Liquid dye for blended fabric and preparation method

Abstract

The invention provides a liquid dye for blended fabrics and a preparation method thereof. The liquid dye comprises the following components in parts by mass: 53-60 parts of a component A with a structure as shown in a formula (I), 7-13 parts of a component B with a structure as shown in a formula (II), 40-45 parts of a component C with a structure as shown in a formula (III), 20-90 parts of a dispersing agent, 2-4 parts of 2-amino-4-acetamino anisole, 1-3 parts of an anionic etherifying agent, 8-15 parts of an auxiliary agent A, 10-25 parts of an auxiliary agent B and 100-400 parts of water, the liquid dye prepared by adopting a high-efficiency grinding and auxiliary agent compounding technology is good in product fluidity and high in anti-settling stability, and does not generate agglomeration and spots within one year. The dust pollution of the traditional dye is solved, the product is convenient to use, and the working environment is greatly improved; the dyeing performance is excellent, and various printing and dyeing color fastnesses are good.

Description

Technical Field

[0001] The invention belongs to the technical field of textiles, and in particular relates to a liquid dye for blended fabrics and a preparation method thereof. Background Art

[0002] Blended fabrics are fabrics made from two or more different types of fibers, such as cotton and polyester, wool and nylon, etc. Since the fibers contained in blended fabrics may have different chemical properties, special attention needs to be paid when dyeing to ensure that all fibers can be evenly colored and maintain good color fastness. The concept of energy conservation, emission reduction and green environmental protection is increasingly advocated by people. If the high-pollution, high-energy consumption printing and dyeing industry wants to continue to survive and develop, it must improve technology, save costs and reduce pollution.

[0003] Black disperse dye is a dark-colored variety with a relatively large amount of usage. The light fastness of conventional black disperse dye varieties on the market, such as Disperse Black ECO, on blended fabrics is far from meeting the requirements of some major brand owners; foreign high-sun black, such as Huntsman's Black HL, has a light fastness of more than level 7, but its dye strength is very shallow, and the dyeing cost is high, which is not suitable for dyeing blended fabrics. Patent CN201510121488.8 relates to a black disperse dye composition, black disperse dye and its use, which has good coverage, light fastness of more than level 5, and other color fastnesses are excellent, and is particularly suitable for dyeing polyester microfibers. However, the composition also has a poor dyeing effect on blended fabrics.

[0004] Therefore, there is an urgent need for a liquid dye and a preparation method for blended fabrics. Summary of the invention

[0005] The object of the present invention is to provide a liquid dye for blended fabrics and a preparation method thereof.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A liquid dye for blended fabrics, comprising the following components in parts by mass: 53-60 parts of component A having a structure as shown in formula (I), 7-13 parts of component B having a structure as shown in formula (II), 40-45 parts of component C having a structure as shown in formula (III), 20-90 parts of a dispersant, 2-4 parts of 2-amino-4-acetamidoanisole, 1-3 parts of an anionic etherifying agent, 8-15 parts of an auxiliary agent A, 10-25 parts of an auxiliary agent B and 100-400 parts of water;

[0008] The preparation method of auxiliary agent A is as follows:

[0009] Step S1: 1 part by mass of methacrylic acid, 1.2-1.5 parts by mass of 2-hydroxyethyl acrylate and 7-9 parts by mass of water are mixed, the mixture is heated to 57-62° C. and stirred for 10-20 min to obtain a mixture a;

[0010] Step S2: 0.03-0.06 parts by mass of ammonium sulfate and 0.1 parts by mass of water are mixed, the temperature is raised to 27-32° C., and stirred for 10-20 minutes to obtain a mixture b;

[0011] Step S3, mixing 1 part by mass of water, 0.2-0.3 parts by mass of ethanol, 0.03-0.05 parts by mass of sodium bisulfite and 0.8-0.9 parts by mass of styrene, and heating to 78-82° C. to obtain a mixture c;

[0012] Step S4, adding mixture a and mixture b to mixture c in sequence, reacting at 78-82°C for 4-6 hours, adjusting the pH to 7.0 after the reaction is complete, filtering and washing with water, and drying the filter cake to obtain additive A;

[0013]

[0014] The light fastness of the black disperse dye composed of component A as shown in formula (I), component B as shown in formula (II), and component C as shown in formula (III) to the blended fabric is not ideal. The present invention can improve the light fastness of the above black disperse dye to the blended fabric by adding auxiliary A. The copolymer in auxiliary A can provide an additional conjugated system, which helps to absorb ultraviolet rays; the copolymer can form hydrogen bonds with the blended fabric, enhance adhesion, and the dye is less likely to fall off, thereby improving the color fastness. At the same time, the color fastness to washing is also improved under this condition. However, the color fastness to rubbing of the liquid dye with auxiliary A added is not ideal.

[0015] Furthermore, the dispersant is selected from one or more of dispersant NNO, dispersant MF and sodium lignin sulfonate.

[0016] In order to improve the sublimation color fastness of the liquid dye, further, the dispersant is a mixture of dispersant NNO, dispersant MF and sodium lignin sulfonate in a mass ratio of 1:1.3-1.6:0.5-0.8.

[0017] Furthermore, the auxiliary agent B is selected from one or more of sodium secondary alkyl diester sulfonate, isomeric tridecanol polyoxyethylene ether, and isomeric decanol ether phosphate.

[0018] Furthermore, the auxiliary agent B is a mixture of sodium secondary alkyl diester sulfonate, a surfactant containing a polyether chain, and isomeric decanol ether phosphate in a mass ratio of 1.4-1.7:0.2-0.5:1.

[0019] Furthermore, the preparation method of the surfactant containing polyether chain is:

[0020] (1) 100 parts by weight of palmitic acid and 88-90 parts by weight of thionyl chloride are mixed, reacted at 57-60° C. for 6-10 hours, cooled to 25-30° C., 90-95 parts by weight of bromine are added, reacted at 45-47° C. for 9-10 hours, allowed to stand at 2-4° C. in a nitrogen atmosphere for 3-5 hours, washed with water for 2-4 times, extracted with hexane for 2-3 times, and obtained product 1;

[0021] (2) 10 parts by weight of product 1, 2-3 parts by weight of 1,6-hexanediol and 4-5 parts by weight of sodium carbonate were added to 30-35 parts by weight of dimethylformamide, reacted at 52-55° C. for 12-15 hours, acetone was added for precipitation, and the organic layer was decompressed at 152-155° C. for 1-2 hours to obtain product 2;

[0022] (3) at 0°C, dissolving 5 parts by weight of product 2 in 12-15 parts by weight of tetrahydrofuran, adding 1.2-1.5 parts by weight of lithium aluminum hydride, reacting at 25-28°C for 2-3 hours, adding 5-7 parts by weight of ethanol, and extracting with ether for 2-4 times to obtain product 3;

[0023] (4) Add 500 parts by mass of product 3 and 0.8-1.3 parts by mass of potassium hydroxide into an autoclave, heat to 142-145° C., add 90-95 parts by mass of propylene oxide, maintain the temperature for 40-50 minutes, cool, and adjust the pH value to 7 to obtain a surfactant containing a polyether chain.

[0024] Furthermore, the pH value was adjusted to 7 using acetic acid.

[0025] The invention improves the rubbing color fastness of the liquid dye by adding an auxiliary agent B to the liquid dye. The auxiliary agent B can improve the good compatibility between the dye component and the fiber, promote the uniform distribution of the dye component on the fiber surface, improve the permeability and distribution uniformity of the dye component in the fabric fiber, and enhance the combination of the dye component and the fabric fiber. At the same time, the addition of the auxiliary agent B also improves the storage stability of the liquid fuel.

[0026] Furthermore, the anionic etherifying agent is one or more of ethylene oxide, propylene oxide and epichlorohydrin.

[0027] Furthermore, the anionic etherifying agent is a mixture of ethylene oxide, propylene oxide and epichlorohydrin in a mass ratio of 1.5-1.8:1:0.3-0.6.

[0028] The present invention also provides a method for preparing a liquid dye for blended fabrics. The method comprises the following steps: mixing the components, grinding and dispersing the components to obtain the liquid dye for blended fabrics.

[0029] 2-Amino-4-acetamidoanisole, CAS: 6375-47-9. Hubei Huiheyuan Chemical Co., Ltd.

[0030] The dye monomer compounds of formula (I) to formula (III) used in the present invention can be conveniently synthesized in a manner well known to those skilled in the art, such as the methods described in patents CN1563204, US3502645, B1356695, CN1036974 or similar methods.

[0031] Compared with the prior art, the advantages and beneficial effects of the present invention are:

[0032] 1. The liquid dye prepared by the present invention adopts high-efficiency grinding and auxiliary compounding technology. The product has good fluidity, strong anti-sedimentation stability, and will not produce coagulation and spotting within one year. The dust pollution of traditional dyes has been solved, the product is easy to use, and the working environment is greatly improved. It is suitable for high temperature and high pressure dyeing, has excellent light fastness and sublimation fastness, and has little pollution to fibers. The liquid dye is suitable for dyeing blended fabrics.

[0033] 2. Under the same dyeing concentration, the color of liquid dyeing residual liquid is lighter than that of powdered dyeing residual liquid, and the COD of liquid disperse dyeing residual liquid is significantly reduced. At high concentration dyeing, the COD of liquid disperse dyeing residual liquid is more than 60% lower than that of powdered disperse dyeing residual liquid, which greatly reduces the dyeing wastewater treatment cost of printing and dyeing enterprises.

[0034] 3. The present invention can improve the light fastness of the above black disperse dye to the blended fabric by adding auxiliary agent A. At the same time, the color fastness to washing is also improved under this condition.

[0035] 4. The present invention improves the rubbing color fastness of the liquid dye by adding the auxiliary agent B. At the same time, the addition of the auxiliary agent B also improves the storage stability of the liquid fuel. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Schematic diagram of the dye residual solution with different dye concentrations. DETAILED DESCRIPTION

[0037] 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 them. 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.

[0038] Example 1

[0039] This embodiment provides a liquid dye for blended fabrics, comprising the following components in parts by weight: 55 parts of component A having a structure as shown in formula (I), 9 parts of component B having a structure as shown in formula (II), 43 parts of component C having a structure as shown in formula (III), 80 parts of a dispersant, 3 parts of 2-amino-4-acetamidoanisole, 2 parts of an anionic etherifying agent, 14 parts of an auxiliary agent A, 22 parts of an auxiliary agent B, and 280 parts of water;

[0040]

[0041] The preparation method of auxiliary agent A is as follows:

[0042] Step S1: 1 part by mass of methacrylic acid, 1.4 parts by mass of 2-hydroxyethyl acrylate and 8 parts by mass of water were mixed, the mixture was heated to 60° C. and stirred for 15 min to obtain a mixture a;

[0043] Step S2: 0.05 parts by mass of ammonium sulfate and 0.1 parts by mass of water were mixed, the temperature was raised to 29° C., and stirred for 15 minutes to obtain a mixture b;

[0044] Step S3, 1 part by mass of water, 0.24 parts by mass of ethanol, 0.04 parts by mass of sodium bisulfite and 0.86 parts by mass of styrene are mixed, and the mixture is heated to 80° C. to obtain a mixture c;

[0045] Step S4, adding mixture a and mixture b to mixture c in sequence, reacting at 80° C. for 5 h, adjusting the pH to 7.0 after the reaction is complete, filtering and washing with water, and drying the filter cake to obtain additive A.

[0046] The dispersant is a mixture of dispersant NNO, dispersant MF and sodium lignin sulfonate in a mass ratio of 1:1.5:0.7.

[0047] The auxiliary agent B is a mixture of sodium secondary alkyl diester sulfonate, a surfactant containing a polyether chain, and isomeric decanol ether phosphate in a mass ratio of 1.6:0.4:1.

[0048] The preparation method of the surfactant containing polyether chain is as follows:

[0049] (1) 100 parts by weight of palmitic acid and 89 parts by weight of thionyl chloride were mixed, reacted at 58° C. for 8 h, cooled to 27° C., 92 parts by weight of bromine were added, reacted at 46° C. for 9.5 h, allowed to stand at 3° C. in a nitrogen atmosphere for 4 h, washed with water 3 times, extracted with hexane 3 times, and obtained product 1;

[0050] (2) 10 parts by weight of product 1, 2.4 parts by weight of 1,6-hexanediol and 4.4 parts by weight of sodium carbonate were added to 32 parts by weight of dimethylformamide, reacted at 54° C. for 14 h, acetone was added for precipitation, and the organic layer was decompressed at 153° C. for 1.5 h to obtain product 2;

[0051] (3) Dissolve 5 parts by mass of product 2 in 14 parts by mass of tetrahydrofuran at 0°C, add 1.4 parts by mass of lithium aluminum hydride, react at 26°C for 2.5 hours, add 6 parts by mass of ethanol, and extract with ether three times to obtain product 3;

[0052] (4) 500 parts by mass of product 3 and 1 part by mass of potassium hydroxide were added to an autoclave, heated to 144° C., 93 parts by mass of propylene oxide were added, the temperature was maintained for 45 minutes, cooled, and the pH value was adjusted to 7 to obtain a surfactant containing a polyether chain.

[0053] Adjust pH to 7 using acetic acid.

[0054] The anionic etherifying agent is a mixture of ethylene oxide, propylene oxide and epichlorohydrin in a mass ratio of 1.6:1:0.5.

[0055] The invention discloses a method for preparing a liquid dye for blended fabrics, comprising the following steps: mixing various components, grinding and dispersing, and obtaining the liquid dye for blended fabrics.

[0056] Example 2

[0057] This embodiment provides a liquid dye for blended fabrics, comprising the following components in parts by weight: 53 parts of component A having a structure as shown in formula (I), 7 parts of component B having a structure as shown in formula (II), 40 parts of component C having a structure as shown in formula (III), 60 parts of a dispersant, 2 parts of 2-amino-4-acetamidoanisole, 1 part of an anionic etherifying agent, 13 parts of an auxiliary agent A, 20 parts of an auxiliary agent B, and 270 parts of water;

[0058]

[0059] The preparation method of auxiliary agent A is as follows:

[0060] Step S1: 1 part by mass of methacrylic acid, 1.2 parts by mass of 2-hydroxyethyl acrylate and 7 parts by mass of water were mixed, heated to 57° C. and stirred for 10 min to obtain a mixture a;

[0061] Step S2: 0.03 parts by mass of ammonium sulfate and 0.1 parts by mass of water were mixed, the temperature was raised to 27° C., and stirred for 10 minutes to obtain a mixture b;

[0062] Step S3, 1 part by mass of water, 0.2 parts by mass of ethanol, 0.03 parts by mass of sodium bisulfite and 0.8 parts by mass of styrene are mixed, and the mixture is heated to 78° C. to obtain a mixture c;

[0063] Step S4, adding mixture a and mixture b to mixture c in sequence, reacting at 78° C. for 4 h, adjusting the pH to 7.0 after the reaction is complete, filtering and washing with water, and drying the filter cake to obtain additive A.

[0064] The dispersant is a mixture of dispersant NNO, dispersant MF and sodium lignin sulfonate in a mass ratio of 1:1.3:0.5.

[0065] The auxiliary agent B is a mixture of sodium secondary alkyl diester sulfonate, a surfactant containing a polyether chain, and isomeric decanol ether phosphate in a mass ratio of 1.4:0.2:1.

[0066] The preparation method of the surfactant containing polyether chain is as follows:

[0067] (1) 100 parts by weight of palmitic acid and 88 parts by weight of thionyl chloride were mixed, reacted at 57° C. for 6 h, cooled to 25° C., 90 parts by weight of bromine were added, reacted at 45° C. for 9 h, allowed to stand at 2° C. for 3 h in a nitrogen atmosphere, washed with water twice, extracted with hexane twice, and obtained product 1;

[0068] (2) 10 parts by weight of product 1, 2 parts by weight of 1,6-hexanediol and 4 parts by weight of sodium carbonate were added to 30 parts by weight of dimethylformamide, reacted at 52° C. for 12 h, acetone was added for precipitation, and the organic layer was decompressed at 152° C. for 1 h to obtain product 2;

[0069] (3) Dissolve 5 parts by mass of product 2 in 12 parts by mass of tetrahydrofuran at 0°C, add 1.2 parts by mass of lithium aluminum hydride, react at 25°C for 2 h, add 5 parts by mass of ethanol, and extract twice with ether to obtain product 3;

[0070] (4) 500 parts by mass of product 3 and 0.8 parts by mass of potassium hydroxide were added to an autoclave, heated to 142° C., 90 parts by mass of propylene oxide were added, the temperature was maintained for 40 min, cooled, and the pH value was adjusted to 7 to obtain a surfactant containing a polyether chain.

[0071] Adjust pH to 7 using acetic acid.

[0072] The anionic etherifying agent is a mixture of ethylene oxide, propylene oxide and epichlorohydrin in a mass ratio of 1.5:1:0.3.

[0073] The invention discloses a method for preparing a liquid dye for blended fabrics, comprising the following steps: mixing various components, grinding and dispersing, and obtaining the liquid dye for blended fabrics.

[0074] Example 3

[0075] This embodiment provides a liquid dye for blended fabrics, comprising the following components in parts by weight: 60 parts of component A having a structure as shown in formula (I), 13 parts of component B having a structure as shown in formula (II), 45 parts of component C having a structure as shown in formula (III), 90 parts of a dispersant, 4 parts of 2-amino-4-acetamidoanisole, 3 parts of an anionic etherifying agent, 15 parts of an auxiliary agent A, 25 parts of an auxiliary agent B, and 300 parts of water;

[0076]

[0077]

[0078] The preparation method of auxiliary agent A is as follows:

[0079] Step S1: 1 part by mass of methacrylic acid, 1.5 parts by mass of 2-hydroxyethyl acrylate and 9 parts by mass of water were mixed, heated to 62° C. and stirred for 20 min to obtain a mixture a;

[0080] Step S2: 0.06 parts by mass of ammonium sulfate and 0.1 parts by mass of water were mixed, the temperature was raised to 32° C., and stirred for 20 minutes to obtain a mixture b;

[0081] Step S3, 1 part by mass of water, 0.3 part by mass of ethanol, 0.05 part by mass of sodium bisulfite and 0.9 part by mass of styrene are mixed, and the mixture is heated to 82° C. to obtain a mixture c;

[0082] Step S4, adding mixture a and mixture b to mixture c in sequence, reacting at 82° C. for 6 h, adjusting the pH to 7.0 after the reaction is complete, filtering and washing with water, and drying the filter cake to obtain additive A.

[0083] The dispersant is a mixture of dispersant NNO, dispersant MF and sodium lignin sulfonate in a mass ratio of 1:1.6:0.8.

[0084] The auxiliary agent B is a mixture of sodium secondary alkyl diester sulfonate, a surfactant containing a polyether chain, and isomeric decanol ether phosphate in a mass ratio of 1.7:0.5:1.

[0085] The preparation method of the surfactant containing polyether chain is as follows:

[0086] (1) 100 parts by weight of palmitic acid and 90 parts by weight of thionyl chloride were mixed, reacted at 60° C. for 10 h, cooled to 30° C., 95 parts by weight of bromine were added, reacted at 47° C. for 10 h, allowed to stand at 4° C. for 5 h in a nitrogen atmosphere, washed with water 4 times, extracted with hexane 3 times, and obtained product 1;

[0087] (2) 10 parts by weight of product 1, 3 parts by weight of 1,6-hexanediol and 5 parts by weight of sodium carbonate were added to 35 parts by weight of dimethylformamide, reacted at 55° C. for 15 h, acetone was added for precipitation, and the organic layer was decompressed at 155° C. for 2 h to obtain product 2;

[0088] (3) At 0°C, 5 parts by mass of product 2 was dissolved in 15 parts by mass of tetrahydrofuran, 1.5 parts by mass of lithium aluminum hydride was added, the reaction was carried out at 28°C for 3 h, 7 parts by mass of ethanol was added, and the product was extracted with ether for 4 times to obtain product 3;

[0089] (4) 500 parts by mass of product 3 and 1.3 parts by mass of potassium hydroxide were added to an autoclave, heated to 145° C., 95 parts by mass of propylene oxide were added, the temperature was maintained for 50 min, cooled, and the pH value was adjusted to 7 to obtain a surfactant containing a polyether chain.

[0090] Adjust pH to 7 using acetic acid.

[0091] The anionic etherifying agent is a mixture of ethylene oxide, propylene oxide and epichlorohydrin in a mass ratio of 1.8:1:0.6.

[0092] The invention discloses a method for preparing a liquid dye for blended fabrics, comprising the following steps: mixing various components, grinding and dispersing, and obtaining the liquid dye for blended fabrics.

[0093] Comparative Example 1

[0094] The difference between this comparative example and Example 1 is that: 14 parts of auxiliary agent A and 22 parts of auxiliary agent B are replaced by: 22 parts of auxiliary agent A and 14 parts of auxiliary agent B.

[0095] Comparative Example 2

[0096] The difference between this comparative example and Example 1 is that 14 parts of auxiliary agent A and 22 parts of auxiliary agent B are replaced by 8 parts of auxiliary agent A and 28 parts of auxiliary agent B.

[0097] Comparative Example 3

[0098] The difference between this comparative example and Example 1 is that the dispersant is a mixture of dispersant NNO, dispersant MF and sodium lignin sulfonate in a mass ratio of 1:1:1.

[0099] Comparative Example 4

[0100] The difference between this comparative example and Example 1 is that the auxiliary agent B is a mixture of sodium secondary alkyl diester sulfonate, a surfactant containing a polyether chain, and isomeric decanol ether phosphate in a mass ratio of 1:1:1.

[0101] Comparative Example 5

[0102] The difference between this comparative example and Example 1 is that the preparation method of the surfactant containing a polyether chain is:

[0103] (1) 100 parts by weight of dodecanoic acid and 89 parts by weight of thionyl chloride were mixed, reacted at 58° C. for 8 h, cooled to 27° C., 92 parts by weight of bromine were added, reacted at 46° C. for 9.5 h, allowed to stand at 3° C. in a nitrogen atmosphere for 4 h, washed with water 3 times, extracted with hexane 3 times, and obtained product 1;

[0104] (2) 10 parts by weight of product 1, 2.4 parts by weight of 1,8-octanediol and 4.4 parts by weight of sodium carbonate were added to 32 parts by weight of dimethylformamide, reacted at 54° C. for 14 h, acetone was added for precipitation, and the organic layer was decompressed at 153° C. for 1.5 h to obtain product 2;

[0105] (3) Dissolve 5 parts by mass of product 2 in 14 parts by mass of tetrahydrofuran at 0°C, add 1.4 parts by mass of lithium aluminum hydride, react at 26°C for 2.5 hours, add 6 parts by mass of ethanol, and extract with ether three times to obtain product 3;

[0106] (4) 500 parts by mass of product 3 and 1 part by mass of potassium hydroxide were added to an autoclave, heated to 144° C., 93 parts by mass of ethylene oxide were added, the temperature was maintained for 45 minutes, cooled, and the pH value was adjusted to 7 with acetic acid to obtain a surfactant containing a polyether chain.

[0107] Comparative Example 6

[0108] The difference between this comparative example and Example 1 is that the auxiliary agent B is a mixture of sodium secondary alkyl diester sulfonate, sodium dodecylbenzene sulfonate and isomeric decanol ether phosphate in a mass ratio of 1.7:0.5:1.

[0109] Performance Testing

[0110] The blended fabrics were dyed using the liquid dyes of Examples 1-3 and Comparative Examples 1-6, respectively, and the performance tests were performed as follows:

[0111] Take 100g of untreated polyester-cotton blended fabric, put it into a high-temperature and high-pressure overflow dyeing machine, put the untreated pure polyester fabric into the dyeing machine for circulation, add appropriate amounts of sodium carbonate and sodium hydroxide, adjust the pH to 9, add 3 parts by mass of refining agent HE0815, add liquid dye and control the dyeing concentration to 2% (that is, the proportion of liquid dye added to the mass of dyeing water is 2%), heat it to 80℃ for 20min, then heat it to 130℃ for 50min, keep it warm for 60min, cool it to 80℃ to remove the dyeing residual liquid, rinse it with 80℃ hot water and then wash it with cold water, then take out the cloth and dry it to get the dyed cloth sample. Carry out the following tests:

[0112] Color fastness to sunlight: The test is carried out in accordance with ISO105B02:2000;

[0113] Color fastness to washing: the test is carried out in accordance with GB / T3921-1997.

[0114] Color fastness to rubbing: in accordance with GB / T3920-2008.

[0115] Sublimation color fastness: in accordance with GB / T5718-1997, (180℃, 30S).

[0116] Storage stability: Store the liquid dye at room temperature (25°C) away from light for one year and observe whether there is coagulation or spotting. If there is no coagulation or spotting, it is recorded as passed; otherwise, it is recorded as failed.

[0117] The test results are shown in Table 1.

[0118] Table 1 Performance test results

[0119]

[0120] According to the above method, the COD data of the dyeing residual liquid with different dyeing concentrations (dyeing concentration = liquid dye added mass / dyeing water mass * 100%) were measured. The results are shown in Table 2, and the COD data of the dyeing residual liquid with different dyeing concentrations are shown in Table 2. Figure 1 .

[0121] Table 2 COD data of dyeing residual liquid at different dyeing concentrations (mg / L)

[0122] Serial number Staining concentration (%) COD data (mg / L) 1 0.5 251 2 1 272 3 2 371 4 3 496 5 4 600 6 5 690

[0123] It can be seen from the above performance test results that Examples 1-3 have good dyeing effects, especially Example 1 has the most outstanding comprehensive performance, which is mainly due to the synergistic effect of various components in the liquid fuel.

[0124] The comparative examples, however, are significantly inferior to the examples in terms of corresponding performance tests because they do not adopt the necessary technical solutions. In comparative examples 1-2, the addition amounts of auxiliary agent A and auxiliary agent B are changed, and it can be seen that the dyeing effect is reduced, indicating that the two components have a synergistic effect in the system. In comparative examples 4-6, auxiliary agent B is not used, and the results show that the color fastness to rubbing is reduced and the storage stability is also poor. The above experimental results further prove the importance of the technical solution defined in the present invention for its technical effect.

Claims

1. A liquid dye for blended fabrics, characterized in that: The invention comprises the following components in parts by weight: 53-60 parts of component A having a structure as shown in formula (I), 7-13 parts of component B having a structure as shown in formula (II), 40-45 parts of component C having a structure as shown in formula (III), 20-90 parts of a dispersant, 2-4 parts of 2-amino-4-acetamidoanisole, 1-3 parts of an anionic etherifying agent, 8-15 parts of an auxiliary agent A, 10-25 parts of an auxiliary agent B and 100-400 parts of water; The preparation method of auxiliary agent A is as follows: Step S1: 1 part by mass of methacrylic acid, 1.2-1.5 parts by mass of 2-hydroxyethyl acrylate and 7-9 parts by mass of water are mixed, the mixture is heated to 57-62° C. and stirred for 10-20 minutes to obtain a mixture a; Step S2: 0.03-0.06 parts by mass of ammonium sulfate and 0.1 parts by mass of water are mixed, the temperature is raised to 27-32° C., and stirred for 10-20 minutes to obtain a mixture b; Step S3, mixing 1 part by mass of water, 0.2-0.3 parts by mass of ethanol, 0.03-0.05 parts by mass of sodium bisulfite and 0.8-0.9 parts by mass of styrene, and heating to 78-82° C. to obtain a mixture c; Step S4, adding mixture a and mixture b to mixture c in sequence, reacting at 78-82°C for 4-6 hours, adjusting the pH to 7.0 after the reaction is complete, filtering and washing with water, and drying the filter cake to obtain additive A; 2. The liquid dye for blended fabrics according to claim 1, characterized in that: The dispersant is selected from one or more of dispersant NNO, dispersant MF and sodium lignin sulfonate.

3. The liquid dye for blended fabrics according to claim 2, characterized in that: The dispersant is a mixture of dispersant NNO, dispersant MF and sodium lignin sulfonate in a mass ratio of 1:1.3-1.6:0.5-0.

8.

4. The liquid dye for blended fabrics according to claim 1, characterized in that: The auxiliary agent B is selected from one or more of sodium secondary alkyl diester sulfonate, isomeric tridecanol polyoxyethylene ether, and isomeric decanol ether phosphate.

5. The liquid dye for blended fabrics according to claim 4, characterized in that: The auxiliary agent B is a mixture of sodium secondary alkyl diester sulfonate, a surfactant containing a polyether chain, and isomeric decanol ether phosphate in a mass ratio of 1.4-1.7:0.2-0.5:

1.

6. The liquid dye for blended fabrics according to claim 5, characterized in that: The preparation method of the surfactant containing polyether chain is as follows: (1) 100 parts by weight of palmitic acid and 88-90 parts by weight of thionyl chloride are mixed, reacted at 57-60° C. for 6-10 hours, cooled to 25-30° C., 90-95 parts by weight of bromine are added, reacted at 45-47° C. for 9-10 hours, allowed to stand at 2-4° C. in a nitrogen atmosphere for 3-5 hours, washed with water for 2-4 times, extracted with hexane for 2-3 times, and obtained product 1; (2) 10 parts by weight of product 1, 2-3 parts by weight of 1,6-hexanediol and 4-5 parts by weight of sodium carbonate were added to 30-35 parts by weight of dimethylformamide, reacted at 52-55° C. for 12-15 hours, acetone was added for precipitation, and the organic layer was decompressed at 152-155° C. for 1-2 hours to obtain product 2; (3) at 0°C, dissolving 5 parts by weight of product 2 in 12-15 parts by weight of tetrahydrofuran, adding 1.2-1.5 parts by weight of lithium aluminum hydride, reacting at 25-28°C for 2-3 hours, adding 5-7 parts by weight of ethanol, and extracting with ether for 2-4 times to obtain product 3; (4) Add 500 parts by mass of product 3 and 0.8-1.3 parts by mass of potassium hydroxide into an autoclave, heat to 142-145° C., add 90-95 parts by mass of propylene oxide, maintain the temperature for 40-50 minutes, cool, and adjust the pH value to 7 to obtain a surfactant containing a polyether chain.

7. The liquid dye for blended fabrics according to claim 6, characterized in that: Adjust pH to 7 using acetic acid.

8. The liquid dye for blended fabrics according to claim 1, characterized in that: The anionic etherifying agent is one or more of ethylene oxide, propylene oxide and epichlorohydrin.

9. The liquid dye for blended fabrics according to claim 8, characterized in that: The anionic etherifying agent is a mixture of ethylene oxide, propylene oxide and epichlorohydrin in a mass ratio of 1.5-1.8:1:0.3-0.

6.

10. A method for preparing a liquid dye for blended fabrics according to any one of claims 1 to 9, characterized in that: The preparation method comprises the following steps: mixing the components, grinding and dispersing them to obtain a liquid dye for blended fabrics.

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