JPH06128543A - Production of water-dispersed acrylic pressure-sensitive adhesive, water-dispersed acrylic pressure-sensitive adhesive, and pressure-sensitive adhesive tape or sheet - Google Patents
Production of water-dispersed acrylic pressure-sensitive adhesive, water-dispersed acrylic pressure-sensitive adhesive, and pressure-sensitive adhesive tape or sheetInfo
- Publication number
- JPH06128543A JPH06128543A JP4278479A JP27847992A JPH06128543A JP H06128543 A JPH06128543 A JP H06128543A JP 4278479 A JP4278479 A JP 4278479A JP 27847992 A JP27847992 A JP 27847992A JP H06128543 A JPH06128543 A JP H06128543A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- sensitive adhesive
- water
- parts
- monomer
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1808—C8-(meth)acrylate, e.g. isooctyl (meth)acrylate or 2-ethylhexyl (meth)acrylate
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Adhesive Tapes (AREA)
- Polymerisation Methods In General (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、水分散型アクリル系
粘着剤の製造方法及び水分散型アクリル系粘着剤並びに
粘着テープもしくはシートに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a water-dispersed acrylic pressure-sensitive adhesive, a water-dispersed acrylic pressure-sensitive adhesive, and a pressure-sensitive adhesive tape or sheet.
【０００２】[0002]
【従来の技術】粘着テープもしくはシートは、一般に、
紙、不織布、合成樹脂フィルム、金属箔からなる基材
に、粘着剤を塗布し乾燥することにより製造される。2. Description of the Related Art Adhesive tapes or sheets are generally
It is manufactured by applying a pressure-sensitive adhesive to a base material made of paper, a non-woven fabric, a synthetic resin film, and a metal foil, and drying it.
【０００３】粘着剤としては、溶剤型や水分散型のアク
リル系粘着剤が使用されている。このうち、水分散型の
アクリル系粘着剤は有機溶剤を含まないので、衛生的で
大気汚染や火災の恐れもなく、省資源の観点からも利用
が増大している。Solvent-type or water-dispersion acrylic adhesives are used as the adhesives. Among them, the water-dispersible acrylic adhesive does not contain an organic solvent, and therefore is hygienic, has no fear of air pollution or fire, and has been increasingly used from the viewpoint of resource saving.
【０００４】従来、この種の水分散型アクリル系粘着剤
は、（メタ）アクリル酸アルキルエステルを主成分と
し、これと共重合可能な他のビニル系モノマーとの混合
モノマーを、乳化剤として界面活性剤を用い、水媒体中
で乳化重合して製造される。Conventionally, this type of water-dispersible acrylic pressure-sensitive adhesive contains a (meth) acrylic acid alkyl ester as a main component, and a mixed monomer with another vinyl-type monomer copolymerizable therewith as an emulsifier, which is used as a surface active agent. It is manufactured by emulsion polymerization in an aqueous medium using a chemical agent.
【０００５】（メタ）アクリル酸アルキルエステル成分
は、主に粘着力を付与するもので、例えば、ｎ−ブチル
アクリレート、２−エチルヘキシルアクリレート等が使
用される。また、他のビニル系モノマー成分は、主に凝
集力を付与するもので、例えば、（メタ）アクリル酸、
（メタ）アクリルアミド、２−ヒドロキシエチルアクリ
ート、酢酸ビニル等が使用される。The (meth) acrylic acid alkyl ester component mainly gives tackiness, and for example, n-butyl acrylate, 2-ethylhexyl acrylate and the like are used. Further, the other vinyl-based monomer component mainly imparts cohesive force, for example, (meth) acrylic acid,
(Meth) acrylamide, 2-hydroxyethyl acrylate, vinyl acetate and the like are used.
【０００６】この場合、乳化重合の際の乳化液を安定
（重合安定）化させ且つ水分散粘着剤を安定（機械安
定）化させ、低粘度で高固形分の水分散型粘着剤を得る
ために、乳化剤としてアニオン系界面活性剤とノニオン
系界面活性剤との混合界面活性剤を使用することが提案
されている（例えば、特開昭６３−２７５７２号公報参
照）。In this case, in order to stabilize the emulsion during emulsion polymerization (polymerization stability) and stabilize the water-dispersed pressure-sensitive adhesive (mechanical stability), to obtain a water-dispersed pressure-sensitive adhesive having a low viscosity and a high solid content. In addition, it has been proposed to use a mixed surfactant of an anionic surfactant and a nonionic surfactant as an emulsifier (for example, see JP-A-63-27572).
【０００７】[0007]
【発明が解決しようとする課題】ところが、上記従来方
法にあっては、混合界面活性剤を全モノマーに対して２
〜１５重量％と比較的多量に使用せねば、所期の効果が
充分に発揮されない。しかし、このように混合界面活性
剤を比較的多量に使用すると、粘着剤の耐水性が低下す
るという問題がある。However, in the above conventional method, the mixed surfactant is used in an amount of 2 relative to all the monomers.
If it is used in a relatively large amount of up to 15% by weight, the desired effect cannot be fully exhibited. However, when a relatively large amount of the mixed surfactant is used, there is a problem that the water resistance of the pressure-sensitive adhesive is lowered.
【０００８】この発明は、上記の問題を解決するもので
あり、その目的とするところは、重合安定性及び機械安
定性がよく、低粘度で高固形分のものを得ることがで
き、しかも耐水性を低下させることなく、接着性能に優
れた水分散型アクリル系粘着剤の製造方法及び水分散型
アクリル系粘着剤並びに粘着テープもしくはシートを提
供することにある。The present invention is intended to solve the above problems, and an object thereof is to obtain a polymer having good polymerization stability and mechanical stability, a low viscosity and a high solid content, and moreover, water resistance. It is intended to provide a method for producing a water-dispersed acrylic pressure-sensitive adhesive having excellent adhesiveness without deteriorating the property, a water-dispersed acrylic pressure-sensitive adhesive, and a pressure-sensitive adhesive tape or sheet.
【０００９】[0009]
【課題を解決するための手段】上記の目的を達成するた
め、この発明は、アルキル基の炭素数が４〜１４の（メ
タ）アクリル酸アルキルエステルを主成分とし、これと
共重合可能で酸性基を有するビニル系モノマーと塩基性
基を有するビニル系モノマーとの混合モノマーを、乳化
剤としてポリオキシエチレン鎖を有するアニオン系界面
活性剤と共重合性二重結合を有するノニオン系界面活性
剤とを併用し、水媒体中で乳化重合して、水分散型アク
リル系粘着剤を製造するものである。In order to achieve the above-mentioned object, the present invention comprises a (meth) acrylic acid alkyl ester having an alkyl group of 4 to 14 carbon atoms as a main component, which is copolymerizable with and acidic. A mixed monomer of a vinyl monomer having a group and a vinyl monomer having a basic group, an anionic surfactant having a polyoxyethylene chain as an emulsifier and a nonionic surfactant having a copolymerizable double bond. It is used together and is emulsion-polymerized in an aqueous medium to produce a water-dispersed acrylic pressure-sensitive adhesive.
【００１０】また、この発明は、上記の水分散型アクリ
ル系粘着剤を用いて粘着テープもしくはシートを製造す
るものである。Further, the present invention is to produce an adhesive tape or sheet using the above water-dispersible acrylic adhesive.
【００１１】この発明において、アルキル基の炭素数が
４〜１４の（メタ）アクリル酸エステルとしては、ｎ−
ブチルアクリレート、２−エチルヘキシルアクリレート
が好適である。In the present invention, the (meth) acrylic acid ester whose alkyl group has 4 to 14 carbon atoms is n-
Butyl acrylate and 2-ethylhexyl acrylate are preferred.
【００１２】なお、この発明において、（メタ）アクリ
ル及び（メタ）アクリレートと記載されているところ
は、全て、アクリルとメタクリルの両方及びアクリレー
トとメタクリレートの両方を意味する。In the present invention, all references to (meth) acryl and (meth) acrylate mean both acryl and methacryl and both acrylate and methacrylate.
【００１３】これ等の（メタ）アクリル酸アルキルエス
テルは、混合モノマー（全モノマー）に対して６０〜９
７重量％の範囲で用いるのが好ましい。この（メタ）ア
クリル酸エステルが少なくなると粘着剤の粘着力が低下
し、逆に多くなると粘着剤の凝集力が低下する。These (meth) acrylic acid alkyl esters are used in an amount of 60 to 9 relative to the mixed monomer (total monomer).
It is preferably used in the range of 7% by weight. When the amount of this (meth) acrylic acid ester decreases, the adhesive force of the pressure-sensitive adhesive decreases, and when it increases, the cohesive force of the pressure-sensitive adhesive decreases.
【００１４】また、共重合可能で酸性基を有するビニル
系モノマーとしては、（メタ）アクリル酸、イタコン
酸、マレイン酸、無水マレイン酸の一種又は二種以上の
モノマーが好適である。As the vinyl monomer which is copolymerizable and has an acidic group, one or more monomers of (meth) acrylic acid, itaconic acid, maleic acid and maleic anhydride are preferable.
【００１５】これ等の酸性基を有するビニル系モノマー
は、混合モノマーに対して０．５〜５重量％の範囲で用
いるのが好ましい。このビニル系モノマーが少なくなる
と水分散粘着剤の安定性（機械安定性）が低下し、逆に
多くなると乳化重合の際の乳化液の安定性（重合安定
性）が低下する。It is preferable to use these vinyl monomers having an acidic group in the range of 0.5 to 5% by weight based on the mixed monomer. When the amount of the vinyl-based monomer decreases, the stability (mechanical stability) of the water-dispersed pressure-sensitive adhesive decreases, and when the amount of the vinyl-based monomer increases, the stability of the emulsion (polymerization stability) decreases during emulsion polymerization.
【００１６】また、共重合可能で塩基性基を有するビニ
ル系モノマーとしては、（メタ）アクリルアミド、ジメ
チルアクリルアミド、イソプロピルアクリルアミド、Ｎ
−ブトキシメチルアクリルアミド、ジメチルアミノプロ
ピルアクリルアミド、ジメチルアミノエチルメタクリレ
ート、Ｎ−ビニルピロリドン、Ｎ−ビニルカプロラクタ
ム、アクリロイルモルホリンなどの一種又は二種以上の
モノマーが好適である。Further, as the vinyl-based monomer which is copolymerizable and has a basic group, (meth) acrylamide, dimethylacrylamide, isopropylacrylamide, N
One or more monomers such as -butoxymethylacrylamide, dimethylaminopropylacrylamide, dimethylaminoethylmethacrylate, N-vinylpyrrolidone, N-vinylcaprolactam, acryloylmorpholine are preferred.
【００１７】これ等の塩基性基を有するビニル系モノマ
ーは、混合モノマーに対して０．５〜５重量％の範囲で
用いるのが好ましい。このビニル系モノマーが少なくな
ると粘着剤の接着性能が低下し、逆に多くなると水分散
粘着剤の機械安定性が低下する。The vinyl-based monomer having a basic group is preferably used in the range of 0.5 to 5% by weight based on the mixed monomer. If this vinyl-based monomer is reduced, the adhesive performance of the pressure-sensitive adhesive will be reduced, and conversely, if it is increased, the mechanical stability of the water-dispersed pressure-sensitive adhesive will be reduced.
【００１８】なお、これ等のビニル系モノマーには、必
要に応じてその他の共重合可能なビニル系モノマーを併
用してもよい。このようなビニル系モノマーとしては、
酢酸ビニル、アクリロニトリル、スチレン、（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２−ヒドロキシエチル等のモノマーが用いら
れる。If desired, these vinyl monomers may be used in combination with other copolymerizable vinyl monomers. As such a vinyl-based monomer,
Vinyl acetate, acrylonitrile, styrene, methyl (meth) acrylate, ethyl (meth) acrylate, (meth)
A monomer such as 2-hydroxyethyl acrylate is used.
【００１９】このようなビニル系モノマーを併用する場
合は、混合モノマーに対して３０重量％以下の範囲で用
いる。このビニル系モノマーが多くなると粘着剤が硬く
なり、粘着力が低下する。When such a vinyl-based monomer is used in combination, it is used in an amount of 30% by weight or less based on the mixed monomer. When the amount of this vinyl-based monomer is large, the pressure-sensitive adhesive becomes hard and the adhesive strength is reduced.
【００２０】さらに、粘着剤の耐クリープ性を向上させ
るために、ジビニルベンゼン、エチレングリコールジメ
タクリレート、トリメチロールプロパントリメタクリレ
ート等の分子中に２個以上の共重合性二重結合を有する
架橋反応性の多官能モノマーを併用してもよい。Further, in order to improve the creep resistance of the pressure-sensitive adhesive, a cross-linking reactivity having two or more copolymerizable double bonds in the molecule such as divinylbenzene, ethylene glycol dimethacrylate, trimethylolpropane trimethacrylate and the like. You may use together the polyfunctional monomer of.
【００２１】このような多官能モノマーを併用する場合
は、混合モノマーに対して１重量％以下の範囲で用い
る。この多官能モノマーが多くなると架橋密度が高くな
り、剥離強度が低下する。When such a polyfunctional monomer is used in combination, it is used in an amount of 1% by weight or less based on the mixed monomer. If the amount of this polyfunctional monomer increases, the crosslink density will increase and the peel strength will decrease.
【００２２】この発明においては、上記のような混合モ
ノマーを、乳化剤としてポリオキシエチレン鎖を有する
アニオン系界面活性剤と共重合性二重結合を有するノニ
オン系界面活性剤との混合界面活性剤を用い、水媒体中
で乳化重合する。In the present invention, the mixed monomer as described above is mixed with an anionic surfactant having a polyoxyethylene chain as an emulsifier and a nonionic surfactant having a copolymerizable double bond. Emulsion polymerization in an aqueous medium.
【００２３】ポリオキシエチレン鎖を有するアニオン系
界面活性剤としては、ポリオキシエチレンアルキルエー
テルスルホン酸塩、ポリオキシエチレンアルキルエーテ
ル硫酸塩、ポリオキシエチレンアルキルフェニルエーテ
ル硫酸塩等が好適である。As the anionic surfactant having a polyoxyethylene chain, polyoxyethylene alkyl ether sulfonate, polyoxyethylene alkyl ether sulfate, polyoxyethylene alkyl phenyl ether sulfate and the like are preferable.
【００２４】なお、上記のアニオン系界面活性剤は、メ
タクリロイル基、プロペニル基、アリル基等を付加した
共重合性二重結合を有するものであってもよいが、ドデ
シルベンゼンスルホン酸ソーダやラウリル硫酸ソーダの
ように、ポリオキシエチレン鎖を持たないアニオン系界
面活性剤を用いると、重合安定性が低下する。The above-mentioned anionic surfactant may have a copolymerizable double bond to which a methacryloyl group, a propenyl group, an allyl group or the like is added, but sodium dodecylbenzenesulfonate and lauryl sulfate are also usable. If an anionic surfactant having no polyoxyethylene chain, such as soda, is used, the polymerization stability decreases.
【００２５】また、共重合性二重結合を有するノニオン
系界面活性剤としては、メタクリロイル基、プロペニル
基、アリル基等を付加したポリオキシエチレンアルキル
エーテル、ポリオキシエチレンアルキルフェニルエーテ
ル、ポリオキシエチレンノニルフェニルエーテル等のポ
リオキシエチレン鎖を有するものが好適である。Further, as the nonionic surfactant having a copolymerizable double bond, polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, polyoxyethylene nonyl having methacryloyl group, propenyl group, allyl group and the like added thereto. Those having a polyoxyethylene chain such as phenyl ether are preferable.
【００２６】このようなアニオン系界面活性剤とノニオ
ン系界面活性剤の混合界面活性剤は、混合モノマー（全
モノマー）１００重量部に対して０．５〜２．０重量部
の範囲で使用するのが好ましい。界面活性剤が少なくな
ると乳化剤としての働きが充分でなく、逆に多くなると
粘着剤の耐水性が低下する。The mixed surfactant of the anionic surfactant and the nonionic surfactant is used in the range of 0.5 to 2.0 parts by weight with respect to 100 parts by weight of the mixed monomer (total monomer). Is preferred. When the amount of the surfactant is small, the function as an emulsifier is insufficient, and when the amount is large, the water resistance of the pressure-sensitive adhesive decreases.
【００２７】この場合、アニオン系界面活性剤は、混合
モノマー１００重量部に対して０．４〜１．０重量部、
好ましくは０．５〜０．８重量部の範囲で用いられる。
また、ノニオン系界面活性剤は、混合モノマー１００重
量部に対して０．２〜１．５重量部、好ましくは０．２
〜１．０重量部の範囲で用いられる。In this case, the anionic surfactant is 0.4 to 1.0 part by weight based on 100 parts by weight of the mixed monomer,
It is preferably used in the range of 0.5 to 0.8 parts by weight.
The nonionic surfactant is 0.2 to 1.5 parts by weight, preferably 0.2 to 100 parts by weight of the mixed monomer.
It is used in the range of up to 1.0 part by weight.
【００２８】アニオン系界面活性剤とノニオン系界面活
性剤との混合界面活性剤を使用する際には、両者を一括
してモノマーや水に加えて使用してもよく、両者を別々
にモノマーや水に加えて使用してもよい。いずれにして
も、乳化重合の際にアニオン系界面活性剤とノニオン系
界面活性剤とが混合されていればよい。When a mixed surfactant of an anionic surfactant and a nonionic surfactant is used, both of them may be added together to the monomer or water, and both may be used separately. You may use it in addition to water. In any case, the anionic surfactant and the nonionic surfactant may be mixed during the emulsion polymerization.
【００２９】乳化重合には、通常の水溶性の重合開始剤
が用いられる。このような重合開始剤としては、過硫酸
カリウム、過硫酸アンモニウム等の過硫酸塩、アゾビス
シアノバレリアン酸等の水溶性アゾ化合物、過酸化水素
と硫酸第１鉄等の還元剤を組み合わせたレドックス系開
始剤等が挙げられる。For emulsion polymerization, a usual water-soluble polymerization initiator is used. Examples of such a polymerization initiator include persulfates such as potassium persulfate and ammonium persulfate, water-soluble azo compounds such as azobis cyanovaleric acid, and redox compounds obtained by combining hydrogen peroxide and a reducing agent such as ferrous sulfate. An initiator etc. are mentioned.
【００３０】このような重合開始剤は、混合モノマー１
００重量部に対して、一般に０．０１〜１．０重量部、
好ましくは０．０３〜０．５重量部の範囲で用いられ
る。Such a polymerization initiator is used as the mixed monomer 1
Generally, 0.01 to 1.0 parts by weight, relative to 00 parts by weight,
It is preferably used in the range of 0.03 to 0.5 part by weight.
【００３１】乳化重合は、常法により、通常、５０〜９
０℃で１〜１０時間かけて攪拌下で行われる。この場
合、共重合体の分子量を調節するために、ドデシルメル
カプタン等の連鎖移動剤を使用してもよい。Emulsion polymerization is usually carried out by a conventional method at 50-9.
It is carried out under stirring at 0 ° C. for 1 to 10 hours. In this case, a chain transfer agent such as dodecyl mercaptan may be used to control the molecular weight of the copolymer.
【００３２】特に、乳化重合は、所謂モノマー後添加法
が好ましく、その中でも、あらかじめモノマーを界面活
性剤で乳化して添加するエマルジョン添加方式がさらに
好ましい。具体的には、混合モノマー１００重量部と混
合界面活性剤０．５〜２．０重量部と水２５〜４０重量
部との乳化液を、重合開始剤を含有する水中に逐次添加
して乳化重合する方法が好適に採用される。In particular, the so-called monomer post-addition method is preferable for the emulsion polymerization, and among them, the emulsion addition method in which the monomer is previously emulsified with a surfactant and added is more preferable. Specifically, an emulsion containing 100 parts by weight of the mixed monomer, 0.5 to 2.0 parts by weight of the mixed surfactant and 25 to 40 parts by weight of water is sequentially added to water containing a polymerization initiator to emulsify. A method of polymerizing is preferably adopted.
【００３３】このようにして得られる水分散型アクリル
系粘着剤は、そのままでも使用できる。また、耐クリー
プ性を向上させるために、アジリジン系、エポキシ系、
ブロックイソシアネート系などの架橋剤を添加して使用
することができる。The water-dispersible acrylic pressure-sensitive adhesive thus obtained can be used as it is. In addition, in order to improve creep resistance, aziridine type, epoxy type,
A cross-linking agent such as a blocked isocyanate type can be added and used.
【００３４】また、接着性を向上させるために、粘着付
与剤やエチレンー酢酸ビニル共重合体などの水性分散体
を添加して使用することができる。なお、これ等の水性
分散体は、混合モノマーに添加しておいて、乳化重合を
行うようにしてもよい。Further, in order to improve the adhesiveness, a tackifier or an aqueous dispersion such as an ethylene-vinyl acetate copolymer can be added and used. In addition, these aqueous dispersions may be added to the mixed monomer and emulsion polymerization may be performed.
【００３５】水分散型アクリル系粘着剤には、その他、
ＰＨ調整剤、粘度調整剤、乳化剤、保護コロイド、消泡
剤、防腐剤、顔料などを添加してもよい。Other water-dispersible acrylic adhesives include
A pH adjusting agent, a viscosity adjusting agent, an emulsifying agent, a protective colloid, an antifoaming agent, a preservative, a pigment and the like may be added.
【００３６】この水分散型アクリル系粘着剤は、主に、
粘着テープもしくはシートの製造に使用される。すなわ
ち、粘着テープもしくはシートは、紙、不織布、ポリエ
ステルやポリプロピレンなどの合成樹脂フィルム、金属
箔等からなる基材の少なくとも一面に、上記の水分散型
アクリル系粘着剤を塗布し乾燥することにより製造され
る。The water-dispersible acrylic pressure-sensitive adhesive is mainly composed of
Used in the production of adhesive tapes or sheets. That is, a pressure-sensitive adhesive tape or sheet is produced by coating the above water-dispersible acrylic pressure-sensitive adhesive on at least one surface of a substrate made of paper, nonwoven fabric, synthetic resin film such as polyester or polypropylene, metal foil, etc., and drying. To be done.
【００３７】また、粘着テープもしくはシートは、離型
処理したフィルムの一面に、上記の水分散型アクリル系
粘着剤を塗布し乾燥することにより粘着剤層を形成し、
この粘着剤層を、紙、不織布、ポリエステルやポリプロ
ピレンなどの合成樹脂フィルム、金属箔等からなる基材
の少なくとも一面に、転写することにより製造すること
もできる。The pressure-sensitive adhesive tape or sheet is coated with the above water-dispersible acrylic pressure-sensitive adhesive on one surface of the release-treated film and dried to form a pressure-sensitive adhesive layer,
It can also be produced by transferring this pressure-sensitive adhesive layer onto at least one surface of a substrate made of paper, non-woven fabric, synthetic resin film such as polyester or polypropylene, metal foil or the like.
【００３８】[0038]
【作用】（メタ）アクリル酸アルキルエステル成分は、
主に粘着力を付与する。そして、これにアクリル酸等の
酸性基を有するビニル系モノマーと、アクリルアミド等
の塩基性基を有するビニル系モノマーとを組み合わせて
共重合させると、主に凝集力が付与され、バランスの優
れた接着性能が得られる。[Function] The (meth) acrylic acid alkyl ester component is
It mainly gives adhesive strength. When a vinyl-based monomer having an acidic group such as acrylic acid and a vinyl-based monomer having a basic group such as acrylamide are combined and copolymerized with this, cohesive force is mainly imparted and excellent adhesion is achieved. Performance is obtained.
【００３９】その理由は、一方の共重合体分子における
酸性基のマイナス分極部分と、他方の共重合体分子にお
ける塩基性基のプラス分極部分とのイオン的結合作用が
強く働き、剥離やクリープに対して良好な凝集力が発現
し、接着性能が向上するものと推察される。The reason is that the negatively polarized portion of the acidic group in one copolymer molecule and the positively polarized portion of the basic group in the other copolymer molecule act strongly to cause peeling or creep. On the other hand, it is presumed that good cohesive force is developed and the adhesive performance is improved.
【００４０】また、共重合体の粒子間にも、上記のイオ
ン的結合作用が働いて合着しやすくなると考えられる
が、混合界面活性剤のうち、主にノニオン系界面活性剤
が保護コロイドとなってこのイオン的結合作用を阻止
し、粒子の合着を防止して共重合体の粒子を安定化させ
る。なお、アニオン系界面活性剤は、主にモノマーの乳
化液の粒子を安定化させる。Although it is considered that the above ionic bonding action also works between the particles of the copolymer to facilitate the coalescence, among the mixed surfactants, mainly nonionic surfactants serve as protective colloids. Thus, this ionic binding action is blocked, the coalescence of particles is prevented, and the particles of the copolymer are stabilized. The anionic surfactant mainly stabilizes the particles of the emulsion of the monomer.
【００４１】この場合、ノニオン系界面活性剤は共重合
性二重結合を有するので、このノニオン系界面活性剤は
乳化重合の際にモノマーとともに共重合される。それゆ
え、共重合性二重結合を有するノニオン系界面活性剤は
粒子から分離されず、全体として、より少ない量の界面
活性剤で充分な合着防止の作用をなすものと推察され
る。In this case, since the nonionic surfactant has a copolymerizable double bond, this nonionic surfactant is copolymerized with the monomer during emulsion polymerization. Therefore, the nonionic surfactant having a copolymerizable double bond is not separated from the particles, and it is presumed that a smaller amount of the surfactant as a whole exerts a sufficient action of preventing coalescence.
【００４２】このように、界面活性剤の量を少なくする
ことにより、生成する粒子の粒度が過度に細かくなるこ
とが防止されて粘度の増大が防止され、しかも耐水性の
低下も防止されるものと推察される。As described above, by reducing the amount of the surfactant, it is possible to prevent the particle size of the produced particles from becoming excessively fine, to prevent an increase in viscosity, and also to prevent a decrease in water resistance. It is presumed that.
【００４３】[0043]
【実施例】以下、この発明の実施例及び比較例を挙げて
具体的に説明する。実施例１ 温度計、攪拌機、還流冷却管及び窒素導入管を備えた反
応器内に、過硫酸アンモニウム０．１重量部を溶解した
イオン交換水５０重量部を投入し、窒素雰囲気下で７０
℃に加温した。EXAMPLES The present invention will be specifically described below with reference to Examples and Comparative Examples. Example 1 50 parts by weight of ion-exchanged water in which 0.1 part by weight of ammonium persulfate was dissolved was placed in a reactor equipped with a thermometer, a stirrer, a reflux condenser and a nitrogen inlet tube, and the mixture was heated to 70 in a nitrogen atmosphere.
Warmed to ° C.
【００４４】モノマー組成として、２−エチルヘキシル
アクリレート２０重量部、ｎ−ブチルアクリレート７４
重量部、メタクリル酸３重量部、Ｎ−ビニルピロリドン
３重量部を用いた。As the monomer composition, 20 parts by weight of 2-ethylhexyl acrylate and 74 n-butyl acrylate are used.
Parts by weight, 3 parts by weight of methacrylic acid and 3 parts by weight of N-vinylpyrrolidone were used.
【００４５】また、アニオン系界面活性剤として、ポリ
オキシエチレンアルキルエーテルスルホン酸アンモニウ
ム（ハイテノールＮ−０８：第一工業製薬社製）０．６
重量部を用い、ノニオン系界面活性剤として、プロペニ
ル基付加ポリオキシエチレンノニルフェニルエーテル
（Ａ）（酸化エチレン付加モル数２０）（アクアロンＲ
Ｎ−２０：第一工業製薬社製）０．３重量部を用いた。As an anionic surfactant, ammonium polyoxyethylene alkyl ether sulfonate (Hitenol N-08: manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) 0.6
By weight, as a nonionic surfactant, a propenyl group-added polyoxyethylene nonylphenyl ether (A) (ethylene oxide addition mole number 20) (Aqualon R
N-20: manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) 0.3 part by weight was used.
【００４６】上記のモノマー組成１００重量部、アニオ
ン系界面活性剤０．６重量部、ノニオン系界面活性剤
０．３重量部、ｎ−ドデシルメルカプタン０．０６重量
部、イオン交換水３０重量部を、混合攪拌して乳化モノ
マーを調製し、滴下漏斗に仕込んだ。100 parts by weight of the above monomer composition, 0.6 part by weight of anionic surfactant, 0.3 part by weight of nonionic surfactant, 0.06 part by weight of n-dodecyl mercaptan and 30 parts by weight of deionized water. , The mixture was stirred to prepare an emulsified monomer, and the mixture was placed in a dropping funnel.
【００４７】この乳化モノマーを、前記の過硫酸アンモ
ニウムを溶解したイオン交換水５０重量部に３時間かけ
て滴下し乳化重合を行った。乳化重合中は、反応器内の
温度を７０℃に保持した。This emulsion monomer was added dropwise to 50 parts by weight of ion-exchanged water in which the ammonium persulfate was dissolved, over 3 hours to carry out emulsion polymerization. The temperature in the reactor was maintained at 70 ° C. during the emulsion polymerization.
【００４８】その後、滴下漏斗をイオン交換水１重量部
で洗浄して滴下し、７０℃で１時間保持して乳化重合を
行い、その後９０℃に昇温して１時間保持熟成した。重
合転化率は９９％以上であった。Thereafter, the dropping funnel was washed with 1 part by weight of ion-exchanged water and added dropwise, and the mixture was kept at 70 ° C. for 1 hour to carry out emulsion polymerization. Thereafter, the temperature was raised to 90 ° C. and the mixture was kept and aged for 1 hour. The polymerization conversion rate was 99% or more.
【００４９】乳化重合液を３０℃以下に冷却し、これを
２５重量％のアンモニア水で中和した。これに、ウレタ
ン系増粘剤（アデカノールＵＨ−４２０：旭電化社製）
０．４重量部を混合攪拌した後濾過して、水分散型アク
リル系粘着剤を製造した。The emulsion polymerization liquid was cooled to 30 ° C. or lower and neutralized with 25% by weight aqueous ammonia. In addition to this, a urethane-based thickener (Adecanol UH-420: manufactured by Asahi Denka Co., Ltd.)
0.4 parts by weight was mixed and stirred and then filtered to produce a water-dispersed acrylic pressure-sensitive adhesive.
【００５０】この粘着剤のＰＨは７．５、固形分は５
５．８重量％、粘度は７５００ｃｐｓであった。また、
重合安定性及び機械安定性を評価したところ、重合安定
性は０．０１重量％以下、機械安定性は０．０１重量％
であった。This adhesive has a PH of 7.5 and a solid content of 5
The weight was 5.8 wt% and the viscosity was 7,500 cps. Also,
When the polymerization stability and the mechanical stability were evaluated, the polymerization stability was 0.01% by weight or less, and the mechanical stability was 0.01% by weight.
Met.
【００５１】なお、重合安定性は、乳化重合後中和し増
粘剤を混合した分散液を、２００メッシュのステンレス
製金網で濾過し、金網上に残された粗粒を全固形分に対
する割合（重量％）で示した。The polymerization stability is determined by filtering the dispersion, which is neutralized after emulsion polymerization and mixed with a thickener, with a 200-mesh stainless steel wire net, and the coarse particles left on the wire net are in proportion to the total solid content. (% By weight).
【００５２】機械安定性は、マーロン型機械安定性試験
機により、乳化重合後中和し増粘剤を混合した分散液５
０ｇを、１０ kｇ／cm2 の圧力下で１０００ｒｐｍで５
分間回転させ、試験容器内に凝集した粗粒を全固形分に
対する割合（重量％）で示した。With respect to the mechanical stability, a dispersion liquid 5 prepared by emulsion polymerization and neutralized with a thickener was mixed with a Marlon type mechanical stability tester.
5 g at 1000 rpm under a pressure of 10 kg / cm 2.
After rotating for a minute, the coarse particles aggregated in the test container were shown as a ratio (% by weight) to the total solid content.
【００５３】さらに、上記の水分散型アクリル系粘着剤
を、離型処理したポリエステルフィルム（ＰＥＴ）の一
面に、糊厚が６０μm となるように塗布し乾燥し、これ
を坪量１４ｇ／ｍ2 のセルロース系不織布の両面に転写
して、両面粘着テープ（無架橋）を作成した。Further, the above water-dispersible acrylic pressure-sensitive adhesive was applied onto one surface of a release-treated polyester film (PET) so that the adhesive thickness would be 60 μm and dried, and the basis weight was 14 g / m 2 The double-sided pressure-sensitive adhesive tape (non-crosslinked) was prepared by transferring to both sides of the cellulosic non-woven fabric.
【００５４】また、上記の水分散型アクリル系粘着剤
に、アジリジン化合物からなる架橋剤（ＤＺ−２２Ｅ：
日本触媒社製）を、粘着剤層のゲル分率が約６０重量％
となるように添加し、上記と同様にして両面粘着テープ
（架橋）を作成した。なお、粘着剤層のゲル分率は、テ
トラヒドロフランに溶解させた時の不溶解分を重量％で
表す。In addition to the above water-dispersible acrylic pressure-sensitive adhesive, a cross-linking agent (DZ-22E:
The gel fraction of the adhesive layer is about 60% by weight.
And a double-sided adhesive tape (crosslinked) was prepared in the same manner as above. In addition, the gel fraction of the pressure-sensitive adhesive layer is represented by weight% of the insoluble matter when dissolved in tetrahydrofuran.
【００５５】上記の無架橋及び架橋の両面粘着テープに
ついて、ＪＩＳ Ｚ １５２８に準拠して、ステンレス
板及びポリプロピレン板に対する粘着力（ｇ／２０mm
幅）（１８０°剥離、２０℃×６５％ＲＨ）を測定し
た。Regarding the above-mentioned non-crosslinked and crosslinked double-sided adhesive tape, the adhesive strength (g / 20 mm) to a stainless steel plate and a polypropylene plate was measured according to JIS Z 1528.
Width) (180 ° peeling, 20 ° C x 65% RH) was measured.
【００５６】また、上記の無架橋及び架橋の両面粘着テ
ープについて、ＪＩＳ Ｚ １５２８に準拠して、保持
力（ずれ長さmm）（貼付け面積２０mm×２０mm、１ kｇ
荷重×１時間、４０℃×６５％ＲＨ及び４０℃×９０％
ＲＨ）を測定した。特に、この９０％ＲＨの測定条件で
耐水性を評価することができる。Regarding the above-mentioned non-crosslinked and crosslinked double-sided pressure-sensitive adhesive tapes, according to JIS Z 1528, holding power (deviation length mm) (pasting area 20 mm × 20 mm, 1 kg
Load x 1 hour, 40 ° C x 65% RH and 40 ° C x 90%
RH) was measured. In particular, water resistance can be evaluated under the measurement conditions of 90% RH.
【００５７】なお、保持力の測定で、１時間以内に落下
したものは、表には時間（分）及び落とを記入してい
る。また、全くずれが無いものは、ずれ無と記入してい
る。以上の結果を、乳化重合組成とともに、まとめて表
１に示す。When the holding force was measured and the product dropped within 1 hour, the time (minute) and drop were entered in the table. Also, if there is no deviation, it is entered as no deviation. The above results are collectively shown in Table 1 together with the emulsion polymerization composition.
【００５８】実施例２ 実施例１において、モノマー組成を、２−エチルヘキシ
ルアクリレート５０重量部、ｎ−ブチルアクリレート４
７重量部、メタクリル酸１重量部、Ｎ−ビニルカプロラ
クタム２重量部に変更した。また、アニオン系界面活性
剤を、ポリオキシエチレンアルキルフェニルエーテル硫
酸アンモニウム（エレミノールＥＳ−２０：三洋化成社
製）０．４重量部に変更した。また、ノニオン系界面活
性剤を、プロペニル基付加ポリオキシエチレンノニルフ
ェニルエーテル（Ｂ）（酸化エチレン付加モル数４０）
（アクアロンＲＮ−４０：第一工業製薬社製）０．８重
量部に変更した。また、ｎ−ドデシルメルカプタン０．
０３重量部に変更した。それ以外は実施例１と同様に行
った。その結果を、乳化重合組成とともに、まとめて表
１に示す。 Example 2 In Example 1, the monomer composition was changed to 50 parts by weight of 2-ethylhexyl acrylate and 4 parts of n-butyl acrylate.
7 parts by weight, 1 part by weight of methacrylic acid, and 2 parts by weight of N-vinylcaprolactam. Further, the anionic surfactant was changed to 0.4 parts by weight of polyoxyethylene alkylphenyl ether ammonium sulfate (Eleminol ES-20: manufactured by Sanyo Kasei Co., Ltd.). In addition, a nonionic surfactant is used as a propenyl group-added polyoxyethylene nonylphenyl ether (B) (ethylene oxide addition mole number 40).
(Aqualon RN-40: manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) The content was changed to 0.8 part by weight. Also, n-dodecyl mercaptan 0.
It was changed to 03 parts by weight. Other than that was performed like Example 1. The results are collectively shown in Table 1 together with the emulsion polymerization composition.
【００５９】実施例３ 実施例１において、モノマー組成を、２−エチルヘキシ
ルメタクリレート２０重量部、ｎ−ブチルアクリレート
７５重量部、メタクリル酸４．５重量部、ジメチルアミ
ノエチルメタクリレート０．５重量部に変更した。ま
た、アニオン系界面活性剤を、アリル基付加ポリオキシ
エチレンノニルフェニルエーテル硫酸アンモニウム（酸
化エチレン付加モル数１０）（アデカリアソープＳＥ−
１０Ｎ：旭電化社製）０．６重量部に変更した。また、
ノニオン系界面活性剤を、アリル基付加ポリオキシエチ
レンノニルフェニルエーテル（酸化エチレン付加モル数
１０）（アデカリアソープＮＥ−１０：旭電化社製）
０．８重量部に変更した。また、ｎ−ドデシルメルカプ
タン０．０５重量部に変更した。それ以外は実施例１と
同様に行った。その結果を、乳化重合組成とともに、ま
とめて表１に示す。 Example 3 In Example 1, the monomer composition was changed to 20 parts by weight of 2-ethylhexyl methacrylate, 75 parts by weight of n-butyl acrylate, 4.5 parts by weight of methacrylic acid, and 0.5 parts by weight of dimethylaminoethyl methacrylate. did. Further, an anionic surfactant is used as an allyl group-added polyoxyethylene nonylphenyl ether ammonium sulfate (ethylene oxide addition mole number 10) (ADEKA REASOAP SE-
10N: manufactured by Asahi Denka Co., Ltd.) 0.6 parts by weight. Also,
The nonionic surfactant is an allyl group-added polyoxyethylene nonylphenyl ether (ethylene oxide addition mole number 10) (ADEKA REASOAP NE-10: manufactured by Asahi Denka Co., Ltd.).
It was changed to 0.8 parts by weight. Further, the amount was changed to 0.05 part by weight of n-dodecyl mercaptan. Other than that was performed like Example 1. The results are collectively shown in Table 1 together with the emulsion polymerization composition.
【００６０】実施例４ 実施例１において、モノマー組成を、２−エチルヘキシ
ルアクリレート４７重量部、２−エチルヘキシルメタク
リレート４重量部、ｎ−ブチルアクリレート３６重量
部、メタクリル酸２．５重量部、メタクリルアミド０．
５重量部に変更し、これに水添ロジン系粘着付与剤（フ
ォーラル１０５：理化ハーキュレス社製）１０重量部を
溶解した。また、ｎ−ドデシルメルカプタン０．０３重
量部に変更した。それ以外は実施例１と同様に行った。
その結果を、乳化重合組成とともに、まとめて表１に示
す。 Example 4 In Example 1, the monomer composition was changed to 47 parts by weight of 2-ethylhexyl acrylate, 4 parts by weight of 2-ethylhexyl methacrylate, 36 parts by weight of n-butyl acrylate, 2.5 parts by weight of methacrylic acid and 0 of methacrylamide. ．
The amount was changed to 5 parts by weight, and 10 parts by weight of a hydrogenated rosin-based tackifier (Foral 105: manufactured by Rika Hercules Co., Ltd.) was dissolved therein. Further, the content was changed to 0.03 part by weight of n-dodecyl mercaptan. Other than that was performed like Example 1.
The results are collectively shown in Table 1 together with the emulsion polymerization composition.
【００６１】比較例１ 実施例１において、アニオン系界面活性剤を、ラウリル
硫酸ソーダ０．６重量部に変更した。また、ノニオン系
界面活性剤を、ポリオキシエチレンアルキルフェニルエ
ーテル（ノイゲンＥＡ−１４０：第一工業製薬社製）
０．８重量部に変更した。それ以外は実施例１と同様に
行った。その結果を、乳化重合組成とともに、まとめて
表２に示す。 Comparative Example 1 In Example 1, the anionic surfactant was changed to 0.6 part by weight of sodium lauryl sulfate. In addition, a nonionic surfactant is a polyoxyethylene alkylphenyl ether (Neugen EA-140: manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.).
It was changed to 0.8 parts by weight. Other than that was performed like Example 1. The results are collectively shown in Table 2 together with the emulsion polymerization composition.
【００６２】比較例２ 実施例１において、アニオン系界面活性剤を、ドデシル
ベンゼンスルホン酸ソーダ０．８重量部に変更した。ま
たノニオン系界面活性剤を、プロペニル基付加ポリオキ
シエチレンノニルフェニルエーテル（Ａ）（酸化エチレ
ン付加モル数２０）（アクアロンＲＮ−２０：第一工業
製薬社製）０．８重量部に変更した。それ以外は実施例
１と同様に行った。その結果を、乳化重合組成ととも
に、まとめて表２に示す。なお、この場合、多くの凝集
物が生成したため、粘着テープの製造は行わなかった。 Comparative Example 2 In Example 1, the anionic surfactant was changed to 0.8 part by weight of sodium dodecylbenzene sulfonate. Further, the nonionic surfactant was changed to 0.8 part by weight of a propenyl group-added polyoxyethylene nonylphenyl ether (A) (ethylene oxide addition mole number 20) (Aqualon RN-20: manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.). Other than that was performed like Example 1. The results are collectively shown in Table 2 together with the emulsion polymerization composition. In this case, since many aggregates were formed, the adhesive tape was not manufactured.
【００６３】比較例３ 実施例１において、モノマー組成を、２−エチルヘキシ
ルメタクリレート２０重量部、ｎ−ブチルアクリレート
７５重量部、メタクリル酸３重量部、メタクリルアミド
０．５重量部に変更した。また、アニオン系界面活性剤
を、ポリオキシエチレンアルキルフェニルエーテル硫酸
アンモニウム（エレミノールＥＳ−２０：三洋化成社
製）０．６重量部に変更した。また、ノニオン系界面活
性剤を、ポリオキシエチレンアルキルフェニルエーテル
（ノイゲンＥＡ−１４０：第一工業製薬社製）０．８重
量部に変更した。それ以外は実施例１と同様に行った。
その結果を、乳化重合組成とともに、まとめて表２に示
す。比較例４ 比較例３において、ノニオン系界面活性剤を、ポリオキ
シエチレンアルキルフェニルエーテル（ノイゲンＥＡ−
１４０：第一工業製薬社製）３．４重量部に変更した。
それ以外は比較例３と同様に行った。その結果を、乳化
重合組成とともに、まとめて表２に示す。 Comparative Example 3 In Example 1, the monomer composition was changed to 20 parts by weight of 2-ethylhexyl methacrylate, 75 parts by weight of n-butyl acrylate, 3 parts by weight of methacrylic acid and 0.5 part by weight of methacrylamide. Further, the anionic surfactant was changed to 0.6 part by weight of polyoxyethylene alkylphenyl ether ammonium sulfate (Eleminol ES-20: manufactured by Sanyo Kasei Co., Ltd.). Further, the nonionic surfactant was changed to 0.8 part by weight of polyoxyethylene alkylphenyl ether (Neugen EA-140: manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.). Other than that was performed like Example 1.
The results are collectively shown in Table 2 together with the emulsion polymerization composition. Comparative Example 4 In Comparative Example 3, the nonionic surfactant was replaced by polyoxyethylene alkyl phenyl ether (Neugen EA-
140: manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) 3.4 parts by weight.
Other than that was performed like Comparative Example 3. The results are collectively shown in Table 2 together with the emulsion polymerization composition.
【００６４】比較例５ 実施例２において、モノマー組成を、２−エチルヘキシ
ルアクリレート５０重量部、ｎ−ブチルアクリレート４
７重量部、アクリル酸３重量部に変更した。それ以外は
実施例２と同様に行った。その結果を、乳化重合組成と
ともに、まとめて表３に示す。 Comparative Example 5 In Example 2, the monomer composition was changed to 50 parts by weight of 2-ethylhexyl acrylate and 4 parts of n-butyl acrylate.
Changed to 7 parts by weight and 3 parts by weight of acrylic acid. Other than that was performed like Example 2. The results are collectively shown in Table 3 together with the emulsion polymerization composition.
【００６５】[0065]
【表１】 [Table 1]
【００６６】[0066]
【表２】 [Table 2]
【００６７】[0067]
【表３】 [Table 3]
【００６８】[0068]
【発明の効果】上述の通り、この発明の製造方法によれ
ば、重合安定性及び機械安定性がよく、低粘度で高い固
形分を含有し、しかも耐水性を低下させることなく、接
着性能に優れた水分散型アクリル系粘着剤を得ることが
できる。As described above, according to the production method of the present invention, good polymerization stability and mechanical stability, low viscosity and high solid content are contained, and the adhesive performance is improved without lowering the water resistance. An excellent water-dispersed acrylic pressure-sensitive adhesive can be obtained.
【００６９】したがって、このような水分散型アクリル
系粘着剤を用いて、粘着テープもしくはシートを製造す
る際には、機械安定性がよく、低粘度で高い固形分を含
有するので、能率よく製造することができる。Therefore, when a pressure-sensitive adhesive tape or sheet is manufactured using such a water-dispersible acrylic pressure-sensitive adhesive, it has good mechanical stability, contains a low viscosity and high solid content, and can be manufactured efficiently. can do.
【００７０】そして、得られる粘着テープもしくはシー
トは、耐水性がよく接着性能に優れ、包装用、事務用、
電気絶縁用、医療用、表示用、その他広汎な用途に好適
に使用することができる。The obtained adhesive tape or sheet has good water resistance and excellent adhesiveness, and is suitable for packaging, office work,
It can be suitably used for electrical insulation, medical use, display, and a wide range of other purposes.
Claims (5)
タ）アクリル酸アルキルエステルを主成分とし、これと
共重合可能で酸性基を有するビニル系モノマーと塩基性
基を有するビニル系モノマーとの混合モノマーを、乳化
剤としてポリオキシエチレン鎖を有するアニオン系界面
活性剤と共重合性二重結合を有するノニオン系界面活性
剤との混合界面活性剤を用い、水媒体中で乳化重合する
ことを特徴とする水分散型アクリル系粘着剤の製造方
法。1. A vinyl-based monomer having an alkyl group having a carbon number of 4 to 14 as a main component, which is copolymerizable therewith and has an acidic group and a vinyl-based monomer having a basic group. It is possible to carry out emulsion polymerization of the mixed monomer of in an aqueous medium using a mixed surfactant of an anionic surfactant having a polyoxyethylene chain as an emulsifier and a nonionic surfactant having a copolymerizable double bond. A method for producing a water-dispersible acrylic pressure-sensitive adhesive, which is characterized.
タ）アクリル酸アルキルエステル６０〜９７重量％と、
これと共重合可能で酸性基を有するビニル系モノマー
０．５〜５重量％と塩基性基を有するビニル系モノマー
０．５〜５重量％との混合モノマー１００重量部を、乳
化剤としてポリオキシエチレン鎖を有するアニオン系界
面活性剤０．３〜１．０重量部と共重合性二重結合を有
するノニオン系界面活性剤０．２〜１．５重量部との混
合界面活性剤０．５〜２．０重量部を用い、水媒体中で
乳化重合することを特徴とする水分散型アクリル系粘着
剤の製造方法。2. 60 to 97% by weight of a (meth) acrylic acid alkyl ester having an alkyl group with 4 to 14 carbon atoms,
As an emulsifier, 100 parts by weight of a mixed monomer of 0.5 to 5% by weight of a vinyl monomer having an acidic group and 0.5 to 5% by weight of a vinyl monomer having a basic group, which can be copolymerized therewith, is used as an emulsifier. Mixed surfactant of 0.3 to 1.0 part by weight of a chain-containing anionic surfactant and 0.2 to 1.5 parts by weight of a nonionic surfactant having a copolymerizable double bond A method for producing a water-dispersed acrylic pressure-sensitive adhesive, which comprises performing emulsion polymerization in an aqueous medium using 2.0 parts by weight.
性剤０．５〜２．０重量部と水２５〜４０重量部との乳
化液を、重合開始剤を含有する水中に逐次添加して乳化
重合することを特徴とする請求項１又は２記載の水分散
型アクリル系粘着剤の製造方法。3. An emulsion obtained by sequentially adding 100 parts by weight of a mixed monomer, 0.5 to 2.0 parts by weight of a mixed surfactant and 25 to 40 parts by weight of water to water containing a polymerization initiator. Polymerizing, The manufacturing method of the water dispersion type acrylic adhesive of Claim 1 or 2 characterized by the above-mentioned.
得られる水分散型アクリル系粘着剤。4. A water-dispersed acrylic pressure-sensitive adhesive obtained by the production method according to claim 1, 2, or 3.
剤を用いて製造される粘着テープもしくはシート。5. A pressure-sensitive adhesive tape or sheet produced using the water-dispersible acrylic pressure-sensitive adhesive according to claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4278479A JPH06128543A (en) | 1992-10-16 | 1992-10-16 | Production of water-dispersed acrylic pressure-sensitive adhesive, water-dispersed acrylic pressure-sensitive adhesive, and pressure-sensitive adhesive tape or sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4278479A JPH06128543A (en) | 1992-10-16 | 1992-10-16 | Production of water-dispersed acrylic pressure-sensitive adhesive, water-dispersed acrylic pressure-sensitive adhesive, and pressure-sensitive adhesive tape or sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06128543A true JPH06128543A (en) | 1994-05-10 |
Family
ID=17597909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4278479A Pending JPH06128543A (en) | 1992-10-16 | 1992-10-16 | Production of water-dispersed acrylic pressure-sensitive adhesive, water-dispersed acrylic pressure-sensitive adhesive, and pressure-sensitive adhesive tape or sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06128543A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100525505B1 (en) * | 2002-11-05 | 2005-11-02 | (주)거명 | medical pressure senstive adhesive using reactive anionic surfactant |
| WO2006090572A1 (en) | 2005-02-23 | 2006-08-31 | Nitto Denko Corporation | Removable adhesive composition, removable adhesive layer, adhesive sheet, and surface protective material |
| JP2008143970A (en) * | 2006-12-07 | 2008-06-26 | Nitto Denko Corp | Manufacturing method for double-coated adhesion pressure-sensitive adhesion sheet |
| JP2010070770A (en) * | 2009-12-18 | 2010-04-02 | Nitto Denko Corp | Manufacturing method for double-coated adhesion pressure-sensitive adhesive sheet |
| JP2013227408A (en) * | 2012-04-25 | 2013-11-07 | Dic Corp | Pressure-sensitive adhesivity imparting agent, composition for aqueous pressure-sensitive adhesive agent, aqueous pressure-sensitive adhesive agent, and pressure-sensitive adhesive sheet |
| JP2019172842A (en) * | 2018-03-28 | 2019-10-10 | 日本カーバイド工業株式会社 | Resin composition for textile printing, and printed textile matter |
-
1992
- 1992-10-16 JP JP4278479A patent/JPH06128543A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100525505B1 (en) * | 2002-11-05 | 2005-11-02 | (주)거명 | medical pressure senstive adhesive using reactive anionic surfactant |
| WO2006090572A1 (en) | 2005-02-23 | 2006-08-31 | Nitto Denko Corporation | Removable adhesive composition, removable adhesive layer, adhesive sheet, and surface protective material |
| EP1852484A1 (en) * | 2005-02-23 | 2007-11-07 | Nitto Denko Corporation | Removable adhesive composition, removable adhesive layer, adhesive sheet, and surface protective material |
| EP1852484A4 (en) * | 2005-02-23 | 2008-03-05 | Nitto Denko Corp | Removable adhesive composition, removable adhesive layer, adhesive sheet, and surface protective material |
| US7968189B2 (en) | 2005-02-23 | 2011-06-28 | Nitto Denko Corporation | Removable adhesive composition, removable adhesive layer, adhesive sheet, and surface protective material |
| JP2008143970A (en) * | 2006-12-07 | 2008-06-26 | Nitto Denko Corp | Manufacturing method for double-coated adhesion pressure-sensitive adhesion sheet |
| US8685492B2 (en) | 2006-12-07 | 2014-04-01 | Nitto Denko Corporation | Method for producing double-sided pressure-sensitive adhesive sheet |
| JP2010070770A (en) * | 2009-12-18 | 2010-04-02 | Nitto Denko Corp | Manufacturing method for double-coated adhesion pressure-sensitive adhesive sheet |
| JP2013227408A (en) * | 2012-04-25 | 2013-11-07 | Dic Corp | Pressure-sensitive adhesivity imparting agent, composition for aqueous pressure-sensitive adhesive agent, aqueous pressure-sensitive adhesive agent, and pressure-sensitive adhesive sheet |
| JP2019172842A (en) * | 2018-03-28 | 2019-10-10 | 日本カーバイド工業株式会社 | Resin composition for textile printing, and printed textile matter |
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