JP6071231B2 - 粘着剤および粘着シート - Google Patents
粘着剤および粘着シート Download PDFInfo
- Publication number
- JP6071231B2 JP6071231B2 JP2012082766A JP2012082766A JP6071231B2 JP 6071231 B2 JP6071231 B2 JP 6071231B2 JP 2012082766 A JP2012082766 A JP 2012082766A JP 2012082766 A JP2012082766 A JP 2012082766A JP 6071231 B2 JP6071231 B2 JP 6071231B2
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- JP
- Japan
- Prior art keywords
- pressure
- sensitive adhesive
- meth
- acrylic acid
- acid ester
- Prior art date
- Legal status (The legal status 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 status listed.)
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- 239000000853 adhesive Substances 0.000 title claims description 88
- 230000001070 adhesive effect Effects 0.000 title claims description 88
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- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 78
- 239000010410 layer Substances 0.000 claims description 71
- 239000000203 mixture Substances 0.000 claims description 59
- 239000012790 adhesive layer Substances 0.000 claims description 25
- 230000015572 biosynthetic process Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 14
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- 238000012360 testing method Methods 0.000 claims description 11
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- 230000009257 reactivity Effects 0.000 claims description 2
- 239000000178 monomer Substances 0.000 description 42
- -1 2-ethylhexyl Chemical group 0.000 description 37
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 36
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- 125000000524 functional group Chemical group 0.000 description 35
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- 239000000243 solution Substances 0.000 description 22
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 21
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- 125000000217 alkyl group Chemical group 0.000 description 10
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 10
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- RBQRWNWVPQDTJJ-UHFFFAOYSA-N methacryloyloxyethyl isocyanate Chemical compound CC(=C)C(=O)OCCN=C=O RBQRWNWVPQDTJJ-UHFFFAOYSA-N 0.000 description 7
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
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- 125000004069 aziridinyl group Chemical group 0.000 description 4
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 4
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- 229920000297 Rayon Polymers 0.000 description 3
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- DKPFZGUDAPQIHT-UHFFFAOYSA-N butyl acetate Chemical compound CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 3
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 3
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- 239000012956 1-hydroxycyclohexylphenyl-ketone Substances 0.000 description 2
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- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 2
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- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
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- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 description 2
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
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Description
ゲル分率変動率(%)=|(G2−G1)/G2|×100
から算出されるゲル分率変動率が3%以内であり、引張試験による破断伸長率が100〜250%、かつ破断応力が0.2〜0.6N/mm2であることを特徴とする粘着剤を提供する(発明1)。
〔粘着剤の物性〕
本実施形態に係る粘着剤は、
粘着剤層形成直後のゲル分率をG1、粘着剤層形成から23℃、50%RHの環境下にて7日間保管した後のゲル分率をG2としたときに、以下の式
ゲル分率変動率(%)=|(G2−G1)/G2|×100
から算出されるゲル分率変動率が3%以内であり、
引張試験による破断伸長率が100〜250%、かつ破断応力が0.2〜0.6N/mm2である、
ものである。かかる物性を満たす粘着剤は、凹凸追従性および耐熱性に優れるものとなる。その理由は明らかではないが、上記のゲル分率変動率も、破断伸長率および破断応力も、凹凸追従性および耐熱性の双方に関連しているものと考えられる。
本実施形態に係る粘着剤は、活性エネルギー線硬化型の粘着剤であることが好ましい。なお、活性エネルギー線硬化型の粘着剤とは、活性エネルギー線照射後に粘着剤としての使用に供される粘着剤をいう。
粘着性組成物Pは、(メタ)アクリル酸エステル重合体(A)と、反応性(メタ)アクリル酸エステル重合体(B)のそれぞれを製造し、それらを混合するとともに、所望により、任意の段階で光重合開始剤(C)、架橋剤(D)、シランカップリング剤(E)等を添加することで製造することができる。
本実施形態に係る粘着剤は、粘着性組成物Pを所望の対象物に塗布し乾燥させた後、活性エネルギー線の照射により粘着性組成物Pを硬化させることによって、好ましく得ることができる。
図1に示すように、第1の実施形態に係る粘着シート1Aは、下から順に、剥離シート12と、剥離シート12の剥離面に積層された粘着剤層11と、粘着剤層11に積層された基材13とから構成される。
1.重合体(A1)の調製
攪拌機、温度計、還流冷却器、滴下装置および窒素導入管を備えた反応容器に、アクリル酸n−ブチル76.5質量部、アクリル酸メトキシエチル20質量部、アクリル酸3.0質量部、アクリル酸2−ヒドロキシエチル0.5質量部、酢酸エチル200質量部、および2,2'−アゾビスイソブチロニトリル0.08質量部を仕込み、上記反応容器内の空気を窒素ガスで置換した。この窒素雰囲気下中で攪拌しながら、反応溶液を60℃に昇温し、16時間反応させた後、室温まで冷却した。ここで、得られた溶液の一部を後述する方法で分子量を測定し、重量平均分子量80万の重合体(A1)の生成を確認した。
攪拌機、温度計、還流冷却器、滴下装置および窒素導入管を備えた反応容器に、アクリル酸n−ブチル85質量部、アクリル酸2−ヒドロキシエチル(HEA)15質量部、酢酸エチル200質量部、2,2'−アゾビスイソブチロニトリル0.16質量部、および2−メルカプトエタノール0.3質量部を仕込み、上記反応容器内の空気を窒素ガスで置換した。この窒素雰囲気下中で攪拌しながら、反応溶液を70℃に昇温し、6時間反応させた後、室温まで冷却し、官能基(x)として水酸基を有する(メタ)アクリル系重合体(b1)を得た。
上記工程(1)で得られた重合体(A1)100質量部(固形分換算値)と、上記工程(2)で得られた重合体(B1)20質量部(固形分換算値)とを混合した後、光重合開始剤(C)としてベンゾフェノンおよび1−ヒドロキシシクロヘキシルフェニルケトンを1:1の質量比で混合したもの(チバ・スペシャリティケミカルズ社製,イルガキュア500)2.0質量部(重合体(B1)100質量部とした場合に光重合開始剤(C)が10質量部に相当する量)を添加し、十分に撹拌することにより、粘着性組成物の希釈溶液を得た。
上記工程(3)で得られた粘着性組成物の希釈溶液を、ポリエチレンテレフタレートフィルムの片面をシリコーン系剥離剤で剥離処理した剥離シート(リンテック社製,SP−PET3811,厚さ:38μm)の剥離処理面にナイフコーターで塗布し、90℃で1分間加熱処理して粘着性組成物の塗膜を得た。
<紫外線照射条件>
・フュージョン社製無電極ランプ Hバルブ使用
・照度600mW/cm2,光量150mJ/cm2
・UV照度・光量計はアイグラフィックス社製「UVPF−36」を使用
重合性二重結合含有化合物(b2)としての2−メタクリロイルオキシエチルイソシアネート(MOI)を、当該MOIのイソシアネート基の量が(メタ)アクリル系重合体(b1)のHEAに対して0.2モル当量となるように、(メタ)アクリル系重合体(b1)と重合性二重結合含有化合物(b2)とを反応させた以外、実施例1の重合体(B1)と同様にして、重合体(B2)を製造した。得られた溶液の一部を後述する方法で分子量を測定し、重量平均分子量5万の重合体(B2)の生成を確認した。
重合体(B)の種類および配合量を表1に示すように変更する以外、実施例1と同様にして粘着剤層付き偏光板を製造した。なお、粘着剤層の厚さは25μmであった。
1.重合体(A2)の調製
攪拌機、温度計、還流冷却器、滴下装置および窒素導入管を備えた反応容器に、アクリル酸n−ブチル76質量部、アクリル酸メチル20質量部、アクリル酸4質量部、酢酸エチル200質量部、および2,2'−アゾビスイソブチロニトリル0.08質量部を仕込み、上記反応容器内の空気を窒素ガスで置換した。この窒素雰囲気下中で攪拌しながら、反応溶液を60℃に昇温し、16時間反応させた後、室温まで冷却した。ここで、得られた溶液の一部を後述する方法で分子量を測定し、重量平均分子量80万の重合体(A2)の生成を確認した。
上記工程(1)で得られた重合体(A2)100質量部(固形分換算値)に、イソシアネート系架橋剤としてトリメチロールプロパンのトリレンジイソシアネート(TDI系)付加物(日本ポリウレタン社製,コロネートL)2.5質量部を添加し、十分に撹拌することにより、粘着性組成物の希釈溶液を得た。
上記工程(2)で得られた粘着性組成物の希釈溶液を使用して、実施例1と同様にして粘着剤層付き偏光板を製造した。なお、粘着剤層の厚さは25μmであった。
<測定条件>
・GPC測定装置:東ソー社製,HLC−8020
・GPCカラム(以下の順に通過):東ソー社製
TSK guard column HXL−H
TSK gel GMHXL(×2)
TSK gel G2000HXL
・測定溶媒:テトラヒドロフラン
・測定温度:40℃
実施例または比較例にて粘着剤層付き偏光板の作製に使用した偏光板に替えて、ポリエチレンテレフタレートフィルムの片面をシリコーン系剥離剤で剥離処理した剥離シート(リンテック社製,SP−PET3801,厚さ:38μm)を使用する以外、実施例または比較例と同様にして、各例に対応した剥離シート/粘着剤層(厚さ25μm)/剥離シートの構成からなる粘着シートを作製した。
ゲル分率(%)=(M2/M1)×100
によって、粘着シート作製直後(粘着剤層形成直後)のゲル分率G1(%)、および粘着シート作製(粘着剤層形成)から23℃、50%RHの環境下にて7日間保管した後のゲル分率G2(%)を算出した。
ゲル分率変動率(%)=|(G2−G1)/G2|×100
によって、ゲル分率変動率(%)を算出した。結果を表2に示す。
測定サンプルとして、ゲル分率の測定に用いた粘着シートと同様の粘着シート(7日間保管済み)を用意した。当該粘着シートの粘着剤層について、ヘイズメーター(日本電色工業社製,NDH2000)を用いて、JIS K7105に準じてヘイズ値(%)を測定した。結果を表2に示す。
実施例または比較例で調製した粘着性組成物を、ポリエチレンテレフタレートフィルムの片面をシリコーン系剥離剤で剥離処理した剥離シート(リンテック社製,SP−PET3811)の剥離処理面に塗布し、100℃で1分間加熱し、粘着性組成物の塗膜を形成した。その塗膜と、ポリエチレンテレフタレートフィルムの片面をシリコーン系剥離剤で剥離処理した別の剥離シート(リンテック社製,SP−PET3801)の剥離処理面とを貼り合わせて、以下の条件で紫外線を照射することにより粘着剤層を形成し、粘着シートを得た。なお、粘着剤層の厚さは25μmであった。
<紫外線照射条件>
・フュージョン社製無電極ランプ Hバルブ使用
・照度600mW/cm2,光量150mJ/cm2
・UV照度・光量計はアイグラフィックス社製「UVPF−36」を使用
実施例または比較例で得られた粘着剤層付き偏光板を、裁断装置(荻野製作所社製スーパーカッター,PN1−600)を用いて233mm×309mmサイズに調整した。剥離シートを剥がして、露出した粘着剤層を介してポリメチルメタクリレート(PMMA)板(三菱レイヨン社製,アクリライトL001透明,厚さ2.0mm)に貼付したのち、栗原製作所製オートクレーブにて0.5MPa、50℃で、20分加圧した。
○:浮き、剥がれ、発泡等が確認されなかった。
×:浮き、剥がれ、発泡等が確認された。
実施例または比較例で調製した粘着性組成物を、厚さ100μmのポリエチレンテレフタレート(PET)フィルムの片面に乾燥後の塗布厚が50μmとなるように塗布し、90℃で1分間加熱処理(乾燥処理)して粘着性組成物の塗膜を得た後、以下の条件で紫外線を照射して粘着剤層を形成し、サンプルを作製した。
<紫外線照射条件>
・フュージョン社製無電極ランプ Hバルブ使用
・照度600mW/cm2,光量150mJ/cm2
・UV照度・光量計はアイグラフィックス社製「UVPF−36」を使用
◎:浮きの長さLが0.1mm未満
○:浮きの長さLが0.1mm以上0.5mm未満
△:浮きの長さLが0.5mm以上1.0mm未満
×:浮きの長さLが1.0mm以上
11…粘着剤層
12,12a,12b…剥離シート
13…基材
Claims (10)
- 重量平均分子量が60万〜200万である(メタ)アクリル酸エステル重合体(A)と、
重量平均分子量が3万〜10万であり、側鎖に重合性二重結合を有する反応性(メタ)アクリル酸エステル重合体(B)と
を含有する粘着性組成物を、活性エネルギー線の照射により硬化させてなる粘着剤であって、
粘着剤層形成直後のゲル分率をG1、粘着剤層形成から23℃、50%RHの環境下にて7日間保管した後のゲル分率をG2としたときに、以下の式
ゲル分率変動率(%)=|(G2−G1)/G2|×100
から算出されるゲル分率変動率が3%以内であり、
引張試験による破断応力が0.2〜0.5N/mm2であり、
粘着剤層形成直後および前記7日間保管後のゲル分率が30〜60%である
ことを特徴とする粘着剤。 - 前記反応性(メタ)アクリル酸エステル重合体(B)の側鎖の重合性二重結合は、イソシアネートを介して側鎖に導入された(メタ)アクリロイル基に含まれるものであることを特徴とする請求項1に記載の粘着剤。
- 前記(メタ)アクリル酸エステル重合体(A)100質量部に対する前記反応性(メタ)アクリル酸エステル重合体(B)の割合は、5〜30質量部であることを特徴とする請求項1または2に記載の粘着剤。
- 前記粘着性組成物は、さらに光重合開始剤(C)を含有することを特徴とする請求項1〜3のいずれか一項に記載の粘着剤。
- 前記反応性(メタ)アクリル酸エステル重合体(B)100質量部に対する前記光重合開始剤(C)の割合は、5〜30質量部であることを特徴とする請求項4に記載の粘着剤。
- 前記活性エネルギー線の照射量が、50〜1000mJ/cm2であることを特徴とする請求項1〜5のいずれか一項に記載の粘着剤。
- ヘイズ値が1.0%以下であることを特徴とする請求項1〜6のいずれか一項に記載の粘着剤。
- 基材と、粘着剤層とを備えた粘着シートであって、
前記粘着剤層は、請求項1〜7のいずれか一項に記載の粘着剤からなる
ことを特徴とする粘着シート。 - 前記基材は、光学部材であることを特徴とする請求項8に記載の粘着シート。
- 2枚の剥離シートと、
前記2枚の剥離シートの剥離面と接するように前記剥離シートに挟持された粘着剤層と
を備えた粘着シートであって、
前記粘着剤層は、請求項1〜7のいずれか一項に記載の粘着剤からなる
ことを特徴とする粘着シート。
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| JP2012082766A JP6071231B2 (ja) | 2012-03-30 | 2012-03-30 | 粘着剤および粘着シート |
| TW102103425A TWI570213B (zh) | 2012-03-30 | 2013-01-30 | Adhesive and adhesive tape |
| KR1020130025940A KR102071640B1 (ko) | 2012-03-30 | 2013-03-12 | 점착제 및 점착 시트 |
| CN201310111386.9A CN103360999B (zh) | 2012-03-30 | 2013-04-01 | 粘着剂以及粘着片 |
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| JP6438817B2 (ja) * | 2015-03-27 | 2018-12-19 | リンテック株式会社 | 粘着性組成物、粘着剤、粘着シートおよび粘着剤層付き光学フィルム |
| JP6754172B2 (ja) * | 2015-03-28 | 2020-09-09 | 株式会社日本触媒 | 内装材 |
| JP6498991B2 (ja) * | 2015-03-31 | 2019-04-10 | リンテック株式会社 | 粘着シートおよび表示体 |
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| JP6895228B2 (ja) * | 2016-05-25 | 2021-06-30 | 王子ホールディングス株式会社 | 粘着シート |
| JP6902377B2 (ja) * | 2017-03-30 | 2021-07-14 | アイカ工業株式会社 | 3層型粘着剤シートの製造方法 |
| JP6979322B2 (ja) * | 2017-10-16 | 2021-12-08 | アイカ工業株式会社 | 3層型粘着剤シート |
| JP6947258B2 (ja) * | 2018-09-05 | 2021-10-13 | 王子ホールディングス株式会社 | 光学部材貼合用粘着シート |
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| JP3594206B2 (ja) | 1995-09-14 | 2004-11-24 | 日本化薬株式会社 | 光学用粘着剤組成物 |
| JP2005344008A (ja) * | 2004-06-03 | 2005-12-15 | Nitto Denko Corp | 剥離可能な感圧性接着シート |
| JP5351420B2 (ja) * | 2008-01-23 | 2013-11-27 | リンテック株式会社 | 粘着シートおよび液晶表示装置 |
| JP4800363B2 (ja) * | 2008-09-26 | 2011-10-26 | 日東電工株式会社 | 光学部材貼り合わせ用粘着シート |
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| JP5969162B2 (ja) * | 2010-07-28 | 2016-08-17 | リンテック株式会社 | 塗膜保護用再剥離型粘着シート |
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