JP5415586B2 - 帯電防止コーティング組成物、それを用いた帯電防止ポリエステルフィルムおよびその製造方法 - Google Patents
帯電防止コーティング組成物、それを用いた帯電防止ポリエステルフィルムおよびその製造方法 Download PDFInfo
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- JP5415586B2 JP5415586B2 JP2012119481A JP2012119481A JP5415586B2 JP 5415586 B2 JP5415586 B2 JP 5415586B2 JP 2012119481 A JP2012119481 A JP 2012119481A JP 2012119481 A JP2012119481 A JP 2012119481A JP 5415586 B2 JP5415586 B2 JP 5415586B2
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/044—Forming conductive coatings; Forming coatings having anti-static properties
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/06—Ethers; Acetals; Ketals; Ortho-esters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
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Description
また、コーティング組成物のウェット性に優れており、しかも、コーティング縞、コーティング斑などが生じることがなく、見栄えがよい。
本発明の帯電防止コーティング組成物に含有されるカチオン性共重合高分子樹脂(A)は、優れた帯電防止性能を与えるために用いられ、本質的に、カチオン性単量体、疎水性単量体および架橋結合性単量体を共重合して得られる。このとき、前記カチオン性単量体は、下記の一般式Iで表される化合物である:
本発明の帯電防止コーティング組成物に含有されるアクリル樹脂は、ポリエステルフィルムに塗布されて前記フィルム面とテープとの剥離力を高めるためものである。
本発明の帯電防止コーティング組成物中に含有される架橋剤は、架橋密度を調節して帯電防止層とポリエステルフィルムとの耐溶剤性および塗膜性能を向上させるために用いられる。このとき、好適な架橋剤成分としては、イソシアネート系、カルボキシイミド系、オキサゾリン系、エポキシ系およびメラミン系よりなる群から選ばれるいずれか一種以上の樹脂が使用可能である。
前記帯電防止コーティング組成物中に含有される前記フッ素樹脂は、ポリエステルフィルムに塗布されて前記フィルムの防汚性および耐溶剤性を向上させるためのものである。
本発明の帯電防止コーティング組成物に、界面活性剤としてアセチレンジオール系界面活性剤を含有することにより、優れた濡れ性、塗布レベリング性が得られ、且つ、粘着テープからの剥離力、防汚性などの主なコーティング物性を維持してコーティング後の外観物性の確保に有利である。このため、本発明の帯電防止コーティング組成物を用いて品質に優れており、しかも、コーティング後の外観に優れた帯電防止ポリエステルフィルムを提供することができる。
上述した成分A、B、C、DおよびEを含む本発明の帯電防止コーティング組成物は、固形分の含量が0.5〜10.0重量%になるように溶媒に希釈されて用いられる。本発明において、固形分含量とは、溶媒を除く成分に対するwt%のことをいう。前記固形分の含量が10重量%よりも高い場合、高粘度によって流動性が悪化し、且つ、コーティング厚さが増えることに伴いフィルム成膜性が悪くなる。また、前記固形分の含量が0.5重量%よりも小さな場合には、テープ剥離力、防汚性、耐溶剤性など所要の物性が得られない。
ステップ1:1軸延伸ポリエステルフィルムの製造
平均粒径2.5μmの無定形球状シリカ粒子が20ppm含まれている極限粘度0.625dL/gのポリエチレンテレフタレートペレットを真空ドライヤーを用いて7時間160℃で十分に乾燥した後に溶融し、押出Tダイを用いて冷却ドラムに静電密着法により密着させて無定形未延伸シートにし、さらにこれを加熱して95℃でフィルムの進行方向に3.5倍延伸して1軸延伸ポリエステルフィルムを製造した。次いで、コーティングされるフィルム面にコロナ放電処理を施してポリエステルフィルムを製造した。
コロナ処理された面に固形分として、カチオン性共重合高分子樹脂(ELECUT−007、竹本油脂株式会社製)100重量部、低分子量アクリル樹脂(ELECUT−CY11、竹本油脂株式会社製、数平均分子量15,000)200重量部、メラミン架橋剤(ELECUT−L02、竹本油脂株式会社製)200重量部、フッ素樹脂(ZONYL504、デュポン社製)100重量部、アセチレンジオール系界面活性剤(DYNOL−103、2,5,8,11−テトラメチル6−ドデシン−5,8ジオールエトキシレート)0.1重量部を水に混合して帯電防止コーティング液を製造した。このとき、固形分の含量は、全体の帯電防止コーティング液に対して、2.2重量%であった。前記帯電防止コーティング液をグラビアロールを用いて前記ステップ1において製造された1軸ポリエステルフィルムに塗布した。
上述した塗布後、105〜140℃テンター区間で塗布されたコーティング液を乾燥させ、フィルムの進行方向に垂直な方向に3.8倍延伸し、240℃で4秒間熱処理して38μmの厚さの2軸延伸帯電防止ポリエステルフィルムを製造した。
カチオン性共重合高分子樹脂(ELECUT−007)100重量部、高分子量アクリル樹脂(ELECUT−CY04、竹本油脂株式会社製、分子量25,000)200重量部、メラミン架橋剤(ELECUT−L02)200重量部、フッ素樹脂(ZONYL−504)100重量部および界面活性剤(DYNOL−103)0.1重量部を水に混合して、固形分の総含量を2.2重量%にした以外は、実施例1の方法と同様にして2軸延伸帯電防止ポリエステルフィルムを製造した。
帯電防止コーティング液の組成中にアクリル樹脂を含有させなかった以外は、前記実施例1の方法と同様にして2軸延伸帯電防止ポリエステルフィルムを製造した。
帯電防止コーティング液の組成中に架橋剤を含有させなかった以外は、前記実施例1の方法と同様にして2軸延伸帯電防止ポリエステルフィルムを製造した。
帯電防止コーティング液の組成中にフッ素樹脂を含有させなかった以外は、前記実施例1の方法と同様にして2軸延伸帯電防止ポリエステルフィルムを製造した。
帯電防止コーティング液の組成中に界面活性剤を含有させなかった以外は、前記実施例1の方法と同様にして2軸延伸帯電防止ポリエステルフィルムを製造した。
実施例1および比較例1〜5に従い製造された帯電防止ポリエステルフィルムに対して、下記の物性を評価し、その結果を表1に示す。
透過率測定器(日本電色工業株式会社製、型番NDH5000)を用いて、製造されたポリエステルフィルムの真ん中を測定した。
蛍光灯、ハロゲン灯の光源からの透過および反射光を用いて、コーティング縞、コーティング斑などの見掛けの品質を確認した。
△:目視でコーティング縞、コーティング斑などが見られるものの、良品のレベルである
×:目視でコーティング縞、コーティング斑などが激しく見られ、良品のレベルではない
帯電防止測定機器(三菱化学(株) 製、型番MCP−T600)を用いて、温度23℃、湿度50%RHの環境に試料を設けた後、JIS K7194に準拠して表面抵抗を測定した。
接触角測定機器(協和界面科学株式会社製、型番Dropmaster 300)を用いて、イオン交換水を蒸留して得た精製水で液滴法により水接触角を測定し、異なる位置で5回測定した後、平均値をとった。
エタノールで布地(旭化成せんい株式会社製のBEMCOT)をぬらした後、前記コーティング処理の施されたフィルム面を0.5kg荷重で10回往復させ、次いで、コーティング面の状態を下記の基準に基づいて評価した。
△:帯電防止性の変化が101Ω/sq以上、1011Ω/sq未満である
×:帯電防止性が1011Ω/sqを超えている
23℃、相対湿度50±5%の雰囲気下で、剥離力測定機器(ケミンストラメンツ社製のAR1000)を用いて、上記のようにして得られたフィルムのコーティング面に粘着テープ(日東電工株式会社製テープNO.31B、幅:25mm)を貼り付けた後、2kg荷重のゴムローラーで1回往復して圧着し、1時間放置後に剥離速度0.3MPMにて180°剥離した。このときに得られた剥離力の値を測定した。
23℃、相対湿度50±5%の雰囲気下で、剥離力測定機器(ケミンストラメンツ社製のAR1000)を用いて、上記のようにして得られたフィルムのコーティング面に粘着テープ(3M社製テープNO.244、幅:18mm)を貼り付けた後、2kg荷重のゴムローラーで1回往復して圧着し、1時間放置後に剥離速度0.3MPMにて180°剥離した。このときに得られた剥離力の値を測定した。
Claims (10)
- 下記の一般式Iで表されるカチオン性単量体30〜70wt%が含有されて共重合されたカチオン性共重合高分子樹脂(A)100重量部と、
ヒドロキシル基、アミノ基、アルキル基およびカルボキシル基よりなる群から選ばれるいずれか一種以上の官能基を含むポリエーテルアクリル分散体からなる数平均分子量が10,000〜20,000の水分散性低分子型アクリル樹脂(B)100〜1000重量部と、
イソシアネート系、カルボキシイミド系、オキサゾリン系、エポキシ系およびメラミン系よりなる群から選ばれるいずれか一種以上の架橋剤樹脂(C)100〜1000重量部と、
フッ素樹脂(D)10〜200重量部と、
アセチレンジオール系界面活性剤(E)0.001〜1重量部と、
を含む、帯電防止コーティング組成物:
- 前記フッ素樹脂は、ポリビニルフルオライド、ポリビニリデンフルオライド、ポリトリフルオロエチレン、ポリテトラフルオロエチレン、ポリクロロトリフルオロエチレン、エチレン−テトラフルオロエチレン共重合体、エチレン−クロロトリフルオロエチレン共重合体およびヘキサフルオロプロピレン−テトラフルオロエチレン共重合体よりなる群から選ばれるいずれか一種以上であることを特徴とする請求項1に記載の前記帯電防止コーティング組成物。
- 前記アセチレンジオール系界面活性剤は、トリフルオロメチル基、メチル基、ビニル基、アリル基、エチニル基、フェニル基、アリール基、ハロゲン基、アルコキシ基、シアノ基、アミノ基、水酸基、カルボニル基、エステル基およびカルボキシル基よりなる群から選ばれる少なくとも一つの官能基を含むことを特徴とする請求項3に記載の前記帯電防止コーティング組成物。
- 前記帯電防止コーティング組成物中の固形分の含量が、0.5〜10.0重量%であることを特徴とする請求項1に記載の前記帯電防止コーティング組成物。
- ポリエステルフィルムの片面または両面に、請求項1に記載の帯電防止コーティング組成物が塗布されて帯電防止層が形成され、108〜1010Ω/sqの表面抵抗を有する帯電防止ポリエステルフィルム。
- 前記帯電防止ポリエステルフィルムの表面をエタノール、メチルエチルケトン、トルエンおよび酢酸エチルよりなる群から選ばれるいずれか一種の有機溶媒で洗浄した後の表面抵抗が109〜1011Ω/sqであることを特徴とする請求項6に記載の前記帯電防止ポリエステルフィルム。
- 帯電防止ポリエステルフィルムの水接触角が85°以上であることを特徴とする請求項6に記載の前記帯電防止ポリエステルフィルム。
- ポリエステルフィルムを1軸延伸し、
請求項1に記載の帯電防止コーティング組成物を前記1軸延伸されたポリエステルフィルムの片面または両面に塗布して帯電防止層を形成し、
前記帯電防止層の形成されたポリエステルフィルムを再延伸して2軸延伸ポリエステルフィルムを製造する帯電防止ポリエステルフィルムの製造方法。 - 前記帯電防止コーティング組成物中の固形分の含量が、0.5〜10重量%であることを特徴とする請求項9に記載の前記帯電防止ポリエステルフィルムの製造方法。
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JP4868978B2 (ja) * | 2006-08-21 | 2012-02-01 | 竹本油脂株式会社 | 熱可塑性高分子用帯電防止剤及び熱可塑性高分子成形体の帯電防止方法並びに帯電防止性熱可塑性高分子成形体 |
JP4804273B2 (ja) * | 2006-08-29 | 2011-11-02 | 帝人デュポンフィルム株式会社 | 帯電防止性ポリエステルフィルム |
KR100782034B1 (ko) * | 2007-01-04 | 2007-12-04 | 도레이새한 주식회사 | 플렉소 인쇄판용 폴리에스테르 필름 |
KR100902034B1 (ko) * | 2007-09-28 | 2009-06-15 | 도레이새한 주식회사 | 대전방지 폴리에스테르 필름의 제조방법 |
TWI398498B (zh) * | 2009-06-09 | 2013-06-11 | Toray Advanced Mat Korea Inc | 含有乙炔二醇界面活性劑之抗靜電聚酯膜及其製造方法 |
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JP2012246483A (ja) | 2012-12-13 |
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