JPS5838551B2 - The time has come to change. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a melt-resistant processing method for synthetic fibers, and more specifically, the present invention relates to a melt-resistant processing method for synthetic fibers. This invention relates to a method for simultaneously imparting hydrophilicity.

Synthetic fibers such as polyester fibers, polyamide fibers, and acrylic fibers each have various excellent physical and chemical properties, and are widely used as raw materials and industrial materials.

However, all of these synthetic fiber products have a common drawback: they instantly melt (or decompose) and become punctured when they come into contact with a high-temperature heat source, such as a cigarette or a stove chimney.

In order to improve these basic drawbacks of synthetic fibers, many studies have been conducted to modify them through post-processing.

For example, as a processing method to impart melt resistance to synthetic fibers,
The inventor has already discovered that melamine derivative compounds and tetrakis
An aqueous solution containing hydroxymethyl phosphonium chloride or a melamine derivative compound and propane sultone is deposited and then steamed to impart permanent hydrophilicity or permanent hydrophilicity and permanent melting resistance to the synthetic fiber at the same time. finding a way to do it.

However, when colored synthetic fibers are processed in this way to obtain melt-resistant processed products, the following major problems occur, and it has been found that it is extremely difficult to commercialize the products.

That is, in order to impart melt resistance equal to or higher than that of natural fibers such as cotton and wool, the amount of melamine derivative compound added to the fiber is 10%.
It is necessary to carry out a steam treatment after depositing more than wt% of the melamine derivative compound, and if such a large amount of melamine derivative compound is deposited and then steam treated, the resin film formed on the fiber surface will become uneven and non-smooth. A large amount of resin compound is generated between the fibers,
A part of the resin compound firmly adheres to the fibers and cannot be easily removed by scouring using ordinary scouring agents or organic solvents, resulting in whitening of the hue of colored fibers and thickening (decreasing) of color development and sharpness. This makes it extremely difficult to commercialize the product.

In contrast, 5 to 0.1 wt% of melamine derivative compound
If the product is steam-treated after being attached, it is possible to obtain a product with no deterioration in the color development and sharpness of the colored fibers, but it is not possible to impart permanent hydrophilicity and permanent melting resistance at the same time.

Similar problems when imparting melt resistance to synthetic fibers as described above are also observed in a method in which a mixed aqueous solution of a triazine derivative compound and an acid or a salt thereof is applied to synthetic fibers and then steam-treated.

The inventor of the present invention arrived at the present invention as a result of intensive research in order to solve such problems in melt processing resistance of colored synthetic fibers.

That is, the present invention provides colored synthetic fibers with a melamine derivative compound, for the purpose of imparting excellent melting resistance or further hydrophilicity to the colored synthetic fibers without impairing their color development and clarity. Nonionic surfactants and propane sultone or tetrakishydroxymethyl phosphonium
The fibers are treated with an aqueous solution containing chloride (hereinafter referred to as THPC), and at this time, the nonionic activator is attached to the fibers in an amount of 0.01-0.1% by weight, and then steam-treated. This is a melt-resistant processing method for colored synthetic fibers.

Examples of the melamine derivative compound applicable to the present invention include compounds represented by the following general formula.

(However, in the formula, R1 to R6 are 1, -0H1-CH20
CH3, -CH20CH3, -CH20H.

-cH2CH20H1-C2CH2CH20H, and at least two of R1-R6 are -CH20H.

) The amount of these melamine derivative compounds attached to fibers is 5~
30 wt%, preferably in the range of 8 to 20 wt%.

If the amount of the melamine derivative compound attached to the fiber is less than 5 wt%, sufficient melt resistance cannot be obtained.

The amount of propane sultone or THPC used in combination with the melamine derivative compound to impart melt resistance and hydrophilicity at the same time is 0.5 to 60 wt% based on the melamine derivative compound, and outside this range, the purpose of the present invention cannot be achieved. The effect of doing so cannot be obtained.

In addition, nonionic surfactants used in combination with melamine derivative compounds include polyoxyethylene ester type, polyoxyethylene ether type, polyoxyethylene amine amide type, polyhydric alcohol fatty acid glycerin type, and polyhydric alcohol fatty acid sorbitan. type, and the jetanolamine type of polyhydric alcohol fatty acid.

These nonionic surfactants are preferably contained in an aqueous solution of 0.
0.01 to 1 wt % is added to the fibers by treatment with this liquid.

Outside this range, the desired effects of the present invention cannot be obtained.

The method of attaching the treatment liquid containing the melamine derivative compound of the present invention to the fibers is to immerse the fibers in the treatment liquid and then squeeze the liquid using a squeeze mangle, or to spray the treatment liquid onto the fibers. The method is preferably used.

Steam treatment at a temperature of 40 to 150°C, preferably 60 to 13°C
The test is carried out in an atmosphere of 0°C and relative humidity of 40% or more.

The steaming treatment time is determined depending on the type and concentration of the drug used together with the melamine derivative compound, the treatment temperature, etc., and is from several seconds to several tens of minutes.

After steaming, soaping is performed.

Soaping can be done by washing with room temperature water or hot water, but it is more effective if a detergent is used in combination.

The synthetic fibers used in the present invention can be applied to any of synthetic fibers such as polyester fibers, polyamide fibers, and acrylic fibers, and furthermore, these synthetic fibers can be blended, interwoven, interwoven, etc. to form any fiber form. It can also be applied to.

EXAMPLES Hereinafter, the present invention will be explained in more detail with reference to Examples.

In addition, the melt resistance and hydrophilicity of the fibers in the examples and the degree of whitening of the colored fibers due to melt-resistant processing were measured by the following method.

(1) Resistance to melting Place a lit cigarette on a horizontally placed cloth for 20 seconds and observe whether holes are formed due to melting.

Melt resistance: ◎...No holes x...Large holes (2) Using the hydrophilic Byreck method (JIS-L-TOTS 1970), measure the water absorption length of the test fabric and determine the size of the water absorption length. is the degree of hydrophilicity.

(3) Whitening degree Using a digital colorimeter 101D manufactured by Nippon Heavy Industries ■,
The difference in Y value (△Y) before and after the melt-resistant processing of the colored fibers is measured and is expressed as the degree of whitening.

Degree of whitening (△Y) = (Y value after processing - Y value before porcelain) Example 1 Soluna (polyester fiber manufactured by Mitsubishi Rayon Co., Ltd.) processed yarn knitted fabric was coated with Score Roll 400 (nonionic active product manufactured by Kao Soap Co., Ltd.) After scouring at 80°C for 15 minutes using an aqueous solution of 0,5P/,g, thoroughly washing with water, and drying in a hot air dryer at 170°C for 5 minutes.
After drying and heat setting for a few minutes, a sample scouring cloth was prepared.

After dyeing this scouring cloth using a jet dyeing machine under the following conditions, 1? After soaping at 80°C for 30 minutes using an aqueous solution of Reductor B-1 (Kangen Soaping Agent manufactured by Sankyoka☆☆Seisha) of 1.5 liters, the cloth was thoroughly washed with water and dried to obtain a dyed cloth of dark red. .

Polysynthron Red SL (Disperse dye manufactured by Hoechst) %owf Diamond Sub#-RN-E0.8%owf (Dispersion dye manufactured by Mitsubishi Chemical Corporation) Sumikalon Prill Red 5F-31%owfBL (Dispersion dye manufactured by Sumitomo Chemical Co., Ltd.) ) Disper VG (Meisei Kagaku Co., Ltd. dyeing o, sy, "z color auxiliary agent) Disper TL (Meisei Kagaku Co., Ltd. dyeing 0.2P/J color auxiliary agent) Bath ratio 1:50 130℃ x 60 minutes of this dyed fabric As a result of measuring tristimulus values using a digital colorimeter, the following values were obtained.

X value = 3.5 Y value = 2.7 Z value = 2.9 This dyed cloth was treated with 10 wt% trimethylolmelamine, 1 wt% propane sultone, and 0 to 1 wt% polyoxyethylene oleyl ether as a nonionic activator. After immersing the dyed fabric in an aqueous solution for 1 minute, the liquid was squeezed using a squeezing mangle, and the pick-up rate of the treatment liquid on the dyed fabric was 10.
It was set to 0 wt%.

Subsequently, after steaming in 100°C saturated steam for 2 to 30 minutes, washing with 20°C water for 5 minutes using a fully automatic washing machine 5W-7200 (manufactured by Sanyo Electric Co., Ltd.), dehydration, and drying. A processed cloth was obtained.

The degree of whitening (ΔY) and melting resistance of this processed cloth were measured and the following results were obtained.

From the above results, if the amount of the nonionic activator polyoxyethylene oleyl ether is less than 0.001% owf, the dyed fabric will whiten, which is inappropriate.

On the other hand, if it exceeds 1% owf, it cannot be applied because melting resistance is not imparted.

Therefore, in order to prevent whitening and impart melt resistance to dyed fabrics, 0.01 to 0.1% of nonionic activators should be added.
It can be seen that it is sufficient to deposit a limited amount of owf and then perform the steaming treatment.

In addition, in order to measure the permanent melting resistance and permanent hydrophilicity of the processed fabric of the present invention obtained by the method of this example, a fully automatic washing machine was used.
After washing was repeated 10 times with synthetic detergent Zabu (manufactured by Kao Soap Co., Ltd.) 12/l of 40°C washing liquid, the water absorption length and melting resistance were measured by the Bayrac method, and the following results were obtained.

This shows that the processed fabric of the present invention has excellent permanent melting resistance and permanent water absorption.

Example 2 The same dyed fabric used in Example 1 was immersed for 1 minute in an aqueous solution containing 10 wt% trimethylolmelamine, 1 wt% propane sultone, and 0.02 wt% of the nonionic activator shown in the following table. , Squeeze the liquid using a squeezing mangle, and increase the pick-up rate of the treatment liquid to the dyed fabric at 100wt.
%.

Subsequently, it was steamed for 2 minutes in saturated steam at 100°C, washed with water in a fully automatic washing machine for 2 minutes, and then dried.
Five types of processed fabrics were obtained.

None of these five types of processed fabrics showed any whitening due to processing, and even after being washed 10 times with a commercially available synthetic detergent using the method of Example 1, they had excellent melt resistance and water absorption. It had

Example 3 The same dyed fabric used in Example 1 was mixed with 12 wt% trimethylolmelamine, 5 wt% THPCo, and 1 emulgen.
20 (Nonionic activator manufactured by Kao Atlas Co., Ltd.) 0.02
After being immersed for 1 minute in a 20° C. aqueous solution containing wt%, the liquid was squeezed using a squeezing mangle, and the pick-up rate of the treatment liquid to the dyed fabric was set to 100wt%.

Subsequently, the cloth was steamed for 2 minutes in saturated steam at 100°C, washed with water at 20°C for 2 minutes using a fully automatic washing machine, and then dehydrated and dried to obtain a processed fabric.

This processed cloth showed no whitening due to processing, and was repeatedly treated with a synthetic detergent by the method of Example 1.
It had excellent melt resistance and water absorption even after 0 washes.

As a comparison, trimethylolmelamine 12wt% and THP C were used without the nonionic activator Emulgen 120.
As a result of processing in the same manner as in Example 1 using an aqueous solution containing 5 wt% O, it was found that excellent permanent melting resistance and permanent water absorption were imparted, but the processed fabric was significantly whitened. This greatly reduced the product value.

Example 4 A nylon fabric dyed dark blue with an acid dye was mixed with 10 wt % hexamethylolmelamine and 0.0 wt % propane sultone.
After immersing in an aqueous solution containing 0.05 wt% of 5 wt% Oyohiemalgen 911 (nonionic activator manufactured by Kao Atlas Co., Ltd.) for 1 minute, the liquid was squeezed using a squeezing mangle to determine the pick-up rate of the treatment liquid on the dyed fabric. It was set to 100wt%.

Subsequently, the fabric was steam-treated in saturated steam at 100°C for 10 minutes, thoroughly washed with water, and dried to obtain a processed fabric.

This treated fabric did not show any whitening due to the treatment and showed excellent melting resistance and water absorption even after being washed 10 times using the synthetic detergent according to the method of Example 1. No perforation phenomenon was observed even when brought into contact with
Further, the water absorption length by the Bayrak method was 128 mm.

Claims (1)

[Scope of Claims] 1. When adhering colored synthetic fibers with an aqueous solution containing a melamine derivative compound represented by the following general formula and propane sultone or tetrakis hydroxymethylphosphonium chloride, a nonionic activator is added to the aqueous solution. 1. A method for melt-resistant processing of colored synthetic fibers, which comprises applying an ionic activator to the fibers so that the amount of the ionic activator adhered to the fibers is 0.01 to 0.1% by weight, and then subjecting the fibers to evaporation treatment. General formula (Tatashi, in the formula R, -R6 is -H1-OH1CH20C
H3, -CH2CHH5, -CH20H. -CH2CH20H1-CH2CH2CH20H, and at least two of R0 to R6 are -CH20H. )