Water-oil universal color paste and preparation method thereof

Abstract

The invention discloses a water-oil universal color paste and a preparation method thereof, and relates to the technical field of color paste preparation, the water-oil universal color paste comprises the following raw materials by weight: 20-80 parts of a wrapping modified toner, 5-20 parts of a surfactant, 0.2-0.6 part of an antifoaming agent, 0.5-1.0 part of an anti-settling agent, and 10-20 parts of a cosolvent; a preparation method of the wrapping modified toner comprises the following steps: firstly preparing hollow mesoporous silica spheres, then treating the hollow mesoporous silica spheres in a silane coupling agent, finally adding toner particles, uniformly mixing, and drying to obtain the wrapping modified toner. The hollow silicon dioxide spheres are adsorbed on the surface of the toner, so that the toner has good suspension dispersion capacity, the toner has excellent weather resistance and ageing resistance, and meanwhile, toner particles are subjected to surface modification, so that the toner can become water-oil universal color paste.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of color paste preparation, in particular to a water-oil universal color paste and a preparation method thereof. BACKGROUND

[0002] Color paste, as its name implies, is a kind of pigment concentrated paste, which is developed through strict processing technology by using different pigments and through surface treatment and surface coating technology of pigments. Due to the difference of solvents used, color paste is divided into water-based color paste, oil-based color paste and the like. Traditional paint coloring is to directly add pigment powder to paint, or some paint manufacturers simply make pigment into paste and then add it to paint to color the paint. The pigments in the existing color paste paste generally use organic color powder, but the organic color powder is prone to aging and photolysis after long-term use. SUMMARY

[0003] The present application aims to at least solve one of the problems in the prior art, and provide a water-oil universal color paste and a preparation method thereof.

[0004] The technical solution of the present application is as follows:

[0005] A water-oil universal color paste comprises the following raw materials by weight: 20-80 parts of coated modified color powder, 5-20 parts of surfactant, 0.2-0.6 parts of defoaming agent, 0.5-1.0 parts of anti-settling agent, and 10-20 parts of cosolvent.

[0006] The preparation method of the coated modified color powder is as follows:

[0007] First, hollow mesoporous silica spheres are prepared, then the hollow silica spheres are treated in a silane coupling agent, and finally color powder particles are added, mixed, dried, and prepared.

[0008] As a preferred scheme of the present application, the preparation method of the hollow mesoporous silica spheres is as follows:

[0009] Water, ethanol, diethanolamine and an aqueous solution of cetyltrimethylammonium chloride are mixed and reacted at 50-70 DEG C for 0.5-1 h, then tetraethoxysilane and mercaptopropyltrimethoxysilane are added and the reaction is continued for 2-4 h to obtain a mixed solution, then the mixed solution is mixed with mesitylene and hydrothermal reaction is carried out at 120-140 DEG C for 2-4 d to prepare.

[0010] As a preferred scheme of the present application, the molar ratio of the water, ethanol, diethanolamine, aqueous solution of cetyltrimethylammonium chloride, tetraethoxysilane and mercaptopropyltrimethoxysilane is 3-5:100-200:2-5:6-10:30-32:3-5.

[0011] As a preferred scheme of the present application, the volume ratio of the mixed solution and 1,3,5-trimethylbenzene is 1:1-5.

[0012] As a preferred scheme of the present application, the toner particles are any one of organic pigments of rubber carbon black, pigment carbon black, phthalocyanine blue and phthalocyanine green.

[0013] As a preferred scheme of the present application, the surfactant is a non-ionic surfactant.

[0014] As a preferred scheme of the present application, the co-solvent is propylene glycol.

[0015] As a preferred scheme of the present application, the toner particles are further subjected to the following pretreatment:

[0016] Polyglyceryl-2 isostearate and avocado butter are mixed, then dispersed in an aqueous potassium hydroxide solution, continuously dispersed in an aqueous calcium chloride solution, and finally toner particles are added, stirred, and prepared.

[0017] As a preferred scheme of the present application, the addition amount of polyglyceryl-2 isostearate and avocado butter is 1:1-3 in mass ratio;

[0018] The concentration of the aqueous potassium hydroxide solution is 0.01-1wt%;

[0019] The concentration of the aqueous calcium chloride solution is 5-12wt%;

[0020] The dispersion speed is 2000-3000rpm;

[0021] The stirring speed is 100-200rpm.

[0022] The present application further discloses a preparation method of a water-oil universal toner paste, comprising the following steps:

[0023] S1: mixing a co-solvent, a defoaming agent, an anti-settling agent and a surfactant, and stirring and dispersing at 300-500rpm for 10-20min;

[0024] S2: continuously adding a modified toner, and dispersing at 1000-1200rpm for 60-90min;

[0025] S3: grinding to a particle size of <5μm and stirring uniformly, baking, adjusting the solid content, and preparing.

[0026] The present application has the following beneficial effects: the present application has good suspension and dispersion capacity by adsorbing hollow silica spheres on the surface of toner, and the toner has excellent weather resistance and anti-aging performance, and the present application also modifies the surface of toner particles, which can make the toner become a water-oil universal toner paste. DETAILED DESCRIPTION

[0027] Embodiments of the present application are described in detail below. The embodiments described below are examples for explaining the present application and are not to be understood as limiting the present application. In the embodiments, unless a specific technique or condition is mentioned, the technique or condition described in the literature in the field or according to the product manual is used. The reagents or instruments used are not specified by the manufacturer and are all conventional products that can be obtained commercially.

[0028] Example 1

[0029] A water-oil universal color paste includes the following raw materials by weight fraction: coated modified toner 58 parts, surfactant 10 parts, defoaming agent 0.36 parts, anti-settling agent 0.9 parts, and cosolvent 18 parts.

[0030] The preparation method of the coated modified toner is as follows:

[0031] First, hollow mesoporous silica spheres are prepared, then the hollow silica spheres are treated in silane coupling agent KH570 for 30 min, and finally toner particles are added, mixed, dried, and prepared, with the hollow mesoporous silica spheres accounting for 1 wt% of the toner particles.

[0032] The preparation method of the hollow mesoporous silica spheres is as follows:

[0033] Water, ethanol, diethanolamine, and an aqueous solution of cetyltrimethylammonium chloride are mixed and reacted at 65°C for 0.5 h, then tetraethoxysilane and mercaptopropyltrimethoxysilane are added and the reaction is continued for 3 h to obtain a mixed solution, then the mixed solution is mixed with mesitylene and hydrothermally reacted at 120-140°C for 3 d, then washed with ethanol by centrifugation three times to obtain the product.

[0034] The molar ratio of the water, ethanol, diethanolamine, aqueous solution of cetyltrimethylammonium chloride, tetraethoxysilane, and mercaptopropyltrimethoxysilane is added in a ratio of 4:150:3:8:31.5:4.

[0035] The volume ratio of the mixed solution and mesitylene is 1:4.

[0036] The toner particles are phthalocyanine blue.

[0037] The surfactant is an alkyl polyoxyethylene ether.

[0038] The cosolvent is propylene glycol.

[0039] The toner particles are also subjected to the following pretreatment:

[0040] Polyglyceryl-2 isostearate, avocado fruit oil is mixed, then dispersed in potassium hydroxide aqueous solution, continue to disperse in calcium chloride aqueous solution, finally add color powder particles, stir, and prepare.

[0041] The addition amount of polyglyceryl-2 isostearate, avocado fruit oil is 1:2 by mass ratio;

[0042] The concentration of the potassium hydroxide aqueous solution is 0.05wt%;

[0043] The concentration of the calcium chloride aqueous solution is 10wt%;

[0044] The dispersion speed is 3000rpm;

[0045] The stirring speed is 100rpm;

[0046] Specifically includes the following steps:

[0047] S1: The cosolvent, defoaming agent, anti-settling agent, and surfactant are mixed and dispersed at 400rpm for 15min;

[0048] S2: Continue to add the coated modified toner and disperse at 1200rpm for 90min;

[0049] S3: Grind to a particle size of <5μm and stir uniformly, bake, and adjust to the standard solid content to prepare.

[0050] Example 2

[0051] A water-oil universal color paste includes the following raw materials by weight fraction: coated modified toner 50 parts, surfactant 5 parts, defoaming agent 0.3 parts, anti-settling agent 0.7 parts, and cosolvent 15 parts;

[0052] The preparation method of the coated modified toner is as follows:

[0053] First, hollow mesoporous silica spheres are prepared, then the hollow silica spheres are treated in silane coupling agent KH570 for 30min, finally color powder particles are added, mixed, dried, and prepared, with the hollow mesoporous silica spheres accounting for 3wt% of the color powder particles.

[0054] The preparation method of the hollow mesoporous silica spheres is as follows:

[0055] Mix water, ethanol, diethanolamine, and cetyltrimethylammonium chloride aqueous solution, react at 65℃ for 0.5h, then add tetraethoxysilane and mercaptopropyltrimethoxysilane, continue to react for 3h, obtain a mixed solution, then mix the mixed solution with mesitylene, and perform hydrothermal reaction at 120-140℃ for 3d, then wash with ethanol by centrifugation three times, and prepare.

[0056] The molar ratio of the water, ethanol, diethanolamine, cetyltrimethylammonium chloride aqueous solution, tetraethoxysilane and mercaptopropyltrimethoxysilane is 4:150:3:8:31.5:4.

[0057] The volume ratio of the mixed solution and 1,3,5-trimethylbenzene is 1:4.

[0058] The toner particles are phthalocyanine blue.

[0059] The surfactant is alkyl polyoxyethylene ether.

[0060] The cosolvent is propylene glycol.

[0061] The toner particles are also subjected to the following pretreatment:

[0062] The polyglyceryl-2 isostearate and shea butter are mixed, then dispersed in an aqueous potassium hydroxide solution, further dispersed in an aqueous calcium chloride solution, and finally added with toner particles, stirred, to obtain.

[0063] The addition amount of the polyglyceryl-2 isostearate and shea butter is 1:2 by mass;

[0064] The concentration of the aqueous potassium hydroxide solution is 0.05wt%;

[0065] The concentration of the aqueous calcium chloride solution is 7wt%;

[0066] The dispersion speed is 2500rpm;

[0067] The stirring speed is 150rpm.

[0068] Specifically comprising the following steps:

[0069] S1: mixing the cosolvent, defoaming agent, anti-settling agent and surfactant, stirring and dispersing at 400rpm for 15min;

[0070] S2: further adding the coated modified toner, dispersing at 1200rpm for 90min;

[0071] S3: grinding to a particle size of <5μm and stirring uniformly, baking, adjusting to a standard solid content, to obtain.

[0072] Example 3

[0073] A water-oil universal color paste, comprising the following raw materials by weight fraction: coated modified toner 60 parts, surfactant 5 parts, defoaming agent 0.6 parts, anti-settling agent 0.5 parts, cosolvent 15 parts;

[0074] The preparation method of the coated modified toner is as follows:

[0075] The hollow mesoporous silica spheres are prepared first, then treated in silane coupling agent KH570 for 30 min, and finally added with color powder particles, mixed, dried, and prepared into hollow mesoporous silica spheres accounting for 4 wt% of the color powder particles.

[0076] The preparation method of the hollow mesoporous silica spheres is as follows:

[0077] Water, ethanol, diethanolamine, and an aqueous solution of cetyltrimethylammonium chloride are mixed and reacted at 65℃ for 0.5 h, then tetraethoxysilane and mercaptopropyltrimethoxysilane are added and the reaction is continued for 3 h to obtain a mixed solution, then the mixed solution is mixed with mesitylene, and hydrothermal reaction is carried out at 120-140℃ for 3 d, then the product is washed by centrifugation with ethanol three times to obtain the hollow mesoporous silica spheres.

[0078] The molar ratio of the water, ethanol, diethanolamine, aqueous solution of cetyltrimethylammonium chloride, tetraethoxysilane, and mercaptopropyltrimethoxysilane is added in a ratio of 4:150:3:8:31.5:4.

[0079] The volume ratio of the mixed solution to mesitylene is 1:4.

[0080] The color powder particles are phthalocyanine blue.

[0081] The surfactant is alkyl polyoxyethylene ether.

[0082] The cosolvent is propylene glycol.

[0083] The color powder particles are also subjected to the following pretreatment:

[0084] Polyglyceryl-2 isostearate and avocado butter are mixed, then dispersed in an aqueous potassium hydroxide solution, further dispersed in an aqueous calcium chloride solution, and finally added with color powder particles and stirred to obtain the product.

[0085] The addition amount of the polyglyceryl-2 isostearate and avocado butter is a mass ratio of 1:3.

[0086] The concentration of the aqueous potassium hydroxide solution is 0.03 wt%.

[0087] The concentration of the aqueous calcium chloride solution is 7 wt%.

[0088] The dispersion speed is 3000 rpm.

[0089] The stirring speed is 200 rpm.

[0090] Specifically comprising the following steps:

[0091] S1: mixing the cosolvent, defoaming agent, anti-settling agent, and surfactant, and stirring and dispersing at 400 rpm for 15 min;

[0092] S2: continuously adding the coated modified toner, and dispersing at 1200 rpm for 90 min;

[0093] S3: grinding to a particle size < 5 μm and stirring uniformly, baking, adjusting to a standard solid content, and obtaining.

[0094] Example 4

[0095] A water-oil universal colorant paste, comprising the following raw materials in weight fractions: coated modified toner 70 parts, surfactant 6 parts, defoaming agent 0.5 parts, anti-settling agent 1.0 parts, and cosolvent 15 parts;

[0096] The preparation method of the coated modified toner is as follows:

[0097] First, hollow mesoporous silica spheres are prepared, then the hollow mesoporous silica spheres are treated in silane coupling agent KH570 for 30 min, and finally toner particles are added, mixed, dried, and obtained, with the hollow mesoporous silica spheres accounting for 1 wt% of the toner particles.

[0098] The preparation method of the hollow mesoporous silica spheres is as follows:

[0099] Mix water, ethanol, diethanolamine, and a hexadecyltrimethylammonium chloride aqueous solution, and react at 65°C for 0.5 h, then add tetraethoxysilane and mercaptopropyltrimethoxysilane, and continue to react for 3 h to obtain a mixed solution, then mix the mixed solution with mesitylene, and perform hydrothermal reaction at 120-140°C for 3 d, then wash with ethanol by centrifugation three times to obtain.

[0100] The molar ratio of the water, ethanol, diethanolamine, hexadecyltrimethylammonium chloride aqueous solution, tetraethoxysilane, and mercaptopropyltrimethoxysilane is 4:150:3:8:31.5:4.

[0101] The volume ratio of the mixed solution to mesitylene is 1:4.

[0102] The toner particles are phthalocyanine blue.

[0103] The surfactant is an alkyl polyoxyethylene ether.

[0104] The cosolvent is propylene glycol.

[0105] The toner particles are also subjected to the following pretreatment:

[0106] Polyglyceryl-2 isostearate, avocado fruit oil is mixed, then dispersed in potassium hydroxide aqueous solution, continue to disperse in calcium chloride aqueous solution, finally add color powder particles, stirring, preparation.

[0107] The addition amount of polyglyceryl-2 isostearate, avocado fruit oil is 1:2 in mass ratio;

[0108] The concentration of the potassium hydroxide aqueous solution is 0.05wt%;

[0109] The concentration of the calcium chloride aqueous solution is 7wt%;

[0110] The dispersion speed is 2500rpm;

[0111] The stirring speed is 100rpm.

[0112] Specifically includes the following steps:

[0113] S1: The cosolvent, defoaming agent, anti-settling agent, surfactant are mixed, and dispersed at 400rpm for 15min;

[0114] S2: Continue to add the wrapped modified toner, and disperse at 1200rpm for 90min;

[0115] S3: Grind to a particle size of <5μm and stir uniformly, bake, adjust to the standard solid content, and prepare.

[0116] Example 5

[0117] This example is a variation based on example 2, specifically: the preparation method of the wrapped modified toner is as follows:

[0118] First, prepare hollow mesoporous silica spheres, then treat the hollow silica spheres in silane coupling agent KH570 for 30min, finally add color powder particles and rod point particles, mix, dry, prepare, hollow mesoporous silica spheres and rod point particles account for 3wt% and 1wt% of color powder particles respectively.

[0119] The preparation method of the rod point ion is as follows:

[0120] Ultrasonic dispersion of nano attapulgite fiber particles in a mixed solution of ethanol and ammonia water, dropwise addition of silicate and octadecylsilane under continuous stirring, stirring at room temperature for 20h, centrifugal separation and drying.

[0121] The mass ratio of the nano attapulgite fiber particles, ethanol, ammonia water, silicate and octadecylsilane is 23:7:1:17:3.

[0122] The rest is the same as example 2.

[0123] Comparative Example 1

[0124] Different from Example 2 is that the modified toner is directly used as toner.

[0125] Comparative Example 2

[0126] Different from Example 2 is that the toner particles are not pretreated.

[0127] The above examples and comparative examples are tested for performance, and the test results are shown in Table 1.

[0128] Specifically, the Zeta potential is measured on a Zetasizer Nano-ZS90 particle size analyzer after the color paste is placed for 15 days.

[0129] Light resistance (GB / T 1710-2008) test

[0130] Table 1: Performance test results of examples and comparative examples

[0131] Sample Zeta potential (mV) Light fastness (grade) Example 1 -24.3 7-8 Example 2 -25.8 7-8 Example 3 -25.1 7-8 Example 4 -25.2 7-8 Example 5 -27.2 7-8 Comparative Example 1 -15.2 4-5 Comparative Example 2 -20.6 5-6

[0132] As can be seen from Table 1, the performance of the examples of the present application is better than that of the comparative examples, and the main reason may be that the examples have good suspension and dispersion capacity by adsorbing hollow silica spheres on the surface of the toner, and also make the toner have excellent weather resistance and anti-aging performance. In addition, the toner particles are surface modified to make them into water-oil universal color paste. In addition, the performance of Example 5 is better, mainly because the rod point particles are added in the example, which greatly improves the dispersion capacity and reduces the agglomeration of the toner particles.

[0133] The above examples only express the preferred embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent of the present application. It should be noted that for ordinary skilled in the art, according to the above described technical solutions and concepts, other various corresponding changes and deformations can also be made, and all these changes and deformations should belong to the protection scope of the claims of the present application.

Claims

1. A water-oil universal color paste, characterized in that, The raw materials include the following weight fractions: modified encapsulated toner 20-80 parts, surfactant 5-20 parts, defoaming agent 0.2-0.6 parts, anti-settling agent 0.5-1.0 parts, and co-solvent 10-20 parts; The preparation method of the modified encapsulated toner is as follows: First, hollow mesoporous silica spheres are prepared, then the hollow silica spheres are treated in a silane coupling agent, and finally toner particles are added, mixed, dried, and prepared.

2. The universal water-oil color paste according to claim 1, characterized in that, The preparation method of the hollow mesoporous silica spheres is as follows: Water, ethanol, diethanolamine, and a hexadecyltrimethylammonium chloride aqueous solution are mixed and reacted at 50-70℃ for 0.5-1h, then tetraethoxysilane and mercaptopropyltrimethoxysilane are added and the reaction is continued for 2-4h to obtain a mixed solution, then the mixed solution is mixed with mesitylene and hydrothermally reacted at 120-140℃ for 2-4d to obtain the hollow mesoporous silica spheres.

3. The universal water-oil color paste according to claim 2, characterized in that, The molar ratio of the water, ethanol, diethanolamine, hexadecyltrimethylammonium chloride aqueous solution, tetraethoxysilane, and mercaptopropyltrimethoxysilane is 3-5:100-200:2-5:6-10:30-32:3-5.

4. The universal water-oil color paste according to claim 2, characterized in that, The volume ratio of the mixed solution to mesitylene is 1:1-5.

5. The water-oil universal color paste according to claim 1, characterized in that, The toner particles are any one of rubber carbon black, pigment carbon black, phthalocyanine blue, and phthalocyanine green organic pigments.

6. The universal water-oil color paste of claim 1, wherein, The surfactant is a non-ionic surfactant.

7. The water-oil universal color paste according to claim 1, characterized in that, The co-solvent is propylene glycol.

8. The universal water-oil color paste of claim 1, wherein, The toner particles are also pretreated as follows: Polyglyceryl-2 isostearate and avocado butter are mixed, then a potassium hydroxide aqueous solution is added to disperse, a calcium chloride aqueous solution is added to disperse, and finally toner particles are added and stirred to obtain the modified encapsulated toner.

9. The universal water-oil color paste of claim 1, wherein, The mass ratio of the polyglyceryl-2 isostearate to avocado butter is 1:1-3. The concentration of the potassium hydroxide aqueous solution is 0.01-1wt%; The concentration of the calcium chloride aqueous solution is 5-12wt%; The dispersion speed is 2000-3000rpm; The stirring speed is 100-200rpm.

10. A method of preparing a universal water-based colorant according to any one of claims 1 to 9, characterized in that, The method includes the following steps: S1: The co-solvent, defoaming agent, anti-settling agent, and surfactant are mixed and dispersed at 300-500rpm for 10-20min; S2: The modified encapsulated toner is added and dispersed at 1000-1200rpm for 60-90min; S3: The mixture is ground to a particle size of <5μm, stirred, baked, and the solid content is adjusted to obtain the modified encapsulated toner.