CN103396679B - Compound cationic dye composition - Google Patents

Abstract

The present invention relates to a composite cationic dye composition, in particular to a composite cationic dye composition with high dye uptake, high light fastness and washing fastness, the purpose is to solve the gap between cationic dyes and fibers in the prior art Due to the disadvantages of small molecular attraction, obvious drop of dyeing of cationic dyes, and low washing fastness, the composite cationic dye composition is composed of the following components by weight percentage: 10-40% cationic blue X as shown in formula (1) -GRRL, 5~30% cationic red shown in formula (2), 10~20% cationic yellow shown in formula (3), 1~10% cationic red shown in formula (4), the balance as an auxiliary agent. The composite cationic dye composition of the invention has reasonable compatibility, great molecular attraction with fibers and high dye uptake rate, and the cationic dye is not easy to detach from the fiber after the dyed cloth is washed.

Description

A kind of composite cationic dye composition

technical field

The invention relates to a composite cationic dye composition, in particular to a composite cationic dye composition with high dye uptake, high light fastness and washing fastness.

Background technique

Cationic dyes are a kind of textile dyes, also known as basic dyes and salt-based dyes, which are in a cationic state when dissolved in water. They are mainly used for dyeing acrylic fibers, and can also be combined with protein molecules with salt and alkali. Cationic dyes It is soluble in water and ionized in aqueous solution to generate positively charged colored ions. The cation of the dye can combine with the acidic group of the third monomer in the fabric to dye the fiber. It is a special dye for acrylic fiber dyeing. It has It has the advantages of high strength, bright color and good light fastness.

With the recent rapid development of polyester fibers, superfine fibers and superfine denier fibers have appeared. Due to their extremely small linear density and high specific surface area, their fabrics have high coverage, soft hand feeling and comfortable wearing. It is a hot textile raw material used by textile enterprises at home and abroad to develop high-grade textiles. Although the cationic dyes in the prior art can be dyed, the molecular attraction between the cationic dye and the fiber is small, resulting in a significant decline in the dye uptake rate of the cationic dye, and the fastness of all aspects of the dyed cloth is reduced to varying degrees, especially It has the most obvious impact on the washing fastness. After the fabric is washed, a large amount of cationic dyes are separated from the fibers. On the one hand, the quality of the fiber product is seriously affected. In addition, the utilization rate of cationic dyes is reduced, and the cost of sewage treatment after washing the fabric is significant. Increase, increase the production cost of the enterprise.

At present, some composite cationic dyes on the market are mixed with two to three kinds of cationic dyes. The compatibility between the dyes is quite different. Difference, dyes with high affinity compete for more dyeing seats, more dyes are adsorbed, the concentration difference with the inside of the fiber is larger, the diffusion is faster, and the dyeing speed is faster, dyes with low affinity compete for less dyeing seats, and the dye adsorption is less , the concentration with the interior is small, and the dyeing is slow, so the dyeing rate of various dyes is very different, and it is easy to produce color flowers. Therefore, it is urgent to select several cationic dyes with good compatibility and excellent dyeing performance for compounding, and to use the principle of compounding synergy to obtain compound cationic dyes with high dye uptake, high light fastness and washing fastness.

Contents of the invention

The purpose of the present invention is to solve the disadvantages of the prior art that the molecular attraction between the cationic dye and the fiber is small, the dye uptake of the cationic dye is obviously decreased, and the washing fastness is low, and a kind of high dye uptake, high light fastness and washing fastness is provided. The composite cationic dye composition with high fastness, the composite cationic dye composition is reasonable in compatibility, the molecular attraction between fibers and fibers is high, and the dye uptake rate is high. After dyeing, the fabric is washed with water, and the cationic dye is not easy to detach from the fiber.

The technical scheme that the present invention solves its technical problem adopts is:

A composite cationic dye composition, composed of the following components by weight percentage:

10~40% cationic blue X-GRRL shown in formula (1):

(1)

5~30% cationic red as shown in formula (2):

(2)

10~20% cationic yellow as shown in formula (3):

(3)

1~10% cationic red as shown in formula (4):

(4)

The balance is additives.

As a preference, a compound cationic dye composition is composed of the following components by weight percentage: it is composed of the following components by weight percentage: 20~25% cationic blue as shown in formula (1), 10~20% such as Cationic red shown in formula (2), 12-18% cationic yellow shown in formula (3), 3-6% red dye shown in formula (4), and the balance is additives.

Preferably, the auxiliary agent is one or a mixture of sodium glutamate, dextrin or oxalic acid.

Composite cationic dye composition of the present invention is prepared by following method:

Mix the cationic blue shown in the formula (1), the cationic red shown in the formula (2), the cationic yellow shown in the formula (3) and the red dye shown in the formula (4). The ball ink is pulverized under the presence of agent, water and surfactant, and then spray-dried to obtain a composite cationic dye composition, and the ratio of each component can be adjusted to obtain a series of dyes of the composite cationic dye composition with different colors.

The cationic blue X-GRRL represented by the formula (1) provided by the invention is a semicyanine type monoazo structure structurally, and has excellent light fastness on acrylic fiber. At present, there are many varieties of such products produced at home and abroad. Such as C.I. Basic Red 46 (C.I.110825), C.I. Basic Blue 41 (C.I.11105/11154), the domestic product names are Cationic Red X-GRL and Cationic Blue X-GRRL respectively. This type of dye is mainly used for acrylic fiber textile dyeing and direct printing, with excellent leveling performance and light fastness.

The cationic red represented by the formula (2) provided by the present invention is structurally a cationic dye of a triazole series monoazo structure. This structural dye not only has the characteristics of high color strength and good level dyeing, but also has particularly high level dyeing and light fastness for polyester dyeing, and is one of the special dyes for polyester fiber dyeing.

The cationic yellow represented by the formula (3) provided by the present invention is structurally a di-ium ion-isolated cationic dye with an anthraquinone structure. The anthraquinone structure has the advantages of bright color, high heat stability, excellent light fastness and can be used as a super light-fast dye. At the same time, the dye itself is an isolated cationic dye, which has higher light and heat fastness than conjugated cationic dyes.

The cationic red represented by the formula (4) provided by the present invention is structurally a migratory cationic dye, which has a simple molecular structure, small molecular weight, and good diffusion and level dyeing properties.

Detailed ways

The technical solution of the present invention will be further specifically described below through specific examples.

Embodiment 1~4:

A compound cationic dye composition, which is composed of cationic blue shown in formula (1), cationic red shown in formula (2), cationic yellow shown in formula (3) and red dye shown in formula (4) , the balance is an auxiliary agent, and the weight percentage of each component is as shown in Table 1;

Mix and mix the components according to the ratio shown in Table 1, then add additives and water, pulverize the spheroidal ink in the presence of surfactants, and then spray dry to obtain the composite cationic dye composition of the present invention.

Among them: the cationic blue X-GRRL shown in the formula (1) is the cationic blue produced by Hangzhou Jingjiang Ruihua Technology Co., Ltd.; the cationic red shown in the formula (2) is the cationic red X-GRL R46 produced by Hangzhou Jingjiang Ruihua Technology Co., Ltd. The cationic yellow shown in the formula (3) is selected from the cationic yellow X-GL Y28 produced by Hangzhou Jingjiang Ruihua Technology Co., Ltd.; the cationic red shown in the formula (4) is selected from the cationic red produced by Hangzhou Jingjiang Ruihua Technology Co., Ltd. Agents and surfactants are selected from commercially available conventional raw materials.

The percentage content of each component of the compound cationic dye composition of table 1

The composite cationic dye of the high washing fastness that embodiment 1～4 makes is carried out performance test, and test method is as follows:

Respectively get the composite cationic dyestuff of the high washing fastness that 1.0g embodiment 1-4 makes, water is mixed with respectively the composite cationic dye suspension that concentration is the high washing fastness of 1.0g/L, gets aforementioned suspension 20ml and 80ml mixed with water, adjusted the pH value of the dyeing bath to 4.5 with acetic acid, then raised the temperature to 60°C, and added 2.0g of microfibers for high-temperature and high-pressure dyeing at the same time, raised the temperature to 130°C within 35 minutes, kept the temperature for 50 minutes, and cooled to 80°C for sampling.

Observe the shade of the cloth sample and measure its color fastness using GB/T2397-2003, GB/T9337-2001, GB/T3921-1997, GB/T3920-1997, GB/T5718-1997, and use the existing cationic dyes as a comparison example , the measurement results are shown in Table 2:

Table 2 The test results of the composite cationic dyes of the high washing fastness of embodiment 1～4 (unit: level)

Example lifting force Color rate Washing fastness Light fastness Heat fastness (180°C) comparative example C 68% 3 3-4 3-4 Example 1 A 82% 5 5 4-5 Example 2 A 87% 5 5 4-5 Example 3 A 90% 5 5 4-5 Example 4 A 85% 5 5 4-5

Shown by table 2, composite cationic dye composition of the present invention is used for the dyeing of polyester fiber, and the molecular attraction between composite cationic dye composite and fiber is big, and dye uptake rate is high, and cloth after dyeing is washed with water, and cationic dyestuff is difficult for breaking away from fiber The lifting power, coloring rate, washing fastness, light fastness and heat fastness level of the cloth sample after using the composite cationic dye composition of the present invention are compared with the lifting power of the cloth sample using the cationic dye of the prior art, The grades of coloring rate, washing fastness, light fastness and heat fastness are significantly improved, therefore, the present invention has outstanding substantive features and remarkable progress.

The embodiment described above is only a preferred solution of the present invention, and does not limit the present invention in any form. There are other variations and modifications on the premise of not exceeding the technical solution described in the claims.

Claims (3)

1. A composite cationic dye composition for polyester fibers, characterized in that: by weight percentage by the following components: 10-40% cationic blue X-GRRL as shown in formula (1): 10-30% cationic red as shown in formula (2): 10-20% cationic yellow as shown in formula (3): 1～10% cationic red as shown in formula (4): The balance is additives. 2. A kind of composite cationic dye composition for polyester fiber according to claim 1, is characterized in that: by weight percentage is made up of following component: 20～25% cationic blue as shown in formula (1) X-GRRL, 10-20% cationic red as shown in formula (2), 12-18% cationic yellow as shown in formula (3), 3-6% cationic red as shown in formula (4), and the rest The amount is an auxiliary agent. 3. according to claim 1 and 2 described a kind of composite cationic dye composition for the high washing fastness of polyester fiber, it is characterized in that: described auxiliary agent is sodium naphthalene, dextrin or oxalic acid One or a mixture of several.