An ink printing auxiliary agent for preventing the rapid skinning of offset printing ink, its preparation method and application

Abstract

The application discloses an ink auxiliary agent for preventing offset printing ink from forming a skin quickly, and a preparation method and application thereof. The ink auxiliary agent comprises the following components: tri-tert-butyl hydroxy benzoic acid, diethylene glycol butyl ether, a silicon-containing compound, an amino compound, an ester-containing compound and an auxiliary agent. The synergistic effect among the components in the ink auxiliary agent for preventing offset printing ink from forming a skin quickly can comprehensively play the effects of preventing skin formation, delaying drying, improving stability and operability, and the like, so as to improve the performance of the ink and the quality of the printing process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ink additives, in particular to an additive for preventing rapid skinning of offset printing ink and a preparation method and application thereof. BACKGROUND

[0002] Offset printing ink is a special ink used for offset printing, which is composed of pigments, resins, solvents and additives. Offset printing is a common printing technology that transfers ink from a printing plate to a printing surface through a printing press, achieving the replication of images and text.

[0003] However, offset printing ink is prone to skinning. The reasons for the easy skinning of offset printing ink mainly include the following aspects: solvent evaporation: the solvent in offset printing ink is an important component that maintains the fluidity of the ink. However, when the ink is exposed to air, the solvent will gradually evaporate, causing the ink to become more viscous. When the solvent evaporation rate is slow or the environmental humidity is high, a dry skin layer on the surface of the ink, i.e. skinning phenomenon, is easily formed. Ink composition: the resins and additives in offset printing ink also affect the tendency of skinning. Some resins will undergo oxidation reactions when exposed to air, forming solid substances and thus promoting the occurrence of skinning. In addition, the choice and use of additives can also affect skinning. Storage conditions: the storage conditions of offset printing ink have an important influence on its skinning tendency. If the ink is exposed to high temperature, high humidity or direct sunlight for a long time, the solvent evaporation is accelerated, the ink dries faster, and skinning is easily formed. In general, the most economical and practical way to prevent rapid skinning of offset printing ink is to add additives to the offset printing ink, but existing additives cannot truly prevent rapid skinning of offset printing ink.

[0004] Therefore, there is an urgent need to develop an effective additive to prevent rapid skinning of offset printing ink to solve the above problems. SUMMARY

[0005] The first technical problem to be solved by the present application is:

[0006] To solve the first technical problem, the technical solution adopted by the present application is:

[0007] The second technical problem to be solved by the present application is:

[0008] To solve the second technical problem, the technical solution adopted by the present application is:

[0009] The third technical problem to be solved by the present application is:

[0010] The application of the offset printing ink additive.

[0011] To solve the first technical problem, the technical solution adopted by the present application is:

[0012] An ink additive, the ink additive comprising the following components:

[0013] Tri-tert-butylhydroxybenzoic acid;

[0014] Diethylene glycol butyl ether;

[0015] Silicon-containing compounds;

[0016] Amino compounds;

[0017] Compounds containing esters;

[0018] Additives.

[0019] According to embodiments of the present invention, one of the technical solutions has at least one of the following advantages or beneficial effects:

[0020] In the ink additive of the present invention, the hydroxyl (OH) group in tri-tert-butylhydroxybenzoic acid can react with free radicals, thereby capturing and neutralizing free radicals and reducing the occurrence of oxidation reactions;

[0021] The ethylene glycol groups in diethylene glycol butyl ether can form hydrogen bonds or physical adsorption with the resin or other components in the ink, slowing down their diffusion rate on the surface and thus delaying the drying process.

[0022] Silicon groups in silicon-containing compounds can form chemical bonds or physical adsorption with the surface of printing materials, reducing the surface tension between ink and surface, enhancing wettability, and reducing the tendency to stick and clump.

[0023] The amino and ester groups in amino compounds and ester-containing compounds can form hydrogen bonds, ionic bonds, or physical adsorption with components in inks, improving the contact and wettability of inks with the surface of printing materials.

[0024] The synergistic effect of these components can comprehensively improve ink performance and printing quality by preventing skinning, delaying drying, and enhancing stability and workability.

[0025] According to one embodiment of the present invention, the ink additive comprises the following components in parts by weight:

[0026] 5-15 parts of tri-tert-butylhydroxybenzoic acid;

[0027] Diethylene glycol butyl ether, 5-15 parts;

[0028] Polyether-modified siloxane, 2-10 parts;

[0029] Amino compounds, 1-5 parts;

[0030] Compounds containing esters, 1-5 parts;

[0031] Additives, 0.1-2 parts.

[0032] According to one embodiment of the present invention, the silicon-containing compound includes polyether-modified siloxane.

[0033] Polyether-modified siloxanes are siloxane compounds containing polyether groups. Their role in ink additives is to improve the wetting, flowability, and anti-tack properties of inks. The polyether groups in polyether-modified siloxanes have strong hydrophilicity, allowing them to form hydrogen bonds or undergo physical adsorption with water molecules in the ink, thereby enhancing the contact and wetting properties between the ink and the printing material surface. This improved wetting reduces the surface tension between the ink and the printing material surface, making it easier for the ink to spread evenly during the printing process.

[0034] Among them, the siloxane groups in polyether-modified siloxanes have low surface energy and high flexibility, which can reduce the interaction forces between ink molecules, thereby improving the fluidity of the ink. In addition, siloxane groups can also form physical adsorption or ionic bonds with other ink components, changing the arrangement of ink molecules and making them easier to flow and transfer.

[0035] The flexibility and low surface energy of polyether-modified siloxanes can reduce the adhesion between ink and printing equipment or other surfaces. It can form a thin protective film on the ink surface, reducing friction between the ink and the equipment surface and decreasing the tendency for clumping and adhesion. This is according to one embodiment of the invention.

[0036] According to one embodiment of the present invention, the amino compound includes at least one of carbamate and amino alcohol, preferably, the amino compound includes at least one of ethyl 2-carbamate and 2-aminoethanol.

[0037] Carbamates have antioxidant and anti-skinning properties. They can react with oxygen in the ink, reducing the oxidative effect of oxygen on the ink, thereby slowing down the drying speed and preventing skinning. Amino alcohols increase the adhesion and bonding strength of the ink. They can chemically react with the components in the ink, enhancing the adhesion between the ink and the printing material and preventing the ink from rapidly skinning during the printing process.

[0038] Specifically, the amino compounds, together with tri-tert-butylhydroxybenzoic acid, delay the oxidation reaction of the ink through antioxidant action, reducing the occurrence of skinning.

[0039] According to one embodiment of the present invention, the amino compound, together with diethylene glycol butyl ether, increases the fluidity of the ink, making it easier to transfer during the printing process and reducing the possibility of skinning.

[0040] According to one embodiment of the present invention, the amino compound, together with the polyether-modified siloxane, provides lubricity and anti-sticking properties, reducing the skinning tendency of the ink.

[0041] According to one embodiment of the present invention, the amino compound, together with the ester-containing compound, increases the softness and spreadability of the ink, and prevents the ink from drying rapidly and forming during the printing process.

[0042] According to one embodiment of the present invention, the ester-containing compound includes isopropyl butyrate. Isopropyl butyrate can increase the lubricity of ink, making it easier to transfer and coat during the printing process. It reduces the friction between the ink and the printing material, reducing the likelihood of skinning. Isopropyl butyrate can reduce the tackiness of the ink, preventing it from prematurely adhering to the printing plate or forming lumps during the printing process. It helps maintain the fluidity of the ink and reduces the occurrence of skinning.

[0043] Specifically, isopropyl butyrate, together with the aforementioned amino compounds, synergistically increases the softness and spreadability of the ink, reducing the drying speed and skinning tendency of the ink during the printing process. Isopropyl butyrate, together with polyether-modified siloxanes, provides lubricity and anti-sticking properties, further reducing the skinning tendency of the ink.

[0044] According to one embodiment of the present invention, isopropyl butyrate interacts with other solvent components (such as alcohols or ketones) to modulate the rheological properties of the ink, making it more suitable for the printing process and reducing the possibility of skinning.

[0045] According to one embodiment of the present invention, the additives include at least one of antioxidants, drying retardants, wetting agents, and anti-sticking agents.

[0046] According to one embodiment of the present invention, the antioxidant includes at least one of di-tert-butyl-p-cresol and phenolic compounds.

[0047] Di-tert-butyl-p-cresol, as an antioxidant, can prevent the resins and oils in inks from being oxidized and reduce the occurrence of skinning.

[0048] According to one embodiment of the present invention, the wetting agent comprises a sulfonated polyester compound.

[0049] Sulfonated polyester compounds contain a large number of sulfonate ions or other negatively charged functional groups, which can form ionic bonds or electrostatic interactions with cations in ink, thereby changing the arrangement and interaction forces of ink molecules and preventing the binding and aggregation between ink molecules.

[0050] Sulfonate ions in sulfonated polyester compounds can form physical adsorption or chemical bonds with pigments or fillers in inks, thereby changing their surface properties and interaction forces, making them easier to disperse and suspend in inks, thus preventing precipitation and skinning.

[0051] The sulfonate ions in sulfonated polyester compounds also have a cleaning effect, which can remove impurities and contaminants from the ink, prevent them from aggregating and accumulating in the ink, and thus reduce the occurrence of skinning.

[0052] To solve the second technical problem, the technical solution adopted by the present invention is as follows:

[0053] A method for preparing the ink additive includes the following steps:

[0054] Tri-tert-butylhydroxybenzoic acid, diethylene glycol butyl ether, silicon-containing compounds, amino compounds, ester-containing compounds, and additives are mixed and stirred to obtain ink additives.

[0055] Another aspect of the present invention relates to the application of the ink additive in an anti-skinning agent for offset printing inks. This includes the ink additives described in the embodiments of the first aspect above. Since this application employs all the technical solutions of the aforementioned ink additives, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments.

[0056] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Detailed Implementation

[0057] The terms "preferred," "more preferably," etc., used in this invention refer to embodiments of the invention that provide certain beneficial effects under certain circumstances. However, other embodiments may also be preferred under the same or other circumstances. Furthermore, the description of one or more preferred embodiments does not imply that other embodiments are unavailable, nor is it intended to exclude other embodiments from the scope of this invention.

[0058] When a numerical range is disclosed herein, the range is considered continuous and includes the minimum and maximum values ​​of the range, as well as every value between the minimum and maximum values. Furthermore, when the range refers to integers, it includes every integer between the minimum and maximum values ​​of the range. Additionally, when multiple ranges are provided to describe a feature or characteristic, the ranges may be combined. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all subranges to which they are incorporated.

[0059] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present invention.

[0060] Unless otherwise specified, the reagents, methods and equipment used in this invention are all conventional reagents, methods and equipment in this technical field.

[0061] Example 1

[0062] An ink additive, said ink additive comprising the following components in parts by weight:

[0063] 5 parts of tri-tert-butylhydroxybenzoic acid;

[0064] Diethylene glycol butyl ether, 5 parts;

[0065] Polyether-modified siloxane, 2 parts;

[0066] Amino compound, 1 part;

[0067] One part of a compound containing an ester;

[0068] Additives, 0.1 parts.

[0069] Among them, silicon-containing compounds include polyether-modified siloxanes;

[0070] The amino compound comprises ethyl 2-carbamate and 2-aminoethanol in a weight ratio of 1:1.

[0071] The ester-containing compound includes isopropyl butyrate;

[0072] The additives include antioxidants, drying retardants, wetting agents, and anti-sticking agents;

[0073] The antioxidants include di-tert-butyl-p-cresol;

[0074] The wetting agent includes sulfonated polyester amide;

[0075] The method for preparing the above-mentioned ink additives includes the following steps:

[0076] Tri-tert-butylhydroxybenzoic acid, diethylene glycol butyl ether, silicon-containing compounds, amino compounds, ester-containing compounds, and additives are mixed and stirred to obtain ink additives.

[0077] A non-skinning offset printing ink comprises the following components in parts by weight:

[0078] 54 servings of main ingredients;

[0079] 1 part wax paste;

[0080] 12 parts pigment;

[0081] 0.2 parts of the above ink additives.

[0082] The wax paste is composed of the following components in parts by weight:

[0083] Flaxseed oil, 6 parts;

[0084] Mineral oil, 55 parts;

[0085] Beeswax, 32 parts;

[0086] The main ingredient has the following components in parts by weight:

[0087] Flaxseed oil, 12 parts;

[0088] Mineral oil, 43 parts;

[0089] Resin oil, 2 parts;

[0090] Tetradecyl alcohol, 0.2 parts.

[0091] Example 2

[0092] An ink additive, said ink additive comprising the following components in parts by weight:

[0093] 15 parts of tri-tert-butylhydroxybenzoic acid;

[0094] Diethylene glycol butyl ether, 15 parts;

[0095] Polyether-modified siloxane, 10 parts;

[0096] Amino compounds, 5 parts;

[0097] Compounds containing esters, 5 parts;

[0098] Additives, 2 parts.

[0099] Among them, silicon-containing compounds include polyether-modified siloxanes;

[0100] The amino compound comprises ethyl 2-carbamate and 2-aminoethanol in a weight ratio of 1:1.

[0101] The ester-containing compound includes isopropyl butyrate;

[0102] The additives include antioxidants, drying retardants, wetting agents, and anti-sticking agents;

[0103] The antioxidants include di-tert-butyl-p-cresol;

[0104] The wetting agent includes sulfonated polyester amide;

[0105] The method for preparing the above-mentioned ink additives includes the following steps:

[0106] Tri-tert-butylhydroxybenzoic acid, diethylene glycol butyl ether, silicon-containing compounds, amino compounds, ester-containing compounds, and additives are mixed and stirred to obtain ink additives.

[0107] A non-skinning offset printing ink comprises the following components in parts by weight:

[0108] 54 servings of main ingredients;

[0109] 1 part wax paste;

[0110] 12 parts pigment;

[0111] 0.2 parts of the above ink additives.

[0112] The wax paste is composed of the following components in parts by weight:

[0113] Flaxseed oil, 6 parts;

[0114] Mineral oil, 55 parts;

[0115] Beeswax, 32 parts;

[0116] The main ingredient has the following components in parts by weight:

[0117] Flaxseed oil, 12 parts;

[0118] Mineral oil, 43 parts;

[0119] Resin oil, 2 parts;

[0120] Tetradecyl alcohol, 0.2 parts.

[0121] Example 3

[0122] An ink additive, said ink additive comprising the following components in parts by weight:

[0123] 10 parts of tri-tert-butylhydroxybenzoic acid;

[0124] Diethylene glycol butyl ether, 10 parts;

[0125] Polyether-modified siloxane, 8 parts;

[0126] Amino compounds, 3 parts;

[0127] Compounds containing esters, 3 parts;

[0128] Additives, 0.6 parts.

[0129] Among them, silicon-containing compounds include polyether-modified siloxanes;

[0130] The amino compound comprises ethyl 2-carbamate and 2-aminoethanol in a weight ratio of 1:1.

[0131] The ester-containing compound includes isopropyl butyrate;

[0132] The additives include antioxidants, drying retardants, wetting agents, and anti-sticking agents;

[0133] The antioxidants include di-tert-butyl-p-cresol;

[0134] The wetting agent includes sulfonated polyester amide;

[0135] The method for preparing the above-mentioned ink additives includes the following steps:

[0136] Tri-tert-butylhydroxybenzoic acid, diethylene glycol butyl ether, silicon-containing compounds, amino compounds, ester-containing compounds, and additives are mixed and stirred to obtain ink additives.

[0137] A non-skinning offset printing ink comprises the following components in parts by weight:

[0138] 54 servings of main ingredients;

[0139] 1 part wax paste;

[0140] 12 parts pigment;

[0141] 0.2 parts of the above ink additives.

[0142] The wax paste is composed of the following components in parts by weight:

[0143] Flaxseed oil, 6 parts;

[0144] Mineral oil, 55 parts;

[0145] Beeswax, 32 parts;

[0146] The main ingredient has the following components in parts by weight:

[0147] Flaxseed oil, 12 parts;

[0148] Mineral oil, 43 parts;

[0149] Resin oil, 2 parts;

[0150] Tetradecyl alcohol, 0.2 parts.

[0151] Example 4

[0152] An ink additive, said ink additive comprising the following components in parts by weight:

[0153] 10 parts of tri-tert-butylhydroxybenzoic acid;

[0154] Diethylene glycol butyl ether, 15 parts;

[0155] Polyether-modified siloxane, 8 parts;

[0156] Amino compounds, 3 parts;

[0157] Compounds containing esters, 3 parts;

[0158] Additives, 0.6 parts.

[0159] Among them, silicon-containing compounds include polyether-modified siloxanes;

[0160] The amino compound comprises ethyl 2-carbamate and 2-aminoethanol in a weight ratio of 1:1.

[0161] The ester-containing compound includes isopropyl butyrate;

[0162] The additives include antioxidants, drying retardants, wetting agents, and anti-sticking agents;

[0163] The antioxidants include di-tert-butyl-p-cresol;

[0164] The wetting agent includes sulfonated polyester amide;

[0165] The method for preparing the above-mentioned ink additives includes the following steps:

[0166] Tri-tert-butylhydroxybenzoic acid, diethylene glycol butyl ether, silicon-containing compounds, amino compounds, ester-containing compounds, and additives are mixed and stirred to obtain ink additives.

[0167] A non-skinning offset printing ink comprises the following components in parts by weight:

[0168] 54 servings of main ingredients;

[0169] 1 part wax paste;

[0170] 12 parts pigment;

[0171] 0.2 parts of the above ink additives.

[0172] The wax paste is composed of the following components in parts by weight:

[0173] Flaxseed oil, 6 parts;

[0174] Mineral oil, 55 parts;

[0175] Beeswax, 32 parts;

[0176] The main ingredient has the following components in parts by weight:

[0177] Flaxseed oil, 12 parts;

[0178] Mineral oil, 43 parts;

[0179] Resin oil, 2 parts;

[0180] Tetradecyl alcohol, 0.2 parts.

[0181] Example 5

[0182] An ink additive, said ink additive comprising the following components in parts by weight:

[0183] 15 parts of tri-tert-butylhydroxybenzoic acid;

[0184] Diethylene glycol butyl ether, 5 parts;

[0185] Polyether-modified siloxane, 8 parts;

[0186] Amino compound, 2 parts;

[0187] Two parts of a compound containing an ester;

[0188] Additives, 0.6 parts.

[0189] Among them, silicon-containing compounds include polyether-modified siloxanes;

[0190] The amino compound comprises ethyl 2-carbamate and 2-aminoethanol in a weight ratio of 1:1.

[0191] The ester-containing compound includes isopropyl butyrate;

[0192] The additives include antioxidants, drying retardants, wetting agents, and anti-sticking agents;

[0193] The antioxidants include di-tert-butyl-p-cresol;

[0194] The wetting agent includes sulfonated polyester amide;

[0195] The method for preparing the above-mentioned ink additives includes the following steps:

[0196] Tri-tert-butylhydroxybenzoic acid, diethylene glycol butyl ether, silicon-containing compounds, amino compounds, ester-containing compounds, and additives are mixed and stirred to obtain ink additives.

[0197] A non-skinning offset printing ink comprises the following components in parts by weight:

[0198] 54 servings of main ingredients;

[0199] 1 part wax paste;

[0200] 12 parts pigment;

[0201] 0.2 parts of the above ink additives.

[0202] The wax paste is composed of the following components in parts by weight:

[0203] Flaxseed oil, 6 parts;

[0204] Mineral oil, 55 parts;

[0205] Beeswax, 32 parts;

[0206] The main ingredient has the following components in parts by weight:

[0207] Flaxseed oil, 12 parts;

[0208] Mineral oil, 43 parts;

[0209] Resin oil, 2 parts;

[0210] Tetradecyl alcohol, 0.2 parts.

[0211] Example 6

[0212] An ink additive, said ink additive comprising the following components in parts by weight:

[0213] 10 parts of tri-tert-butylhydroxybenzoic acid;

[0214] Diethylene glycol butyl ether, 10 parts;

[0215] Polyether-modified siloxane, 8 parts;

[0216] Amino compounds, 3 parts;

[0217] One part of a compound containing an ester;

[0218] Additives, 0.1 parts.

[0219] Among them, silicon-containing compounds include polyether-modified siloxanes;

[0220] The amino compound comprises ethyl 2-carbamate and 2-aminoethanol in a weight ratio of 1:1.

[0221] The ester-containing compound includes isopropyl butyrate;

[0222] The additives include antioxidants, drying retardants, wetting agents, and anti-sticking agents;

[0223] The antioxidants include di-tert-butyl-p-cresol;

[0224] The wetting agent includes sulfonated polyester amide;

[0225] The method for preparing the above-mentioned ink additives includes the following steps:

[0226] Tri-tert-butylhydroxybenzoic acid, diethylene glycol butyl ether, silicon-containing compounds, amino compounds, ester-containing compounds, and additives are mixed and stirred to obtain ink additives.

[0227] A non-skinning offset printing ink comprises the following components in parts by weight:

[0228] 54 servings of main ingredients;

[0229] 1 part wax paste;

[0230] 12 parts pigment;

[0231] 0.2 parts of the above ink additives.

[0232] The wax paste is composed of the following components in parts by weight:

[0233] Flaxseed oil, 6 parts;

[0234] Mineral oil, 55 parts;

[0235] Beeswax, 32 parts;

[0236] The main ingredient has the following components in parts by weight:

[0237] Flaxseed oil, 12 parts;

[0238] Mineral oil, 43 parts;

[0239] Resin oil, 2 parts;

[0240] Tetradecyl alcohol, 0.2 parts.

[0241] Example 7

[0242] An ink additive, said ink additive comprising the following components in parts by weight:

[0243] 10 parts of tri-tert-butylhydroxybenzoic acid;

[0244] Diethylene glycol butyl ether, 10 parts;

[0245] Polyether-modified siloxane, 10 parts;

[0246] Amino compounds, 5 parts;

[0247] Compounds containing esters, 3 parts;

[0248] Additives, 0.7 parts.

[0249] Among them, silicon-containing compounds include polyether-modified siloxanes;

[0250] The amino compound comprises ethyl 2-carbamate and 2-aminoethanol in a weight ratio of 1:1.

[0251] The ester-containing compound includes isopropyl butyrate;

[0252] The additives include antioxidants, drying retardants, wetting agents, and anti-sticking agents;

[0253] The antioxidants include di-tert-butyl-p-cresol;

[0254] The wetting agent includes sulfonated polyester amide;

[0255] The method for preparing the above-mentioned ink additives includes the following steps:

[0256] Tri-tert-butylhydroxybenzoic acid, diethylene glycol butyl ether, silicon-containing compounds, amino compounds, ester-containing compounds, and additives are mixed and stirred to obtain ink additives.

[0257] A non-skinning offset printing ink comprises the following components in parts by weight:

[0258] 54 servings of main ingredients;

[0259] 1 part wax paste;

[0260] 12 parts pigment;

[0261] 0.2 parts of the above ink additives.

[0262] The wax paste is composed of the following components in parts by weight:

[0263] Flaxseed oil, 6 parts;

[0264] Mineral oil, 55 parts;

[0265] Beeswax, 32 parts;

[0266] The main ingredient has the following components in parts by weight:

[0267] Flaxseed oil, 12 parts;

[0268] Mineral oil, 43 parts;

[0269] Resin oil, 2 parts;

[0270] Tetradecyl alcohol, 0.2 parts.

[0271] Example 8

[0272] An ink additive, said ink additive comprising the following components in parts by weight:

[0273] 15 parts of tri-tert-butylhydroxybenzoic acid;

[0274] Diethylene glycol butyl ether, 12 parts;

[0275] Polyether-modified siloxane, 10 parts;

[0276] Amino compounds, 3 parts;

[0277] Two parts of a compound containing an ester;

[0278] Additives, 0.6 parts.

[0279] Among them, silicon-containing compounds include polyether-modified siloxanes;

[0280] The amino compound comprises ethyl 2-carbamate and 2-aminoethanol in a weight ratio of 1:1.

[0281] The ester-containing compound includes isopropyl butyrate;

[0282] The additives include antioxidants, drying retardants, wetting agents, and anti-sticking agents;

[0283] The antioxidants include di-tert-butyl-p-cresol;

[0284] The wetting agent includes sulfonated polyester amide;

[0285] The method for preparing the above-mentioned ink additives includes the following steps:

[0286] Tri-tert-butylhydroxybenzoic acid, diethylene glycol butyl ether, silicon-containing compounds, amino compounds, ester-containing compounds, and additives are mixed and stirred to obtain ink additives.

[0287] A non-skinning offset printing ink comprises the following components in parts by weight:

[0288] 54 servings of main ingredients;

[0289] 1 part wax paste;

[0290] 12 parts pigment;

[0291] 0.2 parts of the above ink additives.

[0292] The wax paste is composed of the following components in parts by weight:

[0293] Flaxseed oil, 6 parts;

[0294] Mineral oil, 55 parts;

[0295] Beeswax, 32 parts;

[0296] The main ingredient has the following components in parts by weight:

[0297] Flaxseed oil, 12 parts;

[0298] Mineral oil, 43 parts;

[0299] Resin oil, 2 parts;

[0300] Tetradecyl alcohol, 0.2 parts.

[0301] Performance testing:

[0302] Examples 1-8 and the prepared non-skinning offset printing ink were tested using a Heidelberg Printmaster GTO52 instrument. After using the offset printing ink prepared in Examples 1-8 for 300 hours, no skinning phenomenon occurred in the printer.

[0303] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An ink additive, characterized in that: The ink additives include the following components: 5-15 parts of tri-tert-butylhydroxybenzoic acid; Diethylene glycol butyl ether, 5-15 parts; Silicon-containing compounds, 2-10 parts; Amino compounds, 1-5 parts; Compounds containing esters, 1-5 parts; Additives, 0.1-2 parts; The silicon-containing compounds include polyether-modified siloxanes; The amino compound is ethyl 2-carbamate and 2-aminoethanol; The ester-containing compound is isopropyl butyrate.

2. The ink additive according to claim 1, characterized in that: The additives include at least one of antioxidants, drying retardants, humectants, and anti-sticking agents.

3. The ink additive according to claim 2, characterized in that: The antioxidant includes at least one of di-tert-butyl-p-cresol and phenolic compounds.

4. An ink additive according to claim 2, characterized in that: The wetting agent includes sulfonated polyester compounds.

5. A method for preparing an ink additive as described in any one of claims 1 to 4, characterized in that: Includes the following steps: Tri-tert-butylhydroxybenzoic acid, diethylene glycol butyl ether, silicon-containing compounds, amino compounds, ester-containing compounds, and additives are mixed and stirred to obtain ink additives.

6. The application of an ink additive as described in any one of claims 1 to 4 in an anti-skinning agent for offset printing inks.