JP2022149482A - Fiber structure, and production method thereof - Google Patents

Abstract

An object of the present invention is to obtain a fiber structure containing cellulosic fibers dyed with a direct dye, which is excellent in wet rubbing fastness and retains other color fastnesses. A fiber structure containing cellulosic fibers dyed with a direct dye, the amine compound containing at least one selected from primary amines, secondary amines and tertiary amines, an amino resin and An amine compound containing at least one selected from primary amines, secondary amines, and tertiary amines in a fiber structure containing a silicone compound and a fiber structure containing a cellulose fiber dyed with a direct dye. , an amino resin and a silicone compound. [Selection figure] None

Description

TECHNICAL FIELD The present invention relates to a fiber structure and its manufacturing method.

In general, direct dyes are widely used for dyeing cellulose fibers such as cotton and linen, mixed fabrics of cellulose fibers and synthetic fibers, paper, wood, leather, and the like. (1) The dyeing operation with direct dyes is simple and easy to use, (2) The cost is relatively low and economical, (3) It does not stain polyester and acrylic fibers, and (4) This is thought to be due to the fact that it has many colors, and (5) it is relatively easy to decolorize and many of them can be re-dyed.

On the other hand, there has been a problem with the fastness of direct dyes. That is, since the dye almost without exception has a sulfonic acid group and is readily soluble in water, the wet fastness (wash fastness, water fastness, etc.) is not good. Therefore, reactive dyes are often used when high fastness is required.

Reactive dyes have the advantages of (1) good wet fastness (water, washing fastness, etc.) and (2) clear hue, but (3) they require a large amount of dye to be exhausted. (4) The dyeing rate is low and the wastewater contains a lot of dye, so it takes time and cost to treat the wastewater. (5) The dyeing time is long. (6) The dye is expensive. There is a problem in terms of productivity.

Therefore, as a method for improving the fastness of dyed cellulose fibers, a dye fixing agent has been developed (Patent Documents 1 and 2).

In addition, as a method for improving the fastness to rubbing, the development of an agent for improving the fastness to rubbing for cellulose fibers has been studied (Patent Document 3). Further, as a technique for improving fastness to rubbing and fastness to washing, combined use of liquid ammonia treatment and resin treatment has been studied (Patent Document 4).

JP 2018-104850 A JP-A-07-292584 JP 2007-031847 A JP 2007-182648 A

However, in order to improve the fastness, especially the wet fastness, of a dyed product dyed with a direct dye, sufficient fastness can be obtained only by applying a fixing agent as described in Patent Documents 1 and 2. In addition, sufficient wet fastness, particularly wet rubbing fastness, of dyed articles dyed with reactive dyes has not been obtained.

In addition, the technique described in Patent Document 3 is to post-treat the amount of the cellulose-based fiber agent after dyeing with a rubbing fastness improver for cellulose-based fibers containing a polymer having a specific vinylamine structural unit and a polysiloxane compound. However, the effect was specifically confirmed in the examples, in the example using a reactive dye, the dye used is a reactive dye, and even if it is applied when a direct dye is used, A satisfactory wet rubbing fastness was not obtained yet.

Furthermore, according to the technique described in Patent Document 4, it is disclosed that the rubbing fastness of denim fabric is set to dry (vertical) grade 4.0 or higher and wet (vertical) grade 1.5 or higher. It has been confirmed that vat dyes are used, and the achieved levels are dry (vertical) 4.0 grade and wet (vertical) 1.5 grade, especially when wet rubbing fastness, It wasn't completely satisfying.

As described above, it has been difficult to improve the wet rubbing fastness in conventional techniques for improving rubbing fastness.

The present invention has been made in view of such circumstances, and provides a fiber structure containing cellulosic fibers dyed with a direct dye, which is excellent in wet rubbing fastness and retains other color fastness. The task is to obtain

As a result of intensive studies by the present inventors in order to solve the above problems, it was found that by adding a specific amine compound, amino resin and silicone resin, it is possible to suppress the shedding of the dye and the shedding of fluff, and improve the color fastness, especially the rubbing fastness. The inventors have found that the degree of improvement is improved, and have completed the present invention. That is, the present invention has the following configurations.
(1) A fiber structure containing cellulosic fibers dyed with a direct dye, the amine compound containing at least one selected from primary amines, secondary amines and tertiary amines, amino resins and silicones A fibrous structure containing a system compound.
(2) The fiber structure according to (1), wherein the amine compound contains a primary amine.
(3) The fiber structure according to (1) or (2), wherein the amino resin contains a melamine resin.
(4) A fibrous structure characterized by having wet rubbing fastness level 4 or higher.
(5) A fiber structure containing cellulosic fibers dyed with a direct dye, the amine compound containing at least one selected from primary amines, secondary amines and tertiary amines, amino resins and silicones The method for producing a fiber structure according to any one of (1) to (4), which contains a base compound.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to produce a fiber structure containing cellulose fibers dyed with a direct dye, which is excellent in color fastness, especially in rubbing fastness and wet rubbing fastness.

The present invention will now be described in more detail.

The direct dye used in the present invention is a dye that can directly dye cellulosic fibers without using a mordant. More specifically, among water-soluble anionic dyes, it is a dye that has a relatively large molecular weight and an affinity for cellulosic fibers. Direct dyes include general direct dyes, high-grade direct dyes, post-treatment type direct dyes, and the like.

The cellulosic fibers used in the present invention include natural cellulosic fibers such as cotton and linen, regenerated cellulosic fibers such as rayon, polynosic and lyocell, and semi-synthetic fibers such as acetate fibers such as diacetate and triacetate.

In addition, the fibers constituting the fiber structure of the present invention may be composed only of cellulosic fibers, but may contain other fibers. Other fibers include synthetic fibers such as polyester, nylon, polyurethane, acrylic, and polylactic acid.

The content of the cellulosic fiber is not particularly limited, but from the point of view that the effect of the present invention is remarkable, it is preferably 20 to 100% by mass, more preferably 30 to 100% by mass, of the total fiber amount. more preferred.

The fiber structure of the present invention is not particularly limited and includes, for example, thread, tow, top, skein, woven fabric, knitted fabric, non-woven fabric, rope and the like. Woven or knitted fabrics are particularly preferred.

Dyes used for dyeing cellulosic fibers generally include direct dyes, reactive dyes, vat dyes, indigo/sulfide dyes, and direct dyes are used in the present invention. Examples of dyes used for dyeing fibers other than cellulosic fibers include disperse dyes, cationic dyes, acid dyes, metal dyes, mordant dyes, and fluorescent brighteners.

As the dye used for dyeing the fiber structure containing the cellulosic fiber of the present invention, a direct dye is used for the cellulosic fiber as described above. Dyes can be used. For example, when a fiber that can be dyed with a disperse dye is used in combination, the fibers may be dyed with a disperse dye and then dyed with a direct dye, or the disperse dye and the direct dye may be used in combination and dyed in the same bath. When fibers that can be dyed with a cationic dye are used together, the fibers may be dyed with a cationic dye and then dyed with a direct dye, or a cationic dye and a direct dye may be used together and dyed in the same bath. Also, a pre-dyed yarn that is dyed at the stage of yarn may be used, or a dyed yarn that is colored at the stage of raw yarn may be used.

Dyeing methods include dip dyeing, continuous dyeing, textile printing, and the like. Dyeing machines include cheese dyeing machines, jigger dyeing machines, wince dyeing machines, jet dyeing machines, and paddle dyeing machines.

A fibrous structure containing cellulosic fibers dyed with the direct dyes of the present invention contains specific amine compounds, amino resins and silicone compounds.

The amine compound includes one or more selected from primary amines, secondary amines and tertiary amines. The amine compound as used herein does not include a thermosetting resin such as an amino resin, which will be described later. And, it is preferable to have a cross-linking by a direct dye and an ionic bond. The cationic amine compound forms a complex with the anionic direct dye through ionic bonding, forming a film on the fiber and suppressing the dye from falling off, thereby improving the color fastness. Among them, primary amines have a high cation density, can exhibit a large effect even in a small amount, and can further cationize the surface of the fiber structure, so the primary amine is included as the amine compound. is particularly preferred. Therefore, whether or not the amine compound has cross-linking with the direct dye through ionic bonding can be confirmed by the state of detachment of the dye when the fiber structure dyed with the direct dye is immersed in the treatment liquid. That is, the treatment liquid before immersion of the fiber structure dyed with the direct dye and the residual liquid after the treatment after immersion are judged on the JIS L0805: 2005 gray scale for staining, and if it is grade 4 or higher It can be determined that the shedding of the dye is suppressed, and if the liquid stain of the washing fastness evaluated according to the JIS L0844: 2011 7.1 A-2 method is 4 or higher, the dye is shedding. can be determined to be suppressed. If it is determined that the detachment of the dye is suppressed by any of these methods, it is assumed that the amine compound has a direct crosslink with the dye through an ionic bond.

In the present invention, as the amine compound in the fibrous structure containing the amine compound, the product after the direct dye and the cross-linking reaction are also included in the category of the amine compound. Similarly, for example, products after a primary amine undergoes a cross-linking reaction with a direct dye are also included within the category of primary amines.

Processing agents containing primary amines are commercially available, such as "Danfix (registered trademark)" 723 manufactured by Nittobo Medical Co., Ltd.

In the present invention, the amine compound is preferably contained in a fibrous structure containing cellulosic fibers in an amount of 0.02 to 0.9% by mass, particularly preferably 0.2 to 0.5% by mass, as a solid component. , and more preferably 0.35 to 0.45% by mass. When the content is 0.02% by mass or more, a sufficient effect of preventing the dye from falling off can be obtained, the property of improving the fastness to rubbing is sufficient, and variation is suppressed. Moreover, even if it is too large, the fastness to rubbing is not necessarily improved by the amount.

The above amino resin is a thermosetting resin obtained by reacting (addition-polymerizing) formaldehyde with a compound having a —NH ₂ group such as urea, melamine, aniline and guanamine. Specific examples of amino resins include melamine-based resins, urea-based resins, aniline-based resins, and guanamine-based resins. Among them, melamine-based resins are preferred. Among them, melamine resin is preferable from the viewpoint of fastness. The melamine-based resin referred to here is a resin formed by polycondensation of a melamine derivative such as methylolmelamine. The melamine resin is commercially available, such as "Amidia (registered trademark)" M3 manufactured by DIC Corporation.

When the amino group of the amino resin and the hydroxyl group of the cellulose fiber are cross-linked by covalent bonding, fluff can be prevented from coming off, thereby improving the fastness to rubbing, especially the fastness to wet rubbing. Among them, a melamine resin is preferable because the strength is increased by a cross-linking reaction between the hydroxyl groups of the cellulose fiber and the melamine resin, thereby suppressing the fibrillation of the cellulose fiber and having a high effect of suppressing fluff shedding.

In the present invention, the amino resin in the fibrous structure containing the amino resin also includes a product after cross-linking with the cellulosic fiber by covalent bonding.

The amino resin is preferably contained in a fiber structure containing cellulose fibers in an amount of 0.05 to 3.6% by mass, particularly preferably 0.25 to 2.5% by mass, as a solid component, and further 0.5 to 1.6% by mass is preferred. As a result, the amine compound alone is insufficient to suppress fibrillation of cellulosic fibers due to wet friction. Further, the shedding of fluff is suppressed, and the fastness to wet rubbing is improved. If the amount is too small, the cross-linking may be insufficient, and the improvement of fastness to wet rubbing may be insufficient and may vary. On the other hand, if it is too large, it may affect the hardening of the texture and the concentration of residual formalin.

The silicone-based compound is an organopolysiloxane-based compound, and includes dimethylsilicone, methylphenylsilicone, methylhydrogensilicone, and the like. Among silicones, modified silicones in which organic acids are introduced into side chains and terminals may be included. Examples of modified silicone include amino-modified silicone, epoxy-modified silicone, and carboxy-modified silicone. Among the modified silicones, a special modified silicone having both hydrophilicity and water absorbency is particularly preferred, and these can be appropriately selected from commercially available products. A specific example of such a commercially available special type modified silicone compound is "Silicolan" TK10SL manufactured by Keihin Kasei Co., Ltd., for example. Since the silicone-based compound improves the smoothness, it can improve the fastness to rubbing of the fiber structure. Furthermore, the texture of the fiber structure can be improved.

The silicone compound is preferably contained in a fibrous structure containing cellulose fibers in an amount of 0.03 to 0.4% by mass, particularly preferably 0.07 to 0.26% by mass, as a solid component, and further 0.1 to 0.2% by mass is preferred. The improved smoothness improves the fastness to rubbing, imparts flexibility, and improves the texture. If the amount of such a silicone compound is too small, the variation in smoothness tends to increase, and it also affects the ability to improve fastness to rubbing. may be inhibited.

The fiber structure of the present invention is excellent in color fastness. In particular, color fastness to rubbing: JIS L0849: 2013 9.2 Gakushingata method b) Perform a color fastness test to rubbing according to the wet test, and determine the color fastness test method general rule JIS L 0801:2011. In fastness to rubbing, grade 4 or higher can be achieved, and in a preferred embodiment, grade 4-5 or higher can be achieved.

Furthermore, the fiber structure of the present invention is excellent not only in the wet rubbing fastness but also in other color fastnesses. In a particularly preferred embodiment, a color fastness test is performed according to the fastnesses of (1) to (5) below, and each color fastness is determined according to the general rules for color fastness test methods JIS L 0801: 2011. It is possible to achieve grade 4 or above in any case.
(1) Rubbing fastness: JIS L0849: 2013 9.2 Gakushingata method a) Drying test (2) Washing fastness: JIS L0844: 2011 7.1 A-2 method (attached white cloth: cotton, nylon).
(3) Light fastness: JIS L0842: 2004 7.2 c) Third exposure method Class 4 irradiation (4) Sweat fastness: JIS L0848: 2004 (6.1 acidic artificial sweat, 6.2 alkaline artificial sweat (each Attached white cloth: cotton, nylon)
(5) Sublimation fastness: JIS L0854: 2013 (attached white cloth: polyester)
The above-mentioned color fastness means color resistance to various effects during the manufacturing process of textile products, subsequent use, and storage, according to the general rule of color fastness test method of JIS L0801:2011. There are two types of color fastness: discoloration and staining. In the color fastness test, the degree of discoloration or fading of the test piece or the degree of contamination of the white cloth attached to the test piece or both of these are determined separately. Color fastness grades are expressed numerically, with Grade 1 being the lowest and Grade 5 being the highest. However, the degree of fastness to light is lowest in grade 1 and highest in grade 8.

Next, the method for producing the fiber structure of the present invention will be explained. That is, in the present invention, the rubbing fastness of the fiber material can be improved by post-treating the fiber product after dyeing it with a direct dye.

The method for producing the fibrous structure of the present invention is not particularly limited as long as the fibrous structure defined in the present invention can be obtained. (These may be hereinafter collectively referred to as "the specific treatment agents used in the present invention") to apply these to the fiber structure can be preferably employed.

As the treatment method, a fiber structure containing cellulose fibers dyed with a direct dye is immersed in a treatment liquid in which all of the specific amine compound, amino resin, and silicone compound used in the present invention are mixed. methods of processing.

The preparation of the treatment liquid is not limited as long as the fiber structure defined in the present invention can be obtained. . Water is preferably used as solvent. When the above commercial products are used as the specific processing agent used in the present invention, the product form is often in the form of a dispersion liquid. In that case, each agent may be blended in consideration of the concentration of the solid component. There are no particular restrictions on the order of liquid preparation. For example, when using the above-mentioned commercially available agent, it is preferable to dilute the stock solution of the product appropriately and mix it with water as a solvent.

In addition, in the present invention, when post-treating the fiber structure containing the cellulosic fiber, along with the specific processing agent used in the present invention, other commonly used fiber processing agents are added to the extent that the wet rubbing fastness is not impaired. can be used in Examples of such processing agents include dye fixing agents, softening agents, cross-linking agents, formalin catchers, fillers, water absorbing agents, and water repellent agents.

Examples of methods for treatment with the treatment liquid include padding treatment, dipping treatment, atomization treatment by spraying, coating treatment, and printing treatment. Cellulosic fiber materials treated by these methods can be dried by conventionally known methods such as natural drying and heat drying.

As a method of cross-linking or fixing the amine compound, amino resin and silicone compound to the fiber, a fiber structure containing cellulose fibers dyed with a direct dye is treated with the amine compound, amino resin and silicone compound used in the present invention. A so-called pad-dry-cure method, which is a method of immersing the compound in a treatment solution in which all of the compounds are mixed and then squeezing under a constant pressure in a spread state, drying and heat-treating, can be preferably used. The drying temperature is preferably 80 to 140°C.

The heat treatment temperature and heat treatment time in the above heat treatment are not particularly limited, but the heat treatment temperature is preferably 150 to 200.degree. C., more preferably 160 to 170.degree. The heat treatment time is preferably 30 to 180 seconds, more preferably 40 to 60 seconds. When it is at least the above lower limit, cross-linking with dyes and fiber structures is sufficient, and variation in wet rubbing fastness improvement is suppressed. On the other hand, when it is equal to or less than the above upper limit, variations in improvement of fastness to wet rubbing are suppressed without affecting the texture and strength of the fabric.

In the above embodiment, hot water washing can be further performed. You may or may not wash with hot water. When washing with hot water, the conditions, temperature, amount of water, time, etc. can be appropriately set by those skilled in the art according to the purpose of the present embodiment. Moreover, when hot water washing is carried out, it is preferable to dry the fiber containing the cellulosic fiber. A person skilled in the art can appropriately set the drying conditions, temperature, atmosphere, time, etc. according to the purpose of the present embodiment.

The thus-obtained fiber structure of the present invention has excellent color fastness and can be used in general clothing such as outerwear and innerwear. Specific examples include uniforms, blouses, shirts, skirts, and slacks.

The present invention will be described in detail below with reference to examples. It should be noted that the scope of the present invention is in no way limited by these examples.

The color fastness was tested for each of the following fastnesses (1) to (5) and determined according to the general rules for color fastness test methods JIS L 0801:2011.
(1) Rubbing fastness: Measured in accordance with JIS L0849:2013 Gakushingata method.
(2) Fastness to washing: Measured according to JIS L0844:2011 A-2 method.
(3) Light fastness: Measured according to JIS L0842:2004 3rd exposure method Class 4 irradiation.
(4) Sweat fastness: Measured according to JIS L0848:2004.
(5) Sublimation fastness: Measured according to JIS L0854:2013.

The adhesion amount of each component was determined as follows.

That is, for each component, the mass of the fabric before treatment was measured, and the mass after soaking in the chemical was measured to calculate the pick-up rate. The amount of solid components remaining on the fabric (adhesion rate) was calculated from the added amount of the drug stock solution, the solid content concentration of the drug, and the pick-up rate, and was defined as the adhesion rate.

(Example 1)
65% by mass polyester (polyethylene terephthalate) fiber and 35% by mass rayon spun yarn dyed by dip dyeing with DIANIX DEEP BLACK PLUS (disperse dye) and SINAR DIR FAST BLACK (direct dye) for warp and weft. A woven fabric (T/R) was prepared. Next, a fixing agent containing a primary amine (“Danfix (registered trademark)” 723 manufactured by Nittobo Medical Co., Ltd.) 23.5 g / L, and a melamine resin (manufactured by DIC Corporation “Amidia (registered trademark) "M3) 10 g / L, a catalyst of about 10% of the amount of melamine resin to crosslink the melamine resin ("Catalyst" ACX manufactured by DIC Corporation), a silicone resin containing special modified silicone (manufactured by Keihin Kasei Co., Ltd. A solution containing 18 g/L of "Silicoran" TK10SL) was prepared, and after immersion in the solution, mangle treatment was performed so that the pickup rate was 60 to 70%, dried at 110°C for 3 minutes, and dried at 170°C for 40 minutes A second dry heat treatment was performed to obtain a treated cloth.

(Example 2)
The amount of the sticking agent containing primary amine used in Example 1 ("Danfix (registered trademark)" 723 manufactured by Nittobo Medical Co., Ltd.) was changed to 15 g/L, and the rest was the same as in Example 1. A treated fabric was obtained.

(Example 3)
The amount of the sticking agent containing the primary amine used in Example 1 ("Danfix (registered trademark)" 723 manufactured by Nittobo Medical Co., Ltd.) was changed to 30 g/L, and the rest was the same as in Example 1. A treated fabric was obtained.

(Example 4)
A treated cloth was obtained in the same manner as in Example 1 except that the amount of melamine resin ("Amidia (registered trademark)" M3 manufactured by DIC Corporation) used in Example 1 was changed to 30 g/L.

(Example 5)
A treated cloth was obtained in the same manner as in Example 1 except that the amount of melamine resin ("Amidia (registered trademark)" M3 manufactured by DIC Corporation) used in Example 1 was changed to 50 g/L.

(Example 6)
A treated cloth was obtained in the same manner as in Example 1 except that the amount of melamine resin ("Amidia (registered trademark)" M3 manufactured by DIC Corporation) used in Example 1 was changed to 70 g/L.

(Example 7)
A treated cloth was obtained in the same manner as in Example 1 except that the amount of the silicone resin containing the specially modified silicone used in Example 1 (“Silicoran” TK10SL manufactured by Keihin Kasei Co., Ltd.) was changed to 25 g/L.

(Example 8)
A treated cloth was obtained in the same manner as in Example 1 except that the amount of the silicone resin containing the specially modified silicone used in Example 1 (“Silicoran” TK10SL manufactured by Keihin Kasei Co., Ltd.) was changed to 15 g/L.

(Example 9)
The plain weave (T/R) used in Example 1 is made of spun yarn of 65% by mass of polyester (polyethylene terephthalate) fiber and 35% by mass of rayon as warp, 62% by mass of polyester (polyethylene terephthalate) fiber, 34% by mass of rayon and polyurethane A treated cloth was obtained in the same manner as in Example 1 except that a plain weave fabric (T/R/PU) using long and short composite spun yarn of 4% long fiber was used for the weft.

(Comparative example 1)
A plain weave fabric (T/R) similar to that used in Example 1 was prepared. Next, a 23.5 g/L solution of a fixing agent containing a primary amine ("Danfix (registered trademark)" 723 manufactured by Nittobo Medical Co., Ltd.) was prepared, and after immersion in the solution, the pick-up rate was 60 to 60. A mangle treatment was performed so as to obtain a treated cloth of 70%, and after drying at 110° C. for 3 minutes, dry heat treatment was performed at 170° C. for 40 seconds to obtain a treated cloth.

(Comparative example 2)
The treatment liquid of Comparative Example 1 was composed of melamine resin (“Amidia (registered trademark)” M3, manufactured by DIC Corporation) at 10 g/L, and a catalyst (manufactured by DIC Corporation) of about 10% of the amount of melamine resin for cross-linking the melamine resin. A treated cloth was obtained in the same manner as in Comparative Example 1 except that the solution was changed to one containing "Catalyst" ACX).

(Comparative Example 3)
A treated cloth was obtained in the same manner as in Comparative Example 1 except that the treatment liquid of Comparative Example 1 was changed to a 18 g/L solution of a silicone-based resin containing a specially modified silicone (“Silicoran” TK10SL manufactured by Keihin Kasei Co., Ltd.). .

(Comparative Example 4)
The treatment liquid of Comparative Example 1, 10 g/L of melamine resin ("Amidia (registered trademark)" M3 manufactured by DIC Corporation), and a catalyst (manufactured by DIC Corporation) of about 10% of the amount of melamine resin for cross-linking the melamine resin A treated cloth was obtained in the same manner as in Comparative Example 1 except that a solution containing "Catalyst" ACX) was prepared.

(Comparative Example 5)
A solution was prepared by blending the treatment liquid of Comparative Example 1 and 18 g/L of a silicone resin containing special modified silicone ("Silicolan" TK10SL, manufactured by Keihin Kasei Co., Ltd.), and otherwise treated in the same manner as in Comparative Example 1. got the cloth

(Comparative Example 6)
The treatment liquid of Comparative Example 2, a cationic polymer ("Sunfix (registered trademark)" LC-55 Conch manufactured by Meisei Chemical Industry Co., Ltd.) 15 g / L, a silicone resin containing a special modified silicone (Keihin Kasei Co., Ltd. A treated cloth was obtained in the same manner as in Comparative Example 2 except that a solution containing 18 g/L of "Silicoran" TK10SL) was prepared.

(Comparative Example 7)
The treatment liquid of Comparative Example 5, glyoxal resin (“Riken Resin” RG-286 manufactured by Miki Riken Kogyo Co., Ltd.) 100 g / L, a catalyst for cross-linking the glyoxal resin (“Riken Fixer” MX manufactured by Miki Riken Kogyo Co., Ltd.) -2) A treated cloth was obtained in the same manner as in Comparative Example 5 except that a solution containing 30 g/L was prepared.

(Comparative Example 8)
A solution was prepared by blending the treatment liquid of Comparative Example 4 and 100 g/L of a polyurethane resin ("Senka Antiflick" CX-500 manufactured by Senka Co., Ltd.), and the treated cloth was obtained in the same manner as in Comparative Example 8 except for the above. rice field.

(Comparative Example 9)
In order to crosslink the melamine resin ("Amidia (registered trademark)" M3, manufactured by DIC Corporation) used in Comparative Example 6 and the catalyst ("Catalyst" manufactured by DIC Corporation) in an amount of about 10% of the melamine resin amount ACX), glyoxal resin (“Riken Resin” RG-286 manufactured by Miki Riken Kogyo Co., Ltd.) 100 g / L, a catalyst for cross-linking glyoxal resin (“Riken Fixer” MX-2 manufactured by Miki Riken Kogyo Co., Ltd.) 30 g /L, silicone resin containing special modified silicone ("Silicolan" TK10SL manufactured by Keihin Kasei Co., Ltd.) was changed to polyurethane resin ("Senka Antiflick" CX-500 manufactured by Senka) 100g/L, and other comparisons were made. A treated cloth was obtained in the same manner as in Example 6.

Each color fastness was evaluated for the obtained treated cloth. The results obtained are shown in Tables 1 and 2.

Claims (5)

A fiber structure containing cellulosic fibers dyed with a direct dye, comprising an amine compound containing at least one selected from primary amines, secondary amines and tertiary amines, an amino resin and a silicone compound. Containing fibrous structures. The fiber structure of Claim 1, wherein said amine compound comprises a primary amine. The fiber structure according to claim 1 or 2, wherein the amino resin contains a melamine resin. 4. The fiber structure according to any one of claims 1 to 3, which has a wet rubbing fastness of grade 4 or higher. An amine compound containing at least one selected from primary amines, secondary amines and tertiary amines, an amino resin and a silicone compound are imparted to a fiber structure containing cellulosic fibers dyed with a direct dye. The method for producing a fiber structure according to any one of claims 1 to 4, characterized in that: