CN114773910A - Offset printing ink with high anti-emulsifying property and preparation method thereof - Google Patents

Offset printing ink with high anti-emulsifying property and preparation method thereof Download PDF

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CN114773910A
CN114773910A CN202210439025.6A CN202210439025A CN114773910A CN 114773910 A CN114773910 A CN 114773910A CN 202210439025 A CN202210439025 A CN 202210439025A CN 114773910 A CN114773910 A CN 114773910A
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agent
oil
ink
alkyd resin
offset printing
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CN114773910B (en
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闫继芳
徐天平
杨晓
王银磊
高建
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Beijing Jinyinlian International Supply Chain Management Co ltd
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Beijing Jinyinlian International Supply Chain Management Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/10—Printing inks based on artificial resins
    • C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
    • C09D11/104—Polyesters
    • C09D11/105—Alkyd resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
    • C09D11/033—Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
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  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

The application relates to the technical field of offset printing ink, and particularly discloses offset printing ink with high anti-emulsifying property and a preparation method thereof, wherein the raw materials of the offset printing ink comprise pigment, medium oil alkyd resin, filler, a dispersing wetting agent, a leveling agent, an abrasion-resistant agent, an anti-emulsifying agent, a drying agent, an antioxidant and solvent oil; the formula is scientific, the proportion is strict, and the offset printing ink prepared by controlling the selection of the raw materials has excellent stability, solvent release property and printability. The application also provides a preparation method of the offset printing ink with high anti-emulsifying property, which comprises the steps of taking part of the alkyd resin and solvent oil, adding pigment, stirring to obtain slurry, adding the filler, the wear-resisting agent, the dispersing wetting agent, the leveling agent and the anti-emulsifying agent into the slurry, grinding after pre-dispersion, finally adding the rest raw materials, uniformly dispersing, filtering and canning to obtain the offset printing ink; the method is simple, and the obtained offset ink has excellent anti-emulsifying property and can effectively reduce the generation frequency of the ink piling problem in the offset printing process.

Description

Offset printing ink with high anti-emulsifying property and preparation method thereof
Technical Field
The application relates to the technical field of offset printing ink, in particular to offset printing ink with high anti-emulsification performance and a preparation method thereof.
Background
The ink, which is the most important printing material for information reproduction, should have good printability during printing. The offset ink is mainly composed of colored pigment (dye, etc.), binder, filler and assistant, and is prepared by mixing and stirring according to a certain proportion and printing requirements, and rolling. In recent years, with the development of the Chinese printing industry, the development pace of the domestic ink industry is increasingly accelerated, and the quality requirements on printed matters and ink are higher and higher.
The ink emulsification is that under the rolling pressure of printing pressure, the ink and the fountain solution are dispersed into fine particles, and the fine particles are dissolved and mixed into emulsion according to a certain proportion and kept relatively stable so as to ensure that the plate surface can obtain enough emulsion ink. Offset ink contact with fountain solution during offset printing increases ink fluidity and transferability, but excessive water absorption causes excessive emulsification of the ink. The hydrophilicity of the ink is a direct cause of excessive emulsification of the ink, and pigments, resins and fillers in the ink have good hydrophilicity, particularly the red pigment has strong hydrophilicity, so that phenomena such as ink piling in printing and the like are easy to occur frequently.
The excessive emulsification of the ink can cause the problems of volume increase, color fade, viscosity reduction, saturation reduction, affinity reduction, adhesive force reduction and the like of the ink, thereby causing printing phenomena such as ink piling and the like of a rubber blanket; and once the ink is excessively emulsified, only new ink can be replaced for use, so that the ink is extremely easy to waste.
Disclosure of Invention
In order to effectively avoid the problem of excessive emulsification of offset ink in the offset printing process, the application provides the offset ink with high anti-emulsification performance and the preparation method thereof.
In a first aspect, the application provides a high anti-emulsification offset ink, which adopts the following technical scheme:
the offset printing ink with high anti-emulsification performance comprises the following raw materials in percentage by weight: 18-22% of pigment, 4-8% of medium oil alkyd resin, 3-7% of filler, 0.8-1.5% of dispersing and wetting agent, 0.8-1.5% of flatting agent, 0.5-1% of wear-resisting agent, 0.1-0.3% of anti-emulsifying agent, 0.5-1% of drying agent, 0.05-0.12% of antioxidant and the balance solvent oil;
the solvent oil is prepared by compounding colloid oil, resin oil, mineral oil and vegetable oil in a mass ratio of 62.5:100:7.5: 1.
Preferably, the offset ink with high anti-emulsifying property comprises the following raw materials in percentage by weight: 19-21% of pigment, 5-7% of medium oil alkyd resin, 4-6% of filler, 1-1.4% of dispersing and wetting agent, 1-1.4% of flatting agent, 0.6-0.9% of wear-resisting agent, 0.15-0.25% of anti-emulsifying agent, 0.6-0.8% of drying agent, 0.08-0.11% of antioxidant and the balance of solvent oil.
Preferably, the offset ink with high anti-emulsification performance comprises the following raw materials in percentage by weight: 20% of pigment, 5% of medium oil alkyd resin, 5% of filler, 1% of dispersing wetting agent, 1% of flatting agent, 0.6% of wear-resisting agent, 0.2% of anti-emulsifying agent, 0.7% of drying agent, 0.1% of antioxidant and the balance solvent oil.
By adopting the technical scheme, the colloid oil, the resin oil, the mineral oil and the vegetable oil are compounded to be used as the solvent oil of the offset printing ink, the obtained solvent oil has excellent functions of dispersion, dissolution, dilution and the like, the compatibility is good, other raw materials in the formula can be effectively dispersed, and the finally prepared offset printing ink has excellent fluidity, transferability and transferability; the offset printing ink has the advantages of simple raw material selection, scientific formula and strict proportion, and the prepared offset printing ink has good viscosity, excellent anti-emulsifying property, excellent stability, solvent release property and printability by controlling the selection of the raw materials.
Preferably, the medium oil alkyd resin is prepared by compounding isophthalic acid alkyd resin and phthalic acid alkyd resin in a mass ratio of 4-7: 1.
By adopting the technical scheme, the medium oil alkyd resin has good dryness, and the addition of the medium oil alkyd resin can improve the glossiness and the weather resistance of the offset printing ink; the inventor finds that the isophthalic acid alkyd resin and the phthalic acid alkyd resin are compounded to be added as the medium oil alkyd resin, so that the prepared offset ink has the properties, the wettability and the water resistance of the finally prepared offset ink can be obviously improved, and the compatibility of the medium oil alkyd resin and other raw materials in the formula is better.
Preferably, the filler is at least one of nano calcium carbonate, fumed silica or superfine talcum powder.
Preferably, the dispersion wetting agent is at least one of HX-5030, HX-5042 and HX-5041.
Preferably, the leveling agent is at least one of DKX450 leveling agent, TEGO432 leveling agent and TEGO450 leveling agent.
Preferably, the anti-wear agent is a compound of polyethylene wax and polytetrafluoroethylene wax in a mass ratio of 3-8: 1.
By adopting the technical scheme, the polyethylene wax and the polytetrafluoroethylene wax are compounded and used for adding the offset printing ink, so that the viscosity, lubricity and fluidity of the offset printing ink can be effectively improved, the performances of wear resistance, corrosion resistance, oxidation resistance and the like of the offset printing ink are improved, the generation frequency of ink piling problems in the offset printing process can be effectively reduced, and the obtained offset printing ink is excellent in printability.
Preferably, the anti-emulsifier is prepared by the following method: grinding and mixing propylene oxide with polyethylene glycol, adding citric acid and 3-glycidyl ether oxypropyl triethoxysilane, grinding and mixing, heating to 75-88 deg.C, maintaining the temperature for 1-4 hr, and maintaining the temperature to obtain the desired anti-emulsifier; wherein the mass ratio of the epoxypropane to the polyethylene glycol to the citric acid to the 3-glycidyl ether oxypropyltriethoxysilane is 8-12:5-7:1-3: 1-2.
By adopting the technical scheme, the demulsifier is prepared by mixing and reacting the epoxy propane, the polyethylene glycol, the citric acid and the 3-glycidyl ether oxypropyl triethoxysilane.
Preferably, the drying agent is at least one of cobalt isooctanoate, manganese isooctanoate and zirconium isooctanoate.
Preferably, the antioxidant is at least one of butanone oxime, butyraldehyde oxime and methyl ethyl ketoxime.
Preferably, the gum oil is 584-1 gum oil; the resin oil is 218 resin oil; the mineral oil is kerosene; the vegetable oil is linseed oil.
By adopting the technical scheme, the inventor finds that under the condition that the preferable proportion of the colloid oil, the resin oil, the mineral oil and the vegetable oil is 62.5:100:7.5:1, the combination property of the solvent oil obtained by compounding is optimal when the colloid oil is 584-1 colloid oil, the resin oil is 218 resin oil, the mineral oil is selected from kerosene and the vegetable oil is selected from linseed oil, and the finally prepared offset printing ink is optimal in fluidity, transferability and transferability.
In a second aspect, the present application provides a method for preparing a high anti-emulsification offset ink, which adopts the following technical scheme:
a preparation method of offset printing ink with high anti-emulsification performance comprises the steps of mixing pigment, medium oil alkyd resin, filler, a dispersing wetting agent, a flatting agent, an anti-wear agent, an anti-emulsifier, a drying agent, an antioxidant and solvent oil according to weight percentage.
Preferably, the preparation method of the offset ink with high anti-emulsification performance specifically comprises the following steps:
s1, weighing the pigment, the medium oil alkyd resin, the filler, the dispersing and wetting agent, the leveling agent, the wear-resisting agent, the anti-emulsifying agent, the drying agent, the antioxidant and the solvent oil according to the weight percentage for later use;
s2, adding 1/2 mass of medium-oil alkyd resin and 3/4 mass of solvent oil into a stirrer, adding a pigment, stirring until the oil and the water are separated, then heating to 115-125 ℃, and stirring until the water is volatilized to obtain slurry;
s3, sequentially adding the filler, the wear-resisting agent, the dispersing wetting agent, the flatting agent and the anti-emulsifying agent into the slurry obtained in the step S2, stirring until no dry powder exists on the surface of the slurry, and continuing to accelerate stirring and dispersing until the dry powder is fully wetted;
s4, transferring the slurry obtained through the pre-dispersion treatment in the step S3 to a three-roller machine, and grinding and dispersing the slurry through the three-roller machine until the particle size of the slurry is smaller than 7 mu m to obtain base ink;
and S5, adding the medium oil alkyd resin, the solvent oil, the drying agent and the antioxidant into the base ink obtained in the step S4, stirring and dispersing uniformly, filtering and canning to obtain the required offset printing ink.
Preferably, in the step S3, the stirring rotation speed before acceleration is 30-120r/min, and the stirring rotation speed after acceleration is 300-800 r/min.
Preferably, the grinding temperature in the step S4 is 40-80 ℃, and the grinding pressure is 10-50pa/cm2。
By adopting the technical scheme, in the preparation process, the solvent oil and the medium-oil alkyd resin are divided into two parts, one part of the dispersed pigment is taken firstly, then the filler, the wear-resisting agent, the dispersing wetting agent, the flatting agent and the anti-emulsifying agent are sequentially added for dispersing, the pre-dispersed slurry is ground, and then the rest raw materials are added for stirring and dispersing uniformly, so that the required offset printing ink is prepared; in the preparation process, the temperature rise in the step S2 is controlled, so that the water squeezing and phase changing are realized by volatilizing moisture under the condition of ensuring the stability of the mixing performance of the raw materials; by controlling the stirring speed, the full wetting and dispersion of the auxiliary agents such as the filler, the wear-resisting agent and the like in the solvent oil are realized; by controlling grinding parameters, the prepared offset printing ink is ensured to have low fineness, good viscosity, excellent anti-emulsification property and the like; the preparation method is simple, the preparation conditions are mild, the obtained offset printing ink has excellent anti-emulsifying property, the generation frequency of the ink piling problem in the offset printing process can be effectively reduced, and the obtained offset printing ink has excellent printability.
In summary, the present application has the following beneficial effects:
the offset printing ink is prepared by taking compound solvent oil with good dispersion, dissolution, dilution and compatibility as a main material, adding pigment, filler and other auxiliary agents, and dispersing and grinding; the selection and the proportion of the raw materials are controlled, so that the prepared offset printing ink is excellent in viscosity, wettability and emulsifiability; by controlling the raw material mixing mode and processing parameters in the preparation process, the prepared offset printing ink is ensured to have small fineness, uniform dispersion and good stability; the offset printing ink prepared by the application has excellent anti-emulsification performance and printability, and can effectively avoid the problem of excessive emulsification of the offset printing ink in the offset printing process, thereby reducing the generation frequency of the problems of ink piling and the like.
Detailed Description
The present application will be described in further detail with reference to examples.
Preparation examples 1 to 5 provide methods for preparing the demulsifier.
Preparation example 1
The anti-emulsifier is prepared by the following method: grinding and mixing epoxypropane and polyethylene glycol, adding citric acid and 3-glycidyl ether oxypropyltriethoxysilane, continuously grinding and mixing uniformly, heating to 75 ℃, carrying out heat preservation treatment for 4 hours, and carrying out heat preservation to obtain the required anti-emulsifier; wherein the mass ratio of the epoxypropane to the polyethylene glycol to the citric acid to the 3-glycidyl ether oxypropyltriethoxysilane is 8:5:1: 1.
Preparation example 2
The anti-emulsifier is prepared by the following method: grinding and mixing epoxypropane and polyethylene glycol, adding citric acid and 3-glycidyl ether oxypropyltriethoxysilane, continuously grinding and mixing uniformly, heating to 78 ℃, carrying out heat preservation treatment for 3.5h, and carrying out heat preservation to obtain the required anti-emulsifier; wherein the mass ratio of the epoxypropane to the polyethylene glycol to the citric acid to the 3-glycidyl ether oxypropyltriethoxysilane is 9:5.5:1.5: 1.2.
Preparation example 3
The anti-emulsifier is prepared by the following method: grinding and mixing epoxypropane and polyethylene glycol, adding citric acid and 3-glycidyl ether oxypropyltriethoxysilane, continuously grinding and mixing uniformly, heating to 82 ℃, carrying out heat preservation treatment for 3 hours, and carrying out heat preservation to obtain the required anti-emulsifier; wherein the mass ratio of the epoxypropane to the polyethylene glycol to the citric acid to the 3-glycidyl ether oxypropyl triethoxysilane is 10:6:2: 1.5.
Preparation example 4
The anti-emulsifier is prepared by the following method: grinding and mixing epoxypropane and polyethylene glycol, adding citric acid and 3-glycidyl ether oxypropyltriethoxysilane, continuously grinding and mixing uniformly, heating to 85 ℃, carrying out heat preservation treatment for 2 hours, and carrying out heat preservation to obtain the required anti-emulsifier; wherein the mass ratio of the epoxypropane to the polyethylene glycol to the citric acid to the 3-glycidyl ether oxypropyl triethoxysilane is 11:6.5:2.5: 1.8.
Preparation example 5
The anti-emulsifier is prepared by the following method: grinding and mixing propylene oxide with polyethylene glycol, adding citric acid and 3-glycidyl ether oxypropyl triethoxysilane, grinding and mixing, heating to 88 deg.C, maintaining the temperature for 1 hr, and maintaining the temperature to obtain the desired anti-emulsifier; wherein the mass ratio of the epoxypropane to the polyethylene glycol to the citric acid to the 3-glycidyl ether oxypropyl triethoxysilane is 12:7:3: 2.
Examples 1-5 provide a high demulsibility flexographic ink and a method of making the same.
Example 1
The offset printing ink with high anti-emulsification performance comprises the following raw materials: 18Kg of pigment, 4Kg of medium oil alkyd resin, 3Kg of filler, 0.8Kg of dispersing wetting agent, 0.8Kg of leveling agent, 0.5Kg of wear-resistant agent, 0.1Kg of anti-emulsifying agent, 0.5Kg of drying agent, 0.05Kg of antioxidant, and 72.25Kg of solvent oil;
wherein the solvent oil is prepared by compounding 584-1 colloid oil, 218 resin oil, paraffin oil and soybean oil in a mass ratio of 62.5:100:7.5: 1;
the pigment is lithol red pigment;
the medium oil alkyd resin is obtained by compounding isophthalic acid alkyd resin and phthalic acid alkyd resin in a mass ratio of 4: 1;
the filler is nano calcium carbonate;
the dispersing and wetting agent is HX-5030;
the leveling agent is DKX 450;
the wear-resisting agent is a compound of polyethylene wax and polytetrafluoroethylene wax in a mass ratio of 3: 1;
the anti-emulsifier is the anti-emulsifier prepared in preparation example 1;
the drying agent is cobalt iso-octoate;
the antioxidant is butanone oxime;
a preparation method of offset printing ink with high anti-emulsification performance specifically comprises the following steps:
s1, weighing the pigment, the medium oil alkyd resin, the filler, the dispersing and wetting agent, the flatting agent, the wear-resisting agent, the anti-emulsifying agent, the drying agent, the antioxidant and the solvent oil according to the weight percentage for later use;
s2, adding 2Kg of medium oil alkyd resin and 50Kg of solvent oil into a stirrer, adding a pigment, stirring until the oil and the water are separated, then heating to 115 ℃, stirring until the water is volatilized, and obtaining slurry;
s3, sequentially adding the filler, the wear-resisting agent, the dispersing wetting agent, the flatting agent and the anti-emulsifying agent into the slurry obtained in the step S2, stirring at the rotating speed of 30r/min until no dry powder exists on the surface of the slurry, and continuously accelerating to the stirring rotating speed of 300r/min to stir and disperse until the dry powder is fully wetted;
s4, transferring the slurry obtained by the pre-dispersion treatment in the step S3 to a three-roller machine, controlling the grinding temperature to be 40 ℃ and the grinding pressure to be 10pa/cm2Grinding and dispersing the mixture by a three-roller machine until the particle size of the slurry is 6 mu m to obtain base ink;
and S5, adding the residual medium oil alkyd resin, solvent oil, drying agent and antioxidant into the base ink obtained in the step S4, stirring and dispersing uniformly, filtering and canning to obtain the required offset printing ink.
Example 2
The offset printing ink with high anti-emulsifying property comprises the following raw materials: 19Kg of pigment, 5Kg of medium oil alkyd resin, 4Kg of filler, 1Kg of dispersing wetting agent, 1Kg of leveling agent, 0.6Kg of wear-resistant agent, 0.15Kg of anti-emulsifying agent, 0.6Kg of drying agent, 0.08Kg of antioxidant and 68.57Kg of solvent oil;
wherein the solvent oil is prepared by compounding 584-1 colloid oil, 289 resin oil, paraffin oil and linseed oil in a mass ratio of 62.5:100:7.5: 1;
the pigment is lithol rubine pigment;
the medium oil alkyd resin is prepared by compounding isophthalic acid alkyd resin and phthalic acid alkyd resin in a mass ratio of 5: 1;
the filler is fumed silica;
the dispersion wetting agent is HX-5042;
the flatting agent is TEGO432 flatting agent;
the wear-resisting agent is a compound of polyethylene wax and polytetrafluoroethylene wax in a mass ratio of 4: 1;
the demulsifier was the demulsifier prepared in preparation example 2;
the drying agent is manganese isooctoate;
the antioxidant is butyraldehyde oxime;
a preparation method of offset printing ink with high anti-emulsification performance specifically comprises the following steps:
s1, weighing the pigment, the medium oil alkyd resin, the filler, the dispersing and wetting agent, the flatting agent, the wear-resisting agent, the anti-emulsifying agent, the drying agent, the antioxidant and the solvent oil according to the weight percentage for later use;
s2, adding 3Kg of medium oil alkyd resin and 48Kg of solvent oil into a stirrer, adding pigments, stirring until the oil and water are separated, then heating to 118 ℃, and stirring until the water is volatilized to obtain slurry;
s3, sequentially adding the filler, the wear-resisting agent, the dispersing wetting agent, the leveling agent and the anti-emulsifying agent into the slurry obtained in the step S2, stirring at a rotating speed of 50r/min until no dry powder exists on the surface of the slurry, and then continuously accelerating the stirring until the stirring rotating speed is 400r/min, stirring and dispersing until the dry powder is fully wetted;
s4, transferring the slurry obtained by the pre-dispersion treatment in the step S3 to a three-roller machine, controlling the grinding temperature to be 50 ℃ and the grinding pressure to be 20pa/cm2Grinding and dispersing the mixture by a three-roller machine until the particle size of the slurry is 5 mu m to obtain base ink;
and S5, adding the residual medium oil alkyd resin, solvent oil, drying agent and antioxidant into the base ink obtained in the step S4, stirring and dispersing uniformly, filtering and canning to obtain the required offset printing ink.
Example 3
The offset printing ink with high anti-emulsification performance comprises the following raw materials in percentage by weight: 20Kg of pigment, 5Kg of medium oil alkyd resin, 5Kg of filler, 1Kg of dispersing wetting agent, 1Kg of leveling agent, 0.6Kg of wear-resistant agent, 0.2Kg of anti-emulsifying agent, 0.7Kg of drying agent, 0.1Kg of antioxidant, and 66.4Kg of solvent oil;
wherein the solvent oil is prepared by compounding 584-1 colloid oil, 218 resin oil, kerosene and linseed oil in a mass ratio of 62.5:100:7.5: 1;
the pigment is lithol rubine pigment;
the medium oil alkyd resin is obtained by compounding isophthalic acid alkyd resin and phthalic acid alkyd resin in a mass ratio of 5.5: 1;
the filler is a mixture of nano calcium carbonate and gas phase silicon dioxide in a mass ratio of 2: 1;
the dispersing and wetting agent is HX-5041;
the leveling agent is TEGO450 leveling agent;
the wear-resisting agent is a compound of polyethylene wax and polytetrafluoroethylene wax in a mass ratio of 5: 1;
the demulsifier was the demulsifier prepared in preparation example 3;
the drying agent is zirconium isooctanoate;
the antioxidant is methyl ethyl ketoxime;
a preparation method of offset printing ink with high anti-emulsification performance specifically comprises the following steps:
s1, weighing the pigment, the medium oil alkyd resin, the filler, the dispersing and wetting agent, the flatting agent, the wear-resisting agent, the anti-emulsifying agent, the drying agent, the antioxidant and the solvent oil according to the weight percentage for later use;
s2, adding 3Kg of medium oil alkyd resin and 50Kg of solvent oil into a stirrer, adding pigment, stirring until the oil and water are separated, then heating to 120 ℃, and stirring until the water is volatilized to obtain slurry;
s3, sequentially adding the filler, the wear-resisting agent, the dispersing wetting agent, the leveling agent and the anti-emulsifying agent into the slurry obtained in the step S2, stirring at a rotating speed of 70r/min until no dry powder exists on the surface of the slurry, and then continuously accelerating the stirring until the stirring rotating speed is 500r/min, stirring and dispersing until the dry powder is fully wetted;
s4, transferring the slurry obtained by the pre-dispersion treatment of the step S3 to a three-roller machine, controlling the grinding temperature to be 60 ℃ and the grinding pressure to be 30pa/cm2Grinding and dispersing the mixture by a three-roller machine until the particle size of the slurry is 4 mu m to obtain base ink;
and S5, adding the residual medium oil alkyd resin, solvent oil, drying agent and antioxidant into the base ink obtained in the step S4, stirring and dispersing uniformly, filtering and canning to obtain the required offset printing ink.
Example 4
The offset printing ink with high anti-emulsification performance comprises the following raw materials in percentage by weight: 21Kg of pigment, 7Kg of medium oil alkyd resin, 6Kg of filler, 1.4Kg of dispersing and wetting agent, 1.4Kg of leveling agent, 0.9Kg of wear-resistant agent, 0.25Kg of anti-emulsifier, 0.8Kg of drying agent, 0.11Kg of antioxidant and 61.14Kg of solvent oil;
wherein the solvent oil is prepared by compounding 588-1 colloid oil, 218 resin oil, kerosene and soybean oil in a mass ratio of 62.5:100:7.5: 1;
the pigment is lithol red pigment;
the medium oil alkyd resin is prepared by compounding isophthalic acid alkyd resin and phthalic acid alkyd resin in a mass ratio of 4-7: 1;
the filler is superfine talcum powder;
the dispersing and wetting agent is HX-5041;
the leveling agent is DKX 450;
the wear-resisting agent is a compound of polyethylene wax and polytetrafluoroethylene wax in a mass ratio of 6: 1;
the demulsifier was the demulsifier prepared in preparation example 4;
the drying agent is zirconium isooctoate;
the antioxidant is methyl ethyl ketoxime;
a preparation method of offset printing ink with high anti-emulsifying property specifically comprises the following steps:
s1, weighing the pigment, the medium oil alkyd resin, the filler, the dispersing and wetting agent, the flatting agent, the wear-resisting agent, the anti-emulsifying agent, the drying agent, the antioxidant and the solvent oil according to the weight percentage for later use;
s2, adding 4Kg of medium oil alkyd resin and 45Kg of solvent oil into a stirrer, adding a pigment, stirring until the oil and the water are separated, then heating to 122 ℃, stirring until the water is volatilized, and obtaining slurry;
s3, sequentially adding the filler, the wear-resisting agent, the dispersing wetting agent, the leveling agent and the anti-emulsifying agent into the slurry obtained in the step S2, stirring at a rotating speed of 100r/min until no dry powder exists on the surface of the slurry, and then continuously accelerating the stirring until the stirring rotating speed is 700r/min, stirring and dispersing until the dry powder is fully wetted;
s4, transferring the slurry obtained by the pre-dispersion treatment in the step S3 to a three-roller machine, controlling the grinding temperature to be 70 ℃ and the grinding pressure to be 40pa/cm2Grinding and dispersing the mixture by a three-roller machine until the particle size of the slurry is 6 mu m to obtain base ink;
and S5, adding the residual medium oil alkyd resin, solvent oil, drying agent and antioxidant into the base ink obtained in the step S4, stirring and dispersing uniformly, filtering and canning to obtain the required offset printing ink.
Example 5
The offset printing ink with high anti-emulsification performance comprises the following raw materials in percentage by weight: 22Kg of pigment, 8Kg of medium oil alkyd resin, 7Kg of filler, 1.5Kg of dispersing and wetting agent, 1.5Kg of leveling agent, 1Kg of wear-resistant agent, 0.3Kg of anti-emulsifying agent, 1Kg of drying agent, 0.12Kg of antioxidant and 57.58Kg of solvent oil;
wherein the solvent oil is prepared by compounding 588-1 colloid oil, 289 resin oil, kerosene and linseed oil in a mass ratio of 62.5:100:7.5: 1;
the pigment is lithol red pigment;
the medium oil alkyd resin is prepared by compounding isophthalic acid alkyd resin and phthalic acid alkyd resin in a mass ratio of 7: 1;
the filler is fumed silica;
the dispersion wetting agent is HX-5042;
the flatting agent is TEGO432 flatting agent;
the wear-resisting agent is a compound of polyethylene wax and polytetrafluoroethylene wax in a mass ratio of 8: 1;
the demulsifier was the demulsifier prepared in preparation example 5;
the drying agent is cobalt iso-octoate;
the antioxidant is butanone oxime;
a preparation method of offset printing ink with high anti-emulsifying property specifically comprises the following steps:
s1, weighing the pigment, the medium oil alkyd resin, the filler, the dispersing and wetting agent, the leveling agent, the wear-resisting agent, the anti-emulsifying agent, the drying agent, the antioxidant and the solvent oil according to the weight percentage for later use;
s2, adding 4Kg of medium alkyd resin and 45Kg of solvent oil into a stirrer, adding a pigment, stirring until the oil and water are separated, then heating to 125 ℃, and stirring until the water is volatilized to obtain slurry;
s3, sequentially adding the filler, the wear-resisting agent, the dispersing wetting agent, the flatting agent and the anti-emulsifying agent into the slurry obtained in the step S2, stirring at a rotating speed of 120r/min until no dry powder exists on the surface of the slurry, and then continuously accelerating the stirring until the stirring rotating speed is 800r/min, stirring and dispersing until the dry powder is fully wetted;
s4, pre-dispersing the processed product in step S3Transferring the obtained slurry to a three-roller machine, controlling the grinding temperature to be 80 ℃ and the grinding pressure to be 50pa/cm2Grinding and dispersing the mixture by a three-roller machine until the particle size of the slurry is 5 mu m to obtain base ink;
and S5, adding the residual medium oil alkyd resin, solvent oil, drying agent and antioxidant into the base ink obtained in the step S4, stirring and dispersing uniformly, filtering and canning to obtain the required offset printing ink.
Example 6
The difference from example 3 is only that: the solvent oil is prepared by compounding 584-1 colloid oil, 218 resin oil, paraffin oil and soybean oil in a mass ratio of 62.5:100:7.5: 1.
Example 7
The difference from example 3 is only that: the solvent oil is prepared by compounding 584-1 colloid oil, 289 resin oil, paraffin oil and linseed oil in a mass ratio of 62.5:100:7.5: 1.
Example 8
The difference from example 3 is only that: the solvent oil is prepared by compounding 588-1 colloid oil, 218 resin oil, kerosene and soybean oil in a mass ratio of 62.5:100:7.5: 1.
Example 9
The difference from example 3 is only that: the solvent oil is prepared by compounding 588-1 colloid oil, 289 resin oil, kerosene and linseed oil in a mass ratio of 62.5:100:7.5: 1.
Example 10
The difference from example 3 is only that: the filler is nano calcium carbonate.
Example 11
The difference from example 3 is only that: in step S2, 2.5Kg of medium alkyd resin and 49.8Kg of solvent oil are taken and added into a stirrer, the pigment is added and stirred until the oil and water are separated, then the temperature is raised to 122 ℃, and the stirring is carried out until the water is volatilized, thus obtaining the slurry.
To verify the performance of the high demulsibility flexographic inks provided in the present application, the applicant set comparative examples 1 to 7, in which:
comparative example 1
The difference from example 3 is only that: the solvent oil is prepared by compounding 584-1 colloid oil, 218 resin oil and kerosene according to the mass ratio of 62.5:100: 7.5.
Comparative example 2
The difference from example 3 is only that: the solvent oil is prepared by compounding 584-1 colloid oil, 218 resin oil and linseed oil in a mass ratio of 62.5:100: 1.
Comparative example 3
The difference from example 3 is only that: the medium oil alkyd resin is isophthalic acid alkyd resin.
Comparative example 4
The difference from example 3 is only that: the medium oil alkyd resin is phthalic acid alkyd resin.
Comparative example 5
The difference from example 3 is that: the wear-resisting agent is polyethylene wax.
Comparative example 6
The difference from example 3 is that: the wear-resisting agent is polytetrafluoroethylene wax.
Comparative example 7
The difference from example 3 is that: the demulsifier was demulsifier D114.
Comparative example 8
The difference from example 3 is that the preparation method of the offset ink with high anti-emulsifying property specifically comprises the following steps:
s1, weighing the pigment, the medium oil alkyd resin, the filler, the dispersing and wetting agent, the flatting agent, the wear-resisting agent, the anti-emulsifying agent, the drying agent, the antioxidant and the solvent oil according to the weight percentage for later use;
s2, adding the medium oil alkyd resin and the solvent oil into a stirrer, adding the pigment, stirring until the oil and water are separated, then heating to 120 ℃, and stirring until the water is volatilized to obtain slurry;
s3, sequentially adding the filler, the wear-resisting agent, the dispersing wetting agent, the leveling agent and the anti-emulsifying agent into the slurry obtained in the step S2, stirring at a rotating speed of 70r/min until no dry powder exists on the surface of the slurry, and then continuously accelerating the stirring until the stirring rotating speed is 500r/min, stirring and dispersing until the dry powder is fully wetted;
s4, transferring the slurry obtained by the pre-dispersion treatment in the step S3 to a three-roller machine, and controlling the grinding temperature to be 6Grinding at 0 deg.C under a pressure of 30pa/cm2Grinding and dispersing the mixture by a three-roller machine until the particle size of the slurry is 4 mu m to obtain base ink;
and S5, adding a drying agent and an antioxidant into the base ink obtained in the step S4, stirring and dispersing uniformly, filtering and canning to obtain the required offset printing ink.
The properties of the high anti-emulsification offset inks prepared in examples 1 to 11 of the present application and comparative examples 1 to 8 were measured, respectively, to obtain the results shown in the following table 1:
wherein, according to the national standard: GB/T1724-;
according to the national standard: GB/T14624.5-1993 detects the viscosity of the offset ink;
viscosity: testing with a rotational viscometer;
according to the national standard: GB/T13217.4-2020 detects the fluidity of the offset ink;
detecting the tinting strength of the offset ink according to the national standard GB/T14624.2-2008;
the emulsification rate: and (3) detecting by using an emulsion rate tester, adding 50g of offset printing ink sample into a test cup of the emulsion rate tester, adding 50g of prepared fountain solution, stirring at the speed of 200r/min for 10min, then dropping out excessive free moisture, and calculating the mass percentage of the moisture absorbed by the ink in the ink.
Table 1:
Figure 527630DEST_PATH_IMAGE002
as can be seen from the data shown in table 1 above: the high anti-emulsification offset inks prepared in examples 1 to 11 of the present application have low fineness, appropriate viscosity and viscosity, good tinting strength, and excellent fluidity and anti-emulsification performance, and the high anti-emulsification offset inks prepared in examples 1 to 11 of the present application have far better overall performance than the high anti-emulsification offset inks prepared in comparative examples 1 to 8.
From example 3 and examples 6 to 9 it is apparent that: under the condition that the optimal ratio of the colloid oil, the resin oil, the mineral oil and the vegetable oil is 62.5:100:7.5:1, 584-1 colloid oil is selected as the colloid oil, 218 resin oil is selected as the resin oil, kerosene is selected as the mineral oil, and linseed oil is selected as the vegetable oil, the comprehensive performance of the solvent oil obtained by compounding is optimal, and the flowability, the transferability and the transferability of the finally prepared offset printing ink are optimal.
As can be seen from examples 3 and 10, the combination of the nano calcium carbonate and fumed silica is improved compared with the independent use of nano calcium carbonate.
From example 3 and example 11 it is clear that: according to the offset printing ink, the medium oil alkyd resin and the solvent oil are added to prepare the offset printing ink, and the properties of the prepared offset printing ink, such as viscosity, fluidity, emulsibility and the like, can be effectively adjusted by controlling the proportion of the medium oil alkyd resin and the solvent oil added in different preparation procedures.
From example 3 and comparative examples 1-2, it can be seen that: the solvent oil has excellent dispersing, dissolving, diluting and other functions, is good in compatibility, and can effectively disperse other raw materials in the formula, so that the finally prepared offset printing ink has excellent fluidity, transferability and transferability.
From example 3 and comparative examples 3 to 4, it can be seen that: according to the application, the isophthalic acid alkyd resin and the phthalic acid alkyd resin are compounded to be added as the medium oil alkyd resin, and compared with the method of independently adding the isophthalic acid alkyd resin or the phthalic acid alkyd resin, the finally prepared offset printing ink has better comprehensive performance;
from example 3 and comparative examples 5 and 6, it can be seen that: according to the offset printing ink, the polyethylene wax and the polytetrafluoroethylene wax are compounded and used for adding the offset printing ink, so that the viscosity, the lubricity and the fluidity of the offset printing ink can be effectively improved, and the comprehensive performance of the offset printing ink is improved.
From example 3 and comparative example 7, it can be seen that: the anti-emulsifying agent prepared by the method has excellent anti-emulsifying performance, and can change the tension of an oil/water interface, so that the function of quickly dividing water is realized; the demulsifier of the present application has better demulsification performance than demulsifier D114.
From example 3 and comparative example 8 it can be seen that: compared with the offset printing ink prepared by adding the medium oil alkyd resin and the solvent oil in one step in the comparative example 8, the offset printing ink prepared finally has better fluidity, transferability and emulsibility.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims (10)

1. The offset printing ink with high anti-emulsifying property is characterized by comprising the following raw materials in percentage by weight: 18-22% of pigment, 4-8% of medium oil alkyd resin, 3-7% of filler, 0.8-1.5% of dispersing and wetting agent, 0.8-1.5% of flatting agent, 0.5-1% of wear-resisting agent, 0.1-0.3% of anti-emulsifying agent, 0.5-1% of drying agent, 0.05-0.12% of antioxidant and the balance solvent oil;
the solvent oil is prepared by compounding colloid oil, resin oil, mineral oil and vegetable oil according to the mass ratio of 62.5:100:7.5: 1.
2. The offset ink with high demulsification performance as claimed in claim 1, which is characterized by comprising the following raw materials in percentage by weight: 19-21% of pigment, 5-7% of medium oil alkyd resin, 4-6% of filler, 1-1.4% of dispersing and wetting agent, 1-1.4% of flatting agent, 0.6-0.9% of wear-resisting agent, 0.15-0.25% of anti-emulsifying agent, 0.6-0.8% of drying agent, 0.08-0.11% of antioxidant and the balance of solvent oil.
3. The offset ink with high demulsification performance as claimed in claim 1, which is characterized by comprising the following raw materials in percentage by weight: 20% of pigment, 5% of medium oil alkyd resin, 5% of filler, 1% of dispersing and wetting agent, 1% of flatting agent, 0.6% of wear-resisting agent, 0.2% of anti-emulsifying agent, 0.7% of drying agent, 0.1% of antioxidant and the balance of solvent oil.
4. The offset ink with high emulsion resistance as claimed in claim 1, wherein the medium oil alkyd resin is compounded by isophthalic acid alkyd resin and phthalic acid alkyd resin in a mass ratio of 4-7: 1.
5. The high anti-emulsification offset ink as claimed in claim 1, wherein the anti-wear agent is a mixture of polyethylene wax and polytetrafluoroethylene wax in a mass ratio of 3-8: 1.
6. The offset ink with high demulsification performance according to claim 1, wherein the demulsifier is prepared by the following method: grinding and mixing propylene oxide and polyethylene glycol, adding citric acid and 3-glycidyl ether oxypropyltriethoxysilane, continuously grinding and mixing uniformly, heating to 75-88 ℃, carrying out heat preservation treatment for 1-4h, and carrying out heat preservation to obtain the required anti-emulsifier; wherein the mass ratio of the epoxypropane to the polyethylene glycol to the citric acid to the 3-glycidyl ether oxypropyltriethoxysilane is 8-12:5-7:1-3: 1-2.
7. The high demulsification-performance offset ink as claimed in claim 1, wherein the gum oil is 584-1 gum oil; the resin oil is 218 resin oil; the mineral oil is kerosene; the vegetable oil is linseed oil.
8. The method for preparing the offset printing ink with high antiemulsifying property of any one of claims 1-7, wherein the pigment, the medium oil alkyd resin, the filler, the dispersing wetting agent, the leveling agent, the wear-resistant agent, the anti-emulsifying agent, the drying agent, the antioxidant and the solvent oil are mixed according to weight percentage.
9. The method for preparing the offset ink with high antiemulsification performance according to claim 8, wherein the method comprises the following steps:
s1, weighing the pigment, the medium oil alkyd resin, the filler, the dispersing and wetting agent, the flatting agent, the wear-resisting agent, the anti-emulsifying agent, the drying agent, the antioxidant and the solvent oil according to the weight percentage for later use;
s2, adding 1/2 mass of medium-oil alkyd resin and 3/4 mass of solvent oil into a stirrer, adding a pigment, stirring until the oil and the water are separated, then heating to 115-125 ℃, and stirring until the water is volatilized to obtain slurry;
s3, sequentially adding the filler, the wear-resisting agent, the dispersing wetting agent, the flatting agent and the anti-emulsifying agent into the slurry obtained in the step S2, stirring until no dry powder exists on the surface of the slurry, and continuing to accelerate stirring and dispersing until the dry powder is fully wetted;
s4, transferring the slurry obtained through the pre-dispersion treatment in the step S3 to a three-roller machine, and grinding and dispersing the slurry through the three-roller machine until the particle size of the slurry is smaller than 7 mu m to obtain base ink;
and S5, adding the medium oil alkyd resin, the solvent oil, the drying agent and the antioxidant into the base ink obtained in the step S4, stirring and dispersing uniformly, filtering and canning to obtain the required offset printing ink.
10. The method for preparing the offset printing oil with high anti-emulsifying property as claimed in claim 9, wherein the stirring speed before acceleration is 30-120r/min and the stirring speed after acceleration is 300-800r/min in step S3.
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CN104292978A (en) * 2014-10-30 2015-01-21 佛山市儒林化工有限公司 Special thermosetting flat plate offset printing ink for membrane-covered iron and preparation method thereof
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