JPH07258571A - Red disperse dye composition and method of dyeing hydrophobic fibrous material therewith - Google Patents

Abstract

PURPOSE:To dye a material composed of fibers of different finenesses to produce a dyed piece excellent in level dyeing and fastness. CONSTITUTION:The composition comprises a dye represented by formula I, a dye represented by formula II (wherein R is hydrogen or lower alkyl) and optionally a dye represented by formula III and/or a dye represented by formula IV.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION 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 a hydrophobic fiber using the same.

[0002]

2. Description of the Related Art In recent years, differentiated products that utilize the characteristics of synthetic fibers have been created as new synthetic fibers by various fiber manufacturers. The yarns that make up these differentiated products are ultrafine fibers,
Composed of a composite processing or combination of differentiated fibers with special characteristics such as special cross-section yarns and different shrinkage mixed yarns. Natural fibers such as silk-like material, thin napped knitted fabric (peach skin), rayon-like material The texture and texture peculiar to synthetic fibers, which is not available in the market, has been accepted, and is rapidly expanding into the market.

However, there is a problem in dyeing and processing these new-sensitized materials, especially because the fibers are extremely fine and the surface area of the fibers is increased. Specifically, (1) reflection on the fiber surface The increase in light reduces the visual density of the dyed product. (2) It is susceptible to oxidation / reduction by light, and the light fastness is lowered. (3) Due to (1), the amount of dye used per unit area increases, and as a result, the dye sublimation and wet fastness decrease. (4) Irregularity (disproportionate dyeing) occurs in the dyed product due to the different thickness of the composited fibers. It is a problem such as.

[0004]

In order to solve these problems, it is necessary not only to use a dye having excellent build-up property and high fastness, but also to use yarns having different thicknesses. It is necessary to use a dye that is excellent in levelness or color uniformity of the composite material. However, few products currently used in the market have these properties sufficiently. Therefore, development of a dye sufficiently having these properties is desired.

[0005]

Means for Solving the Problems The present inventors have conducted sincerity research to solve the above-mentioned problems, and as a result, the above-mentioned problems were solved by blending a disperse dye having a specific structure and dyeing. The inventors have completed the present invention by finding out that they will be solved. That is, the present invention relates to the formula (1) (1)

[0006]

[Chemical 5]

The dye represented by the formula (2)

[0008]

[Chemical 6]

(In the formula (2), R represents hydrogen or a lower alkyl group) and optionally the formula (3)

[0010]

[Chemical 7]

The dye represented by and / or the formula (4)

[0012]

[Chemical 8]

There is provided a red disperse dye composition comprising a dye represented by: and a method for dyeing a hydrophobic fiber material characterized by using the red disperse dye composition. In the present invention, the "lower alkyl" means alkyl having 1 to 4 carbon atoms.

The present invention will be described in detail. Generally, many azo disperse dyes are excellent in build-up property and have relatively high fastness, but they are inferior in level dyeing property. Many of the anthraquinone disperse dyes are excellent in light fastness and level dyeability, but tend to be inferior in build-up properties, sublimation fastness, and the like. Therefore, anthraquinone dyes have been mainly used in the light to medium color fields, and azo dyes have been mainly used in the medium to dark color fields. However, as described above, it has become difficult to dye fibers made of fine fibers and composite materials by using conventional dyes properly. In particular, in the dyeing of a composite material of different fineness yarns, even if the amount of dyeing on the ultrafine yarn side and the regular yarn side are the same, the dyed product resulting from a decrease in the luminous density of the ultrafine yarn side for the reasons described above. There is a problem that unevenness (uneven dyeing) occurs. Therefore,
It is necessary to have the property of being able to dye such a material uniformly or in the same color. At the same time, the ultrafine yarn side is required to have a higher level of fastness than ever before, as described above.

The inventors of the present invention use the dyes represented by the formula (3) and / or the formula (4) if necessary in addition to the formulas (1) and (2), and use the composite material of the different fineness yarn. It has been found that a dye composition having excellent level dyeability and high fastness can be obtained, and the present invention has been accomplished. That is,
By dyeing the above-mentioned composite material with the dye composition of the present invention, a dyed product having excellent levelness and fastness can be obtained.

The dye composition of the present invention preferably contains 20 to 60% by weight of the dye represented by the formula (1), 20 to 50% by weight of the dye represented by the formula (2), and optionally the compound represented by the formula (3). The dye represented by the formula (4) is preferably prepared by blending the dye represented by the formula (4) in an amount of 0 to 20% by weight. More preferably, the dye represented by formula (1) is 30 to 40% by weight, the dye represented by formula (2) is 30 to 40% by weight, the dye represented by formula (3) is 20 to 30% by weight, and It is prepared by blending the dye represented by the formula (4) at a ratio of 5 to 15% by weight. The dyes represented by the formulas (3) and (4) can be added according to the purpose such as hue or fastness, and the object of the present invention can be achieved even if these dyes are not added. Is.

Specific examples of the dye of the formula (2) used in the present invention include:

[0018]

[Chemical 9]

[0019]

[Chemical 10]

And the like, and a mixture thereof can also be used.

Next, the dye represented by the formula (1) used in preparing the dye composition of the present invention is described in JP-B-59-
No. 39471, the dye represented by the formula (2) is described in JP-B-44-13389 and JP-B-44-20269, and the dye represented by the formula (3) is disclosed in JP-B-44-3062.
8 and JP-B-45-8750, the dye represented by the formula (4) is represented by JP-B-43-4212 and JP-B-43-1.
No. 5310 is known, and dye bulk powders can be produced by the methods described therein.

The dye composition of the present invention comprises formulas (1) and (2).
And, if necessary, the respective bulk powders of the dyes represented by the formula (3) and / or the formula (4) are mixed in the above-described mixing ratio, and then finely divided (dispersed) to give a dye composition. Alternatively, the raw powders of these dyes may be separately made into fine particles (dispersion) and then mixed in the proportions as described above. In the latter case, the finely divided (dispersed) dyes may be added to the dye bath to form the same composition as the dye composition of the present invention in the dye bath.

When the bulk powder of the dye represented by the formula (1), the formula (2), the formula (3) and the formula (4) or a mixture thereof is subjected to fine particle treatment, the bulk powder of the dye is generally used. Formalin condensate of naphthalene sulfonic acid and alkylbenzene sulfonic acid, formalin condensate of naphthalene sulfonic acid, formalin condensate of cresol sulfonic acid, formalin condensate of cresol and 2-naphthol-6 sulfonic acid, formalin condensate of alkylnaphthalene sulfonic acid , Formalin condensate of creosote oil sulfonic acid,
Anionic dispersants such as lignin sulfonic acid, block copolymers of ethylene oxide and propylene oxide, nonionic dispersants such as alkylphenol ethylene oxide adducts, polystyrene oxide phenol ethylene oxide adducts, or these anionic dispersants. And a nonionic dispersant, and in the presence of a small amount of water, sufficient wet pulverization is performed using a pulverizer such as a ball mill, sand grinder or sand mill. Further, at this time, the bulk dye is usually blended in a proportion of 10 to 50% by weight with respect to the total amount of the dye composition, and the dye composition of the present invention remains in the form of a finely divided paste,
Alternatively, it is dried and then dyed. Specific examples of the hydrophobic fiber which can be dyed by the method of the present invention include polyester fiber, triacetate fiber, diacetate fiber, polyamide fiber and a blended product of the same, and recycled fiber such as rayon or cotton, silk, It may be a blended product with a natural fiber such as wool.

Hydrophobic fibers are prepared by using a dye composition containing a dye represented by formula (1), formula (2) and optionally formula (3) and / or formula (4) used in the method of the present invention. For dyeing, it is advantageous to dye at a temperature of 105 ° C. or higher, preferably 110 ° C. to 140 ° C. under pressure in an aqueous solvent in which the fibers are immersed. It is also possible to dye in the presence of a carrier such as o-phenylphenol or trichlorobenzene at a relatively high temperature, for example, boiling water.
Alternatively, pad the cloth with the dye dispersion, and
Dyeing by a so-called thermosol method in which dry heat treatment is performed at 230 ° C. for 30 seconds to 1 minute is also possible. On the other hand, the dye composition of the present invention contains a natural sizing agent (eg, locust bean gum, guar gum, etc.), a processed sizing agent (eg, fiber derivative such as carboxymethyl cellulose, processed locust bean gum, etc.), a synthetic sizing agent (eg, polyvinyl alcohol, polyvinyl). It is also possible to prepare a printing paste together with (acetic acid, etc.) and the like, and after printing on a cloth, dyeing by a printing method of steaming or thermosol treatment.

The effects of the present invention will be described below with reference to Tables 1 and 2. In the description, "part" and "%" are "part by weight" and "% by weight", respectively. Table 1 compares the same color properties of 2.0 denier polyester processed yarn fabric (hereinafter referred to as regular PET) and 0.14 denier polyester processed yarn fabric (hereinafter referred to as ultrafine polyester) when dyed in the same bath. Is. It can be seen that all the dye compositions of the examples of the present invention have a smaller concentration difference between the regular polyester and the ultrafine polyester than the commercially available dyes of the comparative examples, that is, the same color property is extremely excellent. Further, it can be seen from Table 2 that each of the dye compositions of the examples of the present invention is excellent in light fastness, sublimation, and water fastness, which requires a high level for ultrafine materials.

[0026]

[Table 1]

(Note 1) A total of 3000 parts of each dye bath containing 2 parts of each of the dye compositions obtained in Examples 1, 2, 3 and 4 was prepared, respectively, and 2.0 denier polyester processed yarn woven fabric was prepared. 50 parts and 50 parts of 0.14 denier polyester processed yarn fabric are dipped and dyed at 130 ° C. for 60 minutes,
It was reduced, washed with water and dried. As a comparative example, a commercially available dye was prepared so that the visual density was almost the same as that of the dye fabric of the dye composition of Example 1, and the dyeing treatment was performed in the same manner. (Note 2) The density-value ratio of ultra-fine PET to regular PET is calculated by the COMSEK III color measurement system (Nippon Kayaku Co., Ltd.
(Manufactured by Mitsui Chemicals, Inc.) The closer the value is to 100, the closer the density value of the dyed product, and the better the color uniformity. (Note 3) As a comparative dye, Disperse Red
Use 60.

[0028]

[Table 2]

(Note 4) A total of 3000 parts of each dye bath containing 2 parts of each of the dye compositions obtained in Examples 1, 2, 3 and 4 was prepared, and 100 parts of polyester tropical cloth was dipped in each. And dyeing at 130 ° C for 60 minutes,
Using the dyed product obtained by reduction washing, water washing, and drying,
A fastness test was performed. The commercially available dye of the comparative example was prepared so that the dye density of the dye composition of Example 1 was substantially the same as that of the dyed product, and the dye was similarly treated.

(Note 5) JIS-L0842, the carbon arc lamp method, and the degree of discoloration are judged by the JIS blue scale for discoloration. (Note 6) JIS-L0879B, 180 ° C., 30 seconds, the degree of contamination on polyester white cloth is judged by JIS contamination gray scale (Note 7) After heat setting the dyed cloth at 180 ° C. for 30 seconds, water test (JIS -L0846) was carried out, and the degree of contamination on the white silk cloth was judged by the JIS contamination gray scale.

[0031]

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

Example 1 With 10 parts of the bulk powder of the formula (1), 12 parts of the bulk powder of the formula (5), 8 parts of the bulk powder of the formula (3) and Formula (4). 3 parts of the dye bulk powder shown were finely divided (dispersed) together with 67 parts of Demol N (manufactured by Kao Corporation, anion dispersant) using a sand grinder to obtain a dye composition of the present invention. To 2 parts of this dye composition, pure water adjusted to pH 4.5 was added to prepare 3000 parts of a dye bath,
Immerse 100 parts of polyester tropical cloth, 130 ℃
After dyeing for 60 minutes with the dyed product, 6 parts of 45% caustic soda, 6 parts of hydrosulfite, Sanmor RC-7
00 (Nikaka Chemical Co., Ltd., anionic surfactant) 3 parts of water was added to make a total volume of 3000 parts, and reduction washing was performed at 80 ° C. for 10 minutes, washed with water, dried and dyed red. I got a thing. The obtained dyed product had good levels of light fastness, sublimation and water fastness.

Example 2 11 parts of the bulk powder of the formula (1), 15 parts of the bulk powder of the formula (5), and 10 parts of the bulk powder of the formula (3) were added to Demol N (described above). Finely divided (dispersed) together with 64 parts by using a sand grinder to obtain a dye composition of the present invention. The following dyeing treatment was carried out in the same manner as in Example 1 to obtain a red dyed product. The light fastness, sublimation, and water fastness of the obtained dyed product were at the same good level as in Example 1.

Example 3 17 parts of the bulk powder of the formula (1) and 14 parts of the bulk powder of the formula (5) were made into fine particles (dispersion) with 70 parts of Demol N (described above) using a sand grinder. ),
A dye composition of the present invention was obtained. The following dyeing treatment was carried out in the same manner as in Example 1 to obtain a red dyed product. Light resistance of the obtained dyed product,
The sublimation and water fastness were at a good level as in Example 1.

Example 4 18 parts of the bulk powder of the formula (1), 10 parts of the bulk powder of the formula (6) and 5 parts of the bulk powder of the formula (4) were added to Demol N (described above). Fine particles (dispersion) were carried out using 70 parts together with a sand grinder to obtain a dye composition of the present invention. The following dyeing treatment was carried out in the same manner as in Example 1 to obtain a red dyed product. The light fastness, sublimation, and water fastness of the obtained dyed product were at the same good level as in Example 1.

Example 5 A total of 3000 parts of each dyebath containing 2 parts of each of the dye compositions obtained in Examples 1, 2 and 3 was prepared, and 2.0 denier polyester processed yarn was prepared. 50 parts of the woven fabric and 50 parts of the 0.14 denier polyester processed yarn woven fabric were dipped and dyed at 130 ° C. for 60 minutes, then reduced and washed, washed with water and dried. Each of the dye compositions was very excellent in the color uniformity of the 2.0 denier yarn fabric and the 0.14 denier yarn fabric.

Example 6 To 20 parts of the dye composition of Example 1 was added 380 parts of water, and then 7.5% of fine gum MC-8 (manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd., sizing agent) and sorbitose C5. (Wa Skotern Co., Ltd., sizing agent) 4.5%, citric acid 0.3% original paste 6
After kneading with 00 parts and printing on a polyester palace cloth and performing high-temperature steaming at 175 ° C for 7 minutes, the dyed product is 2 parts soda ash, 2 parts hydrosulfite, Meisanol BHS New (Meisei Chemical Industry Co., Ltd.) Manufactured nonionic surfactant), water was added to 1 part to make a total amount of 1000 parts, reduction washing was performed at 80 ° C. for 10 minutes, washing with water and drying to obtain a red dyed product. The obtained dyed product had good levels of light fastness, sublimation and water fastness.

[0038]

By the dyeing method using the dye composition of the present invention, excellent levelness and fastness can be obtained in dyeing a material in which fibers having different thicknesses are combined.

Claims (3)

[Claims] 1. A formula (1): And a dye represented by the formula (2): (In the formula (2), R represents hydrogen or a lower alkyl group.) And optionally the formula (3) And / or a dye represented by the formula (4): A red disperse dye composition comprising a dye represented by 2. A dye of the formula (1) according to claim 1 in an amount of 20 to 60% by weight, and a dye of the formula (2) in the range of 20 to 50
2. The dispersion according to claim 1, which is compounded in a proportion of 0 to 40% by weight of the dye represented by the formula (3) and / or 0 to 20% by weight of the dye represented by the formula (4). Dye composition 3. A method for dyeing a hydrophobic fiber material, which comprises using the disperse dye composition according to claim 1 or 2.