Green reactive dye composition, reactive dye product and application

Abstract

The invention relates to the technical field of textile printing and dyeing, and particularly discloses a green reactive dye composition, a reactive dye product and application. The green reactive dye composition comprises a component A, a component B and a component C, wherein the component A is selected from at least one of dye compounds as shown in a formula (I); the component B is selected from at least one of dye compounds as shown in a formula (II); and the component C is selected from at least one of dye compounds as shown in a formula (III). The green reactive dye composition has the advantages of high compatibility, good stability, uniform dyeing, no dyeing defect and high dyeing color fastness, also has the characteristics of high fixation rate, high dye uptake and high dyeing efficiency, can stably dye in low-temperature, low-bath-ratio, low-salt and low-alkali environments, reduces the dyeing cost, and has commercial application prospects and economic values. Formula (I): Formula (II): Formula (III): Formula (I): Formula (II): Formula (III):

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textile printing and dyeing, and more particularly to a green reactive dye composition, a reactive dye product and application. BACKGROUND

[0002] When dyeing fiber fabrics, metal complex dyes or reactive dyes are often used. Compared with metal complex dyes, reactive dyes do not contain heavy metals and are widely concerned and applied. Reactive dyes are also called reactive dyes. When dyeing with reactive dyes, covalent bonds can be formed with fiber fabrics, thereby realizing dyeing. Traditional green single reactive dyes have insufficient dyeing capacity and poor color fastness. Traditional green mixed reactive dyes use tender yellow K-6G and turquoise KN-G for color mixing. The dyeing performance of the dyes of different varieties is quite different, the coordination is poor, and the dyeing color fastness is poor when applied to one-bath one-step dyeing, which needs to be further improved. SUMMARY

[0003] In order to improve the dyeing effect and color fastness, the present application provides a green reactive dye composition, a reactive dye product and application.

[0004] In a first aspect, the present application provides a green reactive dye composition, which adopts the following technical solution: A green reactive dye composition, the green reactive dye composition comprises component A, component B and component C, the component A is selected from at least one of the dye compounds shown in formula (I); the component B is selected from at least one of the dye compounds shown in formula (II); and the component C is selected from at least one of the dye compounds shown in formula (III). Formula (I): Formula (II): Formula (III): In formula (I), R1 is selected from -(CH2)nOSO3Y1, n is an integer from 1 to 4, Y1 and M1 are independently selected from -H or alkali metal cation; In formula (II), R2 is selected from -(CH2)nOSO3Y2, n is an integer from 1 to 4, Y2 and M2 are independently selected from -H or alkali metal cation, and X2 is selected from -NH2 or C1-C4 alkyl; In formula (III), R3 is selected from -(CH2)nOSO3Y3, n is an integer from 1 to 4, Y3 and M3 are independently selected from -H or an alkali metal cation; R4 and R5 are independently selected from C1-C4 alkyl; and X3 is selected from -NH2 or C1-C4 alkyl.

[0005] By adopting the technical scheme, the green reactive dye composition comprises component A containing an ethenesulfonyl group and an azo structure of a monochlorotriazine group; component B containing an azo structure of a monochlorotriazine group; and component C containing an azo structure of a monochlorotriazine group. Component A is a main color and presents blue light, and components B and C are coordination colors and both present yellow light. After components A, B and C are compounded, λmax is superimposed at 620-640 nm (blue light) and 390-410 nm (yellow light) to present stable green color.

[0006] The green reactive dye composition is applied to one-bath one-step dyeing of a fiber fabric, has good affinity with the fiber fabric, can diffuse from the surface of the fiber fabric to the inside of the fiber fabric, and form a coordination bond between the fiber fabric, thereby increasing dyeing stability. Components A, B and C are mutually matched, have high compatibility, good stability, uniform dyeing, no color spots, and high dyeing color fastness. The rubbing fastness, washing fastness, chlorine water fastness, light fastness and perspiration fastness are all ≥ grade 4, and the green reactive dye composition has more excellent rubbing fastness, washing fastness, chlorine water fastness, light fastness and perspiration fastness.

[0007] Moreover, the green reactive dye composition has a dyeing rate of 95% and a fixation rate of 90%. At a temperature of 60-80 ℃, a bath ratio of 1:(10-25), a concentration of anhydrous sodium sulfate of 30-60 g / L, and a concentration of sodium carbonate of 12-25 g / L, the weighted strength is stably between 98-102%, which shows the advantages of high fixation rate, high dyeing rate and high dyeing efficiency, and the green reactive dye composition can be stably dyed at low temperature, low bath ratio, low salt and low alkali environment, has the advantages of stable dyeing, reduces dyeing cost, has commercial application prospect and economic value. At the same time, compared with traditional metal complex dyes such as copper complex dyes and chromium complex dyes, the green reactive dye composition does not contain heavy metals and meets the OEKO-TEX Standard 100 certification requirements.

[0008] Optionally, in formula (I): R1 is selected from -(CH2)nOSO3Y1, n is 2, Y1 is -H, M1 is -H; and / or, in formula (II): R2 is selected from -(CH2)nOSO3Y2, n is 2, Y2 is -H, M2 is -H; X2 is -NH2; and / or, in formula (III): R3 is selected from -(CH2)nOSO3Y3, n is 2, Y3 is -H, M3 is -H; R4 is -CH3; R5 is -CH2CH3; X3 is -NH2.

[0009] By adopting the technical scheme, the component A, the component B and the component C obtained by selecting the above group combination are weakly acidic, and the green reactive dye composition is weakly acidic, and is more suitable for acid dyeing treatment.

[0010] Optionally, Y1 and M1 are independently selected from alkali metal cations. In formula (II), Y2 and M2 are independently selected from alkali metal cations. In formula (III), Y3 and M3 are independently selected from alkali metal cations.

[0011] Preferably, the alkali metal cation is -Na or -K.

[0012] By adopting the technical scheme, the alkali metal cation can promote the solubility of the component A, the component B and the component C in water, ensure that the green reactive dye composition is fully dissolved and dispersed, and improve the dyeing effect of the green reactive dye composition.

[0013] Optionally, in formula (I): R1 is selected from -(CH2)nOSO3Y1, n is 2, Y1 is -Na, M1 is -Na; and / or, in formula (II): R2 is selected from -(CH2)nOSO3Y2, n is 2, Y2 is -Na, M2 is -Na; X2 is -NH2; and / or, in formula (III): R3 is selected from -(CH2)nOSO3Y3, n is 2, Y3 is -Na, M3 is -Na; R4 is -CH3; R5 is -CH2CH3; X3 is -NH2.

[0014] By adopting the technical scheme, the green reactive dye composition obtained by selecting the above group combination has water solubility and compatibility, wide temperature stability, wide bath ratio stability, wide salt and alkali resistance, and is convenient for dyeing of fiber fabrics.

[0015] Optionally, the weight percentage of the component A is 70-80%, the weight percentage of the component B is 5-20%, and the weight percentage of the component C is 5-20%.

[0016] By adopting the technical scheme, the weight percentage of component A, component B and component C is optimized, so as to facilitate the preparation of the green reactive dye composition.

[0017] In a second aspect, the application provides a reactive dye product, which adopts the technical scheme as follows: A reactive dye product, which comprises a green reactive dye composition selected from the green reactive dye composition according to any one of claims 1-5.

[0018] By adopting the technical scheme, the application of the green reactive dye composition is facilitated.

[0019] Optionally, the raw material of the reactive dye product further comprises a dyeing auxiliary, and the weight ratio of the green reactive dye composition to the dyeing auxiliary is 1:(0.1-5).

[0020] By adopting the technical scheme, the dyeing auxiliary is added to the green reactive dye composition, which can improve the dyeing rate and dyeing efficiency of the green reactive dye composition, and can also improve the dyeing uniformity and enhance the dyeing effect. In multiple embodiments, the weight ratio of the green reactive dye composition to the dyeing auxiliary is 1:0.28, and the weight ratio can also be set to 1:0.1, 1:0.2, 1:0.5, 1:1, 1:1.5, 1:2, 1:2.5, 1:3, 1:3.5, 1:4, 1:4.5, 1:5, but is not limited to the listed values, and other values not listed in the range are also applicable.

[0021] Optionally, the dyeing auxiliary is selected from one or more of calcium chloride, anhydrous sodium sulfate and sodium bicarbonate. Preferably, the dyeing auxiliary is anhydrous sodium sulfate.

[0022] By adopting the technical scheme, the dyeing auxiliary is optimized, so as to facilitate the selection of the dyeing auxiliary.

[0023] In a third aspect, the application provides an application of the reactive dye product in a fiber fabric dyeing process, which adopts the technical scheme as follows: An application of the reactive dye product in a fiber fabric dyeing process.

[0024] Optionally, the fiber fabric is one of cotton fiber fabric, hemp fiber fabric and cotton fiber hemp fiber blended fabric.

[0025] By adopting the technical scheme, the fiber in the fiber fabric is cotton fiber or hemp fiber, so that a stable coordination bond is formed between the green reactive dye composition and the cotton fiber or hemp fiber, the color fastness grade is improved, and better dyeing effect is exhibited.

[0026] In summary, the present application has at least the following advantages: 1. The green reactive dye composition of the present application contains an ethene sulfone group, an azo structure of monochloro-s-triazine group in component A; an azo structure of monochloro-s-triazine group in component B, and an azo structure of monochloro-s-triazine group in component C. After compounding component A, component B and component C, a stable green color is presented, and the dyeing of fiber fabric can be realized.

[0027] 2. The green reactive dye composition of the present application has high compatibility and good stability between component A, component B and component C, and the dyeing is uniform without color spots, and has better rubbing color fastness, washing color fastness, chlorine water color fastness, light color fastness and perspiration color fastness.

[0028] 3. The green reactive dye composition of the present application has mutual cooperation between component A, component B and component C, and the dyeing rate reaches 95%, and the fixation rate reaches 90%, and the weighted strength is stably between 98-102% under the conditions of temperature of 60-80℃, bath ratio of 1:(10-25), anhydrous sodium sulfate concentration of 30-60g / L, and sodium carbonate concentration of 12-25g / L, so that the green reactive dye composition shows the advantages of high fixation rate, high dyeing rate and high dyeing efficiency, and can be stably dyed under the conditions of low temperature, low bath ratio, low salt and low alkali, and has commercial application prospect and economic value.

[0029] 4. The component A, component B and component C of the present application do not contain heavy metals, and meet the OEKO-TEX Standard 100 certification requirements. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the different dyeing time-dyeing rate / fixation rate curve of application example 1.

[0031] Figure 2 is the different dyeing time-dyeing rate / fixation rate curve of the comparative application example.

[0032] Figure 3 is the different temperature-weighted strength curve.

[0033] Figure 4 is the different bath ratio-weighted strength curve.

[0034] Figure 5 is the different salt dosage-weighted strength curve.

[0035] Figure 6 is the different alkali dosage-weighted strength curve. DETAILED DESCRIPTION

[0036] In order to make the present application more readily understood, reference is made to the following examples, which are intended to be illustrative only and not limiting of the scope of the application. Unless otherwise defined, all materials and components used in the present application can be obtained through commercial means or by conventional methods. Examples

[0037] Example 1 A green reactive dye composition, the green reactive dye composition comprising component A, component B, component C, component A is selected from as shown in formula (I-1); component B is selected from as shown in formula (II-1); component C is selected from as shown in formula (III-1).

[0038] Formula (I-1): Formula (II-1): Formula (III-1): A green reactive dye composition, the weight percentage of component A is 77%, the weight percentage of component B is 10%, and the weight percentage of component C is 13%.

[0039] A method for preparing a green reactive dye composition, comprising the following steps: Mixing component A, component B, and component C to obtain a green reactive dye composition.

[0040] Example 2 A green reactive dye composition, which is different from example 1 in that the weight percentage of component A, component B, and component C is different, and the weight percentage of component A is 70%, the weight percentage of component B is 10%, and the weight percentage of component C is 20%.

[0041] Example 3 A green reactive dye composition, which is different from example 1 in that the weight percentage of component A, component B, and component C is different, and the weight percentage of component A is 70%, the weight percentage of component B is 20%, and the weight percentage of component C is 10%.

[0042] Example 4 A green reactive dye composition, which is different from example 1 in that the weight percentage of component A, component B, and component C is different, and the weight percentage of component A is 80%, the weight percentage of component B is 5%, and the weight percentage of component C is 15%.

[0043] Example 5 A green reactive dye composition, which is different from example 1 in that the weight percentage of component A, component B, component C is different, and the weight percentage of component A is 80%, the weight percentage of component B is 15%, and the weight percentage of component C is 5%.

[0044] Example 6 A green reactive dye composition, which is different from example 1 in that the specific structural formula of component A, component B, component C is different, component A is selected from formula (I-2); component B is selected from formula (II-2); and component C is selected from formula (III-2).

[0045] Formula (I-2): Formula (II-2): Formula (III-2): Comparative example A reactive dye, the reactive dye is a commercially available reactive turquoise KN-G.

[0046] Because the traditional green mixed reactive dye, which uses reactive yellowish K-6G and reactive turquoise KN-G for compounding, the dyeing rate, fixation rate, temperature stability, bath ratio stability, salt stability, alkali stability of the green mixed reactive dye mainly depend on the contribution of reactive turquoise KN-G.

[0047] Reactive turquoise KN-G is an important category of conventional reactive dyes, which has mature excellent performance, and its spectral characteristics are the key components of green. Selecting reactive turquoise KN-G as the comparative example can accurately evaluate the performance retention of the blue component in the green reactive dye composition of the present application, such as whether the color fastness decreases due to compounding. It can also accurately evaluate the contribution of the blue component to the green hue in the green reactive dye composition of the present application, such as whether the green purity decreases due to the spectral shift of the blue component. It can also accurately evaluate the difference between the overall performance of the green reactive dye composition of the present application and the mature reactive turquoise KN-G, such as the dyeing rate and fixation rate, so as to clearly understand the advantages and disadvantages of the green reactive dye composition of the present application and the improvement direction.

[0048] Application example Application example 1 A reactive dye product, which comprises a green reactive dye composition and a dyeing aid, and the weight ratio of the green reactive dye composition and the dyeing aid is 1:0.28.

[0049] The dyeing auxiliary agent is anhydrous sodium sulfate; the green reactive dye composition was prepared using the method described in Example 1.

[0050] A method for preparing a reactive dye product includes the following steps: The green reactive dye composition and dyeing auxiliaries are mixed and ground to obtain reactive dye products.

[0051] Application Example 2-6 A reactive dye product, which differs from Application Example 1 in that the green reactive dye compositions of Application Examples 2-6 are prepared sequentially using the methods of Examples 2-6.

[0052] Comparative Application Examples A reactive dye product comprising reactive dye and dyeing auxiliary agent, wherein the weight ratio of reactive dye and dyeing auxiliary agent is 1:0.28.

[0053] The dyeing auxiliary agent is anhydrous sodium sulfate; the reactive dye is commercially available reactive turquoise KN-G, which is used in the comparative example.

[0054] A method for preparing a reactive dye product includes the following steps: Reactive dyes and dyeing auxiliaries are mixed and ground to obtain reactive dye products.

[0055] Performance testing (1) Dyeing rate and fixation rate Reactive dye products obtained from Application Example 1 and the Comparative Application Example were used in the dyeing process of fiber fabrics. The dye uptake and fixation rates at different dyeing times were measured, and curves showing different dyeing times versus dye uptake and fixation rates were plotted. The curves for different dyeing times versus dye uptake and fixation rates in Application Example 1 are shown below. Figure 1 As shown; the comparison curves of different dyeing times and dyeing rates / fixation rates in the application examples are as follows. Figure 2 As shown.

[0056] The fiber fabric is a double-knitted cotton fiber fabric.

[0057] The dyeing process is as follows: The fiber fabric is placed in water at 60℃ with a liquor ratio of 1:15. Anhydrous sodium sulfate and reactive dye are added; the concentration of anhydrous sodium sulfate is 70 g / L, and the amount of reactive dye is 4.5% owf (reactive dye by weight of the fiber fabric). The mixture is kept at this temperature for 30 minutes. Sodium carbonate is then added at a concentration of 20 g / L, and the mixture is kept at this temperature for another 60 minutes.

[0058] In the dyeing rate test, after sampling at different dyeing times, a colorimeter was used to detect the content of reactive dye products in the dye liquor before and after dyeing the fiber fabric, and the dyeing rate was calculated.

[0059] Dye uptake rate / (%)=(content of reactive dye product in dye liquor before dyeing-content of reactive dye product in dye liquor after dyeing+content of reactive dye product in washing mixture) / content of reactive dye product in dye liquor before dyeingx100%.

[0060] In the detection of dye fixation rate, after sampling at different dyeing times, water washing, soaping, collection of washing liquor and mixing are performed to obtain a washing mixture. The content of reactive dye product in the dye liquor before and after dyeing of the fiber fabric, and the content of reactive dye product in the washing mixture are detected by using a colorimeter, and the dye fixation rate is calculated.

[0061] Dye fixation rate / (%)=(content of reactive dye product in dye liquor before dyeing-content of reactive dye product in dye liquor after dyeing+content of reactive dye product in washing mixture) / content of reactive dye product in dye liquor before dyeingx100%.

[0062] It can be seen from Figure 1 that the reactive dye product of the present application has a dye uptake rate of 95% and a dye fixation rate of 90% after 50 min of dyeing. It can be seen from Figure 2 that the reactive dye product of the comparative application has a dye uptake rate of 73% and a dye fixation rate of 52% after 50 min of dyeing, and a dye uptake rate of 80% and a dye fixation rate of 60% after 90 min of dyeing.

[0063] It can be seen from Figure 1 , Figure 2 that the green reactive dye composition of the present application has the advantages of high dye uptake rate, high dye fixation rate and fast dyeing efficiency.

[0064] (2) Temperature resistance The effect of temperature has a dual nature: on the one hand, an increase in temperature will accelerate the thermal motion of dye molecules, enhance their diffusion power into the fiber fabric, and at the same time, increase the reaction rate of reactive dyes with the hydroxyl groups on the surface of the fiber fabric, and promote covalent bonding; on the other hand, too high a temperature will accelerate the hydrolysis of the dye, resulting in a decrease in the amount of effective dye. Therefore, when the temperature changes, if the weighted intensity changes little, it indicates that the system can maintain the dynamic balance between diffusion and hydrolysis within the temperature change range, and the effect of temperature on dyeing can be controlled.

[0065] The reactive dye products obtained from the application example 1 and the comparative application example were taken respectively, and the reactive dye products were used in the dyeing process of fiber fabric at different temperatures, and dyed fabrics were obtained. The weighted intensity of the dyed fabrics obtained at different temperatures was detected, and the different temperature-weighted intensity curves were drawn, as shown in Figure 3 .

[0066] The fiber fabric is a full cotton double-sided knitted fiber fabric.

[0067] The dyeing process employs the following method: The fibrous fabric is placed in water at different temperatures with a liquor ratio of 1:15. Anhydrous sodium sulfate and reactive dyes are added; the concentration of anhydrous sodium sulfate is 60 g / L, and the amount of reactive dye is 4.5% owf (reactive dye by weight of the fibrous fabric). The mixture is then kept at this temperature for 30 minutes. Sodium carbonate is then added at a concentration of 20 g / L, and the mixture is kept at this temperature for another 60 minutes. Finally, the fabric is washed with water, soaped, and washed again to obtain the dyed fabric.

[0068] The water temperatures were selected from 60℃, 65℃, 70℃, 75℃, and 80℃ respectively.

[0069] A computer-controlled colorimeter was used to test the weighted intensity of the dyed fabrics. The computer-controlled colorimeter was a QuestXE model manufactured by HunterLab.

[0070] from Figure 3 As can be seen, in the comparative application examples of reactive dye products, within the temperature range of 60-80℃, the weighted intensity gradually increases with increasing temperature, and the weighted intensity rises from 72% to 101%, showing a significant change. In contrast, the reactive dye product of this application maintains a stable weighted intensity between 99-101% within the temperature range of 60-80℃. The green reactive dye composition of this application exhibits less change in weighted intensity, and the effect of temperature on the dyeing effect is controllable. In other words, the green reactive dye composition of this application possesses high temperature stability and can be used for dyeing at low temperatures.

[0071] (3) Bath ratio stability The influence of the liquor ratio stems from the adsorption equilibrium principle: a smaller liquor ratio results in a higher dye concentration in the dye liquor, more opportunities for dye molecules to contact the surface of the fabric, and increased physical adsorption, providing more raw materials for subsequent fixation reactions. However, an excessively small liquor ratio may lead to poor dye liquor circulation, localized dye aggregation on the fabric, and affect evenness. Conversely, an excessively large liquor ratio results in a low dye liquor concentration, weak diffusion dynamics, and reduced physical adsorption, leading to a decrease in the total amount of dye bound even with high fixation efficiency. Therefore, when the liquor ratio changes, if the weighted intensity change is small, it indicates that the system can maintain a balance between dye concentration and adsorption on the fabric within the range of liquor ratio variation, and the liquor ratio has a relatively small impact on dyeing uniformity and dye uptake.

[0072] Reactive dye products obtained in Application Example 1 and the Comparative Application Example were used in the dyeing process of fiber fabrics at different liquor ratios, and dyed fabrics were obtained. The weighted intensity of the dyed fabrics obtained at different liquor ratios was measured, and different liquor ratio-weighted intensity curves were plotted. The different liquor ratio-weighted intensity curves of Application Example 1 and the Comparative Application Example are shown below. Figure 4 As shown.

[0073] The fiber fabric is a double-knitted cotton fiber fabric.

[0074] The dyeing process is as follows: The fiber fabric is placed in water at 60℃. Anhydrous sodium sulfate and reactive dye are added, with the concentration of anhydrous sodium sulfate being 60 g / L and the amount of reactive dye being 4.5% owf (reactive dye by weight of fiber fabric). The mixture is kept at this temperature for 30 minutes. Sodium carbonate is then added, with a concentration of 20 g / L, and the mixture is kept at this temperature for another 60 minutes. Finally, the mixture is washed with water, soaped, and washed again to obtain the dyed fabric.

[0075] The liquor ratios were selected from 1:10, 1:15, 1:20, and 1:25, respectively.

[0076] A computer-controlled colorimeter was used to test the weighted intensity of the dyed fabrics. The computer-controlled colorimeter was a QuestXE model manufactured by HunterLab.

[0077] from Figure 4 As can be seen, in the comparative application examples of reactive dye products, at a liquor ratio of 1:(10-25), the weighted intensity gradually decreases with increasing liquor ratio, and the weighted intensity drops from 104% to 93%, showing a significant change. In contrast, the reactive dye product of this application maintains a stable weighted intensity between 98-102% within a liquor ratio range of 1:(10-25). The green reactive dye composition of this application exhibits less change in weighted intensity, and the liquor ratio has a smaller impact on dyeing uniformity and dyeing rate. In other words, the green reactive dye composition of this application has high liquor ratio stability and can be used for dyeing in low liquor ratio environments.

[0078] (4) Salt resistance Sodium sulfate, in the initial stage of dyeing, reduces the negative charge on the surface of the fiber fabric through electrostatic shielding, thereby reducing the repulsive force between dye anions and the fiber fabric and promoting dye diffusion and physical adsorption to the fiber fabric surface. Insufficient anhydrous sodium sulfate results in poor dyeing promotion, low physical adsorption, insufficient raw materials for subsequent fixation reactions, and low dyeing rate. Excessive anhydrous sodium sulfate may lead to dye molecule aggregation, affecting diffusion uniformity. Therefore, when the salt dosage changes, if the weighted intensity change is small, it indicates that the system can maintain a balance between dyeing promotion and fixation, and the salt dosage has little impact on dye adsorption and covalent bonding.

[0079] Reactive dye products obtained from Application Example 1 and the Comparative Application Example were used in the dyeing process of fiber fabrics at different salt concentrations, and dyed fabrics were obtained. The weighted intensity of the dyed fabrics obtained at different salt concentrations was measured, and weighted intensity curves for different salt concentrations were plotted. The weighted intensity curves for different salt concentrations of Application Example 1 and the Comparative Application Example are shown below. Figure 5 As shown.

[0080] The fiber fabric is a double-knitted cotton fabric. The salt is selected from anhydrous sodium sulfate.

[0081] The dyeing process is as follows: The fiber fabric is placed in water at 60℃ with a liquor ratio of 1:15. Anhydrous sodium sulfate and reactive dye are added, with the reactive dye dosage being 4.5% owf (reactive dye dosage by weight of fiber fabric), and the mixture is kept at this temperature for 30 minutes. Sodium carbonate is then added at a concentration of 20 g / L, and the mixture is kept at this temperature for another 60 minutes. Finally, the fabric is washed with water, soaped, and washed again to obtain the dyed fabric.

[0082] The concentration of anhydrous sodium sulfate is selected from 30 g / L, 40 g / L, 50 g / L, and 60 g / L.

[0083] A computer-controlled colorimeter was used to test the weighted intensity of the dyed fabrics. The computer-controlled colorimeter was a QuestXE model manufactured by HunterLab.

[0084] from Figure 5 As can be seen, in the comparative application examples of reactive dye products, with an anhydrous sodium sulfate concentration of 30-60 g / L, the weighted intensity gradually increases with the increase of anhydrous sodium sulfate concentration, and the weighted intensity increases significantly from 88% to 100%. However, the reactive dye product of this application maintains a stable weighted intensity between 99-101% within the anhydrous sodium sulfate concentration range of 30-60 g / L. The green reactive dye composition of this application exhibits less variation in weighted intensity, and the amount of salt has a relatively small impact on the adsorption and covalent bonding of the dye. In other words, the green reactive dye composition of this application has high salt resistance and can be used for dyeing in low-salt environments.

[0085] (5) Alkali resistance Sodium carbonate provides an alkaline environment in the later stages of dyeing, causing the hydroxyl groups on the fabric to dissociate into more nucleophilic oxygen anions. These anions then irreversibly chemically bind to the active groups of the dye, fixing the dye to the fabric. Insufficient sodium carbonate will not provide enough alkalinity, resulting in incomplete fixation and a low fixation rate. Excessive sodium carbonate may accelerate dye hydrolysis or cause excessive swelling of the fabric under strong alkalinity, affecting fabric strength. Therefore, if the weighted intensity changes little when the amount of alkali changes, it indicates that the system maintains a balance between dyeing promotion and fixation, and the amount of alkali has little effect on dye adsorption and covalent bonding.

[0086] The reactive dye products obtained in application example 1 and comparative application example were respectively taken, and the reactive dye products were used in the dyeing process of fiber fabric under different alkali dosages, and dyed fabric was obtained. The weighted intensity of the dyed fabric obtained under different alkali dosages was detected, and the alkali dosage-weighted intensity curve under different alkali dosages was drawn, and the alkali dosage-weighted intensity curves of application example 1 and comparative application example were as shown in Figure 6

[0087] The fiber fabric was a full cotton double-sided knitted fiber fabric. The alkali was selected from sodium carbonate.

[0088] The dyeing process adopted the following method: the fiber fabric was placed in water with a temperature of 60°C, and the bath ratio was 1:15. Anhydrous sodium sulfate and the reactive dye product were added, the concentration of the anhydrous sodium sulfate was 60 g / L, and the dosage of the reactive dye product was 4.5% o.w.f (the weight of the reactive dye product to the fiber fabric). The heat preservation treatment was carried out for 30 min. Sodium carbonate was added, and the heat preservation treatment was continued for 60 min. Then, washing, soaping, and washing were carried out, and the dyed fabric was obtained.

[0089] The concentration of sodium carbonate was selected from 12 g / L, 15 g / L, 18 g / L, 20 g / L, 23 g / L, and 25 g / L.

[0090] The weighted intensity of the dyed fabric was detected by using a computer color matching instrument. The model of the computer color matching instrument was QuestXE, and the manufacturer was HunterLab.

[0091] As can be seen from Figure 6 , the weighted intensity of the reactive dye product of the comparative application example gradually increased with the increase of the concentration of sodium carbonate under the concentration of sodium carbonate of 12-25 g / L, and the weighted intensity increased from 91% to 103%, and the change of the weighted intensity was large. The weighted intensity of the reactive dye product of the present application was stable between 99-101% under the concentration of sodium carbonate of 12-25 g / L. The change of the weighted intensity of the green reactive dye composition of the present application was small, and the alkali dosage had little effect on the adsorption and covalent combination of the dye, that is, the green reactive dye composition of the present application had high alkali resistance stability, and could be dyed in a low-alkali environment.

[0092] (6) Color fastness The reactive dye products obtained in application examples 1-5 and the comparative application example were respectively taken, and the reactive dye products were used in the dyeing process of fiber fabric, and dyed fabric was obtained, and the following performance detection was carried out on the dyed fabric, and the detection results were as shown in Table 1.

[0093] The fiber fabric was a full cotton double-sided knitted fiber fabric.

[0094] ​The dyeing process is carried out as follows: the fiber fabric is placed in water at a temperature of 80°C, with a bath ratio of 1:15. Anhydrous sodium sulfate and reactive dye product are added, the concentration of anhydrous sodium sulfate is 60g / L, and the amount of reactive dye product is 4.5% o.w.f (reactive dye product to fiber fabric weight), and the temperature is maintained for 30 minutes. Sodium carbonate is added, the concentration of sodium carbonate is 20g / L, and the temperature is maintained for another 60 minutes. Then water washing, soaping, and water washing are carried out to obtain the dyed fabric.

[0095] The color fastness to rubbing of the dyed fabric is detected according to ISO 105-X12:2001 "Textiles - Colour fastness tests - Part X12: colour fastness to rubbing".

[0096] The color fastness to washing of the dyed fabric is detected according to ISO 105-C10:2006 "Textiles - Colour fastness tests - Part C10: colour fastness to washing - soaping or soaping soda".

[0097] The color fastness to chlorinated water of the dyed fabric is detected according to ISO 105-E03:1994 "Textiles - Colour fastness tests - Part E03: colour fastness to chlorinated water (swimming pool water)".

[0098] The color fastness to light of the dyed fabric is detected according to ISO 105-B02:1994 "Textiles - Colour fastness tests - Part B02: colour fastness to artificial light: xenon arc fading lamp".

[0099] The color fastness to perspiration of the dyed fabric is detected according to ISO 105-E04:1994 "Textiles - Colour fastness tests - Part E04: colour fastness to perspiration".

[0100] Table 1 detection results As can be seen from Table 1, the green reactive dyeing composition of the present application has high color fastness to rubbing, washing, chlorinated water, light, and perspiration, and exhibits better dyeing color fastness, and can meet the demand for high color fastness of fiber fabric.

[0101] It should be noted that the foregoing examples have been provided merely for the purposes of explanation and are in no way to be construed as limiting. The examples have been described with reference to illustrative embodiments. It is understood that the words which have been used are words of description rather than limitation. Changes can be made within the purview of the appended claims, as presently stated and as amended, without departing from the scope and spirit of the disclosure in its entirety. Although the disclosure has been described with reference to particular means, materials and embodiments, from the foregoing description, one skilled in the art can effect a wide variety of modifications to the preferred embodiments without departing from the scope and spirit of the disclosure.

Claims

1. A green reactive dye composition characterized in that: It comprises component A, component B, component C, the component A is selected from at least one of the dye compounds as shown in formula (I); the component B is selected from at least one of the dye compounds as shown in formula (II); the component C is selected from at least one of the dye compounds as shown in formula (III); Formula (I): Formula (II): Formula (III): In formula (I): R1 is selected from -(CH2)nOSO3Y1, n is an integer in 1-4, Y1, M1 are independently selected from -H or alkali metal cation; In formula (II): R2 is selected from -(CH2)nOSO3Y2, n is an integer in 1-4, Y2, M2 are independently selected from -H or alkali metal cation; X2 is selected from -NH2 or C1-C4 alkyl; In formula (III): R3 is selected from -(CH2)nOSO3Y3, n is an integer in 1-4, Y3, M3 are independently selected from -H or alkali metal cation; R4, R5 are independently selected from C1-C4 alkyl; X3 is selected from -NH2 or C1-C4 alkyl.

2. A green reactive dye composition according to claim 1, characterised in that: In formula (I): R1 is selected from -(CH2)nOSO3Y1, n is 2, Y1 is -H, M1 is -H; and / or, In formula (II): R2 is selected from -(CH2)nOSO3Y2, n is 2, Y2 is -H, M2 is -H; X2 is -NH2; and / or, In formula (III): R3 is selected from -(CH2)nOSO3Y3, n is 2, Y3 is -H, M3 is -H; R4 is -CH3; R5 is -CH2CH3; X3 is -NH2.

3. A green reactive dye composition according to claim 1, characterised in that: In formula (I): Y1, M1 are independently selected from alkali metal cation; In formula (II): Y2, M2 are independently selected from alkali metal cation; In formula (III): Y3, M3 are independently selected from alkali metal cation.

4. A green reactive dye composition according to claim 1, characterised in that: In formula (I): R1 is selected from -(CH2)nOSO3Y1, n is 2, Y1 is -Na, M1 is -Na; and / or, In formula (II): R2 is selected from -(CH2)nOSO3Y2, n is 2, Y2 is -Na, M2 is -Na; X2 is -NH2; and / or, In formula (III): R3 is selected from -(CH2)nOSO3Y3, n is 2, Y3 is -Na, M3 is -Na; R4 is -CH3; R5 is -CH2CH3; X3 is selected from -NH2.

5. A green reactive dye composition according to claim 1, characterized in that: The weight percentage of the component A is 70-80%, the weight percentage of the component B is 5-20%, and the weight percentage of the component C is 5-20%.

6. An active dye preparation, characterized by: It comprises a green active dye composition selected from the green active dye composition according to any one of claims 1-5.

7. A reactive dye product according to claim 6, characterised in that: The raw material of the active dye product further comprises a dyeing auxiliary, and the weight ratio of the green active dye composition to the dyeing auxiliary is 1:(0.1-5).

8. A reactive dye product according to claim 7, characterised in that: The dyeing auxiliary is selected from one or more of calcium chloride, anhydrous sodium sulfate, and sodium bicarbonate.

9. Use of the active dye product according to any one of claims 6-8 in a fiber fabric dyeing process.

10. Use according to claim 9, characterized in that: The fiber fabric is one of a cotton fiber fabric, a hemp fiber fabric, and a cotton fiber hemp fiber blended fabric. The fiber fabric is one of a cotton fiber fabric, a hemp fiber fabric, and a cotton fiber hemp fiber blended fabric.

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