TWI675953B - Continuous dyeing method for low-pollution fabrics, dyes and dyed fabrics - Google Patents

Abstract

A method for continuously dyeing low-contamination fabrics, dyes, and dyed fabrics, comprising immersing the fabrics in a mixed solution composed of a small-molecule aqueous dye and a thickener under normal temperature conditions, so that The molecules are strongly adhered to the cloth through the thickener, and the surface of the cloth is rolled under normal temperature conditions, so that the thickener on the cloth and the molecules of the small-molecule water-based dye are infiltrated into the space between the molecules of the cloth fiber, and then heated and dried. Dry the mixed liquid on the cloth, so that the molecules of the small molecule dye are stably fixed between the molecules of the cloth fiber through the thickener. Using the small molecule dye with the thickener, the dye molecules can be directly pressed into at normal temperature. And it is determined that between the fiber molecules of the cloth, there is no need to heat and pressurize the dyeing and dipping for a long time, and it can dye continuously and quickly, and it does not require washing to remove the residual material, reducing the pollution generation and energy waste in the dyeing process.

Description

Continuous dyeing method for low pollution cloth, dye and dyed cloth

The invention relates to a continuous dyeing method for cloth with low pollution, dyes and dyed cloths, and in particular relates to a continuous dyeing method that can infiltrate and fix small molecular water-based dyes at the surface of the cloth and its fiber molecules at normal temperature. , And the cloth dyed by applying the dyeing method, in particular, relates to stabilizing and fixing the small molecular water-based dye to the cloth by using a thickener.

In order to fix the molecules of the dye in the molecular space of the cloth fiber, to avoid the insufficient hydrolysis resistance of the cloth after dyeing, when the water is soaked, it is easy to cause the dye molecules to detach from the fiber molecules and fade; the traditional cloth dyeing technology Generally, the cloth to be dyed must be immersed in a dyeing tank containing dyeing dye for a long time, and the dye is adhered to the surface of the cloth, and then high-pressure rolling and drying are performed. 2a (as shown in Figure 1a), generally adopts the large (high) molecular dye 2a whose molecular 21a size is larger than the molecular 41a gap 42a of the cloth (or fiber) 4a, which is traditionally performed using the macromolecular dye 2a Dyeing operation of cloth 4a. When the dyeing tank is soaked with cloth 4a, it is necessary to use boiler steam to heat the dyeing tank at the same time, so that the inside of the dyeing tank generates high temperature and high pressure, so that the gap 41a of the molecules 41a of cloth 4a is enlarged due to heat, so as to reach the large (high) molecular dye 2a The molecular 21a can penetrate the molecular gap 42a of the cloth (or fiber) 4a relatively easily.

Next, the roller 5a is rolled or the dye is sprayed under high pressure to drive the molecules 21a of the macromolecular dye 2a into the gaps 42a of the molecules 41a of the cloth 4a (as shown in FIG. 1b). Subsequently, the cloth 4a is cooled, so that the molecules 41a gap 42a of the cloth 4a shrinks to the extent that the molecules 21a of the macromolecular dye 2a cannot easily enter and exit (as shown in FIG. 1c), causing the cloth 4a molecules 41a to penetrate into the gap 42a. The molecules 21a of the macromolecular dye 2a are clamped and clamped between the molecules 41a of the cloth 4a, so that the molecules 21a of the macromolecular dye 2a cannot be easily detached from the gap 42a of the molecules 41a of the cloth 4a. In this way, when the cloth 4a is washed with water or in a general heating environment, the molecules 21a of the macromolecular dye 2a in the gaps 42a of the cloth 4a molecules 41a can still be stably clamped by the molecules 41a of the cloth 4a and will not detach with the water flow. The cloth 4a does not cause the cloth 4a to fade.

However, after the above dyeing process (as shown in (b) of Fig. 1), the residual macromolecular dye or dyeing auxiliary 2a that has not penetrated into the fiber and adhered to the surface of the cloth 4a has not been clamped by the molecules 4a of the cloth 4a. Therefore, when the 60a is washed with water, the macromolecular dye or the dyeing assistant 2a will detach from the surface of the cloth 4a with water flow, and cause abnormal rendering of the objects around the cloth 4a. Therefore, the traditional dyeing technique must use a large amount of water in the dyeing process for many times to wash the dyed cloth 4a with water 60a to remove the dye attached to the surface of the molecules 4a of the cloth 4a without infiltrating the gaps 42a of the molecules 41a. Molecules 21a; Generally, the dyed cloth 4a is moved from the dyeing tank into the washing tank, and the cloth 4a in the washing tank is continuously rinsed with a large amount of water, and the molecules 41a that have not penetrated into the cloth 4a are washed away from the gap 42a and attached to the Residual dye molecules 21a on the surface of the cloth 4a. Finally, the heater 4a is used to dry the cloth 4a to complete the dyeing operation of the cloth 4a. The whole process causes a lot of waste of water resources and causes serious environmental pollution one after another.

The traditional cloth dyeing technology does not use small molecule dyes for dyeing. The reason is that when the cloth cools, the molecular gap of the fibers shrinks, because the molecules of the small molecule dyes are equivalent to or smaller than the molecules when the cloth fibers are not swollen. Therefore, after the dyeing is completed, the molecules of the small molecular dye can still be easily detached from the molecular gap of the cloth; in other words, the cloth with the molecular gap shrinking becomes smaller because the molecular gap is still larger or only slightly smaller than that of the ordinary small molecule dye. The molecular size cannot effectively and securely clamp the small molecular dyes that originally penetrated into the molecular gaps of the cloth, causing the molecules of the small molecular dyes to easily migrate away from the molecular gaps of the cloth, causing the fabric to fade; therefore, in order to achieve effective dyeing of the cloth Fixing rate. At present, the industry generally does not use small molecule dyes for cloth dyeing.

However, if cloth dyeing with macromolecular dyes is used, the cloth 4a must be immersed in the dyeing tank at high temperature and pressure for a long time, so that the gap 4a of the cloth 4a molecules 41a and the swelling become larger, in order to penetrate the macromolecular dye 2a molecules 21a. Entering the gap 42a of the cloth molecules 41a is very time consuming, so that the cloth 4a cannot be dyed quickly and continuously, and the production efficiency is difficult to improve; moreover, all the heat energy steam used comes from the boiler combustion. No matter what kind of raw material is used, it is very energy-consuming and inevitable Generates carbon emissions and polluted air, and the combined equipment of the boiler and the dyeing tank is bulky, occupies a considerable amount of installation space, and the equipment is also very expensive, which increases the cost of energy, space and equipment; in addition, the dyeing process must be repeated multiple times. A large amount of water washes away the residual dye 2a attached to the surface of the molecules 41a of the cloth 4a and not trapped in the gaps 42a of the molecules 41a, causing a large amount of waste of water resources and dyes, and the resulting waste water causes the operating environment to be humid and polluted; in addition, The process of drying the fabric 4a after washing with water, and because the water content of the fabric 4a is high, The length of time is quite energy-intensive.

In view of this, the inventor has accumulated years of research in the related fields and practical experience, and has specially created a continuous dyeing method for low-contamination fabrics and dyeing fabrics to improve the lack of the conventional techniques.

The main purpose of the present invention is to provide a method for continuously dyeing fabrics with low pollution and dyeing fabrics, and more particularly, to use a small-molecular water-based dye to easily infiltrate between fabric molecules at room temperature, and use a thickener to convert The dye is firmly fixed on the fiber surface of the cloth and the molecular space of the cloth. The cloth dyed by this dyeing method can further improve the traditional cloth dyeing technology, which has a long time and cannot improve the efficiency and energy consumption of the cloth. It has many shortcomings, such as high pollution, serious environmental pollution, large space occupation, expensive equipment, and inability to repeatedly use dyes.

In order to achieve the above-mentioned object, a continuous staining method for low-contamination cloth of the present invention includes the following steps:

Under normal temperature conditions, a cloth is immersed in a mixed solution composed of a small molecular water-based dye and a thickener, so that the small molecular water-based dye in the mixed liquid will be close to the molecular gap of the cloth because its molecular size is close to the molecular gap of the cloth. Under the condition of no heating, the dye molecules are infiltrated into the molecular space of the cloth by rolling, and then the dye molecules are adhered to the inside and outside of the cloth molecules through the adhesive force of the thickener; The dye molecules in the cloth molecule gap and the outer surface are firmly and uniformly fixed on the cloth.

Based on the above, the cloth to be dyed can be directly immersed in a mixed solution of a small molecule aqueous dye and a thickener under normal temperature conditions, and then a rolling operation is performed on the cloth to which the mixed solution is adsorbed to make the small molecule aqueous dye The molecules can fully infiltrate into the cloth molecules due to the rolling operation described above, and do not need to infiltrate the cloth at a high temperature like the traditional one, so that the dye can be smoothly and fully penetrated inside and outside the cloth molecules, continuously. The dyeing operation can be greatly accelerated to improve the dyeing efficiency of the cloth; the energy consumption that was originally required for heating can be completely eliminated, reducing energy waste.

In addition, after dyeing, the cloth does not need to be washed with water several times, which can reduce the moisture content of the dyed cloth. Not only the time required for drying and setting is greatly shortened, water resources can be greatly saved, and the production of dye wastewater and the waste water can be reduced. emission. In addition, since this case does not require the use of a traditional boiler to generate high-temperature steam, and does not require multiple immersion or cleaning of the dyeing tank, the space occupied by the equipment can be greatly reduced, and the cost of constructing the equipment can be saved.

According to the characteristics of the above main method, after the liquid mixture on the surface of the cloth is heated and dried, the molecules of the small-molecular water-based dye can be firmly fixed on the cloth by the thickener, and it is easy to completely improve the small-molecular dye. The lack of discoloration from the fabric. According to the above-mentioned main method and structural characteristics, the mixed liquid further includes a penetrant, a softening agent (which may be a citric acid softening agent), a leveling agent, and water. The weight percentage of the small molecule dye is 2% to 8%, the weight percentage of the thickener is 1.2% to 2%, the weight percentage of the penetrant is 0.4% to 0.6%, and the weight percentage of the softener is 0.2%. ~ 4%, the weight percentage of the leveling agent is 2% ~ 4%, and the rest is the percentage of water.

In order to clearly and fully disclose the present invention, and to give examples of preferred implementations to illustrate its implementation in detail, it will be described later:

Referring to Figs. 2 and 3, the drawings of the embodiment of the present invention are disclosed. The above-mentioned drawings illustrate a continuous staining method for low-contamination cloth of the present invention, which includes the following implementation steps:

Step S01: A small-molecule aqueous dye 2 and a thickener 3 (adhesive agent) are uniformly mixed to form a mixed liquid 1, which is contained in a material tank (not shown). In a better consideration, the small molecule water-based dye 2 may be a high temperature resistant small molecule (20ml) dispersing nanosublimable dye (liquid dispersing dye); the thickener 3 may be nonionic polypropylene ammonium amine. Ionic polyacrylamide will not dissolve in normal or low temperature environment.

In a feasible implementation architecture, the mixed liquid 1 further includes a penetrant, a softener, a non-ionic leveling agent, and water; the weight percentage of the small-molecule aqueous dye 2 is 2% to 8%, and the The weight percentage of thickener 3 is 1.2% to 1.8%, the weight percentage of the penetrant is 0.1% to 1%, and the weight percentage of the softener (which can be citric acid softener) is 0.2% to 0.4%. The weight percentage of the agent is 2% to 4%, and the remaining weight percentages are water.

Step S02: Soak a cloth 4 in the mixed liquid 1 of the hopper under normal temperature conditions, so that the molecules 21 of the small-molecule aqueous dye 2 in the mixed liquid 1 are adsorbed on the surface of the cloth 4 through the adhesion of the thickener 3. (As shown in (a) of FIG. 2), the size of the molecules 21 of the small-molecule aqueous dye 2 is smaller than, equal to, or slightly larger than the gaps 42 of the molecules 41 of the cloth 4.

Step S03: After the entire surface of the cloth 4 is adsorbed and filled with the mixed liquid 1, the cloth 4 is taken out of the trough, and the cloth 4 is passed through a uniform rolling mill 50 (as shown in FIG. 2 (b)). (Shown), the roller 5 of the uniform rolling car 50 is rolled under normal temperature to press the cloth 4 filled with the mixed liquid 1, so that the dye molecules 21 can be pressed into the gaps between the molecules 41 of the cloth 4 during the pressing process. In 42, the rest cannot be pressed into the gaps 42 of the molecules 41 of the cloth 4, and the part of the mixed liquid 1 remaining on the surface of the cloth 4 uses the thickener 3 contained to firmly adhere the molecules 21 of the small-molecule water-based dye 2 On the surface of the cloth 4; at the same time of pressing, the thickener 3 and the small molecule water dye 2 contained in the mixed liquid 1 on the surface of the cloth 4 will be evenly distributed on the surface of the cloth 4, thereby increasing the thickener 3 and small molecules The number and uniformity of the molecules 21 of the water-based dye 2 penetrating into the gaps 42 of the molecules 41 of the cloth 4.

Step S04: After the cloth 4 is rolled by the roller 5 of the uniform rolling car 50, it is passed through a tenter dryer, so that the heater 6 of the tenter dryer (which may be an electric lamp) is heated and dried. The mixed liquid 1 in the surface and the gap 42 of the molecular 41 (as shown in (b) of FIG. 2), the water in the mixed liquid 1 is evaporated at a high temperature, so that the small-molecule aqueous dye penetrated into the gap 42 of the molecular 41 of the cloth 4 The molecule 21 of 2 is firmly adhered to the gap 42 of the molecule 41 of the cloth 4 through the thickener 3 to avoid the weak bonding between the dye molecule 21 and the cloth molecule 41, which results in the lack of easy dye shedding and fading; The mixed liquid 1 on the surface of the cloth 4 is heated and dried, so that the molecules 21 of the small molecule water-based dye 2 on the surface of the cloth 4 are stably fixed on the surface of the cloth 4 through the thickener 3.

With the above, the cloth 4 to be dyed can be directly immersed in the mixed liquid 1 containing the small molecule water-based dye 2 and the thickener 3 under normal temperature conditions, and the cloth 4 to which the mixed liquid 1 has been adsorbed can be rolled. In order to allow the dye molecules 21 to sufficiently penetrate into the gaps 42 of the molecules 4 of the cloth 4 due to the rolling operation described above, the dye molecules 21 can be smoothly fixed without the need to warm the cloth 4 for a long time in the dye soaking or rolling operations. The binding between the cloth molecules 41 and the surface is more suitable for the application of fast and continuous dyeing of the cloth 4, which can improve the dyeing efficiency of the cloth and greatly reduce the energy consumption.

In addition, since the mixed liquid 1 on the cloth 4 has much less water content than the traditional cloth that has been continuously washed with water, and does not need to be washed with water after multiple dyeing, the time required for drying with the heater 6 is set. Significant shortening can greatly save the heating energy for drying, and it can also reduce the generation and discharge of dye wastewater and save water resources.

After the mixed liquid 1 of the small molecule water-based dye 2 and the thickener 3 is dried, the small molecule water-based dye 2 can be quickly and stably fixed between the molecules 41 and the surface of the cloth 4 through the thickener 3. Repeated washing with water to remove the dye remaining on the surface of the cloth, save water and dyes, reduce waste water pollution, will not cause environmental pollution, and then achieve the effect of energy conservation and carbon reduction; furthermore, as this case does not require the use of boilers to increase the temperature It can be soaked or washed several times and the dyeing tank can be shortened, and the drying time of the mixed liquid 1 on the cloth 4 can be shortened. Therefore, the space occupied by the equipment can be greatly reduced, thereby saving the cost of equipment and land.

In addition, the cloth dyed by the continuous dyeing method of the low-contamination cloth of the present invention includes a cloth 4 and a mixed liquid 1 that penetrates into the gaps 42 of the molecules 41 of the cloth 4 under normal temperature conditions. Liquid 1 consists of a small-molecule aqueous dye 2 whose molecular size is smaller or slightly larger than the gap 42 of the molecule 4 of the cloth 4 and a molecule 21 capable of adhering the small molecule aqueous dye 2 to the gap 42 of the molecule 41 of the cloth 4 The thickener 3 is mixed, which can just fix the small molecule aqueous dye 2 infiltrating into the gaps 42 of the molecules 41 of the cloth 4, and for the small molecule aqueous dye 2 attached to the surface of the cloth 4, the thickener 3 dries and is firmly fixed on the surface of the cloth 4 and does not easily fall off the cloth 4.

According to this, the above-mentioned effects of improving dyeing efficiency, power saving, energy saving, water saving, dye saving, space saving, equipment cost saving, and no air pollution can be achieved. In order to improve the above-mentioned traditional cloth dyeing technology, there are many shortcomings such as lengthy cloth dyeing time, inability to improve cloth dyeing efficiency, high energy consumption, serious environmental pollution, large space occupation, expensive equipment, and repeated use of dyes.

The present invention can be achieved by the following technical solutions according to the foregoing objectives:

An aqueous dye, which includes a colorant, a thickener, a leveling agent, a penetrant, and a softener. The colorant is any one or more of the following colorants: A-dispersed black; B-dispersed emerald blue; C-dispersed Yellow; D-dispersed red; E-dispersed yellow brown; F-dispersed ruby; G-dispersed navy blue; H-dispersed red and I-dispersed blue; the thickener is polypropylene amidamine and the leveling agent is anionic Surfactant 821; Examples of weight percentages of colorants, thickeners, leveling agents, penetrants, and softeners are: 2-8% colorants; 1.2-1.8% thickeners; 2-4% leveling agents; Penetrant 0.1-1%; softener 0.2-4%; the rest are water.

The A-dispersed black includes any one or more of the following CAS NO compounds: 12270-45-0; 52697-38-8; 15791-78-3.

The B-dispersed turquoise is a compound of CAS NO 12217-80-0; the C-dispersed yellow is a compound of CAS NO 12223-85-7; the D-dispersed scarlet is a compound of CAS NO 78564-87-1; E- Disperse yellow brown is a compound of CAS NO 12223-23-3; F-dispersed ruby is a compound of CAS NO 26850-12-4; G-dispersed navy is a compound of CAS NO 12239-34-8; H-dispersed red is CAS Compound of NO 17418-58-5; I-disperse blue is compound of CAS NO 12217-79-7.

The thickener is polyacrylamide with a molecular weight of 12 million to 20 million.

The penetrant is a sulfonic acid surfactant.

The softening agent is citrate for medical use.

An application of water-based dyes. The method of use is to add water-based dyes including dyes, thickeners, leveling agents, penetrants, and softeners to water together, stir 1-10H into the trough, and then press and heat the dyes. In contact with the fiber, the fiber moves at a rate of 20-70m / min; the compression pressure is 0.5-3 tons, and the heating temperature is 180-250 ° C.

The weight ratio of the aqueous dye to the fiber to be dyed is 20-30: 100.

The beneficial effects of the present invention:

In the present invention, a thickener and a surfactant are used together to further reduce the size of the dyeing molecules and improve the dyeing effect.

After a large number of experiments, the dyes were sublimed temporarily at a certain temperature, and the dyes and fibers were fixed under the bridging action of the thickener to complete the transient dyeing.

The water-based dye used in the present invention has good adhesion, and it is not necessary to wash the dyed cloth surface with the residual dye.

The present invention is further described below with reference to specific embodiments.

Example 1

An aqueous dye comprising a colorant, a thickener, a leveling agent, a penetrating agent, and a softener. The colorant is A-dispersed black; wherein A-dispersed black is 12270-45-0 of a CAS NO compound. The thickening agent is polypropylene ammonium with a molecular weight of 16 million, and the leveling agent is anionic surfactant 821; the proportion of dyeing agent, thickening agent, leveling agent, penetrating agent and softening agent is: 3%; Thickener 1.2%; leveling agent 2%; penetrant 0.4%; softener 0.4%; the rest is 93% water. The penetrant is a sulfonic acid surfactant. The softening agent is citrate for medical use.

Example 2

An aqueous dye comprising a dye, a thickener, a leveling agent, a penetrating agent, and a softening agent. The dye is A-dispersed black; A-dispersed black is 12270-45-0 and 52697-38 of the CAS NO compound. -8, the thickening agent is a polyacrylamide with a molecular weight of 16 million, and the leveling agent is anionic surfactant 821; the ratio of the dyeing agent, the thickening agent, the leveling agent, the penetrating agent and the softening agent is: dyeing Agent 5%; thickener 1.4%; leveling agent 3%; penetrant 0.2%; softener 0.3%; the rest is 90.1% water. The penetrant is a sulfonic acid surfactant, and the softener is a citrate for medical use.

Example 3

An aqueous dye comprising a colorant, a thickener, a leveling agent, a penetrant, and a softener, the colorant is A-dispersed black; A-dispersed black is 15791-78-3 and 52697-38 of CAS NO compounds -8, the mixing ratio is 1: 1; the thickener is polypropylene amide with a molecular weight of 16 million, and the leveling agent is anionic surfactant 821; the coloring agent, the thickener, the leveling agent, the penetrant and The proportion of the softener is: 6% of the dyeing agent; 1.6% of the thickening agent; 2% of the leveling agent; 0.2% of the penetrating agent; 0.2% of the softening agent; the remaining is 90% water. The penetrant is a sulfonic acid surfactant. The softening agent is citrate for medical use.

Example 4

An aqueous dye comprising a colorant, a thickener, a leveling agent, a penetrant, and a softener. The colorant is B-dispersed emerald blue, wherein the B-dispersed emerald blue is a compound of CAS NO 12217-80-0, The thickener is polypropylene ammonium with a molecular weight of 16 million, and the leveling agent is anionic surfactant 821; the proportion of the coloring agent, the thickening agent, the leveling agent, the penetrating agent and the softening agent is: 2% of the coloring agent Thickener 1.4%; leveling agent 2%; penetrant 0.2%; softener 0.4%; the rest is water. The penetrant is a sulfonic acid surfactant. The softening agent is citrate for medical use.

Example 5

An aqueous dye comprising a colorant, a thickener, a leveling agent, a penetrant, and a softener, the colorant is a C-dispersed yellow, and the C-dispersed yellow is a compound of CAS NO 12223-85-7; The thickener is polypropylene ammonium with a molecular weight of 16 million, and the leveling agent is anionic surfactant 821; the proportion of the dye, thickener, leveling agent, penetrant and softener is: 3% of the dye; thickening Agent 1.5%; leveling agent 3%; penetrant 0.5%; softener 1%; the rest is water. The penetrant is a sulfonic acid surfactant. The softening agent is citrate for medical use.

Example 6

An aqueous dye comprising a colorant, a thickener, a leveling agent, a penetrant, and a softener. The colorant is D-disperse scarlet, and D-disperse scarlet is a compound of CAS NO 78564-87-1. The thickener is polypropylene ammonium with a molecular weight of 16 million, and the leveling agent is anionic surfactant 821; the proportion of the dye, thickener, leveling agent, penetrant and softener is: 5% of the dye; thickening Agent 1.6%; leveling agent 2%; penetrant 0.6%; softener 0.2%; the rest is water. The penetrant is a sulfonic acid surfactant. The softening agent is citrate for medical use.

Example 7

An aqueous dye comprising a colorant, a thickener, a leveling agent, a penetrant, and a softener. The colorant is E-dispersed yellow brown, and E-dispersed yellow brown is a compound of CAS NO 12223-23-3; The thickener is polypropylene ammonium with a molecular weight of 16 million, and the leveling agent is anionic surfactant 821; the proportion of the coloring agent, the thickening agent, the leveling agent, the penetrating agent and the softening agent is: 6% of the coloring agent; Thickener 1.8%; leveling agent 3%; penetrant 0.6%; softener 0.4%; the rest is water. The penetrant is a sulfonic acid surfactant. The softening agent is citrate for medical use.

Example 8

An aqueous dye comprising a colorant, a thickener, a leveling agent, a penetrant, and a softener. The colorant is F-dispersed ruby, and F-dispersed ruby is a compound of CAS NO 26850-12-4. The thickener is polypropylene ammonium with a molecular weight of 16 million, and the leveling agent is anionic surfactant 821; the proportion of the dye, thickener, leveling agent, penetrant and softener is: 3% of the dye; thickening Agent 1.5%; leveling agent 3%; penetrant 0.6%; softener 0.4%; the rest is water. The penetrant is a sulfonic acid surfactant. The softening agent is citrate for medical use.

Example 9

An aqueous dye comprising a colorant, a thickener, a leveling agent, a penetrant, and a softener. The colorant is G-dispersed navy blue, and G-dispersed navy blue is a compound of CAS NO 12239-34-8. The thickener is polypropylene ammonium with a molecular weight of 16 million, and the leveling agent is anionic surfactant 821; the proportion of the coloring agent, thickener, leveling agent, penetrant and softener is: 6% of the coloring agent; thickening Agent 1.8%; leveling agent 3%; penetrant 0.6%; softener 0.4%; the rest is water. The penetrant is a sulfonic acid surfactant. The softening agent is citrate for medical use.

Example 10

An aqueous dye comprising a colorant, a thickener, a leveling agent, a penetrant, and a softener, the colorant is H-disperse red, and H-disperse red is a compound of CAS NO 17418-58-5; The thickener is polypropylene ammonium with a molecular weight of 16 million, and the leveling agent is anionic surfactant 821; the proportion of the coloring agent, thickener, leveling agent, penetrant and softener is: 6% of the coloring agent; thickening Agent 1.8%; leveling agent 3%; penetrant 0.6%; softener 0.4%; the rest is water. The penetrant is a sulfonic acid surfactant. The softening agent is citrate for medical use.

Example 11

An aqueous dye comprising a colorant, a thickener, a leveling agent, a penetrating agent, and a softener. The colorant is I-disperse blue, and I-disperse blue is a compound of CAS NO 12217-79-7. The thickener is polypropylene ammonium with a molecular weight of 16 million, and the leveling agent is anionic surfactant 821; the proportion of the coloring agent, thickener, leveling agent, penetrant and softener is: 6% of the coloring agent; thickening Agent 1.8%; leveling agent 3%; penetrant 0.6%; softener 0.4%; the rest is water. The penetrant is a sulfonic acid surfactant. The softening agent is citrate for medical use.

The method of use is: the water-based dyes obtained in Examples 1, 2, 3, 4, 5, 6, 7, 7, 8, 9, 10, 11 include dyes, thickeners, leveling agents, penetrants, and softeners, respectively. The agent is added to water, stirred for 1-10H and placed in the hopper, and then the dye is in contact with the fibers while being heated under pressure. The speed of fiber movement is 20-70m / min; the pressure is 0.5-3 tons, and the heating temperature is 180-250. ℃. The weight ratio of the aqueous dye to the fiber to be dyed is 20-30: 100. Dyeing is complete.

Compared with the prior art, the present invention has the following advantages:

1. It is not necessary to use high temperature and high pressure environment to enlarge the gap 42 of the molecules 41 of the fiber 4 in the dyeing, only the cloth 4 must be stained with the mixed liquid 1, and then the pressure dye 2 molecules 21 can enter the gap 42 of the molecules 4 of the cloth. Therefore, it is very time-saving, greatly improves the speed of dyeing and finishing, and accelerates the output value.

2. It is not necessary to use boiler steam to heat and fix the color during dyeing, and it does not need to consume boiler energy. Therefore, there is no air pollution and industrial risks caused by the boiler, and no dyeing cylinder is needed, which can greatly save equipment occupation space and equipment cost.

3. The dyed cloth 4 does not need to wash the residual material with water. The dye can be completely fixed on the cloth, saving water and dyes, and greatly reducing the discharge of waste water. Therefore, the washing process is not necessary, and the dye can be used repeatedly. When adding dyes No tank washing is needed, which overcomes the problem of easy water pollution in traditional dyeing plants.

4.During the dyeing process, there is no need to add high pressure and high temperature steam to improve the dyeing efficiency, and it is not necessary to apply multiple washings. Therefore, the moisture content of the dyed fabric 4 is much less than that of traditional washed fabrics. 4 The drying and setting time can be greatly shortened, and the specifications of the baking equipment can be shortened, which can greatly save the electricity and land cost of the baking equipment.

5.Because there is no need to use boilers, dyeing tanks and washing tanks, and the baking equipment is smaller than the traditional dyeing baking equipment, the dyeing, rolling and baking setting equipment can be integrated into one. Limitation, so its efficiency is equivalent to that of traditional equipment plus multiple dyeing tanks and a traditional baking equipment, short process, high dyeing efficiency, and easy operation.

6. Since the dye does not need to be heated and pressurized during dyeing, and the remaining dye after dyeing does not need to go through the water washing process, the residual dye can be recycled and reused. In addition to eliminating the pollution caused by washing the residual dye after conventional dyeing, it can also save a lot of money. Dye cost.

In summary, it is only a preferred embodiment of the present invention, and is not intended to limit the present invention. All other equivalent modifications or substitutions made without departing from the spirit disclosed by the present invention shall be included in the patent application described below. Within range.

1‧‧‧ mixed liquid

2, 2a‧‧‧ dye

21, 41, 21a, 41a ‧‧‧ molecules

3‧‧‧ Thickener

4, 4a‧‧‧ Cloth

42, 42a‧‧‧ Clearance

5, 5a‧‧‧ roller

50‧‧‧roller

6, 6a‧‧‧heater

60a‧‧‧Water washing

Figures 1a to 1c are schematic diagrams of the traditional cloth dyeing process.

Figures 2a to 2b are schematic diagrams of the method flow of the present invention.

Fig. 3 is a flow block diagram of Figs. 2a to 2b.

Claims (15)

A low-contamination water-based dye, characterized in that it includes a colorant, a thickener, a leveling agent, a penetrant, and a softener. The colorants are: A-dispersed black; B-dispersed emerald blue; C-dispersed yellow; D-dispersed scarlet; E-dispersed yellow-brown; F-dispersed ruby; G-dispersed navy blue; at least one of H-dispersed red and I-dispersed blue and the color mixture; and the thickener is polypropylene. Amine, leveling agent is anionic surfactant 821; the ratio of dyeing agent, thickener, leveling agent, penetrant and softener is: 2-8% of dyeing agent; 1.2-1.8% of thickening agent; leveling agent Agent 2-4%; penetrant 0.1-1%; softener 0.2-4%; the rest is water. The water-based dye according to item 1 of the scope of patent application, wherein the A-dispersed black includes at least one of the following CAS NO compounds and a mixture thereof: 12270-45-0; 52697-38-8; 15791-78 -3. The water-based dye according to item 1 of the scope of the patent application, wherein the B-dispersed emerald blue is a compound of CAS NO 12217-80-0; the C-dispersed yellow is a compound of CAS NO 12223-85-7; D-dispersed scarlet is a compound of CAS NO 78564-87-1; E-dispersed yellow brown is a compound of CAS NO 12223-23-3; F-dispersed ruby is a compound of CAS NO 26850-12-4; G-dispersed navy Is a compound of CAS NO 12239-34-8; H-disperse red is a compound of CAS NO 17418-58-5; I-disperse blue is a compound of CAS NO 12217-79-7. The water-based dye according to item 1 or 2 or 3 of the scope of the patent application, wherein the thickener is polypropylene ammonium with a molecular weight of 12 million to 20 million. The water-based dye according to item 1 or 2 or 3 of the patent application scope, wherein the penetrant is a sulfonic acid surfactant. The water-based dye according to item 1 or 2 or 3 of the scope of patent application, wherein the softener is a citrate for medical use. A method for continuous dyeing of low-contamination cloth, comprising: step (1): immersing a cloth in a mixed solution containing a low-contamination water-based dye described in claims 1 to 3 of the patent application scope under normal temperature conditions, The mixed liquid is formed by mixing a small molecular water dye with a thickener, so that the molecules of the small molecular water dye in the mixed liquid adhere to the cloth through the adhesion of the thickener, and the small molecular water dye molecules The size is smaller than or equal to the molecular gap of the cloth; step (b): rolling the cloth with dye formed in the previous step under normal temperature conditions to allow at least part of the mixed solution to penetrate into the molecular gap of the cloth; And step (3): the cloth infiltrated with the mixed liquid formed in the previous step is then heated and dried, so that the molecules of the small-molecular water-based dye are stably fixed by the dried thickener Intermolecular and surface of cloth. The continuous dyeing method for low-contamination cloth as described in item 7 of the scope of patent application, wherein the small molecule water-based dye is a disperse nano-sublimable dye. The continuous dyeing method for low-contamination cloth as described in item 7 of the scope of the patent application, wherein the thickener is nonionic polypropylene amidamine. The continuous dyeing method for low-contamination cloth as described in item 7 of the scope of patent application, wherein the mixed liquid is contained in a material tank, and the cloth is immersed in the mixed liquid of the material tank. The continuous dyeing method for low-contamination cloth as described in item 7 of the scope of the patent application, wherein the rolling of the cloth is performed by roller pressurization. The continuous dyeing method for low-contamination cloth as described in the patent application No. 8 wherein the rolling of the cloth is operated by roller pressurization. A cloth specifically dyed by the continuous dyeing method for cloth described in item 7 of the scope of application for a patent, comprising a cloth, the cloth having a molecular gap and a surface fixed with the mixed liquid, the mixed liquid having a molecular size less than or equal to The small molecular water-based dye of the cloth molecular gap and a thickener which can fix the small molecular water-based dye in the molecular space of the cloth and its surface are mixed, and the molecules of the small molecular water-based dye are thickened by the thickener The agent is firmly fixed on the surface of the cloth and its molecular gap without falling off. The continuous dyeing method for low-contamination cloth as described in item 8 of the scope of the patent application, which includes a cloth, the molecular gap and the surface of the cloth are fixed with the mixed liquid, and the mixed liquid is composed of a molecule having a molecular size smaller than or equal to the molecular gap of the cloth A small molecule water dye and a thickener which can be used to fix the small molecule water dye in the interstices of the cloth molecules and a thickener on the surface thereof. The molecules of the small molecule water dye are stably fixed by the thickener without falling off. Settled on the surface of the cloth and its molecular gap. The continuous dyeing method for low-contamination cloth as described in item 9 of the scope of the patent application, including a cloth, the cloth having a molecular gap and a surface fixed with the mixed liquid, the mixed liquid having a molecular size smaller than or equal to the molecular gap of the cloth A small molecule water dye and a thickener which can be used to fix the small molecule water dye in the interstices of the cloth molecules and a thickener on the surface thereof. The molecules of the small molecule water dye are stably fixed by the thickener without falling off. Settled on the surface of the cloth and its molecular gap.