JPH06264376A - Dyed union knit cloth and production thereof - Google Patents

Abstract

PURPOSE:To increase the resistance of the final products, especially dyed products, of union knit fabrics from polyurethane elastic fibers, polyamide fibers and/or polyester fibers dyeable under a normal pressure, to discoloration caused by chlorine. CONSTITUTION:The union knit fabrics, particularly dyed fabrics having excellent discoloration resistance to chlorine are obtained by allowing union knit fabric prepared from polyurethane elastic fibers, polyamide fibers and/or polyester fibers dyeable under a normal pressure to exhaust at least one of a metal salt of 4-hydroxyphenyl- and/or polyhydroxyphenylmonocarboxylic acid of formula I (R1 is 1-14C alkyl; R2 is 1-10C alkylene; M is alkali or alkaline earth metal, ammonium) or mono- and/or polyhydroxyphenylsulfonic acid metal salt mainly containing 4-hydroxyphenyl homologue.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dyed mixed knitted fabric and a method for producing the same. More specifically, regarding the improvement of chlorine fading resistance of a dyed interlaced knitted fabric containing a polyurethane elastic fiber and a polyamide based fiber and / or a polyester based fiber, the 4-hydroxy represented by Chemical Formula 1 is applied to the interwoven knitted fabric. At least one or more of mono- and / or polyhydroxyphenyl monocarboxylic acid metal salt mainly containing phenyl and mono- and / or polyhydroxyphenyl monosulfonic acid metal salt mainly containing 4-hydroxyphenyl represented by Chemical formula 2 By adding 0.1 to 20% to the weight of the fiber, the dyed interlaced fabric has a significantly improved chlorine discoloration resistance of the fabric in various chlorine-containing environments without impairing the color of the fabric after dyeing. Regarding knitted fabric and its manufacturing method.

[0002]

2. Description of the Related Art Dyeing products that have been dyed with compounded dyes such as acid dyes, disperse dyes, metal-containing dyes, reactive dyes and direct dyes have been discolored in chlorine-containing environments such as chlorine bleaching. Is known to do. Particularly, a knitted fabric made of polyurethane-based elastic fibers and polyamide-based synthetic fibers dyed with acid dyes, disperse dyes, metal-containing dyes, reactive dyes, etc., has an active chlorine concentration of 0.5-
Long-term exposure to chlorine water containing 3 ppm causes discoloration, yellowing, and dullness in the color of the dyed product, especially in fluorescent colors and vivid colors, and its value is greatly impaired.
Conventionally, as a method of improving such chlorine discoloration resistance, a method of using a dye having good chlorine discoloration resistance, a method of imparting water repellency to a fiber or a cloth by some method, and a post-treatment of a dyed product Although methods such as methods for improving chlorine resistance to discoloration resistance have been proposed and studied, up to the present, by adding it, without impairing the color of the fabric immediately after dyeing,
Moreover, no method has been developed to satisfy the chlorine fading resistance.

[0003]

As a method for improving the resistance to chlorine fading, tannic acid, which is usually used as a dyeing fastness improver as disclosed in JP-A-57-14358, is obtained by using a polyamide-based synthetic fiber. A method of imparting the knitted fabric including the fabric has been proposed. However, natural tannic acid itself is a compound colored yellowish brown, and therefore, when it is used for a dyed product of a vivid color or a light color, especially a vivid blue color, the original color or vividness of the dye is greatly impaired. In addition, since tannic acid is a polyphenol compound containing a large number of galloyl groups in its molecule, the presence of a basic additive in the fiber oxidizes two adjacent hydroxyl groups contained in the galloyl group to cause irreversible It has a quinone structure and may be colored in a dark color such as brown to change the color of the dyed product. Further, as a method for improving the resistance to chlorine fading, as disclosed in JP-A-3-1522271, a method for imparting a hydroxybenzophenone compound to a fiber structure by a high temperature immersion treatment is disclosed. Since it does not have a fiber-bonding functional group, it is not practically satisfactory in terms of durability.

[0004]

In view of the above situation, the present inventor has earnestly studied based on a new idea, and as a result, has arrived at an epoch-making present invention that solves the above problems. That is, the present invention relates to a polyurethane-based elastic fiber and a polyamide-based fiber and / or a polyester-based fiber dyed with at least one dye selected from acid dyes, disperse dyes, metal-containing dyes, reactive dyes and direct dyes. A cross-knitted fabric containing at least: a mono- and / or polyhydroxyphenylmonocarboxylic acid metal salt mainly containing 4-hydroxyphenyl represented by Chemical Formula 1 and 4 represented by Chemical Formula 2 At least one or more of mono- and / or polyhydroxyphenyl monosulfonic acid metal salt mainly containing hydroxyphenyl is immersed in a high temperature bath for 0.1-20% by weight with respect to the fiber weight. By doing so, the chlorine-based fading resistance was significantly improved in various chlorine-containing environments without impairing the original color of the dyed product. Dyeings having a durability and is intended to provide its production method. The present invention improves the resistance to chlorine fading and discoloration by incorporating the compound group at the time of dyeing and / or before and after dyeing, and contributes to the improvement of the durability of the product.
The present invention is described in detail below, but the present invention is not limited thereto.

The mono- and / or polyhydroxyphenylcarboxylic acid metal salt derivative mainly consisting of 4-hydroxyphenyl, which is a group of compounds represented by the chemical formula 1 in the present invention, is sodium 4-hydroxyphenylacetate,
Sodium bis (4-hydroxyphenyl) acetate, 1,
Sodium 1-bis (4-hydroxyphenyl) propionate, Sodium 1,2-bis (4-hydroxyphenyl) propionate, Sodium 2,2-bis (4-hydroxyphenyl) propionate, 1,1-Bis (4 −
Hydroxyphenyl) sodium butyrate, 1,2-bis (4-hydroxyphenyl) sodium butyrate, 2,2-
Sodium bis (4-hydroxyphenyl) butyrate, 1,
Sodium 3-bis (4-hydroxyphenyl) butyrate,
Sodium 3,3-bis (4-hydroxyphenyl) butyrate, Sodium 1,1-bis (4-hydroxyphenyl) valerate, Sodium 1,2-bis (4-hydroxyphenyl) valerate, 1,3-bis ( 4-hydroxyphenyl) sodium valerate, 1,4-bis (4-hydroxyphenyl) sodium valerate, 2,2-bis (4-hydroxyphenyl) sodium valerate, 2,3-bis (4
-Hydroxyphenyl) sodium valerate, 2,4-bis (4-hydroxyphenyl) sodium valerate, 3,
Sodium 3-bis (4-hydroxyphenyl) valerate, Sodium 3,4-bis (4-hydroxyphenyl) valerate, Sodium 4,4-bis (4-hydroxyphenyl) valerate, 1,1-Bis (4 -Sodium hydroxyphenyl) hexanoate, sodium 1,2-bis (4-hydroxyphenyl) hexanoate, sodium 1,3-bis (4-hydroxyphenyl) hexanoate,
Sodium 1,4-bis (4-hydroxyphenyl) hexanoate, Sodium 1,5-bis (4-hydroxyphenyl) hexanoate, Sodium 2,2-bis (4-hydroxyphenyl) hexanoate, 2,3-bis Sodium (4-hydroxyphenyl) hexanoate, sodium 2,4-bis (4-hydroxyphenyl) hexanoate,
Sodium 2,5-bis (4-hydroxyphenyl) hexanoate, Sodium 3,3-bis (4-hydroxyphenyl) hexanoate, Sodium 3,4-bis (4-hydroxyphenyl) hexanoate, 3,5-bis Sodium (4-hydroxyphenyl) hexanoate, sodium 4,4-bis (4-hydroxyphenyl) hexanoate,
4-hydroxyphenyl and / or polyhydroxyphenyl monoalkylcarboxylic acid sodium salt derivatives such as sodium 4,5-bis (4-hydroxyphenyl) hexanoate and sodium 5,5-bis (4-hydroxyphenyl) hexanoate, And these monocarboxylic acid magnesium salts are exemplified.

The mono- and / or polyhydroxyphenyl sulfonic acid metal salt derivative mainly consisting of 4-hydroxyphenyl, which is a group of compounds represented by the above chemical formula 2, is 1
-(4-hydroxyphenyl) ethanesulfonic acid sodium salt, 2- (4-hydroxyphenyl) ethanesulfonic acid sodium salt, 2,2-bis (4-hydroxyphenyl) ethanesulfonic acid sodium salt, 1,1-bis (4-
Hydroxyphenyl) propane sulfonic acid sodium salt,
Sodium 1,2-bis (4-hydroxyphenyl) propane sulfonate, Sodium 1,3-bis (4-hydroxyphenyl) propane sulfonate, Sodium 2,2-bis (4-hydroxyphenyl) propane sulfonate, 2, Sodium 3-bis (4-hydroxyphenyl) propanesulfonate, Sodium 3,3-bis (4-hydroxyphenyl) propanesulfonate, 1,1-
Sodium bis (4-hydroxyphenyl) butanesulfonate, sodium 1,2-bis (4-hydroxyphenyl) butanesulfonate, sodium 1,3-bis (4-hydroxyphenyl) butanesulfonate, 1,4-bis ( Sodium 4-hydroxyphenyl) butanesulfonate, Sodium 2,2-bis (4-hydroxyphenyl) butanesulfonate, Sodium 2,3-bis (4-hydroxyphenyl) butanesulfonate, 2,4-bis (4- Sodium hydroxyphenyl) butane sulfonate, sodium 3,3-bis (4-hydroxyphenyl) butane sulfonate, sodium 3,4-bis (4-hydroxyphenyl) butane sulfonate, 4,4-bis (4-hydroxyphenyl) ) Sodium butanesulfonate, 1,1-bis ( Sodium -hydroxyphenyl) pentanesulfonate, sodium 1,2-bis (4-hydroxyphenyl) pentanesulfonate, sodium 1,3-bis (4-hydroxyphenyl) pentanesulfonate, 1,4-bis (4-hydroxy) Sodium phenyl) pentanesulfonate, sodium 1,5-bis (4-hydroxyphenyl) pentanesulfonate, 2,2
-Sodium bis (4-hydroxyphenyl) pentanesulfonate, 2,3-bis (4-hydroxyphenyl)
Sodium pentanesulfonate, Sodium 2,4-bis (4-hydroxyphenyl) pentanesulfonate,
Sodium 2,5-bis (4-hydroxyphenyl) pentanesulfonate, Sodium 3,3-bis (4-hydroxyphenyl) pentanesulfonate, Sodium 3,4-bis (4-hydroxyphenyl) pentanesulfonate, 3, 5-bis (4-hydroxyphenyl) pentanesulfonic acid sodium salt, 4,4-bis (4-hydroxyphenyl) pentanesulfonic acid sodium salt, 4,5-
Sodium bis (4-hydroxyphenyl) pentanesulfonate, sodium 5,5-bis (4-hydroxyphenyl) pentanesulfonate, 4-hydroxyphenyl and / or polyhydroxyphenyl monoalkylsulfonic acid sodium salt derivatives, and these Examples of the monocarboxylic acid magnesium salts of

The 4-hydroxyphenyl-based mono- and / or polyhydroxyphenyl monocarboxylic acid metal salt and the 4-hydroxyphenyl-based mono- and / or polyhydroxyphenyl monosulfonic acid metal salt of the present invention are used. In some cases, even if used alone,
You may use it in combination of 2 or more types. The mono- and / or polyhydroxyphenyl monocarboxylic acid metal salt mainly containing 4-hydroxyphenyl and the mono- and / or polyhydroxyphenyl monosulfonic acid metal salt mainly containing 4-hydroxyphenyl in the present invention are polyamide-based. Polyhydroxyphenyl groups (hydroquinone, catechol, pyrogallol, etc.) that develop color by reacting with basic additives contained in fibers and / or polyester fibers and polyurethane elastic fibers to form a quinone structure are dyed products. Polyhydroxybenzene derivatives (phenol, resorcin, phloroglucin, etc.), which are not preferable because they impair the hue of (1) and do not take a quinone structure when oxidized, are preferable. Further, a substance which is substantially insoluble in an aqueous bath such as a dyeing bath is inferior in handleability in industrial practice, and from this point, an alkali metal or an alkaline earth metal whose salt is likely to be water-soluble is a cation species. It is suitable. Particularly, sodium and magnesium cations are preferable.

The polyamide fiber in the present invention is not particularly limited, but is typified by 6 nylon and 6.6 nylon. The atmospheric pressure cationic dyeable polyester fiber in the present invention is not particularly limited, but in order to impart atmospheric pressure cationic dyeability, for example, sodium 5-sulfoisophthalate or long-chain alkylene glycol is used together. It is represented by a polyester fiber produced by melt spinning a polymerized polyester.

The polyurethane-based elastic fiber in the present invention is an elastic fiber obtained by spinning a polymer composition mainly composed of the following polyurethane. As the polyurethane in the present invention, a polymer diol having a number average molecular weight of 600 or more, preferably 1000 to 5000 and a melting point of 60 ° C. or less, an isocyanate mainly composed of an organic diisocyanate, and a polyfunctional active hydrogen compound having a molecular weight of 400 or less are used. The polymer obtained by reacting is mentioned.

As the polymer diol, at least one of polytetramethylene glycol, polyether glycols such as polyethylene / propylene glycol, ethylene glycol, 1,6-hexanediol, 1,4-butanediol, and neopentyl glycols is used. Adipic acid, suberic acid, azelaic acid, sebacic acid, β-
Polyester glycols obtained by reacting with at least one dicarboxylic acid such as methyladipic acid and isophthalic acid, polymer diols such as polycaprolactone glycol and polyhexamethylene dicarbonate glycol, or two or more thereof. A mixture or a copolymer can be illustrated.

As the organic diisocyanate, 4,4
′ -Diphenylmethane diisocyanate, 1,5-naphthalene diisocyanate, 1,4-phenylene diisocyanate, 2,4-tolylene diisocyanate, 4,4
One or a mixture of two or more kinds of organic diisocyanates such as'-dicyclohexylmethane diisocyanate and isophorone diisocyanate can be exemplified. Furthermore, a small amount of triisocyanate may be used in combination.

As the polyfunctional active hydrogen compound, ethylenediamine, 1,2-propylenediamine, hexamethylenediamine, xylylenediamine, 4,4'-diphenylmethanediamine, hydrazine, 1,4-diaminopiperazine, ethylene glycol, 1 Examples include 1,4-butanediol, 1,6-hexanediol, water and the like, or a mixture of two or more thereof. If desired, these compounds may be used in a small amount in combination with a terminating agent such as monoamine or monoalcohol. However, preferred are diamines alone or mainly.

The polyurethane-based composition is spun into elastic fibers, but it is preferable to dissolve the polyurethane-based composition in a solvent and dry-spin the composition. Examples of the solvent include, but are not limited to, N, N-dimethylformamide, N, N-dimethylacetamide, tetramethylurea and hexamethylphosphonamide. Compositions other than polyurethane that make up polyurethane-based compositions include stabilizers such as lubricants, UV absorbers, anti-yellowing agents, pigments, antistatic agents, surface treatment agents, flame retardants, antifungal agents, reinforcing agents and chlorine. A water deterioration inhibitor is exemplified. In particular, as chlorine water deterioration inhibitors, magnesium oxide, zinc oxide, aluminum oxide,
Examples thereof include metal oxides and metal hydroxides such as magnesium hydroxide, zinc hydroxide, aluminum hydroxide, and hydrotalcite compounds, and these may be used alone or as a mixture of two or more kinds. Particularly preferred is magnesium oxide or zinc oxide. Addition to these polyurethane solutions is not particularly limited, but the average particle size is 0.0
It is preferably added as particles of 5 to 3 μm.

The polyurethane elastic fiber used in the present invention preferably has a denier in the range of 20 to 100, preferably 40 to 80. These elastic fibers are used in the state of covering yarn or bare yarn. The knitted knitted fabric targeted in the present invention is a knitted knitted fabric knitted using the polyurethane elastic fiber and the polyamide type fiber, and the knitted knitted fabric is a weft knitted fabric or a warp knitted fabric. The material may be a ground material, a tricot knitted material, or a Raschel knitted material, and is not limited. The knitting structure can be exemplified by half knitting, reverse half knitting, double atlas knitting, double denby knitting, etc., but is not particularly limited. In addition, it is preferable that the surface of the knitted fabric is composed of a polyamide fiber from the viewpoint of texture.

The knitted fabric is refined, relaxed and dried under normal conditions. Heat set temperature is 150-1
The temperature is 90 ° C, preferably 160 to 180 ° C. The dyeing conditions are 20 to 120 minutes in the dye bath, preferably 40 to 60
Minutes. The dyeing machine may be a Wins dyeing machine, a jet dyeing machine or the like which is normally used. The dye may be any of acid dyes, metal-containing dyes, fluorescent dyes and disperse dyes, as long as they are ordinary dyes selected by dye manufacturers for dyeing polyamide fibers. At the time of dyeing, organic acid esters such as formic acid ester, acetic acid ester, butyric acid ester, etc. were added to the dyeing bath in order to prevent the pH of the dyeing bath from 4.5 to less than 4.5 from the start of dyeing to the end of dyeing. Good. By adding the organic acid ester to the dye bath, it is possible to minimize the dropping of the basic additive from the fiber due to dyeing.

As the method of incorporating the compounds represented by Chemical Formulas 1 and 2 into the dyed cross-knitted knitted fabric, a method of mixing at the time of fiber production, a method of dissolving the compound in an organic solvent and dipping, padding and spraying are used. Although there is a method of attaching the dye, generally, the same method as the case of dyeing with an acid dye may be used. The method is illustrated below, but the production method is not limited thereto. In general dyeing bath preparation, a dyeing treatment liquid is prepared by dissolving a predetermined amount of at least one kind of the compound together with a dye and other dyeing aids in water. The interlaced knitted fabric containing the polyamide-based fibers and the polyurethane-based elastic fibers is dipped in a dyeing treatment solution which has been heated in advance, and then in a bath for 20 to 120 minutes, preferably 40 to 6
Treatment is carried out for 0 minutes at a bath temperature of 40 to 95 ° C., preferably 60 to 85 ° C., so that the compound is exhausted to the fiber surface. Further, it is desirable to adjust the pH of the treatment liquid and the bath ratio in order to further increase the yield of adhesion. Further, the application of the compound to the knitted or knitted fabric may be carried out before dyeing, may be carried out at the same time as dyeing, and is usually carried out after dyeing for the purpose of improving various dyeing fastness by anionic polyphenol or the like. It is preferable to perform it at the same time as the dye fixing treatment or after the fixing treatment.

[0017]

EXAMPLES The present invention will now be specifically described with reference to examples, but the present invention is not limited thereto. In the following examples, a mono- or / and polyhydroxy compound mainly containing phenol represented by Chemical Formula 1 is formed in an interlaced knitted fabric containing at least dyed polyurethane-based elastic fiber and polyamide-based fiber and / or polyester-based fiber. High practical durability due to exhaustion of at least one metal salt of phenyl monocarboxylic acid and metal salt of 4-hydroxyphenyl mainly represented by Chemical formula 2 and / or polyhydroxyphenyl monosulfonic acid An example of improving the resistance to chlorine fading of the dyed product in chlorine water will be illustrated. Moreover, the part in an Example means a weight part. -Example 1-A polytetramethylene ether glycol having a hydroxyl group at both ends and a number average molecular weight of 2000 and 4,4'-diphenylmethane diisocyanate are reacted at a molar ratio of 1: 2 to prepare a prepolymer, and then 1 , 2-propylenediamine was used to extend the chain, and the polymer concentration was 30% (solvent was N, N-dimethylformamide).
A polyurethane solution having a viscosity of 0 ° C.) was obtained. To this solution, add 3% magnesium oxide (average particle size 0.1-2.0 μm) to polyurethane in dimethylformamide dispersed by an attritor, and add whiteness improver, antioxidant and UV absorption. The agent and the gas yellowing inhibitor were added and mixed and stirred to obtain a spinning dope.

After defoaming, the spinning dope was spun out from a spinneret having a hole diameter of 0.2 mm and a number of holes of 5 and extruded into a spinning cylinder in which heated air at 180 ° C. was flowed to perform false twisting at a rotation speed of 10,000 rpm, A 6 denier polyurethane elastic fiber (A) of 40 denier was wound at a spinning speed of 500 m / min while applying 6% of the oil agent to the yarn. As the polyamide fiber, a denier of 50 denier and 12 filaments of 6.6 nylon fiber (B) produced by melt spinning was prepared. As polyester fibers, there were prepared 50 denier and 10 filament normal pressure cationic dyeable polyester fibers (C) produced by melt spinning. Knitting machine A raw machine was knitted using a 28 gauge tricot machine manufactured by KARL MAYER. (A) 100% fiber draft, knitting conditions (A) fiber weaving length 70 cm / 480 course, (B) and (C) fiber braiding length 160 cm / 4
80 courses, (55 courses on the machine), the knitting structure is half knitting.

The greige containing (A) and (B) thus obtained was refined, relaxed, dried and heat set to dye each knitted fabric and apply a chlorine fading resistant inhibitor.
Dyeing treatment was carried out by adding 0.4 g / L of acetic acid, 2 g / L of ammonium sulfate,
Anion-based leveling agent 1.2 g / L and chlorine fading inhibitor:
Sodium 2,2-bis (4-hydroxyphenyl) valerate and 5% owf were dissolved, and the dye: K was added at a bath ratio of 1:13.
Ayacyl Blue BR, 5% owf (acid dye), 40 ° C to 95 ° C, 60 minutes. 5
It was washed with hot water at 0 ° C for 10 minutes. Further, dye fixing treatment was performed using an anionic polyphenol which was not tannic acid. The obtained dyed knitted fabric was stretched and dehydrated, drained with a mangle, dried at 160 ° C. with a pin tenter and set.

The color fading of the dyed knitted fabric obtained by the above-mentioned method due to chlorine water was measured. The conditions of this chlorine fading test are as follows: 1 part of knitted fabric has an effective chlorine concentration of 100
A chlorine water treatment is carried out by immersing the chlorine water in 400 parts of ppm and pH = 7.0 at a bath temperature of 40 ° C. for 30 minutes so that the chlorine water flow is perpendicular to the knitted fabric surface. The color fading was measured by measuring the hue of the dyed cross-knitted fabric, and the difference in hue before and after the treatment with chlorine water was obtained, and the chlorine fastness (color fading grade) was determined from the result. The results are shown in Table 1.

-Example 2- An interwoven knitted fabric dyed with the same prescription as in Example 1 except that the interwoven knitted fabric containing (A) and (C) is used and treated with chlorine water. It was The results are shown in Table 1.

Example 3-A knitting knitted with the same formulation as in Example 1 except that sodium 2,2-bis (4-hydroxyphenyl) butanesulfonate, 5% owf is used as a chlorine fading inhibitor. The ground was prepared and treated with chlorine water. The results are shown in Table 1.

Example 4-A knitted and knitted fabric dyed with the same formulation as in Example 1 except that sodium 2,2-bis (4-hydroxyphenyl) hexanoate and 5% owf are used as a chlorine fading inhibitor. Was prepared and treated with chlorine water. The results are shown in Table 1.

Example 5-A knitted and knitted fabric dyed with the same formulation as in Example 1 except that sodium 2,2-bis (4-hydroxyphenyl) butyrate, 5% owf is used as a chlorine fading inhibitor. Is made,
Chlorine water treatment was performed. The results are shown in Table 1.

Example 6 Sodium 2,2-bis (4-hydroxyphenyl) pentanesulfonate, 5% ow as a chlorine fading inhibitor
A knitted and knitted fabric dyed with the same formulation as in Example 1 except that f was used was prepared and treated with chlorine water. The results are shown in Table 1.

Example 7-The same formulation as in Example 1 except that sodium 2,2-bis (4-hydroxyphenyl) valerate 4,4'-biphenol, 2% owf was used as a chlorine fading inhibitor. A dyed mixed knitted fabric was produced and treated with chlorine water. The results are shown in Table 1.

Example 8 A knitted knitted fabric dyed with the same formulation as in Example 1 except that sodium 2,2-bis (4-hydroxyphenyl) valerate, 10% owf is used as a chlorine fading inhibitor. The ground was prepared and treated with chlorine water. The results are shown in Table 1.

Comparative Example 1 A mixed knitted fabric dyed with the same formulation as in Example 1 was prepared without using any chlorine fading inhibitor, and was treated with chlorine water. The results are shown in Table 1.

-Comparative Example 2-A cross dyed with the same formulation as in Example 1 except that no chlorine fading inhibitor was used and a cross knitted fabric containing (A) and (C) was used. A knitted fabric was prepared and treated with chlorine water.
The results are shown in Table 1.

-Comparative Example 3-A chlorine knitting fading inhibitor and no tannic acid were used as a chlorine fixing fading inhibitor and a dye fixing agent by using a knitted knitted fabric containing (A) and (C) without using any chlorine fading inhibitor. A knitted and knitted fabric dyed with the same formulation as in Example 1 except that the tartar treatment was performed, was prepared and was treated with chlorine water. The results are shown in Table 1.

-Comparative Example 4-Dyeing was carried out with the same formulation as in Example 1 except that no chlorine fading inhibitor was used and tannic acid / tartar treatment was performed as a chlorine fading inhibitor and dye fixing agent. A mixed knitted fabric was prepared and treated with chlorine water. The results are shown in Table 1.

-Example 9-For the purpose of evaluating the washing durability of the dyed interwoven knitted fabrics produced in Examples 1 to 9 and Comparative Examples 1 to 4, a washing cycle test was conducted under the following conditions. It was The results of chlorine water treatment after washing are shown in Table 1.

[0033]

[Table 1] In Table 1, (A) is a polyurethane elastic fiber, (B)
Indicates a polyamide fiber, and (C) indicates a normal pressure cationic dyeable polyester fiber. The adhered amount represents owf.

[0034]

According to the present invention, the chlorine fading resistance of a knitted fabric containing at least dyed polyurethane elastic fibers and polyamide fibers and / or atmospheric pressure cationic dyeable polyester fibers is dyed. It is possible to improve the product without impairing the color of the product, and it is possible to provide a product having practical durability and excellent chlorine resistance.

Front page continuation (72) Inventor Koji Kakuta 2-1-1 Katata, Otsu City, Shiga Prefecture Toyobo Co., Ltd. Research Institute (72) Inventor Hajime Hajime 2-1-1 Katata, Otsu City, Shiga Prefecture Toyobo Research Institute, Inc.

Claims (2)

[Claims] 1. A polyurethane-based elastic fiber and a polyamide-based fiber and / or an atmospheric cation dyed with at least one dye selected from acid dyes, disperse dyes, metal-containing dyes, reactive dyes, direct dyes and the like. A knitted or knitted fabric containing at least dyeable polyester fiber, wherein the knitted fabric is a metal salt of mono- and / or polyhydroxyphenyl monocarboxylic acid mainly containing 4-hydroxyphenyl represented by Chemical formula 1 and Chemical formula 2 Dyeing characterized by containing 0.1 to 20% by weight of fiber of at least one kind of mono- and / or polyhydroxyphenyl monosulfonic acid metal salt mainly consisting of 4-hydroxyphenyl represented by Knitted knitted fabric. [Chemical 1] [Chemical 2] (In the formula, R1 and R2 are alkyl groups having 1 to 14 carbon atoms, R2 is an alkylene group having 1 to 10 carbon atoms, M is an alkali metal such as sodium, an alkaline earth metal such as magnesium, and / or a cation such as ammonia. A cation composed of an atom group that can be generated, and n and m in the formula both represent an integer of 1 or more and 4 or less.) 2. A polyurethane elastic fiber and a polyamide fiber and / or a polyester fiber dyed with at least one dye such as an acid dye, a disperse dye, a metal-containing dye, a reactive dye and a direct dye. A cross-knitted fabric containing at least fibers is formed on the knitted fabric by a metal salt of mono- and / or polyhydroxyphenyl monocarboxylic acid mainly containing 4-hydroxyphenyl represented by Chemical formula 1 and 4-by the chemical formula 2. At least one or more metal salts of mono- and / or polyhydroxyphenyl monosulfonic acid mainly containing hydroxyphenyl are soaked in a high temperature bath that 0.1 to 20% of the weight of the fiber is contained. Features and manufacturing method of dyed mixed knitted fabric.