Reactive blue dye suitable for dyeing composite cellulose fibers, and compounding method and application thereof

Abstract

The invention discloses a reactive blue dye suitable for dyeing composite cellulose fibers and a compounding method and application thereof, and belongs to the field of dyes. The compounding method comprises the following steps: blending 60-80 wt% of a dye A, 5-25 wt% of a dye B, 5-15 wt% of a dye C and 0-30 wt% of an auxiliary agent D according to color matching of three primary colors; the reactive blue dye obtained by the compounding method can solve the problems of large color difference, poor cloth cover saturation and poor fullness after the cotton and tencel blended or interwoven fabric is subjected to one-bath dyeing treatment by the existing dye.

Description

Technical Field

[0001] The invention relates to the field of dyes, and more particularly to a reactive blue dye suitable for dyeing composite cellulose fibers, a compounding method and an application thereof. Background Art

[0002] With the continuous advancement of various textile processing technologies and the growing consumer demand for diversified, comfortable, and personalized clothing, Tencel fabrics are becoming increasingly popular due to their excellent performance and environmental friendliness. The use of cotton-Tencel composite fiber fabrics in clothing is increasing. As people's demands for clothing quality continue to rise, the requirements for various fastness properties of fabrics are also becoming more stringent, and the standards for color saturation and richness are becoming increasingly stringent. Some traditional dyes are no longer able to meet the dyeing needs of cotton-Tencel composite fiber fabrics.

[0003] During the dyeing process of blended or interwoven fabrics of cotton and Tencel, due to the different color yields of the two fibers to the dye, the color depth of the fabrics will be different after dyeing under the same dyeing conditions. In addition, the dyed fabrics also have problems such as insufficient saturation and fullness of the fabric surface and poor levelness of dyeing, which seriously affect the fabric surface effect and make it difficult for the dyed fabrics to meet customer quality requirements.

[0004] Therefore, it is necessary to provide a compounding method for reactive dye blue suitable for dyeing composite cellulose fibers. The reactive blue dye obtained by this method can effectively solve the problems of large color difference, insufficient saturation and poor fullness of the fabric surface after the existing dyes are used to dye cotton and Tencel blended or interwoven fabrics in the same bath. Summary of the Invention

[0005] In response to the problems existing in the prior art, the purpose of the present invention is to provide a reactive blue dye suitable for dyeing composite cellulose fibers, a compounding method and application thereof; the reactive blue dye obtained by the compounding method can solve the problems of large color difference, insufficient saturation and poor fullness of the fabric surface after the existing dyes are used to dye cotton and Tencel blended or interwoven fabrics in the same bath.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A compounding method for reactive dye blue suitable for dyeing composite cellulose fibers comprises mixing 60-80 wt% of dye A, 5-25 wt% of dye B, 5-15 wt% of dye C and 0-30 wt% of auxiliary agent D according to the color combination of three primary colors;

[0008] The general formula of the dye A is shown below:

[0009]

[0010] The general formula of the dye B is shown below:

[0011]

[0012] The general formula of the dye C is shown below:

[0013]

[0014] Among them, D1, D2, D4, D5, D6 and D7 are each independently

[0015] D3 is independently: p-phenylenediamine, m-phenylenediamine, benzidine disulfonic acid, DSD acid, M acid or hydroxyethylethylenediamine;

[0016] R1, R2, R3, R4, R5 and R6 are each independently -H, -SO3M5, -OCH3, -CH3, -SO2CH=CH2 or -SO2C2H4OSO3M6; M 1-12 Each is independently hydrogen, potassium, sodium, lithium or ammonium; X is -Cl or -F.

[0017] Furthermore, the dye A is one or a mixture of two or more of the following structural formulas:

[0018] Formula (1-1):

[0019]

[0020] Formula (1-2):

[0021]

[0022] Formula (1-3):

[0023]

[0024] Formula (1-4):

[0025]

[0026] Formula (1-5):

[0027]

[0028] Formula (1-6):

[0029]

[0030] Formula (1-7):

[0031]

[0032] The dye B is one or a mixture of two or more of the following structural formulas: Formula (2-1):

[0033]

[0034] Formula (2-2):

[0035]

[0036] Formula (2-3):

[0037]

[0038] Formula (2-4):

[0039]

[0040] The dye C is one or a mixture of two or more of the following structural formulas: Formula (3-1):

[0041]

[0042] Formula (3-2):

[0043]

[0044] Formula (3-3):

[0045]

[0046] Formula (3-4):

[0047]

[0048] Formula (3-5):

[0049]

[0050] Formula (3-6):

[0051]

[0052] Formula (3-7):

[0053]

[0054] Formula (3-8):

[0055]

[0056] Furthermore, the auxiliary agent D is one or a mixture of any two or more of sulphur dioxide, sodium hexametaphosphate, methylnaphthalene sulfonic acid formaldehyde condensate and naphthalene sulfonic acid formaldehyde condensate.

[0057] Furthermore, the blending method includes: method one is to dye cotton and Tencel fibers at different concentrations of dyes A, dye B and dye C, and then comprehensively obtain the optimal dye ratio based on the concentration ratio of dyes A, dye B and dye C used when the colors of the two fibers are closest; method two is to utilize the principle of easy observation of sensitive colors, use the three primary colors matched with it to perform three-color blending, and adjust the dye ratio slightly according to the color of cotton and Tencel to comprehensively obtain the optimal dye ratio.

[0058] Furthermore, dye A is reactive blue BF, which is a monochrome structure; the structural formula of the reactive blue BF is shown in formula (1-1):

[0059] Formula (1-1):

[0060]

[0061] Dye B and dye C are mixed to obtain reactive navy blue RC-R; the dye B is one of the following structural formulas:

[0062] Formula (2-1):

[0063]

[0064] Formula (2-2):

[0065]

[0066] The structural formula of the dye C is shown in formula (3-1):

[0067] Formula (3-1):

[0068]

[0069] Furthermore, the reactive dye blue is obtained by mixing 60-80% by weight of reactive blue BF and 10-30% by weight of reactive navy blue RC-R, with the remainder being auxiliary agent D.

[0070] The invention also provides a reactive blue dye suitable for dyeing composite cellulose fibers.

[0071] The present invention also provides an application of a reactive blue dye suitable for dyeing composite cellulose fibers. The reactive blue dye is applied to one-bath dyeing of blended or interwoven fabrics of cotton and Tencel.

[0072] Furthermore, the bath ratio of the same bath dyeing is 1:10, the dyeing temperature is 60°, and the dyeing time is 40 to 90 minutes.

[0073] The specific contents are as follows:

[0074] A compounding method for reactive dye blue suitable for dyeing composite cellulose fibers comprises mixing 60-80 wt% of dye A, 5-25 wt% of dye B, 5-15 wt% of dye C and 0-30 wt% of auxiliary agent D according to the color combination of three primary colors;

[0075] The general formula of the dye A is shown below:

[0076]

[0077] The general formula of the dye B is shown below:

[0078]

[0079] The general formula of the dye C is shown below:

[0080]

[0081] Among them, D1, D2, D4, D5, D6 and D7 are each independently

[0082] D3 is independently: p-phenylenediamine, m-phenylenediamine, benzidine disulfonic acid, DSD acid, M acid or hydroxyethylethylenediamine; R1, R2, R3, R4, R5 and R6 are each independently -H, -SO3M5, -OCH3, -CH3, -SO2CH=CH2 or -SO2C2H4OSO3M6; M 1-12 Each is independently hydrogen, potassium, sodium, lithium or ammonium; X is -C1 or -F.

[0083] Furthermore, the preferred structure of dye A (1) is as follows. The following structure is only a preferred embodiment of the present invention:

[0084] Formula (1-1):

[0085]

[0086] Formula (1-2):

[0087]

[0088] Formula (1-3):

[0089]

[0090] Formula (1-4):

[0091]

[0092] Formula (1-5):

[0093]

[0094] Formula (1-6):

[0095]

[0096] Formula (1-7):

[0097]

[0098] The preferred structure of the dye B formula (2) is as follows. The following structure is only a preferred embodiment of the present invention:

[0099] Formula (2-1):

[0100]

[0101] Formula (2-2):

[0102]

[0103] Formula (2-3):

[0104]

[0105] Formula (2-4):

[0106]

[0107] The preferred structure of the dye C formula (3) is as follows. The following structure is only a preferred embodiment of the present invention:

[0108] Formula (3-1):

[0109]

[0110] Formula (3-2):

[0111]

[0112] Formula (3-3):

[0113]

[0114] Formula (3-4):

[0115]

[0116] Formula (3-5):

[0117]

[0118] Formula (3-6):

[0119]

[0120] Formula (3-7):

[0121]

[0122] Formula (3-8):

[0123]

[0124] Furthermore, the auxiliary agent D in the reactive dye is one or a mixture of any two or more of sulfadol, sodium hexametaphosphate, methylnaphthalenesulfonic acid formaldehyde condensate and naphthalenesulfonic acid formaldehyde condensate.

[0125] The present invention also provides a reactive blue dye suitable for dyeing composite cellulose fibers. The reactive blue dye is obtained by mixing reactive blue BF and reactive navy blue RC-R according to three primary colors.

[0126] Furthermore, the compounding method comprises selecting and blending at least two dyes with different color yields on the two fibers and each having its own advantages. There are two blending methods: Method 1: Determining the ratio of the two dyes to achieve a substantially similar dye uptake based on the dye uptake of Reactive Blue BF and Reactive Navy Blue RC-R on the two fibers at various concentrations, thereby determining the optimal dye ratio; Method 2: Using the three primary colors that complement Reactive Navy Blue RC-R for three-color blending, and then utilizing the principle that sensitive colors easily observe color differences, slightly adjusting the dye ratio based on the color depth or shade differences between the dyed cotton and Tencel, thereby obtaining a reactive dye blue that can achieve similar color yields on both cotton and Tencel in composite cellulose fiber fabrics under the same dyeing bath, different dyeing depths, and different fiber ratios.

[0127] The present invention also provides an application of a reactive blue dye suitable for dyeing composite cellulose fibers. The reactive blue dye can be suitable for dyeing composite cellulose fibers at different dyeing depths and different fiber ratios under a same-bath dyeing process.

[0128] Furthermore, the bath ratio of the same-bath dyeing is 1:10, the dyeing temperature is 60°, and the dyeing time is 40 to 90 minutes.

[0129] Compared with the prior art, the advantages of the present invention are:

[0130] 1. The reactive blue dye obtained by the compounding method of the reactive blue dye of the present invention can achieve small color difference in both directions of cotton and Tencel after the blended or interwoven fabric of cotton and Tencel is dyed in the same bath, and the saturation of the fabric surface is high and the fullness is good.

[0131] 2. The reactive blue dye provided by the present invention enables cotton and Tencel blended or interwoven fabrics to achieve a balance in dyeing depth and shade of the two fibers after dyeing in the same bath at various dyeing depths.

[0132] 3. The reactive blue dye provided by the present invention can be used to directly dye cotton and Tencel blended or interwoven fabrics through one-bath dyeing, and the dyeing operation is convenient. DETAILED DESCRIPTION

[0133] Example 1:

[0134] Reactive blue dye was prepared according to the formula ratio recorded in Table 1. Then, cotton cloth and Tencel cloth were placed in a 40°C dye bath containing the reactive blue dye prepared in Table 1. The mixture was run for 10 minutes. 7 g of sodium sulfate was added and the mixture was run for 10 minutes. The temperature was raised to 60°C at a rate of 1°C / min and the mixture was run for 10 minutes. Subsequently, 2 g of sodium carbonate was added and the mixture was run for 45 minutes. The mixture was then washed with water, soaped, washed with water, and dried.

[0135] The dyed fabrics were color-measured using a DATCOLOR 850. Using cotton as the standard sample and Tencel fabric as the comparison sample, the Tencel fabrics were tested for color difference (DE < 0.25, very little or no color difference; 0.25 < DE < 0.5, very little color difference), brightness difference, saturation difference, hue difference, red-green difference, and yellow-blue difference. The test results are shown in Table 2.

[0136] Table 1 Color matching ratio of dyes

[0137]

[0138]

[0139] Table 2 Color measurement results of dyed fabrics

[0140]

[0141] The data in Tables 1 and 2 demonstrate that after dyeing cotton and Tencel in the same bath using the reactive blue dye provided by the present invention, the color difference between the two fabrics is minimal. Furthermore, the numerical differences in color parameters such as lightness difference, brilliance difference, hue difference, red-green difference, and yellow-blue difference between the two fabrics after dyeing are also very small. These results demonstrate that the colors of the dyed cotton and Tencel are very similar, effectively avoiding the problem of uneven dyeing that can occur in blended or interwoven fabrics of cotton and Tencel after dyeing.

[0142] Example 2:

[0143] 5g cotton cloth and 5g Tencel cloth, dyeing depth of 0.5%, bath ratio of 1:10, sodium sulfate 40g / L, sodium carbonate 10g / L; the specific operation is as follows:

[0144] Take 5g of cotton cloth and 5g of Tencel cloth as cloth samples, place them in 100ml of 40℃ dye bath containing 0.005g of blue dye 1 in Example 1, run for 10 minutes, add 4g of sodium sulfate, run for 10 minutes; heat to 60℃ at a rate of 1℃ / min, run for 10 minutes, add 1g of sodium carbonate, run for 45 minutes, then wash with water, soap, wash with water, and dry.

[0145] The dyed fabric was color-measured using DATCOLOR 850. The results showed that the color difference of the Tencel fabric was DE = 0.21, with cotton as the standard.

[0146] Example 3:

[0147] 5g cotton cloth and 5g Tencel cloth, dyeing depth of 1.0%, bath ratio of 1:10, sodium sulfate 50g / L, sodium carbonate 12g / L, temperature 60℃; specific operation is as follows:

[0148] Take 5g of cotton cloth and 5g of Tencel cloth as cloth samples, place them in 100ml of 40℃ dye bath containing 0.005g of blue dye 1 in Example 1, run for 10 minutes, add 4g of sodium sulfate, run for 10 minutes; heat to 60℃ at a rate of 1℃ / min, run for 10 minutes, add 1g of sodium carbonate, run for 45 minutes, then wash with water, soap, wash with water, and dry.

[0149] The dyed fabric was color-measured using DATCOLOR 850. The results showed that the color difference of the Tencel fabric was DE = 0.21, with cotton as the standard.

[0150] Example 4:

[0151] 5g cotton cloth and 5g Tencel cloth, dyeing depth 2.0%, bath ratio 1:10, sodium sulfate 60g / L, sodium carbonate 15g / L, temperature 60℃; specific operation is as follows:

[0152] Take 5g of cotton cloth and 5g of Tencel cloth as cloth samples, place them in 100ml of 40℃ dye bath containing 0.02g of blue dye 1 in Example 1, run for 10 minutes, add 6g of sodium sulfate, run for 10 minutes; heat to 60℃ at a rate of 1℃ / min, run for 10 minutes, add 1.5g of sodium carbonate, run for 45 minutes, then wash with water, soap, wash with water, and dry.

[0153] The dyed fabric was color-measured using DATCOLOR 850. The results showed that the color difference of the Tencel fabric was DE = 0.28, with cotton as the standard.

[0154] Example 5:

[0155] 5g cotton cloth and 5g Tencel cloth, dyeing depth 4.0%, bath ratio 1:10, sodium sulfate 60g / L, sodium carbonate 15g / L, temperature 60℃; specific operation is as follows:

[0156] Take 5g of cotton cloth and 5g of Tencel cloth as cloth samples, place them in 100ml of 40℃ dye bath containing 0.04g of blue dye 1 in Example 1, run for 10min, add 7g of sodium sulfate, run for 10 minutes; heat to 60℃ at a rate of 1℃ / min, run for 10min, add 2g of sodium carbonate, run for 45min, then wash with water, soap, wash with water, and dry.

[0157] The dyed fabric was color-measured using DATCOLOR 850. The results showed that the color difference of the Tencel fabric was DE = 0.09, with cotton as the standard.

[0158] As can be seen from Examples 2 to 5, the color difference values ​​of the Tencel cloth prepared by the reactive blue dye of the present invention are all less than 0.28 at different dyeing depths, which shows that after using the reactive blue dye to dye cotton and Tencel blended or interwoven fabrics, the dye can achieve a balance in the dyeing depth and color of the two fibers at all depths.

[0159] Example 6:

[0160] 2g cotton cloth and 8g Tencel cloth, dyeing depth 1.0%, bath ratio 1:10, sodium sulfate 60g / L, sodium carbonate 15g / L, temperature 60℃; specific operation is as follows:

[0161] Take 2g of cotton cloth and 8g of Tencel cloth as cloth samples, place them in 100ml of 40℃ dye bath containing 0.04g of blue dye 1 in Example 1, run for 10min, add 7g of sodium sulfate, run for 10 minutes; heat to 60℃ at a rate of 1℃ / min, run for 10min, add 2g of sodium carbonate, run for 45min, then wash with water, soap, wash with water, and dry.

[0162] The dyed fabric was color-measured using DATCOLOR 850. The results showed that the color difference of the Tencel fabric was DE = 0.23, with cotton as the standard.

[0163] Example 7:

[0164] 8g cotton cloth and 2g Tencel cloth, dyeing depth 1.0%, bath ratio 1:10, sodium sulfate 60g / L, sodium carbonate 15g / L, temperature 60℃; specific operation is as follows:

[0165] Take 8g of cotton cloth and 2g of Tencel cloth as cloth samples, place them in 100ml of 40℃ dye bath containing 0.04g of blue dye 1 in Example 1, run for 10 minutes, add 7g of sodium sulfate, run for 10 minutes; heat to 60℃ at a rate of 1℃ / min, run for 10 minutes, add 2g of sodium carbonate, run for 45 minutes, then wash with water, soap, wash with water, and dry.

[0166] The dyed fabric was color-measured using DATCOLOR 850. The results showed that the color difference of the Tencel fabric was DE = 0.20, with cotton as the standard.

[0167] Example 8:

[0168] 2g cotton cloth and 8g Tencel cloth, dyeing depth 3.0%, bath ratio 1:10, sodium sulfate 60g / L, sodium carbonate 15g / L, temperature 60℃; specific operation is as follows:

[0169] Take 2g of cotton cloth and 8g of Tencel cloth as cloth samples, place them in 100ml of 40℃ dye bath containing 0.04g of blue dye 1 in Example 1, run for 10min, add 7g of sodium sulfate, run for 10 minutes; heat to 60℃ at a rate of 1℃ / min, run for 10min, add 2g of sodium carbonate, run for 45min, then wash with water, soap, wash with water, and dry.

[0170] The dyed fabric was color-measured using DATCOLOR 850. The results showed that the color difference of the Tencel fabric was DE = 0.17, with cotton as the standard.

[0171] Example 9:

[0172] 8g cotton cloth and 2g Tencel cloth, dyeing depth 3.0%, bath ratio 1:10, sodium sulfate 60g / L, sodium carbonate 15g / L, temperature 60℃; specific operation is as follows:

[0173] Take 8g of cotton cloth and 2g of Tencel cloth as cloth samples, place them in 100ml of 40℃ dye bath containing 0.04g of blue dye 1 in Example 1, run for 10 minutes, add 7g of sodium sulfate, run for 10 minutes; heat to 60℃ at a rate of 1℃ / min, run for 10 minutes, add 2g of sodium carbonate, run for 45 minutes, then wash with water, soap, wash with water, and dry.

[0174] The dyed fabric was color-measured using DATCOLOR 850. The results showed that the color difference of the Tencel fabric was DE = 0.22, with cotton as the standard.

[0175] It can be seen from the two sets of data in Examples 6 and 7, and Examples 8 and 9 that, when other conditions remain unchanged, the color difference of the Tencel cloth is less than 0.25 when the ratio of cotton cloth to Tencel cloth in the cloth sample is changed, and the color difference between the Tencel cloth and the cotton cloth is extremely small or non-existent; these data indicate that changing the ratio of cotton cloth to Tencel cloth in the cloth sample will not increase the color difference of the Tencel cloth.

Claims

1. A compounding method for reactive dye blue suitable for dyeing composite cellulose fibers, characterized in that: According to the three primary colors, 60-80 wt% of dye A, 5-25 wt% of dye B, 5-15 wt% of dye C and 0-30 wt% of auxiliary agent D are mixed; The general formula of the dye A is shown below: The general formula of the dye B is as follows: The general formula of the dye C is shown below: Wherein, D1, D2, D4, D5, D6 and D7 are each independently R3 D3 is independently: p-phenylenediamine, m-phenylenediamine, benzidine disulfonic acid, DSD acid, M acid or hydroxyethylethylenediamine; R1, R2, R3, R4, R5 and R6 are each independently -H, -SO3M5, -OCH3, -CH3, -SO2CH=CH2 or -SO2C2H4OSO3M6; M 1-12 Each is independently hydrogen, potassium, sodium, lithium or ammonium; X is -Cl or -F.

2. The method for compounding a reactive dye blue suitable for dyeing composite cellulose fibers according to claim 1, characterized in that: The dye A is one or a mixture of two or more of the following structural formulas: Formula (1-1): Formula (1-2): Formula (1-3): Formula (1-4): Formula (1-5): Formula (1-6): Formula (1-7): The dye B is one or a mixture of two or more of the following structural formulas: Formula (2-1): Formula (2-2): Formula (2-3): Formula (2-4): The dye C is one or a mixture of two or more of the following structural formulas: Formula (3-1): Formula (3-2): Formula (3-3): Formula (3-4): Formula (3-5): Formula (3-6): Formula (3-7): Formula (3-8):

3. The method for compounding a reactive dye blue suitable for dyeing composite cellulose fibers according to claim 1, characterized in that: The auxiliary agent D is one of sodium sulfate, sodium hexametaphosphate, methyl naphthalene sulfonic acid formaldehyde condensate and naphthalene sulfonic acid formaldehyde condensate, or a mixture of any two or more thereof.

4. The method for compounding a reactive dye blue suitable for dyeing composite cellulose fibers according to claim 1, characterized in that: Dye A is reactive blue BF, which is a monochrome structure; the structural formula of the reactive blue BF is shown in formula (1-1): Formula (1-1): Dye B and dye C are mixed to obtain reactive navy blue RC-R; the dye B is one of the following structural formulas: Formula (2-1): Formula (2-2): The structural formula of the dye C is shown in formula (3-1): Formula (3-1):

5. The method for compounding a reactive dye blue suitable for dyeing composite cellulose fibers according to claim 4, characterized in that: The reactive dye blue is obtained by mixing 60-80% by weight of reactive blue BF and 10-30% by weight of reactive dark blue RC-R, and the rest is auxiliary agent D.

6. A reactive blue dye suitable for dyeing composite cellulose fibers, characterized in that: The blue reactive dye suitable for dyeing composite cellulose fibers is prepared by the compounding method of any one of claims 1 to 5.

7. The use of a reactive blue dye suitable for dyeing composite cellulose fibers according to claim 6, characterized in that: The reactive blue dye is used in one-bath dyeing of blended or interwoven fabrics of cotton and tencel.

8. The use of a reactive blue dye suitable for dyeing composite cellulose fibers according to claim 7, characterized in that: The bath ratio for same-bath dyeing is 1:10, the dyeing temperature is 60°, and the dyeing time is 40 to 90 minutes.

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