JPH08170217A - Antimicrobial fibrous material - Google Patents

Abstract

PURPOSE: To obtain the subject fibrous material, containing a polylysine compound having a specific polymerization degree and good in spinning properties without requiring complicated post-processing steps. CONSTITUTION: This antimicrobial material is obtained by including preferably 0.01-10wt.% polylysine compound of the formula [(n) is >=101, preferably according to kneading or impregnating or sticking, etc., to the fiber surface by post- processing. Thereby, the polymerization degree (n) of the polylysine compound is preferably >=20 from the viewpoint of the antimicrobial activities against microorganisms such as bacteria or fungi. The resultant fibrous material has a wide antimicrobial spectrum without any hazardousness to humans and is useful for clothes such as underwear or linings, medical textile products such as bandages, beddings such as sheets or interiors, etc., such as curtains.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a fibrous material having antibacterial properties.

[0002]

2. Description of the Related Art In recent years, various functionalities have been demanded of textile materials due to diversification of lifestyles, and in particular, there is a strong demand for antibacterial and deodorant properties of textile products from the viewpoint of comfort and hygiene. Especially in modern times where the living space is more comfortable and airtight, moderate temperatures and humidity are maintained even in winter, and various bacteria and fungi easily propagate and the damage is occurring frequently.

Further, it also propagates on clothes and the like that are soiled with sweat and food, causing deterioration of the product and giving offensive odor to give discomfort. In addition, it is considered that some of the skin diseases that have increased in recent years are caused by the bacteria that have abnormally propagated. Therefore, a hygienic and comfortable textile product that suppresses the growth of microorganisms has been desired, and various means have been used for the purpose of antibacterial properties.

The methods are roughly classified into old and new and 3
Divided into streets. One is the method that has been used until now, and organic tin, organic mercury compounds, aromatic halogen compounds, azole compounds, etc. have been used to impart antibacterial properties to fibers. However, although they have a high antibacterial effect against microorganisms, they are considerably harmful to the human body and cause skin inflammation, and the additives themselves are carcinogens. The use of textile products that come into contact with the human body is prohibited or prohibited.

On the other hand, the methods currently used as textile products include a post-processing method using a relatively safe organic antibacterial agent and a method of supporting metals on ceramic particles and kneading them into fibers. And two types. As the former post-processing method using an organic antibacterial agent, for example, by applying or coating an antibacterial agent such as a biguanide type or a quaternary ammonium salt type together with a resin binder such as polyurethane or polyacrylate on the surface of the cloth. Has been done. However, with these post-processing methods, the softness and texture of the resulting fabric, as well as the feeling of ventilation and moisture permeability, were reduced.

Further, in products obtained by these post-processing, if they are used for a long period of time, interfacial peeling occurs between the fiber or cloth and the binder due to friction, bending and stretching, and the durability and durability are poor. In order to improve the problem of the binder, a method in which an antibacterial agent is directly reacted with the fiber so as to have an effect is used. For example, a method has been adopted in which a functional group on the fiber surface is directly reacted with an antibacterial component by using a silicon-based coupling agent to impart functionality, and it is actually used for carpets and the like (JP-A-57-51874). ).

However, this method also has many problems such as insufficient washing resistance and the effect being exerted only on some fibers. Further, in any of the post-processing methods, there is a problem that the post-processing steps are complicated and the product cost is increased by these. On the other hand, in the latter method in which metals are supported on ceramic particles and kneaded into fibers, ceramic particles such as zeolite or phosphate type layered compound supporting metals such as silver and copper are used as fiber forming polymers. Methods such as kneading and spinning (Japanese Patent Application Laid-Open No. 59-133235), fine particles of only metal such as silver, copper, zinc and the like are directly dispersed and kneaded in a fiber-forming polymer and spinning (Japanese Patent Application Laid-Open No. Sho-39). 54-147220
Issue).

However, there are considerable problems in the method of kneading these inorganic particles to form fibers. For example, if the particle size of the inorganic particles is large, yarn breakage may occur during spinning, or the filter used to remove foreign matter in the spinning polymer solution may become clogged, causing unevenness such as fiber thickness unevenness and denier unevenness. To do. On the other hand, if the particle size of the inorganic particles is made extremely small, the cost rises sharply, and further, the technique of kneading by making the particles fine becomes quite difficult.

Further, the kneading of the inorganic particles causes severe mechanical damage such as at the spinneret, and in order to solve this, a method of blending the fibers with a sheath-core structure and incorporating the ceramic particles into the core has been investigated. However, the antibacterial effect was lost. Furthermore, in order to improve the antibacterial effect, there is also a technique of partially removing the polymer on the fiber surface with an alkali to expose the inorganic fine particle layer on the surface. However, this results in the loss of the effect due to the high cost of the alkali treatment, the variation of the product due to the difficulty of controlling the dissolution, and most fatally, the elution of the ceramic with the alkali.

In addition, there are a number of problems in practical use in the case of kneading and spinning such ceramic fine particles. For example, the underlying metal may be oxidized during use, resulting in coloration of the fiber, or fluffing or yarn breakage during the weaving process.
As for the antibacterial effect, the antibacterial effect is not sufficient though the antibacterial spectrum is wide. Furthermore, the fact is that it hardly exerts an effect on fungi such as mold.

As mentioned above, it should be noted that the harmfulness of the organic antibacterial agents that have been used in the past is known to extend to human beings, and that metal-ceramic-based antibacterial agents are also known. With respect to the antibacterial agents, it is feared that the metals contained therein induce allergies and skin diseases to the human body. As described above, conventional antibacterial fibers are not yet satisfactory in terms of their performance and safety.

[0012]

DISCLOSURE OF THE INVENTION An object of the present invention is to provide an antibacterial fibrous material having excellent antibacterial properties and high safety, which has good spinnability or can be obtained without complicated post-processing steps. To do.

[0013]

Means for Solving the Problems As a result of intensive studies on the antibacterial fiber, the present inventor has found that the above-mentioned problems can be achieved by adding a polylysine compound to the fiber, and arrived at the present invention. That is, the present invention is an antibacterial fiber, which contains a polylysine compound represented by the following chemical formula 1.

[0014]

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(Wherein n is 10 or more) The present invention is described in detail below. The polylysine compound used in the present invention is preferably a polymer in which n in the formula is 10 or more. More preferably, n is 20 or more. If the polymerization degree of the polylysine compound is too low (n is less than 10), the antibacterial property against microorganisms such as bacteria and fungi becomes low.

In the polylysine compound used in the present invention, the terminal amino group may be an amino group, but it may not be particularly an amino group. For example, ammonium salt, hydrochloride, sulfate, nitrate or organic acid salt. And the like, or a compound with a substance having a carboxyl group, a chlorosulfone group, an isocyanate group, or an epoxy group. On the other hand, the amino group existing at other than the terminal may be an amino group as it is or may be a salt type such as ammonium salt, hydrochloride, sulfate, nitrate, etc., but unlike the terminal amino group, most of them are compounds. must not.

That is, most of the antibacterial properties of the polylysine compound are those in which the amino group present at other than the terminal has an antibacterial effect, and when the amino group remains or is in the salt form, the antibacterial property is exerted. However, in the case of a compound with a substance having a carboxyl group, the antibacterial property is lost. Further, the number of amino groups other than the terminal of the polylysine compound has a number determined by the molecular weight of polylysine, that is, the value of n in the chemical formula 1, but all amino groups other than the terminal need not have a single chemical structure. Alternatively, a part of each may remain as an amino group or may take a salt form.

In the polylysine compound used in the present invention, the terminal carboxyl group may remain a carboxyl group,
In particular, it does not have to remain a carboxyl group, for example, a metal salt type with various alkali metals or alkaline earth metals or heavy metals such as copper, silver and iron, or a hydroxyl group, an amino group, an isocyanate group, an epoxy group. It may be in a compound form with a substance having

In any case, the polylysine compound used in the present invention has any chemical structure so long as it has a chemical structure capable of improving compatibility with the fiber-forming polymer or has an antibacterial effect. Of the fiber-forming polymer and should be selected according to the chemical structure of the fiber-forming polymer and the functional groups on the surface. The antibacterial fibrous material of the present invention can have antibacterial properties by the polylysine compound represented by the above chemical formula 1.

In the antibacterial fibrous material of the present invention, the addition amount of the polylysine compound is not particularly specified, and the concentration may be specified in the situation where the fiber product is used, but the addition amount of the polylysine compound is 0. It is preferably from 01% by weight to 10% by weight, more preferably 0.5% by weight.
It is above 5% by weight. However, simply considering the process stability and cost, the addition amount should be small as long as the antibacterial effect is exhibited.

The antibacterial fibrous material of the present invention is not particularly limited in the method of adding and mixing the polylysine compound, and various methods can be adopted. For example, in a method of wet spinning such as cupra or acrylic fiber, a method of directly mixing with a spinning stock solution, a method of previously dissolving a polylysine compound in another solution and then mixing with a spinning stock solution, or an undried state after spinning The fibers may be brought into contact with each other in the state of a uniform solution or dispersion of the polylysine compound to adhere or impregnate the surface or inside of the fibers.

In the case of melt-spinning like nylon or polyester, a method of directly mixing into the polymer at the time of spinning or a masterbatch containing a high concentration of a part of the raw material in advance is prepared at the time of spinning. For example, a method of adjusting the dilution to the concentration of In any case, the optimum method may be adopted depending on the kind of fiber material desired. Further, a natural fiber such as cotton, wool and silk may be post-processed with a polylysine compound. However, in these cases, attention should be paid to washing durability and the like.

The antibacterial fibrous material of the present invention contains a polylysine compound and is preferably applied to the surface of the fibrous material by kneading, impregnation or the like. It may be attached.
Considering the texture and washing resistance of the textile product, it is preferably contained in the inside of the textile material. The fiber material used in the antibacterial fibrous material of the present invention is not particularly limited as long as it is a general fibrous material.

For example, cellulosic fibers such as cupra fibers and rayon fibers, acetate fibers, acrylic fibers, polyparaphenylene fibers, vinylon fibers, polyurethane fibers, polyvinyl chloride fibers, nylon 6, nylon 66,
Examples thereof include polyamide fibers such as nylon 610, polyester fibers such as polyethylene terephthalate and polybutylene terephthalate, polyolefin fibers such as polyethylene and polypropylene, and natural fibers such as cotton, hemp, wool and silk.

When the antibacterial fibrous material of the present invention is spun from a mixed composition, it is desirable to adopt a spinning method suitable for the desired fiber material as in the mixing operation. For example, in the case of wet spinning, a method of wet spinning suitable for each fiber material (extrusion, solvent for desolvation and conditions of concentration temperature thereof, etc.) can be used, and in the case of melt spinning, an ordinary screw type or pressure type can be used. A melt-type extrusion spinning device can be used.

In the antibacterial fibrous material of the present invention, since the polylysine compound has a good compatibility with the fiber material, the polylysine compound is uniformly distributed in the fiber material to maximize its effect. The amount is relatively small. When conventional inorganic particles or metal particles are added to the fiber raw material and made into fibers to obtain antibacterial properties, the size of the particles is a big problem, and there are many productivity issues such as thread breakage, filter clogging, and difficulty in stretching. Was included in the factor. The antibacterial fibrous material of the present invention has much higher productivity and improved quality when the polylysine compound is added at the stage before spinning, as compared with the case where it is spun using conventional inorganic fine particles. It is a thing.

The antibacterial fibrous material of the present invention can be made into various kinds of composite yarns, hollow fibers, and modified fibers. Further, since the antibacterial effect is due to the polylysine compound on the surface of the fibers, sheath-core type composite spinning It is more effective to allow the polylysine compound to be present only in the sheath portion. Further, the antibacterial fibrous material of the present invention contains additives such as an antistatic agent, a stabilizer, an anti-yellowing agent, and a lubricant for spinning drawability and texture, as long as the antibacterial property is not impaired. You may stay.

The antibacterial fibrous material of the present invention is a short fiber,
It may be a long fiber and may be used in any form such as roving, spun yarn, sewing yarn and other yarns, woven fabrics, knitted fabrics, nets, webs, non-woven fabrics and the like. Further, the antibacterial fibrous material of the present invention can be used in combination with general-purpose fibers and fibers having other functions by mixing fibers, mixed spinning, mixed twisting, mixed woven, mixed knitting, etc. The textile product can be made in a more preferable manner for the person. Of course, these can be subjected to various general-purpose processing treatments such as dyeing and resin processing, if necessary, to complete the intended product.

It should be noted that the antibacterial fibrous material of the present invention is highly safe to the human body and skin. As mentioned earlier, the harmfulness of organic antibacterial agents that have been used in the past is known to extend to humans, and even in metal-ceramic antibacterial agents, the metal contained in them is the human body. It is feared that it will induce allergies and skin diseases. However, the polylysine compound is known as a natural food additive, is used in many foods, and has been confirmed to be safe to the skin. Furthermore, since it has an appropriate moisturizing property, an additional effect is expected when it is used for clothing.

Since the antibacterial fibrous material of the present invention has excellent antibacterial and deodorant properties and high safety and hygiene, it can be used for general clothing products, auxiliary materials, and other materials used for underwear, socks, blouses, various linings, etc. , For example, bandages, skin patch base fabrics, bed sheets and gowns for clothing, medical textiles such as surgical gowns, and, for example, batting and side cloths of blankets, blankets, sheets, pillowcases,
Textiles used for interiors and bedding such as curtains, cloths, carpets, towels, foot wipes, wallpaper, food packaging naps, food fields such as bento insoles, etc. It can be used for.

[0031]

The present invention will be described in more detail with reference to the following examples. Unless otherwise specified,% by weight is shown. The method for evaluating the antibacterial / deodorant fiber in the present invention will be described below. (1) Bacterial sterilization rate It was measured by the bacterial count method indicated by the Textile Products Sanitary Processing Council. This measuring method is a modification of AATCC 100-1982. That is, it is a method of contacting a sample with a test bacterium diluted with a nutrient medium and examining the increase or decrease in the number of bacteria. 0.2 g of the cloth sample is put in a bottle with a screw cap of about 30 ml, sterilized by moist heat, and 10 ⁶ cells / ml in a broth medium containing a buffer solution.
Uniformly inoculate 0.2 ml of the bacterial solution diluted to 35-37
After leaving at 18 ° C. for 18 hours, 20 ml of sterile buffered saline is added and shaken well, and the increase / decrease value of the bacteria is determined by the agar dilution method. In this method, the effect is judged by the difference in increase / decrease value of the bacteria according to the following formula. The target bacteria were Staphylococcus aureus (ATCC6538P) as a gram-positive bacterium, and Klebsiella pneumoniae (ATCC4352) as a gram-negative bacterium.

Difference in increase / decrease value of bacteria = log (B / A) -log
(C / A) = log (B / C) A: average number of bacteria immediately after inoculation of unprocessed sample B: average number of bacteria after 18 hours of culture in unprocessed sample C: average number of bacteria after 18 hours of culture in processed sample In the number measurement method, if log (B / A)> 2, the measurement is effective, and if log (B / A) ≦ 2, retest is required.

Furthermore, the antibacterial effect is log (B / C)
The larger the value, the higher the antibacterial activity. Also, when log (B / C)> 1.6, it is recognized as a standard with antibacterial properties, and in particular, it is certified as an antibacterial / deodorant processed product by the Textile Products Sanitary Processing Council. (2) Antifungal property Based on the halo method (JIS L1902-1990). That is, PDA medium (10 ml) for storage of Trichophyton
The conidia of one test tube of Trichophyton which grew for 2 weeks were dispersed in 10 ml of spore dispersant (0.005% dioctylsulfosuccinic acid) together with hyphae, filtered with sterile absorbent cotton,
It was dissolved and added to 100 ml of PDA medium kept at 45 ° C., and 10 ml was dispensed per Petri dish to prepare a plate.

A cloth made of the obtained fibers has two sides.
It was cut into a square size of cm, placed on the prepared medium, and cultured at 37 ° C. for 48 hours. As an evaluation,
The case where the growth of the bacteria was not recognized around the sample cloth was defined as (-), and the case where the growth was recognized was defined as (+). (3) Washing test It was conducted according to JIS L0217-103 method. A synthetic detergent for clothing was added and dissolved in 1 liter of water having a liquid temperature of 40 ° C. to prepare a washing liquid. A bath ratio of 1: 3 to this washing liquid
A sample and a load cloth as needed were added so that the value became 0, and the operation was started. After treatment for 5 minutes, the operation was stopped, the sample and the load cloth were dehydrated by a dehydrator, and then the washing liquid was replaced with fresh water at room temperature, rinsed for 2 minutes with the same bath ratio, and air dried.

After the antibacterial cloth was worn for 8 hours a day, the above operation was performed, and this was repeated 5 times, 10 times, and 20 times, and the cloth after each treatment was used as a measurement sample.

[0036]

Example 1 A polylysine compound (Chemical Formula 1) was added to a spinning solution of copper-ammonia rayon fiber prepared according to a known method.
In formula (n), an aqueous solution (25% by weight) of about 25) was added to prepare a spinning dope of about 2000 poise. The composition of the spinning solution was 10% by weight of cellulose, 7% by weight of ammonia, 3.6% by weight of copper and 0.1% by weight of polylysine compound, and the ratio of the polylysine compound to the cellulose component was about 1% by weight.

The spinning dope thus prepared was spun according to a conventional wet-flow spinning method. The spinning conditions are: a spinneret hole diameter of 0.6 mm; a spinneret hole number of 45;
The temperature of the coagulating liquid to be injected into the one-step funnel, that is, the temperature of hot water is 34 ° C., the injection amount is 420 m / min, the temperature of the coagulating liquid to be injected into the two-stage funnel is 67 ° C., the injection amount is 420 m / min, A fiber of 75d was obtained by spinning at a spinning speed of 135 m / min.

No problems such as yarn breakage occurred at the spinning stage, and the spinnability was good. The obtained fiber was knitted in a tubular shape, and this knitted fabric was dyed and finished by a conventional method.
The antibacterial performance of this knitted fabric and the washing resistance of the antibacterial performance were determined by the above method, and the results are summarized in Table 1.

[0039]

Example 2 A knitted fabric was obtained in the same manner as in Example 1 except that the addition amount of the polylysine compound was 0.25% by weight with respect to the cellulose, and the performance was evaluated. No problems such as yarn breakage occurred at the spinning stage, and the spinnability was good. These results are summarized in Table 1.

[0040]

Example 3 In the same manner as in Example 1, only a polylysine compound was added in an amount of 0.1% by weight based on cellulose, and a knitted fabric was prepared in the same procedure as in Example 1 and evaluated. No problems such as yarn breakage occurred at the spinning stage, and the spinnability was good. These results are summarized in Table 1.

[0041]

Example 4 In the same manner as in Example 1, only the method of adding the polylysine compound was changed to obtain the target fiber. That is, a sample (50% by weight of polylysine compound content) prepared by encapsulating a polylysine compound in cyclodextrin was added to and mixed with a stock solution to prepare a spinning stock solution. At this time, the sample was adjusted so as to be 0.5% by weight with respect to cellulose. The procedure was the same as in Example 1 except for the above conditions, and evaluation was performed.

No problems such as yarn breakage occurred at the spinning stage, and the spinnability was good. These results are summarized in Table 1.

[0043]

Example 5 The target fiber was obtained by changing only the method of applying the polylysine compound to the fiber. That is, spinning is carried out in the same manner as in Example 1 except that the polylysine compound is not added, and then the fibers in the state of still containing water are added at the stage of obtaining cellulose fibers and before finally drying and solidifying the fibers. , The polylysine compound was applied as an aqueous solution.

At this time, the addition amount of the polylysine compound was adjusted to 0.2% by weight with respect to the cellulose. After adding polylysine, it was dried and made into a knitted fabric by the same procedure as in Example 1, and the physical properties were evaluated. No problems such as yarn breakage occurred at the spinning stage, and the spinnability was good. The texture of the obtained cloth was also good. These results are shown in Table 1.
Summarized in.

[0045]

[Comparative Example 1] A fiber knitted product was formed into a fiber by the same procedure as in Example 1 except that the polylysine compound was not added, and the physical properties were evaluated. These results are summarized in Table 1.

[0046]

[Comparative Example 2] Fiberizing was performed in the same manner as in Example 1 except that a silver ceramic antibacterial agent (Shinagawa Fuel Co., Ltd., trade name, Zeomic) was used in place of the polylysine compound (addition amount: 3% by weight). ), A tubular knit, and the physical properties were evaluated. Many yarn breakages occurred at the spinning stage, and the obtained fibers were colored. The results of this antibacterial evaluation are summarized in Table 1.

[0047]

Example 6 A non-woven fabric of copper-ammonium cellulose fiber continuous filament was prepared according to the method for producing regenerated cellulose non-woven fabric described in JP-B-52-6381. At this time, the spinning solution of copper ammonia cellulose is
The polylysine compound was adjusted to 0.3% by weight with respect to the amount of cellulose as a dry nonwoven fabric.

The resulting nonwoven fabric had a single yarn diameter of 1.5d and a basis weight of 10 g / m ³ . No problems such as yarn breakage occurred at the spinning stage, and the spinnability was good. These results are summarized in Table 1.

[0049]

Example 7 The target nonwoven fabric was obtained by changing the method of applying the polylysine compound to the fiber only, and following the same procedure as in Example 6. That is, spinning was performed in the same manner as in Example 6 except that the polylysine compound was not added. Next, at the stage of obtaining a cellulosic nonwoven fabric, the polylysine compound was applied in the form of an aqueous solution to the fibers which still contained water before the fibers were finally dried and solidified. At this time, the addition amount of the polylysine compound is 0.2% by weight with respect to the cellulose.
It was adjusted to become. After adding the polylysine compound and drying, the target non-woven fabric was evaluated.

No problems such as yarn breakage occurred at the spinning stage, and the spinnability was good. These results are summarized in Table 1.

[0051]

[Comparative Example 3] A nonwoven fabric was prepared and evaluated in the same manner as in Example 6 except that the polylysine compound was not added. These results are summarized in Table 1.

[0052]

Example 8 A copolymer consisting of 90.1% by weight of acrylonitrile and 9.1% by weight of methyl acrylate and 0.8% by weight of sodium methacryl sulfonate was dissolved in 70% by weight of concentrated nitric acid to prepare a 16. A solution having a copolymer concentration of 3% by weight was prepared. To the solution, 0.5 part of a polylysine compound was added to 100 parts of the copolymer, stirred for 30 minutes, and defoamed to obtain a spinning dope. This was subjected to processes such as spinning, washing with water, drawing, drying, and heat treatment for relaxation by a known method to obtain a fiber.

No problems such as yarn breakage occurred at the spinning stage, and the spinnability was good. The obtained fiber was knitted in a tubular shape, and this knitted fabric was dyed and finished by a conventional method.
The antibacterial performance of this knitted fabric and the washing resistance of the antibacterial performance were determined by the above method, and the results are summarized in Table 1.

[0054]

Example 9 The target fiber was obtained by changing only the method of applying the polylysine compound to the fiber. That is, except that the polylysine compound was not added, spinning was carried out in the same manner as in Example 8, and then at the stage of obtaining acrylic fibers, the fibers in the state of still containing water before finally being dried and solidified. Then, the polylysine compound was applied as an aqueous solution. At this time, the addition amount of the polylysine compound was adjusted to be 0.2% by weight with respect to the acrylic polymer.

After adding the polylysine compound, it was dried to obtain a fiber, which was knitted by the same procedure as in Example 8 and evaluated. No problems such as yarn breakage occurred at the spinning stage, and the spinnability was good. The texture of the obtained cloth was also good. These results are summarized in Table 1.

[0056]

Comparative Example 4 A fiber was prepared in the same manner as in Example 8 except that the polylysine compound was not added, and then a tubular knitted product of acrylic fiber was prepared in the same procedure as in Example 1 and evaluated. These results are summarized in Table 1.

[0057]

Example 10 A nylon 12 polymer chip having a melting point of 180 ° C. and a blend of 1% by weight of a polylysine compound was melt-spun at a melting temperature of 210 ° C. and stretched to obtain an antibacterial synthetic fiber. This was knitted by the same procedure as in Example 1 and evaluated. No problems such as yarn breakage occurred at the spinning stage, and the spinnability was good. The texture of the obtained cloth was also good. These results are summarized in Table 1.

[0058]

Example 11 A copolymer of nylon 6 and nylon 66 having a melting point of 180 ° C. (nylon 6: nylon 6
(6 = 75: 25 weight ratio) A 1 wt% blend of polylysine compound was melt-spun at a melting temperature of 210 ° C. and stretched to obtain an antibacterial synthetic fiber. This was knitted by the same procedure as in Example 1 and evaluated.

No problems such as yarn breakage occurred in the spinning stage, and the spinnability was good. The texture of the obtained cloth was also good. These results are summarized in Table 1.

[0060]

[Comparative Example 5] A nylon knitted tubular product was evaluated by the same method and procedure as in Example 11 except that the polylysine compound was not added. These results are summarized in Table 1.

[0061]

Example 12 The same polymer as in Example 11 was added with 0.5% by weight of polylysine compound and blended at 200 ° C. using a twin-screw extruder, and then this was mixed with a screw type melt spinning machine having a round hole nozzle. At spinning block temperature of 210 ℃
What was extruded into the air stream from the die heated to above was collected on a moving screen to obtain a nylon nonwoven fabric having a basis weight of 120 g / m ³ .

No problems such as yarn breakage occurred at the spinning stage, and the spinnability was good. The texture of the obtained cloth was also good. The antibacterial results are summarized in Table 1.

[0063]

Comparative Example 6 A nylon nonwoven fabric was obtained by the same method and procedure as in Example 12 except that the polylysine compound was not added. The results are summarized in Table 1.

[0064]

Comparative Example 7 In the same manner as in Example 12, a silver ceramic antibacterial agent (Shinagawa Fuel Co., Ltd., trade name, Zeomic) was used in place of the polylysine compound (addition amount: 3% by weight), and the same procedure was followed. It was evaluated as a non-woven fabric. Many yarn breakages occurred at the spinning stage, and the obtained fibers were colored. The results of this antibacterial evaluation are summarized in Table 1.

[0065]

[Table 1]

[0066]

INDUSTRIAL APPLICABILITY The antibacterial fibrous material of the present invention has a broader antibacterial spectrum than conventional products and is an antibacterial / antifungal fibrous material excellent in washing durability and has a great effect. Especially, it is effective against fungi such as fungi. From these performances and effects, for example, general clothing products used for underwear, socks, blouses, various linings, etc., for example, bandages, sanitary cloths, wipers, skin patch base cloths, clothing bed sheets and gowns, surgery Medical textiles such as garments, as well as padding and side cloths for blankets, blankets, sheets, pillowcases,
It can be used for various purposes such as curtains, cloths, carpets, towels, wallpaper and other interior goods, and textile products used for bedding.

Also, unlike the conventional method for producing antibacterial fibers, when added at the spinning stage, the moldability of the fibers is easy and the productivity is good, and as a result, the antibacterial fibrous material, the above fibers, etc. Products can be provided at low cost.

[Procedure amendment]

[Submission date] December 15, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

Embedded image (In the formula, n is 10 or more)

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

[0014]

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Claims (1)

[Claims] 1. An antibacterial fiber, comprising an antibacterial fiber containing a polylysine compound represented by the following chemical formula 1. Embedded image (In the formula, n is 10 or more)