An environment-friendly offset printing ink drier, a preparation method and application thereof

Abstract

The present application provides an environment-friendly offset printing ink drier, a preparation method and application thereof. The environment-friendly offset printing ink drier comprises a bio-based resin, nano-zinc oxide, an oxidation accelerator, ethylene glycol, cellulose and an organic acid. The environment-friendly offset printing ink drier can reduce environmental impact, improve printing quality and adapt to different types of offset printing ink. The present application also provides a preparation method and application of the environment-friendly offset printing ink drier.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of ink, and particularly relates to an environment-friendly offset printing ink drier, a preparation method and application thereof. BACKGROUND

[0002] Offset printing is a common lithographic printing technology, widely used in book, magazine, packaging and advertising printing. In this printing process, in order to ensure high-quality printing and improve production efficiency, the rapid drying of offset printing ink is crucial. In order to achieve the requirement of rapid drying, the offset printing industry uses offset printing ink driers.

[0003] Offset printing ink drier is a chemical substance, usually liquid or solution, added to offset printing ink to accelerate the drying process of the ink. Its basic principle is to change the physical and chemical properties of the ink, making it easier to dry quickly. The role of the drier at least includes the following aspects: (1) promote solvent evaporation, the drier usually contains volatile solvents, which help to quickly evaporate the volatile components in the printing ink, thereby improving the drying speed; (2) introduce oxygen, the components in the drier help to introduce oxygen, promote the oxidation reaction in the ink, thereby accelerating the drying and curing of the ink; (3) adjust the rheological properties of the ink, the drier can change the viscosity and flowability of the ink to adapt to different printing machines and conditions, thereby improving the quality and production efficiency of the printed matter; (4) improve printing speed: the use of drier significantly speeds up the drying speed of printing ink, enabling the printing machine to run faster, thereby improving production efficiency; (5) reduce the stacking of printed matter: through rapid drying, the drying time between printed matters is shortened, reducing the ink transfer problem when stacking, improving the quality of printed matters; (6) reduce ink transfer: the drier can improve the resistance to ink transfer of printed matters, reducing the ink transfer between printed matters during printing; (7) improve color brightness: due to the improvement of drying speed, the ink is more easily attached to the printed paper, the color is brighter, and therefore the visual appeal of the printed matter is improved.

[0004] However, the current drier contains volatile organic compounds (VOCs), which are harmful to the environment and health, and different types of offset printing ink may require different types of drier, and the selection of appropriate drier to ensure ink compatibility remains to be solved. In summary, a new drier still needs to be developed. SUMMARY

[0005] The present application aims to at least solve one of the above technical problems in the prior art. To this end, the present application provides an environment-friendly offset printing ink drier, which can reduce environmental impact, improve printing quality and adapt to different types of offset printing ink.

[0006] The present application also provides a preparation method of an environment-friendly offset printing ink drier.

[0007] The present application also provides an application of the environment-friendly offset printing ink drier.

[0008] The first aspect of the present application provides an environment-friendly offset printing ink drier, which includes bio-based resin, nano-zinc oxide, oxidation promoter, ethylene glycol, cellulose, and organic acid.

[0009] One of the technical solutions of the present application related to the environment-friendly offset printing ink drier has at least the following beneficial effects:

[0010] The environment-friendly offset printing ink drier of the present application uses multiple components, which can reduce environmental impact, improve print quality, and adapt to different types of offset printing ink. Specifically:

[0011] The environment-friendly offset printing ink drier of the present application contains bio-based resin, which can be degraded and has the effect of improving the adhesion and curing of printing ink. The use of bio-based resin can reduce VOC emissions and improve the environmental friendliness of the drier, which helps to reduce the adverse effects on the environment and makes the printing industry more sustainable, as it can provide the required functionality without compromising print quality and reduce dependence on traditional chemical resins.

[0012] By adding nano-zinc oxide and oxidation promoter, the oxidation reaction can be promoted, and the drying speed of the printing ink can be accelerated, improving production efficiency.

[0013] The environment-friendly offset printing ink drier of the present application can improve the adhesion of printed products, reduce the problem of ink transfer during stacking, and improve the quality and clarity of printed products.

[0014] The environment-friendly offset printing ink drier of the present application can adjust the pH value of the drier by adding organic acid, making it suitable for different types of offset printing ink. This provides greater flexibility to meet different printing needs.

[0015] The environment-friendly offset printing ink drier of the present application can add antioxidants and bactericides as needed, thereby enhancing the stability of the drier, prolonging its life, reducing microbial erosion, and ensuring the consistency of the drier during storage and use.

[0016] The environment-friendly offset printing ink drier of the present application can reduce the adhesion between printed products, reduce the problem of ink transfer, and improve the printing effect due to its fast drying characteristics.

[0017] The environment-friendly offset printing ink drier of the present application uses water as the base solvent, which reduces VOC emissions and helps to reduce the adverse effects on the environment. In addition, bio-based resin is a biodegradable resin that is environmentally friendly.

[0018] Overall, the environmentally friendly offset printing ink catalyst of the present application is environmentally friendly and efficient, which can meet the needs of the printing industry, improve production efficiency, improve print quality, reduce adverse effects on the environment, and provide adaptability to meet the requirements of different types of offset printing ink.

[0019] The role of the bio-based resin is to improve the adhesion and curing of the printing ink, and the bio-based resin itself can be degraded.

[0020] The role of nano zinc oxide is to improve the transparency of the coating and increase the drying speed.

[0021] The oxidation promoter helps to promote oxidation reaction and improve drying speed.

[0022] The role of ethylene glycol is relatively slow evaporation, which can be used to improve the adhesion of printing ink.

[0023] The role of cellulose is a thickening agent, which is used to control the viscosity of the catalyst.

[0024] The role of organic acid is a pH regulator, which is used to ensure the stability and compatibility of the catalyst.

[0025] According to some embodiments of the present application, the nano zinc oxide is ethyl trimethoxysilane modified nano zinc oxide.

[0026] Ethyl trimethoxysilane modified nano zinc oxide can reduce the attraction between particles by chemical reaction with the surface of nano particles, improve the dispersibility of nano zinc oxide.

[0027] According to some embodiments of the present application, the oxidation promoter includes citric acid.

[0028] Citric acid can promote oxidation reaction and improve drying speed.

[0029] According to some embodiments of the present application, the cellulose is a mixture of hydroxypropyl methyl cellulose and methyl cellulose.

[0030] Hydroxypropyl methyl cellulose is a synthetic cellulose, which is often used in catalysts to improve viscosity, thickening and improve the tackiness of coatings. It can also improve the adhesion of the catalyst, which helps to reduce ink flow.

[0031] Methyl cellulose is another synthetic cellulose, which is used in catalysts to increase viscosity and control flow, which helps to improve the uniform distribution and adhesion of the catalyst.

[0032] Hydroxypropyl methyl cellulose and methyl cellulose have different chemical properties and characteristics respectively. Mixing the two types of cellulose can combine their advantages to some extent, improve the comprehensive performance, such as viscosity control, dispersibility and improved adhesion.

[0033] In terms of viscosity control, the use of hydroxypropyl methyl cellulose and methyl cellulose in combination facilitates the adjustment of the viscosity of the drier, making it easier to achieve the desired viscosity range and ensuring proper flowability and uniform distribution of the drier during the printing process.

[0034] In addition, the use of different types of cellulose helps to improve the dispersion of nano-zinc oxide and other ingredients in the drier. The use of hydroxypropyl methyl cellulose and methyl cellulose in combination can reduce the precipitation and aggregation of particles, ensuring their uniform distribution in the drier.

[0035] Both hydroxypropyl methyl cellulose and methyl cellulose have a positive impact on the adhesion and stability of the drier. The use of hydroxypropyl methyl cellulose and methyl cellulose in combination can further reduce problems such as offset and adhesion of printing ink during the printing process.

[0036] By using hydroxypropyl methyl cellulose and methyl cellulose in combination, the formulation of the drier can be adjusted according to specific printing needs and application scenarios. This provides greater flexibility to meet the needs of different printing inks.

[0037] According to some embodiments of the present application, the mass ratio of hydroxypropyl methyl cellulose to methyl cellulose is 1:3-5.

[0038] According to some embodiments of the present application, the organic acid includes acetic acid and / or malic acid.

[0039] Acetic acid is a common organic acid that can be used as a regulator for the drier to ensure proper pH value, while also having the effect of inhibiting microbial growth, which helps to maintain the stability of the drier.

[0040] Malic acid is a natural organic acid commonly used in the food and beverage industry. It can be used as a pH regulator in the drier to improve printing quality.

[0041] The mixture of acetic acid and malic acid as the organic acid helps to improve ink quality and printing efficiency while reducing adverse environmental impacts in the environmentally friendly offset printing ink drier.

[0042] The second aspect of the present application provides a method for preparing an environmentally friendly offset printing ink drier, comprising the following steps: adding the bio-based resin, nano-zinc oxide, oxidation promoter, ethylene glycol, cellulose, and organic acid into water as the base solvent and mixing uniformly.

[0043] The present application relates to a technical solution in the preparation method of an environmentally friendly offset printing ink drier, which has at least the following beneficial effects:

[0044] The preparation method of the present application does not require expensive equipment and complex process control, the reaction conditions are not harsh, the raw materials are easy to obtain, the production cost is low, and the industrial production is easy.

[0045] According to some embodiments of the present application, the stirring speed is 300 rpm-500 rpm; and / or, the stirring time is 0.5h-1.0h.

[0046] The third aspect of the present application provides an environmentally friendly offset printing ink, which comprises the environmentally friendly offset printing ink catalyst of the present application.

[0047] One of the technical solutions of the environmentally friendly offset printing ink of the present application has at least the following beneficial effects:

[0048] The environmentally friendly offset printing ink of the present application, due to the components including the environmentally friendly offset printing ink catalyst of the present application, at least has all the beneficial effects of the environmentally friendly offset printing ink catalyst. Specifically:

[0049] The environmentally friendly offset printing ink of the present application contains bio-based resin in the catalyst, which can be degraded and has the effect of improving the adhesion and curing of the printing ink. The use of bio-based resin can reduce VOC emissions and improve the environmental friendliness of the catalyst, which helps to reduce the adverse effects on the environment and makes the printing industry more sustainable, as it can provide the required functions without compromising the printing quality and reduce the dependence on traditional chemical resins.

[0050] The environmentally friendly offset printing ink of the present application is environmentally friendly and efficient, which can meet the needs of the printing industry, improve production efficiency, improve printing quality, and reduce adverse effects on the environment. DETAILED DESCRIPTION

[0051] The following are specific embodiments of the present application, and the technical solutions of the present application are further described in conjunction with the embodiments, but the present application is not limited to these embodiments.

[0052] In some embodiments of the present application, the present application provides an environmentally friendly offset printing ink catalyst, which comprises bio-based resin, nano-zinc oxide, oxidation promoter, ethylene glycol, cellulose and organic acid. It can be understood that the environmentally friendly offset printing ink catalyst of the present application uses a variety of ingredients, which can reduce environmental impact, improve printing quality and adapt to different types of offset printing ink. Specifically:

[0053] It is also understood that the environmentally friendly offset printing ink drier of the present application, which contains a bio-based resin that can degrade, has the effect of improving the adhesion and curing of the printing ink. The use of bio-based resin can reduce VOC emissions and improve the environmental friendliness of the drier, as it can provide the required function without compromising print quality and reduce reliance on traditional chemical resins, thus helping to reduce the negative impact on the environment and making the printing industry more sustainable.

[0054] Specifically, the present application can promote oxidation reaction and accelerate the drying speed of printing ink by adding nano zinc oxide and oxidation promoter, thereby improving production efficiency.

[0055] The environmentally friendly offset printing ink drier of the present application can improve the adhesion of printed matter, reduce the problem of ink transfer during stacking, and improve the quality and clarity of printed matter. The addition of organic acid can be used to adjust the pH value of the drier to adapt to different types of offset printing ink. This provides greater flexibility to meet different printing needs.

[0056] The environmentally friendly offset printing ink drier of the present application can add antioxidants and bactericides as needed to enhance the stability of the drier, prolong its life, and reduce microbial erosion, ensuring the consistency of the drier during storage and use. The environmentally friendly offset printing ink drier of the present application can reduce the adhesion between printed matter, reduce the problem of ink transfer, and improve the printing effect due to its fast drying characteristics.

[0057] The environmentally friendly offset printing ink drier of the present application can use water as the base solvent, reducing VOC emissions and helping to reduce the negative impact on the environment. In addition, the bio-based resin is a biodegradable resin that is environmentally friendly.

[0058] Overall, the environmentally friendly offset printing ink drier of the present application is environmentally friendly and efficient, capable of meeting the needs of the printing industry, improving production efficiency, improving print quality, reducing the negative impact on the environment, and providing adaptability to meet the requirements of different types of offset printing ink.

[0059] The bio-based resin is used to improve the adhesion and curing of the printing ink, and the bio-based resin itself can be degraded.

[0060] Nano zinc oxide is used to improve the transparency of the coating and increase the drying speed.

[0061] Oxidation promoter helps to promote oxidation reaction and improve drying speed.

[0062] The role of ethylene glycol is relatively slow evaporation, which can be used to improve the adhesion of printing ink.

[0063] Cellulose acts as a thickening agent to control the viscosity of the drier.

[0064] Organic acid acts as a pH adjuster to ensure the stability and compatibility of the drier.

[0065] In some embodiments of the present invention, the nano zinc oxide is ethyl trimethoxysilane-modified nano zinc oxide.

[0066] Ethyl trimethoxysilane-modified nano zinc oxide can reduce the attraction between particles by chemically reacting with the surface of the nanoparticles, improving the dispersibility of nano zinc oxide.

[0067] In some embodiments of the present invention, the oxidation promoter includes citric acid.

[0068] Citric acid can promote oxidation reactions and increase drying speed.

[0069] In some embodiments of the present invention, cellulose is a mixture of hydroxypropyl methylcellulose and methylcellulose.

[0070] Hydroxypropyl methylcellulose is a synthetic cellulose commonly used in driers to increase viscosity, thicken, and improve the tackiness of coatings. It can also improve the adhesion of the drier, helping to reduce ink flow.

[0071] Methylcellulose is another synthetic cellulose used in driers to increase viscosity and control flow, helping to achieve uniform distribution and adhesion of the drier.

[0072] Hydroxypropyl methylcellulose and methylcellulose have different chemical properties and characteristics. Mixing the two types of cellulose can combine their advantages to some extent, improving overall performance such as viscosity control, dispersibility, and improved adhesion.

[0073] In terms of viscosity control, the use of hydroxypropyl methylcellulose and methylcellulose together helps to adjust the viscosity of the drier, making it easier to achieve the desired viscosity range and ensuring proper flow and uniform distribution of the drier during printing.

[0074] In addition, mixing different types of cellulose helps to improve the dispersibility of nano zinc oxide and other ingredients in the drier. The use of hydroxypropyl methylcellulose and methylcellulose together can reduce particle sedimentation and aggregation, ensuring uniform distribution of the drier.

[0075] Both hydroxypropyl methylcellulose and methylcellulose can positively affect the adhesion and stability of the drier. Mixing hydroxypropyl methylcellulose and methylcellulose can further reduce printing ink problems such as offset and adhesion during printing.

[0076] By mixing hydroxypropyl methylcellulose and methylcellulose, the formula of the drying agent can be adjusted according to the specific printing needs and application scenarios. This provides greater flexibility to meet the needs of different printing inks.

[0077] In some embodiments of the present application, the mass ratio of hydroxypropyl methylcellulose and methylcellulose is 1:3-5.

[0078] In some embodiments of the present application, the organic acid includes acetic acid and / or malic acid.

[0079] Acetic acid is a common organic acid that can be used as a drying agent modifier to ensure proper pH while inhibiting microbial growth, helping to maintain the stability of the drying agent.

[0080] Malic acid is a natural organic acid commonly used in the food and beverage industry. It can be used as a pH adjuster in the drying agent to improve print quality.

[0081] The organic acid is a mixture of acetic acid and malic acid, which helps to improve ink quality and printing efficiency while reducing adverse environmental impacts in the environmentally friendly offset printing ink drying agent.

[0082] In some other embodiments of the present application, the present application provides a method for preparing an environmentally friendly offset printing ink drying agent, comprising the following steps: adding bio-based resin, nano-zinc oxide, oxidation promoter, ethylene glycol, cellulose and organic acid into water as a base solvent and mixing uniformly.

[0083] It should be noted that the preparation method of the present application does not require expensive equipment and complex process control, the reaction conditions are not harsh, the raw materials are easy to obtain, the production cost is low, and the industrial production is easy.

[0084] In some embodiments of the present application, the stirring speed is 300 rpm-500 rpm.

[0085] In some embodiments of the present application, the stirring time is 0.5 h-1.0 h.

[0086] In some other embodiments of the present application, an environmentally friendly offset printing ink is provided, the components of which include the environmentally friendly offset printing ink drying agent of the present application.

[0087] The environmentally friendly offset printing ink of the present application, due to the components including the environmentally friendly offset printing ink drying agent of the present application, at least has all the beneficial effects of the environmentally friendly offset printing ink drying agent. Specifically:

[0088] The environment-friendly offset printing ink of the present application contains a bio-based resin in the drier, which can be degraded and has the effect of improving the adhesion and curing of the printing ink. The use of the bio-based resin can reduce the emission of VOCs and improve the environmental friendliness of the drier, help to reduce the adverse effects on the environment, and make the printing industry more sustainable, as it can provide the required functions without compromising the printing quality and reduce the dependence on traditional chemical resins.

[0089] The environment-friendly offset printing ink of the present application is environment-friendly and efficient, and can meet the needs of the printing industry, improve production efficiency, improve printing quality, and reduce adverse effects on the environment.

[0090] The technical solutions of the present application will be better understood in combination with specific embodiments.

[0091] It should be noted that the raw materials for the action of the drier of the present application are obtained from the market. Specifically, the supplier of the bio-based resin is Nanjing Hegot. The supplier of nano-zinc oxide is Zhejiang Amet Nano Technology.

[0092] Example 1

[0093] This example prepared an environment-friendly offset printing ink drier, and the components are:

[0094] Bio-based resin: 100 parts,

[0095] Nano-zinc oxide: 1 part,

[0096] Oxidation promoter: 1 part,

[0097] Ethylene glycol: 5 parts,

[0098] Cellulose: 1 part,

[0099] Organic acid: 1 part.

[0100] The oxidation promoter is citric acid.

[0101] The cellulose is a mixture of hydroxypropyl methylcellulose and methylcellulose in a mass ratio of 1:3.

[0102] The organic acid is a mixed acid of acetic acid and malic acid in a mass ratio of 1:1.

[0103] The preparation method is:

[0104] Bio-based resin, nano-zinc oxide, oxidation promoter, ethylene glycol, cellulose and organic acid are added to water as the base solvent and mixed uniformly.

[0105] The stirring speed is 400 rpm.

[0106] The stirring time is 40 min.

[0107] Example 2

[0108] An environmentally friendly offset printing ink drier was prepared in this example, and the components were as follows:

[0109] Bio-based resin: 100 parts,

[0110] Nano zinc oxide: 3 parts,

[0111] Oxidation promoter: 3 parts,

[0112] Ethylene glycol: 7 parts,

[0113] Cellulose: 3 parts,

[0114] Organic acid: 3 parts.

[0115] The oxidation promoter was citric acid.

[0116] The cellulose was a mixture of hydroxypropyl methylcellulose and methylcellulose at a mass ratio of 1:3.

[0117] The organic acid was a mixed acid of acetic acid and malic acid at a mass ratio of 1:1.

[0118] The preparation method was as follows:

[0119] Bio-based resin, nano zinc oxide, oxidation promoter, ethylene glycol, cellulose, and organic acid were added to water as the base solvent and mixed uniformly.

[0120] The stirring speed was 400 rpm.

[0121] The stirring time was 40 min.

[0122] Example 3

[0123] An environmentally friendly offset printing ink drier was prepared in this example, and the components were as follows:

[0124] Bio-based resin: 100 parts,

[0125] Nano zinc oxide: 5 parts,

[0126] Oxidation promoter: 5 parts,

[0127] Ethylene glycol: 10 parts,

[0128] Cellulose: 5 parts,

[0129] Organic acid: 5 parts.

[0130] The oxidation promoter was citric acid.

[0131] The cellulose was a mixture of hydroxypropyl methylcellulose and methylcellulose at a mass ratio of 1:3.

[0132] The organic acid is a mixed acid of acetic acid and malic acid in a mass ratio of 1:1.

[0133] The preparation method is:

[0134] The bio-based resin, nano zinc oxide, oxidation promoter, ethylene glycol, cellulose and organic acid are added into water and mixed uniformly.

[0135] The stirring speed is 400 rpm.

[0136] The stirring time is 40 min.

[0137] Comparative Example 1

[0138] This comparative example prepares an environmentally friendly offset printing ink catalyst, and the components are:

[0139] Bio-based resin: 100 parts,

[0140] Nano zinc oxide: 5 parts,

[0141] Oxidation promoter: 5 parts,

[0142] Ethylene glycol: 10 parts,

[0143] Cellulose: 5 parts,

[0144] Organic acid: 5 parts.

[0145] The oxidation promoter is citric acid.

[0146] The cellulose is hydroxypropyl methyl cellulose.

[0147] The organic acid is a mixed acid of acetic acid and malic acid in a mass ratio of 1:1.

[0148] The preparation method is:

[0149] The bio-based resin, nano zinc oxide, oxidation promoter, ethylene glycol, cellulose and organic acid are added into water and mixed uniformly.

[0150] The stirring speed is 400 rpm.

[0151] The stirring time is 40 min.

[0152] Comparative Example 2

[0153] This comparative example prepares an environmentally friendly offset printing ink catalyst, and the components are:

[0154] Bio-based resin: 100 parts,

[0155] Nano zinc oxide: 5 parts,

[0156] Oxidation promoter: 5 parts,

[0157] Ethylene glycol: 10 parts,

[0158] Cellulose: 5 parts,

[0159] Organic acid: 5 parts.

[0160] The oxidation promoter is citric acid.

[0161] The cellulose is methyl cellulose.

[0162] The organic acid is a mixed acid of acetic acid and malic acid in a mass ratio of 1:1.

[0163] The preparation method is:

[0164] The bio-based resin, nano zinc oxide, oxidation promoter, ethylene glycol, cellulose and organic acid are added into water as the base solvent and mixed uniformly.

[0165] The stirring speed is 400 rpm.

[0166] The stirring time is 40 min.

[0167] The examples and comparative examples are used in SS5-000 ink with an addition ratio of 3 wt%. The drying performance of the ink is tested according to GB / T13217.5-2023 "Ink Drying Test Method", and the drying performance of the ink is tested according to GB / T 13217.7-2023 "Ink Adhesion Test Method", and the results are shown in Table 1.

[0168] Table 1

[0169] Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Drying time 4h 3.5h 3h 3h 3h Skinning time 2.5h 2h 1h 1h 1h Adhesion 0 level 0 level 0 level 1 level 2 level

[0170] The above describes the present application in detail in combination with examples, but the present application is not limited to the above examples, and various changes can be made within the knowledge possessed by those skilled in the art without departing from the purpose of the present application.

Claims

1. An environmentally friendly offset printing ink drier, characterized by, The environment-friendly offset printing ink drier consists of the following components in parts by weight: Bio-based resin: 100 parts, Nano zinc oxide: 1-5 parts, Oxidation promoter: 1-5 parts, Ethylene glycol: 5-10 parts, Cellulose: 1-5 parts, Organic acid: 1-5 parts; The cellulose is a mixture of hydroxypropyl methyl cellulose and methyl cellulose; the mass ratio of the hydroxypropyl methyl cellulose and the methyl cellulose is 1:3-5; The nano zinc oxide is ethyl trimethoxysilane modified nano zinc oxide; The oxidation promoter includes citric acid; The organic acid includes acetic acid and / or malic acid.

2. A process for preparing the environmentally friendly offset printing ink drier as claimed in claim 1, characterized in that, The method comprises the following steps: adding the bio-based resin, nano zinc oxide, oxidation promoter, ethylene glycol, cellulose and organic acid into water as a basic solvent and stirring to mix uniformly.

3. The method of claim 2, wherein, The stirring speed is 300 rpm-500 rpm; and / or, the stirring time is 0.5 h-1.0 h.

4. An environmentally friendly offset printing ink, characterized by The components of the environment-friendly offset printing ink include the environment-friendly offset printing ink drier according to claim 1.