JP2003176422A - Black mordant dye composition, and method for dyeing natural protein fiber or blended product thereof by using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a black mordant dye composition capable of achieving good black color and excellent wet fastness without accompanying yellow bleeding in wool dyeing. <P>SOLUTION: The black mordant dye composition comprises C.I. Mordant Black 11 and an amidosulfonic acid in an amount of 20-35 wt.% of the C.I. Mordant Black. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to C.I. I. The present invention relates to a black mordant dye composition comprising Mordant Black 11 and amidosulfonic acid and a method for dyeing a natural protein fiber or a blend thereof using the same, and more specifically, chromium for obtaining a black dyed product that does not cause yellow bleed The present invention relates to a mordant dye composition.

[0002]

2. Description of the Related Art Conventional commercially available C.I. I. It is known that Mordant Black 11 causes a yellow bleed component in a dyed product when dyeing a natural protein fiber or a blend thereof, and adversely affects the wet fastness of the dyed product. Therefore, C.I. I. Alkaline soap was later said to be indispensable for dyeing with Mordant Black 11.

[0003]

[Problems to be Solved by the Invention]

[0007]

EXAMPLES Example 1 100 parts by weight of C.I. I. Mordant Black 11 and 25
Dye composition comprising 5 parts by weight of amidosulfonic acid 5%
o. w. The wool cell surge is immersed in a dye bath containing f and heated from 40 ° C to 100 ° C over 60 minutes. After dyeing for 30 minutes at the same temperature, the mixture is gradually cooled to 80 ° C. and potassium dichromate 1% o. w. f. And 10 minutes later
The temperature is raised to 0 ° C., and dyeing is performed for 30 minutes. Wash the dyed product with water,
It was dried to obtain a black dyed product. The dyed product thus obtained had excellent wet fastness, and even in the sweat alkali fastness test, almost no yellow stain was generated on the attached cloth (wool, 6 nylon).

Example 2 100 parts by weight of C.I. I. Moldant Black 11 and 28
A black dyed product was obtained in the same manner as in Example 1 except that a dye composition containing 1 part by weight of amidosulfonic acid was used. The dyed product thus obtained has excellent wet fastness, and even in the sweat alkali fastness test, the attached cloth (wool,
Little yellow stain was generated on 6 Nylon).

Example 3 100 parts by weight of C.I. I. Moldant Black 11 and 22
A black dyed product was obtained in the same manner as in Example 1 except that a dye composition containing 1 part by weight of amidosulfonic acid was used. The dyed product thus obtained has excellent wet fastness, and even in the sweat alkali fastness test, the attached cloth (wool,
Little yellow stain was generated on 6 Nylon).

Comparative Example 1 100 parts by weight of C.I. I. Moldant Black 11 and 22
Parts by weight of sodium sulfate and the invention include C.I. I. A black mordant dye composition capable of preventing yellow bleeding of a dyed product and obtaining a black dyed product having excellent wet fastness without adding an alkali soaping step in dyeing wool or the like using Mordant Black 11. It is intended to provide a product and a dyeing method using the product.

[0004]

DISCLOSURE OF THE INVENTION As a result of repeated studies to achieve the above object, the present inventors have found that C.I. I. The present inventors have found that a black mordant dye composition composed of Mordant Black 11 and amidosulfonic acid is suitable for achieving the purpose, and arrived at the present invention. That is, the present invention is more specifically described in C.I. I. A black mordant dye composition comprising Mordant Black 11 and an amount of amidosulfonic acid exceeding 20% by weight and less than 35% by weight, and the black mordant dye composition,
The present invention provides a method for dyeing a natural protein fiber such as wool or a blended fiber thereof, which is characterized in that it is dyed under a condition that the final bath pH is not 6 or less.

In the present invention, the above-mentioned amidosulfonic acid plays a role of a dyeing acid in acid dyeing, and its amount is C.I. I. When the content of the Mordant Black 11 is 20% by weight or less, the dye exhaustion becomes insufficient, and when it is 35% by weight or more, the yellow bleed component is exhausted by the dyed product, resulting in deterioration of the wet fastness. Therefore, when the dye composition of the present invention is used for dyeing, it is not necessary to add a dyeing acid, and addition of the dyeing acid may hinder the improvement of yellow bleed. At least when dyeing acid is added, the final bath pH must not be 6 or less. The preferred amount of amidosulfonic acid is C.I. I. Moldant Black 11 2
The amount is 2% by weight or more and 28% by weight or less.

[0006]

The substantial dye component of the composition of the present invention is as described above, and this composition also requires one or more mordant dyes for toning. A dye composition of 5% o. w. f. Was added, and acetic acid 3% o. w. Dip the wool cell surge into the dyebath containing f, and apply 100 minutes at 40 ° C over 60 minutes.
Raise the temperature to ℃. 80 minutes after dyeing for 30 minutes at the same temperature
Gradually cooled to 0 ° C., potassium dichromate 1% o. w. f. Is added, and after 10 minutes, the temperature is raised to 100 ° C. and dyeing is continued for 30 minutes. The dyed product was washed with water and dried to obtain a black dyed product. In the sweat-alkali fastness test, the dyed product thus obtained showed remarkable yellowish stain on the attached cloth (wool, 6 nylon). The stain on the cloth attached to nylon changed from yellowish to bluish over time.

COMPARATIVE EXAMPLE 2 A dyebath containing the dye composition of Example 1 and 3% acetic acid. w. f.
Is added, 8 g of wool cell surge is immersed, and the temperature is raised from 40 ° C. to 100 ° C. over 60 minutes. After dyeing for 30 minutes at the same temperature, gradually cool to 80 ° C and add 1% potassium dichromate.
o. w. f. Was added, and after 10 minutes, the temperature was raised to 100 ° C,
Stain for a further 30 minutes. The dyed product was washed with water and dried to obtain a black dyed product. In the sweat-alkali fastness test, the dyed product thus obtained showed remarkable yellowish stain on the attached cloth (wool, 6 nylon).

Comparative Example 3 100 parts by weight of C.I. I. Mordant Black 11 and 17
A black dyed product was obtained in the same manner as in Example 1 except that a dye composition containing 1 part by weight of amidosulfonic acid was used. The dyed product thus obtained was found to have bluish stain on the attached cloth (wool, 6 nylon) in the sweat alkali fastness test.

Comparative Example 4 100 parts by weight of C.I. I. Moldant Black 11 and 43
A black dyed product was obtained in the same manner as in Example 1 except that a dye composition containing 1 part by weight of amidosulfonic acid was used. In the sweat-alkali fastness test, the dyed product thus obtained showed remarkable yellowish stain on the attached cloth (wool, 6 nylon).

The results of the above examples and comparative examples are shown in the following table.

[0015]

[Table 1]

[0016]

According to the present invention, in wool dyeing,
Good black hues Excellent wet fastness can be achieved without yellow bleed.

Claims (3)

[Claims] 1. A C.I. I. Moldant Black 11 and 2
A black mordant dye composition comprising an amount of amidosulfonic acid of more than 0% and less than 35% by weight. 2. The content of amidosulfonic acid is 22% by weight or more and 28
The black mordant dye composition according to claim 1, wherein the black mordant dye composition comprises an amount of not more than wt%. 3. A method for dyeing a natural protein fiber or a blend thereof, which comprises using the black mordant dye composition according to claim 1 or 2 and dyeing it under a condition that the final bath pH does not become 6 or less.