CN114590049A - Fountain solution for offset printing and preparation method thereof - Google Patents
Fountain solution for offset printing and preparation method thereof Download PDFInfo
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- CN114590049A CN114590049A CN202210270362.7A CN202210270362A CN114590049A CN 114590049 A CN114590049 A CN 114590049A CN 202210270362 A CN202210270362 A CN 202210270362A CN 114590049 A CN114590049 A CN 114590049A
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- fountain solution
- offset printing
- surfactant
- monobutyl ether
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- 238000007645 offset printing Methods 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title abstract description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000004094 surface-active agent Substances 0.000 claims abstract description 25
- 239000000654 additive Substances 0.000 claims abstract description 18
- 239000002738 chelating agent Substances 0.000 claims abstract description 18
- 239000002904 solvent Substances 0.000 claims abstract description 18
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims abstract description 16
- RWNUSVWFHDHRCJ-UHFFFAOYSA-N 1-butoxypropan-2-ol Chemical compound CCCCOCC(C)O RWNUSVWFHDHRCJ-UHFFFAOYSA-N 0.000 claims abstract description 15
- KATSEJZYPZQRBH-UHFFFAOYSA-N 4,4,5-trimethylundec-2-yne Chemical group CCCCCCC(C)C(C)(C)C#CC KATSEJZYPZQRBH-UHFFFAOYSA-N 0.000 claims abstract description 14
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 14
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 14
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims abstract description 13
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical group [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims abstract description 13
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims abstract description 13
- 239000000080 wetting agent Substances 0.000 claims abstract description 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 46
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 42
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 40
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical group [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000003792 electrolyte Substances 0.000 claims description 18
- 238000005260 corrosion Methods 0.000 claims description 16
- 230000007797 corrosion Effects 0.000 claims description 16
- 239000003112 inhibitor Substances 0.000 claims description 16
- 239000003755 preservative agent Substances 0.000 claims description 16
- WPPOGHDFAVQKLN-UHFFFAOYSA-N N-Octyl-2-pyrrolidone Chemical group CCCCCCCCN1CCCC1=O WPPOGHDFAVQKLN-UHFFFAOYSA-N 0.000 claims description 15
- 235000011187 glycerol Nutrition 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 15
- 230000002335 preservative effect Effects 0.000 claims description 15
- 239000002253 acid Substances 0.000 claims description 14
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 claims description 14
- 239000004317 sodium nitrate Substances 0.000 claims description 14
- 235000010344 sodium nitrate Nutrition 0.000 claims description 14
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical group CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 claims description 13
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 13
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 13
- 239000000872 buffer Substances 0.000 claims description 13
- MGIYRDNGCNKGJU-UHFFFAOYSA-N isothiazolinone Chemical group O=C1C=CSN1 MGIYRDNGCNKGJU-UHFFFAOYSA-N 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 11
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 10
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 10
- -1 penetrant Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 6
- 239000001361 adipic acid Substances 0.000 claims description 5
- 235000011037 adipic acid Nutrition 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000001459 lithography Methods 0.000 claims 1
- 238000004945 emulsification Methods 0.000 abstract description 7
- 239000006172 buffering agent Substances 0.000 abstract description 4
- 239000002352 surface water Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 54
- 238000007639 printing Methods 0.000 description 38
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 20
- 239000000839 emulsion Substances 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 239000003906 humectant Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 235000019198 oils Nutrition 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- BDOYKFSQFYNPKF-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(carboxymethyl)amino]acetic acid;sodium Chemical compound [Na].[Na].OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O BDOYKFSQFYNPKF-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000013056 hazardous product Substances 0.000 description 1
- 238000000703 high-speed centrifugation Methods 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 235000019476 oil-water mixture Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/06—Lithographic printing
Landscapes
- Printing Plates And Materials Therefor (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention discloses a fountain solution for offset printing and a preparation method thereof, wherein the fountain solution comprises a solvent, a wetting agent, a surfactant, a buffering agent, a surfactant, a chelating agent and other additives; wherein the surfactant is tetramethyl decyne glycol polyoxyethylene ether; the solvent is prepared from ethylene glycol, ethylene glycol monobutyl ether and propylene glycol monobutyl ether; the chelating agent is disodium ethylene diamine tetraacetate. The fountain solution for offset printing can reduce the surface tension; the viscosity is improved, and the consumption of the plate surface water is reduced; the fountain solution disclosed by the invention has lower and satisfactory surface tension, and has better ink emulsification rate and better stability of emulsified ink.
Description
Technical Field
The invention relates to the technical field of chemical industry, in particular to fountain solution for offset printing and a preparation method thereof.
Background
The printing principle is as follows: offset printing utilizes the principle that 'oil' and 'water' are incompatible and immiscible, oil and water are mutually repelled, and 'water and ink balance' is realized in the printing process, so that the whole printing can be continuously and stably carried out. By "oil" or "ink" is meant printing ink and by "water" is meant fountain solution formulated with certain chemicals and water. The purpose of the fountain solution is to maintain the balance of the blank and the text portions of the plate, protecting the blank portion of the plate from being encroached on by the ink and from extending into the text portion.
The main functions of the fountain solution in offset printing are as follows: and forming a protective film on the blank part of the printing plate, and forming a uniform water film on the blank part of the printing plate to keep the ink repellency and the hydrophilicity of the blank part of the printing plate and protect the blank part of the printing plate. The hydrophilic salt layer lost in the printing process is supplemented, in the printing process, as the surface of the printing plate is rubbed, the hydrophilic layer on the printing plate is abraded, meanwhile, paper powder and paper wool are more or less dropped in the whole printing process of the paper, the abrasion is further increased, and the hydrophilic layer is damaged. In the printing process, if no electrolyte in the fountain solution continuously plays a chemical role with a hydrophilic layer of a printing plate to form a new inorganic salt hydrophilic layer, the blank part cannot be prevented from being dirty, and printing cannot be finished; the surface temperature of the printing plate is reduced, and the temperature of the ink roller and the surface ink temperature of the ink roller are increased due to high-speed running during printing, and the temperature is increased under the condition of high temperature. The viscosity of the printing ink is reduced, and the fluidity of the printing ink is increased, so that the printing ink is rapidly spread during printing, the dot expansion is easily caused, and the quality of a printed product is influenced.
The fountain solution is divided into three types, namely common fountain solution, alcohol type fountain solution and nonionic surfactant fountain solution according to different formulas. The common fountain solution consists of inorganic acid, inorganic acid salt electrolyte, hydrophilic colloid, water and other matters, and the formula is not suitable for the current printing requirement and tends to be eliminated with the continuous improvement of the printing process. The alcohol fountain solution is a relatively common fountain solution, and the structure of the machine on the offset press is also manufactured according to the characteristics of the alcohol fountain solution; among them, isopropanol is one of the current fountain solution additives. The main role of isopropanol in the printing process is to reduce surface tension and increase viscosity. However, isopropanol also has certain disadvantages: 1. isopropanol is a hazardous material and pure isopropanol has a flash point of 53F (11.7 c) and is therefore flammable and explosive. IPA substitute in the alcohol-free fountain solution has no flash point, namely, the IPA substitute cannot be combusted, so that the production safety is greatly ensured; 2. IPA has good volatility, is considered as an important pollution source in the current VOCs detection, and cannot meet the current requirement of green and environment-friendly printing; 3. the addition amount of the isopropanol is 8% -10% in the printing process, and the isopropanol is a good organic solvent, so that excessive emulsification of the ink is accelerated to a certain extent, and the printing effect is influenced finally; 4. the isopropyl alcohol used in printing belongs to petrochemical products, and the price of the isopropyl alcohol used in printing is also continuously increasing for non-renewable energy sources.
To sum up, cause the pollution easily in the current fountain solution use, it is inconvenient to prepare and use in addition, is not conform to green's requirement, still has the defect that lubricated effect is poor, awaits urgently to research and develop a novel fountain solution.
Disclosure of Invention
Therefore, the invention provides a fountain solution for offset printing and a preparation method thereof.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides a fountain solution for offset printing, which comprises a solvent, a wetting agent, a surfactant, a buffering agent, a chelating agent and other additives;
wherein the surfactant is tetramethyl decyne glycol polyoxyethylene ether;
the solvent is prepared from ethylene glycol, ethylene glycol monobutyl ether and propylene glycol monobutyl ether;
the chelating agent is disodium ethylene diamine tetraacetate.
In one embodiment of the invention, the humectant is made from glycerin and dipropylene glycol;
the buffer is prepared by mixing dibasic acid, citric acid and 25% by volume of ammonia water.
In one embodiment of the invention, the other additives are electrolytes, preservatives, corrosion inhibitors, penetrants, acetic acid and water;
the electrolyte is sodium nitrate, the preservative is isothiazolinone, the corrosion inhibitor is methylbenzotriazole, and the penetrating agent is N-octyl pyrrolidone.
In one embodiment of the invention, the fountain solution comprises the following components in percentage by mass: 12 to 13 percent of ethylene glycol, 36.5 to 37.5 percent of ethylene glycol monobutyl ether, 1.0 to 2.2 percent of propylene glycol monobutyl ether, 12.5 to 13.5 percent of glycerin, 1.5 to 2.5 percent of dipropylene glycol, 0.6 to 0.8 percent of tetramethyl decyne glycol polyoxyethylene ether, 2.6 to 3.6 percent of mixed dibasic acid, 0.2 to 0.5 percent of citric acid, 1.5 to 2.5 percent of 25 percent ammonia water, 0.1 to 0.3 percent of ethylene diamine tetraacetic acid disodium, 0.5 to 0.8 percent of sodium nitrate, 0.03 to 0.05 percent of isothiazolinone, 0.1 to 0.2 percent of methylbenzotriazole, 3.8 to 4.8 percent of N-octyl pyrrolidone, 0.1 to 0.3 percent of acetic acid and 16 to 30 percent of water.
In one embodiment of the invention, the mixed diacid is adipic acid and terephthalic acid in a molar ratio of 4-6: 1.
The invention also provides a preparation method of the fountain solution for offset printing, which is prepared by mixing the solvent, the wetting agent, the surfactant, the buffering agent, the surfactant, the chelating agent and other additives; wherein the surfactant is tetramethyl decyne glycol polyoxyethylene ether; the solvent comprises ethylene glycol, ethylene glycol monobutyl ether and propylene glycol monobutyl ether;
the chelating agent is disodium ethylene diamine tetraacetate; the wetting agent comprises glycerin and dipropylene glycol; the buffer comprises mixed dibasic acid, citric acid and ammonia water with the volume fraction of 25%;
the other additives are electrolyte, preservative, corrosion inhibitor, penetrant, acetic acid and water;
the electrolyte is sodium nitrate, the preservative is isothiazolinone, the corrosion inhibitor is methylbenzotriazole, and the penetrating agent is N-octyl pyrrolidone.
The use of the fountain solution described above in offset printing also falls within the scope of the present invention.
The invention also provides an offset printing method, wherein the fountain solution is applied to an image printing plate to reduce the non-image area of the image printing plate.
The printing medium prepared by the method also belongs to the protection scope of the invention.
The invention has the following advantages:
the fountain solution for offset printing can reduce the surface tension; the fountain solution disclosed by the invention has the advantages that the viscosity is improved, and the consumption of plate surface water is reduced; according to the fountain solution provided by the embodiment of the invention, the effective components such as the nonionic surfactant are added into the formula of the fountain solution to replace alcohol, so that the problem that the fountain solution needs alcohol is solved, and the fountain solution meets the requirements of green and environment-friendly printing.
The fountain solution disclosed by the invention has lower and satisfactory surface tension, and has better ink emulsification rate and better stability of emulsified ink.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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.
In the embodiment of the invention, the ratio of ethylene glycol, cargo number: 107-21-1; ethylene glycol monobutyl ether, cat No.: 111-76-2; propylene glycol monobutyl ether, cat No.: 29387-86-8; glycerol, cat # s: 56-81-5; dipropylene glycol, cat # s: 110-98-5; citric acid, cat No.: 77-92-9; sodium nitrate, cat # o: 7631-99-4; carbazone-methyl benzotriazole, cat #: 36-85-6; n-octyl pyrrolidone, 2687-94-7; acetic acid, good number: 4-19-7.
Example 1
Embodiments of the present invention provide a fountain solution for offset printing, which includes a solvent, a wetting agent, a surfactant, a buffer, a surfactant, a chelating agent, and other additives; wherein the surfactant is tetramethyl decyne glycol polyoxyethylene ether; the solvent is prepared from ethylene glycol, ethylene glycol monobutyl ether and propylene glycol monobutyl ether; the chelating agent is disodium ethylene diamine tetraacetate. The humectant is prepared from glycerol and dipropylene glycol; the buffer is prepared from mixed dibasic acid (prepared by mixing adipic acid and terephthalic acid according to the molar ratio of 4: 1), citric acid and 25% ammonia water by volume fraction. Other additives are electrolyte, preservative, corrosion inhibitor, penetrant, acetic acid and water; the electrolyte is sodium nitrate, the preservative is isothiazolinone, the corrosion inhibitor is methylbenzotriazole, and the penetrating agent is N-octyl pyrrolidone.
Specifically, the fountain solution comprises the following components in percentage by mass: ethylene glycol 12%, ethylene glycol monobutyl ether 36.5%, propylene glycol monobutyl ether 1.0%, glycerin 12.5%, dipropylene glycol 2.5%, tetramethyldecyne glycol polyoxyethylene ether 0.8%, mixed dibasic acid 2.6%, citric acid 0.5%, 25% ammonia water 1.5%, disodium ethylenediamine tetraacetate 0.3%, sodium nitrate 0.8%, isothiazolinone 0.05%, methylbenzotriazole 0.2%, N-octyl pyrrolidone 3.8%, acetic acid 0.3%, and water 24.65%.
Example 2
Embodiments of the present invention provide a fountain solution for offset printing, which includes a solvent, a wetting agent, a surfactant, a buffer, a surfactant, a chelating agent, and other additives; wherein the surfactant is tetramethyl decyne glycol polyoxyethylene ether; the solvent is prepared from ethylene glycol, ethylene glycol monobutyl ether and propylene glycol monobutyl ether; the chelating agent is disodium ethylene diamine tetraacetate. The humectant is prepared from glycerol and dipropylene glycol; the buffer is prepared from mixed dibasic acid (prepared by adipic acid and terephthalic acid according to the molar ratio of 6: 1), citric acid and 25% by volume of ammonia water. Other additives are electrolyte, preservative, corrosion inhibitor, penetrant, acetic acid and water; the electrolyte is sodium nitrate, the preservative is isothiazolinone, the corrosion inhibitor is methylbenzotriazole, and the penetrating agent is N-octyl pyrrolidone.
Specifically, the fountain solution comprises the following components in percentage by mass: ethylene glycol 13%, ethylene glycol monobutyl ether 37%, propylene glycol monobutyl ether 1.8%, glycerol 13%, dipropylene glycol 2%, tetramethyldecyne glycol polyoxyethylene ether 0.7%, mixed dibasic acid 3%, citric acid 0.3%, 25% ammonia water 2%, disodium ethylene diamine tetraacetate 0.2%, sodium nitrate 0.6%, isothiazolinone 0.04%, methylbenzotriazole 0.15%, N-octyl pyrrolidone 4%, acetic acid 0.2%, and water 22.01%.
Example 3
Embodiments of the present invention provide a fountain solution for offset printing, which includes a solvent, a wetting agent, a surfactant, a buffer, a surfactant, a chelating agent, and other additives; wherein the surfactant is tetramethyl decyne glycol polyoxyethylene ether; the solvent is prepared from ethylene glycol, ethylene glycol monobutyl ether and propylene glycol monobutyl ether; the chelating agent is disodium ethylene diamine tetraacetate. The humectant is prepared from glycerol and dipropylene glycol; the buffer is prepared from mixed dibasic acid (prepared from adipic acid and terephthalic acid according to the molar ratio of 5: 1), citric acid and 25% by volume of ammonia water. Other additives are electrolyte, preservative, corrosion inhibitor, penetrant, acetic acid and water; the electrolyte is sodium nitrate, the preservative is isothiazolinone, the corrosion inhibitor is methylbenzotriazole, and the penetrating agent is N-octyl pyrrolidone.
Specifically, the fountain solution comprises the following components in percentage by mass: ethylene glycol 13%, ethylene glycol monobutyl ether 37.5%, propylene glycol monobutyl ether 2.2%, glycerol 13.5%, dipropylene glycol 2.5%, tetramethyldecyne glycol polyoxyethylene ether 0.8%, mixed dibasic acid 3.6%, citric acid 0.5%, 25% ammonia water 2.5%, disodium ethylenediamine tetraacetate 0.3%, sodium nitrate 0.8%, isothiazolinone 0.05%, methylbenzotriazole 0.2%, N-octyl pyrrolidone 4.8%, acetic acid 0.3%, and water 17.75%.
The preparation method of the fountain solution for offset printing of the embodiment of the invention is prepared by mixing a solvent, a wetting agent, a surfactant, a buffering agent, a surfactant, a chelating agent and other additives; wherein the surfactant is tetramethyl decyne glycol polyoxyethylene ether; the solvent comprises ethylene glycol, ethylene glycol monobutyl ether and propylene glycol monobutyl ether; the chelating agent is disodium ethylene diamine tetraacetate; the humectant comprises glycerin and dipropylene glycol; the buffer comprises mixed dibasic acid, citric acid and ammonia water with the volume fraction of 25%; other additives are electrolyte, preservative, corrosion inhibitor, penetrant, acetic acid and water; the electrolyte is sodium nitrate, the preservative is isothiazolinone, the corrosion inhibitor is methylbenzotriazole, and the penetrating agent is N-octyl pyrrolidone.
The use of a fountain solution of the present invention in offset printing, an offset printing process, applying a fountain solution to an image plate to desensitize non-image areas of the image plate.
Test example 1
The surface tension, the ink emulsification rate and the emulsion ink stability were measured for the fountain oils of examples 1 to 3 and comparative example (polyether L640.55g, Tween-800.46 g, glycerol 45g, polyethylene glycol 18g, citric acid 15g, sodium citrate 75g, and water 1000 ml).
1. Surface tension measurement
The surface tension of the liquid in the temperature range of-5 to 110 ℃ can be measured by using an ZBY-1 full-automatic surface tension meter according to a bubble method and a production instrument of a Shanghai balance instrument factory, the measuring range is 0 to 400.0dyn/cm (1dyn/cm is 1mN/m), and the precision is 0.1 dyn/cm. The solution temperature was controlled to exactly 0.1 ℃. The measurement results are shown in table 1.
2. Measurement of ink emulsification Rate
The fountain solution prepared in the example 1 is removed by 50g of fountain solution, the fountain solution is added into 50g of ink, then the ink is stirred for 10min at the speed of 100r/min by an electromagnetic stirring device, the standing time after stirring is about 10min, after standing, a part of the fountain solution is not absorbed by the ink, the fountain solution which is not emulsified with the ink is poured out, the mass of the oil-water mixture is weighed, and the emulsion rate value C of the ink is calculated according to the mass.
3. Measurement of emulsion ink stability
And (3) stirring the emulsified ink at a speed of 1000r/min on a high-speed centrifuge, wherein the stirring time is about 20min, and water is separated from the emulsified ink through a high-speed centrifugation process, so that the index for measuring the stability of the emulsified ink can be based on the time for precipitating the aqueous solution. The shorter the time for the fountain solution to settle out, the worse the stability of the emulsion ink, while the longer the time for the fountain solution to settle out, the better the stability of the emulsion ink.
The criteria for determination in this test were: the stability with the shortest fountain solution precipitation time is A; the stability of the fountain solution in the shortest time was D, with intermediate levels B and C, respectively.
TABLE 1
| Item | Surface tension delta (mN/m) | Ink emulsification Rate (%) | Emulsion ink stability |
| Example 1 | 36.82 | 17.6 | D |
| Example 2 | 37.0 | 19.3 | C |
| Example 3 | 35.95 | 18.1 | C |
| Comparative example | 39.13 | 28.21 | B |
As can be seen from Table 1, the fountain solution of the present invention has a lower and satisfactory surface tension, and it has a better ink emulsification rate and better emulsion ink stability, compared to the comparative examples.
Actual printing application proves that the printing effect of the fountain solution is better than that of common fountain solution, and the fountain solution is applied to an image printing plate to reduce the non-image area of the image printing plate.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (9)
1. A fountain solution for offset printing, comprising a solvent, a wetting agent, a surfactant, a buffer, a chelating agent, and other additives;
wherein the surfactant is tetramethyl decyne glycol polyoxyethylene ether;
the solvent is prepared from ethylene glycol, ethylene glycol monobutyl ether and propylene glycol monobutyl ether;
the chelating agent is disodium ethylene diamine tetraacetate.
2. The fountain solution for offset printing as set forth in claim 1,
the wetting agent is made from glycerol and dipropylene glycol;
the buffer is prepared by mixing dibasic acid, citric acid and 25% by volume of ammonia water.
3. The fountain solution for offset printing as set forth in claim 2,
the other additives are electrolyte, preservative, corrosion inhibitor, penetrant, acetic acid and water;
the electrolyte is sodium nitrate, the preservative is isothiazolinone, the corrosion inhibitor is methylbenzotriazole, and the penetrating agent is N-octyl pyrrolidone.
4. The fountain solution for offset printing as set forth in claim 3,
in the fountain solution, the components are as follows in percentage by mass: 12 to 13 percent of ethylene glycol, 36.5 to 37.5 percent of ethylene glycol monobutyl ether, 1.0 to 2.2 percent of propylene glycol monobutyl ether, 12.5 to 13.5 percent of glycerol, 1.5 to 2.5 percent of dipropylene glycol, 0.6 to 0.8 percent of tetramethyl decyne glycol polyoxyethylene ether, 2.6 to 3.6 percent of mixed dibasic acid, 0.2 to 0.5 percent of citric acid, 1.5 to 2.5 percent of 25 percent of ammonia water, 0.1 to 0.3 percent of disodium ethylene diamine tetraacetate, 0.5 to 0.8 percent of sodium nitrate, 0.03 to 0.05 percent of isothiazolinone, 0.1 to 0.2 percent of methyl benzotriazole, 3.8 to 4.8 percent of N-octyl pyrrolidone, 0.1 to 0.3 percent of acetic acid and 16 to 30 percent of water.
5. The fountain solution for offset printing as set forth in claim 3,
the mixed dibasic acid is prepared from adipic acid and terephthalic acid according to a molar ratio of 4-6: 1.
6. A method for producing a fountain solution for offset printing, which is produced by mixing the solvent, wetting agent, surfactant, buffer, surfactant, chelating agent, and other additives described in any one of claims 1 to 5; wherein the surfactant is tetramethyl decyne glycol polyoxyethylene ether; the solvent comprises ethylene glycol, ethylene glycol monobutyl ether and propylene glycol monobutyl ether;
the chelating agent is disodium ethylene diamine tetraacetate; the wetting agent comprises glycerin and dipropylene glycol; the buffer comprises mixed dibasic acid, citric acid and ammonia water with the volume fraction of 25%;
the other additives are electrolyte, preservative, corrosion inhibitor, penetrant, acetic acid and water;
the electrolyte is sodium nitrate, the preservative is isothiazolinone, the corrosion inhibitor is methylbenzotriazole, and the penetrating agent is N-octyl pyrrolidone.
7. Use of the fountain solution of any one of claims 1-5 in offset lithography.
8. Offset printing process applying the fountain solution of any one of claims 1-5 to an image plate to desensitize non-image areas of the image plate.
9. A print medium prepared by the method of claim 8.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7454114B1 (en) | 2023-09-22 | 2024-03-21 | サカタインクス株式会社 | Concentrated dampening solution composition, dampening solution composition, method for producing printed matter using the same, and printed matter |
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| CN113334958A (en) * | 2021-07-09 | 2021-09-03 | 深圳市裕同包装科技股份有限公司 | Alcohol-free printing fountain solution and preparation method thereof |
| CN113459697A (en) * | 2021-08-10 | 2021-10-01 | 中山市富日印刷材料有限公司 | Anti-calcification alcohol-free fountain solution and preparation method thereof |
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| WO2012055870A1 (en) * | 2010-10-28 | 2012-05-03 | Basf Se | Fountain solution and fountain solution concentrates |
| 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 |
| CN104943434A (en) * | 2015-07-11 | 2015-09-30 | 倪娉娉 | Non-ionic surfactant fountain solution |
| CN109177566A (en) * | 2018-09-17 | 2019-01-11 | 苏州市万丽珑新材料科技有限公司 | One kind exempting from alcohol fountain solution and preparation method thereof |
| CN113334958A (en) * | 2021-07-09 | 2021-09-03 | 深圳市裕同包装科技股份有限公司 | Alcohol-free printing fountain solution and preparation method thereof |
| CN113459697A (en) * | 2021-08-10 | 2021-10-01 | 中山市富日印刷材料有限公司 | Anti-calcification alcohol-free fountain solution and preparation method thereof |
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| JP7454114B1 (en) | 2023-09-22 | 2024-03-21 | サカタインクス株式会社 | Concentrated dampening solution composition, dampening solution composition, method for producing printed matter using the same, and printed matter |
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| CN114590049B (en) | 2024-04-09 |
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