High-fastness disperse red dye composition suitable for acetate fiber dyeing and use method thereof

Abstract

The invention discloses a high-fastness disperse red dye composition suitable for acetate fiber dyeing and a use method thereof. Comprising a component A, a component B, a component C, a component D, a dispersing agent, white carbon black and dustproof oil, the component A, the component B, the component C, the white carbon black and the dispersing agent are evenly mixed to obtain a mixture, then the component D and the dustproof oil are evenly mixed and then added into the mixture in a micron spraying mode, and the mixture is evenly stirred and mixed to obtain the dustproof paint. The high-fastness disperse red dye composition suitable for acetate fiber dyeing is obtained. The dyeing method of the composition is simple, and the prepared high-fastness disperse red dye composition suitable for acetate fiber dyeing is good in deep dyeing property and has excellent color fastness to solarization, washing, friction, perspiration and the like; no forbidden aromatic amine or sensitization carcinogenic dye is contained; and the organic chlorine carrier and the quinoline conform to the OEKO-TEX Standard 100 index of the textile.

Description

Technical Field

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

[0002] Acetate fabric is a semi-synthetic fiber material made from cellulose fiber after acetylation. It has good moisture absorption, breathability, antistatic, deodorization, drape and gloss. It is widely used in high-end clothing fabrics, linings, dresses, scarves, ties, pajamas, etc. Acetate fabric has poor heat resistance and alkali resistance. Under alkaline conditions, acetate groups will undergo saponification, causing the fiber gloss to decrease.

[0003] Traditional disperse dyes 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 have the advantages of high coloring rate, good dye migration, and bright color. However, they have poor wearing fastness such as washing and sweat resistance, and most of them are banned allergenic and carcinogenic dyes, which do not meet environmental protection requirements. Conventional polyester disperse dyes on the market have problems such as low dye coloring rate, heavy color of washing residual liquid, and many floating colors on the surface when dyeing acetate fabrics at low temperatures. Therefore, it is particularly important to develop high-fastness disperse dyes suitable for dyeing acetate fabrics.

[0004] CN104905436B discloses a dyeing and finishing process for cuprammonia viscose acetate fiber fabric, which belongs to the technical field of fabric dyeing. It is characterized by being interwoven with three kinds of fibers: cuprammonia fiber, viscose fiber and acetate fiber. The process steps include: one washing - pretreatment - two washings - acetic acid dyeing - three washings - cuprammonia viscose dyeing - four washings - acid washing to adjust pH value out of the cylinder - one drying - one shaping - soft finishing - two drying - two shaping; the pretreatment is treated with a mild neutral treatment liquid. However, the dyeing process is relatively complicated, and the effect still has a lot of room for 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, 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 and evenly mixed in the composition, and the effect is better.

[0006]

[0007] Adding white carbon black into 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 didecyl dimethyl ammonium 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 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; and 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 hydrogen atom of the azo group, shielding the azo group, 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] Dispersant 20-55 parts

[0021] Dust-proof oil 0.01 to 1 part.

[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 a 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: adding the dyeing liquid into an automatic foaming machine for foaming, and then applying the foam to the fabric surface by using a foam applying device, and then breaking 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, and can break the tiny bubbles, so the effect is better;

[0025] S13: The fabric dyed in step S12 is steamed to fix the color, 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 an appropriate proportion of polyacrylamide can make the dyeing liquid have suitable viscosity, sufficient foaming and good effects.

[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: preparing the fabric to be dyed, and then evenly 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. Adding a small amount of ethanol can increase the solubility of the fuel and make the dust-proof oil better mixed in the dyeing solution, and the effect is better;

[0029] S22: Put 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: 2 to 5 g / L of hydrosulfite, 1 g / L of soda ash, 0.5 g / L of anti-staining agent, 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 fiber, with good dyeing depth, excellent color fastness to sunlight, washing, friction, sweat and other clothing;

[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 embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used 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 Chemicals 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] Didecyl dimethyl ammonium chloride 7kg

[0041] White carbon black 6kg

[0042] Dispersant MF 285kg

[0043] Dustproof oil 4kg.

[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 into 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 evenly 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, and then applying the foam to the surface of the fabric by 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 to fix the color, 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] Didecyl dimethyl ammonium chloride 7kg

[0055] White carbon black 6kg

[0056] Dispersant NNO 285kg

[0057] Dustproof oil 8kg.

[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 into 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 evenly 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, and then applying the foam to the surface of the fabric by 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 to fix the color, 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] Didecyl dimethyl ammonium chloride 7kg

[0069] White carbon black 6kg

[0070] Dispersant CNF 285kg

[0071] Dustproof oil 6kg.

[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 into 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 evenly 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 mass of the ethanol is 1% of the mass of the water;

[0075] S22: putting the fabric into the dyeing solution obtained in step S21, heating it to 110° C., keeping it warm for 45 to 60 minutes, cooling it to 50° C., washing it with water, reducing it, washing it with water, and drying 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 B1400kg

[0080] Nano Alumina 6kg

[0081] Didecyl dimethyl ammonium chloride 7kg

[0082] White carbon black 6kg

[0083] Dispersant CNF 285kg

[0084] Dustproof oil 6kg.

[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 into 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 evenly 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 mass of the ethanol is 1% of the mass of the water;

[0088] S22: putting the fabric into the dyeing solution obtained in step S21, heating it to 110° C., keeping it warm for 45 to 60 minutes, cooling it to 50° C., washing it with water, reducing it, washing it with water, and drying it to obtain the dyed fabric.

[0089] Example 5

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

[0091] Comparative Example 1

[0092] The didecyldimethylammonium chloride component in Example 1 is removed, and the rest is 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 described again.

[0095] Comparative Example 3

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

[0097] The high-fastness disperse red dye composition suitable for dyeing acetate prepared in the above embodiments and comparative examples was used to dye acetate fabrics. After dyeing, the fabrics were tested by Intertek third party and did not contain banned aromatic amines. The contents of heavy metals and chlorophenols 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, color fastness to washing, color fastness to rubbing and color fastness to perspiration, and the antibacterial rate was tested according to JIS L-0217-103 method. 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, and the effect is the best. In addition, foaming dyeing is adopted, and the amount of water used is greatly reduced; ultrasonic foam breaking is adopted in Example 5, and the effect is better. The data of Comparative Example 1 show that after removing didecyl dimethyl ammonium 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 a 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 uniformly mixed and then added into the mixture by means of micron spraying, and stirred and mixed uniformly 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.

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 component C is aluminum oxide or zinc oxide.

4. The high-fastness disperse red dye composition suitable for dyeing acetate fiber according to claim 1, characterized in that: The component D is didecyldimethylammonium chloride.

5. 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.

6. 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.

7. The high-fastness disperse red dye composition suitable for dyeing acetate fiber according to claim 1, characterized in that: The component A is A3, and the component B is B1.

8. 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 Dispersant 20-55 parts Dust-proof oil 0.01 to 1 part.

9. A method for using the high-fastness disperse red dye composition suitable for dyeing acetate fiber according to any one of claims 1 to 8, characterized in that: The following steps are involved: S11: preparing a 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 by 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 ultrasonic bubble breaking; S13: The fabric dyed in step S12 is steamed to fix the color, soaped, washed and dried to obtain the dyed fabric.

10. A method for using the high-fastness disperse red dye composition suitable for dyeing acetate fiber according to any one of claims 1 to 8, characterized in that: The following steps are involved: S21: preparing the fabric to be dyed, and then evenly 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 mass of the ethanol is 1% of the mass of the water; S22: putting the fabric into the dyeing solution obtained in step S21, heating it to 110° C., keeping it warm for 45 to 60 minutes, cooling it to 50° C., washing it with water, reducing it, washing it with water, and drying it to obtain the dyed fabric.

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