Toy high-hardness anti-sticking single-component rigid latex paint as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of coatings, and particularly relates to high-hardness anti-sticking single-component rigid latex paint for toys and a preparation method and application of the high-hardness anti-sticking single-component rigid latex paint for toys, the high-hardness anti-sticking single-component rigid latex paint for toys comprises varnish, and the varnish comprises the following components in parts by weight: 28-42 parts of acrylic resin with a high Tg value; 10 to 15 parts of acrylic resin; 5 to 10 parts of CAB resin; 3-8 parts of chlorinated polyether resin; 20 to 25 parts of butyl acetate; 3-6 parts of mixed propyl alcohol; 3-7 parts of ethylene glycol butyl ether; 3-6 parts of anti-settling slurry; 2-4 parts of a plasticizer; and 0.2 to 0.5 part of a leveling agent. The rigid latex paint disclosed by the invention has the effects of improving the hardness and dryness of a paint film and the anti-sticking packaging bag performance of the paint film on the premise of ensuring excellent adhesive force of the rigid latex paint and no cracking of the paint film.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of paint, and particularly relates to a high-hardness anti-sticking single-component hard gel paint for toys and a preparation method and application thereof. BACKGROUND

[0002] In toy products, toys decorated and protected by hard gel surface oil matched with hard gel substrate account for a large part. Scratching, color bleeding and various contaminations in the process of packaging and transportation of finished toys will affect the appearance and performance of the toys. Therefore, in order to reduce the phenomenon of scratching, color bleeding and contamination of finished toys in the process of packaging and transportation, toy manufacturers will use PP, PE or EVA film bags as inner packaging to protect the toys before packaging and transportation. However, the inner packaging film will adhere to the surface of the toys sprayed with ordinary conventional single-component hard gel paint in a long-time and high-temperature transportation environment. In particular, the temperature in the container during transportation to the European and American markets is as high as about 57 DEG C. The higher the temperature, the more likely the film is to stick to the packaging bag. The packaging film adheres to the surface of the toys sprayed with ordinary conventional single-component hard gel paint to form different sticking marks, which seriously affects the appearance and aesthetics of the toys.

[0003] In the past, hard gel toys had anti-sticking performance requirements. In particular, high-end toys exported to the European and American markets used sprayed two-component hard gel toy paint. However, the two-component hard gel paint has a high cost, high construction supporting environment requirement and relatively complex construction compared with the single-component hard gel paint. Therefore, how to provide a high-hardness anti-sticking single-component hard gel paint for toys under the premise of ensuring excellent adhesion of the hard gel paint to the hard gel substrate has become a technical problem to be solved in the toy paint industry. SUMMARY

[0004] The present application provides a high-hardness anti-sticking single-component hard gel paint for toys and a preparation method and application thereof. The present application improves the hardness, dryness and anti-sticking performance of the paint film by regulating the components under the premise of ensuring excellent adhesion of the hard gel paint and non-bursting of the paint film.

[0005] The technical scheme adopted by the present application to solve the above problems is as follows:

[0006] A high-hardness anti-sticking single-component hard gel paint for toys comprises a varnish, and the varnish comprises the following components in parts by weight: high-Tg value acrylic resin 28-42 parts; acrylic resin 10-15 parts; CAB resin 5-10 parts; chloroether resin 3-8 parts; butyl acetate 20-25 parts; mixed propyl alcohol 3-6 parts; ethylene glycol butyl ether 3-7 parts; anti-settling slurry 3-6 parts; plasticizer 2-4 parts; and leveling agent 0.2-0.5 parts.

[0007] Through the technical scheme, the components in the formula of the present application synergize with each other to improve the hardness, dryness and anti-sticking performance of the paint film while ensuring excellent adhesion of the hard paint and no paint film bursting.

[0008] Further, the high-Tg-value acrylic resin has a Tg≥95℃ and a solid content of 50±2%.

[0009] Through the technical scheme, the high-Tg-value acrylic resin has good adhesion on the hard gel substrate, can improve the hardness and toughness of the paint film, reduce the diffusion of the plasticizer in the paint film, limit the migration of the plasticizer to the surface of the paint film, and thus improve the anti-bag-sticking performance of the hard paint.

[0010] Further, the acrylic resin includes Mitsubishi thermoplastic solid acrylic resin BR-113, the CAB resin includes Eastman CAB-381-2, and the chloroether resin includes BASF Laroflex MP-45 solid resin.

[0011] Through the technical scheme, the thermoplastic solid acrylic resin BR-113 has good adhesion on the hard gel substrate and good compatibility in the formula of the present application, which can improve the weather resistance, gloss retention and color retention of the hard paint. The CAB resin has good release performance in the formula of the present application, which can improve the quick-drying property of the hard paint and the anti-bag-sticking performance of the hard paint. The chloroether resin has good adhesion on the hard gel substrate and good compatibility with other components in the formula of the present application, which can improve the flexibility of the hard paint and the anti-bursting performance of the paint film.

[0012] Further, the anti-settling slurry is fumed silica wrapped by an alkyd resin, the mass ratio of the alkyd resin to the fumed silica is 10:1, the alkyd resin is Jiangmen Coatings PJ330-70 benzene-free modified alkyd resin, and the fumed silica is Cabot CABOT M-5 fumed silica.

[0013] Through the technical scheme, the anti-settling slurry can improve the problems of stratification, precipitation and paint color floating in the formula of the present application, and can improve the anti-flowing and anti-wire-drawing performance of the paint during construction.

[0014] Further, the plasticizer includes BASF DINCH environmentally friendly plasticizer.

[0015] Through the technical scheme, the plasticizer can further improve the flexibility of the paint film, and the combination of the plasticizer with the high-Tg-value acrylic resin and the chloroether resin enables the entire paint film to have high hardness, anti-bag-sticking performance and certain toughness, so that the paint film is less likely to burst.

[0016] Further, the leveling agent includes any one of a polyether-modified polysiloxane leveling agent and a polydimethylsiloxane leveling agent.

[0017] Through the technical scheme, the leveling agent used in the application has good water and oil resistance and leveling effect, has good compatibility with each component, can improve the flatness and uniformity of the coating surface, reduces the surface tension, reduces bubbles and defects, and can improve the scratch resistance, gloss and curing speed of the coating.

[0018] Further, the hard gel paint further includes butyl acetate 1-8 parts and a colorant, and the mass ratio of the varnish to the colorant is 100:(2-70), and the colorant includes at least one of a color paste (oil type), silver powder, pearl powder, fluorescent powder and matte powder.

[0019] Through the technical scheme, the color of the paint film can be more colorful, and the toy can be adapted to different toys to improve the aesthetic degree of the toy. Since the colorant has different requirements for hiding power on different color paint films and hard gel substrates, the proportion can be adjusted as needed, and the types are not particularly limited.

[0020] The application provides a preparation method of a varnish of a single-component hard gel paint with high hardness and anti-sticking for toys.

[0021] S1. In a container, high-Tg-value acrylic resin and part of butyl acetate are added and stirred at 600-800 rpm for 3-5 min to obtain material body 1;

[0022] S2. In the material body 1, acrylic resin, CAB resin and chloroether resin are sequentially added while stirring, and the stirring speed is adjusted to 600-1000 rpm for 30-45 min until the cleanliness is greater than or equal to 7H / A, to obtain material body 2;

[0023] S3. In the material body 2, mixed propanol, anti-settling paste, plasticizer, leveling agent and ethylene glycol butyl ether are sequentially added while stirring, and the stirring speed is adjusted to 600-800 rpm for 15-20 min to obtain material body 3;

[0024] S4. In the material body 3, a sample is taken, and when the cleanliness is greater than or equal to 7H / A, the remaining butyl acetate is added to adjust the viscosity to 115±2 KU to obtain the varnish.

[0025] Further, in step S3, the anti-settling slurry is alcohol acid resin dispersed wrapped fumed silica, the mass ratio of alcohol acid resin to fumed silica is 10:1, after the alcohol acid resin and fumed silica are uniformly stirred and then passed through a sand mill, the grinding is performed to a cleanliness of ≥7H / A, and the anti-settling slurry is obtained.

[0026] The application further provides a preparation method of a color paint of a high-hardness anti-sticking single-component hard gel paint for toys, comprising the following steps:

[0027] A1. In the varnish, the colorant is added, stirring is performed at 500-800 rpm for 5-10 min, butyl acetate is further added to adjust the viscosity to 115±2 KU, and the color paint is obtained.

[0028] The application provides application of the above-mentioned high-hardness anti-sticking single-component hard gel paint for toys to hard gel substrate toys, for example, spraying the hard gel substrate toys with the paint.

[0029] The application has the following beneficial effects:

[0030] The high-hardness anti-sticking single-component hard gel paint for toys provided by the application improves the hardness, dryness and anti-sticking (anti-sticking packaging bag) performance of the paint film through the synergy between different components under the condition of ensuring excellent adhesion and non-bursting of the paint film, so that the toys are not easily adhered to the surface of the toys during the process of packaging and transportation with a film bag, the sticking marks of the toys are reduced, and the appearance and aesthetics of the toys are improved. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and technical advantages of the application clearer, specific examples will be described in detail below, but the protection scope of the application is not limited to the following specific examples, and the described examples are only a part of the examples of the application, rather than all the examples, and are not a limitation on the application. Based on the examples in the application, all other examples obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0032] Unless otherwise defined, all the professional terms used below have the same meaning as generally understood by those skilled in the art. The professional terms used in the present application are only for the purpose of describing specific examples, and are not intended to limit the protection scope of the application.

[0033] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the application can be purchased from the market or can be prepared by existing methods.

[0034] In the quantitative test in the following examples, three repeated experiments were set, and the data were the average value or average value±standard deviation of the three repeated experiments.

[0035] The varnish in the high-hardness anti-sticking single-component hard gel paint of the toy of the present application is provided with embodiments 1-4 and comparative examples 1-4 respectively, and the specific components and amounts are shown in Table 1, with the unit being parts by weight.

[0036] Table 1

[0037]

[0038]

[0039] Specifically, the preparation method of the varnish of the embodiments includes the following steps:

[0040] S1. In a container, high-Tg value acrylic resin, part of butyl acetate (the amount of butyl acetate added is adjusted according to the amounts of acrylic resin, CAB resin and chloroether resin in the formula, and the amount is 17-23 parts) are added in sequence and stirred at 600 rpm for 5 min to obtain material body 1;

[0041] S2. In the material body 1, acrylic resin, CAB resin and chloroether resin are added in sequence while stirring, and after being dissolved to a cleanliness of ≥7H / A (referring to ASTM D1210-1979) at a stirring speed of 1000 rpm for 45 min, material body 2 is obtained;

[0042] S3. After the alkyd resin and fumed silica are uniformly stirred, the alkyd resin and fumed silica are passed through a sand mill, the mass ratio of the alkyd resin to the fumed silica is 10:1, and after being ground to a cleanliness of ≥7H / A, an anti-settling slurry is obtained; in the material body 2, mixed propanol, anti-settling slurry, plasticizer, leveling agent and ethylene glycol butyl ether are added in sequence while stirring, and after being stirred at a stirring speed of 800 rpm for 15 min, material body 3 is obtained;

[0043] S4. In the material body 3, a sample is taken and tested when the cleanliness is ≥7H / A, and the remaining butyl acetate is added to adjust the viscosity to 115±2 KU to obtain the varnish.

[0044] The preparation method of the varnish of the comparative examples can be obtained in the same way, if there are components not to be added, they can be deleted in the corresponding preparation steps, and if there are components to be replaced, they can be replaced in the corresponding preparation steps.

[0045] Colorants and butyl acetate are added to the varnish of embodiment 2 to obtain color paints, which are embodiments 5-7 respectively. Colorants and butyl acetate are added to the varnish of comparative example 1 to obtain color paints, which are comparative examples 5-7 respectively. The specific components and amounts are shown in Table 2, with the unit being parts by weight.

[0046] Table 2

[0047]

[0048] The preparation method of the color paint of the embodiment includes the following steps:

[0049] A1. In the varnish, add colorant, stir at 700 rpm for 5 min, then add butyl acetate to adjust the viscosity to 115 ± 2 KU, to obtain the color paint.

[0050] The preparation method of the color paint of the comparative example is the same.

[0051] Test method:

[0052] The above examples and comparative examples are diluted with corresponding open oil water (dilution mass ratio of varnish:open oil water is 1:1.5; black paint:open oil water is 1:1.2; white paint:open oil water is 1:0.85; silver paint:open oil water is 1:1.4) after room temperature self-drying for 24 hours, and the related properties are tested. The test method is a conventional method in the art, and no special description is made here.

[0053] The test results are shown in Tables 3-4.

[0054] Table 3

[0055]

[0056]

[0057] Table 4

[0058]

[0059]

[0060] From the test results of the related properties of Examples 1-7, it can be seen that the paint of the present application has excellent adhesion on hard rubber substrate, further improves the dryness, improves the hardness, and does not stick to the packaging bag after packaging in PE film bag at 60℃ for 48h, has excellent anti-sticking performance, and improves the performance of single-component hard rubber paint of toys, such as fast drying, high hardness and anti-sticking (anti-sticking to packaging bag).

[0061] From the comparison of the test results of Example 2 and Comparative Example 1, it can be seen that after replacing the high Tg value acrylic resin (Tg value is 95℃) with ordinary acrylic resin, there are serious traces of sticking to the packaging bag on the surface of the substrate in the anti-sticking test, indicating that the anti-sticking (anti-sticking to packaging bag) performance of the film of Comparative Example 1 is low, and the hardness and dryness performance are decreased.

[0062] From the comparison of the test results of Example 2 and Comparative Example 2, it can be seen that the film only added with acrylic resin (Mitsubishi BR-113) has low anti-sticking, hardness and dryness performance, indicating that the high Tg value acrylic resin (Tg value is 95℃) can improve the anti-sticking (anti-sticking to packaging bag), hardness and dryness performance of the hard rubber paint of the present application.

[0063] By comparing the test results of Example 2 and Comparative Example 3, it can be seen that the chlorinated ether resin is compatible with other components in the present formulation, and can improve the flexibility of the hard enamel paint and the anti-burst performance of the paint film.

[0064] By comparing the test results of Example 2 and Comparative Example 4, it can be seen that the absence of the acrylic resin (Mitsubishi BR-113) will cause the paint film to appear slightly matte after storage, indicating that the acrylic resin (Mitsubishi BR-113) can affect the storage stability of the paint film, such as weather resistance, gloss retention and color retention.

[0065] By comparing the test results of Examples 5-7 and Comparative Examples 5-7, it can be seen that replacing the high Tg value acrylic resin (Tg value of 95°C) with ordinary acrylic resin in the color paint will also reduce the anti-sticking (anti-sticking packaging bag) performance of the hard enamel paint.

[0066] The above describes the preferred embodiments of the present application, but the present application is not limited to the specific details in the above embodiments, and within the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, and these simple modifications all belong to the protection scope of the present application.

[0067] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present application will not further describe various possible combinations.

[0068] Furthermore, various different embodiments of the present application can also be combined in any manner, as long as it does not deviate from the technical concept of the present application, and it should also be considered as disclosed by the present application.

Claims

1. A toy high-hardness anti-sticking one-component hard glue paint, including varnish, characterized in that: The varnish comprises the following components calculated by weight: 28 to 42 parts of high Tg acrylic resin; 10 to 15 parts of acrylic resin; 5 to 10 parts of CAB resin; 3 to 8 parts of chloroether resin; 20 to 25 parts of butyl acetate; 3 to 6 parts of mixed propanol; 3 to 7 parts of ethylene glycol butyl ether; 3 to 6 parts of anti-settling slurry; 2 to 4 parts of plasticizer; and 0.2 to 0.5 parts of leveling agent.

2. The toy high-hardness anti-sticking one-component hard glue paint according to claim 1, characterized in that: The high Tg acrylic resin has a Tg of ≥95° C. and a solid content of 50±2%.

3. The toy high-hardness anti-sticking one-component hard glue paint according to claim 1, characterized in that: The acrylic resin includes Mitsubishi thermoplastic solid acrylic resin BR-113, the CAB resin includes Eastman CAB-381-2, and the chloroether resin includes BASF Laroflex MP-45 solid resin.

4. The toy high-hardness anti-sticking one-component hard glue paint according to claim 1, characterized in that: The anti-settling slurry is fumed silica dispersed and wrapped in alkyd resin, the mass ratio of alkyd resin to fumed silica is 10:1, the alkyd resin is Jiangmen Paint PJ330-70 benzene-free modified alkyd resin, and the fumed silica is Cabot CABOT M-5 fumed silica.

5. The toy high-hardness anti-sticking one-component hard glue paint according to claim 1, characterized in that: The plasticizer includes BASF DINCH environmentally friendly plasticizer.

6. The toy high-hardness anti-sticking one-component hard glue paint according to claim 1, characterized in that: The leveling agent includes any one of a polyether-modified polysiloxane leveling agent and a polydimethylsiloxane leveling agent.

7. The toy high-hardness anti-sticking one-component hard glue paint according to claim 1, characterized in that: It also includes 1 to 8 parts of butyl acetate and a colorant; the mass ratio of the varnish to the colorant is 100:(2 to 70), and the colorant includes at least one of color paste, silver powder, pearl powder, fluorescent powder, and matte powder.

8. A method for preparing a varnish for a toy high-hardness anti-sticking one-component hard glue paint according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Add a high Tg acrylic resin and part of butyl acetate to a container and stir at 600 to 800 rpm for 3 to 5 minutes to obtain a material 1; S2. In the material 1, acrylic resin, CAB resin, and chloroether resin were sequentially added while stirring, and the speed was adjusted to 600 to 1000 rpm and stirred for 30 to 45 minutes until the cleanliness was ≥7H / A to obtain material 2; S3. Mixed propanol, anti-settling slurry, plasticizer, leveling agent, ethylene glycol butyl ether were sequentially added to the material 2 while stirring, and the speed was adjusted to 600 to 800 rpm and stirred for 15 to 20 min to obtain material 3; S4. Take a sample from the material body 3 and test it. When the cleanliness is ≥7H / A, add the remaining butyl acetate to adjust the viscosity to 115±2KU to obtain a varnish.

9. The preparation method according to claim 8, characterized in that The anti-settling slurry is fumed silica dispersed and coated with alkyd resin, and the mass ratio of alkyd resin to fumed silica is 10:

1. The alkyd resin and fumed silica are conventionally stirred and then passed through a sand mill to be ground to a cleanliness of ≥7H / A to obtain the anti-settling slurry.

10. A high-hardness, anti-sticking, single-component hard plastic paint film for toys, characterized in that: The toy is prepared from the high-hardness anti-sticking single-component hard glue paint according to any one of claims 1 to 7.

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