Novel transparent diluent and preparation method thereof

Abstract

The invention discloses a novel transparent diluent and a preparation method thereof. The novel transparent diluent comprises an ink binder, ink oil, a thickening agent and an auxiliary agent, the printing ink comprises 55-75% of the printing ink binder, 5-8% of the printing ink oil, 15-25% of the thickening agent and 1-5% of the auxiliary agent, the printing ink binder is a compound of rosin modified phenolic resin-soybean oil-printing ink oil-alkyd resin, the printing ink oil is high-boiling-point mineral oil, namely 5 # aromatic hydrocarbon-free mineral oil, and the auxiliary agent is an auxiliary agent. The solvent and the thickening agent are added into the formula composition, the resin solution is utilized to increase the stability and the fluidity of the ink, the glyceryl stearate is utilized to increase the thixotropy of the ink diluent, and the color of the ink is further increased, so that the ink diluent is clear in printed pattern, good in color and luster, and good in color and luster. Meanwhile, the production process is simple, the energy consumption is low, and the cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of ink diluents, in particular to a novel transparent diluent and a preparation method thereof. Background Art

[0002] The auxiliary material used in the preparation of light-colored ink is ink diluent. It is added to the ink to dilute the color, increase the brightness of the hue, and make the color more bright. The quality of the ink diluent is related to the film-forming material. The film-forming material is the material that forms the ink film and determines the properties of the ink film. It should be stable during the storage period without obvious physical and chemical changes. It is a natural oil, natural resin and synthetic resin, but it still has the following disadvantages in actual use.

[0003] The existing ink diluent raw materials are calculated by weight, and the specific preparation steps are as follows: 1. Take 60-70 parts of ink connecting material and 20-30 parts of ink filling material and add them into the stirring equipment, and stir for 2 hours; After the stirring in step 1 is completed, 2 the fineness is qualified by rolling with a pearl ink mill or a three-roll mill; After the stirring in step 2 is completed, 10 to 20 parts of ink oil 1-3 additives are added to the stirring device and stirred for 0.5 to 1 hour. After the stirring is completed, the indicators are adjusted to obtain the product.

[0004] Preferably, the stirring device is at normal temperature and pressure.

[0005] Preferably, the stirring speed in step 1 is 1100 r / min. Preferably, the filler is nano calcium carbonate.

[0006] Preferably, the desiccant is a cobalt-manganese desiccant. However, in the above method, all the nano-calcium carbonate in the formula has poor transparency and strong thixotropy, which will lead to poor color matching and poor clarity of the printed pattern. Summary of the invention

[0007] The purpose of the present invention is to solve the shortcomings of the prior art that nano calcium carbonate has poor transparency and strong thixotropy, which leads to poor color matching and poor clarity of printed patterns, and to propose a new transparent diluent and a preparation method thereof.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions: A new transparent diluent contains the following components in weight ratio: 55%-75% ink vehicle, 5%-8% ink oil, 15%-25% thickener and 1-5% auxiliary agent.

[0009] The above technical solution further includes: The ink vehicle is a composite of rosin-modified phenolic resin-soybean oil-ink oil-alkyd resin, wherein the soybean oil in the formula is heated to 160°C-180°C, and the rosin-modified phenolic resin in the formula is slowly added and heated to 220°C-230°C after it is completely dissolved, and kept warm for 40 minutes. After the heat preservation time is up, the alkyd resin in the formula is added and kept warm for 15 minutes, and then the ink oil in the formula is added to adjust the viscosity to 40,000-50,000 CP / 25°C) to improve the film-forming performance.

[0010] The ink oil is a high boiling point mineral oil (this model is 5# aromatic-free mineral oil) to increase the physical properties of the resin, such as gloss and density. The thickener is glyceryl stearate, which can increase the thixotropy of the multi-component ink diluent, thereby increasing the ink color and thus increasing the clarity of the printed pattern.

[0011] The additives include desiccant, anti-skinning agent, water-resistant agent and wear-resistant agent. The desiccant can increase the drying speed of the ink and is a cobalt-manganese-zirconium drying agent.

[0012] The water-resistant additive is polyamine polyamide, which is used to improve its water resistance and enhance the clarity and fluidity of printed products.

[0013] The wear-resistant additives are polytetrafluoroethylene wax and polyethylene wax, which are used to improve the abrasion resistance of printed products.

[0014] A novel method for preparing a transparent diluent comprises the following steps: Step 1: Prepare the raw materials according to the following weight ratio: ink binder 55%-75%, ink oil 5%-8%, thickener 15%-25%, desiccant 0.5-1%, water-resistant additive 0.2-0.5%, anti-friction agent 0.8-1.5%; Step 2: Add the ink vehicle into the container and stir it to evenly mix the ink oil and glyceryl stearate during stirring; Step 3: Add desiccant, anti-skinning agent, wear-resistant additive and water-resistant additive in sequence, and obtain the transparent ink diluent after stirring.

[0015] The present invention has the following beneficial effects: In the present invention, by adding a solvent and a thickener into the formula composition, the stability and fluidity of the ink are increased by using a resin solution, and stearic acid glyceryl is used to increase the thixotropy of the ink diluent, thereby increasing the ink color, so that the printing pattern of the ink diluent is clear, the gloss and density are high, and the production process is simple, the energy consumption is low, and the cost is saved. Implementation

[0016] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Example

[0017] Ink binder 55%-75%, ink oil 5%-8%, thickener 15%-25%, desiccant 0.5-1%, water-resistant additive 0.2-0.5%, anti-friction agent 0.8-1.5% Example

[0018] (1) Prepare the raw materials according to the following weight ratio: ink binder 55%-75%, ink oil 5%-8%, thickener 15%-25%, cobalt-manganese 0.5-1%, water-resistant additive 0.2-0.5%, anti-friction agent 0.8-1.5% (2) First, add the ink vehicle into the container, stir it, and evenly add the ink oil and glyceryl stearate during the stirring; (3) Then continue stirring until the temperature reaches 55°C, and add 1% desiccant, 2% anti-skinning agent, 0.3% water-resistant additive, and 1% wear-resistant additive in sequence and stir for 1-2 hours. The temperature is controlled at 50-60°C. After stirring, the ink diluent is obtained.

[0019] The performance of the produced transparent diluent was tested, and the test results are as follows: Appearance: uniform and transparent; Fluidity: 25-28mm.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of transparent diluent, characterized in that: Including ink binder, ink oil, thickener and additives; Among them, the proportion of each component is 55%-75% for ink binder, 5%-8% for ink oil, 15%-25% for thickener, and 1-5% for additive.

2. A novel transparent diluent according to claim 1, characterized in that: The ink binder is a composite of rosin-modified phenolic resin-soybean oil-ink oil-alkyd resin.

3. A novel transparent diluent according to claim 1, characterized in that: The ink oil is a high boiling point mineral oil, namely 5# aromatic-free mineral oil.

4. A novel transparent diluent according to claim 1, characterized in that: The auxiliary agents are desiccants, anti-skinning agents, water-resistant agents and wear-resistant agents.

5. A novel transparent diluent according to claim 4, characterized in that: The desiccant is cobalt-manganese-zirconium desiccant, the water-resistant additive is polyamine polyamide, and the wear-resistant additive is polytetrafluoroethylene wax and polyethylene wax.

6. A method for preparing a novel transparent diluent The novel transparent diluent according to claim 1 is characterized in that: The following steps are involved: Step 1: Prepare the raw materials according to the following weight ratio: ink binder 55%-75%, ink oil 5%-8%, thickener 15%-25%, desiccant 0.5-1%, water-resistant additive 0.2-0.5%, anti-friction agent 0.8-1.5%; Step 2: Add the ink vehicle into the container and stir it to evenly mix the ink oil and glyceryl stearate during stirring; Step 3: Add desiccant, anti-skinning agent, wear-resistant additive and water-resistant additive in sequence, and obtain the transparent ink diluent after stirring.

7. A novel transparent diluent and a preparation method thereof according to claim 6, characterized in that: The stirring temperature of the ink vehicle inside the container was 55°C.

8. A novel transparent diluent and a preparation method thereof according to claim 6, characterized in that: After adding the auxiliary agent, the stirring time is 1-2 hours and the stirring temperature is 50-60°C.