JP2002129122A - Adhesive composition and adhesive tape for recyclable member - Google Patents
Adhesive composition and adhesive tape for recyclable memberInfo
- Publication number
- JP2002129122A JP2002129122A JP2000322266A JP2000322266A JP2002129122A JP 2002129122 A JP2002129122 A JP 2002129122A JP 2000322266 A JP2000322266 A JP 2000322266A JP 2000322266 A JP2000322266 A JP 2000322266A JP 2002129122 A JP2002129122 A JP 2002129122A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- sensitive adhesive
- parts
- pressure
- 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.)
- Granted
Links
Landscapes
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、再利用（リサイク
ル）可能な各種部品に対して初期粘着力が極めて高く、
しかも該部品から剥離する際の再剥離性にも優れ、更に
発泡体への接着性にも優れた粘着剤組成物及びそれを用
いたリサイクル部品用粘着テープ、特には両面粘着テー
プに関するものである。BACKGROUND OF THE INVENTION The present invention relates to a reusable (recyclable) component having an extremely high initial adhesive strength.
In addition, the present invention relates to a pressure-sensitive adhesive composition which is excellent in removability when peeled from the part and further has excellent adhesion to a foam, and a pressure-sensitive adhesive tape for recycled parts using the same, particularly a double-sided pressure-sensitive adhesive tape. .
【０００２】[0002]
【従来の技術】従来より、粘着シートや粘着テープ等の
各種粘着加工品には、粘着剤としてアクリル系樹脂が多
用されており、かかる粘着剤は、通常、（半）永久接着
を目的とすることが多いが、近年では、地球環境保護の
高まりから省資源等を目的として、製品に使用されてい
る再利用可能な部品については再利用（リサイクル）す
ることが多くなってきている。この際、両面粘着テープ
等を使用している場合では、部品に貼付されている両面
粘着テープを剥離する必要があり、かかる剥離時におい
て粘着剤が被着体に残らない等の再剥離性が要求されて
いる。2. Description of the Related Art Conventionally, acrylic-based resins have been frequently used as adhesives in various adhesive processed products such as adhesive sheets and adhesive tapes, and such adhesives are usually used for (semi) permanent adhesion. In many cases, reusable parts used in products are often reused (recycled) in recent years for the purpose of resource saving and the like due to an increase in global environmental protection. At this time, when using a double-sided adhesive tape, etc., it is necessary to peel the double-sided adhesive tape attached to the component, and at the time of such peeling, re-peelability such that the adhesive does not remain on the adherend is required. Has been requested.
【０００３】このような粘着剤として、例えば特開平
８−２０９０８６号公報では、炭素数が１〜１２のアル
キル基を有する（メタ）アクリル酸アルキルエステル６
０〜９８重量％と、窒素含有ビニル単量体２〜２０重量
％と、架橋剤と反応する官能基を有するビニル単量体
０．１〜２重量％と、からなるアクリル系共重合体を主
成分とするアクリル系粘着剤組成物が、特開平１１−
２６９４３９号公報では、炭素数が４から１２のアルキ
ル基を有する（メタ）アクリル酸アルキルエステルモノ
マー５０重量％以上、高極性ビニルモノマー１〜２０重
量％、水酸基を含有するビニルモノマー０．０５〜５重
量％を必須成分として調製されるアクリル共重合体と、
粘着付与樹脂として熱可塑性キシレン系樹脂及び重合ロ
ジン系樹脂と、イソシアネート化合物とを含有する強接
着再剥離型粘着剤が、それぞれ提案されている。As such a pressure-sensitive adhesive, for example, JP-A-8-209086 discloses an alkyl (meth) acrylate 6 having an alkyl group having 1 to 12 carbon atoms.
An acrylic copolymer comprising 0 to 98% by weight, 2 to 20% by weight of a nitrogen-containing vinyl monomer, and 0.1 to 2% by weight of a vinyl monomer having a functional group which reacts with a crosslinking agent. The acrylic pressure-sensitive adhesive composition as a main component is disclosed in
No. 269439 discloses that a (meth) acrylic acid alkyl ester monomer having an alkyl group having 4 to 12 carbon atoms is 50% by weight or more, a highly polar vinyl monomer is 1 to 20% by weight, and a hydroxyl group-containing vinyl monomer is 0.05 to 5%. Acrylic copolymer prepared as an essential component by weight%,
A strongly adhesive re-peelable pressure-sensitive adhesive containing a thermoplastic xylene-based resin and a polymerized rosin-based resin as a tackifying resin, and an isocyanate compound has been proposed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記
及び開示技術では、リサイクル用として要求される再
剥離性については剥離時の基材への糊残りは改善されて
いるものの、特にポリオレフィン、ポリカーボネート、
ＡＢＳ、塩化ビニル等を被着体とする場合ではまだまだ
満足するものではなく、更に、初期粘着力についてもま
だまだ不充分であり、特にＯＡ機器等の用途においては
再剥離性とともに初期粘着力が要求されており、更なる
改良が望まれる。However, in the above-mentioned and the disclosed techniques, the releasability required for recycling is improved in that the adhesive residue on the substrate at the time of peeling is improved, but in particular polyolefin, polycarbonate, and the like.
In the case where the adherend is made of ABS, vinyl chloride, etc., it is still unsatisfactory, and the initial adhesive strength is still insufficient. Particularly in applications such as OA equipment, the initial adhesive strength is required together with the removability. And further improvement is desired.
【０００５】一方、近年では、振動や衝撃の防止、断熱
等の点から、リサイクル可能な部品とポリエチレン、ポ
リウレタン、ネオプレンゴム等の樹脂の発泡体とを接着
させるための両面粘着テープも要求されており、該発泡
体への接着性に優れた粘着剤組成物が検討されている
が、上記再剥離性を満足しつつ、発泡体と粘着剤組成物
との接着力を十分に確保することは困難であった。On the other hand, in recent years, double-sided pressure-sensitive adhesive tapes for bonding recyclable parts to resin foams such as polyethylene, polyurethane, and neoprene rubber have been demanded from the viewpoints of preventing vibration and impact, heat insulation, and the like. Thus, a pressure-sensitive adhesive composition having excellent adhesion to the foam has been studied.However, while satisfying the removability described above, it is not enough to ensure sufficient adhesive force between the foam and the pressure-sensitive adhesive composition. It was difficult.
【０００６】そこで、本発明ではこのような背景下にお
いて、上記要求を満足すべく、各種リサイクル可能な部
品（被着体）に対して初期粘着力が極めて高く、しかも
被着体からの再剥離性にも優れ、更に発泡体への接着性
にも優れた粘着剤組成物を提供すること、及びそれを用
いたリサイクル部品用粘着テープ、特には両面粘着テー
プを提供することを目的とするものである。[0006] Under such circumstances, in the present invention, in order to satisfy the above-mentioned requirements, the initial adhesive strength to various recyclable parts (adherends) is extremely high, and furthermore, re-peeling from the adherends is required. The object of the present invention is to provide a pressure-sensitive adhesive composition having excellent adhesiveness and also excellent adhesion to a foam, and to provide a pressure-sensitive adhesive tape for recycled parts using the same, particularly a double-sided pressure-sensitive adhesive tape. It is.
【０００７】[0007]
【課題を解決するための手段】しかるに、本発明者等は
かかる課題を解決すべく鋭意研究を重ねた結果、カルボ
キシル基及びヒドロキシル基を含有するアクリル系共重
合体（Ａ）、エポキシ基を少なくとも２個以上有するエ
ポキシ基含有化合物（Ｂ）、テルペンフェノール系樹脂
（ｃ１）及び／又は重合ロジンエステル（ｃ２）を含む
粘着付与剤（Ｃ）及び架橋剤（Ｄ）からなる粘着剤組成
物が上記目的に合致することを見出し、本発明を完成し
た。Means for Solving the Problems However, as a result of intensive studies to solve the problems, the present inventors have found that an acrylic copolymer (A) containing a carboxyl group and a hydroxyl group, and at least an epoxy group. The pressure-sensitive adhesive composition comprising an epoxy group-containing compound (B) having two or more, a tackifier (C) containing a terpene phenolic resin (c1) and / or a polymerized rosin ester (c2), and a crosslinking agent (D) is as described above. The present inventors have found that the present invention meets the purpose, and completed the present invention.
【０００８】本発明では特に、カルボキシル基及びヒド
ロキシル基を含有するアクリル系共重合体（Ａ）が、ア
クリル酸エステル系モノマー（ａ１）５０〜９９重量
％、カルボキシル基含有エチレン性不飽和モノマー（ａ
２）０．１〜１０重量％、ヒドロキシル基含有エチレン
性不飽和モノマー（ａ３）０．０５〜１重量％、その他
のエチレン性不飽和モノマー（ａ４）３９重量％以下を
共重合成分とするアクリル系共重合体であることが好ま
しく、又、エポキシ基を少なくとも２個以上有するエポ
キシ基含有化合物（Ｂ）が水酸基をも有する化合物であ
ることが好ましい。又、本発明では、かかる粘着剤組成
物を基材の少なくとも片面に設けてなる粘着テープ、更
には、基材が不織布中芯の両面粘着テープに非常に有用
である。In the present invention, in particular, the acrylic copolymer (A) containing a carboxyl group and a hydroxyl group comprises 50 to 99% by weight of an acrylate ester monomer (a1) and a carboxyl group-containing ethylenically unsaturated monomer (a).
2) Acrylic containing 0.1 to 10% by weight, 0.05 to 1% by weight of hydroxyl group-containing ethylenically unsaturated monomer (a3) and 39% by weight or less of other ethylenically unsaturated monomer (a4). It is preferable that the epoxy group-containing compound (B) having at least two epoxy groups is a compound also having a hydroxyl group. Further, in the present invention, such a pressure-sensitive adhesive composition is very useful for a pressure-sensitive adhesive tape provided on at least one surface of a substrate, and further, a double-sided pressure-sensitive adhesive tape having a substrate of a non-woven fabric core.
【０００９】[0009]
【発明の実施の形態】以下、本発明について具体的に説
明する。本発明で用いるアクリル系共重合体（Ａ）とし
ては、カルボキシル基及びヒドロキシル基を含有するア
クリル系共重合体であれば特に制限されないが、中でも
アクリル酸エステル系モノマー（ａ１）、カルボキシル
基含有エチレン性不飽和モノマー（ａ２）、ヒドロキシ
ル基含有エチレン性不飽和モノマー（ａ３）、及び必要
に応じてその他のエチレン性不飽和モノマー（ａ４）を
共重合成分とするアクリル系共重合体であることが好ま
しい。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described specifically. The acrylic copolymer (A) used in the present invention is not particularly limited as long as it is an acrylic copolymer containing a carboxyl group and a hydroxyl group. Among them, acrylic ester monomers (a1) and carboxyl group-containing ethylene Acrylic copolymer having a copolymerizable component of an ethylenically unsaturated monomer (a2), a hydroxyl group-containing ethylenically unsaturated monomer (a3), and if necessary, another ethylenically unsaturated monomer (a4). preferable.
【００１０】アクリル酸エステル系モノマー（ａ１）と
しては、例えば、メチル（メタ）アクリレート、エチル
（メタ）アクリレート、プロピル（メタ）アクリレー
ト、ブチル（メタ）アクリレート、ヘキシル（メタ）ア
クリレート、２−エチルヘキシル（メタ）アクリレー
ト、イソノニル（メタ）アクリレート、ベンジル（メ
タ）アクリレート、シクロヘキシル（メタ）アクリレー
ト、ジメチルアミノエチル（メタ）アクリレート、イソ
オクチル（メタ）アクリレート、ｎ−オクチル（メタ）
アクリレート、ラウリル（メタ）アクリレート、２−メ
トキシエチル（メタ）アクリレート、ブトキシエチル
（メタ）アクリレート、メトキシトリエチレングリコー
ル（メタ）アクリレート等が挙げられ、中でもアルキル
基の炭素数が１〜１２のアクリル酸アルキルエステルが
好ましく、メチル（メタ）アクリレート、エチル（メ
タ）アクリレート、ブチル（メタ）アクリレート、２−
エチルヘキシル（メタ）アクリレートが好ましく用いら
れる。As the acrylate monomer (a1), for example, methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, hexyl (meth) acrylate, 2-ethylhexyl ( (Meth) acrylate, isononyl (meth) acrylate, benzyl (meth) acrylate, cyclohexyl (meth) acrylate, dimethylaminoethyl (meth) acrylate, isooctyl (meth) acrylate, n-octyl (meth)
Acrylate, lauryl (meth) acrylate, 2-methoxyethyl (meth) acrylate, butoxyethyl (meth) acrylate, methoxytriethylene glycol (meth) acrylate, and the like, among which acrylic acid having 1 to 12 carbon atoms in the alkyl group Alkyl esters are preferred, and methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, 2-
Ethylhexyl (meth) acrylate is preferably used.
【００１１】カルボキシル基含有エチレン性不飽和モノ
マー（ａ２）としては、例えば、（メタ）アクリル酸、
クロトン酸、マレイン酸、無水マレイン酸、フマール
酸、シトラコン酸、グルタコン酸、イタコン酸、アクリ
ルアミドＮ−グリコール酸、ケイ皮酸等が挙げられ、中
でも（メタ）アクリル酸が好ましく用いられる。Examples of the carboxyl group-containing ethylenically unsaturated monomer (a2) include (meth) acrylic acid,
Examples thereof include crotonic acid, maleic acid, maleic anhydride, fumaric acid, citraconic acid, glutaconic acid, itaconic acid, acrylamide N-glycolic acid, and cinnamic acid. Among them, (meth) acrylic acid is preferably used.
【００１２】ヒドロキシル基含有エチレン性不飽和モノ
マー（ａ３）としては、例えば、２−ヒドロキシエチル
（メタ）アクリレート、２−ヒドロキシプロピル（メ
タ）アクリレート、３−クロロ−２−ヒドロキシプロピ
ル（メタ）アクリレート、テトラヒドロフルフリル（メ
タ）アクリレート、２−ヒドロキシ３−フェノキシプロ
ピル（メタ）アクリレート、ジエチレングリコール（メ
タ）アクリレート、ポリエチレングリコール（メタ）ア
クリレート、Ｎ−メチロール（メタ）アクリルアミド等
が挙げられ、中でも２−ヒドロキシエチル（メタ）アク
リレート等が好ましく用いられる。Examples of the hydroxyl group-containing ethylenically unsaturated monomer (a3) include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-chloro-2-hydroxypropyl (meth) acrylate, Tetrahydrofurfuryl (meth) acrylate, 2-hydroxy-3-phenoxypropyl (meth) acrylate, diethylene glycol (meth) acrylate, polyethylene glycol (meth) acrylate, N-methylol (meth) acrylamide, etc., among which 2-hydroxyethyl (Meth) acrylate and the like are preferably used.
【００１３】その他のエチレン性不飽和モノマー（ａ
４）としては、例えば、スチレン、酢酸ビニル、アクリ
ルニトリル、アクリルアミド等が挙げられる。Other ethylenically unsaturated monomers (a
Examples of 4) include styrene, vinyl acetate, acrylonitrile, acrylamide and the like.
【００１４】かかるアクリル酸エステル系モノマー（ａ
１）、カルボキシル基含有エチレン性不飽和モノマー
（ａ２）、ヒドロキシル基含有エチレン性不飽和モノマ
ー（ａ３）及びその他のエチレン性不飽和モノマー（ａ
４）の配合割合（共重合比）は特に限定されないが、ア
クリル酸エステル系モノマー（ａ１）を５０〜９９重量
％（好ましくは７０〜９５重量％）、カルボキシル基含
有エチレン性不飽和モノマー（ａ２）を０．１〜１０重
量％（好ましくは４〜８重量％）、ヒドロキシル基含有
エチレン性不飽和モノマー（ａ３）を０．０５〜１重量
％（好ましくは０．０５〜０．２重量％）、その他のエ
チレン性不飽和モノマー（ａ４）を３９重量％以下（好
ましくは２〜１０重量％）とすることが好ましい。The acrylate monomer (a)
1), a carboxyl group-containing ethylenically unsaturated monomer (a2), a hydroxyl group-containing ethylenically unsaturated monomer (a3) and other ethylenically unsaturated monomers (a
Although the mixing ratio (copolymerization ratio) of 4) is not particularly limited, 50 to 99% by weight (preferably 70 to 95% by weight) of an acrylate monomer (a1) and a carboxyl group-containing ethylenically unsaturated monomer (a2) are used. ) Is 0.1 to 10% by weight (preferably 4 to 8% by weight), and the hydroxyl group-containing ethylenically unsaturated monomer (a3) is 0.05 to 1% by weight (preferably 0.05 to 0.2% by weight). ), And the other ethylenically unsaturated monomer (a4) is preferably 39% by weight or less (preferably 2 to 10% by weight).
【００１５】アクリル酸エステル系モノマー（ａ１）が
５０重量％未満では粘着力が低くなり、９９重量％を越
えると架橋不足となり好ましくなく、カルボキシル基含
有エチレン性不飽和モノマー（ａ２）が０．１重量％未
満では架橋反応が進行せず、１０重量％を越えると架橋
反応が過剰となり好ましくない。更にヒドロキシル基含
有エチレン性不飽和モノマー（ａ３）が０．０５重量％
未満では架橋反応が進行せず、１重量％を越えると粘着
力が低くなり好ましくなく、その他のエチレン性不飽和
モノマー（ａ４）が３９重量％を越えると粘着力が低下
し好ましくない。When the amount of the acrylate monomer (a1) is less than 50% by weight, the adhesive strength becomes low, and when the amount exceeds 99% by weight, crosslinking becomes insufficient, which is not preferable. If the amount is less than 10% by weight, the crosslinking reaction does not proceed. Furthermore, 0.05% by weight of the hydroxyl group-containing ethylenically unsaturated monomer (a3)
If the amount is less than 1, the crosslinking reaction does not proceed, and if it exceeds 1% by weight, the adhesive strength decreases, which is not preferable. If the amount of other ethylenically unsaturated monomer (a4) exceeds 39% by weight, the adhesiveness decreases, which is not preferable.
【００１６】上記のアクリル系共重合体（Ａ）は、前記
（ａ１）〜（ａ４）を有機溶剤中でラジカル共重合させ
る如き、当業者周知の方法によって容易に製造される。
かかる重合に用いられる有機溶剤としては、トルエン、
キシレン等の芳香族炭化水素類、酢酸エチル、酢酸ブチ
ル等のエステル類、ｎ−プロピルアルコール、ｉso-プ
ロピルアルコール等の脂肪族アルコール類、メチルエチ
ルケトン、メチルイソブチルケトン、シクロヘキサノン
等のケトン類等が挙げられる。The above acrylic copolymer (A) can be easily produced by a method well known to those skilled in the art, such as radical copolymerization of the above (a1) to (a4) in an organic solvent.
As the organic solvent used for such polymerization, toluene,
Aromatic hydrocarbons such as xylene; esters such as ethyl acetate and butyl acetate; aliphatic alcohols such as n-propyl alcohol and iso-propyl alcohol; ketones such as methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone. .
【００１７】かかるラジカル共重合に使用する重合触媒
としては、通常のラジカル重合触媒であるアゾビスイソ
ブチロニトリル、ベンゾイルパーオキサイド、ジ−ｔ−
ブチルパーオキサイド、クメンハイドロパーオキサイド
等が具体例として挙げられる。As the polymerization catalyst used for such radical copolymerization, azobisisobutyronitrile, benzoyl peroxide, di-t-
Butyl peroxide, cumene hydroperoxide and the like are mentioned as specific examples.
【００１８】かくして本発明で用いるカルボキシル基及
びヒドロキシル基を含有するアクリル系共重合体（Ａ）
が得られるわけであるが、かかるアクリル系共重合体の
重量平均分子量は１０万〜１２０万であることが好まし
く、更には３０万〜１００万が好ましく、重量平均分子
量が１０万未満では保持力が弱くなり、１２０万を越え
ると粘着力が低下し好ましくない。Thus, the acrylic copolymer (A) containing a carboxyl group and a hydroxyl group used in the present invention.
Is obtained, the weight average molecular weight of such an acrylic copolymer is preferably 100,000 to 1.2 million, more preferably 300,000 to 1,000,000, and when the weight average molecular weight is less than 100,000, the holding power is When it exceeds 1.2 million, the adhesive strength is undesirably reduced.
【００１９】本発明で用いるエポキシ基含有化合物
（Ｂ）としては、エポキシ基を少なくとも２個以上有す
る化合物であれば特に限定されることはなく、例えば、
エチレングリコールジグリシジルエーテル、ジエチレン
グリコールジグリシジルエーテル、ポリエチレングリコ
ールジグリシジルエーテル、プロピレングリコールジグ
リシジルエーテル、トリプロピレングリコールジグリシ
ジルエーテル、ポリプロピレングリコールジグリシジル
エーテル、ネオペンチルグリコールジグリシジルエーテ
ル、１，６−ヘキサンジオールジグリシジルエーテル、
トリメチロールプロパントリグリシジルエーテル、２，
２−ジブロモ・ネオペンチルグリコールジグリシジルエ
ーテル、アジピン酸ジグリシジルエステル、ｏ−フタル
酸ジグリシジルエステル、ジブロモネオペンチルグリコ
ールジグリシジルエーテル、ポリテトラメチレングリコ
ールジグリシジルエーテル、レゾルシンジグリシジルエ
ーテル、ソルビトールポリグリシジルエーテル、ポリグ
リセリンポリグリシジルエーテル、ペンタエリスリトー
ルポリグリシジルエーテル、ジグリセリンポリグリシジ
ルエーテル、トリグリシジルトリス（２−ヒドロキシエ
チル）イソシアヌレート、グリセリンジグリシジルエー
テル、グリセリントリグリシジルエーテル、Ｎ，Ｎ，
Ｎ’，Ｎ’−テトラグリシジルｍ−キシレンジアミン、
１，３−ビス（Ｎ，Ｎ−ジグリシジルアミノメチル）シ
クロヘキサン、水添ビスフェノールＡジグリシジルエー
テル等が挙げられ、中でも特に、水酸基をも有するエポ
キシ基含有化合物が好ましく、例えばソルビトールポリ
グリシジルエーテル、ポリグリセリンポリグリシジルエ
ーテル、ジグリセリンポリグリシジルエーテル、グリセ
リンジグリシジルエーテルが好適に用いられる。The epoxy group-containing compound (B) used in the present invention is not particularly limited as long as it has at least two epoxy groups.
Ethylene glycol diglycidyl ether, diethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, tripropylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, neopentyl glycol diglycidyl ether, 1,6-hexanediol di Glycidyl ether,
Trimethylolpropane triglycidyl ether, 2,
2-dibromo / neopentyl glycol diglycidyl ether, adipic acid diglycidyl ester, o-phthalic acid diglycidyl ester, dibromoneopentyl glycol diglycidyl ether, polytetramethylene glycol diglycidyl ether, resorcin diglycidyl ether, sorbitol polyglycidyl ether , Polyglycerin polyglycidyl ether, pentaerythritol polyglycidyl ether, diglycerin polyglycidyl ether, triglycidyl tris (2-hydroxyethyl) isocyanurate, glycerin diglycidyl ether, glycerin triglycidyl ether, N, N,
N ′, N′-tetraglycidyl m-xylenediamine,
Examples thereof include 1,3-bis (N, N-diglycidylaminomethyl) cyclohexane and hydrogenated bisphenol A diglycidyl ether. Among them, an epoxy group-containing compound also having a hydroxyl group is preferable. For example, sorbitol polyglycidyl ether, polysorbate Glycerin polyglycidyl ether, diglycerin polyglycidyl ether, and glycerin diglycidyl ether are preferably used.
【００２０】本発明で用いる粘着付与剤（Ｃ）として
は、テルペンフェノール系樹脂（ｃ１）及び／又は重合
ロジンエステル（ｃ２）を用いることが必要である。As the tackifier (C) used in the present invention, it is necessary to use a terpene phenolic resin (c1) and / or a polymerized rosin ester (c2).
【００２１】テルペンフェノール系樹脂（ｃ１）と重合
ロジンエステル（ｃ２）を併用する場合には、テルペン
フェノール系樹脂（ｃ１）と重合ロジンエステル（ｃ
２）との含有割合は、テルペンフェノール系樹脂（ｃ
１）：重合ロジンエステル（ｃ２）＝２０：１００〜６
０：１００であることが好ましく、特には３０：１００
〜５０：１００であることが好ましい。When the terpene phenolic resin (c1) and the polymerized rosin ester (c2) are used in combination, the terpene phenolic resin (c1) and the polymerized rosin ester (c) are used.
2) with the terpene phenolic resin (c)
1): Polymerized rosin ester (c2) = 20: 100-6
The ratio is preferably 0: 100, particularly 30: 100.
５０50: 100 is preferred.
【００２２】更に、必要に応じて、テルペン系樹脂、フ
ェノール系樹脂、シリコーン樹脂、クマロン系樹脂、ロ
ジン系化合物（ロジン若しくは水添化ロジンのエステル
類）、石油樹脂、キシレン樹脂等のその他の粘着付与剤
を配合することも可能である。Further, if necessary, other adhesives such as terpene resins, phenol resins, silicone resins, cumarone resins, rosin compounds (esters of rosin or hydrogenated rosin), petroleum resins, xylene resins, etc. It is also possible to mix an imparting agent.
【００２３】上記の如き、アクリル系共重合体（Ａ）、
エポキシ基含有化合物（Ｂ）、粘着付与剤（Ｃ）の含有
量については、特に限定されないが、アクリル系共重合
体（Ａ）１００重量部に対して、エポキシ基含有化合物
（Ｂ）が０．０５〜２０重量部であることが好ましく、
より好ましくは０．１〜１０重量部、特に好ましくは
０．１〜１重量部であり、粘着付与剤（Ｃ）が４〜５０
重量部であることが好ましく、より好ましくは２０〜４
０重量部、特に好ましくは２５〜３５重量部である。As described above, the acrylic copolymer (A),
The contents of the epoxy group-containing compound (B) and the tackifier (C) are not particularly limited, but the content of the epoxy group-containing compound (B) is 0.1 to 100 parts by weight of the acrylic copolymer (A). Preferably from 0.5 to 20 parts by weight,
It is more preferably 0.1 to 10 parts by weight, particularly preferably 0.1 to 1 part by weight, and the tackifier (C) is 4 to 50 parts by weight.
Parts by weight, more preferably 20 to 4 parts by weight.
0 parts by weight, particularly preferably 25 to 35 parts by weight.
【００２４】かかるエポキシ基含有化合物（Ｂ）の含有
量が０．０５重量部未満では再剥離性に劣り、２０重量
部を越えると粘着力が低下し好ましくない。又、かかる
粘着付与剤（Ｃ）の含有量が４重量部未満では粘着力が
低下し、５０重量部を越えると表面タックが低下し好ま
しくない。If the content of the epoxy group-containing compound (B) is less than 0.05 part by weight, the removability is poor, and if it exceeds 20 parts by weight, the adhesive strength is undesirably reduced. When the content of the tackifier (C) is less than 4 parts by weight, the adhesive strength decreases, and when it exceeds 50 parts by weight, the surface tack decreases, which is not preferable.
【００２５】更に、かかるエポキシ基含有化合物（Ｂ）
と粘着付与剤（Ｃ）の含有割合については、粘着付与剤
（Ｃ）１００重量部に対してエポキシ基含有化合物
（Ｂ）が０．０５〜１０重量部であることが好ましく、
より好ましくは０．５〜５重量部、特に好ましくは０．
８〜３重量部である。かかる含有割合が０．０５重量部
未満では再剥離性に劣り、１０重量部を越えると粘着力
が低下し好ましくない。Further, the epoxy group-containing compound (B)
And the content of the tackifier (C), the epoxy group-containing compound (B) is preferably 0.05 to 10 parts by weight with respect to 100 parts by weight of the tackifier (C),
More preferably 0.5 to 5 parts by weight, particularly preferably 0.1 to 5 parts by weight.
8 to 3 parts by weight. If the content is less than 0.05 part by weight, the removability is poor, and if it exceeds 10 parts by weight, the adhesive strength is undesirably reduced.
【００２６】又、本発明で用いる架橋剤（Ｄ）として
は、エポキシ系、金属塩、金属アルコシド、アルデヒド
系化合物、非アミノ樹脂系アミノ化合物、尿素系、イソ
シアネート系、金属キレート系、メラミン系、アジリジ
ン系等、通常の粘着剤に使用される架橋剤を挙げること
ができ、これらのうち特に好ましくはイソシアネート系
化合物、更に好ましくは多官能イソシアネート、例えば
トリレンジイソシアネートのトリメチロールプロパン付
加物、エチレンジイソシアネート、１,４−ブタンジイ
ソシアネート、ジシクロヘキシルメタンジイソシアネー
ト、シクロヘキサンジイソシアネート、２，６−トリレ
ンジイソシアネート、４，４′−ジフェニルメタンジイ
ソシアネート、イソホロンジイソシアネート等が挙げら
れる。The crosslinking agent (D) used in the present invention includes epoxy compounds, metal salts, metal alkoxides, aldehyde compounds, non-amino resin amino compounds, urea compounds, isocyanate compounds, metal chelate compounds, melamine compounds, Crosslinking agents used for ordinary pressure-sensitive adhesives, such as aziridine-based compounds, can be mentioned. Of these, particularly preferred are isocyanate-based compounds, more preferably polyfunctional isocyanates, for example, trimethylolpropane adduct of tolylene diisocyanate, ethylene diisocyanate Examples thereof include 1,4-butane diisocyanate, dicyclohexylmethane diisocyanate, cyclohexane diisocyanate, 2,6-tolylene diisocyanate, 4,4'-diphenylmethane diisocyanate, and isophorone diisocyanate.
【００２７】かかる架橋剤（Ｄ）の含有量は、粘着剤組
成物に対して０．１〜５重量％であることが好ましく、
特に好ましくは１〜３重量％であり、かかる含有量が
０．１重量％未満では架橋反応性に乏しく、逆に５重量
％を越えると架橋反応が過剰となって好ましくない。The content of the crosslinking agent (D) is preferably 0.1 to 5% by weight based on the pressure-sensitive adhesive composition.
Particularly preferably, the content is 1 to 3% by weight. When the content is less than 0.1% by weight, the crosslinking reactivity is poor, and when the content exceeds 5% by weight, the crosslinking reaction becomes excessive, which is not preferable.
【００２８】尚、架橋を促進するために酸触媒、例えば
パラトルエンスルホン酸、リン酸、塩酸、塩化アンモニ
ウム等の架橋促進剤を併用することも可能で、かかる架
橋促進剤の添加量は架橋剤（Ｄ）に対して１０〜５０重
量％であることが好ましい。It is also possible to use an acid catalyst such as paratoluenesulfonic acid, phosphoric acid, hydrochloric acid, ammonium chloride or the like in combination to promote the crosslinking. It is preferably from 10 to 50% by weight based on (D).
【００２９】かくして上記のアクリル系共重合体
（Ａ）、エポキシ基含有化合物（Ｂ）、粘着付与剤
（Ｃ）及び架橋剤（Ｄ）からなる本発明の粘着剤組成物
が得られるわけであるが、本発明では更に、塩素化化合
物（Ｅ）を含有することがオレフィンへの粘着力が向上
する点で好ましい。Thus, the pressure-sensitive adhesive composition of the present invention comprising the acrylic copolymer (A), the epoxy group-containing compound (B), the tackifier (C) and the crosslinking agent (D) is obtained. However, in the present invention, it is preferable to further contain a chlorinated compound (E) from the viewpoint of improving the adhesion to olefins.
【００３０】かかる塩素化化合物（Ｅ）としては、塩素
化ポリプロピレン、塩素化ポリエチレン等が挙げられ、
特に塩素化ポリプロピレンが好適に用いられる。該塩素
化化合物（Ｅ）の含有量は、粘着剤組成物に対して０．
５〜２０重量％であることが好ましく、特に好ましくは
０．５〜３重量％であり、０．５重量％未満では粘着力
が低下し、２０重量％を越えると保持力が低下し好まし
くない。Examples of the chlorinated compound (E) include chlorinated polypropylene and chlorinated polyethylene.
Particularly, chlorinated polypropylene is preferably used. The content of the chlorinated compound (E) is 0.1% based on the pressure-sensitive adhesive composition.
The content is preferably from 5 to 20% by weight, particularly preferably from 0.5 to 3% by weight, and if it is less than 0.5% by weight, the adhesive strength decreases, and if it exceeds 20% by weight, the holding power decreases, which is not preferred. .
【００３１】又、必要に応じて、本発明の目的を逸脱し
ない範囲で、アクリル系共重合体（Ａ）、エポキシ基含
有化合物（Ｂ）、粘着付与剤（Ｃ）及び架橋剤（Ｄ）
（好ましくは更に塩素化化合物（Ｅ））からなる粘着剤
組成物に、従来公知の粘着剤用添加剤を必要に応じて添
加することができ、かかる公知の添加剤としては、顔
料、可塑剤、安定剤、充填剤等を挙げることができる。If necessary, the acrylic copolymer (A), the epoxy group-containing compound (B), the tackifier (C) and the cross-linking agent (D) may be used without departing from the object of the present invention.
(Preferably, a chlorinated compound (E)) can be added to the pressure-sensitive adhesive composition comprising a conventionally known pressure-sensitive adhesive, if necessary. Examples of such known additives include pigments and plasticizers. , Stabilizers, fillers and the like.
【００３２】本発明の粘着剤組成物の調製法としては、
溶剤の共存下で上記の（Ａ）〜（Ｄ）、好ましくは更に
（Ｅ）を配合（混合）すればよく、その配合順序等は特
に限定されない。この時用いられる溶剤としては、各成
分を溶解させるものであれば特に限定されず、酢酸メチ
ル、酢酸エチル、アセト酢酸メチル、アセト酢酸エチル
等のエステル類、アセトン、メチルイソブチルケトン等
のケトン類、トルエン、キシレン等の芳香族化合物等が
挙げられる。The preparation method of the pressure-sensitive adhesive composition of the present invention includes:
The above components (A) to (D), preferably (E), may be added (mixed) in the presence of a solvent, and the order of addition is not particularly limited. The solvent used at this time is not particularly limited as long as it dissolves each component.Methyl acetate, ethyl acetate, methyl acetoacetate, esters such as ethyl acetoacetate, acetone, ketones such as methyl isobutyl ketone, And aromatic compounds such as toluene and xylene.
【００３３】本発明の粘着剤組成物の使用に当たって
は、本発明の粘着剤組成物を樹脂固形分として４０〜５
０重量％程度の溶液状として、剥離紙上にアプリケータ
ーで塗工し、８０〜１００℃で２〜５分間乾燥した後、
対象基材に転写塗工することにより、基材の片面又は両
面に粘着剤層を形成させることができる。一般的には乾
燥後の膜厚が５０〜７５μｍ程度となるように調節す
る。In using the pressure-sensitive adhesive composition of the present invention, the pressure-sensitive adhesive composition of the present invention is used as a resin solid content of 40 to 5%.
As a solution of about 0% by weight, the composition is coated on a release paper with an applicator and dried at 80 to 100 ° C. for 2 to 5 minutes.
By performing transfer coating on the target substrate, an adhesive layer can be formed on one or both surfaces of the substrate. Generally, the thickness is adjusted so that the film thickness after drying is about 50 to 75 μm.
【００３４】かかる基材としては特に限定されず、クラ
フト紙、ＰＥＴ（ポリエチレンテレフタレート）、ポリ
スチレン、塩化ビニル等を基材とした片面粘着テープ
（シート）又は両面粘着テープ（シート）に勿論有用で
あるが、本発明では特に、パルプ、レーヨン、マニラ
麻、アクリロニトリル、ナイロン、ポリエステル等から
なる不織布を中芯とする両面粘着テープ（シート）とし
て非常に有用である。Such a substrate is not particularly limited, and is of course useful for a single-sided adhesive tape (sheet) or a double-sided adhesive tape (sheet) based on kraft paper, PET (polyethylene terephthalate), polystyrene, vinyl chloride or the like. However, in the present invention, it is particularly useful as a double-sided pressure-sensitive adhesive tape (sheet) having a nonwoven fabric made of pulp, rayon, manila hemp, acrylonitrile, nylon, polyester or the like as a core.
【００３５】該不織布は、引張強度を高めるために、必
要に応じてビスコース含浸処理や、熱可塑性樹脂をバイ
ンダーとした含浸処理等を施してもよい。不織布の厚み
は、３０〜２００μｍ、特には５０〜１５０μｍが好ま
しく、坪量は１０〜１００ｇ／ｍ2、特には１０〜５０
ｇ／ｍ2が好ましい。The nonwoven fabric may be subjected to a viscose impregnation treatment or an impregnation treatment using a thermoplastic resin as a binder, if necessary, in order to increase the tensile strength. The thickness of the nonwoven fabric is preferably from 30 to 200 μm, particularly preferably from 50 to 150 μm, and the basis weight is from 10 to 100 g / m 2 , especially from 10 to 50 μm.
g / m 2 is preferred.
【００３６】かくして本発明の粘着テープ、特には両面
粘着テープが得られるが、被着体としては、特に限定さ
れることなく、ステンレス、アルミニウム、鋼、銅、
鉄、ニッケル等をはじめとする金属類、ポリアミド、ポ
リエステル、ポリカーボネート、ポリプロピレン、ポリ
エチレン、フェノール樹脂、エポキシ樹脂、ポリウレタ
ン、ＡＢＳ、塩化ビニル等の樹脂類、ガラス類等、リサ
イクル可能な部品が挙げられる。Thus, the pressure-sensitive adhesive tape of the present invention, in particular, a double-sided pressure-sensitive adhesive tape is obtained, but the adherend is not particularly limited, and may be stainless steel, aluminum, steel, copper, or the like.
Recyclable parts such as metals such as iron and nickel, polyamides, polyesters, polycarbonates, polypropylenes, polyethylenes, phenolic resins, epoxy resins, polyurethanes, resins such as ABS and vinyl chloride, and glasses.
【００３７】更に、本発明では、被着体がポリウレタン
系発泡体、ポリスチレン系発泡体、ＡＢＳ系発泡体、ゴ
ム系（クロロプレンゴム、ＥＰＤＭ等）発泡体、塩化ビ
ニル系発泡体、ポリエチレン系発泡体、ポリプロピレン
系発泡体、フェノール系発泡体、ユリア系発泡体等の発
泡体であるときにも有効で、発泡体への接着性にも優れ
た粘着剤組成物である。Further, in the present invention, the adherend is a polyurethane foam, a polystyrene foam, an ABS foam, a rubber foam (chloroprene rubber, EPDM, etc.) foam, a vinyl chloride foam, a polyethylene foam. It is a pressure-sensitive adhesive composition that is effective even when it is a foam such as a polypropylene foam, a phenol foam or a urea foam, and has excellent adhesion to the foam.
【００３８】[0038]
【実施例】以下、実施例を挙げて本発明を具体的に説明
する。尚、実施例中、「部」、「％」とあるのは、特に
ことわりのない限り重量基準を示す。The present invention will be specifically described below with reference to examples. In the examples, “parts” and “%” are based on weight unless otherwise specified.
【００３９】実施例１ ［粘着剤組成物の調製］コンデンサー、撹拌機及び温度
計付きのフラスコに、２−エチルヘキシルアクリレート
（ａ１）６８．９部、ｎ−ブチルアクリレート（ａ１）
２０部、アクリル酸（ａ２）６部、２−ヒドロキシエチ
ルメタクリレート（ａ３）０．１部、酢酸ビニル（ａ
４）５部、酢酸エチル４１部、アゾビスイソブチロニト
リル（ＡＩＢＮ）０．１部を仕込み、９０℃に加温して
重合させ、重合途中にトルエン２０部にＡＩＢＮ０．１
部を溶解させた重合触媒液を逐次追加しながら７時間重
合させた後、重量平均分子量が６５万のアクリル系共重
合体（Ａ−１）溶液（樹脂分４５％）を得た。Example 1 Preparation of pressure-sensitive adhesive composition In a flask equipped with a condenser, a stirrer and a thermometer, 68.9 parts of 2-ethylhexyl acrylate (a1) and n-butyl acrylate (a1) were added.
20 parts, acrylic acid (a2) 6 parts, 2-hydroxyethyl methacrylate (a3) 0.1 part, vinyl acetate (a
4) 5 parts, 41 parts of ethyl acetate and 0.1 part of azobisisobutyronitrile (AIBN) were charged and heated to 90 ° C. to carry out polymerization.
After polymerization was carried out for 7 hours while sequentially adding a polymerization catalyst solution in which parts were dissolved, an acrylic copolymer (A-1) solution having a weight average molecular weight of 650,000 (resin content: 45%) was obtained.
【００４０】得られたアクリル系共重合体（Ａ−１）溶
液（樹脂分４５％）２２２部（樹脂分として１００
部）、エポキシ基含有化合物（Ｂ）としてグリセリンジ
グリシジルエーテル０．４部、粘着付与剤（Ｃ）として
軟化点８５℃のテルペンフェノール系樹脂（ｃ１）８
部、軟化点１３５℃の重合ロジンエステル（ｃ２）２０
部、架橋剤（Ｄ）としてイソシアネート系架橋剤（日本
ポリウレタン工業社製、「コロネートＬ−５５Ｅ」）
１．５部及び塩素化化合物（Ｅ）として塩素化ポリプロ
ピレン２部、トルエン３７部を混合撹拌して、本発明の
粘着剤組成物溶液（樹脂分４５％）を得た。得られた粘
着剤組成物について、下記の如く両面粘着テープを調製
して、以下の評価を行った。222 parts of the obtained acrylic copolymer (A-1) solution (resin content: 45%) (100 parts as resin content)
Parts), 0.4 parts of glycerin diglycidyl ether as the epoxy group-containing compound (B), and a terpene phenolic resin (c1) 8 having a softening point of 85 ° C. as the tackifier (C)
Part, polymerized rosin ester (c2) 20 having a softening point of 135 ° C.
Part, isocyanate-based crosslinking agent (“Coronate L-55E” manufactured by Nippon Polyurethane Industry Co., Ltd.) as crosslinking agent (D)
1.5 parts, 2 parts of chlorinated polypropylene as the chlorinated compound (E), and 37 parts of toluene were mixed and stirred to obtain a pressure-sensitive adhesive composition solution of the present invention (resin content: 45%). With respect to the obtained pressure-sensitive adhesive composition, a double-sided pressure-sensitive adhesive tape was prepared as described below and evaluated as follows.
【００４１】［両面粘着テープの調製］粘着剤組成物溶
液（樹脂分４５％）を離型紙上に、乾燥後の厚みが７５
μｍとなるように塗工して、１００℃で３分間乾燥して
得た粘着シートを、坪量１７ｇ／ｍ2の不織布の両面に
転写して、３ｋｇローラーで圧着し、両面粘着テープを
得た。尚、該両面粘着テープは４０℃で３日間エージン
グした後、下記の測定に使用した。[Preparation of double-sided pressure-sensitive adhesive tape] A pressure-sensitive adhesive composition solution (resin content: 45%) was dried on a release paper to a thickness of 75%.
μm, and dried at 100 ° C. for 3 minutes. The adhesive sheet obtained was transferred to both sides of a nonwoven fabric having a basis weight of 17 g / m 2 and pressed with a 3 kg roller to obtain a double-sided adhesive tape. Was. The double-sided pressure-sensitive adhesive tape was used for the following measurement after aging at 40 ° C. for 3 days.
【００４２】（初期粘着力）被着体（ＳＵＳ板、ポ
リプロピレン板、ＡＢＳ板、塩化ビニル板）に、厚
さ２５μｍのＰＥＴフィルムを裏打ちした２５ｍｍ×１
００ｍｍの上記両面粘着テープを、常温で２ｋｇゴムロ
ーラー２往復で加圧貼付し、２０℃で３０分間放置した
後、常温で剥離速度３００ｍｍ／ｍｉｎで１８０度剥離
強度（ｇ／２５ｍｍ）を測定した。(Initial Adhesive Strength) A 25 mm × 1 liner in which an adherend (SUS plate, polypropylene plate, ABS plate, vinyl chloride plate) is lined with a PET film having a thickness of 25 μm.
The above-mentioned double-sided pressure-sensitive adhesive tape of 00 mm was pressure-applied with two reciprocating 2 kg rubber rollers at room temperature, left at 20 ° C. for 30 minutes, and then measured at room temperature for 180 ° peel strength (g / 25 mm) at a peeling speed of 300 mm / min. .
【００４３】（再剥離性）被着体（ＳＵＳ板、ポリ
プロピレン板、ＡＢＳ板、塩化ビニル板）に、厚さ
２５μｍのＰＥＴフィルムを裏打ちした２５ｍｍ×１０
０ｍｍの上記両面粘着テープを、常温で２ｋｇゴムロー
ラー２往復で加圧貼付し、６５℃、８０％ＲＨで７日間
放置した後、常温で手で１３５度方向に両面テープをゆ
っくりと剥離したときの粘着剤組成物の被着体への糊残
りを観察し、下記の通り評価した。 ○・・・糊残りは見られなかった △・・・若干の糊残りが見られた ×・・・糊残りが多く見られた(Removability) A 25 mm × 10 mm (25 mm × 10 mm) liner made of a adherend (SUS plate, polypropylene plate, ABS plate, vinyl chloride plate) lined with a PET film having a thickness of 25 μm.
When the above-mentioned double-sided adhesive tape of 0 mm is pressure-applied with two reciprocating 2 kg rubber rollers at room temperature, left at 65 ° C. and 80% RH for 7 days, and then slowly peeled off at 135 ° by hand at room temperature. Of the pressure-sensitive adhesive composition on the adherend was observed and evaluated as follows. ○ ・ ・ ・ No adhesive residue was observed △ ・ ・ ・ Some adhesive residue was observed × ・ ・ ・ A large amount of adhesive residue was observed
【００４４】（定荷重剥離）被着体（ＳＵＳ板）に、
厚さ２５μｍのＰＥＴフィルムを裏打ちした２０ｍｍ×
５０ｍｍの上記両面粘着テープを、常温で２ｋｇゴムロ
ーラー２往復で加圧貼付し、７０℃で１時間放置した
後、常温で２００ｇの荷重をかけて９０度方向に剥離さ
せ、１時間後の剥離長さを測定し、下記の通り評価し
た。 ○・・・５ｍｍ未満 △・・・５ｍｍ以上１０ｍｍ未満 ×・・・１０ｍｍ以上(Constant Load Peeling) For the adherend (SUS plate),
20mm × lined with PET film of 25μm thickness
The above-mentioned double-sided adhesive tape of 50 mm is pressure-applied with two reciprocations of a 2 kg rubber roller at room temperature, left at 70 ° C. for 1 hour, then peeled off at 90 ° with a load of 200 g at room temperature and peeled after 1 hour The length was measured and evaluated as follows. ○ ・ ・ ・ less than 5mm △ ・ ・ ・ 5mm or more and less than 10mm × ・ ・ ・ 10mm or more
【００４５】（発泡体との接着性） （イ）剥離強度 厚さ１０ｍｍのウレタンエーテル系発泡体（発泡倍率３
０倍）を水平にして固定し、その上から、厚さ２５μｍ
のＰＥＴフィルムを裏打ちした２５ｍｍ×１００ｍｍの
上記両面粘着テープを、２ｋｇゴムローラーで２往復し
圧着率５０％で圧着し、２０℃で３０分間放置した後、
常温で剥離速度３００ｍｍ／ｍｉｎで９０度剥離強度
（ｇ／２５ｍｍ）を測定した。尚、圧着率５０％とは、
ゴムローラーを該発泡体の厚みが半分となるところまで
押しつけて圧着することである。(Adhesiveness to Foam) (a) Peel strength Urethane ether foam having a thickness of 10 mm (expansion ratio: 3
0x) is fixed horizontally, and a thickness of 25 μm
The above double-sided adhesive tape of 25 mm x 100 mm lined with a PET film was reciprocated two times with a 2 kg rubber roller and pressed at a pressing ratio of 50%, and left at 20 ° C for 30 minutes.
At room temperature, the 90 ° peel strength (g / 25 mm) was measured at a peel rate of 300 mm / min. In addition, 50% of crimping rates are
Pressing the rubber roller to a point where the thickness of the foam is reduced to half is performed.
【００４６】（ロ）反発性 厚さ１０ｍｍのウレタンエステル系発泡体（発泡倍率３
０倍）に、上記両面粘着テープを常温で２ｋｇゴムロー
ラー２往復で加圧貼付した後、２０ｍｍ×５０ｍｍの試
験片をＳＵＳ板に上面２０ｍｍ、下面３０ｍｍとなるよ
うに折り返して貼付した。上面２０ｍｍ部分は２ｋｇゴ
ムローラーを２往復して圧着した。その後、７０℃で２
４時間放置した後、上面での発泡体の浮き上がり具合を
観察し、下記の通り評価した。 ○・・・浮き上がりは見られなかった △・・・若干の浮き上がりが見られた ×・・・明らかに浮き上がりが見られた(B) Resilience A urethane ester foam having a thickness of 10 mm (expansion ratio 3
(0x), the above double-sided pressure-sensitive adhesive tape was pressure-applied with two reciprocations of 2 kg rubber roller at room temperature, and then a 20 mm x 50 mm test piece was folded and applied to the SUS plate so that the upper surface was 20 mm and the lower surface was 30 mm. The upper surface of 20 mm was pressure-bonded by reciprocating a 2 kg rubber roller two times. Then, at 70 ° C, 2
After standing for 4 hours, the degree of lifting of the foam on the upper surface was observed and evaluated as follows. ○ ・ ・ ・ No lifting was observed △ ・ ・ ・ Slight lifting was observed × ・ ・ ・ Lift was clearly observed
【００４７】実施例２ ［粘着剤組成物の調製］コンデンサー、撹拌機及び温度
計付きのフラスコに、２−エチルヘキシルアクリレート
（ａ１）７０．９部、ｎ−ブチルアクリレート（ａ１）
２１部、アクリル酸（ａ２）４部、２−ヒドロキシエチ
ルメタクリレート（ａ３）０．１部、酢酸ビニル（ａ
４）４部、酢酸エチル４１部、アゾビスイソブチロニト
リル（ＡＩＢＮ）０．１部を仕込み、９０℃に加温して
重合させ、重合途中にトルエン２０部にＡＩＢＮ０．１
部を溶解させた重合触媒液を逐次追加しながら７時間重
合させた後、重量平均分子量が６２万のアクリル系共重
合体（Ａ−２）溶液（樹脂分４５％）を得た。Example 2 [Preparation of pressure-sensitive adhesive composition] In a flask equipped with a condenser, a stirrer and a thermometer, 70.9 parts of 2-ethylhexyl acrylate (a1) and n-butyl acrylate (a1) were added.
21 parts, acrylic acid (a2) 4 parts, 2-hydroxyethyl methacrylate (a3) 0.1 part, vinyl acetate (a
4) 4 parts, 41 parts of ethyl acetate and 0.1 part of azobisisobutyronitrile (AIBN) were charged, heated to 90 ° C. and polymerized.
After polymerization was performed for 7 hours while sequentially adding the polymerization catalyst solution in which the parts were dissolved, an acrylic copolymer (A-2) solution (resin content: 45%) having a weight average molecular weight of 620,000 was obtained.
【００４８】得られたアクリル系共重合体（Ａ−２）溶
液（樹脂分４５％）２２２部（樹脂分として１００
部）、エポキシ基含有化合物（Ｂ）としてグリセリンジ
グリシジルエーテル０．３部、粘着付与剤（Ｃ）として
軟化点８５℃のテルペンフェノール系樹脂（ｃ１）１２
部、軟化点１３５℃の重合ロジンエステル（ｃ２）１８
部、架橋剤（Ｄ）としてイソシアネート系架橋剤（日本
ポリウレタン工業社製、「コロネートＬ−５５Ｅ」）
１．２部及び塩素化化合物（Ｅ）として塩素化ポリプロ
ピレン３部、トルエン４１部を混合撹拌して、本発明の
粘着剤組成物溶液（樹脂分４５％）を得た。得られた粘
着剤組成物について、実施例１と同様に両面粘着テープ
を調製して、評価を行った。222 parts of the obtained acrylic copolymer (A-2) solution (resin content 45%) (100 parts as resin content)
Parts), 0.3 parts of glycerin diglycidyl ether as the epoxy group-containing compound (B), and a terpene phenolic resin (c1) 12 having a softening point of 85 ° C. as the tackifier (C) 12
Part, polymerized rosin ester (c2) 18 having a softening point of 135 ° C.
Part, isocyanate-based crosslinking agent (“Coronate L-55E” manufactured by Nippon Polyurethane Industry Co., Ltd.) as crosslinking agent (D)
1.2 parts, 3 parts of chlorinated polypropylene as the chlorinated compound (E), and 41 parts of toluene were mixed and stirred to obtain a pressure-sensitive adhesive composition solution of the present invention (resin content: 45%). About the obtained pressure-sensitive adhesive composition, a double-sided pressure-sensitive adhesive tape was prepared in the same manner as in Example 1 and evaluated.
【００４９】実施例３ ［粘着剤組成物の調製］実施例１で用いたアクリル系共
重合体（Ａ−１）溶液（樹脂分４５％）２２２部（樹脂
分として１００部）、エポキシ基含有化合物（Ｂ）とし
てグリセリンジグリシジルエーテル０．４部、粘着付与
剤（Ｃ）として軟化点１２５℃のテルペンフェノール系
樹脂（ｃ１）８部、軟化点１２５℃の重合ロジンエステ
ル（ｃ２）２０部、架橋剤（Ｄ）としてイソシアネート
系架橋剤（日本ポリウレタン工業社製、「コロネートＬ
−５５Ｅ」）１．２部及び塩素化化合物（Ｅ）として塩
素化ポリプロピレン３部、トルエン３８．６部を混合撹
拌して、本発明の粘着剤組成物溶液（樹脂分４５％）を
得た。得られた粘着剤組成物について、実施例１と同様
に両面粘着テープを調製して、評価を行った。Example 3 [Preparation of PSA Composition] 222 parts (resin content: 100 parts) of the acrylic copolymer (A-1) solution (resin content: 45%) used in Example 1, containing an epoxy group 0.4 parts of glycerin diglycidyl ether as compound (B), 8 parts of terpene phenolic resin (c1) having a softening point of 125 ° C. as a tackifier (C), 20 parts of polymerized rosin ester (c2) having a softening point of 125 ° C. As a crosslinking agent (D), an isocyanate-based crosslinking agent ("Coronate L" manufactured by Nippon Polyurethane Industry Co., Ltd.)
-55E "), 1.2 parts of chlorinated polypropylene (3 parts) and 38.6 parts of toluene as a chlorinated compound (E) were mixed and stirred to obtain a pressure-sensitive adhesive composition solution of the present invention (resin content: 45%). . About the obtained pressure-sensitive adhesive composition, a double-sided pressure-sensitive adhesive tape was prepared in the same manner as in Example 1 and evaluated.
【００５０】実施例４ 実施例１において、粘着付与剤（Ｃ）として軟化点１２
５℃のテルペンフェノール系樹脂（ｃ１）１８部を用い
た以外は同様に行い、本発明の粘着剤組成物溶液（樹脂
分４５％）を得た。得られた粘着剤組成物について、実
施例１と同様に両面粘着テープを調製して、評価を行っ
た。Example 4 In Example 1, the tackifier (C) had a softening point of 12
A pressure-sensitive adhesive composition solution of the present invention (resin content 45%) was obtained in the same manner except that 18 parts of a terpene phenolic resin (c1) at 5 ° C was used. About the obtained pressure-sensitive adhesive composition, a double-sided pressure-sensitive adhesive tape was prepared in the same manner as in Example 1 and evaluated.
【００５１】実施例５ 実施例１において、粘着付与剤（Ｃ）として軟化点１２
５℃の重合ロジンエステル（ｃ２）２５部を用いた以外
は同様に行い、本発明の粘着剤組成物溶液（樹脂分４５
％）を得た。得られた粘着剤組成物について、実施例１
と同様に両面粘着テープを調製して、評価を行った。Example 5 In Example 1, the tackifier (C) had a softening point of 12
The same procedure was carried out except that 25 parts of the polymerized rosin ester (c2) at 5 ° C. was used.
%). About the obtained pressure-sensitive adhesive composition, Example 1
A double-sided pressure-sensitive adhesive tape was prepared and evaluated in the same manner as in the above.
【００５２】実施例６ 実施例１において、塩素化ポリオレフィン（Ｅ）を用い
なかった以外は同様に行い、本発明の粘着剤組成物溶液
（樹脂分４５％）を得た。得られた粘着剤組成物につい
て、実施例１と同様に両面粘着テープを調製して、評価
を行った。Example 6 The procedure of Example 1 was repeated, except that the chlorinated polyolefin (E) was not used, to obtain a pressure-sensitive adhesive composition solution of the present invention (resin content: 45%). About the obtained pressure-sensitive adhesive composition, a double-sided pressure-sensitive adhesive tape was prepared in the same manner as in Example 1 and evaluated.
【００５３】比較例１ 実施例１において、アクリル系共重合体（Ａ）として下
記の如きアクリル系共重合体（Ａ−３）を用いた以外は
同様に行い、粘着剤組成物溶液（樹脂分４５％）を得
た。得られた粘着剤組成物について、実施例１と同様に
両面粘着テープを調製して、評価を行った。Comparative Example 1 A pressure-sensitive adhesive composition solution (resin content) was prepared in the same manner as in Example 1, except that the following acrylic copolymer (A-3) was used as the acrylic copolymer (A). 45%). About the obtained pressure-sensitive adhesive composition, a double-sided pressure-sensitive adhesive tape was prepared in the same manner as in Example 1 and evaluated.
【００５４】［アクリル系共重合体（Ａ−３）］コンデ
ンサー、撹拌機及び温度計付きのフラスコに、ｎ−ブチ
ルアクリレート（ａ１）９０部、２−ヒドロキシエチル
メタクリレート（ａ３）５部、酢酸ビニル（ａ４）５
部、酢酸エチル４１部、アゾビスイソブチロニトリル
（ＡＩＢＮ）０．１部を仕込み、９０℃に加温して重合
させ、重合途中にトルエン１０部にＡＩＢＮ０．１部を
溶解させた重合触媒液を逐次追加しながら７時間重合さ
せた後、重量平均分子量が６０万のアクリル系共重合体
（Ａ−３）溶液（樹脂分４５％）を得た。[Acrylic copolymer (A-3)] In a flask equipped with a condenser, stirrer and thermometer, 90 parts of n-butyl acrylate (a1), 5 parts of 2-hydroxyethyl methacrylate (a3), vinyl acetate (A4) 5
Parts, 41 parts of ethyl acetate, and 0.1 part of azobisisobutyronitrile (AIBN) were charged, heated to 90 ° C. and polymerized, and 0.1 part of AIBN was dissolved in 10 parts of toluene during the polymerization. After polymerizing for 7 hours while sequentially adding the liquid, an acrylic copolymer (A-3) solution (resin content: 45%) having a weight average molecular weight of 600,000 was obtained.
【００５５】比較例２ 実施例１において、アクリル系共重合体（Ａ）として下
記の如きアクリル系共重合体（Ａ−４）を用いた以外は
同様に行い、粘着剤組成物溶液（樹脂分４５％）を得
た。得られた粘着剤組成物について、実施例１と同様に
両面粘着テープを調製して、評価を行った。Comparative Example 2 The procedure of Example 1 was repeated, except that the following acrylic copolymer (A-4) was used as the acrylic copolymer (A). 45%). About the obtained pressure-sensitive adhesive composition, a double-sided pressure-sensitive adhesive tape was prepared in the same manner as in Example 1 and evaluated.
【００５６】［アクリル系共重合体（Ａ−４）］コンデ
ンサー、撹拌機及び温度計付きのフラスコに、２−エチ
ルヘキシルアクリレート（ａ１）８８部、アクリル酸
（ａ２）２部、酢酸ビニル（ａ４）１０部、酢酸エチル
４１部、アゾビスイソブチロニトリル（ＡＩＢＮ）０．
１部を仕込み、９０℃に加温して重合させ、重合途中に
トルエン１０部にＡＩＢＮ０．１部を溶解させた重合触
媒液を逐次追加しながら７時間重合させた後、重量平均
分子量が６５万のアクリル系共重合体（Ａ−４）溶液
（樹脂分４５％）を得た。[Acrylic copolymer (A-4)] In a flask equipped with a condenser, a stirrer and a thermometer, 88 parts of 2-ethylhexyl acrylate (a1), 2 parts of acrylic acid (a2), and vinyl acetate (a4) 10 parts, ethyl acetate 41 parts, azobisisobutyronitrile (AIBN) 0.
One part was charged and heated to 90 ° C. for polymerization. During the polymerization, polymerization was carried out for 7 hours while a polymerization catalyst solution obtained by dissolving 0.1 part of AIBN in 10 parts of toluene was added successively, and the weight average molecular weight was 65%. Ten thousand acrylic copolymer (A-4) solutions (resin content 45%) were obtained.
【００５７】比較例３ 実施例１において、エポキシ基含有化合物（Ｂ）として
のグリセリンジグリシジルエーテルを用いなかった以外
は同様に行い、粘着剤組成物溶液（樹脂分４５％）を得
た。得られた粘着剤組成物について、実施例１と同様に
両面粘着テープを調製して、評価を行った。Comparative Example 3 A pressure-sensitive adhesive composition solution (resin content 45%) was obtained in the same manner as in Example 1, except that glycerin diglycidyl ether was not used as the epoxy group-containing compound (B). About the obtained pressure-sensitive adhesive composition, a double-sided pressure-sensitive adhesive tape was prepared in the same manner as in Example 1 and evaluated.
【００５８】比較例４ 実施例１において、粘着付与剤（Ｃ）を用いなかった以
外は同様に行い、粘着剤組成物溶液（樹脂分４５％）を
得た。得られた粘着剤組成物について、実施例１と同様
に両面粘着テープを調製して、評価を行った。実施例及
び比較例の評価結果を表１及び２に示す。Comparative Example 4 An adhesive composition solution (resin content: 45%) was obtained in the same manner as in Example 1, except that the tackifier (C) was not used. About the obtained pressure-sensitive adhesive composition, a double-sided pressure-sensitive adhesive tape was prepared in the same manner as in Example 1 and evaluated. Tables 1 and 2 show the evaluation results of the examples and comparative examples.
【００５９】 〔表１〕 初期粘着力(g/25mm) 再剥離性 定荷重剥離 実施例１ 2800 1800 2300 2100 ○ ○ ○ ○ ○ 〃 ２ 2850 1780 2400 2200 ○ ○ ○ ○ ○ 〃 ３ 2970 1880 2350 2100 ○ ○ ○ ○ ○ 〃 ４ 2400 1750 2200 2000 ○ ○ ○ ○ ○ 〃 ５ 2500 1690 2300 1900 ○ ○ ○ ○ ○ 〃 ６ 2700 1400 2100 1900 ○ ○ ○ ○ ○ 比較例１ 1300 1000 980 1000 △ ○ △ △ △ 〃 ２ 2000 1300 1000 1400 △ △ △ △ △ 〃 ３ 2400 1250 1700 1350 × △ △ △ ○ 〃 ４ 2000 1000 1200 1200 △ △ △ △ △ 注）はＳＵＳ板、はポリプロピレン板、はＡＢＳ板、は塩化ビニル板で ある。[Table 1]Initial adhesive strength (g / 25mm) Removability Constant load peeling Example 1 2800 1800 2300 2100 ○ ○ 〃 ○ 〃 2 2850 1780 2400 2200 ○ ○ ○ ○ ３ 3 2970 1880 2350 2100 ○ ○ ○ ○ 〃 ４ 4 2400 1750 2200 2000 ○ ○ ○ ○ 〃 ５ 5 2500 1690 2300 1900 ○ ○ ○ ○ ○６ 6 2700 1400 2100 1900 ○ ○ ○ ○ ○ Comparative Example 1 1300 1000 980 1000 △ ○ △ △ △ 〃 2 2000 1300 1000 1400 △ △ △ △ △ ３ 3 2400 1250 1700 1350 × △ △ △ ○４ 4 2000 1000 1200 1200 △ △ △ △ △ Note) is a SUS plate, is a polypropylene plate, is an ABS plate, and is a vinyl chloride plate.
【００６０】 [0060]
【００６１】[0061]
【発明の効果】本発明の粘着剤組成物は、カルボキシル
基及びヒドロキシル基を含有するアクリル系共重合体
（Ａ）、エポキシ基を少なくとも２個以上有するエポキ
シ基含有化合物（Ｂ）、テルペンフェノール系樹脂（ｃ
１）及び／又は重合ロジン（ｃ２）を含む粘着付与剤
（Ｃ）及び架橋剤（Ｄ）からなるため、各種リサイクル
可能な部品（被着体）に対して初期粘着力が極めて高
く、しかも被着体から剥離する際に粘着剤組成物の糊残
りのないといった再剥離性にも優れ、更にポリウレタン
系発泡体、ポリスチレン系発泡体、ＡＢＳ系発泡体、ゴ
ム系（クロロプレンゴム、ＥＰＤＭ等）発泡体、塩化ビ
ニル系発泡体、ポリエチレン系発泡体、ポリプロピレン
系発泡体、フェノール系発泡体、ユリア系発泡体等の発
泡体への接着性にも優れた効果を示すものであり、かか
る粘着剤組成物を基材の少なくとも片面に設けることで
リサイクル部品用粘着テープとして、特には不織布を中
芯として該不織布の両面に設けることでリサイクル部品
用両面粘着テープとして非常に有用である。The pressure-sensitive adhesive composition of the present invention comprises an acrylic copolymer containing a carboxyl group and a hydroxyl group (A), an epoxy group-containing compound having at least two epoxy groups (B), and a terpene phenolic compound. Resin (c
1) Since it is composed of a tackifier (C) and / or a cross-linking agent (D) containing a polymerized rosin (c2), the initial adhesive strength to various recyclable parts (adherends) is extremely high, and It has excellent removability, such as no adhesive residue when peeled from the body, and polyurethane foam, polystyrene foam, ABS foam, and rubber foam (chloroprene rubber, EPDM, etc.). It has excellent adhesiveness to foams such as foam, vinyl chloride foam, polyethylene foam, polypropylene foam, phenol foam, urea foam, etc. A product is provided on at least one side of a substrate to form a pressure-sensitive adhesive tape for recycled parts, and in particular, a double-sided pressure-sensitive adhesive tape for recycled parts by providing a nonwoven fabric as a core on both sides of the nonwoven fabric. It is very useful.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4J004 AA02 AA04 AA06 AA10 AA13 AB01 CA02 CA03 CA04 CA06 CB01 EA05 EA06 FA06 FA08 4J040 BA172 BA202 DA182 DF001 DF041 DN032 EC002 GA05 GA07 JA09 KA16 KA17 KA26 LA06 MA02 MA10 NA06 NA10 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4J004 AA02 AA04 AA06 AA10 AA13 AB01 CA02 CA03 CA04 CA06 CB01 EA05 EA06 FA06 FA08 4J040 BA172 BA202 DA182 DF001 DF041 DN032 EC002 GA05 GA07 JA09 KA16 KA17 KA26 LA10 MA10 NA10
Claims (8)
有するアクリル系共重合体（Ａ）、エポキシ基を少なく
とも２個以上有するエポキシ基含有化合物（Ｂ）、テル
ペンフェノール系樹脂（ｃ１）及び／又は重合ロジンエ
ステル（ｃ２）を含む粘着付与剤（Ｃ）及び架橋剤
（Ｄ）からなることを特徴とする粘着剤組成物。1. An acrylic copolymer (A) containing a carboxyl group and a hydroxyl group, an epoxy group-containing compound (B) having at least two epoxy groups, a terpene phenolic resin (c1) and / or a polymerized rosin A pressure-sensitive adhesive composition comprising a tackifier (C) containing an ester (c2) and a crosslinking agent (D).
酸エステル系モノマー（ａ１）５０〜９９重量％、カル
ボキシル基含有エチレン性不飽和モノマー（ａ２）０．
１〜１０重量％、ヒドロキシル基含有エチレン性不飽和
モノマー（ａ３）０．０５〜１重量％、その他のエチレ
ン性不飽和モノマー（ａ４）３９重量％以下を共重合成
分とするアクリル系共重合体であることを特徴とする請
求項１記載の粘着剤組成物。2. An acrylic copolymer (A) comprising 50 to 99% by weight of an acrylate monomer (a1) and a carboxyl group-containing ethylenically unsaturated monomer (a2) having a content of 0.5 to 99% by weight.
Acrylic copolymer containing 1 to 10% by weight, 0.05 to 1% by weight of a hydroxyl group-containing ethylenically unsaturated monomer (a3) and 39% by weight or less of another ethylenically unsaturated monomer (a4) The pressure-sensitive adhesive composition according to claim 1, wherein
に対して、エポキシ基を少なくとも２個以上有するエポ
キシ基含有化合物（Ｂ）を０．０５〜２０重量部、粘着
付与剤（Ｃ）を４〜５０重量部含有することを特徴とす
る請求項１又は２記載の粘着剤組成物。3. An epoxy group-containing compound (B) having at least two epoxy groups is present in an amount of 0.05 to 20 parts by weight and a tackifier (C) based on 100 parts by weight of the acrylic copolymer (A). 3 to 50 parts by weight of the pressure-sensitive adhesive composition according to claim 1.
エポキシ基含有化合物（Ｂ）と粘着付与剤（Ｃ）の含有
割合が、粘着付与剤（Ｃ）１００重量部に対してエポキ
シ基含有化合物（Ｂ）が０．０５〜１０重量部であるこ
とを特徴とする請求項１〜３いずれか記載の粘着剤組成
物。4. The content ratio of the epoxy group-containing compound (B) having at least two epoxy groups and the tackifier (C) is based on 100 parts by weight of the tackifier (C). ) Is 0.05 to 10 parts by weight, the pressure-sensitive adhesive composition according to any one of claims 1 to 3, wherein
エポキシ基含有化合物（Ｂ）が水酸基をも有する化合物
であることを特徴とする請求項１〜４いずれか記載の粘
着剤組成物。5. The pressure-sensitive adhesive composition according to claim 1, wherein the epoxy group-containing compound (B) having at least two epoxy groups is a compound also having a hydroxyl group.
とを特徴とする請求項１〜５いずれか記載の粘着剤組成
物。6. The pressure-sensitive adhesive composition according to claim 1, further comprising a chlorinated compound (E).
物を基材の少なくとも片面に設けてなることを特徴とす
るリサイクル部品用粘着テープ。7. A pressure-sensitive adhesive tape for recycled parts, wherein the pressure-sensitive adhesive composition according to claim 1 is provided on at least one surface of a substrate.
ることを特徴とする請求項７記載のリサイクル部品用粘
着テープ。8. The adhesive tape for recycled parts according to claim 7, wherein the substrate is a double-sided adhesive tape having a nonwoven fabric core.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000322266A JP4707816B2 (en) | 2000-10-23 | 2000-10-23 | Adhesive composition and adhesive tape for recycled parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000322266A JP4707816B2 (en) | 2000-10-23 | 2000-10-23 | Adhesive composition and adhesive tape for recycled parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002129122A true JP2002129122A (en) | 2002-05-09 |
| JP4707816B2 JP4707816B2 (en) | 2011-06-22 |
Family
ID=18800173
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000322266A Expired - Lifetime JP4707816B2 (en) | 2000-10-23 | 2000-10-23 | Adhesive composition and adhesive tape for recycled parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4707816B2 (en) |
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|---|---|---|---|---|
| US7312265B2 (en) | 2004-03-17 | 2007-12-25 | Nitto Denko Corporation | Acrylic pressure sensitive adhesive composition and pressure sensitive adhesive tape |
| JP2008280439A (en) * | 2007-05-11 | 2008-11-20 | Nitto Denko Corp | Double-sided pressure-sensitive adhesive sheet |
| JP2013151640A (en) * | 2011-12-27 | 2013-08-08 | Toyo Ink Sc Holdings Co Ltd | Adhesive for foam |
| JP2014058650A (en) * | 2012-09-19 | 2014-04-03 | Nippon Carbide Ind Co Inc | Adhesive composition and retroreflective sheet |
| JP2014221864A (en) * | 2013-05-13 | 2014-11-27 | 積水化学工業株式会社 | Adhesive sheet for electronic apparatus |
| JP2015042729A (en) * | 2013-07-26 | 2015-03-05 | 積水化学工業株式会社 | Pressure-sensitive adhesive sheet for electronic apparatus |
| WO2015151954A1 (en) * | 2014-04-03 | 2015-10-08 | 積水化学工業株式会社 | Double-sided adhesive tape |
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| JP2008280439A (en) * | 2007-05-11 | 2008-11-20 | Nitto Denko Corp | Double-sided pressure-sensitive adhesive sheet |
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| JP2014058650A (en) * | 2012-09-19 | 2014-04-03 | Nippon Carbide Ind Co Inc | Adhesive composition and retroreflective sheet |
| JP2014221864A (en) * | 2013-05-13 | 2014-11-27 | 積水化学工業株式会社 | Adhesive sheet for electronic apparatus |
| JP2015042729A (en) * | 2013-07-26 | 2015-03-05 | 積水化学工業株式会社 | Pressure-sensitive adhesive sheet for electronic apparatus |
| JPWO2015041313A1 (en) * | 2013-09-20 | 2017-03-02 | 積水化学工業株式会社 | Double-sided adhesive tape for portable electronic devices |
| WO2015151954A1 (en) * | 2014-04-03 | 2015-10-08 | 積水化学工業株式会社 | Double-sided adhesive tape |
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| KR101880682B1 (en) * | 2017-12-19 | 2018-07-20 | 주식회사 자오 | Thermo-reversible adhesive composition and thermal responsive adhesive tape including the same |
| JP2018199827A (en) * | 2018-08-27 | 2018-12-20 | 積水化学工業株式会社 | Acryl adhesive and adhesive sheet for electronic apparatus |
| KR20210126708A (en) * | 2019-02-26 | 2021-10-20 | 애버리 데니슨 코포레이션 | PSA composition with high shear and peel properties |
| CN113710762A (en) * | 2019-02-26 | 2021-11-26 | 艾利丹尼森公司 | PSA compositions with high shear and peel properties |
| EP3931279A4 (en) * | 2019-02-26 | 2022-10-05 | Avery Dennison Corporation | Psa composition having high shear and peel properties |
| KR102535958B1 (en) | 2019-02-26 | 2023-05-26 | 애버리 데니슨 코포레이션 | PSA composition with high shear and peel properties |
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