JP3892940B2 - Active energy ray-curable overprint varnish composition - Google Patents

Active energy ray-curable overprint varnish composition Download PDF

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Publication number
JP3892940B2
JP3892940B2 JP15819697A JP15819697A JP3892940B2 JP 3892940 B2 JP3892940 B2 JP 3892940B2 JP 15819697 A JP15819697 A JP 15819697A JP 15819697 A JP15819697 A JP 15819697A JP 3892940 B2 JP3892940 B2 JP 3892940B2
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JP
Japan
Prior art keywords
active energy
energy ray
overprint varnish
varnish
varnish 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.)
Expired - Fee Related
Application number
JP15819697A
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Japanese (ja)
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JPH111652A (en
Inventor
秀樹 長谷川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Ink SC Holdings Co Ltd
Toppan Inc
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Toyo Ink SC Holdings Co Ltd
Toppan Inc
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Filing date
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Priority to JP15819697A priority Critical patent/JP3892940B2/en
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Anticipated expiration legal-status Critical
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Description

【0001】
【発明の属する技術分野】
本発明は、特に撥水性、耐汚染性、耐摩擦性に優れた活性エネルギー線硬化型オーバーブリントニス組成物に関する。
【0002】
【従来の技術】
一般に印刷物の光沢向上、印刷物の皮膜保護の為、オーバープリントニス(以 後OPニス)が使用されている。
特に紫外線や電子線等の活性エネルギー線硬化型OPニスは、その皮膜強度が優れていること等から、印刷インキ各色(黄、紅、藍、墨等)を印刷後等に多用されている。しかしながら、印刷物にコーヒー、ソース、アルコール類等の飲料物がこぼれたりすると、表面に汚れが付着した跡が残ったり、印刷物にべた付きが残ったりする耐汚染性が不十分な事がある。
又、ポスター等のように風雨にさらされると、撥水性が不十分の為印刷物の皮膜が侵される事がある。
さらに、通常の印刷物は衝撃や、引っ掻き傷に対する耐摩擦性も必ずしも十分ではない。従来、これらの諸性能は透明なフィルムを印刷物に貼る事によって得ることが可能であった。しかしながら、近年印刷によって安価にこれらの諸性能を満足させたい、との要求が強まってきている。
これらの対策として、従来OPニスにポリエチレンワックスやシリコン系の添加剤を使用していたが、OPニスの性能に対する市場の要求は年々高くなり、必ずしも十分な性能を有しているとは言い難いのが現状である。
【0003】
【発明が解決しようとする課題】
本発明は、撥水性、耐汚染性、耐摩擦性等に優れた活性エネルギー線硬化型OPニス組成物を提供するものである。
【0004】
【課題を解決するための手段】
すなわち、本発明は、エチレン性不飽和二重結合を有するモノマー又はオリゴマーにポリテトラフルオロエチレン粒子を含有してなることを特徴とする活性エネルギー線硬化型オーバープリントニス組成物に関する。
【0005】
更に本発明は、エチレン性不飽和二重結合を有するモノマー又はオリゴマーに体積平均粒径2〜6マイクロメーターであるポリテトラフルオロエチレン粒子を含有してなる活性エネルギー線硬化型オーバープリントニス組成物において、ポリテトラフルオロエチレン粒子の含有量が、ポリテトラフルオロエチレン粒子を除いた活性エネルギー線硬化型オーバープリントニスの固形分比で10〜100重量%である請求項1記載の活性エネルギー線硬化型オーバープリントニス組成物に関する。
【0006】
【発明の実施の形態】
本発明において、ポリテトラフルオロエチレン(以下PTFEと略)の粒径は、レーザー回折法、コールターカウンター法等により得られる体積平均粒径である。PTFE粒子は、体積平均粒径2〜6マイクロメートルのものであり、さらに好ましくは、全粒子の45重量%以上の粒子が体積平均粒径2〜6マイクロメートルのものを使用する。体積平均粒径が2マイクロメートルに満たない場合は、OPニス皮膜の中にPTFE粒子がもぐり込んでOPニス皮膜上に突出せず、耐摩擦性が劣化する。また体積平均粒径が6マイクロメートルより大きい場合は、PTFEのOPニスへの分散性が悪く流動性も劣化し、PTFEワックスが印刷機の版やブランケットへ堆積してしまう。更に、PTFE粒子はOPニスの組成物中固形分比で10〜100重量%を添加する。含有量が10重量%より少ないと、水性、耐汚染性、耐摩擦性が十分に得られず、100重量%より多いと耐パイリング性、レベリング性が不十分となり、また光沢も劣化が大きい。
【0007】
本発明の活性エネルギー線硬化型OPニスは紫外線、或いは電子線によって硬化するもので、通常使用されているオフセット印刷用、シルクスクリーン印刷用、凸版印刷用、等の活性エネルギー線硬化型OPニスであれば良い。これらの基本的な組成としてエチレン性不飽和二重結合を有するモノマー又はオリゴマーに必要に応じて、光開始剤、樹脂、増感剤、体質顔料、添加剤を含んでいてもよい。
【0008】
本発明のOPニスのバインダー成分としてエチレン性不飽和二重結合を有するモノマー又はオリゴマーの少なくともー種が用いられる。
具体的には,(メタ)アクリル酸エステル、例えばエチレングリコールジ(メタタ)アクリレート、プロピレングリコールジ(メタ)アクリレート、1、4ブタンジオールジ(メタ)アクリレート、ポリエチレングリコールジ(メタ)アクリレート、トリメチロールプロパントリ(メタ)アクリレート、ジトリメチロールプロパンテトラ(メタ)アクリレート、ペンタエリスリトールトリ(テトラ)(メタ)アクリレート、ジペンタエリスリトールペンタ(ヘキサ)(メタ)アクリレート、等の多価アルコールの(メタ)アクリレート等がある。
【0009】
本発明に使用される光硬化開始剤としては、一般的に市販される物を使用する事が出来る。例えば、イルガキュアー651、イルガキュアー184、ダロキュアー1173、イルガキュアー907、イルガキュアー369(以上チバスペシャルティーケミカルズ社製)、或いはカヤキュアーDETXカヤキュアーITX(以上日本化薬社製)、ベンゾフェノン、アセトフェノン、4‐4’ビスジエチルアミノベンゾフェノン、ベンジル、ベンゾイン、ベンゾインエチルエーテ ル、等から1種もしくは2種以上を混合して用いられる。更に増感剤としてn−ブチルアミン、トリエチルアミン、p−ジメチルアミノ安息香酸エチル等の脂肪族アミン、芳香族アミンを併用しても良い。光硬化開始剤、増感剤は活性エネルギー先硬化型OPニス中に1〜20重量%使用される。
【0010】
樹脂は、インキ皮膜強度向上、インキの紙への固着性向上、等の目的で必要に応じ使用する事ができる。アルキッド樹脂、ポリエステル樹脂、石油樹脂等の他に、(メタ)アクリル酸変成された樹脂を用いる事もある。(メタ)アクリル酸変成された樹脂としては、一分子内に(メタ)アクリロイル基を有するウレタン系(メタ)アクリレート、エポキシ系(メタ)アクリレート、ポリオール系(メタ)アクリレート等がある。
また、必要に応じ、各種添加剤も本発明の効果を損なわない範囲で用いる事ができる。例えば、対摩擦性向上剤、酸化防止剤、裏移り防止剤、防腐剤、更に製造時、或いは貯蔵時のゲル化防止の目的でハイドロキノン等の熱重合禁止剤、等を使用する事が出来る。
【0011】
【実施例】
次に実施例により本発明を説明する。尚、例中「部」、「%」は重量基準であり、又、添加量とはPTFE等の添加量をOPニス中の固形分に対する重量%で示したものである。
【0012】

Figure 0003892940
【0013】
Figure 0003892940
【0014】
Figure 0003892940
【0015】
Figure 0003892940
【0016】
Figure 0003892940
(注)PTFEは(株)セイシン企業製FTワックスFT−301(粒子3.9μm)を使用。
【0017】
各OPニス0.3ccをRIテスターにてコート紙に印刷した。
また各コーティングニスはバーコーターNo.7にてコート紙に塗布した。
硬化条件は 空冷メタルハライドランプ 120w/cm 1灯
コンベアー速度20m/分
にて紫外線を照射した。
又、表中の試験法は以下の通りに行った。
(撥水性)
市販のコーヒーを印刷物に1滴垂らし、1分間後、布で拭き取った時の印刷物の「べた付き度合い」を5段階評価で表示した(優)5--1(劣)。
(耐摩擦性)
各印刷物をサザーランドラブテスター4ポンドの荷重で100回擦り、印刷物の傷付き度合いを5段階評価で表示した。表示法は上記撥水性に同じ。
【0018】
【発明の効果】
本発明のOPニス組成物は撥水性、拭き取り性、耐摩擦性を向上させることができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an active energy ray-curable overblind varnish composition that is particularly excellent in water repellency, stain resistance and friction resistance.
[0002]
[Prior art]
In general, overprint varnish (hereinafter OP varnish) is used to improve the gloss of the printed material and protect the film of the printed material.
In particular, active energy ray-curable OP varnishes such as ultraviolet rays and electron beams are frequently used after printing with printing ink colors (yellow, red, indigo, black, etc.) because of their excellent film strength. However, when beverages such as coffee, sauces, alcohols, etc. spill on the printed matter, the stain resistance may remain on the surface, or the printed matter may remain sticky, and the stain resistance may be insufficient.
Further, when exposed to wind and rain such as a poster, the film of the printed matter may be affected due to insufficient water repellency.
Furthermore, ordinary printed materials do not always have sufficient resistance to impact and scratches. Conventionally, these various performances could be obtained by sticking a transparent film to a printed material. However, in recent years, there has been an increasing demand for satisfying these various performances at low cost by printing.
Conventionally, polyethylene varnish and silicon-based additives have been used for OP varnish as countermeasures. However, market demand for OP varnish performance has been increasing year by year, and it is difficult to say that it has sufficient performance. is the current situation.
[0003]
[Problems to be solved by the invention]
The present invention provides an active energy ray-curable OP varnish composition excellent in water repellency, stain resistance, friction resistance and the like.
[0004]
[Means for Solving the Problems]
That is, the present invention relates to an active energy ray-curable overprint varnish composition comprising polytetrafluoroethylene particles in a monomer or oligomer having an ethylenically unsaturated double bond.
[0005]
Furthermore, the present invention relates to an active energy ray-curable overprint varnish composition comprising polytetrafluoroethylene particles having a volume average particle diameter of 2 to 6 micrometers in a monomer or oligomer having an ethylenically unsaturated double bond. 2. The active energy ray-curable overcoat according to claim 1, wherein the content of the polytetrafluoroethylene particles is 10 to 100% by weight in a solid content ratio of the active energy ray-curable overprint varnish excluding the polytetrafluoroethylene particles. The present invention relates to a print varnish composition.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, the particle diameter of polytetrafluoroethylene (hereinafter abbreviated as PTFE) is a volume average particle diameter obtained by a laser diffraction method, a Coulter counter method, or the like. The PTFE particles have a volume average particle diameter of 2 to 6 micrometers, and more preferably, 45% by weight or more of all particles have a volume average particle diameter of 2 to 6 micrometers. When the volume average particle size is less than 2 micrometers, the PTFE particles are trapped in the OP varnish film and do not protrude onto the OP varnish film, and the friction resistance deteriorates. When the volume average particle size is larger than 6 micrometers, the dispersibility of PTFE in OP varnish is poor and the fluidity is also deteriorated, and PTFE wax is deposited on a printing plate or blanket. Furthermore , PTFE particles are added in an amount of 10 to 100% by weight in the solid content ratio in the composition of OP varnish. If the content is less than 10% by weight, sufficient water repellency, stain resistance and friction resistance cannot be obtained. If the content is more than 100% by weight, the pile resistance and leveling properties are insufficient, and the gloss is also greatly deteriorated. .
[0007]
The active energy ray curable OP varnish of the present invention is cured by ultraviolet rays or an electron beam, and is generally used for offset printing, silk screen printing, letterpress printing, etc. I just need it. As a basic composition of these, a monomer or oligomer having an ethylenically unsaturated double bond may contain a photoinitiator, a resin, a sensitizer, an extender pigment, and an additive as necessary.
[0008]
As the binder component of the OP varnish of the present invention, at least one monomer or oligomer having an ethylenically unsaturated double bond is used.
Specifically, (meth) acrylic acid esters, such as ethylene glycol di (metha) acrylate, propylene glycol di (meth) acrylate, 1,4 butanediol di (meth) acrylate, polyethylene glycol di (meth) acrylate, trimethylol (Meth) acrylates of polyhydric alcohols such as propane tri (meth) acrylate, ditrimethylolpropane tetra (meth) acrylate, pentaerythritol tri (tetra) (meth) acrylate, dipentaerythritol penta (hexa) (meth) acrylate, etc. There is.
[0009]
As the photocuring initiator used in the present invention, commercially available products can be used. For example, Irgacure 651, Irgacure 184, Darocur 1173, Irgacure 907, Irgacure 369 (above Ciba Specialty Chemicals ), or Kayacure DETX , Kayacure ITX (above Nippon Kayaku), benzophenone, acetophenone, 4 -4 'Bisdiethylaminobenzophenone, benzyl, benzoin, benzoin ethyl ether, etc. are used alone or in combination. Furthermore, aliphatic amines such as n-butylamine, triethylamine, ethyl p-dimethylaminobenzoate, and aromatic amines may be used in combination as sensitizers. A photocuring initiator and a sensitizer are used in an active energy precured OP varnish of 1 to 20% by weight.
[0010]
The resin can be used as necessary for the purpose of improving the strength of the ink film and improving the adhesion of the ink to paper. In addition to alkyd resin, polyester resin, petroleum resin, etc., (meth) acrylic acid-modified resin may be used. Examples of (meth) acrylic acid-modified resins include urethane (meth) acrylate, epoxy (meth) acrylate, and polyol (meth) acrylate having a (meth) acryloyl group in one molecule.
Moreover, various additives can also be used in the range which does not impair the effect of this invention as needed. For example, antifriction improvers, antioxidants, set-off inhibitors, preservatives, and thermal polymerization inhibitors such as hydroquinone can be used for the purpose of preventing gelation during production or storage.
[0011]
【Example】
Next, an example explains the present invention. In the examples, “parts” and “%” are based on weight, and the addition amount indicates the addition amount of PTFE or the like in weight% with respect to the solid content in the OP varnish.
[0012]
Figure 0003892940
[0013]
Figure 0003892940
[0014]
Figure 0003892940
[0015]
Figure 0003892940
[0016]
Figure 0003892940
(Note) PTFE uses FT wax FT-301 (particle diameter 3.9 μm ) manufactured by Seishin Corporation.
[0017]
0.3 cc of each OP varnish was printed on the coated paper with an RI tester.
Each coating varnish is a bar coater no. 7 was applied to the coated paper.
Curing conditions were as follows: air-cooled metal halide lamp 120 w / cm, one-light conveyor speed 20 m / min.
The test methods in the table were performed as follows.
(Water repellency)
One drop of commercially available coffee was dropped on the printed material, and after 1 minute, the “stickiness” of the printed material when wiped with a cloth was displayed in a five-point scale (excellent) 5--1 (inferior).
(Abrasion resistance)
Each printed matter was rubbed 100 times with a load of 4 pounds by the Sutherland Love Tester, and the degree of scratches on the printed matter was indicated by a five-step evaluation. The display method is the same as the above water repellency.
[0018]
【The invention's effect】
The OP varnish composition of the present invention can improve water repellency, wiping property and abrasion resistance.

Claims (1)

エチレン性不飽和二重結合を有するモノマー又はオリゴマーに体積平均粒径2〜6マイクロメーターであるポリテトラフルオロエチレン粒子を含有してなる活性エネルギー線硬化型オーバープリントニス組成物において、ポリテトラフルオロエチレン粒子の含有量が、ポリテトラフルオロエチレン粒子を除いた活性エネルギー線硬化型オーバープリントニスの固形分比で10〜100重量%であることを特徴とする活性エネルギー線硬化型オーバープリントニス組成物。An active energy ray-curable overprint varnish composition comprising a polytetrafluoroethylene particle having a volume average particle diameter of 2 to 6 micrometers in a monomer or oligomer having an ethylenically unsaturated double bond. The active energy ray-curable overprint varnish composition, wherein the content of the particles is 10 to 100% by weight in terms of the solid content ratio of the active energy ray-curable overprint varnish excluding the polytetrafluoroethylene particles.
JP15819697A 1997-06-16 1997-06-16 Active energy ray-curable overprint varnish composition Expired - Fee Related JP3892940B2 (en)

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JP3892940B2 true JP3892940B2 (en) 2007-03-14

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* Cited by examiner, † Cited by third party
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JP3848334B2 (en) * 2004-04-14 2006-11-22 富士重工業株式会社 Mixed paint and method for producing the same
JP5560575B2 (en) * 2009-03-27 2014-07-30 東洋インキScホールディングス株式会社 Overprint varnish composition for offset and printed matter
CN107043572A (en) * 2017-03-21 2017-08-15 广州市恒星电线氟塑有限公司 A kind of typing printing ink of resistance to wiping and its manufacture craft for fluorinated polymer material

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