High-dispersion type solvent dye and preparation method thereof

Abstract

The invention is applicable to the technical field of solvent dyes, and provides a highly dispersed solvent dye and a preparation method thereof, the highly dispersed solvent dye comprises the following components by mass: 2.1-7.2 parts of phthalocyanine, 17-32 parts of a solvent, 0.8-1.4 parts of polyvinyl alcohol, 2.2-5.4 parts of composite titanium dioxide, 1.1-2.7 parts of titanium dioxide, 0.6-2.7 parts of a dispersant, 1-2 parts of a surfactant, 0.4-1 part of a leveling agent, and 1-3 parts of nano silica; preferably, the solvent dye further comprises the following components in parts by mass: 0.3 to 0.6 part of silicone oil, 0.2 to 0.8 part of cyclodextrin and 0.5 to 1.5 parts of ethylenediamine tetraacetic acid, preferably, the solvent is one or more of glycol ether, ethylene glycol and ethyl acetate. The solvent dye prepared by the invention has high dispersibility, greatly reduces the problems of uneven color, dye precipitation, unstable color, reduced coloring strength and the like, and has wide application prospects.

Description

Technical Field

[0001] The invention relates to the technical field of solvent dyes, in particular to a highly dispersed solvent dye and a preparation method thereof. Background Art

[0002] Solvent dyes are a type of dye that can dissolve in organic solvents but not easily in water. This type of dye is mainly used to dye non-aqueous media, such as oils, paints, plastics, cosmetics, inks, etc. The main difference between solvent dyes and water-based dyes is their dissolution medium: solvent dyes rely on organic solvents, while water-based dyes rely on water.

[0003] Dispersibility refers to the ability of solvent dyes to be evenly distributed in a solvent or medium without agglomerating into particles or precipitating. The good dispersibility of solvent dyes directly affects the dyeing effect, product quality and processing performance.

[0004] Most of the existing solvent dyes have insufficient dispersibility. Solvent dyes with low dispersibility can lead to a series of problems such as uneven color, dye precipitation, color instability, and reduced tinting strength. Therefore, it is very important to develop highly dispersed solvent dyes. Summary of the invention

[0005] The present invention aims to provide a highly dispersed solvent dye and a preparation method thereof, so as to solve a series of problems in the prior art, such as the insufficient dispersibility of most solvent dyes, which may lead to uneven color, dye precipitation, unstable color, reduced tinting strength, etc.

[0006] To achieve the above object, the present invention provides the following technical solution: In a first aspect, the present invention provides a highly dispersed solvent dye, wherein the components and contents of the solvent dye are as follows, in parts by mass:

[0007] 2.1-7.2 parts of phthalocyanine, 17-32 parts of solvent, 0.8-1.4 parts of polyvinyl alcohol, 2.2-5.4 parts of composite titanium dioxide, 1.1-2.7 parts of titanium dioxide, 0.6-2.7 parts of dispersant, 1-2 parts of surfactant, 0.4-1 part of leveling agent, and 1-3 parts of nano-silicon dioxide.

[0008] Preferably, the solvent dye further comprises the following components in parts by mass:

[0009] 0.3-0.6 parts of silicone oil, 0.2-0.8 parts of cyclodextrin, and 0.5-1.5 parts of ethylenediaminetetraacetic acid.

[0010] Preferably, the solvent is one or more of ethylene glycol ethyl ether, ethylene glycol, and ethyl acetate.

[0011] Preferably, the phthalocyanine is one or more of tetraaminophthalocyanine zinc, tetracarboxylphthalocyanine cobalt, and tetracarboxylphthalocyanine copper.

[0012] Preferably, the surfactant is one or more of sodium dodecylbenzene sulfonate, alkylphenol polyoxyethylene ether, and polyethyleneimine.

[0013] Preferably, the dispersant is one or more of citric acid and tartaric acid.

[0014] The second aspect of the present invention provides a method for preparing the highly dispersed solvent dye according to the first aspect of the present invention, comprising the following steps:

[0015] Step (1), mixing phthalocyanine, composite titanium dioxide, titanium dioxide and nano-silicon dioxide, and grinding for 8 to 10 minutes to obtain a mixture A;

[0016] Step (2), adding mixture A into a blender to mix with the remaining components, and stirring at high speed for 15 to 20 minutes to obtain a solvent dye.

[0017] The present invention has at least the following beneficial effects:

[0018] The invention provides a highly dispersed solvent dye and a preparation method thereof. The prepared solvent dye has high dispersibility, greatly reduces problems such as uneven color, dye precipitation, unstable color, reduced tinting strength, etc., and has broad application prospects. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example 1

[0021] A highly dispersed solvent dye, the components and contents of the solvent dye are as follows, calculated by weight:

[0022] 2.1 parts of phthalocyanine, 17 parts of solvent, 0.8 parts of polyvinyl alcohol, 2.2 parts of composite titanium dioxide, 1.1 parts of titanium dioxide, 0.6 parts of dispersant, 1 part of surfactant, 0.4 parts of leveling agent, and 1 part of nano-silicon dioxide.

[0023] The solvent is ethylene glycol ethyl ether; the phthalocyanine is zinc tetraaminophthalocyanine; the surfactant is sodium dodecylbenzene sulfonate; and the dispersant is citric acid.

[0024] The preparation method of the above highly dispersed solvent dye comprises the following steps:

[0025] Step (1), mixing phthalocyanine, composite titanium dioxide, titanium dioxide and nano-silicon dioxide, and grinding for 8 minutes to obtain a mixture A;

[0026] Step (2), adding mixture A into a blender to mix with the remaining components, and stirring at high speed for 15 minutes to obtain a solvent dye.

[0027] Example 2

[0028] A highly dispersed solvent dye, the components and contents of the solvent dye are as follows, calculated by weight:

[0029] 5.4 parts of phthalocyanine, 26 parts of solvent, 1 part of polyvinyl alcohol, 3.4 parts of composite titanium dioxide, 1.7 parts of titanium dioxide, 2 parts of dispersant, 1.5 parts of surfactant, 0.6 parts of leveling agent, and 1.8 parts of nano-silicon dioxide.

[0030] The solvent is ethylene glycol; the phthalocyanine is tetracarboxyl phthalocyanine cobalt; the surfactant is alkylphenol polyoxyethylene ether; and the dispersant is tartaric acid.

[0031] The preparation method of the above highly dispersed solvent dye comprises the following steps:

[0032] Step (1), mixing phthalocyanine, composite titanium dioxide, titanium dioxide and nano-silicon dioxide, and grinding for 9 minutes to obtain a mixture A;

[0033] Step (2), adding mixture A into a blender to mix with the remaining components, and stirring at high speed for 18 minutes to obtain a solvent dye.

[0034] Example 3

[0035] A highly dispersed solvent dye, the components and contents of the solvent dye are as follows, calculated by weight:

[0036] 7.2 parts of phthalocyanine, 32 parts of solvent, 1.4 parts of polyvinyl alcohol, 5.4 parts of composite titanium dioxide, 2.7 parts of titanium dioxide, 2.7 parts of dispersant, 2 parts of surfactant, 1 part of leveling agent, and 3 parts of nano-silicon dioxide.

[0037] The solvent is ethyl acetate; the phthalocyanine is tetracarboxyl copper phthalocyanine; the surfactant is polyethyleneimine; and the dispersant is tartaric acid.

[0038] The preparation method of the above highly dispersed solvent dye comprises the following steps:

[0039] Step (1), mixing phthalocyanine, composite titanium dioxide, titanium dioxide and nano-silicon dioxide, and grinding for 10 minutes to obtain a mixture A;

[0040] Step (2), adding mixture A into a blender to mix with the remaining components, and stirring at high speed for 20 minutes to obtain a solvent dye.

[0041] Example 4

[0042] A highly dispersed solvent dye, the components and contents of the solvent dye are as follows, calculated by weight:

[0043] 2.1 parts of phthalocyanine, 17 parts of solvent, 0.8 parts of polyvinyl alcohol, 2.2 parts of composite titanium dioxide, 1.1 parts of titanium dioxide, 0.6 parts of dispersant, 1 part of surfactant, 0.4 parts of leveling agent, 1 part of nano-silica, 0.3 parts of silicone oil, 0.2 parts of cyclodextrin, and 0.5 parts of ethylenediaminetetraacetic acid.

[0044] The solvent is ethylene glycol ethyl ether; the phthalocyanine is zinc tetraaminophthalocyanine; the surfactant is sodium dodecylbenzene sulfonate; and the dispersant is citric acid.

[0045] The preparation method of the above highly dispersed solvent dye comprises the following steps:

[0046] Step (1), mixing phthalocyanine, composite titanium dioxide, titanium dioxide and nano-silicon dioxide, and grinding for 8 minutes to obtain a mixture A;

[0047] Step (2), adding mixture A into a blender to mix with the remaining components, and stirring at high speed for 15 minutes to obtain a solvent dye.

[0048] Example 5

[0049] A highly dispersed solvent dye, the components and contents of the solvent dye are as follows, calculated by weight:

[0050] 5.4 parts of phthalocyanine, 26 parts of solvent, 1 part of polyvinyl alcohol, 3.4 parts of composite titanium dioxide, 1.7 parts of titanium dioxide, 2 parts of dispersant, 1.5 parts of surfactant, 0.6 parts of leveling agent, 1.8 parts of nano-silicon dioxide, 0.5 parts of silicone oil, 0.6 parts of cyclodextrin, and 1.2 parts of ethylenediaminetetraacetic acid.

[0051] The solvent is ethylene glycol; the phthalocyanine is tetracarboxyl phthalocyanine cobalt; the surfactant is alkylphenol polyoxyethylene ether; and the dispersant is tartaric acid.

[0052] The preparation method of the above highly dispersed solvent dye comprises the following steps:

[0053] Step (1), mixing phthalocyanine, composite titanium dioxide, titanium dioxide and nano-silicon dioxide, and grinding for 9 minutes to obtain a mixture A;

[0054] Step (2), adding mixture A into a blender to mix with the remaining components, and stirring at high speed for 18 minutes to obtain a solvent dye.

[0055] Example 6

[0056] A highly dispersed solvent dye, the components and contents of the solvent dye are as follows, calculated by weight:

[0057] 7.2 parts of phthalocyanine, 32 parts of solvent, 1.4 parts of polyvinyl alcohol, 5.4 parts of composite titanium dioxide, 2.7 parts of titanium dioxide, 2.7 parts of dispersant, 2 parts of surfactant, 1 part of leveling agent, 3 parts of nano-silicon dioxide, 0.6 parts of silicone oil, 0.8 parts of cyclodextrin, and 1.5 parts of ethylenediaminetetraacetic acid.

[0058] The solvent is ethyl acetate; the phthalocyanine is tetracarboxyl copper phthalocyanine; the surfactant is polyethyleneimine; and the dispersant is tartaric acid.

[0059] The preparation method of the above highly dispersed solvent dye comprises the following steps:

[0060] Step (1), mixing phthalocyanine, composite titanium dioxide, titanium dioxide and nano-silicon dioxide, and grinding for 10 minutes to obtain a mixture A;

[0061] Step (2), adding mixture A into a blender to mix with the remaining components, and stirring at high speed for 20 minutes to obtain a solvent dye.

[0062] Comparative Example 1

[0063] Same as Example 1, except that composite titanium dioxide, nano silicon dioxide and polyvinyl alcohol are not added.

[0064] Comparative Example 2

[0065] Same as Example 4, except that composite titanium dioxide, nano silicon dioxide and polyvinyl alcohol were not added.

[0066] The above Examples 1-6 and Comparative 1-2 were tested for dispersibility, and the results were as follows:

[0067] Weigh 100 ml of sample dye, put it into a constant temperature water bath at 60℃, heat it, stack the medium-speed filter paper on the fast filter paper, put it into a porcelain funnel, press it tightly, pour the sample dye heated in the water bath into the porcelain funnel, filter it until the appearance of the filter paper changes from wet to dry, stop filtering, record the time, take out the upper filter paper and dry it naturally, then rate it. The results are shown in the following table:

[0068]

[0069]

[0070] In summary, the solvent dye prepared by the present invention has high dispersibility.

[0071] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0072] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A highly dispersed solvent dye, characterized in that: In parts by mass, the components and contents of the solvent dye are as follows: 2.1-7.2 parts of phthalocyanine, 17-32 parts of solvent, 0.8-1.4 parts of polyvinyl alcohol, 2.2-5.4 parts of composite titanium dioxide, 1.1-2.7 parts of titanium dioxide, 0.6-2.7 parts of dispersant, 1-2 parts of surfactant, 0.4-1 part of leveling agent, and 1-3 parts of nano-silicon dioxide.

2. A highly dispersed solvent dye according to claim 1, characterized in that: The solvent dye also includes the following components in parts by mass: 0.3-0.6 parts of silicone oil, 0.2-0.8 parts of cyclodextrin, and 0.5-1.5 parts of ethylenediaminetetraacetic acid.

3. A highly dispersed solvent dye according to claim 1, characterized in that: The solvent is one or more of ethylene glycol ethyl ether, ethylene glycol, and ethyl acetate.

4. A highly dispersed solvent dye according to claim 1, characterized in that: The phthalocyanine is one or more of tetraaminophthalocyanine zinc, tetracarboxylphthalocyanine cobalt, and tetracarboxylphthalocyanine copper.

5. A highly dispersed solvent dye according to claim 1, characterized in that: The surfactant is one or more of sodium dodecylbenzene sulfonate, alkylphenol polyoxyethylene ether, and polyethyleneimine.

6. A highly dispersed solvent dye according to claim 1, characterized in that: The dispersant is one or more of citric acid and tartaric acid.

7. The method for preparing a highly dispersed solvent dye according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step (1), mixing phthalocyanine, composite titanium dioxide, titanium dioxide and nano-silicon dioxide, and grinding for 8 to 10 minutes to obtain a mixture A; Step (2), adding mixture A into a blender to mix with the remaining components, and stirring at high speed for 15 to 20 minutes to obtain a solvent dye.

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