A high-fastness disperse red dye composition suitable for dyeing acetate fiber and a method of using the same

Abstract

The present invention discloses a high-fastness disperse red dye composition suitable for dyeing acetate fiber and a method for use. The composition comprises component A, component B, component C, component D, a dispersant, white carbon black, and dust-proof oil. Component A, component B, component C, white carbon black, and the dispersant are uniformly mixed to obtain a mixture. Component D and the dust-proof oil are then uniformly mixed and added to the mixture using a micron spray, and stirred to mix uniformly, thereby obtaining a high-fastness disperse red dye composition suitable for dyeing acetate fiber. The dyeing method of the composition is simple. The prepared high-fastness disperse red dye composition suitable for dyeing acetate fiber has good deep dyeing properties and excellent color fastness to sunlight, washing, friction, perspiration, and other wear. The composition does not contain banned aromatic amines or allergenic and carcinogenic dyes. The organic chlorine carrier and quinoline meet the OEKO-TEX Standard 100 standards for textiles.

Description

Technical Field

[0001] The invention belongs to the technical field of dyes, and particularly relates to a high-fastness disperse red dye composition suitable for dyeing acetate fiber. Background Art

[0002] Acetate fabric is a semi-synthetic fiber made from cellulose fibers through an acetylation process. It exhibits excellent moisture absorption, breathability, antistatic properties, deodorizing properties, drape, and gloss. It is widely used in high-end clothing fabrics, linings, formal wear, scarves, ties, pajamas, and more. However, acetate fabrics suffer from poor heat and alkali resistance. Under alkaline conditions, acetate groups undergo saponification, reducing the fiber's gloss.

[0003] Traditional disperse dyes used for dyeing acetate fibers (such as Disperse Yellow 3, Disperse Red 1, Disperse Red 3, Disperse Red 11, Disperse Red 17, Disperse Orange 3, Disperse Blue 3, etc.) have simple molecular structures and small molecular weights, and offer advantages such as high color uptake, good migration, and bright colors. However, they exhibit poor wear fastness, such as resistance to washing and perspiration, and most are banned as allergenic or carcinogenic dyes, which do not meet environmental requirements. Conventional polyester disperse dyes on the market suffer from low dye uptake, heavy wash residue color, and excessive surface color when dyeing acetate fabrics at low temperatures. Therefore, the development of high-fastness disperse dyes suitable for dyeing acetate fabrics is particularly important.

[0004] CN104905436B discloses a dyeing and finishing process for cuprammonium viscose acetate fabric, belonging to the field of fabric dyeing technology. It is characterized by being interwoven with three types of fibers: cuprammonium fiber, viscose fiber, and acetate fiber. The process steps include: a primary wash, pretreatment, a secondary wash, acetic acid dyeing, a tertiary wash, cuprammonium viscose dyeing, a tertiary wash, acid washing for pH adjustment, removal from the vat, a primary drying process, primary shaping, softening and finishing, a secondary drying process, and a secondary shaping process. The pretreatment involves treatment with a mild neutral treatment solution. However, the dyeing process is relatively complex, and the results still require considerable improvement. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a high-fastness disperse red dye composition suitable for dyeing acetate fiber, which is characterized in that it includes component A, component B, component C, component D, a dispersant, white carbon black and dust-proof oil. Component A, component B, component C, white carbon black and the dispersant are evenly mixed to obtain a mixture, and then component D and the dust-proof oil are evenly mixed and added to the mixture by micron spraying, and stirred and mixed evenly to obtain a high-fastness disperse red dye composition suitable for dyeing acetate fiber. The structure of the component A is shown in Formula 1, and the structure of the component B is shown in Formula 2. After the component D and the dust-proof oil are evenly mixed, they are added by micron spraying, so that the component D and the dust-proof oil can be completely mixed in the composition, and the effect is better.

[0006]

[0007] Adding white carbon black to the composition improves the dispersibility and stability of the composition, improves the dyeing effect, enhances the light resistance, heat resistance and solvent resistance of the pigment, increases the brightness, hue and saturation of the pigment, and enhances the anti-aging performance of the pigment.

[0008] Furthermore, the dispersant is at least one of dispersant NNO, dispersant MF and dispersant CNF.

[0009] Furthermore, the component C is aluminum oxide or zinc oxide.

[0010] Furthermore, the component D is didecyldimethylammonium chloride, which has antibacterial and antiviral functions and is also used as a foaming agent in the foaming and dyeing process, without the need to add an additional foaming agent.

[0011] Furthermore, the aluminum oxide or zinc oxide is in the form of nanoparticles. Nanomaterials can provide brighter colors, have good ultraviolet shielding properties and excellent antibacterial and deodorizing properties, and improve the sun protection, antibacterial, aging resistance, and non-fading properties of fabrics.

[0012] Furthermore, when R1 is H and R2 is CH3COO, it is structure A1 of formula 1; when R1 is CN and R2 is H, it is structure A2 of formula 1; when R1 is Cl and R2 is H, it is structure A3 of formula 1; when R3 is Cl and R4 is NHCOCH3, it is structure B1 of formula 2; when R3 is H and R4 is NHCOCH3, it is structure B2 of formula 2; when R3 is CN and R4 is CH3, it is structure B3 of formula 2; when R4 is Br and R4 is NHCOCH3, it is structure B4 of formula 2.

[0013] Furthermore, the component A is A3 and the component B is B1. When the component A is A3 and the component B is B1, a chlorine atom is introduced at the ortho position of the azo group, which is a strong electron-withdrawing group, thereby reducing the electron cloud density of the azo group's hydrogen atom and shielding the azo group, thereby improving the stability of the azo group and ultimately improving the light fastness of the dye, with a better effect.

[0014] Furthermore, the composition is composed of the following substances in parts by mass:

[0015] Component A 5-20 parts

[0016] Component B 30-60 parts

[0017] Component C 0.1~1 part

[0018] Component D 0.5-1 part

[0019] 0.5~1 part of white carbon black

[0020] 20-55 parts of dispersant

[0021] 0.01 to 1 part of dust-proof oil.

[0022] At the same time, the present invention also provides a method for using the high-fastness disperse red dye composition suitable for dyeing acetate fiber, which is characterized by comprising the following steps:

[0023] S11: preparing the fabric to be dyed, and then uniformly mixing the composition, ethanol, polyacrylamide and water to prepare a dyeing solution, wherein the weight of the composition is 2% of the weight of the fabric, the bath ratio is 4:1, the weight of the ethanol is 1% of the weight of the water, and the weight of the polyacrylamide is 0.05% of the weight of the water;

[0024] S12: Add the dyeing liquid into the automatic foaming machine for foaming, and then use the foam applying device to apply the foam to the surface of the fabric, and then break the bubbles for dyeing. The bubble breaking method is to use a scraper to push the bubbles or ultrasonic bubble breaking. Ultrasonic bubble breaking has a good effect and can make the dyeing more uniform. It can break tiny bubbles and achieve better results.

[0025] S13: The fabric dyed in step S12 is steamed for color fixation, soaped, washed, and dried to obtain the dyed fabric.

[0026] In the foaming dyeing process, adding a small amount of ethanol can not only increase the solubility of the fuel, but also make the dust-proof oil better mixed in the dyeing liquid, with better effects. Adding the right proportion of polyacrylamide can make the dyeing liquid viscosity suitable, foaming sufficient, and the effect good.

[0027] At the same time, the present invention also provides another method for using the high-fastness disperse red dye composition suitable for dyeing acetate fiber, which is characterized by comprising the following steps:

[0028] S21: Prepare the fabric to be dyed, then evenly mix the composition, ethanol and water to prepare a dyeing solution, wherein the weight of the composition is 2% of the weight of the fabric, the bath ratio is 8:1, and the pH value is adjusted to 4-5 with acetic acid. The weight of the ethanol is 1% of the weight of the water. Adding a small amount of ethanol can increase the solubility of the fuel and also make the dust-proof oil better mixed in the dyeing solution, resulting in a better effect;

[0029] S22: Place the fabric into the dyeing solution obtained in step S21, heat it to 110°C, keep it warm for 45 to 60 minutes, cool it to 50°C, wash it with water, reduce it, wash it with water, and dry it to obtain the dyed fabric. The reduction process is: hydrosulfite 2 to 5g / L, soda ash 1g / L, anti-staining agent 0.5g / L, bath ratio 10:1, and reduce it at 70°C for 20 minutes.

[0030] The high-fastness disperse red dye composition suitable for dyeing acetate fiber prepared by the present invention has the following advantages:

[0031] 1. A high-fastness disperse red dye composition suitable for dyeing acetate fibers. The dye has good deep-dyeing properties and excellent color fastness to sunlight, washing, friction, perspiration, etc.

[0032] 2. Environmental protection: does not contain banned aromatic amines, allergenic and carcinogenic dyes; organic chlorine carriers and quinoline meet the OEKO-TEX Standard 100 indicators for textiles. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] The dust-proof oils used in the following examples and comparative examples are all dust-proof oils AS produced by Suzhou Shengxiong Fine Chemical Co., Ltd.

[0035] Example 1

[0036] A high-fastness disperse red dye composition suitable for dyeing acetate fiber, comprising the following substances in parts by mass:

[0037] Component A 180kg

[0038] Component B1330kg, B2190kg

[0039] Nano zinc oxide 6kg

[0040] Didecyldimethylammonium chloride 7kg

[0041] 6kg of white carbon black

[0042] Dispersant MF 285kg

[0043] 4kg of dustproof oil.

[0044] The above-mentioned white carbon black and dispersant are mixed evenly to obtain a mixture, and then component D and dust-proof oil are mixed evenly and added to the mixture by micron spraying, and stirred and mixed evenly to obtain a high-fastness disperse red dye composition suitable for acetate fiber dyeing.

[0045] The method for using the high-fastness disperse red dye composition suitable for dyeing acetate fiber comprises the following steps:

[0046] S11: preparing 20 kg of fabric to be dyed, and then uniformly mixing the composition, ethanol, polyacrylamide and water to prepare a dyeing solution, wherein the weight of the composition is 2% of the weight of the fabric, the bath ratio is 4:1, the weight of the ethanol is 1% of the weight of the water, and the weight of the polyacrylamide is 0.05% of the weight of the water;

[0047] S12: adding the dyeing liquid into an automatic foaming machine for foaming, then applying the foam to the surface of the fabric using a foam applying device, and then breaking the foam for dyeing, wherein the foam breaking method is ultrasonic foam breaking;

[0048] S13: The fabric dyed in step S12 is steamed for color fixation, soaped, washed, and dried to obtain the dyed fabric.

[0049] Example 2

[0050] A high-fastness disperse red dye composition suitable for dyeing acetate fiber, comprising the following substances in parts by mass:

[0051] Component A180kg, A2400kg

[0052] Component B2480kg, B3460kg

[0053] Nano alumina 6kg

[0054] Didecyldimethylammonium chloride 7kg

[0055] 6kg of white carbon black

[0056] Dispersant NNO 285kg

[0057] 8kg of dustproof oil.

[0058] The above-mentioned white carbon black and dispersant are mixed evenly to obtain a mixture, and then component D and dust-proof oil are mixed evenly and added to the mixture by micron spraying, and stirred and mixed evenly to obtain a high-fastness disperse red dye composition suitable for acetate fiber dyeing.

[0059] The method for using the high-fastness disperse red dye composition suitable for dyeing acetate fiber comprises the following steps:

[0060] S11: preparing 20 kg of fabric to be dyed, and then uniformly mixing the composition, ethanol, polyacrylamide and water to prepare a dyeing solution, wherein the weight of the composition is 2% of the weight of the fabric, the bath ratio is 4:1, the weight of the ethanol is 1% of the weight of the water, and the weight of the polyacrylamide is 0.05% of the weight of the water;

[0061] S12: adding the dyeing liquid into an automatic foaming machine for foaming, then applying the foam to the surface of the fabric using a foam applying device, and then breaking the bubbles for dyeing, wherein the bubble breaking method is to use a scraper to push the bubbles;

[0062] S13: The fabric dyed in step S12 is steamed for color fixation, soaped, washed, and dried to obtain the dyed fabric.

[0063] Example 3

[0064] A high-fastness disperse red dye composition suitable for dyeing acetate fiber, comprising the following substances in parts by mass:

[0065] Component A2230kg

[0066] Component B2 250kg, B4 170kg

[0067] Nano alumina 6kg

[0068] Didecyldimethylammonium chloride 7kg

[0069] 6kg of white carbon black

[0070] Dispersant CNF 285kg

[0071] 6kg of dustproof oil.

[0072] The above-mentioned white carbon black and dispersant are mixed evenly to obtain a mixture, and then component D and dust-proof oil are mixed evenly and added to the mixture by micron spraying, and stirred and mixed evenly to obtain a high-fastness disperse red dye composition suitable for acetate fiber dyeing.

[0073] The method for using the high-fastness disperse red dye composition suitable for dyeing acetate fiber comprises the following steps:

[0074] S21: preparing the fabric to be dyed, and then uniformly mixing the composition, ethanol and water to prepare a dyeing solution, wherein the weight of the composition is 2% of the weight of the fabric, the bath ratio is 8:1, and the pH value is adjusted to 4-5 with acetic acid, and the weight of the ethanol is 1% of the weight of the water;

[0075] S22: Place the fabric into the dyeing solution obtained in step S21, heat it to 110°C, keep it warm for 45 to 60 minutes, cool it to 50°C, then wash it, reduce it, wash it again, and dry it to obtain the dyed fabric.

[0076] Example 4

[0077] A high-fastness disperse red dye composition suitable for dyeing acetate fiber, comprising the following substances in parts by mass:

[0078] Component A3250kg

[0079] Component B 1400kg

[0080] Nano alumina 6kg

[0081] Didecyldimethylammonium chloride 7kg

[0082] 6kg of white carbon black

[0083] Dispersant CNF 285kg

[0084] 6kg of dustproof oil.

[0085] The above-mentioned white carbon black and dispersant are mixed evenly to obtain a mixture, and then component D and dust-proof oil are mixed evenly and added to the mixture by micron spraying, and stirred and mixed evenly to obtain a high-fastness disperse red dye composition suitable for acetate fiber dyeing.

[0086] The method for using the high-fastness disperse red dye composition suitable for dyeing acetate fiber comprises the following steps:

[0087] S21: preparing the fabric to be dyed, and then uniformly mixing the composition, ethanol and water to prepare a dyeing solution, wherein the weight of the composition is 2% of the weight of the fabric, the bath ratio is 8:1, and the pH value is adjusted to 4-5 with acetic acid, and the weight of the ethanol is 1% of the weight of the water;

[0088] S22: Place the fabric into the dyeing solution obtained in step S21, heat it to 110°C, keep it warm for 45 to 60 minutes, cool it to 50°C, then wash it, reduce it, wash it again, and dry it to obtain the dyed fabric.

[0089] Example 5

[0090] The ultrasonic bubble breaking in Example 1 was replaced by a scraper pushing method, and the rest was the same as in Example 1 and will not be described in detail.

[0091] Comparative Example 1

[0092] The didecyldimethylammonium chloride component in Example 1 was removed, and the rest was the same as Example 1, which will not be repeated here.

[0093] Comparative Example 2

[0094] The nano zinc oxide component in Example 1 is removed, and the rest is the same as Example 1, which will not be repeated here.

[0095] Comparative Example 3

[0096] In Example 3, component D and the dust-proof oil were mixed evenly and then added in a micron spraying manner, but the addition was changed to direct all-at-once addition. Other details were the same as in Example 3 and will not be described in detail.

[0097] The high-fastness disperse red dye compositions suitable for dyeing acetate prepared in the above examples and comparative examples were used to dye acetate fabrics. After dyeing, the fabrics were tested by Intertek, a third-party tester, and were found to contain no banned aromatic amines. The heavy metal and chlorophenol contents met the environmental protection indicators of Oeko-Tex Standard 100. AATCC 16-2016, AATCC 61-1A, AATCC 8-2016, and AATCC 15-2021 were used to test the color fastness to light, washing, rubbing, and perspiration. The antibacterial rate was tested according to JIS L-0217-103. The results are shown in Table 1.

[0098] Table 1

[0099]

[0100] It can be seen from the data in the above table that the compositions prepared in Examples 1 to 5 have good color fastness to light, color fastness to washing, color fastness to rubbing, color fastness to perspiration and antibacterial rate after dyeing acetate fiber. The effects of Examples 5 and 4 are the best. In Example 4, when component A is A3 and component B is B1, a chlorine atom is introduced at the ortho position of the azo group, which achieves the best effect. In addition, the use of foaming dyeing greatly reduces the amount of water used; in Example 5, ultrasonic foaming is used, which has a better effect. The data of Comparative Example 1 show that after removing didecyldimethylammonium chloride, the antibacterial rate is significantly reduced, and the lack of foaming agent makes the dyeing effect worse. The data of Comparative Example 2 show that after removing nano zinc oxide, the antibacterial rate is slightly reduced and the color fastness to light is reduced. The data of Comparative Example 3 show that the addition method of component D and dustproof oil has a great influence.

Claims

1. A high-fastness disperse red dye composition suitable for dyeing acetate fiber, characterized in that: The invention comprises component A, component B, component C, component D, a dispersant, white carbon black and dust-proof oil. Component A, component B, component C, white carbon black and the dispersant are uniformly mixed to obtain a mixture. Component D and the dust-proof oil are then uniformly mixed and added to the mixture by micron spraying, and stirred and mixed uniformly to obtain a high-fastness disperse red dye composition suitable for dyeing acetate fiber. The structure of component A is shown in Formula 1, and the structure of component B is shown in Formula 2. The component C is aluminum oxide or zinc oxide; The component D is didecyldimethylammonium chloride.

2. The high-fastness disperse red dye composition suitable for dyeing acetate fiber according to claim 1, characterized in that The dispersant is at least one of dispersant NNO, dispersant MF and dispersant CNF.

3. The high-fastness disperse red dye composition suitable for dyeing acetate fiber according to claim 1, characterized in that The aluminum oxide or zinc oxide is in the form of nanoparticles.

4. The high-fastness disperse red dye composition suitable for dyeing acetate fiber according to claim 1, characterized in that When R1 is H and R2 is CH3COO, it is structure A1 of formula 1; when R1 is CN and R2 is H, it is structure A2 of formula 1; when R1 is Cl and R2 is H, it is structure A3 of formula 1; when R3 is Cl and R4 is NHCOCH3, it is structure B1 of formula 2; when R3 is H and R4 is NHCOCH3, it is structure B2 of formula 2; when R3 is CN and R4 is CH3, it is structure B3 of formula 2; when R4 is Br and R4 is NHCOCH3, it is structure B4 of formula 2.

5. The high-fastness disperse red dye composition suitable for dyeing acetate fiber according to claim 4, characterized in that The component A is A3, and the component B is B1.

6. The high-fastness disperse red dye composition suitable for dyeing acetate fiber according to claim 1, characterized in that The composition is composed of the following substances in parts by mass: Component A 5-20 parts Component B 30-60 parts Component C 0.1~1 part Component D 0.5-1 part 0.5~1 part of white carbon black 20-55 parts of dispersant 0.01 to 1 part of dust-proof oil.

7. A method for using the high-fastness disperse red dye composition suitable for dyeing acetate fiber according to any one of claims 1 to 6, characterized in that: The following steps are involved: S11: preparing the fabric to be dyed, and then uniformly mixing the composition, ethanol, polyacrylamide and water to prepare a dyeing solution, wherein the weight of the composition is 2% of the weight of the fabric, the bath ratio is 4:1, the weight of the ethanol is 1% of the weight of the water, and the weight of the polyacrylamide is 0.05% of the weight of the water; S12: adding the dyeing liquid into an automatic foaming machine for foaming, and then applying the foam to the surface of the fabric using a foam applying device, and then breaking the bubbles for dyeing, wherein the bubble breaking method is to use a scraper to push the bubbles or ultrasonically break the bubbles; S13: The fabric dyed in step S12 is steamed for color fixation, soaped, washed, and dried to obtain the dyed fabric.

8. A method for using the high-fastness disperse red dye composition suitable for dyeing acetate fiber according to any one of claims 1 to 6, characterized in that: The following steps are involved: S21: preparing the fabric to be dyed, and then uniformly mixing the composition, ethanol and water to prepare a dyeing solution, wherein the weight of the composition is 2% of the weight of the fabric, the bath ratio is 8:1, and the pH value is adjusted to 4-5 with acetic acid, and the weight of the ethanol is 1% of the weight of the water; S22: Place the fabric into the dyeing solution obtained in step S21, heat it to 110°C, keep it warm for 45 to 60 minutes, cool it to 50°C, then wash it, reduce it, wash it again, and dry it to obtain the dyed fabric.

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