Washable pen water-based pigment ink with covering power and preparation method thereof

Abstract

The invention discloses a water-based pigment ink with covering power and washable for pens and a preparation method of the water-based pigment ink. The water-based pigment ink comprises the following components in percentage by mass: 30-50% of water; 0.1%-0.5% of a defoaming agent; 1-3% of a wetting dispersant; 20-35% of a water-based synthetic silicone acrylic emulsion; 0-10% of a water-based washable pigment; 0.1 to 0.3 percent of preservative; 3-6% of a humectant; 0.1-1% of an anti-settling agent; 10-25% of a titanium dioxide pigment; 0.5-20% of a washing auxiliary agent; the covering power of the ink is provided by titanium dioxide, and the covering power provided by the ink can be used for writing on a base material with a ground color. Water is used as a main body of the ink, so that the ink is environment-friendly, non-toxic and very friendly to the environment and consumer health; the water-based synthetic silicone acrylic emulsion, the water-washable pigment and the water-based color paste are adopted, so that the ink disclosed by the invention has good weather resistance; the ink contains titanium dioxide pigment, has extremely strong covering power, and can almost write on the surface of any base material; and the special washable auxiliary agent is matched with carefully selected resin, so that the cleaning agent can be cleaned on the skin and the cloth.

Description

Technical Field

[0001] The present invention relates to the technical field of fine chemicals, and relates to a water-based pigment ink for pens with covering power and washability and a preparation method thereof. Background Art

[0002] In modern society, drawing and painting are one of the more common hobbies of people. Especially, it is often something that many children like to do in their spare time, which is very helpful for cultivating children's imagination, concentration and patience. With the development and progress of society, there are various watercolor pens on the market at present, with different functions to meet different needs of people. However, there are still some defects to be improved in the existing different types of watercolor pens. For example, for the washable markers, there are many dye-type washable markers, and their washable removal function is often limited to several less painting object materials. There is no water-based pigment marker that can write on almost all substrates, has covering power, and can be washed off on the skin and fabrics. The water-based acrylic markers on the market with covering power and can write on all substrates cannot be washed off on the skin and fabrics, and it is extremely difficult to remove once colored. This brings inconvenience to people's daily use. For example, when some children accidentally get colored pigments on their skin, it takes a long time to fade naturally, causing a bad impact and experience. Therefore, developing a water-based pigment ink with covering power and washability is of great invention significance and greatly fills the gap in this field on the market. Summary of the Invention

[0003] The present invention aims at the above problems and provides a water-based pigment ink for pens with covering power and washability, which comprises the following components in mass percentage: 30 - 50% of water; 0.1 - 0.5% of defoamer; 1 - 3% of wetting and dispersing agent; 20 - 35% of water-based synthetic silicone-acrylic emulsion; 0 - 10% of water-based color paste; 0.1 - 0.3% of preservative; 3 - 6% of humectant; 0.1 - 1% of anti-settling agent; 10 - 25% of titanium dioxide pigment; 0.5 - 20% of washing aid; 0.1 - 1% of other additives.

[0004] As a further description of the present invention, the water is any one of pure water or deionized water.

[0005] Furthermore, the defoamer is water-based DefomW-0506.

[0006] Furthermore, the wetting and dispersing agent is BYK-192.

[0007] Furthermore, the water-based synthetic silicone-acrylic emulsion is Yinyang YS-890.

[0008] Furthermore, the water-based color paste is a water-based pigment washable color paste of any color.

[0009] Furthermore, the preservative is TroyMergal K9N; the humectant is food-grade propylene glycol; the anti-settling agent is BYK7420; the titanium dioxide pigment is Ti-Pure R-900.

[0010] Furthermore, the water-washing aid is aqueous hydroxypropyl-β-cyclodextrin.

[0011] Furthermore, the other aids include, but are not limited to, leveling agents, co-solvents, and pH regulators.

[0012] The preparation method of the above-mentioned pen water-based pigment ink with covering power and washability specifically includes the following steps:

[0013] (1) Add water to the dispersion equipment, and successively add the defoaming agent, wetting and dispersing agent, and water-washing aid under low-speed stirring, and continue stirring for 10 minutes until evenly stirred:

[0014] (2) Then add the aqueous synthetic silicone-acrylic emulsion under low-speed stirring, and continue stirring for 10 minutes until evenly stirred;

[0015] (3) Then successively add the anti-settling agent, water-based washable pigment, and water-based color paste under low-speed stirring, and stir at high speed for 30 minutes until completely evenly stirred;

[0016] (4) Finally, successively add the preservative, humectant, and other aids under low-speed stirring, and continue stirring for 10 minutes until evenly stirred;

[0017] The low speed is 400 - 600 RPM, and the high speed is 800 - 1200 RPM.

[0018] Advantages of the present invention:

[0019] The present invention uses water as the main body of the ink, which has no peculiar smell, is environmentally friendly and non-toxic, and is very friendly to the environment and the health of consumers; the use of aqueous synthetic silicone-acrylic emulsion, washable pigments and aqueous color paste (pigment type) makes the ink of the present application have good weather resistance; the ink contains titanium dioxide pigment, which has extremely strong covering power and can be written on almost any substrate surface; the special water-washing aid and the carefully selected resin cooperate to be able to be cleaned cleanly on the skin and fabric. Specific embodiments

[0020] The following is a detailed description of the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it should be understood that the orientation or position or sequential relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "first", "second", etc. is based on the orientation or position or sequential relationship shown, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0022] Based on the main inventive concept of the present invention, several embodiments and preparation methods of pen water-based pigment ink with different component ratios are provided below, and the comparative data of the effects among them are used to illustrate the actual performance of the pen water-based pigment ink with covering power and washability of the present invention. It should be noted that the raw materials used in the technical solutions provided by the present invention are prepared by conventional means or purchased through commercial channels unless otherwise specified.

[0023] Example 1:

[0024] A pen water-based pigment ink with covering power and washability, comprising the following components in mass percentage:

[0025]

[0026]

[0027] Example 2:

[0028] A pen water-based pigment ink with covering power and washability, comprising the following components in mass percentage:

[0029]

[0030] Example 3:

[0031] A pen water-based pigment white ink with covering power and washability, comprising the following components in mass percentage:

[0032]

[0033] Example 4:

[0034] A pen water-based pigment ink with covering power and washability, comprising the following components in mass percentage:

[0035]

[0036]

[0037] Example 5:

[0038] A water-based pigment ink for pens with covering power and washability, comprising the following components in mass percentage:

[0039]

[0040] Example 6:

[0041] A water-based pigment ink for pens with covering power and washability, comprising the following components in mass percentage:

[0042]

[0043]

[0044] The preparation method of the water-based pigment ink for pens with covering power and washability in the above Examples 1-6 includes the following steps:

[0045] (1) Add water to the dispersion equipment, and successively add an antifoaming agent, a wetting and dispersing agent, and a wash aid under low-speed stirring, and continue stirring for 10 minutes until evenly mixed:

[0046] (2) Then add a water-based synthetic silicone-acrylic emulsion under low-speed (400-600 RPM) stirring, and continue stirring for 10 minutes until evenly mixed;

[0047] (3) Then successively add an anti-settling agent, a water-based washable pigment, and a water-based color paste under low-speed (400-600 RPM) stirring, and stir at high speed (800-1200 RPM) for 30 minutes until completely evenly mixed;

[0048] (4) Finally, successively add a preservative, a humectant, and other auxiliaries under low-speed (400-600 RPM) stirring, and continue stirring for 10 minutes until evenly mixed.

[0049] The dispersion equipment used in the above method can be common equipment such as a high-speed disperser, a stirrer, a mixer, etc.

[0050] Next, the water-based pigment ink for pens in the above Examples 1-6 and two existing conventional

[0051] products (conventional washable pen inks and acrylic marker inks) are subjected to some main ink performance comparisons

[0052] tests, including ink writability tests, covering power performance tests, lightfastness performance tests,

[0053] washability and ink appearance tests, etc.

[0054] The comparison data of the ink writability test is as follows:

[0055]

[0056] It can be seen that in the above embodiments, based on the added titanium dioxide pigment component, the

[0057] The invention shows that the writability of the water-based pigment ink of the water-washable pen with covering power has a significant influence, so that the water-based pigment ink of the water-washable pen with covering power of the present invention can be used in

[0058] It can be used on any substrate, significantly improving the ink's writability.

[0059] Products (conventional washable pens) have significant advantages.

[0060] The comparative data of the ink hiding power performance test are as follows:

[0061]

[0062] It can be seen that in the above embodiment, the added titanium dioxide pigment component has a significant effect on the covering power of the water-based pigment ink for the water-washable pen of the present invention, so that the water-based pigment ink for the water-washable pen of the present invention has a strong covering power, and can completely cover the base color of dark / light substrates, which has a significant advantage over competing products (conventional washable pens).

[0063] The comparison data of the ink's 24-hour light fastness performance test and 24-hour 60°C high temperature test are as follows:

[0064]

[0065] It can be seen that in the above embodiments, based on the use of water-based synthetic silicone acrylic emulsion, water-washable

[0066] The component combination of pigment and water-based color paste is used for the pen with covering power and washable

[0067] The weather resistance of water-based pigment ink has a significant impact, making the present invention have hiding power

[0068] The weather resistance of washable pens using water-based pigment inks has been significantly improved.

[0069] The above data show that the water-based pigment ink of the present invention has good covering power and is washable and weather-resistant

[0070] It can pass the 24-hour sun-fastness test and the 60°C high-temperature stability test, and has significant advantages over competing products (conventional washable pens).

[0071] The ink is washable. The lines are washed after being washed on a multi-fiber cloth for 2 hours.

[0072] The test comparison data is as follows:

[0073]

[0074] It can be seen that in the above embodiments, based on the component combination of waterborne synthetic silicone-acrylic emulsion and waterborne hydroxypropyl-β-cyclodextrin, it has a significant impact on the washability of the water-based pigment ink for pens with covering power of the present invention, making the washability of the water-based pigment ink for pens with covering power of the present invention very excellent, and having significant advantages over competing products (conventional washable pens) and competing products (acrylic markers).

[0075] The comparison data of the ink appearance test are as follows:

[0076]

[0077] It can be seen that in the above embodiments, the water-based pigment ink for pens with covering power of the present invention uses water as the main body of the ink, is environmentally friendly and non-toxic, and is very friendly to the environment and consumers' health, and has significant advantages over competing products (conventional washable pens) and competing products (acrylic markers).

[0078] Based on the above specific embodiments and the test comparison data, obviously, the water-based pigment ink for pens with covering power of the present invention uses water as the main body of the ink, has no peculiar smell, is environmentally friendly and non-toxic, and is very friendly to the environment and consumers' health; uses waterborne synthetic silicone-acrylic emulsion, washable pigments and water-based color pastes (pigment type), making the ink of the present application have good weather resistance; contains titanium dioxide pigment in the ink, has extremely strong covering power, and can be written on almost any substrate surface; the special washable auxiliary agent and the carefully selected resin are combined, and can be cleaned on the skin and fabric. In terms of the comprehensive use effect, it has advantages over the existing conventional washable pen inks and acrylic marker inks, improves the comprehensive performance of the water-based pigment ink for pens, and is beneficial to improving the market competitiveness of its application products.

[0079] The above only illustrates the preferred embodiments of the present invention, but it cannot be understood as a limitation to the claims. The present invention is not limited to the above embodiments, and its specific structure allows changes. In short, all changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. A water-based pigment ink for a pen having covering power and being washable, characterized in that: The invention comprises the following components in percentage by mass: 30-50% of water; 0.1-0.5% of defoaming agent; 1-3% of wetting and dispersing agent; 20-35% of water-based synthetic silicone acrylic emulsion; 0-10% of water-based color paste; 0.1-0.3% of preservative; 3-6% of moisturizing agent; 0.1-1% of anti-settling agent; 10-25% of titanium dioxide pigment; 0.5-20% of water washing aid; and 0.1-1% of other additives.

2. The water-based pigment ink for a washable pen having covering power according to claim 1, characterized in that: The water is any one of pure water or deionized water.

3. The water-based pigment ink for a washable pen having covering power according to claim 1, characterized in that: The defoamer is water-based DefomW-0506.

4. The water-based pigment ink for a washable pen having covering power according to claim 1, characterized in that: The wetting and dispersing agent is BYK-192.

5. The water-based pigment ink for a washable pen having covering power according to claim 1, characterized in that: The aqueous synthetic silicone acrylic emulsion is Yinyang YS-890.

6. The water-based pigment ink for a washable pen having covering power according to claim 1, characterized in that: The water-based color paste is a water-based pigment washable color paste of any color.

7. The water-based pigment ink for a washable pen having covering power according to claim 1, characterized in that: The preservative is Troy Mergal K9N; the moisturizer is food-grade propylene glycol; the anti-settling agent is BYK7420; and the titanium dioxide pigment is Ti-Pure R-900.

8. The water-based pigment ink for a washable pen having covering power according to claim 1, characterized in that: The washing aid is aqueous hydroxypropyl-β-cyclodextrin.

9. The water-based pigment ink for a washable pen having covering power according to claim 1, characterized in that: The other additives include but are not limited to leveling agents, co-solvents, and pH regulators.

10. A method for preparing a water-based pigment ink for a washable pen having covering power as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: (1) Add water to the dispersing equipment, add defoamer, wetting dispersant, and washing aid in sequence under low-speed stirring, and continue stirring for 10 minutes until the mixture is evenly mixed: (2) Then, add the aqueous synthetic silicone acrylic emulsion under low-speed stirring, and continue stirring for 10 minutes until the mixture is uniformly stirred; (3) then adding the anti-settling agent, water-based washable pigment, and water-based color paste in sequence under low-speed stirring, and stirring at high speed for 30 minutes until completely stirred; (4) Finally, add preservatives, moisturizers, and other additives in sequence under low-speed stirring, and continue stirring for 10 minutes until the mixture is evenly mixed; The low speed is 400-600RPM, and the high speed is 800-1200RPM.

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