JPH04178482A - Pressure-sensitive adhesive and surface-protective member using the same - Google Patents
Pressure-sensitive adhesive and surface-protective member using the sameInfo
- Publication number
- JPH04178482A JPH04178482A JP2304688A JP30468890A JPH04178482A JP H04178482 A JPH04178482 A JP H04178482A JP 2304688 A JP2304688 A JP 2304688A JP 30468890 A JP30468890 A JP 30468890A JP H04178482 A JPH04178482 A JP H04178482A
- Authority
- JP
- Japan
- Prior art keywords
- parts
- acrylic
- sensitive adhesive
- pressure
- adhesive
- 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
- 239000004820 Pressure-sensitive adhesive Substances 0.000 title claims description 40
- 229920006243 acrylic copolymer Polymers 0.000 claims abstract description 28
- 229920000058 polyacrylate Polymers 0.000 claims abstract description 23
- -1 acrylic ester Chemical class 0.000 claims abstract description 20
- 150000001875 compounds Chemical class 0.000 claims abstract description 17
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 12
- 230000001476 alcoholic effect Effects 0.000 claims abstract description 8
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 8
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 8
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 7
- 125000004432 carbon atom Chemical group C* 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 125000005396 acrylic acid ester group Chemical group 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 abstract description 15
- 230000001070 adhesive effect Effects 0.000 abstract description 15
- 239000002184 metal Substances 0.000 abstract description 7
- 229920001228 polyisocyanate Polymers 0.000 abstract description 7
- 239000005056 polyisocyanate Substances 0.000 abstract description 7
- 238000004132 cross linking Methods 0.000 abstract description 4
- 229920000877 Melamine resin Polymers 0.000 abstract description 3
- 239000004640 Melamine resin Substances 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 13
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- CUXGDKOCSSIRKK-UHFFFAOYSA-N 7-methyloctyl prop-2-enoate Chemical compound CC(C)CCCCCCOC(=O)C=C CUXGDKOCSSIRKK-UHFFFAOYSA-N 0.000 description 5
- 150000002148 esters Chemical class 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 2
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 2
- 239000004342 Benzoyl peroxide Substances 0.000 description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 2
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 2
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 1
- CFVWNXQPGQOHRJ-UHFFFAOYSA-N 2-methylpropyl prop-2-enoate Chemical compound CC(C)COC(=O)C=C CFVWNXQPGQOHRJ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- GMSCBRSQMRDRCD-UHFFFAOYSA-N dodecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCOC(=O)C(C)=C GMSCBRSQMRDRCD-UHFFFAOYSA-N 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 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、再剥離性と耐熱性に優れるアクリル系の感圧
接着剤、及びそれを用いてなる表面保護部材に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an acrylic pressure-sensitive adhesive having excellent removability and heat resistance, and a surface protection member using the same.
従来の技術
表面保護部材に用いる感圧接着剤に要求される性能には
、被着体例えば金属板、化粧板、プラスチック板、ガラ
ス板などに長期間接着した場合にも被着体側に移着しな
いこと、被着体に対する接着力の経時上昇が少な（て小
さい力で再剥離できること、及び金属板の場合には板金
加工時にも被着体制に移着しないことなどがある。Conventional technology The performance required of pressure-sensitive adhesives used for surface protection members includes the ability to transfer to the adherend even when adhered to the adherend for a long period of time, such as metal plates, decorative plates, plastic plates, glass plates, etc. The adhesion strength to the adherend does not increase over time (it can be re-peeled with a small force), and in the case of a metal plate, it does not transfer to the adherend structure even during sheet metal processing.
従来、表面保護部材に用いうるアクリル系感圧接着剤と
しては、アクリル酸系エステルと、カルボキシル基を有
する共重合性化合物、例えばアクリル酸やメタクリル酸
との共重合体を架橋剤で架橋処理したものが知られてい
た。用いられるアクリル酸系エステルは通常、炭素数７
以下の脂肪族基を有するものである。しかしながら、か
かるアクリル系感圧接着剤にあっては、長期間接着した
場合に被着体側へ移着し、また被着体に対する接着力の
経時上昇が大きい問題点があった。Conventionally, acrylic pressure-sensitive adhesives that can be used for surface protection members are made by crosslinking a copolymer of an acrylic acid ester and a copolymerizable compound having a carboxyl group, such as acrylic acid or methacrylic acid, with a crosslinking agent. Things were known. The acrylic ester used usually has 7 carbon atoms.
It has the following aliphatic group. However, such acrylic pressure-sensitive adhesives have the problem that they tend to migrate to the adherend when adhered for a long period of time, and the adhesive strength to the adherend increases significantly over time.
前記に鑑みて本発明者らが属するグループは、先に炭素
数が８〜ＩＯの脂肪族基を有するアクリル酸系エステル
と、アルコール性水酸基を有する共重合性化合物とを成
分とするアクリル系共重合体を架橋処理してなる感圧接
着剤を提案した（特開昭６３−２２５６７７号公報）。In view of the above, the group to which the present inventors belong is an acrylic copolymer comprising an acrylic ester having an aliphatic group having 8 to 10 carbon atoms and a copolymerizable compound having an alcoholic hydroxyl group. A pressure-sensitive adhesive made by crosslinking a polymer was proposed (Japanese Unexamined Patent Publication No. 63-225677).
発明が解決しようとする課題
しかし前記提案の感圧接着剤にあって、耐熱性に乏しい
場合のあることが判明した。すなわち、防眩や光拡散等
の目的で電子分野や光学分野等で用いられる表面に微細
な凹凸を有するプラスチック板、あるいはトリアセテー
ト板の如く表面張力が低くて表面が平滑なプラスチック
板の表面保護部材に使用した場合、加工時や保存時の加
熱で浮き等の剥離現象を生じる問題点があった。かかる
浮き等は異物の侵入原因や、エアー吸着等を不可能にす
る原因となる。Problems to be Solved by the Invention However, it has been found that the pressure-sensitive adhesive proposed above may have poor heat resistance. In other words, surface protection members for plastic plates with fine irregularities on the surface used in the electronic and optical fields for purposes such as anti-glare and light diffusion, or plastic plates with low surface tension and smooth surfaces such as triacetate plates. When used for this purpose, there was a problem in that peeling phenomena such as lifting occurred due to heating during processing and storage. Such floating causes the intrusion of foreign matter and makes air adsorption impossible.
従って本発明は、接着力の経時上昇が小さいことに加え
て、耐熱性にも優れる感圧接着剤の開発を課題とする。Therefore, an object of the present invention is to develop a pressure-sensitive adhesive that exhibits a small increase in adhesive strength over time and also has excellent heat resistance.
問題点を解決するための手段
本発明は、炭素数が８〜ＩＯの脂肪族基を有するアクリ
ル酸系エステルと、アルコール性水酸基を有する共重合
性化合物とを成分とするアクリル系共重合体１００重量
部に、アクリル酸系エステルと、カルボキシル基を有す
る共重合性化合物とを成分とするアクリル系ポリマー０
．１〜３重量部を配合して架橋剤で架橋処理してなり、
ゲル分が６０％以上であることを特徴とする感圧接着剤
、及び支持基材に、前記の感圧接着剤からなる層を設け
てなることを特徴とする表面保護部材を提供するもので
ある。Means for Solving the Problems The present invention provides an acrylic copolymer 100 comprising an acrylic ester having an aliphatic group having 8 to 10 carbon atoms and a copolymerizable compound having an alcoholic hydroxyl group. 0 parts by weight of an acrylic polymer containing an acrylic acid ester and a copolymerizable compound having a carboxyl group.
．． 1 to 3 parts by weight are blended and crosslinked with a crosslinking agent,
The present invention provides a pressure-sensitive adhesive characterized in that the gel content is 60% or more, and a surface protection member characterized in that a layer made of the pressure-sensitive adhesive is provided on a supporting base material. be.
作用
接着力やその経時上昇特性等の点よりアクリル系共重合
体として、炭素数が８〜１０の脂肪族基を有するアクリ
ル酸系エステルとアルコール性水酸基を有する共重合性
化合物とを組合わせて用いた場合にのみ、被着体に対し
て満足できる接着力を有し、かつ接着力の経時上昇が小
さい感圧接着剤が得られる。一方、前記のアクリル系共
重合体にアクリル酸系エステルとカルボキシル基を有す
る共重合性化合物とを成分とするアクリル系ポリマーを
少量配合することにより、前記特性を損なうことな（耐
熱性が改善される。From the viewpoint of working adhesive strength and its aging property, an acrylic copolymer is made by combining an acrylic acid ester having an aliphatic group having 8 to 10 carbon atoms and a copolymerizable compound having an alcoholic hydroxyl group. Only when used, pressure sensitive adhesives are obtained which have a satisfactory adhesion to the adherend and whose adhesion increases little over time. On the other hand, by blending a small amount of an acrylic polymer containing an acrylic acid ester and a copolymerizable compound having a carboxyl group into the acrylic copolymer described above, it is possible to improve heat resistance without impairing the above characteristics. Ru.
実施例
本発明の感圧接着剤は、アクリル系共重合体とアクリル
系ポリマーを成分とする。Examples The pressure-sensitive adhesive of the present invention contains an acrylic copolymer and an acrylic polymer as components.
そのアクリル系共重合体としては、炭素数８〜１０の脂
肪族基を有するアクリル酸系エステルと、アルコール性
水酸基を有する共重合性化合物を成分とするものが用い
られる。アクリル酸系エステルの例としては、２−エチ
ルヘキシル基、イソノニル基、イソデシル基の如き脂肪
族基を有するアクリル酸ないしメタクリル酸のエステル
などがあげられる。一方、アルコール性水酸基を有する
共重合性化合物の例としては、２−ヒドロキシエチル基
、２−ヒドロキシプロピル基、１−メチル−２−ヒドロ
キシエチル基等を有するアクリル酸ないしメタクリル酸
のエステルなどがあげられる。As the acrylic copolymer, one containing as components an acrylic ester having an aliphatic group having 8 to 10 carbon atoms and a copolymerizable compound having an alcoholic hydroxyl group is used. Examples of acrylic acid esters include esters of acrylic acid or methacrylic acid having aliphatic groups such as 2-ethylhexyl, isononyl, and isodecyl groups. On the other hand, examples of copolymerizable compounds having alcoholic hydroxyl groups include esters of acrylic acid or methacrylic acid having 2-hydroxyethyl groups, 2-hydroxypropyl groups, 1-methyl-2-hydroxyethyl groups, etc. It will be done.
本発明において用いるアクリル系共重合体は、炭素数が
８〜１０の脂肪族基を有するアクリル酸系エステル１０
０重量部あたり、アルコール性水酸基を有する共重合性
化合物を０．１〜１０重量部、就中３〜８重量部用いた
ものが適当である。その共重合性化合物の使用割合がｏ
、ｉｉ量郡部未満は、得られる感圧接着剤が架橋不足で
被着体に接着後の接着力が大きく上昇するものとなり、
１０重量部を超えると得られる感圧接着剤が架橋過多で
被着体に対する接着力に乏しくなる。The acrylic copolymer used in the present invention is an acrylic ester having an aliphatic group having 8 to 10 carbon atoms.
It is appropriate to use 0.1 to 10 parts by weight, particularly 3 to 8 parts by weight, of a copolymerizable compound having an alcoholic hydroxyl group per 0 parts by weight. The usage ratio of the copolymerizable compound is o
If the amount is less than 2, the resulting pressure-sensitive adhesive will be insufficiently crosslinked and the adhesive strength after adhering to the adherend will increase significantly,
If the amount exceeds 10 parts by weight, the resulting pressure-sensitive adhesive will be excessively crosslinked and will have poor adhesion to adherends.
なお上記アクリル系共重合体は、炭素数が８〜１０の脂
肪族基を有するもの以外のアクリル酸系エステルを併用
したものであってもよい。併用系の場合、炭素数が８〜
１０の脂肪族基を有するものの使用割合は５０重量％以
上が適当である。併用する他のエステルとしては、例え
ばエチル基やブチル基の如き炭素数が７以下の脂肪族基
を有するアクリル酸ないしメタクリル酸のエステルなど
が一般である。Note that the above-mentioned acrylic copolymer may be one in which an acrylic ester other than one having an aliphatic group having 8 to 10 carbon atoms is used in combination. In case of combined use, carbon number is 8~
The appropriate proportion of those having 10 aliphatic groups is 50% by weight or more. Other esters used in combination are generally esters of acrylic acid or methacrylic acid having an aliphatic group having 7 or less carbon atoms such as an ethyl group or a butyl group.
他方、感圧接着剤を形成するためのアクリル系ポリマー
としては、アクリル酸系エステルとカルボキシル基を有
する共重合性化合物を成分とするものが用いられる。そ
のアクリル酸系エステルについては特に限定はない。一
般には、例えばエチ・ル基、ブ・チル基、２−エチルヘ
キシル基、ラウリル基等のアルキル基を有するアクリル
酸ないしメタクリル酸のエステルなどが用いられる。ま
たカルボキシル基を有する共重合性化合物としては、例
えばアクリル酸、メタクリル酸、マレイン酸、イタコン
酸などが用いられる。カルボキシル基を有する共重合性
化合物の使用量は、アクリル酸系エステル１００重量部
あたり０．１〜１２重量部、就中３〜ＩＯ重量部が一般
的である。なお本発明において用いるアクリル系ポリマ
ーは、例えば酢酸ビニルやスチレンの如き他の成分を共
重合させたものであってもよい。On the other hand, as the acrylic polymer for forming the pressure-sensitive adhesive, one containing an acrylic ester and a copolymerizable compound having a carboxyl group is used. There are no particular limitations on the acrylic ester. Generally, esters of acrylic acid or methacrylic acid having an alkyl group such as an ethyl group, a butyl group, a 2-ethylhexyl group, or a lauryl group are used. Further, as the copolymerizable compound having a carboxyl group, for example, acrylic acid, methacrylic acid, maleic acid, itaconic acid, etc. are used. The amount of the copolymerizable compound having a carboxyl group used is generally 0.1 to 12 parts by weight, particularly 3 to IO parts by weight, per 100 parts by weight of the acrylic ester. The acrylic polymer used in the present invention may be one copolymerized with other components such as vinyl acetate or styrene.
感圧接着剤におけるアクリル系ポリマーの配合割合は、
アクリル系共重合体１００重量部あたり０．１〜３重量
部、就中１重量部以下が適当である。その配合割合が０
．１重量部未満では耐熱性の改善効果に乏しく、３重量
部を超えると接着力の経時上昇が大きくなり、感圧接着
剤の接着力が経時上昇しにくい特性が損なわれる。The blending ratio of acrylic polymer in pressure sensitive adhesive is
A suitable amount is 0.1 to 3 parts by weight, particularly 1 part by weight or less, per 100 parts by weight of the acrylic copolymer. The blending ratio is 0
．． If it is less than 1 part by weight, the effect of improving heat resistance will be poor, and if it exceeds 3 parts by weight, the adhesive strength will increase significantly over time, impairing the property of the pressure-sensitive adhesive that the adhesive strength does not easily increase over time.
本発明の感圧接着剤は、アクリル系共重合体にアクリル
系ポリマーを配合して架橋剤で架橋処理したものである
。用いる架橋剤について特に限定はな（、例えばポリイ
ソシアネート、メラミン系樹脂、金属塩等で代表される
公知の架橋剤を用いうる。架橋剤の配合量はゲル分が６
０％以上となるように用いられる。一般には、アクリル
系共重合体とアクリル系ポリマーの合計１００重量部あ
たり１〜１５重量部である。The pressure-sensitive adhesive of the present invention is an acrylic copolymer mixed with an acrylic polymer and crosslinked with a crosslinking agent. There are no particular limitations on the crosslinking agent used (for example, known crosslinking agents such as polyisocyanates, melamine resins, metal salts, etc. can be used).
It is used so that it is 0% or more. Generally, the amount is 1 to 15 parts by weight per 100 parts by weight of the acrylic copolymer and acrylic polymer.
なお本発明の感圧接着剤においては、必要に応じて例え
ば、充填剤や酸化防止剤などの常用配合剤を添加するこ
とは支障ない。In addition, in the pressure-sensitive adhesive of the present invention, there is no problem in adding commonly used ingredients such as fillers and antioxidants as necessary.
本発明の感圧接着剤は、例えば粘着テープ等などの通例
の用途のほか、表面保護部材の如く被着体に一旦接着し
たのち再剥離する必要のあるものに好ましく用いられる
。The pressure-sensitive adhesive of the present invention is preferably used not only for common uses such as adhesive tapes, but also for things that need to be re-peeled after being once adhered to an adherend, such as surface protection members.
本発明の表面保護部材は、かかる感圧接着剤からなる層
を通例、支持基材の片面に設けたものである。その製造
は、例えば支持基材上に感圧接着剤を塗布する方式など
、粘着テープの製造方法に準じて行うことができる。な
お感圧接着剤の層は支持基材に点状等、部分的に設けて
もよい。支持基材としては例えばプラスチック、紙、布
、金属箔などからなる薄葉体が一般に用いられる。ポリ
エチレンやポリプロピレンの如き非極性物質からなる支
持基材の場合には、コロナ放電処理等の表面処理を施す
ことが感圧接着剤の投錨性の向上に有効である。In the surface protection member of the present invention, a layer made of such a pressure-sensitive adhesive is usually provided on one side of a supporting base material. Its production can be carried out in accordance with the production method of adhesive tapes, for example, by applying a pressure-sensitive adhesive onto a supporting base material. Note that the pressure-sensitive adhesive layer may be provided partially, such as in dots, on the supporting base material. As the supporting base material, a thin film made of, for example, plastic, paper, cloth, metal foil, etc. is generally used. In the case of a supporting substrate made of a nonpolar substance such as polyethylene or polypropylene, surface treatment such as corona discharge treatment is effective in improving the anchoring properties of the pressure-sensitive adhesive.
本発明の表面保護部材は、例えば金属、プラスチック、
ガラスないしセラミックなどからなる適宜な被着体に用
いることができる。The surface protection member of the present invention includes, for example, metal, plastic,
It can be used for any suitable adherend made of glass, ceramic, or the like.
参考例１
アクリル酸イソノニル１００部（重量部、以下同様）及
びアクリル酸２−ヒドロキシエチル６部をトルエンから
なる溶剤中で、過酸化ベンゾイル０゜２部を開始剤とし
て共重合処理し、アクリル系共重合体の溶液を得た。Reference Example 1 100 parts of isononyl acrylate (parts by weight, the same applies hereinafter) and 6 parts of 2-hydroxyethyl acrylate were copolymerized in a solvent consisting of toluene using 0.2 parts of benzoyl peroxide as an initiator to produce an acrylic type. A copolymer solution was obtained.
参考例２
アクリル酸イソノニルに代えてアクリル酸２−エチルヘ
キシルを用いたほかは参考例１に準じてアクリル系共重
合体の溶液を得た。Reference Example 2 A solution of an acrylic copolymer was obtained according to Reference Example 1, except that 2-ethylhexyl acrylate was used in place of isononyl acrylate.
参考例３
アクリル酸ブチル７０部、アクリル酸エチル３０部及び
アクリル酸２−ヒドロキシエチル２部を用いて参考例１
に準じアクリル系共重合体の溶液を得た。Reference Example 3 Reference Example 1 was prepared using 70 parts of butyl acrylate, 30 parts of ethyl acrylate, and 2 parts of 2-hydroxyethyl acrylate.
A solution of an acrylic copolymer was obtained according to .
参考例４
アクリル酸イソノニルに代えてアクリル酸ブチルを用い
たほかは参考例１に準じてアクリル系共重合体の溶液を
得た。Reference Example 4 A solution of an acrylic copolymer was obtained according to Reference Example 1 except that butyl acrylate was used instead of isononyl acrylate.
参考例５
アクリル酸イソノニルに代えてメタクリル酸ラウリルを
用いたほかは参考例１に準じてアクリル系共重合体の溶
液を得た。Reference Example 5 A solution of an acrylic copolymer was obtained according to Reference Example 1 except that lauryl methacrylate was used in place of isononyl acrylate.
′ 参考例６
アクリル酸２−エチルヘキシル８５部、アクリル酸１０
部、酢酸ビニル１０部及びアクリル酸イソブチル５部を
トルエンからなる溶剤中で、過酸化ベンゾイル０．２部
を開始剤として共重合処理し、アクリル系ポリマーの溶
液を得た。' Reference Example 6 85 parts of 2-ethylhexyl acrylate, 10 parts of acrylic acid
10 parts of vinyl acetate and 5 parts of isobutyl acrylate were copolymerized in a solvent consisting of toluene using 0.2 parts of benzoyl peroxide as an initiator to obtain a solution of an acrylic polymer.
参考例７
アクリル酸ブチル７０部、アクリル酸エチル３０部及び
アクリル酸５部を用いて参考例６に準じアクリル系ポリ
マーの溶液を得た。Reference Example 7 An acrylic polymer solution was obtained according to Reference Example 6 using 70 parts of butyl acrylate, 30 parts of ethyl acrylate, and 5 parts of acrylic acid.
参考例８
アクリル酸イソノニル１００部及びアクリル酸６部を用
いて参考例６に準じアクリル系ポリマーの溶液を得た。Reference Example 8 An acrylic polymer solution was obtained according to Reference Example 6 using 100 parts of isononyl acrylate and 6 parts of acrylic acid.
実施例１
参考例１のアクリル系共重合体１００部（固形分、以下
同じ）に参考例６のアクリル系ポリマー０．１５部を配
合して（溶液状態、以下同じ）充分に撹拌し、得られた
ブレンドポリマー１００部にポリイソシアネート３部を
加えて感圧接着剤の溶液を調製し、これを厚さ３８ｕｓ
のポリエステルフィルムの片面に乾燥後の厚さが２０μ
蒙となるよう均一に塗布して約１００℃で３分間乾燥後
５０℃で２４時間熟成し、架橋状態の感圧接着剤からな
る層を有する表面保護部材を得た。Example 1 0.15 parts of the acrylic polymer of Reference Example 6 was blended with 100 parts of the acrylic copolymer of Reference Example 1 (solid content, the same hereinafter) (in solution state, the same hereinafter) and thoroughly stirred. A pressure sensitive adhesive solution was prepared by adding 3 parts of polyisocyanate to 100 parts of the blended polymer, and this was applied to a 38 us thick layer.
One side of the polyester film has a dry thickness of 20 μm.
The adhesive was coated uniformly so as to form a transparent adhesive, dried at about 100° C. for 3 minutes, and then aged at 50° C. for 24 hours to obtain a surface protection member having a layer made of a crosslinked pressure-sensitive adhesive.
実施例２
参考例２のアクリル系共重合体１００部と、参考例６の
アクリル系ポリマー０．１５部を用いて実施例１に準じ
感圧接着剤及び表面保護部材を得た。Example 2 A pressure-sensitive adhesive and a surface protection member were obtained according to Example 1 using 100 parts of the acrylic copolymer of Reference Example 2 and 0.15 parts of the acrylic polymer of Reference Example 6.
実施例３
参考例２のアクリル系共重合体１００部と、参考例７の
アクリル系ポリマー０．１部を用いて実施例１に準じ感
圧接着剤及び表面保護部材を得た。Example 3 A pressure-sensitive adhesive and a surface protection member were obtained according to Example 1 using 100 parts of the acrylic copolymer of Reference Example 2 and 0.1 part of the acrylic polymer of Reference Example 7.
実施例４
ポリイソシアネートに代えて、メラミン系樹脂を用いた
ほかは実施例１に準じて感圧接着剤及び表面保護部材を
得た。Example 4 A pressure sensitive adhesive and a surface protection member were obtained in the same manner as in Example 1, except that a melamine resin was used instead of polyisocyanate.
比較例１
参考例１のアクリル系共重合体１００部にポリイソシア
ネート３部を加えて実施例１に準じ感圧接着剤及び表面
保護部材を得た（アクリル系ポリマーは不使用）。Comparative Example 1 A pressure sensitive adhesive and a surface protection member were obtained according to Example 1 by adding 3 parts of polyisocyanate to 100 parts of the acrylic copolymer of Reference Example 1 (no acrylic polymer was used).
比較例２
参考例２のアクリル系共重合体１００部にポリイソシア
ネート３部を加えて実施例１に準じ感圧接着剤及び表面
保護部材を得たくアクリル系ポリマーは不使用）。Comparative Example 2 3 parts of polyisocyanate was added to 100 parts of the acrylic copolymer of Reference Example 2 to obtain a pressure-sensitive adhesive and a surface protection member according to Example 1 (no acrylic polymer was used).
比較例３
参考例１のアクリル系共重合体１００部と、参考例３の
アクリル系共重合体０．１５部を用いて実施例１に準じ
感圧接着剤及び表面保護部材を得たくアクリル系ポリマ
ーは不使用）。Comparative Example 3 I wanted to obtain a pressure sensitive adhesive and a surface protection member according to Example 1 using 100 parts of the acrylic copolymer of Reference Example 1 and 0.15 parts of the acrylic copolymer of Reference Example 3. (no polymers).
比較例４
参考例４のアクリル系共重合体１００部と、参考例６の
アクリル系ポリマー０．１５部を用いて実施例１に準じ
感圧接着剤及び表面保護部材を得た。Comparative Example 4 A pressure-sensitive adhesive and a surface protection member were obtained according to Example 1 using 100 parts of the acrylic copolymer of Reference Example 4 and 0.15 parts of the acrylic polymer of Reference Example 6.
比較例５
参考例５のアクリル系共重合体１００部と、参考例６の
アクリル系ポリマー０．１５部を用いて実施例１に準じ
感圧接着剤及び表面保護部材を得た。Comparative Example 5 A pressure sensitive adhesive and a surface protection member were obtained according to Example 1 using 100 parts of the acrylic copolymer of Reference Example 5 and 0.15 parts of the acrylic polymer of Reference Example 6.
比較例６
参考例８のアクリル系ポリマー１００部と、参考例６の
アクリル系ポリマー０．１５部を用いて実施例１に準じ
感圧接着剤及び表面保護部材を得た（アクリル系共重合
体は不使用）。Comparative Example 6 A pressure sensitive adhesive and a surface protection member were obtained according to Example 1 using 100 parts of the acrylic polymer of Reference Example 8 and 0.15 parts of the acrylic polymer of Reference Example 6 (acrylic copolymer is not used).
比較例７
ポリイソシアネートの使用量を０．５部としたほかは実
施例１に準じて感圧接着剤及び表面保護部材を得た。Comparative Example 7 A pressure-sensitive adhesive and a surface protection member were obtained in the same manner as in Example 1, except that the amount of polyisocyanate used was 0.5 parts.
評価試験
実施例、比較例で得た表面保護部材を下記の試験に供し
た。The surface protection members obtained in the evaluation test examples and comparative examples were subjected to the following tests.
［接着力１
表面保護部材を２０＋Ｉｎ幅に切断し、２３℃の雰囲気
下でその感圧接着剤層を介し、中心線に基づ（平均表面
粗さ（Ｒａ）０．５部ｍ １１０点平均粗さ（Ｒｚ）５
．４ｔｔｍのハードコート処理したメタクリル板、又は
Ｒａが０．０８ｎで表面張力が３０ｄｙｎ／ｃｍ未満の
トリアセテート板に約２ ｋｇ ／ ｃＪの圧力で圧着
した。[Adhesive Strength 1] Cut the surface protection member into a 20+In width, and apply the pressure-sensitive adhesive layer in an atmosphere at 23°C based on the center line (average surface roughness (Ra) 0.5 part m, 110 point average Roughness (Rz) 5
．． It was pressed at a pressure of about 2 kg/cJ to a 4ttm hard-coated methacrylic board or a triacetate board with an Ra of 0.08 n and a surface tension of less than 30 dyn/cm.
そして圧着後３０分経過時（初期物）、又は圧着後８０
℃で３時間保存したのち雰囲気温度（２３℃）に冷却し
たとき（加熱物）につき、２３℃の雰囲気温度で表面保
護部材を引剥がしく１８０度ビール、剥離速度３００
ｍ ／分）、その剥離に要する力を測定した。And 30 minutes after crimping (initial product) or 80 minutes after crimping
When stored at ℃ for 3 hours and then cooled to ambient temperature (23℃) (heated material), the surface protection member was peeled off at 23℃ ambient temperature, 180 degrees beer, peeling speed 300.
m/min) and the force required for its peeling was measured.
［浮き１
前記の接着力試験における加熱物の場合に準じて処理し
、表面保護部材の浮き（剥がれ）の有無を調べ、浮きか
認められない場合を○、浮きが認められた場合を×とし
た。ただし表面保護部材としては、６ＯＩＩＩｍ幅のも
のを用いた。[Lifting 1 The surface protection member was treated in the same manner as the case of the heated object in the adhesion test described above, and the presence or absence of lifting (peeling) of the surface protection member was examined. did. However, the surface protection member used had a width of 6OIIIm.
［ゲル分１
表面保護部材における感圧接着剤を剥ぎ集め、これを２
３℃の酢酸エチル中に４日間浸漬したのち取出し、１５
０℃で２時間乾燥処理したものの重量を測定し、浸漬前
後における重量変化から下式により算出した。[Gel content: 1 Peel off the pressure sensitive adhesive on the surface protection member and add it to 2
After soaking in ethyl acetate at 3°C for 4 days, it was taken out.
The weight of the sample dried at 0° C. for 2 hours was measured, and the weight change before and after immersion was calculated using the following formula.
ゲル分−浸漬後の重量／浸漬前の重量×１００結果を表
に示した。The results of gel content - weight after immersion/weight before immersion x 100 are shown in the table.
なお、表中の接着力の単位はｇ／２０＋ｎｍである。Note that the unit of adhesive force in the table is g/20+nm.
発明の効果
本発明の感圧接着剤は、接着力の経時上昇が小さく、か
つ加熱されても浮き等の剥離を生じず耐熱性に優れてい
る。その結果、本発明の表面保護部材は、被着体に対す
る接着力の初期状態の維持性に優れて再剥離が容易であ
り、異物の侵入を防・止できて、吸引方式によりスムー
ズに搬送することができる。Effects of the Invention The pressure-sensitive adhesive of the present invention exhibits a small increase in adhesive strength over time, does not cause peeling such as lifting even when heated, and has excellent heat resistance. As a result, the surface protection member of the present invention has excellent ability to maintain the initial state of adhesion to the adherend, is easy to re-peel, can prevent foreign matter from entering, and can be transported smoothly by suction. be able to.
特許出願人 日東電工株式会社Patent applicant: Nitto Denko Corporation
Claims (1)
エステルと、アルコール性水酸基を有する共重合性化合
物とを成分とするアクリル系共重合体１００重量部に、
アクリル酸系エステルと、カルボキシル基を有する共重
合性化合物とを成分とするアクリル系ポリマー０．１〜
３重量部を配合して架橋剤で架橋処理してなり、ゲル分
が６０％以上であることを特徴とする感圧接着剤。 ２、支持基材に、請求項１に記載の感圧接着剤からなる
層を設けてなることを特徴とする表面保護部材。[Scope of Claims] 1. 100 parts by weight of an acrylic copolymer comprising an acrylic ester having an aliphatic group having 8 to 10 carbon atoms and a copolymerizable compound having an alcoholic hydroxyl group,
Acrylic polymer containing an acrylic acid ester and a copolymerizable compound having a carboxyl group from 0.1 to
3 parts by weight, crosslinked with a crosslinking agent, and has a gel content of 60% or more. 2. A surface protection member comprising a support base material provided with a layer comprising the pressure sensitive adhesive according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2304688A JPH04178482A (en) | 1990-11-09 | 1990-11-09 | Pressure-sensitive adhesive and surface-protective member using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2304688A JPH04178482A (en) | 1990-11-09 | 1990-11-09 | Pressure-sensitive adhesive and surface-protective member using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04178482A true JPH04178482A (en) | 1992-06-25 |
Family
ID=17936026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2304688A Pending JPH04178482A (en) | 1990-11-09 | 1990-11-09 | Pressure-sensitive adhesive and surface-protective member using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04178482A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005089573A (en) * | 2003-09-16 | 2005-04-07 | Nippon Synthetic Chem Ind Co Ltd:The | Pressure-sensitive adhesive composition |
| JP2005314513A (en) * | 2004-04-28 | 2005-11-10 | Nitto Denko Corp | Adhesive composition, and surface-protective film obtained by using the same |
| WO2007080936A1 (en) * | 2006-01-13 | 2007-07-19 | Denki Kagaku Kogyo Kabushiki Kaisha | Curable resin composition, surface protection method, temporary fixation method, and separation method |
| JP2007186587A (en) * | 2006-01-13 | 2007-07-26 | Denki Kagaku Kogyo Kk | Resin composition, method for temporarily fixing member to be processed and method for protecting surface by using the same |
| CN103374274A (en) * | 2012-04-27 | 2013-10-30 | 日东电工株式会社 | Pressure-sensitive adhesive composition and pressure-sensitive adhesive sheet |
| JP2016216738A (en) * | 2010-11-30 | 2016-12-22 | 日東電工株式会社 | Surface protective sheet |
| JP2017020032A (en) * | 2010-11-30 | 2017-01-26 | 日東電工株式会社 | Surface protective sheet |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57182373A (en) * | 1981-05-06 | 1982-11-10 | Hitachi Chem Co Ltd | Self-adhesive for surface-protective film |
| JPS61261382A (en) * | 1985-05-15 | 1986-11-19 | Nichiban Co Ltd | Releasable self-adhesive composition |
| JPS63225677A (en) * | 1987-03-13 | 1988-09-20 | Nitto Electric Ind Co Ltd | Pressure-sensitive adhesive |
| JPH0431480A (en) * | 1990-05-28 | 1992-02-03 | Soken Kagaku Kk | Acrylic pressure-sensitive adhesive composition |
-
1990
- 1990-11-09 JP JP2304688A patent/JPH04178482A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57182373A (en) * | 1981-05-06 | 1982-11-10 | Hitachi Chem Co Ltd | Self-adhesive for surface-protective film |
| JPS61261382A (en) * | 1985-05-15 | 1986-11-19 | Nichiban Co Ltd | Releasable self-adhesive composition |
| JPS63225677A (en) * | 1987-03-13 | 1988-09-20 | Nitto Electric Ind Co Ltd | Pressure-sensitive adhesive |
| JPH0431480A (en) * | 1990-05-28 | 1992-02-03 | Soken Kagaku Kk | Acrylic pressure-sensitive adhesive composition |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005089573A (en) * | 2003-09-16 | 2005-04-07 | Nippon Synthetic Chem Ind Co Ltd:The | Pressure-sensitive adhesive composition |
| JP4490064B2 (en) * | 2003-09-16 | 2010-06-23 | 日本合成化学工業株式会社 | Adhesive composition |
| JP2005314513A (en) * | 2004-04-28 | 2005-11-10 | Nitto Denko Corp | Adhesive composition, and surface-protective film obtained by using the same |
| WO2007080936A1 (en) * | 2006-01-13 | 2007-07-19 | Denki Kagaku Kogyo Kabushiki Kaisha | Curable resin composition, surface protection method, temporary fixation method, and separation method |
| JP2007186587A (en) * | 2006-01-13 | 2007-07-26 | Denki Kagaku Kogyo Kk | Resin composition, method for temporarily fixing member to be processed and method for protecting surface by using the same |
| JP2016216738A (en) * | 2010-11-30 | 2016-12-22 | 日東電工株式会社 | Surface protective sheet |
| JP2017020032A (en) * | 2010-11-30 | 2017-01-26 | 日東電工株式会社 | Surface protective sheet |
| CN103374274A (en) * | 2012-04-27 | 2013-10-30 | 日东电工株式会社 | Pressure-sensitive adhesive composition and pressure-sensitive adhesive sheet |
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