JP6401023B2 - Concentrated fountain solution for lithographic printing - Google Patents
Concentrated fountain solution for lithographic printing Download PDFInfo
- Publication number
- JP6401023B2 JP6401023B2 JP2014235640A JP2014235640A JP6401023B2 JP 6401023 B2 JP6401023 B2 JP 6401023B2 JP 2014235640 A JP2014235640 A JP 2014235640A JP 2014235640 A JP2014235640 A JP 2014235640A JP 6401023 B2 JP6401023 B2 JP 6401023B2
- Authority
- JP
- Japan
- Prior art keywords
- fountain solution
- printing
- formula
- lithographic printing
- water
- 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.)
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- 239000000203 mixture Substances 0.000 claims description 35
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- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 11
- 239000002904 solvent Substances 0.000 claims description 10
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Landscapes
- Printing Plates And Materials Therefor (AREA)
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Description
本発明は、平版印刷用濃縮湿し水組成物に関し、更に詳しくは、印刷物の汚れや各種印刷トラブルを生じない油性印刷およびＵＶ印刷、ＣＴＰ版を用いた印刷に好ましく使用できる平版印刷用濃縮湿し水組成物に関するものである。 The present invention relates to a concentrated fountain solution for lithographic printing, and more specifically, concentrated humectant for lithographic printing that can be preferably used for oil-based printing, UV printing, and printing using CTP plates, which do not cause stains or various printing troubles. The present invention relates to a saltwater composition.
平版印刷は、画線部に対応する箇所を感脂性面とし非画線部に対応する箇所を親水性面とした刷版を用いて印刷を行う印刷方式である。
即ち、インキを感脂性の画線部に付着させ、湿し水を親水性の非画線部に付着させ、インキと水との互いに反撥しあう性質を利用して印刷を行う方式である。この印刷方式では、印刷版上のインキは通常湿し水を含んだエマルジョン状態になっているが、このエマルジョンは含水率などが適切な状態にあり、安定している場合にのみ良好な印刷品質が得られる。
一般には、印刷版上の湿し水が不足する場合は非画線部にインキが付着し地汚れの原因となる。又、湿し水を過剰に与え過ぎると、インキの過度の乳化を招きいわゆる水負けの原因となり、画線部が薄くなったり、乾燥を遅らせて、いわゆる裏移りが発生するようになる。特に、紫外線硬化印刷インキはその組成上、乳化しやすく上記傾向が強い。
Lithographic printing is a printing method in which printing is performed using a printing plate in which a portion corresponding to an image area is a oil-sensitive surface and a portion corresponding to a non-image area is a hydrophilic surface.
In other words, the ink is adhered to the oil-sensitive image area, the dampening water is adhered to the hydrophilic non-image area, and printing is performed by utilizing the properties of ink and water repelling each other. In this printing method, the ink on the printing plate is usually in an emulsion state containing dampening water, but this emulsion has good print quality only when the moisture content is in an appropriate state and is stable. Is obtained.
Generally, when dampening water on the printing plate is insufficient, ink adheres to the non-image area and causes soiling. Further, if the fountain solution is excessively applied, excessive emulsification of the ink is caused, causing so-called water loss, and the image area is thinned or the drying is delayed, so-called back-off occurs. In particular, UV curable printing inks tend to emulsify due to their composition, and the above tendency is strong.
そこで、従来、湿し水には、イソプロピルアルコール（以下ＩＰＡと略記する）特有の動的表面張力の低減作用及び増粘作用を利用するためにＩＰＡが添加され、これによりインキと湿し水とのバランスを保ち、優れた印刷適正と印刷品質を確保してきた。しかし、ＩＰＡを湿し水に添加して使用する場合、ＩＰＡの取り扱いについては、労働安全衛生法、消防法、下水道法等により制約を受けるという問題点があった。 Therefore, conventionally, IPA is added to the fountain solution in order to utilize the dynamic surface tension reducing action and thickening action peculiar to isopropyl alcohol (hereinafter abbreviated as IPA). Maintaining a good balance and ensuring excellent print quality and print quality. However, when IPA is added to dampening water and used, there is a problem that handling of IPA is restricted by the Industrial Safety and Health Act, the Fire Service Act, the Sewerage Act, and the like.
一方、油性印刷と呼ばれる酸化重合硬化印刷、またＵＶ印刷と呼ばれる紫外線硬化印刷において、網点再現性、印刷を長く続けるロングラン運転における適正乳化維持が良好に確保できるもの、いわゆる１）水棒からみ、２）ローラー剥げ、３）網点絡み、４）紙むけ、５）地汚れを解決することが不可欠である。 On the other hand, in oxidative polymerization curing printing called oil-based printing, and ultraviolet curing printing called UV printing, halftone dot reproducibility, which can ensure good emulsification maintenance in long run operation that continues printing, so-called 1) viewed from the water rod, 2) Roller peeling, 3) dot entanglement, 4) paper peeling, and 5) it is indispensable to solve background stains.
また、上記印刷物の仕上がり上の問題やイソプロピルアルコールの使用による作業環境及び安全衛生面での問題のほかにも、排水規制物質であるリン化合物の問題などがあり、これらの問題を解決するために、種々の平版印刷用濃縮湿し水組成物の提案がなされている（特許文献１〜３）。 In addition to the above-mentioned problems in the finished printed matter and problems in the working environment and safety and health due to the use of isopropyl alcohol, there are problems with phosphorus compounds that are wastewater control substances. To solve these problems Various concentrated fountain solution compositions for lithographic printing have been proposed (Patent Documents 1 to 3).
本発明の目的は、上記「地汚れ」の問題の中でも、特に印刷機停止後再稼働時に発生する「ストップ汚れ」と称される微細状点として非画線部にインキが付着し、これが紙面に対し汚れとなる問題に対し改善した平版印刷用濃縮湿し水組成物を提供することである。
本発明の別の目的は、上述の課題を解決し、更にオフセット輪転機の排ガス燃焼装置に充填されている触媒の被毒作用を有し、かつ排水規制物質であるリン化合物を全く含有し
ない、いわゆる無リンタイプの平版印刷用濃縮湿し水組成物を提供することである。
本発明の更に別の目的は、上述の課題を解決し、更に上記１）水棒からみ、２）ローラー剥げ、３）網点絡み、４）紙むけ、５）地汚れの問題を解消するための平版印刷用濃縮湿し水組成物を提供することである。
そして本発明の目的は更に上記平版印刷用濃縮湿し水組成物を水で希釈して得られる、平版印刷用湿し水を提供することである。
The object of the present invention is that, among the above-mentioned problems of “background stain”, ink adheres to the non-image area as a fine point called “stop stain” that occurs particularly when the printing press is stopped and restarted. It is an object of the present invention to provide a concentrated fountain solution for lithographic printing which is improved against the problem of soiling.
Another object of the present invention is to solve the above-mentioned problems, and further has a poisoning action of a catalyst filled in an exhaust gas combustion apparatus of an offset rotary press, and does not contain any phosphorus compound which is a wastewater regulating substance. A so-called phosphorus-free concentrated fountain solution for lithographic printing is provided.
Still another object of the present invention is to solve the above-mentioned problems, and further to solve the above-mentioned problems 1) entangle the water rod, 2) peel off the roller, 3) entangle the dots, 4) peel off the paper, and 5) ground stain. A fountain solution for lithographic printing is provided.
Another object of the present invention is to provide a fountain solution for lithographic printing obtained by diluting the concentrated fountain solution for lithographic printing with water.
本発明者らは、濃縮湿し水組成物に関し鋭意研究を重ねた結果、必須成分として特定の水溶性高分子を用いることにより、上記の問題が解消でき、且つ濃縮化しても安定性に優れた安全な平版印刷用濃縮湿し水組成物が得られることを見出し、本発明を完成させるに至った。 As a result of extensive research on the concentrated fountain solution composition, the present inventors can solve the above problems by using a specific water-soluble polymer as an essential component, and are excellent in stability even when concentrated. The present inventors have found that a safe fountain solution for lithographic printing can be obtained, and have completed the present invention.
即ち、本発明は、以下の［１］乃至［３］に関する。
［１］下記式（Ｉ）で示されるカチオン化ヒドロキシエチルセルロースを必須成分として含有する平版印刷用濃縮湿し水組成物。
式（Ｉ）：
ｎは１５万乃至１５０万の整数を表す｛但し、Ｒの少なくとも１つは上記式（Ａ）で表されるカチオン性基を表す｝。］
［２］溶剤として３−メトキシ−３−メチル−１−ブタノール及び／又はメトキシブタノールを必須成分として含有する、［１］に記載の平版印刷用濃縮湿し水組成物。
［３］更に下記式（ＩＩ）で示されるアセチレングリコール酸化エチレン付加物を必須成分として含有する、［１］又は［２］に記載の平版印刷用濃縮湿し水組成物。
式（ＩＩ）：
［４］［１］乃至［３］のいずれか１つに記載の平版印刷用濃縮湿し水組成物に対して質量比で３乃至２００倍の水で希釈して得られる、平版印刷用湿し水。
That is, the present invention relates to the following [1] to [3].
[1] A concentrated fountain solution composition for lithographic printing, containing cationized hydroxyethyl cellulose represented by the following formula (I) as an essential component.
Formula (I):
n represents an integer of 150,000 to 1,500,000 (provided that at least one of R represents a cationic group represented by the above formula (A)). ]
[2] The concentrated fountain solution composition for lithographic printing according to [1], containing 3-methoxy-3-methyl-1-butanol and / or methoxybutanol as an essential component as a solvent.
[3] The concentrated fountain solution for lithographic printing according to [1] or [2], further comprising an acetylene glycol ethylene oxide adduct represented by the following formula (II) as an essential component.
Formula (II):
[4] Lithographic printing dampness obtained by diluting with 3 to 200 times the weight ratio of the concentrated fountain solution for lithographic printing according to any one of [1] to [3] Shimizu.
本発明の平版印刷用濃縮湿し水組成物は、必須成分として上記式（Ｉ）で示されるカチオン化ヒドロキシエチルセルロースを含有することにより、地汚れの問題の中でも、特にストップ汚れの発生を防止することができる。
また、本発明の平版印刷用濃縮湿し水組成物は、溶剤として３−メトキシ−３−メチル−１−ブタノール及び／又はメトキシブタノールを含有することにより、上記ストップ汚れの発生を防止する効果に加えて、沈降物や浮遊物が生じ難く、液安定性が良好である。
さらに、本発明の平版印刷用濃縮湿し水組成物は、上記式（ＩＩ）で示されるアセチレングリコール酸化エチレン付加物を含有することにより、上記ストップ汚れの発生を防止する効果、及び液安定性の効果に加えて、上記１）水棒からみ、２）ローラー剥げ、３）網点絡み、４）紙むけ、５）地汚れの問題を解消することができ、品質（印刷物の汚れ、濃度ムラ及び色ムラなど）が良好な印刷物を得ることができる。
斯かる効果は、平版印刷用濃縮湿し水としての適用において得られるものである。
The concentrated fountain solution composition for lithographic printing according to the present invention contains the cationized hydroxyethyl cellulose represented by the above formula (I) as an essential component, thereby preventing the occurrence of stop stains, especially among the problems of background stains. be able to.
Further, the concentrated fountain solution composition for lithographic printing according to the present invention contains 3-methoxy-3-methyl-1-butanol and / or methoxybutanol as a solvent, thereby preventing the occurrence of the stop stain. In addition, sediment and suspended solids are hardly generated and the liquid stability is good.
Further, the concentrated fountain solution composition for lithographic printing according to the present invention contains the acetylene glycol ethylene oxide adduct represented by the above formula (II), thereby preventing the occurrence of the stop stain and the liquid stability. In addition to the above effects, 1) tangling with water rod, 2) peeling of roller, 3) tangling of dots, 4) peeling of paper, 5) background stains can be solved, and quality (printing stains, density unevenness) In addition, a printed matter with excellent color unevenness can be obtained.
Such an effect is obtained in application as a concentrated fountain solution for lithographic printing.
ここで、上述の１）水棒からみ、２）ローラー剥げ、３）網点絡み、４）紙むけ、５）地汚れ、それぞれについて更に説明する。
上記１）の水棒からみとは、水元ローラーの表面にインキが付着してそれが水棒に絡み、水供給のバランスがくずれてしまうという現象である。この原因としては、過剰乳化によるインキの流動性低下によるものと考えられている。
上記２）のローラー剥げとは、インキローラーのインキが剥がれ、インキの転移が適性に行われなくなる現象である。これはインキの水吸収能力（乳化能力）が不足するため、水がインキローラー上で余り、ローラーが親水化してしまうことでインキが剥がれるものと考えられている。
上記３）の網点絡みとは、網点間の非画線部に水が良好に行きわたらないことや、水が更新されないため、印刷物に非画線部として転写されるべき部位がインキで汚れてしまい、再現性不良となる現象である。
上記４）の紙むけ（ピッキング）とは、印刷中に紙表面が変形・剥離する現象である。基本的に紙むけは、紙のセルロースの絡み合い、長さ、塗被剤に関する製紙技術の問題であるが、水またはインキの浸透により紙が脆弱化することも原因の一つになると考えられている。
上記５）の地汚れとは、印刷時に版面で起こる現象で版面非画線部への水の供給が不充分であることや、版非画線部へのインキの付着を抑制する、いわゆる不感脂化材の効能不
足などが原因と考えられている。
本発明は印刷物において要求される品質、すなわち、印刷物の汚れ、濃度ムラ及び色ムラなどがほとんど生じないという効果をも奏するものである。
Here, 1) water rod entanglement, 2) roller peeling, 3) dot entanglement, 4) paper peeling, and 5) background contamination will be further described.
The tangling of the water rod in the above 1) is a phenomenon in which ink adheres to the surface of the water source roller and gets entangled with the water rod, causing the balance of water supply to be lost. The cause of this is thought to be due to a decrease in fluidity of the ink due to excessive emulsification.
The roller peeling in 2) is a phenomenon in which the ink on the ink roller is peeled off and the ink transfer is not performed properly. This is thought to be due to insufficient water absorption (emulsification ability) of the ink, so that water is left on the ink roller and the roller becomes hydrophilic, so that the ink is peeled off.
The dot entanglement in the above 3) means that water does not pass well between the non-image areas between the dots, and water is not renewed. This is a phenomenon that becomes dirty and results in poor reproducibility.
The paper peeling (picking) of 4) is a phenomenon in which the paper surface is deformed and peeled during printing. Basically, paper peeling is a problem in papermaking technology related to the entanglement, length, and coating agent of paper cellulose, but it is thought that one of the causes is that paper becomes brittle due to water or ink penetration. Yes.
The background stain 5) is a phenomenon that occurs on the printing plate during printing, and is insufficiently supplied with water to the non-printing area of the printing plate, or suppresses the adhesion of ink to the non-printing printing area. This is thought to be due to the lack of efficacy of the fat.
The present invention also has an effect that the quality required in the printed material, that is, the printed material is hardly contaminated, density unevenness, color unevenness and the like.
湿し水は通常商業ベースでは、濃縮化したものを商品化することが一般的であり、通常、印刷作業時にこの濃縮化したものを水道水などで所定の濃度に希釈し、使用する。本発明の平版印刷用濃縮湿し水組成物は、該組成物に対して質量比で、例えば３０乃至２００倍、特に５０乃至２００倍の水で希釈して使用される。 The fountain solution is usually commercialized on a commercial basis. Usually, the fountain solution is diluted to a predetermined concentration with tap water or the like during printing work. The concentrated fountain solution composition for lithographic printing of the present invention is used by diluting with water at a mass ratio of, for example, 30 to 200 times, particularly 50 to 200 times.
本発明の濃縮湿し水組成物の必須成分である上記式（Ｉ）で示されるカチオン化ヒドロキシエチルセルロースは不感脂化剤として作用し、版非画線部を保護する性質を有し、インキによる非画線部の感脂化を防ぐ作用に非常に優れている。
上記式（Ｉ）で示されるカチオン化ヒドロキシエチルセルロースとしては、上記式（Ａ）で表されるカチオン性基の導入率が、無水グルコース当り０．１乃至１．０のものが使用できる。また、上記式（Ａ）中のＸ-が表すアニオン性基は特に限定されず、具体的には、アルキル硫酸イオン、硫酸イオン、リン酸イオン、アルキル炭酸イオン、及びハロゲン化物イオン等が挙げられる。
上記式（Ｉ）で示されるカチオン化ヒドロキシエチルセルロースの具体例としては、ダイセルファインケム（株）製ジェルナーＱＨシリーズ、東邦化学工業(株)製カチナールシリーズなどが挙げられる。
The cationized hydroxyethyl cellulose represented by the above formula (I), which is an essential component of the concentrated fountain solution composition of the present invention, acts as a desensitizing agent and has a property of protecting the non-image area of the plate. It is very excellent in preventing the non-image area from being sensitized.
As the cationized hydroxyethyl cellulose represented by the above formula (I), those having an introduction rate of the cationic group represented by the above formula (A) of 0.1 to 1.0 per anhydroglucose can be used. In addition, the anionic group represented by X − in the above formula (A) is not particularly limited, and specific examples include alkyl sulfate ion, sulfate ion, phosphate ion, alkyl carbonate ion, and halide ion. .
Specific examples of the cationized hydroxyethyl cellulose represented by the above formula (I) include a gelner QH series manufactured by Daicel Finechem Co., Ltd., a kachinal series manufactured by Toho Chemical Co., Ltd., and the like.
上記式（Ｉ）で示されるカチオン化ヒドロキシエチルセルロースを好適に使用できる範囲は、濃縮湿し水組成物全質量に対して０．０１乃至５質量％、より好ましくは０．１乃至１質量％の範囲である。高濃度で配合した際には、ローラー禿の発生要因や、画線部へのインキ着肉不良を生じる可能性がある。 The range in which the cationized hydroxyethyl cellulose represented by the above formula (I) can be suitably used is 0.01 to 5% by mass, more preferably 0.1 to 1% by mass with respect to the total mass of the concentrated fountain solution. It is a range. When blended at a high concentration, there is a possibility that the cause of roller wrinkles and poor ink deposition on the image area.
また、本発明の濃縮湿し水組成物は、溶剤として３−メトキシ−３−メチル−１−ブタノール及び／又はメトキシブタノールを必須成分として含有することができる。これらの溶剤は、ＩＰＡ代替溶剤として作用し、版面洗浄性、印刷機の水上がり向上としての作用をなすものである。
これらの溶剤は単独で又は２種併用してもよく、その含有量（２種併用する場合は、その合計量）は、濃縮湿し水組成物全質量に基づいて１乃至９０質量％の範囲が適切であり、より好ましくは３０乃至７０質量％の範囲である。
Moreover, the concentrated fountain solution composition of the present invention can contain 3-methoxy-3-methyl-1-butanol and / or methoxybutanol as an essential component as a solvent. These solvents act as IPA substitute solvents, and serve to improve the plate surface cleanability and the rising of the printing press.
These solvents may be used alone or in combination of two types, and the content thereof (the total amount when used in combination of two types) is in the range of 1 to 90% by mass based on the total mass of the concentrated fountain solution. Is suitable, more preferably in the range of 30 to 70% by weight.
さらに、本発明の濃縮湿し水組成物は、上記（ＩＩ）で示されるアセチレングリコール酸化エチレン付加物を必須成分として含有することができる。該アセチレングリコール酸化エチレン付加物は、特に動的表面張力低下作用に優れ、瞬時の濡れ性と浸透性を付与し、適切な乳化性、版面洗浄性向上、水上がり性向上の働きをもたらす。
該アセチレングリコール酸化エチレン付加物の含有量は、濃縮湿し水組成物の全質量に基づいて０．１乃至１５質量％の範囲が適切である。より好ましくは１乃至５質量％の範囲である。
Furthermore, the concentrated fountain solution composition of the present invention can contain an acetylene glycol ethylene oxide adduct represented by the above (II) as an essential component. The acetylene glycol ethylene oxide adduct is particularly excellent in dynamic surface tension lowering action, imparts instantaneous wettability and permeability, and brings about functions of appropriate emulsifying properties, plate surface cleaning properties, and water lifting properties.
The content of the acetylene glycol ethylene oxide adduct is suitably in the range of 0.1 to 15% by mass based on the total mass of the concentrated fountain solution composition. More preferably, it is in the range of 1 to 5% by mass.
上記アセチレングリコール酸化エチレン付加物は、ｃ及びｄの数がそれぞれ独立して０乃至３０を表すものから選択使用できるが、ｃ＋ｄの数が０乃至３０であるものが好ましく、より好ましくは３乃至１０である。具体例としては、エア・プロダクツ・アンド・ケミカルズ製サーフィノールシリーズ、及びダイノールシリーズ、日信化学工業(株)製オルフィンシリーズなどが挙げられる。
本発明では、上記式（ＩＩ）においてａ＝０、ｂ＝０、ｃ＝０、及びｄ＝０を表す３，６‐ジメチル−４−オクチン−３，６−ジオール、同じく式（ＩＩ）でａ＝１，ｂ＝１の
２，４，７，９，−テトラメチル−５−デシン−４，７−ジオールのエチレンオキサイド（ＥＯ）３．５モル付加物、並びに１０モル付加物が好適に使用できる。
The above acetylene glycol ethylene oxide adduct can be selected and used from those in which the numbers of c and d each independently represent 0 to 30, preferably those in which c + d is 0 to 30, more preferably 3 to 10. It is. Specific examples include the Surfynol series manufactured by Air Products and Chemicals, the Dynol series, and the Orphine series manufactured by Nissin Chemical Industry Co., Ltd.
In the present invention, 3,6-dimethyl-4-octyne-3,6-diol representing a = 0, b = 0, c = 0, and d = 0 in the above formula (II), Preferably, ethylene oxide (EO) 3.5 mol adduct and 10 mol adduct of 2,4,7,9, -tetramethyl-5-decyne-4,7-diol with a = 1, b = 1 Can be used.
上記３成分の混合使用は、印刷版の画線部及び非画線部中でも網点部を覆う薄膜状湿し水に含まれる水や溶剤が乾燥によって蒸発した場合に、その残渣が湿し水によって可及的速やかに除去されることによって、網点再現性を顕著に向上させる効果ともに、印刷機再稼働時に発生するストップ汚れ解消を特異的にもたらす。 The above three components are mixed and used when the water or solvent contained in the thin film fountain solution covering the halftone dot portion evaporates by drying even in the image area and non-image area of the printing plate. By removing as quickly as possible, the effect of remarkably improving the halftone dot reproducibility as well as the elimination of stop dirt generated when the printing press is restarted are brought about specifically.
商業印刷用湿し水は一般的には酸性領域、すなわちｐＨ３乃至６の範囲で使用するのが望ましい。本発明の濃縮湿し水組成物から調製される湿し水はｐＨ値をこの範囲に安定的に維持するため、有機酸又は無機酸並びにそれらの塩からなるｐＨ緩衝剤を添加することができる。
ｐＨ緩衝剤としては、従来から使用されている有機酸及び／又は無機酸又はそれらの塩類の使用を制限するものではない。有機酸としては、例えばクエン酸、アスコルビン酸、リンゴ酸、酒石酸、乳酸、グルコン酸、酢酸、ヒドロキシ酢酸、シュウ酸、マロン酸、レブリン酸、スルファニル酸、ｐ−トルエンスルホン酸、フィチン酸、有機スルホン酸等が挙げられる。無機酸としては、例えばリン酸、硝酸、硫酸、ポリリン酸等が挙げられる。更にこれら有機酸及び／又は無機酸のアルカリ金属塩、アルカリ土類金属塩、或いはアンモニウム塩、有機アミン塩などが用いられる。
Commercial printing fountain solutions are generally desirable for use in the acidic region, i.e., in the pH range of 3-6. The dampening solution prepared from the concentrated dampening solution composition of the present invention can be added with a pH buffer comprising an organic acid or an inorganic acid and salts thereof in order to stably maintain the pH value within this range. .
The pH buffering agent is not limited to the use of organic acids and / or inorganic acids or salts thereof conventionally used. Examples of the organic acid include citric acid, ascorbic acid, malic acid, tartaric acid, lactic acid, gluconic acid, acetic acid, hydroxyacetic acid, oxalic acid, malonic acid, levulinic acid, sulfanilic acid, p-toluenesulfonic acid, phytic acid, and organic sulfone. An acid etc. are mentioned. Examples of inorganic acids include phosphoric acid, nitric acid, sulfuric acid, and polyphosphoric acid. Further, alkali metal salts, alkaline earth metal salts, ammonium salts, organic amine salts, and the like of these organic acids and / or inorganic acids are used.
一方、本発明においては、従来から使用されているｐＨ緩衝剤の使用を制限するものではないが、排水規制を受けないｐＨ緩衝剤並びに印刷機の排ガス処理装置に設置されている充填触媒を被毒しないｐＨ緩衝剤、いわゆるリン化合物を含まない無リンタイプのｐＨ緩衝剤の使用が好ましい。
即ち、ｐＨ緩衝剤として、ジカルボン酸及びトリカルボン酸及びその金属塩の混合物を使用することが、さらに好ましい。
本発明において、ｐＨ緩衝剤としてのこの混合物の含有量は濃縮湿し水組成物全質量に対して０．１乃至１０質量％の範囲が好ましい。より好ましくは０．５乃至５質量％である。
On the other hand, the present invention does not limit the use of conventionally used pH buffering agents, but covers the pH buffering agents that are not subject to wastewater regulation and the filling catalyst installed in the exhaust gas treatment device of a printing press. The use of non-poisonous pH buffering agents, so-called phosphorus-free pH buffering agents not containing phosphorus compounds, is preferred.
That is, it is more preferable to use a mixture of dicarboxylic acid, tricarboxylic acid and a metal salt thereof as a pH buffer.
In the present invention, the content of the mixture as a pH buffering agent is preferably in the range of 0.1 to 10% by mass relative to the total mass of the concentrated fountain solution. More preferably, it is 0.5 to 5% by mass.
本発明の濃縮湿し水組成物には、以上の成分の他に更に（ａ）有機溶剤、（ｂ）界面活性剤、（ｃ）キレート化合物、（ｄ）防腐剤、（ｅ）防錆剤、（ｆ）着色剤、（ｇ）消泡剤、（ｈ）印刷版の整面剤等を必要に応じて添加することができる。 In addition to the above components, the concentrated fountain solution composition of the present invention further includes (a) an organic solvent, (b) a surfactant, (c) a chelate compound, (d) an antiseptic, and (e) a rust inhibitor. , (F) a colorant, (g) an antifoaming agent, (h) a surface-control agent for a printing plate, and the like can be added as necessary.
本発明では、動的表面張力の低下、不感脂化剤の可溶化、界面活性剤の曇点向上、或いはインキ乳化率を適正な範囲に調節するために、３−メチル−３−メトキシ−１−ブタノール、メトキシブタノール以外の（ａ）有機溶剤を補助剤として添加できる。添加できる有機溶剤は、種々あるが、安全衛生面の点からグリコール系溶剤が好ましい。
グリコール系有機溶剤のうち、好ましく使用できるプロピレングリコールエーテル系有機溶剤としては、ジプロピレングリコールモノプロピルエーテル、トリプロピレングリコールモノプロピルエーテル、ジプロピレングリコールモノイソプロピルエーテル、トリプロピレングリコールモノイソプロピルエーテル、プロピレングリコールモノブチルエーテル、ジプロピレングリコールモノブチルエーテル、トリプロピレングリコールモノブチルエーテル、プロピレングリコールモノイソブチルエーテル、ジプロピレングリコールモノイソブチルエーテル、トリプロピレングリコールモノイソブチルエーテル、プロピレングリコールモノターシャリブチルエーテル、ジプロピレングリコールモノターシャリブチルエーテル、及びトリプロピレングリコールモノターシャリブチルエーテルなどが挙げられる。
エチレングリコールエーテル系有機溶剤としては、ジエチレングリコールモノメチルエーテル、トリエチレングリコールモノメチルエーテル、ポリエチレングリコールモノメチ
ルエーテル、ジエチレングリコールモノエチルエーテル、トリエチレングリコールモノエチルエーテル、エチレングリコールモノイソブチルエーテル、ジエチレングリコールモノイソブチルエーテル、トリエチレングリコールモノイソブチルエーテル、エチレングリコールモノプロピルエーテル、ジエチレングリコールモノプロピルエーテル、トリエチレングリコールモノプロピルエーテル、エチレングリコールモノブチルエーテル、エチレングリコールモノターシャリブチルエーテル、ジエチレングリコールモノブチルエーテル、ジエチレングリコールモノターシャリブチルブチルエーテル、トリエチレングリコールモノブチルエーテル、及びトリエチレングリコールモノターシャリブチルエーテルなどが挙げられる。
これらの有機溶剤は単独でも、又は２種以上併用することもでき、その添加量は濃縮湿し水組成物の全質量に基づいて１乃至８０質量％の範囲が適切であり、より好ましくは３０乃至７０質量％の範囲である。
In the present invention, 3-methyl-3-methoxy-1 is used in order to lower the dynamic surface tension, solubilize the desensitizing agent, improve the cloud point of the surfactant, or adjust the ink emulsification rate to an appropriate range. -(A) Organic solvents other than butanol and methoxybutanol can be added as auxiliary agents. Although there are various organic solvents that can be added, glycol solvents are preferred from the viewpoint of safety and health.
Among the glycol organic solvents, propylene glycol ether organic solvents that can be preferably used include dipropylene glycol monopropyl ether, tripropylene glycol monopropyl ether, dipropylene glycol monoisopropyl ether, tripropylene glycol monoisopropyl ether, propylene glycol mono Butyl ether, dipropylene glycol monobutyl ether, tripropylene glycol monobutyl ether, propylene glycol monoisobutyl ether, dipropylene glycol monoisobutyl ether, tripropylene glycol monoisobutyl ether, propylene glycol monotertiary butyl ether, dipropylene glycol monotertiary butyl ether, and Tripropylene Such as recall mono tertiary butyl ether, and the like.
The ethylene glycol ether organic solvents include diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, polyethylene glycol monomethyl ether, diethylene glycol monoethyl ether, triethylene glycol monoethyl ether, ethylene glycol monoisobutyl ether, diethylene glycol monoisobutyl ether, triethylene glycol. Monoisobutyl ether, ethylene glycol monopropyl ether, diethylene glycol monopropyl ether, triethylene glycol monopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monotertiary butyl ether, diethylene glycol monobutyl ether, diethylene glycol monotertiary -Butyl ether, triethylene glycol monobutyl ether, and the like triethylene glycol mono t-butyl ether.
These organic solvents can be used alone or in combination of two or more, and the addition amount is suitably in the range of 1 to 80% by mass, more preferably 30 based on the total mass of the concentrated fountain solution composition. It is the range of thru | or 70 mass%.
本発明に使用できる（ｂ）界面活性剤は、インキ乳化率の調節や濡れ性向上の補助剤として添加してもよい。
好ましく使用できる界面活性剤の種類は非イオン型界面活性剤であり、中でもポリオキシアルキルエーテル類、ポリオキシエチレンアルキルフェニルエーテル類、ポリオキシエチレンポリスチリルフェニルエーテル類、ポリオキシエチレンポリオキシプロピレンアルキルエーテル類、ポリオキシエチレン−ポリオキシプロピレンブロックポリマー（Ｅｏ−Ｐｏブロックポリマー）類等が好ましく使用できる。
これらの界面活性剤は単独でも、又は２種以上併用することもでき、湿し水使用時の発泡（起泡）を抑制する観点から、その添加量は濃縮湿し水組成物全質量に基づいて１．０質量％以下が適当である。
The surfactant (b) that can be used in the present invention may be added as an auxiliary agent for adjusting the ink emulsification rate and improving wettability.
The types of surfactant that can be preferably used are nonionic surfactants, among which polyoxyalkyl ethers, polyoxyethylene alkylphenyl ethers, polyoxyethylene polystyryl phenyl ethers, polyoxyethylene polyoxypropylene alkyl ethers And polyoxyethylene-polyoxypropylene block polymers (Eo-Po block polymers) can be preferably used.
These surfactants can be used singly or in combination of two or more. From the viewpoint of suppressing foaming (foaming) when using the fountain solution, the amount added is based on the total mass of the concentrated fountain solution. 1.0% by mass or less is appropriate.
本発明には、（ｃ）キレート化合物を添加することができる。通常、濃縮湿し水組成物は水道水、井戸水等を加えて３０から２００倍に希釈して使用される。この際、希釈する水道水や井戸水に含まれる炭酸カルシウムが印刷に悪影響を与え、印刷適性や印刷物品質を悪化させる原因となる場合もある。
このような場合には、キレート化合物を添加すれば上記問題は解消できる。
本発明において好ましく使用できるものとしては、例えば、エチレンジアミンテトラ酢酸、ジエチレントリアミンペンタ酢酸、トリエチレンテトラミンヘキサ酢酸、ヒドロキシエチルエチレンジアミントリ酢酸及びこれらのカリウム塩、ナトリウム塩、アンモニウム塩；ニトリロトリ酢酸、そのナトリウム塩；１−ヒドロキシエタン−１，１−ジホスホン酸、そのナトリウム塩、そのカリウム塩などが挙げられる。
これらの添加量は使用する水道水や井戸水の硬度によって異なるが、濃縮湿し水組成物全質量に基づいて０．００１乃至１．０質量％が適当である。
In the present invention, (c) a chelate compound can be added. Usually, the concentrated fountain solution composition is diluted 30 to 200 times with tap water, well water or the like. At this time, calcium carbonate contained in the tap water or well water to be diluted may adversely affect printing, and may cause deterioration in printability and print quality.
In such a case, the above problem can be solved by adding a chelate compound.
As what can be preferably used in the present invention, for example, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, triethylenetetraminehexaacetic acid, hydroxyethylethylenediaminetriacetic acid and potassium salts, sodium salts, ammonium salts thereof; nitrilotriacetic acid, sodium salts thereof; 1-hydroxyethane-1,1-diphosphonic acid, its sodium salt, its potassium salt, etc. are mentioned.
The amount of addition varies depending on the hardness of tap water and well water used, but 0.001 to 1.0% by mass is appropriate based on the total mass of the concentrated fountain solution.
本発明には、（ｄ）防腐剤を必要に応じて添加することができる。湿し水中にカビが増殖すると、印刷に悪影響を与え、印刷物を汚す原因となることもある。
本発明で好ましく使用できる防腐剤としては、イミダゾール誘導体、デヒドロ酢酸ナトリウム、４−イソチアゾリン−３−オン誘導体、四級アンモニウム塩、トリアゾール誘導体、オキサゾール又はオキサジンの誘導体、ブロモニトロプロパノール、１，１−ジブロモ−１−ニトロエタノール、３−ブロモ−３−ニトロペンタン等が挙げられる。これらの防腐剤の種々の調剤液が市販されており、これらの調剤液を使用することもできる。
好ましい添加量は細菌、酵母、カビに対して安定に効力を発揮する量であって、カビの種類によっても異なるが、濃縮湿し水組成物全質量に対して０．１乃至３．０質量％の範囲が好ましい。また、種々のカビ、細菌、酵母に対して薬効のある２種以上の防腐剤を併用することもできる。
In the present invention, (d) a preservative can be added as necessary. If mold grows in the fountain solution, printing may be adversely affected and the printed matter may be soiled.
Preservatives that can be preferably used in the present invention include imidazole derivatives, sodium dehydroacetate, 4-isothiazolin-3-one derivatives, quaternary ammonium salts, triazole derivatives, oxazole or oxazine derivatives, bromonitropropanol, 1,1-dibromo. Examples include -1-nitroethanol and 3-bromo-3-nitropentane. Various preparation liquids of these preservatives are commercially available, and these preparation liquids can also be used.
The preferred addition amount is an amount that exerts stability against bacteria, yeast, and mold, and varies depending on the type of mold, but is 0.1 to 3.0 mass based on the total mass of the concentrated dampening water composition. % Range is preferred. Also, two or more kinds of preservatives having medicinal properties against various molds, bacteria and yeasts can be used in combination.
本発明では、印刷機械装置の腐蝕を防止するために（ｅ）防錆剤を添加することができ
る。本発明に使用できる（ｅ）防錆剤としては、例えばベンゾトリアゾール、５−メチルベンゾトリアゾール、チオサリチル酸、ベンゾイミダゾール及びその誘導体等が挙げられる。
In the present invention, (e) a rust inhibitor can be added to prevent corrosion of the printing machine apparatus. Examples of the (e) rust inhibitor that can be used in the present invention include benzotriazole, 5-methylbenzotriazole, thiosalicylic acid, benzimidazole, and derivatives thereof.
本発明に使用できる（ｆ）着色剤としては、食品用色素が好ましく使用できる。例えば、黄色色素としてはＣＩ Ｎｏ．１９１４０，１５９８５、赤色色素としてはＣＩ Ｎｏ．１６１８５，４５４３０，１６２５５，４５３８０，４５１００、紫色色素としてはＣＩ Ｎｏ．４２６４０、青色色素としてはＣＩ Ｎｏ．４２０９０，７３０１５、緑色色素としてはＣＩ Ｎｏ．４２０９５等が挙げられる。 As the colorant (f) that can be used in the present invention, a food dye can be preferably used. For example, CI no. 19140, 15985, and CI No. 16185, 45430, 16255, 45380, 45100, and CI no. 42640, as a blue pigment, CI No. 42090, 73015, CI no. 42095 or the like.
本発明では、循環ラインを備えた湿し水調製槽内及び水舟内での発泡を抑制するため、（ｇ）消泡剤を添加することが好ましい。本発明で使用する消泡剤としては、消泡速度の速さからシリコーン系消泡剤が好ましく、乳化分散型及び可溶化型のいずれのものも使用できる。 In the present invention, it is preferable to add (g) an antifoaming agent in order to suppress foaming in the dampening water preparation tank and the water boat provided with the circulation line. As the antifoaming agent used in the present invention, a silicone-based antifoaming agent is preferable because of its high defoaming speed, and any of an emulsified dispersion type and a solubilized type can be used.
本発明の濃縮湿し水組成物には必要に応じて更に（ｈ）印刷版アルミニウム基盤の整面剤として、水溶性硝酸塩を添加してもよい。
具体例として、硝酸ナトリウム、硝酸カリウム、硝酸アンモニウム、硝酸マグネシウム、硝酸カルシウム、硝酸ベリリウム、硝酸アルミニウム、硝酸亜鉛、硝酸ジルコニウム、硝酸ニッケル、硝酸マンガン、硝酸クロム等が挙げられる。これらの塩は１種もしくは２種以上併用してもよい。これらの塩は濃縮湿し水組成物全質量に対して０．１乃至２０質量％の範囲で使用される。
If necessary, the concentrated fountain solution composition of the present invention may further contain (h) a water-soluble nitrate as a surface conditioner for the printing plate aluminum base.
Specific examples include sodium nitrate, potassium nitrate, ammonium nitrate, magnesium nitrate, calcium nitrate, beryllium nitrate, aluminum nitrate, zinc nitrate, zirconium nitrate, nickel nitrate, manganese nitrate, and chromium nitrate. These salts may be used alone or in combination of two or more. These salts are used in the range of 0.1 to 20% by mass with respect to the total mass of the concentrated fountain solution.
次に本発明を実施例及び比較例を挙げて更に具体的に説明するが、本発明はこれらの例に限られるものではない。 EXAMPLES Next, although an Example and a comparative example are given and this invention is demonstrated more concretely, this invention is not limited to these examples.
実施例１〜６
表１に記載の組成に従って、各種濃縮湿し水組成物を調製した。単位はグラム（ｇ）であり、純水を加えて全量を１０００ｍＬとした。
Examples 1-6
Various concentrated fountain solution compositions were prepared according to the composition described in Table 1. The unit was gram (g), and pure water was added to make up a total volume of 1000 mL.
上記の如く調製した実施例１〜６の濃縮湿し水組成物について、下記（ａ）のように液の濃縮化適性を評価した。更に実施例１〜６で調製した濃縮湿し水組成物を、水道水を用いて油性印刷は２％の濃度に、ＵＶ（紫外線）印刷は４％の濃度に希釈し、ハイデルベルグ社製印刷機（枚葉４色機）にて印刷を行い、（ｂ）〜（ｆ）の項目について評価を行った。それらの結果を表２及び３に示した。 The concentrated fountain solution compositions of Examples 1 to 6 prepared as described above were evaluated for liquid concentrating suitability as shown in (a) below. Further, the concentrated fountain solution composition prepared in Examples 1 to 6 was diluted with tap water to a concentration of 2% for oil-based printing and 4% for UV (ultraviolet) printing. Printing was performed using a (sheet-fed 4-color machine), and the items (b) to (f) were evaluated. The results are shown in Tables 2 and 3.
（ａ）液の濃縮化適性
上記の様に調合した濃縮湿し水組成物を１００ｍＬバイアル瓶に入れ、液の均一混合性及び貯蔵安定性を調べた。
・１ヶ月間放置しても変化無し ：Ａ
・成分の沈降物、浮遊物が微量発生する ：Ｂ
・成分の沈降物、浮遊物が大量発生する ：Ｃ
(A) Concentration suitability of liquid The concentrated fountain solution composition prepared as described above was put into a 100 mL vial, and the uniform mixing property and storage stability of the liquid were examined.
・ No change even if left for 1 month: A
・ Slight amounts of sediment and suspended matter are generated: B
・ A large amount of sediment and suspended matter is generated: C
（ｂ）耐ローラー剥げ性
印刷部数５，０００枚、１０，０００枚、２０，０００枚で印刷機を一時止め、インキ供給ローラー表面上のインキ膜の剥げ状態を目視観察した。
・印刷部数５０，０００枚以上でもローラー剥げなし ：Ａ
・印刷部数１０，０００以上５０，０００枚未満の間でローラー剥げ発生 ：Ｂ
・印刷部数１０，０００枚未満でローラー剥げ発生 ：Ｃ
(B) Roller peeling resistance The printing press was temporarily stopped with 5,000, 10,000, and 20,000 printed copies, and the state of peeling of the ink film on the surface of the ink supply roller was visually observed.
・ No roller peeling even when the number of printed copies is 50,000 or more: A
-Rolling off between 10,000 and less than 50,000 printed copies: B
-Roller peeling occurs when the number of printed copies is less than 10,000 sheets: C
（ｃ）耐水棒からみ性
上記のように印刷機を一時止め、湿し水を汲み上げる水棒（水元ローラ）の表面上のインキの付着状態を目視観察した。
・印刷部数５０，０００枚以上でもインキ絡みなし ：Ａ
・印刷部数１０，０００以上５０，０００枚未満の間でインキ絡みなし ：Ｂ
・印刷部数１０，０００枚未満でインキ絡み発生 ：Ｃ
(C) Water resistance sticking property The printing press was temporarily stopped as described above, and the adhesion state of the ink on the surface of the water stick (water source roller) for drawing up the dampening water was visually observed.
・ Even if the number of printed copies is 50,000 or more, ink is not considered: A
・ Ink is not considered between 10,000 and 50,000 printed copies: B
・ Ink entanglement occurs when the number of printed copies is less than 10,000 sheets: C
（ｄ）耐ストップ汚れ性
印刷機を１時間、２時間、４時間・・・それぞれ停止した後、印刷版の非画線部を目視観察すると共に印刷を再開した後の印刷物の非画線部の点状汚れを調査した。
・３時間以上停止してもストップ汚れ発生無し ：Ａ
・２以上３時間未満停止するとストップ汚れ発生 ：Ｂ
・１時間未満の時間で停止するとストップ汚れ発生 ：Ｃ
(D) Stop smear resistance Non-image area of the printed material after the printing machine is stopped for 1 hour, 2 hours, 4 hours, etc., respectively, and the non-image area of the printing plate is visually observed and printing is resumed. The dot-like stain was investigated.
-No stop contamination even after 3 hours of stoppage: A
-Stop dirt occurs when stopped for 2 to 3 hours: B
-Stop dirt occurs when stopped in less than 1 hour: C
（ｅ）耐網点からみ汚れ性
５万部印刷を行った後の印刷物網点部をルーペで観察し、網点部内非画線部の汚れを調べた。
・網点内非画線部に汚れ無し ：Ａ
・網点内非画線部の一部分に汚れ発生 ：Ｂ
・網点内非画線部の５０％以上に汚れ発生 ：Ｃ
(E) Stain resistance due to halftone dot resistance The halftone dot portion of the printed material after 50,000 copies were printed was observed with a magnifying glass, and the stain on the non-image area in the halftone dot portion was examined.
・ No dirt on non-painted area in halftone dot: A
-Dirt on part of the non-image area in the halftone dot: B
-Dirt is generated in 50% or more of the non-image area in the halftone dot: C
（ｆ）印刷物品質
印刷物の汚れ、濃度ムラ、色ムラなどを調べた。
・印刷品質が良好 ：Ａ
・印刷品質に問題がある ：Ｂ
(F) Print quality The print was checked for stains, density unevenness, color unevenness and the like.
-Good print quality: A
・ There is a problem with print quality: B
比較例１〜５
表４に記載の組成に従って比較例１〜５の濃縮湿し水組成物をそれぞれ調製した。
Concentrated fountain solutions of Comparative Examples 1 to 5 were prepared according to the compositions described in Table 4, respectively.
上記の様に調製した比較例１〜５の濃縮湿し水組成物を用いて、実施例１〜６と同じ印刷機にて印刷を行い、同様の評価を行った。それらの結果を表５及び表６に示した。 Using the concentrated fountain solution compositions of Comparative Examples 1 to 5 prepared as described above, printing was performed on the same printer as Examples 1 to 6, and the same evaluation was performed. The results are shown in Tables 5 and 6.
結果は次の通りであった。
比較例１の一般的に好んで使用される溶剤であるｔ−ブトキシエタノールを使用した組成においては、沈降物が大量に発生し、液組成の維持が困難であった。これに対し、上記ｔ−ブトキシエタノールの替りに３−メチル−３−メトキシ−１−ブタノール又はメトキシブタノールを用いて、比較例１とほぼ同じ組成で調製した実施例３と実施例６では、この様な沈降は発生しなかった。
The results were as follows.
In the composition using t-butoxyethanol which is a generally preferred solvent of Comparative Example 1, a large amount of precipitate was generated, and it was difficult to maintain the liquid composition. On the other hand, in Example 3 and Example 6 prepared with substantially the same composition as Comparative Example 1 using 3-methyl-3-methoxy-1-butanol or methoxybutanol instead of the t-butoxyethanol, No such sedimentation occurred.
カチオン化していないヒドロキシエチルセルロースを使用した比較例２と比較例３においては、ストップ汚れが１時間以下の時間で発生し、印刷版を洗浄しなければ高品質の印刷物は得られなかった。これに対し、本発明の濃縮湿し水組成物の必須成分であるカチオン化ヒドロキシエチルセルロースを使用した実施例１〜６においては、ストップ汚れが発生せず、高品質の印刷物が得られた。 In Comparative Example 2 and Comparative Example 3 in which non-cationized hydroxyethyl cellulose was used, stop staining occurred in a time of 1 hour or less, and a high-quality printed matter could not be obtained unless the printing plate was washed. On the other hand, in Examples 1 to 6 using cationized hydroxyethyl cellulose, which is an essential component of the concentrated fountain solution composition of the present invention, no stop stain was generated, and a high-quality printed matter was obtained.
式（ＩＩ）で示されるアセチレングリコール酸化エチレン付加物を使用せず、エチレンオキサイド−プロピレンオキサイドブロックポリマー系界面活性剤のみを使用した比較例４と比較例５では、網点からみ汚れが発生し、高品質な印刷部が得られなかった。また比較例５ではエチレンオキサイド−プロピレンオキサイドブロックポリマー系界面活性剤濃度を増やしたことにより、網点からみ汚れ性の良化がみられたが、弊害として、水棒からみが発生した。これに対し、式（ＩＩ）で示されるアセチレングリコール酸化エチレン付加物を使用した実施例１〜６では網点からみ汚れは発生せず、高品質の印刷物が得られた。 In Comparative Example 4 and Comparative Example 5 in which only the ethylene oxide-propylene oxide block polymer surfactant was used without using the acetylene glycol ethylene oxide adduct represented by the formula (II), stains were generated from halftone dots, A high-quality printed part could not be obtained. In Comparative Example 5, the concentration of the ethylene oxide-propylene oxide block polymer surfactant was increased, so that the smearing improved from the halftone dot, but as a harmful effect, the water rod was observed. On the other hand, in Examples 1 to 6 using the acetylene glycol ethylene oxide adduct represented by the formula (II), no smudge occurred from the halftone dots, and high-quality printed matter was obtained.
以上より、実施例１〜６の濃縮湿し水組成物を使用した場合には、油性印刷、ＵＶ印刷とも上述したような不具合の発生はなく、高品質の印刷物が得られた。 From the above, when the concentrated fountain solutions of Examples 1 to 6 were used, neither the oil-based printing nor the UV printing produced the above-described problems, and a high-quality printed matter was obtained.
Claims (2)
溶剤として３−メトキシ−３−メチル−１−ブタノール及び／又はメトキシブタノールを必須成分として含有し、
更に下記式（ＩＩ）で示されるアセチレングリコール酸化エチレン付加物を必須成分として含有する、平版印刷用濃縮湿し水組成物。
式（Ｉ）：
ｎは１５万乃至１５０万の整数を表す｛但し、Ｒの少なくとも１つは上記式（Ａ）で表さ
れるカチオン性基を表す｝。］
式（ＩＩ）：
Containing 3-methoxy-3-methyl-1-butanol and / or methoxybutanol as an essential component as a solvent;
Furthermore , the concentrated fountain solution composition for lithographic printing , which contains an acetylene glycol ethylene oxide adduct represented by the following formula (II) as an essential component .
Formula (I):
n represents an integer of 150,000 to 1,500,000 (provided that at least one of R represents a cationic group represented by the above formula (A)). ]
Formula (II):
A fountain solution for lithographic printing obtained by diluting the concentrated fountain solution composition for lithographic printing according to claim 1 with water having a mass ratio of 3 to 200 times.
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