Method for dyeing in one bath and in one color of a fabric of mercerized wool and cellulose fibers with reactive dyes

Abstract

The application provides a reactive dye one-bath and same-color dyeing method for mercerized wool and cellulose fiber blended and interwoven fabric, and belongs to the technical field of textile printing and dyeing. The method comprises the following steps: using reactive dyes containing double monochloro-s-triazine, in the presence of auxiliary naphthalenesulfonic acid sodium or its derivatives, peregal O-30, ablate B, anhydrous sodium sulfate and alkali agent, one-bath and one-step simultaneous dyeing of mercerized wool and cellulose fiber blended and interwoven fabric is realized, the complexity of dyeing processing is reduced, and the wool fiber has high soaping fastness without fixing. The dyeing method provided by the application also has the characteristics of low cost, energy saving and high efficiency, convenient implementation, no need for special adjustment of processing equipment, strong applicability, and applicability to general fabric.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textile printing and dyeing, and particularly relates to a reactive dye one-bath and same-color dyeing method for mercerized wool and cellulose fiber blended and interwoven fabric. BACKGROUND

[0002] Wool fabric has unique hand feeling and excellent moisture absorption, heat preservation and air permeability, etc., so it becomes the first choice in many fabric designs. Mercerized wool refers to wool that is pre-treated by Basolan DC chlorination or protease treatment to destroy and remove the scales on the surface of wool fibers, reduce the difference between the friction coefficients during forward and reverse movement of the wool, and avoid felting phenomenon during use after the wool is treated by the mercerization process. The wool has the characteristics of shrinkage resistance, machine washability and anti-pilling, and has a cashmere-like hand feeling and a silk-like luster. Due to these characteristics, mercerized wool is favored by many designers and consumers.

[0003] However, the dyeing process performance of the wool treated by the mercerization process changes greatly, and the processing difficulty is further increased when the wool is blended or interwoven with cellulose fibers. This is because the surface structure of the wool fiber changes after the mercerization process, the dyeing and diffusion of the dye are difficult, the corresponding dyeing rate and dye adsorption amount are greatly increased, and when the mercerized wool and cellulose fibers (cotton or regenerated cellulose fibers) are dyed by reactive dye one-bath, the mercerized wool is more easily dyed, and the cellulose fibers have a slower dyeing rate, resulting in a larger dyeing depth of the mercerized wool than that of the cellulose fibers under the same conditions, which leads to a "grayish" effect and poor quality of the fabric, and the quality of the dyeing process cannot be guaranteed.

[0004] Currently, different dyes are selected for dyeing mercerized wool and cellulose fibers respectively, such as direct dyes for dyeing cellulose fibers and neutral dyes for dyeing mercerized wool. However, using different dyes for separate dyeing not only complicates the dyeing process, but also makes it difficult to control the quality of the dyeing. Therefore, it is necessary to research a reactive dye one-bath and same-color dyeing method for mercerized wool and cellulose fiber blended and interwoven fabric to simplify the dyeing process, reduce the processing cost and improve the product quality. SUMMARY

[0005] Therefore, the present application provides a reactive dye one-bath and same-color dyeing method for mercerized wool and cellulose fiber blended and interwoven fabric, which comprises the following steps: using reactive dyes containing double monochloro-s-triazine to one-bath and one-step dyeing of mercerized wool and cellulose fiber blended and interwoven fabric in the presence of an auxiliary agent; the auxiliary agent includes sodium naphthalenesulfonate or its derivative, peregal O-30, ablate B, anhydrous sodium sulfate and alkali agent.

[0006] Further, the dyeing method specifically comprises the following steps:

[0007] (1) The mercerized wool and the cellulose fiber mixed and interwoven fabric is immersed in sodium naphthalene sulfonate or its derivative working solution, and adsorbed for 10-50 min;

[0008] (2) The reactive dye containing bis-trichloro triazine, the peregal O-30 and the Albegal B are added in sequence in the working solution, and adsorbed for 15-60 min;

[0009] (3) The sodium sulfate and the alkali agent are added in batches, and adsorbed and balanced;

[0010] (4) After temperature rising, the color fixing is preserved, the fabric after color fixing is washed by hot water, soaped, washed by water, dried, and the finished product is obtained.

[0011] Further, the sodium naphthalene sulfonate or its derivative in step (1) is used in an amount of 0.5-4 g / L.

[0012] Further, the bath ratio of the fabric to the sodium naphthalene sulfonate or its derivative working solution in step (1) is 1:5-1:20.

[0013] Further, the temperature of steps (1)-(3) is 20-35℃.

[0014] Further, the reactive dye containing bis-trichloro triazine in step (2) is added in an amount of 1-3%, the peregal O-30 is used in an amount of 0.5-2 g / L, and the Albegal B is used in an amount of 0.5-2 g / L.

[0015] Further, the sodium sulfate in step (3) is used in an amount of 20-60 g / L, and the alkali agent is used in an amount of 5-10 g / L.

[0016] Further, the alkali agent is composed of sodium carbonate and ammonia water, and the ratio of the sodium carbonate to the ammonia water is 0.5:4-4:0.5.

[0017] Further, the temperature rising speed in step (4) is 0.5-2℃ / min.

[0018] Further, the preservation time in step (4) is 20-90 min, and the color fixing temperature is 85-100℃.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The application adopts the specific combination of high-temperature type double-monochloro-s-triazine active dye, special auxiliary agent and fixing alkali agent, and simultaneously precisely controls the processes of dyeing adsorption, low-temperature alkali adding, temperature increasing, fixing, soaping and washing to complete the dyeing processing, sodium naphthalene sulfonate or its derivative is preferentially adsorbed on the wool fiber dyeing site, the interaction between Pingpingjia O-30 and Abalge B and the dye increases the solubility of the dye in water, the dye gradually separates from Pingpingjia O-30 and Abalge B when the temperature is increased, and the sodium naphthalene sulfonate or its derivative is separated from the dyeing site when the temperature is further increased, and the dye is dyed. Through dye dissolution and dye site control dissociation, simultaneous dyeing of the silk wool and cellulose fiber blended or interwoven fabric is realized, the dyeing process is simple, the reproducibility is good, the dyeing quality is easy to control, the fiber characteristics are not affected, and the fabric can also be endowed with good soaping fastness.

[0021] The dyeing method provided by the application is low in cost, energy-saving and efficient, easy to implement, does not need special adjustment of processing equipment, and is suitable for general fabrics. DETAILED DESCRIPTION

[0022] The application provides a reactive dye one-bath one-color dyeing method for silk wool and cellulose fiber blended or interwoven fabric, which comprises the following steps: using active dye containing double-monochloro-s-triazine, one-bath one-step dyeing of the silk wool and cellulose fiber blended or interwoven fabric in the presence of an auxiliary agent; the auxiliary agent comprises sodium naphthalene sulfonate or its derivative, Pingpingjia O-30, Abalge B, anhydrous sodium sulfate and an alkali agent.

[0023] In some embodiments of the application, the dyeing method specifically comprises the following steps:

[0024] (1) immersing the silk wool and cellulose fiber blended or interwoven fabric into a sodium naphthalene sulfonate or its derivative working solution and adsorbing for 10-50 min;

[0025] (2) sequentially adding active dye containing double-monochloro-s-triazine, Pingpingjia O-30 and Abalge B in the working solution and adsorbing for 15-60 min;

[0026] (3) adding anhydrous sodium sulfate and an alkali agent in batches and adsorbing until equilibrium;

[0027] (4) fixing after temperature increasing and heat preservation, washing the fixed fabric with hot water, soaping, washing with water, drying and obtaining the finished product.

[0028] In some embodiments of the application, the amount of the sodium naphthalene sulfonate or its derivative in step (1) is 0.5-4 g / L, preferably, the amount of the sodium naphthalene sulfonate or its derivative is 1 g / L.

[0029] In some embodiments of the present application, the bath ratio of the fabric to the sodium naphthalene sulfonate or its derivative working solution in step (1) is 1:5-1:20, preferably, the bath ratio of the fabric to the sodium naphthalene sulfonate or its derivative working solution is 1:20.

[0030] In some embodiments of the present application, the temperature of steps (1)-(3) is 20-35℃, preferably, the temperature is 30℃.

[0031] In some embodiments of the present application, the addition amount of the active dye containing bis-monochloro-s-triazine in step (2) is 1-3%, preferably, the addition amount of the active dye containing bis-monochloro-s-triazine is 1%, the amount of peregal O-30 is 0.5-2g / L, preferably, the amount of peregal O-30 is 2g / L, the amount of Albegal B is 0.5-2g / L, preferably, the amount of Albegal B is 1.5g / L.

[0032] In some embodiments of the present application, the amount of anhydrous sodium sulfate in step (3) is 20-60g / L, preferably, the amount of anhydrous sodium sulfate is 40g / L. The amount of alkali agent is 5-10g / L, preferably, the amount of alkali agent is 10g / L.

[0033] In some embodiments of the present application, the alkali agent is composed of sodium carbonate and ammonia water, and the ratio of sodium carbonate to ammonia water is 0.5:4-4:0.5, preferably, the ratio of sodium carbonate to ammonia water is 1:1.

[0034] In some embodiments of the present application, the heating rate in step (4) is 0.5-2℃ / min, preferably, the heating rate is 1℃ / min.

[0035] In some embodiments of the present application, the holding time in step (4) is 20-90min, preferably, the holding time is 60min, and the fixing temperature is 85-100℃, preferably, the fixing temperature is 85℃.

[0036] In order to make the purpose, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be described clearly and completely below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0037] In the following examples, the test methods or test methods are the conventional methods unless otherwise specified; the raw materials and auxiliaries are obtained from the conventional commercial channels or prepared by the conventional methods unless otherwise specified.

[0038] Embodiment 1

[0039] A reactive dye one-bath one-color dyeing method for mercerized wool and cellulose fiber blended and interwoven fabric, the specific steps are as follows:

[0040] (1) immerse the mercerized wool and viscose interwoven fabric into a sodium naphthalenesulfonate working solution, the concentration of sodium naphthalenesulfonate in the sodium naphthalenesulfonate working solution is 1 g / L, the bath ratio of the fabric to the working solution is 1:20, and the fabric is oscillated and adsorbed for 15 min at 30°C;

[0041] (2) take out the fabric and squeeze the water, add C.I. Reactive Yellow 84, PpG O-30 and Albegal B into the sodium naphthalenesulfonate working solution, after all are dissolved, obtain a dyeing solution, immerse the fabric into the dyeing solution, oscillate and adsorb for 15 min at 30°C, wherein the dosage of C.I. Reactive Yellow 84 is 1% (o.w.f.), the dosage of PpG O-30 is 2 g / L, and the dosage of Albegal B is 1.5 g / L;

[0042] (3) add anhydrous sodium sulfate into the dyeing solution in two times, the dosage of the anhydrous sodium sulfate is 40 g / L, dye for 15 min, then add a mixed alkali agent of sodium carbonate and ammonia water in two times (50%:50%), the mass ratio of the sodium carbonate to the ammonia water is 1:1, the dosage of the mixed alkali agent is 10 g / L, dye for 15 min at 30°C, and adsorb and balance;

[0043] (4) increase the temperature to 85°C, the temperature increasing speed is 1°C / min, keep the temperature at 85°C for 60 min to fix the color, wash the fabric after fixing the color with hot water, soapy wash, acid wash, water wash, and dry to obtain the finished product.

[0044] Embodiment 2

[0045] The difference from Embodiment 1 is that the dye used in this embodiment is C.I. Reactive Orange 84, and the remaining steps remain the same as Embodiment 1.

[0046] Embodiment 3

[0047] The difference from Embodiment 1 is that the dye used in this embodiment is C.I. Reactive Red 141, and the remaining steps remain the same as Embodiment 1.

[0048] Embodiment 4

[0049] The difference from Embodiment 1 is that the dye used in this embodiment is C.I. Reactive Red 120, and the remaining steps remain the same as Embodiment 1.

[0050] Embodiment 5

[0051] The difference from Embodiment 1 is that the dye used in this embodiment is C.I. Reactive Blue 171, and the remaining steps remain the same as Embodiment 1.

[0052] Example 6

[0053] The difference between this example and Example 1 is that the dye used in this example is C.I. Reactive Yellow 84 and C.I. Reactive Red 141 at a mass ratio of 1:1, and the remaining steps are the same as those of Example 1.

[0054] Example 7

[0055] The difference between this example and Example 1 is that the dye used in this example is C.I. Reactive Orange 84 and C.I. Reactive Red 141 at a mass ratio of 1:1, and the remaining steps are the same as those of Example 1.

[0056] Example 8

[0057] The difference between this example and Example 1 is that the dye used in this example is C.I. Reactive Yellow 84 and C.I. Reactive Blue 171 at a mass ratio of 1:1, and the remaining steps are the same as those of Example 1.

[0058] Example 9

[0059] The difference between this example and Example 1 is that the dye used in this example is C.I. Reactive Orange 84 and C.I. Reactive Blue 171 at a mass ratio of 1:1, and the remaining steps are the same as those of Example 1.

[0060] Example 10

[0061] The difference between this example and Example 1 is that the dye used in this example is C.I. Reactive Red 120 and C.I. Reactive Blue 171 at a mass ratio of 1:1, and the remaining steps are the same as those of Example 1.

[0062] Example 11

[0063] The difference between this example and Example 1 is that the dye used in this example is C.I. Reactive Red 120, C.I. Reactive Yellow 84 and C.I. Reactive Blue 171 at a mass ratio of 0.5:0.5:1, and the remaining steps are the same as those of Example 1.

[0064] Example 12

[0065] The difference between this example and Example 11 is that the amount of dye used in this example is 3%, and the remaining steps are the same as those of Example 1.

[0066] The wool and viscose fibers on the dyed fabric are separated, the K / S values of the yarns corresponding to Examples 1-12 are measured, the corresponding color difference is compared, and the soaping fastness of the corresponding fabric is measured, and the test results are shown in Table 1.

[0067] Table 1

[0068] Group Wool fibre K / S value Viscose fibre K / S value Soaping fastness Example 1 2.4 2.3 4 grade Example 2 6.1 6.2 4 grade Example 3 4.2 4.3 4 grade Example 4 4.8 4.9 4 grade Example 5 6.3 6.2 4 grade Example 6 3.0 2.9 3-4 grade Example 7 7.6 7.3 3-4 grade Example 8 5.6 5.3 4 grade Example 9 8.4 8.3 4 grade Example 10 8.9 9.0 3-4 grade Example 11 4.5 4.3 4 grade Example 12 10.3 10.1 3-4 grade

[0069] From Table 1, it can be seen that the five commonly used dichloro-triazine reactive dyes all exhibit excellent homochromaticity in single color, double-pigment and triple-pigment, with a color difference of less than 0.4 between the two fibers, and the washing color bleeding fastness of the final fabric is greater than 3 levels.

[0070] Comparative Example 1

[0071] The difference between this comparative example and Example 5 is that Albegal B is not added in the dyeing process of this comparative example, and the other steps remain the same as in Example 5.

[0072] Comparative Example 2

[0073] The difference between this comparative example and Example 5 is that Pingpingka O-30 is not added in the dyeing process of this comparative example, and the other steps remain the same as in Example 5.

[0074] Comparative Example 3

[0075] The difference between this comparative example and Example 5 is that sodium naphthalenesulfonate is not added in the dyeing process of this comparative example, and the other steps remain the same as in Example 5.

[0076] The wool and viscose fibers on the dyed fabric are separated, and the K / S values of the yarns corresponding to Example 5 and Comparative Examples 1-3 are determined, and the corresponding color differences are compared. The test results are shown in Table 2.

[0077] Table 2

[0078] Group Wool fibre K / S value Viscose fibre K / S value Example 5 6.3 6.2 Comparative Example 1 6.9 5.1 Comparative Example 2 7.4 4.3 Comparative Example 3 9.0 2.3

[0079] As can be seen from Table 2, the use of auxiliary agents in the dyeing process can effectively reduce the difference between fibers, and the order of action of the three auxiliary agents is sodium naphthalenesulfonate > Pingpingka O-30 > Albegal B.

[0080] Comparative Example 4

[0081] The difference between this comparative example and Example 1 is that C.I. Reactive Yellow 145 is added in the dyeing process of this comparative example, and the other steps remain the same as in Example 1.

[0082] Comparative Example 5

[0083] The difference between this comparative example and Example 1 is that C.I. Reactive Red 195 is added in the dyeing process of this comparative example, and the other steps remain the same as in Example 1.

[0084] Comparative Example 6

[0085] The difference between this comparative example and Example 1 is that C.I. Reactive Black 5 is added in the dyeing process of this comparative example, and the other steps remain the same as in Example 1.

[0086] Comparative Example 7

[0087] The difference from example 1 is that C.I. Reactive Blue 19 is added in the dyeing process of the comparative example, and the remaining steps are consistent with example 1.

[0088] The wool and viscose fibers on the dyed fabric are separated, the K / S values of the yarns corresponding to example 1 and comparative examples 4-7 are determined, and the corresponding color difference is compared, and the test results are shown in table 3.

[0089] Table 3

[0090] Group Wool fibre K / S value Viscose fibre K / S value Example 1 2.4 2.3 Comparative Example 4 3.0 1.2 Comparative Example 5 6.8 1.9 Comparative Example 6 7.8 2.9 Comparative Example 7 4.5 1.0

[0091] As shown in table 3, under the same dyeing process conditions, the homochromatic performance of the dichlorotriazine dye is obviously better than that of other commonly used monochlorotriazine ethylene sulfone double active group and ethylene sulfone single active group dyes.

[0092] Example 13

[0093] The difference from example 3 is that the silk wool-Tencel interwoven fabric is used in the example, and the remaining steps are consistent with example 3.

[0094] Example 14

[0095] The difference from example 3 is that the silk wool-cotton interwoven fabric is used in the example, and the remaining steps are consistent with example 3.

[0096] Example 15

[0097] The difference from example 3 is that the silk wool-Lyocell interwoven fabric is used in the example, and the remaining steps are consistent with example 3.

[0098] The wool and fibers on the dyed fabric are separated, the K / S values of the yarns corresponding to example 3 and examples 13-15 are determined, and the corresponding color difference is compared, and the test results are shown in table 4.

[0099] Table 4

[0100] Group Wool fibre K / S value Cellulose fibre K / S value Example 3 4.2 4.3 Example 13 4.0 4.1 Example 14 4.3 4.0 Example 15 4.1 4.1

[0101] As shown in table 4, under the same dyeing process conditions, the influence of natural cellulose fiber and regenerated cellulose fiber on the process is smaller, and the color difference of the two fibers can be controlled within 0.3.

[0102] The above only describes the preferred embodiments of the present application, and it should be noted that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A process for the one bath and one shade dyeing of silk wool and cellulosic fibre blended and interwoven fabric with reactive dyes, characterised in that, The method comprises the following steps: using reactive dyes containing bis-chlorotriazine, one-bath one-step dyeing of silk wool and cellulose fiber blended and interwoven fabric in the presence of an auxiliary; The auxiliary comprises sodium naphthalenesulfonate or its derivative, peregal O-30, ablate B, anhydrous sodium sulfate, alkali agent; The dyeing method specifically comprises the following steps: (1) immersing the silk wool and cellulose fiber blended and interwoven fabric into a sodium naphthalenesulfonate or its derivative working solution, and adsorbing for 10-50 min; (2) sequentially adding reactive dyes containing bis-chlorotriazine, peregal O-30 and ablate B into the working solution, and adsorbing for 15-60 min; (3) adding anhydrous sodium sulfate and alkali agent in batches, and adsorbing to equilibrium; (4) after heating, heat preservation and color fixing, the fabric after color fixing is washed with hot water, soaped, washed with water, dried, and finished products are obtained.

2. A process for the one bath level dyeing of mercerized wool and cellulosic fibre blended and interwoven fabric with reactive dyes as claimed in claim 1, wherein The amount of the sodium naphthalenesulfonate or its derivative in step (1) is 0.5-4 g / L.

3. A process for the one bath level dyeing of mercerized wool and cellulosic fibre blended and intermingled fabric with reactive dyes as claimed in claim 1 wherein, The bath ratio of the fabric to the sodium naphthalenesulfonate or its derivative working solution in step (1) is 1:5-1:

20.

4. A process for the one bath level dyeing of mercerized wool and cellulosic fibre blended and intermingled fabric with reactive dyes as claimed in claim 1 wherein, The temperature in steps (1)-(3) is 20-35℃.

5. A process for the one bath level dyeing of mercerized wool and cellulosic fibre blended and intermingled fabric with reactive dyes as claimed in claim 1, wherein The amount of peregal O-30 in step (2) is 0.5-2 g / L, and the amount of ablate B is 0.5-2 g / L.

6. A process for the one bath level dyeing of mercerized wool and cellulosic fibre blended and interwoven fabric with reactive dyes as claimed in claim 1, wherein The amount of anhydrous sodium sulfate in step (3) is 20-60 g / L, and the amount of the alkali agent is 5-10 g / L.

7. A process for the one bath level dyeing of mercerized wool and cellulosic fibre blended and interwoven fabric with reactive dyes as claimed in claim 6, wherein The alkali agent is composed of sodium carbonate and ammonia water, and the ratio of the sodium carbonate to the ammonia water is 0.5:4-4:0.

5.

8. A process for the one bath level dyeing of mercerized wool and cellulosic fibre blended and intermingled fabric with reactive dyes as claimed in claim 1, wherein The heating speed in step (4) is 0.5-2℃ / min.

9. A process for the one bath level dyeing of mercerized wool and cellulosic fibre blended and intermingled fabric with reactive dyes as claimed in claim 1, wherein The heat preservation time in step (4) is 20-90 min, and the color fixing temperature is 85-100℃.