JPH03152271A - Fiber structure containing elastic yarn having excellent durability and production thereof - Google Patents

Abstract

PURPOSE:To obtain the title fiber having improved light deterioration resistance and chlorine deterioration resistance and excellent durability of elastic recovery by treating a fiber structure containing polyurethane-based elastic yarn, etc., with an antioxidant and covering the surface of fiber with a coating film of polyoxyphenol. CONSTITUTION:A fiber structure containing polyurethane-based elastic yarn or polyester-based elastic yarn is dyed, firstly treated with a dispersion of an antioxidant composed of a hydroxybenzophenone-based compound, a benzotriazole-based compound, etc., further treated with a polyoxyphenol compound (e.g. synthetic tannin such as sulfonated substance of phenolsulfonic acid formaldehyde resin or novolak resin), the surface of fiber is covered with a coating film of the compound, diffusion of the antioxidant to the outside of fiber is prevented, light deterioration resistance and chlorine deterioration resistance are improved and durability of elastic recovery is increased. The treatment with the antioxidant is simultaneously carried out with dyeing.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention improves the light deterioration resistance and chlorine deterioration resistance of fiber structures containing elastic yarns, thereby improving the durability of elastic recovery force. be.

(Prior Art) Elastic thread is a fiber with elasticity similar to rubber, and is clearly different from ordinary fibers such as nylon and polyester.

Elastic threads are usually made up of a high melting point, highly crystalline segment (hard segment) and a low melting point amorphous segment (soft segment) in a block copolymer having high elasticity, and various elastic threads can be produced by combining these two segments. When the node segment and soft segment are connected by a urethane bond or an ester bond, they are called urethane elastic yarn and polyester elastic yarn, respectively. The purpose of using elastic yarns in woven or knitted fabrics is to create stretchable fabrics, and the use of elastic yarns provides significant elongation and recovery.

Most elastic threads are rarely used alone,
Most of them are used in combination with other fibers such as nylon, cotton, polyester, etc. to make woven and woven products. These elastic threads or composite materials containing elastic threads lose their resilience during use, resulting in a loss of fit (fabric tangles and elongation9), so the service life of the product is shorter than that of general clothing. shellfish. The cause of the decline in resilience is the cleavage of the molecular main chains that make up the elastic threads due to various environmental factors such as photodeterioration due to light and oxygen in the atmosphere, chlorine deterioration due to chlorine contained in laundry water or pool water, and hydrolysis by fungi. This is thought to be due to the decrease in molecular weight.

Methods to prevent the decline in recovery power are being actively studied at the yarn manufacturing stage, and their performance is improving year by year. However, countermeasures taken at the yarn manufacturing stage are naturally limited due to constraints arising from manufacturing process conditions and economic efficiency. Moreover, no effective countermeasure has yet been found at the dyeing processing stage. Therefore, the durability of elastic threads or products containing elastic threads is still inferior to that of other synthetic resins, and measures to improve the durability are desired from various quarters.

(Problems to be Solved by the Invention) The purpose of the present invention is to improve the light deterioration resistance and chlorine deterioration resistance of fiber structures containing elastic yarns, thereby improving the elastic recovery performance of the elastic yarns, and improving the durability of 434 products. It is about improving.

(Means for Solving the Problems) The present invention improves chlorine deterioration resistance by diffusing and permeating an antioxidant into the fibers and forming a polyoxyphenol film on the fiber surface in a fiber structure containing elastic threads. It is characterized by reducing light deterioration resistance and significantly improving product durability.

That is, the present invention involves diffusing and permeating an antioxidant into a fiber structure containing elastic yarns dyed with any dye that can be dyed, such as acid dyes, metal complex acid dyes, threne dyes, disperse dyes, and cationic dyes. By further treating with a polyoxyphenol compound, synergistically superior and durable light emitting,
It was discovered that chlorine resistance performance can be obtained.

Specific examples of the fiber structure containing elastic yarns in the present invention include polyurethane elastic yarns, polyester elastic yarns, and other elastic yarns composed of soft segments and hard segments, which may be used singly or in combination with two or more. It is used in the form of a mixed composite fiber.

Next, the antioxidant used to treat the elastic yarn-containing fiber structure is a polyoxyphenol compound, and specific examples include polybenzophenol compounds, benzotriazole compounds, and oxalic acid anilide compounds.

More detailed examples of the antioxidants used in the present invention include 2
．． 4-dihydroxybenzophenone, 2-hydroxy-
4-methoxybenzophenone, 2.2'-dihydroxy-4,4'-dimethoxybenzophenone y% 2.2',
4.4'-tetrahydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 5-sulfonic acid, 2-hydroxy-4-n-octoxybenzophenone, 2-(2'-hydroxy-3'-tar)
t-butyl-5'-methoxyphenyl)-5-chlorobenzotriazole, 2-(2'-hydroxy-3',
5'-di-tart-butylphenyl)-5-chlorobenzotriazole, 2-(2'-hydroxy-5-methylphenylhydroxy-3'.5'-di-t-de-t-pentylphenyl)-benzotriazole, 2 -(2'-hydroxy-3', 5'-di-t-de-octylphenyl)
-benzotriazole, 2-(2'-hydroxy-5'
-c-det-butylphenyl)-benzotriazole,
2-<2'-Hydroxy-3',5'-Gt #de feeling-
phthylphenyl)-benzotriazole, 2-(2'-
Hydroxy-3'. 5'-di-t-pentylphenyl)-benzotriazole, 2-ethoxy-2'-
There are ethyl oxalic acid bisanilide, 2-ethoxy-5-butyl-2'-ethyl oxalic acid bisanilide, etc., but chemicals other than the above can also be adsorbed to fibers and have a photostabilizing effect and active chlorine. Any substance that has a neutralizing effect can be used. These compounds may be used alone or in combination of two or more.

The amount of antioxidant used is usually 0.1 to 10% of the weight of the fiber.
%owf, preferably 0.5 to 5ow/.

Next, examples of polyoxyphenol compounds used to treat elastic threads include phenolsulfonic acid formaldehyde resin, sulfonated products of novolac Koke resin, metasulfonic acid of resol resin, benzylated phenolsulfonic acid, thiophenol compounds, and dihydroxydiphenyl. There are compounds generally called synthetic tannins, such as sulfonic compounds, and natural tannic acids. By using natural tannic acid in %, you can obtain durable elastic recovery performance. These polyoxyphenol compounds are applied in an amount sufficient to uniformly form a film on the fiber surface, and are usually 05 to 10% o
wf. Preferably it is in the range of 1 to 5% ov/.

By forming a film of polyhydric phenol on the fiber surface, the antioxidant inside the fiber is prevented from diffusing to the outside of the fiber, and the antioxidant action of phenol works synergistically to improve light resistance and chlorine resistance. It is thought that this will improve the

Since the antioxidant does not dissolve in water or only dissolves in a very small amount, the treatment liquid is preferably prepared as a hydrophilic organic solvent solution, a mixed bath solution or an aqueous dispersion of water and a hydrophilic organic solvent.

Hydrophilic organic solvent solutions include methanol, ethanol,
ethylene glycol,! Examples include W,N'-dimethylformamide.

Next, methods for treating fiber structures with an antioxidant solution include a method in which the antioxidant solution is adsorbed at the same time as the dye during dyeing, a method in which the dye is immersed in a separate bath after dyeing, a method in which the antioxidant solution is immersed in the fiber structure at the same time as a polyoxyphenol compound, and a pad cure method. method, pad batch method, spray method, method of adding it to colored paste and printing, etc., but any method may be used (although the method is not limited to %).

In the immersion treatment method, the treatment temperature is 40°C to 130°C, and the treatment liquid is most efficiently absorbed into the fibers at 60°C to 90°C. H of the processing liquid is usually adjusted to a range of 3 to 5.

The treatment time is usually 5 to 60 minutes, preferably 10 to 60 minutes.
It is 30 minutes.

The dyed product treated in this way improves the chlorine and photodegradation performance of the fiber by itself, but by further adding a polyoxyphenol compound, its durability is significantly improved. Among them, if natural tannins and tartarite are treated according to known methods, their a-potency will be dramatically improved.

This seems to be because the antioxidant effects of natural tannins work synergistically. In addition, wet fastness is also improved due to the formation of a film of natural tannins.

When the elastic yarn-containing fiber structure obtained by carrying out the present invention is made of interwoven or mixed fiber wood, the antioxidant is also adsorbed to the mating fibers. That is, in the case of the dipping treatment, the antioxidant is initially adsorbed onto the elastic yarn first. This is thought to be because the soft segments of the elastic yarn have large gaps between molecular structures even at low temperatures, so they are physically adsorbed within the gaps. However, as the temperature rises, the gap between the amorphous parts of the mating fibers expands, so that a portion of the antioxidant adsorbed on the elastic threads is desorbed and adsorbed onto the mating fibers.

When the mating fiber is nylon 6, adsorption to nylon begins at around 60°C, which is the secondary transition point. When treated at 70° C. to 90° C. for 30 to 60 minutes, the adsorption/distribution ratio of the antioxidant to the elastic yarn and the mating fiber reaches equilibrium.

Surprisingly, the elastic yarn-containing colored fiber structure treated by the method of the present invention exhibits improved light fastness and chlorine fastness even when compared to the mating fibers that are knitted and blended with the elastic yarn. This is thought to prevent the vapor phase oxidative decomposition and liquid phase oxidative decomposition of the dye due to the photostabilizing effect and antioxidant effect K of the antioxidant adsorbed on the mating fiber.

In this way, the fiber structure containing elastic yarn obtained by implementing the present invention has improved light and chlorine resistance, so power down (decrease in elastic recovery power) and discoloration will not occur during use. The appearance quality and physical properties of the product will not be impaired due to this, and the product life can be significantly improved.

Therefore, the present invention is applicable to sports clothing such as leotards, swimsuits, ski wear, women's foundation clothing such as bras and girdles, pantyhose stockings, gloves, underwear, etc.
It is expected that it will contribute to improving the durability of a wide range of product fields, including medical base fabrics such as bands and bandages.

Next, the present invention will be specifically explained by giving examples.

Example 1 Scouring set polyamide fiber (6 nylon 504
/l 3 g) and polyurethane elastic fiber (40d)
σ] Cross-knitted material (cross-ratio nylon/polyurethane = 8/
2) Kayanor Milling Blue 2Rf2%ow
f (manufactured by Nippon Ishiyaku Co., Ltd.) Newbon 1゛S (manufactured by Nicca Chemical Co., Ltd.) 2% osaf was stained with acetic acid in a treatment bath adjusted to pE 4 at a temperature of 95°C for 40 minutes. It was then washed with water and dried. Next, post-treatments were carried out using the following post-treatment agents.

Processing 1. Antioxidant only (hereinafter referred to as DiiB) 2.2',4.4'-tetrahydroxy 2%ow
f Benzophenone (hereinafter referred to as TIIB) Vinegar wl (90%) lcc/L Bath ratio 1:30 Treatment temperature 80°C Time 20 minutes Afterwards, wash with water and dry.

Note that the above benzophenone antioxidant was prepared into a uniform aqueous dispersion using a dispersant and added to the treatment bath.

Processing 2. HYFIC GM (synthetic tannin, manufactured by Dainippon Pharmaceutical Co., Ltd.) + DEB + THE HIFIC GM 3% DMB 2% THB 2% Bath ratio 1:30 Processing temperature 80°C Time 20 minutes Afterwards, wash with water and dry.

Processing 3. Natural tannins/Talesite + DBB + THB Natural tannins 3% DEB 2% THE 2% Acetic acid (90%) Ice/L Bath ratio 1:
30 Processing temperature: 80°C, time: 20 minutes Afterwards, the next process is performed.

Tartarite 1.5% Acetic acid 1-/L Bath ratio 1:30 Treatment temperature 60°C Time 20 minutes Afterwards, wash with water and dry.

Comparative Example 1 As a comparative example, the dyed product of Example 1 was post-treated as follows.

Hifix GM 3%. wf processing i7i!
80℃ for 20 minutes, then wash with water and dry.

The results are summarized in Figure 1.

Example 2 Scouring set cationic dyeable polyester fiber (50d
/13g) and polyurethane elastic fiber (40d) interlaced material (interlaced knitting ratio cationic dyeable/polyurethane = 8/2
) is a cationic dye Kayacryl Pink B-ED1%
Ovyf (manufactured by Nippon Kayaku Co., Ltd.) Glauber's Salt 39/L was dyed in a dyeing bath adjusted to pH 4 using acetic acid and sodium acetate at a temperature of 120°C for 50 minutes, and then washed with water. Next, tannic acid 3% owl, 2-(2'-hydroxy-3'-t-butyl-5'-methoxyphenyl)-5-chlorobenzotriazole 1% owf, 2-(2'-hydroxy-3', 5 A treatment bath was prepared in which 1% owf of '-G-T@DeC-butylphenyl)-benzotriazole was adjusted to pH 4 using acetic acid, and the dyed cloth was subjected to high temperature treatment at 80°C for 20 minutes. provided. Furthermore, 2% owf of antimony potash was added to p-p using acetic acid.
Using a H4Ky4 conditioned treatment bath, high temperature immersion treatment was carried out at a temperature of 60° C. for 20 minutes. A uniform aqueous dispersion of the benzotriazole compound was prepared using a dispersant and added to the treatment bath. The results are summarized in Figure 2.

Comparative Example 2 As a comparative example, the dyed fabric of Example 2 was treated with tannic acid and slag without using a benzotriazole compound.

The results are summarized in Figure 2.

Sample: 30% elongation in the measurement direction Light irradiation conditions: JIS LO842 Carbon Arc Statement 3
Irradiate for 20, 40, 60, 80, and 100 hours using a type radiation tester.

Chlorine treatment conditions: Available chlorine 300 ppm unadjusted (approximately 9.8 using sodium hypochlorite) Immerse the sample in the test solution, treat at room temperature for 6 hours, dehydrate and air dry for 1 day (test solution (stir constantly).

Repeat this for 2 days, then 5 days, Treat for 10 and 15 days.

operation , B The strength is determined by the stress at 80% elongation υj.

[Brief explanation of the drawing]

FIG. 1A, B and FIG. 2 A, B are graphs showing the light embrittlement (,4) and chlorine embrittlement of Examples and Comparative Examples, respectively. Sample: 30% elongation in the measurement direction Amendment form March 16, 1990

Claims (1)

[Claims] 1) Elastic recovery power, characterized in that a fiber structure containing elastic yarn contains an antioxidant diffused into the fiber and the fiber surface is coated with a polyoxyphenol film. A colored fiber structure containing elastic threads with excellent durability. 2) Claim 1 in which the fibers containing elastic threads are essentially polyurethane elastic fibers or polyester elastic fibers.
The fibrous structure described. 3) The fibrous structure according to claim 1, wherein the antioxidant is a hydroxybenzophenone compound, a benzotriazole compound, or an oxalic acid anilide compound. 4) Polyoxyphenol compounds are generally called synthetic tannins such as phenolsulfonic acid formaldehyde resin, sulfonated products of novolac type resin, metasulfonic acid of resol resin, benzylated phenolsulfonic acid, thiophenol compounds, dihydroxydiphenylsulfone compounds, etc. Claim 1 which is a compound or natural tannic acid
The fibrous structure described.