Acid dye composition, acid dye, preparation method and application

Abstract

The invention provides an acid dye composition, an acid dye, a preparation method and application. The acid dye composition comprises the following components: a component A as shown in a formula (I), a component B as shown in a formula (II) and a component C as shown in a formula (III). The acid dye composition and the acid dye provided by the invention have small color difference after being subjected to one-bath dyeing treatment on chinlon and spandex blended fabric, and the saturation and fullness of a cloth cover are high; the acid dye composition and the acid dye provided by the invention have excellent color fastness.

Description

Technical Field

[0001] This invention relates to an acid dye composition, an acid dye, a preparation method thereon, and its uses, and belongs to the field of dyes. Background Technology

[0002] With the continuous improvement of various textile processing technologies and people's diversified, comfortable, and personalized requirements for clothing, nylon and spandex composite fiber fabrics are being used more and more in clothing. As people's requirements for clothing quality increase, their standards for the fastness of various fabrics are also rising, and they are becoming more and more stringent in terms of color saturation and fullness. Some previous dyes can no longer meet the current needs.

[0003] In nylon and spandex blends or interweaves, the significant differences in dyeing properties between the two fibers result in strong competitive dyeing during the dyeing process. Consequently, the dyed fabric exhibits color differences, failing to achieve the desired dyeing effect. If weakly acidic dyes are used, both the nylon and spandex surfaces may be dyed after sufficient boiling time. However, upon washing with hot water, the color on the spandex is immediately washed away, resulting in a noticeable "white showing" on the fabric, which does not meet customer requirements.

[0004] Therefore, researching an acid dye that can dye nylon and spandex fabrics in the same bath, resulting in a small color difference, high fabric saturation and fullness, and good fabric surface effect, has become an urgent technical problem to be solved. Summary of the Invention

[0005] The problem the invention aims to solve

[0006] In view of the technical problems existing in the prior art, the purpose of the present invention is to provide an acid dye composition and an acid dye, thereby solving the problems of large color difference, poor fabric saturation and fullness, and poor fabric surface effect after the existing dyes are used to dye nylon and spandex blended fabrics in the same bath.

[0007] Furthermore, the present invention also provides a method for preparing acid dyes, the raw materials of which are easy to obtain, the preparation method is simple and easy to implement, and it is suitable for mass production.

[0008] Solution for solving the problem

[0009] This invention provides an acid dye composition comprising the following components: component A as shown in formula (I):

[0010]

[0011] Component B as shown in formula (II):

[0012]

[0013] Component C as shown in formula (III):

[0014]

[0015] According to the acid dye composition of the present invention, the weight percentage of component A is 30% to 90% based on the total weight of the acid dye composition; the weight percentage of component B is 5% to 60%; and the weight percentage of component C is 1% to 30%.

[0016] According to the acid dye composition of the present invention, the weight percentage of component A is 30% to 80%; the weight percentage of component B is 10% to 60%; and the weight percentage of component C is 1% to 25%.

[0017] The present invention also provides an acid dye comprising the acid dye composition and auxiliaries described in the present invention.

[0018] According to the acid dye of the present invention, the mass ratio of the acid dye composition to the auxiliary agent is 1:0.01-100.

[0019] According to the acid dye of the present invention, the auxiliary agent includes one or a combination of two or more of fillers, dispersants, and cosolvents.

[0020] The present invention also provides a method for preparing an acid dye according to the present invention, which includes the following steps: mixing each dye component and auxiliary agent evenly in a mixer to obtain an acid dye; or adding auxiliary agent and water to each dye component, dissolving by pulping, and then spray drying to obtain an acid dye.

[0021] The present invention also provides the use of the acid dye according to the present invention for dyeing and / or printing fabrics.

[0022] According to the intended use of the invention, the fabric is a nylon, wool, or blend thereof.

[0023] The present invention also provides a fabric prepared by dyeing and / or printing with an acid dye according to the present invention.

[0024] The effects of the invention

[0025] The acid dye composition and acid dye of the present invention exhibit small color difference, high fabric saturation and fullness after being dyed in the same bath on nylon and spandex blended fabrics, and the acid dye composition and acid dye of the present invention also have excellent color fastness properties.

[0026] Furthermore, the preparation method of the acid dye of the present invention uses readily available raw materials, is simple and easy to implement, and is suitable for mass production. Detailed Implementation

[0027] Various exemplary embodiments, features, and aspects of the present invention will be described in detail below. The term "exemplary" as used herein means "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior to or better than other embodiments.

[0028] Furthermore, to better illustrate the present invention, numerous specific details are set forth in the following detailed embodiments. Those skilled in the art should understand that the present invention can be practiced without certain specific details. In other instances, methods, means, apparatus, and steps well known to those skilled in the art have not been described in detail in order to highlight the spirit of the present invention.

[0029] Unless otherwise stated, all units used in this specification are international standard units, and all numerical values ​​and ranges appearing in this invention should be understood to include systematic errors that are unavoidable in industrial production.

[0030] In this specification, the word "may" has two meanings: to perform a certain process and not to perform a certain process.

[0031] In this specification, references to "some specific / preferred embodiments," "other specific / preferred embodiments," "implementation," etc., refer to specific elements (e.g., features, structures, properties, and / or characteristics) related to that embodiment, which are included in at least one of the embodiments described herein and may or may not be present in other embodiments. Furthermore, it should be understood that these elements may be combined in any suitable manner in various embodiments.

[0032] In this specification, the range of values ​​referred to as "value A to value B" refers to the range including the endpoint values ​​A and B.

[0033] This invention provides an acid dye composition comprising the following components:

[0034] Component A as shown in formula (Ⅰ):

[0035]

[0036] Component B as shown in formula (II):

[0037]

[0038] Component C as shown in formula (III):

[0039]

[0040] In this invention, the compounds represented by formulas (I) to (III) can be synthesized in a manner known to those skilled in the art, or commercially available products can be used.

[0041] Furthermore, in some specific embodiments, based on the total weight of the acid dye composition, the weight percentage of component A is 30% to 90%, preferably 30% to 80%; the weight percentage of component B is 5% to 60%, preferably 10% to 60%; and the weight percentage of component C is 1% to 30%, preferably 1% to 25%.

[0042] Specifically, the content of component A can be 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, etc.; the content of component B can be 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, etc.; and the content of component C can be 1%, 2%, 5%, 10%, 15%, 20%, 25%, 30%, etc.

[0043] The present invention also provides an acid dye comprising an acid dye composition and an auxiliary agent according to the present invention, wherein the mass ratio of the acid dye composition and the auxiliary agent is 1:0.01-100, for example: 1:0.1, 1:0.5, 1:1, 1:5, 1:10, 1:20, 1:30, 1:40, 1:50, 1:60, 1:70, 1:80, 1:90, etc.

[0044] Specifically, in this invention, the auxiliary agent is one or a combination of two or more of fillers, dispersants, and cosolvents. There is no particular limitation on the specific type of dispersant; it can be a commonly used dispersant in the art. Preferably, the dispersant can be one or a combination of two or more of naphthalenesulfonic acid formaldehyde condensate and lignin sulfonate. The dye dispersant preferably includes one or a combination of one or more of the following: naphthalenesulfonic acid formaldehyde condensate (e.g., dispersant MF, dispersant CNF, dispersant NNO) or sodium lignin sulfonate (e.g., lignin 85A, lignin 83A). The filler includes one or a combination of two or more of maltodextrin and sodium sulfate.

[0045] The acid dyes of the present invention exhibit excellent color uniformity when used for dyeing nylon / spandex blended fabrics.

[0046] The present invention also provides a method for preparing an acid dye according to the present invention, comprising the following steps:

[0047] The acid dye composition is obtained by mixing the dye components and auxiliaries evenly in a mixer; or by adding auxiliaries and water to the acid dye, dissolving it by pulping, and then spray drying it.

[0048] The present invention also provides for the use of an acid dye according to the present invention for dyeing and / or printing fabrics.

[0049] According to the intended use described in this invention, the fabric is a nylon, wool, or blend thereof.

[0050] The present invention also provides a fabric prepared by dyeing and / or printing using the acid dyes described in the present invention.

[0051] Example

[0052] The embodiments of the present invention will be described in detail below with reference to examples. However, those skilled in the art will understand that the following examples are for illustrative purposes only and should not be considered as limiting the scope of the invention. Unless otherwise specified in the examples, conventional conditions or conditions recommended by the manufacturer are followed. Reagents or instruments whose manufacturers are not specified are all commercially available conventional products.

[0053] Example 1

[0054] 39 grams of component A compound, 15 grams of component B compound, 4 grams of component C compound, and 42 grams of maltodextrin were ground into powder using a mill (grinding machine) and then mixed evenly in a mixer to obtain a yellow acid dye.

[0055] Example 2

[0056] 34 grams of component A compound, 19 grams of component B compound, 6 grams of component C compound, and 41 grams of maltodextrin were ground into powder using a mill and then mixed evenly in a mixer to obtain a yellow acid dye.

[0057] Examples 3-7

[0058] According to Table 1, components A, B, C and auxiliaries are ground into powder by a pulverizer and then mixed evenly in a mixer to obtain a yellow acid dye.

[0059] Table 1 Unit: grams

[0060]

[0061] Comparative Example 1

[0062] Commercially available dyes include CI Acid Yellow 199.

[0063] Comparative Example 2

[0064] The commercially available existing dye C.I. Acid Yellow 232.

[0065] Comparative Example 3

[0066] Repeat the method of Example 1, except that the compound of formula (I) in Example 1 is replaced with C.I. Acid Yellow 49, and others remain unchanged.

[0067] Comparative Example 4

[0068] Repeat the method of Example 2, except that the compound of formula (II) in Example 2 is replaced with C.I. Acid Yellow 219, and others remain unchanged.

[0069] Dyeing Example 1

[0070] Weigh 1 g of the yellow acid dyes prepared in Examples 1 - 7 and Comparative Examples 1 - 2 respectively into a 500 ml volumetric flask to prepare an acid dye solution. Pipette 25 ml of the acid dye solution and mix it with 75 ml of water, and the dyeing depth is O.W.F 1%. Then adjust the pH of the dye bath of the above acid dye solution to 5.0 with acetic acid and sodium acetate buffer solution respectively, add 4 g of polyamide fiber and 1 g of spandex fiber for dyeing, heat up to 100 °C at a heating rate of 1 °C / min, keep warm for 55 min, cool to 50 °C, take samples, wash and dry to obtain the dyed samples.

[0071] Measure the color of the dyed fabric with a Datacolor 800 colorimeter. The results are based on the polyamide fabric as the standard and the dyed samples as the specimens to test the color change. The test results are shown in Table 2. Among them, DE represents the magnitude of the total color difference. The smaller the value, the smaller the color difference (DE < 0.3, the color difference is very small or none; 0.3 < DE < 0.5, the color difference is tiny; 0.5 < DE < 1.0, the color difference is from tiny to medium, only acceptable in some application fields; 1.0 < DE < 2.0, the color difference is medium, only acceptable in specific applications; 2.0 < DE < 4.0, the color difference is large).

[0072] Table 2

[0073]

[0074] As can be seen from Table 2, the total color differences of the acid yellow dyes in Examples 1 - 7 of the present invention are very small, and have smaller color differences compared with Comparative Example 1 and Comparative Example 2. Therefore, when the acid yellow dyes of the present invention are used for co - bath dyeing of polyamide and spandex, the color difference between the dyed polyamide and spandex is small, the surface saturation and fullness of the fabric are high, and the fabric surface effect is good.

[0075] Dyeing Example 2

[0076] Weigh 1 g of the yellow acid dyes prepared in Examples 1-7 and Comparative Examples 1-2 respectively into a 500 ml volumetric flask to prepare an acid dye solution. Pipette 25 ml of the acid dye solution and mix it with 75 ml of water, with a dyeing depth of O.W.F 1%. Then adjust the pH of the dye bath of the above acid dye solution to 5.0 with acetic acid and sodium acetate buffer solution, add 2.5 g of polyamide fiber and 2.5 g of spandex fiber for dyeing, heat it up to 100 °C at a heating rate of 1 °C / min, keep it warm for 55 min, cool it to 50 °C, take samples, wash and dry to obtain the dyed samples.

[0077] Measure the color of the dyed fabric with a Datacolor 800 colorimeter. The results are based on the polyamide fabric as the standard, and the dyed samples are used as specimens to test the color change. The test results are shown in Table 3. Among them, DE represents the magnitude of the total color difference. The smaller the value, the smaller the color difference (DE < 0.3, the color difference is very small or none; 0.3 < DE < 0.5, the color difference is tiny; 0.5 < DE < 1.0, the color difference is from tiny to medium and is only acceptable in some application fields; 1.0 < DE < 2.0, the color difference is medium and is only acceptable in specific applications; 2.0 < DE < 4.0, the color difference is large).

[0078] Table 3

[0079]

[0080] As can be seen from Table 3, the total color difference of the acid yellow dyes in Examples 1-7 of the present invention is very small, and has a smaller color difference compared with Comparative Examples 1 and Comparative Example 2. Therefore, when the acid yellow dye of the present invention is used for co-bath dyeing of polyamide and spandex, the color difference between the dyed polyamide and spandex is small, the surface saturation and fullness of the fabric are high, and the fabric effect is good.

[0081] Dyeing Example 3

[0082] Weigh 1 g of the yellow acid dyes prepared in Examples 1-7 and Comparative Examples 3-4 respectively into a 500 ml volumetric flask to prepare an acid dye solution. Pipette 50 ml of the acid dye solution and mix it with 50 ml of water, with a dyeing depth of O.W.F 2%. Then adjust the pH of the dye bath of the above acid dye solution to 5.0 with acetic acid and sodium acetate buffer solution, add 5 g of nylon fabric for dyeing, heat it up to 100 °C at a heating rate of 1 °C / min, keep it warm for 55 min, cool it to 50 °C, take samples, wash and dry to obtain the dyed samples.

[0083] Observe the color shade of the fabric sample and test its wash fastness according to the international standard ISO 105-C10. The measurement results are shown in Table 4.

[0084] Table 4 Grade

[0085]

[0086] As can be seen from Table 4, when dyeing nylon fabric, the yellow acid dye of the present invention has better wash fastness than Comparative Example 3 and Comparative Example 4.

[0087] Staining Example 4

[0088] Weigh 1 gram of the yellow acid dye prepared in Examples 1-7 and Comparative Examples 3-4 into 500 ml volumetric flasks to prepare acid dye solutions. Pipette 50 ml of the acid dye solution into a dyeing cup, add 2.5 ml of 100 g / L anhydrous sodium sulfate, 2.5 ml of 30% glacial acetic acid, and 45 ml of water to achieve an OWF of 2%. Add 5 grams of wool fabric for dyeing, heat to 100°C at a rate of 1°C / min, hold for 55 min, cool to 50°C, take samples, wash, and dry to obtain dyed samples.

[0089] The color of the fabric sample was observed and its fastness to washing, water stains and perspiration was tested according to the international standards ISO 105-C10, ISO105-E01 and ISO105-E04 respectively. The test results are shown in Tables 5 and 6.

[0090] Table 5

[0091]

[0092] Table 6

[0093]

[0094] As can be seen from Tables 5 and 6, when dyeing wool fabric, the yellow acid dye of the present invention has superior wash fastness, water fastness and perspiration fastness compared with Comparative Example 3 and Comparative Example 4.

[0095] It should be noted that although the technical solution of the present invention has been described with specific examples, those skilled in the art will understand that the present invention should not be limited thereto.

[0096] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An acid dye composition, characterized in that, Includes the following components: Component A as shown in formula (Ⅰ): Component B as shown in formula (II): Component C as shown in formula (III):

2. The acid dye composition according to claim 1, characterized in that, Based on the total weight of the acid dye composition, the weight percentage of component A is 30% to 90%; the weight percentage of component B is 5% to 60%; and the weight percentage of component C is 1% to 30%.

3. The acid dye composition according to claim 2, characterized in that, The weight percentage of component A is 30% to 80%; the weight percentage of component B is 10% to 60%; and the weight percentage of component C is 1% to 25%.

4. An acid dye, characterized in that, It comprises an acid dye composition and an auxiliary agent according to any one of claims 1 to 3.

5. The acid dye according to claim 4, characterized in that, The mass ratio of the acid dye composition to the auxiliaries is 1:0.01-100.

6. The acid dye according to claim 4 or 5, characterized in that, The additives include one or more of the following: fillers, dispersants, and cosolvents.

7. A method for preparing an acid dye according to any one of claims 4-6, characterized in that, Includes the following steps: The dye components and auxiliaries are mixed evenly in a mixer to obtain acid dyes; or auxiliaries and water are added to the dye components, the mixture is pulped and dissolved, and then spray-dried to obtain acid dyes.

8. Use of an acid dye according to any one of claims 4-6 for dyeing and / or printing fabrics.

9. The use according to claim 8, characterized in that, The fabric is made of nylon, wool, or blends thereof.

10. A fabric, characterized in that, It is prepared by dyeing and / or printing with the acid dyes according to any one of claims 4-6.

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