CN113524938A - Alcohol-free fountain solution special for metal printing and preparation method thereof - Google Patents
Alcohol-free fountain solution special for metal printing and preparation method thereof Download PDFInfo
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- CN113524938A CN113524938A CN202110915506.5A CN202110915506A CN113524938A CN 113524938 A CN113524938 A CN 113524938A CN 202110915506 A CN202110915506 A CN 202110915506A CN 113524938 A CN113524938 A CN 113524938A
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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 alcohol-free fountain solution special for metal printing and a preparation method thereof; the fountain solution comprises the following components in parts by weight: 8-12 parts of citric acid, 1.8-4.2 parts of Arabic gum, 4-8 parts of disodium hydrogen phosphate, 0.5-1 part of magnesium nitrate, 0.2-0.4 part of potassium sorbate, 1.5-2.5 parts of coconut oil acyl monoethanolamine, 2-3.2 parts of high-efficiency surface active substances, 1.2-2.0 parts of colloid protective agent, 0.4-0.8 part of metal corrosion inhibitor, 0.8-1.6 parts of tetrasodium ethylene diamine tetraacetate, 2-3.2 parts of antibacterial agent, 20-30 parts of glycerol and 70-80 parts of deionized water; the fountain solution prepared by the method not only has the advantages of strong fountain capability, good antibacterial effect, low conductivity, no damage to the plate, no contamination during machine halt, and difficult emulsification of the ink after use, thereby effectively ensuring the quality and quality of the fountain solution; in addition, the product does not contain toxic alcohol solvent, is safe and environment-friendly, and cannot cause damage to human bodies after long-term use.
Description
Technical Field
The invention relates to the technical field of fountain solution preparation, in particular to alcohol-free fountain solution special for metal printing and a preparation method thereof.
Background
The tin printing is to print patterns on tinplate (tin-plated thin plate). It mainly uses the physical property of water and ink repellent, and uses printing pressure to transfer the picture and text of printing plate onto tinplate by means of rubber blanket, belonging to the principle of offset printing. The tinplate has special physical and chemical properties and the reprocessing performance of printed matters, so the printing process flow is greatly different from that of the common offset printing.
In the iron-printing process, a fountain solution is usually required, and the fountain solution is an indispensable chemical auxiliary agent in the printing of a color press and forms a uniform water film on blank parts of a printing plate to resist the ink on pictures and texts from infiltrating into the blank parts and prevent the plate from being dirty.
Currently, the commercially available fountain solution can play a certain role in wetting and preventing plate contamination. However, the following disadvantages still exist and need to be improved:
1. most of the products contain alcohol components such as isopropyl alcohol and the like. The presence of alcohol not only can lead to the possibility of fire, but also can cause certain harm to the health of workers after long-term use. Meanwhile, the environment is polluted to a certain extent when the waste water is discharged, and the environment is not protected.
2. Due to the relatively poor antibacterial performance of the microorganism, microorganisms are easy to breed and multiply on the surface of the microorganism, and the service life of the microorganism is influenced.
3. The dampening effect of the printing plate is relatively insufficient, so that the printing effect is influenced to a certain extent, and the printing efficiency is also influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the alcohol-free fountain solution special for iron printing and the preparation method thereof, the fountain solution prepared by the invention not only has the advantages of strong fountain capability, low conductivity, no damage to the plate, no dirty plate during machine halt, and difficult emulsification of the used printing ink, thereby effectively ensuring the quality and quality of the fountain solution; moreover, the antibacterial effect of the antibacterial agent is relatively good, the breeding of microorganisms can be inhibited to a certain extent, and the service life of the antibacterial agent is prolonged; in addition, the product does not contain toxic alcohol solvent, is safe and environment-friendly, and cannot cause damage to human bodies after long-term use.
In order to achieve the purpose, the invention provides the following technical scheme:
the alcohol-free fountain solution special for metal printing comprises the following components in parts by weight: 8-12 parts of citric acid, 1.8-4.2 parts of Arabic gum, 4-8 parts of disodium hydrogen phosphate, 0.5-1 part of magnesium nitrate, 0.2-0.4 part of potassium sorbate, 1.5-2.5 parts of coconut oil acyl monoethanolamine, 2-3.2 parts of high-efficiency surface active substances, 1.2-2.0 parts of colloid protective agent, 0.4-0.8 part of metal corrosion inhibitor, 0.8-1.6 parts of tetrasodium ethylene diamine tetraacetate, 2-3.2 parts of antibacterial agent, 20-30 parts of glycerol and 70-80 parts of deionized water.
Furthermore, the preparation method of the high-efficiency surface active substance comprises the following steps:
according to the following steps: 2-5, respectively weighing a proper amount of hydroxyl-terminated hyperbranched polyester and gamma-linoleic acid in a molar ratio, putting the hydroxyl-terminated hyperbranched polyester and the gamma-linoleic acid into reaction equipment, and carrying out heat preservation reaction for 2-4 hours under the conditions that the temperature is 100-120 ℃ and the vacuum degree is-0.1-0.06 MPa; after the reaction is finished, putting the obtained product into a reaction kettle together with sodium sulfite and a proper amount of nitrate, wherein the molar weight of the sodium sulfite is 4-7 times that of the hydroxyl-terminated hyperbranched polyester, respectively, uniformly mixing and stirring, raising the temperature of the obtained mixture to a reflux state, slowly adding a proper amount of modification liquid into the mixture, and then, rapidly and mechanically stirring and reacting for 8-12 hours at the temperature of 90-110 ℃; and purifying the obtained high-efficiency surface active substance crude product to obtain a high-purity high-efficiency surface active substance finished product.
Furthermore, the nitrate is selected from any one of potassium nitrate or sodium nitrate, and the using amount of the nitrate is 3-5 times of the molar amount of the hydroxyl-terminated hyperbranched polyester.
Furthermore, the modifying solution is a sodium bisulfite solution with the weight percent of 20-30%, and the dosage of the sodium bisulfite is 8-12 times of the molar weight of the hydroxyl-terminated hyperbranched polyester.
Furthermore, the purification method of the high-efficiency surface active substance crude product comprises the following steps: and (3) removing impurities in the crude product of the high-efficiency surface active substance through anion exchange column chromatography, adjusting the pH of the obtained effluent to be neutral by using a proper amount of hydrochloric acid with the concentration of 0.1-0.15 mol/L, then adding absolute ethyl alcohol, and filtering and vacuumizing to remove the absolute ethyl alcohol to obtain a solid substance, namely the finished product of the high-efficiency surface active substance after purification treatment.
Furthermore, the preparation method of the colloid protective agent comprises the following steps:
adjusting the pH value of the mixed solution to 3.0-3.6 by using a proper amount of acid liquor, then adding isothiazolinone with the mass of 2.5-4.2% of ethanol water solution into the mixed solution, and then uniformly mixing the isothiazolinone and the ethanol water solution by ultrasonic; then, at the temperature of 30-75 ℃, slowly dropwise adding tetramethoxysilane with the volume of 0.1-0.25 time that of the ethanol water solution into the obtained mixed component while stirring; after the dropwise addition is finished, the obtained mixture is stirred for 3-5 hours at the temperature of 30-75 ℃, then is subjected to gel treatment for 28-32 days at the temperature of 10-25 ℃, and finally the obtained colloidal substance is a finished product of the colloid protective agent.
Furthermore, the concentration of the mixed solution is 50-75%; and when the pH value is adjusted, the acid solution is 0.1-0.15 mol/L hydrochloric acid solution.
Furthermore, the metal corrosion inhibitor is any one of benzotriazole, sodium benzoate and triethanolamine.
Furthermore, the antibacterial agent is any one of dodecyl dimethyl benzyl ammonium chloride and tetradecyl dimethyl benzyl ammonium chloride.
A preparation method of alcohol-free fountain solution special for metal printing comprises the following steps:
s1, weighing the raw materials according to the formula in claim 1; then putting citric acid, disodium hydrogen phosphate and tetrasodium ethylene diamine tetraacetate into a reaction kettle, putting deionized water into the kettle, and fully dissolving the substances through mechanical stirring;
s2, adjusting the temperature in the reaction kettle to 50-60 ℃, adding the arabic gum and the colloid protective agent into the reaction kettle at the temperature, and continuously stirring the mixed liquid in the kettle at the speed of 200-300 r/min;
and S3, after the materials are uniformly dissolved and dispersed, naturally cooling the materials to room temperature, adding the rest raw materials into the materials, and mechanically stirring the materials to uniformly mix the materials to obtain the finished product of the alcohol-free fountain solution special for metal printing.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
1. the invention takes the gamma-linoleic acid, the hydroxyl-terminated hyperbranched polyester, the sodium bisulfite and the like as the raw materials for preparing the high-efficiency surfactant, and the raw materials promote the chemical reaction among the gamma-linoleic acid, the hydroxyl-terminated hyperbranched polyester and the sodium bisulfite under the action of nitrate, so that the three-dimensional space structure of the prepared high-efficiency surfactant is greatly expanded, and the prepared high-efficiency surfactant has higher interfacial activity and lower critical micelle concentration. The ink is used as a raw material of the fountain solution, so that the prepared fountain solution has strong fountain capability, good wetting property and stability, and the ink is not easy to emulsify after being used, thereby ensuring the printing quality.
2. In the invention, tetramethoxysilane is used as a raw material, and is hydrolyzed to generate silica sol under the action of an acid solution and an ethanol water solution containing isothiazolinone, and simultaneously, the isothiazolinone remained in the silica sol system is effectively fixed. The prepared colloid protective agent has a certain antibacterial capacity, and can play a better antibacterial role by cooperating with potassium sorbate and an antibacterial agent, so that the breeding of bacteria on a fountain solution is effectively reduced. Moreover, the metal corrosion inhibitor and the ethylenediaminetetraacetic acid tetrasodium salt are used as raw materials of the fountain solution, a hydrophilic protective film can be formed on the surface of the metal plate surface, the metal corrosion inhibitor and the ethylenediaminetetraacetic acid tetrasodium salt can further play a certain protection role on the metal plate surface, and the metal plate surface can be further protected from being corroded due to the mutual cooperation of the metal corrosion inhibitor and the ethylenediaminetetraacetic acid tetrasodium salt, so that the ink transfer is not influenced, the printing endurance of a printing plate is improved, and the printing quality is also improved.
3. The fountain solution provided by the invention does not contain toxic alcohol solvent, is safe and environment-friendly, does not cause damage to the environment and human bodies, and has good fountain solution performance and strong stability. In addition, the method also has the advantages of low conductivity, no damage to the plate and no contamination during shutdown, and effectively ensures the quality of the fountain solution.
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
An alcohol-free fountain solution special for metal printing, which comprises the following components in parts by weight: 8 parts of citric acid, 1.8 parts of Arabic gum, 4 parts of disodium hydrogen phosphate, 0.5 part of magnesium nitrate, 0.2 part of potassium sorbate, 1.5 parts of cocoyl monoethanolamine, 2 parts of a high-efficiency surface active substance, 1.2 parts of a colloid protective agent, 0.4 part of benzotriazole, 0.8 part of tetrasodium ethylenediamine tetraacetate, 2 parts of dodecyl dimethyl benzyl ammonium chloride, 20 parts of glycerol and 7 parts of deionized water.
The preparation method of the high-efficiency surface active substance comprises the following steps:
according to the following steps: 2, respectively weighing a proper amount of hydroxyl-terminated hyperbranched polyester and gamma-linoleic acid in a molar ratio, putting the hydroxyl-terminated hyperbranched polyester and the gamma-linoleic acid into reaction equipment, and carrying out heat preservation reaction for 2 hours under the conditions that the temperature is 100 ℃ and the vacuum degree is-0.1 MPa; after the reaction is finished, putting the obtained product into a reaction kettle together with sodium sulfite and a proper amount of nitrate, wherein the molar weight of the sodium sulfite is 4 times that of the hydroxyl-terminated hyperbranched polyester, respectively, uniformly mixing and stirring, raising the temperature of the obtained mixture to a reflux state, slowly adding a proper amount of modification liquid into the mixture, and then quickly and mechanically stirring and reacting for 8 hours at the temperature of 90 ℃; and purifying the obtained high-efficiency surface active substance crude product to obtain a high-purity high-efficiency surface active substance finished product.
The nitrate is potassium nitrate, and the dosage of the nitrate is 3 times of the molar weight of the hydroxyl-terminated hyperbranched polyester.
The modifying solution is 20wt% sodium bisulfite solution, and the dosage of the sodium bisulfite is 8 times of the molar weight of the hydroxyl-terminated hyperbranched polyester.
The purification method of the high-efficiency surface active substance crude product comprises the following steps: and (3) removing impurities in the crude product of the high-efficiency surface active substance through anion exchange column chromatography, adjusting the pH of the obtained effluent to be neutral by using a proper amount of hydrochloric acid with the concentration of 0.1mol/L, then adding absolute ethyl alcohol, filtering and vacuumizing to remove the absolute ethyl alcohol, and obtaining a solid substance, namely the finished product of the high-efficiency surface active substance after purification treatment.
The preparation method of the colloid protective agent comprises the following steps: adjusting the pH value of the mixed solution to 3.0 by using a proper amount of acid liquor, then adding isothiazolinone with the mass of 2.5% of ethanol water solution into the mixed solution, and then uniformly mixing the isothiazolinone and the ethanol water solution by ultrasonic; then at the temperature of 30 ℃, slowly dropwise adding tetramethoxysilane with the volume of 0.1 time of that of the ethanol water solution into the obtained mixed component while stirring; after the dropwise addition is finished, the obtained mixture is kept at the temperature of 30 ℃ and stirred for 3h, then the mixture is subjected to gel treatment at the temperature of 10 ℃ for 28 days, and finally the obtained colloidal substance is the finished product of the colloidal protective agent.
The concentration of the mixed solution is 50%; and when the pH value is adjusted, the acid solution is 0.1mol/L hydrochloric acid solution.
A preparation method of alcohol-free fountain solution special for metal printing comprises the following steps:
s1, weighing the raw materials according to the formula in claim 1; then putting citric acid, disodium hydrogen phosphate and tetrasodium ethylene diamine tetraacetate into a reaction kettle, putting deionized water into the kettle, and fully dissolving the substances through mechanical stirring;
s2, adjusting the temperature in the reaction kettle to 50 ℃, adding the arabic gum and the colloid protective agent into the reaction kettle at the temperature, and continuously stirring the mixed liquid in the kettle at the speed of 200 r/min;
and S3, after the materials are uniformly dissolved and dispersed, naturally cooling the materials to room temperature, adding the rest raw materials into the materials, and mechanically stirring the materials to uniformly mix the materials to obtain the finished product of the alcohol-free fountain solution special for metal printing.
Example 2
The alcohol-free fountain solution special for metal printing provided by the embodiment is substantially the same as that in the embodiment 1, and the main differences are as follows:
an alcohol-free fountain solution special for metal printing, which comprises the following components in parts by weight: 10 parts of citric acid, 2.8 parts of Arabic gum, 6 parts of disodium hydrogen phosphate, 0.8 part of magnesium nitrate, 0.3 part of potassium sorbate, 2.0 parts of coconut monoethanol amine, 2.5 parts of high-efficiency surface active substances, 1.6 parts of colloid protective agent, 0.6 part of triethanolamine, 1.2 parts of tetrasodium ethylene diamine tetraacetate, 2.5 parts of tetradecyl dimethyl benzyl ammonium chloride, 25 parts of glycerol and 75 parts of deionized water.
The preparation method of the high-efficiency surface active substance comprises the following steps:
according to the following steps: 3, respectively weighing a proper amount of hydroxyl-terminated hyperbranched polyester and gamma-linoleic acid according to the molar ratio, putting the hydroxyl-terminated hyperbranched polyester and the gamma-linoleic acid into reaction equipment, and carrying out heat preservation reaction for 3 hours under the conditions that the temperature is 110 ℃ and the vacuum degree is-0.08 MPa; after the reaction is finished, putting the obtained product into a reaction kettle together with sodium sulfite and a proper amount of nitrate, wherein the molar weight of the sodium sulfite is 5 times of that of the hydroxyl-terminated hyperbranched polyester, respectively, uniformly mixing and stirring, raising the temperature of the obtained mixture to a reflux state, slowly adding a proper amount of modification liquid into the mixture, and then quickly and mechanically stirring and reacting for 10 hours at the temperature of 100 ℃; and purifying the obtained high-efficiency surface active substance crude product to obtain a high-purity high-efficiency surface active substance finished product.
The nitrate is sodium nitrate, and the dosage of the nitrate is 4 times of the molar weight of the hydroxyl-terminated hyperbranched polyester.
The modifying solution is 25wt% sodium bisulfite solution, and the dosage of the sodium bisulfite is 10 times of the molar weight of the hydroxyl-terminated hyperbranched polyester.
The purification method of the high-efficiency surface active substance crude product comprises the following steps: and (3) removing impurities in the crude product of the high-efficiency surface active substance by anion exchange column chromatography, adjusting the pH of the obtained effluent to be neutral by using a proper amount of hydrochloric acid with the concentration of 0.12mol/L, then adding absolute ethyl alcohol, filtering and vacuumizing to remove the absolute ethyl alcohol, and obtaining a solid substance, namely the finished product of the high-efficiency surface active substance after purification treatment.
The preparation method of the colloid protective agent comprises the following steps: adjusting the pH value of the mixed solution to 3.2 by using a proper amount of acid liquor, then adding isothiazolinone with the mass of 3.6% of ethanol water solution into the mixed solution, and then uniformly mixing the isothiazolinone and the ethanol water solution by ultrasonic; then at the temperature of 50 ℃, slowly dropwise adding tetramethoxysilane with the volume of 0.2 times that of the ethanol water solution into the obtained mixed component while stirring; after the dropwise addition is finished, the obtained mixture is kept at the temperature of 50 ℃ and stirred for 4h, and then is subjected to gel treatment at the temperature of 20 ℃ for 30 days, and finally the obtained colloidal substance is the finished product of the colloidal protective agent.
The concentration of the mixed solution is 65%; and when the pH value is adjusted, the acid solution is 0.12mol/L hydrochloric acid solution.
Example 3
The alcohol-free fountain solution special for metal printing provided by the embodiment is substantially the same as that in the embodiment 1, and the main differences are as follows:
an alcohol-free fountain solution special for metal printing, which comprises the following components in parts by weight: 12 parts of citric acid, 4.2 parts of Arabic gum, 8 parts of disodium hydrogen phosphate, 1 part of magnesium nitrate, 0.4 part of potassium sorbate, 2.5 parts of coconut monoethanol amine, 3.2 parts of high-efficiency surface active substances, 2.0 parts of colloid protective agent, 0.8 part of triethanolamine, 1.6 parts of tetrasodium ethylene diamine tetraacetate, 3.2 parts of dodecyl dimethyl benzyl ammonium chloride, 30 parts of glycerol and 80 parts of deionized water.
The preparation method of the high-efficiency surface active substance comprises the following steps: according to the following steps: 5, respectively weighing a proper amount of hydroxyl-terminated hyperbranched polyester and gamma-linoleic acid according to the molar ratio, putting the hydroxyl-terminated hyperbranched polyester and the gamma-linoleic acid into reaction equipment, and carrying out heat preservation reaction for 4 hours under the conditions that the temperature is 120 ℃ and the vacuum degree is-0.06 MPa; after the reaction is finished, putting the obtained product into a reaction kettle together with sodium sulfite and a proper amount of nitrate, wherein the molar weight of the sodium sulfite is 7 times that of the hydroxyl-terminated hyperbranched polyester, respectively, uniformly mixing and stirring, raising the temperature of the obtained mixture to a reflux state, slowly adding a proper amount of modification liquid into the mixture, and then quickly and mechanically stirring and reacting for 12 hours at the temperature of 110 ℃; and purifying the obtained high-efficiency surface active substance crude product to obtain a high-purity high-efficiency surface active substance finished product.
The nitrate is potassium nitrate, and the dosage of the nitrate is 5 times of the molar weight of the hydroxyl-terminated hyperbranched polyester.
The modifying solution is 30wt% sodium bisulfite solution, and the dosage of the sodium bisulfite is 12 times of the molar weight of the hydroxyl-terminated hyperbranched polyester.
The purification method of the high-efficiency surface active substance crude product comprises the following steps: and (3) removing impurities in the crude product of the high-efficiency surface active substance by anion exchange column chromatography, adjusting the pH of the obtained effluent to be neutral by using a proper amount of hydrochloric acid with the concentration of 0.15mol/L, then adding absolute ethyl alcohol, filtering and vacuumizing to remove the absolute ethyl alcohol, and obtaining a solid substance, namely the finished product of the high-efficiency surface active substance after purification treatment.
The preparation method of the colloid protective agent comprises the following steps: adjusting the pH value of the mixed solution to 3.6 by using a proper amount of acid liquor, then adding isothiazolinone with the mass of 4.2% of ethanol water solution into the mixed solution, and then uniformly mixing the isothiazolinone and the ethanol water solution by ultrasonic; then at the temperature of 75 ℃, slowly dropwise adding tetramethoxysilane with the volume of 0.25 time of that of the ethanol water solution into the obtained mixed component while stirring; after the dropwise addition is finished, the obtained mixture is kept at the temperature of 75 ℃ and stirred for 5 hours, then the mixture is subjected to gel treatment at the temperature of 25 ℃ for 2 days, and finally the obtained colloidal substance is the finished product of the colloidal protective agent.
The concentration of the mixed solution is 75%; and when the pH value is adjusted, the acid solution is 0.15mol/L hydrochloric acid solution.
Comparative example 1
The alcohol-free fountain solution special for metal printing and the preparation method thereof provided by the embodiment are substantially the same as those of the embodiment 1, and the main differences are as follows: the high-efficiency surface active substance in the raw material is replaced by the same amount of cocoyl monoethanolamine;
comparative example 2
The alcohol-free fountain solution special for metal printing and the preparation method thereof provided by the embodiment are substantially the same as those of the embodiment 1, and the main differences are as follows: the raw materials of the material do not use a colloid protective agent;
performance testing
The fountain solutions prepared in the same amount in examples 1 to 3 and comparative examples 1 to 2 were used to test the relevant performance of each group of fountain solutions, and the obtained data are recorded in the following table:
by comparing and analyzing the relevant data in the tables, the fountain solution prepared by the method not only has the advantages of strong fountain capability, low conductivity, no damage to the plate, no dirty plate during shutdown, and difficult emulsification of the used ink, thereby effectively ensuring the quality and quality of the fountain solution; moreover, the antibacterial effect of the antibacterial agent is relatively good, the breeding of microorganisms can be inhibited to a certain extent, and the service life of the antibacterial agent is prolonged; in addition, the product does not contain toxic alcohol solvent, is safe and environment-friendly, and cannot cause damage to human bodies after long-term use. 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 alcohol-free fountain solution special for metal printing is characterized by comprising the following components in parts by weight: 8-12 parts of citric acid, 1.8-4.2 parts of Arabic gum, 4-8 parts of disodium hydrogen phosphate, 0.5-1 part of magnesium nitrate, 0.2-0.4 part of potassium sorbate, 1.5-2.5 parts of coconut oil acyl monoethanolamine, 2-3.2 parts of high-efficiency surface active substances, 1.2-2.0 parts of colloid protective agent, 0.4-0.8 part of metal corrosion inhibitor, 0.8-1.6 parts of tetrasodium ethylene diamine tetraacetate, 2-3.2 parts of antibacterial agent, 20-30 parts of glycerol and 70-80 parts of deionized water.
2. The alcohol-free fountain solution special for metal printing according to claim 1, wherein the preparation method of the high-efficiency surface active substance comprises the following steps:
according to the following steps: 2-5, respectively weighing a proper amount of hydroxyl-terminated hyperbranched polyester and gamma-linoleic acid in a molar ratio, putting the hydroxyl-terminated hyperbranched polyester and the gamma-linoleic acid into reaction equipment, and carrying out heat preservation reaction for 2-4 hours under the conditions that the temperature is 100-120 ℃ and the vacuum degree is-0.1-0.06 MPa; after the reaction is finished, putting the obtained product into a reaction kettle together with sodium sulfite and a proper amount of nitrate, wherein the molar weight of the sodium sulfite is 4-7 times that of the hydroxyl-terminated hyperbranched polyester, respectively, uniformly mixing and stirring, raising the temperature of the obtained mixture to a reflux state, slowly adding a proper amount of modification liquid into the mixture, and then, rapidly and mechanically stirring and reacting for 8-12 hours at the temperature of 90-110 ℃; and purifying the obtained high-efficiency surface active substance crude product to obtain a high-purity high-efficiency surface active substance finished product.
3. The alcohol-free fountain solution special for metal printing according to claim 2, wherein: the nitrate is selected from any one of potassium nitrate or sodium nitrate, and the using amount of the nitrate is 3-5 times of the molar amount of the hydroxyl-terminated hyperbranched polyester.
4. The alcohol-free fountain solution special for metal printing according to claim 2, wherein: the modified solution is 20-30 wt% of sodium bisulfite solution, and the use amount of the sodium bisulfite is 8-12 times of the molar weight of the hydroxyl-terminated hyperbranched polyester.
5. The alcohol-free fountain solution special for metal printing according to claim 2, wherein the method for purifying the high-efficiency crude product of the surface active substance comprises the following steps: and (3) removing impurities in the crude product of the high-efficiency surface active substance through anion exchange column chromatography, adjusting the pH of the obtained effluent to be neutral by using a proper amount of hydrochloric acid with the concentration of 0.1-0.15 mol/L, then adding absolute ethyl alcohol, and filtering and vacuumizing to remove the absolute ethyl alcohol to obtain a solid substance, namely the finished product of the high-efficiency surface active substance after purification treatment.
6. The alcohol-free fountain solution special for iron printing according to claim 1, wherein the preparation method of the colloid protective agent comprises the following steps:
adjusting the pH value of the mixed solution to 3.0-3.6 by using a proper amount of acid liquor, then adding isothiazolinone with the mass of 2.5-4.2% of ethanol water solution into the mixed solution, and then uniformly mixing the isothiazolinone and the ethanol water solution by ultrasonic; then, at the temperature of 30-75 ℃, slowly dropwise adding tetramethoxysilane with the volume of 0.1-0.25 time that of the ethanol water solution into the obtained mixed component while stirring; after the dropwise addition is finished, the obtained mixture is stirred for 3-5 hours at the temperature of 30-75 ℃, then is subjected to gel treatment for 28-32 days at the temperature of 10-25 ℃, and finally the obtained colloidal substance is a finished product of the colloid protective agent.
7. The alcohol-free fountain solution special for metal printing according to claim 6, wherein: the concentration of the mixed solution is 50-75%; and when the pH value is adjusted, the acid solution is 0.1-0.15 mol/L hydrochloric acid solution.
8. The alcohol-free fountain solution special for metal printing according to claim 1, wherein: the metal corrosion inhibitor is any one of benzotriazole, sodium benzoate and triethanolamine.
9. The alcohol-free fountain solution special for metal printing according to claim 1, wherein: the antibacterial agent is any one of dodecyl dimethyl benzyl ammonium chloride and tetradecyl dimethyl benzyl ammonium chloride.
10. The preparation method of the alcohol-free fountain solution special for metal printing according to any one of claims 1 to 9, characterized by comprising the following steps:
s1, weighing the raw materials according to the formula in claim 1; then putting citric acid, disodium hydrogen phosphate and tetrasodium ethylene diamine tetraacetate into a reaction kettle, putting deionized water into the kettle, and fully dissolving the substances through mechanical stirring;
s2, adjusting the temperature in the reaction kettle to 50-60 ℃, adding the arabic gum and the colloid protective agent into the reaction kettle at the temperature, and continuously stirring the mixed liquid in the kettle at the speed of 200-300 r/min;
and S3, after the materials are uniformly dissolved and dispersed, naturally cooling the materials to room temperature, adding the rest raw materials into the materials, and mechanically stirring the materials to uniformly mix the materials to obtain the finished product of the alcohol-free fountain solution special for metal printing.
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| CN103935150A (en) * | 2014-05-12 | 2014-07-23 | 苏州禾川化学技术服务有限公司 | Alcohol-free fountain solution with high viscosity and low surface tension |
| CN104260576A (en) * | 2014-09-15 | 2015-01-07 | 合肥环照高分子材料厂 | Alcohol-free fountain solution and preparation method thereof |
| WO2021130289A1 (en) * | 2019-12-27 | 2021-07-01 | Aerogel Aps | Use of biocidal aerogel compositions in on-shore paints, coatings and sealants |
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2021
- 2021-08-10 CN CN202110915506.5A patent/CN113524938B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353421A (en) * | 2008-09-17 | 2009-01-28 | 武汉工程大学 | Polyester type hyperbranched polymer pigment dispersant and preparation thereof |
| CN103935150A (en) * | 2014-05-12 | 2014-07-23 | 苏州禾川化学技术服务有限公司 | Alcohol-free fountain solution with high viscosity and low surface tension |
| CN104260576A (en) * | 2014-09-15 | 2015-01-07 | 合肥环照高分子材料厂 | Alcohol-free fountain solution and preparation method thereof |
| WO2021130289A1 (en) * | 2019-12-27 | 2021-07-01 | Aerogel Aps | Use of biocidal aerogel compositions in on-shore paints, coatings and sealants |
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