Disperse dye washing-free printing process for cellulose acetate fiber fabric

Abstract

The invention discloses a disperse dye washing-free printing process for cellulose acetate fiber fabric, a magnetic bar printing machine is used for printing the cellulose acetate fiber fabric with dye, then heat preservation treatment is carried out, the dye is prepared from the following raw materials: a thickening agent, the dye, polyacrylate emulsion and the balance of water, polyacrylate molecules are of a hyperbranched network structure, and the polyacrylate emulsion is of a cross-linked network structure. The hyperbranched molecules have low melt viscosity and good flowability. During drying and color fixation, the modified additives can be more uniformly spread on the surfaces of the fibers to form a layer of compact, smooth and defect-free color film, the side chain of the modified additives contains benzene rings and cyano groups, the benzene rings can interact with a framework of the cellulose acetate fibers through Van der Waals force and a pi-pi stacking effect, the adhesion of the dye is further improved, the cyano groups are strong polar groups, and the color fastness of the dye is improved. When the fabric is used, strong dipole-dipole interaction can be generated with ester groups on cellulose acetate fibers, so that adsorption is enhanced, dye molecules are firmly locked in the fabric, and the fabric is further prevented from falling off due to friction and washing in the using process.

Description

Technical Field

[0001] This invention relates to the field of waterless printing, specifically to a waterless printing process for disperse dyes on acetate fiber fabrics. Background Technology

[0002] Acetate fiber, as a semi-synthetic polymer, is primarily derived from cellulose through acetylation modification. Its macromolecular chains are rich in hydrophobic acetyl groups, which determine its unique physicochemical properties. Acetate fiber fabrics possess an elegant luster, a smooth hand feel, and good drape, often used as a silk substitute and holding an important position in high-end women's wear and decorative fabrics. In terms of dyeing performance, acetate fiber lacks the hydrophilic and reactive groups found in cotton fibers, making it unsuitable for efficient coloring with water-soluble dyes such as reactive and direct dyes. Conversely, its hydrophobic properties make it more suitable for printing and dyeing with disperse dyes. Disperse dyes, as non-ionic dyes, have extremely low solubility in water and rely mainly on van der Waals forces and hydrogen bonds between themselves and the fiber for dyeing. For acetate fiber, disperse dyes can penetrate the amorphous region of the fiber, achieving relatively strong coloring, but also face problems such as poor leveling and insufficient colorfastness. Summary of the Invention

[0003] The purpose of this invention is to provide a waterless printing process for disperse dyes on acetate fiber fabrics, which solves the problem of low printing adhesion in current waterless printing processes.

[0004] The objective of this invention can be achieved through the following technical solutions: A waterless printing process for disperse dyes on acetate fiber fabrics includes the following steps: Step A1: Mix the modified additive, sodium dodecyl sulfate, N-hydroxymethylacrylamide, isooctyl acrylate, methyl methacrylate, acrylic acid, n-hexadecane and deionized water. Stir for 20-30 minutes at a speed of 300-500 r / min and a temperature of 20-25℃. Then add ammonium persulfate, raise the temperature to 80-85℃, and react for 2-3 hours. Finally, add ammonia water to adjust the pH to 7 to obtain a polyacrylate emulsion. Step A2: Weigh the following raw materials in the following percentages: 2-2.5% thickener, 2-2.5% dye, and 8-10% polyacrylate emulsion, with the remainder being water. Mix the raw materials evenly to obtain the dye. Use a magnetic rod printing machine to print the dye onto the acetate fiber fabric. Then, keep the temperature at 90-95℃ for 5-8 minutes, raise the temperature to 190-195℃, and keep it for 3-5 minutes to obtain the acetate fiber printed fabric.

[0005] Furthermore, the mass ratio of the modified additive, sodium dodecyl sulfate, N-hydroxymethylacrylamide, isooctyl acrylate, methyl methacrylate, acrylic acid, n-hexadecane, deionized water, and ammonium persulfate mentioned in step A1 is 1.6:1.2:1.8:22:18:0.6:4:20:0.15.

[0006] Furthermore, the modified additive is prepared by the following steps: Step B1: Lithium dimethylphenylsilanolate and tetrahydrofuran are mixed and protected under nitrogen. Under conditions of 200-300 r / min and 0°C, trifluoropropylmethylcyclotrisiloxane is added while stirring. The temperature is raised to 25-30°C and the reaction is carried out for 8-10 h. Then, trichlorosilane is added and the reaction is continued for 3-5 h to obtain hydrogen-branched polysiloxane. Hydrogen-branched polysiloxane, acrylic acid, caster catalyst and DMF are mixed and protected under nitrogen. Under conditions of 200-300 r / min and 80-85°C, the reaction is carried out for 6-8 h to obtain carboxylated polysiloxane. Step B2: Mix octamethylcyclotetrasiloxane, cyanoethylmethyldimethoxysilane, tetramethylammonium hydroxide, deionized water and 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane, purge with nitrogen, and react for 10-15 h at a rotation speed of 150-200 r / min and a temperature of 90-95 °C. Then raise the temperature to 105-110 °C and react for 2-3 h to obtain amino-modified polysiloxane. Step B3: Mix the aminated polysiloxane and DMF evenly, purge with nitrogen, and stir at 200-300 r / min and 70-80℃, adding 3,4-epoxy-1-butene and trifluoroacetic acid for 6-8 hours to obtain the modified polysiloxane. Mix the modified polysiloxane, carboxylated polysiloxane, p-toluenesulfonic acid, hydroquinone and xylene, and react at 150-200 r / min and 110-120℃ for 3-5 hours to obtain the modified additive.

[0007] Furthermore, in step B1, the molar ratio of Si-Cl bonds on lithium dimethylphenylsiloxane, trifluoropropylmethylcyclotrisiloxane, and trichlorosilane is 1:3:1, the molar ratio of hydrogen-branched polysiloxane to acrylic acid is 1:1, and the amount of cassette catalyst is 0.01 mmol of acrylic acid.

[0008] Furthermore, the molar ratio of octamethylcyclotetrasiloxane, cyanoethylmethyldimethoxysilane, tetramethylammonium hydroxide, deionized water and 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane in step B2 is 1.2:0.1:1.5:1:1.

[0009] Furthermore, in step B3, the molar ratio of the amino-modified polysiloxane to 3,4-epoxy-1-butene is 1:4, the amount of trifluoroacetic acid is 5 mol% of 3,4-epoxy-1-butene, the molar ratio of the modified polysiloxane to the carboxylated polysiloxane is 1:4, the amount of p-toluenesulfonic acid is 1 mol% of the carboxylated polysiloxane, and the amount of hydroquinone is 0.1 mol% of the carboxylated polysiloxane.

[0010] The beneficial effects of the present invention: The present invention discloses a waterless printing process for disperse dyes on acetate fiber fabrics. The dye is printed on the acetate fiber fabric by a magnetic rod printing machine and then heat-preserved. The dye includes the following raw materials: thickener, dye and polyacrylate emulsion, with the balance being water. The polyacrylate emulsion is prepared by free radical polymerization reaction using modified additives, N-hydroxymethylacrylamide, isooctyl acrylate, methyl methacrylate and acrylic acid as raw materials.

[0011] The modified additive uses lithium dimethylphenylsilanolate as an initiator and trifluoropropylmethylcyclotrisiloxane as a polymerization monomer to form a polysiloxane with a phenyl end and a lithium silanolate end. Trichlorosilane is then added, causing the Si-Cl bonds on the trichlorosilane to react with the lithium silanolate, yielding a hydrogen-branched polysiloxane. The hydrogen-branched polysiloxane is then reacted with acrylic acid, causing the Si-H bonds on the hydrogen-branched polysiloxane to react with the double bonds on the acrylic acid, yielding a carboxylated polysiloxane. Finally, octamethylcyclotetrasiloxane is ring-opened and reacted with cyanoethylmethyldimethylsiloxane. Oxy-silanes are hydrolyzed and condensed, then capped with 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane to obtain aminated polysiloxanes. The aminated polysiloxanes are then reacted with 3,4-epoxy-1-butene, causing the amino groups on the aminated polysiloxanes and the epoxy groups on the 3,4-epoxy-1-butenes to react, thus obtaining modified polysiloxanes. The modified polysiloxanes are then reacted with carboxylated polysiloxanes, causing the hydroxyl groups on the modified polysiloxanes and the carboxyl groups on the carboxylated polysiloxanes to esterify, thus obtaining modified additives.

[0012] The polyacrylate molecules have a hyperbranched network structure, and the hyperbranched molecules have low melt viscosity and good flowability. During drying and color fixing, they can spread more evenly on the fiber surface, forming a dense, smooth, and defect-free colored film. The side chains of the modified additives contain benzene rings and cyano groups. The benzene rings can interact with the backbone of the acetate fiber through van der Waals forces and π-π stacking effects, thereby increasing the adhesion of the dye. The cyano groups are strongly polar groups, which can generate strong dipole-dipole interactions with the ester groups on the acetate fiber, thereby enhancing adsorption and locking the dye molecules firmly inside the fabric, further preventing them from falling off due to friction and washing during use. Detailed Implementation

[0013] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0014] Example 1: A waterless printing process for disperse dyes on acetate fiber fabrics, specifically including the following steps: Step A1: Mix the modified additive, sodium dodecyl sulfate, N-hydroxymethylacrylamide, isooctyl acrylate, methyl methacrylate, acrylic acid, n-hexadecane and deionized water. Stir for 20 minutes at 300 r / min and 20°C. Add ammonium persulfate, heat to 80°C and react for 2 hours. Add ammonia to adjust the pH to 7 to obtain a polyacrylate emulsion. Step A2: Weigh the following raw materials in the following percentages: 2% thickener, 2% dye and 8% polyacrylate emulsion, with the remainder being water. Mix the raw materials evenly to obtain the dye. Use a magnetic rod printing machine to print the dye onto the acetate fiber fabric. Then, keep the temperature at 90℃ for 5 minutes, raise the temperature to 190℃, and keep it for 3 minutes to obtain the acetate fiber printed fabric.

[0015] The mass ratio of the modified additive, sodium dodecyl sulfate, N-hydroxymethylacrylamide, isooctyl acrylate, methyl methacrylate, acrylic acid, n-hexadecane, deionized water, and ammonium persulfate mentioned in step A1 is 1.6:1.2:1.8:22:18:0.6:4:20:0.15.

[0016] The modified additive is prepared by the following steps: Step B1: Lithium dimethylphenylsilanolate and tetrahydrofuran were mixed and protected under nitrogen. Under the conditions of 200 r / min and 0°C, trifluoropropylmethylcyclotrisiloxane was added while stirring. The mixture was heated to 25°C and reacted for 8 hours. Then, trichlorosilane was added and the reaction was continued for 3 hours to obtain hydrogen-branched polysiloxane. Hydrogen-branched polysiloxane, acrylic acid, caster catalyst and DMF were mixed and protected under nitrogen. Under the conditions of 200 r / min and 80°C, the mixture was reacted for 6 hours to obtain carboxylated polysiloxane. Step B2: Octamethylcyclotetrasiloxane, cyanoethylmethyldimethoxysilane, tetramethylammonium hydroxide, deionized water and 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane were mixed and purged with nitrogen. The mixture was reacted for 10 h at a rotation speed of 150 r / min and a temperature of 90 °C. The temperature was then raised to 105 °C and reacted for 2 h to obtain amino-modified polysiloxane. Step B3: Mix the aminated polysiloxane and DMF evenly, purge with nitrogen, and stir at 200 r / min and 70°C, adding 3,4-epoxy-1-butene and trifluoroacetic acid for 6 h to obtain the modified polysiloxane. Mix the modified polysiloxane, carboxylated polysiloxane, p-toluenesulfonic acid, hydroquinone and xylene, and react at 150 r / min and 110°C for 3 h to obtain the modified additive.

[0017] The molar ratio of Si-Cl bonds on lithium dimethylphenylsiloxane, trifluoropropylmethylcyclotrisiloxane and trichlorosilane in step B1 is 1:3:1, the molar ratio of hydrogen-branched polysiloxane and acrylic acid is 1:1, and the amount of cassette catalyst is 0.01 mmol of acrylic acid.

[0018] The molar ratio of octamethylcyclotetrasiloxane, cyanoethylmethyldimethoxysilane, tetramethylammonium hydroxide, deionized water and 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane in step B2 is 1.2:0.1:1.5:1:1.

[0019] In step B3, the molar ratio of the amino-modified polysiloxane to 3,4-epoxy-1-butene is 1:4, the amount of trifluoroacetic acid is 5 mol% of 3,4-epoxy-1-butene, the molar ratio of the modified polysiloxane to the carboxylated polysiloxane is 1:4, the amount of p-toluenesulfonic acid is 1 mol% of the carboxylated polysiloxane, and the amount of hydroquinone is 0.1 mol% of the carboxylated polysiloxane.

[0020] Example 2: A waterless printing process for disperse dyes on acetate fiber fabrics, specifically including the following steps: Step A1: Mix the modified additive, sodium dodecyl sulfate, N-hydroxymethylacrylamide, isooctyl acrylate, methyl methacrylate, acrylic acid, n-hexadecane and deionized water. Stir for 25 minutes at 300 r / min and 25°C. Add ammonium persulfate, heat to 85°C and react for 2 hours. Add ammonia to adjust the pH to 7 to obtain a polyacrylate emulsion. Step A2: Weigh the following raw materials in the following percentages: 2.3% thickener, 2.3% dye and 9% polyacrylate emulsion, with the remainder being water. Mix the raw materials evenly to obtain the dye. Use a magnetic rod printing machine to print the dye onto the acetate fiber fabric. Then, keep the temperature at 90℃ for 8 minutes, raise the temperature to 190℃, and keep it for 4 minutes to obtain the acetate fiber printed fabric.

[0021] The mass ratio of the modified additive, sodium dodecyl sulfate, N-hydroxymethylacrylamide, isooctyl acrylate, methyl methacrylate, acrylic acid, n-hexadecane, deionized water, and ammonium persulfate mentioned in step A1 is 1.6:1.2:1.8:22:18:0.6:4:20:0.15.

[0022] The modified additive is prepared by the following steps: Step B1: Lithium dimethylphenylsilanolate and tetrahydrofuran were mixed and protected under nitrogen. Under the conditions of 200 r / min and 0°C, trifluoropropylmethylcyclotrisiloxane was added while stirring. The mixture was heated to 30°C and reacted for 9 h. Trichlorosilane was then added and the reaction was continued for 4 h to obtain hydrogen-branched polysiloxane. Hydrogen-branched polysiloxane, acrylic acid, caster catalyst and DMF were mixed and protected under nitrogen. Under the conditions of 200 r / min and 85°C, the mixture was reacted for 7 h to obtain carboxylated polysiloxane. Step B2: Octamethylcyclotetrasiloxane, cyanoethylmethyldimethoxysilane, tetramethylammonium hydroxide, deionized water and 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane were mixed and purged with nitrogen. The mixture was reacted for 10 h at a rotation speed of 150 r / min and a temperature of 95 °C. The temperature was then raised to 110 °C and reacted for 2 h to obtain amino-modified polysiloxane. Step B3: Mix the aminated polysiloxane and DMF evenly, purge with nitrogen, and stir at 200 r / min and 75°C, adding 3,4-epoxy-1-butene and trifluoroacetic acid. React for 7 h to obtain the modified polysiloxane. Mix the modified polysiloxane, carboxylated polysiloxane, p-toluenesulfonic acid, hydroquinone, and xylene, and react at 150 r / min and 115°C for 4 h to obtain the modified additive.

[0023] The molar ratio of Si-Cl bonds on lithium dimethylphenylsiloxane, trifluoropropylmethylcyclotrisiloxane and trichlorosilane in step B1 is 1:3:1, the molar ratio of hydrogen-branched polysiloxane and acrylic acid is 1:1, and the amount of cassette catalyst is 0.01 mmol of acrylic acid.

[0024] The molar ratio of octamethylcyclotetrasiloxane, cyanoethylmethyldimethoxysilane, tetramethylammonium hydroxide, deionized water and 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane in step B2 is 1.2:0.1:1.5:1:1.

[0025] In step B3, the molar ratio of the amino-modified polysiloxane to 3,4-epoxy-1-butene is 1:4, the amount of trifluoroacetic acid is 5 mol% of 3,4-epoxy-1-butene, the molar ratio of the modified polysiloxane to the carboxylated polysiloxane is 1:4, the amount of p-toluenesulfonic acid is 1 mol% of the carboxylated polysiloxane, and the amount of hydroquinone is 0.1 mol% of the carboxylated polysiloxane.

[0026] Example 3: A waterless printing process for disperse dyes on acetate fiber fabrics, specifically including the following steps: Step A1: Mix the modified additive, sodium dodecyl sulfate, N-hydroxymethylacrylamide, isooctyl acrylate, methyl methacrylate, acrylic acid, n-hexadecane and deionized water. Stir for 30 min at 500 r / min and 25℃. Add ammonium persulfate, heat to 85℃ and react for 3 h. Add ammonia to adjust the pH to 7 to obtain a polyacrylate emulsion. Step A2: Weigh the following raw materials in the following percentages: 2.5% thickener, 2.5% dye, and 10% polyacrylate emulsion, with the remainder being water. Mix the raw materials evenly to obtain the dye. Use a magnetic rod printing machine to print the dye onto the acetate fiber fabric. Then, keep the temperature at 95℃ for 8 minutes, raise the temperature to 195℃, and keep it for 5 minutes to obtain the acetate fiber printed fabric.

[0027] The mass ratio of the modified additive, sodium dodecyl sulfate, N-hydroxymethylacrylamide, isooctyl acrylate, methyl methacrylate, acrylic acid, n-hexadecane, deionized water, and ammonium persulfate mentioned in step A1 is 1.6:1.2:1.8:22:18:0.6:4:20:0.15.

[0028] The modified additive is prepared by the following steps: Step B1: Lithium dimethylphenylsilanolate and tetrahydrofuran were mixed and protected under nitrogen. Under the conditions of 300 r / min and 0°C, trifluoropropylmethylcyclotrisiloxane was added while stirring. The mixture was heated to 30°C and reacted for 10 h. Trichlorosilane was then added and the reaction was continued for 5 h to obtain hydrogen-branched polysiloxane. Hydrogen-branched polysiloxane, acrylic acid, caster catalyst and DMF were mixed and protected under nitrogen. Under the conditions of 300 r / min and 85°C, the mixture was reacted for 8 h to obtain carboxylated polysiloxane. Step B2: Octamethylcyclotetrasiloxane, cyanoethylmethyldimethoxysilane, tetramethylammonium hydroxide, deionized water and 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane were mixed and purged with nitrogen. The mixture was reacted for 15 hours at a speed of 200 r / min and a temperature of 95 °C. The temperature was then raised to 110 °C and reacted for 3 hours to obtain amino-modified polysiloxane. Step B3: Mix the aminated polysiloxane and DMF evenly, purge with nitrogen, and stir at 300 r / min and 80°C, adding 3,4-epoxy-1-butene and trifluoroacetic acid for 8 h to obtain the modified polysiloxane. Mix the modified polysiloxane, carboxylated polysiloxane, p-toluenesulfonic acid, hydroquinone and xylene, and react at 200 r / min and 120°C for 5 h to obtain the modified additive.

[0029] The molar ratio of Si-Cl bonds on lithium dimethylphenylsiloxane, trifluoropropylmethylcyclotrisiloxane and trichlorosilane in step B1 is 1:3:1, the molar ratio of hydrogen-branched polysiloxane and acrylic acid is 1:1, and the amount of cassette catalyst is 0.01 mmol of acrylic acid.

[0030] The molar ratio of octamethylcyclotetrasiloxane, cyanoethylmethyldimethoxysilane, tetramethylammonium hydroxide, deionized water and 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane in step B2 is 1.2:0.1:1.5:1:1.

[0031] In step B3, the molar ratio of the amino-modified polysiloxane to 3,4-epoxy-1-butene is 1:4, the amount of trifluoroacetic acid is 5 mol% of 3,4-epoxy-1-butene, the molar ratio of the modified polysiloxane to the carboxylated polysiloxane is 1:4, the amount of p-toluenesulfonic acid is 1 mol% of the carboxylated polysiloxane, and the amount of hydroquinone is 0.1 mol% of the carboxylated polysiloxane.

[0032] Comparative Example 1: Compared with Example 1, this comparative example uses lithium trimethylsilanolate instead of lithium dimethylphenylsilanolate, and the other steps are the same.

[0033] Comparative Example 2: This comparative example did not include cyanoethyl methyl dimethoxysilane compared to Example 1, but the remaining steps were the same.

[0034] Comparative Example 3: Compared with Example 1, this comparative example uses hexamethylcyclotrisiloxane instead of trifluoropropylmethylcyclotrisiloxane, and the other steps are the same.

[0035] The acetate fiber printed fabrics prepared in Examples 1-3 and Comparative Examples 1-3 were used to determine the K / S value of the printed fabrics. The K / S value was determined using a Datecolor SF600 colorimeter with the following specific parameters: large aperture; 100% UV filter (off); no specular light; 3 color measurement times.

[0036] Color fastness to rubbing: Color fastness to rubbing was tested according to GB / T3920-2008, and the test results are shown in Table 1 below.

[0037] Table 1

[0038] As shown in Table 1, the dye in this application has excellent adhesion.

[0039] The above description is merely an example and illustration of the concept of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the concept of the invention or exceed the scope defined in the claims, they should all fall within the protection scope of the present invention.

Claims

1. A waterless printing process for disperse dyes on acetate fiber fabrics, characterized in that: Specifically, the steps include the following: Step A1: Mix the modified additive, sodium dodecyl sulfate, N-hydroxymethylacrylamide, isooctyl acrylate, methyl methacrylate, acrylic acid, n-hexadecane and deionized water. Stir for 20-30 minutes at a speed of 300-500 r / min and a temperature of 20-25℃. Then add ammonium persulfate, raise the temperature to 80-85℃, and react for 2-3 hours. Finally, add ammonia water to adjust the pH to 7 to obtain a polyacrylate emulsion. Step A2: Weigh the following raw materials in the following percentages: 2-2.5% thickener, 2-2.5% dye, and 8-10% polyacrylate emulsion, with the remainder being water. Mix the raw materials evenly to obtain the dye. Use a magnetic rod printing machine to print the dye onto the acetate fiber fabric. Then, keep the temperature at 90-95℃ for 5-8 minutes, raise the temperature to 190-195℃, and keep it for 3-5 minutes to obtain the acetate fiber printed fabric.

2. The waterless printing process for disperse dyes on acetate fiber fabrics according to claim 1, characterized in that: The mass ratio of the modified additive, sodium dodecyl sulfate, N-hydroxymethylacrylamide, isooctyl acrylate, methyl methacrylate, acrylic acid, n-hexadecane, deionized water, and ammonium persulfate mentioned in step A1 is 1.6:1.2:1.8:22:18:0.6:4:20:0.

15.

3. The disperse dye no-wash printing process for acetate fiber fabrics according to claim 1, characterized in that: The modified additive is prepared by the following steps: Step B1: Lithium dimethylphenylsilanolate and tetrahydrofuran are mixed and protected under nitrogen. Under conditions of 200-300 r / min and 0°C, trifluoropropylmethylcyclotrisiloxane is added while stirring. The temperature is raised to 25-30°C and the reaction is carried out for 8-10 h. Then, trichlorosilane is added and the reaction is continued for 3-5 h to obtain hydrogen-branched polysiloxane. Hydrogen-branched polysiloxane, acrylic acid, caster catalyst and DMF are mixed and protected under nitrogen. Under conditions of 200-300 r / min and 80-85°C, the reaction is carried out for 6-8 h to obtain carboxylated polysiloxane. Step B2: Mix octamethylcyclotetrasiloxane, cyanoethylmethyldimethoxysilane, tetramethylammonium hydroxide, deionized water and 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane, purge with nitrogen, and react for 10-15 h at a rotation speed of 150-200 r / min and a temperature of 90-95 °C. Then raise the temperature to 105-110 °C and react for 2-3 h to obtain amino-modified polysiloxane. Step B3: Mix the aminated polysiloxane and DMF evenly, purge with nitrogen, and stir at 200-300 r / min and 70-80℃, adding 3,4-epoxy-1-butene and trifluoroacetic acid for 6-8 hours to obtain the modified polysiloxane. Mix the modified polysiloxane, carboxylated polysiloxane, p-toluenesulfonic acid, hydroquinone and xylene, and react at 150-200 r / min and 110-120℃ for 3-5 hours to obtain the modified additive.

4. The disperse dye no-wash printing process for acetate fiber fabrics according to claim 3, characterized in that: The molar ratio of Si-Cl bonds on lithium dimethylphenylsiloxane, trifluoropropylmethylcyclotrisiloxane and trichlorosilane in step B1 is 1:3:1, the molar ratio of hydrogen-branched polysiloxane and acrylic acid is 1:1, and the amount of cassette catalyst is 0.01 mmol of acrylic acid.

5. The waterless printing process for disperse dyes on acetate fiber fabrics according to claim 3, characterized in that: The molar ratio of octamethylcyclotetrasiloxane, cyanoethylmethyldimethoxysilane, tetramethylammonium hydroxide, deionized water and 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane in step B2 is 1.2:0.1:1.5:1:

1.

6. The disperse dye no-wash printing process for acetate fiber fabrics according to claim 3, characterized in that: In step B3, the molar ratio of the amino-modified polysiloxane to 3,4-epoxy-1-butene is 1:4, the amount of trifluoroacetic acid is 5 mol% of 3,4-epoxy-1-butene, the molar ratio of the modified polysiloxane to the carboxylated polysiloxane is 1:4, the amount of p-toluenesulfonic acid is 1 mol% of the carboxylated polysiloxane, and the amount of hydroquinone is 0.1 mol% of the carboxylated polysiloxane.

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