Surface active non-alcoholic fountain functional water and method of making same

Abstract

This invention relates to the field of offset printing technology, and in particular to a surface-active alcohol-free dampening solution and its preparation method. The surface-active alcohol-free dampening solution is composed of the following raw materials in parts by weight: 8-15 parts glycerol, 8-12 parts disodium hydrogen phosphate, 6-10 parts citric acid, 4-6 parts gum arabic, 3-6 parts propylene glycol, 2-5 parts ethylene glycol monobutyl ether, 0.8-1.5 parts magnesium nitrate, 2-4 parts dispersant, 0.6-1.0 parts metal protectant, 0.5-1.0 parts antibacterial agent, 1-2 parts compounding agent, 1-3 parts defoamer, 2-3 parts wetting agent, and 70-90 parts deionized water. The surface-active alcohol-free dampening solution prepared by this invention not only has excellent antioxidant properties but also excellent antibacterial properties, which to a certain extent extends its service life and ensures its quality. Furthermore, it can replace traditional alcohol dampening solutions, reducing toxicity, improving safety and environmental friendliness, while simultaneously improving printing effect and quality and reducing printing costs.

Description

Technical Field

[0001] This invention relates to the field of offset printing technology, and in particular to a surface-active alcohol-free dampening functional water and its preparation method. Background Technology

[0002] In offset printing, the image and non-image areas of the printing plate are almost on the same plane. During printing, to distinguish between the image and non-image areas, the water supply device in the printing plate unit first supplies water to the non-image areas, protecting them from ink penetration. Then, the ink supply device in the printing unit supplies ink to the printing plate. Because the non-image areas are protected by water, the ink can only be supplied to the image areas. Finally, the ink on the printing plate is transferred to the blanket, and the pressure between the blanket cylinder and the impression cylinder transfers the ink from the blanket to the substrate, completing one printing cycle. Therefore, offset printing is an indirect printing method.

[0003] In offset printing, dampening solution is required. This solution typically contains wetting agents, pH adjusters, and corrosion inhibitors to maintain the ink-water balance during printing, protect the printing plate and printing press from damage, and improve the quality of printed materials. Patent application CN201811653648.3 discloses a green, alcohol-free dampening solution composed of cellulose, citric acid, sodium citrate, surfactants, glycerin, preservatives, diethylene glycol, water-based defoamers, and purified water. While this dampening solution offers advantages such as high printing durability and environmental friendliness, its antioxidant properties are insufficient, and its antibacterial properties are relatively poor. This shortens its lifespan and affects its quality. Therefore, this invention provides a surface-active, alcohol-free dampening functional water and its preparation method to solve the aforementioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide a surface-active alcohol-free dampening solution and its preparation method. The prepared surface-active alcohol-free dampening solution not only possesses excellent antioxidant properties but also superior antibacterial properties, which extends its service life to a certain extent and ensures its quality. Furthermore, the surface-active alcohol-free dampening solution prepared by this invention can effectively replace traditional alcohol-based dampening solutions, reducing toxicity, improving safety and environmental friendliness, while simultaneously enhancing printing effects and quality and reducing printing costs.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A surface-active, alcohol-free, moisturizing functional water is composed of the following raw materials in parts by weight: 8-15 parts glycerol, 8-12 parts disodium hydrogen phosphate, 6-10 parts citric acid, 4-6 parts gum arabic, 3-6 parts propylene glycol, 2-5 parts ethylene glycol monobutyl ether, 0.8-1.5 parts magnesium nitrate, 2-4 parts dispersant, 0.6-1.0 parts metal protectant, 0.5-1.0 parts antibacterial agent, 1-2 parts compounding agent, 1-3 parts defoamer, 2-3 parts wetting agent, and 70-90 parts deionized water.

[0006] Furthermore, the preparation method of the dispersing agent includes the following steps: Step 1: Add 1,4-oxonitrohexane to ethyl acetate at a dosage ratio of 2-4 mol / L, then add myristyl bromide at a molar ratio of 0.3-0.5 times that of 1,4-oxonitrohexane. Mix and stir evenly, then keep the mixture at 60-65℃ for 12-15 hours. After the reaction is complete, first evaporate the ethyl acetate from the product component, then purify the remaining product component. Store the purified product for later use.

[0007] Step 2: Dissolve the purified product in chloroform at a dosage ratio of 0.15-0.2 g / mL, then add 2.5-3.0 times the mass of the purified product, mix and stir evenly, and keep the mixture at 60-65℃ for 5-8 hours. After the reaction is complete, remove the chloroform by rotary evaporation. The resulting reaction product is purified to obtain the dispersing agent.

[0008] Furthermore, the purification process in step one is as follows: the remaining product components are washed 2-3 times with deionized water and methanol aqueous solution with a volume concentration of 40-60%. The washed remaining product components are dissolved in chloroform at a mass of 1-3 times their weight, and anhydrous sodium sulfite at a mass of 0.1-0.15 times the mass of the remaining product components is added to remove the water. Then, the mixture is rotary evaporated at a temperature of 65-70°C for 30-50 minutes.

[0009] Furthermore, the purification process in step two is as follows: the reaction product is first washed 2 to 3 times with 3 to 5 times its mass of diethyl ether, then acetone of equal volume to diethyl ether is added and nitrogen gas is introduced, recrystallized at room temperature, the precipitate is removed, and then rotary evaporated at 60 to 65°C for 40 to 60 minutes.

[0010] Furthermore, the metal protectant is selected from any one of benzotriazole, benzoimidazole, triethanolamine, and diethanolamine.

[0011] Furthermore, the antibacterial agent is selected from any one of dodecyltrimethylammonium chloride, dodecyldimethylbenzylammonium chloride, and dodecyldimethylbenzylammonium bromide.

[0012] Furthermore, the compounding agent is composed of cashew phenol polyoxyethylene ether and 0.6 to 0.8 times its mass of 2-thioimidazol amino acid.

[0013] Furthermore, the defoamer is selected from any one of BYK-1610, BYK-025, HY-1040, and JY-821 defoamers.

[0014] Furthermore, the wetting agent is selected from any one of polyoxyethylene fatty alcohol ether, octylphenol polyoxyethylene ether, and coconut oil fatty alcohol monoethanolamide.

[0015] A method for preparing a surface-active alcohol-free functional water includes the following steps: accurately weighing each raw material according to the formula and adding deionized water into a mixing device; after the water temperature is raised to 40-55℃, adding the remaining raw materials; and emulsifying the mixture by stirring and keeping it warm to obtain the finished surface-active alcohol-free functional water.

[0016] Compared with the prior art, the beneficial effects of the present invention are: In this invention, 1,4-oxonitrohexane is first added to ethyl acetate, and myristyl bromide is then added. After mixing and stirring until homogeneous, the mixture is kept at a constant temperature and stirred to allow the 1,4-oxonitrohexane to undergo a substitution reaction with the myristyl bromide. After the reaction is complete, ethyl acetate is evaporated, and the remaining product is purified. The purified product is dissolved in chloroform, and trimethylene dibromide is added. After mixing and stirring until homogeneous, the purified product undergoes a substitution reaction with the trimethylene dibromide. After the reaction is complete, chloroform is evaporated, and the product is then purified to obtain a dispersing agent. The prepared dispersing agent can effectively reduce the surface tension of deionized water, allowing the raw materials to exist uniformly and stably in the dampening solution system. Furthermore, the dispersing agent prepared in this invention also has excellent antibacterial properties, and its synergistic effect with the antibacterial agent effectively ensures the antibacterial performance of the surface-active alcohol-free dampening functional water. The cashew phenol polyoxyethylene ether and 2-thioimidazol amino acid in the compound additives work synergistically to further improve the antioxidant properties of the surface-active alcohol-free functional water.

[0017] In summary, the surface-active alcohol-free dampening water prepared by this invention not only possesses excellent antioxidant properties but also superior antibacterial properties, which to a certain extent extends its service life and ensures its quality. Furthermore, the surface-active alcohol-free dampening water prepared by this invention can effectively replace traditional alcohol-based dampening solutions, reducing toxicity, improving safety and environmental friendliness, while simultaneously enhancing printing effects and quality and reducing printing costs. Detailed Implementation

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0019] A surface-active, alcohol-free functional water is composed of the following raw materials in parts by weight: 8 parts glycerol, disodium hydrogen phosphate, 6 parts citric acid, 4 parts gum arabic, 3 parts propylene glycol, 2 parts ethylene glycol monobutyl ether, 0.8 parts magnesium nitrate, 2 parts dispersant, 0.6 parts benzotriazole, 0.5 parts dodecyltrimethylammonium chloride, 1 part compounding agent, 1 part BYK-1610 defoamer, 2 parts polyoxyethylene fatty alcohol ether, and 70 parts deionized water; wherein the compounding agent is composed of cashew phenol polyoxyethylene ether and 0.6 times its weight of 2-thioimidazolium amino acid.

[0020] The preparation method of the dispersing agent includes the following steps: Step 1: Add 1,4-oxonitrohexane to ethyl acetate at a dosage ratio of 2 mol / L, then add myristyl bromide at a molar ratio of 0.3 times that of 1,4-oxonitrohexane. Mix and stir evenly, then keep the mixture at 60°C and stir for 12 hours. After the reaction is complete, first evaporate the ethyl acetate from the product component, then purify the remaining product component. Store the purified product for later use.

[0021] The purification process involves washing the remaining product components twice with deionized water and a 40% methanol aqueous solution. The washed remaining product components are then dissolved in an equal mass of chloroform, and anhydrous sodium sulfite with a mass equal to 0.1 times that of the remaining product components is added to remove the water. Finally, the mixture is rotary evaporated at 65°C for 30 minutes.

[0022] Step 2: Dissolve the purified product in chloroform at a dosage ratio of 0.15 g / mL, then add 2.5 times the mass of the purified product, mix and stir evenly, and keep the mixture at 60°C for 5 hours. After the reaction is complete, remove the chloroform by rotary evaporation. The resulting reaction product is purified to obtain the dispersing agent.

[0023] The purification process involves washing the reaction product twice with 3 times its mass of diethyl ether, then adding an equal volume of acetone to the diethyl ether and purging with nitrogen. The product is then recrystallized at room temperature to remove the precipitate, and finally rotary evaporated at 60°C for 40 minutes.

[0024] The critical micelle concentration of the dispersant prepared in this embodiment is 0.0038 g / L, which can reduce the surface tension of pure water to 23.16 mN / m.

[0025] A method for preparing a surface-active alcohol-free functional water includes the following steps: accurately weighing each raw material according to the formula and adding deionized water into a mixing device; after the water temperature rises to 40°C, adding the remaining raw materials; and emulsifying the mixture by stirring while keeping it warm to obtain the finished surface-active alcohol-free functional water. Example 2

[0026] The preparation method of the surface-active alcohol-free lubricating functional water provided in this embodiment is basically the same as that in Example 1, except that the specific composition of the surface-active alcohol-free lubricating functional water and the preparation method of the dispersing agent are not exactly the same. The specific composition of the surface-active alcohol-free lubricating functional water and the preparation method of the dispersing agent in this embodiment are as follows: A surface-active, alcohol-free functional water is composed of the following raw materials in parts by weight: 12 parts glycerol, 10 parts disodium hydrogen phosphate, 8 parts citric acid, 5 parts gum arabic, 4 parts propylene glycol, 3 parts ethylene glycol monobutyl ether, 1.2 parts magnesium nitrate, 3 parts dispersant, 0.8 parts benzoimidazole, 0.7 parts dodecyl dimethyl benzyl ammonium chloride, 1.5 parts compounding agent, 2 parts BYK-025 defoamer, 2.5 parts octylphenol polyoxyethylene ether, and 80 parts deionized water; wherein the compounding agent is composed of cashew phenol polyoxyethylene ether and 0.7 times its weight of 2-thioimidazole amino acid.

[0027] The preparation method of the dispersing agent includes the following steps: Step 1: Add 1,4-oxonitrohexane to ethyl acetate at a dosage ratio of 3 mol / L, then add myristyl bromide at a molar ratio of 0.4 times that of 1,4-oxonitrohexane. Mix and stir evenly, then keep the mixture at 60°C and stir for 14 hours. After the reaction is complete, first evaporate the ethyl acetate from the product component, then purify the remaining product component. Store the purified product for later use.

[0028] The purification process involves washing the remaining product components three times with deionized water and a 50% methanol aqueous solution. The washed product components are then dissolved in chloroform at twice their mass, and anhydrous sodium sulfite at 0.15 times the mass of the remaining product components is added to remove the water. Finally, the mixture is rotary evaporated at 65°C for 40 minutes.

[0029] Step 2: Dissolve the purified product in chloroform at a ratio of 0.15 g / mL, then add 2.5 times the mass of the purified product, mix and stir evenly, and keep the mixture at 65°C for 6 hours. After the reaction is complete, remove the chloroform by rotary evaporation. The resulting reaction product is purified to obtain the dispersing agent.

[0030] The purification process involves washing the reaction product twice with 4 times its mass of diethyl ether, then adding an equal volume of acetone to the diethyl ether and purging with nitrogen gas. The product is then recrystallized at room temperature to remove the precipitate, and finally rotary evaporated at 60°C for 50 minutes.

[0031] The critical micelle concentration of the dispersant prepared in this embodiment is 0.0037 g / L, which can reduce the surface tension of pure water to 22.96 mN / m. Example 3

[0032] The preparation method of the surface-active alcohol-free lubricating functional water provided in this embodiment is basically the same as that in Example 1, except that the specific composition of the surface-active alcohol-free lubricating functional water and the preparation method of the dispersing agent are not exactly the same. The specific composition of the surface-active alcohol-free lubricating functional water and the preparation method of the dispersing agent in this embodiment are as follows: A surface-active, alcohol-free functional water is composed of the following raw materials in parts by weight: 15 parts glycerol, 12 parts disodium hydrogen phosphate, 10 parts citric acid, 6 parts gum arabic, 6 parts propylene glycol, 5 parts ethylene glycol monobutyl ether, 1.5 parts magnesium nitrate, 4 parts dispersant, 1.0 part triethanolamine, 1.0 part dodecyl dimethyl benzyl ammonium bromide, 2 parts compounding agent, 3 parts HY-1040 defoamer, 3 parts coconut oil fatty alcohol monoethanolamide, and 90 parts deionized water; wherein the compounding agent is composed of cashew phenol polyoxyethylene ether and 0.8 times its weight of 2-thioimidazolium amino acid.

[0033] The preparation method of the dispersing agent includes the following steps: Step 1: Add 1,4-oxonitrohexane to ethyl acetate at a dosage ratio of 4 mol / L, then add myristyl bromide at a molar ratio of 0.5 times that of 1,4-oxonitrohexane. Mix and stir evenly, then keep the mixture at 65°C and stir for 15 hours. After the reaction is complete, first evaporate the ethyl acetate from the product component, then purify the remaining product component. Store the purified product for later use.

[0034] The purification process involves washing the remaining product components three times with deionized water and a 60% methanol aqueous solution. The washed remaining product components are then dissolved in chloroform at a mass of three times their mass, and anhydrous sodium sulfite at a mass of 0.15 times the mass of the remaining product components is added to remove the water. Finally, the mixture is rotary evaporated at 70°C for 50 minutes.

[0035] Step 2: Dissolve the purified product in chloroform at a dosage ratio of 0.2 g / mL, then add trimethylene dibromide at a mass of 3.0 times that of the purified product, mix and stir evenly, and keep the mixture at 65°C for 8 hours. After the reaction is complete, remove the chloroform by rotary evaporation. The resulting reaction product is purified to obtain the dispersing agent.

[0036] The purification process involves washing the reaction product three times with 5 times its mass of diethyl ether, then adding an equal volume of acetone to the diethyl ether and purging with nitrogen gas. The product is then recrystallized at room temperature to remove the precipitate, and finally rotary evaporated at 65°C for 60 minutes.

[0037] The critical micelle concentration of the dispersant prepared in this embodiment is 0.0037 g / L, which can reduce the surface tension of pure water to 23.08 mN / m.

[0038] Comparative Example 1: The main difference between this comparative example and Example 1 is that no dispersing agent was used in this comparative example.

[0039] Comparative Example 2: The main difference between this comparative example and Example 1 is that cashew phenol polyoxyethylene ether is used instead of an equal amount of compounding additives in this comparative example.

[0040] Comparative Example 3: The main difference between this comparative example and Example 1 is that this comparative example uses 2-thioimidazolium amino acid instead of an equal amount of compounding adjuvants.

[0041] Performance testing The relevant properties of the surface-active alcohol-free functional water samples provided in Examples 1-3 and Comparative Examples 1-3 were tested respectively, and the test data are recorded in the table below:

[0042] By comparing and analyzing the relevant data in the table, it can be seen that the surface-active alcohol-free dampening water prepared by this invention not only has excellent antioxidant properties but also excellent antibacterial properties, which to a certain extent extends its service life and ensures its quality. Furthermore, the surface-active alcohol-free dampening water prepared by this invention can effectively replace traditional alcohol-based dampening solutions, reducing toxicity, improving safety and environmental friendliness, while simultaneously improving printing effects and quality and reducing printing costs. Therefore, it is evident that the surface-active alcohol-free dampening water and its preparation method provided by this invention have a broader market prospect and are more suitable for widespread application.

[0043] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A surface-active, alcohol-free functional water, characterized in that, It is composed of the following raw materials in parts by weight: 8-15 parts glycerol, 8-12 parts disodium hydrogen phosphate, 6-10 parts citric acid, 4-6 parts gum arabic, 3-6 parts propylene glycol, 2-5 parts ethylene glycol monobutyl ether, 0.8-1.5 parts magnesium nitrate, 2-4 parts dispersing agent, 0.6-1.0 parts metal protectant, 0.5-1.0 parts antibacterial agent, 1-2 parts compounding agent, 1-3 parts defoamer, 2-3 parts wetting agent, and 70-90 parts deionized water; The method for preparing the dispersing agent includes the following steps: Step 1: Add 1,4-oxonitrohexane to ethyl acetate at a dosage ratio of 2-4 mol / L, then add myristyl bromide at a molar ratio of 0.3-0.5 times that of 1,4-oxonitrohexane. Mix and stir evenly, then keep the mixture at 60-65℃ for 12-15 hours. After the reaction is complete, first evaporate the ethyl acetate from the product component, then purify the remaining product component. Store the purified product for later use. Step 2: Dissolve the purified product in chloroform at a dosage ratio of 0.15-0.2 g / mL, then add 2.5-3.0 times the mass of the purified product, mix and stir evenly, and keep the mixture at 60-65℃ for 5-8 hours. After the reaction is complete, remove the chloroform by rotary evaporation. The resulting reaction product is purified to obtain the dispersing agent.

2. The surface-active, alcohol-free functional water according to claim 1, characterized in that, The purification process in step one is as follows: wash the remaining product components 2 to 3 times with deionized water and methanol aqueous solution with a volume concentration of 40 to 60%. Dissolve the remaining product components after washing in chloroform with a mass of 1 to 3 times the mass of the product components, and add anhydrous sodium sulfite with a mass of 0.1 to 0.15 times the mass of the remaining product components to remove the water. Then, rotary evaporate at a temperature of 65 to 70°C for 30 to 50 minutes.

3. The surface-active alcohol-free functional water according to claim 1, characterized in that, The purification process in step two is as follows: the reaction product is first washed 2 to 3 times with 3 to 5 times its mass of diethyl ether, then acetone of equal volume to diethyl ether is added and nitrogen gas is introduced. The product is recrystallized at room temperature, the precipitate is removed, and then it is rotary evaporated at 60 to 65°C for 40 to 60 minutes.

4. The surface-active alcohol-free functional water according to claim 1, characterized in that: The metal protectant is selected from any one of benzotriazole, benzoimidazole, triethanolamine, and diethanolamine.

5. The surface-active alcohol-free functional water according to claim 1, characterized in that: The antibacterial agent is selected from any one of dodecyltrimethylammonium chloride, dodecyldimethylbenzylammonium chloride, and dodecyldimethylbenzylammonium bromide.

6. The surface-active, alcohol-free functional water according to claim 1, characterized in that: The compounding agent is composed of cashew phenol polyoxyethylene ether and 0.6 to 0.8 times its mass of 2-thioimidazol amino acid.

7. The surface-active alcohol-free functional water according to claim 1, characterized in that: The defoamer is selected from any one of BYK-1610, BYK-025, HY-1040, and JY-821 defoamers.

8. The surface-active, alcohol-free functional water according to claim 1, characterized in that: The wetting agent is selected from any one of polyoxyethylene fatty alcohol ether, octylphenol polyoxyethylene ether, and coconut oil fatty alcohol monoethanolamide.

9. A method for preparing a surface-active, alcohol-free functional water according to any one of claims 1 to 8, characterized in that, The process includes the following steps: accurately weigh each raw material according to the formula and put deionized water into the mixing equipment. After the water temperature rises to 40-55℃, add the remaining raw materials. After keeping the water warm and stirring to emulsify it, the surface-active alcohol-free functional water product is obtained.

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