Chlorinated polypropylene modified water-based acrylic resin with high adhesive force and water resistance and preparation method of chlorinated polypropylene modified water-based acrylic resin

Abstract

The invention discloses chlorinated polypropylene modified water-based acrylic resin with high adhesive force and water resistance and a preparation method of the chlorinated polypropylene modified water-based acrylic resin. The chlorinated polypropylene modified water-based acrylic resin is prepared from the following components in percentage by mass: 5-15% of chlorinated polypropylene, 20-30% of methyl methacrylate, 5-10% of isobornyl acrylate, 10-15% of methoxy polyethylene glycol monomethacrylate, 3-5% of acrylic acid, 0.5-1.5% of an initiator and 2-5% of hydroxyethyl acrylate. The cleaning agent is prepared from the following components in percentage by weight: 20-40% of triethanolamine, 3-8% of triethanolamine, 5-10% of acetone, 20-40% of sec-butyl acetate and 1-5% of deionized water. The optimal raw material composition and proportion are screened through a large number of experiments, the optimal synthesis process is preferably obtained through a large number of experiments, the conversion rate reaches up to 99%, and the solid content of the resin reaches 65% or above. The chlorinated polypropylene modified water-based acrylic resin with high adhesive force and water resistance has the advantages of excellent adhesive force, water resistance, storage stability and the like, and has a very good technical effect in comprehensive performance.

Description

Technical Field

[0001] This invention relates to a chlorinated polypropylene modified waterborne acrylic resin with high adhesion and water resistance, specifically to a high-performance, easily applicable chlorinated polypropylene modified waterborne acrylic resin and its preparation method, belonging to the field of polymer resin technology. Background Technology

[0002] Polypropylene materials suffer from poor adhesion in traditional coatings due to their low surface energy and weak polarity. Current technologies often use solvent-based chlorinated polypropylene as an adhesion promoter, but this presents the problem of volatile organic compound (VOC) pollution. Water-based coatings have become increasingly popular in recent years, but water-based chlorinated polypropylene has poor compatibility with acrylic resins, resulting in insufficient emulsion stability and poor water resistance. Furthermore, insufficient interlayer adhesion between the primer and topcoat is also a technical challenge.

[0003] This invention provides a method for preparing a chlorinated polypropylene modified waterborne acrylic resin with high adhesion and water resistance through raw material and process screening. Summary of the Invention

[0004] Purpose of the invention: The purpose of this invention is to address the shortcomings of existing technologies by optimizing the composition of acrylic resin monomers and initiator and their specific dosage ratios to obtain a chlorinated polypropylene modified waterborne acrylic resin with high conversion rate and excellent comprehensive properties such as adhesion and water resistance.

[0005] The chlorinated polypropylene modified waterborne acrylic resin of this invention has the following advantages: (1) Environmentally friendly solvents were used, which met the national environmental protection requirements and also protected the personal safety of producers and users.

[0006] (2) Introduce polar monomers through grafting to enhance adhesion.

[0007] (3) Adding compatible functional monomers improves resin compatibility.

[0008] (4) Hybrid dispersion design to improve storage stability.

[0009] Chlorinated polypropylene modified waterborne acrylic resin has better adhesion and water resistance than polypropylene coatings.

[0010] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A chlorinated polypropylene modified waterborne acrylic resin with high adhesion and water resistance is made from the following raw materials: chlorinated polypropylene, methyl methacrylate, isoborneol acrylate, methoxy polyethylene glycol monomethyl acrylate, acrylic acid, hydroxyethyl acrylate, initiator, triethanolamine, acetone, sec-butyl acetate, and deionized water.

[0011] As a preferred embodiment, the above-described chlorinated polypropylene modified waterborne acrylic resin with high adhesion and water resistance is made from the following raw materials in the indicated weight percentages: 5-15% chlorinated polypropylene, 20-30% methyl methacrylate, 5-10% isoborneol acrylate, 10-15% methoxy polyethylene glycol monomethacrylate, 3-5% acrylic acid, 0.5-1.5% initiator, 2-5% hydroxyethyl acrylate, 3-8% triethanolamine, 5-10% acetone, 20-40% sec-butyl acetate, and 1-5% deionized water.

[0012] As a preferred embodiment, the above-described high-adhesion and water-resistant chlorinated polypropylene modified waterborne acrylic resin is made from the following raw materials in the indicated weight percentages: 10% chlorinated polypropylene, 25% methyl methacrylate, 8% isoborneol acrylate, 12% methoxy polyethylene glycol monomethyl acrylate, 4% acrylic acid, 1% initiator, 3% hydroxyethyl acrylate, 5% triethanolamine, 25% sec-butyl acetate, 6% acetone, and 1% deionized water.

[0013] As a preferred embodiment, the chlorinated polypropylene modified waterborne acrylic resin with high adhesion and water resistance described above uses benzoyl peroxide as the initiator.

[0014] The preparation method of the chlorinated polypropylene modified waterborne acrylic resin of the present invention includes the following steps: (1) Add chlorinated polypropylene, acetone and part of sec-butyl acetate to a four-necked flask and heat until dissolved; (2) Mix methyl methacrylate, isobornyl acrylate, methoxy polyethylene glycol monomethacrylate, acrylic acid, hydroxyethyl acrylate and part of the initiator evenly according to the mass percentage, and add them to the dropping pump; (3) After the temperature of the four-necked flask in step (1) is reached, keep it warm and start adding the mixture from step (2) dropwise. After the mixture is added, keep it warm for a period of time. (4) Add the remaining sec-butyl acetate and part of the initiator to the dropping pump; (5) When the heat preservation in step (3) is completed, start to add the mixture in step (4). After the addition is completed, keep it warm for a period of time, then add the initiator, keep it warm for a period of time, cool it down, add triethanolamine and deionized water and stir to obtain the final product.

[0015] As a preferred embodiment, in the preparation method of the chlorinated polypropylene modified waterborne acrylic resin described above, the temperature in step (1) is controlled at 80-100℃.

[0016] As a preferred embodiment, in the preparation method of the chlorinated polypropylene modified waterborne acrylic resin described above, the initiator is benzoyl peroxide.

[0017] As a preferred embodiment, in the above-described method for preparing chlorinated polypropylene modified waterborne acrylic resin, in step (3), when the temperature of the four-necked flask in step (1) reaches the controlled temperature of 80-100℃, the mixture in step (2) is added dropwise, and the addition is completed in 5 hours. After the addition is completed, the mixture is kept warm for 1 hour.

[0018] As a preferred embodiment, in the above-described method for preparing chlorinated polypropylene modified waterborne acrylic resin, in step (5), after the heat preservation in step (3) is completed, the mixture in step (4) is added dropwise, and the dropwise addition is completed in 0.5 hours. After the dropwise addition is completed, the mixture is kept warm for 1 hour, and then an initiator is added. The mixture is kept warm for 2 hours, and then the temperature is lowered to 50°C. Triethanolamine and deionized water are added, and the mixture is stirred for 1 hour to obtain the final product.

[0019] Beneficial effects: Compared with the prior art, the present invention has the following advantages: This invention, through extensive experimental screening, optimizes and adjusts the composition and optimal dosage ratio of the acrylic resin monomer and initiator system. In resin synthesis, hydroxyethyl acrylate and acrylic acid are added via graft copolymerization, which increases the resin's adhesion. The addition of the compatibility functional monomer methoxy polyethylene glycol monomethacrylate improves the resin's compatibility. The hybrid dispersion system enhances the resin's storage stability.

[0020] Furthermore, this invention uses benzoyl peroxide as an initiator. By adding the initiator and maintaining the temperature again at a reaction temperature of 80℃-100℃, the resin achieves a high conversion rate, reaching 99%. The suitable reaction temperature and dropping time allow the resin molecular weight to be controlled at a high level without affecting the resin's film-forming properties. The higher molecular weight results in a higher viscosity of the resin system, enabling the preparation of high-solids resins. The resin of this invention has a solid content of over 65%.

[0021] The chlorinated polypropylene modified waterborne acrylic resin of this invention has a suitable viscosity, and the coating film has comprehensive properties such as high adhesion, high water resistance and storage stability, making it suitable for environmentally friendly coatings in the automotive, electronics and other fields. Detailed Implementation

[0022] Example 1 1. A chlorinated polypropylene modified waterborne acrylic resin with high adhesion and water resistance, which is made from the following raw materials in the indicated weight percentages: 10% chlorinated polypropylene, 25% methyl methacrylate, 8% isoborneol acrylate, 12% methoxy polyethylene glycol monomethyl acrylate, 4% acrylic acid, 1% benzoyl peroxide, 3% hydroxyethyl acrylate, 5% triethanolamine, 25% sec-butyl acetate, 6% acetone, and 1% deionized water.

[0023] 2. A method for preparing a chlorinated polypropylene-modified waterborne acrylic resin with high adhesion and water resistance, comprising the following steps: (1) Add a measured amount of 140 g of sec-butyl acetate, 36 g of acetone and 60 g of chlorinated polypropylene to a four-necked flask, heat to 80-100℃ to dissolve, and keep warm for 0.5 hours; (2) Mix 150g of methyl methacrylate, 48g of isoborneol acrylate, 72g of methoxy polyethylene glycol monomethacrylate, 24g of acrylic acid, 18g of hydroxyethyl acrylate and 5g of benzoyl peroxide evenly and add them to the drop pump. (3) When the temperature of the four-necked flask in step (1) reaches the controlled temperature of 80-100℃, keep it warm for 0.5 hours, and start adding the mixture in step (2). The addition is completed in 5 hours, and then keep it warm for 1 hour. (4) Add a measured amount of 10 g of sec-butyl acetate and 0.5 g of benzoyl peroxide to the drop pump; (5) When the heat preservation in step (3) is finished, start to add the mixture in step (4) dropwise. The mixture is added in 0.5 hours. After the addition is finished, keep it warm for 1 hour. Then add 0.5 g of benzoyl peroxide, keep it warm for 2 hours, then cool it down to 50°C, add 30 g of triethanolamine and 6 g of deionized water and stir for 1 hour to obtain the final product.

[0024] The final resin had a solid content of 67.1% and a viscosity of 9500 mPa·s (rotational viscosity / 25℃). The conversion rate was 99.1% (67.1% resin solid content divided by the theoretical solid content of 67.7%).

[0025] The resin obtained in Example 1 was mixed according to the proportions of the ingredients in Table 1 below, and baked at 80°C for 20 minutes to prepare a water-based acrylic resin primer with a film thickness of 20 μm. The performance is shown in Table 2.

[0026] Table 1. Formulation composition of water-based acrylic resin paint Raw material name Weight (g) Example 1: Chlorinated polypropylene modified waterborne acrylic resin 60 Deionized water 30 wetting agent BYK-345 0.5 Defoamer BYK-024 0.2 Silane coupling agent KH-550 2 ammonia 9

[0027] Table 2. Results of Resin and Coating Film Performance Tests Appearance Clear, flat, and free of particles Water resistance (48 hours) No bubbling or peeling Adhesion (cross-cut test) Level 0 Storage stability (6 months) There were no significant changes in viscosity, pH value, and coating properties.

[0028] Among them, water resistance was determined according to GB / T1733-1993 Test Method for Water Resistance of Paint Film; adhesion (cross-cut test) was determined according to GB / T9286-1998 Cross-cut Test for Paint and Varnish Film; storage stability was determined according to HG / T4758-20144 Waterborne Acrylic Resin Coatings.

[0029] Comparative Example 1 A method for preparing chlorinated polypropylene modified waterborne acrylic resin includes the following steps: (1) Add 140 g of sec-butyl acetate, 36 g of acetone and 60 g of chlorinated polypropylene to a four-necked flask, heat to 80-100℃ to dissolve, and keep warm for 0.5 hours; (2) Mix 150g of methyl methacrylate, 48g of isoborneol acrylate, 72g of methoxy polyethylene glycol monomethacrylate, 24g of acrylic acid, 18g of butyl acrylate and 5g of benzoyl peroxide evenly and add them to the drop pump. (3) When the temperature of the four-necked flask in step (1) reaches the controlled temperature of 80-100℃, keep it warm for 0.5 hours, start adding the mixture in step (2), finish adding it in 5 hours, and keep it warm for 1 hour after finishing adding it. (4) Add a measured amount of 10 g of sec-butyl acetate and 0.5 g of benzoyl peroxide to the drop pump; (5) When the heat preservation in step (3) is completed, start adding the mixture in step (4) dropwise. The mixture is added in 0.5 hours. After the addition is completed, keep it warm for 1 hour. Then add 0.5 g of benzoyl peroxide, keep it warm for 2 hours, and then cool it down to 50°C. Add 30 g of triethanolamine and 6 g of deionized water and stir for 1 hour to obtain the final product.

[0030] The final resin had a solid content of 66.8% and a viscosity of 7200 mPa·s (rotational viscosity / 25℃). The conversion rate was 98.6% (66.8% resin solid content divided by the theoretical solid content of 67.7%).

[0031] The resin obtained in Comparative Example 1 was mixed with the various ingredients listed in Table 3 below in the specified proportions, and then baked at 80°C for 20 minutes to prepare a water-based acrylic resin primer with a film thickness of 20 μm. The performance tests are shown in Table 4.

[0032] Table 3. Composition of Acrylic Resin Paint Formulation Raw material name Weight (g) Comparative Example 1 Resin 60 Deionized water 30 wetting agent BYK-345 0.5 Defoamer BYK-024 0.2 Silane coupling agent KH-550 2 ammonia 9

[0033] Table 4. Results of Resin and Coating Film Performance Tests Appearance Clear, flat, and free of particles Water resistance (48 hours) No bubbling or peeling Adhesion (cross-cut test) Level 2 Storage stability (6 months) There were no significant changes in viscosity, pH value, and coating properties.

[0034] Among them, water resistance was determined according to GB / T1733-1993 Test Method for Water Resistance of Paint Film; adhesion (cross-cut test) was determined according to GB / T9286-1998 Cross-cut Test for Paint and Varnish Film; storage stability was determined according to HG / T4758-20144 Waterborne Acrylic Resin Coatings.

[0035] As can be seen from the comparison of the components of Example 1 and Comparative Example 1, Comparative Example 1 adjusted the resin based on Example 1, replacing hydroxyethyl acrylate with butyl acrylate. From the adhesion results, the content of polar monomers in the resin has a significant impact on the adhesion of the resin.

[0036] Comparative Example 2 A method for preparing chlorinated polypropylene modified waterborne acrylic resin includes the following steps: (1) Add 140 g of sec-butyl acetate, 36 g of acetone and 60 g of chlorinated polypropylene to a four-necked flask, heat to 80-100℃ to dissolve, and keep warm for 0.5 hours; (2) Mix 150g of methyl methacrylate, 48g of isooctyl acrylate, 72g of methoxy polyethylene glycol monomethacrylate, 24g of acrylic acid, 18g of hydroxyethyl acrylate and 5g of benzoyl peroxide evenly and add them to the drop pump. (3) When the temperature of the four-necked flask in step (1) reaches the controlled temperature of 80-100℃, keep it warm for 0.5 hours, start adding the mixture in step (2), finish adding it in 5 hours, and keep it warm for 1 hour after finishing adding it. (4) Add a measured amount of 10 g of sec-butyl acetate and 0.5 g of benzoyl peroxide to the drop pump; (5) When the heat preservation in step (3) is finished, start to add the mixture in step (4) dropwise. The mixture is added in 0.5 hours. After the addition is finished, keep it warm for 1 hour. Then add 0.5 g of benzoyl peroxide, keep it warm for 2 hours, then cool it down to 50°C, add 30 g of triethanolamine and 6 g of deionized water, and stir for 1 hour to obtain the final product.

[0037] The final resin had a solid content of 67% and a viscosity of 8000 mPa·s (rotational viscosity / 25℃). The conversion rate was 98.9% (67% resin solid content divided by the theoretical solid content of 67.7%).

[0038] The resin obtained in Comparative Example 2 was mixed with the various ingredients listed in Table 5 below in the specified proportions, and then baked at 80°C for 20 minutes to prepare a water-based acrylic resin primer with a film thickness of 20 μm. The performance tests are shown in Table 6.

[0039] Table 5. Composition of Acrylic Resin Paint Formulation Raw material name Weight (g) Comparative Example 2 Resin 60 Deionized water 30 wetting agent BYK-345 0.5 Defoamer BYK-024 0.2 Silane coupling agent KH-550 2 ammonia 9

[0040] Table 6. Test results of resin and coating properties Appearance Turbid, smooth, and free of particles Water resistance (48 hours) No bubbling or peeling Adhesion (cross-cut test) Level 0 Storage stability (6 months) There were no significant changes in viscosity, pH value, and coating properties.

[0041] Among them, water resistance was determined according to GB / T1733-1993 Test Method for Water Resistance of Paint Film; adhesion (cross-cut test) was determined according to GB / T9286-1998 Cross-cut Test for Paint and Varnish Film; storage stability was determined according to HG / T4758-20144 Waterborne Acrylic Resin Coatings.

[0042] As can be seen from the comparison of the components in Example 1 and Comparative Example 2, the present invention uses a specific solvent and methyl methacrylate, acrylic acid, chlorinated polypropylene, and triethanolamine. Comparative Example 2, based on Example 1, adjusted the resin by replacing isobornyl acrylate with isooctyl acrylate. Table 6 shows the resin and paint film performance test results, indicating that the resin paint film is cloudy, suggesting that isobornyl acrylate containing nonionic segments has a significant impact on the compatibility of chlorinated polypropylene and waterborne acrylic resin.

[0043] Comparative Example 3 A method for preparing chlorinated polypropylene modified waterborne acrylic resin includes the following steps: (1) Add a measured amount of 140 g of sec-butyl acetate, 36 g of acetone and 60 g of chlorinated polypropylene to a four-necked flask, heat to 110-120℃ to dissolve, and keep warm for 0.5 hours; (2) Mix 150g of methyl methacrylate, 48g of isoborneol acrylate, 72g of methoxy polyethylene glycol monomethacrylate, 24g of acrylic acid, 18g of hydroxyethyl acrylate and 5g of benzoyl peroxide evenly and add them to the drop pump. (3) When the temperature of the four-necked flask in step (1) reaches the controlled temperature of 110-120℃, keep it warm for 0.5 hours, and start adding the mixture in step (2) dropwise. The addition is completed in 5 hours, and then the mixture is kept warm for 1 hour. (4) Add a measured amount of 10 g of sec-butyl acetate and 0.5 g of benzoyl peroxide to the drop pump; (5) When the heat preservation in step (3) is finished, start to add the mixture in step (4) dropwise. The mixture is added in 0.5 hours. After the addition is finished, keep it warm for 1 hour. Then add 0.5 g of benzoyl peroxide, keep it warm for 2 hours, then cool it down to 50°C, add 30 g of triethanolamine and 6 g of deionized water and stir for 1 hour to obtain the final product.

[0044] The final resin had a solid content of 55.6% and a viscosity of 4600 mPa·s (rotational viscosity / 25℃). The conversion rate was 82.1% (55.6% resin solid content divided by the theoretical solid content of 67.7%).

[0045] Comparative Example 4 A method for preparing chlorinated polypropylene modified waterborne acrylic resin includes the following steps: (1) Add a measured amount of 140 g of sec-butyl acetate, 36 g of acetone and 60 g of chlorinated polypropylene to a four-necked flask, heat to 80-100℃ to dissolve, and keep warm for 0.5 hours; (2) Mix 150g of methyl methacrylate, 48g of isoborneol acrylate, 72g of methoxy polyethylene glycol monomethacrylate, 24g of acrylic acid, 18g of hydroxyethyl acrylate and 5g of tert-butyl peroxide evenly and add them to the drop pump. (3) When the temperature of the four-necked flask in step (1) reaches the controlled temperature of 80-100℃, keep it warm for 0.5 hours, and start adding the mixture in step (2). The addition is completed in 5 hours, and then keep it warm for 1 hour. (4) Add 10 g of sec-butyl acetate and 0.5 g of tert-butyl peroxide to the drip pump; (5) When the heat preservation in step (3) is finished, start to add the mixture in step (4) dropwise. The dropwise addition is completed in 0.5 hours. After the dropwise addition is completed, heat preservation is carried out for 1 hour. Then, add 0.5 g of tert-butyl peroxide, heat preservation is carried out for 2 hours, and then the temperature is lowered to 50°C. Add 30 g of triethanolamine and 6 g of deionized water and stir for 1 hour to obtain the final product.

[0046] The final resin had a solid content of 53.8% and a viscosity of 3700 mPa·s (rotational viscosity / 25℃). The conversion rate was 79.4% (53.8% resin solid content divided by the theoretical solid content of 67.7%). A comparison of the components in Example 1 and Comparative Examples 3 and 4 shows that the present invention uses a specific solvent and methyl methacrylate, acrylic acid, chlorinated polypropylene, and triethanolamine. Comparative Example 3, based on Example 1, increased the resin reaction temperature by 110-120°C, resulting in a decrease in its conversion rate. Comparative Example 4, based on Example 1, changed the resin initiator, replacing benzoyl peroxide with tert-butyl peroxide, further decreasing its conversion rate. In conclusion, selecting a suitable initiator and reaction temperature plays a decisive role in improving the resin conversion rate.

[0047] Based on Example 1 and Comparative Examples 1, 2, 3, and 4, the introduction of polar monomers through graft copolymerization can enhance the adhesion of the resin. The addition of isobornyl acrylate containing nonionic segments can improve the compatibility of the resin. Appropriate initiators and reaction temperatures can improve the conversion rate of the resin.

[0048] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A chlorinated polypropylene-modified water-based acrylic resin having high adhesion and water resistance, characterized by, It is made of the following raw materials: chlorinated polypropylene, methyl methacrylate, isobornyl acrylate, methoxy polyethylene glycol monomethacrylate, acrylic acid, hydroxyethyl acrylate, initiator, triethanolamine, acetone, sec-butyl acetate, deionized water.

2. The chlorinated polypropylene modified water-based acrylic resin with high adhesion and water resistance according to claim 1, characterized in that, It is made of the following raw materials: chlorinated polypropylene, methyl methacrylate, isobornyl acrylate, methoxy polyethylene glycol monomethacrylate, acrylic acid, hydroxyethyl acrylate, initiator, triethanolamine, acetone, sec-butyl acetate, deionized water.

3. The chlorinated polypropylene modified water-based acrylic resin with high adhesion and water resistance according to claim 1, characterized in that, It is made of the following raw materials: chlorinated polypropylene, methyl methacrylate, isobornyl acrylate, methoxy polyethylene glycol monomethacrylate, acrylic acid, hydroxyethyl acrylate, initiator, triethanolamine, acetone, sec-butyl acetate, deionized water.

4. The high-adhesion and water-resistant chlorinated polypropylene modified waterborne acrylic resin according to any one of claims 1-3, characterized in that, The initiator is benzoyl peroxide.

5. A process for preparing a high adhesion and water resistant chlorinated polypropylene modified waterborne acrylic resin as claimed in any one of claims 1 to 3, characterized by, It includes the following steps: (1) Add chlorinated polypropylene, acetone and part of sec-butyl acetate into a four-necked flask and heat to dissolve; (2) Mix methyl methacrylate, isobornyl acrylate, methoxy polyethylene glycol monomethacrylate, acrylic acid, hydroxyethyl acrylate and part of initiator according to the mass percentage and add them into a dropping pump; (3) When the temperature of the four-necked flask in step (1) reaches the control temperature, start dropping the mixture in step (2) after keeping warm, and keep warm for a period of time after dropping; (4) Add the remaining sec-butyl acetate and part of initiator into the dropping pump; (5) When the keeping warm in step (3) is finished, start dropping the mixture in step (4), keep warm for a period of time after dropping, then add initiator, keep warm for a period of time, cool down, add triethanolamine and deionized water and stir to obtain the product.

6. The method of claim 5, wherein the chlorinated polypropylene-modified water-based acrylic resin has high adhesion and water resistance. The heating temperature in step (1) is 80-100℃.

7. The method of claim 5, wherein the chlorinated polypropylene-modified water-based acrylic resin has high adhesion and water resistance. In step (3), when the temperature of the four-necked flask in step (1) reaches the control temperature of 80-100℃, keep warm for 0.5 hours, then start dropping the mixture in step (2), drop for 5 hours, and keep warm for 1 hour after dropping.

8. The method of claim 5, wherein the chlorinated polypropylene-modified water-based acrylic resin has high adhesion and water resistance. In step (5), when the keeping warm in step (3) is finished, start dropping the mixture in step (4), drop for 0.5 hours, keep warm for 1 hour after dropping, then add a portion of initiator, keep warm for 2 hours, cool down to 50℃, add triethanolamine and deionized water and stir for 1 hour to obtain the product.

9. The method of claim 5, wherein the chlorinated polypropylene-modified water-based acrylic resin has high adhesion and water resistance. The initiator is benzoyl peroxide.

10. An aqueous acrylic resin paint, characterized by, It is made of the following raw materials: The high-adhesion and water-resistant chlorinated polypropylene modified water-based acrylic resin prepared by the method of any one of claims 5-9, deionized water 30 parts, wetting agent BYK-345 0.5 parts, defoaming agent BYK-024 0.2 parts, silane coupling agent KH-550 2 parts, ammonia 9 parts.