JP2001089731A - Pressure-sensitive adhesive composition and adhesive optical function member made thereof - Google Patents
Pressure-sensitive adhesive composition and adhesive optical function member made thereofInfo
- Publication number
- JP2001089731A JP2001089731A JP26542099A JP26542099A JP2001089731A JP 2001089731 A JP2001089731 A JP 2001089731A JP 26542099 A JP26542099 A JP 26542099A JP 26542099 A JP26542099 A JP 26542099A JP 2001089731 A JP2001089731 A JP 2001089731A
- Authority
- JP
- Japan
- Prior art keywords
- meth
- pressure
- sensitive adhesive
- acrylate
- adhesive composition
- 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.)
- Pending
Links
Landscapes
- Polarising Elements (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は粘着剤組成物、それ
を用いた接着性光学機能部材及び液晶表示素子に関す
る。さらに詳しくは、本発明は、高温高湿条件下におい
ても、被着体との密着性及び接着耐久性に優れると共
に、基材の伸縮に対して追従性を有する粘着剤組成物、
偏光板などにこの粘着剤組成物層を設けた接着性光学機
能部材及び該粘着剤組成物層を介して液晶セル上に偏光
板を配設してなる液晶表示素子に関するものである。The present invention relates to a pressure-sensitive adhesive composition, an adhesive optical functional member using the same, and a liquid crystal display device. More specifically, the present invention provides a pressure-sensitive adhesive composition having excellent adherence to an adherend and excellent adhesion durability even under high-temperature and high-humidity conditions, and having followability to expansion and contraction of a substrate,
The present invention relates to an adhesive optical function member having a pressure-sensitive adhesive composition layer provided on a polarizing plate or the like, and a liquid crystal display device having a polarizing plate disposed on a liquid crystal cell via the pressure-sensitive adhesive composition layer.
【０００２】[0002]
【従来の技術】従来、被着体に粘着剤層を介して貼付さ
れたシートにおいては、高温高湿条件下では、粘着剤の
接着耐久性が不充分であるため、該シートの端部が被着
体から剥がれる場合があるという問題があった。この問
題を解決するために、これまで、粘着剤を構成する樹脂
成分の分子量を上げたり、架橋度を高めるなどの手段が
講じられてきた。しかしながら、このような粘着剤にお
いては、接着耐久性は向上するものの、伸縮の大きな基
材を用いた場合には、その基材の伸縮に粘着剤が追従で
きず、様々なトラブル発生の原因となっていた。2. Description of the Related Art Conventionally, in a sheet adhered to an adherend via an adhesive layer, the adhesive endurance of the adhesive under high-temperature and high-humidity conditions is insufficient. There has been a problem that it may come off from the adherend. In order to solve this problem, measures such as increasing the molecular weight of the resin component constituting the adhesive and increasing the degree of crosslinking have been taken. However, in such pressure-sensitive adhesives, although the adhesive durability is improved, when a substrate having a large expansion and contraction is used, the pressure-sensitive adhesive cannot follow the expansion and contraction of the substrate, which causes various troubles. Had become.
【０００３】一方、液晶表示素子は、一般に配向層を形
成した２枚の透明電極基板を、スペーサを介して所定の
間隙になるように配向層を内側にして配置し、その周辺
をシールして液晶セルを形成すると共に、該電極基板間
の間隙に液晶材料を挟持させ、さらに、２枚の電極基板
の外側表面に、それぞれ粘着剤層を介して偏光板が配設
された構造を有している。このような液晶表示素子に用
いられる偏光板は、高温高湿条件下において伸縮しやす
いが、粘着剤層がこの偏光板の伸縮に対し、充分に追従
することができず、偏光板に生ずる内部応力によって偏
光板周縁部の吸収軸にゆがみが生じ光の透過率が変化
し、いわゆる「白抜け」と呼ばれる現象が発生しやす
い。したがって、液晶表示素子においては、液晶セル上
に偏光板を配設する際に用いられる粘着剤として、接着
耐久性に優れると共に、特に偏光板の伸縮に対して充分
に追従しうるものが望まれていた。On the other hand, in a liquid crystal display element, generally, two transparent electrode substrates on which an alignment layer is formed are arranged with a predetermined gap therebetween via a spacer, with the alignment layer being inside, and the periphery thereof is sealed. It has a structure in which a liquid crystal cell is formed, a liquid crystal material is sandwiched in a gap between the electrode substrates, and a polarizing plate is further provided on the outer surfaces of the two electrode substrates via an adhesive layer. ing. The polarizing plate used in such a liquid crystal display element easily expands and contracts under high-temperature and high-humidity conditions, but the pressure-sensitive adhesive layer cannot sufficiently follow the expansion and contraction of the polarizing plate, and the internal pressure generated in the polarizing plate is reduced. The stress causes distortion in the absorption axis at the periphery of the polarizing plate, changes the light transmittance, and easily causes a phenomenon called “white spots”. Therefore, in a liquid crystal display device, it is desired that an adhesive used when arranging a polarizing plate on a liquid crystal cell has excellent adhesion durability and can sufficiently follow expansion and contraction of the polarizing plate. I was
【０００４】[0004]
【発明が解決しようとする課題】本発明は、このような
状況下で、高温高湿条件下においても、被着体との密着
性及び接着耐久性に優れると共に、基材の伸縮に対して
追従性を有する粘着剤組成物、偏光板などにこの粘着剤
組成物層を設けた接着性光学機能部材及び該粘着剤組成
物層を介して液晶セル上に偏光板を配設してなる液晶表
示素子を提供することを目的とするものである。Under such circumstances, the present invention provides excellent adhesion to an adherend and excellent adhesion durability even under high-temperature and high-humidity conditions. Adhesive composition having conformability, adhesive optical function member having this adhesive composition layer provided on a polarizing plate or the like, and liquid crystal obtained by disposing a polarizing plate on a liquid crystal cell via the adhesive composition layer It is an object to provide a display element.
【０００５】[0005]
【課題を解決するための手段】本発明者らは、前記目的
を達成するために鋭意研究を重ねた結果、窒素含有官能
基を有する（メタ）アクリル酸エステル共重合体は、該
官能基がもつイオン性や高い極性などから、高温高湿下
においても被着体との結合力が強く、密着性に優れるこ
とに着目した。そして、樹脂成分として、重量平均分子
量が異なる二種の（メタ）アクリル酸エステル単独重合
体又は共重合体を所定の割合で含有させることで、基材
の伸縮に追従させると共に、上記二種の重合体のうちの
いずれか一方を窒素含有官能基を有する（メタ）アクリ
ル酸エステル共重合体とした粘着剤組成物により、その
目的を達成しうることを見出した。本発明は、かかる知
見に基づいて完成したものである。すなわち、本発明
は、（１）樹脂成分として、（Ａ）重量平均分子量５０
万〜２５０万の（メタ）アクリル酸エステル単独重合体
又は共重合体と、（Ｂ）重量平均分子量５０００以上５
０万未満の（メタ）アクリル酸エステル単独重合体又は
共重合体とを、重量比１００：１〜１００：５０の割合
で含み、かつ前記（Ａ）成分及び（Ｂ）成分のうちの少
なくとも一方が、分子中に窒素含有官能基を有する（メ
タ）アクリル酸エステル共重合体であることを特徴とす
る粘着剤組成物を提供するものである。ここで、樹脂成
分中の窒素含有官能基の含有量は、窒素原子として0.０
０５〜５重量％の範囲が好ましい。また、本発明は、
（２）光学機能部材の両面又は片面に、上記（１）の粘
着剤組成物からなる層を設けたことを特徴とする接着性
光学機能部材及び（３）液晶セル上に、上記（１）の粘
着剤組成物からなる層を介して偏光板を配設してなる液
晶表示素子をも提供するものである。Means for Solving the Problems The inventors of the present invention have conducted intensive studies to achieve the above object, and as a result, a (meth) acrylate copolymer having a nitrogen-containing functional group has been obtained. Due to its ionicity and high polarity, we focused on the fact that it has a strong bonding force with the adherend even under high temperature and high humidity, and has excellent adhesion. As a resin component, two or more (meth) acrylic acid ester homopolymers or copolymers having different weight average molecular weights are contained at a predetermined ratio, so as to follow the expansion and contraction of the base material, It has been found that the object can be achieved by a pressure-sensitive adhesive composition in which one of the polymers is a (meth) acrylate copolymer having a nitrogen-containing functional group. The present invention has been completed based on such findings. That is, the present invention provides (1) a resin component having (A) a weight average molecular weight of 50;
(B) a weight-average molecular weight of 5,000 or more and 5 to 2.5 million (meth) acrylate homopolymers or copolymers;
Less than 10,000 (meth) acrylate homopolymer or copolymer in a weight ratio of 100: 1 to 100: 50, and at least one of the components (A) and (B) Is a (meth) acrylic acid ester copolymer having a nitrogen-containing functional group in the molecule. Here, the content of the nitrogen-containing functional group in the resin component is 0.0 as a nitrogen atom.
The range of from 0.5 to 5% by weight is preferred. Also, the present invention
(2) An adhesive optical function member characterized in that a layer made of the pressure-sensitive adhesive composition of (1) is provided on both surfaces or one surface of the optical function member, and (3) a liquid crystal cell as described in (1) above. The present invention also provides a liquid crystal display device in which a polarizing plate is provided via a layer made of the pressure-sensitive adhesive composition.
【０００６】[0006]
【発明の実施の形態】本発明の粘着剤組成物において
は、重量平均分子量が異なる二種の（メタ）アクリル酸
エステル単独重合体又は共重合体が用いられる。なお、
ここで、（メタ）アクリル酸エステルとは、アクリル酸
エステル又はメタクリル酸エステルの両方を意味する。
本発明においては、（Ａ）成分の (メタ）アクリル酸エ
ステル単独重合体又は共重合体として、重量平均分子量
が５０万〜２５０万の範囲にあるものが用いられる。こ
の（Ａ）成分の重量平均分子量が５０万未満では密着性
や接着耐久性が不充分であり、２５０万を超えると基材
の伸縮に対する追従性が悪くなる。密着性、接着耐久性
及び追従性などを考慮すると、この（Ａ）成分の好まし
い重量平均分子量は１００万〜２００万の範囲である。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the pressure-sensitive adhesive composition of the present invention, two kinds of (meth) acrylate homopolymers or copolymers having different weight average molecular weights are used. In addition,
Here, the (meth) acrylate means both an acrylate and a methacrylate.
In the present invention, a (meth) acrylate homopolymer or copolymer as the component (A) having a weight average molecular weight in the range of 500,000 to 2.5 million is used. If the weight average molecular weight of the component (A) is less than 500,000, the adhesion and the adhesion durability are insufficient, and if it exceeds 2.5 million, the ability to follow the expansion and contraction of the base material is poor. In consideration of the adhesion, the adhesion durability and the followability, the preferred weight average molecular weight of the component (A) is in the range of 1,000,000 to 2,000,000.
【０００７】一方、（Ｂ）成分の（メタ）アクリル酸エ
ステル単独重合体又は共重合体として、重量平均分子量
が５０００以上５０万未満の範囲にあるものが用いられ
る。この重量平均分子量が５０００未満では充分な密着
性や接着耐久性が得られず、５０万以上では基材の伸縮
に対する追従性の向上効果が発揮されない。密着性，接
着耐久性及び追従性などを考慮すると、この（Ｂ）成分
の好ましい重量平均分子量は５万〜４０万の範囲であ
る。なお、上記重量平均分子量は、標準物質としてポリ
スチレンを用い、ゲルパーミエーションクロマトグラフ
ィー（ＧＰＣ）法により測定した値である。前記（Ａ）
成分及び（Ｂ）成分の単独重合体に用いられるモノマ
ー、又は共重合体の主成分として用いられるモノマー
（以下（イ）成分モノマーと称する。）としては、エス
テルを形成するアルコール成分のアルキル基の炭素数が
１〜２０の（メタ）アクリル酸アルキルエステルが好ま
しく、例えば（メタ）アクリル酸メチル，（メタ）アク
リル酸エチル，（メタ）アクリル酸プロピル，（メタ）
アクリル酸ｎ−ブチル，（メタ）アクリル酸ｉ−ブチ
ル，（メタ）アクリル酸ペンチル，（メタ）アクリル酸
ヘキシル，（メタ）アクリル酸シクロヘキシル，（メ
タ）アクリル酸２−エチルヘキシル，（メタ）アクリル
酸イソオクチル，（メタ）アクリル酸デシル，（メタ）
アクリル酸ドデシル，（メタ）アクリル酸ミリスチル，
（メタ）アクリル酸パルミチル，（メタ）アクリル酸ス
テアリルなどが挙げられる。これらの（イ）成分のモノ
マーは単独で用いてもよく、二種以上を組み合わせて用
いてもよい。On the other hand, as the component (B), a (meth) acrylate homopolymer or copolymer having a weight average molecular weight in the range of 5,000 to less than 500,000 is used. When the weight average molecular weight is less than 5,000, sufficient adhesion and adhesion durability cannot be obtained, and when the weight average molecular weight is 500,000 or more, the effect of improving the ability to follow the expansion and contraction of the substrate is not exhibited. In consideration of adhesion, adhesion durability, and followability, the preferred weight average molecular weight of the component (B) is in the range of 50,000 to 400,000. The weight average molecular weight is a value measured by gel permeation chromatography (GPC) using polystyrene as a standard substance. (A)
The monomer used for the homopolymer of the component and the component (B) or the monomer used as the main component of the copolymer (hereinafter referred to as the component (a) monomer) includes an alkyl group of an alcohol component forming an ester. Preferred are alkyl (meth) acrylates having 1 to 20 carbon atoms, such as methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, and (meth) acrylate.
N-butyl acrylate, i-butyl (meth) acrylate, pentyl (meth) acrylate, hexyl (meth) acrylate, cyclohexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, (meth) acrylic acid Isooctyl, decyl (meth) acrylate, (meth)
Dodecyl acrylate, myristyl (meth) acrylate,
Palmityl (meth) acrylate, stearyl (meth) acrylate, and the like. These monomers of component (a) may be used alone or in combination of two or more.
【０００８】一方、共重合体に用いられるコモノマー
（ただし、後述の窒素含有官能基を有するモノマー以外
のモノマーであり、以下（ロ）成分コモノマーと称す
る。）としては、例えば（メタ）アクリル酸２−ヒドロ
キシエチル，（メタ）アクリル酸２−ヒドロキシプロピ
ル，（メタ）アクリル酸３−ヒドロキシプロピル，（メ
タ）アクリル酸２−ヒドロキシブチル，（メタ）アクリ
ル酸３−ヒドロキシブチル，（メタ）アクリル酸４−ヒ
ドロキシブチルなどの（メタ）アクリル酸ヒドロキシア
ルキルエステル、アクリル酸，メタクリル酸，クロトン
酸，マレイン酸，イタコン酸，シトラコン酸，無水マレ
イン酸などのエチレン性不飽和カルボン酸やその酸無水
物、酢酸ビニル，プロピオン酸ビニルなどのビニルエス
テル、エチレン，プロピレン，イソブチレンなどのオレ
フィン、塩化ビニル，ビニリデンクロリドなどのハロゲ
ン化オレフィン、スチレン，α−メチルスチレンなどの
スチレン系単量体、ブタジエン，イソプレン，クロロプ
レンなどのジエン系単量体などが挙げられる。これらの
（ロ）成分のコモノマーは単独で用いてもよく、二種以
上を組み合わせて用いてもよい。On the other hand, a comonomer used in the copolymer (a monomer other than a monomer having a nitrogen-containing functional group described later, hereinafter referred to as a (b) component comonomer) includes, for example, (meth) acrylic acid 2 -Hydroxyethyl, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, 3-hydroxybutyl (meth) acrylate, 4 (meth) acrylate -Hydroxyalkyl (meth) acrylates such as hydroxybutyl, ethylenically unsaturated carboxylic acids such as acrylic acid, methacrylic acid, crotonic acid, maleic acid, itaconic acid, citraconic acid, maleic anhydride and their acid anhydrides, acetic acid Vinyl esters such as vinyl and vinyl propionate, ethylene, Ren, olefins such as isobutylene, vinyl chloride, halogenated olefins such as vinylidene chloride, styrene, alpha-styrene monomers such as methyl styrene, butadiene, isoprene, and the like diene monomers such as chloroprene. These comonomers of the component (b) may be used alone or in combination of two or more.
【０００９】共重合体における上記（ロ）成分のコモノ
マー由来の単位の含有量は、通常0.１〜２０重量％、好
ましくは0.５〜１０重量％の範囲で選定される。本発明
の粘着剤組成物においては、前記（Ａ）成分及び（Ｂ）
成分のうちのいずれか一方が、分子中に窒素含有官能基
を有する（メタ）アクリル酸エステル共重合体である。
この共重合体における窒素含有官能基としては、特に制
限はないが、このような窒素含有官能基の例としては、
−ＮＨ2 ，＝ＮＨ， −ＣＯＮＨ2 ，−ＮＨＲ，−ＣＯ
ＮＨＲ，−ＮＨＣＯＯ−， −ＮＨＣＯＮＨ−， −Ｎ
Ｒ2 （ここでＲは有機基）などが挙げられる。The content of the unit derived from the comonomer of the component (b) in the copolymer is usually selected in the range of 0.1 to 20% by weight, preferably 0.5 to 10% by weight. In the pressure-sensitive adhesive composition of the present invention, the component (A) and the component (B)
One of the components is a (meth) acrylate copolymer having a nitrogen-containing functional group in the molecule.
The nitrogen-containing functional group in this copolymer is not particularly limited, but examples of such a nitrogen-containing functional group include:
-NH 2, = NH, -CONH 2 , -NHR, -CO
NHR, -NHCOO-, -NHCONH-, -N
R 2 (where R is an organic group) and the like.
【００１０】分子中に窒素含有官能基を有する（メタ）
アクリル酸エステル共重合体に用いられる窒素含有官能
基を有するコモノマー（以下（ハ）成分コモノマーと称
する。）としては、例えば、アクリルアミド，メタクリ
ルアミド，ジメチルアクリルアミド，ジメチルメタクリ
ルアミド，Ｎ−メチルアクリルアミド，Ｎ−メチルメタ
クリルアミド，Ｎ−メチロールアクリルアミド，Ｎ−メ
チロールメタクリルアミドなどのアクリルアミド類、
（メタ）アクリル酸モノメチルアミノエチル，（メタ）
アクリル酸モノエチルアミノエチル，（メタ）アクリル
酸モノメチルアミノプロピル，（メタ）アクリル酸モノ
エチルアミノプロピルなどの（メタ）アクリル酸モノア
ルキルアミノアルキル、（メタ）アクリル酸ジメチルア
ミノメチル，（メタ）アクリル酸ジメチルアミノエチ
ル，（メタ）アクリル酸ジメチルアミノプロピルなどの
（メタ）アクリル酸ジメチルアミノアルキル、アクリロ
イルモルホリン、ビニルピリジン、Ｎ−ビニルピロリド
ン、Ｎ−ビニルホルムアミド、分子中に−ＮＨＣＯＯ−
基及び／又は−ＮＨＣＯＮＨ−基を有するビニル系モノ
マーなどを挙げることができる。さらにはポリイソシア
ネート化合物やポリエチレンイミン化合物を用いて窒素
を含む結合を形成したモノマーを用いてもよい。この
（ハ）成分コモノマーは、単独で用いてもよく、二種以
上を組み合わせて用いてもよい。(Meth) having a nitrogen-containing functional group in the molecule
Examples of the comonomer having a nitrogen-containing functional group (hereinafter referred to as component (c) comonomer) used in the acrylate copolymer include, for example, acrylamide, methacrylamide, dimethylacrylamide, dimethylmethacrylamide, N-methylacrylamide, N Acrylamides such as -methylmethacrylamide, N-methylolacrylamide, N-methylolmethacrylamide,
Monomethylaminoethyl (meth) acrylate, (meth)
Monoalkylaminoalkyl (meth) acrylates such as monoethylaminoethyl acrylate, monomethylaminopropyl (meth) acrylate, monoethylaminopropyl (meth) acrylate, dimethylaminomethyl (meth) acrylate, (meth) acrylic Dimethylaminoalkyl (meth) acrylates such as dimethylaminoethyl dimethyl, dimethylaminopropyl (meth) acrylate, acryloylmorpholine, vinylpyridine, N-vinylpyrrolidone, N-vinylformamide, and -NHCOO-
And / or a vinyl monomer having a -NHCONH- group. Further, a monomer having a nitrogen-containing bond formed using a polyisocyanate compound or a polyethyleneimine compound may be used. The component (c) comonomer may be used alone or in combination of two or more.
【００１１】本発明の粘着剤組成物においては、上記
（ハ）成分の窒素含有官能基を有するコモノマー由来の
単位の含有量は、密着性及び接着耐久性などの面から、
樹脂成分、すなわち（Ａ）成分と（Ｂ）成分の合計中
に、窒素原子として、通常0.００５〜５重量％の範囲に
なるように選定される。0.００５重量％未満では、被着
体との密着性が不足するおそれがあり、５重量％を超え
ると、高温高湿条件下において粘着剤が黄変することが
ある。本発明の粘着剤組成物において用いられる（メ
タ）アクリル酸エステル共重合体（窒素含有官能基を有
するもの又は有しないもの）は、その共重合形態につい
ては特に制限はなく、ランダム，ブロック，グラフト共
重合体のいずれであってもよい。前記（Ａ）成分と
（Ｂ）成分の含有割合は、重量比１００：１〜１００：
５０の範囲で選定される。（Ｂ）成分の含有量が上記範
囲より少ないと基材の伸縮に対する追従性が不充分であ
り、また上記範囲を超えると密着性や接着耐久性が低下
する。追従性，密着性及び接着耐久性のバランスなどの
点から、（Ａ）成分と（Ｂ）成分の好ましい含有割合
は、重量比１００：３〜１００：４０の範囲であり、特
に好ましくは１００：５〜１００：３０の範囲である。[0011] In the pressure-sensitive adhesive composition of the present invention, the content of the unit derived from the comonomer having a nitrogen-containing functional group as the component (c) is determined from the viewpoints of adhesion and adhesion durability.
In the total of the resin component, that is, the component (A) and the component (B), a nitrogen atom is usually selected so as to be in a range of 0.005 to 5% by weight as a nitrogen atom. If the amount is less than 0.005% by weight, the adhesion to the adherend may be insufficient. If the amount exceeds 5% by weight, the pressure-sensitive adhesive may yellow under high-temperature and high-humidity conditions. The (meth) acrylate copolymer (with or without a nitrogen-containing functional group) used in the pressure-sensitive adhesive composition of the present invention is not particularly limited in its copolymer form, and may be random, block, or graft. Any of copolymers may be used. The content ratio of the component (A) and the component (B) is 100: 1 to 100:
It is selected in the range of 50. If the content of the component (B) is less than the above range, the ability to follow the expansion and contraction of the substrate is insufficient, and if it exceeds the above range, the adhesion and the adhesion durability are reduced. From the viewpoint of the balance between followability, adhesion and adhesion durability, the preferred content ratio of the component (A) and the component (B) is in the range of 100: 3 to 100: 40 by weight, particularly preferably 100: 40. The range is 5 to 100: 30.
【００１２】本発明の粘着剤組成物には、本発明の目的
が損なわれない範囲で、所望により、公知の各種添加
剤、例えば粘着付与剤，可塑剤，酸化防止剤，耐熱安定
剤，充填剤，カップリング剤などを適宜含有させること
ができる。また、本発明の粘着剤組成物には、エポキシ
系化合物，イソシアネート系化合物，金属キレート化合
物などの架橋剤を加え架橋させてもよく、あるいは、放
射線架橋性化合物及び必要により光重合開始剤を加え、
紫外線や電子線などの放射線を照射して架橋させてもよ
い。放射線架橋性化合物としてはトリメチロールプロパ
ントリアクリレート，ペンタエリスリトールトリアクリ
レート，ヘキサンジオールジアクリレートなどのアクリ
レートモノマー、エチレングリコールジビニルエーテ
ル，ジエチレングリコールジビニルエーテルなどのビニ
ルエーテル化合物、ビスフェノールＡジグリシジルエー
テル，エチレングリコールジグリシジルエーテルなどの
エホキシ化合物などが挙げられる。次に、本発明の接着
性光学機能部材は、光学機能部材の両面又は片面に、前
記粘着剤組成物からなる層（以下、粘着剤層と略称す
る。）を設けたものである。この粘着剤層の厚さは、通
常５〜１００μｍ、好ましくは１０〜６０μｍの範囲で
ある。The pressure-sensitive adhesive composition of the present invention may contain, if desired, various known additives such as tackifiers, plasticizers, antioxidants, heat stabilizers, and fillers, as long as the objects of the present invention are not impaired. Agents, coupling agents and the like can be appropriately contained. The pressure-sensitive adhesive composition of the present invention may be cross-linked by adding a cross-linking agent such as an epoxy compound, an isocyanate compound, or a metal chelate compound, or may be added with a radiation-crosslinkable compound and, if necessary, a photopolymerization initiator. ,
Crosslinking may be performed by irradiating radiation such as ultraviolet rays or electron beams. Examples of the radiation crosslinking compound include acrylate monomers such as trimethylolpropane triacrylate, pentaerythritol triacrylate and hexanediol diacrylate, vinyl ether compounds such as ethylene glycol divinyl ether and diethylene glycol divinyl ether, bisphenol A diglycidyl ether, and ethylene glycol diglycidyl ether. And the like. Next, the adhesive optical functional member of the present invention is provided with a layer made of the above-mentioned adhesive composition (hereinafter, abbreviated as an adhesive layer) on both surfaces or one surface of the optical functional member. The thickness of this pressure-sensitive adhesive layer is usually in the range of 5 to 100 μm, preferably 10 to 60 μm.
【００１３】この接着性光学機能部材においては、所望
により、上記粘着剤層上に剥離シートを設けてもよい。
剥離シートとしては、例えばグラシン紙，コート紙，ラ
ミネート紙などの紙及び各種プラスチックフィルムに、
シリコーン樹脂などの剥離剤を塗布したものなどが挙げ
られる。この剥離シートの厚さについては特に制限はな
いが、通常２０〜１５０μｍ程度である。本発明の接着
性光学機能部材に用いられる光学機能部材としては、例
えば偏光板，反射防止板，位相差板，視野角拡大フィル
ムなどを挙げることができるが、これらの中で偏光板が
好適である。上記偏光板としては、通常透明高分子フィ
ルムを一軸方向に延伸配向させ、配向分子間隙にヨウ素
及び／又は二色性染料などを吸着配向させてなる偏光フ
ィルムの両面を保護フィルムでカバーしたものが用いら
れる。上記透明高分子フィルムは、現在ポリビニルアル
コールフィルムがほとんどあり、そして保護フィルムと
しては、トリアセチルセルロースが多用されている。こ
の偏光板には、偏光フィルムとして、例えばヨウ素系偏
光フィルム，染料系偏光フィルム，カラー偏光フィル
ム，ポリビニレン偏光フィルム，赤外偏光フィルム，紫
外偏光フィルムなどを用いたものがあるが、本発明にお
いては、特に制限はなくいずれのものも用いることがで
きる。In this adhesive optical function member, if desired, a release sheet may be provided on the pressure-sensitive adhesive layer.
As a release sheet, for example, paper such as glassine paper, coated paper, laminated paper and various plastic films,
One coated with a release agent such as a silicone resin may be used. The thickness of the release sheet is not particularly limited, but is usually about 20 to 150 μm. Examples of the optical functional member used in the adhesive optical functional member of the present invention include a polarizing plate, an antireflection plate, a retardation plate, a viewing angle widening film, and the like. Among these, the polarizing plate is preferable. is there. As the above-mentioned polarizing plate, a transparent polymer film which is usually stretched and oriented in a uniaxial direction, and iodine and / or a dichroic dye is adsorbed and orientated in the intermolecular gap, and both surfaces of the polarizing film are covered with protective films. Used. Currently, most of the transparent polymer films are polyvinyl alcohol films, and triacetyl cellulose is frequently used as a protective film. In this polarizing plate, there is a polarizing film using, for example, an iodine-based polarizing film, a dye-based polarizing film, a color polarizing film, a polyvinylene polarizing film, an infrared polarizing film, an ultraviolet polarizing film, and the like. There is no particular limitation, and any of them can be used.
【００１４】また、該偏光板は、用途別では、液晶表示
素子用（デジタル時計，電卓，計測器系ディスプレイ，
壁掛けテレビ，光学的欠陥検出器用など），反射光の除
去用（サングラス，写真フィルム用など），光量調整用
（写真用フィルター，濃度可変フィルター用など），光
ロックへの応用（自動車のヘッドライトの防眩用，透視
防止用など），偏光干渉利用装置用（歪みの検査器，舞
台照明，広告用ディスプレイ用など）などがあるが、い
ずれの用途の偏光板も用いることができる。これらの用
途の中で液晶表示素子用の偏光板が好ましく用いられ
る。次に、本発明の液晶表示素子は、液晶セル上に、前
記本発明の粘着剤組成物層を介して偏光板を配設したも
のであって、一般に図１に示す構造を有している。図１
は、本発明の液晶表示素子の一例の構成を示す断面図で
ある。The polarizing plate is used for a liquid crystal display element (digital clock, calculator, display for measuring instrument system,
Applications for wall-mounted TVs, optical defect detectors, etc., removal of reflected light (for sunglasses, photographic films, etc.), adjustment of light intensity (for photographic filters, variable density filters, etc.), application to light locks (car headlights) For anti-glare, anti-transparency, etc.) and for a device utilizing polarized light interference (for a distortion inspection device, stage lighting, advertising display, etc.), and any type of polarizing plate can be used. Among these uses, a polarizing plate for a liquid crystal display element is preferably used. Next, the liquid crystal display element of the present invention has a structure in which a polarizing plate is provided on a liquid crystal cell via the pressure-sensitive adhesive composition layer of the present invention, and generally has a structure shown in FIG. . FIG.
FIG. 1 is a cross-sectional view illustrating a configuration of an example of a liquid crystal display element of the present invention.
【００１５】図１で示すように、本発明の液晶表示素子
１０においては、表面に所望のパターンの透明導電膜
２，２’を有し、その上に配向膜３，３’を設けて配向
処理が施されてなる２枚の透明基板１，１’が対向に配
設され、スペーサ４により均一な間隔を保持しながらシ
ール剤５で接着され、その密閉空間に液晶材料６が封入
されて液晶セルが形成されている。そして、この液晶セ
ルの透明基板１，１’の外側表面に、それぞれ本発明の
粘着剤組成物層７，７’を介して偏光板８，８’が配設
された構造を有している。本発明の液晶表示素子におい
ては、本発明の粘着剤組成物を用いて、液晶セル上に偏
光板が貼着されているため、高温高湿条件下において
も、液晶セルと密着性に優れ、かつ接着耐久性にも優れ
ると共に、偏光板の伸縮に対して追従性を有し、いわゆ
る「白抜け」の現象が発生しない。As shown in FIG. 1, the liquid crystal display element 10 of the present invention has a transparent conductive film 2, 2 'having a desired pattern on the surface, and an alignment film 3, 3' provided thereon. The two transparent substrates 1 and 1 ′ subjected to the processing are disposed to face each other, adhered with a sealant 5 while maintaining a uniform interval by a spacer 4, and a liquid crystal material 6 is sealed in the closed space. A liquid crystal cell is formed. The liquid crystal cell has a structure in which polarizing plates 8, 8 'are disposed on the outer surfaces of the transparent substrates 1, 1' via the pressure-sensitive adhesive composition layers 7, 7 'of the present invention, respectively. . In the liquid crystal display element of the present invention, using the pressure-sensitive adhesive composition of the present invention, since a polarizing plate is adhered on the liquid crystal cell, even under high temperature and high humidity conditions, the liquid crystal cell and excellent adhesion, In addition to being excellent in adhesion durability, it has a follow-up property to the expansion and contraction of the polarizing plate, and the phenomenon of so-called "white spots" does not occur.
【００１６】[0016]
【実施例】次に、本発明を実施例によりさらに詳しく説
明するが、本発明は、これらの例によってなんら限定さ
れるものではない。 実施例１〜５及び比較例１，２ 第１表に示す組成の粘着剤組成物を調製し、厚さ５０μ
ｍのポリエチレンテレフタレートフィルムの表面に厚さ
２５μｍの粘着剤層を設け、約１００℃で１分間加熱乾
燥させた。次に、この粘着剤層付きフィルムをガラス板
に貼付し、粘着力（ＪＩＳ Ｚ０２３７準拠）を測定す
るとともに、６５℃，９５％ＲＨ（相対湿度）の条件で
５００時間放置後の剥がれの有無を目視観察し、接着耐
久性を評価した。結果を第２表に示す。Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. Examples 1 to 5 and Comparative Examples 1 and 2 A pressure-sensitive adhesive composition having the composition shown in Table 1 was prepared and had a thickness of 50 μm.
An adhesive layer having a thickness of 25 μm was provided on the surface of a polyethylene terephthalate film having a thickness of 25 m and dried by heating at about 100 ° C. for 1 minute. Next, the film with the pressure-sensitive adhesive layer was stuck on a glass plate, and the adhesive strength (according to JIS Z0237) was measured, and the presence or absence of peeling after standing at 65 ° C. and 95% RH (relative humidity) for 500 hours was determined. It was visually observed to evaluate the adhesion durability. The results are shown in Table 2.
【００１７】[0017]
【表１】 [Table 1]
【００１８】[0018]
【表２】 [Table 2]
【００１９】（注） ・ＢＡ／ＨＥＡ：アクリル酸ｎ−ブチル／アクリル酸２
−ヒドロキシエチル共重合体（単量体単位重量比＝９９
／１） ・ＢＡ／ＡＡ：アクリル酸ｎ−ブチル／アクリル酸共重
合体（単量体単位重量比＝９６／４） ・ＢＡ／ＨＥＡ／ＡＡｍ：アクリル酸ｎ−ブチル／アク
リル酸２−ヒドロキシエチル／アクリルアミド共重合体
（単量体単位重量比＝９８／１／１） ・ＢＡ／ＤＭＡＡｍ／ＨＥＡ：アクリル酸ｎ−ブチル／
ジメチルアクリルアミド／アクリル酸２−ヒドロキシエ
チル共重合体（単量体単位重量比＝６８／３０／２） ・ＢＡ／ＡＡ／ＡＡｍ：アクリル酸ｎ−ブチル／アクリ
ル酸／アクリルアミド共重合体（単量体単位重量比＝９
８／１／１） ・ＢＡ／ＡＡｍ：アクリル酸ｎ−ブチル／アクリルアミ
ド共重合体（単量体単位重量比＝９９／１） ・ＢＡ／ＤＭＡＥＭＡ：アクリル酸ｎ−ブチル／メタク
リル酸ジメチルアミノエチル共重合体（単量体単位重量
比＝９９／１） ・ＢＡ：アクリル酸ｎ−ブチル単独重合体 ・ＢＡ／ＭＭＡ：アクリル酸ｎ−ブチル／メタクリル酸
メチル共重合体（単量体単位重量比＝９５／１５） ・コロネートＬ：日本ポリウレタン（株）製，イソシア
ネート系 ・タケネートＤ−１４０：武田薬品工業（株）製，イソ
シアネート系 ・ＴＧＭＸＡ：三菱ガス化学（株）製，エポキシ系(Note) BA / HEA: n-butyl acrylate / acrylic acid 2
-Hydroxyethyl copolymer (monomer unit weight ratio = 99
/ 1) BA / AA: n-butyl acrylate / acrylic acid copolymer (monomer unit weight ratio = 96/4) BA / HEA / AAm: n-butyl acrylate / 2-hydroxyethyl acrylate / Acrylamide copolymer (monomer unit weight ratio = 98/1/1) BA / DMAAm / HEA: n-butyl acrylate /
Dimethylacrylamide / 2-hydroxyethyl acrylate copolymer (monomer unit weight ratio = 68/30/2) BA / AA / AAm: n-butyl acrylate / acrylic acid / acrylamide copolymer (monomer Unit weight ratio = 9
8/1/1) BA / AAm: n-butyl acrylate / acrylamide copolymer (monomer unit weight ratio = 99/1) BA / DMAEMA: n-butyl acrylate / dimethylaminoethyl methacrylate Polymer (monomer unit weight ratio = 99/1) BA: n-butyl acrylate homopolymer BA / MMA: n-butyl acrylate / methyl methacrylate copolymer (monomer unit weight ratio = 95/15) ・ Coronate L: Nippon Polyurethane Co., Ltd., isocyanate type ・ Takenate D-140: Takeda Pharmaceutical Co., Ltd., isocyanate type ・ TGMXA: Mitsubishi Gas Chemical Co., Ltd., Epoxy type
【００２０】実施例６ 実施例１において、タケネートＤ−１４０の代わりに放
射線架橋性化合物ヘキサンジオールジアクリレート１重
量部及び光重合開始剤１−ヒドロキシ−シクロヘキシル
−フェニルケトン0.０４重量部を用いた以外は、実施例
１と同様にして粘着剤組成物を調製し、厚さ５０μｍの
ポリエチレンテレフタレートフィルムの表面に厚さ２５
μｍの粘着剤層を設け、紫外線を照射して架橋させた。
次に、この粘着剤層付きフィルムをガラス板に貼付し、
実施例１と同様にして接着耐久性及び粘着力を評価し
た。結果を第２表に示す。Example 6 In Example 1, 1 part by weight of a radiation-crosslinkable compound hexanediol diacrylate and 0.04 part by weight of a photopolymerization initiator 1-hydroxy-cyclohexyl-phenyl ketone were used in place of Takenate D-140. Except for the above, a pressure-sensitive adhesive composition was prepared in the same manner as in Example 1, and a 25 μm thick polyethylene terephthalate film having a thickness of 25 μm was formed on the surface thereof.
A μm pressure-sensitive adhesive layer was provided and cross-linked by irradiating ultraviolet rays.
Next, this film with an adhesive layer is attached to a glass plate,
In the same manner as in Example 1, adhesion durability and adhesive strength were evaluated. The results are shown in Table 2.
【００２１】[0021]
【表３】 [Table 3]
【００２２】実施例７〜１２ 実施例１〜６の粘着剤組成物を用い、偏光板（住友化学
工業（株）製，商品名ＳＲ−１８６２Ａ）上に厚さ２５
μｍの粘着剤層を設けた。この粘着剤層付き偏光板を吸
収軸が偏光板長辺に対して４５°となるように６４ｍｍ
×８８ｍｍに裁断し、ガラス板（Ｈコートガラス、日本
板硝子（株）製）の両面に吸収軸が直交するように貼付
した。次に、これを６５℃、９５％ＲＨ（相対温度）の
条件下に１００時間放置した後、目視により剥がれの有
無を観察して接着耐久性を評価すると共に、光の透過性
（白抜け）を観察した。その結果を第３表に示す。 比較例３ 比較例１の粘着剤組成物を用い、実施例７と同様な操作
を行った。その結果を第３表に示す。Examples 7 to 12 Using the pressure-sensitive adhesive compositions of Examples 1 to 6, a thickness of 25 was applied to a polarizing plate (trade name: SR-1862A, manufactured by Sumitomo Chemical Co., Ltd.).
A μm pressure-sensitive adhesive layer was provided. The polarizing plate with the pressure-sensitive adhesive layer is 64 mm so that the absorption axis is at 45 ° to the long side of the polarizing plate.
The plate was cut into a size of 88 mm, and affixed to both sides of a glass plate (H-coated glass, manufactured by Nippon Sheet Glass Co., Ltd.) so that the absorption axes were orthogonal. Next, after leaving this under the conditions of 65 ° C. and 95% RH (relative temperature) for 100 hours, the adhesion durability is evaluated by visually observing the presence or absence of peeling, and the light transmittance (white spots) is evaluated. Was observed. Table 3 shows the results. Comparative Example 3 The same operation as in Example 7 was performed using the pressure-sensitive adhesive composition of Comparative Example 1. Table 3 shows the results.
【００２３】[0023]
【表４】 [Table 4]
【００２４】[0024]
【発明の効果】本発明の粘着剤組成物は、高温高湿条件
下においても、被着体との密着性に優れ、かつ接着耐久
性にも優れると共に、基材の伸縮に対して追従性を有し
ており、特に液晶セル表面に偏光板を貼着させるのに好
適に用いられる。この粘着剤組成物を用いて、液晶セル
表面に偏光板を配設してなる本発明の液晶表示素子は、
接着耐久性に優れ、かつ白抜け現象が起こりにくい。The pressure-sensitive adhesive composition of the present invention has excellent adhesion to an adherend and excellent adhesion durability even under high-temperature and high-humidity conditions, and has the ability to follow the expansion and contraction of a substrate. It is particularly suitably used for attaching a polarizing plate to a liquid crystal cell surface. Using this pressure-sensitive adhesive composition, a liquid crystal display element of the present invention in which a polarizing plate is provided on the surface of a liquid crystal cell,
Excellent adhesion durability, and the white spot phenomenon is unlikely to occur.
【図１】 本発明の液晶表示素子の一例の構成を示す断
面図である。FIG. 1 is a cross-sectional view illustrating a configuration of an example of a liquid crystal display device of the present invention.
１，１’：透明基板 ２，２’：透明導電膜 ３，３’：配向膜 ４ ：スペーサ ５ ：シール剤 ６ ：液晶材料 ７，７’：粘着剤組成物層 ８，８’：偏光板 １０ ：液晶表示素子 1, 1 ': transparent substrate 2, 2': transparent conductive film 3, 3 ': alignment film 4: spacer 5: sealant 6: liquid crystal material 7, 7': adhesive composition layer 8, 8 ': polarizing plate 10: Liquid crystal display element
───────────────────────────────────────────────────── フロントページの続き (72)発明者 樫尾 幹広 埼玉県蕨市錦町５丁目14番42号 リンテッ ク株式会社内 Ｆターム(参考） 2H049 BB51 BB54 BC22 4J040 DF031 DF061 DF062 GA13 LA01 LA06 LA07 MA10 MB09 NA17 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Mikihiro Kashio 5-14-42 Nishiki-cho, Warabi-shi, Saitama F-term (reference) in Lintec Corporation 2H049 BB51 BB54 BC22 4J040 DF031 DF061 DF062 GA13 LA01 LA06 LA07 MA10 MB09 NA17
Claims (5)
５０万〜２５０万の（メタ）アクリル酸エステル単独重
合体又は共重合体と、（Ｂ）重量平均分子量５０００以
上５０万未満の（メタ）アクリル酸エステル単独重合体
又は共重合体とを、重量比１００：１〜１００：５０の
割合で含み、かつ前記（Ａ）成分及び（Ｂ）成分のうち
の少なくとも一方が、分子中に窒素含有官能基を有する
（メタ）アクリル酸エステル共重合体であることを特徴
とする粘着剤組成物。1. A resin component comprising (A) a (meth) acrylate homopolymer or copolymer having a weight average molecular weight of 500,000 to 2.5 million and (B) a (meth) acrylate having a weight average molecular weight of 5,000 to less than 500,000. ) An acrylate homopolymer or a copolymer in a weight ratio of 100: 1 to 100: 50, and at least one of the component (A) and the component (B) contains nitrogen in the molecule. A pressure-sensitive adhesive composition comprising a (meth) acrylate copolymer having a containing functional group.
が、窒素原子として0.００５〜５重量％である請求項１
記載の粘着剤組成物。2. The content of a nitrogen-containing functional group in a resin component is 0.005 to 5% by weight as a nitrogen atom.
The pressure-sensitive adhesive composition as described in the above.
１又は２記載の粘着剤組成物からなる層を設けたことを
特徴とする接着性光学機能部材。3. An adhesive optical functional member, wherein a layer comprising the pressure-sensitive adhesive composition according to claim 1 is provided on one or both surfaces of the optical functional member.
記載の接着性光学機能部材。4. The optical function member is a polarizing plate.
The adhesive optical functional member according to the above.
剤組成物からなる層を介して偏光板を配設してなる液晶
表示素子。5. A liquid crystal display device comprising a polarizing plate disposed on a liquid crystal cell via a layer comprising the pressure-sensitive adhesive composition according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26542099A JP2001089731A (en) | 1999-09-20 | 1999-09-20 | Pressure-sensitive adhesive composition and adhesive optical function member made thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26542099A JP2001089731A (en) | 1999-09-20 | 1999-09-20 | Pressure-sensitive adhesive composition and adhesive optical function member made thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001089731A true JP2001089731A (en) | 2001-04-03 |
Family
ID=17416919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26542099A Pending JP2001089731A (en) | 1999-09-20 | 1999-09-20 | Pressure-sensitive adhesive composition and adhesive optical function member made thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001089731A (en) |
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Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5379930A (en) * | 1976-12-23 | 1978-07-14 | Sekisui Chem Co Ltd | Pressure-sensitive adhesive composition |
| JPS5394519A (en) * | 1977-01-31 | 1978-08-18 | Sekisui Chem Co Ltd | Pressure sensitive adhesive composition |
| JPS543136A (en) * | 1977-06-08 | 1979-01-11 | Arakawa Chem Ind Co Ltd | Pressure-sensitive adhesives |
| JPS5565278A (en) * | 1978-11-09 | 1980-05-16 | Sekisui Chem Co Ltd | Pressure-sensitive adhesive composition |
| JPS568476A (en) * | 1979-06-30 | 1981-01-28 | Nitto Electric Ind Co Ltd | Water-dispersible pressure-sensitive adhesive composition |
| JPS6147772A (en) * | 1984-08-15 | 1986-03-08 | Toagosei Chem Ind Co Ltd | Resin composition for pressure-sensitive adhesive |
| JPS638045A (en) * | 1986-06-25 | 1988-01-13 | Toyoda Gosei Co Ltd | Installation structure of molding |
| JPS6466283A (en) * | 1987-09-08 | 1989-03-13 | Nitto Denko Corp | Pressure-sensitive adhesive polarizing plate |
| JPH01178568A (en) * | 1987-12-29 | 1989-07-14 | Nitto Denko Corp | Pressure-sensitive adhesive |
| JPH01178567A (en) * | 1987-12-29 | 1989-07-14 | Nitto Denko Corp | Pressure-sensitive adhesive |
| JPH02202571A (en) * | 1989-01-31 | 1990-08-10 | Sekisui Chem Co Ltd | Aqueous pressure-sensitive adhesive composition |
| JPH04248889A (en) * | 1991-01-25 | 1992-09-04 | Nippon Synthetic Chem Ind Co Ltd:The | Tacky adhesive composition |
| JPH05320605A (en) * | 1992-05-27 | 1993-12-03 | Sony Chem Corp | Self-crosslinkable pressure-sensitive adhesive composition |
| JPH08500138A (en) * | 1992-08-06 | 1996-01-09 | ザ・ダウ・ケミカル・カンパニー | Pressure sensitive adhesive latex composition |
| JPH0827239A (en) * | 1994-07-12 | 1996-01-30 | Lintec Corp | Energy beam-curing type pressure-sensitive tacky agent composition and its utilization |
| JPH1036788A (en) * | 1996-07-19 | 1998-02-10 | Toagosei Co Ltd | Heat sensitive tacky sheet |
| JPH1046126A (en) * | 1996-08-01 | 1998-02-17 | Nippon Synthetic Chem Ind Co Ltd:The | Pressure-sensitive adhesive composition |
| JPH10504552A (en) * | 1994-08-23 | 1998-05-06 | エルティエス ローマン テラピイ−システム ゲーエムベーハー | Medical pressure-sensitive adhesive |
| JPH10279907A (en) * | 1997-04-09 | 1998-10-20 | Soken Chem & Eng Co Ltd | Pressure sensitive adhesive composition for polarizing plate and polarizing plate |
| JPH11164878A (en) * | 1997-12-04 | 1999-06-22 | Teijin Ltd | New medical polymer |
| JP2000044904A (en) * | 1998-08-03 | 2000-02-15 | Nitto Denko Corp | Acrylic pressure-sensitive adhesive tape and transdermal formulation |
| JP2000044911A (en) * | 1998-07-28 | 2000-02-15 | Sony Chem Corp | Emulsion pressure-sensitive acrylic adhesive composition |
-
1999
- 1999-09-20 JP JP26542099A patent/JP2001089731A/en active Pending
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5379930A (en) * | 1976-12-23 | 1978-07-14 | Sekisui Chem Co Ltd | Pressure-sensitive adhesive composition |
| JPS5394519A (en) * | 1977-01-31 | 1978-08-18 | Sekisui Chem Co Ltd | Pressure sensitive adhesive composition |
| JPS543136A (en) * | 1977-06-08 | 1979-01-11 | Arakawa Chem Ind Co Ltd | Pressure-sensitive adhesives |
| JPS5565278A (en) * | 1978-11-09 | 1980-05-16 | Sekisui Chem Co Ltd | Pressure-sensitive adhesive composition |
| JPS568476A (en) * | 1979-06-30 | 1981-01-28 | Nitto Electric Ind Co Ltd | Water-dispersible pressure-sensitive adhesive composition |
| JPS6147772A (en) * | 1984-08-15 | 1986-03-08 | Toagosei Chem Ind Co Ltd | Resin composition for pressure-sensitive adhesive |
| JPS638045A (en) * | 1986-06-25 | 1988-01-13 | Toyoda Gosei Co Ltd | Installation structure of molding |
| JPS6466283A (en) * | 1987-09-08 | 1989-03-13 | Nitto Denko Corp | Pressure-sensitive adhesive polarizing plate |
| JPH01178568A (en) * | 1987-12-29 | 1989-07-14 | Nitto Denko Corp | Pressure-sensitive adhesive |
| JPH01178567A (en) * | 1987-12-29 | 1989-07-14 | Nitto Denko Corp | Pressure-sensitive adhesive |
| JPH02202571A (en) * | 1989-01-31 | 1990-08-10 | Sekisui Chem Co Ltd | Aqueous pressure-sensitive adhesive composition |
| JPH04248889A (en) * | 1991-01-25 | 1992-09-04 | Nippon Synthetic Chem Ind Co Ltd:The | Tacky adhesive composition |
| JPH05320605A (en) * | 1992-05-27 | 1993-12-03 | Sony Chem Corp | Self-crosslinkable pressure-sensitive adhesive composition |
| JPH08500138A (en) * | 1992-08-06 | 1996-01-09 | ザ・ダウ・ケミカル・カンパニー | Pressure sensitive adhesive latex composition |
| JPH0827239A (en) * | 1994-07-12 | 1996-01-30 | Lintec Corp | Energy beam-curing type pressure-sensitive tacky agent composition and its utilization |
| JPH10504552A (en) * | 1994-08-23 | 1998-05-06 | エルティエス ローマン テラピイ−システム ゲーエムベーハー | Medical pressure-sensitive adhesive |
| JPH1036788A (en) * | 1996-07-19 | 1998-02-10 | Toagosei Co Ltd | Heat sensitive tacky sheet |
| JPH1046126A (en) * | 1996-08-01 | 1998-02-17 | Nippon Synthetic Chem Ind Co Ltd:The | Pressure-sensitive adhesive composition |
| JPH10279907A (en) * | 1997-04-09 | 1998-10-20 | Soken Chem & Eng Co Ltd | Pressure sensitive adhesive composition for polarizing plate and polarizing plate |
| JPH11164878A (en) * | 1997-12-04 | 1999-06-22 | Teijin Ltd | New medical polymer |
| JP2000044911A (en) * | 1998-07-28 | 2000-02-15 | Sony Chem Corp | Emulsion pressure-sensitive acrylic adhesive composition |
| JP2000044904A (en) * | 1998-08-03 | 2000-02-15 | Nitto Denko Corp | Acrylic pressure-sensitive adhesive tape and transdermal formulation |
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| JP2006169438A (en) * | 2004-12-17 | 2006-06-29 | Mitsubishi Plastics Ind Ltd | Pressure-sensitive adhesive sheet for bonding of optical element |
| JP2012063775A (en) * | 2005-04-28 | 2012-03-29 | Nippon Synthetic Chem Ind Co Ltd:The | Manufacturing method for optical laminate with adhesive layer |
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| JP2007186577A (en) * | 2006-01-12 | 2007-07-26 | Nitto Denko Corp | Adhesive composition and adhesive sheet containing the same |
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