阅读说明：本技术 一种高温浸染用液体分散染料及其制备方法 (Liquid disperse dye for high-temperature dip dyeing and preparation method thereof ) 是由 姜建堂 吴明华 于 2021-09-16 设计创作，主要内容包括：本发明公开了一种高温浸染用液体分散染料及其制备方法,一种高温浸染用液体分散染料包括复配分散剂、分散染料滤饼和水,所述复配分散剂占分散染料滤饼的干重质量的15～40％,所述复配分散剂为阴离子型分散剂和非离子型分散剂的混合分散剂,所述复配分散剂中阴离子型分散剂和非离子型分散剂的质量比例为8～4：2～6。本发明通过复配阴离子型分散剂和非离子型分散剂,再与分散染料滤饼和水相混合和研磨,能够制备出纳米级的液体分散染料,且液体分散染料粒径分布均匀,具有较强的分散性、扩散性和稳定性,特别是可以应用在涤纶织物的高温浸染工艺之中,且染色牢度、匀染性和残液COD等各项指标均优于现有的粉体分散染料。(The invention discloses a liquid disperse dye for high-temperature dip dyeing and a preparation method thereof, wherein the liquid disperse dye for high-temperature dip dyeing comprises a compound dispersant, a disperse dye filter cake and water, the compound dispersant accounts for 15-40% of the dry weight of the disperse dye filter cake, the compound dispersant is a mixed dispersant of an anionic dispersant and a nonionic dispersant, and the mass ratio of the anionic dispersant to the nonionic dispersant in the compound dispersant is 8-4: 2 to 6. According to the invention, the anionic dispersant and the nonionic dispersant are compounded, and then the compound is mixed and ground with the disperse dye filter cake and the water phase, so that the nano-scale liquid disperse dye can be prepared, the particle size distribution of the liquid disperse dye is uniform, the liquid disperse dye has stronger dispersibility, diffusivity and stability, the compound can be particularly applied to a high-temperature dip dyeing process of polyester fabrics, and various indexes such as dyeing fastness, leveling property, residual liquid COD (chemical oxygen demand) and the like are superior to those of the existing powder disperse dye.)

1. A liquid disperse dye for high-temperature dip dyeing is characterized in that: the dispersing agent comprises a compound dispersing agent, a disperse dye filter cake and water, wherein the compound dispersing agent accounts for 15-40% of the dry weight of the disperse dye filter cake, the compound dispersing agent is a mixed dispersing agent of an anionic dispersing agent and a nonionic dispersing agent, and the mass ratio of the anionic dispersing agent to the nonionic dispersing agent in the compound dispersing agent is 8-4: 2 to 6.

2. A liquid disperse dye for high temperature exhaust dyeing according to claim 1, wherein: the anionic dispersant is a secondary sodium alkyl sulfonate.

3. A liquid disperse dye for high temperature exhaust dyeing according to claim 1, wherein: the non-ionic dispersing agent is tristyrylphenol polyoxyethylene ether and ethylene oxide thereof.

4. A liquid disperse dye for high temperature exhaust dyeing according to claim 3, wherein: the EO number of the nonionic dispersant is 15-30.

5. A preparation method of liquid disperse dye for high-temperature dip dyeing is characterized by comprising the following steps: the method comprises the following steps:

a) uniformly mixing a compound dispersing agent, a disperse dye filter cake and water, adding first grinding beads, and pre-grinding by using an electric mixer to obtain a pre-ground dye, wherein the compound dispersing agent accounts for 15-40% of the dry weight of the disperse dye filter cake, the compound dispersing agent is a mixed dispersing agent of an anionic dispersing agent and a nonionic dispersing agent, and the mass ratio of the anionic dispersing agent to the nonionic dispersing agent in the compound dispersing agent is 8-4: 2-6;

b) adding a second grinding bead into the pre-ground dye prepared in the step a), and then grinding for the second time by using a grinding machine to obtain the liquid disperse dye for high-temperature dip dyeing.

6. The process for preparing a liquid disperse dye for high temperature exhaust dyeing according to claim 5, wherein: in the step a), the first grinding beads are glass beads, and the diameter of the first grinding beads is 2-3 mm.

7. The process for preparing a liquid disperse dye for high temperature exhaust dyeing according to claim 5, wherein: in the step a), the pre-grinding time of the electric stirrer is 20-40 min, and the pre-grinding rotating speed is 800-1000 r/min.

8. The process for preparing a liquid disperse dye for high temperature exhaust dyeing according to claim 5, wherein: in the step b), the secondary grinding time of the grinding machine is 3-5 h, and the secondary grinding rotating speed is 1000-3000 r/min.

9. The process for preparing a liquid disperse dye for high temperature exhaust dyeing according to claim 5, wherein: in the step b), the second grinding beads are zirconia beads, and the diameter of the second grinding beads is 0.5-2 mm.

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of printing and dyeing, in particular to a liquid disperse dye for high-temperature dip dyeing and a preparation method thereof.

[ background of the invention ]

The disperse dye is a nonionic dye with small molecules, simple structure and low water solubility. Since the terylene is the most widely used synthetic fiber with the largest output in the world, and the disperse dye is the main dye for dyeing and printing the terylene fiber, the disperse dye occupies a great position in the dye market.

At present, the disperse dye mainly comprises a powdery disperse dye, the content of the required auxiliary agent is high, a large amount of water is needed to remove the residual dyeing agent after dyeing or printing, so that the consumption and pollution of a large amount of water resources are easily caused, and the treatment difficulty and cost of subsequent printing and dyeing wastewater are improved. In addition, the powder disperse dye can generate dust pollution in the material melting process, and certain threat is caused to the health of workers. With the increasing emphasis of the nation on energy conservation, environmental protection and safety concepts, the energy conservation and emission reduction of the printing and dyeing processing industry gradually become important bottleneck factors for the development of printing and dyeing enterprises, and the development of novel energy-saving and emission-reduction disperse dyes has important significance.

The research and development of the liquid disperse dye provides a thought for realizing green clean printing and dyeing. The liquid disperse dye can achieve a good disperse effect under the condition of adopting less dispersant, the utilization rate of the dye is improved, and less washing or washing-free washing of textile printing or dyeing can be realized, so that the discharge of printing and dyeing wastewater is greatly reduced from the source, the development concept of energy conservation and environmental protection is realized, and the method is a research hotspot in recent years.

However, the existing liquid disperse dyes are easy to have the phenomenon that the particle size is sharply increased at high temperature, even aggregation and precipitation and the like, so that the problems of uneven high-temperature dip dyeing, easy dyeing, and the like occur, and the existing liquid disperse dyes can hardly be really applied to the high-temperature dip dyeing process. However, polyester fibers are still dyed in a high temperature exhaust process. This conflict limits the wide use of liquid disperse dyes. Therefore, the development of a liquid disperse dye suitable for high-temperature exhaust dyeing is urgently needed.

[ summary of the invention ]

The invention aims to solve the problems in the prior art, provides a liquid disperse dye for high-temperature dip dyeing and a preparation method thereof, can be applied to a high-temperature dip dyeing process of polyester fabrics, and has various indexes such as color fastness, level dyeing property, residual liquid COD (chemical oxygen demand) and the like superior to those of the existing powder disperse dye.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the liquid disperse dye for high-temperature dip dyeing comprises a compound dispersant, a disperse dye filter cake and water, wherein the compound dispersant accounts for 15-40% of the dry weight of the disperse dye filter cake, the compound dispersant is a mixed dispersant of an anionic dispersant and a nonionic dispersant, and the mass ratio of the anionic dispersant to the nonionic dispersant in the compound dispersant is 8-4: 2 to 6.

Preferably, the anionic dispersant is a secondary sodium alkyl sulfonate.

Preferably, the nonionic dispersant is tristyrylphenol polyoxyethylene ether or ethylene oxide thereof.

Preferably, the EO number of the nonionic dispersant is 15 to 30.

A preparation method of liquid disperse dye for high-temperature dip dyeing comprises the following steps:

a) uniformly mixing a compound dispersing agent, a disperse dye filter cake and water, adding first grinding beads, and pre-grinding by using an electric mixer to obtain a pre-ground dye, wherein the compound dispersing agent accounts for 15-40% of the dry weight of the disperse dye filter cake, the compound dispersing agent is a mixed dispersing agent of an anionic dispersing agent and a nonionic dispersing agent, and the mass ratio of the anionic dispersing agent to the nonionic dispersing agent in the compound dispersing agent is 8-4: 2-6;

b) adding a second grinding bead into the pre-ground dye prepared in the step a), and then grinding for the second time by using a grinding machine to obtain the liquid disperse dye for high-temperature dip dyeing.

Preferably, in the step a), the first grinding beads are glass beads, and the diameter of the first grinding beads is 2 to 3 mm.

Preferably, in the step a), the pre-grinding time of the electric stirrer is 20-40 min, and the pre-grinding rotation speed is 800-1000 r/min.

Preferably, in the step b), the secondary grinding time of the grinding machine is 3-5 h, and the secondary grinding rotating speed is 1000-3000 r/min.

Preferably, in the step b), the second grinding beads are zirconia beads, and the diameter of the second grinding beads is 0.5 to 2 mm.

The invention has the beneficial effects that:

according to the invention, the anionic dispersant and the nonionic dispersant are compounded, and then the compound is mixed and ground with the disperse dye filter cake and the water phase, so that the nano-scale liquid disperse dye can be prepared, the particle size distribution of the liquid disperse dye is uniform, and the liquid disperse dye has stronger dispersibility, diffusivity and stability, and particularly can be applied to a high-temperature dip dyeing process of polyester fabrics, and various indexes such as dyeing fastness, leveling property, residual liquid COD (chemical oxygen demand) and the like are superior to those of the existing powder disperse dye, so that the effects of energy conservation and emission reduction can be realized; triphenylethylene phenol polyoxyethylene ether with more benzene rings is used as a nonionic dispersing agent, so that the triphenylethylene phenol polyoxyethylene ether can be anchored on the surface of dye particles by utilizing strong pi-pi acting force, and in addition, a longer ethylene oxide chain can also extend into water to form steric hindrance; by adopting the secondary sodium alkyl sulfonate as the anionic dispersant, the secondary sodium alkyl sulfonate has strong dispersion and diffusivity, can also form electrostatic repulsion, and prevents collision and agglomeration among dye particles, thereby obtaining a stable system.

[ detailed description ] embodiments

Example one, preparation of liquid disperse dyes for high temperature exhaust dyeing:

a) and (2) uniformly mixing 9g of compound dispersing agent, 45g of disperse dye filter cake and 246g of water in a dyeing cup, adding glass beads with the diameter of 2mm, and pre-grinding for 30min by using a RW-20 digital display electric stirrer, wherein the pre-grinding rotating speed is 900r/min, so as to obtain the pre-ground dye, the compound dispersing agent is a mixed dispersing agent of an anionic dispersing agent and a nonionic dispersing agent, and the mass ratio of the anionic dispersing agent to the nonionic dispersing agent in the compound dispersing agent is 6: 4;

wherein the disperse dye filter cake is a disperse blue 79 filter cake; the anionic dispersant is secondary alkyl sodium sulfonate, and the nonionic dispersant is tristyrylphenol polyoxyethylene ether with EO number of 20 and ethylene oxide thereof;

b) adding zirconia beads with the diameter of 1mm into the pre-ground dye prepared in the step a), and then secondarily grinding for 2 hours by using a grinding machine, wherein the rotation speed of the secondary grinding is 2800r/min, so as to obtain the liquid disperse dye for high-temperature dip dyeing.

Example two, storage stability test of liquid disperse dyes for high temperature exhaust:

the liquid dispersion dye prepared in example one was subjected to a storage stability test, and the stability of the liquid dispersion dye at normal temperature and 60 ℃ is shown in tables 1 and 2:

days of standing at normal temperature	0	7	14	21	28
						Particle size (nm)	158.2	160.6	165.7	170.1	183.6
PDI	0.204	0.204	0.206	0.208	0.211

TABLE 1 stability of liquid disperse dyes for high temperature exhaust dyeing at ambient temperature

Days of standing at 60 ℃	0	7	14	21	28
						Particle size (nm)	158.2	165.6	174.2	185.4	200.7
PDI	0.204	0.207	0.209	0.213	0.214

TABLE 2 stability of liquid disperse dyes for high temperature exhaust dyeing at 60 ℃

As shown in tables 1 and 2 above, the liquid disperse dyes for high temperature exhaust dyeing prepared by the present method have good storage stability.

Example three, the performance test comparison of the liquid disperse dye for high temperature dip dyeing and the powder disperse dye under the high temperature and high pressure dyeing conditions:

the liquid disperse dye for high-temperature exhaust dyeing prepared in the first example and the commercially available powder disperse dye were used to dye polyester fabrics at the same concentration under high temperature and high pressure, and the dyeing properties were compared, and the results are shown in the following table 3:

TABLE 3 dyeing performance index of liquid disperse dye and powder disperse dye for high temperature dip dyeing

As shown in the above Table 3, the rubbing fastness of the liquid disperse dye for high temperature padding can reach that of the powder disperse dye, and the K/S and the unevenness of the liquid disperse dye for high temperature padding are obviously superior to those of the powder disperse dye. In addition, the COD value of the residual liquid after the high-temperature dip dyeing is dyed by the liquid disperse dye is far lower than that of the residual liquid after the high-temperature dip dyeing is dyed by the powder disperse dye.

The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.