JP2013087082A - Agent for imparting antibacterial/antifungal properties, fiber processing agent, and method for producing antibacterial/antifungal fibers - Google Patents

Abstract

PROBLEM TO BE SOLVED: To address the problem of stably dispersing a pyridine antibacterial/antifungal agent in a liquid, and appropriately applying this pyridine antibacterial/antifungal agent to fibers, as well as appropriately imparting antibacterial/antifungal properties to fibers, without causing an adverse effect even when the agent is used together with processing agents used during processing treatment of the fibers, such as dyes and fabric conditioners.SOLUTION: An agent for imparting antibacterial/antifungal properties that contains the pyridine antibacterial/antifungal agent and a modified polysaccharide having a reduced number of hydroxyl groups is used, and this agent for imparting antibacterial/antifungal properties is applied to fibers, which are subsequently heat-treated.

Description

  The present invention relates to an antibacterial / antifungal agent, a fiber processing agent, and a method for producing antibacterial / antifungal fibers. In particular, in the case of imparting antibacterial / antifungal properties to fibers using pyridine-based antibacterial / antifungal agents, the above-mentioned pyridine-based antibacterial / antifungal agents are stably dispersed in the liquid. In addition to ensuring that pyridine-based antibacterial and antifungal agents are properly applied to fibers, antibacterial and antifungal agents are used when processing fibers with various treatment agents such as dyes and softeners. It is characterized by the fact that the anti-fungal / anti-fungal treatment can be appropriately performed together with other treatments without causing the mold imparting agent to agglomerate or foam. It is what you have.

  Conventionally, sanitary orientation for various textile products such as textile products for clothing, duvet covers, curtains, towels and wall cloth (wallpaper) has increased, and processing has been performed to impart antibacterial and antifungal properties to various textile products. In particular, in recent years, problems such as nosocomial infections have been greatly highlighted, and research into antibacterial and antifungal processing technologies for various textile products in medical facilities, including surgical gowns at medical sites, has been conducted. I'm in a hurry.

  In addition, when antibacterial and antifungal properties are imparted to fiber products made of synthetic fibers, etc., antibacterial and antifungal agents are kneaded into the spinning dope and spun to create antibacterial and antifungal properties. Manufacture fibers and use such fibers alone or in combination with other fibers to obtain fibers such as antibacterial / antifungal fiber products, or antibacterial / antifungal fibers such as fibers or fiber products. A chemical such as an antifungal agent is attached later to impart antibacterial and antifungal properties to fibers.

  Here, when a spinning agent is kneaded with an antibacterial / antifungal agent or the like in the spinning solution as described above, the antibacterial agent or antifungal agent or the like precipitates as crystals on the base during the spinning stage, and the yarn breakage occurs. There were problems in spinning such as frequent occurrences.

  On the other hand, when a drug such as an antibacterial / antifungal agent is attached later to fibers such as fibers or fiber products to impart antibacterial / antifungal properties to the fibers, the washing durability is not always sufficient. In particular, there was a problem that the antibacterial and antifungal properties of the fibers were greatly reduced, particularly when industrial washing at 60 to 85 ° C. was repeated many times.

  In recent years, as an antibacterial / antifungal agent having excellent washing durability, it has been proposed to use a pyridine-based antibacterial / antifungal agent such as zinc pyrithione as shown in Patent Documents 1 to 4. .

  Here, when a pyridine antibacterial / antifungal agent such as zinc pyrithione is attached to fibers to impart antibacterial / antifungal properties to the fiber, the pyridine antibacterial / antifungal agent is used in a solvent such as water. Generally, the above antibacterial / antifungal agent is powdered and dispersed in a liquid such as water, so that the antibacterial / antifungal agent is dispersed in this manner and adhered to the fibers. I have to.

  In addition, when the pyridine antibacterial / antifungal agent is adhered to the fiber in the state of dispersion in which the pyridine antibacterial / antifungal agent is dispersed, the pyridine antibacterial / antifungal agent is stably maintained in a state dispersed in the liquid. In general, various surfactants such as anionic, cationic, and nonionic surfactants are added.

  In addition, when the dispersion liquid in which the pyridine-based antibacterial / antifungal agent is dispersed as described above is attached to the fibers to impart antibacterial / antifungal properties to the fibers, the antibacterial / antifungal agents described above are generally used. These treatments are performed together by using various treatment agents such as dyes and softeners together with the dispersion liquid in which is dispersed.

  Here, as described above, a dispersion in which a pyridine type antibacterial / antifungal agent is dispersed and an anionic surfactant added thereto and a treatment agent containing a cation may be used together, or a cationic type If a surfactant added with a treatment agent containing an anion is used together, these will react to form agglomeration, and the pyridine antibacterial / antifungal agent can be dispersed appropriately. Disappear. For this reason, when an anionic or cationic surfactant is used, the types of treatment agents that can be used are limited, and treatment with an appropriate treatment agent cannot be performed, and antibacterial and antifungal properties are prevented. In the case where the processing to be applied and the other processing are performed separately, there is a problem that the number of processing steps increases and the cost is high.

  Furthermore, when various surfactants such as anionic, cationic, and nonionic surfactants are added to the dispersion in which the pyridine antibacterial / antifungal agent is dispersed as described above, foaming occurs, and pyridine There were also problems such as the antibacterial / antifungal agent being unable to be properly applied to the fibers.

JP 2000-8275 A JP 2001-288014 A JP 2001-288015 A JP 11-335202 A

  The present invention uses a pyridine-based antibacterial / antifungal agent as described above to impart antibacterial / antifungal properties to fibers, etc., so that the pyridine-based antibacterial / antifungal agent is stable in the liquid. When dispersed, this pyridine-based antibacterial and antifungal agent is properly imparted to the fibers, and when used with various treatment agents such as dyes and softeners, the fibers are processed. In addition, the antibacterial and antifungal property-imparting agent does not agglomerate or foam, and the treatment that imparts antibacterial and antifungal properties to fibers can be performed properly together with other treatments. It is an object to do.

  In the antibacterial / antifungal property-imparting agent of the present invention, a pyridine-based antibacterial / antifungal agent and a modified polysaccharide having a reduced hydroxyl group are contained in order to solve the above-described problems.

  Moreover, in the textile processing agent in this invention, the above antibacterial and antifungal property imparting agents were contained.

  In the method for producing antibacterial / antifungal fibers according to the present invention, the above-mentioned antibacterial / antifungal agent is applied to the fibers, and then the fibers are heat-treated.

  In the antibacterial / antifungal property-imparting agent of the present invention, the pyridine-based antibacterial / antifungal agent and the modified polysaccharide having a reduced hydroxyl group are contained as described above. When dispersed in a liquid such as water, the modified polysaccharide having a reduced hydroxyl group makes the pyridine antibacterial / antifungal agent stably dispersed in the liquid, and Even when cations and anions are contained in various treatment agents such as dyes and softeners, as in the case of adding anionic or cationic surfactants, there is no occurrence of agglomeration by reaction. In addition, pyridine antibacterial and antifungal agents are maintained in a properly dispersed state, and foaming occurs when various anionic, cationic, and nonionic surfactants are added. What happens No.

  For this reason, the antibacterial / antifungal imparting agent in which the pyridine-based antibacterial / antifungal agent is dispersed in a liquid so that the pyridine-based antibacterial / antifungal agent can be appropriately imparted to the fibers. In addition, when processing fibers with various treatment agents such as dyes and softeners, pyridine antibacterial and antifungal agents are appropriate even if the treatment agent contains cations or anions. The above antibacterial and antifungal property-imparting agents can be maintained without being limited to the types of various treatment agents such as dyes and softeners that can be used without being foamed. Thus, the treatment for imparting antibacterial and antifungal properties to the fibers and the treatment with other treatment agents can be appropriately performed together.

  Next, the antibacterial / antifungal property-imparting agent, the fiber processing agent and the method for producing the antibacterial / antifungal fiber according to the embodiment of the present invention will be specifically described. In addition, the antibacterial / antifungal property-imparting agent, the fiber processing agent and the method for producing the antibacterial / antifungal fiber according to the present invention are not particularly limited to those shown in the following embodiments, and the gist thereof In the range which does not change, it can change suitably and can implement.

  In the antibacterial / antifungal agent of the present invention, examples of the pyridine-based antibacterial / antifungal agent include 2-chloro-6-trichloromethylpyridine and 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, zinc pyrithione, etc. Pyridine compounds can be used. Especially as a pyridine-based antibacterial and antifungal agent because it has good affinity with fibers, adheres firmly to the fibers, provides high washing durability, and does not discolor the fibers. Zinc pyrithione is preferably used.

  Moreover, in the antibacterial / antifungal property-imparting agent of the present invention, for example, polysaccharide ethers, polysaccharide esters, polysaccharide amides, and the like can be used as the modified polysaccharide having a reduced hydroxyl group. More specifically, hemicellulose, gum arabic, gum tragacanth, carrageenan, xanthan gum, guar gum, tara gum, far selelain, tamarind seed polysaccharide, karaya gum, pectin, pullulan, gellan gum, locust bean gum, carboxymethylcellulose (CMC), methylcellulose (MC), Ethylcellulose (EC), hydroxymethylcellulose (HMC), hydroxyethylcellulose (HEC), hydroxypropylcellulose (HPC), hydroxyethylmethylcellulose (HEMC), hydroxyethylethylcellulose (HEEC), hydroxypropylmethylcellulose (HPMC), hydroxypropylethylcellulose (HPEC) ), Hydroxyethyl hydroxypropyl cellulose (HEHP) ), Sulfoethyl cellulose, dihydroxypropyl cellulose (DHPC), and the like. In particular, cellulose ether, cellulose ester, and cellulose amide are used to increase the dispersion stability of the above-mentioned pyridine type antibacterial and antifungal agents. It is preferable.

  In the antibacterial / antifungal property-imparting agent of the present invention containing the pyridine-based antibacterial / antifungal agent and the modified polysaccharide having a reduced hydroxyl group as described above, the pyridine-based antibacterial / antifungal agent described above is used. If the amount of pyridine antibacterial / antifungal agent is too small to disperse the agent in water or other liquids, low-concentration products will be sold and it will be uneconomical. When the amount is too large, it becomes difficult to pulverize and disperse the pyridine antibacterial and antifungal agent. For this reason, the amount of the pyridine type antibacterial / antifungal agent in the dispersion of the antibacterial / antifungal property imparting agent is set in the range of 5 to 50% by weight, preferably in the range of 10 to 40% by weight.

  In addition, when dispersing the pyridine antibacterial / antifungal agent in a liquid such as water, reducing the particle size of the pyridine antibacterial / antifungal agent requires a lot of time for grinding and the like. On the other hand, the pulverized particles may re-aggregate. On the other hand, if the particle size of the pyridine antibacterial / antifungal agent is large, the weight of the powder is heavy and the dispersion stability deteriorates. It becomes difficult to obtain. For this reason, it is preferable that the average particle diameter of the pyridine type antibacterial / antifungal agent in the dispersion of the antibacterial / antifungal agent is in the range of 0.1 to 1.0 μm, more preferably 0.3 to The amount of the pyridine antibacterial / antifungal agent in the range of 0.7 μm and 2 μm or more is 5% by weight or less, preferably 3% by weight or less, based on the total amount of the pyridine antibacterial / antifungal agent. More preferably, it is made to be 1% by weight or less.

  In addition, in order to ensure that the pyridine-based antibacterial / antifungal agent is stably dispersed when the modified polysaccharide having a reduced hydroxyl group is contained in the dispersion of the antibacterial / antifungal property-imparting agent. The amount of the modified polysaccharide in the dispersion is preferably in the range of 0.05 to 1% by weight. If the amount of the modified polysaccharide is small, the pyridine antibacterial / antifungal agent cannot be stably dispersed. On the other hand, when the amount of the modified polysaccharide is increased, the viscosity becomes too high, so that it does not exhibit a liquid state and is difficult to use.

  In the antibacterial / antifungal agent of the present invention, even when the concentration of the pyridine antibacterial / antifungal agent in the dispersion is increased, the pyridine antibacterial / antifungal agent is stably dispersed. In order to achieve this, it is preferable to add a wetting agent. Here, as such a wetting agent, polyethylene glycol, glycol-based solvent, glycerin is used so as not to react even if cations and anions are contained in various treatment agents such as dyes and softeners as described above. It is preferable to use nonionic wetting agents such as polyvinyl alcohol and alcohol solvents.

  In the present invention, the antibacterial / antifungal fibers are produced using the antibacterial / antifungal agent-dispersed dispersion in which the pyridine antibacterial / antifungal agent is dispersed in the liquid as described above. Applies the antibacterial / antifungal agent-dispersing agent to the fibers and then heat-treats the fibers.

  Here, as the fibers, natural fibers such as cotton, synthetic fibers such as polyester fibers, nylon fibers, polyacrylonitrile fibers, semi-synthetic fibers such as acetate fibers, and fibers obtained by mixing these fibers can be used. In particular, synthetic fibers such as polyester fibers, nylon and acrylonitrile are desirable because high durability can be obtained by penetration and fixation of pyridine antibacterial and antifungal agents in the polymer resin. Fibers are most desirable because higher durability is obtained due to the high degree of polymerization of the polymer resin.

  Examples of the form of fibers include, for example, yarn, knitted fabric, woven fabric, cloth, and various products. Examples of the product include clothing, bedding, rugs, curtains, indoor wall cloth, etc., particularly hospitals. Products such as surgical clothes, nursing clothes, bedclothes such as sheets and covers, divider curtains, bandages, towels, and towels used in medical facilities.

  Here, in applying the antibacterial / antifungal property-imparting agent dispersion liquid to the fibers as described above, the above-mentioned dispersion liquid may be used as it is or according to the type of the fiber or the processing purpose.・ Dilute so that the concentration of the antifungal agent is appropriate.

  Then, as described above, the dispersion of the antibacterial / antifungal property imparting agent is applied to the fibers, and when the fibers are heat-treated, the fibers are immersed in the above dispersion or a diluted solution thereof, and atmospheric pressure is applied. Alternatively, an in-bath method in which heat treatment is performed in a bath at a temperature of 80 to 160 ° C. under pressure is used, or fibers are impregnated or adhered with the above dispersion or a diluted solution thereof, and then a temperature of 110 to 230 ° C. It is possible to use an air method in which heat treatment is performed in the air.

  Here, when antibacterial and antifungal properties are imparted to the fibers by the above-mentioned bath method, for example, in a pressure-resistant sealed container, a pyridine type antibacterial and antifungal agent is 0. 0 with respect to the weight of the fibers to be treated. Add the above dispersion or dilution thereof so as to be about 001 to 20% by weight, immerse the fibers in this, and heat-treat at a temperature of 80 to 160 ° C. under a pressure of about 0 to 620 KPa. Like that. The pressure and temperature during the heat treatment in the bath vary slightly depending on the type of fiber, but in the case of polyester fiber, nylon, acetate or acrylic at a temperature of about 100 to 140 ° C. under pressure. In the case of fibers, it is desirable to treat at a temperature of about 80 to 100 ° C. under normal pressure. In either case, the processing time may be about 30 seconds to 2 hours.

  In addition, when antibacterial and antifungal properties are imparted to fibers by the above-mentioned air method, for example, the pyridine type antibacterial and antifungal agent is about 0.001 to 20% by weight with respect to the weight of the fibers to be treated. The above-mentioned dispersion or its diluted solution is immersed in the above-mentioned fibers and impregnated, or the above-mentioned dispersion or its diluted solution is attached to the above-mentioned fibers by spraying or the like. The heat treatment is performed at a temperature of 110 to 230 ° C. by dry heat or wet heat in the air. In addition, the temperature at the time of heat treatment in the air varies slightly depending on the type of fiber, but in the case of polyester fiber, the temperature is about 160 to 230 ° C., and in the case of nylon, acetate or acrylic fiber It is desirable to perform the treatment at a temperature of about 70 to 150 ° C. In any case, the processing time may be about 10 seconds to 10 minutes.

  In addition, in addition to various treatment agents such as dyes and softeners, other treatments may be used to impart antibacterial and antifungal properties to fibers using the antibacterial and antifungal property imparting agent dispersion liquid as described above. When performed together, the antibacterial / antifungal agent-dispersing liquid described above uses a modified polysaccharide with a reduced hydroxyl group to disperse the pyridine-based antibacterial / antifungal agent. Even if various treatment agents such as cation agents contain cations and anions, they do not react and cause aggregation as in the case of using anionic or cationic surfactants. -Anti-fungal agents will be maintained in a properly dispersed state. In addition, when a modified polysaccharide having a reduced hydroxyl group is used, foaming does not occur as in the case of adding various surfactants such as anionic, cationic, and nonionic surfactants.

  Next, the antibacterial and antifungal property imparting agent according to the example of the present invention is compared with the antibacterial and antifungal property imparting agent according to the comparative example. It is clarified that aggregation and foaming are suppressed when used together with an anionic or nonionic treatment agent. In addition, in the antibacterial and antifungal imparting agents of Examples and Comparative Examples, zinc pyrithione was used as the pyridine-based antibacterial and antifungal agent.

Example 1
In Example 1, 5% by weight of zinc pyrithione (hereinafter abbreviated as ZPT) was added to water, and this was pulverized by a ball mill using glass balls, and then modified with a reduced number of hydroxyl groups. A saccharide carboxymethyl cellulose (hereinafter abbreviated as CMC) was added in an amount of 0.7% by weight and stirred for 30 minutes to obtain a dispersion of an antibacterial / antifungal agent.

(Example 2)
In Example 2, 10% by weight of ZPT and 1% by weight of polyethylene glycol (hereinafter abbreviated as PEG) as a wetting agent are added to water and pulverized by the above-mentioned ball mill. 0.7% by weight of saccharide CMC was added and stirred for 30 minutes to obtain a dispersion of an antibacterial and antifungal agent.

(Example 3)
In Example 3, 20% by weight of ZPT and 1% by weight of PEG as a wetting agent were added to water, and this was pulverized by the above ball mill, and then CMC of the modified polysaccharide was 0.5% by weight. This was added and stirred for 30 minutes to obtain a dispersion of an antibacterial / antifungal agent.

Example 4
In Example 4, 40% by weight of ZPT and 1% by weight of PEG as a wetting agent were added to water, and this was pulverized by the above ball mill, and then CMC of the modified polysaccharide was 0.3% by weight. This was added and stirred for 30 minutes to obtain a dispersion of an antibacterial / antifungal agent.

(Example 5)
In Example 5, 50% by weight of ZPT and 1% by weight of PEG as a wetting agent were added to water, and this was pulverized by the above ball mill, and then 0.3% by weight of xanthan gum as a modified polysaccharide. This was added and stirred for 30 minutes to obtain a dispersion of an antibacterial / antifungal agent.

(Example 6)
In Example 6, 20% by weight of ZPT and 2% by weight of PEG as a wetting agent were added to water, and this was pulverized by the above-mentioned ball mill, and then the modified polysaccharide methylcellulose (hereinafter abbreviated as MC). 0.5% by weight was added and allowed to stir for 30 minutes to obtain a dispersion of an antibacterial / antifungal agent.

(Example 7)
In Example 7, 20% by weight of ZPT and 3% by weight of glycerin as a wetting agent were added to water, and this was pulverized by the above ball mill, and then CMC of the modified polysaccharide was 0.3% by weight. This was added and stirred for 30 minutes to obtain a dispersion of an antibacterial / antifungal agent.

(Example 8)
In Example 8, 20% by weight of ZPT and 5% by weight of diethylene glycol monoethyl ether as a wetting agent were added to water, and this was pulverized by the above ball mill. 5% by weight was added and stirred for 30 minutes to obtain a dispersion of an antibacterial / antifungal agent.

Example 9
In Example 9, 40% by weight of ZPT and 3% by weight of polyvinyl alcohol (hereinafter abbreviated as PVA) as a wetting agent were added to water, and this was pulverized by the above-mentioned ball mill. 0.5% by weight of saccharide hydroxyethylcellulose (hereinafter abbreviated as HEC) was added and stirred for 30 minutes to obtain a dispersion of an antibacterial and antifungal agent.

(Example 10)
In Example 10, 40% by weight of ZPT and 3% by weight of PVA as a wetting agent were added to water, and this was pulverized by the above-mentioned ball mill, and then the modified polysaccharide hydroxypropylcellulose (hereinafter referred to as HPC). 0.3 wt% was added and allowed to stir for 30 minutes to obtain a dispersion of an antibacterial and antifungal agent.

(Comparative Example 1)
In Comparative Example 1, 20% by weight of ZPT and 3% by weight of PEG as a wetting agent were added to water, and this was pulverized by the above-mentioned ball mill. 5% by weight was added and stirred for 30 minutes to obtain a dispersion of an antibacterial / antifungal agent.

(Comparative Example 2)
In Comparative Example 2, 20% by weight of ZPT and 5% by weight of PEG as a wetting agent were added to water, and this was pulverized by the above-mentioned ball mill, and then the cationic surfactant alkylammonium hydrite ( Nippon Emulsifier Co., Ltd .: Texnol L7) was added in an amount of 0.2% by weight, and this was stirred for 30 minutes to obtain a dispersion of an antibacterial / antifungal agent.

(Comparative Example 3)
In Comparative Example 3, 20% by weight of ZPT and 5% by weight of PEG as a wetting agent were added to water, and this was pulverized by the above ball mill, and then an anionic surfactant dodecylbenzenesulfonate. 0.2% by weight (manufactured by Nippon Emulsifier Co., Ltd .: Newcol 210) was added and stirred for 30 minutes to obtain a dispersion of an antibacterial / antifungal agent.

(Comparative Example 4)
In Comparative Example 4, 20% by weight of ZPT and 5% by weight of PEG as a wetting agent were added to water, and this was pulverized by the above ball mill, and then a polyoxyalkylene alkyl ether as a nonionic surfactant. 0.2% by weight (manufactured by Nippon Emulsifier Co., Ltd .: Newcol 2303-Y) was added and stirred for 30 minutes to obtain a dispersion of an antibacterial / antifungal agent.

  And the experiment which investigates aggregation and foaming with respect to a cation, an anion, and a nonion was conducted using the dispersion liquid of each antibacterial and antifungal agent of Examples 1 to 10 and Comparative Examples 1 to 4.

  Here, in the experiment on cations, 100 ml of a 0.1% by weight aqueous solution of benzalkonium chloride was added to a 200 ml stoppered graduated cylinder, and each of the antibacterial and antifungal agents described above was added using a 10 ml Pasteur pipette. After adding 10 drops of each of the above dispersions, the mixture was stirred for 20 revolutions per minute, and the aggregation of each of the antibacterial and antifungal property imparting agents was examined. The results are shown in Table 1 below.

  In the experiment for anions, 100 ml of a 0.1% by weight aqueous solution of dodecylbenzenesulfonate was added to a 200 ml stoppered graduated cylinder, and each antibacterial and antifungal agent was added using a 10 ml Pasteur pipette. After adding 10 drops of each of the above dispersions, the mixture was stirred for 20 revolutions per minute, and the aggregation of each of the antibacterial and antifungal property imparting agents was examined. The results are shown in Table 1 below.

  In the experiment for nonion, 100 ml of 0.1% by weight aqueous solution of polyoxyalkylene alkyl ether was added to a 200 ml stoppered graduated cylinder, and each antibacterial and antifungal agent was added using a 10 ml Pasteur pipette. After adding 10 drops of each of the above dispersions, the mixture was stirred for 20 revolutions per minute, and the aggregation of each of the antibacterial and antifungal property imparting agents was examined. The results are shown in Table 1 below.

  In the experiment on foamability, 100 ml of ion-exchanged water was added to a 200 ml measuring cylinder with a stopper, and 10 drops of each antibacterial and antifungal agent-dispersing agent were added using a 10 ml Pasteur pipette. Thereafter, the mixture was stirred for 20 revolutions per minute, and the foaming in the dispersion of each antibacterial and antifungal agent was examined. The results are shown in Table 1 below.

  Here, regarding the aggregation in each of the above experiments, the case where no aggregation occurred in the antibacterial / antifungal property imparting agent dispersion liquid, the case where the aggregation occurred in the antibacterial / antifungal property imparting agent dispersion × As evaluated. As for foaming, the case where the height of the foam immediately after stirring for 20 rotations is 5 cm or less and the height of the foam after 10 minutes is 3 cm or less satisfies the above condition. The case was evaluated as x.

  Further, using the antibacterial and antifungal property imparting agents of Examples 1 to 10 and Comparative Examples 1 to 4, polyester fibers (color dye company) : Antibacterial / antifungal antibacterial / antifungal fiber was obtained by subjecting 100% squeezed polyester fiber to heat treatment at 190 ° C. for 1 minute in air to conduct antibacterial / antifungal testing in accordance with JIS-L1902. The case where the gender was found to be effective was evaluated as ◯, and the case where the gender was not effective was evaluated as x.

  As a result, in the dispersion of the antibacterial / antifungal property-imparting agents of Examples 1 to 10 in which the modified polysaccharide having a reduced hydroxyl group was added to zinc pyrithione, which is a pyridine-based antibacterial / antifungal agent, No aggregation or foaming occurred for any of anion and nonion. For this reason, when the antibacterial / antifungal property-imparting agent dispersion of the examples is used, even if cations and anions are contained in various treatment agents such as dyes and softeners, pyridine-based antibacterial / antifungal agents Is maintained in a properly dispersed state and foaming does not occur, and the types of treatment agents such as dyes and softeners that can be used are no longer limited. It turns out that the process which provides property and the process by other processing agents can be performed appropriately now.

  In contrast, in the dispersion of the antibacterial / antifungal property-imparting agent of Comparative Example 1 in which dextrin, an unmodified polysaccharide, was added to zinc pyrithione, which is a pyridine-based antibacterial / antifungal agent, In the antibacterial / antifungal property-imparting agent dispersion of Comparative Example 2 to which a cationic surfactant was added, aggregation occurred with respect to anions and foaming occurred, and the anionic interface In the antibacterial / antifungal property-imparting agent dispersion of Comparative Example 2 to which an activator was added, aggregation occurred with respect to cations and foaming occurred, and the antibacterial of Comparative Example 3 to which a nonionic surfactant was added. In the dispersion of the antifungal agent, no aggregation occurred, but foaming occurred.

Claims (9)

  An antibacterial and antifungal agent, characterized by containing a pyridine-based antibacterial and antifungal agent and a modified polysaccharide having a reduced hydroxyl group.   2. The antibacterial / antifungal agent according to claim 1, wherein the pyridine antibacterial / antifungal agent is dispersed in a liquid.   3. The antibacterial / antifungal agent according to claim 1 or 2, wherein the pyridine antibacterial / antifungal agent is zinc pyrithione.   The antibacterial / antifungal agent according to any one of claims 1 to 3, wherein the modified polysaccharide having a reduced hydroxyl group is selected from a polysaccharide ester, a polysaccharide ether, and a polysaccharide amide. An antibacterial and antifungal property-imparting agent characterized by being one type.   The antibacterial / antifungal property-imparting agent according to any one of claims 1 to 4, further comprising a wetting agent.   A fiber processing agent for processing a fiber, wherein the antibacterial and antifungal property imparting agent according to any one of claims 1 to 5 is contained.   A method for producing antibacterial / antifungal fibers, comprising applying the antibacterial / antifungal property-imparting agent according to any one of claims 1 to 5 to fibers and then heat-treating the fibers. .   The method for producing antibacterial / antifungal fibers according to claim 7, wherein the fibers are immersed in the antibacterial / antifungal property-imparting agent, and then the fibers are subjected to 80 to 160 under normal pressure or pressure. A method for producing antibacterial and antifungal fibers, characterized by heat-treating in a bath at a temperature of ° C.   8. The method for producing antibacterial / antifungal fibers according to claim 7, wherein the antibacterial / antifungal imparting agent is impregnated or adhered to the fibers, and then the fibers are flown at a temperature of 110 to 230 ° C. A method for producing antibacterial and antifungal fibers, characterized by heat treatment in the inside.