JPH0570708A - Dye composition and method for dyeing hydrophobic fiber using the same - Google Patents

Abstract

PURPOSE:To obtain a black dyed article having excellent dischargeability and excellent fastness especially to water by dyeing a hydrophobic fiber with a disperse dye composition obtained by blending three or more specific dyes. CONSTITUTION:10-80wt.% one or more dyes represented by formula 1 (wherein X is Cl, methyl, or acetylamino group, Y is H or methoxy group, and R1 and R2 each is a 1-4C alkyl which may be branched) are blended with 1-30wt.% the dye of formula 2 and 20-80wt.% the dye of formula 3. Thereto is added an anionic dispersant, a nonionic dispersant, or a mixture thereof. The resulting mixture is sufficiently wet-ground in the presence of a small amount of water by means of a grinder such as a ball mill. Although any of various known dyeing techniques can be used for dyeing hydrophobic fibers, particularly a polyester fiber, the discharge method is preferable. In this method, a cloth is dyed by, e.g., dip dyeing, and the ground-dyed cloth is printed with a sizing material containing a discharging agent, e.g., stannous chloride, and is then subjected to, e.g., high-pressure steaming to conduct discharging.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a dye composition and a dyeing method using the same. More specifically, it relates to a water-insoluble disperse dye composition containing a specific dye and a method for dyeing hydrophobic fibers using the same.

[0002]

2. Description of the Related Art In dyeing a hydrophobic fiber, especially a polyester fiber, in order to increase the added value of the dyed product,
Dyeing processing by the discharge-preventing dyeing method, which can obtain a complicated pattern, is widely performed. In dyeing by this preventive discharge method,
It is necessary to use a dye that is easily decomposed into a colorless substance by a discharge preventive agent such as tin chloride, or that changes into a chemical structure such that it no longer exhibits dyeing properties on fibers. Of course, dyed fabrics that have been subjected to such a dyeing process also require fastness equivalent to that of ordinary dyed fabrics (for example, dyed fabrics dyed by the dip dyeing method), but dyes with excellent discharge-proof properties are generally fast. Dyes that are weak in color and have excellent fastness generally tend to have poor discharge prevention. For this reason, there is a strong demand in the market for dyes having excellent discharge-proof properties and fastness.

[0003]

A disperse dye for obtaining a black dyeing object is usually prepared by mixing a large number of dyes, but it is necessary to balance the discharge preventive property and the fastness of each dye to be used. However, few products currently used in the market can sufficiently meet these two requirements. Thus, it is desired to develop a disperse dye composition for black which is excellent in discharge-proofing property and fastness property.

[0004]

Means for Solving the Problems As a result of intensive studies to solve the above-mentioned problems, the inventors of the present invention have achieved the above-mentioned problems by blending a disperse dye having a specific structure for dyeing. The inventors have completed the present invention by finding out the solution. That is, the present invention uses the formula (1)

[0005]

[Chemical 4]

(In the formula (1), X is chlorine, methyl group or acetylamino group, Y is hydrogen atom or methoxy group, R is
₁ and R ₂ each represent a lower alkyl group having 1 to 4 carbon atoms which may be branched. ) Dyes 10 to 80
% By weight, formula (2)

[0007]

[Chemical 5]

1 to 30% by weight of a dye represented by the formula (3)

[0009]

[Chemical 6]

Disclosed are a disperse dye composition in which 20 to 80% by weight of a dye represented by the formula (1) are blended, and a method for dyeing a hydrophobic fiber using the disperse dye composition.

The dye composition and the dyeing method of the present invention will be described in detail. Among the disperse dyes for polyester fiber, the black disperse dye (the dye for obtaining a black dyed product) is usually yellow,
Obtained by multi-component blending of red, blue and green dyes. Therefore, it is well known that being excellent as a black disperse dye is important not only in terms of various properties of each component dye itself, but also in balance in their dyeing speed and fastness. The object of the present invention is, in addition to the properties specific to each of the components constituting the compounding component, the dyes of each component in the dischargeability can be removed in a well-balanced manner, that is, the so-called out-of-balance.
It is to develop a dye composition for black.

The discharge-proofing treatment, which is widely performed to increase the added value of dyed products, is performed by printing a stain-proofing paste mixed with a discharge-proofing agent such as tin chloride or processed tin chloride on a cloth. After preventing dyeing on that part, dyeing is carried out by ground dyeing to show a pattern, and cloth dyeing cloth that has been dyed in advance is printed with a discharge paste containing a discharge agent. It is distinguished from the discharge printing method in which the dye is solubilized or has a colorless chemical structure to show a pattern.

The black disperse dye for discharge prevention, which has been demanded from the market, must satisfy the above-mentioned various conditions, which is very difficult. When the dyes containing the dyes represented by the formulas (1) to (3) according to the present invention are blended in specific composition ratios, respectively, the dyes have extremely excellent discharge-proof property (having uniform dropouts) and are well balanced. A black dyed product having fastness and dyeability is obtained. The following are specific examples of the dye represented by the formula (1).

[0014]

[Chemical 7]

[0015]

[Chemical 8]

[0016]

[Chemical 9]

[0017]

[Chemical 10]

[0018]

[Chemical 11]

The disperse dye composition of the present invention comprises one or more dyes represented by the formula (1) in a total amount of 10 to 80% by weight, preferably 30 to 60%, and 1 to the dye represented by the formula (2). Thirty
It is prepared by blending the dye represented by the formula (3) in an amount of 20 to 80% by weight, preferably 30 to 60% by weight. Furthermore, it is preferable that the dye represented by the formula (1) contains two or more kinds, and especially the dyes represented by the formulas (4) and (5). The mixing ratio is arbitrary, but 1: 1 is preferable. Further, the disperse dye composition of the present invention may contain not only the dyes represented by the formulas (1) to (3) but also other dyes.

The dye represented by the formula (1) used in preparing the dye composition of the present invention is disclosed in JP-B-62-61.
618, 63-4593, and JP-B-1-57146. Similarly, equation (2),
The dyes represented by formula (3) are C.I. I. Disperse Blue 183 or C.I. I. It is commercially available as Disperse Orange 31, and can be easily obtained from the market. The dye composition of the present invention is obtained by mixing the respective bulk powders of the dyes represented by the formula (1), the formula (2) and the formula (3) in the compounding ratio as described above, and then subjecting them to microparticulation (dispersion) treatment. A dye composition may be prepared as a dye composition, or these powdered powder dyes may be separately finely divided (dispersed) and then mixed in the above-described proportion to form a dye composition. Further, in the latter case, even if the finely divided (dispersed) dye is added to the dye bath or the printing paste to form the same composition as the dye composition of the present invention in the dye bath or in the printing paste. Good.

When the bulk powders of the dyes represented by the formulas (1), (2) and (3) or a mixture thereof are subjected to fine particle treatment, the bulk powders of the dyes are generally formalin of naphthalenesulfonic acid. Condensates, anionic dispersants such as lignin sulfonic acid, or block copolymers of ethylene oxide and propylene oxide, nonionic dispersants such as alkylphenol ethylene oxide adducts, polystyrene oxide phenol ethylene oxide adducts, or the like. It is carried out by sufficiently wet pulverizing with a pulverizer such as a ball mill or a sand mill in the presence of a mixture of an anionic dispersant and a nonionic dispersant and a small amount of water. The dye composition of the present invention is used in the form of paste in the form of fine particles, or after drying, it is used as a dried product for dyeing.

In the disperse dye composition of the present invention, hydrophobic fibers such as polyester fibers are dyed by a dyeing method known per se (dipping method, printing method, discharge printing method, thermosol method, padding method, etc.). A suitable but preferred method is a printing method or a discharge method, particularly a discharge method. As the dip dyeing method, a method known per se such as a high temperature and high pressure dyeing method and a carrier dyeing method can be adopted. In the case of the printing method, a dyeing composition of the present invention, a printing aid, such as a natural sizing agent, a synthetic sizing agent, a reducing agent, a pH adjusting agent and, if necessary, a thickening agent and the like are added to prepare a printing paste. Then, if necessary, a screen (form frame) is used to print on a cloth, heat-treat, and develop a color to perform dyeing.

In order to perform dyeing by the discharge method using the dye composition of the present invention, the dye composition of the present invention is used to dye (ground dyeing) a cloth by a conventional dip dyeing method or a continuous dyeing method, The obtained ground dyeing cloth is printed with a paste containing a discharge-extracting agent such as stannous chloride and subjected to so-called HP (high pressure) steaming at 120 to 130 ° C. for about 20 to 30 minutes, or 170 to
Discharge is performed by performing HT (superheated steam) steaming at 180 ° C. for about 5 to 10 minutes. (Ground dyeing discharge method). Further, a dyeing solution or a color paste containing the dye composition of the present invention is padded or printed on a cloth, and a paste containing a discharge printing agent is printed after intermediate drying, or a paste containing a discharge printing agent is printed on the cloth. After printing the material, a method of padding or printing a dyeing solution or a color paste and steaming HP or HT (prevention method) is also adopted. Further, in order to obtain a dyed product having a complicated pattern pattern, the discharge portion is treated with a color paste or a discharge paste which is not discharged by a discharge agent, that is, a so-called color mixture dye is added. It is also possible to adopt a method of coloring with (a dressing method). In the case of the continuous dyeing method such as the padding method, the dyeing is carried out by a method known per se using a migration inhibitor such as sodium alginate, a reduction inhibitor, and a pH adjuster.

Specific examples of the fibers to which the dyeing method of the present invention is applied include polyethylene terephthalate, polyester mainly composed of polyethylene terephthalate, fibers obtained from cellulose diacetate, cellulose triacetate and the like. Further, they may be the same or a blended product of these and natural fibers such as cotton, silk and wool. A particularly preferred article to be dyed is a polyester fiber.

The disperse dye composition of the present invention not only satisfies the dyeing property and the discharge property in dyeing a hydrophobic fiber, but the dyeing product gives excellent results in fastness such as water, washing and sublimation. ..

[0026]

EXAMPLES The present invention will be described in more detail with reference to the following examples. In the examples, "part" and "%" are "part by weight" and "% by weight", respectively.

Example 1 42 parts of bulk powder of dye represented by formula (4), 42 parts of bulk powder of dye represented by formula (5), 26 parts of bulk powder of dye represented by formula (2), formula (4) 90 parts of the bulk powder of the dye shown in 3), and 12 parts of the bulk powder of Kayaron polyester Rubin BL-S (manufactured by Nippon Kayaku Co., Ltd., disperse dye), and Demol N (manufactured by Kao Co., anion dispersant). ) 106 parts and a few more drops of defoamer and glycerin, the total amount is 100
Fine particles (dispersion) were carried out using a sand grinder to obtain water containing 0 parts of water to obtain a disperse dye composition of the present invention.

7 parts of the obtained disperse dye composition paste was added to 3000 parts of water to prepare a dispersion liquid, which was then adjusted to pH 5 with acetic acid, 100 parts of Tetoron processed yarn woven fabric was dipped and heated to 130 ° C. under the same temperature. After dyeing for 60 minutes, the dyed cloth was thoroughly soaped and dried to obtain a black dyed cloth.
This dyed cloth was excellent in water fastness.

On the other hand, Unistone AM300 (Hayashi Chemical Co., Ltd.)
Made and processed stannous chloride) 30 parts, aromatic carrier 5
Part, Hiprint C-2 (Hayashi Chemical Co., Ltd., original paste for discharge printing), 40 parts of 17% aqueous solution, polyethylene glycol 3
Part, and 22 parts of water were used to prepare a discharge paste, which was printed on the dyed cloth, intermediately dried, and steamed by superheated steam at 175 ° C. for 7 minutes. Then, by washing with water, washing with hot water, and reduction washing, a black dyed article (discharged article) having a remarkably excellent whiteness of the printed portion of the discharge paste was obtained.

Example 2 A discharge-printing paste comprising 10 parts of stannous chloride, 40 parts of Hiprint C-2 17% aqueous solution, and 30 parts of water is printed on a Tetoron-processed woven fabric (palace cloth) and the intermediate is maintained at 100 ° C. for 5 minutes. Dried. Then the disperse dye composition paste 7 obtained in Example 1
Part, sorbitose C-5 (manufactured by Scorten, sizing agent) 4.
5% and fine gum MC-8 (Daiichi Kogyo Seiyaku Co., Ltd.)
Made, sizing agent) Mixed glue consisting of 7.5% aqueous solution (containing 0.2% citric acid and 0.25% sodium chlorate with respect to the colored paste)
A color paste composed of 60 parts and 33 parts of water was overprinted on the intermediately dried cloth. After intermediate drying, steaming was performed at 130 ° C. for 20 minutes under high pressure (HP). Then, by washing with water, washing with hot water, and reduction washing, a black printed material having a remarkably excellent whiteness of the printed portion of the discharge paste was obtained.

Example 3 The present invention was carried out in the same manner as in Example 1 except that 42 parts of the bulk powder of the dye of formula (6) was used instead of the bulk powder of the dye of formula (4) of Example 1. A disperse dye composition of was obtained. Using this composition, discharge preventive dyeing was performed in the same manner as in Example 2 to obtain a black dyeing object having excellent whiteness at the printed portion of the discharge paste and good water fastness.

Example 4 43 parts of the bulk powder of the dye represented by the formula (4), 25 parts of the bulk powder of the dye represented by the formula (7), 30 parts of the bulk powder of the dye represented by the formula (8), and the formula ( 27 parts of the bulk powder of the dye represented by 2) and 80 parts of the bulk powder of the dye represented by the formula (3), 123 parts of Demol N (the above), and Rebenol DT-400 (Kao Corporation)
(Non-ionic dispersant), followed by adding a few drops of antifoaming agent and glycerin, and then adding water so that the total amount becomes 1000 parts, using a sand grinder to form fine particles ( Decentralized). 70 parts of the thus-obtained paste of the disperse dye composition of the present invention, 1 part of Snow Algin SSL (manufactured by Fuji Chemical Co., Ltd., sizing agent), 2 parts of citric acid, Succinol CS-K (manufactured by Senka Co., Ltd., Penetrant) In addition to 0.5 parts of water, 996.5 parts of water,
This aqueous solution is padded onto a Tetoron yarn fabric and
Intermediate drying was carried out at 00 ° C. for 5 minutes.

Next, Uniston AM300 (above) 30
Part, Hiprint C-2 (above) 40% 17% aqueous solution,
A discharge-printing paste composed of 3 parts of polyethylene glycol and 27 parts of water was overprinted on the intermediately dried cloth. After the intermediate drying, steaming with superheated steam was performed at 175 ° C. for 7 minutes. Next, by washing with water, washing with hot water, and reduction washing,
A black dyeing object having excellent whiteness at the printed portion of the discharge paste and having good water fastness was obtained.

Example 5 98 parts of Demol N (above) was added to 42 parts of the bulk powder of the dye represented by the formula (4), and a small amount of water was used to make fine particles until a maximum particle size of 5 μm or less was obtained. Dried fine particles were obtained. The dyes represented by the formulas (5), (2), and (3) and the bulk powders of Kayaron polyester Rubin BL-S (described above) were treated in the same manner to obtain a dry product of fine particles. Thus obtained 1 part of the dye represented by the formula (4), 1 part of the dye represented by the formula (5), 0.6 part of the dye represented by the formula (2), 2 parts of the dye represented by the formula (3), and kaya. Ron polyester Rubin BL-S 0.3 part was added to 3000 parts of water to obtain a dispersion liquid. Dyeing was performed in the same manner as in Example 1 using this dispersion. As a result, a dyed cloth excellent in water fastness was obtained. Further, when this dyed cloth was subjected to discharge printing according to the method of Example 1, a black dyeing object excellent in whiteness of the discharged area was obtained.

[0035]

EFFECT OF THE INVENTION A disperse dye composition for obtaining a black dyeing object having excellent dischargeability and fastness to water, was obtained.

Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI Technical display location D06P 3/87 7306-4H

Claims (2)

[Claims] 1. A formula (1): (In the formula (1), X is chlorine, a methyl group or an acetylamino group, Y is a hydrogen atom or a methoxy group, and R ₁ and R ₂ are optionally branched lower alkyl groups having 1 to 4 carbon atoms. 10 to 80% by weight of one or more dyes represented by the formula (2) 1 to 30% by weight of a dye represented by the formula (3) A disperse dye composition obtained by compounding 20 to 80% by weight of the dye 2. A method for dyeing a hydrophobic fiber, which comprises using the disperse dye composition according to claim 1.