JPH03111472A - Aqueous emulsion type pressure-sensitive adhesive composition - Google Patents
Aqueous emulsion type pressure-sensitive adhesive compositionInfo
- Publication number
- JPH03111472A JPH03111472A JP25096289A JP25096289A JPH03111472A JP H03111472 A JPH03111472 A JP H03111472A JP 25096289 A JP25096289 A JP 25096289A JP 25096289 A JP25096289 A JP 25096289A JP H03111472 A JPH03111472 A JP H03111472A
- Authority
- JP
- Japan
- Prior art keywords
- sensitive adhesive
- tackifier
- emulsion type
- emulsion
- type pressure
- 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
- 239000000839 emulsion Substances 0.000 title claims abstract description 30
- 239000004820 Pressure-sensitive adhesive Substances 0.000 title claims abstract description 16
- 239000000203 mixture Substances 0.000 title claims description 12
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 15
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 15
- 239000000853 adhesive Substances 0.000 abstract description 14
- 230000001070 adhesive effect Effects 0.000 abstract description 14
- 239000007787 solid Substances 0.000 abstract description 11
- 239000011347 resin Substances 0.000 abstract description 8
- 229920005989 resin Polymers 0.000 abstract description 8
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 abstract description 4
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 abstract description 4
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 abstract description 4
- -1 alkyl methacrylate Chemical compound 0.000 abstract description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 abstract description 2
- 150000003505 terpenes Chemical class 0.000 abstract description 2
- 235000007586 terpenes Nutrition 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract 3
- 239000004615 ingredient Substances 0.000 abstract 2
- 239000002075 main ingredient Substances 0.000 abstract 2
- 125000005250 alkyl acrylate group Chemical group 0.000 abstract 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 11
- 239000002904 solvent Substances 0.000 description 6
- 125000000217 alkyl group Chemical group 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 2
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 2
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002998 adhesive polymer Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229940065472 octyl acrylate Drugs 0.000 description 1
- ANISOHQJBAQUQP-UHFFFAOYSA-N octyl prop-2-enoate Chemical compound CCCCCCCCOC(=O)C=C ANISOHQJBAQUQP-UHFFFAOYSA-N 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、特に低温での接着強度が改善された、水性エ
マルジョン型感圧性粘着剤組成物に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an aqueous emulsion type pressure-sensitive adhesive composition that has improved adhesive strength, especially at low temperatures.
（従来の技術）
アクリル酸ブチルやアクリル酸２−エチルヘキシルなど
の（メタ）アクリル酸アルキルエステルを主成分とする
アクリル系樹脂を用いたアクリル系感圧性粘着剤は、接
着性能に優れ、粘着テープもしくはシートに広く使用さ
れている。(Prior art) Acrylic pressure-sensitive adhesives using acrylic resins whose main component is alkyl (meth)acrylates such as butyl acrylate and 2-ethylhexyl acrylate have excellent adhesive performance and can be used with adhesive tapes or Widely used for sheets.
この種のアクリル系感圧性粘着剤は、一般に溶剤型が多
用されているが、溶剤による大気汚染、安全衛生、溶剤
回収などの問題がある。水性エマルジョン型のアクリル
系感圧性粘着剤も一部使用されている。この種の水性エ
マルジョン型には、一般に軟化点が１００℃前後の粘着
付与剤が配合されている。This type of acrylic pressure-sensitive adhesive is generally a solvent type, but there are problems such as air pollution caused by the solvent, safety and hygiene, and solvent recovery. Water-based emulsion type acrylic pressure-sensitive adhesives are also used in some cases. This type of aqueous emulsion type generally contains a tackifier having a softening point of around 100°C.
（発明が解決しようとする課題）
このような水性エマルジョン型は溶剤型のような問題は
ないが、充分な接着強度が得られず、特に低温での接着
強度が低下し剥がれ易いという欠点がある。(Problems to be Solved by the Invention) Although such water-based emulsion type does not have the problems of solvent type, it has the disadvantage that sufficient adhesive strength cannot be obtained, and adhesive strength decreases particularly at low temperatures, making it easy to peel off. .
本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、特に低温での接着強度が改善された、水
性エマルジョン型感圧性粘着剤組成物を提供することに
ある。The present invention is intended to solve the above-mentioned problems, and its purpose is to provide an aqueous emulsion type pressure-sensitive adhesive composition that has improved adhesive strength, especially at low temperatures.
（課題を解決するための手段）
本発明の水性エマルジョン型感圧性粘着剤組成物は、（
メタ）アクリル酸アルキルエステルを主成分とするアク
リル系樹脂水性エマルジョンに、軟化点が５０℃以下の
粘着付与剤を配合してなり、そのことにより上記の目的
が達成される。(Means for solving the problems) The aqueous emulsion type pressure sensitive adhesive composition of the present invention has (
The above object is achieved by blending a tackifier with a softening point of 50° C. or lower into an aqueous acrylic resin emulsion containing an alkyl meth)acrylate as a main component.
本発明において、アクリル系樹脂水性エマルジョンの主
成分となる（メタ）アクリル酸アルキルエステルとして
は、アクリル酸アルキルエステルでは一般にアルキル基
の炭素数が４〜９、メタクリル酸アルキルエステルでは
一般にアルキル基の炭素数が１０〜１２のものが用いら
れる。In the present invention, as the (meth)acrylic acid alkyl ester which is the main component of the acrylic resin aqueous emulsion, acrylic acid alkyl esters generally have 4 to 9 carbon atoms in the alkyl group, and methacrylic acid alkyl esters generally have carbon atoms in the alkyl group. Those having a number of 10 to 12 are used.
特に、アクリル酸２−エチルヘキシル、アクリル酸ブチ
ル、アクリル酸オクチルなどガラス転移温度が比較的低
い（約−５０℃以下）粘着性のポリマーを形成し得る（
メタ）アクリル酸アルキルエステルを主成分とし、これ
に凝集力を向上させる成分として、アクリル酸、メタク
リル酸、無水マレイン酸、メタクリル酸ヒドロキシエチ
ル、アクリル酸メチル、アクリル酸エチル、酢酸ビニル
、アクリルアミド、アクリロニトリルなどガラス転移温
度が比較的高い（約Ｏ″Ｃ以上）のポリマーを形成し得
る重合性モノマーを共重合した共重合体からなるアクリ
ル系樹脂水性エマルジョンが好適に用いられる。In particular, adhesive polymers such as 2-ethylhexyl acrylate, butyl acrylate, and octyl acrylate can be formed with a relatively low glass transition temperature (approximately -50°C or lower).
Contains meth)acrylic acid alkyl ester as the main component, and contains acrylic acid, methacrylic acid, maleic anhydride, hydroxyethyl methacrylate, methyl acrylate, ethyl acrylate, vinyl acetate, acrylamide, and acrylonitrile as components to improve cohesion. An aqueous acrylic resin emulsion consisting of a copolymer copolymerized with a polymerizable monomer capable of forming a polymer having a relatively high glass transition temperature (about O''C or higher) is preferably used.
かかるアクリル系樹脂水性エマルジョンに配合される粘
着付与剤としては、一般に感圧性粘着剤に用いられてい
るロジン系樹脂、テルペン系樹脂、石油樹脂等で、その
軟化点が５０℃以下好ましくは３０℃以下さらに好まし
くは２５℃前後のものが用いられる。かかる粘着付与剤
は溶液状にしてアクリル系樹脂水性エマルジョンに混合
され得るが、予めエマルジョンにしておいてアクリル系
樹脂水性エマルジョンに混合するのが好ましい。The tackifier to be added to the aqueous acrylic resin emulsion is a rosin resin, a terpene resin, a petroleum resin, etc., which are generally used in pressure sensitive adhesives, and have a softening point of 50°C or lower, preferably 30°C. Below, a temperature of around 25° C. is more preferably used. Such a tackifier can be made into a solution and mixed into the aqueous acrylic resin emulsion, but it is preferable to form an emulsion in advance and mix it into the aqueous acrylic resin emulsion.
そして、粘着付与剤の配合量はアクリル系樹脂水性エマ
ルジョンの固形分１００重量部に対して、粘着付与剤の
固形分が３〜３５重量部の範囲となるように配合するの
が好ましい。軟化点が５０℃よりも高くなったり、配合
量が３重量部より少なくなると、低温での接着強度の改
善効果が次第に小さくなる。また、配合量が３５重量部
よりも多くなると、粘着性能が次第に低下してい（。The amount of the tackifier to be blended is preferably such that the solid content of the tackifier is in the range of 3 to 35 parts by weight per 100 parts by weight of the solid content of the aqueous acrylic resin emulsion. When the softening point becomes higher than 50°C or when the blending amount becomes less than 3 parts by weight, the effect of improving adhesive strength at low temperatures gradually decreases. In addition, when the blending amount exceeds 35 parts by weight, the adhesive performance gradually decreases (.
なお、上記の配合物には、必要に応じて可塑剤、老化防
止剤、充填剤、着色剤など従来の感圧性粘着剤に用いら
れている添加剤を配合することができる。In addition, additives used in conventional pressure-sensitive adhesives, such as plasticizers, anti-aging agents, fillers, and colorants, can be added to the above-mentioned formulation, if necessary.
（作用）
本発明によれば、（メタ）アクリル酸アルキルエステル
を主成分とするアクリル系樹脂水性エマルジョンを使用
するので、火災や環境の悪化がない。そして、これに軟
化点が５０℃以下の粘着付与剤を配合することにより、
特に低温下においても被着体面への濡れがよくなり接触
面積が増大するので、接着強度特に低温での接着強度が
向上する。(Function) According to the present invention, since an aqueous acrylic resin emulsion containing (meth)acrylic acid alkyl ester as a main component is used, there will be no fire or environmental deterioration. By adding a tackifier with a softening point of 50°C or less to this,
Particularly, even at low temperatures, wetting to the surface of the adherend is improved and the contact area is increased, so that the adhesive strength, especially the adhesive strength at low temperatures, is improved.
（実施例） 以下、本発明の実施例及び比較例を示す。(Example) Examples and comparative examples of the present invention are shown below.
１崖別ユ
常法の乳化重合によりアクリル系樹脂水性エマルジョン
を製造した。このアクリル系樹脂水性エマルジョンの樹
脂分（固形分）は６０重量％で、樹脂分はアクリル酸２
−エチルヘキシル成分８０．５重量％とメタクリル酸メ
チル成分１５．０重量％とメタクリル酸ヒドロキシエチ
ル成分３．０重量％とアクリル酸１．５重量％とからな
り、粘度は６．０００ｃｐｓ （３０℃）であった。An aqueous acrylic resin emulsion was produced by emulsion polymerization using a conventional method. The resin content (solid content) of this acrylic resin aqueous emulsion is 60% by weight, and the resin content is acrylic acid 2
-Contains 80.5% by weight of ethylhexyl component, 15.0% by weight of methyl methacrylate component, 3.0% by weight of hydroxyethyl methacrylate component, and 1.5% by weight of acrylic acid, and has a viscosity of 6.000 cps (30°C) Met.
上記のアクリル系樹脂水性エマルジョン１００重量部（
固形分換算）に、粘着付与剤として、軟化点２７℃のト
ール油ロジンからなり固形分が５５重量％のエマルジョ
ン（アクアタック５５２７、米国アリシナケミカル社製
）を５重量部（固形分換算）室温で混合し、水性エマル
ジョン型感圧性粘着剤組成物を製造した。100 parts by weight of the above acrylic resin aqueous emulsion (
5 parts by weight (in terms of solid content) of an emulsion made of tall oil rosin with a softening point of 27°C and having a solid content of 55% by weight (Aquatac 5527, manufactured by Alisina Chemical Co., USA) as a tackifier (in terms of solid content) The mixtures were mixed at room temperature to produce an aqueous emulsion type pressure sensitive adhesive composition.
この水性エマルジョン型感圧性粘着剤組成物を厚さ約８
０μの上質紙からなる基材に塗布し、１２０℃で３分間
加熱乾燥して試験片を作成した。This aqueous emulsion type pressure sensitive adhesive composition was coated to a thickness of about 8 cm.
It was coated on a base material made of 0 μm high-quality paper and dried by heating at 120° C. for 3 minutes to prepare a test piece.
この試験片を２０℃、５℃１０℃の測定環境でダンボー
ルに手で軽（圧着し、３０秒後に約６００ ｍｍ１分の
速度で引き剥がして、接着性能を評価した。This test piece was lightly pressure-bonded by hand to cardboard in a measurement environment of 20°C, 5°C and 10°C, and after 30 seconds, it was peeled off at a speed of about 600 mm/min to evaluate adhesive performance.
接着性能は、全接着面積に対するダンボール層の剥離し
た面積を百分率で示した。その結果をまとめて第１表に
示す。Adhesion performance was expressed as a percentage of the peeled area of the cardboard layer relative to the total adhesive area. The results are summarized in Table 1.
ユＪ１江λ
実施例１において、粘着付与剤の配合量を１０重量部に
変更したこと以外は、実施例１と同様に行った。その結
果をまとめて第１表に示す。Example 1 was carried out in the same manner as in Example 1, except that the amount of the tackifier was changed to 10 parts by weight. The results are summarized in Table 1.
ス遣韮１
実施例１において、粘着付与剤の配合量を１５重量部に
変更したこと以外は、実施例１と同様に行った。その結
果をまとめて第１表に示す。Sukiranai 1 The same procedure as in Example 1 was carried out except that the amount of tackifier was changed to 15 parts by weight. The results are summarized in Table 1.
且較貫↓
実施例１において、粘着付与剤を配合しなかったこと以
外は、実施例１と同様に行った。その結果をまとめて第
１表に示す。Comparison: Example 1 was carried out in the same manner as in Example 1, except that no tackifier was added. The results are summarized in Table 1.
且較貫１
実施例１において、粘着付与剤を軟化点１００℃のロジ
ン系樹脂からなり固形分が５０重量％のエマルジョン（
スーパーエステルＥ７２０、！用化学社製）に変更し、
この粘着付与剤を１０重量部（固形分換算）に変更した
こと以外は、実施例１と同様に行った。その結果をまと
めて第１表に示す。Comparison 1 In Example 1, the tackifier was an emulsion made of a rosin resin with a softening point of 100°C and a solid content of 50% by weight (
Super Ester E720! (manufactured by Yokagakusha),
The same procedure as in Example 1 was carried out except that the amount of this tackifier was changed to 10 parts by weight (in terms of solid content). The results are summarized in Table 1.
本固形分換算値
第１表
（発明の効果）
上述の通り、本発明の水性エマルジョン型アクリル系感
圧性粘着剤組成物は、溶剤による大気汚染、安全衛生、
溶剤回収などの問題がない。Solid Content Conversion Value Table 1 (Effects of the Invention) As mentioned above, the water-based emulsion type acrylic pressure-sensitive adhesive composition of the present invention is effective against air pollution caused by solvents, safety and health,
There are no problems such as solvent recovery.
しかも、従来の水性エマルジョン型アクリル系感圧性粘
着剤組成物に比べ、接着強度、特に低温での接着強度が
改善され、感圧性粘着テープ、シート、ラベル等に好適
に使用することができる。Furthermore, the adhesive strength, especially the adhesive strength at low temperatures, is improved compared to conventional aqueous emulsion type acrylic pressure-sensitive adhesive compositions, and it can be suitably used for pressure-sensitive adhesive tapes, sheets, labels, etc.
Claims (1)
るアクリル系樹脂水性エマルジョンに、軟化点が５０℃
以下の粘着付与剤を配合してなる水性エマルジョン型感
圧性粘着剤組成物。1. An aqueous acrylic resin emulsion containing (meth)acrylic acid alkyl ester as its main component has a softening point of 50°C.
An aqueous emulsion type pressure-sensitive adhesive composition containing the following tackifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25096289A JPH03111472A (en) | 1989-09-27 | 1989-09-27 | Aqueous emulsion type pressure-sensitive adhesive composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25096289A JPH03111472A (en) | 1989-09-27 | 1989-09-27 | Aqueous emulsion type pressure-sensitive adhesive composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03111472A true JPH03111472A (en) | 1991-05-13 |
Family
ID=17215608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25096289A Pending JPH03111472A (en) | 1989-09-27 | 1989-09-27 | Aqueous emulsion type pressure-sensitive adhesive composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03111472A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61275363A (en) * | 1985-03-25 | 1986-12-05 | エクソン ケミカル パテンツ インコ−ポレ−テツド | Adhesiveness imparting agent and its use in adhesive |
| JPS63241084A (en) * | 1987-03-27 | 1988-10-06 | Japan Synthetic Rubber Co Ltd | Emulsified pressure-sensitive adhesive |
-
1989
- 1989-09-27 JP JP25096289A patent/JPH03111472A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61275363A (en) * | 1985-03-25 | 1986-12-05 | エクソン ケミカル パテンツ インコ−ポレ−テツド | Adhesiveness imparting agent and its use in adhesive |
| JPS63241084A (en) * | 1987-03-27 | 1988-10-06 | Japan Synthetic Rubber Co Ltd | Emulsified pressure-sensitive adhesive |
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