A printing fountain solution

Abstract

The invention discloses a printing fountain solution, and belongs to the field of chemical engineering. The printing fountain solution is prepared by mixing 30-40 parts of a surface active agent, 25-30 parts of a wetting agent, 3-8 parts of tamarind gum, 8-12 parts of polyethylene glycol 400, 0.1-0.4 part of Twain-60, 6-9 parts of oxalic acid, 30-40 parts of sodium oxalate and 1000 parts of water.The printing fountain solution solves the problem that at present, alcohol is volatile, consequently instability of the concentration of alcohol in the fountain solution is prone to being caused, thesurface tension and hydrophilia of the fountain solution are influenced, and finally the printing effect of printing ink is influenced.

Description

technical field

[0001] The invention belongs to the field of chemical industry, and in particular relates to a printing dampening solution. Background technique

[0002] Offset printing uses the two natural laws of immiscibility of oil and water and selective adsorption of solids to liquids, and builds the copied graphics and blank parts on the surface of the unified printing plate after technical treatment, so that the blank part has Strong water absorption performance, the graphic part is lipophilic and water repellent. In the printing process, water is supplied to the entire printing plate first, so that the blank part of the layout absorbs water to form a water film, and then ink is supplied to the printing plate. At this time, since there is a layer of water film in the blank part of the printing plate, the ink cannot be adsorbed on the blank part, and the graphic part is water-repellent and lipophilic and absorbs a layer of ink. Therefore, the role of fountain soluti...

Examples

preparation example Construction

[0017] The preparation method of tensio-active agent, comprises the steps:

[0018] (1) Take imidazole and add trimethylolpropane triacrylate in a mass ratio of 3:1 to mix, then add triethylamine with 0.3~0.6% of imidazole mass to obtain a mixture, take the mixture in a mass ratio of 1:9 and add anhydrous Ethanol, nitrogen protection, stirred and mixed at 75~80°C for 18~24h, cooled to room temperature to obtain the cooled product, took the cooled product and added distilled water at a mass ratio of 1:5, stirred and mixed for 20~30min, stood still for 1~2h, took The precipitate was washed with distilled water and distilled under reduced pressure to obtain a reduced-pressure distillate;

[0019] (2) Take the vacuum distillate and add 1,4-dibromobutane and absolute ethanol according to the mass ratio of 1~3:1:8~12, pass through nitrogen protection, stir and mix at 75~80°C for 8~10h , distilled under reduced pressure, concentrated to obtain a concentrate, take the concentrate and...

Embodiment 1

[0026] The preparation method of surfactant, comprises the steps:

[0027] (1) Take imidazole and add trimethylolpropane triacrylate in a mass ratio of 3:1 to mix, then add triethylamine with 0.3% of imidazole mass to obtain a mixture, take the mixture and add absolute ethanol in a mass ratio of 1:9, Introduce nitrogen protection, stir and mix at 75°C for 18 hours, cool to room temperature to obtain the cooled product, take the cooled product and add distilled water at a mass ratio of 1:5, stir and mix for 20 minutes, let it stand for 1 hour, take the precipitate, wash it with distilled water, and distill under reduced pressure to obtain vacuum distillate;

[0028] (2) Take the vacuum distillate and add 1,4-dibromobutane and absolute ethanol at a mass ratio of 1:1:8, pass through nitrogen protection, stir and mix at 75°C for 8 hours, distill under reduced pressure, and concentrate to obtain Concentrate, take the concentrate, add ethyl acetate at a mass ratio of 1:15, let it s...

Embodiment 2

[0035] The preparation method of tensio-active agent, comprises the steps:

[0036] (1) Take imidazole and add trimethylolpropane triacrylate in a mass ratio of 3:1 to mix, then add triethylamine with 0.6% of imidazole mass to obtain a mixture, take the mixture and add absolute ethanol in a mass ratio of 1:9, Introduce nitrogen protection, stir and mix at 80°C for 24 hours, cool to room temperature to obtain the cooled product, take the cooled product and add distilled water at a mass ratio of 1:5, stir and mix for 30 minutes, let it stand for 2 hours, take the precipitate, wash it with distilled water, and distill under reduced pressure to obtain vacuum distillate;

[0037] (2) Take the vacuum distillate and add 1,4-dibromobutane and absolute ethanol at a mass ratio of 3:1:12, pass through nitrogen protection, stir and mix at 80°C for 10 hours, distill under reduced pressure, and concentrate to obtain Concentrate, take the concentrate, add ethyl acetate at a mass ratio of 1:...

technical field

[0001] The invention belongs to the field of chemical industry, and in particular relates to a printing dampening solution. Background technique

[0002] Offset printing uses the two natural laws of immiscibility of oil and water and selective adsorption of solids to liquids, and builds the copied graphics and blank parts on the surface of the unified printing plate after technical treatment, so that the blank part has Strong water absorption performance, the graphic part is lipophilic and water repellent. In the printing process, water is supplied to the entire printing plate first, so that the blank part of the layout absorbs water to form a water film, and then ink is supplied to the printing plate. At this time, since there is a layer of water film in the blank part of the printing plate, the ink cannot be adsorbed on the blank part, and the graphic part is water-repellent and lipophilic and absorbs a layer of ink. Therefore, the role of fountain soluti...

Examples

preparation example Construction

[0017] The preparation method of tensio-active agent, comprises the steps:

[0018] (1) Take imidazole and add trimethylolpropane triacrylate in a mass ratio of 3:1 to mix, then add triethylamine with 0.3~0.6% of imidazole mass to obtain a mixture, take the mixture in a mass ratio of 1:9 and add anhydrous Ethanol, nitrogen protection, stirred and mixed at 75~80°C for 18~24h, cooled to room temperature to obtain the cooled product, took the cooled product and added distilled water at a mass ratio of 1:5, stirred and mixed for 20~30min, stood still for 1~2h, took The precipitate was washed with distilled water and distilled under reduced pressure to obtain a reduced-pressure distillate;

[0019] (2) Take the vacuum distillate and add 1,4-dibromobutane and absolute ethanol according to the mass ratio of 1~3:1:8~12, pass through nitrogen protection, stir and mix at 75~80°C for 8~10h , distilled under reduced pressure, concentrated to obtain a concentrate, take the concentrate and...

Embodiment 1

[0026] The preparation method of surfactant, comprises the steps:

[0027] (1) Take imidazole and add trimethylolpropane triacrylate in a mass ratio of 3:1 to mix, then add triethylamine with 0.3% of imidazole mass to obtain a mixture, take the mixture and add absolute ethanol in a mass ratio of 1:9, Introduce nitrogen protection, stir and mix at 75°C for 18 hours, cool to room temperature to obtain the cooled product, take the cooled product and add distilled water at a mass ratio of 1:5, stir and mix for 20 minutes, let it stand for 1 hour, take the precipitate, wash it with distilled water, and distill under reduced pressure to obtain vacuum distillate;

[0028] (2) Take the vacuum distillate and add 1,4-dibromobutane and absolute ethanol at a mass ratio of 1:1:8, pass through nitrogen protection, stir and mix at 75°C for 8 hours, distill under reduced pressure, and concentrate to obtain Concentrate, take the concentrate, add ethyl acetate at a mass ratio of 1:15, let it s...

Embodiment 2

[0035] The preparation method of tensio-active agent, comprises the steps:

[0036] (1) Take imidazole and add trimethylolpropane triacrylate in a mass ratio of 3:1 to mix, then add triethylamine with 0.6% of imidazole mass to obtain a mixture, take the mixture and add absolute ethanol in a mass ratio of 1:9, Introduce nitrogen protection, stir and mix at 80°C for 24 hours, cool to room temperature to obtain the cooled product, take the cooled product and add distilled water at a mass ratio of 1:5, stir and mix for 30 minutes, let it stand for 2 hours, take the precipitate, wash it with distilled water, and distill under reduced pressure to obtain vacuum distillate;

[0037] (2) Take the vacuum distillate and add 1,4-dibromobutane and absolute ethanol at a mass ratio of 3:1:12, pass through nitrogen protection, stir and mix at 80°C for 10 hours, distill under reduced pressure, and concentrate to obtain Concentrate, take the concentrate, add ethyl acetate at a mass ratio of 1:...