Compound reactive dye ink with high fixation rate and preparation method thereof

By combining cationic compounds and stabilizers in the reactive dye ink, the adsorption and fixation problems of reactive dyes on the cellulose fiber substrate are solved, the inkjet printing process is simplified, the color fixation rate and fluency are improved, and the efficient inkjet printing effect is achieved.

CN120465304APending Publication Date: 2025-08-12ZHEJIANG SCI-TECH UNIV
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Patent Information

Application Number
CN202510544825.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-28
Publication Date
2025-08-12

AI Technical Summary

Technical Problem

In the existing inkjet printing process, the adsorption, diffusion and fixation effect of reactive dyes on cellulose fiber substrates is poor, resulting in low color fixation rate, and the two-step process flow is lengthy and energy consumption is high, which affects the inkjet printing effect and production efficiency.

Method used

By combining cationic compounds into the reactive dye ink, the electrostatic repulsion between the anionic reactive dye and the cellulose fiber substrate is reduced, and a stabilizer is added to form micelles to enhance the stability of the ink and simplify the process flow.

Benefits of technology

It improves the adsorption, diffusion and fixation effect of reactive dyes on cellulose fiber substrates, shortens the process flow, improves the color fixation rate, and maintains the smoothness of printing and storage stability.

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Abstract

The invention relates to the technical field of ink-jet printing, and discloses compound high-fixation-rate reactive dye ink and a preparation method thereof. According to the invention, in a compound ink system, the cationic compound forms an association compound with the anionic reactive dye due to the characteristic of positive charges, so that the electrostatic repulsion effect between the association compound of the cationic compound and the anionic reactive dye and fibers (cellulose fibers, protein fibers and the like) with negative charges is shielded; diffusion and fixation of reactive dye associates in the fibers are assisted, so that the fixation rate of reactive dye ink is improved, and the content of hydrolyzed dyes in wastewater is reduced. Meanwhile, by utilizing the solubilizing and stabilizing effects of micelles formed by the stabilizer on the cationic compound and the anionic reactive dye association compound, the stability of the compound high-fixation-rate reactive dye ink is improved, and the research has a very good popularization value.
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Description

Technical Field

[0001] The present invention relates to the technical field of inkjet printing, in particular to a compounded high-fixation-rate reactive dye ink and a preparation method thereof. Background Art

[0002] Inkjet printing technology, a high-tech product that has evolved with the continuous development of computer technology, integrates mechanical, computer, and electronic information technologies. It boasts high production efficiency, a short process flow, no platemaking required, suitability for small batches, personalized customization, and a clean and environmentally friendly approach. It frees textile printing from the high energy consumption and high pollution associated with traditional flat-screen or rotary screen printing processes, enabling a highly efficient, energy-efficient, and environmentally friendly inkjet printing process. This presents unprecedented development opportunities for textile printing and dyeing.

[0003] Ink properties are a crucial factor influencing the effectiveness of inkjet printing, determining the fineness of pattern patterns, apparent color yield, penetration, color fixation, and color fastness of printed fabrics. Currently, the overall performance of Chinese inkjet printing inks lags behind similar foreign products, primarily in terms of droplet morphology uniformity, printing consistency, ink penetration, and color fixation. As a result, domestic inkjet printing plants often purchase their inks from foreign companies, resulting in high prices. This increases production costs and reduces profitability for domestic inkjet printing companies, hindering the vigorous development of my country's inkjet printing industry.

[0004] Reactive dye inks are a common type of ink used in inkjet printing. They offer vibrant colors, excellent migration properties, and high color fastness, making them commonly used in inkjet printing of cellulose and protein fibers. In inkjet printing on cellulose substrates, due to the negative charge of cellulose in aqueous solution, the water-soluble groups in the reactive dye molecules ionize, making the reactive dye negatively charged. The electrostatic repulsion between the reactive dye and the cellulose substrate hinders the adsorption, diffusion, and fixation of the reactive dye, affecting the final printing quality of the inkjet printed product. In order to improve the inkjet printing effect of anionic reactive dyes on cellulose fiber substrates, a two-step process is usually adopted in which the fabric is first cationized and then inkjet printed. The specific steps are as follows: first, cationic groups are introduced into the cellulose fiber substrate by padding or dipping, and cellulose fibers containing cationic groups are obtained through water washing, acid washing, water washing and drying processes; the cellulose fibers containing cationic groups are then treated with sodium bicarbonate, urea and paste on the fabric by padding and sizing, and after drying, reactive dye ink is sprayed on the above fabric, and the reactive dye and cellulose fiber undergo a fixation reaction under steaming conditions, and finally the final inkjet printed fabric is obtained through water washing, soaping and drying steps. The above two-step inkjet printing process can improve the fixation rate of reactive dye ink and reduce the content of hydrolyzed dye in printing wastewater, but the process is lengthy, involves multiple washing and baking processes, and consumes a lot of energy and water resources. At present, there are no reports on the research on compounding cationic compounds into reactive dye ink systems to prepare stable and compounded reactive dye inks with high fixation rate.

[0005] Therefore, it is of great industrial significance to develop a compound reactive dye ink with high fixation rate to shorten the two-step inkjet printing process and improve the inkjet printing effect of reactive dye ink. Summary of the Invention

[0006] In order to solve the technical problems of the long process flow and high energy consumption of the two-step process and to improve the color fixation rate of the reactive dye ink, the present invention provides a compounded reactive dye ink with a high color fixation rate and a preparation method thereof. The ink has the characteristics of good storage stability and a high color fixation rate. The compounded reactive dye ink with a high color fixation rate of the present invention reduces the electrostatic repulsion between the anionic reactive dye and the cellulose fiber substrate by the cationic compound in the compounding system, thereby improving the adsorption, diffusion and fixation of the reactive dye on the cellulose fiber substrate. Since the compounded reactive dye ink with a high color fixation rate already contains cationic compounds, the process flow is shortened compared to the two-step process, and the effect after finishing, that is, the apparent color yield and color fixation rate of the fabric are equal to or slightly higher than the two-step process.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] The present invention provides a compounded high-fixation-rate reactive dye ink, which is composed of the following components by mass percentage:

[0009] 1% to 50% of cationic compound, 5% to 50% of reactive dye, 0.1% to 5% of stabilizer, 0% to 20% of cosolvent, 0% to 20% of moisturizing agent, 0% to 10% of viscosity regulator, 0% to 5% of surface tension regulator, 0% to 10% of pH value regulator, 0% to 2% of antibacterial agent, and the balance is deionized water.

[0010] The composite high-fixation-rate reactive dye ink contains 1.0 to 60.0 wt% of a cationic compound. The composite high-fixation-rate reactive dye ink prepared within this concentration range exhibits good storage stability and smooth printing. When the amount of the cationic compound is too low, the electrostatic repulsion between the reactive dye and the cellulose fiber substrate cannot be effectively shielded. When the amount of the cationic compound is too high, the electrostatic repulsion between the cationic compound and the anionic reactive dye causes dye molecules to aggregate or precipitate, deteriorating the storage stability and smooth printing of the composite ink and affecting the final inkjet printing product.

[0011] The cationic compound contains a positively charged group in its molecular structure, such as one or more of an amino group, a quaternary ammonium group, a quaternary phosphonium group, and a guanidine group structure. At the same time, the cationic compound may also contain a reactive group, such as one or more of a carboxylic acid group, an acid anhydride, an acid halide, an olefin, an epoxy group, a pyrimidine, and an s-triazine structure. The molecule has a number average molecular weight of 50-40,000, specifically tetrabutylammonium bromide, octylbutyldimethylammonium bromide, octylhexyldimethylammonium bromide, dioctyldimethylammonium bromide, polyethyleneimine, polydiallyldimethylammonium chloride, poly (dimethylaminopropylmethacrylamide-butylammonium bromide), poly (dimethylaminopropylmethacrylamide-hexylammonium bromide), poly (dimethylaminopropylmethacrylamide-benzylammonium bromide), 2,3-epoxypropyltrimethylammonium chloride, 2 , 3-epoxypropyltriethylammonium chloride, 2,3-epoxypropyldimethylbutane ammonium chloride, 2,3-epoxypropyldimethyloctanammonium chloride, 3-chloro-2-hydroxypropyltrimethylammonium chloride, 3-chloro-2-hydroxypropyltriethylammonium chloride, 3-chloro-2-hydroxypropyldimethylbutane ammonium chloride, 3-chloro-2-hydroxypropyldimethyloctanammonium chloride, 3-chloro-2-hydroxypropyldimethyldodecyl ammonium chloride, 3-chloro-2-hydroxypropyldimethyloctadecyl ammonium chloride, dimethylaminopropylmethacrylamide-butylammonium bromide, dimethylaminopropylmethacrylamide-hexylammonium bromide, dimethylaminopropylmethacrylamide-benzylammonium chloride, monochloro-s-triazine type quaternary ammonium salt compound, carboxylic acid type quaternary phosphonium group, pyrimidine type guanidinium compound, azetidine cationic compound and choline chloride or a mixture of more thereof.

[0012] The compounded high-fixation-rate reactive dye ink contains 0.1 to 5% of a stabilizer. When the amount of the stabilizer is too low, micelles cannot be formed or the electrostatic effect of the stabilizer itself is weak, and the stability of the compounded high-fixation-rate reactive dye ink cannot be guaranteed. When the amount of the stabilizer is too high, the micelle concentration is too high or the micelles are electrostatically bonded with the cationic compound and the reactive dye, resulting in poor stability of the compounded high-fixation-rate reactive dye ink.

[0013] Preferably, the reactive dye is one or more of reactive blue 19, reactive red 198, reactive orange 16, reactive green 12, reactive yellow 17, reactive blue 49, reactive black 31, reactive red 24, reactive blue 72, reactive gray 4, reactive violet 23, reactive yellow 145, reactive orange 7, reactive red 141, reactive blue 4, reactive black 5, reactive red 120, reactive green 19, reactive violet 33, reactive yellow 95, reactive blue 221, reactive brown 21, reactive black 39, reactive red 195, reactive yellow 84, reactive blue 13, reactive orange 122, reactive red 11, reactive blue 21, reactive yellow 37, reactive black 8, reactive blue 194, reactive red 194, reactive violet 5, reactive orange 84, reactive green 8, reactive yellow 176, reactive red 218, reactive brown 9, and reactive yellow 160.

[0014] Preferably, the stabilizer is one or a mixture of polyvinyl pyrrolidone, hydroxyethyl cellulose, carboxymethyl cellulose, sodium salt of alkylnaphthalene sulfonate, sodium salt of lignin sulfonate, sodium dodecyl sulfonate, sodium lauryl sulfate, cetyltrimethylammonium bromide, dodecyltrimethylammonium bromide, OP-emulsifier, Surfynol 465 and Tween-80.

[0015] Preferably, the cosolvent is one or a mixture of ethylene glycol, glycerol, urea, diethylene glycol, formamide, thiodiethanol and polyethylene glycol.

[0016] Preferably, the moisturizing agent is one or a mixture of glycerol, 1,2-propylene glycol, 1,3-butylene glycol, ethylene glycol, diethylene glycol and polyethylene glycol.

[0017] Preferably, the viscosity modifier is one or a mixture of diethylene glycol ethyl ether, dimethyl sulfoxide, 1,2-propylene glycol, triethylene glycol, ethylene glycol, glycerol and polyethylene glycol 1000.

[0018] Preferably, the surface tension regulator is one or a mixture of sodium dodecyl sulfate, Surfynol 465, sodium lauryl sulfate, sodium stearate, sodium laurate, cetyltrimethylammonium bromide, dodecyltrimethylammonium bromide, OP-emulsifier and Tween-80.

[0019] Preferably, the pH adjuster is one or a mixture of hydrochloric acid, sulfuric acid, citric acid, monoethanolamine, diethanolamine, triethanolamine, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, disodium hydrogen phosphate, sodium dihydrogen phosphate, sodium bicarbonate, sodium carbonate and sodium hydroxide.

[0020] Preferably, the antibacterial agent is one or a mixture of benzoic acid, potassium sorbate, dehydroacetic acid and sodium lactate.

[0021] The present invention also provides a method for preparing the above-mentioned compounded high-fixation-rate reactive dye ink, comprising the following steps: taking the raw material components, mixing and stirring them according to the component proportions for 15 minutes to 180 minutes to uniformly mix the ink components, and filtering them using a 0.10-1.00 micron filter membrane. The final compounded high-fixation-rate reactive dye ink has a viscosity of 1-100 cP, a surface tension of 20-100 mN / m, and a pH value of 3-10.

[0022] Beneficial effects

[0023] Compared with related technologies, the compounded high-fixation-rate reactive dye ink and its preparation method provided by the present invention have the following beneficial effects:

[0024] The present invention reduces the electrostatic repulsion between anionic reactive dyes and the cellulose fiber substrate by adding a cationic compound, thereby improving the adsorption, diffusion, and fixation of the reactive dyes on the cellulose fiber substrate. Because the compounded high-fixation reactive dye ink already contains the cationic compound, the process is shortened compared to the two-step process. The resulting finishing effect, namely the apparent color yield and fixation rate of the fabric, is equal to or slightly higher than that of the two-step process.

[0025] By adding the stabilizer of the present invention, the cationic compound and the anionic reactive dye in the composite high-fixation-rate reactive dye ink system are stabilized by means of the micelles or electrostatic effect formed by the stabilizer itself, thereby enhancing the ink storage stability and printing smoothness. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0027] Example 1:

[0028] The invention discloses a composite high-fixation-rate reactive dye ink, comprising, based on the total weight of the ink, 10.0 wt% of 3-(trimethylammonium)-2-hydroxypropyl glycidyl ether chloride, 0.5 wt% of sodium dodecylbenzenesulfonate, 13.0 wt% of Reactive Red 24, 12.0 wt% of ethylene glycol, 3.0 wt% of glycerol, 0.3 wt% of citric acid and 0.3 wt% of benzoic acid, with the balance being water. The composite high-fixation-rate reactive dye ink is obtained by uniformly mixing the above components in proportion and filtering through a 0.22-micron filter membrane. The obtained ink has a viscosity of 5.8 cP, a surface tension of 42.5 mN / m, an average particle size of 68 nm, a uniform morphology of the ejected ink droplets, and can maintain continuous printing stability for not less than 3 months under storage conditions of 25°C.

[0029] The invention relates to a method for treating a cotton fabric by a conventional reactive dye cellulose fiber substrate inkjet printing process. The substrate is a cotton fabric. The sizing solution comprises, based on the total weight of the sizing solution, 1.5 wt% of sodium carbonate, 10.0 wt% of sodium alginate, 12.0 wt% of urea, and the balance of deionized water. The cotton fabric is sizing by a double dipping and double padding method to ensure that the fabric has a liquid carrying rate of 80 wt%. The sizing process is performed after drying to obtain a sized cotton fabric. The sizing process is performed by inkjet printing a composite high-fixation-rate reactive dye ink on a patterned area of the sized cotton fabric. The fabric is dried and then steamed at 100° C. The fabric is finally washed with cold water, soaped, and washed with cold water to obtain an inkjet-printed cotton fabric with the reactive dye ink. The K / S value of the cotton fabric is tested with a DataColor tester, and the color fixation rate is tested with a UV-visible spectrophotometer. The K / S value of the final reactive dye inkjet-printed fabric is measured to be 12.83, the color fixation rate is 82.84%, the dry rubbing fastness is level 4, the wet rubbing fastness is level 4, and the soaping fastness is level 5.

[0030] Example 2:

[0031] The invention discloses a composite high-fixation-rate reactive dye ink, comprising, based on the total weight of the ink, 8.0 wt% of 3-chloro-2-hydroxypropyldimethyldodecyl ammonium chloride, 0.7 wt% of cetyltrimethylammonium bromide, 13.0% of Reactive Orange 84, 6.0 wt% of diethylene glycol, 4.5 wt% of glycerol, 1.0 wt% of triethanolamine, and 0.8 wt% of dehydroacetic acid, with the balance being water. The composite high-fixation-rate reactive dye ink is obtained by uniformly mixing the above components in proportion and filtering through a 0.45-micron filter membrane. The obtained ink has a viscosity of 3.7 cP, a surface tension of 39.7 mN / m, an average particle size of 57 nm, a uniform morphology of the ejected ink droplets, and can maintain continuous printing stability for not less than 3 months under storage conditions of 25°C.

[0032] The invention relates to a method for treating a cotton fabric by a conventional reactive dye cellulose fiber substrate inkjet printing process. The substrate is a cotton fabric. The sizing solution comprises, based on the total weight of the sizing solution, 2.0 wt% of sodium bicarbonate, 7.0 wt% of sodium alginate, 7.0 wt% of urea, and the balance of deionized water. The cotton fabric is sizing by a double dipping and double padding method to ensure that the fabric has a liquid carrying rate of 65 wt%. The sizing process is performed after drying to obtain a sized cotton fabric. The sizing process is performed by inkjet printing a composite high-fixation-rate reactive dye ink on a patterned area of the sized cotton fabric. The fabric is then dried and then steamed at 115° C., and finally cold washed, soaped, and cold washed to obtain an inkjet-printed cotton fabric with reactive dye ink. The K / S value of the cotton fabric is tested by a DataColor tester, and the color fixation rate is tested by a UV-visible spectrophotometer. The K / S value of the final reactive dye inkjet-printed fabric is measured to be 14.23, the color fixation rate is 84.72%, the dry rubbing fastness is level 4, the wet rubbing fastness is level 4, and the soaping fastness is level 5.

[0033] Example 3:

[0034] The invention discloses a composite high-fixation-rate reactive dye ink, comprising, based on the total weight of the ink, 15.0 wt% of dimethylaminopropyl methacrylamide-butylammonium bromide, 1.0 wt% of sodium lauryl sulfonate, 15.0 wt% of Reactive Red 195, 8.0 wt% of ethylene glycol, 5.0 wt% of glycerol, 1.0 wt% of citric acid and 0.1 wt% of potassium sorbate, with the balance being water. The composite high-fixation-rate reactive dye ink is obtained by uniformly mixing the above components in proportion and filtering through a 0.45-micron filter membrane. The obtained ink has a viscosity of 6.5 cP, a surface tension of 38.5 mN / m, an average particle size of 52 nm, a uniform morphology of the ejected ink droplets, and can maintain continuous printing stability for not less than 3 months under storage conditions of 25°C.

[0035] The invention relates to a method for treating a cotton fabric by a conventional reactive dye cellulose fiber substrate inkjet printing process. The substrate is a cotton fabric. The sizing solution comprises, based on the total weight of the sizing solution, 6.0 wt% of sodium carbonate, 6.0 wt% of sodium alginate, 8.0 wt% of urea, and the balance of deionized water. The cotton fabric is sizing by a double dipping and double padding method to ensure that the fabric has a liquid carrying rate of 70 wt%. The sizing process is performed after drying to obtain a sized cotton fabric. The sizing process is performed by inkjet printing a composite high-fixation-rate reactive dye ink on a patterned area of the sized cotton fabric. The fabric is dried and then steamed at 120° C. The fabric is finally cold washed, soaped, and cold washed to obtain an inkjet-printed cotton fabric with reactive dye ink. The K / S value of the cotton fabric is tested by a DataColor tester, and the color fixation rate is tested by a UV-visible spectrophotometer. The K / S value of the final reactive dye inkjet-printed fabric is measured to be 9.53, the color fixation rate is 78.42%, the dry rubbing fastness is level 4, the wet rubbing fastness is level 4, and the soaping fastness is level 5.

[0036] Example 4:

[0037] The invention discloses a composite high-fixation-rate reactive dye ink, comprising, based on the total weight of the ink, 8.0 wt% of polydiallyldimethylammonium chloride, 1.5 wt% of cetyltrimethylammonium bromide, 13.0% of Reactive Blue 49, 12.0 wt% of ethylene glycol, 4.0 wt% of glycerol, 0.5 wt% of citric acid and 0.8 wt% of benzoic acid, with the balance being water. The composite high-fixation-rate reactive dye ink is obtained by uniformly mixing the above components in proportion and filtering through a 0.22-micron filter membrane. The obtained ink has a viscosity of 3.8 cP, a surface tension of 56.2 mN / m, an average particle size of 80 nm, a uniform morphology of the ejected ink droplets, and can maintain continuous printing stability for not less than 3 months under storage conditions of 25°C.

[0038] A conventional reactive dye cellulose fiber substrate inkjet printing process is used for processing, wherein the substrate is cotton fabric, and the sizing solution comprises 4.0 wt% of sodium carbonate, 8.0 wt% of sodium alginate, 6.0 wt% of urea, and the balance of deionized water, based on the total weight of the sizing solution. The cotton fabric is sizing treated by a double dipping and double padding method to ensure that the fabric has a liquid carrying rate of 65 wt%, and the sizing-treated cotton fabric is obtained after drying. A composite high-fixation-rate reactive dye ink is spray-printed on a patterned area of the sized cotton fabric by an inkjet printing process, and the fabric is dried and then steamed at 110° C., and finally cold-washed, soap-washed, and cold-washed to obtain the reactive dye inkjet-printed cotton fabric. The cotton fabric is tested for K / S value using a DataColor tester and for color fixation using an ultraviolet-visible spectrophotometer. The final reactive dye inkjet-printed fabric has a K / S value of 9.13, a color fixation rate of 80.84%, dry rubbing fastness of level 4, wet rubbing fastness of level 4, and soaping fastness of level 5.

[0039] Example 5:

[0040] The invention discloses a composite high-fixation-rate reactive dye ink, which comprises, based on the total weight of the ink, 18.0 wt% of 2,3-epoxypropyltriethylammonium chloride, 2.0 wt% of polyvinylpyrrolidone, 12.0 wt% of Reactive Yellow 17, 10.0 wt% of ethylene glycol, 5.0 wt% of glycerol, 1.0 wt% of hexadecyltrimethylammonium bromide, 0.3 wt% of citric acid and 0.3 wt% of benzoic acid, with the balance being water. The composite high-fixation-rate reactive dye ink is obtained by uniformly mixing the above components in proportion and filtering through a 0.22-micron filter membrane. The obtained ink has a viscosity of 3.2 cP, a surface tension of 37.8 mN / m, an average particle size of 35 nm, a uniform morphology of the ejected ink droplets, and can maintain continuous printing stability for not less than 3 months under storage conditions of 25°C.

[0041] The invention relates to a method for treating a cotton fabric by a conventional reactive dye cellulose fiber substrate inkjet printing process. The substrate is a cotton fabric. The sizing solution comprises, based on the total weight of the sizing solution, 3.5 wt% of sodium carbonate, 10.0 wt% of sodium alginate, 12.0 wt% of urea, and the balance of deionized water. The cotton fabric is sizing by a double dipping and double padding method to ensure that the fabric has a liquid carrying rate of 65 wt%. The sizing process is performed after drying to obtain a sized cotton fabric. The sizing process is performed by inkjet printing a composite high-fixation-rate reactive dye ink on a patterned area of the sized cotton fabric. The fabric is then dried and then steamed at 102° C. The fabric is finally cold washed, soaped, and cold washed to obtain an inkjet-printed cotton fabric with reactive dye ink. The K / S value of the cotton fabric is tested by a DataColor tester, and the color fixation rate is tested by a UV-visible spectrophotometer. The K / S value of the final reactive dye inkjet-printed fabric is measured to be 15.83, the color fixation rate is 88.36%, the dry rubbing fastness is level 4, the wet rubbing fastness is level 4, and the soaping fastness is level 5.

[0042] Example 6:

[0043] The invention discloses a composite high-fixation-rate reactive dye ink, comprising, based on the total weight of the ink, 16.0 wt% of 3-chloro-2-hydroxypropyltrimethylammonium chloride, 1.2 wt% of Tween-80, 15.0 wt% of Reactive Red 24, 12.0 wt% of ethylene glycol, 5.0 wt% of glycerol, 0.3 wt% of potassium dihydrogen phosphate, and 0.3 wt% of potassium sorbate, with the balance being water. The composite high-fixation-rate reactive dye ink is obtained by uniformly mixing the above components in proportion and filtering through a 0.45-micron filter membrane. The obtained ink has a viscosity of 3.4 cP, a surface tension of 40.3 mN / m, an average particle size of 29 nm, a uniform morphology of the ejected ink droplets, and can maintain continuous printing stability for not less than 3 months under storage conditions of 25°C.

[0044] A conventional reactive dye cellulose fiber substrate inkjet printing process is used for processing, wherein the substrate is cotton fabric, and the sizing solution comprises 2.6 wt% of sodium carbonate, 8.0 wt% of sodium alginate, 8.0 wt% of urea, and the balance of deionized water, based on the total weight of the sizing solution. The cotton fabric is sizing treated by a double dipping and double padding method to ensure that the fabric has a liquid carrying rate of 65 wt%, and the sizing-treated cotton fabric is obtained after drying. A composite high-fixation-rate reactive dye ink is spray-printed on a patterned area of the sized cotton fabric by an inkjet printing process, and the fabric is dried and then steamed at 102° C., and finally cold-washed, soap-washed, and cold-washed to obtain the reactive dye inkjet-printed cotton fabric. The cotton fabric is tested for K / S value using a DataColor tester and for color fixation using an ultraviolet-visible spectrophotometer. The final reactive dye inkjet-printed fabric has a K / S value of 17.69, a color fixation rate of 91.52%, a dry rubbing fastness of 4, a wet rubbing fastness of 4, and a soaping fastness of 5.

[0045] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent process transformations made using the description of the present invention, or any direct or indirect application in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A compounded high fixation rate reactive dye ink, characterized in that: The composition by mass percentage is as follows: Cationic compound 1% to 50%, reactive dye 5% to 50%, stabilizer 0.1 to 5%, cosolvent 0 to 20%, moisturizer 0 to 20%, viscosity regulator 0 to 10%, surface tension regulator 0 to 5%, pH regulator 0 to 10%, antibacterial agent 0 to 2%, and the balance is deionized water; The cationic compound is a substance containing a positively charged group, and the positively charged group includes one or more of an amino group, a quaternary ammonium group, a quaternary phosphonium group, and a guanidine group structure; At the same time, the cationic compound also contains reactive groups, including one or more of carboxylic acid groups, acid anhydrides, acid halides, olefins, epoxy groups, pyrimidines and s-triazine structures, and has a number average molecular weight of 50-40,000; The reactive dye is one or a mixture of monochloro-s-triazine, dichloro-s-triazine, monofluoro-s-triazine, monochloro-s-triazine and β-vinylsulfone sulfate double active groups, monochloro-s-triazine and monochloro-s-triazine double active groups, vinylsulfone type and halogenated pyrimidine type reactive dyes.

2. The composite high fixation rate reactive dye ink according to claim 1, characterized in that: The cationic compound is tetrabutylammonium bromide, octylbutyldimethylammonium bromide, octylhexyldimethylammonium bromide, dioctyldimethylammonium bromide, polyethyleneimine, polydiallyldimethylammonium chloride, poly(dimethylaminopropylmethacrylamide-butylammonium bromide), poly(dimethylaminopropylmethacrylamide-hexylammonium bromide), poly(dimethylaminopropylmethacrylamide-benzylammonium bromide), 2,3-epoxypropyltrimethylammonium chloride, 2,3-epoxypropyltriethylammonium chloride, 2,3-epoxypropyldimethylbutaneammonium chloride, 2,3-epoxypropyldimethyloctanammonium chloride, 3-chloro-2-hydroxypropyltrimethyl chloride, 2,3-epoxypropyltrimethylammonium ... ammonium chloride, 3-chloro-2-hydroxypropyltriethylammonium chloride, 3-chloro-2-hydroxypropyldimethylbutane ammonium chloride, 3-chloro-2-hydroxypropyldimethyloctanammonium chloride, 3-chloro-2-hydroxypropyldimethyldodecyl ammonium chloride, 3-chloro-2-hydroxypropyldimethyloctadecyl ammonium chloride, dimethylaminopropylmethacrylamide-butylammonium bromide, dimethylaminopropylmethacrylamide-hexylammonium bromide, dimethylaminopropylmethacrylamide-benzylammonium chloride, monochloro-s-triazine type quaternary ammonium salt compound, carboxylic acid type quaternary phosphonium group, pyrimidine type guanidinium compound, azetidine cationic compound and choline chloride or a mixture of more thereof.

3. The composite high fixation rate reactive dye ink according to claim 1, characterized in that: The stabilizer is one or a mixture of polyvinyl pyrrolidone, hydroxyethyl cellulose, carboxymethyl cellulose, sodium salt of alkylnaphthalene sulfonate, sodium salt of lignin sulfonate, sodium dodecyl sulfonate, sodium lauryl sulfate, hexadecyltrimethylammonium bromide, dodecyltrimethylammonium bromide, OP-emulsifier, Surfynol 465 and Tween-80.

4. The composite high fixation rate reactive dye ink according to claim 1, characterized in that The reactive dye is one or a mixture of reactive blue 19, reactive red 198, reactive orange 16, reactive green 12, reactive yellow 17, reactive blue 49, reactive black 31, reactive red 24, reactive blue 72, reactive gray 4, reactive violet 23, reactive yellow 145, reactive orange 7, reactive red 141, reactive blue 4, reactive black 5, reactive red 120, reactive green 19, reactive violet 33, reactive yellow 95, reactive blue 221, reactive brown 21, reactive black 39, reactive red 195, reactive yellow 84, reactive blue 13, reactive orange 122, reactive red 11, reactive blue 21, reactive yellow 37, reactive black 8, reactive blue 194, reactive red 194, reactive violet 5, reactive orange 84, reactive green 8, reactive yellow 176, reactive red 218, reactive brown 9, and reactive yellow 160.

5. The composite high fixation rate reactive dye ink according to claim 1, characterized in that: The cosolvent is one or a mixture of ethylene glycol, glycerol, urea, diethylene glycol, formamide, thiodiethanol and polyethylene glycol.

6. The composite high fixation rate reactive dye ink according to claim 1, characterized in that: The moisturizing agent is one or a mixture of glycerol, 1,2-propylene glycol, 1,3-butylene glycol, ethylene glycol, diethylene glycol and polyethylene glycol.

7. The composite high fixation rate reactive dye ink according to claim 1, characterized in that: The viscosity modifier is one or a mixture of diethylene glycol ethyl ether, dimethyl sulfoxide, 1,2-propylene glycol, triethylene glycol, ethylene glycol, glycerol and polyethylene glycol 1000.

8. The composite high fixation rate reactive dye ink according to claim 1, characterized in that: The surface tension regulator is one or a mixture of sodium dodecyl sulfonate, Surfynol 465, sodium dodecyl sulfate, sodium stearate, sodium laurate, hexadecyltrimethylammonium bromide, dodecyltrimethylammonium bromide, OP-emulsifier and Tween-80.

9. The composite high fixation rate reactive dye ink according to claim 1, characterized in that: The pH regulator is one or a mixture of hydrochloric acid, sulfuric acid, citric acid, monoethanolamine, diethanolamine, triethanolamine, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, disodium hydrogen phosphate, sodium dihydrogen phosphate, sodium bicarbonate, sodium carbonate and sodium hydroxide; The antibacterial agent is one or a mixture of benzoic acid, potassium sorbate, dehydroacetic acid and sodium lactate.

10. A method for preparing a composite high-fixation-rate reactive dye ink according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: taking various raw material components, mixing and stirring them according to the component proportions for 15 to 180 minutes to uniformly mix the ink components, filtering through a 0.10 to 1.00 micron filter membrane, and finally obtaining a composite high-fixation-rate reactive dye ink having a viscosity of 1 to 100 cP, a surface tension of 20 to 100 mN / m, and a pH value of 3 to 10.