阅读说明：本技术 直接混纺染料的制备方法 (Preparation method of direct blending dye ) 是由 陈锋 李茂� 侯洪明 韩钢杨 顾春妹 于 2021-08-16 设计创作，主要内容包括：本发明提供一种直接混纺染料的制备方法。所述方法包括以下步骤：使用J酸盐溶液与三聚氯氰进行一次缩合反应,得到J酸盐一缩产物；将所述J酸盐一缩产物和J酸进行二次缩合反应,得到J酸盐二缩产物；将邻氯基苯甲醚-4-磺酸进行重氮化反应,得到邻氯基苯甲醚-4-磺酸重氮盐；使所述邻氯基苯甲醚-4-磺酸重氮盐与所述J酸盐二缩产物进行偶合反应,得到偶合产物；对所述偶合产物进行铜络合反应,得到直接混纺染料。本发明的直接混纺染料的制备方法的成本低,步骤更简单,且环境污染更小,更适合实际生产。(The invention provides a preparation method of a direct blending dye. The method comprises the following steps: carrying out primary condensation reaction on the J acid salt solution and cyanuric chloride to obtain a J acid salt condensation product; carrying out secondary condensation reaction on the J acid salt first condensation product and J acid to obtain a J acid salt second condensation product; diazotizing o-chloro-anisole-4-sulfonic acid to obtain o-chloro-anisole-4-sulfonic acid diazonium salt; carrying out coupling reaction on the o-chloro anisole-4-sulfonate diazonium salt and the J acid salt di-condensation product to obtain a coupling product; and carrying out copper complexing reaction on the coupling product to obtain the direct blending dye. The preparation method of the direct blending dye has the advantages of low cost, simpler steps and less environmental pollution, and is more suitable for actual production.)

1. The preparation method of the direct blending dye is characterized by comprising the following steps of:

carrying out primary condensation reaction on the J acid salt solution and cyanuric chloride to obtain a J acid salt condensation product;

carrying out secondary condensation reaction on the J acid salt first condensation product and J acid to obtain a J acid salt second condensation product;

diazotizing o-chloro-anisole-4-sulfonic acid to obtain o-chloro-anisole-4-sulfonic acid diazonium salt;

carrying out coupling reaction on the o-chloro anisole-4-sulfonate diazonium salt and the J acid salt di-condensation product to obtain a coupling product;

and carrying out copper complexing reaction on the coupling product to obtain the direct blending dye.

2. The preparation method according to claim 1, wherein in the primary condensation reaction, the J acid salt solution is a J acid salt aqueous solution with a pH value of 6.5-8.5; and/or

And mixing the J acid salt solution with cyanuric chloride, adjusting the pH value to 1.0-3.5, and carrying out primary condensation reaction.

3. The method according to claim 1 or 2, wherein the J-acid salt solution is added to the cyanuric chloride for mixing for 0.75 to 1.5 hours at a temperature of-2 to 5 ℃; and/or

The temperature of the primary condensation reaction is-2 ℃ to 5 ℃, and the reaction time is 2.5 to 5 hours.

4. The production method according to any one of claims 1 to 3, wherein in the secondary condensation reaction, after the J acid salt-first condensate and the J acid are mixed, the temperature of the reaction system is controlled to 15 to 25 ℃; and/or

And mixing the J acid salt first condensation product and J acid, adjusting the pH value to 2.5-5.0, and heating for secondary condensation reaction.

5. The process according to any one of claims 1 to 4, wherein the temperature of the secondary condensation reaction is 30 ℃ to 55 ℃, the reaction time is 2 to 5 hours, and the temperature rise time is 0.5 to 1.5 hours.

6. The method according to any one of claims 1 to 5, wherein the diazotization reaction comprises: reacting o-chloro-anisole-4-sulfonic acid with concentrated hydrochloric acid and nitrite to obtain o-chloro-anisole-4-sulfonic acid diazonium salt;

preferably, concentrated hydrochloric acid is added into o-chloro-anisole-4-sulfonic acid, and the temperature of a reaction system during the addition is-2 ℃ to 5 ℃;

more preferably, the nitrite is dropwise added into the reaction system in the form of nitrite solution, wherein the temperature of the reaction system during dropwise addition is-2 ℃ to 5 ℃, and the dropwise addition time is 0.5 to 0.75 hours.

7. The method according to any one of claims 1 to 6, wherein the temperature of the diazotization reaction is-2 to 5 ℃ and the reaction time is 1.5 to 3 hours.

8. The preparation method according to any one of claims 1 to 7, wherein in the coupling reaction, after the o-chloroanisole-4-sulfonic acid diazonium salt is mixed with the J acid salt di-condensation product, the pH of a reaction system is adjusted to 7.5-9.0; and/or

Before the o-chloro anisole-4-sulfonic acid diazonium salt is mixed with the J acid salt di-condensation product, the temperature of the J acid salt di-condensation product is 10-15 ℃.

9. The method according to any one of claims 1 to 8, wherein the temperature of the coupling reaction is 10 ℃ to 15 ℃ and the reaction time is 4 to 6 hours.

10. The method according to any one of claims 1 to 9, wherein the temperature of the copper complexing reaction is 90 ℃ to 110 ℃; the reaction time is 3-6 hours.

Technical Field

The invention relates to a preparation method of a direct blending dye, in particular to a preparation method of a direct blending ruby D-BLL dye, belonging to the field of dye synthesis.

Background

The application range of the direct blending dye is very wide. Particularly, the direct blending ruby D-BLL dye is not only one of three primary colors of direct dyes, but also is a dye for a one-step one-bath method, so that the dye has large market ratio and wide using amount.

The synthesis process of the directly blended ruby D-BLL dye (for example, CN 101353484A) disclosed in the market at present comprises the steps of diazotization, coupling, first condensation, second condensation, third condensation, post-treatment and the like, and the ruby D-BLL dye prepared by the method has high purity, but the synthesis raw material is 1-hydroxy-2-amino-4-benzenesulfonic acid, so the cost is higher; the salting-out step is adopted in the synthesis process, so that more waste water is generated; and the synthesis steps are complicated, which is not beneficial to actual production.

Therefore, the research on a preparation method of the direct blending dye which saves cost, reduces waste water and protects the environment is a technical problem which is urgently needed to be solved.

Disclosure of Invention

Problems to be solved by the invention

In view of the technical problems in the prior art, such as high synthesis cost, high wastewater treatment cost, environmental pollution and the like, the invention provides a preparation method of a direct blending dye, in particular a preparation method of a direct blending ruby D-BLL dye, which can effectively reduce production cost, reduce wastewater and protect the environment.

Means for solving the problems

The invention provides a preparation method of a direct blending dye, which comprises the following steps:

carrying out primary condensation reaction on the J acid salt solution and cyanuric chloride to obtain a J acid salt condensation product;

carrying out secondary condensation reaction on the J acid salt first condensation product and J acid to obtain a J acid salt second condensation product;

diazotizing o-chloro-anisole-4-sulfonic acid to obtain o-chloro-anisole-4-sulfonic acid diazonium salt;

carrying out coupling reaction on the o-chloro anisole-4-sulfonate diazonium salt and the J acid salt di-condensation product to obtain a coupling product;

and carrying out copper complexing reaction on the coupling product to obtain the direct blending dye.

According to the preparation method, in the primary condensation reaction, the J acid salt solution is a J acid salt water solution with the pH value of 6.5-8.5; and/or

And mixing the J acid salt solution with cyanuric chloride, adjusting the pH value to 1.0-3.5, and carrying out primary condensation reaction.

The preparation method comprises the steps of adding the J acid salt solution into cyanuric chloride for mixing, wherein the adding time is 0.75-1.5 hours, and the adding temperature is-2-5 ℃; and/or

The temperature of the primary condensation reaction is-2 ℃ to 5 ℃, and the reaction time is 2.5 to 5 hours.

According to the preparation method, in the secondary condensation reaction, after the J acid salt first condensation product and the J acid are mixed, the temperature of a reaction system is controlled to be 15-25 ℃; and/or

And mixing the J acid salt first condensation product and J acid, adjusting the pH value to 2.5-5.0, and heating for secondary condensation reaction.

The preparation method provided by the invention is characterized in that the temperature of the secondary condensation reaction is 30-55 ℃, the reaction time is 2-5 hours, and the temperature rise time is 0.5-1.5 hours.

The preparation method according to the present invention, wherein the diazotization reaction comprises: reacting o-chloro-anisole-4-sulfonic acid with concentrated hydrochloric acid and nitrite to obtain o-chloro-anisole-4-sulfonic acid diazonium salt;

preferably, concentrated hydrochloric acid is added into o-chloro-anisole-4-sulfonic acid, and the temperature of a reaction system during the addition is-2 ℃ to 5 ℃;

more preferably, the nitrite is dropwise added into the reaction system in the form of nitrite solution, wherein the temperature of the reaction system during dropwise addition is-2 ℃ to 5 ℃, and the dropwise addition time is 0.5 to 0.75 hours.

According to the preparation method, the temperature of diazotization reaction is-2-5 ℃, and the reaction time is 1.5-3 hours.

According to the preparation method, in the coupling reaction, after the o-chloro anisole-4-sulfonic acid diazonium salt and the J acid salt di-condensation product are mixed, the pH value of a reaction system is adjusted to 7.5-9.0; and/or

Before the o-chloro anisole-4-sulfonic acid diazonium salt is mixed with the J acid salt di-condensation product, the temperature of the J acid salt di-condensation product is 10-15 ℃.

The preparation method provided by the invention is characterized in that the temperature of the coupling reaction is 10-15 ℃, and the reaction time is 4-6 hours.

The preparation method provided by the invention is characterized in that the temperature of the copper complexing reaction is 90-110 ℃; the reaction time is 3-6 hours.

ADVANTAGEOUS EFFECTS OF INVENTION

The preparation method of the direct blending dye has the advantages of low cost, simpler steps and less environmental pollution, and is more suitable for actual production.

Detailed Description

The present invention will be described in detail below. The technical features described below are explained based on typical embodiments and specific examples of the present invention, but the present invention is not limited to these embodiments and specific examples.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In other instances, methods, means, devices and steps which are well known to those skilled in the art have not been described in detail so as not to obscure the invention.

It should be noted that:

in the present specification, the numerical range represented by "numerical value a to numerical value B" means a range including the end point numerical value A, B. All units used in the present invention are international standard units unless otherwise stated, and numerical values and numerical ranges appearing in the present invention should be understood to include errors allowed in industrial production.

In the present specification, reference to "some particular/preferred embodiments," "other particular/preferred embodiments," "embodiments," and the like, means that a particular element (e.g., feature, property, and/or characteristic) described in connection with the embodiment is included in at least one embodiment described herein, and may or may not be present in other embodiments. In addition, it is to be understood that the described elements may be combined in any suitable manner in the various embodiments.

The invention provides a preparation method of a direct blending dye, which comprises the following steps:

carrying out primary condensation reaction on the J acid salt solution and cyanuric chloride to obtain a J acid salt condensation product;

carrying out secondary condensation reaction on the J acid salt first condensation product and J acid to obtain a J acid salt second condensation product;

diazotizing o-chloro-anisole-4-sulfonic acid to obtain o-chloro-anisole-4-sulfonic acid diazonium salt;

carrying out coupling reaction on the o-chloro anisole-4-sulfonate diazonium salt and the J acid salt di-condensation product to obtain a coupling product;

and carrying out copper complexing reaction on the coupling product to obtain the direct blending dye.

The preparation method of the direct blending dye has the advantages of low cost, simpler steps and less environmental pollution, and is more suitable for actual production.

The amount of the raw materials used in the preparation of the direct blended dye of the present invention can be determined according to the reaction formula, and the present invention is not particularly limited thereto.

< first condensation reaction >

The method comprises the steps of firstly carrying out primary condensation reaction, and carrying out primary condensation reaction by using a J acid salt solution and cyanuric chloride to obtain a J acid salt primary condensation product so as to prepare for subsequent secondary condensation reaction.

In some specific embodiments, in the primary condensation reaction, the J acid salt solution is a J acid salt aqueous solution with a pH value of 6.5-8.5,for example, the pH is 6.8, 7, 7.2, 7.5, 7.8, 8, 8.2, etc. For obtaining the J acid salt solution, the J acid salt solution can be obtained by mixing the J acid with an alkaline agent for reaction. As the alkaline agent, the present invention is not particularly limited, and may be a base commonly used in the art, for example: KOH, K₂CO₃、KHCO₃、NaOH、Na₂CO₃、NaHCO₃And the like, or a combination of two or more thereof. In order to quickly and properly adjust the pH value, minimize the amount of raw materials and reduce the generation of impurities, it is preferable to perform the reaction using KOH and/or NaOH.

Further, in the invention, after the J acid salt solution is mixed with cyanuric chloride, the pH value can be adjusted to 1.0-3.5, thereby being beneficial to carrying out primary condensation reaction; for example, the pH is 1.5, 1.8, 2, 2.2, 2.5, 2.8, 3, 3.2, etc. The mixing method is not particularly limited in the present invention, and the reaction is preferably carried out by adding the hydrochloride solution to cyanuric chloride in consideration of the purity of the reaction and the like.

The method of adjusting the pH is not particularly limited, and the pH can be adjusted by an alkali or an acid commonly used in the art, and the adjustment is preferably performed by using an alkali agent. As the alkaline agent, the present invention is not particularly limited, and may be a base commonly used in the art, for example: KOH, K₂CO₃、KHCO₃、NaOH、Na₂CO₃、NaHCO₃And the like, or a combination of two or more thereof. In order to quickly and appropriately adjust the pH value, minimize the amount of raw materials used, and reduce the generation of impurities, it is preferable to use Na₂CO₃And/or K₂CO₃And (6) carrying out adjustment.

Specifically, an alkaline agent may be dissolved in a solvent to obtain an alkaline agent solution, and the pH value will be adjusted using the alkaline agent solution. In particular, the solvent may be water.

When the J acid salt solution is added to cyanuric chloride, the temperature and the addition time need to be controlled, and preferably, the temperature is generally controlled to be-2 ℃ to 5 ℃, for example: -1 ℃, 0 ℃, 1 ℃, 2 ℃, 3 ℃, 4 ℃ and the like; this is because too high a temperature may cause hydrolysis of cyanuric chloride; the adding time is controlled to be 0.75-1.5 hours, for example: 0.8 hour, 1.0 hour, 1.2 hours, etc.; this is because too fast an addition may cause the pH of the reaction system to increase, which may result in hydrolysis of cyanuric chloride. For the temperature control, the temperature can be controlled to-2 ℃ to 5 ℃ by adopting a cooling mode generally. For cooling, any cooling means available in the art may be used. For faster cooling, the present invention may preferably use ice cubes and/or an ice-water mixture for cooling.

The amount of the J-acid salt solution to be added dropwise is not particularly limited in the present invention, and the addition may be carried out according to the reaction formula. The specific judgment mode is that when the Congo red test paper is blue, the dropwise adding amount of the J acid salt solution is proper.

In some specific embodiments, the temperature of the primary condensation reaction is from-2 ℃ to 5 ℃, for example: -1 ℃, 0 ℃, 1 ℃, 2 ℃, 3 ℃, 4 ℃ and the like; the reaction time is 2.5-5 hours, for example: 2.8 hours, 3.0 hours, 3.5 hours, 4 hours, 4.5 hours, etc. When the reaction temperature is-2-5 ℃ and the reaction time is 2.5-5 hours, the reaction conditions are appropriate, and the purity of the obtained product is high.

Specifically, in the present invention, the reaction formula of the primary condensation reaction may be:

< second condensation reaction >

And then, carrying out secondary condensation reaction on the J acid salt first condensation product and J acid to obtain a J acid salt second condensation product, wherein the J acid salt second condensation product is used as a direct blending ruby D-BLL dye intermediate to prepare for the subsequent coupling reaction.

In the secondary condensation reaction, the J acid used is a solid J acid. Specifically, solid J acid may be added to the J acid salt first condensation product to perform a secondary condensation reaction, thereby obtaining a J acid salt second condensation product.

In some embodiments, the temperature of the reaction system during the mixing of the J-acid salt first condensation product and the J-acid in the secondary condensation reaction is controlled to be 15-25 ℃, for example: 16 deg.C, 17 deg.C, 18 deg.C, 19 deg.C, 20 deg.C, 21 deg.C, 22 deg.C, 23 deg.C, 24 deg.C, etc. When the temperature of the reaction system is 15-25 ℃, the whole reactant is relatively stable and is not easy to decompose.

In some specific embodiments, the J-acid salt first condensation product and J-acid are mixed and then adjusted to have a pH of 2.5-5.0, and then subjected to a secondary condensation reaction after temperature rise, for example, to have a pH of 2.8, 3, 3.2, 3.5, 3.8, 4, 4.2, 4.5, 4.8, etc.; the reaction speed of reactants reaches the fastest speed and is most difficult to decompose under the condition that the pH value is 2.5-5.0, the reaction speed can be improved, and the yield and the purity of products are ensured. The method of adjusting the pH is not particularly limited, and the pH can be adjusted by an alkali or an acid commonly used in the art, and the adjustment is preferably performed by using an alkali agent. As the alkaline agent, the present invention is not particularly limited, and may be a base commonly used in the art, for example: KOH, K₂CO₃、KHCO₃、NaOH、Na₂CO₃、NaHCO₃One or a combination of two or more of them. In order to quickly and appropriately adjust the pH value, minimize the amount of raw materials used, and reduce the generation of impurities, it is preferable to use Na₂CO₃And/or K₂CO₃And (6) carrying out adjustment.

Specifically, an alkaline agent may be dissolved in a solvent to obtain an alkaline agent solution, and the pH value will be adjusted using the alkaline agent solution. In particular, the solvent may be water.

In some specific embodiments, the temperature of the secondary condensation reaction is from 30 ℃ to 55 ℃, for example: 32 deg.C, 35 deg.C, 38 deg.C, 40 deg.C, 42 deg.C, 45 deg.C, 48 deg.C, 50 deg.C, 52 deg.C, etc.; the reaction time is 2-5 hours, for example: 2.5 hours, 3 hours, 3.5 hours, 4 hours, 4.5 hours, etc. When the reaction temperature is 30-55 ℃ and the reaction time is 2-5 hours, the reaction conditions are appropriate, and the purity of the obtained product is high. In addition, the time for the temperature rise may be 0.5 to 1.5 hours, for example: 0.7 hour, 0.8 hour, 0.9 hour, 1 hour, 1.2 hours, etc. Specifically, in the present invention, the reaction formula of the secondary condensation reaction may be:

< diazotization reaction >

And performing diazotization reaction on o-chloro-anisole-4-sulfonic acid to obtain o-chloro-anisole-4-sulfonic acid diazonium salt.

In some specific embodiments, the diazotization reaction comprises: reacting o-chloro-anisole-4-sulfonic acid with concentrated hydrochloric acid and nitrite to obtain o-chloro-anisole-4-sulfonic acid diazonium salt, wherein the diazonium salt obtained through diazotization reaction is used as a diazonium component to participate in subsequent coupling reaction to obtain a product.

In some specific embodiments, concentrated hydrochloric acid is added dropwise to o-chloroanisole-4-sulfonic acid, and the temperature of the reaction system during the dropwise addition is-2 ℃ to 5 ℃, for example: -1 ℃, 0 ℃, 1 ℃, 2 ℃, 3 ℃, 4 ℃ and the like; the concentration of concentrated hydrochloric acid is not particularly limited in the present invention, and may be generally 20% to 37%, for example: 22%, 25%, 28%, 30%, 32%, 35%, etc. Specifically, the temperature of the reaction system can be reduced to the required temperature by carrying out temperature reduction treatment on the o-chloro-anisole-4-sulfonic acid. For cooling, any cooling means available in the art may be used. For faster cooling, the present invention may preferably use ice cubes and/or an ice-water mixture for cooling.

In some specific embodiments, the nitrite is added dropwise to the reaction system in the form of a nitrite solution, wherein the dropwise addition time is 0.5 to 0.75 hours, for example: 0.55 hour, 0.6 hour, 0.65 hour, 0.7 hour, etc. For the nitrite solution, a nitrite salt may be dissolved in a solvent to obtain a nitrite solution. The solvent is not particularly limited in the present invention, and may be a polar solvent commonly used in the art, such as water. Specifically, with respect to the concentration of the nitrite solution, the present invention is not particularly limited, and may be some concentrations commonly used in the art. For example, the concentration of nitrite may be 30-40%, for example: 32%, 34%, 36%, 38%, etc.

In some specific embodiments, the temperature of the diazotization reaction is-2 to 5 ℃, for example: -1 ℃, 0 ℃, 1 ℃, 2 ℃, 3 ℃, 4 ℃ and the like; the reaction time is 1.5 to 3 hours, for example: 1.8 hours, 2 hours, 2.2 hours, 2.5 hours, 2.8 hours, etc. When the temperature of the diazotization reaction is-2-5 ℃ and the reaction time is 1.5-3 hours, the purity of the reaction product is higher.

Specifically, in the present invention, the reaction formula of the diazotization reaction is as follows:

< coupling reaction >

The method continues to carry out coupling reaction, so that the o-chloro-anisole-4-sulfonic acid diazonium salt and the J acid salt di-condensation product carry out coupling reaction to obtain a coupling product.

Specifically, o-chloroanisole-4-sulfonic acid diazonium salt is added to the J acid salt di-condensation product, so that the coupling reaction can be smoothly carried out.

In some specific embodiments, the diazonium o-chloro-anisole-4-sulfonate salt is at a temperature of 10 ℃ to 15 ℃ prior to mixing with the J-acid salt di-condensate, for example: 11 ℃, 12 ℃, 13 ℃, 14 ℃ and the like.

Further, in the coupling reaction, after the o-chloro anisole-4-sulfonic acid diazonium salt and the J acid salt di-condensation product are mixed, the pH value of a reaction system is adjusted to 7.5-9.0, for example: 7.8, 8, 8.2, 8.5, 8.8, etc. The method of adjusting the pH is not particularly limited, and the pH can be adjusted by an alkali or an acid commonly used in the art, and the adjustment is preferably performed by using an alkali agent. As the alkaline agent, the present invention is not particularly limited, and may be a base commonly used in the art, for example: KOH, K₂CO₃、KHCO₃、NaOH、Na₂CO₃、NaHCO₃One or a combination of two or more of them. In order to quickly and appropriately adjust the pH value, minimize the amount of raw materials used, and reduce the generation of impurities, it is preferable to use Na₂CO₃And/or K₂CO₃And (6) carrying out adjustment.

Specifically, an alkaline agent may be dissolved in a solvent to obtain an alkaline agent solution, and the pH value will be adjusted using the alkaline agent solution. In particular, the solvent may be water.

In some specific embodiments, the temperature of the coupling reaction is from 10 ℃ to 15 ℃, for example: 11 ℃, 12 ℃, 13 ℃, 14 ℃ and the like; the reaction time is 4-6 hours, for example: 4.2 hours, 4.5 hours, 4.8 hours, 5 hours, 5.2 hours, 5.5 hours, 5.8 hours, etc. When the temperature of the coupling reaction is 10-15 ℃ and the reaction time is 4-6 hours, the purity of the reaction product is higher.

Specifically, in the present invention, the reaction formula of the coupling reaction may be:

< copper Complex reaction >

In the invention, the direct blending dye is obtained by carrying out copper complexing reaction on the coupling product.

Specifically, a copper complex reaction may be performed using a coupling product, ethanolamine, and a copper salt, thereby obtaining a direct blending dye. In the present invention, the three condensation reaction and the complexing reaction are carried out simultaneously, wherein the coupling product and ethanolamine are used as a complexing agent, and the copper salt provides a complexing reaction central atom.

In the present invention, the copper salt is not particularly limited, and may be any copper salt available in the art, for example: copper sulfate and/or copper chloride, and the like.

In some specific embodiments, the temperature of the copper complexation reaction is from 90 ℃ to 110 ℃, for example: 92 deg.C, 95 deg.C, 98 deg.C, 100 deg.C, 102 deg.C, 105 deg.C, 108 deg.C, etc.; the reaction time is 3-6 hours, for example: 3.5 hours, 4 hours, 4.5 hours, 5 hours, 5.5 hours, etc.

Further, after the copper complexing reaction, the invention also carries out the step of post-processing the copper complexing product obtained by the copper complexing reaction. The present invention is not particularly limited with respect to the step of the post-treatment, and may be some methods commonly used in the art. For example: washing, drying, etc. Preferably, the direct blending dye can be obtained only by drying treatment. As for the manner of drying, spray drying may be employed for treatment in consideration of the properties of the product.

Specifically, in the present invention, the reaction formula of the copper complexation reaction is as follows:

examples

Embodiments of the present invention will be described in detail below with reference to examples, but those skilled in the art will appreciate that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by manufacturers, and are all conventional products which can be obtained commercially or prepared conventionally.

Example 1

(1) Adding 750g of water into a beaker, then adding 70g of J acid, stirring until the J acid is completely dissolved, adjusting the pH value to 7.0 by using liquid alkali, and standing to obtain J acid salt solution for later use; meanwhile, 50g of cyanuric chloride and 150g of ice are stirred for 1 hour for standby. And dropwise adding the dissolved J acid salt solution into cyanuric chloride, keeping Congo red test paper blue, keeping the temperature at 0 ℃, keeping the dropwise adding time at 1 hour, adjusting the pH value to 2.0 by using 15% soda water after the dropwise adding is finished, keeping the temperature at 0 ℃, and stirring for reacting for 3 hours to reach the reaction end point to obtain a J acid salt condensation product.

(2) Adding 70g of solid J acid into the reaction product in the step (1), gradually heating to 20 ℃ while stirring, adjusting the pH value to 4 by using 15% of pure alkali water after the temperature reaches 20 ℃, then heating to 45 ℃, keeping the temperature and the pH value for reaction for 3.5 hours until the reaction end point is reached, and obtaining the J acid salt secondary condensation product.

(3) Dissolving 38g of sodium nitrite in 80g of water, stirring until the sodium nitrite is completely dissolved, and standing for later use; adding 109g of anthranilic ether-4-sulfonic acid into a beaker, adding 700g of ice water mixture, stirring for 1 hour, adding 96g of concentrated hydrochloric acid with the concentration of 37%, stirring for 10 minutes, cooling to 0 ℃, adding 80g of ice, simultaneously adding the dissolved sodium nitrite solution at a first-speed and second-speed, keeping the temperature at 0 ℃ during dripping, and keeping the dripping time at 30 minutes; after the dropwise addition of the sodium nitrite solution is finished, the reaction system is kept at 0 ℃ for reacting for 2 hours, and then the reaction is finished to obtain the diazonium salt.

(4) Cooling the J-acid salt secondary condensation product to 13 ℃, adding the diazonium salt, stirring for 30 minutes after the addition is finished, adjusting the pH value to 8.2 by 15 percent of soda water, keeping the temperature at 13 ℃, and reacting for 5 hours to obtain a coupling product. (5) 103g of ethanolamine and 143g of copper sulfate are respectively added into the coupling product, the mixture is stirred for 30 minutes, the temperature of the mixture is raised to 100 ℃, and then the reaction is kept for 5 hours until the reaction end point is reached. And (3) spray drying the obtained product to obtain a direct blending ruby D-BLL dye dry powder product.

Example 2

(1) Adding 500g of water into a beaker, then adding 50g of J acid, stirring until the J acid is completely dissolved, adjusting the pH value to 7.0 by using liquid alkali, and standing for later use; meanwhile, 35g of cyanuric chloride and 100g of ice are stirred for 1 hour for standby. And (3) dropwise adding the dissolved J acid salt solution into cyanuric chloride, keeping Congo red test paper blue, keeping the temperature at-2 ℃, keeping the dropwise adding time at 1 hour, adjusting the pH value to 3.0 by using 15% soda water after the dropwise adding is finished, keeping the temperature at 0, and stirring for reacting for 4 hours to reach the reaction end point to obtain a J acid salt first condensation product.

(2) Adding 50g of solid J acid into the reaction product in the step (1), gradually heating to 25 ℃ while stirring, adjusting the pH value to 3.5 by using 15% of soda water after the temperature reaches 25 ℃, heating to 40 ℃ for 1 hour, preserving the temperature and keeping the pH value for reaction for 3 hours until the reaction end point is reached, and obtaining the J acid salt secondary condensation product.

(3) Dissolving 25g of sodium nitrite in 50g of water, stirring until the sodium nitrite is completely dissolved, and standing for later use; adding 73g of anthranilic ether-4-sulfonic acid into a beaker, then adding 500g of ice water mixture, stirring for 1 hour, then adding 65g of concentrated hydrochloric acid with the concentration of 37%, stirring for 10 minutes, then cooling to 0 ℃, adding 60g of ice, simultaneously adding the dissolved sodium nitrite solution at a first-speed and second-speed, keeping the temperature at 0 ℃ during dripping, and keeping the dripping time at 35 minutes; after the dropwise addition of the sodium nitrite solution is finished, the reaction is finished after the reaction is carried out for 2 hours at the integral 0 ℃, and the diazonium salt is obtained.

(4) Cooling the J-acid salt secondary condensation product to 10 ℃, adding the diazonium salt, stirring for 45 minutes after the addition is finished, adjusting the pH value to 8.8 by 15 percent of soda water, keeping the temperature at 10 ℃, and reacting for 5 hours to obtain a coupling product.

(5) And respectively adding 70g of ethanolamine and 100g of copper sulfate into the coupling product, stirring for 30 minutes, heating the mixed solution to 100 ℃, and carrying out heat preservation reaction for 5 hours to reach the reaction end point. And (3) spray drying the obtained product to obtain a direct blending ruby D-BLL dye dry powder product.

Example 3

(1) Adding 75g of water into a beaker, then adding 10g of J acid, stirring until the J acid is completely dissolved, adjusting the pH value to 7.5 by using liquid alkali, and standing for later use; meanwhile, 5g of cyanuric chloride and 20g of ice are stirred for 1 hour for standby. And dropwise adding the dissolved J acid salt solution into cyanuric chloride, keeping Congo red test paper blue, keeping the temperature at 2 ℃, keeping the dropwise adding time at 1 hour, adjusting the pH value to 2.3 by using 15% soda water after the dropwise adding is finished, keeping the temperature at 2 ℃, and stirring for reacting for 4.5 hours to reach the reaction end point to obtain a J acid salt first condensation product.

(2) Adding 8g of solid J acid into the reaction product in the step (1), gradually heating to 20 ℃ while stirring, adjusting the pH value to 3.5 by using 15% of soda water after the temperature reaches 20 ℃, then heating to 45 ℃, wherein the heating time is 1 hour, and keeping the pH value for reaction for 3.5 hours while preserving the heat to reach the reaction end point to obtain the J acid salt secondary condensation product.

(3) Dissolving 4g of sodium nitrite in 10g of water, stirring until the sodium nitrite is completely dissolved, and standing for later use; adding 10g of anthranilic ether-4-sulfonic acid into a beaker, adding 65g of ice water mixture, stirring for 1 hour, adding 10g of concentrated hydrochloric acid with the concentration of 37%, stirring for 10 minutes, cooling to 0 ℃, adding 10g of ice, simultaneously adding dissolved sodium nitrite solution at a first-speed and a second-speed, keeping the temperature at-2 ℃ during dropping, and keeping the dropping time at 30 minutes; after the dropwise addition of the sodium nitrite solution is finished, the reaction is finished after the reaction is carried out for 2.5 hours at the integral temperature of-2 ℃ to obtain the diazonium salt.

(4) Cooling the J-acid salt secondary condensation product to 15 ℃, adding the diazonium salt, stirring for 30 minutes after the addition is finished, adjusting the pH value to 7.5 by using 15% of soda water, keeping the temperature at 13 ℃, and reacting for 5 hours to obtain a coupling product.

(5) 10g of ethanolamine and 15g of copper sulfate are respectively added into the coupling product, the mixture is stirred for 30 minutes, the temperature of the mixed solution is raised to 100 ℃, and the reaction is kept for 5 hours to reach the reaction end point. And (3) spray drying the obtained product to obtain a direct blending ruby D-BLL dye dry powder product.

Example 4

(1) Adding 150g of water into a beaker, then adding 20g of J acid, stirring until the J acid is completely dissolved, adjusting the pH value to 7.5 by using liquid alkali, and standing for later use; meanwhile, 10g of cyanuric chloride and 30g of ice are stirred for 1 hour for standby. Dropwise adding the dissolved J acid monosodium salt solution into cyanuric chloride, keeping Congo red test paper blue, keeping the temperature at 5 ℃, dropwise adding for 1 hour, adjusting the pH value to 2.5 by using 15% soda water after the addition is finished, keeping the temperature at 5 ℃, stirring for reacting for 4 hours, and then reaching the reaction end point to obtain a J acid salt first condensation product.

(2) And (3) adding 14g of solid J acid into the reaction product in the step (1), gradually heating to 20 ℃ while stirring, adjusting the pH value to 3.8 by using 15% of soda water after the temperature reaches 20 ℃, heating to 45 ℃ for 1 hour, preserving the temperature and keeping the pH value for reaction for 4.5 hours, and then reaching the reaction end point to obtain the J acid salt secondary condensation product.

(3) Dissolving 8g of sodium nitrite in 20g of water, stirring until the sodium nitrite is completely dissolved, and standing for later use; adding 20g of anthranilic ether-4-sulfonic acid into a beaker, then adding 140g of ice water mixture, stirring for 1 hour, then adding 20g of concentrated hydrochloric acid with the concentration of 37%, stirring for 10 minutes, then cooling to 0 ℃, adding 16g of ice, simultaneously adding the dissolved sodium nitrite solution at a first-speed and second-speed, keeping the temperature at 3 ℃ during dripping, and keeping the dripping time at 40 minutes; after the dropwise addition of the sodium nitrite solution is finished, the reaction is finished after the reaction is carried out for 2 hours at the temperature of 3 ℃ of the whole body, and the diazonium salt is obtained.

(4) Cooling the J-acid salt secondary condensation product to 11 ℃, adding the diazonium salt, stirring for 30 minutes after the addition is finished, adjusting the pH value to 8.2 by 15 percent of soda water, keeping the temperature at 11 ℃, and reacting for 5 hours to obtain a coupling product.

(5) And respectively adding 20g of ethanolamine and 30g of copper sulfate into the coupling product, stirring for 30 minutes, heating the mixed solution to 100 ℃, and carrying out heat preservation reaction for 4 hours to reach the reaction end point. And (3) spray drying the obtained product to obtain a direct blending ruby D-BLL dye dry powder product.

Comparative example

Referring to a synthesis method in a patent CN 101353484A, the direct blending ruby D-BLL dye is prepared by the following specific preparation steps:

(1) adding 1-hydroxy-2-amino-4-benzenesulfonic acid 40g into hydrochloric acid 20g, adjusting the temperature to 12 ℃, adding sodium nitrite solution 14g, stirring for reaction, and obtaining the diazonium salt after 1.5 hours.

(2) Dissolving 48g of 2-amino-5-naphthol-7-sulfonic acid in water, adjusting the pH value of the solution to 8 by using soda ash to fully dissolve the solution to obtain a gray black transparent solution, slowly dropwise adding the diazonium salt obtained in the step (1) into the gray black transparent solution, controlling the temperature of the system to be 15 ℃, simultaneously adjusting the pH value of the system by using soda ash to keep the pH value of the system to be 8-9, and reacting for 5 hours under the condition to obtain a monoazo product solution.

(3) Adding 20g of cyanuric chloride into the ice water mixture, stirring until suspension liquid is formed, slowly adding the product obtained in the step (2) into the suspension liquid, adjusting the pH value of the system to be 3 by using a sodium acetate solution and soda water in the adding process, controlling the reaction temperature to be 5 ℃, and reacting for 3 hours under the condition after the addition is finished to obtain a primary condensation solution.

(4) And (4) slowly heating the primary condensation liquid obtained in the step (3), adjusting the pH of a system by using a sodium acetate solution and soda water, and reacting for 4 hours under the condition when the temperature is 45 ℃ and the pH is about 6.7 to obtain a secondary condensation liquid.

(5) And (3) adding 50g of ethanolamine into the secondary condensation solution obtained in the step (4), simultaneously adjusting the pH value of a system to 7.5, controlling the reaction temperature to be 90 ℃, and reacting for 3 hours under the condition to obtain a tertiary condensation solution.

(6) And (3) adding 24g of copper sulfate solution into the tertiary condensation solution obtained in the step (5), adjusting the pH value of the system to be 7.8, controlling the reaction temperature to be 100 ℃, and performing reflux reaction for 3 hours to obtain a copper complex product solution.

(7) And (3) cooling the copper complex product solution in the step (6) to 80 ℃, adjusting the pH value to 5 by using hydrochloric acid, salting out, stirring for 30 minutes, filtering to obtain the direct blending ruby D-BLL dye, and spray drying the obtained product to obtain the direct blending ruby D-BLL dye dry powder product.

Performance testing

1g of each of the direct blended ruby D-BLL dyes obtained in the examples 1-4 and the comparative example, 100g of cotton fabric and 2-4 g of anhydrous sodium sulphate are placed in hot water at 40 ℃, stirred uniformly, heated to 98-100 ℃ at the speed of 1-1.5 ℃/min, added with 10g of anhydrous sodium sulphate, stirred uniformly, kept warm for 45min, gradually cooled to 70 ℃, washed fully and dried directly.

Taking the dried dyed fabric to measure the friction resistance, the washing resistance, the sweat stain resistance, the light fastness and the color fastness and calculating the dyeing depth, wherein the used methods refer to GB/T3920-:

TABLE 1

As can be seen from Table 1, the direct blended ruby D-BLL dyes prepared in examples 1 to 4 have smaller differences in dyeing depth and color fastness than the direct blended ruby D-BLL dyes obtained in the comparative examples, meet the requirements of commodities, and have better fastness to perspiration, washing and color than the direct blended ruby D-BLL dyes obtained by comparison to a certain extent.

Meanwhile, in the aspect of waste water, the difference between the abs value of the product foot water in the embodiment and the abs value of the foot water in the comparative example is small, but the COD value of the foot water in the embodiment is far lower than that of the foot water in the comparative example, so that the post-treatment cost of the waste water can be reduced.

Therefore, the preparation method of the direct blending ruby D-BLL dye reduces the production cost, simplifies the operation steps, simultaneously reduces the environmental pollution, is more beneficial to the enlarged production of workshops and is beneficial to realizing clean and green production.

The above examples of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.