JP7319279B2 - 光学的透明感圧接着剤及びその使用 - Google Patents
光学的透明感圧接着剤及びその使用 Download PDFInfo
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- JP7319279B2 JP7319279B2 JP2020535970A JP2020535970A JP7319279B2 JP 7319279 B2 JP7319279 B2 JP 7319279B2 JP 2020535970 A JP2020535970 A JP 2020535970A JP 2020535970 A JP2020535970 A JP 2020535970A JP 7319279 B2 JP7319279 B2 JP 7319279B2
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- DVQHRBFGRZHMSR-UHFFFAOYSA-N sodium methyl 2,2-dimethyl-4,6-dioxo-5-(N-prop-2-enoxy-C-propylcarbonimidoyl)cyclohexane-1-carboxylate Chemical compound [Na+].C=CCON=C(CCC)[C-]1C(=O)CC(C)(C)C(C(=O)OC)C1=O DVQHRBFGRZHMSR-UHFFFAOYSA-N 0.000 description 1
- HLWRUJAIJJEZDL-UHFFFAOYSA-M sodium;2-[2-[bis(carboxymethyl)amino]ethyl-(carboxymethyl)amino]acetate Chemical compound [Na+].OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC([O-])=O HLWRUJAIJJEZDL-UHFFFAOYSA-M 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- GQHFRBUSENSDPM-UHFFFAOYSA-N tetradec-7-yne-6,9-diol Chemical compound CCCCCC(O)C#CC(O)CCCCC GQHFRBUSENSDPM-UHFFFAOYSA-N 0.000 description 1
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- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 description 1
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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
- 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]
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/014—Stabilisers against oxidation, heat, light or ozone
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/005—Stabilisers against oxidation, heat, light, ozone
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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
- C09J153/00—Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J153/02—Vinyl aromatic monomers and conjugated dienes
- C09J153/025—Vinyl aromatic monomers and conjugated dienes modified
-
- 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
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
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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
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/12—Polysiloxanes containing silicon bound to hydrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
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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
- 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
- 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
- C09J2301/302—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 the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
-
- 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
-
- 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
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/416—Additional features of adhesives in the form of films or foils characterized by the presence of essential components use of irradiation
-
- 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
- C09J2425/00—Presence of styrenic polymer
-
- 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
- C09J2453/00—Presence of block copolymer
-
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Description
光学的透明接着剤は、可視光範囲において90%を超える透過率およびUV光範囲において10%未満である透過率を有する。光学的透明接着剤は、特に、LCDディスプレイ、LEDディスプレイ、フレキシブルで折り畳み式ディスプレイ、およびタッチスクリーンなどの電子デバイスを接着するためのフィルム、テープまたは封止剤をラミネートするのに適する。
(a)約85~約99.7%の感圧接着剤および
(b)約0.3~15%の
(i)約0.1~約5%のヒドロキシフェニルベンゾトリアゾールまたはその誘導体、
(ii)約0.1~約5%のベンゾフェノンまたはその誘導体、および
(iii)約0.1~約5%のヒンダードアミン光安定剤を含む、UV吸収剤の混合物を含み、
硬化接着剤は、ASTM E903に従って測定して、380nm以下では10%未満の透過率、410nm以上は90%より大きい透過率を有する。
本明細書に引用された全ての文献は、参照によりその全体が本明細書に組み込まれる。
(i)約0.1~約5%のヒドロキシフェニルベンゾトリアゾールまたはその誘導体、
(ii)約0.1~5%のベンゾフェノンまたはその誘導体、および
(iii)約0.1~5%のヒンダードアミン光安定剤を含む、UV吸収剤の混合物を含む。光学的透明接着剤組成物は、ASTM E903に従って測定したとき、380nm未満で10%未満であり、410nm超では90%を超える透過率(%T)を有する。
(1)有機溶媒中で硬化可能な光学的透明接着剤請求項1を調製すること、(2)硬化可能な光学的透明接着剤溶液を第1の剥離ライナーにコーティングすること、(3)約60~約150℃の温度で有機溶媒を蒸発させて、実質的に無溶媒のフィルムを形成することおよび(4)実質的に無溶媒のフィルム上に第2の剥離ライナーをラミネートすることを含む光学的透明接着フィルムを作製する方法を目的とする。さらに、本方法は、(5)実質的に無溶媒のフィルムをUVA&V1-5J/cm2の線量で250~410nmのUV光に照射する工程を含む。
ED)ディスプレイ、電気泳動ディスプレイ、および陰極線管ディスプレイから選択される。
温度変化に対する弾性率(G’)、損失弾性率(G”)、およびtanδを得るためにTA instruments Dynamic Mechanical Analyzer ModelRDA IIIを使用した。この機器は、Rhiosソフトウェアバージョン4.3.2によって制御された。直径8mmで、約2mmのギャップで隔てられた平行プレートを使用した。試料を装填し、約-100℃に冷却し、時間プログラムを開始した。プログラムテストでは、5℃間隔で、各温度で10秒間の浸漬時間(soak time)を取って、温度を上昇させた。対流オーブンを窒素で連続的に通気した。周波数は10rad/sに維持した。試験開始時の初期ひずみは0.05%であった(プレートの外縁部で)。ソフトウェア内のオートストレインオプションを使用して、テスト中に正確に測定可能なトルクを維持した。このオプションは、ソフトウェアによって許容される最大の歪みが80%になるように構成されていた。オートストレインプログラムは、保証されていれば、以下の手順で各温度上昇時のひずみを調整した。トルクが200g-cm未満であった場合、歪みを、現在の値の25%だけ増加させた。トルクが1200g-cmを上回った場合、現在の値の25%だけ減少させた。200~1200g-cmのトルクでは、その温度上昇時に歪みを変化させなかった。せん断貯蔵または弾性率(G’)およびせん断損失弾性率(G”)は、ソフトウェアによってトルクおよび歪みデータから計算される。tanδ(タンデルタ)としても知られている、それらの比、G”/G’も計算した。
T-剥離接着試験は、Instron Sintech 1/Dを用いて、ASTM D1876に従って実施した。手順は以下の通りであった:(1)接着フィルムを2枚の2~3ミルのPETフィルムの間に移す;(2)UVA&V1~5J/cm2の照射量でD-バルブ(Fusion Systems)を用いて接着剤をUV硬化させる;(3)試料を幅1.0インチ×長さ6~12インチの長いストリップに切断する;(4)23℃、相対湿度50%の条件下で12時間養生する;(5)T-剥離試験片の各端部をInstronの別々の試験グリップでクランプし、23℃および50%相対湿度でT剥離接着試験を、ボンドラインの長さに12.0インチ/分の速度で行う。
ASTM E903およびASTM D1003に従って、AgilentのCary300を用いて光学特性(T%、ヘイズ%および黄色度b*)を測定した。透過率の好ましい試験方法は次のとおりである:(1)イソプロパノールで3回拭き取った75mm×50mm石英スライド上に接着剤の小さなフィルムを置く;(2)第2の石英スライドを力を掛けながら接着剤に付着する;(3)UVA&Vを1~5J/cm2でD-バルブ(Fusion Systems)により、接着剤を硬化させる;分光器で300~900nmの光透過率を測定する。
OPPANOL B15およびN50は、BASFから入手可能なポリイソブチレンである。
SR262、CN308は、Sartomerから入手可能な反応性ジアクリレートである。
IrgacureTPOおよびTPO-Lは、BASFから入手可能な硬化剤である。
SEPTON4033は、KurarayからのSEEPSトリブロック共重合体である。
IndopolH1500は、Ineos USA LLCから入手可能な油である。
Risella430油は、Shell Oilから入手可能である。
Elastomer350N(Mn350,000g/mol)は、Wackerからのシロキサンポリマーである。
Pt、S27、ビニルトリメトキシシラン、HMS301、メタクリルオキシプロピルトリメトキシシランは、Gelestから入手可能である。
PDMS-MAはメタクリルオキシプロピルジメトキシ末端ポリジメチルシロキサン(Mn40,000g/モル)であり、Henkelから入手可能である。
MQは、GelestまたはMomentiveから入手可能なヒドロキシ官能性シリコーン樹脂(Mn~8000g/mol)である。
ヘプタンおよびn-ブチルリチウム(1.6Mヘキサン中)(nBuLi)は、Aldrichから入手可能である。
表1中の全ての成分を1ガロン缶中で室温で24時間混合してUV硬化性PIB感圧接着剤(PSA)を作製することにより、例1を作製した。
表3の全ての成分を1ガロンの缶中で室温で24時間混合してスチレン-ブタジエン共重合体(SBC)PSAを作製することにより、例2を作製した。
アクリル感圧接着剤、例3は、3口500mlフラスコ中で、アクリル酸(0.5g)、2-EHA(43.5g)、4-HBA(6.0g)およびGMA(6.0g)をアセトン(50g)中で混合して作製した。混合物を窒素ガス下で15分間、アセトン温度で還流した。Azo-64(0.015g)を混合物に添加し、還流をさらに1時間続けた。Azo-64(0.015g)のアセトン(20g)溶液を2時間かけて滴下し、さらに2時間混合し続けた。反応生成物をガラスジャー中に排出し、固体を50%固形分に調整した。
例4のUV硬化性シリコーン接着剤は、シリコーンポリマー(Wacker Elastomer 350N、5g)、シリコーンMQ樹脂(25g)、PDMS-MA(20g)、メタクリルオキシプロピルトリメトキシシラン(0.3g)およびヘプタン(50g)の混合物を形成することにより作製し、アルゴン下の還流下で攪拌した。反応触媒nBuLi(0.2mL、ヘキサン中1.6M)を表6に示すように約2時間混合した。反応混合物を還流下で1時間CO2でパージし、次いで生成物を室温まで冷却した。TPOL(0.1g)を添加した。生成物を15分間混合し、ガラスジャーに充填した。
例5の熱硬化性シリコーン接着剤は、シリコーンポリマー(Wacker Elastomer 350N、24g)、シリコーンMQ樹脂(24g)、ビニルトリメトキシシラン(2.0g)、ヘプタン(50g)の混合物を形成することにより作製し、アルゴンの還流下で攪拌した。反応触媒nBuLi(0.2mL、ヘキサン中1.6M)を添加し、アルゴンの還流下で約2時間攪拌した。反応混合物を還流下で1時間CO2でパージし、次いで生成物を室温に冷却した。Pt(0)(500ppm)およびシリコーン架橋剤HMS301を添加した。生成物を15分間混合し、次いでガラスジャーに充填した。
Claims (12)
- 光学的透明接着剤組成物であって、
(a)85~99.7%の、
(i)94.5%~99.998%のビニル官能性シリコーン、
(ii)0.001~5%のヒドリド官能性シロキサンポリマーまたはオリゴマー、および
(iii)0.001~0.5%のPt触媒を含む熱硬化性シリコーン感圧接着剤および
(b)0.3~15%の
(i)0.1~5%のヒドロキシフェニルベンゾトリアゾールまたはその誘導体、
(ii)0.1~5%のベンゾフェノンまたはその誘導体、および
(iii)0.1~5%のヒンダードアミン光安定剤を含む、UV吸収剤の混合物を含み、
光学的透明接着剤組成物は、ASTM E903に従って測定して、380nm未満では10%未満、410nm超では90%を超える透過率(%T)を有する光学的透明接着剤組成物。 - (i)ビニル官能性シリコーンが、1つ以上のビニル官能基を含むポリジメチルシロキサンポリマー、シリコーン樹脂、およびシランの混合物および/または反応生成物であり、
(ii)ヒドリド官能性シロキサンポリマーが、SiMe 2 Hの末端官能基、またはSiMeHのペンダント官能基、またはそれらの混合物を有し、および400~100,000g/molの平均重量分子量を有するポリジメチルシロキサンポリマーまたはオリゴマーであり、および
(iii)Pt触媒が、シュパイアー触媒H 2 PtCl 6 、カルシュテット触媒、またはアルケン安定化白金(0)である、
請求項1に記載の光学的透明接着剤組成物。 - 光学的透明接着剤組成物であって、
(a)85~99.7%の、
(i)99.5%~99.999%の(メタ)アクリルオキシ官能性シリコーンおよび
(ii)0.001~0.5%の光開始剤触媒を含むUV硬化性シリコーン感圧接着剤、および
(b)0.3~15%の
(i)0.1~5%のヒドロキシフェニルベンゾトリアゾールまたはその誘導体、
(ii)0.1~5%のベンゾフェノンまたはその誘導体、および
(iii)0.1~5%のヒンダードアミン光安定剤を含む、UV吸収剤の混合物を含み、
光学的透明接着剤組成物は、ASTM E903に従って測定して、380nm未満では15%未満、410nm超では90%を超える透過率(%T)を有する光学的透明接着剤組成物。 - (メタ)アクリルオキシ官能性シリコーンが、1つ以上の(メタ)アクリルオキシ官能基を含むポリジメチルシロキサンポリマー、シリコーン樹脂、およびシランまたは/およびシロキサンポリマーの混合物および/または反応生成物である、請求項3に記載の光学的透明接着剤組成物。
- 光学的透明接着剤組成物であって、
(a)85~99.7%の、
(i)1~30%の(メタ)アクリレートモノマー、(メタ)アクリレートオリゴマーまたはそれらの混合物、
(ii)10~90%のポリイソブチレンポリマー、
(iii)5%~50%の液体希釈剤、粘着付与剤、またはそれらの混合物および
(iv)0.001~5%の光開始剤を含むUV硬化性ポリイソブチレン系感圧接着剤組成物、および
(b)0.3~15%の
(i)0.1~5%のヒドロキシフェニルベンゾトリアゾールまたはその誘導体、
(ii)0.1~5%のベンゾフェノンまたはその誘導体、および
(iii)0.1~5%のヒンダードアミン光安定剤を含む、UV吸収剤の混合物を含み、
光学的透明接着剤組成物は、ASTM E903に従って測定して、380nm未満では10%未満、410nm超では90%を超える透過率(%T)を有する光学的透明接着剤組成物。 - (i)(メタ)アクリレートモノマーが単官能性または多官能性(メタ)アクリルモノマーであり、
(メタ)アクリレートオリゴマーが、(メタ)アクリル官能化ポリイソブチレン、ポリブタジエン、水素化ポリブタジエン、または分子あたり1より多い(メタ)アクリル官能基を有するポリオレフィンであり、反応性官能基が、末端メタクリレート、ペンダントメタクリレート、末端アクリレート、および/またはペンダントアクリレートおよびその混合物からなる群から選択され、(メタ)アクリレートオリゴマーまたはその混合物は、1000~95,000g/モルの重量平均分子量(Mw)を有し、
(iii)液体希釈剤が、鉱油、ワックス、ポリイソブチレン、ポリブテン、または合成液体ポリマーである、請求項5に記載の光学的透明接着剤組成物。 - 光学的透明接着剤組成物であって、
(a)85~99.7%の、
(i)5%~30%の(メタ)アクリレートモノマー、(メタ)アクリレートオリゴマー、またはそれらの混合物、
(ii)5%~30%の完全に水素化され飽和のソフトブロックを有するスチレンブロック共重合体、
(iii)55%~79.99%の液体希釈剤、粘着付与剤、またはそれらの混合物および
(iv)0.01%~5%の光開始剤
を含むUV硬化性スチレンブロック共重合体系感圧接着剤、および
(b)0.3~15%の
(i)0.1~5%のヒドロキシフェニルベンゾトリアゾールまたはその誘導体、
(ii)0.1~5%のベンゾフェノンまたはその誘導体、および
(iii)0.1~5%のヒンダードアミン光安定剤を含む、UV吸収剤の混合物を含み、
光学的透明接着剤組成物は、ASTM E903に従って測定して、380nm未満では20%未満、410nm超では90%を超える透過率(%T)を有する光学的透明接着剤組成物。
- スチレンブロック共重合体が完全に水素化され、飽和のソフトブロックを有し、ソフトブロックがエチレン、プロピレン、ブチレン、イソブチレン、エチレン-プロピレン、エチレン-ブチレンおよびそれらの混合物からなる群から選択される、請求項7に記載の光学的透明接着剤組成物。
- スチレンブロック共重合体が、トリブロック、ジブロック、またはそれらの混合物である、請求項8に記載の光学的透明接着剤組成物。
- 請求項1~9のいずれか1項に記載の光学的透明接着剤組成物を含む物品。
- 光学的透明接着フィルムを作製する方法であって、
(1)有機溶媒中で請求項1~9のいずれか1項に記載の硬化性光学的透明接着剤組成物を調製すること、
(2)硬化性光学的透明接着剤組成物溶液を第1の剥離ライナーにコーティングすること、
(3)60~150℃の温度で有機溶媒を蒸発させて、実質的に無溶媒のフィルムを形成することおよび
(4)実質的に無溶媒のフィルム上に第2の剥離ライナーをラミネートすることを含む方法。 - さらに
(5)実質的に無溶媒のフィルムをUVA&V1-5J/cm2の線量で250~410nmのUV光に照射する工程を含む、請求項11に記載の光学的透明接着フィルムを作製する方法。
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WO2019133580A1 (en) | 2019-07-04 |
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EP3732265A4 (en) | 2021-10-06 |
US11427739B2 (en) | 2022-08-30 |
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