JPH11302980A - Antistatic water-repellent polyester microfiber cloth - Google Patents

Abstract

(57) [Problem] To provide a polyester microfiber cloth which is a fiber cloth mainly composed of polyester microfiber and has practically no problem in friction fastness, excellent antistatic properties and water repellency. SOLUTION: This is a fiber cloth mainly composed of polyester microfibers exhausted with a polyester-based antistatic agent, the fiber surface of which is coated with a polyurethane-based antistatic resin film, and a fluorine-based water-repellent film is formed on the film. A resin layer is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fibrous fabric mainly composed of polyester microfibers having practically no problem in friction fastness and excellent antistatic and water repellent properties.

[0002]

2. Description of the Related Art Polyester fibers are more likely to generate static electricity than natural fibers, and have problems such as electric shock during sewing and wearing of products, clinging to the body, and adsorption of dirt in the air. In particular, polyester microfiber cloth is widely used in blousons, coats, sportswear, etc. because of its fineness of single yarn and unique texture, but it is more static than polyester fiber cloth. Therefore, it has been required to achieve both improved antistatic performance and water repellency.

However, a processing method for obtaining a polyester microfiber cloth having a single yarn fineness of 1 denier or less having both antistatic performance and water repellency has not been developed. As an antistatic water-repellent treatment method for a normal polyester fiber cloth, a method of mixing a fluorinated compound having a perfluoroalkyl group in a side chain with an acrylate or methacrylate of a polyester alkylene oxide-based compound and applying the mixture to a normal polyester fiber cloth ( JP-A-55-148
No. 281) or a method of coating a normal polyester cloth with an antistatic polymer and then coating it with a water-repellent polymer (Japanese Patent Laid-Open No.
-284067), and even when such a processing method is applied to a polyester microfiber cloth, the obtained processed cloth has poor friction fastness as compared with a normal polyester fiber cloth, and has a low friction fastness. If it is attempted to maintain it, the amount of the antistatic agent and water repellent used is limited, making it difficult to obtain sufficient antistatic performance and water repellent performance. At present, a polyester microfiber cloth having electro-repellency has not been developed.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made in view of such circumstances, and has been developed to provide a polyester microfiber having both frictional fastness and excellent antistatic and water-repellent properties which have no practical problem. The purpose is to obtain a fiber fabric as a main component.

[0005]

The present invention attains the above object and has the following constitution. That is, the present invention relates to a fiber cloth mainly composed of polyester microfibers exhausted with a polyester-based antistatic agent, the fiber surface of which is covered with a polyurethane-based antistatic resin film, and is coated on the resin film layer. A fluorinated water-repellent resin layer is formed, characterized by a friction fastness class 3 or higher, a water repellency of 90 points or higher, and a friction band voltage of 200 after one home washing.
The gist of the invention is an antistatic water-repellent polyester microfiber cloth of 0 V or less.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a method for producing an antistatic water-repellent polyester microfiber cloth according to the present invention will be described in detail. In the present invention, a fiber fabric mainly composed of polyester microfiber is a fiber-forming polymer formed from glycols and carboxylic acids, for example,
Polyester fiber with a single-filament fineness of 1 denier or less after melt-spinning or dyeing and finishing, using a polymer mainly composed of polyethylene terephthalate or polybutylene terephthalate, formed by melt spinning. And a woven fabric, a knitted fabric, a nonwoven fabric, or the like composed of natural fibers such as cotton and wool, and synthetic fibers such as nylon and polyester having a single yarn fineness of 1 denier or more.

In the present invention, the polyester antistatic agent is first exhausted to the above-mentioned fiber cloth. The polyester antistatic agent used here is a polymer formed from glycols and carboxylic acids, and is a compound having a high affinity for polyester fibers such as polyethylene terephthalate and polybutylene terephthalate. When this is adsorbed on the polyester fiber by the exhaustion method, the generation of electric charge due to friction or the like can be suppressed, and the generation of static electricity on the polyester fiber can be prevented. In processing, it is particularly preferable to use a polyester resin solution in the form of an emulsion dispersed in water. Specific commercial products include, for example, ELENITE A-73 (Takamatsu Oil & Fat Co., Ltd.) and SR1
000 (Takamatsu Oil & Fat Co., Ltd.).

[0008] The amount of the polyester-based antistatic agent of the present invention varies depending on the type of fiber cloth used, and is determined from the necessity of antistatic performance, water repellency and friction fastness. It is preferably at least 3% based on the weight of the fiber cloth. In order to exhaust the above-mentioned polyester antistatic agent into the fiber, a normal liquid jet dyeing machine is used to remove 120-130.
The treatment may be carried out at 10 ° C. for about 10 to 30 minutes, but a polyester-based antistatic agent is added to the dyeing bath at the time of dyeing the fabric, and the dye exhaustion and the polyester-based antistatic agent are simultaneously performed. It is more reasonable to do so.

In the present invention, after the polyester antistatic agent is exhausted, a polyurethane antistatic resin liquid treatment is performed by a pad dry method to form a polyurethane antistatic resin film on the surface of the fiber. The polyurethane-based antistatic resin is a compound formed from urethane containing alkylene glycol, and when applied to synthetic fibers, suppresses the generation of antistatic properties of the synthetic fibers.
This polyurethane-based antistatic resin can be used in polymer emulsion type emulsified with an emulsifier, monomer or oligomer type using a water-soluble monomer, etc. Considering the feeling of textile products after film formation, It is preferable to adopt a monomer or oligomer type.
Specifically, Palladium U-300 (Ohara Palladium Chemical Co., Ltd.), Elastron W-33 (Daiichi Kogyo Seiyaku Co., Ltd.) and the like can be mentioned.

The amount of the polyurethane resin adhered varies depending on the type of fiber used, and also depends on required antistatic performance, color fastness, feeling, and the like. It is preferable to provide in the range of 4 to 2% by weight. When the above-mentioned polyurethane resin liquid treatment is performed by the pad dry method, the fiber cloth is immersed using a padder, and then uniformly squeezed with a mangle to uniformly apply the polyurethane resin liquid, and dried at 110 to 150 ° C. Later, 15
By performing a heat treatment at 0 to 170 ° C. for 1 to 3 minutes, a polyurethane-based antistatic resin film is formed on the surface of the fiber.

Next, in the present invention, a fluorine-based water-repellent resin layer is formed on the polyurethane-based resin film formed in the previous step by performing a fluorine-based water-repellent resin liquid treatment. The fluorine-based water-repellent resin used here is a copolymer with a perfluoroalkyl group-containing acrylate or methacrylate or a compound copolymerizable therewith. The compound to be applied.

[0012]

Embedded image (Where R ₁ is hydrogen or a lower alkyl group, R _f is C
_m F _{2m + 1} (however, m is an integer of 2 to 21) perfluoroalkyl group represented by, n is an integer from 10 to 200. )

The compounds copolymerizable with the compound represented by the above general formula include acrylic acid, methacrylic acid,
And vinyl compounds such as styrene and vinyl chloride. The treatment with the fluorine-based water-repellent resin may be performed using a padder or the like. At this time, the adhesion amount of the fluorine-based water-repellent resin is determined from the antistatic performance, the color fastness, and the necessity of the feeling. Usually, it is preferably in the range of 0.4 to 1% based on the weight of the fiber cloth. Further, in order to improve the water repellency of the fiber cloth, a melamine crosslinking agent or an isocyanate crosslinking agent may be used in combination. The present invention has the above configuration.

[0014]

The present inventors speculate as follows why the polyester microfiber fabric of the present invention has excellent dyeing fastness and has both antistatic performance and water repellency. In the present invention, two types of antistatic agents, a polyester antistatic agent and a polyurethane antistatic agent, are used. The polyester antistatic agent has a high affinity with the polyester microfiber, and when applied by the exhaustion method, is adhered to the inside of the fiber of the polyester microfiber and exhibits antistatic performance. However, when the polyester-based antistatic agent is used alone, the polyester-based antistatic agent is hydrophilic, so that a portion of the antistatic agent is dropped off by washing and the antistatic performance is greatly reduced. there were. On the other hand, polyurethane antistatic agents exhibit antistatic performance by coating the surface of polyester microfibers. However, if polyurethane antistatic agents are used alone, in order to obtain antistatic performance with washing durability, However, it is necessary to greatly increase the amount of the polyurethane-based antistatic agent, and there is a problem in that the color fastness is reduced, particularly the friction fastness is reduced and the hand is hardened.

However, as in the present invention, when the surface of the polyester microfiber cloth exhausted with the polyester-based antistatic agent is coated with a polyurethane-based antistatic resin film,
Since the polyurethane antistatic resin film prevents the polyester antistatic agent from detaching from the polyester microfiber cloth, the amount of the polyester antistatic agent and the polyurethane antistatic agent used is suppressed, and thus the feeling is good. Fabrics with antistatic performance with excellent washing durability can be obtained, and the formation of a fluorine-based water-repellent resin layer on the outermost layer not only gives the polyester microfiber fabric an appropriate water-repellent performance, In addition, it is possible to simultaneously prevent the polyester-based or polyurethane-based antistatic agent from being detached from the fiber cloth and to improve the fastness to friction. By combining the above constitutional requirements, the fiber fabric mainly comprising the polyester microfiber of the present invention has a friction fastness class 3 or higher, a water repellency of 90 points or higher, and a friction band voltage after home washing once of 2000 V or lower. It is now possible to combine performance.

[0016]

EXAMPLES Next, the present invention will be described more specifically with reference to examples. The measurement and evaluation of the performance of the fabric in the examples were performed by the following methods. (1) Friction band voltage JIS L-1094 (method B) (2) Water repellency JIS L-1092 (spray method) (3) Friction fastness JIS L-0849 (4) Hand feeling Flexible wind based on sensory test The rating is relatively evaluated in the following three steps. ○ Good △ Somewhat hard × Hard

Example 1 A mixed yarn of a polyester microfiber 40d / 48f (8-split yarn) having a denier of 0.1 denier and a 30d / 12f polyester fiber having a denier of 2.5 denier (mixing ratio: polyester micro Using a fiber / polyester fiber = 3/1) as a warp and a polyester fiber 100d / 24f having a single denier fineness of 4 denier as a weft, a polyester microfiber woven fabric having a satin structure (warp density 2
08 / inch, weft density 77 / inch). Using this polyester microfiber woven fabric, scouring, relaxing, presetting, raising, and weight reduction (weight loss rate: 40%) were carried out according to a conventional method. By treating at 30 ° C. for 30 minutes, the antistatic agent was applied simultaneously with the dyeing (the amount of the antistatic agent attached was 3% by weight) and dried.

Formulation 1 Dianix Black RB-UP 20% owf Elenite A-73 3% owf (manufactured by Takamatsu Oil & Fat Co., Ltd., polyester-based antistatic agent) Nikka San Salt SN-130 0.5 g / liter (Nichika Chemical Co., Ltd.) Made, dispersant) Acetic acid (48%) 0.2cc / liter

Next, the woven fabric is immersed in a polyurethane resin aqueous solution having the following formulation 2 and squeezed uniformly with a mangle at a squeezing ratio of 100%.
After drying at 60 ° C., 1% by weight of a polyurethane antistatic agent was applied. Formulation 2 Palladium U-300 5 parts by weight (Ohara Palladium Chemical Co., Ltd., polyurethane antistatic agent) Catalyst U 0.5 parts by weight (Ohara Palladium Chemical Co., Ltd., catalyst) Water 94.5 parts by weight

Next, it is immersed in a fluorine-based water repellent solution having the following formulation 3, uniformly squeezed with a mangle at a squeezing ratio of 100%, and dried at 160 ° C. with a shrink surfer drier. After adding 0.8% by weight of
For 1 minute to obtain an antistatic water-repellent polyester microfiber fabric of the present invention. Formulation 3 Paraguard 823 [solid content 20%] 4 parts by weight (fluorine water repellent, manufactured by Ohara Palladium Chemical Co., Ltd.) Paracat PG-9 0.6 parts by weight (block isocyanate crosslinking agent, manufactured by Ohara Palladium Chemical Co., Ltd.) Sumitex Resin M-3 0.3 parts by weight (Melamine-based cross-linking agent manufactured by Sumitomo Chemical Co., Ltd.) Sumitex Accelerator ACX 0.3 parts by weight (Sumitomo Chemical Co., Ltd., cross-linking accelerator) Isopropyl alcohol 3 parts by weight Parts water 91.8 parts by weight

For comparison with the present invention, a processed fabric for comparison (Comparative Example 1) was processed in exactly the same manner as in this example, except that the following formula 4 was used in place of formula 1 in this example. I got Formulation 4 Dianix Black RB-UP 20% owf Nikka Sun Salt SN-130 0.5 g / l (Nikka Chemical Co., Ltd., dispersant) Acetic acid (48%) 0.2 cc / l Also compared with the present invention Therefore, in this example, formulation 2
Except for omitting the treatment described above, processing was carried out in exactly the same manner as in this example to obtain a processed fabric for comparison (Comparative Example 2). Further, for comparison with the present invention, a processed fabric for comparison (Comparative Example 3) was obtained in exactly the same manner as in this example except that the treatment of formulation 3 was omitted in this example.

The performances of the present invention and the processed fabric for comparison were measured and evaluated, and the results are shown in Table 1.

[0023]

[Table 1]

As is evident from Table 1, the polyester microfiber woven fabric of the present invention has both excellent antistatic performance and water repellency, and also has good friction fastness and feeling.

Example 2 Mixed yarn of polyester microfiber 40d / 48f (8 split yarn) with single denier fineness of 0.1 denier and polyester fiber 30d / 12f with single denier fineness of 2.5 denier (mixing ratio: polyester micro Fiber / polyester fiber = 7/3) is used for the warp, and polyester fiber 75d / 36f having a single denier fineness of 2 denier is used for the weft, and a polyester microfiber woven fabric having a satin structure (warp density: 254 / inch, weft density: 90 pieces / inch). Using this woven fabric, scouring, relaxing, presetting, raising, and weight-reducing (weight-reduction rate: 25%) were carried out according to a conventional method.
For 30 minutes, and dyeing and exhaustion of the polyester-based antistatic agent (attachment amount: 3% by weight) were performed simultaneously.

Formulation 5 Dianix Black RB-UP 15% owf Dianix Black F 5% owf Elenite A-73 3% owf (manufactured by Takamatsu Oil & Fat Co., Ltd., polyester-based antistatic agent) Nikkasan Salt SN-130 0.5 g / liter (Nikka Chemical Co., Ltd., dispersant) Acetic acid (48%) 0.2cc / liter

Next, the polyurethane antistatic agent was immersed in a polyurethane resin aqueous solution having the following formulation 6, squeezed uniformly with a mangle at a squeezing ratio of 100%, and dried at 160 ° C. with a shrink surfer dryer. % By weight. Formulation 6 Paralein U-300 [solid content 20%] 5 parts by weight (polyurethane antistatic resin manufactured by Ohara Palladium Chemical Co., Ltd.) Paracat U 0.5 parts by weight (catalyst manufactured by Ohara Palladium Chemical Co., Ltd.) Water 94 .5 parts by weight

Here, the fluorinated water repellent was immersed in a fluorine-based water repellent solution having the following formulation 7, uniformly squeezed with a mangle at a squeezing rate of 100%, and dried at 160 ° C. in a drier. After adding 0.6% by weight of
For 1 minute to obtain a polyester microfiber fabric of the present invention. Formulation 7 Paraguard 823 3 parts by weight (Ohara Palladium Chemical Co., Ltd., fluorine-based water repellent) Paracat PG-9 0.45 parts by weight (Ohara Palladium Chemical Co., Ltd., catalyst) Sumitex Resin M-3 0.3 Parts by weight (Melamine cross-linking agent, manufactured by Sumitomo Chemical Co., Ltd.) Sumitex Accelerator ACX 0.3 parts by weight (Catalyst, Sumitomo Chemical Co., Ltd.) Isopropyl alcohol 3 parts by weight Water 92.95 parts by weight

For comparison with the present invention, a processed woven fabric for comparison was produced in exactly the same manner as in this example, except that Eleanite A-73 (polyester antistatic agent) was omitted from formulation 5 in Example 2. (Comparative Example 4) was obtained. Further, for comparison with the present invention, a processed fabric for comparison (Comparative Example 5) was obtained in exactly the same manner as in this example except that the treatment according to the prescription 6 was omitted in this example. Further, for comparison with the present invention, a processed fabric for comparison (Comparative Example 6) was obtained in exactly the same manner as in this example except that the treatment according to the prescription 7 was omitted in this example.

The performances of the present invention and the processed fabric for comparison were measured and evaluated, and the results are shown in Table 2.

[0031]

[Table 2]

As is evident from Table 2, the polyester microfiber woven fabric of the present invention has both excellent antistatic performance and water repellency, and has good friction fastness and feeling.

[0033]

According to the present invention, it is possible to obtain a fiber fabric mainly composed of polyester microfibers having both practically no problem in friction fastness and excellent antistatic performance and water repellency.

Claims (1)

[Claims] 1. A fiber cloth mainly composed of polyester microfibers exhausted with a polyester-based antistatic agent, the fiber surface of which is coated with a polyurethane-based antistatic resin film, and a fluorine-containing material is coated on the resin film layer. A water-repellent resin layer is formed, characterized by a friction fastness class 3 or higher, a water repellency of 90 points or higher, and a friction band voltage of 200 after one home washing.
An antistatic water-repellent polyester microfiber cloth of 0 V or less.