JP2000154466A - Processing agent for textile and method for processing textile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare a processing agent for textiles, showing excellent effect of removing oligomers when added to a dye bath after dyeing by including a sulfonation product of a specific polyoxyethylene styrylpheny ether and a polymer having carboxyl group (or its salt one). SOLUTION: This processing agent for textiles is prepared by including (A) an anionic surfactant including a sulfonation product of a polyoxyethylene styrylpheny ether of the formula [wherein, (n1) is 10-20; (n2) is 2-5; X is H, K, Na, Li or a quaternary ammonium] and (B) a polymer having carboxyl group (or its salt one), having 1,000-20,000 molecular weight and being e.g. poly(meth)acrylic acid (or its salt). The weight content ratio of (the ingredient A: the ingredient B) is (3-6):1. This method for processing textiles is to add the above processing agent to a dye bath during temperature-fall after dyeing polyester-based textiles or textile products including polyester-based textile up to the concentration of 1-5 g/L (when the dye bath is an aqueous solution mixed with an alkali) or 0.5-5 g/L (when the dye bath is an aqueous solution mixed with an acid) and to treat the dye bath at 60-140 deg.C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing agent and a processing method suitable for polyester fibers or fabrics containing polyester fibers.

[0002]

2. Description of the Related Art When treating fiber products such as polyester fibers or fabrics containing polyester fibers, minute impurities such as oligomers are generated, and these may cause processing defects such as uneven dyeing. Are known. As a technique for removing these contaminants, the present inventors have proposed a method of treating a polyester fiber product using a fiber treating agent comprising a cationic organic compound, an anionic nonionic activator, and a polymer containing a carboxyl group. Is described in JP-A-8-11
No. 3873 has previously proposed this. However, although this method shows a better oligomer removing effect than the previous method, there is a problem to be solved in that an acidic bath cannot provide a sufficient oligomer dispersing effect or foaming during processing is large. Was.

[0003]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems and provides a fiber treating agent having an excellent oligomer removing effect.
And a treatment method for effectively using the treatment agent.

[0004]

According to the present invention, there is provided an anionic surfactant containing a sulfonated polyoxyethylene styryl phenyl ether represented by the following general formula [I], a carboxyl group-containing polymer, And / or a carboxyl salt-containing polymer.

[0005]

Embedded image

However, n1: 10 to 20 n2: 2 to 5 X: H, K, Na, Li or quaternary ammonium In the fiber treating agent of the present invention, the compound represented by the general formula [I] and the carboxyl group The weight ratio of the polymer and / or the salt-containing polymer of the carboxyl group is 3 to
Preferably, it is 6: 1. The molecular weight of the carboxyl group-containing polymer or the carboxyl group salt-containing polymer is preferably about 1,000 to 20,000.

Further, the present invention provides a fiber for treating a polyester fiber or a fiber product containing the polyester fiber at 60 to 140 ° C. using the mixed aqueous solution of the fiber treating agent of the present invention and an alkali or an acid. Provide a processing method.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the substances used in the fiber treating agent of the present invention will be specifically described.

The fiber treating agent of the present invention has the general formula [I]
And an anion activator containing a sulfonated product of polyoxyethylene styryl phenyl ether represented by This anionic activator has the function of dispersing the oligomer and preventing insolubilization.

In the general formula [I], when n1 exceeds 20, the dispersibility increases, but the foaming also increases, which causes trouble during processing. When it is less than 10, bubbling can be suppressed, but dispersibility also decreases.
It is important that the range is zero. n2 is 2 to impart hydrophobicity corresponding to the oligomer to the anionic surfactant.
5 range. The compound represented by the general formula [I] is often obtained as a mixture in which both n1 and n2 have a certain distribution. In the present invention, n1 and n2 are represented by average values. Further, since the compound represented by the general formula [I] is sulfonated, it has excellent heat resistance, and a stable oligomer dispersion effect can be obtained even in the simultaneous dyeing treatment.

Further, the fiber treating agent of the present invention contains a carboxyl group-containing polymer, a carboxyl group salt-containing polymer, or both. These have the effect of stably dispersing the insolubilized oligomer and preventing reattachment to the fabric. Generally (CH ₂ CH ₂ )
In the polymer main chain represented by n, a carboxyl group (-CO
OH) and sodium carboxylate groups (—COON
a) is bonded as a side chain, and examples thereof include acrylic acid polymers, methacrylic acid polymers and salts thereof. Among them, the molecular weight range is from 1,000 to 20,000
Are particularly preferred.

The compounding ratio of the above-mentioned anionic activator and carboxyl group-containing polymer and / or carboxyl group salt-containing polymer is represented by the general formula [I The anionic surfactant represented by the formula [3] is preferably in the range of 3 to 6, since the dispersion stability of the oligomer in the mixed aqueous solution of alkali or acid is improved. If the ratio of the carboxyl group-containing polymer is too high, the effect of removing the oligomer is reduced.
If the ratio of the carboxyl group-containing polymer is too low, the dispersion stability of the oligomer in the acidic bath, which is one of the objects of the present invention, is lowered.

The fiber treating agent of the present invention is particularly suitable for treating polyester fibers or fiber products containing polyester fibers. Examples of the polyester fibers include polyethylene terephthalate, polybutylene terephthalate, polypropylene terephthalate, and polyester fibers modified by copolymerization or the like. Either short fiber or long fiber may be used. Fiber products containing polyester fibers include, for example, blended yarns, composite yarns, blended yarns, mixed knits, mixed weaves, and mixed nonwoven fabrics of polyester fibers and other natural fibers or synthetic fibers.
In particular, the effects of the present invention are great for fibers and fiber products composed of polymers having a structure in which oligomers are easily generated.

Next, a processing method using the fiber processing agent of the present invention will be described. For the treatment, a mixed aqueous solution of the fiber treating agent and an alkali or an acid is used.

When using a mixed aqueous solution with an alkali,
The alkali may be any alkaline substance such as caustic soda and soda ash, but caustic soda is preferred because of its great effect. The concentration of the fiber treating agent is preferably 1 to 5 g per liter of the dyeing solution, and more preferably 2 to 4 g per liter of the dyeing solution.

In the case of using a mixed aqueous solution with an acid, any acidic substance such as acetic acid and sodium acetate generally used in dyeing may be used. The concentration of the fiber treating agent is preferably 0.5 to 5 g per liter of dyeing solution in an acidic dyeing bath having a pH of 4 to 5 or less, and more preferably 1 to 2 g per liter of dyeing solution.

The treatment temperature may be in the range of 60 to 140 ° C. in the general dyeing process, but in the case of treatment with a mixed aqueous solution with an alkali, the treatment temperature is 80 to 140 ° C. in consideration of various physical properties of textiles and deterioration of hand. A range of 100 ° C. is preferred. At the time of addition of the fiber treating agent and the alkali mixed aqueous solution, it is preferable to add a predetermined amount to the dyeing solution when the temperature reaches the temperature during the temperature lowering after the dyeing process is completed, and to treat the mixed solution with an acid. When processing with, 60-140
The temperature may be in the range of ° C, and when the fiber treating agent is added, it may be before dyeing, during dyeing, or after dyeing.

[0018]

EXAMPLES In the examples, the amount of oligomer adhered after the treatment was measured by extracting a fiber surface oligomer of 1 g of a fiber cloth using methanol, drying the extract, dissolving a solid substance in chloroform, and performing liquid chromatography. Was used to measure the amount of the polyester trimer and tetramer, and this was taken as the amount of adhesion.

The visual judgment was carried out by taking an image using a scanning electron microscope to check the adhesion of oligomers present on the surface of the fiber cloth, and evaluated the following four steps.

A: There is no oligomer on the fiber surface.

：: Slightly adhered to the fiber surface.

Δ: Sparsely attached to the fiber surface.

X: Attached to the entire fiber surface.

The foaming properties in the examples are as follows:
During the processing, the following three stages were visually evaluated.

：: Almost no bubbling.

Δ: There is a little bubbling.

X: Foaming is large.

Example 1 Plain fabric using 50 denier-18 filaments polyethylene terephthalate yarn as the warp yarn and 75 denier 36 filaments polyethylene terephthalate yarn as the weft yarn (warp yarn density: 110 per inch, weft yarn density: 1 inch) Using a jet dyeing machine, 2.0 g per liter of the dyeing solution was added to the dyeing bath in the dyeing bath before the temperature was raised during the dyeing process, and the dyeing was performed at 130 ° C. did. Next, the woven fabric was washed with hot water in a usual manner, spread, dried at 130 ° C., and finished. The fiber treating agent includes polyoxyethylene styrylphenol ether sulfonate (n1 = 15, n2 = 4, X =
Na) and a carboxyl group-containing polymer having a molecular weight of 1
A mixture with 0000 acrylic acid polymer was mixed and used in the order described above at a weight ratio of 4: 1.

During processing, there was no problem due to foaming.
pm. Also, in the naked eye judgment using an electron microscope,
The adhesion of the oligomer to the fiber surface was slight, and the obtained woven fabric was excellent in quality without any defect due to the adhesion of the oligomer.

Comparative Example 1 Same as Example 1 except that the same polyester plain fabric used in Example 1 was not subjected to fiber treatment with a mixture of an anionic surfactant and an acrylic acid polymer having a carboxyl group-containing polymer. And dyed and finished.

The woven fabric thus obtained had an oligomer adhesion amount of 1110 ppm. In addition, in the naked eye judgment by an electron microscope, the oligomer was attached to the entire fiber surface, and the quality was rejected.

Comparative Example 2 The same polyester plain fabric as used in Example 1 was treated with a cationic organic compound octylpicolinium chloride (C ₁₄ H ₂₄ N ⁺ Cl ⁻ )
Same as Example 1, except that a mixture of nonionic activator polyoxyethylene styryl phenyl ether and sodium sulfonate of polyoxyethylene styryl phenyl ether and a carboxyl group-containing polymer having a molecular weight of 80,000 with acrylic acid polymer were used. It was added, dyed, washed with hot water, spread, and dried to finish.

During the processing, foaming was large and the amount of the processed oligomer was measured to be 990 ppm. In addition, in the naked eye judgment by an electron microscope, the oligomer was attached to the entire fiber surface, and the quality was rejected.

Example 2 The same polyester plain fabric used in Example 1 was subjected to ordinary dyeing at a dyeing temperature of 130 ° C. using a liquid jet dyeing machine, and then cooled. Keep the temperature constant at 80 ° C when cooling down,
The fiber treating agent having the same composition as that used in Example 1 was applied in the same ratio in the dyeing bath. At this time, 2.0 g of the fiber treating agent and 4.0 g of NaOH (30% aqueous solution) were added to the dye bath at a ratio of 1 g of the dyeing solution, and the dyed fabric was treated for 20 minutes. After the treatment, the woven fabric was washed with hot water, spread, and dried at 130 ° C. in a usual manner to finish.

During processing, there was almost no bubbling, and the amount of oligomer adhered to the processed fabric was measured to be 270 ppm.
Met. In addition, macroscopic evaluation by an electron microscope showed that there was almost no adhesion of the oligomer on the fiber surface, and the obtained woven fabric had no defect due to the adhesion of the oligomer and was of excellent quality.

Comparative Example 3 In place of the fiber treating agent of the present invention, the same polyester plain woven fabric used in Example 1 was replaced with a cationic organic compound octylpicolinium chloride (C
₁₄ H ₂₄ N ⁺ Cl ⁻ ), a mixture of anionic / nonionic activator polyoxyethylene styryl phenyl ether and sodium sulfonate of polyoxyethylene styryl phenyl ether, and an acrylic acid polymer having a carboxyl group-containing polymer having a molecular weight of 80,000. NaOH
Was added to the dyeing bath in the same manner as in Example 2, and the same treatment as in Example 2 was performed. After treatment, the fabric is washed with hot water in the usual way,
The fabric was spread, dried at 130 ° C., and finished.

During the processing, the foaming was large and the running of the cloth was unstable, but the oligomer adhesion amount of the processed woven cloth was measured to be 330 ppm. In addition, in the naked eye judgment by an electron microscope, the resulting fabric had almost no adhesion of the oligomer to the fiber surface, and the obtained woven fabric showed no defect due to the oligomer, but was rejected due to physical defects such as blurred eyes.

The processing results of Examples 1 and 2 and Comparative Examples 1 to 3 are summarized in Table 1.

[0039]

[Table 1]

[0040]

According to the present invention, oligomers generated when dyeing polyester fiber products are effectively dispersed in a dyeing bath to prevent re-adhesion to dyed goods. can get. In addition, running troubles due to bubbles, which were problematic in the conventional method, are reduced, and processing in an acidic dyeing bath is possible, so that simultaneous dyeing processing can be performed, reducing time and simplifying the process compared to the conventional method. become.

Claims (4)

[Claims] 1. An anionic surfactant containing a sulfonated polyoxyethylene styryl phenyl ether represented by the following general formula [I], a carboxyl group-containing polymer and / or
Or a fiber treating agent comprising a carboxyl group-containing polymer. Embedded image However, n1: 10 to 20 n2: 2 to 5 X: H, K, Na, Li or quaternary ammonium 2. The weight ratio of the compound represented by the general formula [I] to the carboxyl group-containing polymer and / or the carboxyl group-containing polymer is 3 to 6: 1. The fiber treating agent according to the above. 3. A carboxyl group-containing polymer or a carboxyl group-containing polymer having a molecular weight of 1,000 to 200.
The treating agent for fibers according to claim 1 or 2, wherein the number is 00. 4. A polyester fiber or a fiber product containing the polyester fiber is treated at 60 to 140 ° C. using an aqueous mixed solution of the fiber treating agent according to claim 1 and an alkali or an acid. A method for treating a textile product, comprising: