JPH06184459A - Dye composition for polyamide fiber, method for dyeing the same and dyed product thereof - Google Patents

Abstract

PURPOSE:To obtain a red dye composition suitable for dyeing polyamide fiber and a dyed product thereof, and to provide a method for dyeing using the composition. CONSTITUTION:This reddish dye composition for three elementary colors used to dye polyamide fiber is obtained by mixing at least >=5wt.% one or more dyes respectively selected from the following dye groups (RA), (RB) and (RC): dye group (RA); C.I. Acid Red 119 dye group (RB): C.I. Acid Red 151 and 299 and dye group (RC) : C.I. Acid Orange 95. The polyamide fiber can be dyed with good level dyeing properties. A dyeing program suitable for the kind of a processing form of the polyamide fiber and a dyeing apparatus can optionally be set by using this dye composition and a blended dye composition thereof. Thereby, a uniform dyed product good in wet color fastness can readily be obtained with good reproducibility.

Description

Detailed Description of the Invention

FIELD OF THE INVENTION This invention relates to dyeing polyamide fibers. More specifically, the present invention relates to a red dye composition for polyamide fibers suitable for sportswear and the like requiring high wet fastness, a dyeing method using the same, and a dyed product thereof.

[0002]

2. Description of the Related Art Recently, with the expansion of the sports clothing market, the demand for the wet fastness of polyamide fibers to the high-concentration dyed products is high. When dyeing polyamide fibers with so-called level dyeing acid dyes, which have a large transferability, the initial dyeing property (strike property) in the room temperature range is relatively large, but the transferability is good. Even if blending, toning, and dyeing are performed, mutual migration occurs in the subsequent temperature rising process, so that it is easy to obtain a dyed product that is uniform over each concentration. Therefore, dyeing with so-called three primary color dyes of yellowish, reddish and blueish colors is favored. However, on the other hand, the wet fastness is insufficient.

In order to solve this drawback, the use of fast-moving acid dyes having good wet fastness is recognized in part. However, wet fast dyes generally have poor leveling properties because of poor transferability and high dyeing speed in the temperature range of 70 to 90 ° C. For this reason, leveling properties cannot be easily obtained even if a device such as a slow heating rate is used. Therefore, it takes a very long time for dyeing, which is not practical. Also,
When dyeing using only one type of fast acid dye, grasp the characteristics and adjust the dyeing conditions (PH, temperature, temperature rising rate, etc.) or use a dyeing aid to achieve uniform dyeing. It is possible to obtain a dyed product.

However, it is usually extremely rare to dye using only a single dye, and in order to obtain a dyed product over a wide hue range, several different color dyes are blended,
It must be toned and correspond to the desired hue. Nevertheless, with regard to the fast-moving acid dye, the dyed product obtained by the compounding dyeing is poor in uniformity, and preferred three primary colors of the fast-moving acid dye have not yet been obtained.

[0005]

However, the present inventors have overcome the drawbacks of conventional dyeing, namely,
The present invention has been completed by discovering a particularly suitable red dye composition for polyamide fiber, by intensively researching a dye and a dyeing method capable of uniformly dyeing polyamide fiber and imparting good wet fastness. .

That is, an object of the present invention is to provide a dye composition capable of dyeing polyamide fibers in a uniform red color and imparting good wet fastness. Another object is to provide a method for dyeing polyamide fibers in red color uniformly and with good wet fastness. Yet another object is to provide polyamide fibers which are dyed a uniform red color and have good wet fastnesses.

The present inventors have found that the fast acid dyes as described in the section of acid dyes in the Color Index 3rd Edition (published by Society of Dyadic Colorists) and dyes of similar chemical structure are yellowish in color. A single dye was selected from each of red, blue, and blue, and the dyeing behavior of the polyamide fiber was investigated under the same dyeing condition.

As a result, previously, in each of the three primary color systems, by selecting and blending a single dye from each group classified into three groups, a dye for three primary colors which is wet fast and is capable of imparting levelness It has been found that a composition can be obtained, dyeing speeds of the three primary colors can be made uniform, and dyeing can be performed in a so-called good compatibility state, and a uniform dyeing product can be obtained with good reproducibility at each concentration and each temperature. (Japanese Patent Application Sho 63-200
No. 91) found an even more excellent red dye composition and completed the present invention.

[0009]

The present invention provides the following dye groups (R
A red dye composition for three primary colors for dyeing a polyamide fiber, comprising at least 5% by weight of one or more dyes selected from A), (RB) and (RC).

Dye group (RA): C.I.Acid Red 119 Dye group (RB): C.I.Acid Red 151, 299 Dye group (RC): C.I.Acid Orange 95

The present invention also provides a method for dyeing polyamide fibers, which comprises dyeing polyamide fibers with the red dye composition. Furthermore, the present invention relates to a polyamide fiber dyed with the above red dye composition.

The present invention further provides the above red dye composition with the following dye groups (YA), (YB) and (YC) dye group (YA); CIAcid Yellow 42, 219 dye group (YB): CIAcid Orange. 67, 127 Dye group (YC): CI Acid Orange 95, 127

A yellow dye composition prepared by mixing at least 5% by weight of one or more dyes selected from the following dye groups (BA), (BB) and (BC) dye group (BA): CIAcid Blue 127, 127: 1 Dye group (BB): CIAcid Blue 40, 260 Dye group (BC): CIAcid Blue 40, 264

At least 5% by weight of at least 5% by weight of one or more dyes selected from the above, and a compounded dye composition prepared by mixing two or three primary colors of a blue dye composition, and the same are used. A method of dyeing polyamide fibers,
Furthermore, it is a polyamide fiber dyed in this way.

The method of the present invention will be described in more detail below. The red-colored dye composition for three primary colors for dyeing the polyamide fiber of the present invention can obtain a dyeing product having good levelness even by itself, but especially for the above-mentioned yellow-based dye composition for three primary colors and three primary colors. When used together with a blue dye composition, when used as a so-called three-primary-color dye composition,
It brings about more preferable results.

Accordingly, the present invention includes a mixed dye composition for three primary colors, and a method for dyeing a polyamide fiber using the same, and a polyamide fiber dyed with the same.

Each dye group added to the above-mentioned dye composition
The dyes (YA), (RA) and (BA) are characterized in that they belong to dyes having a low dyeing speed in the region of 30 to 70 ° C. during the temperature raising process of dyeing polyamide fibers.

The dyes of the above-mentioned dye groups (YB), (RB) and (BB) are characterized in that they belong to dyes having a high dyeing speed in the region of 50 to 80 ° C. during the temperature raising process of polyamide fibers. is there. Further, the dyes of the dye groups (YC), (RC) and (BC) described above are
It is characterized in that it belongs to a dye which has a dyeing rate (YB), (RB) or (BB) which is about the same as or slightly higher than the dyeing speed in the region of 50 to 80 ° C.

In preparing the yellow, red, and blue-based compounded dye compositions, which are the preferred embodiments of the present invention, at least 5 parts by weight of a single dye from each group (each individual primary color system) is prepared. It is preferable to use 10 parts by weight or more, preferably 100 parts by weight or more of the compounded dye composition.

As a compounding method, individual dyes selected from these dye groups may be added to the dyeing bath at the time of dyeing, but when it is complicated, before adding to the dyeing bath in advance. , A dye composition prepared by mixing selected individual dyes, more preferably, a dye composition for three primary colors selected from a dye group from each of the three primary color systems so that it can be used in a wide hue range. It is good to mix things.

In the three primary color dyeing with the yellow, red and blue compounded dye compositions thus obtained,
Even if these are blended in an arbitrary ratio, advantageous dyeing can be realized without impairing the level dyeing property.

The polyamide fiber according to the present invention is a natural polyamide fiber such as wool, a synthetic polyamide fiber such as nylon, or a fiber obtained by mixing and spun with natural and synthetic polyamides. ,
Examples include woven fabrics, knitted fabrics, and rugs. The dye composition according to the present invention has a smaller change in dyeing speed with a change in dyeing temperature and a smaller maximum dyeing speed as compared with the conventional fast-acting acid dyes, and thus has excellent levelness.

In the dye composition according to the present invention, the dyeing curve is (1) as in the case of the compounded dye of (4) shown in FIG.
, Which is milder than the dye of (2) and is advantageous in obtaining level dyeing. Further, when the compounded dye composition obtained from the present invention is used for compounding dyeing as the three primary colors, the dyeing speed is similar without being influenced by the compounding ratio of each dye, and the compounding dyeing of the fast acid dye The blocking phenomenon often seen in

That is, the dye composition according to the present invention provides a fast-type acidic dye red dye for the three primary colors having very good compatibility. FIG. 2 shows a dyeing curve in dyeing with three primary colors.

[0025]

EFFECTS OF THE INVENTION According to the present invention, polyamide fibers can be dyed with good leveling property by using a specific compounded dye composition.

Conventionally, in the case of compound dyeing using a single fast acid dye, a very complicated dyeing operation which requires setting of temperature raising conditions and adjustment of dyeing conditions corresponding to each dyeing speed is required. However, in the dye composition and the compounded dye composition thereof according to the present invention, a dyeing program suitable for the processing form of the polyamide fiber and the type of dyeing device can be arbitrarily set, and a uniform and wet fastness A good dyed product can be reproducibly and easily obtained. As a result, it has been found that the dyeing time which has conventionally required a long time can be inevitably shortened, and an industrially advantageous dyeing method can be established.

In particular, it has been found that a method in which a dyeing compatibility is good by using a red dye composition of a fast acid dye as a three-primary-color dye in this way, regardless of the mixing ratio, From the fact that it is surprising, the industrial value of the present invention is extremely great.

[0028]

【Example】

 EXAMPLES Next, the present invention will be described by examples.

Example 1 As a fast acid dye (1) CIAcid Red 119 (dye group RA) (2) CIAcid Red 299 (dye group RB) (3) CIAcid Orange 95 (dye group YC) (4) ) A compounded product containing the dyes of (1), (2) and (3) above in the same amount.

A synthetic polyamide fiber was dyed with a red dye consisting of and the dyeing speed curve was measured at the same time. The dyeing conditions are as follows. Equipment used: Mini color type 12 (manufactured by Texam Giken) Dyeing object: Nylon taffeta (Toray 22QJ) Bath ratio: 1:30 Dyeing density: 1.0% owf Auxiliary agent: Ammonium sulfate 2.0% owf

The dyeing rate curves of the single dyes (1), (2) and (3) and the compounded dye of (4) are shown in FIG. After raising the temperature from 40 ° C to 90 ° C for 20 minutes, the temperature was maintained at 90 ° C for 30 minutes.
In the total time of 50 minutes, the compounded dye (4) obtained a dyeing having good levelness. The single dyes (1) and (2) lack levelness. As shown in Table-1, the dyeing speeds of the dyes (1) and (2) are large in the temperature range of 70 to 90 ° C, and lack in levelness.

[0032]

[Table-1]

Examples 2 to 4 The red dyes (1), (2) and (3) used in Example-1 were dyed at the compounding ratios shown in Table-2 under the same conditions as in Example-1,
In each case, a dyed product having good levelness was obtained.

[0034]

[Table-2]

Example-5 Compounded dye of (4) of Example-1 as a reddish color of a fast acid dye and compounded dye of the following composition as a yellowish color (5) CIAcid Yellow 42 (dye group YA) (6) CIAcid Orange 67 (Dye group YB) (7) CIAcid Orange 127 (Dye group YC) (8) Formulated with the same amount of the dyes of (5) (6) (7) above

A blue-based compounded dye having the following composition (9) CIAcid Blue 127 (dye group BA) (10) CIAcid Blue 260 (dye group BB) (11) CIAcid Blue 40 (dye group BC) (12) The same amount of the above dyes (9), (10) and (11)

Was dyed under the dyeing conditions of Example-1. However, the temperature condition was that the temperature rising time from 40 ° C. to 90 ° C. was 40 minutes, and then the temperature was kept at 90 ° C. for 30 minutes. The amount of each of the three primary colors dyed on the dyed product was measured. The result of the dyeing speed curve is shown in FIG. The dyeing speeds of the three primary colors are similar. A dyed product having a good compatibility and a uniform brown color was obtained.

Comparative Example-1 As the yellow, red and blue dyes of the fast acid dye, the following commercially available dyes were used as the three primary colors in the same amounts and dyed under the dyeing conditions of Example-5. did. (13) CIAcid Orange 67 (14) CIAcid Red 299 (15) CIAcid Blue 138

During the heating process of dyeing, dyeing on the way was noticeably dyed with a reddish component, and finally a brown dyed product was obtained. The compatibility between the dyes is poor and the level dyeability is poor, and there is a problem in the reproducibility of the dyed product. The amount of each of the three primary colors dyed on the dyed product was measured. The result of the dyeing speed curve is shown in FIG. Compared to FIG. 2 of Example-5, the dyeing speeds of the three primary colors are uneven.

Example 6-8 The compounding ratios of the compounded dyes (4), (8) and (12) of Example-5 are shown in the table.
It changed like 3 and was dyed. The dyeing conditions are the same as in Example-5. In each case, good compatibility and a uniform dyed product were obtained.

[0041]

[Table-3]

Example-15 As a fast-acting acid dye, the compounded dye used in Example-5
(4) The same amounts of (8) and (12) were mixed, and wool was dyed. The dyeing conditions are as follows.

Dyeing object; Wool sliver bath ratio; 1:30 Dyeing density; 1.0% owf acetic acid; Add to PH = 4 Glauber's salt; 5% owf temperature; 50 ° C to 100 ° C in 40 minutes, 100 ° C At 30
The dyeing behavior with good compatibility was exhibited, and a brown dyed product was obtained.

[0044]

[Brief description of drawings]

1 to 3 show dyeing speed curves of various dyes.

1 relates to Example-1, C.I. I. Acid
Red 119 to (1), C.I. I. Acid Red
299 to (2), C.I. I. Acid Orange9
5 is indicated by (3), and the dye prepared by blending the above-mentioned (1), (2) and (3) in the same amount is indicated by (4).

2 relates to Example-5, C.I. I. Acid
Yellow 42, C.I. I. Acid Orange
e 67, C.I. I. A yellow dye prepared by mixing the same amount of Acid Orange 127 with (8) was used. I. Aci
d Blue 127, C.I. I. Acid Blue
260, C.I. I. A blue dye prepared by mixing Acid Blue 40 in the same amount is shown in (12).

FIG. 3 relates to Comparative Example-1 and includes C.I. I. Acid
Orange 67 was added at (13) to C.I. I. Acid
Red 299 in (14), C.I. I. Acid B
lue 138 is shown by (15).

[Explanation of symbols]

(1) ……………… C. I. Acid Red 119 (2) ……………… C. I. Acid Red 299 (3) ……………… C. I. Acid Orange
95 (4) ……………… Dyes prepared by blending the same amounts of (1), (2) and (3) above.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shuhei Hashizume 3-98 Kasugadeka, Konohana-ku, Osaka Sumitomo Chemical Co., Ltd.

Claims (5)

[Claims] 1. A red system for three primary colors for dyeing a polyamide fiber, which is prepared by mixing at least 5% by weight of one or more dyes selected from the following dye groups (RA), (RB) and (RC). Dye composition. Dye group (RA): CIAcid Red 119 Dye group (RB): CIAcid Red 151, 299 Dye group (RC): CIAcid Orange 95 2. A method for dyeing polyamide fibers, which comprises dyeing polyamide fibers with the red dye composition according to claim 1. 3. A polyamide fiber dyed with the red dye composition according to claim 1. 4. The following dye group (YA), (YB) and (YC) dye group (YA); CIAcid Yellow 42, 219 dye group (YB): CIAcid Orange 67, 127 dye group (YC): CIAcid Orange 95 , 127, a yellow dye composition prepared by mixing at least 5% by weight of one or more dyes selected from the following, dye groups (RA), (RB) and (RC) dye group (RA): CIAcid Red 119 Dye group (RB): CIAcid Red 151, 299 Dye group (RC): CIAcid Orange 95 A red dye composition prepared by mixing at least 5% by weight of one or more dyes selected from the following respectively. Dye group (BA), (BB) and (B
C) Dye group (BA): CIAcid Blue 127, 127: 1 Dye group (BB): CIAcid Blue 40, 260 Dye group (BC): CIAcid Blue 40, at least 5 kinds of at least one dye selected from 264 A method for dyeing polyamide fibers, which comprises blending a blue dye composition prepared by blending at least wt% to dye polyamide fibers. 5. A polyamide fiber dyed by the method according to claim 4. [0001]