CN113459697A - Anti-calcification alcohol-free fountain solution and preparation method thereof - Google Patents
Anti-calcification alcohol-free fountain solution and preparation method thereof Download PDFInfo
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- CN113459697A CN113459697A CN202110915057.4A CN202110915057A CN113459697A CN 113459697 A CN113459697 A CN 113459697A CN 202110915057 A CN202110915057 A CN 202110915057A CN 113459697 A CN113459697 A CN 113459697A
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- 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
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Abstract
The invention relates to the technical field of fountain solution, in particular to anti-calcification alcohol-free fountain solution and a preparation method thereof; the fountain solution comprises the following components in parts by weight: 7-10 parts of disodium hydrogen phosphate, 1.5-2.5 parts of auxiliary surface active auxiliary agent, 2.0-3.6 parts of compound nonionic surfactant, 10-15 parts of citric acid, 25-40 parts of glycerol, 0.8-1.2 parts of perilla essential oil, 0.7-1.2 parts of zinc nitrate, 0.3-0.6 part of polyhexamethylene guanidine, 0.3-0.8 part of aqueous polysiloxane antifoaming agent, 0.3-0.5 part of hydroxy ethylidene diphosphonic acid, 2.5-4.8 parts of carboxymethyl cellulose, 1.0-1.8 parts of metal chelating agent and 85-100 parts of deionized water; the fountain solution prepared by the invention has good antibacterial performance, and the surface tension of the fountain solution is small, so that the printing quality is ensured; in addition, the environment-friendly paint does not contain volatile alcohol solvents, does not pollute the environment, does not damage human health, and is environment-friendly and safe.
Description
Technical Field
The invention relates to the technical field of fountain solution, in particular to anti-calcification alcohol-free fountain solution and a preparation method thereof.
Background
Printing is a technique of transferring ink to the surface of paper, textiles, plastics, leather, PVC, PC, or other materials by plate making, inking, and pressing original documents such as characters, pictures, photographs, and forgery prevention, and copying the contents of the original documents in bulk. Printing is the process of transferring the approved printing plate to the printing stock by printing machine and special ink.
In the printing field, a fountain solution, also called dampening solution, water tank solution or fountain solution, is often used. The fountain solution contains a wetting agent to modify the surface tension of the plate surface, and PREMIERFOUNT with the addition of a wetting control component also helps to reduce the amount of ink while achieving clear dots and vivid colors.
Although the fountain solution has the advantages, the disadvantages are relatively obvious. For example, most of the raw materials contain alcohol (mainly isopropanol), so that the emission of the alcohol not only pollutes the environment, but also can cause fire, and has potential danger to the environment and human health. Moreover, the antibacterial performance of the antibacterial agent is relatively poor, so that the service life of the antibacterial agent is relatively shortened. In addition, the calcification preventing capability and the dampening capability of the printing plate are relatively poor, which influences the quality of printing to a certain extent.
Based on the above, it is an urgent technical problem to be solved by those skilled in the art to provide an anti-calcification alcohol-free fountain solution and a preparation method thereof.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the calcification-preventing alcohol-free fountain solution and the preparation method thereof. Moreover, the surface tension of the printing ink is small, the wetting capability is strong, the anti-calcification capability is excellent, the probability of dirty printing in the printing process can be effectively reduced, and the printing quality is ensured. In addition, the fountain solution prepared by the invention does not contain volatile alcohol solvents, does not pollute the environment, does not damage the health of human bodies, and is environment-friendly and safe.
In order to achieve the purpose, the invention provides the following technical scheme:
the anti-calcification alcohol-free fountain solution comprises the following components in parts by weight: 7-10 parts of disodium hydrogen phosphate, 1.5-2.5 parts of auxiliary surface active auxiliary agent, 2.0-3.6 parts of compound nonionic surfactant, 10-15 parts of citric acid, 25-40 parts of glycerol, 0.8-1.2 parts of perilla essential oil, 0.7-1.2 parts of zinc nitrate, 0.3-0.6 part of polyhexamethylene guanidine, 0.3-0.8 part of aqueous polysiloxane defoaming agent, 0.3-0.5 part of hydroxy ethylidene diphosphonic acid, 2.5-4.8 parts of carboxymethyl cellulose, 1.0-1.8 parts of metal chelating agent and 85-100 parts of deionized water.
Still further, the method of making the co-surfactant comprises the steps of:
i, according to a formula 1: 5-8, uniformly mixing 2, 3-dihydroxypropyl-trimethyl ammonium chloride and 3, 4, 5-trihydroxybenzoic acid, and adding a proper amount of organic solvent into the mixture of the two to dissolve the mixture; then adding a proper amount of reaction promoter into the obtained mixed component, and mechanically stirring for 2-4 hours at the temperature of 100-120 ℃; then distilling off the organic solvent under the condition of 10-20 kPa under reduced pressure, and storing the obtained reaction product for later use;
II, adding 1-3 times of lauric acid in molar weight of 2, 3-dihydroxypropyl-trimethyl ammonium chloride into the reaction product obtained in the step I, and then adding a proper amount of organic solvent to dissolve the mixture; then adding a proper amount of reaction promoter into the obtained mixed solution, and carrying out heat preservation reaction for 4-10 h at the temperature of 100-130 ℃; after the reaction is finished, purifying the obtained reaction crude product to obtain a solid substance, namely the finished product of the auxiliary surface active auxiliary agent.
Furthermore, the organic solvent used in the step I and the step II is nitrobenzene; and the dosage of the organic solvent in the step I is 4-7 times of the weight of the mixture, and the dosage of the organic solvent used in the step II is 3-6 times of the total weight of the reaction product and the lauric acid.
Furthermore, the reaction promoter used in the step I and the step II is concentrated sulfuric acid, the dosage of the reaction promoter in the step I is 2-5% of the weight of the mixed components, and the dosage of the reaction promoter in the step II is 2-6% of the weight of the mixed liquid.
Furthermore, the method for purifying the crude reaction product obtained in the step II comprises the following steps: adding trichloromethane with the mass being 3-6 times of that of the obtained reaction crude product into the obtained reaction crude product, uniformly mixing and stirring, and then dripping the obtained solution into deionized water with the mass being 3-7 times of that of the trichloromethane for precipitation; and after the precipitation is finished, taking the lower layer solution, and carrying out reduced pressure distillation treatment on the lower layer solution under the condition of 10-20 kPa to remove the trichloromethane, thus obtaining the purified auxiliary surface active auxiliary agent finished product.
Furthermore, the metal chelating agent is disodium ethylene diamine tetraacetate.
Furthermore, the extraction method of the perilla frutescens essential oil comprises the following steps: cleaning folium Perillae, pulverizing, and performing supercritical extraction in a supercritical carbon dioxide extraction tank to obtain Perilla essential oil; wherein, in the extraction process, the feed-liquid ratio is 1: 12-15 g/mL, carbon dioxide flow of 30-40 kg/h, extraction temperature of 40-70 ℃, extraction pressure of 20-25 MPa, separation temperature of 30-40 ℃, separation pressure of 5-6.5 MPa, and extraction time of 2-3 h.
Furthermore, the compound nonionic surfactant is prepared from fatty alcohol-polyoxyethylene ether and alkyl glycoside according to the weight ratio of 1-2: 1, and mixing the components in a molar ratio.
Furthermore, the aqueous defoaming agent is any one of mineral oil aqueous defoaming agent, organic silicon aqueous defoaming agent and polyether aqueous defoaming agent.
A preparation method of anti-calcification alcohol-free fountain solution comprises the following steps:
weighing the raw materials of the components according to the formula, transferring deionized water, hydroxyethylidene diphosphonic acid, a metal chelating agent and citric acid into a dispersion kettle, sequentially putting zinc nitrate and carboxymethyl cellulose into the dispersion kettle, mechanically stirring uniformly, transferring the rest raw materials into the dispersion kettle, and mechanically stirring at the speed of 180-250 r/min for 30-40 min; after stirring and mixing are finished, the obtained mixed solution is the finished product of the calcification-preventing alcohol-free fountain solution.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
1. according to the invention, 2, 3-dihydroxypropyl-trimethyl ammonium chloride and 3, 4, 5-trihydroxybenzoic acid are used as raw materials, the raw materials and the 2, 3-dihydroxypropyl-trimethyl ammonium chloride are subjected to chemical reaction under the action of a reaction promoter, the prepared reaction product and lauric acid are subjected to reaction under the action of the reaction promoter, and finally, a crude product of the auxiliary surface active auxiliary agent is prepared, and then, a high-purity auxiliary surface active auxiliary agent finished product is prepared after purification treatment. Compared with the traditional surfactant, the obtained auxiliary surfactant auxiliary has excellent interfacial activity and intersecting critical micelle concentration. Moreover, the antibacterial agent also has good antibacterial performance. The purple perilla essential oil, the polyhexamethylene guanidine and the citric acid are mutually cooperated, so that the antibacterial capability of the fountain solution can be effectively improved, the breeding of bacteria or microorganisms on the fountain solution is effectively reduced, and the quality of the fountain solution is ensured.
2. According to the invention, hydroxyethylidene diphosphonic acid and a metal chelating agent are used as raw materials for preparing the fountain solution, and the raw materials can interact with calcium and magnesium ions in hard water to soften the hard water. Has certain calcification preventing effect. Moreover, the use of the compound nonionic surfactant can effectively reduce the surface tension of the fountain solution, and the compound nonionic surfactant is matched with the use of an auxiliary surface active auxiliary agent, so that the surface tension of the prepared fountain solution is further reduced, the wetting capacity of the fountain solution is further improved, and the printing quality is effectively ensured.
3. The fountain solution prepared by the invention does not contain volatile alcohol solvents, is safe and environment-friendly, and does not cause damage to the environment and human bodies. In addition, the fountain solution prepared by the method can well protect metal plate surfaces, can effectively reduce the probability of dirty plates in the printing process, and effectively ensures the quality of printing.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be further described with reference to the following examples.
Example 1
The anti-calcification alcohol-free fountain solution comprises the following components in parts by weight: 7 parts of disodium hydrogen phosphate, 1.5 parts of auxiliary surface active auxiliary agent, 2.0 parts of compound nonionic surfactant, 10 parts of citric acid, 25 parts of glycerol, 0.8 part of perilla essential oil, 0.7 part of zinc nitrate, 0.3 part of polyhexamethylene guanidine, 0.3 part of mineral oil aqueous defoaming agent, 0.3 part of hydroxyethylidene diphosphonic acid, 2.5 parts of carboxymethyl cellulose, 1.0 part of disodium ethylene diamine tetraacetate and 85 parts of deionized water.
The preparation method of the auxiliary surface active assistant comprises the following steps:
i, according to a formula 1: 5, uniformly mixing 2, 3-dihydroxypropyl-trimethyl ammonium chloride and 3, 4, 5-trihydroxybenzoic acid, and then adding a proper amount of organic solvent into the mixture of the two to dissolve the mixture; then adding a proper amount of reaction accelerator into the obtained mixed components, and mechanically stirring for 2 hours at the temperature of 100 ℃; then distilling off the organic solvent under the condition of 10kPa under reduced pressure, and storing the obtained reaction product for later use;
II, adding lauric acid with the molar weight equal to that of 2, 3-dihydroxypropyl-trimethyl ammonium chloride into the reaction product obtained in the step I, and then adding a proper amount of organic solvent to dissolve the mixture; then adding a proper amount of reaction promoter into the obtained mixed solution, and carrying out heat preservation reaction for 4 hours at the temperature of 100 ℃; after the reaction is finished, purifying the obtained reaction crude product to obtain a solid substance, namely the finished product of the auxiliary surface active auxiliary agent.
The organic solvent used in the step I and the step II is nitrobenzene; and the dosage of the organic solvent in the step I is 4 times of the weight of the mixture, and the dosage of the organic solvent in the step II is 3 times of the total weight of the reaction product and the lauric acid.
The reaction promoter used in the step I and the step II is concentrated sulfuric acid, the dosage of the reaction promoter in the step I is 2% of the weight of the mixed components, and the dosage of the reaction promoter in the step II is 2% of the weight of the mixed liquid.
The purification treatment method of the reaction crude product obtained in the step II comprises the following steps: adding trichloromethane with the mass 3 times of that of the obtained reaction crude product into the obtained reaction crude product, uniformly mixing and stirring, and then dripping the obtained solution into deionized water with the mass 3 times of that of the trichloromethane for precipitation; and after the precipitation is finished, taking the lower layer solution, and carrying out reduced pressure distillation treatment on the lower layer solution under the condition of 10kPa to remove the trichloromethane in the lower layer solution, thus obtaining the purified auxiliary surface active auxiliary agent finished product.
The extraction method of the perilla essential oil comprises the following steps: cleaning folium Perillae, pulverizing, and performing supercritical extraction in a supercritical carbon dioxide extraction tank to obtain Perilla essential oil; wherein, in the extraction process, the feed-liquid ratio is 1: 12g/mL, carbon dioxide flow of 30kg/h, extraction temperature of 40 deg.C, extraction pressure of 20MPa, separation temperature of 30 deg.C, separation pressure of 5MPa, and extraction time of 2 h.
The compound nonionic surfactant is prepared by mixing the amounts of fatty alcohol-polyoxyethylene ether, alkyl glycoside and the like.
A preparation method of anti-calcification alcohol-free fountain solution comprises the following steps:
weighing the raw materials according to the formula, transferring deionized water, hydroxyethylidene diphosphonic acid, a metal chelating agent and citric acid into a dispersion kettle, sequentially putting zinc nitrate and carboxymethyl cellulose into the dispersion kettle, mechanically stirring uniformly, transferring the rest raw materials into the dispersion kettle, and mechanically stirring at the speed of 180r/min for 30 min; after stirring and mixing are finished, the obtained mixed solution is the finished product of the calcification-preventing alcohol-free fountain solution.
Example 2
The calcification-preventing alcohol-free fountain solution provided by the embodiment is approximately the same as that in the embodiment 1, and the main differences are as follows:
the anti-calcification alcohol-free fountain solution comprises the following components in parts by weight: 8 parts of disodium hydrogen phosphate, 2 parts of auxiliary surface active auxiliary agent, 2.8 parts of compound nonionic surfactant, 12 parts of citric acid, 35 parts of glycerol, 1 part of perilla essential oil, 1 part of zinc nitrate, 0.5 part of polyhexamethylene guanidine, 0.6 part of organosilicon water-based defoaming agent, 0.4 part of hydroxyethylidene diphosphonic acid, 3.6 parts of carboxymethyl cellulose, 1.5 parts of disodium ethylene diamine tetraacetate and 90 parts of deionized water.
The preparation method of the auxiliary surface active assistant comprises the following steps:
i, according to a formula 1: 6, uniformly mixing 2, 3-dihydroxypropyl-trimethyl ammonium chloride and 3, 4, 5-trihydroxybenzoic acid in a molar ratio, and then adding a proper amount of organic solvent into the mixture of the two to dissolve the mixture; then adding a proper amount of reaction accelerator into the obtained mixed components, and mechanically stirring for 3 hours at the temperature of 110 ℃; then, distilling off the organic solvent under the condition of 15kPa under reduced pressure, and storing the obtained reaction product for later use;
II, adding lauric acid with the molar weight 2 times that of 2, 3-dihydroxypropyl-trimethyl ammonium chloride into the reaction product obtained in the step I, and then adding a proper amount of organic solvent to dissolve the mixture; then adding a proper amount of reaction promoter into the obtained mixed solution, and carrying out heat preservation reaction for 7 hours at the temperature of 120 ℃; after the reaction is finished, purifying the obtained reaction crude product to obtain a solid substance, namely the finished product of the auxiliary surface active auxiliary agent.
The organic solvent used in the step I and the step II is nitrobenzene; and the dosage of the organic solvent in the step I is 5 times of the weight of the mixture, and the dosage of the organic solvent in the step II is 4 times of the total weight of the reaction product and the lauric acid.
The reaction promoter used in the step I and the step II is concentrated sulfuric acid, the dosage of the reaction promoter in the step I is 3% of the weight of the mixed components, and the dosage of the reaction promoter in the step II is 4% of the weight of the mixed liquid.
The purification treatment method of the reaction crude product obtained in the step II comprises the following steps: adding trichloromethane with the mass being 4 times of that of the obtained reaction crude product into the obtained reaction crude product, uniformly mixing and stirring, and then dripping the obtained solution into deionized water with the mass being 5 times of that of the trichloromethane for precipitation; and after the precipitation is finished, taking the lower layer solution, and carrying out reduced pressure distillation treatment on the lower layer solution under the condition of 15kPa to remove the trichloromethane in the lower layer solution, thus obtaining the purified auxiliary surface active auxiliary agent finished product.
The extraction method of the perilla essential oil comprises the following steps: cleaning folium Perillae, pulverizing, and performing supercritical extraction in a supercritical carbon dioxide extraction tank to obtain Perilla essential oil; wherein, in the extraction process, the feed-liquid ratio is 1: 14g/mL, the flow rate of carbon dioxide is 35kg/h, the extraction temperature is set to 50 ℃, the extraction pressure is set to 20MPa, the separation temperature is 35 ℃, the separation pressure is 6MPa, and the extraction time is 2.5 h.
The compound nonionic surfactant is prepared from fatty alcohol-polyoxyethylene ether and alkyl glucoside according to the weight ratio of 1.5: 1, and mixing the components in a molar ratio.
Example 3
The calcification-preventing alcohol-free fountain solution provided by the embodiment is approximately the same as that in the embodiment 1, and the main differences are as follows:
the anti-calcification alcohol-free fountain solution comprises the following components in parts by weight: 10 parts of disodium hydrogen phosphate, 2.5 parts of auxiliary surface active auxiliary agent, 3.6 parts of compound nonionic surfactant, 15 parts of citric acid, 40 parts of glycerol, 1.2 parts of perilla essential oil, 1.2 parts of zinc nitrate, 0.6 part of polyhexamethylene guanidine, 0.8 part of polyether water-based defoaming agent, 0.5 part of hydroxyethylidene diphosphonic acid, 4.8 parts of carboxymethyl cellulose, 1.8 parts of disodium ethylene diamine tetraacetate and 100 parts of deionized water.
The preparation method of the auxiliary surface active assistant comprises the following steps:
i, according to a formula 1: 8, uniformly mixing 2, 3-dihydroxypropyl-trimethyl ammonium chloride and 3, 4, 5-trihydroxybenzoic acid, and then adding a proper amount of organic solvent into the mixture of the two to dissolve the mixture; then adding a proper amount of reaction accelerator into the obtained mixed components, and mechanically stirring for 4 hours at the temperature of 120 ℃; then distilling off the organic solvent under the condition of 20kPa under reduced pressure, and storing the obtained reaction product for later use;
II, adding lauric acid with the molar weight being 3 times that of 2, 3-dihydroxypropyl-trimethyl ammonium chloride into the reaction product obtained in the step I, and then adding a proper amount of organic solvent to dissolve the mixture; then adding a proper amount of reaction promoter into the obtained mixed solution, and carrying out heat preservation reaction for 10 hours at the temperature of 130 ℃; after the reaction is finished, purifying the obtained reaction crude product to obtain a solid substance, namely the finished product of the auxiliary surface active auxiliary agent.
The organic solvent used in the step I and the step II is nitrobenzene; and the dosage of the organic solvent in the step I is 7 times of the weight of the mixture, and the dosage of the organic solvent in the step II is 6 times of the total weight of the reaction product and the lauric acid.
The reaction promoter used in the step I and the step II is concentrated sulfuric acid, the dosage of the reaction promoter in the step I is 5% of the weight of the mixed components, and the dosage of the reaction promoter in the step II is 6% of the weight of the mixed liquid.
The purification treatment method of the reaction crude product obtained in the step II comprises the following steps: adding chloroform with the mass 6 times of that of the obtained reaction crude product into the obtained reaction crude product, uniformly mixing and stirring, and then dripping the obtained solution into deionized water with the mass 7 times of that of the chloroform for precipitation; and after the precipitation is finished, taking the lower layer solution, and carrying out reduced pressure distillation treatment on the lower layer solution under the condition of 20kPa to remove the trichloromethane in the lower layer solution, thus obtaining the purified auxiliary surface active auxiliary agent finished product.
The extraction method of the perilla essential oil comprises the following steps: cleaning folium Perillae, pulverizing, and performing supercritical extraction in a supercritical carbon dioxide extraction tank to obtain Perilla essential oil; wherein, in the extraction process, the feed-liquid ratio is 1: 15g/mL, 40kg/h of carbon dioxide flow, 70 ℃ of extraction temperature, 25MPa of extraction pressure, 40 ℃ of separation temperature, 6.5MPa of separation pressure and 3h of extraction time.
The compound nonionic surfactant is prepared from fatty alcohol-polyoxyethylene ether and alkyl glucoside according to the weight ratio of 2: 1, and mixing the components in a molar ratio.
Comparative example 1
The calcification-preventing alcohol-free fountain solution and the preparation method provided by the embodiment are substantially the same as those of the embodiment 1, and the main differences are as follows: the raw materials do not contain auxiliary surface active auxiliary agent, and the auxiliary surface active auxiliary agent is replaced by the same amount of compound nonionic surfactant;
comparative example 2
The calcification-preventing alcohol-free fountain solution and the preparation method provided by the embodiment are substantially the same as those of the embodiment 1, and the main differences are as follows: the raw materials are replaced by the same amount of fatty alcohol-polyoxyethylene ether to compound the nonionic surfactant;
comparative example 3
The calcification-preventing alcohol-free fountain solution and the preparation method provided by the embodiment are substantially the same as those of the embodiment 1, and the main differences are as follows: the raw materials replace the compound nonionic surfactant with the same amount of alkyl glycoside;
performance testing
Equal amounts of fountain solutions prepared in examples 1-3 and comparative examples 1-3 were taken, and the relevant performance of each set of fountain solutions was examined, and the data obtained are recorded in the following table:
by analyzing the relevant data in the tables, the fountain solution prepared by the method has good antibacterial performance, effectively reduces the breeding of bacteria or microorganisms on the fountain solution, and prolongs the service life to a certain extent. Moreover, the surface tension of the printing ink is small, the wetting capability is strong, the anti-calcification capability is excellent, the probability of dirty printing in the printing process can be effectively reduced, and the printing quality is ensured. In addition, the fountain solution prepared by the invention does not contain volatile alcohol solvents, does not pollute the environment, does not damage the health of human bodies, and is environment-friendly and safe. Therefore, the fountain solution prepared by the method has wider market prospect and is more suitable for popularization.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. The calcification-preventing alcohol-free fountain solution is characterized by comprising the following components in parts by weight: 7-10 parts of disodium hydrogen phosphate, 1.5-2.5 parts of auxiliary surface active auxiliary agent, 2.0-3.6 parts of compound nonionic surfactant, 10-15 parts of citric acid, 25-40 parts of glycerol, 0.8-1.2 parts of perilla essential oil, 0.7-1.2 parts of zinc nitrate, 0.3-0.6 part of polyhexamethylene guanidine, 0.3-0.8 part of aqueous polysiloxane defoaming agent, 0.3-0.5 part of hydroxy ethylidene diphosphonic acid, 2.5-4.8 parts of carboxymethyl cellulose, 1.0-1.8 parts of metal chelating agent and 85-100 parts of deionized water.
2. The anti-calcification alcohol-free fountain solution as claimed in claim 1, wherein the preparation method of the auxiliary surfactant comprises the following steps:
i, according to a formula 1: 5-8, uniformly mixing 2, 3-dihydroxypropyl-trimethyl ammonium chloride and 3, 4, 5-trihydroxybenzoic acid, and adding a proper amount of organic solvent into the mixture of the two to dissolve the mixture; then adding a proper amount of reaction promoter into the obtained mixed component, and mechanically stirring for 2-4 hours at the temperature of 100-120 ℃; then distilling off the organic solvent under the condition of 10-20 kPa under reduced pressure, and storing the obtained reaction product for later use;
II, adding 1-3 times of lauric acid in molar weight of 2, 3-dihydroxypropyl-trimethyl ammonium chloride into the reaction product obtained in the step I, and then adding a proper amount of organic solvent to dissolve the mixture; then adding a proper amount of reaction promoter into the obtained mixed solution, and carrying out heat preservation reaction for 4-10 h at the temperature of 100-130 ℃; after the reaction is finished, purifying the obtained reaction crude product to obtain a solid substance, namely the finished product of the auxiliary surface active auxiliary agent.
3. The anti-calcification alcohol-free fountain solution as defined in claim 2, wherein: the organic solvent used in the step I and the step II is nitrobenzene; and the dosage of the organic solvent in the step I is 4-7 times of the weight of the mixture, and the dosage of the organic solvent used in the step II is 3-6 times of the total weight of the reaction product and the lauric acid.
4. The anti-calcification alcohol-free fountain solution as defined in claim 2, wherein: the reaction promoter used in the step I and the step II is concentrated sulfuric acid, the dosage of the reaction promoter in the step I is 2-5% of the weight of the mixed component, and the dosage of the reaction promoter in the step II is 2-6% of the weight of the mixed liquid.
5. The anti-calcification alcohol-free fountain solution as claimed in claim 2, wherein the purification treatment method of the reaction crude product obtained in the step II comprises the following steps: adding trichloromethane with the mass being 3-6 times of that of the obtained reaction crude product into the obtained reaction crude product, uniformly mixing and stirring, and then dripping the obtained solution into deionized water with the mass being 3-7 times of that of the trichloromethane for precipitation; and after the precipitation is finished, taking the lower layer solution, and carrying out reduced pressure distillation treatment on the lower layer solution under the condition of 10-20 kPa to remove the trichloromethane, thus obtaining the purified auxiliary surface active auxiliary agent finished product.
6. The anti-calcification alcohol-free fountain solution as defined in claim 1, wherein: the metal chelating agent is disodium ethylene diamine tetraacetate.
7. The calcification-preventing alcohol-free fountain solution as claimed in claim 1, wherein the extraction method of the perilla frutescens essential oil comprises the following steps: cleaning folium Perillae, pulverizing, and performing supercritical extraction in a supercritical carbon dioxide extraction tank to obtain Perilla essential oil; wherein, in the extraction process, the feed-liquid ratio is 1: 12-15 g/mL, carbon dioxide flow of 30-40 kg/h, extraction temperature of 40-70 ℃, extraction pressure of 20-25 MPa, separation temperature of 30-40 ℃, separation pressure of 5-6.5 MPa, and extraction time of 2-3 h.
8. The anti-calcification alcohol-free fountain solution as defined in claim 1, wherein: the compound nonionic surfactant is prepared from fatty alcohol-polyoxyethylene ether and alkyl glycoside according to the weight ratio of 1-2: 1, and mixing the components in a molar ratio.
9. The anti-calcification alcohol-free fountain solution as defined in claim 1, wherein: the water-based defoaming agent is any one of mineral oil water-based defoaming agents, organic silicon water-based defoaming agents and polyether water-based defoaming agents.
10. The preparation method of the calcification-preventing alcohol-free fountain solution as claimed in any one of claims 1 to 9, which is characterized by comprising the following steps:
weighing the raw materials of the components according to the formula, transferring deionized water, hydroxyethylidene diphosphonic acid, a metal chelating agent and citric acid into a dispersion kettle, sequentially putting zinc nitrate and carboxymethyl cellulose into the dispersion kettle, mechanically stirring uniformly, transferring the rest raw materials into the dispersion kettle, and mechanically stirring at the speed of 180-250 r/min for 30-40 min; after stirring and mixing are finished, the obtained mixed solution is the finished product of the calcification-preventing alcohol-free fountain solution.
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| CN114590049A (en) * | 2022-03-18 | 2022-06-07 | 安徽鑫州印刷科技有限公司 | Fountain solution for offset printing and preparation method thereof |
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| CN114590049B (en) * | 2022-03-18 | 2024-04-09 | 安徽鑫州印刷科技有限公司 | Fountain solution for offset printing and preparation method thereof |
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