JP3345150B2 - Dye composition and dyeing method using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-soluble reactive dye composition and a method for dyeing fibers using the same. More specifically, the present invention relates to a method for dyeing cellulose fibers and nitrogen-containing fibers with light fastness, fastness to sweat and sunlight, and fastness to chlorine. The present invention relates to a reactive dye composition which dyes a blue color excellent in degree and has good levelness and alkali solubility.

[0002]

2. Description of the Related Art Water-soluble reactive dyes are usually used for dyeing cellulose fibers and nitrogen-containing fibers. In recent years, among these dyes, there are various fastnesses, particularly light fastness, sweat fastness and chlorine fastness. There is an increasing demand for blue dyes which are excellent in alkali solubility and which can perform reaction / reaction coloring prevention discharge printing in printing. However, at present, a blue-based reactive dye that can satisfy all of these points has not been found. For example, in the form of a free acid, the following general formula [A-III]

[0003]

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The blue reactive dye represented by C.I. I. Rea
Known as active Blue 19, this dye has excellent light fastness, sweat fastness and build-up properties, but it does not have sufficient chlorine fastness, leveling properties and alkali solubility. On the other hand, the following structural formula [BI] described in JP-A-59-230063

[0005]

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The blue-based reactive dye represented by
Inadequate levelness, fastness to alkali dissolution and fastness to sweat and sunlight. This tendency is particularly strong in the light-color field.

[0007]

SUMMARY OF THE INVENTION In view of the above circumstances, the present inventors have found that light fastness, sweat-sunlight fastness, chlorine fastness, excellent levelness and alkali solubility, and a reaction in printing. / As a result of intensive studies with the aim of obtaining a blue dye capable of reactive coloring and preventing discharge, it was found that the object of the present invention could be achieved by blending specific dyes in a predetermined amount, and completed the present invention. did.

[0008]

The gist of the present invention is to provide the following general formula [A] in the form of a free acid.

[0009]

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(Wherein X represents a —CH ＝ CH ₂ group or —CH
₂ CH ₂ W group (W represents a group which is eliminated by the action of an alkali) and a blue-based reactive dye represented by the formula: The following general formula [B]

[0011]

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(Wherein X is X in the general formula [A])
Has the same significance as The present invention relates to a water-soluble reactive dye composition containing a blue reactive dye represented by the formula (1) and a method for dyeing fibers using the same. Hereinafter, the present invention will be described in detail.

In the general formulas [A] and [B] of the present invention, the group which is eliminated by the action of an alkali represented by -C ₂ H ₄ W is usually -OSO ₃ H, -S
Examples thereof include an acid ester group such as a SO ₃ H group, a —OPO ₃ H ₂ group, and a —OCOCH ₃ group, or a halogen atom, and a —OSO ₃ H group is typical. In the present invention, the water-soluble reactive dyes represented by the general formulas (A) and (B) are each present in the form of a free acid or a salt thereof, and as the salt, usually, a lithium salt, a sodium salt, a potassium salt, Alkali metal or alkaline earth metal salts such as calcium salts are preferred.

The water-soluble reactive dyes represented by the above general formulas [A] and [B] can be produced according to a known method, and the production method is not particularly limited. Specifically, the dye represented by the general formula [A] is C.I. I. The dye represented by the general formula [B] can be produced according to the method for producing Reactive Blue 19, and according to the method described in JP-A-59-230063.

The reactive dye composition of the present invention has the general formula [A]
And 0.05 to 0.5 times, preferably 0.08 to 0.4 times, particularly preferably 0.1 to 0.3 times the weight of the dye represented by the general formula [B And the dyes represented by the formula If the mixing ratio is too large or too small, the effect of the present invention cannot be expected. Further, the dye represented by the general formula [A] is represented by the following [AI] and [A-II]

[0016]

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[0017]

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(Wherein X has the same meaning as X in the general formula [A]), wherein the mixture ratio is 60 to 95% by weight: 40 to 5% by weight, Particularly preferably, when the content is 75 to 90% by weight: 25 to 10% by weight, the leveling property and alkali solubility are further excellent.

The reactive dyes represented by the general formulas [A] and [B] may be mixed in advance or may be mixed at the time of dyeing. If necessary, inorganic salts such as anhydrous sodium sulfate, dispersant,
A pH buffer, a dust scattering preventive, and other dyeing auxiliaries can be contained. In order to adjust the hue, other reactive dyes of yellow, red and blue may be blended in a range of 20% by weight or less based on the mixture.

The fibers which can be dyed with the dye mixture of the present invention usually include cellulose fibers such as cotton, viscose rayon, cupraammonium and hemp.
These fibers may be in the form of a mixed fiber with, for example, polyester fiber, triacetate fiber or polyacrylonitrile fiber. The dye mixture of the present invention can be applied to various known dyeing methods. Usually, it is effective for exhaust dyeing, cold pad batch method, pad steam method and other various printing methods.

When exhaustion dyeing cellulose fibers using the dye composition of the present invention, an acid binder consisting of an inorganic alkali such as sodium bicarbonate or sodium carbonate or an organic base such as triethylamine is usually used to neutralize the cellulose fiber. For example, mirabilite or salt is added for staining. At this time, the amount of neutral salt added is 20
染色 50 g / liter, and the dyeing temperature is 50-60 ° C.
Is preferred.

The dyeing of synthetic and natural polyamide and polyurethane fibers is first carried out from an acidic to weakly acidic dye bath.
This is effected by controlling the value to exhaust and then changing to a neutral and possibly alkaline pH value for fixation. Dyeing is usually performed at a temperature of 60 to 120 ° C. When dyeing cellulose fibers according to the padding method, the dyeing liquor is padded at room temperature or at an elevated temperature, dried, and then fixed by steaming or dry heat.

When printing on cellulose fibers,
In one phase, for example by printing a printing paste containing baking soda or other acid binders and then by steaming at 100-160 ° C. or in two phases, for example by printing a neutral or weakly acidic printing paste, This is carried out by passing it through a hot electrolyte-containing alkaline bath, or by over-padding the alkaline electrolyte-containing padding solution, and steaming or heat-treating it.

In the printing paste, for example, sodium alginate or starch ether and other emulsifiers are used as a sizing agent, and if necessary, a usual printing aid or dispersant such as urea is used. As described above, the dye composition of the present invention is particularly suitable for dyeing a cellulose fiber material. In particular, it is possible to provide a blue-based dyed material having excellent light fastness, sweat-sunlight fastness, and chlorine fastness. In addition, the following structural formula [C-I] which is the same H acid-based disazo dye as the dye represented by the general formula [B] used in the present invention.

[0025]

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C. indicated by I. Reactive B
Lack 5 has insufficient chlorine fastness and also has the following structural formula [C-II]

[0027]

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The dyes described in JP-B-3-40068 are too fast to fix in dyeing dyeing compared to the dyes represented by the general formula [A], and are not only concerned with leveling properties, but also have a problem in reaction / reaction. It is interesting that anti-dyeing, color-proof, discharge-discharge is not possible.

[0029]

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples. Example 1 The following structural formula [A-III]

[0030]

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30 g of the anthraquinone dye represented by the following structural formula [BI]

[0032]

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4 g of the disazo reactive dye represented by the formula was blended to obtain a dye composition. 0.05 g of this composition was added to 200 parts of water.
Then, 10 g of Glauber's salt was added to prepare a dye bath. Soak 10 g of non-mercerized cotton cloth,
The temperature was raised to ° C. Next, 4 g of sodium carbonate was added and 60 g of sodium carbonate was added.
Stained for 1 hour at ° C. Subsequently, washing with water, soaping, washing with water and drying were performed to obtain a blue dyed material having good levelness.

[0034]

Table 1 This dyed fabric was evaluated for the following fastness, and the results are summarized in Table 1. Light fastness JIS L 0842 40 hours irradiation Sweat sunlight fastness JIS A888 Method A Alkaline artificial sweat liquid is used. However, the amount of histidine used was 10 times. Chlorine fastness JIS 0884 (chlorine concentration 20pp
m) Leveling properties The dyed fabric was evaluated by visual impression ◎ Excellent ○ Leveling and no practical problem △ Somewhat poor

Examples 2 and 3 The procedure of Example 1 was repeated except that the mixing ratio and the amount of the dye composition were changed as shown in Table 1. Table 1 shows the obtained results.

Comparative Examples 1 to 3 In the method of Example 1, the structural formulas [A-III] and [B-
I] Table 1 shows the mixing ratio and the amount of the dye composition alone and
And the same method as in Example 1 was performed. Table 1 shows the obtained results.

[0037]

[Table 2]

Embodiment 3

[0039]

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80 g of the dye represented by

[0041]

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20 g of the dye represented by

[0043]

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A dye composition was obtained by blending 15 g of the dye represented by the formula (1). 60 g of this dye composition is added to hot water 700
Dissolve in ml and cool to 25 ° C. To this, 5.5 g of a 32.5% aqueous sodium hydroxide solution and 150 g of 50 ° beaume water glass were added, and water was further added to bring the total amount to 1000 g at 25 ° C. Immediately afterwards, this liquid was used as a padding liquid to pad cotton fabric. Then, it is sealed with a rolled-up polyethylene film and stored in a room at 20 ° C. for 20 hours. Thereafter, the dyed product was washed with cold water, then with hot water, soaped in a boiling soaping bath, further washed with cold water and dried to finish. As a result, a blue dyed material having good levelness was obtained. This is due to the excellent dissolution in alkaline water. In addition, the light fastness was 5th grade, the sweat and sunlight fastness was 5th grade, and the chlorine fastness was 4th grade.

Example 4 A cotton fabric was dyed with a dye solution having the following ground color formulation, squeezed to a squeezing ratio of 70%, and intermediately dried at 100 ° C. for 2 minutes. Next, the printing paste of the following coloring prescription was overprinted in a polka dot pattern by a flat screen, dried at 100 ° C. for 2 minutes, treated with high-temperature steam at 175 ° C. for 7 minutes, and then washed in an alkaline bath shown below.
Alkaline fixation treatment was performed at 0 ° C. for 15 seconds, followed by washing and soaping. As a result, a colored anti-dyeing product having a yellow polka dot pattern on a uniform blue base was obtained.

[0046]

Table 3 Ground color formulation Dye composition of Example 1 50 g Sodium m-nitrobenzenesulfonate (reducing inhibitor) 1 g Sodium tripolyphosphate (sequestering agent) 1 g Citric acid 3 g Water 945 g ─────────────────────── 1000g

[0047]

Table 4 Differential color prescription Diaclon Yellow 5G 60 g (monochlorotriazinyl-based reactive dye manufactured by Mitsubishi Kasei Hoechst Co., Ltd.) Anhydrous sodium carbonate 30 g CH ₃ O- (C ₂ H ₄ O) ₄ -CH ₃ 50 g Registol HWS 30 g (Vinylsulfone-based reactive dye anti-discharge printing agent manufactured by Meisei Chemical Co., Ltd.) Nikka Gum MA39 12% aqueous solution 540 g (CMC-based glue manufactured by Nikka Chemical Co., Ltd.) Water 210 g ────────────────── 1000g

Example 5 In Example 1, the following structural formula was used instead of the dye represented by the structural formula [A-III].

[0049]

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The dye represented by the following formula [B-
I] is replaced by the following structural formula

[0051]

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The dyeing was carried out in the same manner as in Example 1 except that the dyes shown in the following were used. As a result, the same result as in Example 1 was obtained.

[0053]

According to the present invention, there is provided a reactive dye which dyes cellulose fibers and nitrogen-containing fibers in a blue color excellent in light fastness, sweat fastness, chlorine fastness, levelness and alkali solubility. Can be. Further, the dye composition of the present invention is suitable for reaction / reaction coloring prevention discharge printing.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takumi Fujie 1-1, Kurosaki Castle Stone, Yahata-Nishi-ku, Kitakyushu-shi Technical Center, Mitsui Kasei Hoechst Co., Ltd. (56) References JP-A-59-230063 (JP, A) JP-A-6-107962 (JP, A) JP-A-2-99564 (JP, A) JP-A-60-500720 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) C09B 67/22 C09B 62/513 CA (STN) REGISTRY (STN)

Claims (4)

(57) [Claims] 1. A compound represented by the following general formula [A] in the form of a free acid: [Wherein, X represents a —CH ＝ CH ₂ group or a —CH ₂ CH ₂ W group (W represents a group that is eliminated by the action of an alkali.)] In the form of a free acid 0.05 to 0.5 times by weight of the following general formula [B]: (Wherein X has the same meaning as X in formula [A]). A water-soluble reactive dye composition comprising a blue reactive dye represented by the formula: 2. The blue reactive dye represented by the general formula [A] is converted into a free acid in the form of the following general formulas [AI] and [AI].
I] (Wherein X has the same meaning as described above), wherein the mixture ratio is 60 to 95% by weight: 40 to 5% by weight. 1
A water-soluble reactive dye composition as described in the above. 3. The following general formula [A] in the form of a free acid: [Wherein, X represents a —CH ＝ CH ₂ group or a —CH ₂ CH ₂ W group (W represents a group that is eliminated by the action of an alkali.)] In the form of a free acid 0.05 to 0.5 times by weight, the following general formula [B]: (Wherein, X has the same meaning as described above.) A method for dyeing fibers, comprising using a water-soluble reactive dye composition obtained by blending a blue reactive dye represented by the formula: 4. A blue-based reactive dye represented by the general formula [A] is converted into a free acid form by the following general formulas [AI] and [AI].
I] (Wherein X has the same meaning as described above), which is a water-soluble reactive dye composition having a mixing ratio of 60 to 95% by weight: 40 to 5% by weight. The dyeing method according to claim 3, wherein