JPH0253972A - Dye composition for polyamide fiber, dyeing process and fiber dyed with the same composition - Google Patents

Abstract

PURPOSE:To obtain a uniformly dyed fiber having high compatibility in high reproducibility by dyeing a polyamide fiber with a dye composition produced by compounding yellow, red and blue simple dyes or with a mixture of said compounded primary colors at proper ratios. CONSTITUTION:A polyamide fiber is dyed with a dye having high wet color fastness by using a dye composition produced by selecting and compounding a yellow dye consisting of group (YA) comprising C.I. Acid Yellow 42, 219 and a compound of formula I (X is Cl, etc.), group (YB) comprising Orange 67, 217 and group (YC) comprising Orange 95, 127. A level dyeing can be achieved in high compatibility by the use of the above dye composition in contrast with the dyeing with simple dye causing nonuniform dyeing. The similar dyeing property can be attained by using a red dye consisting of a selected and compounded mixture from group (RA) C.I. Acid Red 119, group (RB) Red 151, 299, a compound of formula II (R1 and R2 are H or CH3; R3 and R4 are H, CH3, etc.) and group (RC) Red 266, 299 or using a blue dye consisting of a selected and compounded mixture from group (BA) C.I. Acid Blue 127, group (BB) 40, 260, group (BC) 40, 264, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to the dyeing of polyamide fibers. More specifically, the present invention relates to a dye composition for polyamide fibers suitable for sportswear and the like requiring high wet fastness, a dyeing method thereof, and a dyed product thereof.

Conventional Techniques Recently, with the expansion of the sports clothing market, there has been a high demand for wet fastness of polyamide fibers for medium and high density dyed products.

When dyeing polyamide fibers with so-called level-dyeing acid dyes that have a high dye migration property, the initial dyeing property (strike property) at room temperature is relatively large, but in order to improve the dye migration property, several types of dyes are blended. Even if dyeing is carried out after toning, mutual dye transfer occurs during the subsequent temperature raising process, so it is easy to obtain a uniform dyed product over each concentration. Therefore, dyeing with the so-called three primary color dyes of yellow, red and blue can be used without any inconvenience.

However, on the other hand, it is insufficient in terms of wet fastness.

In order to solve this drawback, the use of fast acid dyes with good wet fastness has been accepted in some cases. However, wet-fast dyes generally have poor level dyeing properties because they have poor dye migration properties and the dyeing rate increases in the temperature range of 70 to 90°C. For this reason, level dyeing cannot be easily obtained even if operational measures such as slow heating rate are taken. Therefore, dyeing takes a very long time and is not practical. In addition, when dyeing using only one type of fast acid dye, it is necessary to understand its characteristics and set the dyeing conditions (P [1, temperature, heating rate, etc.)
It is possible to obtain uniformly dyed products by adjusting the dyeing temperature and using dyeing aids. However, it is extremely rare to use only a single dye for dyeing, and in order to obtain dyed products with a wide range of hues, it is necessary to mix and match several different color dyes to match the desired hue. There must be. However, in the case of fast acid dyes, dyed products obtained by compound dyeing lack uniformity, and preferred three primary colors of fast acid dyes have not yet been obtained.

Problem to be Solved by the Invention However, the present inventors have attempted to overcome the drawbacks of conventional dyeing, namely, to uniformly dye polyamide fibers,
The present invention has been completed through extensive research into dyes and dyeing methods that can provide good wet fastness.

That is, an object of the present invention is to provide a dye composition capable of uniformly dyeing polyamide fibers and imparting good wet fastness.

Another object is a method for dyeing polyamide fibers uniformly and with good wet fastness. Yet another object is to provide polyamide fibers that are uniformly dyed and have good wet fastness.

Means for Solving the Problems The present inventors have developed fast acid dyes such as those described in the acid dye section of Color Index 3rd Edition (published by Society of Dyers Laboratories) and similar chemical structures thereof. A single dye was selected from each of the yellow, red, and blue dyes, and the dyeing behavior of each dye was investigated on polyamide fibers under the same dyeing conditions.

As a result, in each of the three primary color systems, by selecting and blending a single dye from each group classified into three groups, we obtained a blended three primary color dye composition that was wet-fast and capable of imparting flat dyeing properties. The present invention was completed after discovering that it became possible to align the dyeing speeds of the three primary colors and (e) dye with good compatibility, thereby obtaining uniform dyed products with good reproducibility at each concentration and temperature. This is what I did.

That is, the present invention provides (1) the following dye groups (YA), (YB)
A yellow dye composition for dyeing polyamide fibers, which is prepared by blending one or more selected from (YC) and (YC).

Dye group (YA); C, T, ^cid Yellow 4
2.219 and a yellow dye represented by the general formula (I) in the form of a free acid (in the formula, X represents C1 or 8r) Dye group (YB): C, T, Acjd Orange 6
7.127 Dye Group (YC): C, 1, Acjd Ora
nge 95.127 (2) A red dye composition for dyeing polyamide fibers prepared by blending one or more selected from the following dye groups (RA), (formerly 3) and (RC).

Dye group (RA): C, 1, Acjd Red 119 Dye group (RB): C, T, Acjd Red 15], 2
99 and a red dye represented by the general formula (II) in the form of a free acid General formula (IT) (wherein 1 (1 and R2 represent 11 or C113, R3 and R4 represent H2CO2 or 0CR3) Dye Group (RC): C, T, Acjd Red 266.
299(3) The following dye groups (BA), (BB) and (BC
) A blue dye composition for dyeing polyamide fibers, which is prepared by blending one or more selected from the following.

Dye group (BA): C, T, Ac1d Blue 127
．． 127: ] Dye group (BB): C, 1, Acjd Bl
ue 40.260 dye group (BC): C, T, Ac1d
Blue 40.264 (4) A dye composition formed by selecting and blending two or more of the dye compositions according to claim 1, 2 or 3.

(5) Claims 1 and 2 when dyeing polyamide fibers
Polyamide fiber dyeing method (6) characterized by using the dye composition according to claim 1, 2.3 or 4, characterized in that the dye composition according to claim 1, 2.3 or 4 is used. related to.

The dyes of the dye groups (VA), (RA), and (BA) are characterized by belonging to dyes that have a slow dyeing rate in the temperature range of 30 to 70° C. during the heating process for dyeing polyamide fibers.

The dyes of the dye groups (YB), (RB), and (BB) are characterized by belonging to dyes that have a high dyeing rate in the range of 50 to 80'C during the heating process for dyeing polyamide fibers.

Dyes of dye groups (YC), (RC) and (BC) are 50~
Dye groups (YB), (RB) and (BB) in the region of 80°C
) belongs to the category of dyes whose dyeing speed is about the same or slightly lower.

In preparing the yellow, red, and blue dye compositions, at least 5 parts by weight of a single dye from each group for each tricolor (per 100 parts by weight of each individual dye composition) should be added. It is preferable to use and mix the above.

Also, as a preparation method, individual dyes selected from these dye groups may be added to the dye bath at the time of dyeing. Preparing a dye composition by blending individual dyes,
More preferably, 11] dye compositions for the three primary colors selected from the group of dyes from each of the three primary color systems are prepared so that they can be used in a wide range of hues.

In dyeing the three primary colors using the thus obtained yellow, red and blue dye compositions, advantageous dyeing can be achieved without impairing the level dyeing properties even if these are blended in any ratio.

The polyamide fibers according to the present invention include natural polyamide fibers such as wool, synthetic polyamide fibers such as nylon,
Alternatively, it is a fiber blended with natural and synthetic polyamides, and its forms include loose wool, thread, woven fabric, knitted fabric, and carpet.

The dye composition obtained from the present invention exhibits excellent level dyeing properties because the change in dyeing rate due to changes in dyeing temperature is small and the maximum dyeing rate is small compared to conventional fast acid dyes.

In the case of the mixed dye composition according to the present invention, for example, in the case of yellow color, as in the case of mixed dye (4) shown in FIG. ``obtain''- is advantageous. Furthermore, when the blended dye composition obtained from the present invention is used as the three primary colors for blended dyeing, the dyeing speed is approximate without being affected by the blending ratio of each dye, and the dyeing rate is similar to that of fast acid dyes for blended dyeing. The blogging phenomenon that is often observed in

That is, the formulated dye composition according to the present invention provides fast acid dye primary colors with very good compatibility. Figure 2 shows the dyeing curve in the three primary color combination dyeing.

Conventionally, when blending dyeing using a single fast acid dye, a very complicated dyeing operation was required, which required setting heating conditions and adjusting dyeing conditions according to each dyeing speed. With the blended dye compositions and their blended dye compositions according to the present invention, dyeing programs suitable for the processing form of polyamide fibers and the type of dyeing equipment can be arbitrarily set, and dyeing programs that are uniform and have good wet fastness can be obtained. Dyeings can be easily obtained with good reproducibility. As a result, the dyeing time, which conventionally required a long time, can naturally be shortened, and an industrially advantageous dyeing method can be established.

It is surprising from conventional wisdom that we have found a method that uses three primary color dyes made of fast acid dye compositions and has good dye compatibility no matter what the blending ratio. At the same time, the industrial value of the present invention is extremely large.

Example Next, examples of the present invention will be explained with reference to Examples.

Example-1 As a yellow fast acid dye (1) C, 1, Ac1d Yelloti 42 (dye group YA) (2) C, T, Ac1d Orange 67
(Dye group'/B) (3) C, T, Ac1d Orang
e 127 (dye group VC) (4) above (1) (2) (3
Synthetic polyamide fibers were dyed using the same amount of the dye prepared in ), and the dyeing rate curve was measured at the same time.

The dye conditions are as follows.

Equipment used: Mini color 12 type (manufactured by Texa 11 Giken) Material to be dyed: Nylon taffeta (Toshi 1122QJ) Bath ratio;
1:30 Staining concentration; 1.0% 0. Auxiliary agent; ammonium sulfate 2.0%0. The dyeing rate curves of the single dye (1) (2) (3) and the blended dye (4) are shown in FIG.

After increasing the temperature from 40℃ to 90℃ for 20 minutes,
It was held at 90°C for 30 minutes. In a total time of 50 minutes, a dyed product with good level dyeing properties was obtained using the prepared dye (4). Single dye (1
)(2) lacks level dyeing properties. As shown in [Table-1] (1
) The dyeing speed of the dye (2) is high in the temperature range of 70 to 90'C, and the dyeing property is poor.

[Table-1 Example 2-4 Yellow dye used in Example-1 (1) (2) (3)
were dyed under the same conditions as in Example 1 using the mixing ratios shown in Table 2, and dyed products with good level dyeing properties were obtained in all cases.

[Table 2 (Values are percentages of blending ratio of each dye) Example-
5 As a red fast acid dye (5) C, 1, Ac1d Red 119 (dye group RA
) (6) C, 1, Ac1d Red 151 (dye group 8
(7) C01, Ac1d Red 299 (dye group RC) (8) Synthetic polyamide fibers were prepared using the same amount of the dyes in (5), (6), and (7) above under the dyeing conditions of Example-1. stained. (5) Compared to the single dye of (6),
The blended dye (8) had good level dyeing properties.

Example-6 As a blue fast acid dye (9) C, 1, Ac1d Blue 127 (dye group BA) (10) C, 1, Ac1d B'lue 260
(Dye group BB) (11) C, '1. Ac1d Blue
40 (dye group BC) (12) above (9) (10)
Synthetic polyamide fibers were dyed using the same amount of the dye (11) under the dyeing conditions of Example-1. (9) (10
) The blended dye (12) had better level dyeing properties than the single dye (12).

Example-7 The yellow color of the fast acidic dye is the blended dye of Example-1 (4), and the red color is the blended dye of Example-5 (8).
As a blue color, the dye prepared in Example 6 (12) was mixed in the same amount and dyed under the dyeing conditions of Example 1. However, the temperature condition was that the temperature was raised from 40°C to 90°C for 40 minutes, and then held at 90°C for 30 minutes. The amount of each of the three primary colors dyed on the dyed article was measured. The dyeing rate curve results are shown in FIG. The dyeing speeds of the three primary colors are approximate.

11) A dyed product with good compatibility and a uniform brown color.

Comparative Example-1 As yellow, red, and blue fast acid dyes, the following dyes used in cloth were used in three primary colors in equal amounts, and dyed under the dyeing conditions of Example-7. did.

(13) C, T, Acjd 0raBe 67 (14)
C0T, Acj, d Red 299 (+5) C, T,
Acjd Blue 138 dyeing During the heating process, reddish component staining was noticeable on the dyed product during the dyeing process, and a brown dyed product was finally obtained. There is a lack of level dyeing due to poor compatibility between each dye, and there are also problems with the reproducibility of dyed products. The amount of each of the three primary colors dyed on the dyed article was measured. The dyeing rate curve results are shown in FIG. The dyeing speeds of the three primary colors are uneven compared to the second sample relating to Example-7.

Example 8-9 Dyeing was carried out by changing the blending ratio of the dyes (4), (8), and (+2) of Example-7 as shown in [Table-3]. The staining conditions are the same as in Example-7.

In both cases, good compatibility and uniform dyeings were obtained.

[Table 3 (values are percentages of blending ratios of each blended dye)] + Example" -0-14 As shown in [Table 4] for yellow, red, and blue, the compatibility of each color yarn Dyeing was carried out under the dyeing conditions of Example 7 using a well-prepared dye composition. However, the staining density is listed in the table. In all cases, the level dyeing properties were good.

[Table 4] Example 15 As a fast acid dye, the blended dye used in Example 7 (
4) Equal amounts of (8) and (12) were mixed to dye wool. The staining conditions are as follows.

Object to be dyed; wool sliver bath ratio; 1. :30 Staining concentration; ],, o% o, su, f Acetic acid; PI (added so that = 4) Glauber's salt; 5% o, w, f Temperature: Increased temperature from 50'C to 100°C in 40 minutes, 1
When kept at 00° C. for 30 minutes, it showed good dyeing behavior with good compatibility, and a brown colored dyed product was obtained.

[Brief explanation of the drawing]

Figures 1 to 3 show the dyeing rate curves of various dyes. FIG. 1 relates to Example-1, and shows C and I. Acjd Ye]]ot+ 42 (1), C, 1, A
cjd Orange 67 (2), C, T, Acj
d Orange127 is shown in (3), and the above (1) (
2) The dye prepared by mixing the same amount of (3) is shown in (4). Figure 2 relates to Example-7, and shows C, T, Acjd
Ye], ]ow 42, (:, l:, Acjd
Orange 67, C0■, Acj dOra
nge ], 27 in the same amount (4)
So, C, T, Accjd Rad 119, C, T, A
cjd Rcd 15], CJ. Red dye prepared by mixing the same amount of Acjd Red 299 in (8), C, T, Ac1d Blue] 27,
C, 1, Acjd 13]ue 260, C, T, Ac
1d Blue dye mixed with the same amount of Blue 40 (
12). Fig. 3 is related to Comparative Example-1, and C, T, Acjd Orange 67 (
13), C,I. Ac1d Rcd 299 in (14), C, T, Ac
jd old uc 138 is shown in (15).

Claims (6)

[Claims] (1) A yellow dye composition for dyeing polyamide fibers prepared by blending one or more selected from the following dye groups (YA), (YB), and (YC). Dye group (YA); C. I. AcidYellow42,
219 and a yellow dye represented by the general formula (I) in the form of a free acid General formula (I) ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (In the formula, X represents Cl or Br.) Dye group (YB ):C. I. AcidOrange67,
127 dye group (YC): C.I. I. AcidOrange
95, 127 (2) A red dye composition for dyeing polyamide fibers prepared by blending one or more selected from the following dye groups (RA), (RB), and (RC). Dye group (RA): C. I
．． AcidRed119 dye group (RB): C.I. I. Ac
idRed151,299 and the free acid form of the general formula (
II) Red dye general formula (II) ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (In the formula, R_1 and R_2 represent H or CH_3, and R_3 and R_4 represent H, CH_3 or OCH_3.) Dye group (RC):C. I. AcidRed266, 29
9 (3) A blue dye composition for dyeing polyamide fibers prepared by blending one or more selected from the following dye groups (BA), (BB), and (BC). Dye group (BA): C. I. AcidBlue127, 1
27:1 dye group (BB): C.I. I. AcidBlue4
0,260 dye group (BC): C.I. I. AcidBlue
40, 264 (4) A dye composition prepared by blending two or more dye compositions selected from among the dye compositions according to claim 1, 2, or 3. (5) When dyeing polyamide fibers, claims 1 and 2
A method for dyeing polyamide fibers, characterized by using the dye composition according to , 3 or 4. (6) A polyamide fiber dyed with the dye composition according to claim 1, 2, 3 or 4.