JP6844751B2 - 粘着剤組成物 - Google Patents
粘着剤組成物 Download PDFInfo
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- JP6844751B2 JP6844751B2 JP2020525284A JP2020525284A JP6844751B2 JP 6844751 B2 JP6844751 B2 JP 6844751B2 JP 2020525284 A JP2020525284 A JP 2020525284A JP 2020525284 A JP2020525284 A JP 2020525284A JP 6844751 B2 JP6844751 B2 JP 6844751B2
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- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
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- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000002560 nitrile group Chemical group 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([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])[H] 0.000 description 1
- HDBWAWNLGGMZRQ-UHFFFAOYSA-N p-Vinylbiphenyl Chemical compound C1=CC(C=C)=CC=C1C1=CC=CC=C1 HDBWAWNLGGMZRQ-UHFFFAOYSA-N 0.000 description 1
- FUGYGGDSWSUORM-UHFFFAOYSA-N para-hydroxystyrene Natural products OC1=CC=C(C=C)C=C1 FUGYGGDSWSUORM-UHFFFAOYSA-N 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- XUWHAWMETYGRKB-UHFFFAOYSA-N piperidin-2-one Chemical compound O=C1CCCCN1 XUWHAWMETYGRKB-UHFFFAOYSA-N 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- GRWFGVWFFZKLTI-UHFFFAOYSA-N rac-alpha-Pinene Natural products CC1=CCC2C(C)(C)C1C2 GRWFGVWFFZKLTI-UHFFFAOYSA-N 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004334 sorbic acid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012719 thermal polymerization Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000004246 zinc acetate Substances 0.000 description 1
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
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- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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- C09J133/062—Copolymers with monomers not covered by C09J133/06
- C09J133/066—Copolymers with monomers not covered by C09J133/06 containing -OH groups
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- C09J7/00—Adhesives in the form of films or foils
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- C09J7/38—Pressure-sensitive adhesives [PSA]
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- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
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Description
しかしながら、これらの粘着剤では、耐可塑剤性は得られるものの、実使用上求められる高接着力を満足するに至っていない。
前記窒素原子を含む(メタ)アクリル単量体(a2)は、窒素原子を含むアクリル単量体であることが好ましい。
R2及びR3の少なくとも一方は、水素原子であることが好ましい。
また、前記ヒドロキシル基を有する(メタ)アクリル単量体としては、ヒドロキシル基を有するアクリル単量体であることが好ましい。
中でも水添ロジン樹脂であるパインクリスタルKE−100、KE−311、PE−590、KE−359等が好ましい。
中でも、イソシアネート架橋剤、エポキシ架橋剤、オキサゾリン架橋剤、カルボジイミド架橋剤、グリシジル(アルコキシ)エポキシシラン架橋剤が好ましく、イソシアネート架橋剤、エポキシ架橋剤、カルボジイミド架橋剤がより好ましく、イソシアネート架橋剤が特に好ましい。
<アクリル樹脂(A)の合成>
攪拌機、還流冷却管、窒素導入管、温度計を備えた反応容器に、2−エチルヘキシルアクリレート885質量部、アクリル酸10質量部、ダイアセトンアクリルアミド100質量部、4−ヒドロキシエチルアクリレート5質量部、酢酸エチル1000質量部を仕込み、攪拌下、窒素を吹き込みながら70℃まで昇温した。1時間後に、予め酢酸エチルにて溶解した2,2’−アゾビス(2−メチルブチロニトリル)溶液10部(固形分5%)を添加した。その後、攪拌下70℃にて8時間ホールドした後、内容物を冷却し200メッシュ金網にて濾過し、不揮発分50質量%、粘度100、000mPa・s、重量平均分子量80万のアクリル樹脂(A)を得た。
合成例1で得られたアクリル樹脂(A)100質量部に対して、粘着付与樹脂1(パインクリスタルPE−590:荒川化学(株)社製)15質量部、粘着付与樹脂2(FTR6125:三井化学(株)社製)10重両部、ポリイソシアネート系架橋剤(ファインタック 硬化剤 D−40;DIC(株)製)0.75質量部を均一になるように攪拌混合することによってアクリル粘着組成物を得た。
実施例1において、アクリル樹脂の窒素官能基単量体、カルボキシル基含有単量体、粘着付与樹脂、架橋剤の種類、及び添加量を表1に示すとおりに変更した以外は、実施例1と同様にして粘着剤組成物を得た。
測定装置:高速GPC装置(東ソー株式会社製「HLC−8220GPC」)
カラム:東ソー株式会社製の下記のカラムを直列に接続して使用した。
「TSKgel G5000」(7.8mmI.D.×30cm)×1本
「TSKgel G4000」(7.8mmI.D.×30cm)×1本
「TSKgel G3000」(7.8mmI.D.×30cm)×1本
「TSKgel G2000」(7.8mmI.D.×30cm)×1本
検出器:RI(示差屈折計)
カラム温度:40℃
溶離液:テトラヒドロフラン(THF)
流速:1.0mL/分
注入量:100μL(試料濃度0.4質量%のテトラヒドロフラン溶液)
標準試料:下記の標準ポリスチレンを用いて検量線を作成した。
東ソー株式会社製「TSKgel 標準ポリスチレン A−500」
東ソー株式会社製「TSKgel 標準ポリスチレン A−1000」
東ソー株式会社製「TSKgel 標準ポリスチレン A−2500」
東ソー株式会社製「TSKgel 標準ポリスチレン A−5000」
東ソー株式会社製「TSKgel 標準ポリスチレン F−1」
東ソー株式会社製「TSKgel 標準ポリスチレン F−2」
東ソー株式会社製「TSKgel 標準ポリスチレン F−4」
東ソー株式会社製「TSKgel 標準ポリスチレン F−10」
東ソー株式会社製「TSKgel 標準ポリスチレン F−20」
東ソー株式会社製「TSKgel 標準ポリスチレン F−40」
東ソー株式会社製「TSKgel 標準ポリスチレン F−80」
東ソー株式会社製「TSKgel 標準ポリスチレン F−128」
東ソー株式会社製「TSKgel 標準ポリスチレン F−288」
東ソー株式会社製「TSKgel 標準ポリスチレン F−550」
実施例1において、アクリル樹脂の窒素官能基単量体、粘着付与樹脂の添加量を表1に示すとおりに変更した以外は、実施例1と同様にして粘着剤組成物を得た。
表面に離型処理された厚さ25μmのポリエチレンテレフタレートフィルム(離型PET25)の表面に、溶剤乾燥後における膜厚が25μmとなるように実施例及び比較例で得られた粘着剤組成物を塗布し、80℃乾燥機中で3分間溶剤を揮発した後に、軟質塩ビ基材を貼り合わせた。
前述の方法で作成した粘着フィルムを25mm幅に切ったものを試験片とした。被着体をSUS304ステンレス板で表面仕上げBA(冷間圧延後、光輝熱処理)のステンレス板、若しくはPP(ポリプロピレン)板とし、2kgロール×2往復で被着体に貼り付けた。貼り付け1時間後に23℃、50%RHの雰囲気下で180度剥離強度を測定し、接着力とした。結果を表1に示す。
加工直後の接着力の値がSUSに対して18N/25mm以上かつPPに対して13N/25mm以上を〇、それ未満を×とした。
以下の通り、接着力保持率を評価し、80%以上を◎、70%以上を〇、70%未満を×とした。結果を表1に示す。
窒素原子を含む(メタ)アクリル単量体やカルボキシル基を有する(メタ)アクリル単量体とを併用したアクリル重合体は高Tgであるため、多量に添加すると柔軟性が不足し、密着性低下に因る接着力低下が起こるが、相溶性の良い粘着付与樹脂を添加することで密着性を向上、高接着力化と耐可塑剤移行性を両立した。
Claims (6)
- アクリル重合体(A)、粘着付与樹脂(B)、架橋剤(C)及び有機溶剤(D)を含み、前記アクリル重合体(A)が、(メタ)アクリル酸アルキルエステル(a1)、窒素原子を含む(メタ)アクリル単量体(a2)、カルボキシル基を有する(メタ)アクリル単量体(a3)及びヒドロキシル基を有する(メタ)アクリル単量体に由来する単位を有するものであり、前記窒素原子を含む(メタ)アクリル単量体(a2)に由来する単位とカルボキシル基を有する(メタ)アクリル単量体(a3)に由来する単位の質量比((a2)/(a3))が、1.0以上20以下であり、前記ヒドロキシル基を有する(メタ)アクリル単量体の含有率が0.01〜10質量%の範囲であり、粘着付与樹脂(B)の含有率が、不揮発分中20質量%以上であり、前記粘着付与樹脂(B)中、ロジン系粘着付与樹脂(b1)の含有率が40質量%以上であることを特徴とする粘着剤組成物。
- 前記窒素原子を含む(メタ)アクリル単量体(a2)が、(メタ)アクリルアミド化合物を含むものである請求項1記載の粘着剤組成物。
- 前記ロジン系粘着付与樹脂(b1)として、水添ロジン系粘着付与
樹脂を含む請求項1〜3のいずれか1項記載の粘着剤組成物。 - 請求項1〜4のいずれか1項記載の粘着剤組成物から形成される粘
着層。 - 塩化ビニル樹脂基材と、請求項5記載の粘着層とを有するシート又
はテープ。
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PCT/JP2019/014934 WO2019239688A1 (ja) | 2018-06-15 | 2019-04-04 | 粘着剤組成物 |
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CN113831870A (zh) * | 2021-11-04 | 2021-12-24 | 安佐化学有限公司 | 一种粘合剂及其制备方法及粘合片 |
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US3998997A (en) * | 1975-02-26 | 1976-12-21 | The Goodyear Tire & Rubber Company | Pressure sensitive adhesives using interpolymer of acrylates, oxypropyl acrylamides and acrylic acid |
JPH08157788A (ja) * | 1994-12-02 | 1996-06-18 | Sekisui Chem Co Ltd | 両面粘着テープ |
JP2001207146A (ja) * | 2000-01-26 | 2001-07-31 | Saiden Chemical Industry Co Ltd | 水性粘着剤組成物 |
JP4557096B2 (ja) * | 2008-03-28 | 2010-10-06 | Dic株式会社 | 水分散型アクリル系粘着剤組成物および粘着テープ |
JP2010126697A (ja) * | 2008-11-28 | 2010-06-10 | Three M Innovative Properties Co | 粘着剤組成物および粘着テープ |
IN2012DN02720A (ja) * | 2009-09-29 | 2015-09-11 | Lintec Corp | |
JP5138758B2 (ja) * | 2010-11-02 | 2013-02-06 | 住友ゴム工業株式会社 | 空気入りタイヤ |
JP5820619B2 (ja) * | 2011-01-20 | 2015-11-24 | 日東電工株式会社 | 粘着テープ |
JP5842394B2 (ja) * | 2011-06-14 | 2016-01-13 | Dic株式会社 | 水性粘着剤用組成物、水性粘着剤、粘着シート及び積層体 |
JP5924102B2 (ja) * | 2012-04-25 | 2016-05-25 | Dic株式会社 | 粘着付与剤、水性粘着剤用組成物、水性粘着剤及び粘着シート |
KR102218123B1 (ko) * | 2013-08-30 | 2021-02-19 | 주식회사 쿠라레 | 변성 아크릴계 블록 공중합체 그리고 그것의 제조 방법 및 용도 |
JP2015172139A (ja) * | 2014-03-12 | 2015-10-01 | デクセリアルズ株式会社 | 粘着剤組成物 |
CN107075334A (zh) * | 2014-09-04 | 2017-08-18 | 3M创新有限公司 | 包含纳米晶纤维素的压敏粘合剂 |
JP6632846B2 (ja) * | 2014-09-30 | 2020-01-22 | 日東電工株式会社 | 粘着シート |
CN107429131B (zh) * | 2015-06-29 | 2021-02-19 | Dic株式会社 | 粘合带、电线束捆扎用片材及物品 |
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