JPS58144115A - Antimycotic polyamide fiber - Google Patents

Abstract

PURPOSE:The titled fiber that is produced by adding a small amount of carbon black to polyamide fibers containing a benzimidazole antimycotic or halogenated phenyl antimycotic agent, thus being almost free from leach out of these antimycotic agents on washing and dyeing. CONSTITUTION:A benzimidazole antimycotic agent, a halogenated phenyl antimycotic agent and/or a naphthiomate antimycotic agent are added to polyamide chips, preferably before spinning. Then, 0.3-2.0wt% of carbon black is added thereto, preferably in the form of master chips which are prepared by blending a large amount of carbon black with polyamide polymer and spinning is effected to give the objective fiber.

Description

[Detailed description of the invention] The present invention provides a boliad fiber cone having anti-corrosion properties.

Suiroso has sweat, sebum, and dirt attached to it.

It infects and breeds in areas where it can easily accumulate, especially the soles of the feet, which are prone to high temperatures due to socks and shoe soles. Normally, athlete's foot infection is transmitted through shared use of slippers, shoes, and socks, and in public places. It is often caused by shared facilities such as bathhouses and swimming pools, and once infected, it is difficult to completely treat the infection.

As an aid to the prevention or treatment of athlete's foot, it has been proposed to wear socks made of or partially knitted with fibers having anti-thin properties. As an example of a method for imparting antifungal properties to fibers, JP-A-45-16316 proposes a method in which the fibers are blended with naphthiomate antifungal poly7amide chips and spun. Also, JP-A-45-
No. 11837 describes 3-trifluoromethyl-4,4
'-Dichloro-N,N'-Schiff Enyllily 7 was blended into polyamide chips and spun.

A method has been proposed to extend the range.

The method of blending antifungal agent 7 with chips, spinning, and winding has good productivity and excellent uniformity, but the method of knitting socks using fibers containing these antifungal agents and dyeing them When the dyed socks are worn, they are washed, and if the number of washing increases, the antifungal agent will fall off, resulting in insufficient antibacterial performance.

The present inventors have arrived at the present invention as a result of intensive studies to improve this drawback. That is, the present invention provides a polyamide fiber K containing a small amount (or intussusception) of an antifungal agent selected from the group consisting of a penzimidazole antifungal agent, a halogenated phenyl antifungal agent, and a naphthiomate antifungal agent.
This invention relates to an antifungal polyamide chip made by blending carbon black in an amount of 0.63 to 2.0% by weight with respect to polyamide.

The polyamide referred to in the present invention may be any fiber-forming polyamide (for example, Nylon 61, Nylon 66, etc.), or may be a polyamide copolymerized or blended with the three components. Good too.

As an antifungal agent, for example, 2-naphthyl-N-methyl-
N-C'A-)ruyl)thiocarbamate, 2-naphthyl-N-methyl-N-(/-naphthyl)othycarbamate, t-(4-thiazolyl)benzimidazole, bis-(barak p-phenyl diguando) Preferred examples include, but are not limited to, hexanecide and pride groups.

These anti-makoma agents are usually 0.05 to 0.05 to polyamide.
10.0% by weight 1, preferably 0.5~s.

Weight - Contains. If the amount is less than 0.05% by weight, the antifungal performance will not be sufficient. From the standpoint of antifungal performance, the more antifungal agents there are, the better, but if the amount exceeds 10% by weight, spinning becomes difficult.

Any method can be used to incorporate the antifungal agent into the polyamide, but a particularly preferred method is to blend the antifungal agent into the oriamide chips before spinning. A method of blending the contained master chips before spinning is also preferred.

Any method can be used to incorporate carbon black into polyamide. For example, it may be possible to blend polyamide chips with an antifungal agent before spinning, but it is preferable to prepare polyamide chips containing a large amount of carbon black in advance as a master chip, and blend this chip before spinning. It is preferable to meter and feed using an auger feeder or the like during chip spinning.

Capo is blended with polyamide fibers.

The appropriate amount of black is O, S ~ 2.0% by weight.

If the amount is less than 0.3 weight, the antifungal performance will decrease depending on the dyeing process and the number of washings. 2. If the weight is more than C, a sudden pressure increase inside the pack will occur during melt spinning, carbon black will accumulate near the discharge hole and come into contact with the discharged polymer, resulting in non-uniform spinning. This fiber has low breaking strength and elongation, making it unsuitable as a practical fiber.

The polyamide fiber of the present invention exhibits excellent durability and antifungal performance. It is speculated that this is because the antifungal agent on the fiber surface falls off from the fiber surface during dyeing and washing, and the blended carbon black acts as an agent to prevent this from falling off.

The polyamide fiber of the present invention can be particularly suitably used for socks. When used in socks, polyamide fibers may be wrapped in socks alone, but in this case, the polyamide fibers are colored black, so the dyeing process is unfavorable, and the effect of shortening the production process is also large. The effectiveness of antifungal agents through over-staining
- Maximizes antifungal performance.

In addition, the polyamide fiber of the present invention may be interwoven with cotton yarn colored black, dark blue, or greyish, acrylic fiber, polyester fiber, or polyamide** that does not contain an antifungal agent. The antifungal polyamide fiber of the invention is colored black, and can be used for cross-knitting without standing out among other fibers, and can suitably exhibit antifungal performance.

Furthermore, the antifungal polyamide fiber of the present invention is used as uncolored cotton yarn,
These socks are knitted with acrylic fibers, polyester fibers, and polyamide fibers that do not contain antifungal agents.The dyes can be selected according to the color and will not stand out when dyed black, navy blue, or gray. Can be used. In this case, the carbon black contained acts as an agent to prevent the antifungal agent from falling off, and can suitably exhibit antifungal performance.

Other applications include carpets, sports clothing and baby products.

The present invention will be explained below with reference to Examples.

In the Examples, antifungal performance was determined by the following method.

Sabouraud medium was placed in a Petri dish with an inner diameter of s and s m, and on top of it was added Trichophyton (Mentadaraphytes) solution, and on top of that was a stockinette fabric made of yarn for evaluation with a length of 3 cm in diameter. K Place the cut out sample and heat at 28°C.
The sample was left standing in an o-RH atmosphere and cultured for 6 days, and the width of the inhibition zone around the sample was measured.

II Vaginal example: 2-naphthyl-
N-Methyl-N-(3-)ruyl)thiocarbamate Ill, 2-(4-thiazolyl)benzimidazole 1
1 part of bis-(barakttp phenyldiguanide)hexandino ide-chloride and 1 part of carbon black.
5 parts of an intrinsic viscosity 1.0Q nylon 6 master chip containing 1.0% nylon was blended and spun at a melting temperature of 255°C and a take-up speed of 100 m/min. /min.

The yarn was drawn at a draw ratio of 2.11 to obtain a drawn yarn of 24 denier filaments. Further, this drawn yarn was crimped using a Mitsubishi L8-6 Wooley processing machine at a heater temperature of 165°C to obtain processed yarn A1 of 70 tenier and 24 filaments! /Obtained.

For comparison, instead of the nylon 6 master chip of Example 1, Intrinsic Viscosity 1 containing only carbon black at all was used.
．． Processed yarn B was obtained in the same manner as in Example 1 except that 5 parts of nylon 6 master chip No. 00 was blended.

Each of these yarns is AO as stockinette knitted fabric.

A sample of BO was obtained. Furthermore, this stockinette fabric is heated to 90℃
After stirring in warm water for 20 minutes, air drying was performed. A sample of Bl was obtained.

Further, this stockinette fabric was placed in water at 25°C with s% of synthetic detergent added to the water and stirred for 24 hours. A sample of B2 was obtained.

The results of evaluating the antifungal performance of these samples are shown below.

Carbogalac hot water treatment laundry! Inhibition band width example Samplem 0 0.75- -
No bacterial strain growth Al #90℃2
0 minutes - No strain growth A2 #
// Comparative example where the strain did not grow for 24 hours at 25℃
BO---No bacterial strain growth
90℃ 20 minutes -10112-#25
℃ 24 hours 3 examples! Instead of the nylon 6 master chip of Example 1, nylon 6 master chips with various carbon black contents were used, and the carbon concentration was 0.2, 0.
3, 1.0, 2.0, 3.0-70 denier 24 filament textured yarn C of antifungal polyamide
, D, E, F, and G were obtained. Samples CO and CI were prepared in the same manner as in Example 1.

C2, DO, DI, D2, KO, El, E2, FO, F
1, F2, GO, GI, G2 were obtained.

These K were evaluated for silk spinning and anti-1M bacteria performance.

The yarn spinning was evaluated by measuring the time from the start of spinning to the first occurrence of yarn breakage.

o4% tl COII strain growth SezuC
1 bite O C24 o, a% 1o 1) o No strain growth Dl 12 D2 10 1, o% to EO@ No strain growth I 2 2.04 8 pOttPI 2 3, oqb o, sc.

I 2 carbon black concentration is 3. If it is less than 0%, thread breakage is likely to occur, which is a problem in terms of operation.

Claims (1)

[Claims] Polyamide containing at least IIi antifungal agent selected from the group consisting of pentuimida antifungal agents, 7enyl antifungal agents, and 7thiomate antifungal agents. An antifungal poly7amide chip made by blending O9s to 2.0% by weight of carbon black.