Textile printing and dyeing after-finishing water absorption accelerant as well as preparation method and application of textile printing and dyeing after-finishing water absorption accelerant

Abstract

The invention relates to the technical field of textile printing and dyeing processing, and discloses a textile printing and dyeing after-finishing water absorption accelerant as well as a preparation method and application thereof. According to the textile printing and dyeing after-finishing water absorption accelerator, in the structural formula, R is alkyl, and the carbon number of the alkyl is 8-13; a = 1-10, and b = 0-5. The textile printing and dyeing after-finishing water absorption accelerant can be applied to after-finishing padding processing, cone yarn / warp beam refining processing, cone yarn / warp beam dyeing processing and continuous pad dyeing processing of all-material fabric, so that the problems that fabric after-finishing processing batch difference is caused, and agents cannot adhere or adhere unevenly due to different pretreatment and dyeing processes are effectively solved.

Description

Technical Field

[0001] The present invention relates to a water absorption promoter, in particular to a water absorption promoter for textile printing and dyeing post-treatment, a preparation method thereof and uses thereof, belonging to the technical field of textile printing and dyeing. Background Art

[0002] In recent years, with the rapid development of the textile industry, the varieties of printed and dyed fabrics have become increasingly rich. From traditional cotton, linen, silk, wool to modern synthetic fibers and their blended products, they are not only colorful but also have increasingly enhanced functionality. To meet the requirements of different colors, the processes of pretreatment and dyeing are more complex and diverse, resulting in differences in water absorption of different varieties of fabrics or fabrics of the same variety but different colors during post-treatment processing. On this basis, due to the requirements of factories for processing efficiency, the processing speed of post-treatment has increased. The improvement of the processing speed often leads to poor water absorption or uneven water absorption on the surface of some fabrics, which in turn affects the effective adsorption and uniform distribution of subsequent chemicals, affects the processing effect, and cannot ensure the stability of fabric functions.

[0003] Existing water absorption promoters often have problems such as limited application scope or unstable effects, and it is difficult to fully meet the needs of complex and changeable printed and dyed fabrics. Especially when facing post-treatment processing under different pH conditions (acidic, neutral, alkaline), the effects of traditional water absorption promoters are greatly reduced, and they cannot effectively promote the uniform adsorption of chemicals on the fabric surface, thus affecting the final quality and market competitiveness of the fabric.

[0004] Therefore, for the above reasons, there is an urgent need to develop a highly efficient water absorption promoter to solve the problems of chemicals not adhering or adhering unevenly during post-treatment or padding processing, and it can better cope with post-treatment under acidic, neutral and alkaline conditions. Summary of the Invention

[0005] The present invention mainly solves the deficiencies existing in the prior art, and provides a water absorption promoter for textile printing and dyeing post-treatment, a preparation method thereof and uses thereof, which can effectively improve the batch difference of fabric post-treatment processing caused by different pretreatment and dyeing processes, and the problems of chemicals not adhering or adhering unevenly.

[0006] The above technical problems of the present invention are mainly solved by the following technical solutions:

[0007] A water absorption promoter for textile printing and dyeing post-treatment, the water absorption promoter has a structure shown in the following formula (Ⅰ):

[0008] RO-(CH 2 CH 2 O) a -(CH 2 CH(CH 3 )O)b -H of formula (I);

[0009] Wherein, R is an alkyl group, the number of carbon atoms of the alkyl group is 8 to 13, and hereinafter the number of carbon atoms of the alkyl group is replaced by C8-C13;

[0010] a = 1 to 10, b = 0 to 5.

[0011] Preferably, the alcohol used in the synthesis of the textile printing and dyeing after-finishing water absorption promoter is a C8-C13 branched-chain alkyl alcohol, and the overall degree of branching is 1 to 3.

[0012] Preferably, taking C11 branched-chain alcohol as an example, it is

[0013] One or more of.

[0014] Preferably, the C8-C13 branched-chain isomeric alcohol, by weight percentage, includes:

[0015] C8 branched-chain alcohol 0-2%;

[0016] C9 branched-chain alcohol 10-20%;

[0017] C10 branched-chain alcohol 50-80%;

[0018] C11 branched-chain alcohol 0-20%;

[0019] C12 branched-chain alcohol 0-10%;

[0020] C13 branched-chain alcohol 0-10%.

[0021] Preferably, the cloud point of the textile printing and dyeing after-finishing water absorption promoter in a 1% aqueous solution is 30-60 °C.

[0022] A method for preparing a textile printing and dyeing after-finishing water absorption promoter is carried out according to the following steps:

[0023] S1, take C8-C13 branched-chain isomeric alcohol, first mix it, then put it into a reaction kettle and stir, prepare a 20-50% KOH aqueous solution and add it to the reaction kettle, stir, displace the gas in the reaction kettle, heat up to 80-120 °C, and carry out vacuum dehydration treatment under stirring conditions;

[0024] S2, slowly introduce ethylene oxide into it, by weight, ethylene oxide: C8-C13 branched-chain isomeric alcohol = (90-350): 100, the feeding time is 2-6 h, and the temperature in the kettle is controlled at 100-120 °C, the pressure is 0.1-1.0 MPa, and keep warm for 1-3 hours for reaction;

[0025] S3. Then slowly introduce propylene oxide into it, with the weight ratio of propylene oxide:C8-C13 branched isomeric alcohol = (0-210):100. The feeding time is 1-3 h, and the temperature in the kettle is controlled at 100-120 °C, and the pressure is 0.1-1.0 MPa. Keep warm for 1-3 hours for reaction;

[0026] S4. Extract the unreacted ethylene oxide and propylene oxide, add 10-30% acetic acid to the reaction kettle for neutralization, and confirm that the pH is 6.0-8.0 to obtain the textile printing and dyeing post-finishing water absorption promoter.

[0027] The use of a textile printing and dyeing post-finishing water absorption promoter in the padding processing of all-material fabrics is carried out according to the following steps:

[0028] (1) Put the prepared post-finishing liquid into the padding trough;

[0029] Among them, the post-finishing liquid includes: 0.3-2% of the water absorption promoter with a concentration of 30%-40%, and one or several of softeners, antistatic agents, and water absorption and quick-drying agents, which are formulated together;

[0030] (2) Set the parameters, and the processed fabric is padded under a pressure of 2-5 kg, and heated to 120-200 °C for setting. The vehicle speed is 15-60 m / min. After setting, the required post-finished fabric is obtained.

[0031] The use of a textile printing and dyeing post-finishing water absorption promoter in the skein / beam scouring processing of all-material fabrics is carried out according to the following steps:

[0032] (1) Adopt a bath ratio of 1:3-1:20, add cotton, polyester, nylon or other types of single and blended fabrics or yarns into the dyeing machine at 25-50 °C, and at the same time add the prepared pretreatment liquid into the dyeing machine;

[0033] Among them, the pretreatment liquid includes: 0.5-3 g / L of the water absorption promoter with a concentration of 30%-40%, 1-6 g / L of scouring agent, 1 g / L of oxalic acid, 1-6 g / L of 30% concentration of NaOH and 1-30 g / L of 30% concentration of H 2 O 2 which are formulated together;

[0034] (2) Set the parameters, heat up to 80-135 °C at a rate of 1-3 °C / min, and keep warm for 20-120 min;

[0035] (3) Then wash, wash with cold water, and dry to obtain the pretreated fabric or yarn.

[0036] The use of a textile printing and dyeing post-finishing water absorption promoter in the skein / beam dyeing processing of all-material fabrics is carried out according to the following steps:

[0037] (1) Using a liquor ratio of 1:3 to 1:20, add cotton, polyester, nylon or other types of single and blended fabrics or yarns to the dyeing machine at 25 - 50 °C, and at the same time add the pre-treatment solution prepared in proportion to the dyeing machine;

[0038] Among them, the pre-treatment solution includes: a water absorption promoter with a concentration of 30% - 40% at 0.5 - 3 g / L, a leveling agent at 0.5 - 6 g / L, and a dyeing acid at 0.5 - 1 g / L, which are jointly prepared;

[0039] (2) Set the parameters, heat up to 80 - 135 °C at a rate of 1 - 3 °C / min, and keep it running for 20 - 120 min;

[0040] (3) Then carry out soaping, wash it with cold water, and dry it to obtain the dyed fabric or yarn.

[0041] The use of a water absorption promoter for textile printing and dyeing after - finishing in the continuous padding dyeing process of all - material fabrics is carried out according to the following steps:

[0042] (1) Put the padding dyeing solution prepared in proportion into the padding trough;

[0043] Among them, the padding dyeing solution includes: a water absorption promoter with a concentration of 30% - 40% at 0.1 - 2%, a dye at 0.1 - 10%, a leveling agent at 1 - 10%, and a dyeing acid at 0.5 - 1%, which are jointly prepared;

[0044] (2) Set the parameters, the processed fabric is padded with a pressure of 2 - 5 kg, heated to 120 - 180 °C for setting, the vehicle speed is 15 - 60 m / min, and the required padded fabric is obtained after setting.

[0045] This application has the following beneficial effects:

[0046] The water absorption promoter for textile printing and dyeing after - finishing provided by the present invention is a highly efficient, environmentally friendly and strongly adaptable water absorption promoter. This water absorption promoter can effectively improve the water absorption performance of printed and dyed fabrics during after - finishing or padding processing, promote the uniform adsorption of the agent, and can show excellent performance under acidic, neutral or alkaline conditions, thus ensuring the stability of the fabric processing effect and the integrity of the function. At the same time, the preparation method of the water absorption promoter provided by the present invention has a simple process, is easy to operate, and is suitable for large - scale industrial production. In addition, the four uses of the water absorption promoter provided by the present invention enrich the usage scenarios of the water absorption promoter, and can all improve the final quality of the fabric, thereby enhancing the market competitiveness of the fabric. Specific embodiments

[0047] The technical solution of the present invention will be further specifically described below through embodiments. The specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that the methods used in the following embodiments are all conventional methods unless otherwise specified; the materials, reagents, etc. used in the following embodiments can be obtained from commercial channels unless otherwise specified. In the following embodiments, the C8-C13 branched isomeric alcohols are all Exxal isomeric alcohols of ExxonMobil.

[0048] Examples 1-6: Preparation method of water absorption promoter for textile printing and dyeing post-finishing:

[0049] Based on the mixing ratio ranges disclosed in this application, Examples 1-6 provide six examples of water absorption promoters for textile printing and dyeing post-finishing, and their components and dosages (parts by weight) are shown in Table 1.

[0050] Table 1: Components and dosages of water absorption promoter for textile printing and dyeing post-finishing

[0051]

[0052] The preparation method of the water absorption promoter for textile printing and dyeing post-finishing is as follows:

[0053] S1. Mix the C8-C13 branched isomeric alcohols according to the ratio in Table 1, put them into a reaction kettle and stir. Prepare a 30% concentration of KOH aqueous solution and add it to the reaction kettle, stir, displace the gas in the reaction kettle, heat up to 90 °C, and carry out vacuum dehydration treatment under stirring conditions;

[0054] S2. Slowly introduce 170 parts by weight of ethylene oxide into it, and the introduction time is 4 h. Continue to heat up the reaction kettle to 110 °C and keep it warm for 2 hours for reaction;

[0055] S3. Then slowly introduce 50 parts by weight of propylene oxide into it, and the introduction time is 1 h. Cool down the reaction kettle to 100 °C and keep it warm for 1 hour for reaction;

[0056] S4. Extract the unreacted ethylene oxide and propylene oxide, add 10% acetic acid to the reaction kettle for neutralization, and confirm that the pH is 6.5 to obtain the water absorption promoter for textile printing and dyeing post-finishing.

[0057] Application Example 1: Post-finishing padding processing of all-fabric fabrics: Soft processing of cotton knitted fabrics

[0058] Processing process: Padding, liquor pickup rate 90% → Drying → Setting at 150 °C * 1 min;

[0059] (1) Put the prepared post-finishing liquid in proportion into the padding trough;

[0060] Among them, the after-finishing liquid is prepared by mixing 0.5% of the textile printing and dyeing after-finishing water absorption promoter with a concentration of 32% in Example 1 and 1.5% of softener AQ-1618 or softener OL-286;

[0061] (2) Set parameters. The processed fabric is padded with a pressure of 3 kg, heated to 150 °C for 1 minute of setting, the vehicle speed is 60 m / min, and the required after-finished fabric can be obtained after drying and setting.

[0062] Table 2: Softening processing parameters and results of cotton knitted fabric

[0063]

[0064] Feeling style: Adding the water absorption promoter of Example 1 with a concentration of 32% can stabilize the processing quality of different water absorption of the same material.

[0065] As can be seen from the above table, for the fabric sample No. 3 with poor water absorption, the combination of 32% of Example 1 is basically equivalent to the fabric sample No. 1 with good water absorption, and is significantly better than the direct padding of the fabric sample No. 2 with poor water absorption.

[0066] Application Example 2: After-finishing padding processing of all-material fabrics: Antistatic processing of polyester fabrics

[0067] Processing technology: Padding, padding rate 72% → drying → setting at 160 °C * 2 min;

[0068] (1) Put the prepared after-finishing liquid into the padding trough;

[0069] Among them, the after-finishing liquid is prepared by mixing 0.3% of the textile printing and dyeing after-finishing water absorption promoter with a concentration of 36% in Example 3 and 2% of antistatic agent NZ or antistatic agent FE-18Z;

[0070] (2) Set parameters. The processed fabric is padded with a pressure of 3 kg, heated to 160 °C for 2 minutes of setting, the vehicle speed is 60 m / min, and the required after-finished fabric can be obtained after drying and setting.

[0071] Table 3: Antistatic processing parameters and results of polyester fabrics

[0072]

[0073] Note: "B" in the above table represents the blank fabric without antistatic processing.

[0074] As can be seen from the above table, after the water absorption promoter of Example 3 with a concentration of 36% is used in combination with the agent, the water absorption of the fiber and the permeability of the processing liquid are significantly improved, the absorption of the agent is promoted, and the antistatic property is enhanced.

[0075] Application Example 3: Skein / beam scouring processing of all-material fabrics: Scouring and bleaching processing of cotton and linen yarns

[0076] Process flow: Pickling, 60°C * 20 min; B.R. = 1:9 → Two rinses with water → Oxygen bleaching, 110°C * 30 - 60 min, B.R. = 1:9, heating at 2.5°C / min → Rinsing at 80°C → Rinsing with water and acid neutralization → Dehydration → Drying.

[0077] (1) Using a liquor ratio of 1:9, add the cotton - linen yarn to the dyeing machine at 25°C, and at the same time add the pretreating liquid prepared in proportion to the dyeing machine.

[0078] Among them, the pretreating liquid is prepared by mixing 3 g / L of the water - absorption promoter for textile printing and dyeing post - finishing in Example 6 with a concentration of 33%, 1 g / L of oxalic acid, 1 g / L of NaOH (30%), 25 g / L of H 2 O 2 (30%), 3 g / L of scouring agent BH - 50, and 2 g / L of stabilizer PH - 33.

[0079] (2) Set the parameters, heat up to 110°C at 2.5°C / min, and keep the temperature for 30 - 60 min.

[0080] (3) Then wash with water at 80°C, wash with cold water, neutralize with acid, and dry to obtain the pretreated yarn.

[0081] Table 4: Processing parameters and results of scouring and bleaching of cotton - linen yarn

[0082]

[0083] Note: "B" in the above table represents the blank yarn without bleaching processing.

[0084] It can be seen from the above table that after the water - absorption promoter in Example 6 with a concentration of 33% is used in combination with the medicament, the permeability of the yarn in the processing liquid is significantly improved, the absorption of the medicament is promoted, the scouring and bleaching effect of the yarn is improved, and the whiteness is increased.

[0085] Application Example 4: Dyeing of full - material fabric cheese / yarn beam: Scouring and dyeing of polyester - spandex grey fabric in one bath

[0086] Process flow: Scouring and dyeing, heating to 40°C, keeping the temperature for 10 min; heating to 80°C at 3°C / min; heating to 130°C at 1°C / min, keeping the temperature for 40 min; B.R. = 1:10 → Reduction washing, keeping the temperature at 80°C for 20 min; B.R. = 1:10 → Rinsing with water and acid neutralization → Dehydration → Drying.

[0087] (1) Using a liquor ratio of 1:10, add the polyester grey fabric to the dyeing machine at 25°C, and at the same time add the pretreating liquid prepared in proportion to the dyeing machine.

[0088] Among them, the scouring and dyeing is prepared by mixing 3 g / L of the water absorption promoter for textile printing and dyeing aftertreatment in Example 2 with a concentration of 30%, 0.5 g / L of leveling agent SN-7500, 1 g / L of dyeing acid 1109Z, 0.90 - 1.0% o.w.f of disperse turquoise blue S-GL 200%, 1.60 - 1.74% o.w.f of disperse blue B, 0.25 - 0.40% o.w.f of disperse turquoise blue S-RP 300%, 3 g / L of sodium hydrosulfite, and 2 g / L of caustic soda;

[0089] (2) Set the parameters, heat up to 40°C at a rate of 3°C / min, and keep it running for 10 min; then heat up to 80°C at a rate of 3°C / min; then heat up to 130°C at a rate of 1°C / min and keep it running for 40 min;

[0090] (3) Then, at 80°C, keep it for 20 min for reduction washing, wash it with cold water, neutralize it with acid, and dry it to obtain the polyester - spandex fabric after scouring and dyeing in one bath.

[0091] Table 5: Processing parameters and results of scouring and dyeing of polyester - spandex grey fabric

[0092]

[0093]

[0094] As can be seen from the above table, after the water absorption promoter in Example 2 with a concentration of 30% is used in combination with the medicament, the permeability of the grey fabric during scouring and dyeing is improved, the absorption of the medicament is promoted, the dye is evenly dyed, and the scouring and dyeing effect is improved.

[0095] Note: Water absorption test: After preparing the treatment liquid according to the above formula, drop a drop of the treatment liquid on the polyester - spandex grey fabric and observe the time when the liquid mirror disappears.

[0096] The K / S value is a representation method of the color yield or apparent depth value of the fabric. It is usually used to represent the color depth of the fabric. The larger the K / S value, the deeper the color; the smaller the K / S value, the lighter the color.

[0097] Application Example 5: Continuous pad - dyeing processing of all - material fabric: Pad - dyeing processing of polyester fabric

[0098] Processing technology: Padding, liquor pick - up rate 72% → drying → setting at 160°C * 2 min;

[0099] (1) Put the prepared pad - dyeing liquid in proportion into the padding trough;

[0100] Among them, the pad dyeing solution is prepared by mixing 0.1-0.3% of the water absorption promoter for textile printing and dyeing aftertreatment in Example 4 with a concentration of 37%, 1% of the leveling agent DP-300, 1% of the dyeing acid 1109Z, 0.15% o.w.f of the dye D / N YELLOW UN-SE 200%, 0.3% o.w.f of the dye D / N RED UN-SE, and 0.3% o.w.f of the dye D / N BLUE UN-SE;

[0101] (2) Set the parameters. The processed fabric is padded with a pressure of 3 kg, heated to 170 °C for 1 minute of setting, the vehicle speed is 40 m / min, and the required pad-dyed fabric is obtained after drying and setting.

[0102] Table 6: Pad dyeing processing parameters and results of polyester fabrics

[0103]

[0104] As can be seen from the above table, after the water absorption promoter and the medicament in Example 4 with a concentration of 37% are used in combination, it can promote the rapid dyeing of the dye and improve the dyeing rate in the rapid setting process.

[0105] This specific embodiment is only an explanation of the present application, and it does not limit the present application. Those skilled in the art can make modifications to this embodiment without creative contributions according to needs after reading this specification, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. A water absorption accelerator for textile printing and dyeing finishing, characterized in that: The water absorption promoter has a structure as shown in the following formula (I): RO-(CH2CH2O) a -(CH2CH(CH3)O) b -H formula (Ⅰ); Wherein, R is an alkyl group, the carbon number of the alkyl group is 8 to 13, and the carbon number of the alkyl group is replaced by C8 to C13; a=1~10,b=0~5.

2. A water absorption accelerator for textile printing and dyeing finishing according to claim 1, characterized in that: The water absorption promoter for textile printing and dyeing finishing is synthesized by using alcohols that are C8-C13 branched alkyl alcohols, and the overall branching degree is 1-3.

3. A water absorption accelerator for textile printing and dyeing finishing according to claim 2, characterized in that: Taking C11 branched alcohol as an example, it is One or more of the .

4. A water absorption accelerator for textile printing and dyeing finishing according to claim 3, characterized in that: The C8-C13 branched isomeric alcohols include, by weight percentage: C8 branched alcohol 0-2%; C9 branched alcohol 10-20%; C10 branched alcohol 50-80%; C11 branched alcohol 0-20%; C12 branched alcohol 0-10%; C13 branched alcohol 0-10%.

5. A water absorption accelerator for textile printing and dyeing finishing according to claim 4, characterized in that: The turbidity point of the water absorption accelerator for textile printing and dyeing finishing in 1% aqueous solution is 30-60°C.

6. A method for preparing a water absorption accelerator for textile printing and dyeing finishing, the method using the water absorption accelerator according to any one of claims 1 to 5, characterized in that the method is carried out according to the following steps: S1, taking C8-C13 branched isomeric alcohols, mixing them first, and then putting them into a reactor and stirring, preparing KOH into a 20-50% KOH aqueous solution and adding it into the reactor, stirring, replacing the gas in the reactor, heating it to 80-120° C., and performing a reduced pressure dehydration treatment under stirring; S2, slowly add ethylene oxide, in which the weight ratio of ethylene oxide to C8-C13 branched isomeric alcohol is (90-350):100, the feeding time is 2-6 hours, and the temperature in the autoclave is controlled at 100-120° C. and the pressure is 0.1-1.0 MPa, and the reaction is carried out by keeping the temperature for 1-3 hours; S3, slowly introducing propylene oxide into the reactor, with a weight ratio of propylene oxide: C8-C13 branched isomeric alcohol = (0-210): 100, the feeding time is 1-3 hours, and the temperature in the reactor is controlled to be 100-120° C., the pressure is 0.1-1.0 MPa, and the reaction is carried out by keeping the temperature for 1-3 hours; S4, extracting unreacted ethylene oxide and propylene oxide, adding 10-30% acetic acid to the reactor for neutralization, and confirming that the pH is 6.0-8.0, so as to obtain the textile printing and dyeing finishing water absorption promoter.

7. Use of a water absorption accelerator for textile dyeing and finishing in a full-material fabric finishing padding process, the use using the water absorption accelerator described in claim 6, characterized in that the process is carried out according to the following steps: (1) Put the post-finishing liquid prepared in proportion into the liquid squeeze tank; in, The finishing liquid comprises: 0.3-2% of a water absorption promoter with a concentration of 30%-40%, and one or more of a softener, an antistatic agent, and a water absorption quick-drying agent, which are prepared together; (2) Setting parameters: the processed fabric is squeezed with a pressure of 2 to 5 kg, and the temperature is raised to 120 to 200°C for shaping, and the speed is 15 to 60 m / min. After shaping, the desired finished fabric is obtained.

8. Use of a water absorption accelerator for textile printing and dyeing finishing in the refining process of all-material fabric bobbins / warp beams, the use using the water absorption accelerator described in claim 6, characterized in that the process is carried out according to the following steps: (1) Using a bath ratio of 1:3 to 1:20, add cotton, polyester, nylon or other types of single or blended fabrics or yarns into a dyeing machine at 25 to 50°C, and at the same time add a pre-treatment solution prepared in proportion into the dyeing machine; in, The pretreatment liquid comprises: 0.5-3 g / L of a water absorption promoter with a concentration of 30%-40%, 1-6 g / L of a scouring agent, 1 g / L of oxalic acid, 1-6 g / L of NaOH with a concentration of 30%, and 1-30 g / L of H2O2 with a concentration of 30%, which are prepared together; (2) Set the parameters to increase the temperature to 80-135°C at 1-3°C / min and keep warm for 20-120 min; (3) Then wash, clean with cold water, and dry to obtain the pre-treated fabric or yarn.

9. Use of a water absorption accelerator for textile printing and dyeing finishing in the dyeing process of all-material fabric bobbin yarn / warp beam, the use using the water absorption accelerator described in claim 6, characterized in that the process is carried out according to the following steps: (1) Using a bath ratio of 1:3 to 1:20, add cotton, polyester, nylon or other types of single or blended fabrics or yarns into a dyeing machine at 25 to 50°C, and at the same time add a pre-treatment solution prepared in proportion into the dyeing machine; in, The pretreatment liquid comprises: 0.5 to 3 g / L of a water absorption promoter at a concentration of 30% to 40%, 0.5 to 6 g / L of a leveling agent, and 0.5 to 1 g / L of a dyeing acid, which are prepared together; (2) Set the parameters, raise the temperature to 80-135°C at 1-3°C / min, and keep warm for 20-120 minutes; (3) The dyed fabric or yarn is then prepared by soaping, washing with cold water, and drying.

10. Use of a water absorption accelerator for textile printing and dyeing finishing in continuous pad dyeing of all-material fabrics, the use using the water absorption accelerator described in claim 6, characterized in that the process is carried out according to the following steps: (1) Put the pad dyeing solution prepared in proportion into the pad dyeing tank; in, The pad dyeing liquid comprises: 0.1-2% of a water absorption accelerator with a concentration of 30%-40%, 0.1-10% of a dye, 1-10% of a leveling agent and 0.5-1% of a dyeing acid, which are prepared together; (2) Setting parameters: the processed fabric is pressed with a pressure of 2 to 5 kg, and the temperature is raised to 120 to 180°C for setting, and the speed is 15 to 60 m / min. After setting, the desired roller-dyed fabric is obtained.

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