阅读说明：本技术 具有双反应性基团的双吖丙啶型分散染料及其制备方法和染色应用 (Bis-aziridine type disperse dyes having double reactive groups, process for their preparation and dyeing applications ) 是由 江华 郭广落 崔志华 陈维国 于 2020-11-24 设计创作，主要内容包括：本发明公开了一种具有双反应性基团的双吖丙啶型分散染料及其制备方法,本发明还同时公开了利用上述染料制备而得的分散染料混合物：由具有双反应性基团的双吖丙啶型分散染料与分散剂按照1:0.5～2的质量比混合后组成；分散剂为分散剂NNO、分散剂MF、木质素磺酸钠。本发明还同时公开了利用分散染料混合物进行的针对涤纶纤维织物的染色方法。采用本发明的方法所得的涤纶织物具有更好的耐皂洗、耐摩擦、耐升华及耐溶剂萃取等色牢度。(The invention discloses a bis-aziridine type disperse dye with double reactive groups and a preparation method thereof, and simultaneously discloses a disperse dye mixture prepared by the dye, wherein the disperse dye mixture comprises the following components in parts by weight: the dye is prepared by mixing a bis-aziridine type disperse dye with a dual reactive group and a dispersing agent according to the mass ratio of 1: 0.5-2; the dispersant is dispersant NNO, dispersant MF and sodium lignosulfonate. The invention also discloses a dyeing method for the polyester fiber fabric by using the disperse dye mixture. The polyester fabric obtained by the method has better color fastness such as soaping resistance, friction resistance, sublimation resistance, solvent extraction resistance and the like.)

1. A bis-aziridine type disperse dye having a dual reactive group, characterized by having the structural formula of any one of:

2. a process for preparing a bis-aziridine type disperse dye having a photoreactive group according to claim 1, which comprises the steps of:

mixing and reacting a raw material a, a bis-hydroxyethyl compound, potassium carbonate and N, N-dimethylformamide; the reaction temperature is 60-80 ℃, and the reaction time is 2-24 h; the molar ratio of the raw material a, the bis-hydroxyethyl compound and the potassium carbonate is 2:1: 2-6;

carrying out post-treatment on the obtained reaction solution to obtain a bis-aziridine type disperse dye with a dual reactive group;

the raw material a is as follows:

when the bis-hydroxyethyl compound isWhen the dye (I) is a bisaziridine-type disperse dye having a double reactive group;

when the bis-hydroxyethyl compound isWhen the obtained bisaziridine-type disperse dye having a double reactive group is the dye (II);

when the bis-hydroxyethyl compound isThen, the obtained product hasThe bis-aziridine type disperse dye of a dual reactive group is a dye (III).

3. A disperse dye mixture prepared using the bis-aziridine type disperse dye having a bis-reactive group according to claim 1, wherein:

the disperse dye mixture is formed by mixing a bis-aziridine type disperse dye with a dual reactive group and a dispersing agent according to the mass ratio of 1: 0.5-2; the dispersant is dispersant NNO, dispersant MF and sodium lignosulfonate.

4. A process for the preparation of a disperse dye mixture according to claim 3, characterized by comprising the steps of:

(1) mixing a bisaziridine type disperse dye with double reactive groups, a dispersing agent and water in a sand mill, and then carrying out high-speed dispersion and sand milling, wherein the sand milling speed is 3000 +/-300 revolutions per minute, and the sand milling time is 2 +/-0.5 hours, so as to obtain a dispersion liquid; the mass ratio of the water to the bis-aziridine type disperse dye with the dual reactive groups is 9-11: 1, and the mass ratio of the bis-aziridine type disperse dye with the dual reactive groups to the dispersing agent is 1: 0.5-2;

(2) and (2) carrying out spray drying on the dispersion liquid in the step (1), wherein the atomization speed is 15-20 ml/min, the inlet temperature is 300 +/-30 ℃, and the outlet temperature is 100 +/-10 ℃, so as to obtain a disperse dye mixture.

5. A dyeing method for polyester fiber fabric using the disperse dye mixture according to claim 3, characterized by comprising the steps of:

(1) preparing a 0.5-5% owf disperse dye mixture into an aqueous solution in a container, adjusting the pH to 5, and adding a 5% owf accelerating agent; the accelerating agent is dibutyl succinate;

(2) putting the nylon fabric into a container, sealing the container, and heating to a heat preservation temperature; the heating rate is 2 ℃/min, and the heat preservation temperature is 95 +/-2 ℃; the heat preservation time is 30-60 min;

(3) cooling, taking out the fabric, washing with clear water, drying in the air, and baking to obtain a dyed polyester fabric; the baking temperature is 120-180 ℃; the baking time is 0.5-2 h.

Technical Field

The invention belongs to the fields of fine chemical engineering and textile printing and dyeing, and relates to a bis-aziridine type disperse dye with a dual reactive group, a preparation method and a dyeing application thereof.

Background

Polyester fabrics are usually dyed with disperse dyes, and the disperse dyes are mainly combined with polyester fibers by weak acting forces such as van der waals force, hydrogen bonds, hydrophobic effect and the like, so that disperse dye molecules still leave the polyester fibers under severe conditions such as high humidity and heat, and the dyed polyester fabrics have the problems of color fastness reduction and the like.

The bis-aziridine compounds are a new class of substances and are widely studied in the fields of materials, chemistry, biology and the like. It is reported (see: Lepage et al, Science 2019,366,875-878) that the bis-aziridine structure forms an active carbene intermediate under high temperature (>100 ℃) or ultraviolet irradiation (wavelength around 350 nm) and thus has the ability to insert oxygen-hydrogen bonds, nitrogen-hydrogen bonds and even carbon-hydrogen bonds. The general structural formula of the bis-aziridines is as follows:

reactive disperse dyes having a bisaziridine structure as a reactive group have not been known.

Disclosure of Invention

The invention aims to provide a bis-aziridine type disperse dye with a dual reactive group, a preparation method thereof and dyeing application of polyester fabrics.

In order to solve the above technical problems, the present invention provides a bisaziridine-type disperse dye having a dual reactive group, having a structural formula of any one of:

the invention also provides a preparation method of the bis-aziridine type disperse dye with the dual reactive groups, which comprises the following steps:

mixing and reacting a raw material a, a bis-hydroxyethyl compound, potassium carbonate and N, N-dimethylformamide; the reaction temperature is 60-80 ℃, and the reaction time is 2-24 h; the molar ratio of the raw material a, the bis-hydroxyethyl compound and the potassium carbonate is 2:1: 2-6; the dosage ratio of the raw material a to the N, N-dimethylformamide is as follows: 0.05-1 mol of raw material a is matched with 1L of N, N-dimethylformamide;

carrying out post-treatment (including silica gel column separation) on the obtained reaction liquid to obtain a bis-aziridine type disperse dye with a dual reactive group; the raw material a is as follows:when the bis-hydroxyethyl compound isWhen the dye (I) is a bisaziridine-type disperse dye having a double reactive group;

when the bis-hydroxyethyl compound isWhen the obtained bisaziridine-type disperse dye having a double reactive group is the dye (II);

when the bis-hydroxyethyl compound isWhen the dye (III) is a bisaziridine-type disperse dye having a double reactive group, the resultant dye is the dye (III).

The invention also provides a disperse dye mixture prepared by using the bis-aziridine type disperse dye with the dual reactive groups, which comprises the following components in percentage by weight:

the disperse dye mixture is formed by mixing a bis-aziridine type disperse dye with a dual reactive group and a dispersing agent according to the mass ratio of 1: 0.5-2; the dispersant is dispersant NNO, dispersant MF and sodium lignosulfonate.

The invention also provides a preparation method of the disperse dye mixture, which comprises the following steps:

(1) mixing a bisaziridine type disperse dye with double reactive groups, a dispersing agent and water in a sand mill, and then carrying out high-speed dispersion and sand milling, wherein the sand milling speed is 3000 +/-300 revolutions per minute, and the sand milling time is 2 +/-0.5 hours, so as to obtain a dispersion liquid; the mass ratio of the water to the bis-aziridine type disperse dye with the dual reactive groups is 9-11: 1, and the mass ratio of the bis-aziridine type disperse dye with the dual reactive groups to the dispersing agent is 1: 0.5-2;

(2) and (2) carrying out spray drying on the dispersion liquid in the step (1), wherein the atomization speed is 15-20 ml/min, the inlet temperature is 300 +/-30 ℃, and the outlet temperature is 100 +/-10 ℃, so as to obtain a disperse dye mixture.

The invention also provides a dyeing method for polyester fiber fabric by using the disperse dye mixture, which comprises the following steps:

(1) preparing a 0.5-5% owf disperse dye mixture into an aqueous solution in a container, adjusting the pH to 5 (adopting acetic acid), and adding a 5% owf accelerating agent; the accelerating agent is dibutyl succinate;

(2) putting the nylon fabric into a container, sealing the container, and heating to a heat preservation temperature; the heating rate is 2 ℃/min, and the heat preservation temperature is 95 +/-2 ℃; the heat preservation time is 30-60 min (preferably 30 min);

after cooling (after cooling to room temperature), taking out the fabric, washing with clear water, drying in the air, and baking to obtain a dyed polyester fabric; the baking temperature is 120-180 ℃ (preferably 140-180 ℃, and more preferably 160 ℃); the baking time is 0.5-2 h (preferably 2 h).

In the process of the invention, the inventor imagines that a bisaziridine structure is used in the dye field, and the bisaziridine structure is taken as a reactive group to be combined with a hydrophobic dye parent, so as to create a novel reactive disperse dye, and possibly enable dye molecules to form covalent bond with polyester fibers. However, in practical application, the synthesized bis-aziridine dye has the defects that when the conventional polyester fabric dyeing method is used, only a small amount of dye can be covalently bonded with polyester fibers, and the color fixing rate is low.

The problem with the application of the bis-aziridine structure to the dye field is that: (1) the carbene intermediate is too active to control the reaction with the polyester fiber only; (2) polyester dyeing usually requires high temperatures, and it is concluded from the literature that bis-aziridine must be converted into carbene; (3) complex dyeing mechanism and dyeing process, etc.

Specifically, the polyester fiber, namely polyethylene terephthalate, has no active hydrogen in the structure, only has aliphatic carbon-hydrogen bonds and carbon-hydrogen bonds on a benzene ring, and has lower reaction priority; the dyeing process is that the dye is firstly depolymerized in a water phase into monomolecular dye, then the monomolecular dye is diffused to the surface of the fiber and further enters the fiber, under the condition of high dyeing temperature, the bisaziridine dye inevitably generates carbene in the water phase and preferentially reacts with water molecules to be inactivated, and a large amount of auxiliary agents remained on the surface of the fiber have the possibility of competing reaction.

On the other hand, in order to obtain a wide spectrum of colors, the structure of the dye color body usually contains hydroxyl, amino and other groups, and the groups also participate in the competitive reaction with carbene, which is not favorable for the bonding reaction between the dye and the fiber.

In order to solve the possible problems of the bisaziridine dye, the invention carries out the following attempts: the number of oxygen-hydrogen bonds and nitrogen-hydrogen bonds in the molecular structure of the dye is limited, and the side reaction of the carbene intermediate and the dye is prevented; when dyeing, a method of firstly dyeing at low temperature (less than 100 ℃) and then fixing color through high-temperature reaction is adopted, and the result shows that the dye containing a single diazirine structure can effectively improve the reaction color fixing rate to about 85% under the dyeing condition of 95 ℃ and 30 min.

However, the inventors found that under these conditions, it is difficult to continue to improve the fixation of the dye regardless of the change in the dyeing process, and at least 10% or more of the dye is still unable to form covalent bonds with the fibers. This is probably due to (1) the inevitable premature deactivation of the dye by carbene formation during dyeing before fixation; (2) during color fixation, the formed carbene can not avoid side reaction with the dye itself in a small amount.

The inventor imagines that if the dye molecule contains two bis-aziridine structures, when it forms a carbene, the dye can be firmly bonded on the fiber as long as one carbene can react with the fiber, thereby continuously improving the fixation rate.

The assumption of bis-aziridine dyes with dual reactive groups may present the following problems: (1) carbenes still have the possibility of side reactions with themselves; (2) hydrophobic dyes enter the interior of polyester fibers, the molecular structure needs to be controlled within a certain range, and the assumption of double reactive groups can greatly increase the molecular mass of the dyes, possibly influence the dyes on the fibers and further influence the color yield; (3) it is not known whether or not there is a decrease in the fixation ratio due to the mutual influence of the two reactive groups.

Therefore, the invention further updates the technical scheme, and 3 bis-aziridine type disperse dyes with double reactive groups are obtained.

Compared with the prior art, the invention has the following technical effects:

the reactive disperse dye contains two bisaziridine structures, each bisaziridine structure can generate a carbene active intermediate under the action of high temperature, and the carbene active intermediate can chemically react with polyester fibers to form a covalent bond so as to be firmly combined; compared with the dye only containing one bis-aziridine structure, the dye has higher fixation rate of the dyed polyester fabric; two reactive groups in the dye molecule are far away from each other, and the mutual influence is small, so that the respective reaction performance can be effectively exerted; the dye has moderate molecular weight, and is suitable for entering the interior of the polyester fiber to obtain satisfactory color yield; the dye molecular structure has no active oxygen-hydrogen bond or nitrogen-hydrogen bond, so that the side reaction of the carbene intermediate and the dye is effectively prevented; during dyeing, a method of firstly dyeing at low temperature (less than 100 ℃) and then fixing color through high-temperature reaction is adopted, so that the dye is effectively prevented from being deactivated, and the high-reaction color fixing rate is obtained; compared with the conventional disperse dye, the dyed polyester fabric has better color fastness such as soaping resistance, friction resistance, sublimation resistance, solvent extraction resistance and the like; the dye is convenient to synthesize, the dyeing and color fixing operation is simple, the color fixing only needs high-temperature treatment, and the dye has wide application prospect.

Detailed Description

The present invention will be described in detail and specifically by the following examples to better understand the present invention, but the following examples do not limit the scope of the present invention.

The raw material a isThey are commercially available or can be synthesized by methods known in the literature (Angew. chem. int. Ed.2018,57, 16688-16692).

The starting material b can be prepared by the method of the reference (Macromolecules 2009,42(22), 8969-8976).

Feedstock c can be prepared by the method of reference (Polymer Science, Series B,2011,53(1-2), 73-88).

Starting material d can be prepared by the method of reference (Huaxue Xuebao,2006,64(4), 343-.

Example 1: synthesis of dye (I)

Under the protection of nitrogen, raw material a (4mmol, 1.116g), raw material b (2mmol, 0.570g), potassium carbonate (8mmol, 1.106g) and N, N-dimethylformamide (40ml) are added into a three-neck flask in sequence, the temperature is raised to 80 ℃, the reaction is stirred for 10 hours, the reaction is monitored by thin-layer chromatography, and the reaction is stopped when the raw materials are completely consumed.

Water 80ml and ethyl acetate 40ml are added, extraction is carried out three times (ethyl acetate 50 ml. times.3), the organic phases are combined, the solvent (ethyl acetate) is evaporated by using a rotary evaporator, the residue is separated by 200-300 mesh silica gel column chromatography (eluent: petroleum ether/ethyl acetate 5/1, V/V) to obtain the dye (I), yellow solid, 1.08g, yield 79.1%,

¹H NMR(CDCl₃,400MHz)δ7.85(d,J＝7.2Hz,2H),7.74(dd,J¹＝7.6Hz,J²＝1.6Hz,2H),7.55-7.45(m,7H),7.41(d,J＝7.2Hz,2H),7.28(d,J＝7.6Hz,2H),6.81(d,J＝7.6Hz,2H),4.47(s,4H),3.77-3.76(m,4H),3.72-3.70(m,4H).¹³C NMR(CDCl₃,100MHz)δ152.61,150.09,143.42,137.14,130.28,129.18(q,J＝6Hz),129.11,128.80,126.78,125.06,122.61(q,J＝268Hz),122.45,111.98,80.67(q,J＝26Hz),73.41,68.54,51.91.ESI-MS:m/z＝682.2[M+H].

example 2: synthesis of dye (II)

Equivalent to that described in example 1 except that starting material b (2mmol, 0.570g) was replaced with starting material c (2mmol, 0.730g), dye (II) was obtained in the form of a red solid, 1.18g, yield 77.5%,

¹H NMR(CDCl₃,400MHz)δ8.39(d,J＝2.0Hz,1H),8.19(dd,J¹＝7.6Hz,J²＝2.0Hz,1H),7.94(d,J＝7.6Hz,2H),7.90(d,J＝7.6Hz,1H),7.51-7.48(m,6H),7.41(d,J＝7.6Hz,1H),6.99(d,J＝7.6Hz,2H),4.47(s,4H),3.79-3.76(m,4H),3.73-3.69(m,4H).¹³C NMR(CDCl₃,100MHz)δ151.20,150.09,148.30,148.08,137.14,129.15(q,J＝5Hz),128.90,128.79,126.78,125.68,125.65,122.61(q,J＝268Hz),122.28,119.78,111.98,80.67(q,J＝27Hz),73.41,68.54,51.91.ESI-MS:m/z＝761.2[M+H].

example 3: synthesis of dye (III)

The same procedures as those conducted in example 1 except that the starting material b (2mmol, 0.570g) was replaced with the starting material d (2mmol, 0.675g) gave a dye (III); blue solid, 1.12g, yield 76.3%.

¹H NMR(CDCl₃,400MHz)δ9.09(s,1H),7.51-7.47(m,4H),7.43(d,J＝7.6Hz,2H),7.40-7.36(m,4H),6.84(d,J＝7.6Hz,2H),4.51(s,4H),4.13-4.09(m,4H),3.81-3.77(m,4H).¹³C NMR(CDCl₃,100MHz)δ176.87,150.09,145.30,142.44,139.76,137.14,129.12,128.80,126.78,125.65,122.61(q,J＝268Hz),111.98,80.81,73.41,68.54,51.91.ESI-MS:m/z＝734.1[M+H].

Comparative example 1: synthesis of the comparison dye (IV)

The same procedures as those conducted in example 1 except that the starting material b (2mmol, 0.570g) was replaced with the starting material e (2mmol, 1.042g) gave a dye (IV); blue solid, 1.32g, yield 71.9%.

¹H NMR(CDCl₃,400MHz)δ9.10(s,1H),8.77(d,J＝2.0Hz,1H),8.60(d,J＝2.0Hz,1H),7.76(s,1H),7.55(d,J＝7.2Hz,2H),7.49(d,J＝7.2Hz,2H),7.46(d,J＝7.2Hz,2H),7.35(s,1H),7.30(d,J＝7.2Hz,2H),4.47(s,4H),3.94(s,3H),3.79-3.75(m,4H),3.73-3.69(m,4H),2.05(s,3H).¹³C NMR(CDCl₃,100MHz)δ169.88,155.99,149.04,148.82,144.39,137.14,133.03,131.02,129.54,129.15(q,J＝6Hz),128.79,128.56,126.78,122.61(q,J＝268Hz),116.29,115.55,110.78,109.08,108.12,80.67(q,J＝27Hz),73.41,68.54,56.58,50.81,24.11.ESI-MS:m/z＝916.2[M+H].

Comparative example 2: synthesis of the comparison dye (V)

Under the protection of nitrogen, raw material a (2mmol, 0.558g), raw material f (2mmol, 0.538g), potassium carbonate (6mmol, 0.829g) and N, N-dimethylformamide (40ml) are sequentially added into a three-necked flask, the temperature is raised to 60 ℃, the reaction is stirred for 10 hours, the reaction is monitored by thin-layer chromatography, the reaction is stopped after the raw materials are completely consumed, water (80ml) and ethyl acetate (40ml) are added, extraction is carried out for three times (50 ml multiplied by 3 of ethyl acetate), organic phases are combined, a solvent is evaporated by using a rotary evaporator, residues are separated by silica gel column chromatography (eluent: petroleum ether/ethyl acetate: 10/1) to obtain dye (V), yellow solid, 0.82g and yield is 87.7 percent,¹H NMR(CDCl₃,400MHz)δ7.74(dd,J¹＝7.6Hz,J²＝1.6Hz,2H),7.56-7.52(m,4H),7.50-7.44(m,5H),6.84(d,J＝7.6Hz,2H),4.47(s,2H),3.77(t,J¹＝4.4Hz,J²＝4.0Hz,2H),3.71(t,J¹＝4.4Hz,J²＝4.0Hz,2H),3.29(q,J＝6.4Hz,2H),1.10(t,J¹＝J²＝6.4Hz,3H).¹³C NMR(CDCl₃,100MHz)δ152.61,151.26,143.42,137.14,130.28,129.18(q,J＝6Hz),129.11,128.79,126.78,125.40,122.61(q,J＝268Hz),122.45,112.13,80.67(q,J＝27Hz),73.41,68.41,50.47,45.84,12.09.ESI-MS:m/z＝468.2[M+H].

dye mixture example 1: preparation of dye mixtures

2.0g of dye (I), 2.0g of dispersant NNO2.0g and 20g of water are added into a sand mill to be mixed, then high-speed dispersion and sand milling are carried out, the sand milling speed is 3000 r/min, the sand milling time is 2 hours, after the sand milling is finished, the obtained dispersion liquid is spray dried (the atomization speed is 15ml/min, the inlet temperature is 300 ℃, the outlet temperature is 100 ℃) to obtain a dye mixture, and the number 1 is obtained.

The dyes obtained in the preceding examples and the commercially available commercial dyes were prepared in this manner, the dye mixture obtained with the dye (II) corresponding to the reference number 2, the dye mixture obtained with the dye (III) corresponding to the reference number 3, the dye mixture obtained with the reference dye (IV) corresponding to the reference number 4, the dye mixture obtained with the reference dye V corresponding to the reference number 5, the dye mixture obtained with the reference dye VI corresponding to the reference number 6, the dye mixture obtained with the reference dye VII corresponding to the reference number 7, the dye mixture obtained with the starting material b corresponding to the reference number 8, the dye mixture obtained with the commercially available commercial dye C.I. disperse orange 37 corresponding to the reference number 9 and the dye mixture obtained with the commercially available commercial dye reactive disperse yellow GR corresponding to the reference number 10.

The structure of comparative dye VI is:

the structure of the contrast dye VII is:

c.i. disperse orange 37 has the structure:

the structure of the active disperse yellow GR is as follows:

experiment one: dissolving 0.040g of the dye mixture with the number 1 in 100ml of deionized water to prepare an aqueous solution, placing the aqueous solution in a dye vat, adjusting the pH value of the aqueous solution to 5 by adopting acetic acid, and adding 0.1g of dibutyl succinate serving as an accelerating agent; placing 2g of polyester fabric, sealing the dye vat, heating to 95 ℃ at the speed of 2 ℃/min, and keeping the temperature for 30 min; after dyeing is finished, naturally cooling the dye vat (cooling to room temperature), taking out the fabric, washing the fabric with clear water (until the washing liquid is neutral), airing the fabric, and then putting the fabric into a baking oven at 160 ℃ for baking for 2 hours to obtain a dyed polyester fabric; and testing the surface Color depth value (K/S) of the dyed fabric by using a Data Color measuring and matching instrument.

Description of the drawings: the purpose of adding the accelerating agent is to ensure that the dye can well enter the interior of the polyester fiber at a lower temperature; the further purpose is to reduce the temperature during dyeing and ensure that the bis-aziridine in the dye structure can be stably present in a complex dyeing environment; after dyeing, the dyeing accelerant is washed off from the fiber and dried (moisture is removed), so that only dye and polyester fiber are used in baking, and the color fixing rate is ensured.

Experiment two: and (3) putting the dyed polyester fabric obtained in the first experiment into a single-neck flask filled with N, N-dimethylformamide (100ml), heating to 120 ℃, keeping for 30min, taking out the fabric, cooling, washing with clear water, airing, and testing the K/S value of the fabric. The results are shown in Table 1:

TABLE 1

The color fixing rate calculation method comprises the following steps: the fixation rate (K/S value of dyed fabric after extraction with experiment two solvents)/(K/S value of dyed fabric for experiment one).

As can be seen from the results in table 1, the dye (I), the dye (II) and the dye (III) can obtain good color yield and excellent fixation rate on the polyester fabric; the result of number 4 shows that when the molecular weight of the dye is too large, the fiber dyeing capability of the dye is poor, the color yield is low, and the color fixing rate is still high; the result of the number 5 shows that the fabric dyed by the dye with only one reactive group still has more dye which can not be fixed with the polyester fiber, and the fixation rate is reduced; the results of No. 6 and No. 7 show that: the dye contains two bisaziridine groups, but when the dye exists on the same benzene ring, the color fixing rate is not obviously improved; when oxygen-hydrogen bonds and nitrogen-hydrogen bonds exist on the dye matrix, the color fixing rate is obviously reduced; the results of the serial numbers 8-10 show that the disperse dye without the bisaziridine structure cannot form covalent bond with polyester fibers under the dyeing condition provided by the invention.

Dye mixture examples 2-1,

The dispersant NNO in the dye mixture example 1 was changed to dispersant MF, with the same amount, and the dye (II) was selected; the rest are equivalent. The resulting dye mixture, No. 11. And carrying out a first experiment and a second experiment to test the K/S value of the fabric.

Dye mixture examples 2-2

The dispersant NNO in the dye mixture example 1 is changed into sodium lignosulphonate, the amount is not changed, and the dye (II) is selected; the rest are equivalent. The resulting dye mixture, No. 12. And carrying out a first experiment and a second experiment to test the K/S value of the fabric.

Dye mixture examples 2-3

The amount of dispersant NNO in the dye mixture example 1 was changed from 2.0g to 4.0g, and the dye (II) was selected; the rest are equivalent. The resulting dye mixture, No. 13. And carrying out a first experiment and a second experiment to test the K/S value of the fabric.

Dye mixture examples 2-4

The amount of dispersant NNO in the dye mixture example 1 was changed from 2.0g to 1.0g, and the dye (II) was selected; the rest are equivalent. The resulting dye mixture, No. 14. And carrying out a first experiment and a second experiment to test the K/S value of the fabric.

TABLE 2

From the results of 2, it is understood that the excellent dyeing effect can be obtained within the range of the kind and amount of the dispersant, the curing temperature and the curing time provided by the present invention.

Comparative experiment 1,

The dye mixture of number 1 was subjected to the experiment: dyeing the polyester fabric according to a conventional high-temperature high-pressure dyeing method, wherein the dyeing conditions are as follows: dye mixture 2.0% owf, bath ratio 1:50, dyeing temperature 130 ℃, heat preservation time 60min, dye bath pH adjusted to 5 with acetic acid; after dyeing is finished, the surface Color depth value (K/S) of the dyed fabric is tested by a Data Color measuring and matching instrument. The difference between the above experiment and experiment one is that: the dyeing process is different and no baking operation is carried out. Subsequently, the resulting dyed fabric was subjected to experiment two. Numbered 15.

Comparative experiment 2,

Baking the dyed polyester fabric (i.e. the fabric before the second experiment) obtained by the conventional high-temperature high-pressure dyeing method in the comparative experiment 1 in a baking oven at 160 ℃ for 2 hours; and then testing the surface Color depth value (K/S) of the dyed fabric by using a Data Color measuring and matching instrument. And a second experiment was performed. Numbered 16.

Comparative experiment 3

The baking temperature of the dye mixture in the number 1 is changed to 200 ℃ in the first experiment, and the rest of the experiments are equivalent to the first experiment and the second experiment. Numbered 17.

Comparative experiment 4

The baking time of the dye mixture in the number 1 in the first experiment is changed to 0.5h, and the rest of the experiments are equivalent to the first experiment and the second experiment. Numbered 18.

The fabric color measurement results obtained are shown in table 3:

TABLE 3

The result of the number 15 shows that the dye with two bisaziridine groups is difficult to combine with the polyester fiber by using the conventional high-temperature high-pressure method for dyeing of disperse dyes, and the suspected reason is that the high temperature causes the reaction of the intermediate for producing carbene with water to deactivate; the result of the number 16 shows that the polyester fabric dyed by the high-temperature and high-pressure dyeing method cannot be recombined with the fiber even if the polyester fabric is subjected to baking treatment, and further shows that the unfixed bisaziridine dye is inactivated in the high-temperature and high-pressure dyeing stage.

Finally, it is also noted that the above-mentioned lists merely illustrate a few specific embodiments of the invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.