JPS6032869A - Water dispersion type pressure-sensitive adhesive having improved coating performance of screen printing - Google Patents
Water dispersion type pressure-sensitive adhesive having improved coating performance of screen printingInfo
- Publication number
- JPS6032869A JPS6032869A JP13938283A JP13938283A JPS6032869A JP S6032869 A JPS6032869 A JP S6032869A JP 13938283 A JP13938283 A JP 13938283A JP 13938283 A JP13938283 A JP 13938283A JP S6032869 A JPS6032869 A JP S6032869A
- Authority
- JP
- Japan
- Prior art keywords
- sensitive adhesive
- pressure
- viscosity
- screen printing
- water
- 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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Links
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- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はスクリーン印刷塗工性の良いアクリル系の水分
散型感圧接着剤、特にアクリルエマルジョン系水分散型
感圧接着剤に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an acrylic water-dispersed pressure-sensitive adhesive having good screen printing coating properties, and particularly to an acrylic emulsion-based water-dispersed pressure-sensitive adhesive.
近年、アクリル系感圧接着剤はその優れた粘着特性や耐
久性、耐候性などから、従来の天然ゴム系、合成ゴム系
の感圧接着剤に代わって広く普及してきた。In recent years, acrylic pressure-sensitive adhesives have become widely used in place of conventional natural rubber-based and synthetic rubber-based pressure-sensitive adhesives due to their excellent adhesive properties, durability, and weather resistance.
また、このアクリル系感圧接着剤のなかでも、最近では
有機溶剤を使用しない水分散型のものが、省資源、環境
汚染防止、火災予防などの観点から鋭意開発されている
。Among these acrylic pressure-sensitive adhesives, recently, water-dispersible adhesives that do not use organic solvents have been intensively developed from the viewpoints of resource saving, environmental pollution prevention, and fire prevention.
このようなアクリル系の水分散型感圧接着剤は一般にア
クリル酸エステルに必要に応じてメタクリル酸エステル
、酢酸ビニル、スチレン、塩化ビニリデンなどの共重合
性モノマー、アクリル酸などのカルボキシル基含有モノ
マー、2−ヒト四キシエチルメタクリレートなどの水酸
基含有モノマー、アクリルアミド等のアミド基含有モノ
マー、ジアリルフタレート、エチレングリコールジメタ
クリレートなどの架橋性モノマーその他の改質用モノマ
ーあるいは連鎖移動剤、可塑剤等とともに水媒体中で乳
化重合させることによりつくられている。そして通常は
これに消泡剤、増粘剤、トH調整剤、顔料、防かび剤等
を添加し、ナイフコーター、ロールコータ−などの適当
な塗工機でフィルム、紙、シートの基材へ直接塗布ある
いは離型紙から転写塗布する方法で粘着シート、ラベル
、フィルム、ステッカ−等を作り広く使用されている。Such acrylic water-dispersed pressure-sensitive adhesives generally contain acrylic esters, copolymerizable monomers such as methacrylic esters, vinyl acetate, styrene, vinylidene chloride, etc., carboxyl group-containing monomers such as acrylic acid, Hydroxyl group-containing monomers such as 2-human tetraxyethyl methacrylate, amide group-containing monomers such as acrylamide, crosslinking monomers such as diallyl phthalate and ethylene glycol dimethacrylate, other modifying monomers, chain transfer agents, plasticizers, etc. in an aqueous medium. It is made by emulsion polymerization in Then, usually, antifoaming agents, thickeners, heat regulators, pigments, antifungal agents, etc. are added to this, and a suitable coating machine such as a knife coater or roll coater is used to coat the substrate of film, paper, or sheet. It is widely used in the production of adhesive sheets, labels, films, stickers, etc. by direct coating or transfer coating from release paper.
一方従来各種プラスチック、フィルム、板又は金属板に
印刷された印刷物、特にスクリーン印刷されたものを銘
板等として被着体に貼り付けようとする際には、その裏
面に両面粘着テープを貼り、必要なパターンに打抜いて
被着体に貼付ける作業をしなければならず作業性が著し
く悪かった。On the other hand, when pasting printed matter printed on various plastics, films, plates, or metal plates, especially screen printed matter, to an adherend as a nameplate, etc., it is necessary to apply double-sided adhesive tape to the back side of the printed material, and It was necessary to punch out a pattern and attach it to the adherend, resulting in extremely poor workability.
本発明者らはこのような従来の技術に鑑み、感圧接着剤
を直接銘板等の裏面にスクリーン印刷塗工法を用いて塗
布する方法を考え出し、その用途に適した感圧接着剤を
見出した。In view of such conventional technology, the present inventors devised a method of applying a pressure-sensitive adhesive directly to the back surface of a nameplate, etc. using a screen printing coating method, and found a pressure-sensitive adhesive suitable for this purpose. .
即ち本発明はアクリル酸エステル及び/又はメタクリル
酸エステルを主体とする単量体混合物を水媒体中で重合
してなる室温で粘着性を有するポリマーの水分散液から
なる水分散型感圧接着剤であって、水分散型感圧接着剤
のB型粘度計による(ローターの回転速度6 r、p、
m、で測定した粘度)/(前記ローターと同一のロータ
ーの回転数6Or 、p、m、で測定した粘度)で表わ
されるチキントロピックインデックスが2.5〜5.5
の範囲にあることを特徴とするスクリーン印刷塗工性の
良い水分散型感圧接着剤である。That is, the present invention provides a water-dispersed pressure-sensitive adhesive comprising an aqueous dispersion of a polymer that is sticky at room temperature and is obtained by polymerizing a monomer mixture mainly composed of acrylic esters and/or methacrylic esters in an aqueous medium. According to a B-type viscometer for water-dispersed pressure-sensitive adhesives (rotor rotational speed 6 r, p,
The chicken tropic index expressed as: (viscosity measured at m,)/(viscosity measured at the rotation speed of the same rotor as the above rotor, p, m,) is 2.5 to 5.5.
This is a water-dispersible pressure-sensitive adhesive with good screen printing application properties.
スクリーン印刷塗工する場合、その塗工する感圧接着剤
は流動性と液切れ性がともに良好であることが好ましい
。When applying by screen printing, it is preferable that the applied pressure-sensitive adhesive has good fluidity and drainage properties.
通常の水溶液型、溶剤型の感圧接着剤は流動性は良好で
あるが、液切れ性が悪くいつまでも液の垂れが続き作業
性が悪く、一方通常のエマルジョン系水分散型感圧接着
剤は本質的にチキソトロピック性であり、水溶液型、溶
剤型の感圧接着剤とは液の流動性に大きな差異があり、
スクリーン印刷塗工する場合液切れは良好であるがスキ
ージで液をスクリーン布にしごいた際の液の流動性が悪
いため均一な塗膜が得にくい。Ordinary water-based and solvent-based pressure-sensitive adhesives have good fluidity, but they have poor liquid drainage and continue to drip, resulting in poor workability.On the other hand, ordinary emulsion-based water-dispersed pressure-sensitive adhesives It is essentially thixotropic and has a large difference in fluidity from aqueous and solvent-based pressure sensitive adhesives.
When coating by screen printing, the liquid drains well, but it is difficult to obtain a uniform coating because of the poor fluidity of the liquid when squeezed onto the screen cloth with a squeegee.
ところが、アクリルエマルジョン系水分散型感圧接着剤
のチキソトロピック性が一定の範囲にある際に、スキー
ジでしごいた際の液の流動性と液切れ性とが共にスクリ
ーン印刷塗工に適性となるのである。即ちアクリルエマ
ルジョン系水分散型感圧接着剤においてその粘度をB型
粘度計で測定した際(ローターの回転速度6 r、p、
m、で測定した粘度)/(前記ローターと同一のロータ
ーの回転速度6 Or、p、m、で測定した粘度)で表
わされるチキントロピックインデックス(以下rTI値
」と称する)が2.5〜5.5の範囲になるべく粘度を
調整したものがスクリーン印刷塗工に適正となるのであ
る。However, when the thixotropic property of an acrylic emulsion-based water-dispersed pressure-sensitive adhesive is within a certain range, both the fluidity and draining properties of the liquid when squeezed with a squeegee are not suitable for screen printing coating. It will become. That is, when the viscosity of an acrylic emulsion-based water-dispersed pressure-sensitive adhesive is measured using a B-type viscometer (rotation speed of the rotor is 6 r, p,
The chicken tropic index (hereinafter referred to as "rTI value") expressed as viscosity measured at m, / (viscosity measured at rotation speed of the same rotor as the rotor 6 Or, p, m) is 2.5 to 5. A coating whose viscosity is adjusted to within the range of .5 is suitable for screen printing coating.
木兄ゆjでいう粘度及び1゛■値とは、次のような条件
下でめられる値をいう。The viscosity and 1゛■ value referred to by Kinei Yuj refer to values found under the following conditions.
粘 度 計 二B型粘度計 (BM型)使用ローター:
#4
0−ターの回転速度: 60 r、p、In、(T I
値測定の際は00 r*p、In汲び6 r+p、m、
)測定温度 :25℃
測定方法 二上記条件で被測定物中に規定の位置に入れ
た四−クーを回転させ、回転開始
90秒後における指示値を読み、換算
表にて粘度に換算する。Viscosity meter 2B type viscometer (BM type) Rotor used:
#4 Rotation speed of 0-tor: 60 r, p, In, (T I
When measuring the value, use 00 r*p, In 6 r+p, m,
) Measuring temperature: 25°C Measuring method 2. Under the above conditions, rotate the four-couple placed in the specified position in the object to be measured, read the indicated value 90 seconds after the start of rotation, and convert it to viscosity using the conversion table.
印刷インクによるスクリーン印刷は一般に広く行なわれ
ており、本発明に係る感圧接着剤はこのスクリーン印刷
の手法を用いてインクの代わりに塗布されることのでき
るものである。Screen printing using printing ink is generally widely practiced, and the pressure sensitive adhesive according to the present invention can be applied instead of ink using this screen printing technique.
その−例を挙げると、絹、ナイロン、ポリエステル、ス
テンレススチールなどを材料とし微細な小孔を有するス
クリーンを枠に張り、このスクリーンに塗布すべき画線
又は画伯部分を切り抜いたウス紙(ステンシル)を貼り
、これを被塗工物(基材)の上にのせ、スクリーンの裏
面から感圧接着剤を塗布しスキージでしごくことによっ
て、感圧接着剤をスクリーンを通じ切り抜いた画線又は
画伯を通って被塗工物(基材)表面に移行させ、ウス紙
に切り抜いた画線又は画伯通りに感圧接着剤を塗布′1
−るものである。 ゛
この塗工法は同様に画線や画伯を描けるグラビャ塗工法
等の他の版式塗工法と比べて、製版・塗工の工程が簡単
であること、厚盛ができること、被塗工物(基材)の種
類や形状が広く選べる等の多くの特長やメリットを持っ
ているためディスプレー、銘板などの用途に広く用いら
れる。For example, a screen made of silk, nylon, polyester, stainless steel, etc. with minute holes is stretched over a frame, and paper (stencil) is used to cut out the lines or areas to be painted on the screen. , place it on the object to be coated (substrate), apply pressure-sensitive adhesive from the back of the screen, and squeeze with a squeegee to apply the pressure-sensitive adhesive through the screen and through the cut-out drawing line or artist. Transfer the pressure-sensitive adhesive to the surface of the object to be coated (substrate), and apply pressure-sensitive adhesive along the lines cut out on the paper or according to the artist's pattern.'1
-.゛Compared to other plate-type coating methods such as gravure coating, which can similarly draw stroke lines and painters, this coating method has the following advantages: the plate-making and coating process is simple, thick coating is possible, and the coating material (base) is easy to coat. It has many features and benefits, such as a wide range of materials and shapes to choose from, so it is widely used for displays, nameplates, etc.
本発明の感圧接着剤はこのようなディスプレー、銘板な
どの用途に好適であるが、銘板用として用いるのが特に
好ましい。The pressure-sensitive adhesive of the present invention is suitable for use in such displays, nameplates, etc., and is particularly preferably used for nameplates.
これは例えば銘板の表側をインクで通常のスクリーン印
刷をし、同じスクリーンを用いて裏側に感圧接着剤を塗
るという、必要個所に最低限の塗布量で感圧接着剤付き
の銘板を作るという方法が使えるからである。This means, for example, that the front side of the nameplate is screen printed with ink, and then the same screen is used to apply pressure-sensitive adhesive to the back side, creating a nameplate with pressure-sensitive adhesive in the required areas with the minimum amount of application. This is because the method can be used.
本発明に使用されるアクリル系感圧接着剤の製法につき
以下に述べる。The method for producing the acrylic pressure-sensitive adhesive used in the present invention will be described below.
水媒体中で公知のアニオン性乳化剤、ノニオン性乳化剤
1両性乳化剤、カチオン性乳化剤の存在下で、下記の単
量体を重合する。The following monomers are polymerized in an aqueous medium in the presence of a known anionic emulsifier, a nonionic emulsifier, an amphoteric emulsifier, and a cationic emulsifier.
(1) アクリル酸及び/又はメタクリル酸と炭素98
以下の脂肪族第一アルコールとのエステル(以下「(メ
タ)アクリル酸エステル」と称する)を主単量体としこ
れを全単量体の50重量%(以下単に「%」と称する)
以上、好ましくは60%以上。(メタ)アクリル酸エス
テルが50%未満の場合得られる感圧接着剤のタック性
等が悪(なりがちで好ましくない。又、(メタ)アクリ
ル酸エステルとしてはアクリル酸−2−エチルヘキシル
(以下1− HA Jと称する)やアクリル酸ブチル(
以下1BAjと称する)が好ましい。(1) Acrylic acid and/or methacrylic acid and carbon 98
The following esters with aliphatic primary alcohols (hereinafter referred to as "(meth)acrylic acid esters") are the main monomers, and this constitutes 50% by weight of the total monomers (hereinafter simply referred to as "%").
or more, preferably 60% or more. If the (meth)acrylic acid ester is less than 50%, the resulting pressure-sensitive adhesive tends to have poor tackiness, which is undesirable. - HA J) and butyl acrylate (referred to as
(hereinafter referred to as 1BAj) is preferred.
(2) カルボキシル基、水酸基、アミド基、グリシジ
ル基などの極性基を有し炭素−炭素二重結合を1個有す
る不飽和単量体を全単量体の10%以下、好ましくは1
〜5%。これらは凝集方向上のために配合するのである
が、ガラス転移温度が高いので10%を越える量加える
と得られる感圧接着剤のタック性が悪くなりがちである
。(2) Unsaturated monomers having polar groups such as carboxyl groups, hydroxyl groups, amide groups, glycidyl groups and one carbon-carbon double bond account for 10% or less of the total monomers, preferably 1
~5%. These are blended to improve the cohesive direction, but since they have a high glass transition temperature, if they are added in an amount exceeding 10%, the tackiness of the resulting pressure-sensitive adhesive tends to deteriorate.
(3) filQ主単量体と共重合n」能な炭素−炭素
二重結合を1個有するエチレン性不飽和単量体例えば、
スチレン、酢酸ビニル、塩化ビニリデン、シクロヘキシ
ルアクリレート、ステアリルメタクリレートを全単量体
の50%以下、好ましくは30%以下。これらは凝集方
向上のために配合するが、50%を越えると得られる感
圧接着剤の粘着力が低下しやすい。(3) Ethylenically unsaturated monomers having one carbon-carbon double bond that can be copolymerized with the filQ main monomer, for example,
Styrene, vinyl acetate, vinylidene chloride, cyclohexyl acrylate, and stearyl methacrylate account for 50% or less of the total monomers, preferably 30% or less. These are added to improve the cohesive direction, but if the amount exceeds 50%, the adhesive strength of the resulting pressure-sensitive adhesive tends to decrease.
(4) さらに必要に応じ、エチレングリコールジメタ
クリレート、ジアリルフタレート等の炭素−炭素二重結
合を2個以上有する不飽和単量体を全単量体の5%以下
。(4) Furthermore, if necessary, unsaturated monomers having two or more carbon-carbon double bonds, such as ethylene glycol dimethacrylate and diallyl phthalate, may be contained in an amount of 5% or less of the total monomers.
これらの単量体に、必要に応じて連鎖移動剤、可塑剤等
を加えラジカル共重合を行な(・、室温で粘着性を有す
る(メタ)アクリル酸エステルを主単量体とするポリマ
ーの水分散液を製造する。A chain transfer agent, a plasticizer, etc. are added to these monomers as necessary to perform radical copolymerization. Produce an aqueous dispersion.
このポリマーが室温で粘着性を有1−るためには、でき
たポリマーのガラス転移点が一60℃〜−30℃の範囲
にあることが好ましい。In order for this polymer to have tackiness at room temperature, the glass transition temperature of the resulting polymer is preferably in the range of 160°C to -30°C.
次いでこのポリマーの水分散液のTI値カ2.5−rc
4)綜開Wすtス洋f徊鮎イフLスクリーン印刷性な付
与するにはTI値がこの範囲にあることが必要であり、
TI値が6〜5の範囲にあるのが特に好ましい。TI値
が2.5未満の場合にはスクリーン印刷に供した場合、
液の流動性は良好であるが、液切れ性が極度に悪く、い
つまでも液の垂れがあり作業性が悪い。一方5.5を越
える場合には、液切れ性は良好だが、スキージで液をし
ご℃・た場合、流動性が悪く(チキソトロピック性が大
きくなりすぎ)均一な膜厚が得られない。本発明におけ
る乳化重合によって得られるポリマーの水分散液のTI
値は粘度調差剤を使用しなくても所定の値が得られる場
合があるが、粘度調整剤を使用して調整するのが好まし
い。Then, the TI value of the aqueous dispersion of this polymer was 2.5-rc.
4) In order to provide screen printability, the TI value must be within this range,
Particularly preferred is a TI value in the range 6-5. If the TI value is less than 2.5, when subjected to screen printing,
The fluidity of the liquid is good, but the liquid drainage is extremely poor, and the liquid drips forever, resulting in poor workability. On the other hand, if it exceeds 5.5, the liquid drainability is good, but when the liquid is squeezed with a squeegee at °C, the fluidity is poor (the thixotropic property becomes too large), and a uniform film thickness cannot be obtained. TI of the aqueous dispersion of polymer obtained by emulsion polymerization in the present invention
Although a predetermined value may be obtained without using a viscosity modifier, it is preferable to adjust the value using a viscosity modifier.
本発明に使用される粘度調整剤としては、エマルジョン
の安定性を阻害させることなく、増粘効果を有する公知
の薬剤、例えばポリアクリル酸及びその塩類、ポリビニ
ルアルコール、カルボキシル化メチルセルローズなどの
セルローズ誘4体、HLB15以上のポリエチレングリ
コ−次脂肪屯エステルなどを単独又は適宜組み合わせる
ことによって本発明のTI値を得ることが出来るが、ポ
リアクリル酸及びその塩類などのそれ自身のTI値が6
以上の粘度調整剤と、ポリビニルアルコール、セルロー
ズ誘導体及びHLB15以上のポリエチレングリコール
脂肪酸エステルなどのそれ自身のTI値が2以下の粘度
調整剤の併用が特に好ましい。The viscosity modifier used in the present invention includes known agents that have a thickening effect without impairing emulsion stability, such as cellulose inducers such as polyacrylic acid and its salts, polyvinyl alcohol, and carboxylated methyl cellulose. The TI value of the present invention can be obtained by using polyethylene glyco-subfatty esters with an HLB of 15 or higher alone or in appropriate combinations, but when polyacrylic acid and its salts have a TI value of 6.
It is particularly preferred to use the above viscosity modifier in combination with a viscosity modifier that itself has a TI value of 2 or less, such as polyvinyl alcohol, cellulose derivatives, and polyethylene glycol fatty acid esters with an HLB of 15 or more.
に調整する必要がある。need to be adjusted.
その他必要に応じて、消泡剤、顔料、皮張り防止剤等を
添加することも出来る。In addition, antifoaming agents, pigments, anti-skinning agents, etc. can also be added as necessary.
また好ましい粘度については、塗布厚によって変わるが
乾燥後の厚みが15〜30μ程度なら、5000〜10
000cP程度である。粘度が3DOOcPよりも低い
場合は印刷時にはじきが発生しやす(、又100UDc
pよりも高い場合は流動性が悪くなりがちである。The preferred viscosity varies depending on the coating thickness, but if the thickness after drying is about 15 to 30 μm, the viscosity is 5000 to 10 μm.
It is about 000cP. If the viscosity is lower than 3DOOcP, flickering is likely to occur during printing (or 100UDc
If it is higher than p, the fluidity tends to be poor.
本発明の感圧接着剤を使用しスクリーン印刷塗工法にて
感圧接着剤を塗工した場合、
1)スクリーン印刷で自由なパターンで感圧接着剤を塗
工できるので、今迄のような両面粘着テープを銘板等の
裏に貼り付ける作業がな(なり作業性があがる。When the pressure-sensitive adhesive of the present invention is applied using the screen printing coating method, 1) Since the pressure-sensitive adhesive can be applied in a free pattern using screen printing, it is possible to apply the pressure-sensitive adhesive in a free pattern. There is no need to attach double-sided adhesive tape to the back of nameplates, etc., which improves work efficiency.
2)粘着力の調整が刷版のスクリーンメツシュの選定と
膜面の厚みで自由にできる。2) Adhesive strength can be freely adjusted by selecting the screen mesh of the printing plate and the thickness of the film surface.
5)アクリル系ゆえ、耐光、耐候性が良好である。5) Since it is acrylic, it has good light resistance and weather resistance.
4)本質的に溶剤等を含んでいない水性タイプゆえ、火
災、貴注の心配がな(安心して作業できる。4) Because it is a water-based type that essentially does not contain solvents, there is no need to worry about fire or damage (you can work with confidence).
5)感圧接着剤を塗工したものの打抜きは従来の両面粘
着テープを貼付たものに比べ打抜き機の刃への粘着剤の
付着が少ない。5) When punching items coated with pressure-sensitive adhesive, less adhesive adheres to the blade of the punching machine than when pasting conventional double-sided adhesive tape.
などのづ−ぐれた特長が期待でき、ポリカーボネート、
ポリエステルなどの各種プラスチック、紙、金属を基材
とし、銘板、ステッカ−、ラベルの製造に十分な性能を
発揮できる。You can expect excellent features such as polycarbonate,
Using various plastics such as polyester, paper, and metal as base materials, it can demonstrate sufficient performance for manufacturing nameplates, stickers, and labels.
以下、実施例を挙けて本発明をさらに具体的に説明J−
るが本発明はこれらに限定されるものではなく、この発
明の技術思想を逸脱しない範囲で種々の変形が可能であ
る。また、実施例中、部とあるのはM置部、%とあるの
はMR%を意味し、また粘着力および保持力、タックの
測定は次の方法で行なったものである。Hereinafter, the present invention will be explained in more detail with reference to Examples.
However, the present invention is not limited to these, and various modifications can be made without departing from the technical idea of the present invention. Furthermore, in the examples, parts mean M, and % means MR%, and the adhesive strength, holding power, and tack were measured by the following methods.
く粘着力〉
50μ厚ポリエステルフイルムに乾燥後の厚みが25μ
となるように感圧接着剤を直接塗布し、100℃×2分
乾燥し粘着フィルムをつくる。これニツイてJISZ−
0237に準じて180度引きはがし粘着力を測定した
。Adhesive strength> 50μ thick polyester film with a dry thickness of 25μ
Apply pressure sensitive adhesive directly to the surface and dry for 2 minutes at 100°C to create an adhesive film. This is awesome JISZ-
0237, the 180 degree peeling strength was measured.
く保持力〉
粘着力試験と同様っ粘着フィルムをつくり、ステンレス
板に25X、25m@貼り合わせ、40℃にて1ゆ荷重
をがけてはがれ落ちる迄の時間を測定した。Holding power> An adhesive film was made in the same manner as in the adhesive strength test, and was attached to a stainless steel plate at 25X and 25 m@1, and the time until it peeled off was measured at 40° C. by applying a 1-y load.
くタック〉
粘着力試験と同様の粘着フィルムをつくり、JISZ−
0237のJ −Daw法に準拠してボールタックを測
定した。傾斜板の角度30度。KuTack〉 Make an adhesive film similar to the adhesive strength test and JISZ-
Ball tack was measured according to the J-Daw method of 0237. The angle of the inclined plate is 30 degrees.
実施例1
攪拌機、温度計、冷却管、滴下ロートを装備した5I!
4日フラスコに水47.0部を仕込み、80℃に昇温し
た。続いてHA70部、13A50部、メタクリル酸(
以下rMAAJと称する)6,5部、N−メチロールア
クリルアミド(以下rN −MAM」と称する)o、3
部、ドデシルメルカプタン(以下「DM」と称する)0
.1部の混合物をポリオキシエチレンノニルフェニルエ
ーテル硫酸ソーダ8部、水21.5部で乳化し、5%の
過硫酸アンモニウム水溶液1部と共に4時間がかって連
続的に滴下重合した。この間重合温度を80±2℃に保
持し滴下終了後さらに1時間同温度に保持したンを得た
。Example 1 5I equipped with stirrer, thermometer, cooling tube, and dropping funnel!
On the 4th day, 47.0 parts of water was charged into the flask, and the temperature was raised to 80°C. Next, 70 parts of HA, 50 parts of 13A, methacrylic acid (
(hereinafter referred to as rMAAJ) 6.5 parts, N-methylol acrylamide (hereinafter referred to as rN-MAM) o, 3
Part, dodecyl mercaptan (hereinafter referred to as "DM") 0
.. One part of the mixture was emulsified with 8 parts of polyoxyethylene nonylphenyl ether sodium sulfate and 21.5 parts of water, and continuously dropwise polymerized with 1 part of a 5% ammonium persulfate aqueous solution over 4 hours. During this period, the polymerization temperature was maintained at 80±2° C., and after the completion of the dropwise addition, the temperature was maintained for an additional 1 hour.
このベースとなるポリマーエマルジョン100部をアン
モニア水でp H7,8Km製し、粘度調整剤として高
重合度ポリカルボン酸型エマルジョン(東亜合成化学工
業■商品名アロ/A S −7022(pH=2.5、
固型分65%))04部とHI、 B20のポリオキジ
エチレンジステアレー)(融点80℃)の5%水溶液0
.5部を添加し、pl−is、 8、固型分54.0%
、TI値3.6の感圧接着剤を得た。100 parts of this base polymer emulsion was prepared with aqueous ammonia to pH 7.8 km, and as a viscosity modifier, a highly polymerized polycarboxylic acid type emulsion (Toagosei Chemical Co., Ltd. trade name: Aro/AS-7022 (pH=2. 5,
Solid content 65%)
.. Added 5 parts, pl-is, 8, solids content 54.0%
, a pressure sensitive adhesive having a TI value of 3.6 was obtained.
この感圧接着剤を100メツシユのシルクスクリーンで
100μ厚のポリエステルフィルムに600回くり返し
塗布したが、液の流動性、液の垂れともに良好で均一な
パターンを得ることが出来た。This pressure-sensitive adhesive was coated 600 times on a 100 μm thick polyester film using a 100-mesh silk screen, and a uniform pattern with good fluidity and dripping could be obtained.
また別途、この感圧接着剤の粘着物性を測定した結果を
表1に記載した。Separately, the results of measuring the adhesive properties of this pressure-sensitive adhesive are shown in Table 1.
表1
実施例2
Bi60部、Bi12部、アクリル酸メチル(以下「M
Ajと称する)10部、MAA3部、N−MAMo、1
部、DMo、1部の組成で実施例1と同様の方法で乳化
重合し、pH2,1,粘度420cP。Table 1 Example 2 60 parts Bi, 12 parts Bi, methyl acrylate (hereinafter "M
Aj) 10 parts, MAA 3 parts, N-MAMo, 1
Emulsion polymerization was carried out in the same manner as in Example 1 with a composition of 1 part DMo and 1 part DMo, pH 2.1 and viscosity 420 cP.
固型分56.5%のベースとなるポリマーエマルジョン
を得た。このベースとなるポリマーエマルジョン100
部をアンモニア水でpHをZ2に調整し、粘度調整剤と
して高分子量ポリカルボン酸型エマルジョン(東亜合成
化学工業■商品名アロンAS−7050(pH=2.3
、固型分=65%))を20%に水で希釈したもの5.
0部、セルローズ系増粘剤(フジケミカル■商品名ヒド
ロキシエチルセルロースA−5000)の3%水溶液4
.0部を添加し、粘度8800cP、TI値42の感圧
接着剤を得た。この感圧接着剤で実施例1と同様に60
0回連続して塗布したが、作業性は良好であった。この
感圧接着剤の粘着物性は表2のとおりであった。A base polymer emulsion with a solids content of 56.5% was obtained. This base polymer emulsion 100
The pH was adjusted to Z2 with aqueous ammonia, and a high molecular weight polycarboxylic acid emulsion (Toagosei Chemical Industry Co., Ltd. trade name: Aron AS-7050 (pH = 2.3) was added as a viscosity modifier.
, solid content = 65%) diluted with water to 20%5.
0 parts, 3% aqueous solution of cellulose thickener (Fuji Chemical ■ trade name hydroxyethyl cellulose A-5000) 4
.. A pressure sensitive adhesive having a viscosity of 8800 cP and a TI value of 42 was obtained. With this pressure-sensitive adhesive, 60
Although the coating was applied 0 times in a row, the workability was good. The adhesive properties of this pressure sensitive adhesive were as shown in Table 2.
表2
実施例6
Bi75部、アクリル酸シクロヘキシル109、MA9
部、酢酸ビニ/L/6部、M A A 4部、N−MA
Mo、5部、DMD、08部の組成で実施例1と同様の
方法で乳化重合し、pH1,8、粘度180 cP、固
型分56%のベースとなるポリマーエマルジョンを得た
。このベースとなるポリマーエマルジョンに粘度調整剤
としてポリアクリル酸ソーダ(東亜合成化学工業■商品
名アロンA−2OL)1.3部、とポリビニルアルコー
ル(クラレ■商品名ポバール420)の5%水溶液0.
5部とを添加し、粘度4300cP、TI値4.8の感
圧性接着剤を得た。実施例1と同様に300回くり返し
スクリーン塗布した結果、スキージでしごいた場合の液
の流動性、液切れ性は共に良好であったが若干泡立ちが
発生した。但し、消泡剤を併用すると泡立ちもなく、極
めて良好なスクリーン印刷性を示した。Table 2 Example 6 Bi 75 parts, cyclohexyl acrylate 109, MA9
part, vinyl acetate/L/6 parts, M A A 4 parts, N-MA
Emulsion polymerization was carried out in the same manner as in Example 1 using a composition of 5 parts of Mo and 0.8 parts of DMD to obtain a base polymer emulsion having a pH of 1.8, a viscosity of 180 cP, and a solid content of 56%. This base polymer emulsion contains 1.3 parts of sodium polyacrylate (Toagosei Chemical Industry Co., Ltd., trade name: Aron A-2OL) as a viscosity modifier, and 0.0 parts of a 5% aqueous solution of polyvinyl alcohol (Kuraray, trade name: Poval 420).
A pressure sensitive adhesive having a viscosity of 4300 cP and a TI value of 4.8 was obtained. As a result of repeating screen coating 300 times in the same manner as in Example 1, the fluidity and drainability of the liquid when squeezed with a squeegee were both good, but some foaming occurred. However, when an antifoaming agent was used in combination, no foaming occurred and extremely good screen printability was exhibited.
このものの粘着物性を表6に示す。Table 6 shows the adhesive properties of this product.
表3
実施例4〜6、比較例1〜2
実施例1と同シベースポリマーエマルジョンを使用し、
実施例2と同じ粘度調製剤で種々のTI値のものを調整
した場合のスクリーン印刷塗工性を調べた結果を表4に
記載した。Table 3 Examples 4 to 6, Comparative Examples 1 to 2 Using the same Sibase polymer emulsion as in Example 1,
Table 4 shows the results of examining the screen printing applicability of various TI values prepared using the same viscosity modifier as in Example 2.
表4
第1頁の続き
0発 明 者 栗 原 正 雄 名古屋市港区船見町究
所内
■−1東亜合成化学工業株式会社研Table 4 Continued from page 1 0 Inventor Masao Kurihara Laboratory, Funami-cho, Minato-ku, Nagoya ■-1 Laboratory of Toagosei Chemical Industry Co., Ltd.
Claims (1)
テルを主体とする単量体混合物を水媒体中で重合してな
る室温で粘着性を有するポリマーの水分散液からなる水
分散型感圧接着剤であって、水分散型感圧接着剤のB型
粘度割による(ローターの回転速度6 r、p、m、で
測定した粘度)/(前記ローターと同一のローターの回
転速度60 r、p、m、で測定した粘度)で表わされ
るチキントロピックインデックスが2.5〜5.5の範
囲にあることを特徴とするスクリーン印刷塗工性の良い
水分散型感圧接着剤。1. A water-dispersed pressure-sensitive adhesive consisting of an aqueous dispersion of a polymer that is sticky at room temperature and is obtained by polymerizing a monomer mixture mainly composed of acrylic esters and/or methacrylic esters in an aqueous medium. According to the B-type viscosity ratio of the water-dispersed pressure-sensitive adhesive (viscosity measured at a rotor rotational speed of 6 r, p, m)/(rotational speed of the same rotor as the above rotor 60 r, p, m, A water-dispersible pressure-sensitive adhesive having good screen printing coatability, characterized in that the chicken tropic index expressed by the viscosity (viscosity measured in ) is in the range of 2.5 to 5.5.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13938283A JPH0249347B2 (en) | 1983-08-01 | 1983-08-01 | SUKURIININSATSUTOKOSEINOYOIMIZUBUNSANGATAKANATSUSETSUCHAKUZAI |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13938283A JPH0249347B2 (en) | 1983-08-01 | 1983-08-01 | SUKURIININSATSUTOKOSEINOYOIMIZUBUNSANGATAKANATSUSETSUCHAKUZAI |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6032869A true JPS6032869A (en) | 1985-02-20 |
JPH0249347B2 JPH0249347B2 (en) | 1990-10-29 |
Family
ID=15244010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13938283A Expired - Lifetime JPH0249347B2 (en) | 1983-08-01 | 1983-08-01 | SUKURIININSATSUTOKOSEINOYOIMIZUBUNSANGATAKANATSUSETSUCHAKUZAI |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0249347B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5141989A (en) * | 1989-12-21 | 1992-08-25 | Minnesota Mining And Manufacturing Company | Screen-printable acrylate pressure-sensitive adhesive composition |
WO1997005208A1 (en) * | 1995-07-28 | 1997-02-13 | Ligra B.V. | An aqueous adhesive which can be applied to a substrate by screen printing, a method for preparing same and the use of such an adhesive |
WO2013147085A1 (en) * | 2012-03-29 | 2013-10-03 | 日本合成化学工業株式会社 | Emulsion-type adhesive composition and adhesive sheet |
CN109679031A (en) * | 2014-05-13 | 2019-04-26 | 积水化学工业株式会社 | Light wet-cured type resin combination, electronic component-use bonding agent and display element bonding agent |
-
1983
- 1983-08-01 JP JP13938283A patent/JPH0249347B2/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5141989A (en) * | 1989-12-21 | 1992-08-25 | Minnesota Mining And Manufacturing Company | Screen-printable acrylate pressure-sensitive adhesive composition |
WO1997005208A1 (en) * | 1995-07-28 | 1997-02-13 | Ligra B.V. | An aqueous adhesive which can be applied to a substrate by screen printing, a method for preparing same and the use of such an adhesive |
WO2013147085A1 (en) * | 2012-03-29 | 2013-10-03 | 日本合成化学工業株式会社 | Emulsion-type adhesive composition and adhesive sheet |
CN109679031A (en) * | 2014-05-13 | 2019-04-26 | 积水化学工业株式会社 | Light wet-cured type resin combination, electronic component-use bonding agent and display element bonding agent |
Also Published As
Publication number | Publication date |
---|---|
JPH0249347B2 (en) | 1990-10-29 |
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