CN108819452B - Printing fountain solution - Google Patents
Printing fountain solution Download PDFInfo
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- CN108819452B CN108819452B CN201810463839.7A CN201810463839A CN108819452B CN 108819452 B CN108819452 B CN 108819452B CN 201810463839 A CN201810463839 A CN 201810463839A CN 108819452 B CN108819452 B CN 108819452B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F7/00—Rotary lithographic machines
- B41F7/20—Details
- B41F7/24—Damping devices
- B41F7/32—Ducts, containers, or like supply devices for liquids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2200/00—Printing processes
- B41P2200/20—Lithography
- B41P2200/22—Wet offset printing
Abstract
The invention discloses a printing fountain solution, which belongs to the field of chemical engineering and comprises 30 ~ 40 parts of surfactant, 25 ~ 30 parts of wetting agent, 3 ~ 8 parts of tamarind gum, 8 ~ 12 parts of polyethylene glycol 400, 0.1 ~ 0.4.4 parts of tween-60, 6 ~ 9 parts of oxalic acid, 30 ~ 40 parts of sodium oxalate and 1000 parts of water, and the printing fountain solution is obtained.
Description
Technical Field
The invention belongs to the field of chemical industry, and particularly relates to a printing fountain solution.
Background
Offset printing is characterized by that it utilizes two natural laws of that oil-water is not miscible and solid can be selectively adsorbed on the liquid, and the copied picture and text and blank portion can be commonly built on the surface of the uniformly-processed printing plate, so that the blank portion possesses strong water-absorbing property, and the picture and text portion is oleophilic and water-repellent. In the printing process, water is firstly supplied to the whole printing plate, so that the blank part of the plate surface absorbs the water to form a layer of water film, and then ink is supplied to the printing plate. At the moment, because a layer of water film exists in the blank part of the printing plate, the printing ink cannot be adsorbed in the blank part, and the image-text part is hydrophobic and oleophilic and adsorbs a layer of printing ink. Therefore, the role of fountain solutions in offset printing cannot be neglected.
Fountain solutions can be divided into the following according to different formulas: common fountain solution, alcohol fountain solution and nonionic surfactant fountain solution. The common fountain solution consists of clear water, inorganic acid (weak acid), inorganic acid salt electrolyte, hydrophilic colloid and other substances. With the continuous improvement of printing technology, common fountain solution is not suitable for printing requirements and tends to be eliminated. The non-ionic surfactant fountain solution is a novel fountain solution developed in recent years, and is a low surface tension fountain solution with alcohol replaced by the non-ionic surfactant. Because of its low surface tension and good wetting property, the consumption of the fountain solution can be reduced. An alcohol fountain solution is a fountain solution that is commonly used. At present, alcohol fountain solution is generally adopted on offset printing machines, and isopropanol is one of additives of the fountain solution. Compared with the traditional water dampening system, the film forming condition of the dampening solution on the printing plate is improved, the using amount of the dampening solution is greatly reduced, and therefore, the paper deformation and the excessive emulsification of the ink caused by excessive water are avoided, and the transmission of the ink and the reproduction of the color are facilitated. Although the fountain solutions have certain effects, since isopropyl alcohol is volatile, the concentration of alcohol in the fountain solution is unstable, the surface tension and hydrophilicity of the fountain solution are affected, and the printing effect of the ink is finally affected. Thus, there is a great market need to produce a more effective fountain solution.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the printing fountain solution is provided aiming at the problems that the concentration of alcohol in the fountain solution is unstable, the surface tension and the hydrophilicity of the fountain solution are influenced, and the printing effect of printing ink is influenced finally because the alcohol is easy to volatilize at present.
In order to solve the technical problems, the invention adopts the following technical scheme:
a printing fountain solution comprises, by weight, 3 ~ 8 parts of tamarind gum, 8 ~ 12 parts of polyethylene glycol 400, 0.1 ~ 0.4.4 parts of tween-60, 6 ~ 9 parts of oxalic acid, 30 ~ 40 parts of sodium oxalate and 1000 parts of water, and is characterized in that 30 ~ 40 parts of surfactant and 25 ~ 30 parts of wetting agent;
the preparation method of the surfactant comprises the following steps:
(1) adding trimethylolpropane triacrylate into imidazole according to the mass ratio of 3: 1, mixing, adding triethylamine accounting for 0.3 ~ 0.6.6% of the mass of the imidazole into the mixture to obtain a mixture, adding absolute ethyl alcohol into the mixture according to the mass ratio of 1: 9, introducing nitrogen into the mixture for protection, stirring and mixing at the temperature of 75 ~ 80 ℃, cooling the mixture to room temperature to obtain a cooling matter, adding distilled water into the cooling matter according to the mass ratio of 1: 5, stirring and mixing, standing, washing a precipitate with distilled water, and distilling under reduced pressure to obtain a reduced pressure distillate;
(2) adding 1, 4-dibromobutane and absolute ethyl alcohol into the vacuum distillate according to the mass ratio of 1 ~ 3: 1: 8 ~ 12, introducing nitrogen for protection, stirring and mixing at 75 ~ 80 ℃, carrying out vacuum distillation, concentrating to obtain a concentrate, adding ethyl acetate into the concentrate according to the mass ratio of 1: 15, standing, and carrying out vacuum drying on the precipitate a to obtain a dried substance;
(3) taking 15 ~ 20 parts of dry matter, 3 ~ 6 parts of imidazole, 2 ~ 5 parts of isooctyl acrylate and 60 ~ 80 parts of absolute ethyl alcohol by weight, introducing nitrogen for protection, stirring and mixing at 70 ~ 75 ℃, distilling under reduced pressure to obtain reduced pressure distillate a, taking the reduced pressure distillate a, adding acetone into the reduced pressure distillate a according to the mass ratio of 1: 6 ~ 9, carrying out suction filtration, taking suction filtration residues, adding sodium dodecyl sulfate and the absolute ethyl alcohol according to the mass ratio of 5: 3: 10, mixing, standing, filtering, taking filtrate, and carrying out rotary evaporation to obtain the surfactant;
the preparation method of the wetting agent comprises the following steps:
A. adding divinyl tetramethyl disiloxane into chloroplatinic acid according to the mass ratio of 1: 10, heating to 110 ~ 120 ℃, stirring and mixing, cooling to room temperature, filtering, adding a sodium bicarbonate solution with the mass fraction of 5% into the filtrate according to the mass ratio of 1: 5, and stirring and mixing to obtain a stirring mixture;
B. according to the mass portion, 50 ~ 60 parts of 1,1,1,3,5,5, 5-heptamethyltrisiloxane, 15 ~ 20 parts of divinyl-1, 4-butanediol ether and 0.003 ~ 0.007.007 part of stirring mixture are taken, nitrogen is introduced for protection, stirring and mixing are carried out at 70 ~ 75 ℃, reduced pressure distillation is carried out to obtain reduced pressure distillate b, 1, 2-propylene glycol is added into the reduced pressure distillate b according to the mass ratio of 5: 2, stirring and mixing are carried out to obtain the wetting agent.
Compared with other methods, the method has the beneficial technical effects that:
(1) the invention takes triomidazole and trimethylolpropane triacrylate as raw materials, carries out addition condensation with 1, 4-dibromobutane to form completely water-soluble hyperbranched polymeric imidazole salt, the terminal group is bromobutyl, acrylate is added to carry out graft modification on the macromolecular terminal group, hydrophobic modification is carried out, sodium dodecyl sulfate is added to replace water-soluble bromide ions with dodecyl sulfate radical anions, water-soluble hyperbranched polymers with high dynamic surface activity and hyperbranched polymers with hydrocarbon capable of dissolving and dispersing are obtained, hydrophobic groups are relatively gathered at the center of micelle, hydrophilic groups are gathered at the outer layer and dissolved in water solution, so that the surface tension of fountain solution is reduced, the fountain solution can be uniformly spread on a printing plate, the fountain solution has regular spherical particles, and certain winding can occur among the hydrophobic groups distributed on the shell layer along with the increase of concentration, the bromine negative ions are favorably diffused to the solution interface to occupy the space of the hydrophobic group, so that the thixotropy of the water-based ink is reduced in the high-speed transfer process, and the stable ink layer is favorably formed to realize stable transfer and transfer;
(2) the invention uses chloroplatinic acid and divinyl tetramethyl disiloxane for complexation to form a complex, then adds 1,1,1,3,5,5, 5-heptamethyl trisiloxane chain segment as hydrophobic group and divinyl-1, 4-butanediol ether as hydrophilic group to synthesize a surface wetting agent, generally the Si-O bond is longer, so that it is easy to be hydrolyzed with protonic acid, proton alkali, water or alcohol to break, uses 1,1,1,3,5,5, 5-heptamethyl trisiloxane chain segment as hydrophobic group and vinyl-terminated polyether chain segment as hydrophilic group to synthesize Si-C type wetting agent, the hydrophilic polyether chain segment gives hydrophilic characteristic, the hydrophobic siloxane chain segment gives low surface tension, the final product not only can obviously reduce the surface tension of the interface between ink and water, when the wetting agent wets solid, the oleophilic group of the surfactant can contact with the solid surface, the hydrophilic group at the other end can contact with water, the wetting phenomenon of liquid on the surface of the printing ink is generated, the liquid generates a continuous phase, a stable emulsion structure is formed on an oil-water interface, a part of volatile alcohol additives are replaced, the printing ink also has the dual characteristics of wetting and penetration, and 1, 2-propylene glycol is added, is colorless, odorless and thick liquid, has better water absorption, is not easy to volatilize and is harmless to a human body, the drying speed of the printing ink is accelerated, the printing ink is not easy to be tinged, and also has the property of alcoholic hydroxyl, the surface tension of the liquid can be reduced, and the dampening effect is enhanced.
Detailed Description
The preparation method of the surfactant comprises the following steps:
(1) adding trimethylolpropane triacrylate into imidazole according to the mass ratio of 3: 1, mixing, adding triethylamine accounting for 0.3 ~ 0.6.6% of the mass of the imidazole into the mixture to obtain a mixture, adding absolute ethyl alcohol into the mixture according to the mass ratio of 1: 9, introducing nitrogen into the mixture for protection, stirring and mixing at 75 ~ 80 ℃ for 18 ~ 24h, cooling to room temperature to obtain a cooling product, adding distilled water into the cooling product according to the mass ratio of 1: 5, stirring and mixing for 20 ~ 30min, standing for 1 ~ 2h, washing a precipitate with distilled water, and distilling under reduced pressure to obtain a reduced pressure distillate;
(2) adding 1, 4-dibromobutane and absolute ethyl alcohol into the vacuum distillate according to the mass ratio of 1 ~ 3: 1: 8 ~ 12, introducing nitrogen for protection, stirring and mixing at 75 ~ 80 ℃ for 8 ~ 10h, carrying out vacuum distillation, concentrating to obtain a concentrate, adding ethyl acetate into the concentrate according to the mass ratio of 1: 15, standing for 3 ~ 5h, and carrying out vacuum drying on the precipitate a to obtain a dried substance;
(3) taking 15 ~ 20 parts of dry matter, 3 ~ 6 parts of imidazole, 2 ~ 5 parts of isooctyl acrylate and 60 ~ 80 parts of absolute ethyl alcohol by weight, introducing nitrogen for protection, stirring and mixing at 70 ~ 75 ℃ for 10 ~ 12 hours, carrying out reduced pressure distillation to obtain a reduced pressure distillate a, taking the reduced pressure distillate a, adding acetone into the reduced pressure distillate a according to the mass ratio of 1: 6 ~ 9, carrying out suction filtration, taking suction filtration residues, adding sodium dodecyl sulfate and the absolute ethyl alcohol according to the mass ratio of 5: 3: 10, mixing, standing for 2 ~ 3 hours, filtering, taking filtrate, and carrying out rotary evaporation to obtain the surfactant.
The preparation method of the wetting agent comprises the following steps:
A. adding divinyl tetramethyl disiloxane into chloroplatinic acid according to the mass ratio of 1: 10, heating to 110 ~ 120 ℃, stirring and mixing for 2 ~ 3h, cooling to room temperature, filtering, adding a sodium bicarbonate solution with the mass fraction of 5% into the filtrate according to the mass ratio of 1: 5, stirring and mixing for 20 ~ 30min to obtain a stirring mixture;
B. according to the mass parts, 50 ~ 60 parts of 1,1,1,3,5,5, 5-heptamethyltrisiloxane, 15 ~ 20 parts of divinyl-1, 4-butanediol ether and 0.003 ~ 0.007.007 part of stirring mixture are taken, nitrogen is introduced for protection, stirring and mixing are carried out for 4 ~ 5 hours at 70 ~ 75 ℃, reduced pressure distillation is carried out to obtain reduced pressure distillate b, and the reduced pressure distillate b is taken and added with 1, 2-propylene glycol according to the mass ratio of 5: 2, stirred and mixed to obtain the wetting agent.
A printing fountain solution comprises, by mass, 30 ~ 40 parts of a surfactant, 25 ~ 30 parts of a wetting agent, 3 ~ 8 parts of tamarind gum, 8 ~ 12 parts of polyethylene glycol 400, 0.1 ~ 0.4.4 parts of tween-60, 6 ~ 9 parts of oxalic acid, 30 ~ 40 parts of sodium oxalate and 1000 parts of water, and is mixed to obtain the printing fountain solution.
Example 1
The preparation method of the surfactant comprises the following steps:
(1) taking imidazole according to a mass ratio of 3: 1, adding trimethylolpropane triacrylate, mixing, adding triethylamine with the mass of 0.3% of that of imidazole to obtain a mixture, and mixing the mixture according to a mass ratio of 1: 9, adding absolute ethyl alcohol, introducing nitrogen for protection, stirring and mixing at 75 ℃ for 18h, cooling to room temperature to obtain a cooling material, and taking the cooling material according to a mass ratio of 1: 5 adding distilled water, stirring and mixing for 20min, standing for 1h, washing the precipitate with distilled water, and distilling under reduced pressure to obtain a reduced pressure distillate;
(2) taking the reduced pressure distillate according to the mass ratio of 1: 1: adding 1, 4-dibromobutane and absolute ethyl alcohol into the mixture 8, introducing nitrogen for protection, stirring and mixing the mixture for 8 hours at the temperature of 75 ℃, carrying out reduced pressure distillation and concentration to obtain a concentrate, and taking the concentrate according to the mass ratio of 1: 15 adding ethyl acetate, standing for 3h, and vacuum-drying the precipitate a to obtain a dried substance;
(3) taking 15 parts of a dried substance, 3 parts of imidazole, 2 parts of isooctyl acrylate and 60 parts of absolute ethyl alcohol, introducing nitrogen for protection, stirring and mixing at 70 ℃ for 10 hours, carrying out reduced pressure distillation to obtain a reduced pressure distillate a, taking the reduced pressure distillate a, adding acetone according to the mass ratio of 1: 6, carrying out suction filtration, taking suction filtration residues, adding sodium dodecyl sulfate and absolute ethyl alcohol according to the mass ratio of 5: 3: 10, mixing, standing for 2 ~ 3 hours, filtering, taking filtrate, and carrying out rotary evaporation to obtain the surfactant.
The preparation method of the wetting agent comprises the following steps:
A. taking chloroplatinic acid according to the mass ratio of 1: 10, adding divinyl tetramethyl disiloxane, heating to 110 ℃, stirring and mixing for 2 hours, cooling to room temperature, filtering, and taking the filtrate according to the mass ratio of 1: 5, adding a sodium bicarbonate solution with the mass fraction of 5%, stirring and mixing for 20min to obtain a stirred mixture;
B. taking 50 parts of 1,1,1,3,5,5, 5-heptamethyltrisiloxane, 15 parts of divinyl-1, 4-butanediol ether and 0.003 part of stirring mixture, introducing nitrogen for protection, stirring and mixing for 4 hours at 70 ℃, and carrying out reduced pressure distillation to obtain a reduced pressure distillate b, wherein the reduced pressure distillate b is taken according to the mass ratio of 5: 2, adding 1, 2-propylene glycol, stirring and mixing to obtain the wetting agent.
A printing fountain solution is prepared by mixing 30 parts of surfactant, 25 parts of wetting agent, 3 parts of tamarind gum, 8 parts of polyethylene glycol 400, 0.1 part of tween-60, 6 parts of oxalic acid, 30 parts of sodium oxalate and 1000 parts of water in parts by weight.
Example 2
The preparation method of the surfactant comprises the following steps:
(1) taking imidazole according to a mass ratio of 3: 1, adding trimethylolpropane triacrylate, mixing, adding triethylamine with the mass of 0.6% of that of imidazole to obtain a mixture, and mixing the mixture according to a mass ratio of 1: 9, adding absolute ethyl alcohol, introducing nitrogen for protection, stirring and mixing at 80 ℃ for 24 hours, cooling to room temperature to obtain a cooling material, and taking the cooling material according to a mass ratio of 1: 5 adding distilled water, stirring and mixing for 30min, standing for 2h, washing the precipitate with distilled water, and distilling under reduced pressure to obtain a reduced pressure distillate;
(2) taking the reduced pressure distillate according to the mass ratio of 3: 1: 12, adding 1, 4-dibromobutane and absolute ethyl alcohol, introducing nitrogen for protection, stirring and mixing for 10 hours at 80 ℃, distilling under reduced pressure, and concentrating to obtain a concentrate, wherein the concentrate is prepared by mixing the following components in a mass ratio of 1: 15 adding ethyl acetate, standing for 5h, and vacuum-drying the precipitate a to obtain a dried substance;
(3) according to the mass parts, taking 20 parts of a dried substance, 6 parts of imidazole, 5 parts of isooctyl acrylate and 80 parts of absolute ethyl alcohol, introducing nitrogen for protection, stirring and mixing at 75 ℃ for 12 hours, carrying out reduced pressure distillation to obtain a reduced pressure distillate a, and taking the reduced pressure distillate a according to the mass ratio of 1: 9, adding acetone, performing suction filtration, and taking suction filtration residues according to the mass ratio of 5: 3: 10 adding sodium dodecyl sulfate and absolute ethyl alcohol, mixing, standing for 3h, filtering, taking the filtrate, and performing rotary evaporation to obtain the surfactant.
The preparation method of the wetting agent comprises the following steps:
A. taking chloroplatinic acid according to the mass ratio of 1: 10, adding divinyl tetramethyl disiloxane, heating to 120 ℃, stirring and mixing for 3 hours, cooling to room temperature, filtering, and taking the filtrate according to the mass ratio of 1: 5, adding a sodium bicarbonate solution with the mass fraction of 5%, stirring and mixing for 30min to obtain a stirred mixture;
B. taking 60 parts of 1,1,1,3,5,5, 5-heptamethyltrisiloxane, 20 parts of divinyl-1, 4-butanediol ether and 0.007 part of stirring mixture, introducing nitrogen for protection, stirring and mixing for 5 hours at 75 ℃, and carrying out reduced pressure distillation to obtain a reduced pressure distillate b, wherein the reduced pressure distillate b is taken according to the mass ratio of 5: 2, adding 1, 2-propylene glycol, stirring and mixing to obtain the wetting agent.
A printing fountain solution is prepared by mixing 40 parts of surfactant, 30 parts of wetting agent, 8 parts of tamarind gum, 12 parts of polyethylene glycol 400, 0.4 part of tween-60, 9 parts of oxalic acid, 40 parts of sodium oxalate and 1000 parts of water in parts by weight.
Example 3
The preparation method of the surfactant comprises the following steps:
(1) taking imidazole according to a mass ratio of 3: 1, adding trimethylolpropane triacrylate, mixing, adding triethylamine with the mass of 0.5% of that of imidazole to obtain a mixture, and mixing the mixture according to a mass ratio of 1: 9, adding absolute ethyl alcohol, introducing nitrogen for protection, stirring and mixing at 77 ℃ for 21h, cooling to room temperature to obtain a cooling material, and taking the cooling material according to a mass ratio of 1: 5 adding distilled water, stirring and mixing for 25min, standing for 1h, washing the precipitate with distilled water, and distilling under reduced pressure to obtain a reduced pressure distillate;
(2) taking the reduced pressure distillate according to the mass ratio of 2: 1: 10, adding 1, 4-dibromobutane and absolute ethyl alcohol, introducing nitrogen for protection, stirring and mixing at 77 ℃ for 9 hours, carrying out reduced pressure distillation, and concentrating to obtain a concentrate, wherein the concentrate is prepared by mixing the following components in a mass ratio of 1: 15 adding ethyl acetate, standing for 4h, and vacuum-drying the precipitate a to obtain a dried substance;
(3) according to the mass parts, taking 17 parts of a dried substance, 4 parts of imidazole, 4 parts of isooctyl acrylate and 70 parts of absolute ethyl alcohol, introducing nitrogen for protection, stirring and mixing at 73 ℃ for 11 hours, carrying out reduced pressure distillation to obtain a reduced pressure distillate a, and taking the reduced pressure distillate a according to the mass ratio of 1: 7, adding acetone, performing suction filtration, and taking suction filtration residues according to a mass ratio of 5: 3: 10 adding sodium dodecyl sulfate and absolute ethyl alcohol, mixing, standing for 2h, filtering, taking filtrate, and performing rotary evaporation to obtain the surfactant.
The preparation method of the wetting agent comprises the following steps:
A. taking chloroplatinic acid according to the mass ratio of 1: 10, adding divinyl tetramethyl disiloxane, heating to 115 ℃, stirring and mixing for 2 hours, cooling to room temperature, filtering, and taking the filtrate according to the mass ratio of 1: 5, adding a sodium bicarbonate solution with the mass fraction of 5%, stirring and mixing for 25min to obtain a stirred mixture;
B. taking 55 parts of 1,1,1,3,5,5, 5-heptamethyltrisiloxane, 17 parts of divinyl-1, 4-butanediol ether and 0.005 part of stirring mixture, introducing nitrogen for protection, stirring and mixing for 4 hours at 73 ℃, and carrying out reduced pressure distillation to obtain a reduced pressure distillate b, wherein the reduced pressure distillate b is taken according to the mass ratio of 5: 2, adding 1, 2-propylene glycol, stirring and mixing to obtain the wetting agent.
A printing fountain solution is prepared by mixing 35 parts of surfactant, 27 parts of wetting agent, 5 parts of tamarind gum, 10 parts of polyethylene glycol 400, 0.3 part of tween-60, 7 parts of oxalic acid, 35 parts of sodium oxalate and 1000 parts of water in parts by weight.
Comparative example 1: essentially the same procedure as in example 2 was followed except that the surfactant was absent.
Comparative example 2: essentially the same procedure as in example 2 was followed except that the wetting agent was absent.
Comparative example 3: printing fountain solution manufactured by a company of Guangzhou city.
The fountain solutions of the above examples and comparative examples were prepared into working solutions with a concentration of 3%, and relevant performance tests were performed according to the printing industry standards, and the test results are shown in table 1.
Table 1:
| test items | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| pH value of working solution | 5.1 | 5.1 | 5.2 | 5.7 | 5.8 | 5.8~6.1 |
| Surface tension mN/m | 48.2 | 49.6 | 48.8 | 43.1 | 40.6 | 30.4~32.5 |
| Conductivity ns/cm | 989 | 996 | 989 | 878 | 891 | 642~714 |
In sum, the printing fountain solution disclosed by the invention has better comprehensive performance and is worthy of popularization and application.
Claims (1)
1. A printing fountain solution comprises the following components, by weight, 3 ~ 8 parts of tamarind gum, 8 ~ 12 parts of polyethylene glycol 400, 0.1 ~ 0.4.4 parts of Tween-60, 6 ~ 9 parts of oxalic acid, 30 ~ 40 parts of sodium oxalate, 30 ~ 40 parts of surfactant, 25 ~ 30 parts of wetting agent and 1000 parts of water, and is characterized in that:
the preparation method of the surfactant comprises the following steps:
(1) adding trimethylolpropane triacrylate into imidazole according to the mass ratio of 3: 1, mixing, adding triethylamine accounting for 0.3 ~ 0.6.6% of the mass of the imidazole into the mixture to obtain a mixture, adding absolute ethyl alcohol into the mixture according to the mass ratio of 1: 9, introducing nitrogen into the mixture for protection, stirring and mixing at the temperature of 75 ~ 80 ℃, cooling the mixture to room temperature to obtain a cooling matter, adding distilled water into the cooling matter according to the mass ratio of 1: 5, stirring and mixing, standing, washing a precipitate with distilled water, and distilling under reduced pressure to obtain a reduced pressure distillate;
(2) adding 1, 4-dibromobutane and absolute ethyl alcohol into the vacuum distillate according to the mass ratio of 1 ~ 3: 1: 8 ~ 12, introducing nitrogen for protection, stirring and mixing at 75 ~ 80 ℃, carrying out vacuum distillation, concentrating to obtain a concentrate, adding ethyl acetate into the concentrate according to the mass ratio of 1: 15, standing, and carrying out vacuum drying on the precipitate a to obtain a dried substance;
(3) taking 15 ~ 20 parts of dry matter, 3 ~ 6 parts of imidazole, 2 ~ 5 parts of isooctyl acrylate and 60 ~ 80 parts of absolute ethyl alcohol by weight, introducing nitrogen for protection, stirring and mixing at 70 ~ 75 ℃, distilling under reduced pressure to obtain reduced pressure distillate a, taking the reduced pressure distillate a, adding acetone into the reduced pressure distillate a according to the mass ratio of 1: 6 ~ 9, carrying out suction filtration, taking suction filtration residues, adding sodium dodecyl sulfate and the absolute ethyl alcohol according to the mass ratio of 5: 3: 10, mixing, standing, filtering, taking filtrate, and carrying out rotary evaporation to obtain the surfactant;
the preparation method of the wetting agent comprises the following steps:
A. adding divinyl tetramethyl disiloxane into chloroplatinic acid according to the mass ratio of 1: 10, heating to 110 ~ 120 ℃, stirring and mixing, cooling to room temperature, filtering, adding a sodium bicarbonate solution with the mass fraction of 5% into the filtrate according to the mass ratio of 1: 5, and stirring and mixing to obtain a stirring mixture;
B. according to the mass parts, 50 ~ 60 parts of 1,1,1,3,5,5, 5-heptamethyltrisiloxane, 15 ~ 20 parts of divinyl-1, 4-butanediol ether and 0.003 ~ 0.007.007 part of stirring mixture are taken, nitrogen is introduced for protection, stirring and mixing are carried out at 70 ~ 75 ℃, reduced pressure distillation is carried out to obtain reduced pressure distillate b, 1, 2-propylene glycol is added into the reduced pressure distillate b according to the mass ratio of 5: 2, stirring and mixing are carried out to obtain the wetting agent;
according to the weight parts, 30 ~ 40 parts of surfactant, 25 ~ 30 parts of wetting agent, 3 ~ 8 parts of tamarind gum, 8 ~ 12 parts of polyethylene glycol 400, 0.1 ~ 0.4.4 parts of tween-60, 6 ~ 9 parts of oxalic acid, 30 ~ 40 parts of sodium oxalate and 1000 parts of water are mixed to obtain the printing fountain solution.
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| CN201810463839.7A CN108819452B (en) | 2018-05-15 | 2018-05-15 | Printing fountain solution |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6268793A (en) * | 1985-09-20 | 1987-03-28 | Fuji Photo Film Co Ltd | Plate surface cleaning agent for planographic plate |
| DE3536485A1 (en) * | 1985-10-12 | 1987-04-16 | Merck Patent Gmbh | DAMPENER FOR OFFSET PRINTING |
| AU680552B2 (en) * | 1993-10-01 | 1997-07-31 | Toray Industries, Inc. | Waterless lithographic plate |
| US7276109B2 (en) * | 2004-03-30 | 2007-10-02 | Stockel Richard F | Fountain solutions containing antipiling macromolecules |
| JP2013116610A (en) * | 2011-12-05 | 2013-06-13 | Eastman Kodak Co | Printing plate protective solution composition for lithographic printing plate, and method for processing lithographic printing plate using the same |
| CN104943434A (en) * | 2015-07-11 | 2015-09-30 | 倪娉娉 | Non-ionic surfactant fountain solution |
| CN107696734A (en) * | 2017-09-26 | 2018-02-16 | 中山市富日印刷材料有限公司 | One kind exempts from isopropanol printing plate-moistening liquid and preparation method thereof |
| CN107571659A (en) * | 2017-10-17 | 2018-01-12 | 中山市富日印刷材料有限公司 | One kind exempts from alcohol edition-0 moistening liquid and preparation method thereof |
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