenone ,ρ,ρ'-Dichlorobenzophenone, anthracene, Ρ'_bisdiethylaminobenzophenone, Michlerone, benzoin methyl-18-201213482 ether, benzoin isobutyl ether Yixiang-n-butyl ether, benzyl methyl ketal, 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-propan-1-one, 1- (4- Isopropyl phenyl) 2 -hydroxy-2-methylpropan-1-one, methyl benzalkonate, 2,2-diethoxyacetophenone, 4 Ν, hydrazine, dimethylbenzene A sulfonium-based photopolymerization initiator such as ethyl ketone or 2, methyl-1-[4-(methylthio)phenyl]-2- morpholinopropane-indole-ketone, for example, disulfide Diphenyl, dibenzyl disulfide, tetraethylthiuram disulfide, tetramethylammonium monosulfide, etc. The quinone photopolymerization initiator may, for example, be benzoquinone, anthracene or the like. Examples of the polymerization initiators include azobisisobutyronitrile, 2,2,-azobispropane, hydrazine, etc. The thioxanthone photopolymerization initiator may, for example, be thioxanthone or 2- Examples of the chlorothioxanthone, 2-methylthioxanthone, etc. The peroxide photopolymerization initiator "is, for example, a benzamidine peroxide group or a di-t-butyl peroxide. Among the agents, from the viewpoint of solubility in the composition of the resulting photocurable transparent adhesive sheet, 2-methyl-1-[4-( The thio)phenyl]-2- morpholinylpropan-1-one is preferred. These photopolymerization initiators may be used singly or in combination of two or more kinds. (D) The content of the photopolymerization initiator From the viewpoint of the photocurability and the balance between the strength and the adhesiveness of the obtained adhesive sheet, the composition for the photocurable transparent adhesive sheet is preferably 0.2 to 5% by mass, and preferably 0.5 to 3% by mass. When the content of the photopolymerization initiator is less than 0.2% by mass, the photocuring is insufficient, and if it exceeds 5% by mass, the adhesion of the obtained adhesive sheet is obtained. The composition of the photocurable transparent adhesive sheet of the present invention is preferably a total amount of the composition for the photocurable transparent adhesive sheet, and contains the component (A) 10~ 50% by mass, (B) component is 30% by mass, (C) component is 20 to 88% by mass, and (D) component is 0.2 to 5% by mass. Further, it is more preferably 15 to 45 mass% of the component (A), 5 to 25 mass% of the component (B), and 20 to 70 mass% of the component (C), based on the total amount of the composition for the photocurable transparent adhesive sheet. And (D) components are 〇. 2~5 mass%. In addition, it is more preferably 20 to 40% by mass of the component (A), 10 to 20% by mass of the component (B), and 40 to 69% by mass of the component (C) with respect to the total amount of the composition for the photocurable transparent adhesive sheet. And (D) component is 0.5 to 3 mass%. In the composition for a photocurable transparent adhesive sheet of the present invention, in order to increase the adhesion of the obtained adhesive sheet, an adhesiveness-imparting resin may be added in a range in which the transparency is not lowered. Examples of the adhesiveness-imparting resin include a rosin-based resin such as rosin or rosin esterified compound; a terpene-based resin such as a diterpene polymer or an α-pinene-phenol copolymer; and an aliphatic system (C5 system). Or petroleum resin such as aromatic (C9); other, styrene resin 'phenolic resin, enamel resin, etc. From the viewpoint of light resistance, it is preferable to add an esterified product of rosin or uneven rosin, or an aliphatic or aromatic petroleum resin, a high Tg acrylic resin, or the like, which has a small amount of unsaturated double bonds, to an adhesive sheet. The amount of the tackifying resin to be added is 100 parts by mass of the composition for the photocurable transparent adhesive sheet (100 parts by mass relative to the components (A), (B), (C), and (D). It is preferred to add 1 to 10 parts by mass. Further, the composition for a photocurable transparent adhesive sheet of the present invention may contain various additives as known in the range of not impairing transparency. Examples of the additives include a plasticizer, a surface lubricant 'leveling agent, a softener, an antioxidant, an anti-aging agent, a light stabilizer, a UV absorber, a polymerization inhibitor, a light stabilizer such as a benzotrizane, and a phosphoric acid. Ester and other flame retardants, antistatic agents like surfactants. Further, the composition for a photocurable transparent adhesive sheet of the present invention may be used as a solution for adjusting the viscosity at the time of coating. Examples of the organic solvent to be used include methyl ethyl ketone, acetone, ethyl acetate, tetrahydrofuran, diche, cyclohexanone, η-hexa toluene, ruthenium, n-propanol, isopropanol, and the like. . These organic solvents may be used singly or in combination of two or more. The acid value of the composition for a photocurable transparent adhesive sheet of the present invention is preferably 0 to 0.5 mgKOH/g, more preferably 0 to mg1 mgK〇H/g, still more preferably 0 to 0.05 mgKOH/ g. When the acid value is higher than 〇_5 mgKOH/g, it becomes difficult to suppress corrosion of the conductive layer of the transparent conductive film. Further, the acid value of the composition is measured in accordance with JI S K 0 0 7 0. For example, the measurement is performed as follows. The sample was placed in an i〇〇mi triangle flask with a precision balance of about 2 g. The solution was dissolved in 10 ml of a mixed solvent of ethanol/diethyl acid = 1/1 (weight ratio). Further, 1 to 3 drops of a phenolphthalein ethanol solution as an indicator was added to the container, and the sample was sufficiently stirred to make the sample uniform. This was titrated with a 0.1 N potassium hydroxide-ethanol solution and set to the end of neutralization when the indicator continued to appear reddish for 30 seconds. The enthalpy calculated by the above calculation formula (2) for this result is taken as the acid value of the composition. -21 - 201213482 [Formula 2] Acid value (mgKOH/g) = [Bxfx5.61 1]/S (2) B : 0.1 N potassium hydroxide-ethanol solution (ml) f: 0.1 N hydroxide The factor of the potassium-ethanol solution S: the amount of the sample (g) (the composition for the transparent adhesive film for transparent conductive film fixing) The composition for the adhesive sheet for fixing a transparent conductive film of the present invention is made of the above-mentioned photocurable transparent A composition for an adhesive sheet for fixing a transparent conductive film which is composed of a composition for an adhesive sheet. The transparent conductive film used for the composition for an adhesive sheet for fixing a transparent conductive film of the present invention may be a conductive layer on at least one surface layer, and may be deposited on the surface layer of the transparent substrate by evaporation. Or a transparent conductive film coated with a conductive material. The conductive material to be vapor-deposited or coated on the conductive layer of the transparent conductive film is not particularly limited, and specific examples thereof include indium tin oxide, indium oxide, tin oxide, zinc oxide, cadmium oxide, gallium oxide, and titanium oxide. Among them, indium tin oxide having excellent transparency and conductivity can be suitably used. In the transparent conductive film, the substrate to be vapor-deposited or coated as a conductive material is not particularly limited, and examples thereof include glass and a resin film. (Transparent adhesive film for transparent conductive film fixing) The transparent adhesive film for fixing a transparent conductive film of the present invention is a transparent adhesive film for fixing a transparent conductive film which is obtained by curing the above-mentioned transparent conductive film fixing transparent adhesive sheet. It can be suitably followed by the conductive layer -22-201213482 of the transparent conductive film, and it is difficult to cause the rot of the conductive layer. Therefore, a laminate in which the transparent adhesive sheet for fixing the transparent conductive film and the conductive layer of the transparent conductive film are subsequently formed can be suitably used as the touch panel. Further, the transparent adhesive sheet for fixing a transparent conductive film of the present invention may be a substrate having a substrate or a double-sided adhesive sheet comprising only an adhesive layer without a substrate. Further, the adhesive layer may be composed of only a single layer, or may be a plurality of layers laminated. Among them, from the viewpoint of ensuring transparency or shape followability, it is preferable to use a double-sided adhesive sheet composed of only an adhesive layer without a substrate. The transparent adhesive film for transparent conductive film of the present invention can be coated with a composition for a transparent adhesive film for transparent conductive film by applying a composition for a transparent conductive film to a release PET film, and irradiating the coated composition with an ultraviolet ray irradiation device or the like to illuminate the light. Hardened. The thickness of the adhesive sheet for fixing the transparent conductive film is preferably 5 to 500 μm, more preferably 10 to 300 μm. When the thickness of the adhesive sheet for fixing the transparent conductive film is thinner than 5 μm, the adhesion of the adhesive sheet becomes difficult, and if it is thicker than 500 μm, the control of the film thickness tends to be difficult. The adhesive sheet for fixing a transparent conductive film of the present invention is immersed in toluene at room temperature for 24 hours at a gel fraction of the following formula (3), preferably 80 to 100%, and 90 to 100%. For better. When the gel fraction of the adhesive sheet is less than 80%, there is a tendency that the filaments from the machined end face tend to occur during the punching. [Formula 3] Gel fraction (%) = [(mass of the adhesive sheet after toluene drying after toluene impregnation) / (mass of the adhesive sheet before toluene impregnation)] χ 100 (3) -23- 201213482 [Implementation EXAMPLES Hereinafter, the present invention will be specifically described by way of examples and comparative examples, but the present invention is not limited by the examples and the like. <(Methacrylic acid group-containing polyolefin compound (A-1) > Isophorone diisocyanate 101.2 was placed in a four-necked flask equipped with a thermometer, a stirrer, a dropping funnel, and a cooling tube with a drying tube. g and hydroxyl terminated polybutadiene (manufactured by Nippon Soda Co., Ltd., product name: GI-3000, weight average molecular weight 14,000) 844.3g, reacted at 60 ° C, the residual isocyanate group became 1% At the following time, 53.9 g of 2-hydroxyethyl acrylate was placed, and the temperature was raised to 70 ° C to carry out a reaction for 2 hours. After the disappearance of the isocyanate group was confirmed by IR measurement, the reaction was terminated to obtain a (meth)acrylic group-containing group. Polyolefin compound (A-1) (weight average molecular weight 50,000). <Polyolefin compound (A-2) containing (meth)acrylic group> Isophorone diisocyanate 152.9 g was placed in a four-necked flask equipped with a thermometer, a stirrer, a dropping funnel, and a cooling tube with a drying tube And a hydroxyl-terminated hydrogenated polyisoprene (manufactured by Idemitsu Kosan Co., Ltd., product name: Epole, weight average molecular weight: 12,000) 764_5 g, and reacted at 60 °C. When the residual isocyanate group was 1% or less, 81.7 g of 2-hydroxyethyl acrylate was placed, and the temperature was raised to 70 ° C to carry out a reaction for 2 hours. After the disappearance of the isocyanate group was confirmed by IR measurement, the reaction was terminated. A polyolefin compound (A-2) (weight average molecular weight: 55,000) containing (A-24-201213482) acrylate group. <(Methacrylic acid group-containing polyolefin compound (A-3) > Isophorone diisocyanate 246.1 was placed in a four-necked flask equipped with a thermometer, a stirrer, a dropping funnel, and a cooling tube with a drying tube g and hydroxyl terminated hydrogenated polybutadiene (manufactured by Nippon Soda Co., Ltd., product name: GI-1 000, weight average molecular weight 3,000) 6 1 8.5 g, reacted at 60 ° C, in the residual isocyanate group When it is 1% or less, 135.0 g of 2-hydroxyethyl acrylate is placed, and the temperature is raised to 70 ° C to carry out a reaction for 2 hours. After the disappearance of the isocyanate group is confirmed by IR measurement, the reaction is terminated to obtain a (methyl) group. Acrylic based polyolefin compound (A-3) (weight average molecular weight 5,0 0 0). <(Methacrylic acid group-containing polyolefin compound (A-4) > Isophorone diisocyanate was placed in a four-necked flask equipped with a thermometer, a stirrer, a dropping funnel, and a cooling tube with a drying tube Acidic vinegar 61.2g and Xiangji terminal hydrogenated polybutadiene (made by Japan Soda Co., Ltd., product name: GI-3 000, weight average molecular weight 1 4,000) 9 1 7.1 g, reacted at 60 ° C, When the amount of the residual isocyanate group was 1% or less, 21.3 g of 2-hydroxyethyl acrylate was placed and the temperature was raised to 70 ° C to carry out a reaction, and it was gelled during the course of the reaction by the high molecular weight. (Examples 1 to 6 and Comparative Examples 1 to 4) -25-201213482 The compositions shown in Table 1 were each blended, and the photocurable transparent adhesive was prepared into a uniform sentence by mixing at room temperature using a disperser. A composition for a sheet. The composition of the photocurable transparent adhesive sheet prepared by using an applicator can be applied to a release PET film (100 mm×100 mm×1 ΟΟμιη) at a film thickness of 200 μm, and is 25 μm on the surface. After the thick release PET film was covered, an ultraviolet irradiation device (manufactured by Nippon Battery Co., Ltd., UV irradiation device 4kwxl, output: 160W/cm, metal halide lamp) was used, and the irradiation distance was 12 cm and the lamp moving speed was 20 m/min. The ultraviolet ray was irradiated under the conditions of an irradiation amount of about 500 mJ/cm 2 to obtain an adhesive sheet having a film thickness of about 200 μm sandwiched by the release PET film. Further, the (meth)acrylic group-containing polyolefin compound (Α-4) cannot be prepared into a polyolefin compound containing a (meth)acrylic group having a weight average molecular weight of more than 300,000 because it has been gelated. A comparative example of a composition for a photocurable transparent adhesive sheet.

算 計 之 度 溫 移 轉 璃 玻 論 32 理 /IV 對於實施例及比較例，由上述式（1)算出所使用之 由（B)具有羥基之（甲基）丙烯酸酯及（C)之光聚合性 單體所構成之聚合物之理論玻璃轉移溫度。其結果如表1 所示。 (酸價） 使用上述之方法’依據式（2)算出實施例及比較例 之光硬化性透明黏著薄片用組成物之酸價。其結果如表i -26- 201213482 所示。 (氧化銦錫膜之電阻値測量） 將上面所得之黏著薄片切出50mmx50mm之大小，並 剝離25μιη厚之離型PET薄膜後，貼合至lOOmmxlOOmm之氧 化銦錫蒸鍍PET薄膜之氧化銦錫膜面。對經貼合之黏著薄 片之兩端使用電阻値測量機（三菱化學股份有限公司製「 Loresta GP」），測量初期之電阻値（I )。將貼合有黏 著薄片之氧化銦錫蒸鍍PET薄膜在60°C、90%RH條件下放 置500小時，且在23°C、50%RH條件下放置1小時後，在與 初期相同之場所測量電阻値（R2 )。氧化銦錫膜之電阻値 上昇率係以下述之式（4)算出。 [數式4] 氧化銦錫膜之電阻値上升率(％)=((R2-Ri )/R! )x 100 (4) 電阻値上昇率之評價係以下述之基準進行。其結果如 表1所示。 〇；電阻値上昇率未滿5% △;電阻値上昇率5〜未滿10% X ;電阻値上昇率10%以上 (黏著薄片之黏著力測量） 將上面所得之黏著薄片切出25x1 〇〇mm之大小，將存 在於黏著薄片之兩面之離型PET薄膜中之ΙΟΟμπι厚之離型 PET薄膜剝離後，使黏著面（測量面）在試驗板上藉由以 -27- 201213482 2kg之橡膠滾筒（寬：約50mm)來回1次進行貼附，而製 成測量用樣品。試驗板係使用玻璃板。將所得之測量用樣 品在2 3 °C、濕度5 0 %之環境下放置2 4小時，並依據JI S Z023 7以剝離速度3 00mm /分進行180°方向之拉伸試驗， 且測量黏著薄片之對玻璃板之黏著力（N/25mm)。將所 得之測量値作爲黏著力。其結果如表1所示。 (全光線穿透率測量） 將上面所得之黏著薄片切出30mmx30mm之大小，將 存在於黏著薄片之兩面之離型PET薄膜中之25 μιη厚之離型 PET薄膜剝離，並將貼合於玻璃板上者作爲測量用樣品。 對測量用樣品使用股份有限公司村上色彩技術硏究所製「 HR-1 00型」，測量其全光線穿透率（％ )。其結果如表1 所示。 (凝膠分率） 將黏著薄片切出20mm x40mm之大小而製成測量用樣 品。使此測量用樣品在甲苯中23 t：下浸漬24小時後’將測 量用樣品從甲苯中取出。其後，使測量用樣品在1 30°C中 乾燥1小時。其次，測量乾燥後之測量用樣品之重量’藉 由上述之式（3)而算出凝膠分率。其結果如表1所示。 -28- 201213482 寸 m 鏟 ±3 ο § Οί — cq CO \〇 X g C0 eg n CC 谥 ±5 s ο ο 卜 a — d 〇 US to 一 s 5 U 丑 ο 3 ο ο s «-Ι d 0 S3 9 9) rH m 鎰 n ο S — ο ο — d 〇 S Ο U3 茬 tc 握 m w S S g d — ο S ο 呀 d < § 9 C4 s \Λ i 闺 w n S s ο s — d 〇 S U3 C0 s 寸 m m K g ο 茺 — ο K- — d 〇 0Ϊ o 卜’ s CO i m 舰 s S w Ο 0) 04 ο 卜 s5 — O 〇 n o d s i m m ο s — ο ο — d 〇 03 94 cj s — i m n ο 8 — ο ο K- — d 〇 5) IA s <<—s 1 < <»"S 1 < CO 1 < Ψ4 « 跋 11 « Μ • < ω Μ Λ « < X o 醤 < PQ to • < X ω ο • κβ < N 酱 寸 X pH Pi «—S ε bO Η 漏 剧 m ααϋ 3ΠΓ 鬆 <π m 絮 μ g fe «S3 <F X « \ X 0 幺 bfi B W 趙 » 瞰 丄1 jg 囪 iffflfl QW » m 璉 ιφ) 曰 in O) \ Z R 槲 ts g a- m m 1 SI 仞·Ν 爾ϋ m 3β uT ηττί X脚 •M味 堋饀 iii £Κ 觀 跡 <Π 嵌 m n <5 账 0,901=¾ 趣33£psiH ΡΙ 避蠢KS璐3-1=¾ liwpwasll 避_篇2籠 0621131^8&善語望#蠢 卜*9 * w* 吋*« *N*τ* 明阻 發電 本其 之’ 得比 所相 。 中例良 例較優 施比較 實與皆 在物力 ，成著 知組黏 得用 、 m片率 明薄透 可著穿 果黏線 結明光 2透全 1 性 、 表化率 由硬昇 光上 之値 -29- 201213482 [產業上之可利用性] 本發明之光硬化性透明黏著薄片用組成物具有高透明 性、防金屬腐蝕性，且由於黏著性優良而可有用作爲透明 導電膜固定用之黏著薄片，尤其係在靜電容量方式之觸控 面板所使用之透明導電膜之固定用途上特別有用。 -30-For the examples and comparative examples, the (B) photopolymerization of (B) hydroxyl group-containing (meth) acrylate and (C) was calculated from the above formula (1). Theoretical glass transition temperature of a polymer composed of a monomer. The results are shown in Table 1. (Acid value) The acid value of the composition for photocurable transparent adhesive sheets of the examples and the comparative examples was calculated according to the formula (2). The results are shown in Table i -26- 201213482. (Measurement of Resistance 値 of Indium Tin Oxide Film) The adhesive sheet obtained above was cut into a size of 50 mm×50 mm, and a 25 μm thick release PET film was peeled off, and then bonded to an indium tin oxide film of an indium tin oxide vapor-deposited PET film of 100 mm×100 mm. surface. A resistance 値 measuring machine ("Loresta GP" manufactured by Mitsubishi Chemical Corporation) was used for both ends of the bonded adhesive sheet, and the initial resistance 値 (I) was measured. The indium tin oxide vapor-deposited PET film to which the adhesive sheet was attached was allowed to stand under the conditions of 60 ° C and 90% RH for 500 hours, and left at 23 ° C and 50% RH for 1 hour, and then in the same place as the initial stage. Measure the resistance 値 (R2). The resistance 値 rise rate of the indium tin oxide film was calculated by the following formula (4). [Expression 4] Resistance 値 increase rate (%) of the indium tin oxide film = ((R2 - Ri ) / R! ) x 100 (4) The evaluation of the resistance 値 increase rate was performed on the basis of the following criteria. The results are shown in Table 1. 〇; resistance 値 rise rate less than 5% △; resistance 値 rise rate 5 ~ less than 10% X; resistance 値 rise rate of 10% or more (adhesion measurement of adhesive sheet) The adhesive sheet obtained above is cut out 25x1 〇〇 The size of mm is the peeling of the ΙΟΟμπι thick release PET film which exists in the release PET film on both sides of the adhesive sheet, and the adhesive surface (measurement surface) is made on the test board by the rubber roller of -27-201213482 2kg (Width: about 50 mm) Attached one time back and forth to prepare a sample for measurement. The test panels were made of glass plates. The obtained measurement sample was allowed to stand in an environment of 23 ° C and a humidity of 50% for 24 hours, and subjected to a tensile test in a 180° direction at a peeling speed of 300 mm/min according to JIS Z0237, and the adhesive sheet was measured. Adhesion to the glass plate (N/25mm). The measured enthalpy obtained is used as the adhesion. The results are shown in Table 1. (Measurement of total light transmittance) The adhesive sheet obtained above was cut out to a size of 30 mm x 30 mm, and the 25 μm thick release PET film present on the release PET film on both sides of the adhesive sheet was peeled off and bonded to the glass. The board is used as a sample for measurement. For the measurement sample, the "HR-1 00 type" manufactured by Murakami Color Technology Research Co., Ltd. was used to measure the total light transmittance (%). The results are shown in Table 1. (Gel fraction) The adhesive sheet was cut out to a size of 20 mm x 40 mm to prepare a sample for measurement. The sample for measurement was subjected to immersion in toluene at 23 t: for 24 hours, and the sample for measurement was taken out from the toluene. Thereafter, the sample for measurement was dried at 1 30 ° C for 1 hour. Next, the weight of the sample for measurement after drying was measured, and the gel fraction was calculated by the above formula (3). The results are shown in Table 1. -28- 201213482 inch m shovel ±3 ο § Οί — cq CO \〇X g C0 eg n CC 谥±5 s ο ο 卜 a — d 〇US to a s 5 U ug ο 3 ο ο s «-Ι d 0 S3 9 9) rH m 镒n ο S — ο ο — d 〇S Ο U3 茬tc grip mw SS gd — ο S ο 呀 d < § 9 C4 s \Λ i 闺wn S s ο s — d 〇 S U3 C0 s inch mm K g ο 茺 — ο K- — d 〇0Ϊ o 卜' s CO im ship s S w Ο 0) 04 ο 卜 s5 — O 〇 nodsimm ο s — ο ο — d 〇 03 94 cj s — imn ο 8 — ο ο K- — d 〇5) IA s <<-s 1 <<»"S 1 < CO 1 < 14 « 跋11 « Μ • < ω Μ Λ « < X o 醤< PQ to • < X ω ο • κβ < N Sauce X pH Pi «—S ε bO Η Missing m ααϋ 3ΠΓ Pine <π m 絮 μ g fe «S3 &lt ;FX « \ X 0 幺bfi BW Zhao » 丄 丄 1 jg chimney flufffl QW » m 琏ιφ) 曰 in O) \ ZR 槲ts g a- mm 1 SI 仞·Ν ϋ m 3β uT ηττί X foot•M Miso iii £Κ spectator <Π Mn <5 account 0,901=3⁄4 Interest 33£psiH ΡΙ Avoid stupid KS璐3-1=3⁄4 liwpwasll Avoid _ articles 2 cage 06113113^8& good language hope #蠢卜*9 * w* 吋*« *N*τ * The power of the power generation is the same as it is. In the case of the good example, the better and the better are all in the material force, the knowledge is sticky, the m film is thin and transparent, and the fruit sticking line is clear. The light is 2, and the table rate is from hard rising.値-29-201213482 [Industrial Applicability] The composition for photocurable transparent adhesive sheet of the present invention has high transparency and metal corrosion resistance, and is excellent in adhesion and can be used as a transparent conductive film. The adhesive sheet is particularly useful for the fixed use of a transparent conductive film used in a capacitive touch panel. -30-

Claims (1)

201213482 七、申請專利範圍： 1 · 一種光硬化性透明黏著薄片用組成物，其係含有（ A)重量平均分子量爲1萬〜3 0萬之含有（甲基）丙烯酸基 之聚烯烴化合物、（B)具有羥基之（甲基）丙烯酸酯、 (C)具有羥基之（甲基）丙烯酸酯以外之光聚合性單體 、及（D)光聚合起始劑而成之光硬化性透明黏著薄片用 組成物，其特徵爲：相對於（C)具有羥基之（甲基）丙 烯酸酯以外之光聚合性單體之全量而言，（C)具有羥基 之（甲基）丙烯酸酯以外之光聚合性單體中所包含之含羧 基之單體爲0.1質量％以下。 2. 如請求項1之光硬化性透明黏著薄片用組成物，其 係相對於光硬化性透明黏著薄片用組成物之全量，含有（ A)重量平均分子量爲1萬〜30萬之含有（甲基）丙烯酸基 之聚烯烴化合物10〜50質量％、（B)具有羥基之（甲基） 丙烯酸酯1~30質量％、 （C)具有羥基之（甲基）丙烯酸 酯以外之光聚合性單體2 0〜8 8質量％、及（D )光聚合起始 劑0.2〜5質量％而成。 3. 如請求項1或2之光硬化性透明黏著薄片用組成物。， 其中（C)具有羥基之（甲基）丙烯酸酯以外之光聚.合性 單體不含有含羧基之單體。 4. 如請求項1~3中任一項之光硬化性透明黏著薄片用 組成物’其中使（B)具有羥基之（甲基）丙烯酸酯及（C )具有羥基之（甲基）丙烯酸酯以外之光聚合性單體聚合 而得之聚合物之理論玻璃轉移溫度爲0°C〜50 °C。 -31 - 201213482 5.如If求項1〜4中任一項之光硬化性透明黏著薄片用 組成物’其中（C)具有羥基之（甲基）丙烯酸酯以外之 光聚合性單體爲單官能烷基（甲基）丙烯酸酯及/或環狀 烷基（甲基）丙烯酸酯。 6·如請求項1〜5中任一項之光硬化性透明黏著薄片用 組成物’其中（A)重量平均分子量爲丨萬〜“萬之含有（ 甲基）丙嫌酸基之聚烯烴化合物係使聚烯烴聚醇化合物、 具有經基之（甲基）丙烯酸酯、及於丨分子中具有2個以上 Mi酸基之化合物反應而得之具有（甲基）丙烯酸基之 化合物。 7. 如請求項1〜6中任一項之光硬化性透明黏著薄片用 組成物’其中酸價爲0.5 mgKOH/ g以下。 8. —種透明導電膜固定用透明黏著薄片用組成物，其 特徵爲使如請求項1〜7中任一項之光硬化性透明黏著薄片 用組成物硬化而得之光硬化性透明黏著薄片使用於透明導 電膜之貼合。 9. 一種透明導電膜固定用透明黏著薄片，其係使如請 求項8之透明導電膜固定用透明黏著薄片用組成物硬化而 得者。· 10. 如請求項9之透明導電膜固定用透明黏著薄片，其 中凝膠分率爲80〜100%。 11. 一種層合體，其特徵爲使如請求項9或10之透明導 電膜固定用透明黏著薄片接著於透明導電膜之導電層面。 -32- 201213482 四、指定代表圖： (一） 本案指定代表圖為：無 (二） 本代表圖之元件符號簡單說明：無 -3- 201213482 五 本案若有化學式時，請揭示最能顯示發明特徵的化學 式：無201213482 VII. Patent application scope: 1 . A composition for photocurable transparent adhesive sheet containing (A) a (meth)acrylic group-containing polyolefin compound having a weight average molecular weight of 10,000 to 300,000 ( B) Photocurable transparent adhesive sheet comprising a (meth) acrylate having a hydroxyl group, (C) a photopolymerizable monomer other than a (meth) acrylate having a hydroxyl group, and (D) a photopolymerization initiator The composition is characterized in that (C) photopolymerization other than (meth) acrylate having a hydroxyl group is relative to (C) the total amount of the photopolymerizable monomer other than the (meth) acrylate having a hydroxyl group The carboxyl group-containing monomer contained in the monomer is 0.1% by mass or less. 2. The composition for photocurable transparent adhesive sheet of claim 1 which contains (A) a weight average molecular weight of 10,000 to 300,000 with respect to the total amount of the composition for photocurable transparent adhesive sheet (A) 10% to 50% by mass of the acryl-based polyolefin compound, (B) 1 to 30% by mass of the (meth) acrylate having a hydroxyl group, and (C) a photopolymerizable single sheet other than the (meth) acrylate having a hydroxyl group The composition is 20 to 8 mass%, and (D) the photopolymerization initiator is 0.2 to 5 mass%. 3. The composition for photocurable transparent adhesive sheet of claim 1 or 2. Wherein (C) a photopolymerizable monomer other than a hydroxyl group (meth) acrylate does not contain a carboxyl group-containing monomer. 4. The composition for photocurable transparent adhesive sheet according to any one of claims 1 to 3, wherein (B) (B) has a hydroxyl group (meth) acrylate and (C) has a hydroxyl group (meth) acrylate The theoretical glass transition temperature of the polymer obtained by polymerizing other photopolymerizable monomers is from 0 ° C to 50 ° C. The composition for photocurable transparent adhesive sheet of any one of Claims 1 to 4, wherein (C) a photopolymerizable monomer other than a (meth) acrylate having a hydroxyl group is a single Functional alkyl (meth) acrylates and / or cyclic alkyl (meth) acrylates. 6. The composition for photocurable transparent adhesive sheet according to any one of claims 1 to 5, wherein (A) a polyolefin compound having a weight average molecular weight of 10,000 to 10,000 (methyl) acrylic acid group A compound having a (meth)acrylic group obtained by reacting a polyolefin polyol compound, a (meth) acrylate having a trans group, and a compound having two or more Mi acid groups in a ruthenium molecule. The composition for a photocurable transparent adhesive sheet according to any one of claims 1 to 6, wherein the acid value is 0.5 mgKOH/g or less. 8. A composition for a transparent adhesive film for fixing a transparent conductive film, which is characterized in that The photocurable transparent adhesive sheet obtained by curing the photocurable transparent adhesive sheet according to any one of claims 1 to 7 is used for bonding a transparent conductive film. 9. A transparent adhesive film for fixing a transparent conductive film The transparent adhesive film for transparent conductive film fixing of claim 8 is cured by the composition. The transparent adhesive film for transparent conductive film fixing according to claim 9 wherein the gel fraction is 80%. 100%. 11 A laminate characterized in that a transparent adhesive film for fixing a transparent conductive film according to claim 9 or 10 is attached to a conductive layer of a transparent conductive film. -32 - 201213482 IV. Designated representative map: (1) Representative representative map of the case For: None (2) The symbol of the symbol of this representative figure is simple: no-3-201213482 If there is a chemical formula in the case of this case, please reveal the chemical formula that best shows the characteristics of the invention: none
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