A method for improving the ink solubility of an ethanol single solvent type acrylic resin

Abstract

The application discloses a method for improving the ink solubility of ethanol single-solvent type acrylic resin, which comprises the following steps: (1) dispersing and mixing ethanol, ethanol single-solvent type acrylic resin, a dispersing agent, titanium white and an extinction powder, and then grinding the dispersed materials to obtain the ground ink; and (2) adding an ethanol solution of polyketone modified rosin resin into the ground ink, and filtering the obtained material to obtain the ethanol single-solvent type acrylic resin ink. The method can effectively improve the ink solubility, and solve the problems of blocked plate and poor printed products in the printing process.

Description

TECHNICAL FIELD

[0001] The present application relates to a method for improving the printing performance of ink, in particular to a method for improving the ink solubility of ethanol single solvent type acrylic resin. BACKGROUND

[0002] The environmental and health problems caused by solvent-based ink have attracted much attention. However, in the field of gravure printing, the recognized environmentally friendly water-based ink cannot meet the high-speed printing of 300 meters per minute and above due to the large surface tension of water and slow drying speed, and cannot replace solvent-based ink.

[0003] Resin as the main component of ink plays a decisive role in the performance of ink and the applicable solvent. In order to solve the environmental and health problems, solvent-based acrylic resin and ink are also developing. Traditional solvent-based acrylic resin and ink use benzene and ketone as solvent, which seriously pollutes the environment and harms health, and has been eliminated. The benzene and ketone solvents used are gradually replaced by ester and alcohol solvents. In particular, ethanol single solvent type acrylic resin and ink, which only use ethanol as solvent, have no unpleasant odor during ink preparation and printing, and ethanol is easy to recycle. However, ethanol single solvent type acrylic resin and ink also have disadvantages. The ink solubility on the printing plate during printing is a problem. The method of using a variety of different solvents mixed together to improve the ink solubility cannot be used. The solubility of ethanol single solvent to ink is not good enough, which causes plate blocking, poor printing, frequent shutdown and plate cleaning, and other problems such as inconvenience, increased production cost and labor intensity of operators. For example, patent document CN101319109A discloses the preparation of a benzene-free alcohol soluble gravure plastic ink, CN102718916B and CN101613434B disclose the preparation of alcohol soluble acrylic resin and its application in ink coating, but the known documents avoid the actual existence of the ink solubility problem on the printing plate during printing of ethanol single solvent type ink, and do not discuss or propose ideas and solutions to solve the problem. SUMMARY

[0004] The present application provides a method for improving the ink solubility of ethanol single solvent type acrylic resin, which meets the high-speed printing of long time continuous non-stop, ensures the quality of printed products, improves production efficiency, reduces production cost and labor intensity of operators.

[0005] Technical scheme: The method for improving the ink solubility of ethanol single solvent type acrylic resin comprises the following steps:

[0006] (1) dispersing and mixing ethanol, ethanol single solvent type acrylic resin, dispersing agent, titanium dioxide and matting powder, then grinding the dispersed materials to obtain a ground ink;

[0007] (2) add the ethanol solution of the polyketone modified rosin resin into the ground ink to disperse and mix, and filter the product to obtain the ethanol single solvent type acrylic resin ink.

[0008] Further, the weight parts of each raw material are as follows: ethanol 25-35 parts, ethanol single solvent type acrylic resin 30-45 parts, dispersant 0.5-4 parts, titanium white 30-45 parts, matting powder 0.2-2 parts, and ethanol solution of polyketone modified rosin resin 5-15 parts.

[0009] Further, in step (1), each material is added into the cylinder of a high-speed disperser to disperse and mix, and after mixing, the rotation speed is controlled to be 1000-1200 rpm, and the pre-dispersion time is 30-40 minutes, and the grinding fineness is controlled to be below 20 microns.

[0010] Further, in step (2), the rotation speed during mixing is controlled to be 1000-1200 rpm, and the dispersion time is 15-20 minutes.

[0011] Further, the ethanol single solvent type acrylic resin ink is diluted with ethanol at a ratio of 100:60-100, and after stirring, it is used for printing.

[0012] Further, the preparation method of the ethanol solution of the polyketone modified rosin resin comprises: heating reaction of alcohol-soluble polyketone resin, alcohol-soluble rosin, and catalyst zinc oxide, cooling to 80-90℃ after the reaction is completed, adding ethanol with a material temperature of 75-85℃, stirring and dissolving, cooling to below 50℃, removing the insoluble substances by filtration, and obtaining the ethanol solution of the polyketone modified rosin resin.

[0013] Further, the solid content of the obtained ethanol solution of the polyketone modified rosin resin is 50%, and the solid content acid value is 110-130 mgKOH / g.

[0014] Further, in the preparation of the ethanol solution of the polyketone modified rosin resin, the weight parts of each raw material are as follows: alcohol-soluble polyketone resin 25-35 parts, alcohol-soluble rosin 80-120 parts, catalyst zinc oxide 0.1-0.3 parts, and ethanol 120-150 parts, the reaction temperature is 220-250℃, and the reaction time is 4-6 hours.

[0015] Beneficial effects: Compared with the prior art, the present application has the following remarkable advantages: the solubility of the ethanol single solvent type acrylic resin ink during printing can be effectively improved, and the problems of blocked plate and poor printing products during printing are solved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 To compare the plate solubility effect of Example 1 with that of Comparative Example 1 and Comparative Example 2.

[0017] Fig. 2 To compare the plateout effect of Example 2 with those of Comparative Example 1 and Comparative Example 4;

[0018] Fig. 3 To compare the plateout effect of Example 3 with those of Comparative Example 3 and Comparative Example 5. DETAILED DESCRIPTION

[0019] The technical solutions of the present application are further described below in combination with the drawings.

[0020] The equipment in this example are all conventional equipment for producing gravure ink on the market, including high-speed stirring dispersing machine, horizontal sand mill, cylinder and gravure printing machine, etc.

[0021] Preparation method of polyketone modified rosin resin ethanol solution:

[0022] A reaction kettle equipped with a condenser was vacuumed and then replaced with nitrogen. After the normal pressure was restored, 35 parts of alcohol-soluble polyketone resin (hydroxyl value 120 mgKOH / g), 100 parts of alcohol-soluble rosin (acid value 190-210 mgKOH / g) and 0.2 parts of catalyst zinc oxide were added, heated and melted, stirred, and reacted at 220-250°C for 4-6 hours. The temperature was cooled to 80-90°C, 130 parts of ethanol were gradually added, the temperature of the kettle contents was maintained at 75-85°C (ethanol vapor was cooled and refluxed into the reaction kettle through the condenser), and then stirred and dissolved. After cooling to below 50°C, the catalyst and other insoluble substances were removed by filtration to obtain polyketone modified rosin resin ethanol solution (solid content 50%, solid acid value 110-130 mgKOH / g).

[0023] Example 1

[0024] 1. The solvent is ethanol (purity above 95%, water content 0-5%).

[0025] 2. Under the condition that the temperature does not exceed 40°C, 30 parts of ethanol single solvent type acrylic resin GH-AAC-976 (solid content 50%, solid hydroxyl value 42-48 mgKOH / g, solid acid value 58-63 mgKOH / g, purchased from Changshu Guohexin Material Co., Ltd.) were added to the cylinder, and the high-speed dispersing machine was started (400 rpm). Then 20 parts of ethanol, 0.5 parts of dispersant (Lubrizol 20000), 0.5 parts of matting powder (OK-412) and 30 parts of titanium dioxide were added in sequence while stirring. After the addition was completed, the speed was adjusted to 1000 rpm and stirring was continued for 30 minutes.

[0026] 3. After the completion of step 2, the dispersing machine was cleaned with 2 parts of ethanol, and the cylinder was transferred to the horizontal sand mill for grinding.

[0027] 4. Grind the above materials using a sand mill at a temperature not exceeding 40℃. After grinding to a fineness of less than 20 microns, clean the sand mill with 7 parts ethanol, weigh and calculate the loss, replenish the loss with ethanol, and then transfer the mill to a high-speed disperser.

[0028] 5. Under conditions where the temperature does not exceed 40℃, add 10 parts of polyketone modified rosin resin ethanol solution (solid content 50%, solid acid value 110-130mgKOH / g) to the material ground in step 4, adjust the stirring speed to 1000 rpm, stir for 15 minutes, then filter and package to obtain ethanol single solvent type acrylic resin ink.

[0029] 6. When printing, mix ink and ethanol in a ratio of 100:60-100, stir well, and then print.

[0030] Example 2

[0031] 1. The solvent is ethanol (purity above 95%, water content 0-5%).

[0032] 2. Under conditions where the temperature does not exceed 40℃, add 30 parts of ethanol-based single-solvent acrylic resin GH-AAC-982 (solid content 50%, solid hydroxyl value 86-91 mgKOH / g, solid acid value 0-2 mgKOH / g, purchased from Changshu Guohe New Materials Co., Ltd.) to the mixing tank. Turn on the high-speed disperser (400 rpm) and add 20 parts of ethanol, 0.5 parts of dispersant (Lubrizol 20000), 0.5 parts of matting agent (OK-412), and 30 parts of titanium dioxide in sequence while stirring. After adding the materials, adjust the speed to 1000 rpm and stir for 30 minutes.

[0033] 3. After step 2 is completed, clean the disperser with 2 parts ethanol and transfer the disperser to the horizontal sand mill for grinding.

[0034] 4. Grind the above materials using a sand mill at a temperature not exceeding 40℃. After grinding to a fineness of less than 20 microns, clean the sand mill with 7 parts ethanol, weigh and calculate the loss, replenish the loss with ethanol, and then transfer the mill to a high-speed disperser.

[0035] 5. Under conditions where the temperature does not exceed 40℃, add 10 parts of polyketone modified rosin resin ethanol solution (solid content 50%, solid acid value 110-130mgKOH / g) to the material ground in step 4, adjust the stirring speed to 1000 rpm, stir for 15 minutes, then filter and package to obtain ethanol single solvent type acrylic resin ink.

[0036] 6. When printing, mix ink and ethanol in a ratio of 100:60-100, stir well, and then print.

[0037] Example 3

[0038] 1. The solvent is ethanol (purity above 95%, water content 0-5%).

[0039] 2. Under conditions where the temperature does not exceed 40℃, add 30 parts of ethanol-based single-solvent acrylic resin GH-AAC-981 (solid content 50%, solid hydroxyl value 183-188 mgKOH / g, solid acid value 153-158 mgKOH / g, purchased from Changshu Guohe New Materials Co., Ltd.) to the mixing tank. Turn on the high-speed disperser (400 rpm) and add 20 parts of ethanol, 0.5 parts of dispersant (Lubrizol 20000), 0.5 parts of matting agent (OK-412), and 30 parts of titanium dioxide in sequence while stirring. After adding the materials, adjust the speed to 1000 rpm and stir for 30 minutes.

[0040] 3. After step 2 is completed, clean the disperser with 2 parts ethanol and transfer the disperser to the horizontal sand mill for grinding.

[0041] 4. Grind the above materials using a sand mill at a temperature not exceeding 40℃. After grinding to a fineness of less than 20 microns, clean the sand mill with 7 parts ethanol, weigh and calculate the loss, replenish the loss with ethanol, and then transfer the mill to a high-speed disperser.

[0042] 5. Under conditions where the temperature does not exceed 40℃, add 10 parts of polyketone modified rosin resin ethanol solution (solid content 50%, solid acid value 110-130mgKOH / g) to the material ground in step 4, adjust the stirring speed to 1000 rpm, stir for 15 minutes, then filter and package to obtain ethanol single solvent type acrylic resin ink.

[0043] 7. When printing, mix ink and ethanol in a ratio of 100:60-100, stir well, and then print.

[0044] Comparative Example 1

[0045] 1. The solvent is ethanol (purity above 95%, water content 0-5%).

[0046] 2、In the condition that the temperature is not more than 40℃, 30 parts of ethanol single solvent type acrylic resin GH-AAC-976 (solid content 50%, solid parts hydroxyl value 42-48 mgKOH / g, solid parts acid value 58-63 mgKOH / g, manufacturer: Changshu Guohexin Material Co., Ltd.) is added into the cylinder, the high-speed dispersion machine is started at 400 revolutions / minute, 20 parts of ethanol, 0.5 parts of dispersant (Lubrizol 20000), 0.5 parts of matting powder (OK-412), and 30 parts of titanium dioxide are sequentially added while stirring.

[0047] 3、After step 2 is completed, the dispersion machine is cleaned with 2 parts of ethanol, and the cylinder is transferred to a horizontal sand mill for grinding.

[0048] 4、In the condition that the temperature is not more than 40℃, the above-mentioned materials are ground by using the sand mill. After the fineness is ground to below 20 microns, the sand mill is cleaned with 7 parts of ethanol, the loss is calculated by weighing, the loss is supplemented with ethanol, then the cylinder is transferred to the high-speed dispersion machine, the stirring speed is adjusted to 1000 revolutions / minute, stirring for 15 minutes, then filtering and packaging to obtain ethanol single solvent type acrylic resin ink.

[0049] 5、During printing, the ink and ethanol are mixed at a ratio of 100:60-100, stirred uniformly, and then used for printing.

[0050] Comparative Example 2

[0051] 1、The solvent is ethanol (purity more than 95%, water content 0-5%).

[0052] 2、In the condition that the temperature is not more than 40℃, the alcohol-soluble polyketone resin (hydroxyl value 120 mgKOH / g) and ethanol are mixed and stirred to dissolve into polyketone resin ethanol solution (solid content 50%, solid parts hydroxyl value 120 mgKOH / g) for standby.

[0053] 3、In the condition that the temperature is not more than 40℃, the alcohol-soluble rosin resin (acid value 190-210 mgKOH / g) and ethanol are mixed and stirred to dissolve into rosin resin ethanol solution (solid content 50%, solid parts acid value 190-210 mgKOH / g) for standby.

[0054] 4、In the condition of temperature not more than 40℃, 30 parts of ethanol single solvent type acrylic resin GH-AAC-981 (solid content 50%, solid parts hydroxyl value 183-188 mgKOH / g, solid parts acid value 153-158 mgKOH / g, manufacturer: Changshu Guohexin Material Co., Ltd.) is added into the cylinder, the high-speed disperser is started at 400 rpm, 5 parts of alcohol solution of step 2, 5 parts of alcohol solution of step 3, 20 parts of ethanol, 0.5 parts of dispersant (Lubrizol 20000), 0.5 parts of flatting powder (OK-412), 30 parts of titanium white are added in turn while stirring. After the addition is completed, the speed is adjusted to 1000 rpm, and stirring is carried out for 30 minutes.

[0055] 5、After step 4 is completed, the disperser is cleaned with 2 parts of ethanol, and the cylinder is transferred to a horizontal sand mill for grinding.

[0056] 6、In the condition of temperature not more than 40℃, the above-mentioned materials are ground by sand mill. After the fineness is ground to below 20 microns, the sand mill is cleaned with 7 parts of ethanol, the loss is calculated and weighed, the loss is supplemented with ethanol, then the cylinder is transferred to a high-speed disperser, the stirring speed is adjusted to 1000 rpm, stirring is carried out for 15 minutes, then filtration and packaging are carried out to obtain ethanol single solvent type acrylic resin ink.

[0057] 7、During printing, the ink and ethanol are mixed at a ratio of 100:60-100, stirred uniformly and then used for printing.

[0058] Comparative Example 3

[0059] 1、The solvent is ethanol (purity more than 95%, water content 0-5%).

[0060] 2、In the condition of temperature not more than 40℃, 30 parts of ethanol single solvent type acrylic resin GH-AAC-981 (solid content 50%, solid parts hydroxyl value 183-188 mgKOH / g, solid parts acid value 153-158 mgKOH / g, manufacturer: Changshu Guohexin Material Co., Ltd.) is added into the cylinder, the high-speed disperser is started at 400 rpm, 10 parts of polyketone modified rosin resin ethanol solution (solid content 50%, solid parts acid value 110-130 mgKOH / g), 20 parts of ethanol, 0.5 parts of dispersant (Lubrizol 20000), 0.5 parts of flatting powder (OK-412), 30 parts of titanium white are added in turn while stirring. After the addition is completed, the speed is adjusted to 1000 rpm, and stirring is carried out for 30 minutes.

[0061] 4、After step 2 is completed, the disperser is cleaned with 2 parts of ethanol, and the cylinder is transferred to a horizontal sand mill for grinding.

[0062] 5. Under conditions where the temperature does not exceed 40℃, the above materials are ground using a sand mill. After grinding to a fineness of less than 20 microns, the sand mill is cleaned with 7 parts of ethanol, and the loss is weighed and calculated. The loss is replenished with ethanol. Then, the material is transferred to a high-speed disperser, and the stirring speed is adjusted to 1000 rpm. The mixture is stirred for 15 minutes, then filtered and packaged to obtain ethanol-based single-solvent acrylic resin ink.

[0063] 6. When using for printing, mix ink and ethanol in a ratio of 100:60-100, stir well, and then use for printing.

[0064] Comparative Example 4

[0065] 1. The solvent is ethanol (purity above 95%, water content 0-5%).

[0066] 2. Under conditions where the temperature does not exceed 40℃, mix and stir the alcohol-soluble polyketone resin (hydroxyl value 120mgKOH / g) and ethanol to dissolve it into a polyketone resin ethanol solution (solid content 50%, solid hydroxyl value 120mgKOH / g), and set aside.

[0067] 3. Under conditions where the temperature does not exceed 40℃, mix and stir the alcohol-soluble rosin resin (acid value 190-210mgKOH / g) and ethanol to dissolve it into a rosin resin ethanol solution (solid content 50%, solid content acid value 190-210mgKOH / g), and set aside for later use.

[0068] 4. Under conditions where the temperature does not exceed 40℃, add 30 parts of ethanol-based single-solvent acrylic resin GH-AAC-981 (solid content 50%, solid hydroxyl value 183-188 mgKOH / g, solid acid value 153-158 mgKOH / g, purchased from Changshu Guohe New Materials Co., Ltd.) to the mixing tank. Turn on the high-speed disperser at 400 rpm, and add 20 parts of ethanol, 0.5 parts of dispersant (Lubrizol 20000), 0.5 parts of matting agent (OK-412), and 30 parts of titanium dioxide in sequence while stirring. After adding all the materials, adjust the speed to 1000 rpm and stir for 30 minutes.

[0069] 5. After step 4 is completed, clean the disperser with 2 parts ethanol and transfer the disperser to a horizontal sand mill for grinding.

[0070] 6. Grind the above materials using a sand mill at a temperature not exceeding 40℃. After grinding to a fineness of less than 20 microns, clean the sand mill with 7 parts ethanol, weigh and calculate the loss, replenish the loss with ethanol, and then transfer the mill to a high-speed disperser.

[0071] 7、In the condition of temperature not more than 40℃, 5 parts of alcohol-soluble polyketone resin ethanol solution of step 2 and 5 parts of alcohol-soluble rosin ethanol solution of step 3 are added to the ground material of step 6, the stirring speed is adjusted to 1000 rpm, stirring for 15 minutes, then filtering and packaging to obtain ethanol single solvent type acrylic resin ink.

[0072] 8、When printing, mix according to the ratio of ink: ethanol = 100:60-100, stir evenly and then use for printing.

[0073] Comparative Example 5

[0074] 1、The solvent is ethanol (purity more than 95%, water content 0-5%).

[0075] 2、In the condition of temperature not more than 40℃, 30 parts of ethanol single solvent type acrylic resin GH-AAC-981 (solid content 50%, solid parts hydroxyl value 183-188 mgKOH / g, solid parts acid value 153-158 mgKOH / g, purchased from Changshu Guohexin Material Co., Ltd.) are added to the cylinder, the high-speed disperser is started at 400 rpm, 20 parts of ethanol, 0.5 parts of dispersant (Lubrizol 20000), 0.5 parts of matting powder (OK-412), and 30 parts of titanium dioxide are added in turn while stirring. After the addition is completed, the speed is adjusted to 1000 rpm and stirring is carried out for 30 minutes.

[0076] 3、After step 2 is completed, the disperser is cleaned with 2 parts of ethanol, and the cylinder is transferred to a horizontal sand mill for grinding.

[0077] 4、In the condition of temperature not more than 40℃, the above-mentioned materials are ground by sand mill. After grinding to a fineness of 20 microns or less, the sand mill is cleaned with 7 parts of ethanol, the loss is calculated by weighing, the loss is supplemented with ethanol, then the cylinder is transferred to a high-speed disperser, the stirring speed is adjusted to 1000 rpm, stirring for 15 minutes, then filtering and packaging to obtain ethanol single solvent type acrylic resin ink.

[0078] 5、When printing, mix according to the ratio of ink: ethanol = 100:60-100, stir evenly and then use for printing.

[0079] Ink detection:

[0080] 1、Ink fineness detection

[0081] According to the provisions of Chapter 6.2 "Ink fineness particle method (Method 2)" of GB / T 13217.3-2022 "Ink fineness test method".

[0082] 2、Ink performance detection

[0083] 1) Performance test ink sample preparation

[0084] (1) The ink of the examples and comparative examples was diluted with ethanol to adjust to the same solid content (25%).

[0085] (2) The ink with adjusted solid content was printed on a BOPP film with a surface tension of 38 dynes or more after corona treatment using a printing proofing machine to make ink sample sheets with the same wet film thickness.

[0086] (3) The ink sample sheets were blown dry with a hair dryer and used for adhesion and anti-blocking tests.

[0087] 2) Performance test items and methods

[0088] (1) Adhesion: tested according to the provisions of Chapter 5 "Manual peeling method" of GB / T 13217.7-2023 "Ink adhesion test method", with ink layer peeling less than 5% being excellent, ink layer peeling 5-10% being good, ink layer peeling 10-15% being qualified, and ink layer peeling more than 15% being unqualified.

[0089] (2) Plate solubility: the ink with a solid content of 25% was printed on a BOPP film with a surface tension of 38 dynes or more after corona treatment using a printing proofing machine, and then ethanol was quickly poured on the plate to cover the ink on the plate (note: ethanol cannot be directly poured on the ink to avoid washing away the ink), and the dissolution and dispersion of the residual ink on the plate were observed. Within 30 seconds, the ink on the deep plate (plate depth 40 microns), medium plate (plate depth 32 microns) and shallow plate (plate depth 24 microns) all dissolved and dispersed, which was excellent; 30-60 seconds was good; more than 60 seconds was poor.

[0090] (3) Anti-blocking: tested according to the provisions of GB / T 13217.8-2009 "Liquid ink anti-blocking test method", with ink layer sticking together being unqualified and ink layer not sticking together being qualified.

[0091] Table 1: Summary of performance test results

[0092]

[0093] Effects of the present application: After the ink is ground, the addition of the polyketone modified rosin resin ethanol solution (prepared by reacting alcohol-soluble polyketone resin and alcohol-soluble rosin) can effectively improve the plate solubility of the ink and solve the problems of plate blocking and poor printing during printing. Figs. 1-3As shown in the effect comparison chart, simply increasing the alcohol solubility of the resin by increasing the hydroxyl value and acid value of the acrylic resin (Comparative Example 5) cannot solve the problem of poor ink solubility. Using alcohol-soluble polyketone resin and alcohol-soluble rosin resin (Comparative Examples 2 and 4) can improve the adhesion of the ink, but cannot improve the ink solubility. Before grinding the ink, adding the self-made polyketone modified rosin resin ethanol solution together for grinding (Comparative Example 3) also improves the adhesion of the ink, but does not improve the ink solubility.

Claims

1. A method for improving the ink solubility of an ethanol single-solvent acrylic resin, characterized in that, It comprises the following steps: (1) ethanol, ethanol single solvent type acrylic resin, dispersant, titanium dioxide and flatting powder are dispersed and mixed, then the dispersed materials are ground to obtain the ground ink; (2) the ethanol solution of polyketone modified rosin resin is added to the ground ink and dispersed and mixed, and the ethanol single solvent type acrylic resin ink is obtained after filtering the material; The weight parts of each raw material are as follows: ethanol 20-35 parts, ethanol single solvent type acrylic resin 30-45 parts, dispersant 0.5-4 parts, titanium dioxide 30-45 parts, flatting powder 0.2-2 parts, and ethanol solution of polyketone modified rosin resin 5-15 parts. The preparation method of the ethanol solution of polyketone modified rosin resin comprises: heating reaction of alcohol soluble polyketone resin, alcohol soluble rosin and catalyst zinc oxide, cooling to 80-90℃ after reaction, adding ethanol, stirring and dissolving at 75-85℃, cooling to below 50℃, removing insoluble substances by filtration, and obtaining the ethanol solution of polyketone modified rosin resin; wherein the hydroxyl value of the polyketone resin is 120 mg KOH / g.

2. The method for improving the single solvent type acrylic resin ink processability of ethanol according to claim 1, characterized in that, In step (1), each material is added to the cylinder of a high-speed disperser for dispersion and mixing, and the rotation speed is controlled at 1000-1200 rpm after mixing for 30-40 minutes of pre-dispersion.

3. The method for improving the single solvent type acrylic resin ink processability of ethanol according to claim 1, characterized in that, The grinding fineness in step (1) is controlled below 20 microns.

4. The method for improving the single solvent type acrylic resin ink processability of ethanol according to claim 1, characterized in that, The rotation speed in step (2) is controlled at 1000-1200 rpm during mixing, and the dispersion time is 15-20 minutes.

5. The method of improving the single solvent type acrylic resin ink processability of ethanol according to claim 1, characterized in that, The ethanol single solvent type acrylic resin ink is diluted with ethanol at a ratio of 100:60-100, stirred uniformly, and used for printing.

6. The method of improving the single solvent type acrylic resin ink processability of ethanol according to claim 1, characterized in that, The solid content of the obtained ethanol solution of polyketone modified rosin resin is 50%, and the solid content acid value is 110-130 mg KOH / g.

7. The method for improving the single solvent type acrylic ink solubility of ethanol according to claim 1, wherein, The weight parts of each raw material are as follows: alcohol soluble polyketone resin 25-35 parts, alcohol soluble rosin 80-120 parts, and catalyst zinc oxide 0.1-0.3 parts.

8. The method of improving the single solvent type acrylic resin ink processability of ethanol according to claim 1, characterized in that, The reaction temperature is 220-250℃, and the reaction time is 4-6 hours.

Images