JP3531842B2 - Antibacterial agent for textile processing - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antibacterial agent for treating fibers, which is used for imparting antibacterial properties to fibers such as yarns and fabrics. Particularly, the present invention relates to a novel antibacterial agent for treating fibers, which has an antibacterial effect against various bacteria and fungi.

[0002]

2. Description of the Related Art Microorganisms adhere to human skin.
The main microorganisms are bacteria, especially Corynebacterium and Staphylococcus. Bacteria that cause an unpleasant odor in underwear and socks are mainly Staphylococcus aureus, Escherichia coli, and urea-decomposing bacteria. Textile products that require antibacterial and deodorant treatment include underwear, socks, sports shirts, carpets, curtains, vehicle seat materials, and chair seat materials.

Heretofore, various antibacterial treatment agents and treatment methods have been proposed. However, conventional antibacterial treatment agents and antibacterial treatment methods do not provide sufficient antibacterial properties, and in order to obtain high antibacterial properties, it is necessary to attach or contain the antibacterial treatment agent to the fiber at a high concentration. there were.

[0004]

Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, to have a high antibacterial property and sufficient washing resistance, and to provide a liquid substance using water as a solvent. The present invention provides an antibacterial agent for fiber treatment, which enables easy treatment of the fiber and good working environment, and has sufficient effect even at a low concentration.

[0005]

[Means for Solving the Problems] What achieves the above-mentioned object is to provide a water-soluble N added to an aqueous solution of a cationic surfactant.
-Water solubility of long-chain acyl amino acid salts and metals with antibacterial properties
Antibacterial action formed in the cation aqueous solution with salt
Containing an N-long chain acylamino acid salt of a metal having
Both have N-long-chain acylamido of the metal having the antibacterial action.
Aggregation of the acid salt is suppressed by the cationic surfactant.
N-long chain acylamino acid salt of metal having antibacterial activity
Is an antibacterial agent for fiber treatment, which is contained in a dispersed state without being precipitated .

The antibacterial agent for fiber treatment preferably contains two or more kinds of N-long chain acylamino acid salts to which different metals having antibacterial action are bound. The metal is
It is preferably any one selected from the group consisting of silver, copper, lead, zinc or tin. The weight ratio of the N-long chain acylamino acid salt of the metal having the antibacterial action and the cationic surfactant in the antibacterial agent for fiber treatment is N-long chain acylamino acid salt: cationic surfactant = 1. : 1-1: 1
It is preferably 20. The fiber treatment antibacterial agent,
It preferably contains a nonionic surfactant. N of the metal having the antibacterial action in the antibacterial agent for fiber treatment
The weight ratio of the long-chain acyl amino acid salt, the cationic surfactant and the nonionic surfactant is N-long-chain acyl amino acid salt: cationic surfactant: nonionic surfactant = 1:
It is preferably 1: 1 to 1:20:20.

The fiber treatment antibacterial agent preferably contains an amphoteric surfactant. The weight ratio of the N-long chain acylamino acid salt of the metal having the antibacterial action, the cationic surfactant and the amphoteric surfactant in the antibacterial agent for fiber treatment is N-long chain acylamino acid salt: cationic interface. Activator: amphoteric surfactant = 1: 1: 1 to 1:20:20 is preferable. The fiber treatment antibacterial agent preferably contains a nonionic surfactant and an amphoteric surfactant. The weight ratio of the N-long chain acyl amino acid salt of the metal having the antibacterial action, the cationic surfactant, the nonionic surfactant and the amphoteric surfactant in the antibacterial agent for treating fibers is N-long chain acyl. Amino acid salt: Cationic surfactant: Nonionic surfactant: Amphoteric surfactant = 1: 1:
It is preferably 1: 1 to 1: 20: 20: 20.

[0008]

The antibacterial agent for treating fibers of the present invention contains an N-long chain acylamino acid salt of a metal having an antibacterial effect in a cationic surfactant aqueous solution. This fiber treatment antibacterial agent
Since it is an aqueous liquid, it can be diluted with water, and it is not necessary to use an organic solvent and fiber treatment is easy. Since the antibacterial agent for fiber treatment contains a cationic surfactant and an N-long chain acylamino acid salt of a metal having an antibacterial action, the antibacterial activity of the cationic surfactant and the N-length of a metal having an antibacterial action are possessed. It has both the antibacterial activity of the chain acyl amino acid salt (antibacterial metal salt). Furthermore, N, which is a metal having an antibacterial action,
-Long-chain acylamino acid salts are sparingly soluble in water, so they do not dissolve easily after adhering to fibers, and there is virtually no metal leakage, and it is safe, and the antibacterial activity of metals is It has washing resistance as well. Further, the cationic surfactant not only functions as a dispersant (aggregation inhibitor) for the antibacterial metal salt, but also assists the adhesion of the antibacterial metal salt to the fiber. Therefore, by containing both, the antibacterial agent for fiber treatment of the present invention can impart a high antibacterial action to the fiber. The N-long-chain acylamino acid antibacterial metal salt is extremely toxic since it is an amino acid that forms the basic skeleton.

The antibacterial agent for treating fibers of the present invention is, specifically, an antibacterial agent for treating fibers in which N-long-chain acylamino acid and a metal having an antibacterial action are bound to the N-long-chain acylamino acid. Since it contains a water-insoluble antibacterial metal salt and its mutual mutual aggregation is suppressed by the cationic surfactant, aggregation does not occur so much. The presence of micelles in a state close to the molecule seems to maintain the dispersed state without precipitation.

Therefore, the antibacterial agent for fiber treatment of the present invention will be described with reference to Examples. The N-long chain acylamino acid used for forming the N-long chain acylamino acid salt used in the present invention is an amino acid having a long chain acyl group (fatty acid residue) at the N position. As the long-chain acyl group, higher fatty acid residues are preferable, and for example, decanoyl group, lauroyl group, myristoyl group, palmitoyl group, stearoyl group, oleoyl group and the like are preferable. Further, the acyl group is not limited to a single one, and plural kinds of the above acyl groups may be used. The amino acid moiety may be any of monoaminomonocarboxylic acid, monoaminodicarboxylic acid and diaminomonocarboxylic acid. When the antibacterial substance of the present invention has a high antibacterial property, it is preferable to use monoaminodicarboxylic acid. Since this monoaminodicarboxylic acid has two carboxyl groups, it has an antibacterial action. It is possible for the metal to be easily bonded and to have a strong antibacterial effect as a whole.

As a general application of the antibacterial agent for treating fibers, a salt in which an amino acid has one metal having an antibacterial action bonded thereto has sufficient antibacterial activity. Specific examples of amino acids include glycine, alanine, valine, leucine, phenylalanine, tyrosine, threonine, tryptophan, and methionine as the monoaminomonocarboxylic acid, and aspartic acid and glutamic acid as the monoaminodicarboxylic acid. Examples of diaminomonocarboxylic acid are lysine, arginine and histidine. The N-long chain acylamino acid is not limited to one kind, and many kinds may be used.

As the metal having an antibacterial action used for forming the N-long chain acylamino acid salt used in the present invention, silver, copper, lead, zinc, tin, bismuth and the like can be preferably used. Among the above metals, silver or copper is more preferable from the viewpoint of antibacterial activity and safety. In particular, a metal having a valency of 2 or more is suitable for suppressing precipitation, and copper is also suitable in terms of antibacterial activity.

The antibacterial substance contained in the antibacterial agent of the present invention preferably contains two or more kinds of N-long chain acylamino acid salts to which different metals having an antibacterial action are bound.
That is, it is preferable that two or more kinds of N-long chain acylamino acid salts are contained, and different metals having antibacterial properties are bound to these N-long chain acylamino acid salts. As antimicrobial active substance, two or more of the antimicrobial metals will be contained in the form of a salt, from <br/> of Ru with antimicrobial metals alone, it becomes to have a broader antibacterial spectrum, It has a higher antibacterial effect and exerts an antibacterial effect against more kinds of fungi.

The two or more N-long chain acylamino acid salts are
Each is a salt of a metal having an antibacterial action and an N-long chain acylamino acid, and at least the metals are different from each other.
The long-chain acylamino acids can be the same or different. From the viewpoint of antibacterial activity and safety, among the above metals, silver or copper is an essential metal, and other metals (silver,
It is preferable to use at least one selected from copper, lead, zinc, tin, bismuth, etc.). Specific examples of preferable combinations include silver and copper, silver and zinc, silver and lead, copper and zinc, silver and copper and zinc, silver and copper and lead, silver and copper and bismuth, and copper and zinc and lead. . Particularly preferred are silver and copper.

Therefore, preferred specific examples of the N-long chain acylamino acid salt contained in the antibacterial agent for fiber treatment of the present invention include copper N-stearoylglutamate, copper N-lauroylglutamate, copper N-myristoylglutamate, Copper N-stearoyl aspartate, Copper N-lauroyl aspartate, Copper N-myristoyl aspartate, Silver N-stearoyl glutamate, Silver N-lauroyl glutamate, Silver N-myristoyl glutamate, N
-Silver stearoyl aspartate, N-silver lauroyl aspartate, N-myristoyl silver aspartate, N
-Stearoyl valine silver, N-lauroyl valine silver, N
-Myristoylvaline silver, N-stearoylvaline copper,
N-lauroyl valine copper, N-myristoyl valine copper,
N-stearoylphenylalanine silver, N-lauroylphenylalanine silver, N-myristoylphenylalanine silver, N-stearoylphenylalanine copper, N-lauroylphenylalanine copper, N-myristoylphenylalanine copper, N-stearoylarginine silver, N-lauroylarginine silver, N- Myristoyl arginine silver,
N-stearoylarginine copper, N-lauroylarginine copper, N-myristoylarginine copper, zinc N-stearoylglutamate, zinc N-lauroylglutamate, zinc N-myristoylglutamate, zinc N-stearoylaspartate, zinc N-lauroylaspartate, Zinc N-myristoyl aspartate, Bismuth N-stearoyl glutamate, Bismuth N-lauroyl glutamate, Bismuth N-myristoyl glutamate, Bismuth N-stearoyl aspartate, N-
Lauroyl bismuth aspartate, N-myristoyl bismuth aspartate, N-stearoyl valine zinc, N-lauroyl valine zinc, N-myristoyl valine zinc, N-stearoyl valine zinc, N-lauroyl valine zinc, N-myristoyl valine bismuth, N- Stearoylphenylalanine zinc, N-lauroylphenylalanine zinc, N-myristoylphenylalanine zinc, N-stearoylphenylalanine bismuth, N
-Lauroyl phenylalanine bismuth, N-myristoyl phenylalanine bismuth, N-stearoyl arginine zinc, N-lauroyl arginine zinc, N-myristoyl arginine zinc, N-stearoyl arginine bismuth, N-lauroyl arginine bismuth, N-myristoyl arginine bismuth, N-stearoyl Lead glutamate, lead N-lauroyl glutamate, lead N-myristoyl glutamate, lead N-stearoyl aspartate, lead N-lauroyl aspartate, lead N-myristoyl aspartate, tin N-stearoyl glutamate, tin N-lauroyl glutamate, N- Myristoyl tin glutamate, N-stearoyl tin aspartate, N-lauroyl tin aspartate, N-myristoyl aspartate N- stearoyl valine tin, N-
Lauroyl valine tin, N-myristoyl valine tin, N-
Examples include stearoylphenylalanine tin, N-lauroylphenylalanine tin, N-myristoylphenylalanine tin, N-stearoylarginine tin, N-lauroylarginine tin, and N-myristoylarginine tin.

The cationic surfactant used in the antibacterial agent for fiber treatment of the present invention is also called a cationic surfactant, and the long-chain alkyl group in the structure is ionized as a cation in an aqueous solution. (Surfactant). As the cationic surfactant, a quaternary ammonium compound having a long-chain alkyl group, a quaternary pyridinium compound having a long-chain alkyl group, and the like are generally used, and suitable for the present invention. Specifically, dialkyldimethylammonium salt (for example, distearyldimethylammonium chloride), monoalkyltrimethylammonium salt (for example, monostearyltrimethylammonium chloride), stearyldimethylbenzylammonium chloride, cetyltrimethylammonium chloride, myristyldimethylbenzylammonium chloride. , Benzalkonium chloride, lanolin ethylsulfate fatty acid aminopropylethyldimethylammonium and the like can be used.

Particularly, among the above-mentioned cationic surfactants,
Those having antibacterial properties are preferable, and benzalkonium chloride is particularly preferable. Benzalkonium chloride is a cationic surfactant and has high immediate antibacterial properties. By using benzalkonium chloride as a surfactant in the antibacterial agent for fiber treatment of the present invention, the liquid substance is
The N-long chain acylamino acid antibacterial metal salt contained in the present invention has immediate antibacterial properties, and since it is water-insoluble, has a slow-acting and long-lasting antibacterial property, it is possible to obtain higher antibacterial properties by cooperating with both. Has antibacterial properties.

Antibacterial N- in the antibacterial agent for treating fibers of the present invention
The concentration of the long-chain acyl amino acid salt varies greatly depending on the purpose of using the antibacterial agent for fiber treatment and whether it is a raw material or a final product, but the raw material is preferably about 0.01 to 10% by weight, and particularly preferably , 0.1 to 8% is preferable. The actual concentration of antibacterial N-long-chain acylamino acid salt used in fiber treatment is about 5 ppm to 1% by weight, and 10 to 500 ppm is particularly preferable.

The concentration of the cationic surfactant in the antibacterial agent for fiber treatment of the present invention varies greatly depending on the purpose of using the antibacterial agent for fiber treatment and whether it is a raw material or a final product (product at the time of use). However, the raw material is preferably about 1 to 60% by weight, and particularly preferably about 2 to 50%. The concentration of the cationic surfactant when actually used for fiber treatment is about 5 ppm to 1% by weight,
Particularly, 10 to 500 ppm is preferable.

Furthermore, the weight ratio of the antibacterial N-long-chain acylamino acid salt to the cationic surfactant in the antibacterial agent for fiber treatment is N-long-chain acylamino acid salt: cationic surfactant = 1: 1. ˜1: 20 is preferred, especially
A ratio of 1: 3 to 1:12 is preferable. Within the above range,
Precipitation of N-long chain acyl amino acid salt can be suppressed, and it has a sufficient antibacterial action.

The antibacterial agent for fiber treatment of the present invention can be manufactured as follows. First, an aqueous solution of a cationic surfactant is prepared. It is carried out by adding a powdery cationic surfactant to water, stirring and sufficiently dissolving it, and using an aqueous cationic surfactant solution provided in advance in liquid form. The concentration of the cationic surfactant in the prepared aqueous solution is 1 to 70% by weight.
It is preferably about 3 to 80%, and more preferably about 4 to 60%.

Next, a powder of N-long-chain acylamino acid or its water-soluble salt is prepared. Instead of powder, N-
An aqueous solution of an alkali metal salt such as sodium or potassium of long-chain acylamino acid or N-long-chain acylamino acid may be prepared. Powdered N-long-chain acylamino acid or N-long-chain acylamino acid salt is added to water, stirred and sufficiently dissolved, and N-long-chain acylamino acid or N- long-chain amino acid previously provided in liquid form. It is carried out by using an aqueous solution of a long-chain acylamino acid salt. The concentration of the N-long chain acylamino acid salt in the prepared aqueous solution is 1 to
About 80% by weight is preferable, and about 2 to 60% by weight is particularly preferable. Alternatively, a slurry may be used.

An aqueous solution of an antibacterial metal salt, for example, a water-soluble salt of silver nitrate, copper nitrate, silver sulfate, copper chloride, copper sulfate, zinc nitrate, zinc chloride, bismuth nitrate, etc. is prepared. When two or more antibacterial metal salts are present in the fiber treatment antibacterial agent, water-soluble salts of two or more antibacterial metals are prepared. This is done by adding powdered antibacterial metal salt to water, stirring and sufficiently dissolving it, and using an aqueous antibacterial metal salt solution provided in advance in liquid form. Be seen. When adding two or more kinds of water-soluble salts of metals having antibacterial action, a method of separately preparing an aqueous solution of two or more kinds of antibacterial metal salts and adding them, or two kinds in one liquid The method of preparing the mixed aqueous solution containing the above-mentioned antibacterial metal salt and adding this is used. The salt concentration of the antibacterial metal in the prepared aqueous solution is 1 to 40% by weight.
The amount is preferably about 2 to 30% by weight. Further, instead of preparing a metal salt aqueous solution having antibacterial properties, a powdery or slurry metal salt having antibacterial properties may be used.

Then, in an aqueous solution of a cationic surfactant,
The N-long chain acyl amino acid salt powder and the antibacterial metal salt aqueous solution prepared as described above are added. The addition may be carried out simultaneously, or the N-long chain acylamino acid salt may be added first, followed by stirring, and then the antibacterial metal salt aqueous solution may be added, or vice versa. It is also preferable to add the above liquid while stirring an aqueous solution of a cationic surfactant with a rotor or the like. Furthermore, even if either or both of the N-long chain acylamino acid salt and the antibacterial metal salt are in the form of powder, it can be carried out by adding them to the cationic surfactant aqueous solution and stirring the same. However, as described above, the order of addition may be simultaneous or sequential. In this way, the N-long chain acylamino acid salt and the antibacterial metal salt are added to the aqueous solution of the cationic surfactant.
Upon addition, an N-long-chain acylamino acid antibacterial metal salt in which an N-long-chain acylamino acid and an antibacterial metal are bound is formed, and the formed N-long-chain acylamino acid antibacterial metal salt is in a dispersed state. The antibacterial agent for fiber treatment is formed in the emulsion state or in the liquid state.

The N-long chain acylamino acid antibacterial metal salt is
It is a substance insoluble in water and precipitates in ordinary aqueous solutions.
This precipitation is caused by the molecules of the N-long-chain acylamino acid antibacterial metal salt associating (aggregating) by intermolecular force to form colloidal particles, which become particles and have low affinity with water. I think that the.

The N-long chain acylamino acid antibacterial metal salt is
Since it is a salt in which at least one metal having antibacterial properties is bound in each molecule, it has extremely high antibacterial activity, and
Since amino acids form the basic skeleton, they have very little toxicity and can be safely used for various purposes. Also,
By increasing the concentration of the antibacterial metal salt and the surfactant in the antibacterial agent for fiber treatment, a paste-like antibacterial agent for fiber treatment can be obtained. As this method, a method in which a surfactant and an antibacterial metal salt are produced in advance so as to have a high concentration, or after making a solution having a normal concentration, for example, reducing water by heating, leaving, etc. Can be done by.

The fibers in which the antibacterial agent for fiber treatment of the present invention is used include yarns, woven fabrics, non-woven fabrics, knitted fabrics, and fiber products made by using them. The fiber material is not particularly limited, and may be natural fiber, synthetic fiber, regenerated fiber, or the like. Especially cotton, silk,
It is effective for natural fibers such as hemp and wool, and recycled fibers such as rayon and cupra. It is considered that this is because the cationic surfactant contained in the antibacterial agent for fiber treatment of the present invention has a slight negative charge and thus has a higher adhesiveness because it has a positive charge. The textile product to be treated may be of any type, for example, underwear, socks, sports shirts, carpets, curtains, vehicle seat materials, chair seat materials, sheets, towels, yukatas, filters, etc. Conceivable.

In the antibacterial agent for treating fibers of the present invention,
It may contain a nonionic surfactant. Although the reason is not clear by containing a nonionic surfactant, the adhesion of the above-mentioned antibacterial metal salt and cationic surfactant, which are the main components of the antibacterial agent for fiber treatment, to the fiber is improved. Presumably, it is thought that the nonionic surfactant promotes the swelling of the fiber surface and enhances the permeability of the main component of the antibacterial agent for fiber treatment into the fiber.

As the nonionic surfactant, alkyl glucoside is preferable. Alkyl glucoside is a dehydration compound of sugar and alcohol, and is a kind of glycoside widely existing in the living world. Alkyl glucoside has extremely low toxicity, good biodegradability, and high safety. Therefore, the antibacterial agent for fiber treatment of the present invention can be used for various purposes, and further, since it is a nonionic surfactant, it hardly reacts with other substances. Examples of the alkyl glucoside include the following general formula (1) G-OR (1) [wherein, G is a residue of a monosaccharide selected from glucose, mannose, galactose and glucosamine, or one or two of the above monosaccharides. The above shows 2 to 4 preferred residues of linked oligos and the like. R is an alkyl group. ]

The alkyl group represented by R in the above formula is preferably a linear or branched alkyl group having about 6 to 12 carbon atoms, for example, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, 2 -Ethylhexyl, 1-methylheptyl, 2-methylheptyl, 2-butylhexyl, isodecyl, 2-ethyloctyl, 4-
Ethyl octyl and the like are preferable. Further, the alkyl group may have one kind or two or more kinds of substituents,
For example, hydroxyl group, amino group, nitro group, chlorine, fluorine,
A halogen group such as iodine or bromine is considered.

Alkyl glucosides include hexyl glucoside, hexyl galactocoside, hexyl mannoside, isohexyl glucoside, isohexyl galactocoside, octyl glucoside, octyl galactocoside, octyl mannoside, octyl glucosamide. ,
2-Ethylhexyl glucoside, 2-ethylhexyl galactocoside, 2-ethylhexyl mannoside, isooctyl glucoside, decyl glucoside, decyl galactocoside, decyl mannoside and the like are preferable. The ionomer composition of the alkyl glucoside is not particularly limited, and may be an α-form or a β-form. The alkyl group has 6 to 6 carbon atoms.
12 straight-chain ones are preferred.

Particularly, as the alkyl glucoside, HL
B is preferably 12 or more, and as such an alkyl glucoside, octyl glucoside (n = 8),
Ethylhexyl glucoside (n = 8), decyl glucoside (n = 10), nonyl glucoside (n = 9), heptyl glucoside (n = 7), hexyl glucoside (n =)
6), undecyl glucoside (n = 11), dodecyl glucoside (n = 12) and the like. Among these,
Octyl glucoside (n = 8), ethylhexyl glucoside (n = 8), decyl glucoside (n = 10) and nonyl glucoside (n = 9) are preferable.

As the nonionic surfactant other than alkyl glucoside, alkyl polyoxyethylene ether, alkyl phenyl polyoxyethylene ether,
Examples thereof include N, N-di (alkanol) alkanamide and amine oxide.

The concentration (pure concentration) of the alkyl glucoside in the antibacterial agent for fiber treatment varies greatly depending on the purpose of using the antibacterial agent for fiber treatment and whether it is a raw material or a final product (product at the time of use). As a raw material, 1 to 60% by weight
The degree is preferable, and particularly about 2 to 50% is preferable.
When actually used for fiber treatment, the alkyl glucoside concentration of about 5 ppm to 1 wt% is sufficient, and 10 to 500 ppm is particularly preferable. Furthermore, the weight ratio of the antibacterial N-long-chain acylamino acid salt to the cationic surfactant and the alkylglucoside in the antibacterial agent for fiber treatment is N-long-chain acylamino acid salt: cationic surfactant = 1: 1. It is preferable that it is: 1 to 1:20:20. Within the above range, precipitation of the N-long chain acylamino acid salt can be suppressed, and the antibacterial action is sufficient. Especially, 1: 1 to 1:10:10 is preferable. This alkyl glucoside also has an antibacterial action due to the surfactant action.

Further, the antibacterial agent for fiber treatment of the present invention preferably contains an amphoteric surfactant. By containing this amphoteric surfactant, the precipitation of the N-long chain acylamino acid salt can be suppressed more reliably. The content concentration (pure concentration) of the amphoteric surfactant varies greatly depending on the purpose of using the antibacterial agent for fiber treatment, and whether it is the raw material or the final product (the product at the time of use).
About 1 to 60% by weight is preferable, and about 2 to 50% is particularly preferable. When actually used for fiber treatment, the alkyl glucoside concentration of about 5 ppm to 1 wt% is sufficient, and 10 to 500 ppm is particularly preferable.

Any amphoteric surfactant can be used, and for example, alkylbetaine, alkylpropylbetaine, sulfobetaine, glycine-type amphoteric surfactant and the like can be used. As the alkyl betaine, those having a linear or branched chain having 6 to 18 carbon atoms in the alkyl group are preferable, and specifically, dimethyl coco alkyl betaine and dimethyl dodecyl betaine which are dimethyl alkyl betaines are preferable. Can be used. The amphoteric surfactant has not only the dispersing action of the antibacterial metal salt but also the antibacterial action due to the surfactant action.

Further, the antibacterial agent for fiber treatment of the present invention preferably contains both a nonionic surfactant and an amphoteric surfactant. The content range of each is preferably within the above range. In addition, the antibacterial N in the antibacterial agent for fiber treatment
The weight ratio of long-chain acyl amino acid salt, cationic surfactant, nonionic surfactant, and amphoteric surfactant is N-long-chain acyl amino acid salt: cationic surfactant: nonionic surfactant: amphoteric surfactant. Activator = 1: 1: 1: 1 to 1: 20: 2
It is preferably 0:20. Within the above range,
Precipitation of N-long chain acyl amino acid salt can be suppressed, and it has a sufficient antibacterial action. In particular, 1: 1
1: 1 to 1: 10: 10: 10 is preferable.

In order to increase the adhesiveness of the antibacterial agent for treating fibers, an adhesive substance may be added, and examples of the adhesive substance include carboxymethyl cellulose, methyl cellulose, oxypropyl cellulose, oxyethyl cellulose and the like. Cellulosic material, PVA (polyvinyl alcohol), modified PVA (eg, carboxyl modified PVA, sulfonic acid group modified PVA, acrylamide modified PVA, carion group modified PVA, long chain alkyl group modified PVA), starch, modified starch, casein, synthetic Resin emulsion (eg, styrene-butadiene latex,
Polyacrylic ester emulsion, vinyl acetate-acrylic ester copolymer emulsion, vinyl acetate-ethylene copolymer emulsion) and the like are used.

The fiber treatment with the antibacterial agent for fiber treatment of the present invention can be performed on the fiber material to be treated by a method such as a dipping method, a pad method, a printing method, a spray method or the like. The dipping method is particularly preferable, and it is preferable that the dipping method is followed by pulling up and heat treatment.

[0040]

EXAMPLES Next, examples of the antibacterial agent for fiber treatment of the present invention will be described.

(Example 1) As a cationic surfactant,
Aqueous benzalkonium chloride solution (Product name Cation G-5
0, Sanyo Chemical Co., Ltd., surfactant concentration about 50% by weight)
About 200 g was used. As the alkali metal salt of N-long-chain acylamino acid, disodium N-stearoyl-L-glutamate (manufactured by Ajinomoto Co., Inc., trade name: Amisoft HS-21) was used. An aqueous solution of copper nitrate was prepared by dissolving 26 g of copper nitrate in 180 g of water. Then, an aqueous solution obtained by diluting 200 g of the above cationic surfactant aqueous solution with 200 g of water is mixed with 46 g of disodium N-stearoyl-L-glutamate and 206 g of the above copper nitrate aqueous solution, thereby producing a blue-green emulsion state fiber. A stock solution of antibacterial agent for treatment is prepared, and 4348 g of water is added to the solution to dilute it, and the antibacterial agent for fiber treatment of the present invention (copper concentration of N-stearoyl-L-glutamate is about 1%, benzalkonium chloride concentration is about 2). %, About 1 kg of Example 1) was prepared. The liquid material did not cause separation or precipitation even after being left for 6 months.

Example 2 30 g of the antibacterial agent for fiber treatment prepared in Example 1 was diluted with 9970 g of water.
The dilutability with water was good, and it was confirmed by visual observation that they were uniformly dispersed. Thus, an aqueous solution of an antibacterial agent for fiber treatment having a practical concentration (concentration of copper N-stearoyl-L-glutamate of about 30 ppm, concentration of benzalkonium chloride of about 60 ppm, Example 2) was prepared.

Example 3 As a cationic surfactant,
Aqueous benzalkonium chloride solution (Product name Cation G-5
0, Sanyo Chemical Co., Ltd., surfactant concentration about 50% by weight)
About 200 g was used. As the alkali metal salt of N-long-chain acylamino acid, disodium N-stearoyl-L-glutamate (manufactured by Ajinomoto Co., Inc., trade name: Amisoft HS-21) was used. A copper nitrate aqueous solution was prepared by dissolving 28 g of silver nitrate in 192 g of water. Then, an aqueous solution prepared by diluting 200 g of the above cationic surfactant aqueous solution with 200 g of water is mixed with 46 g of disodium N-stearoyl-L-glutamate and 220 g of the above silver nitrate aqueous solution, whereby an antibacterial agent for fiber treatment in an emulsion state. An undiluted solution is prepared, and 4334 g of water is added to the undiluted solution to dilute it, and the antibacterial agent for fiber treatment of the present invention (N-stearoyl-L
-About 5 kg of silver glutamate concentration about 1%, benzalkonium chloride concentration about 2%, Example 3) was prepared. The liquid material did not cause separation or precipitation even after being left for 6 months.

Example 4 30 g of the antibacterial agent for fiber treatment prepared in Example 3 was diluted with 9970 g of water.
The dilutability with water was good, and it was confirmed by visual observation that they were uniformly dispersed. In this way, a practical concentration aqueous solution of the antibacterial agent for fiber treatment (N-stearoyl-L-glutamate silver concentration: about 30 ppm, benzalkonium chloride concentration: about 60 ppm, Example 4) was prepared.

(Example 5) As a cationic surfactant,
Aqueous benzalkonium chloride solution (Product name Cation G-5
0, Sanyo Chemical Co., Ltd., surfactant concentration about 50% by weight)
About 200 g was used. As the alkali metal salt of N-long-chain acylamino acid, disodium N-stearoyl-L-glutamate (manufactured by Ajinomoto Co., Inc., trade name: Amisoft HS-21) was used. Silver nitrate 10g, copper nitrate 16.5
g was dissolved in 133.5 g of water to prepare a silver-copper mixed aqueous solution. And 200 g of the above cationic surfactant aqueous solution
Was diluted with 200 g of water, and N-stearoyl-
By mixing 56 g of L-glutamate disodium and 160 g of the above mixed aqueous solution, an antibacterial stock solution for fiber treatment of the present invention in a blue-green emulsion state is prepared, and 4384 g of water is added to the stock solution to dilute it. Inventive antibacterial agent for fiber treatment (N-stearoyl-L-silver glutamate weight concentration about 0.6%, N-stearoyl-L-glutamate copper weight concentration about 0.4%, benzalkonium chloride concentration about 2%, implementation About 5 kg of Example 5) was prepared. This liquid is
Even after being left for 6 months, no separation or precipitation occurred.

Example 6 30 g of the antibacterial agent for fiber treatment prepared in Example 5 was diluted with 9970 g of water.
The dilutability with water was good, and it was confirmed by visual observation that they were uniformly dispersed. In this manner, an aqueous solution of an antibacterial agent for fiber treatment having a practical concentration (N-stearoyl-L-glutamate silver concentration: about 18 ppm, N-stearoyl-L-glutamate copper concentration: about 12 ppm, benzalkonium chloride concentration: about 60 ppm, Example 6). It was created.

Example 7 As a cationic surfactant,
About 160 g of an aqueous solution of lanolin fatty acid aminopropylethyldimethylammonium ethyl sulfate (product name: Cation LQ, Sanyo Kasei Co., Ltd., surfactant concentration: about 65% by weight) was used. As an alkali metal salt of N-long-chain acylamino acid, disodium N-stearoyl-L-glutamate (manufactured by Ajinomoto Co., Inc., trade name Amisoft HS-21)
Was used. Silver nitrate 10g, copper nitrate 16.5g in water 13
A silver-copper mixed aqueous solution dissolved in 3.5 g was prepared. Then, 160 g of the above cationic surfactant aqueous solution is added to water 20
In an aqueous solution diluted with 0 g, 56 g of disodium N-stearoyl-L-glutamate, the above mixed aqueous solution 160
By mixing g, an antibacterial stock solution for fiber treatment of the present invention in a blue-green emulsion state is prepared, and water 4
424 g was added and diluted to give an antibacterial agent for fiber treatment of the present invention (N-stearoyl-L-glutamate silver weight concentration about 0.6%, N-stearoyl-L-copper glutamate weight concentration about 0.4%, About 5 kg of a cationic surfactant concentration of about 2% and Example 7) was prepared. The liquid material did not cause separation or precipitation even after being left for 6 months.

(Example 8) 30 g of the antibacterial agent for fiber treatment prepared in Example 7 was diluted with 9970 g of water.
The dilutability with water was good, and it was confirmed by visual observation that they were uniformly dispersed. Thus, a practical concentration of an aqueous solution of an antibacterial agent for fiber treatment (concentration of silver N-stearoyl-L-glutamate of about 18 ppm, copper concentration of N-stearoyl-L-glutamate of about 12 ppm, concentration of cationic surfactant of about 60 ppm, Example 8). )made.

(Example 9) As a cationic surfactant,
About 250 g of a quaternary ammonium salt water-soluble polymer (product name: Kayacryl resin, Nippon Kayaku Co., Ltd., surfactant concentration: about 40% by weight) was used. As the alkali metal salt of N-long-chain acylamino acid, disodium N-stearoyl-L-glutamate (manufactured by Ajinomoto Co., Inc., trade name: Amisoft HS-21) was used. 10g silver nitrate, 1 copper nitrate
A silver-copper mixed aqueous solution was prepared by dissolving 6.5 g in 133.5 g of water. Then, the above cationic surfactant aqueous solution 2
An aqueous solution prepared by diluting 50 g with 200 g of water was mixed with 56 g of N-stearoyl-L-glutamate disodium and 160 g of the above mixed aqueous solution to prepare an antibacterial stock solution for fiber treatment of the present invention in a blue-green emulsion state. Then, 4334 g of water was added to the mixture to dilute it, and the antibacterial agent for fiber treatment of the present invention (silver concentration of N-stearoyl-L-glutamate about 0.6%, copper concentration of N-stearoyl-L-glutamate of about 0% was obtained. 0.4%, cationic surfactant concentration about 2%, and about 9 kg of Example 9) was prepared. The liquid material did not cause separation or precipitation even after being left for 6 months.

Example 10 30 g of the fiber treating antibacterial agent prepared in Example 9 was diluted with 9970 g of water. The dilutability with water was good, and it was confirmed by visual observation that they were uniformly dispersed. Thus, a practical concentration of an aqueous solution of an antibacterial agent for fiber treatment (concentration of silver N-stearoyl-L-glutamate of about 18 ppm, N-stearoyl-L-
A copper glutamate concentration of about 12 ppm and a cationic surfactant concentration of about 60 ppm, Example 10) were prepared.

(Example 11) As a cationic surfactant, an aqueous solution of benzalkonium chloride (product name: cation G-
50, Sanyo Kasei Co., Ltd., surfactant concentration about 50% by weight) about 200 g. As the alkali metal salt of N-long-chain acylamino acid, disodium N-stearoyl-L-glutamate (manufactured by Ajinomoto Co., Inc., trade name: Amisoft HS-21) was used. Silver nitrate 10g, copper nitrate 18
A silver-copper mixed aqueous solution was prepared by dissolving g in 125 g of water.
A silver-copper mixed aqueous solution was prepared by dissolving 10 g of silver nitrate and 16.5 g of copper nitrate in 133.5 g of water. As an alkyl glucoside, octyl glucoside liquid [Product name: Sucra
ph AG8, n-octyl D-glucoside, HLB1
9, molecular weight 292.37, liquid state (containing 50% by weight octyl glucoside), Nippon Seika Co., Ltd., and 450 g of this alkyl glucoside liquid substance was deionized water 39
Dissolved in 34 g, and aqueous solution of alkyl glucoside 4384 g
It was created.

200 g of the above cationic surfactant aqueous solution
Was diluted with 200 g of water, and N-stearoyl-
By mixing 56 g of L-glutamate disodium and 160 g of the above mixed aqueous solution, a stock solution in a blue-green emulsion state was prepared, and this was added to 4384 g of an aqueous solution of alkyl glucoside to obtain the antibacterial agent for fiber treatment ( Silver N-stearoyl-L-glutamate weight concentration about 0.6%, N-stearoyl-L-glutamate copper weight concentration about 0.4%, cationic surfactant concentration about 2%, alkyl glucoside concentration about 4.5%. , Example 11) about 5k
g created. The liquid material did not cause separation or precipitation even after being left for 6 months.

(Example 12) 30 g of the antibacterial agent for fiber treatment prepared in Example 11 was diluted with 9970 g of water. The dilutability with water was good, and it was confirmed by visual observation that they were uniformly dispersed. Thus, a practical concentration of an aqueous solution of an antibacterial agent for fiber treatment (concentration of silver N-stearoyl-L-glutamate of about 18 ppm, N-stearoyl-L-
Copper glutamate concentration about 12ppm, cationic surfactant concentration about 60ppm, alkyl glucoside concentration about 135p
pm, Example 12).

(Example 13) Instead of the alkyl glucoside of Example 13, decyl glucoside (n-decyl D-
Glucoside, molecular weight 320.43, HLB16, powdered), except that 225 g of this alkyl glucoside powder was dissolved in 4159 g of ion-exchanged water to prepare 4384 g of an aqueous solution of alkyl glucoside, and the same procedure as in Example 12 was performed. The antibacterial agent for fiber treatment of the present invention (N-stearoyl-L-silver glutamate weight concentration about 0.6%,
N-stearoyl-L-glutamate copper weight concentration of about 0.
4%, a cationic surfactant concentration of about 2%, a nonionic surfactant concentration of about 4.5%, and about 5 kg of Example 13) was prepared. The liquid material did not cause separation or precipitation even after being left for 6 months.

Example 14 30 g of the fiber treatment antibacterial agent prepared in Example 13 was diluted with 9970 g of water. The dilutability with water was good, and it was confirmed by visual observation that they were uniformly dispersed. Thus, a practical concentration of an aqueous solution of an antibacterial agent for fiber treatment (concentration of silver N-stearoyl-L-glutamate of about 18 ppm, N-stearoyl-L-
Copper glutamate concentration about 12ppm, cationic surfactant concentration about 60ppm, nonionic surfactant concentration about 135p
pm, Example 14).

Example 15 As a cationic surfactant, an aqueous solution of benzalkonium chloride (product name Cation G-
50, Sanyo Kasei Co., Ltd., surfactant concentration about 50% by weight) about 200 g. As the alkali metal salt of N-long-chain acylamino acid, disodium N-stearoyl-L-glutamate (manufactured by Ajinomoto Co., Inc., trade name: Amisoft HS-21) was used. Silver nitrate 10g, copper nitrate 18
A silver-copper mixed aqueous solution was prepared by dissolving g in 125 g of water.
A silver-copper mixed aqueous solution was prepared by dissolving 10 g of silver nitrate and 16.5 g of copper nitrate in 133.5 g of water. As an amphoteric surfactant, dimethyl dodecyl betaine liquid [brand name Anon B
L, liquid (containing about 36% by weight of dimethyldodecyl betaine), NOF CORPORATION] was used.

200 g of the above cationic surfactant aqueous solution
Was diluted with 200 g of water, and N-stearoyl-
By mixing 56 g of disodium L-glutamate, 160 g of the above mixed aqueous solution, and 625 g of an amphoteric surfactant, a stock solution in a blue-green emulsion state was prepared, and this was added to 3759 g of water to carry out the fiber treatment of the present invention. Antibacterial agent (N-stearoyl-L-glutamate silver weight concentration about 0.6%, N-stearoyl-L-glutamate copper weight concentration about 0.4%, cationic surfactant concentration about 2%, amphoteric surfactant Concentration about 4.5%, Example 11) about 5 kg
Created. This liquid is separated even if left for 6 months,
No precipitation occurred.

Example 16 30 g of the fiber treating antibacterial agent prepared in Example 15 was diluted with 9970 g of water. The dilutability with water was good, and it was confirmed by visual observation that they were uniformly dispersed. Thus, a practical concentration of an aqueous solution of an antibacterial agent for fiber treatment (concentration of silver N-stearoyl-L-glutamate of about 18 ppm, N-stearoyl-L-
Copper glutamate concentration about 12ppm, cationic surfactant concentration about 60ppm, amphoteric surfactant concentration about 135pp
m, Example 16).

Example 17 As a cationic surfactant, an aqueous solution of benzalkonium chloride (product name: cation G-
50, Sanyo Kasei Co., Ltd., surfactant concentration about 50% by weight) about 200 g. As the alkali metal salt of N-long-chain acylamino acid, disodium N-stearoyl-L-glutamate (manufactured by Ajinomoto Co., Inc., trade name: Amisoft HS-21) was used. 10g silver nitrate, 1 copper nitrate
A silver-copper mixed aqueous solution was prepared by dissolving 6.5 g in 133.5 g of water. As the amphoteric surfactant, a liquid product of dimethyldodecylbetaine [trade name: Anone BL, liquid form (containing about 36% by weight of dimethyldodecylbetaine), NOF Corporation] was used. As an alkyl glucoside, an octyl glucoside liquid product [trade name: Sucraph AG8, n-
Octyl D-glucoside, HLB19, molecular weight 292.
37, liquid (containing 50 wt% octyl glucoside),
Nippon Seika Co., Ltd.] was used. Alkyl glucoside 25
0 g was added to 3849 g of water to prepare 4099 g of an alkyl glucoside aqueous solution.

200 g of the above cationic surfactant aqueous solution
Was diluted with 200 g of water, and N-stearoyl-
By mixing 56 g of L-glutamate disodium, 160 g of the above mixed aqueous solution, and 285 g of an amphoteric surfactant, a stock solution in a blue-green emulsion state was prepared, and this was added to 4099 g of the above alkyl glucoside aqueous solution to prepare The antibacterial agent for fiber treatment of the invention (N-stearoyl-L-silver glutamate weight concentration about 0.6%, N-stearoyl-L-copper glutamate weight concentration about 0.4%, cationic surfactant concentration about 2%, Amphoteric surfactant concentration about 2
%, Nonionic surfactant concentration about 2.5%, Example 17)
About 5 kg was prepared. The liquid material did not cause separation or precipitation even after being left for 6 months.

Example 18 30 g of the antibacterial agent for fiber treatment prepared in Example 17 was diluted with 9970 g of water. The dilutability with water was good, and it was confirmed by visual observation that they were uniformly dispersed. Thus, a practical concentration of an aqueous solution of an antibacterial agent for fiber treatment (concentration of silver N-stearoyl-L-glutamate of about 18 ppm, N-stearoyl-L-
Copper glutamate concentration about 12ppm, cationic surfactant concentration about 60ppm, amphoteric surfactant concentration about 60ppm,
A nonionic surfactant concentration of about 75 ppm, Example 18) was prepared.

Example 19 As a cationic surfactant, an aqueous solution of lanolin fatty acid aminopropylethyldimethylammonium ethyl sulfate (product name: Cation LQ, Sanyo Kasei Co., Ltd., surfactant concentration: about 65% by weight) is about 160.
g was used. As an alkali metal salt of N-long chain acylamino acid, N-stearoyl-L-glutamate disodium (manufactured by Ajinomoto Co., Inc., trade name: Amisoft HS-2)
1) was used. 10 g of silver nitrate and 16.5 g of copper nitrate are added to 1 part of water.
A silver-copper mixed aqueous solution dissolved in 33.5 g was prepared. As the amphoteric surfactant, a liquid product of dimethyldodecylbetaine [trade name: Anone BL, liquid form (containing about 36% by weight of dimethyldodecylbetaine), NOF Corporation] was used.
As the alkyl glucoside, an octyl glucoside liquid product [trade name: Sucraph AG8, n-octyl D-glucoside, HLB19, molecular weight 292.37, liquid form (containing 50 wt% octyl glucoside), Nippon Seika Co., Ltd.] was used. Alkyl glucoside 250g in water 39
Add to 34g, and aqueous solution of alkyl glucoside 4439
g was created.

160 g of the above cationic surfactant aqueous solution
Was diluted with 200 g of water, and N-stearoyl-
By mixing 56 g of L-glutamate disodium, 160 g of the above mixed aqueous solution, and 285 g of an amphoteric surfactant, a stock solution in a blue-green emulsion state was prepared, and this was added to 4139 g of the above aqueous solution of alkyl glucoside to prepare a main solution. The antibacterial agent for fiber treatment of the invention (N-stearoyl-L-silver glutamate weight concentration about 0.6%, N-stearoyl-L-copper glutamate weight concentration about 0.4%, cationic surfactant concentration about 2%, Amphoteric surfactant concentration about 2
%, Nonionic surfactant concentration about 2.5%, Example 17)
About 5 kg was prepared. The liquid material did not cause separation or precipitation even after being left for 6 months.

Example 20 30 g of the antibacterial agent for fiber treatment prepared in Example 19 was diluted with 9970 g of water. The dilutability with water was good, and it was confirmed by visual observation that they were uniformly dispersed. Thus, a practical concentration of an aqueous solution of an antibacterial agent for fiber treatment (concentration of silver N-stearoyl-L-glutamate of about 18 ppm, N-stearoyl-L-
Copper glutamate concentration about 12ppm, cationic surfactant concentration about 60ppm, amphoteric surfactant concentration about 60ppm,
A nonionic surfactant concentration of about 75 ppm, Example 18) was prepared.

(Example 21) About 160 g of stearyltrimethylammonium chloride (product name Levon TM-18, Sanyo Kasei Co., Ltd., surfactant concentration about 64% by weight) was used as a cationic surfactant. As an alkali metal salt of N-long-chain acylamino acid, N-stearoyl-L-
Disodium glutamate (manufactured by Ajinomoto Co., Inc., trade name Amisoft HS-21) was used. A silver-copper mixed aqueous solution was prepared by dissolving 10 g of silver nitrate and 16.5 g of copper nitrate in 133.5 g of water. As an amphoteric surfactant, dimethyl dodecyl betaine liquid [brand name Anon BL, liquid (about 3
6 wt% dimethyldodecyl betaine), NOF CORPORATION] was used. As an alkyl glucoside, an octyl glucoside liquid product [trade name: Sucraph AG8,
n-octyl D-glucoside, HLB19, molecular weight 29
2.37, liquid (containing 50 wt% octyl glucoside), Nippon Seika Co., Ltd.] was used. 250 g of alkyl glucoside was added to 3934 g of water to prepare 4439 g of an aqueous solution of alkyl glucoside.

160 g of the above cationic surfactant aqueous solution
Was diluted with 200 g of water, and N-stearoyl-
By mixing 56 g of L-glutamate disodium, 160 g of the above mixed aqueous solution, and 285 g of an amphoteric surfactant, a stock solution in a blue-green emulsion state was prepared, and this was added to 4139 g of the above aqueous solution of alkyl glucoside to prepare a main solution. The antibacterial agent for fiber treatment of the invention (N-stearoyl-L-silver glutamate weight concentration about 0.6%, N-stearoyl-L-copper glutamate weight concentration about 0.4%, cationic surfactant concentration about 2%, Amphoteric surfactant concentration about 2
%, Nonionic surfactant concentration about 2.5%, Example 17)
About 5 kg was prepared. The liquid material did not cause separation or precipitation even after being left for 6 months.

Example 22 30 g of the antibacterial agent for fiber treatment prepared in Example 21 was diluted with 9970 g of water. The dilutability with water was good, and it was confirmed by visual observation that they were uniformly dispersed. Thus, a practical concentration of an aqueous solution of an antibacterial agent for fiber treatment (concentration of silver N-stearoyl-L-glutamate of about 18 ppm, N-stearoyl-L-
Copper glutamate concentration about 12ppm, cationic surfactant concentration about 60ppm, amphoteric surfactant concentration about 60ppm,
A nonionic surfactant concentration of about 75 ppm, Example 18) was prepared.

Example 23 As a cationic surfactant, an aqueous benzalkonium chloride solution (product name Cation G-
50, Sanyo Kasei Co., Ltd., surfactant concentration about 50% by weight) about 200 g. As the alkali metal salt of N-long-chain acylamino acid, disodium N-stearoyl-L-glutamate (manufactured by Ajinomoto Co., Inc., trade name: Amisoft HS-21) was used. 10g silver nitrate, 1 copper nitrate
A silver-copper mixed aqueous solution was prepared by dissolving 6.5 g in 133.5 g of water. As the amphoteric surfactant, a liquid product of dimethyldodecylbetaine [trade name: Anone BL, liquid form (containing about 36% by weight of dimethyldodecylbetaine), NOF Corporation] was used. As an alkyl glucoside, an octyl glucoside liquid product [trade name: Sucraph AG8, n-
Octyl D-glucoside, HLB19, molecular weight 292.
37, liquid (containing 50 wt% octyl glucoside),
Nippon Seika Co., Ltd.] was used. Carboxymethyl cellulose was used as an adhesive substance. 250g of alkyl glucoside and 5g of carboxymethyl cellulose in 38g of water
Addition to 44g, Alkyl glucoside aqueous solution 4099
g was created.

200 g of the above cationic surfactant aqueous solution
Was diluted with 200 g of water, and N-stearoyl-
By mixing 56 g of L-glutamate disodium, 160 g of the above mixed aqueous solution, and 285 g of an amphoteric surfactant, a stock solution in a blue-green emulsion state was prepared, and this was added to 4099 g of the above alkyl glucoside aqueous solution to prepare The antibacterial agent for fiber treatment of the invention (N-stearoyl-L-silver glutamate weight concentration about 0.6%, N-stearoyl-L-copper glutamate weight concentration about 0.4%, cationic surfactant concentration about 2%, Amphoteric surfactant concentration about 2
%, Nonionic surfactant concentration about 2.5%, carboxymethylcellulose concentration 0.1%, Example 23) about 5 kg
Created. This liquid is separated even if left for 6 months,
No precipitation occurred.

(Example 24) 30 g of the antibacterial agent for fiber treatment prepared in Example 23 was diluted with 9970 g of water. The dilutability with water was good, and it was confirmed by visual observation that they were uniformly dispersed. Thus, a practical concentration of an aqueous solution of an antibacterial agent for fiber treatment (concentration of silver N-stearoyl-L-glutamate of about 18 ppm, N-stearoyl-L-
Copper glutamate concentration about 12ppm, cationic surfactant concentration about 60ppm, amphoteric surfactant concentration about 60ppm,
A nonionic surfactant concentration of about 75 ppm and a carboxymethyl cellulose concentration of 3 ppm, Example 24) were prepared.

[Experiment] The antibacterial activity of the antibacterial agent for fiber treatment of the present invention was tested. (1) Antibacterial and Washing Resistance Test Among the antibacterial agents for fiber treatment of the above examples, the metal salt concentration is 30.
The following experiment was conducted using ppm. An underwear cotton cloth was used for the experiment. The cotton cloth for underwear was dipped in the antibacterial agent solution of each example, pulled up, treated at a squeezing ratio of 100%, and then dried (washing frequency: 0, L-0). next,
In order to test the washing resistance of the above-mentioned treated product, using a household washing machine, wash with neutral detergent detergent at a concentration of 2 g / l for 5 minutes, wash with running water for 2 minutes, Further, it was washed with running water for 2 minutes and dehydrated and dried. Then, the antibacterial test was performed for each of the number of washing times 0 (L-0), the number of washing times 10 (L-10), and the number of washing times 20 (L-20). In addition, the above-mentioned test was similarly performed for benzalkonium chloride alone (concentration: 500 ppm, comparative example 1) and a silicone-based quaternary ammonium salt (concentration: 0.5%, comparative example 2). In the antibacterial test, a strip of a test sample was prepared and used as a test piece. Klebsiella pneumoiae ATCC 435
Place the test piece on the agar medium inoculated with 2) and
After culturing for 4 hours, the presence or absence of growth of bacteria around the test piece was examined.
The results are as shown in Table 1.

[0072]

[Table 1]

◯: No bacterium growth was observed on the test piece, and a halo was generated. X: Growth of bacteria was observed on the front surface or the back surface of the test piece.

(2) Bactericidal test The following strains were used as test strains. Escherichia coli IFO 3301 (Escherichia coli) Staphylococcus aureus IFO 12732 (Staphylococcus aureus) Then, the above bacteria were cultured for 24 hours at 37 ° C. in a culture medium for enrichment (for Escherichia coli and Staphylococcus aureus, AATCC Broth was used). A bacterial solution for inoculation was prepared and used as a medium (for E. coli, Staphylococcus aureus, AATCC Agar
The experimental medium was prepared by adding 1 ml of the inoculum to 150 ml of the experimental medium, dispensed into a sterile petri dish, and allowed to solidify to prepare a large number of experimental plate mediums. A polypropylene sheet having a circular hole with a diameter of 2 cm in the center was placed on a sterile petri dish filled with the above-mentioned experimental plate medium so that the circular hole was located almost in the center of the petri dish, and each bacterium was cultured. About 0.5 ml of the even-numbered antibacterial agent for fiber treatment of Examples 2 to 24 was spray-coated on the petri dish. Then, the growth state of the bacteria after culturing at 37 ° C. for 24 hours was confirmed. as a result,
In all the petri dishes, a portion of about 2 to 2.5 mm in which bacteria did not grow was observed in the center, and vigorous growth of bacteria was observed in the portions other than the above center.

[0075]

The antibacterial agent for fiber treatment of the present invention contains an N-long chain acylamino acid salt of a metal having an antibacterial effect in an aqueous solution of a cationic surfactant. Since this antibacterial agent for fiber treatment is an aqueous liquid, it can be diluted with water, and it is not necessary to use an organic solvent and fiber treatment is easy. Since the antibacterial agent for fiber treatment contains a cationic surfactant and an N-long chain acylamino acid salt of a metal having an antibacterial action, the antibacterial activity of the cationic surfactant and the N-length of a metal having an antibacterial action are possessed. Chain acyl amino acid salt (antibacterial metal salt)
It has both of the antibacterial power of. Furthermore, the metal N-long-chain acylamino acid salt having an antibacterial action is hardly soluble in water, and therefore does not easily dissolve after being attached to the fiber,
It is safe because there is substantially no outflow of only metal, and it exhibits the antibacterial activity of metal and has wash resistance.
Further, the cationic surfactant not only functions as a dispersant (aggregation inhibitor) for the antibacterial metal salt, but also assists the adhesion of the antibacterial metal salt to the fiber. Therefore, by containing both, the antibacterial agent for fiber treatment of the present invention can impart a high antibacterial action to the fiber. The N-long-chain acylamino acid antibacterial metal salt is extremely toxic since it is an amino acid that forms the basic skeleton.

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) D06M 13/463 A01N 37/44

Claims (6)

(57) [Claims] 1. A cationic surfactant is added to an aqueous solution.
Water-soluble N-long-chain acylamino acid salt and gold having antibacterial properties
Formed in the aqueous cation solution with a water-soluble salt of the genus
N-long chain acylamino acid salt of metal having antibacterial action
N-long chain of metal containing and having the antibacterial action
Aggregation of the acyl amino acid salt is caused by the cationic surfactant.
N-long-chain acyl of metal having the above-mentioned antibacterial action
Amino acid salt is contained in a dispersed state without precipitation
An antibacterial agent for fiber treatment, which is characterized in that 2. The antibacterial agent for fiber treatment according to claim 1, wherein the antibacterial agent for fiber treatment contains two or more kinds of N-long chain acylamino acid salts to which different metals having an antibacterial action are bound. Wherein the metal is silver, copper, lead, according to claim 1 or selected from the group consisting of zinc or tin is any one
Or the antibacterial agent for fiber treatment according to 2 . 4. The antibacterial agent for the fiber treatment, textile treatment antimicrobial agent according to any one of claims 1 contains a non-ionic surfactant 3. 5. The antibacterial agent for fiber treatment according to any one of claims 1 to 4 , wherein the antibacterial agent for fiber treatment contains an amphoteric surfactant. 6. The antibacterial agent for fiber treatment according to any one of claims 1 to 3 , wherein the antibacterial agent for fiber treatment contains a nonionic surfactant and an amphoteric surfactant.