WO2019156378A1 - High-fastness disperse dye composition and method for dyeing fibers by using same - Google Patents

Abstract

The present invention relates to a disperse dye composition comprising 1-99 parts by weight of a compound of chemical formula 1 below and 1-99 parts by weight of a compound of chemical formula 2 below, and to a method for dyeing semi-synthetic fibers, synthetic fibers, regenerated fibers, or mixed fibers of synthetic fibers and natural fibers, by using the disperse dye composition. The disperse dye composition according to the present invention comprises a combination of specific compounds, and thus the disperse dye composition shows an excellent dye adsorption rate when dyeing a mixed fiber material including polyester or the like, has excellent allround fastness, such as sunlight fastness, water fastness, and sublimation fastness, and enables the expression of high-density colors. [Chemical formula 1] [Chemical formula 2] In chemical formula 2, R₁ is a hydrogen atom or (C1-C18)alkyl; R₂ is (C1-C18)alkyl or -(CH₂)_n-CO₂R_a; n is an integer of 1 to 8; and R_a is (C1-C18)alkyl or (C1-C8)alkoxy(C1-C8)alkyl.

Description

High fastness disperse dye composition and dyeing method of fibers using the same

This application claims the benefit of priority based on Korean Patent Application No. 10-2018-0015697, filed Feb. 8, 2018, and all contents disclosed in the documents of that Korean Patent Application are incorporated as part of this specification.

The present invention relates to a disperse dye composition and a method of dyeing fibers using the same, and more particularly, to a composition and a method of disperse dyes having excellent fastnesses such as daylight, water, and sublimation in dyeing polyester fibers.

Synthetic fibers such as acetate and polyester have a very high hydrophobicity as compared with conventional cellulose and protein fibers, making it very difficult to be dyed with conventional hydrophilic dyes. The dyeing of such hydrophobic fibers does not contain water-soluble groups, and has been used as a disperse dye which is dispersed in water as a dye insoluble in water.

However, the disperse dyes cannot sufficiently realize excellent dyeing rate and high daylight fastness in view of their properties, and furthermore, the affinity of polyester to blended fibers and the like is not clear.

Thus, in order to improve color fastness and dyeing rate as well as washing fastness, attempts have been made to mix the disperse dye compositions, but dyes of various colors having desired color developing properties, etc., while exhibiting excellent fastness and dyeing rate, have not been developed.

Accordingly, the inventors, after extensive research and various experiments, described a method of dyeing a blended fiber material including polyester using a disperse dye composition containing a combination of specific compounds as described below. It has been developed, and in this case, it has been found that excellent dyeing rate and fastness can be obtained, and the present invention has been completed.

The problem to be solved by the present invention is to provide a disperse dye composition having excellent fastness by mixing disperse dyes in an appropriate ratio.

In addition, another problem to be solved by the present invention is to provide a method for dyeing a blend fiber material containing a polyester or the like using the disperse dye composition, in this case, it is possible to obtain excellent fastness compared to the conventional dye have.

The present invention provides a dispersion dye composition comprising 1 to 99 parts by weight of the compound of Formula 1 and 1 to 99 parts by weight of the compound of Formula 2 to achieve the above object.

 [Formula 1]

[Formula 2]

In Formula 2, R ₁ is a hydrogen atom or (C1-C18) alkyl, R ₂ is (C1-C18) alkyl or-(CH ₂ ) _n -CO ₂ R _a , n is an integer of 1 to 8 , R _a is (C1-C18) alkyl or (C1-C8) alkoxy (C1-C8) alkyl.

When the compounds selected from the group consisting of Formula 1 and Formula 2 are mixed, it is possible to prepare a dispersion dye composition having a light fastness, sublimation fastness, water fastness and the like than the conventional dye composition.

The disperse dye composition of the red series prepared with the compound of Formula 1 had a problem that it is difficult to express a dark color due to the dyeing concentration, the disperse fastness of the red series disperse dye prepared with the compound of Formula 2 was poor.

Thus, the dispersion dye composition according to the present invention can obtain a high dyeing concentration and excellent daylight fastness and sublimation fastness, water fastness grade of the level to be obtained through the combination of the compounds of formula 1 and 2 in a specific content.

In one embodiment of the present invention, in the compound of Formula 2, R ₁ is (C1-C8) alkyl, R ₂ is (C1-C8) alkyl, n is an integer of 1 to 3, R _a is (C1 ~ C8) alkyl or (C1-C4) alkoxy (C1-C4) alkyl.

In one embodiment of the present invention, the disperse dye composition may include 20 to 80 parts by weight of the compound of Formula 1 and 80 to 20 parts by weight of the compound of Formula 2.

Other components, such as a solubilizer, a buffer, an antifreezing agent, can be added to the composition of this invention within the range which does not impair the objective and effect of this invention. Such other additives may be added in the range of approximately 1 to 20 weight percent based on the total weight of the composition.

The solubilizer is an additive component that prevents agglomeration of dyes and helps dissolution, and typical examples thereof include urea, thiourea, and caprolactam. The buffer is a component that buffers the pH to prevent degradation of the dye during storage and storage, and representative examples thereof include sodium phosphate, potassium phosphate, sodium acetate and the like. The freezing inhibitor lowers the freezing point during liquid freezing and serves as a component that does not freeze the liquid dye. Representative examples include ethylene glycol, polyethylene glycol, and polyalcohol compounds.

The present invention also provides a method for dyeing a fiber material using the dispersion dye composition.

Examples of the fibrous material include semisynthetic fibers, synthetic fibers, regenerated fibers, or blended fibers of synthetic fibers and natural fibers. Examples of such semisynthetic fibers include, for example, acetate, synthetic fibers such as polyester, polyamide, poly Vinyl, polyurethane-based fibers, recycled fibers include cellulose and the like.

The disperse dye composition is also applied to the dyeing of blended fibers of polyester fibers, for example blended fibers comprising polyester and cellulose fibers, and exhibits high dyeing rates and good fastnesses.

In one aspect of the present invention, a method for dyeing a semi-synthetic fiber, synthetic fibers, regenerated fibers, or blended fibers of synthetic fibers and natural fibers using the dispersion dye composition is provided.

In one aspect of the present invention, using the dispersion dye composition, there is provided a method for dyeing polyester fiber or polyester composite fiber.

In one aspect of the present invention, the blend fiber may include polyester fibers and cellulose fibers.

The disperse dye composition according to the present invention can be used in various methods, for example, cold pad placement method, continuous dyeing method, dyeing method, printing method, printing method, and preferably used in continuous dyeing method and dyeing method.

In particular, as the continuous dyeing method, an acid-binding agent (for example, sodium carbonate, sodium bicarbonate, etc.) is mixed with a padding liquid, padded by a known method and dyed by dry heat or steaming, and after the dye padding inorganic Neutral salts (e.g., anhydrous sodium sulfate, salt, etc.) and acid binders (e.g., caustic soda, sodium silicate, etc.) are mixed and padded in the padding solution, and the bathing padding is dyed by dry heat or steaming by a known method. Law can be used.

The dyeings and printings obtained according to the present invention are excellent in build-up and leveling. In addition, it is excellent in coloration, high fiber-dye bonding stability, and excellent in light fastness as well as prevention of contamination to other fibers.

Since the disperse dye composition according to the present invention includes a combination of specific compounds, it exhibits excellent dyeing rate when dyeing blended fiber materials including polyester and the like, and has excellent fastness such as sunlight, water, and sublimation.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

Preparation Example 1 Preparation of Disperse Dye Composition Containing Compound of Formula 1

Using a compound of water and a dispersant to the compound of the formula (1), the pH is adjusted after milling to a particle size of 1㎛ or less 90% or more. Thereafter, spray dry drying to obtain a dispersion dye composition comprising a compound of formula (1).

[Formula 1]

Preparation Example 2 Preparation of Disperse Dye Composition Containing Compound of Formula 3

Using the same method as in Preparation Example 1 to the compound of formula 3 to obtain a disperse dye composition comprising a compound of formula (3).

[Formula 3]

Preparation Example 3 Preparation of Disperse Dye Composition Containing Compound of Formula 4

Using the same method as Preparation Example 1 to the compound of formula 4 to obtain a disperse dye composition comprising a compound of formula (4).

[Formula 4]

Preparation Example 4 Preparation of Disperse Dye Composition Containing Compound of Formula 5

Using the same method as Preparation Example 1 to the compound of formula 5 to obtain a disperse dye composition comprising a compound of formula (5).

[Formula 5]

Comparative Example 1

Disperse dye composition comprising the composition of Preparation Example 2 was prepared as shown in Table 1.

 [Examples 1-3]

Disperse dye compositions comprising the composition of Preparation Example 1, and the composition selected from the compositions of Preparation Examples 2 to 4 were prepared as shown in Table 1.

[Dyeing and Fastness Evaluation of Dispersant Composition]

In a liquid containing 100 g of polyester, 1 g of the disperse dye composition of Examples 1 to 3 and Comparative Examples 1 to 4 and 0.5 g / l of a leveling agent, adjusted to pH 4.0 to pH 5.0 by 80% acetic acid at room temperature. Immerse in 1:10 liquid ratio. The dyeing is performed at 60 ° C. at a rate of 3 ° C./min and then to 130 ° C. at a rate of 1 to 2 ° C./min for 60 minutes. The salt solution is then cooled to 80 ° C., washed with dyed polyester fabric and then 70-80 ° C. for 20 minutes in a bath containing 4 ml / l of 36% sodium hydroxide solution and 4 g / l sodium hydrogen sulfate solution. Cleans under reduced temperature. The processed dyeings are then washed with water and dried.

Daylight fastness was carried out by AATCC 16E method, water fastness was progressed by ISO-105-E01, and sublimation fastness by ISO-105-P01.

The results of the evaluation of dyeing rate and fastness at the same concentration are shown in Table 2 below.

As shown in Table 2, when dyeing the polyester using the disperse dye composition of Examples 1 to 3 mixed with the compounds of Preparation Examples 1 to 4, the salt than the case of using the disperse dye composition of Comparative Example 1 Indicative coverage.

Moreover, when dyeing polyester using the composition of Examples 1-3, it can be confirmed that it has the outstanding daylight, sublimation, and water fastness compared with the case of using the dispersion dye composition of the comparative example 1.

As described above in detail specific parts of the present invention, it is apparent to those skilled in the art that such specific descriptions are merely preferred embodiments, and thus the scope of the present invention is not limited thereto. something to do. Thus, the substantial scope of the present invention will be defined by the appended claims and their equivalents.

Claims (5)

1. 1 to 99 parts by weight of a compound of Formula 1 and 1 to 99 parts by weight of a compound of Formula 2

   [Formula 1]

   

   [Formula 2]

   

   In Chemical Formula 2,

   R ₁ is a hydrogen atom or (C ₁ -C 18) alkyl,

   R ₂ is (C 1 -C 18) alkyl or-(CH ₂ ) _n -CO ₂ R _a ,

   n is an integer from 1 to 8,

   R _a is (C 1 -C 18) alkyl or (C 1 -C 8) alkoxy (C 1 -C 8) alkyl.
2. The compound of claim 1, wherein in the compound of Formula 2, R ₁ is (C1-C8) alkyl, R ₂ is (C1-C8) alkyl, n is an integer of 1 to 3, R _a is (C1-C8) It is an alkyl or (C1-C4) alkoxy (C1-C4) alkyl, Disperse dye composition.
3. According to claim 1, Dispersed dye composition comprising 20 to 80 parts by weight of the compound of Formula 1 and 80 to 20 parts by weight of the compound of Formula 2.
4. A method of dyeing semisynthetic fibers, synthetic fibers, regenerated fibers, or blended fibers of synthetic fibers and natural fibers using the dispersion dye composition according to claim 1.
5. The method of claim 4 wherein the blended fiber comprises polyester fiber and cellulose fiber.