EP0111136A2 - Fountain solution additive for lithographic printing - Google Patents

Fountain solution additive for lithographic printing Download PDF

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Publication number
EP0111136A2
EP0111136A2 EP83110755A EP83110755A EP0111136A2 EP 0111136 A2 EP0111136 A2 EP 0111136A2 EP 83110755 A EP83110755 A EP 83110755A EP 83110755 A EP83110755 A EP 83110755A EP 0111136 A2 EP0111136 A2 EP 0111136A2
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EP
European Patent Office
Prior art keywords
fountain solution
solution additive
diol
dimethyl
wetting agents
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.)
Granted
Application number
EP83110755A
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German (de)
French (fr)
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EP0111136A3 (en
EP0111136B1 (en
Inventor
Norbert Steinhöfel
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Bernd Schwegmann & Co KG GmbH
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Bernd Schwegmann & Co KG GmbH
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B41N3/08—Damping; Neutralising or similar differentiation treatments for lithographic printing formes; Gumming or finishing solutions, fountain solutions, correction or deletion fluids, or on-press development

Definitions

  • the present invention relates to a fountain solution additive for offset printing, which contains wetting agents, pH-regulating substances, humectants, optionally film formers, softening agents, preservatives and solvents.
  • the present invention has set itself the task of providing an improved fountain solution additive for offset printing, which leads to lower water flow and the resulting printing advantages, ensures a quick adjustment of the emulsification conditions, facilitates the washability of the dampening rollers, enables a fast free running of the printing plate and thereby leads to a reduction in waste, the ink deposits on the rubber blanket in the non-image area and does not foam. Furthermore, the invention has for its object to develop a fountain solution that contains no water or only a small amount of water, so that it can be made in paste, powder or tablet form.
  • wetting agents can additionally contain certain amounts of other customary wetting agents, in particular those which are also available in solid form or can be converted into solid form.
  • a solid acidic buffer is used as the pH-regulating substance.
  • a mixture of trisodium citrate and citric acid has proven particularly useful.
  • polyalcohols having 5 or 6 carbon atoms are used as humectants.
  • Hexite has proven particularly useful.
  • the fountain solution additive according to the invention preferably contains ethylenediaminetetraacetic acid as the sodium salt as softening agent. Potassium sorbate has proven particularly useful as a preservative.
  • a liquid fountain solution concentrate can contain 0.1 to 50 parts of group A wetting agent. The concentration depends solely on the solvent. Not all Group A wetting agents are clearly soluble in higher concentrations in pure water, while solvents such as ethanol or isopropanol are able to clearly dissolve the Group A wetting agents in a ratio of 1: 1. A solvent mixture of ethanol or isopropanol to water in a ratio of 30:70 is able to clearly dissolve sufficient amounts of group A wetting agent.
  • the group A wetting agents in pure form are water-soluble in a sufficient concentration in ready-to-use fountain solution, even without the addition of alcohols.
  • a liquid concentrate can contain between 0.01 and 2 parts of group A wetting agent, 10-90 parts of water and, if desired, 0 to 30 parts of alcohol being used as the solvent.
  • a fountain solution additive according to the invention in powder form can contain 0.05-5 parts of group A wetting agent in addition to 2-90 parts of buffer salt, 0-60 parts of softening agent, 0-80 parts of humectant, 0-80 parts of film former and 0.2-5 parts Preservative.
  • group A wetting agent in addition to 2-90 parts of buffer salt, 0-60 parts of softening agent, 0-80 parts of humectant, 0-80 parts of film former and 0.2-5 parts Preservative.
  • Such a powder can easily be compressed into tablets. These tablets dissolve quickly and easily in water and thus allow easy and simple dosing and preparation of the fountain solution for ⁇ offset printing. However, this powder can also be dissolved directly in water without difficulty or offered in the form of a paste with only a low water content will.
  • the advantage of the powder and tablet form, but also the paste form is the small storage volume, the smaller packaging, the reduction in freight costs and the stability.
  • a content of 0.001-0.1 g of wetting agent per liter of fountain solution leads to the advantages of the fountain solution compared to conventional formulations which can be achieved according to the invention, namely the improvement of the color, water and emulsification behavior, the enabling of extremely low water flow and the resulting printing advantages.
  • the dampening rollers can be cleaned faster and more thoroughly, and the re-contamination of the dampening rollers covered is reduced.
  • the printing plates run free extremely quickly, thereby reducing the amount of waste.
  • color deposits on the blanket in the non-image area are also significantly reduced.
  • group A wetting agent preferably 0.5 to 2 parts, with 2 to 90 parts of buffer salt (trisodium citrate / citric acid in a ratio of 5: 1 to 2: 1), 0.2 to 5 parts, preferably 1 to 3 parts of potassium sorbate, 0 to 80 parts, preferably 20 to 40 parts of sorbitol as a humectant, 0 to 60 parts, preferably 2 to 20 parts of sodium ethylenediaminetetraacetic acid as a softening agent and 0 to 80 parts, preferably 0 to 5 parts of gum arabic as a film former in a powder mixer mixed until homogeneous.
  • the powder can be instantized or compressed into tablets.
  • the powder is added in amounts of 1 to 10 g, preferably 3 to 5 g, per liter of fountain solution.

Abstract

1. A fountain solution additive for offset printing containing wetting agents, pH-controlling substances, moisturizers, optionally film-forming agents, optionally softeners, optionally preservatives and optionally solvents, characterized in that it contains, as wetting agent(s), one or more of the substances a) 3,5-dimethyl-1-hexyn-3-ol ; b) 3,6-dimethyl-4-octyne-3,6-diol ; c) 2,4,7,9-tetramethyl-5-decyne-4,7-diol ; d) ethoxylation products of a), b) and/or c) or combinations of the substances a), b), c) and/or d) with further conventional wetting agents.

Description

Gegenstand der vorliegenden Erfindung ist ein Feuchtwasser-Zusatz für den Offsetdruck, welcher Netzmittel, pH-regulierende Substanzen, Feuchthaltemittel, ggf. Filmbildner, Enthärtungsmittel, Konservierungsmittel und Lösungsmittel enthält.The present invention relates to a fountain solution additive for offset printing, which contains wetting agents, pH-regulating substances, humectants, optionally film formers, softening agents, preservatives and solvents.

Beim Offsetdruck werden dem Feuchtwasser verschiedene Zusätze zugegeben, um das Drucken zu erleichtern und die Qualität der Druckerzeugnisse zu erhöhen. Diese Zusätze werden bisher entweder vom Drucker selbst beigemischt oder in Form von Konzentraten in den Handel gebracht. Diese Konzentrate enthalten meist schwache Säuren oder einen Puffer, Feuchthaltemittel wie Glyzerin oder Glykole, Filmbildner wie Gummiarabicum, Konservierungsmittel, zum Teil auch Enthärtungsmittel und Netzmittel sowie ggf. Alkohole wie Ethanol oder Isopropanol. Sämtliche Feuchtwasser-Konzentrate enthalten erhebliche Mengen Wasser.In offset printing, various additives are added to the fountain solution to make printing easier and to increase the quality of the printed products. So far, these additives have either been added by the printer itself or sold in the form of concentrates. These concentrates usually contain weak acids or a buffer, humectants such as glycerin or glycols, film formers such as gum arabic, preservatives, some also softeners and wetting agents, and possibly alcohols such as ethanol or isopropanol. All fountain solution concentrates contain considerable amounts of water.

Die vorliegende Erfindung hat sich die Aufgabe gestellt, einen verbesserten Feuchtwasser-Zusatz für den Offsetdruck zu liefern, welcher zu niedrigerer Wasserführung und daraus resultierenden drucktechnischen Vorteilen führt, eine schnelle Einstellung der Emulgationsverhältnisse gewährleistet, die Auswaschbarkeit der Feuchtwalzen erleichtert, ein schnelles Freilaufen der Druckplatte ermöglicht und dadurch zu einer Verminderung der Makulatur führt, die Farbablagerungen auf dem Gummituch im bildfreien Bereich vermindert und dabei nicht schäumt. Weiterhin hat sich die Erfindung die Aufgabe gestellt, einen Feuchtwasser-Zusatz zu entwickeln, der kein Wasser oder nur geringe Mengen Wasser enthält, so daß er in Pasten-, Pulver- oder Tablettenform hergestellt werden kann.The present invention has set itself the task of providing an improved fountain solution additive for offset printing, which leads to lower water flow and the resulting printing advantages, ensures a quick adjustment of the emulsification conditions, facilitates the washability of the dampening rollers, enables a fast free running of the printing plate and thereby leads to a reduction in waste, the ink deposits on the rubber blanket in the non-image area and does not foam. Furthermore, the invention has for its object to develop a fountain solution that contains no water or only a small amount of water, so that it can be made in paste, powder or tablet form.

Diese Aufgabe wurde überraschenderweise gelöst durch einen Feuchtwasser-Zusatz, welcher Netzmittel, pH-regulierende Substanzen, Feuchthaltemittel, ggf. Filmbildner, Enthärtungsmittel, Konservierungsmittel und ggf. Lösungsmittel enthält und dadurch gekennzeichnet ist, daß er als Netzmittel eine oder mehrere Substanzen der Gruppe A bestehend aus

  • a) Polypropylenglykol (400 - 2000)
  • b) 3,5 Dimethyl-l-hexin-3-ol
  • c) 3,6 Dimethyl-4-octin-3,6-diol
  • d) 2,4,7,9-Tetramethyl-5-decin-4,7-diol
  • e) Ethoxylierungsprodukte von b, c und/oder d
  • f) Kombinationen von a, b, c, d und/oder e mit weiteren üblichen Netzmitteln

enthält.This object was surprisingly achieved by adding a fountain solution which contains wetting agents, pH-regulating substances, humectants, optionally film formers, softening agents, preservatives and optionally solvents and is characterized in that it comprises one or more substances of group A as wetting agents out
  • a) polypropylene glycol (400 - 2000)
  • b) 3,5 dimethyl-l-hexin-3-ol
  • c) 3,6 dimethyl-4-octyne-3,6-diol
  • d) 2,4,7,9-tetramethyl-5-decyne-4,7-diol
  • e) ethoxylation products of b, c and / or d
  • f) combinations of a, b, c, d and / or e with other customary wetting agents

contains.

Die Netzmittel der Gruppe A haben die folgenden Formeln:

Figure imgb0001
Figure imgb0002
Figure imgb0003
Figure imgb0004

  • e) in den Ethoxylierungsprodukten von b, c und d sind die Hydroxyl-Gruppen teilweise oder vollständig ersetzt durch die Gruppe -[0 - CH2-CH2]m-OH
    • (m = 1 - 40)
Group A wetting agents have the following formulas:
Figure imgb0001
Figure imgb0002
Figure imgb0003
Figure imgb0004
  • e) in the ethoxylation products of b, c and d, the hydroxyl groups are partially or completely replaced by the group - [0 - CH 2 -CH 2 ] m -OH
    • (m = 1 - 40)

Ggf. können diese Netzmittel zusätzlich gewisse Mengen weiterer üblicher Netzmittel enthalten, insbesondere solche, die auch in fester Form erhältlich sind oder in feste Form überführt werden können.Possibly. These wetting agents can additionally contain certain amounts of other customary wetting agents, in particular those which are also available in solid form or can be converted into solid form.

Als pH-regulierende Substanz wird erfindungsgemäß ein fester saurer Puffer verwendet. Ein Gemisch aus Trinatriumcitrat und Citronensäure hat sich besonders bewährt.According to the invention, a solid acidic buffer is used as the pH-regulating substance. A mixture of trisodium citrate and citric acid has proven particularly useful.

Als Feuchthaltemittel werden erfindungsgemäß Polyalkohole mit 5 oder 6 Kohlenstoffatomen verwendet. Besonders bewährt hat sich Hexit.According to the invention, polyalcohols having 5 or 6 carbon atoms are used as humectants. Hexite has proven particularly useful.

Der erfindungsgemäße Feuchtwasser-Zusatz enthält als Enthärtungsmittel vorzugsweise Ethylendiamintetraessigsäure als Natriumsalz. Als Konservierungsmittel hat sich insbesondere Kaliumsorbat bewährt.The fountain solution additive according to the invention preferably contains ethylenediaminetetraacetic acid as the sodium salt as softening agent. Potassium sorbate has proven particularly useful as a preservative.

Gegenstand der vorliegenden Erfindung ist somit ein Feuchtwasser-Zusatz für den Offsetdruck, enthaltend Netzmittel, pH-regulierende Substanzen, Feuchthaltemittel, ggf. Filmbildner, Enthärtungsmittel, Konservierungsmittel und ggf. Lösungsmittel, dadurch gekennzeichnet, daß er als Netzmittel eine oder mehrere Substanzen der Gruppe A bestehend aus

  • a) Polypropylenglykol (400 - 2000)
  • b) 3,5 Dimethyl-l-hexin-3-ol
  • c) 3,6 Dimethyl-4-octin-3,6-diol
  • d) 2,4,7,9-Tetramethyl-5-decin-4,7-diol
  • e) Ethoxylierungsprodukte von b, c und/oder d
  • f) Kombinationen von a, b, c, d und/oder e mit weiteren üblichen Netzmitteln

enthält.The present invention thus relates to a fountain solution additive for offset printing Wetting agents, pH-regulating substances, humectants, if appropriate film formers, softening agents, preservatives and optionally solvents, characterized in that it comprises one or more Group A substances as wetting agent
  • a) polypropylene glycol (400 - 2000)
  • b) 3,5 dimethyl-l-hexin-3-ol
  • c) 3,6 dimethyl-4-octyne-3,6-diol
  • d) 2,4,7,9-tetramethyl-5-decyne-4,7-diol
  • e) ethoxylation products of b, c and / or d
  • f) combinations of a, b, c, d and / or e with other customary wetting agents

contains.

Ein besonderer Vorteil dieses Zusatzes ist, daß er in Pasten-, Pulver- oder Tablettenform hergestellt werden kann..Ein weiterer Gegenstand der vorliegenden Erfindung ist die Verwendung von einer oder mehrerer Substanzen der Gruppe A bestehend aus

  • a) Polypropylenglykol (400 - 2000)
  • b) 3,5 Dimethyl-1-hexin-3-ol
  • c) 3,6 Dimethyl-4-octin-3,6-diol
  • d) 2,4,7,9-Tetramethyl-5-decin-4,7-diol
  • e) Ethoxylierungsprodukte von b, c und/oder d
  • f) Kombinationen von'a, b, c, d und/oder e mit weiteren üblichen Netzmitteln

als Feuchtwasser-Zusatz beim Offsetdruck und insbesondere deren Verwendung in Feuchtwasser-Konzentraten in Pasten-, Pulver- oder Tablettenform.A particular advantage of this additive is that it can be produced in paste, powder or tablet form. Another object of the present invention is the use of one or more substances from group A consisting of
  • a) polypropylene glycol (400 - 2000)
  • b) 3,5 dimethyl-1-hexin-3-ol
  • c) 3,6 dimethyl-4-octyne-3,6-diol
  • d) 2,4,7,9-tetramethyl-5-decyne-4,7-diol
  • e) ethoxylation products of b, c and / or d
  • f) combinations of a, b, c, d and / or e with other customary wetting agents

as a fountain solution additive in offset printing and especially its use in fountain solution concentrates in paste, powder or tablet form.

Die Mengen der einzelnen Komponenten des erfindungsgemäßen Feuchtwasser-Zusatzes sind nicht kritisch. So kann ein flüssiges Feuchtwasser-Konzentrat 0,1 bis 50 Teile Netzmittel der Gruppe A enthalten. Die Konzentration hängt allein von dem Lösungsmittel ab. Im reinen Wasser sind nicht alle Netzmittel der Gruppe A in höheren Konzentrationen klar löslich, während Lösungsmittel wie Ethanol oder Isopropanol in der Lage sind, die Netzmittel der Gruppe A im Verhältnis 1:1 klar zu lösen. Ein Lösungsmittelgemisch Ethanol oder Isopropanol zu Wasser im Verhältnis 30:70 ist in der Lage ausreichende Mengen Netzmittel der Gruppe A klar zu lösen. Die Netzmittel der Gruppe A in reiner Form sind in gebrauchsfertigem Feuchtwasser auch ohne Zusatz von Alkoholen in ausreichender Konzentration wasserlöslich.The amounts of the individual components of the Invention according to the fountain solution additive are not critical. A liquid fountain solution concentrate can contain 0.1 to 50 parts of group A wetting agent. The concentration depends solely on the solvent. Not all Group A wetting agents are clearly soluble in higher concentrations in pure water, while solvents such as ethanol or isopropanol are able to clearly dissolve the Group A wetting agents in a ratio of 1: 1. A solvent mixture of ethanol or isopropanol to water in a ratio of 30:70 is able to clearly dissolve sufficient amounts of group A wetting agent. The group A wetting agents in pure form are water-soluble in a sufficient concentration in ready-to-use fountain solution, even without the addition of alcohols.

Ein flüssiges Konzentrat kann erfindungsgemäß zwischen 0,01 und 2 Teile Netzmittel der Gruppe A enthalten, wobei als Lösungsmittel 10 - 90 Teile Wasser und gewünschtenfalls 0 bis 30 Teile Alkohol zur Anwendung kommen können.According to the invention, a liquid concentrate can contain between 0.01 and 2 parts of group A wetting agent, 10-90 parts of water and, if desired, 0 to 30 parts of alcohol being used as the solvent.

Ein erfindungsgemäßer Feuchtwasser-Zusatz in Pulverform kann 0,05 - 5 Teile Netzmittel der Gruppe A enthalten neben 2 - 90 Teilen Puffersalz, 0 - 60 Teilen Enthärtungsmittel, 0 - 80 Teilen Feuchthaltemittel, 0 - 80 Teilen Filmbildner und 0,2 - 5 Teilen Konservierungsmittel. Ein solches Pulver kann ohne weiteres zu Tabletten verpreßt werden. Diese Tabletten lösen sich rasch und leicht in Wasser auf und gestatten somit eine leichte und einfache Dosierung und Zubereitung des Feuchtwassers für den ^ Offsetdruck. Dieses Pulver kann aber auch ohne Schwierigkeiten direkt in Wasser gelöst werden oder in Form einer Paste nur mit geringem Wassergehalt angeboten werden. Der Vorteil der Pulver- und Tablettenform, aber auch der Pastenform, ist das geringe Lagervolumen, die kleinere Packung, die Verminderung der Frachtkosten und die Stabilität.A fountain solution additive according to the invention in powder form can contain 0.05-5 parts of group A wetting agent in addition to 2-90 parts of buffer salt, 0-60 parts of softening agent, 0-80 parts of humectant, 0-80 parts of film former and 0.2-5 parts Preservative. Such a powder can easily be compressed into tablets. These tablets dissolve quickly and easily in water and thus allow easy and simple dosing and preparation of the fountain solution for ^ offset printing. However, this powder can also be dissolved directly in water without difficulty or offered in the form of a paste with only a low water content will. The advantage of the powder and tablet form, but also the paste form, is the small storage volume, the smaller packaging, the reduction in freight costs and the stability.

Zur Herstellung eines Feuchtwassers benötigt man je nach Gehalt an Netzmitteln der Gruppe A 0,1 - 10 g des erfindungsgemäßen Zusatzes. Ein Gehalt von 0,001 - 0,1 g Netzmittel pro Liter Feuchtwasser führt zu den erfindungsgemäß erzielbaren Vorteilen des Feuchtwassers gegenüber herkömmlichen Rezepturen, nämlich der Verbesserung des Farb-, Wasser-und Emulgationsverhaltens, der Ermöglichung einer extremen geringen Wasserführung und der daraus resultierenden drucktechnischen Vorteile. Erfindungsgemäß ist es möglich, auf den Zusatz von Alkohol zum Feuchtwasser ganz zu verzichten, was aus arbeitstechnischen und umweltstechnischen Gründen erwünscht sein kann. Weiterhin lassen sich die Feuchtwalzen schneller und gründlicher reinigen, und es wird die Wiederverschmutzung bezogener Feuchtwalzen reduziert.To produce a fountain solution, depending on the content of group A wetting agents, 0.1-10 g of the additive according to the invention are required. A content of 0.001-0.1 g of wetting agent per liter of fountain solution leads to the advantages of the fountain solution compared to conventional formulations which can be achieved according to the invention, namely the improvement of the color, water and emulsification behavior, the enabling of extremely low water flow and the resulting printing advantages. According to the invention, it is possible to completely dispense with the addition of alcohol to the fountain solution, which may be desirable for reasons of work and environmental technology. Furthermore, the dampening rollers can be cleaned faster and more thoroughly, and the re-contamination of the dampening rollers covered is reduced.

Die Druckplatten laufen extrem schnell frei und vermindern dadurch den Anfall an Makulatur. Insbesondere werden auch Farbablagerungen auf dem Gummituch im bildfreien Bereich wesentlich vermindert.The printing plates run free extremely quickly, thereby reducing the amount of waste. In particular, color deposits on the blanket in the non-image area are also significantly reduced.

Die erfindungsgemäßen Feuchtwasser-Zusätze sind in den folgenden Beispielen näher erläutert.The fountain solution additives according to the invention are explained in more detail in the following examples.

Beispiel 1example 1

Rezepturen für flüssige Konzentrate:

  • 0,01 bis 2 Teile Netzmittel der Gruppe A werden mit 2 bis 20 Teilen Puffersalz (Trinatriumcitrat/Citronensäure im Gewichtsverhältnis 5:1 bis 2:1), 0,1 bis 5 Teilen Konservierungsmittel (Kaliumsorbat oder Promitent, Dr. Bode GmbH) und 10 bis 90 Teilen Wasser gelöst. Es werden 0 bis 50 Teile, vorzugsweise 3 bis 10 Teile Feuchthaltemittel, beispielsweise Sorbit, 0 bis 20 Teile, vorzugsweise 2 bis 10 Teile Enthärtungsmittel, wie Ethylendiamintetraessigsäure-Natriumsalz, 0 bis 50 Teile, vorzugsweise 2 bis 5 Teile-Filmbildner, wie Gummiarabicum, und falls erforderlich bis zu 30 Teilen Alkohol (Ethanol oder Isopropanol) als Hilfslösungsmittel zugegeben und innig vermischt. Diese Konzentrate können unmittelbar abgefüllt und verwendet werden. Dem Feuchtwasser werden 1 bis 100 g, vorzugsweise ca. 10 g pro Liter des Konzentrates zugesetzt.
Recipes for liquid concentrates:
  • 0.01 to 2 parts of group A wetting agent are added 2 to 20 parts of buffer salt (trisodium citrate / citric acid in a weight ratio of 5: 1 to 2: 1), 0.1 to 5 parts of preservative (potassium sorbate or Promitent, Dr. Bode GmbH) and 10 to 90 parts of water are dissolved. 0 to 50 parts, preferably 3 to 10 parts, of humectant, for example sorbitol, 0 to 20 parts, preferably 2 to 10 parts of softening agent, such as ethylenediaminetetraacetic acid sodium salt, 0 to 50 parts, preferably 2 to 5 parts, film former, such as gum arabic, and if necessary up to 30 parts of alcohol (ethanol or isopropanol) are added as auxiliary solvents and mixed intimately. These concentrates can be filled and used immediately. 1 to 100 g, preferably about 10 g, per liter of the concentrate are added to the fountain solution.

Beispiel 2Example 2

0,05 bis 5 Teile Netzmittel der Gruppe A, vorzugsweise 0,5 bis 2 Teile werden mit 2 bis 90 Teilen Puffersalz (Trinatriumcitrat/Citronensäure im Verhältnis 5:1 bis 2:1), 0,2 bis 5 Teilen, vorzugsweise 1 bis 3 Teilen Kaliumsorbat, 0 bis 80 Teilen, vorzugsweise 20 bis 40 Teilen Sorbit als Feuchthaltemittel, 0 bis 60 Teilen, vorzugsweise 2 bis 20 Teilen Ethylendiamintetraessigsäure-Natriumsalz als Enthärtungsmittel und 0 bis 80 Teilen, vorzugsweise 0 bis 5 Teilen Gummiarabicum als Filmbildner in einem Pulvermischer bis zur Homogenität gemischt. Das Pulver kann auf Wunsch instantisiert oder zu Tabletten verpreßt werden. Das Pulver wird in Mengen von 1 bis 10 g, vorzugsweise 3 bis 5 g pro Liter Feuchtwasser zugesetzt.0.05 to 5 parts of group A wetting agent, preferably 0.5 to 2 parts, with 2 to 90 parts of buffer salt (trisodium citrate / citric acid in a ratio of 5: 1 to 2: 1), 0.2 to 5 parts, preferably 1 to 3 parts of potassium sorbate, 0 to 80 parts, preferably 20 to 40 parts of sorbitol as a humectant, 0 to 60 parts, preferably 2 to 20 parts of sodium ethylenediaminetetraacetic acid as a softening agent and 0 to 80 parts, preferably 0 to 5 parts of gum arabic as a film former in a powder mixer mixed until homogeneous. If desired, the powder can be instantized or compressed into tablets. The powder is added in amounts of 1 to 10 g, preferably 3 to 5 g, per liter of fountain solution.

Claims (8)

1. Feuchtwasser-Zusatz für den Offsetdruck, enthaltend Netzmittel, pH-regulierende Substanzen, Feuchthaltemittel, ggf. Filmbildner, Enthärtungsmittel, Konservierungsmittel und ggf. Lösungsmittel, dadurch gekennzeichnet, daß er als Netzmittel eine oder mehrere Substanzen der Gruppe A bestehend aus a) Polypropylenglykol (400 - 2000) b) 3,5 Dimethyl-1-hexin-3-ol c) 3,6 Dimethyl-4-octin-3,6-diol d) 2,4,7,9-Tetramethyl-5-decin-4,7-diol e) Ethoxylierungsprodukte von b, c und/oder d f) Kombinationen von a, b, c, d und/oder e mit weiteren üblichen Netzmitteln
enthält.1. fountain solution additive for offset printing, containing wetting agents, pH-regulating substances, humectants, if appropriate film formers, softening agents, preservatives and optionally solvents, characterized in that it comprises one or more substances of group A as wetting agents a) polypropylene glycol (400 - 2000) b) 3,5 dimethyl-1-hexin-3-ol c) 3,6 dimethyl-4-octyne-3,6-diol d) 2,4,7,9-tetramethyl-5-decyne-4,7-diol e) ethoxylation products of b, c and / or d f) combinations of a, b, c, d and / or e with other customary wetting agents
contains. 2. Feuchtwasser-Zusatz gemäß Anspruch 1, dadurch gekennzeichnet, daß er in Pasten-, Pulver- oder Tablettenform vorliegt.2. fountain solution additive according to claim 1, characterized in that it is in paste, powder or tablet form. 3. Feuchtwasser-Zusatz gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, daß er als pH-regulierende Substanz Natriumcitrat und Citronensäure enthält..3. fountain solution additive according to claim 1 or 2, characterized in that it contains sodium citrate and citric acid as pH-regulating substance .. 4. Feuchtwasser-Zusatz gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß er als Feuchthaltemittel einen Polyalkohol mit 5 bis 6 Kohlenstoffato- .men enthält.4. fountain solution additive according to one of claims 1 to 3, characterized in that it contains a polyalcohol with 5 to 6 carbon atoms as humectant. 5. Feuchtwasser-Zusatz gemäß einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß er als Enthärtungsmittel Ethylendiaminintetraessigsäure-Natriumsalz enthält.5. fountain solution additive according to one of claims 1 to 4, characterized in that it as a softening contains ethylenediaminetetraacetic acid sodium salt. 6. Feuchtwasser-Zusatz gemäß einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß er als Konservierungsmittel Kaliumsorbat enthält.6. fountain solution additive according to one of claims 1 to 5, characterized in that it contains potassium sorbate as a preservative. 7. Verwendung von einer oder mehrerer Substanzen der Gruppe A bestehend aus a) Polypropylenglykol (400 - 2000) b) 3,5 Dimethyl-1-hexin-3-ol c) 3,6 Dimethyl-4-octin-3,6-diol d) 2,4,7,9-Tetramethyl-5-decin-4,7-diol e) Ethoxylierungsprodukte von b, c und/oder d f) Kombinationen von a, b, c, d und/oder e mit weiteren üblichen Netzmitteln
als Feuchtwasser-Zusatz beim Offsetdruck.7. Use of one or more substances of group A consisting of a) polypropylene glycol (400 - 2000) b) 3,5 dimethyl-1-hexin-3-ol c) 3,6 dimethyl-4-octyne-3,6-diol d) 2,4,7,9-tetramethyl-5-decyne-4,7-diol e) ethoxylation products of b, c and / or d f) combinations of a, b, c, d and / or e with other customary wetting agents
as a fountain solution additive for offset printing. 8. Verwendung gemäß Anspruch 7 in Pasten-, Pulver- oder Tablettenform.8. Use according to claim 7 in paste, powder or tablet form.
EP83110755A 1982-12-14 1983-10-27 Fountain solution additive for lithographic printing Expired EP0111136B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83110755T ATE44499T1 (en) 1982-12-14 1983-10-27 DAMPING WATER ADDITIVE FOR OFFSET PRINTING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3246153 1982-12-14
DE3246153 1982-12-14

Publications (3)

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EP0111136A2 true EP0111136A2 (en) 1984-06-20
EP0111136A3 EP0111136A3 (en) 1986-08-27
EP0111136B1 EP0111136B1 (en) 1989-07-12

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EP83110755A Expired EP0111136B1 (en) 1982-12-14 1983-10-27 Fountain solution additive for lithographic printing

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EP (1) EP0111136B1 (en)
AT (1) ATE44499T1 (en)
DE (1) DE3380173D1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0269760A1 (en) * 1986-12-02 1988-06-08 Bernd Schwegmann GmbH & Co. KG Fountain solution for lithographic printing
EP0411883A1 (en) * 1989-08-02 1991-02-06 Fuji Photo Film Co., Ltd. Dampening water composition for lithographic plate
US5288678A (en) * 1990-10-19 1994-02-22 Beckman Instruments, Inc. Indirect potentiometric method and diluent for analysis of lithium
US5340495A (en) * 1993-04-30 1994-08-23 Siebert, Inc. Compositions for cleaning ink from a printing press and methods thereof
US6660454B2 (en) 2001-05-18 2003-12-09 Kodak Polychrome Graphics Llc Additive composition for both rinse water recycling in water recycling systems and simultaneous surface treatment of lithographic printing plates
DE102008061735A1 (en) * 2008-12-11 2010-06-17 Weros Technology Gmbh Printing method, in particular offset printing method, and release agent for this

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1807647A1 (en) 1967-11-16 1969-06-12 Eastman Kodak Co Process for improving the printing properties of planographic printing forms

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4246843A (en) * 1976-07-23 1981-01-27 The Dow Chemical Company Method for treating imaged lithographic printing plates

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1807647A1 (en) 1967-11-16 1969-06-12 Eastman Kodak Co Process for improving the printing properties of planographic printing forms

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0269760A1 (en) * 1986-12-02 1988-06-08 Bernd Schwegmann GmbH & Co. KG Fountain solution for lithographic printing
EP0411883A1 (en) * 1989-08-02 1991-02-06 Fuji Photo Film Co., Ltd. Dampening water composition for lithographic plate
US5288678A (en) * 1990-10-19 1994-02-22 Beckman Instruments, Inc. Indirect potentiometric method and diluent for analysis of lithium
US5340495A (en) * 1993-04-30 1994-08-23 Siebert, Inc. Compositions for cleaning ink from a printing press and methods thereof
US6660454B2 (en) 2001-05-18 2003-12-09 Kodak Polychrome Graphics Llc Additive composition for both rinse water recycling in water recycling systems and simultaneous surface treatment of lithographic printing plates
DE102008061735A1 (en) * 2008-12-11 2010-06-17 Weros Technology Gmbh Printing method, in particular offset printing method, and release agent for this

Also Published As

Publication number Publication date
DE3380173D1 (en) 1989-08-17
ATE44499T1 (en) 1989-07-15
EP0111136A3 (en) 1986-08-27
EP0111136B1 (en) 1989-07-12

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