JPH10317279A - Fungistatic and mite-proofing synthetic fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an fungistatic and mite-proofing synthetic fiber that is excellent in fungistatic and deodorant effects as well as mite-proofing effect without reduction of these actions even when these fibers are mixed with other natural fibers or synthetic fibers and shows high heat resistance and is suitably useful for wadding. SOLUTION: Synthetic fibers are treated with a treatment agent comprising a quaternary ammonium salt of the formula: [R<1> R<2> N(Me)2 ]X (R<1> is a 5-16C alkyl group, R<2> is a 5-16C alkyl group or benzyl group, X is a gegen anion) and a cationic surfactant at a weight ratio of 50/50-95/5 in an amount of 0.1-1.5 wt.% based on the fiber weight.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic fiber having antibacterial and antimite properties, and more particularly, it has excellent durability in both antibacterial and deodorant effects and is effective even when mixed with other fibers, especially wool. The present invention relates to a synthetic fiber that can exhibit various effects.

[0002]

2. Description of the Related Art Conventionally, carpets, mats, sheets, and the like for the purpose of preventing pathogen infection in hospitals and sanitary fields.
There is an increasing demand for imparting antibacterial properties to curtains, futons, and bedding, or for imparting antibacterial properties to socks and tights for the purpose of deodorizing effects. In particular, hospital-acquired infections caused by MRSA (methicillin-resistant Staphylococcus aureus) and food poisoning caused by pathogenic Escherichia coli O-157 have become social problems in recent years. Considered, the need for antimicrobial efficacy is growing.

Further, with the recent epidemic of allergic diseases such as atopic dermatitis and pediatric asthma, attention has been paid to the elimination of mites which are allergens.

[0004] In response to such demands, as a method of imparting antibacterial properties to fibers, a method of kneading an antibacterial agent into the fibers at the fiber spinning stage, a method of adhering a treating agent containing an antibacterial agent to the fiber surface, and the like. Examples of the antibacterial agent include a metal compound capable of releasing an antibacterial metal ion, a compound in which fine particles such as zeolite carry an antibacterial metal ion and the like, a quaternary ammonium salt-based compound, and the like (Japanese Unexamined Patent Application Publication No. JP, JP-A-3-84066, JP-A-3-2054
No. 36, Japanese Unexamined Patent Application Publication No. H4-194074, Japanese Unexamined Patent Application Publication No.
In particular, quaternary ammonium salt-based antibacterial agents are widely used because of their excellent antibacterial properties and excellent safety, handleability and economic efficiency.

On the other hand, as a method for imparting anti-mite properties,
A method of adhering a treating agent containing an acaricide to the fiber surface and the like have been proposed, and as the acaricide, pyrethroids,
Organochlorine, organophosphorus, carbamate, carboxylate, diphenylether, phthalimide, thiocyanate, etc. (Japanese Utility Model Publication No. 5-32560, JP-A-5-302269, JP-A-8-134720) And the like are disclosed.

[0006] However, none of the above-mentioned agents has a combination of an antibacterial effect and an anti-mite effect. In order to give
It is necessary to use two types of agents each having a single performance. Therefore, not only is the combination, the amount of adhesion, and the method of application restricted, but also the heat resistance of the agent used is poor, so the heat treatment must be performed. There has been a problem that it is difficult to develop it for a necessary use, for example, a hard cotton use.

Further, these antibacterial and anti-mite fibers are
It is often used in combination with cotton, wool, or ordinary synthetic fiber for reasons such as being expensive compared to ordinary fiber and consumers having a strong preference for natural fibers. Since the antibacterial effect of the antibacterial agent is manifested by the attack of the cation component on the cell membrane of the cell, if a strong anion component is present in the fiber used in combination, the cation component is firmly bound by ionic bonding and the antibacterial performance is inhibited. There was a problem that it would. In particular, in the case of cotton fillings mixed with other fibers, various treatment agents (softeners, shrinkage preventive agents, fluorescent whitening agents, etc.) adhering to the surface of other fibers may contain the above-mentioned anionic component. Since wool contains a large amount of a component (sulfur-based compound) that easily deactivates a cation component in the fiber itself, wool has a problem that the above-mentioned phenomenon appears remarkably.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned prior art, and has as its object an excellent antibacterial and deodorant effect and an anti-mite effect, and by blending with other natural fibers or synthetic fibers. Another object of the present invention is to provide an antibacterial and anti-mite-resistant synthetic fiber which is extremely low in these effects, has good heat resistance, and is particularly suitable for cotton filling.

[0009]

Means for Solving the Problems The present inventors have conducted intensive studies to achieve the above object, and as a result, a specific quaternary ammonium salt compound has both an antibacterial deodorant effect having excellent heat resistance and an anti-mite effect. In addition, when the quaternary ammonium salt compound is attached to the fiber surface in the presence of a cationic activator, the inactivation of the antibacterial and anti-mite effects caused by other fibers is suppressed even when mixed with other fibers. Knowing that
As a result of further studies, the present invention has been achieved.

[0010] That is, an object of the present invention is to provide a treatment agent containing a quaternary ammonium salt compound represented by the following general formula and a cationic activator in a weight ratio of 50/50 to 95/5. 0.1 to 1.5 based on the fiber weight
An antibacterial and anti-mite synthetic fiber, characterized in that it is attached by weight. Is achieved. [R ¹ R ² N (Me) ₂ ] X wherein R ¹ represents an alkyl group having 5 to 16 carbon atoms, R ² represents an alkyl group or a benzyl group having 5 to 16 carbon atoms, and X represents a counter anion.

[0011]

DETAILED DESCRIPTION OF THE INVENTION It is important that the quaternary ammonium salt compound used in the present invention is a compound represented by the above general formula, wherein R ¹ has 5 to 16 carbon atoms, preferably Represents an alkyl group of the formulas 8 to 16, wherein R ² has 5 carbon atoms;
To 16 alkyl groups or benzyl groups, preferably 8 carbon atoms
And X represents a counter anion, preferably a halogen ion, particularly preferably a chloride ion. Unlike the quaternary ammonium salt compounds conventionally proposed, such quaternary ammonium salt compounds have both an antibacterial deodorant effect and an anti-mite effect with excellent heat resistance. Inconveniences such as interaction due to the combination of the agent and the anti-mite agent can be avoided, and restrictions on the amount of adhesion and the method of application are also reduced.

Examples of such quaternary ammonium salt compounds include didodecyl dimethyl ammonium chloride, benzyl octyl dimethyl ammonium chloride, octyl cetyl dimethyl ammonium chloride, didodecyl dimethyl bromide and the like. These can be used alone. May be used in combination of two or more.

In the present invention, it is important to use a cationic activator in addition to the quaternary ammonium salt compound in order to exhibit a stable antibacterial and anti-mite effect. Examples of such cationic activators include conventionally known ones such as aliphatic amines, aliphatic quaternary ammonium salts, benzalkoniums, imidazoliums, pyridinium salts, amine oxides and amino ethers. Can also be used. Furthermore, sulfobetaine system,
Carboxybetaine-based, aminocarboxylic acid-based, imidazolinium betaine-based, and lecithin-based amphoteric compounds can also be used. Among them, imidazolium-based activators are preferred from the viewpoint of maintaining the performance and compatibility of the quaternary ammonium salt compound.

The mixing ratio (weight ratio: former / latter) of the cationic surfactant and the quaternary ammonium salt compound in the treating agent is 50/50 to 95/5, preferably 70/30 to 90 /. Must be 10. When the mixing ratio of the quaternary ammonium salt compound is less than 50/50 (50% by weight), the antibacterial and antimite effects are insufficient and the object of the present invention cannot be achieved. On the other hand, when the mixing ratio of the cationic activator is less than 5/95 (5% by weight), the antibacterial and mite-proof effect of the quaternary ammonium salt compound is easily deactivated, and the stable antibacterial and mite-proof effect is obtained. Is not preferred because it is no longer possible to obtain

If the treating agent used in the present invention contains the above-mentioned quaternary ammonium salt compound and a cationic activator, other components such as a nonionic activator can be used as long as the object of the present invention is not impaired. Any compounding agent such as an agent, a leveling agent, and an antistatic agent may be added.

To apply such a treating agent to synthetic fibers,
Any conventionally known method can be adopted, and the timing is also arbitrary as long as it is after fiber formation. Above all, the method of applying in the yarn-making / cotton-making process is preferable because the uniform application is possible and the process is simplified, as compared with the method of applying after forming short fibers. In particular, it is preferable to apply it at a stage after the stretching step and before the heat treatment. Usually, the treating agent is an emulsion, preferably 1 to 20% by weight of the emulsion,
It is applied to the drawn fiber by an immersion method, an oiling roller method, a spray method or the like.

The amount of adhering to the fiber surface (total amount of the quaternary ammonium salt compound and the cationic activator) is from 0.1 to
It must be in the range of 1.5% by weight, preferably 0.5-1.0% by weight. If the amount is less than 0.1% by weight, not only the antibacterial and antimite effects are insufficient, but also the
It is not preferable because troubles such as winding of the fiber around the roller easily occur in the cotton production process. On the other hand, when the content exceeds 1.5% by weight, not only the antibacterial and anti-mite effects are saturated but no further effect can be obtained, but also scum tends to be generated. This is not preferable because problems such as a decrease in performance occur.

Next, the synthetic fibers to which the present invention is applied are not particularly limited as long as they are made of a fiber-forming polymer that can be spun and drawn. Melt spinning of polyester fibers, polyamide fibers, polyolefin fibers, etc. Any of dry or wet-spun fibers such as fibers, acetate fibers, acrylic fibers, and aramid fibers may be used.For example, when used for wadding such as futon cotton, Polyester fibers are particularly preferred from the viewpoints of heat retention and bulkiness.

The synthetic fiber of the present invention may be crimped according to the intended use. In particular, when the synthetic fiber is used as wadding such as futon cotton, the crimped form is a form obtained by mechanical crimping. A coil-shaped or omega-shaped three-dimensional crimped form formed by a difference in shrinkage in the fiber cross-section is more preferable than that because the bulk performance (bulkiness and recovery from elasticity) is better.

Further, the fineness of the single fiber may be appropriately set according to the intended use.
A range of 18 denier is suitable.

[0021]

The present invention will be described in more detail with reference to the following examples. In addition, the antibacterial performance evaluation and the anti-mite performance evaluation in the Examples were measured according to the following methods.

<Antibacterial Performance> The antibacterial performance was measured by the “shake flask” method described in the processing evaluation test manual for antibacterial and deodorized products. Staphylococcus aureus was used as a test bacterium, and the antibacterial performance was indicated by a sterilization rate. When the antibacterial performance of the sample after washing was measured, the washing was performed according to the following method. When the antibacterial performance after the heat treatment was measured, the sample was heat-treated for 10 minutes in a 180 ° C. hot air dryer without washing. .

Laundry Conditions A home electric washing machine was used at 40 ° C. containing 2 g / liter of neutral detergent New Beads (trade name, manufactured by Kao Corporation).
After washing in an aqueous solution for 5 minutes, washing with running water was performed for 2 minutes, and dehydration was performed. Further, washing with running water was performed for 2 minutes, dehydrated, and dried. Repeated washing was performed by repeatedly performing the above operation, and the number of times n was displayed as Ln.

<Mite-control performance> Dermatophagoides pteronyssinus was used as a test mite and powdered feed (0.
Adhesive tape on which an unadhered cotton (0.0 g) has been uniformly adhered, and a thickness of about 0.5 cm from the end of the adhesive tape is used.
25 g), and 0.4 g of the sample was further packed in a thickness of 2 cm. The test mite was placed between the other end of the glass tube to about 4 cm, covered with a high-density fiber, allowed to stand still in the dark, and 2 days later, the number of live mites attracted to the tick rearing medium ( Adhesive tape, powdered feed, and raw cotton for testing) were counted. In addition, the sample is 70 ° C in advance.
The mixture was heated for 10 minutes to reduce mites. Tick repellent rate (%) = (number of live mites in untreated area−number of live mites in treated area) / number of live mites in untreated area × 100

[Example 1] Polyethylene terephthalate having an intrinsic viscosity of 0.64 was prepared by mixing a polyethylene terephthalate having a pore diameter of 0.3 mm and a number of pores of 348.
It is melt-extruded from a spinneret having holes at a spinning temperature of 300 ° C. and a discharge rate of 560 g / min, and a take-up speed of 1050 m / min.
The anisotropically cooled yarn spun in a minute is drawn 2.9 times in warm water at 70 ° C., and then a quaternary ammonium salt compound (dilauryldimethylammonium chloride) and an imidazolium-based activator (oleyl) in an oil bath. (Imidazolium ethosulfate) at a weight ratio of 80/20 and immersed in a bath, squeezed with a crimper so that the total adhesion amount is 0.8% by weight, and cut to a length of 64 mm. The resulting mixture was subjected to a heat treatment to obtain polyester short fibers having a single fiber fineness of 6 denier.

Using 100% of the obtained short fibers (T10
0), usually 50% cotton mixed with polyester short fiber (T /
T), and 3 of 50% mixed cotton (T / W) with wool fiber
The antibacterial performance and the anti-mite performance were evaluated for each level.

[Comparative Examples 1 and 2] As a comparison, a silver-based antibacterial agent Novalon (manufactured by Toa Gosei) was added to polyester in an amount of 0.5%.
The antibacterial and deodorant fibers having a fineness of 6 denier (comparative example 1) and a phthalimide-based acaricide are mixed with 0.12% by weight.
The same evaluation was performed on the tick-preventing fiber (Comparative Example 2) having a single fiber fineness of 6 denier and having a weight percent attached. Table 1 shows the results.

[0028]

[Table 1]

Example 2 In Example 1, the mixing ratio of the quaternary ammonium salt compound (dilauryldimethylammonium chloride) and the imidazolium-based activator (oleyl imidazolium ethosulfate) and the amount of the treatment agent were determined. Example 1 except for the changes as described in Table 2.
Same as. Table 2 shows the results.

[0030]

[Table 2]

[0031]

According to the synthetic fiber of the present invention described in detail above, a quaternary ammonium salt compound having a specific structure represented by the general formula is attached to the fiber surface together with a cationic activator. Even when mixed with wool having a component that can easily deactivate fibers, for example, quaternary ammonium cations, the antibacterial deodorant effect and the anti-mite effect with excellent durability are exhibited together. Accordingly, it can be suitably used as a raw cotton for futon cotton, which is mainly used for blending with wool.

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[Procedure amendment]

[Submission date] June 9, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

[0011]

Quaternary ammonium salt compounds used in the Detailed Description of the Invention The present invention is important that a compound represented by the above general formula, wherein R ¹ is preferably 5 to 16 carbon atoms atoms Represents an alkyl group of the formulas 8 to 16, wherein R ² has 5 carbon atoms;
To 16 alkyl groups or benzyl groups, preferably 8 carbon atoms
And X represents a counter anion, preferably a halogen ion, particularly preferably a chloride ion. Such quaternary ammonium salt compounds, unlike the quaternary ammonium salt compound which has been conventionally proposed, since the both of an and antibacterial effects and Mite effect having excellent heat resistance, the conventional antibacterial agent Inconveniences such as interaction due to the combination of the agent and the anti-mite agent can be avoided, and restrictions on the amount of adhesion and the method of application are also reduced.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction contents]

[0014] mixed in the treating agent and the cationic active agent and the quaternary ammonium salt compound ratio (weight ratio: quaternary ammonium salt compound / cationic active agent)
Is 50/50 to 95/5, preferably 70/30 to 90
/ 10. When the mixing ratio of the quaternary ammonium salt compound is less than 50/50 (50 wt%), it becomes impossible antibacterial mite effect to achieve an object of the present invention becomes insufficient. On the other hand, when the mixing ratio of the cationic surfactant is less than 5/95 (5% by weight),
Antibacterial mite effect of quaternary ammonium salt compound is easily deactivated, undesirably stable antibacterial mite effect can not be obtained.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

The synthetic fiber of the present invention may be crimped according to the intended use. In particular, when the synthetic fiber is used as wadding such as futon cotton, the crimped form is a form obtained by mechanical crimping. A coil-shaped or omega-shaped three-dimensional crimped form formed by a difference in shrinkage in the cross section of the fiber is more preferable than that because the bulk performance ( bulk property, bulk recovery property) is better.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

<Mite-control performance> Dermatophagoides pteronyssinus was used as a test mite and powdered feed (0.
Adhesive tape on which an uncoated cotton (0.1 g) is adhered uniformly, and a raw cotton (0. 1 g) for inspection has a thickness of about 0.5 cm from this end.
025 g), and 0.4 g of the sample was further packed in a thickness of 2 cm. The test mite was placed between the other end of the glass tube to about 4 cm, covered with a high-density fiber, allowed to stand still in the dark, and 2 days later, the number of live mites attracted to the tick rearing medium ( Adhesive tape, powdered feed, and raw cotton for testing) were counted. The sample is 70
The mixture was heated at 10 ° C. for 10 minutes to reduce mite. Tick repellent rate (%) = (number of live mites in untreated area−number of live mites in treated area) / number of live mites in untreated area × 100

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0025

[Correction method] Change

[Correction contents]

[Example 1] Polyethylene terephthalate having an intrinsic viscosity of 0.64 was prepared by mixing a polyethylene terephthalate having a pore diameter of 0.3 mm and a number of pores of 348.
It is melt-extruded from a spinneret having holes at a spinning temperature of 300 ° C. and a discharge rate of 560 g / min, and a take-up speed of 1050 m / min.
After the anisotropic cooling yarns spun min, was stretched 2.9 times in the 70 ° C. warm water, a quaternary ammonium salt compound in an oil bath (dilauryl dimethyl ammonium chloride) and imidazolium activator (oleyl (Imidazolium ethosulfate) at a weight ratio of 80/20 and immersed in a bath, squeezed with a crimper so that the total adhesion amount is 0.8% by weight, and cut to a length of 64 mm. The resulting mixture was subjected to a heat treatment to obtain polyester short fibers having a single fiber fineness of 6 denier.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0029

[Correction method] Change

[Correction contents]

[0029] In Example 2 Example 1, the mixing ratio of the quaternary ammonium salt compound (dilauryl dimethyl ammonium chloride) and imidazolium activator (oleyl imidazolium ethosulfate), and treating agent deposition amount of Example 1 except for the changes as described in Table 2.
Same as. Table 2 shows the results.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI A61L 2/16 A61L 2/16 Z D06M 13/46

Claims (1)

[Claims] 1. A quaternary ammonium salt compound represented by the following general formula and a cationic activator in a weight ratio of 50/50 to
Antibacterial and mite-proof synthetic fiber, characterized in that a treating agent contained at a ratio of 95/5 is attached to the fiber surface in an amount of 0.1 to 1.5% by weight based on the fiber weight. [R ¹ R ² N (Me) ₂ ] X wherein R ¹ represents an alkyl group having 5 to 16 carbon atoms, R ² represents an alkyl group or a benzyl group having 5 to 16 carbon atoms, and X represents a counter anion.