JP2019019433A - Polyester-based fiber fabric - Google Patents

Abstract

To provide a polyester-based fiber fabric, especially a fabric for use in a school uniform with a closed/stand-up collar (Tsumeeri), that achieves water-repellent performance having washing durability, color deepness and antibacterial properties at the same time while solving a problem of environmental persistence and accumulation in the ecosystem due to PFOA by using a 6C or less fluorine-based water repellent free from perfluorooctanoic acid (PFOA).SOLUTION: The polyester-based fiber fabric is a fabric including a polyester-based fiber having an antibacterial agent added thereto, has a fluorine-based water repellent and an acrylic acid ester polymer fixed to the surface of the polyester-based fiber and has a PFOA content in the fluorine-based water repellent as measured by a flight time secondary ion mass spectrometry of less than 0.02 ppb.SELECTED DRAWING: None

Description

  The present invention is a polyester fiber fabric having deep color, water repellency, and antibacterial properties excellent in washing durability in consideration of the environment in which discharge of perfluorooctanoic acid (hereinafter sometimes abbreviated as PFOA) is suppressed. It is about.

  Conventionally, fluorine-based water repellents have been widely used in (fiber) fabrics in order to impart deep color and water repellent functions. However, these fluorine-based water repellents have a structure having a perfluoroalkyl group having 8 or more carbon atoms. From this structure, PFOA, which has a concern about environmental persistence and bioaccumulation as a by-product, is used. The possibility of containing in trace amounts has been pointed out. For this reason, a fabric using a fluorine-based water repellent that does not contain PFOA is desired by setting the number of carbon atoms to 6 or less.

  However, a fluorine-based water repellent having a perfluoroalkyl group having 6 or less carbon atoms is inferior in water repellency, particularly washing durability, compared to a water repellent having a perfluoroalkyl group having 8 or more carbon atoms. This is an issue.

  Moreover, even when a water-repellent material is fixed to a fabric by performing the same bath treatment with a fluorine-based water repellent having 6 or less carbon atoms and an acrylic resin, the water-repellent performance and the deep color property having durability for washing are compatible. Although it is difficult to achieve this, a fabric for use in school clothes collars is required to achieve and simultaneously achieve water repellent performance excellent in washing durability and deep color and antibacterial properties specialized in black.

  Conventionally, it has been known that a fabric is treated with a fluorine-based water repellent and a low-refractive compound to impart water repellency and deep color with durability to washing. Specifically, a method has been proposed in which a low-temperature plasma treatment is performed on a fabric in advance, and then a fluorine-based water repellent and a low refractive index compound are applied by a padding method after dyeing (see Patent Document 1). However, this proposal is a method for improving dye exhaustion by performing low-temperature plasma treatment before dyeing, and this low-temperature plasma treatment firmly fixes the fluorinated water repellent and the acrylate polymer. Thus, it is a method of imparting water repellency and deep color properties having washing durability, and it could not be achieved that it does not contain PFOA and has antibacterial properties.

  In addition, as a method for producing a deep color water repellent fabric having durability to washing, there is a method of simultaneously applying a fluorine-based water repellent and a reactive silicone or reactive urethane of a color deepening agent to a fabric after plasma processing. It has been proposed (see Patent Document 2). However, in the case of this proposal, in addition to the possibility that general fluorine-based water repellents contain PFOA, the texture change and reduction of slip-off resistance due to silicone resin, and dyeing fastness due to urethane resin There is a problem of lowering.

  In addition, it is known that antibacterial properties can be obtained from polyester fiber fabrics having antibacterial properties by applying a pyridine antibacterial agent (see Patent Document 3). However, when an antibacterial polyester fiber fabric is obtained on the basis of this proposal and an attempt is made to obtain deep color and water repellent functions, the pyridine antibacterial agent and the water repellent become a resin residue due to the complex, and the fabric quality As a product, it was not realized.

JP 7-310278 A JP 2007-291537 A JP 2002-20973 A

  Therefore, the object of the present invention is to solve the environmental persistence and bioaccumulation problems caused by PFOA by using a fluorine-based water repellent having 6 or less carbon atoms that does not contain perfluorooctanoic acid (PFOA). An object of the present invention is to provide a polyester fiber fabric having both water-repellent performance with washing durability, deep color and antibacterial properties.

  The present invention is to solve the above-mentioned problems, and the polyester fiber fabric of the present invention is a fabric containing polyester fibers to which an antibacterial agent is attached, and the surface of the polyester fibers is fluorine. A water-based water repellent and an acrylic acid ester polymer are fixed, and the fluoro water repellent has a perfluorooctanoic acid content of less than 0.02 ppb by time-of-flight secondary ion mass spectrometry. A polyester fiber fabric.

  According to a preferred embodiment of the polyester fiber fabric of the present invention, the antibacterial agent is 2-chloro-6-trichloromethylpyridine, 2-chloro-4-trichloromethyl-6-methoxypyridine, 2-chloro-4- Trichloromethyl-6- (2-furylmethoxy) pyridine, di (4-chlorophenyl) pyridylmethanol, 2,3,5-trichloro-4- (n-propylsulfonyl) pyridine, 2-pyridylthiol-1-oxide zinc and It is at least one selected from the group consisting of di (2-pyridylthiol-1-oxide).

  According to a preferred aspect of the polyester fiber fabric of the present invention, the fluorine-based water repellent is composed of an acrylate copolymer having a perfluoroalkyl group having 6 or less carbon atoms.

  According to a preferred embodiment of the polyester fiber fabric of the present invention, the fluorine-based water repellent and the acrylic are used for the L value (lightness) of the fabric containing the polyester fiber to which the antibacterial agent is attached. The decrease in the L value of the fabric after fixing the acid ester polymer is 1.0 or more.

  According to a preferred embodiment of the polyester fiber fabric of the present invention, the water repellency of the polyester fiber fabric after 20 washings is grade 3 or higher.

  According to a preferred aspect of the polyester fiber fabric of the present invention, wool is mixed with the fabric containing the polyester fiber.

  As a result of intensive investigations on fabrics having deep color, water repellency and antibacterial properties with excellent washing durability, while using fluorinated water repellents that suppress PFOA emissions and are environmentally friendly, The present inventors have investigated that the above-mentioned problems can be solved at once by subjecting a fabric subjected to antibacterial processing to a low-temperature plasma treatment and fixing a fluorine-based water repellent and an acrylic ester polymer onto the fabric.

  That is, according to the present invention, by using a fluorine-based water repellent that does not contain perfluorooctanoic acid (PFOA), it has washing durability while solving the problems of environmental persistence and bioaccumulation due to PFOA. A polyester fiber fabric having both water repellency, deep color and antibacterial properties can be obtained.

  The polyester fiber fabric of the present invention is a fabric containing polyester fiber to which an antibacterial agent is attached, and the surface of the polyester fiber is fixed with a fluorine-based water repellent and an acrylic ester polymer, It is a polyester fiber fabric in which the content of perfluorooctanoic acid (PFOA) by the time-of-flight secondary ion mass spectrometry of the fluorine-based water repellent is less than 0.02 ppb, which is a detection limit.

  The fabric containing the polyester fiber used in the present invention is allowed to further contain regenerated fibers such as rayon and acetate, and natural fibers such as cotton, hemp, silk and wool, among others, color development, texture and heat retention. From this viewpoint, a fabric in which wool is mixed is preferably used.

  Examples of the form of the fabric used in the present invention include woven fabrics, knitted fabrics, and nonwoven fabrics.

  The method for producing a polyester fiber fabric according to the present invention is characterized in that a low-temperature plasma treatment is performed in advance on a fabric containing a polyester fiber that has been antibacterial processed in a bath, and then a fluorine-based water repellent and acrylic acid are used. The mixed dispersion of the ester polymer is fixed on the fiber surface by a pad-dry-cure method. In the present invention, since the fiber surface that has been previously subjected to low-temperature plasma treatment is made hydrophilic in this way, the fluorine-based water repellent and the acrylic ester polymer are firmly fixed to the fiber, and excellent washing durability Water repellency, deep color and antibacterial properties can be obtained.

  Antibacterial agents used in the present invention include 2-chloro-6-trichloromethylpyridine, 2-chloro-4-trichloromethyl-6-methoxypyridine, 2-chloro-4-trichloromethyl-6- (2-furylmethoxy). ) Pyridine, di (4-chlorophenyl) pyridylmethanol, 2,3,5-trichloro-4- (n-propylsulfonyl) pyridine, 2-pyridylthiol-1-oxide zinc, and di (2-pyridylthiol-1- And pyridine compounds such as oxide).

  Among them, in particular, 2-pyridylthiol-1-oxide zinc has good affinity with fibers and adheres firmly to polyester fibers and is exhausted. It is preferably used in terms of the size of the target bacterial species that shows the effect.

  The antibacterial agent used in the present invention preferably has a molecular weight of 200 to 700, more preferably 300 to 500, from the viewpoint of adhering to fibers and facilitating exhaustion and diffusion. When the molecular weight is less than 200, the antibacterial agent adheres, exhausts and diffuses to the polyester fiber, but the washing durability tends to be low. On the other hand, when the molecular weight exceeds 700, the antibacterial agent adheres to the polyester fiber and is not easily exhausted.

  Among the antibacterial agents, it is preferable to use an antibacterial agent having an average particle size of 2 μm or less. When the average particle diameter exceeds 2 μm, it tends to be difficult to adhere to or exhaust from the fibers, and particles tend to settle when used as a processing liquid, and the liquid tends to lack stability. The average particle diameter of the antibacterial agent is preferably 1 μm or less.

  As a method for applying an antibacterial agent to a fabric containing polyester fiber, it is preferable to treat in a bath containing the antibacterial agent, and the antibacterial agent can be attached to the polyester fiber and exhausted and diffused inside the fiber. . The treatment temperature and treatment time are preferably treated at 60 to 130 ° C. for 10 to 120 minutes.

  The addition amount of the antibacterial agent is preferably 1.0% owf or less, more preferably 0.5 to 1.0% owf. If the amount of antibacterial agent added exceeds 1.0% owf, the amount of antibacterial agent adhering to the surface of the polyester fiber becomes too large. Therefore, the fluorine water repellent and acrylic ester polymer used in post-processing are complex. This causes resin debris and the like, resulting in a marked deterioration in quality. Moreover, when the addition amount of the antibacterial agent is less than 0.5% owf, the target antibacterial property cannot be obtained.

  Further, in the washing step after the antibacterial processing, it is preferable that the reduction washing and the washing with the surfactant are dirt-cleaned from the viewpoint of improving the fastness to dyeing and the quality after finishing.

  The low temperature plasma treatment used in the present invention means a discharge generated by applying a high voltage to a gas, and such discharge includes various forms such as a spark discharge, a corona discharge, and a glow discharge. Although there are some, the discharge form suitably used in the present invention is a glow discharge in which the polyester fiber is hardly damaged and the discharge is uniform.

  The glow discharge is preferably generated under a reduced pressure of 500 Pa or less to convert the gas in the apparatus into a plasma, and examples of the gas include Ar, N2, He, CO2, CO, air, and water vapor. Preferably, the treatment time is in the range of 5 to 180 seconds.

  The fluorine-based water repellent preferably used in the present invention is an acrylate copolymer having a perfluoroalkyl group having preferably 6 or less and 1 or more carbon atoms, and is a time-of-flight secondary ion mass spectrometry (TOF-SIMS). ), The content of PFOA is less than the detection limit (0.02 ppb), and this analysis method enables analysis with higher sensitivity than the detection limit of PFOA (2 ppb) using high performance liquid chromatography. It was set as an index indicating that PFOA was not contained. The smaller the PFOA content, the more preferable it is.

  Specifically, the fluorine-based water repellent used in the present invention is preferably a polymer composed only of a monomer not containing an N-methylol group, and more preferably does not contain an N-methylol group. It is a perfluoroalkyl acrylate copolymer composed only of monomers.

  Moreover, as a commercial item of the fluorine-type water repellent used in the present invention, “Asahi Guard” (registered trademark) E series AG-E061 manufactured by Asahi Glass Co., Ltd., NUVA N2114 manufactured by Clariant Japan Co., Ltd., Daikin Industries, Ltd. Examples thereof include “Unidyne” (registered trademark) TG-5521 manufactured by Co., Ltd., “NK Guard” (registered trademark) S22 manufactured by Nikka Chemical Co., Ltd., and MKT-B70 manufactured by Keihin Kasei Co., Ltd.

  The acrylic ester polymer used in the present invention is preferably a compound having a refractive index of 1.5 or less. For example, an acrylic ester polymer such as polybutyl acrylate or polymethyl acrylate, or a copolymer thereof. Polymers can be used.

  Examples of commercially available acrylic ester polymers include Light Epoch AKB manufactured by Kitahiro Chemical Co., Ltd. and Brighton 339-40 manufactured by Kyo Silk Chemical Co., Ltd.

  The use ratio of the fluorinated water repellent and the acrylic ester polymer is preferably 0.1 to 30.0 g / L, more preferably as the compound solid content of the fluorinated water repellent as a concentration range suitable for practical use. Is from 10.0 to 20.0 g / L from the viewpoint of cost and drug effect, preferably 0.1 to 10.0 g / L as the solid content of the acrylate ester polymer compound, more preferably from the viewpoint of cost and drug effect Is preferably 10 to 150% by mass, more preferably 20% from the viewpoint of drug adhesion efficiency, based on the mass of the fabric (fabric). It is a preferred embodiment to attach ~ 150 mass%, more preferably 80 to 150 mass% of the mixed dispersion.

  This mixed dispersion can be prepared by an aqueous emulsion or an aqueous emulsion whose pH is adjusted with any acid. As the arbitrary acid, formic acid, acetic acid, sulfuric acid, citric acid and malic acid, or a buffer solution using these acids can be used.

  Moreover, a solvent can be mixed and added for the purpose of improving the permeability of the water-based emulsion into the fabric. Examples of the solvent include alcohols such as methanol, ethanol and isopropyl alcohol. Moreover, it is a preferable aspect that addition concentration is added in the range of 0-60 g / L as a concentration range suitable for practical use.

  In the present invention, an isocyanate crosslinking agent or a melamine crosslinking agent can be further mixed and used in a mixed dispersion of a fluorine-based water repellent and an acrylic ester polymer. Washing durability is improved by the addition of the above isocyanate-based crosslinking agent and melamine-based crosslinking agent.

  In addition, an antistatic agent, a softening agent, and a hard finish agent are further included in the mixed dispersion of the fluorinated water repellent and the acrylate polymer used in the present invention as long as the effects of the present invention are not impaired. Can do.

  According to a preferred embodiment of the polyester fiber fabric of the present invention, the fluorine-based water repellent and the acrylic are used for the L value (lightness) of the fabric containing the polyester fiber to which the antibacterial agent is attached. The decrease in the L value of the fabric after fixing the acid ester polymer is 1.0 or more.

  The L value (brightness) obtained from CIELAB, which is standardized by the International Commission on Illumination (CIE), is used as the scale for quantifying the deep color, and the ΔL value is the reference color (after dyeing or after dyeing for pre-dyed products) ) By reducing the difference between the L value and the L value of the fabric after the pad-dry-curing comparison, the L value is lowered, and by achieving ΔL ≧ 1.0 as an index that can be visually confirmed that substantially deep color is imparted, It was judged that the deep color that was the subject could be given.

  The black color in the present invention refers to a material having an L value of 17.0 or less when the color of the fabric is measured.

  Moreover, according to the preferable aspect of the polyester fiber fabric of this invention, the water repellency after 20 times of washing | cleaning of the said polyester fiber fabric is 3rd grade or more.

  As a measure for quantifying the water repellency with washing durability, the water repellency after washing 20 times under the washing condition of No. 103 method of JIS L0217: 1995 (JIS L1092: 2009 spray method) is used. Evaluation was made and it was judged as an index having substantial water repellency when grade 3 or higher.

  This polyester fiber fabric is made of an acrylate copolymer having a perfluoroalkyl group having preferably 6 or less and 1 or more carbon atoms, after subjecting the fabric (fabric) subjected to antibacterial processing in a bath to low-temperature plasma treatment. After a mixed dispersion containing a fluorine-based water repellent and an acrylic ester polymer is applied, it is dried using equipment such as a net dryer, cylinder dryer, and tenter, and then dried using equipment such as a baking machine or tenter. It can be manufactured by heat treatment.

  With respect to the fabric (fabric) dyed in black, it is possible to employ a pre-dye that is dyed in a state of cotton (cotton), sliver, thread, etc., and then processed into a fabric (fabric) shape. In addition, after processing cotton, sliver, yarn, and the like into a fabric (fabric) shape, post-dyeing for dyeing the fabric (fabric), or an original yarn obtained by kneading a black pigment into a polyester raw yarn can be employed. .

  Regarding the use of the polyester fiber fabric of the present invention, it can be used as a fabric for general clothing such as men's clothing, women's clothing, apparel, student clothing, jackets, casual wear, uniforms, and sportswear. It can be used as a fabric for filling collar school uniforms.

  Next, the polyester fiber fabric of the present invention and the production method thereof will be specifically described based on examples. The evaluation method of characteristics in the present invention is as follows.

1. Initial water repellency (grade):
According to JIS L1092: 2009 water repellency evaluation by the spray method, it was rated as grade 3 or higher.

2. Water repellency after 20 washings (grade):
JIS L0217: 1995 JIS L1092: 2009 after washing 20 times under the washing conditions specified in the 103 method, grade 3 or higher was determined to pass.

3. L value and L value decrease:
The L value (brightness) obtained from CIELAB, which is standardized by the International Commission on Illumination (CIE), is used as a scale for quantifying deep color properties. ) The difference between the L value of the fabric after the comparison pad-dry-curing was regarded as a decrease in L value, and ΔL ≧ 1.0 was regarded as acceptable. For the colorimeter, color measurement was performed using “CM-2600d” manufactured by Konica Minolta.

4). PFOA concentration (ppb) of fluorine-based water repellent:
The PFOA concentration contained in the fluorine-based water repellent was measured by time-of-flight secondary ion mass spectrometry (TOF-SIMS), and a PFOA concentration of less than 0.02 ppb, which is the detection limit, was accepted.

5. Washing durability:
Above 1.2.3.4. Those that passed all of the characteristics were judged as satisfying the performance having washing durability, and were evaluated as “◯”, and any of these characteristics that had a rejected item was evaluated as “x”.

6). Antibacterial test method (antibacterial):
MRSA clinical isolates were used as bacterial cells according to the antibacterial evaluation method (unified test method) defined by SEK (Textile Products New Function Evaluation Council). In the antibacterial test method, a bouillon suspension of the above-mentioned test bacteria is poured into a sterilized sample cloth, and the number of viable cells after 18 hours of cultivation is measured in a sealed container at a temperature of 37 ° C. In accordance with the following criteria:

  Under the condition of log (B / A)> 1.5, log (B / C) was defined as the difference in the number of bacteria increase / decrease, and 2.2 or more was determined as acceptable. However, A represents the number of bacteria separated and recovered immediately after inoculation of the unprocessed product, B represents the number of bacteria separated and recovered after 18 hours of incubation of the unprocessed product, and C represents the number of bacteria separated and recovered after 18 hours of incubation of the processed product.

<Example 1>
Using a double yarn consisting of a polyester multifilament of 84 dtex-24 filaments for the warp and a polyester multifilament yarn of 250 dtex-72 filaments for the weft, the warp is 143 / 2.54 cm and the weft is 113 / 2.54 cm A woven fabric of Cassids texture was woven. Next, after scouring the obtained Cassids tissue fabric, using a black dye, Dianix Tuxedo Black F, and using liquid-dyeing and colloidalized 2-pyridylthiol-1-oxide zinc as an antibacterial agent 1% owf, and after reduction cleaning, a dried fabric (fabric) was prepared. Next, low-temperature plasma treatment was performed on the obtained fabric (fabric) under the conditions of 5.5 KV, 0.6 A, 53 Pa, and an air atmosphere.

  Next, 40 g / L of MKT-B70, a fluorine-based water repellent manufactured by Keihin Kasei Co., Ltd., 8 g / L of Brighton 339-40, an acrylic acid ester polymer manufactured by Keikin Kasei Co., Ltd., DIC An aqueous system prepared by preparing 4 g / L of “Beccamin” (registered trademark) M-3, which is a melamine-based cross-linking agent manufactured by Co., Ltd., and 1 g / L of catalyst ACX, which is a catalyst for melamine manufactured by DIC Co., Ltd. An emulsion was prepared, and this aqueous emulsion was padded by the pad-dry-cure method so as to be 85% by mass with respect to the mass of the fabric (fabric) prepared as described above. ) Was dried using dry heat at a temperature of 130 ° C., followed by a dry heat treatment at a temperature of 180 ° C. to perform a curing treatment.

  After dyeing, the difference between the fabric (fabric) L value contrast with the L value of the fabric after pad-dry-curing was defined as L value decrease, and the results of L value decrease and water repellency evaluation are shown in Table 1. The fabric after pad-dry-curing had a L value of 1.0 or more in comparison with the fabric (fabric) after dyeing, and it was confirmed that the color was deepened. The water repellency (JIS L1092: 2009 spray method) after washing the fabric 20 times under the washing conditions of JIS L0217: 1995 103 method was evaluated, and water repellency of 3rd grade or higher was confirmed. From the evaluation results, it was confirmed that deep color, durable water repellency and antibacterial properties were satisfied at the same time. It was also confirmed that the content of perfluorooctanoic acid was less than 0.02 ppb. The evaluation results are summarized in Table 1.

<Example 2>
Using a double yarn made of polyester multifilament of 84 dtex-24 filament for the warp and a polyester multifilament yarn of 167 dtex-48 filament for the weft, the warp is 102 / 2.54 cm and the weft is 110 / 2.54 cm. A woven fabric of Cassids texture was woven. Next, after scouring the obtained Cassids tissue fabric, colloidalized 2-pyridylthiol-1-oxide zinc was used as an antibacterial agent simultaneously with liquid dyeing using the black dye Dianix Tuxedo Black F. After treatment with 1% owf and reduction cleaning, a dry fabric (fabric) was prepared. Next, low-temperature plasma treatment was performed on the obtained fabric (fabric) under the conditions of 5.5 KV, 0.6 A, 53 Pa, and an air atmosphere.

  Next, 40 g / L of MKT-B70, which is a fluorine-based water repellent manufactured by Keihin Kasei Co., Ltd., 8 g / L of Brighton 339-40, which is an acrylic acid ester polymer manufactured by Keikin Kasei Co., Ltd., DIC An aqueous system prepared by preparing 4 g / L of “Beccamin” (registered trademark) M-3, which is a melamine-based cross-linking agent manufactured by Co., Ltd., and 1 g / L of catalyst ACX, which is a catalyst for melamine manufactured by DIC Co., Ltd. An emulsion was prepared, and this aqueous emulsion was padded by the pad-dry-cure method to 85% by mass with respect to the mass of the fabric (fabric) prepared as described above, and then the resulting fabric (fabric) was obtained. This was dried using dry heat at a temperature of 130 ° C., and then cured by performing a dry heat treatment at a temperature of 180 ° C.

  The difference between the fabric (fabric) L value after dyeing and the L value of the fabric after pad-dry-curing was defined as L value decrease, and the results of L value decrease and water repellency evaluation are shown in Table 1. It was confirmed that the processed fabric had a deep color because the L value decreased by 1.0 or more in comparison with that after dyeing. The water repellency (JIS L1092: 2009 spray method) after washing the fabric 20 times under the washing conditions of JIS L0217: 1995 103 method was evaluated, and water repellency of 3rd grade or higher was confirmed. From the evaluation results, it was confirmed that deep color, durable water repellency and antibacterial properties were satisfied at the same time. It was also confirmed that the content of perfluorooctanoic acid was less than 0.02 ppb. The evaluation results are summarized in Table 1.

<Example 3>
A 64th black yarn-dyed twisted yarn consisting of 60% by weight of polyester fiber staples and 40% by weight of wool is used as the warp, and the twisted yarn is 800 T / m. Using a double yarn made of filament yarn, a woven fabric having a casidus structure of warps of 143 / 2.54 cm and wefts of 90 / 2.54 cm was woven. Next, after scouring the obtained Cassids tissue fabric, using a liquid dyeing machine, it is treated with 1% owf using colloidalized 2-pyridylthiol-1-oxide zinc as an antibacterial agent, A dried fabric (fabric) was prepared. Next, low-temperature plasma treatment was performed on the obtained fabric (fabric) under the conditions of 5.5 KV, 0.6 A, 170 Pa, and an air atmosphere.

  Next, 40 g / L of MKT-B70, which is a fluorine-based water repellent manufactured by Keihin Kasei Co., Ltd., 8 g / L of Brighton 339-40, which is an acrylic acid ester polymer manufactured by Keikin Kasei Co., Ltd., DIC An aqueous system prepared by preparing 4 g / L of “Beccamin” (registered trademark) M-3, which is a melamine-based crosslinking agent manufactured by Co., Ltd., and 1 g / L of catalyst ACX, which is a catalyst for melamine manufactured by DIC Co., Ltd. After preparing an emulsion and padding this aqueous emulsion to 85% by mass with respect to the mass of the fabric (fabric) prepared as described above by a pad-dry-cure method, the resulting fabric (fabric) is obtained. It dried using the dry heat of the temperature of 130 degreeC, and the curing process was then performed by performing the dry heat processing at the temperature of 180 degreeC.

  The difference between the fabric (fabric) L value after scouring and the L value of the fabric after pad-dry-curing was defined as L value decrease, and the results of L value decrease and water repellency evaluation are shown in Table 2. The fabric after processing was confirmed to have a deep color because the L value decreased by 1.0 or more in comparison with that after scouring. The water repellency (JIS L1092: 2009 spray method) after washing the fabric 20 times under the washing conditions of JIS L0217: 1995 103 method was evaluated, and water repellency of 3rd grade or higher was confirmed. From the evaluation results, it was confirmed that the deep color and durable water repellency were satisfied at the same time. It was also confirmed that the content of perfluorooctanoic acid was less than 0.02 ppb, and good antibacterial properties could be obtained in antibacterial evaluation. The evaluation results are summarized in Table 1.

<Comparative Example 1>
The fabric (fabric) was processed in the same process as in Example 1 except that the antibacterial processing at the same time as dyeing was omitted, and the results of L value reduction and water repellency evaluation are shown in Table 1. It was confirmed that the processed fabric had a deep color because the L value decreased by 1.0 or more in comparison with that after dyeing. The water repellency (JIS L1092: 2009 spray method) after washing the fabric 20 times under the washing conditions of JIS L0217: 1995 103 method was evaluated. In the evaluation, the difference in the number of bacteria increased or decreased was less than 2.2. From the evaluation results, it was confirmed that the antibacterial property was as low as 1.1, and the deep color property, the durable water repellency and the antibacterial property could not be satisfied at the same time. The evaluation results are summarized in Table 1.

<Comparative example 2>
Example 1 except that 100 g / L of Maxguard F247 (a fluorinated water repellent containing 6 or more carbon atoms, solid content 20%) manufactured by Kyo Silk Chemical Co., Ltd. was used as the fluorinated water repellent. The fabric (fabric) was processed in the same process, and the results of L value reduction and water repellency evaluation are shown in Table 2. The processed fabric has a L value of 1.0 or more lower than that after dyeing, and it can be confirmed that the fabric is deeply colored. The fabric is washed according to JIS L0217: 1995 103 method. Evaluation of water repellency after washing 20 times under conditions (JISL1092: 2009 spray method) gave a water repellency of 3 or higher, but the content of perfluorooctanoic acid exceeded 0.02 ppb, 45 ppb Met. The evaluation results are summarized in Table 1.
From the evaluation results, it was confirmed that deep color and durable water repellency could not be satisfied at the same time. The evaluation results are summarized in Table 1.

Claims (6)

  A fabric comprising polyester fibers to which an antibacterial agent is attached, wherein a fluorine-based water repellent and an acrylic ester polymer are further fixed to the surface of the polyester-based fibers, and the flight of the fluorine-based water repellent A polyester fiber fabric, characterized in that the content of perfluorooctanoic acid by time secondary ion mass spectrometry is less than 0.02 ppb.   Antibacterial agents include 2-chloro-6-trichloromethylpyridine, 2-chloro-4-trichloromethyl-6-methoxypyridine, 2-chloro-4-trichloromethyl-6- (2-furylmethoxy) pyridine, di (4 -Chlorophenyl) pyridylmethanol, 2,3,5-trichloro-4- (n-propylsulfonyl) pyridine, 2-pyridylthiol-1-oxide zinc and di (2-pyridylthiol-1-oxide) The polyester fiber fabric according to claim 1, wherein the polyester fiber fabric is at least one selected from the above.   3. The polyester fiber fabric according to claim 1, wherein the fluorine-based water repellent comprises an acrylate copolymer having a perfluoroalkyl group having 6 or less carbon atoms.   With respect to the L value (brightness) of the fabric containing the polyester fiber to which the antibacterial agent is attached, the decrease in the L value of the fabric after fixing the fluorine-based water repellent and the acrylate polymer is 1.0. It is the above, The polyester-type fiber fabric in any one of Claims 1-3 characterized by the above-mentioned.   The polyester fiber fabric according to any one of claims 1 to 4, wherein the water repellency after washing 20 times is 3 or more.   The polyester fiber fabric according to any one of claims 1 to 5, wherein wool is mixed with a fabric containing the polyester fiber.