JPH0571082A - Bleaching and dyeing of fiber - Google Patents

Abstract

PURPOSE:To provide a one-bath scouring, bleaching and dyeing process for cotton cloth by simultaneously performing the scorching and bleaching of the cloth, dyeing the cloth in the same bath without discharging the bath and subjecting the dyed cloth to conventional washing and drying. CONSTITUTION:In the scouring and bleaching of a cotton cloth, a peracid is added together with conventional scouring agent and ion-sequestering agent to a bath and the bath is heated to effect the scouring and bleaching of the cloth. A halogenic acid salt is added to the same bath to effect the complete decomposition of the peracid, a reactive dye is added to the bath and the cloth is dyed by conventional method. A number of washing and neutralizing steps necessary in conventional process after the scouring and bleaching process and before the dyeing process become unnecessary in the present process to enable the reduction of time and energy.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a bleaching and dyeing method for fibers.

[0002]

2. Description of the Related Art Dyeing of cellulose fibers such as cotton, hemp and rayon is performed by scouring for obtaining a sharpness and then using a chlorine-based or oxygen-based bleaching agent such as sodium hypochlorite and hydrogen peroxide. The steps of performing bleaching under exposure, reducing, neutralizing or washing with water to remove the bleaching agent, and then dyeing are usually performed. And this method requires a great deal of time and energy for the under-exposure and removal of the bleaching agent and the soaping step after dyeing with the reactive dye.

[0003]

The bleaching effect is obtained by bleaching the fiber before dyeing with the reactive dye, and the process is simplified by dyeing in the same bath.
There is a need for new methods and bleach dyes for fibers in order to shorten the process and to make this possible.

[0004]

The present inventors have already found a bleaching agent capable of bleaching only a color consisting of impurities in fibers without destroying the dye, and applied for a patent as a dyeing bleaching agent and a dyeing bleaching method. (Japanese Patent Application No. 2-325442), the dyes that can be used in the method described in this patent are limited.

Before the dyeing, if the bleaching agent is completely removed, the effect of the bleaching agent disappears, and there is no limit to the dyes that can be used, and the steps of dyeing in the same bath, removing the bleaching solution, and washing the bleaching agent are carried out. As a result of earnest research that it can be omitted and rationalized, the inventors have found that this object can be achieved by a combination of a specific dye bleaching agent and a specific additive, and arrived at the present invention.

That is, the present invention comprises the following (1) and (2). (1) When dyeing the fiber, bleaching with a bleaching agent consisting of an organic peracid represented by the following general formula (1) or a salt or complex thereof, and then using a salt represented by the following general formula (2) A bleaching and dyeing method for fibers, which is characterized by decomposing a bleaching agent and subsequently dyeing without discharging the bath after bleaching. General formula (1)

[0007]

[Chemical 2]

(Wherein R is a substituted or unsubstituted alkyl group, an allyl group or an aralkyl group, n is a natural number of 1 to 6) General formula (2) R ¹ X (where R ¹ is a metal ion or (This represents a substituted or unsubstituted quaternary ammonium group, and X represents a halogen ion.)

(2) The bleaching dyeing method for fibers according to (1), wherein the fibers are cellulose fibers alone or mixed with other fibers.

Specific examples of the organic peracids represented by the general formula (1) or salts thereof (metal salts or ammonium salts) which are the dye-bleaching agents for fibers of the present invention include performic acid, peracetic acid, perpropionic acid and Chloracetic acid, pertrifluoroacetic acid, perbutyric acid, percaprylic acid, perlauric acid, dipersuccinic acid, diperglutaric acid, diperadipic acid, monopernonanedioic acid, dipernonanedioic acid, monoperdecane. Diacid, diperdecanedioic acid, monoperdodecanedioic acid, diperdodecanedioic acid, monoperundecanedioic acid, diperundecanedioic acid, diperphthalic acid, diperterephthalic acid, perbenzoic acid, m-chloro Perbenzoic acid,
2,4-dichloroperbenzoic acid, monoperphthalic acid, magnesium monoperphthalate, monopersuccinic acid, magnesium monopersuccinate, monopermaleic acid, calcium monopermaleate, monoperglutaric acid, monoperglutal Magnesium acid, pertrimellitic acid, perpyromellitic acid and the like can be mentioned. Particularly preferred are magnesium monoperphthalate and diperdodecanedioic acid.

The concentration of the bleaching agent in the bleaching bath is preferably 0.05 to 10% owf, particularly preferably 0.3 to 5% owf in terms of the amount of effective active oxygen.

The pH is preferably 1-14, particularly preferably 2-10. The temperature of the bleaching bath is preferably 20 to 1
The temperature is particularly preferably 10 ° C and 40 to 90 ° C.

The metal which becomes the metal ion of the salt decomposing the bleaching agent is sodium, potassium, lithium, copper, aluminum, magnesium, calcium, zinc, barium,
The substituted or unsubstituted quaternary ammonium group of the salt that decomposes the bleaching agent is tin, iron, cobalt, nickel, etc., and examples thereof include an ammonium group, a monomethylammonium group, a dimethylammonium group, a trimethylammonium group, a tetramethylammonium group, and a monomethylammonium group. It is an ammonium group such as an ethylammonium group, a diethylammonium group, a triethylammonium group, a monomethyltriethylammonium group and a tetraethylammonium group, and an ammonium group which may be substituted with a higher alkyl group, an allyl group or an aralkyl group. The halogen ion of the salt that decomposes the bleach is fluoride ion, chlorine ion, bromine ion,
It is an iodine ion. Also, the salt of a quaternary ammonium group and a halogen ion may be made from a substituted or unsubstituted amine and a halogen acid. Particularly preferred salts are common salt, potassium bromide, ammonium chloride and the like.

In decomposing the bleaching agent, the concentration of the salt used is 0.05 to 10% by weight, particularly preferably 0.3 to 5% by weight.

When decomposing the bleaching agent, the temperature used is 20 to 110 ° C, particularly preferably 40 to 90 ° C.

The dyes applicable to the present invention include various dyes which are generally commercially available, and reactive dyes are particularly preferable, and the amount used and the dyeing method are carried out according to the summary standard of those commercially available products. Examples of representative reactive dyes include cocoyone (Nippon Kayaku), remazole (Hoechst), procion (ICI), diamira (Mitsubishi Kasei), selmazole (Mitsui Toatsu Chemical), Sumifix (Sumitomo Chemical), Cibacron. (CIBA), Levafix (Bayer), Fixazole (Daito Kagaku) and the like.

The bleaching agent and the salt that decomposes the bleaching agent of the present invention are preferably pH adjusters for maintaining the pH at the time of use in the optimum pH range of the active ingredient, such as acetic acid, sodium metasilicate, sodium carbonate or sodium hydrogen carbonate. Is 0
40%, a metal ion sealant for suppressing the catalytic decomposition of the active ingredient by metal ions in water, for example, Kayachelator C
-1000, ethylenediaminetetraacetic acid or Dequest 2010 (manufactured by Mitsubishi Monsanto Kasei Co., Ltd.) is preferably 0 to 1%, a dyeing aid such as sodium chloride or sodium sulfate is preferably 0 to 98%, and handling and stability are improved. A diluent for use such as water, an organic solvent, Celite or ultrafine particulate anhydrous silica can be preferably contained in an amount of 0 to 100 parts with respect to 1 part of the bleaching agent and / or 1 part of the salt decomposing the bleaching agent.

The bleaching agent and the salt decomposing the bleaching agent of the present invention can be in any form such as a solution, suspension, paste or powder depending on the dyeing method.

[0019]

[Working] If the dye bleaching agent of the present invention and a salt decomposing the bleaching agent are used, the bleaching is performed before dyeing and bleaching the fiber, and the bleaching agent is decomposed after the bleaching, thereby eliminating the discharge operation or the rinse operation. It is possible to dye. It is possible to obtain a bleaching effect equal to or higher than that of the usual method of dyeing after bleaching.

[0020]

EXAMPLES Examples will now be shown in order to more fully understand the present invention, but these examples are for the purpose of illustration and not for limiting the present invention.

First, in Example 1, the bleaching agent of the present invention was compared with hydrogen peroxide (Comparative Example 1-1) and sodium hypochlorite (Comparative Example 1-2), which are the most common bleaching agents. Was evaluated for its effect on bleaching ability and dyeing.

In Example 2, an example using a dye of another genus was shown. Examples of mixed spinning are shown in Examples 3 to 4.

Example 1. An undyed cotton cloth which has not been exposed after scouring (hereinafter referred to as an undyed cloth) is firstly put in a bath having the composition shown in Examples 1-1 to 4 below.
It was treated at a temperature of ° C for 20 minutes and bleached. Then, add 10 g / l of salt without discharging the bath and raise the temperature to 90 ° C.
It was processed for 0 minutes. Further, without discharging the bath, the temperature was lowered to 80 ° C., a dye and an anhydrous sodium sulfate among the following dyeing agents were added, and the mixture was treated at the same temperature for 10 minutes. Subsequently, sodium carbonate was added and dyeing was carried out at the same temperature for 1 hour. Rinse after dyeing,
Then, it was washed with soapy water at 98 ° C. for 15 minutes. The ratio of fiber to bleaching bath and dyeing bath in the bath is 1:15.

Kayashion Blue E-CN 2% o. w. f. Anhydrous sodium sulfate 100 g / l Sodium carbonate 20 g / l

Example 1-1 Sodium metasilicate 4 g / l Sodium carbonate 20 g / l Kayachelator C-1000 10 g / l (Nippon Kayaku Co., Ltd. metal ion sealant) 40% peracetic acid 2 g / L

Example 1-2 Sodium metasilicate 4 g / l Kayachelator C-1000 10 g / l 27% diperdodecanedioic acid 2.3 g / l

Example 1-3 Sodium metasilicate 4 g / l Kayachelator C-1000 10 g / l H-48 15.6 g / l (Nippon Peroxide Co., Ltd. magnesium monoperphthalate, available oxygen 4. 9%)

Examples 1-4 Sodium metasilicate 4 g / l Kayachelator C-1000 10 g / l Perbenzoic acid 1 g / l

Comparative Example 1. The undyed cloth was bleached under the same conditions as in Example 1 in a bleaching bath having the compositions shown in Comparative Examples 1-1 and 1-2, as in Example 1. Subsequently, using the same dyeing agent as in Example 1, dyeing treatment was performed under the same conditions as in Example 1.

Comparative Example 1-1 Sodium metasilicate 4 g / l Sodium carbonate 20 g / l Kayachelator C-1000 10 g / l 30% hydrogen peroxide 2.7 g / l

Comparative Example 1-2 12% sodium hypochlorite 0.9 g / l

Comparative Example 2. The undyed cloth was bleached under the same conditions as in Example 1-2, and subsequently dyed under the same conditions as in Example 1 using the same dyeing agent as in Example 1 without performing salt treatment at 90 ° C. Treated. (Japanese Patent Application 2-3
This corresponds to the method of 25442. )

[0033] Bleaching ability ○: Sufficient bleaching ability △: Inadequate bleaching ability ×: Almost no bleaching ability × ×: No bleaching ability Sharpness ○: Practical use △: Slight discoloration ×: Significant discoloration × X: There is remarkable discoloration

Comparative Example 3. The undyed fabric is first bleached by treating it at a temperature of 80 ° C. for 20 minutes in a bath having the following composition: Sodium metasilicate 4 g / l Sodium carbonate 20 g / l Kayachelator C-1000 10 g / l 30% hydrogen peroxide 2.7 g / l After bleaching, the bath is drained and the fiber material is carefully rinsed with cold water, Then, it was treated for 10 minutes at a temperature of 80 ° C. in a bath containing a dye and an anhydrous sodium sulfate among the following dyeing chemical compositions. Subsequently, sodium carbonate was added and dyeing was carried out at the same temperature for 1 hour.

Kayashi On Blue E-CN 2% o. w. f. Anhydrous sodium sulfate 100 g / l Sodium carbonate 20 g / l After dyeing, it was rinsed and then washed with soapy water at 98 ° C. for 15 minutes. The ratio of fiber to bleaching bath and dyeing bath is 1:15. The usual excellent dyeings were obtained.

Example 2. The undyed fabric was first bleached by treating it for 30 minutes at a temperature of 80 ° C. in a bath having the composition given in Examples 2-1 to 3 below. Subsequently, 10 g / l of potassium bromide (KBr) was added without draining the bath, and 9
The temperature was raised to 0 ° C. and the treatment was performed for 20 minutes. Subsequently, the bath was discharged to 60 ° C. without discharging it, and a dye and anhydrous sodium sulfate were added to the following dyeing agents and the mixture was treated at the same temperature for 10 minutes.
Subsequently, crystalline trisodium phosphate was added and dyeing was carried out at the same temperature for 1 hour. After dyeing, it was washed carefully with water, dried in the shade and dried.
The ratio of fiber in the bath to bleaching bath and dyeing bath is 1:15
Is. Diamira Turkis Blue G 2% o. w. f. Anhydrous sodium sulfate 50 g / l Crystalline trisodium phosphate 20 g / l

Example 2-1 Sodium metasilicate 4 g / l Sodium carbonate 20 g / l Kayachelator C-1000 10 g / l 40% peracetic acid 2 g / l

Example 2-2 Sodium metasilicate 4 g / l Kayachelator C-1000 10 g / l 27% diperdodecanedioic acid 2.3 g / l

Example 2-3 Sodium metasilicate 4 g / l Kayachelator C-1000 10 g / l H-48 15.6 g / l

Comparative Example 4. The undyed cloth was bleached under the same conditions as in Example 2 in a bleaching bath having the composition shown in Comparative Example 4-1 and Comparative Example 4-2 as in Example 2. Subsequently, the same dyeing agent as in Example 2 was used, and dyeing treatment was performed under the same conditions as in Example 2.

Comparative Example 4-1 Sodium metasilicate 4 g / l Sodium carbonate 20 g / l Kayachelator C-1000 10 g / l 30% hydrogen peroxide 2.7 g / l

Comparative Example 4-2 12% Sodium Hypochlorite 0.9 g / l Bleaching ability ○: Sufficient bleaching ability △: Inadequate bleaching ability ×: Almost no bleaching ability × ×: No bleaching ability Sharpness ○: Practical use Δ: Slight discoloration ×: Significant discoloration × X: There is remarkable discoloration

Example 3 A 50:50 blended fabric of undyed cotton and acrylic (hereinafter referred to as undyed acrylic blended fabric) is first of all in a bath of the following dyeing agent composition at 98 ° C. for 1 hour. Stained. Kayacryl light blue 4GSL-ED 1% o. w. f. Acetic acid 0.5 g / l

Next, the temperature was lowered to 80 ° C. without discharging the bath, and the mixture was treated at a temperature of 80 ° C. for 20 minutes in a bath having the composition shown in the following Examples 3-1 to 3 to bleach. Subsequently, add 10 g / l of salt without discharging the bath, and the temperature is 90 ° C.
The temperature was raised to 20 ° C. and treated for 20 minutes. Subsequently, the bath was discharged to 80 ° C. without discharging, and the following dyeing agents, dye and anhydrous sodium sulfate were added, and the mixture was treated at the same temperature for 10 minutes. Subsequently, sodium carbonate was added and dyeing was carried out at the same temperature for 1 hour. Kayashi Onturkis EA 1% o. w. f. Anhydrous sodium sulfate 100 g / l Sodium carbonate 20 g / l After dyeing, washing with water, then 80 ° C. demol N 2 g / l
It was washed in a bath (product of Kao Corporation) for 15 minutes. The ratio of fiber to bleaching bath and dyeing bath in the bath is 1:15.

Example 3-1 Sodium metasilicate 4 g / l Sodium carbonate 20 g / l Kayachelator C-1000 10 g / l 40% peracetic acid 2 g / l

Example 3-2 Sodium metasilicate 4 g / l Kayachelator C-1000 10 g / l 27% diperdodecanedioic acid 2.3 g / l

Example 3-3 Sodium metasilicate 4 g / l Kayachelator C-1000 10 g / l H-48 15.6 g / l

Comparative Example 5. Undyed acrylic blended fabric was dyed with Kayacryl Light Blue 4GSL-ED as in Example 3, and the same conditions as in Example 3 were applied in a bleaching bath having the composition shown in Comparative Examples 4-1 and 4-2. Bleached. Subsequently, using the same dyeing agent as in Example 3, dyeing treatment was performed under the same conditions as in Example 3.

Comparative Example 5-1 Sodium metasilicate 4 g / l Sodium carbonate 20 g / l Kayachelator C-1000 10 g / l 30% hydrogen peroxide 2.7 g / l

Comparative Example 5-2 12% Sodium hypochlorite 0.9 g / l Bleaching ability ○: Sufficient bleaching ability △: Inadequate bleaching ability ×: Almost no bleaching ability × ×: No bleaching ability Sharpness ○: Practical use Δ: Slight discoloration ×: Significant discoloration × X: There is remarkable discoloration

Example 4. A 50:50 blended fabric of undyed cotton and polyester (hereinafter referred to as undyed polyester blended fabric) was first dyed in a pressure vessel at 130 ° C. for 1 hour in a bath having the following dyeing agent composition. Kayaceron Turkis E-GL 1% o. w. f. Acetic acid 0.45 g / l Sodium acetate (trihydrate) 0.55 g / l

Next, the temperature of the bath was lowered to 80 ° C. without discharging it, and the mixture was treated at a temperature of 80 ° C. for 20 minutes in a bath having the composition shown in the following Examples 4-1 to bleaching. Subsequently, add 10 g / l of salt without discharging the bath, and the temperature is 90 ° C.
The temperature was raised to 20 ° C. and treated for 20 minutes. Subsequently, the bath was discharged to 80 ° C. without discharging, and the following dyeing agents, dye and anhydrous sodium sulfate were added, and the mixture was treated at the same temperature for 10 minutes. Subsequently, sodium carbonate was added and dyeing was carried out at the same temperature for 1 hour. Kayashi Onturkis EA 1% o. w. f. Anhydrous sodium sulfate 100 g / l Sodium carbonate 20 g / l After dyeing, it was washed with water and then with soapy water at 98 ° C. for 15 minutes. The ratio of fiber to bleaching bath and dyeing bath in the bath is 1:
It is 15.

Example 4-1 Sodium metasilicate 4 g / l Sodium carbonate 20 g / l Kayachelator C-1000 10 g / l 40% peracetic acid 2 g / l

Example 4-2 Sodium metasilicate 4 g / l Kayachelator C-1000 10 g / l 27% Diperdodecanedioic acid 2.3 g / l

Example 4-3 Sodium metasilicate 4 g / l Kayachelator C-1000 10 g / l H-48 15.6 g / l

Comparative Example 6. The undyed polyester blended fabric is first placed in a pressure resistant container in a bath of the following dyeing agent composition.
Staining was performed at 0 ° C for 1 hour. Kayaceron Turkis E-GL 1% o. w. f. Acetic acid 0.45 g / l Sodium acetate (trihydrate) 0.55 g / l Then, the temperature was lowered to 80 ° C. without discharging the bath, and Comparative Example 5-1 and Comparative Example 5-2 were carried out similarly to Example 4. Bleaching was performed under the same conditions as in Example 4 in a bleaching bath having the composition shown. Subsequently, using the same dyeing agent as in Example 4, dyeing treatment was performed under the same conditions as in Example 4.

Comparative Example 6-1 Sodium metasilicate 4 g / l Sodium carbonate 20 g / l Kayachelator C-1000 10 g / l 30% hydrogen peroxide 2.7 g / l

Comparative Example 6-2 12% sodium hypochlorite 0.9 g / l Bleaching ability ○: Sufficient bleaching ability △: Inadequate bleaching ability ×: Almost no bleaching ability × ×: No bleaching ability Sharpness ○: Practical use Δ: Slight discoloration ×: Significant discoloration × X: There is remarkable discoloration

[0059]

The use of the dye bleaching agent of the present invention reduces the number of discharge operations and / or washings conventionally required between the fiber bleaching step and the dyeing step, and saves the amount of heat for water and heating. Save time for cleaning and / or draining,
You can get the improvement about water treatment.

Claims (2)

[Claims] 1. When dyeing a fiber, the following general formula (1) is used.
Bleaching with a bleaching agent consisting of an organic peracid represented by or a salt or complex thereof, followed by decomposing the bleaching agent with a salt represented by the following general formula (2), without discharging the bath after bleaching, A bleaching dyeing method for fibers, which is characterized by the subsequent dyeing. General formula (1) (However, R is a substituted or unsubstituted alkyl group, an allyl group, or an aralkyl group, and n is a natural number of 1 to 6.) General formula (2) R ¹ X (wherein R ¹ is a metal ion or substituted or non-substituted) (This represents a substituted quaternary ammonium group, and X represents a halogen ion.) 2. The bleaching dyeing method for fibers according to claim 1, wherein the fibers are cellulose fibers alone or mixed with other fibers.