EP0111136B1 - Fountain solution additive for lithographic printing - Google Patents
Fountain solution additive for lithographic printing Download PDFInfo
- Publication number
- EP0111136B1 EP0111136B1 EP83110755A EP83110755A EP0111136B1 EP 0111136 B1 EP0111136 B1 EP 0111136B1 EP 83110755 A EP83110755 A EP 83110755A EP 83110755 A EP83110755 A EP 83110755A EP 0111136 B1 EP0111136 B1 EP 0111136B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fountain solution
- solution additive
- substances
- diol
- dimethyl
- 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
Links
- 239000000654 additive Substances 0.000 title claims abstract description 21
- 230000000996 additive effect Effects 0.000 title claims abstract description 18
- 238000007639 printing Methods 0.000 title description 10
- 239000000080 wetting agent Substances 0.000 claims abstract description 27
- 239000000126 substance Substances 0.000 claims abstract description 18
- 238000007645 offset printing Methods 0.000 claims abstract description 10
- 239000003755 preservative agent Substances 0.000 claims abstract description 9
- 239000002904 solvent Substances 0.000 claims abstract description 8
- NUYADIDKTLPDGG-UHFFFAOYSA-N 3,6-dimethyloct-4-yne-3,6-diol Chemical compound CCC(C)(O)C#CC(C)(O)CC NUYADIDKTLPDGG-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000007046 ethoxylation reaction Methods 0.000 claims abstract description 6
- LXOFYPKXCSULTL-UHFFFAOYSA-N 2,4,7,9-tetramethyldec-5-yne-4,7-diol Chemical compound CC(C)CC(C)(O)C#CC(C)(O)CC(C)C LXOFYPKXCSULTL-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000004909 Moisturizer Substances 0.000 claims abstract 3
- 230000001333 moisturizer Effects 0.000 claims abstract 3
- 239000003795 chemical substances by application Substances 0.000 claims abstract 2
- 239000000843 powder Substances 0.000 claims description 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- CHHHXKFHOYLYRE-UHFFFAOYSA-M 2,4-Hexadienoic acid, potassium salt (1:1), (2E,4E)- Chemical compound [K+].CC=CC=CC([O-])=O CHHHXKFHOYLYRE-UHFFFAOYSA-M 0.000 claims description 4
- 229940069338 potassium sorbate Drugs 0.000 claims description 4
- 235000010241 potassium sorbate Nutrition 0.000 claims description 4
- 239000004302 potassium sorbate Substances 0.000 claims description 4
- 230000002335 preservative effect Effects 0.000 claims description 4
- 239000001509 sodium citrate Substances 0.000 claims description 4
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 claims description 4
- 229940038773 trisodium citrate Drugs 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- HLWRUJAIJJEZDL-UHFFFAOYSA-M sodium;2-[2-[bis(carboxymethyl)amino]ethyl-(carboxymethyl)amino]acetate Chemical compound [Na+].OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC([O-])=O HLWRUJAIJJEZDL-UHFFFAOYSA-M 0.000 claims description 2
- 150000005846 sugar alcohols Polymers 0.000 claims description 2
- 235000019263 trisodium citrate Nutrition 0.000 claims 1
- NECRQCBKTGZNMH-UHFFFAOYSA-N 3,5-dimethylhex-1-yn-3-ol Chemical compound CC(C)CC(C)(O)C#C NECRQCBKTGZNMH-UHFFFAOYSA-N 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 11
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 8
- 239000004902 Softening Agent Substances 0.000 description 7
- 235000008504 concentrate Nutrition 0.000 description 7
- 239000012141 concentrate Substances 0.000 description 7
- 239000003906 humectant Substances 0.000 description 7
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 3
- 229920000084 Gum arabic Polymers 0.000 description 3
- 241000978776 Senegalia senegal Species 0.000 description 3
- 239000000205 acacia gum Substances 0.000 description 3
- 235000010489 acacia gum Nutrition 0.000 description 3
- 239000000337 buffer salt Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000600 sorbitol Substances 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- 235000014666 liquid concentrate Nutrition 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000151 polyglycol Polymers 0.000 description 2
- 239000010695 polyglycol Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 description 1
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, containing wetting agents, pH-regulating substances, humectants, if appropriate film formers, softening agents, preservatives and, if appropriate, solvents.
- DE-OS-1 807 647 relates to a process for improving the printing properties of planographic printing plates with printing areas consisting of gelatin, characterized in that the surface of the printing plate is coated with an aqueous, at least one polyglycol with, before and / or during inking treated average molecular weight of 400 to 20,000, preferably 400 to 6,000 and optionally a solution containing an anionic surfactant.
- a polypropylene glycol is recommended as the polyglycol.
- 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 produced 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.
- Sorbitol 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.
- the present invention thus relates to a fountain solution additive for offset printing according to claim 1.
- a particular advantage of this additive is that it can be made in paste, powder or tablet form.
- a liquid fountain solution concentrate can contain 0.1 to 50 parts by weight of wetting agent according to claim 1.
- the concentration depends solely on the solvent. Not all wetting agents according to claim 1 are clearly soluble in pure water at higher concentrations, while solvents such as ethanol or isopropanol are able to clearly dissolve the wetting agents according to claim 1 in a weight ratio of 1: 1.
- a solvent mixture of ethanol or isopropanol to water in a weight ratio of 30:70 is capable of clearly dissolving sufficient amounts of wetting agent.
- the wetting agents according to claim 1 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 by weight of wetting agent according to claim 1, wherein 10-90 parts by weight of water and, if desired, 0 to 30 parts by weight of alcohol can be used as the solvent.
- a fountain solution additive according to the invention in powder form can contain 0.05-5 parts by weight of wetting agent according to claim 1 in addition to 2-90 parts by weight of buffer salt, 0-60 parts by weight of softening agent, 0-80 parts by weight of humectant, 0-80 parts by weight of film former and 0.2-5 parts by weight Preservative.
- a powder can easily be compressed into tablets. These tablets dissolve quickly and easily in water, allowing easy and simple dosing and preparation of the fountain solution for offset printing.
- this powder can also be dissolved directly in water without difficulty or can be offered in the form of a paste with only a low water content.
- the advantages of the powder and tablet form, but also the paste form are the low storage volume, the smaller packaging, the reduction in freight costs and the stability.
- 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 fountain solution compared to conventional formulations that 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.
- wetting agent according to claim 1 0.01 to 2 g of wetting agent according to claim 1 are mixed with 2 to 20 g of buffer salt (trisodium citrate / gitric acid in a weight ratio of 5: 1 to 2: 1), 0.1 to 5 g of preservative (potassium sorbate or Promitent, Dr. Bode GmbH) and 10 to 90 g of water dissolved.
- buffer salt trisodium citrate / gitric acid in a weight ratio of 5: 1 to 2: 1
- preservative potassium sorbate or Promitent, Dr. Bode GmbH
- humectant for example sorbitol
- softening agent such as ethylenediaminetetraacetic acid sodium salt
- film former such as gum arabic
- Alcohol ethanol or isopropanol
- 0.05 to 5 g of wetting agent according to claim 1 preferably 0.5 to 2 g with 2 to 90 g of buffer salt (trisodium citrate / citric acid in a ratio of 5: 1 to 2: 1), 0.2 to 5 g, preferably 1 to 3 g of potassium sorbate, 0 to 80 g, preferably 20 to 40 g of sorbitol as a humectant, 0 to 60 g, preferably 2 to 20 g of sodium ethylenediaminetetraacetic acid as a softening agent and 0 to 80 g, preferably 0 to 5 g 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.
Landscapes
- Printing Plates And Materials Therefor (AREA)
Abstract
Description
Gegenstand der vorliegenden Erfindung ist ein Feuchtwasser-Zusatz für den Offsetdruck, enthaltend Netzmittel, pH-regulierende Substanzen, Feuchthaltemittel, ggf. Filmbildner, Enthärtungsmittel, Konservierungsmittel und ggf. Lösungsmittel.The present invention relates to a fountain solution additive for offset printing, containing wetting agents, pH-regulating substances, humectants, if appropriate film formers, softening agents, preservatives and, if appropriate, solvents.
Beim Offsetdruck werden dem Feuchtwasser verschiedene Zusätze zugegeben, um das Drucken zu erleichtern und die Qualität der Druckerzeugnisse zu erhöhen.In offset printing, various additives are added to the fountain solution to make printing easier and to increase the quality of the printed products.
Die DE-OS-1 807 647 betrifft ein Verfahren zur Verbesserung der Druckeigenschaften von Flachdruckformen mit aus Gelatine bestehenden Druckbezirken, dadurch gekennzeichnet, daß man die Oberfläche der Druckform vor und/oder während des Einfärbens mit Druckfarbe mit einer wäßrigen, mindestens ein Polyglykol mit einem durchschnittlichen Molekulargewicht von 400 bis 20000, vorzugsweise 400 bis 6000 sowie gegebenenfalls ein anionisches Netzmittel enthaltenden Lösung behandelt. Als Polyglykol wird ein Polypropylenglykol empfohlen.DE-OS-1 807 647 relates to a process for improving the printing properties of planographic printing plates with printing areas consisting of gelatin, characterized in that the surface of the printing plate is coated with an aqueous, at least one polyglycol with, before and / or during inking treated average molecular weight of 400 to 20,000, preferably 400 to 6,000 and optionally a solution containing an anionic surfactant. A polypropylene glycol is recommended as the polyglycol.
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.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, sometimes also softening agents 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 produced in paste, powder or tablet form.
Diese Aufgabe wurde überraschenderweise gelöst durch einen Feuchtwasser-Zusatz für den Offsetdruck, enthaltend Netzmittel, pH-regulierende Substanzen, Feuchthaltemittel, ggf. Filmbildner, ggf. Enthärtungsmittel, ggf. Konservierungsmittel und ggf. Lösungsmittel, dadurch gekennzeichnet, daß er als Netzmittel eine oder mehrere der Substanzen
- a) 3,5 Dimethyl-1-hexin-3-01
- b) 3,6 Dimethyl-4-octin-3,6-diol
- c) 2,4,7,9-Tetramethyl-5-decin-4,7-diol
- d) Ethoxylierungsprodukte von a), b) und/oder c) oder Kombinationen der Substanzen a), b), c) und/oder d) mit weiteren üblichen Netzmitteln enthält.
- a) 3.5 dimethyl-1-hexyne-3-01
- 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 substances a), b), c) and / or d) with other customary wetting agents.
Die Netzmittel gemäß Anspruch 1 haben die folgenden Formeln:
- c) in den Ethoxylierungsprodukten von b, c und d sind die Hydroxyl-Gruppen teilweise oder vollständig ersetzt durch die Gruppe
- c) in the ethoxylation products of b, c and d, the hydroxyl groups are partially or completely replaced by the group
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 Sorbit.According to the invention, polyalcohols having 5 or 6 carbon atoms are used as humectants. Sorbitol 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 gemäß Anspruch 1.The present invention thus relates to a fountain solution additive for offset printing according to claim 1.
Ein besonderer Vorteil dieses Zusatzes ist, daß er in Pasten-, Pulver- oder Tablettenform hergestellt werden kann.A particular advantage of this additive is that it can be made in paste, powder or tablet form.
Ein weiterer Gegenstand der vorliegenden Erfindung ist die Verwendung von einer oder mehrerer der folgenden Substanzen
- a) 3,5 Dimethyl-1-hexin-3-01
- b) 3,6 Dimethyl-4-octin-3,6-diol
- c) 2,4,7,9-Tetramethyl-5-decin-4,7-diol
- d) Ethoxylierungsprodukte von a), b) und/oder c) oder Kombinationen der Substanzen a), b), c) und/oder d) mit weiteren üblichen Netzmitteln
als Feuchtwasser-Zusatz beim Offsetdruck und insbesondere deren Verwendung in Feuchtwasser-Konzentraten in Pasten-, Pulver- oder Tablettenform.Another object of the present invention is the use of one or more of the following substances
- a) 3.5 dimethyl-1-hexyne-3 0 1
- 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 substances a), b), c) and / or d) with other customary wetting agents
as a fountain solution additive in offset printing and in particular 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 Gewichtsteile Netzmittel gemäß Anspruch 1 enthalten. Die Konzentration hängt allein von dem Lösungsmittel ab. Im reinen Wasser sind nicht alle Netzmittel gemäß Anspruch 1 in höheren Konzentrationen klar löslich, während Lösungsmittel wie Ethanol oder Isopropanol in der Lage sind, die Netzmittel gemäß Anspruch 1 im Gewichtsverhältnis 1 : 1 klar zu lösen. Ein Lösungsmittelgemisch Ethanol oder Isopropanol zu Wasser im Gewichtsverhältnis 30 : 70 ist in der Lage ausreichende Mengen Netzmittel gemäß Anspruch 1 klar zu lösen. Die Netzmittel gemäß Anspruch 1 in reiner Form sind in gebrauchsfertigem Feuchtwasser auch ohne Zusatz von Alkoholen in ausreichender Konzentration wasserlöslich.The amounts of the individual components of the fountain solution additive according to the invention are not critical. A liquid fountain solution concentrate can contain 0.1 to 50 parts by weight of wetting agent according to claim 1. The concentration depends solely on the solvent. Not all wetting agents according to claim 1 are clearly soluble in pure water at higher concentrations, while solvents such as ethanol or isopropanol are able to clearly dissolve the wetting agents according to claim 1 in a weight ratio of 1: 1. A solvent mixture of ethanol or isopropanol to water in a weight ratio of 30:70 is capable of clearly dissolving sufficient amounts of wetting agent. The wetting agents according to claim 1 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 Gewichtsteile Netzmittel gemäß Anspruch 1 enthalten, wobei als Lösungsmittel 10 - 90 Gewichtsteile Wasser und gewünschtenfalls 0 bis 30 Gewichtsteile Alkohol zur Anwendung kommen können.According to the invention, a liquid concentrate can contain between 0.01 and 2 parts by weight of wetting agent according to claim 1, wherein 10-90 parts by weight of water and, if desired, 0 to 30 parts by weight of alcohol can be used as the solvent.
Ein erfindungsgemäßer Feuchtwasser-Zusatz in Pulverform kann 0,05 - 5 Gewichtsteile Netzmittel gemäß Anspruch 1 enthalten neben 2 - 90 Gewichtsteilen Puffersalz, 0 - 60 Gewichtsteilen Enthärtungsmittel, 0 - 80 Gewichtsteilen Feuchthaltemittel, 0 - 80 Gewichtsteilen Filmbildner und 0,2 - 5 Gewichtsteilen 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 by weight of wetting agent according to claim 1 in addition to 2-90 parts by weight of buffer salt, 0-60 parts by weight of softening agent, 0-80 parts by weight of humectant, 0-80 parts by weight of film former and 0.2-5 parts by weight Preservative. Such a powder can easily be compressed into tablets. These tablets dissolve quickly and easily in water, allowing 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 can be offered in the form of a paste with only a low water content. The advantages of the powder and tablet form, but also the paste form, are the low storage volume, the smaller packaging, the reduction in freight costs and the stability.
Zur Herstellung eines Feuchtwassers benötigt man je nach Gehalt an Netzmitteln gemäß Anspruch 1 0,1 - 10 g des erfindungsgemäßen Zusatz es. 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 wetting agents according to claim 1, 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 fountain solution compared to conventional formulations that 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.
Rezepturen für flüssige Konzentrate:Recipes for liquid concentrates:
0,01 bis 2 g Netzmittel gemäß Anspruch 1 werden mit 2 bis 20 g Puffersalz (Trinatriumcitrat/Gitronensäure im Gewichtsverhältnis 5 : 1 bis 2 : 1), 0,1 bis 5 g Konservierungsmittel (Kaliumsorbat oder Promitent, Dr. Bode GmbH) und 10 bis 90 g Wasser gelöst. Es werden 0 bis 50 g, vorzugsweise 3 bis 10 g Feuchthaltemittel, beispielsweise Sorbit, 0 bis 20 g, vorzugsweise 2 bis 10 g Enthärtungsmittel, wie Ethylendiamintetraessigsäure-Natriumsalz, 0 bis 50 g, vorzugsweise 2 bis 5 g Filmbildner, wie Gummiarabicum, und falls erforderlich bis zu 30 g 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.0.01 to 2 g of wetting agent according to claim 1 are mixed with 2 to 20 g of buffer salt (trisodium citrate / gitric acid in a weight ratio of 5: 1 to 2: 1), 0.1 to 5 g of preservative (potassium sorbate or Promitent, Dr. Bode GmbH) and 10 to 90 g of water dissolved. There are 0 to 50 g, preferably 3 to 10 g of humectant, for example sorbitol, 0 to 20 g, preferably 2 to 10 g of softening agent, such as ethylenediaminetetraacetic acid sodium salt, 0 to 50 g, preferably 2 to 5 g of film former, such as gum arabic, and if necessary up to 30 g Alcohol (ethanol or isopropanol) is added as auxiliary solvent 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.
0,05 bis 5 g Netzmittel gemäß Anspruch 1, vorzugsweise 0,5 bis 2 g werden mit 2 bis 90 g Puffersalz (Trinatriumcitrat/Citronensäure im Verhältnis 5 : 1 bis 2 : 1), 0,2 bis 5 g, vorzugsweise 1 bis 3 g Kaliumsorbat, 0 bis 80 g, vorzugsweise 20 bis 40 g Sorbit als Feuchthaltemittel, 0 bis 60 g, vorzugsweise 2 bis 20 g Ethylendiamintetraessigsäure-Natriumsalz als Enthärtungsmittel und 0 bis 80 g, vorzugsweise 0 bis 5 g 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 g of wetting agent according to claim 1, preferably 0.5 to 2 g with 2 to 90 g of buffer salt (trisodium citrate / citric acid in a ratio of 5: 1 to 2: 1), 0.2 to 5 g, preferably 1 to 3 g of potassium sorbate, 0 to 80 g, preferably 20 to 40 g of sorbitol as a humectant, 0 to 60 g, preferably 2 to 20 g of sodium ethylenediaminetetraacetic acid as a softening agent and 0 to 80 g, preferably 0 to 5 g 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)
as a fountain solution additive in offset printing.
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)
| Publication Number | Publication Date |
|---|---|
| EP0111136A2 EP0111136A2 (en) | 1984-06-20 |
| EP0111136A3 EP0111136A3 (en) | 1986-08-27 |
| EP0111136B1 true EP0111136B1 (en) | 1989-07-12 |
Family
ID=6180572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP83110755A Expired EP0111136B1 (en) | 1982-12-14 | 1983-10-27 | Fountain solution additive for lithographic printing |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0111136B1 (en) |
| AT (1) | ATE44499T1 (en) |
| DE (1) | DE3380173D1 (en) |
Families Citing this family (6)
| 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 |
| JP2673586B2 (en) * | 1989-08-02 | 1997-11-05 | 富士写真フイルム株式会社 | Damping water composition for lithographic printing plate, concentrated liquid used therefor and lithographic printing method using the same |
| 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 |
| US20020187427A1 (en) | 2001-05-18 | 2002-12-12 | Ulrich Fiebag | 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3547632A (en) | 1967-11-16 | 1970-12-15 | Eastman Kodak Co | Method of lithographic reproduction and solution to render image areas oleophilic |
| US4246843A (en) * | 1976-07-23 | 1981-01-27 | The Dow Chemical Company | Method for treating imaged lithographic printing plates |
-
1983
- 1983-10-27 AT AT83110755T patent/ATE44499T1/en active
- 1983-10-27 DE DE8383110755T patent/DE3380173D1/en not_active Expired
- 1983-10-27 EP EP83110755A patent/EP0111136B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| EP0111136A2 (en) | 1984-06-20 |
| DE3380173D1 (en) | 1989-08-17 |
| ATE44499T1 (en) | 1989-07-15 |
| EP0111136A3 (en) | 1986-08-27 |
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