JPH10204773A - Deodorant fiber structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a deodorant fiber structure comprising fibers to which deodorant inorganic particles having an alkali compound adhered thereto are adhered with a binder, and capable of easily removing the odor of an aldehyde contained cigarettes, etc. SOLUTION: This deodorant fiber structure comprises fibers to which the deodorant inorganic particles of an oxide or composite oxide containing one or more kinds of elements selected from the group consisting of titanium, zirconium, zinc and silicon are adhered preferably in an amount of 0.5-5wt.% (based on the fiber structure) with a binder. Therein, an alkali compound such as the hydroxide of an alkali(ne earth) metal is stuck to the inorganic particles preferably in an amount of 10-30wt.% (based on the deodorant inorganic particles).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a novel deodorant fiber structure. More specifically, the present invention relates to a deodorant fiber structure exhibiting an excellent deodorant effect in a field where removal of odors including a plurality of malodor components typified by tobacco odor is required.

[0002]

2. Description of the Related Art With the diversification of living environments aiming at comfortable living, human interest in odors has increased significantly, and likes and dislikes have become remarkable. For example, the smell of cigarettes is a bad smell for non-smokers, and there is a growing desire to remove such familiar stench.

[0003] Conventionally, in order to achieve the object of removing malodor by using a fiber structure, a fiber raw material mainly composed of a thermoplastic polymer compound having a fiber forming ability and a deodorant is melt-spun. (Japanese Unexamined Patent Publication No. 2-157040) and a method of applying a deodorant via a polyurethane resin composition in post-processing (Japanese Unexamined Patent Publication No. 2-269).
875) and a method using a polyester resin (Japanese Patent Laid-Open No. 7-216751) have been proposed, and a fiber structure capable of removing malodorous components such as ammonia and hydrogen sulfide has been developed.

[0004] In such a fiber structure, a large number of deodorant inorganic fine particles capable of removing four major malodors represented by ammonia, hydrogen sulfide, trimethylamine and methyl mercaptan have been developed, and a thermoplastic polymer has been developed. It has been used by methods such as kneading into a compound or fixing to a fiber via a resin binder.

However, the malodor in actual life is not due to a single malodorous gas, but is often a complex odor in which several malodorous gases are mixed. Even if cigarette odor is taken as an example, in addition to bad odors caused by nitrogen-containing substances such as ammonia and trimethylamine, its composition is complicated such as odor of sulfur-based substances such as hydrogen sulfide, acid odor such as acetic acid, and odor of aldehyde. It was extremely difficult to remove these complex odors with a single deodorant. Until now, there have been no inorganic fine particles that have deodorant properties for acetaldehyde odor, which accounts for a large weight of tobacco odor.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems and proposes a deodorant fiber structure which is effective not only for the four major malodors but also for the acetaldehyde odor contained in tobacco odors and the like. It is in.

[0007]

SUMMARY OF THE INVENTION The present invention is directed to a deodorant fiber structure comprising fibers in which deodorant inorganic fine particles to which an alkali compound is adhered are fixed by a binder.

The fibers used in the present invention include cotton,
Natural fibers such as silk, hemp, wool, rayon, Bemberg,
Semi-synthetic fibers such as acetate, and synthetic fibers such as polyester, nylon, polyacrylonitrile, and polypropylene, and mixed fibers thereof. Of these, fibers using polyester fibers are particularly preferred.

The polyester fiber as used herein means terephthalic acid as a main dicarboxylic acid component and at least one glycol, preferably at least one alkylene glycol selected from ethylene glycol, trimethylene glycol, tetramethylene glycol and the like. It is made of polyester which is the main glycol component. The polyester fiber may be modified by copolymerizing and / or blending the third component as necessary.

[0010] The polyester fiber may contain optional additives such as a catalyst, a coloring inhibitor, a heat-resistant agent, a flame retardant, an antioxidant, and inorganic fine particles, if necessary.

Further, the polyester fiber used in the present invention may be a polyester fiber which has been subjected to alkali weight reduction, and the alkali weight reduced polyester fiber increases the contact area between the binder and the polyester fiber and consumes it. It is preferably used because the durability of the odor function can be improved.

The fibers constituting the deodorant fiber structure of the present invention include the above-mentioned polyester fibers and, if necessary, natural fibers such as cotton and wool, recycled fibers such as rayon and acetate, and synthetic fibers other than polyester fibers. May be used in combination with these fibers, mixed knitting, and woven products.

The form of the deodorant fiber structure of the present invention may be a woven fabric, a knitted fabric, a non-woven fabric, a fabric obtained by gathering fibers in a string form, or the like, and is conventionally used as an aggregate of fibers according to the application. Is used.

Next, the deodorant inorganic fine particles used in the present invention include at least one selected from the group consisting of titanium, zirconium, zinc, aluminum and silicon.
Is used made of an oxide or a composite oxide particles made of the species elemental Preferably, BET specific surface area as the shape of the fine particles 50 m ² / g or more, more preferably, in the range of 50 to 300 m ² / g But having an average particle size of 5 μm or less, more preferably 0.5 to 5 μm.
Those having a range of μm can be used.

It is necessary to adhere an alkali compound to these deodorant inorganic fine particles in order to achieve the object of the present invention. As the alkali compound, a hydroxide of an alkali metal and / or an alkaline earth metal, or a compound exhibiting alkalinity such as a carbonate can be used. Among them, a hydroxide of an alkali metal and / or an alkaline earth metal is particularly preferable. Is exemplified.

As a method of adhering an alkali compound to the deodorant inorganic fine particles, for example, a method in which an alkali compound is dispersed and mixed with the fine particles in a solvent and dried at any of room temperature, heating and vacuum. Can be

As another method, the fine particles and the alkali compound are dispersed and mixed in a solvent, preliminarily dried, and then heated to 300 ° C. or more to sinter the alkali compound to the fine particles. Good. The solvent used at this time is not particularly limited, and can be appropriately selected according to the dispersion state, ease of handling, and the like.

The ratio of the alkali compound to be attached is preferably 5 to 70% by weight, more preferably 10 to 50% by weight, and still more preferably 10 to 30% by weight based on the fine particles.
It is. If the proportion of the alkali compound attached is less than 5% by weight, the deodorizing effect on the aldehyde may be insufficient, and if it exceeds 70% by weight, the attachment of the alkali compound tends to be unstable, It is not preferable because the inorganic oxide has a deteriorating effect on the four major malodors originally possessed.

The total amount of the deodorant inorganic fine particles used in the present invention is preferably in the range of 0.5 to 10% by weight, more preferably 0.5 to 5% by weight, based on the fiber structure.
It is.

In the present invention, the binder for fixing the deodorant inorganic fine particles to which the alkali compound is adhered is not particularly limited, but may be an acrylate resin, a urethane resin, a polyester resin, a silicone resin, a melamine resin. A resin such as a resin, a polypropylene resin, a fluororesin or a prepolymer thereof can be used, but from the viewpoint of application requiring a feeling, an acrylate resin, a urethane resin and a prepolymer thereof are preferably used.

The binder or the prepolymer thereof and the deodorant inorganic fine particles are, for example, heptane,
The treatment liquid may be prepared by dissolving in an organic solvent such as acetone, methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate, butyl acetate, mineral terpene, or isopropyl alcohol, and may be used. It can also be used after emulsifying it with a suitable emulsifier, for example, a higher alcohol sulfate salt, an alkylbenzene sulfonate, a higher alcohol polyoxyalkylene adduct, a higher fatty acid polyoxyalkylene adduct, a higher fatty acid sorbitan ester, or the like.

The process of fixing the thus prepared and adjusted deodorant inorganic fine particles to the fiber can be carried out at any stage of raw cotton, yarn, woven or knitted fabric, or nonwoven fabric.

The processing method can be performed by any method such as a dipping method, a pad drying method, a spray method, a coating method, and a laminating method, and can be appropriately selected depending on the form of the fiber structure and the type of the resin solution.

[0024]

Since the deodorant fiber structure of the present invention is made of deodorant inorganic fine particles to which an alkali compound is adhered, not only the above-mentioned four major odors but also particularly to tobacco and the like. It also acts as an effective deodorant fiber structure against the resulting acetaldehyde odor.

Although the mechanism of action in the present invention is not yet clear, when the alkali compound is attached to the deodorant inorganic fine particles, the alkali compound acts as a polymerization catalyst for acetaldehyde to convert acetaldehyde into a non-volatile polyaldehyde. Therefore, it is presumed that not only the four major malodors but also the acetaldehyde odor can be adsorbed on the inorganic fine particles, because of the previously unknown principle of action.

[0026]

The present invention will be described in more detail with reference to the following examples. The percentages are percentages by weight unless otherwise specified. In addition, the evaluation of the deodorizing property was carried out by setting the initial concentration of the odor component to 200 ppm of ammonia and 20 pp of hydrogen sulfide.
m, acetaldehyde 30ppm, total amount 3L,
At a sample amount of 2 g / L and a measuring time of 60 minutes, the residual concentration of the odor component in the container was measured with a detector tube and calculated as a deodorizing rate. The results are all shown in Table 1.

Example 1 10 g of magnesium hydroxide (commercially available) was added to 100 g of Zaobatac PSB (Si: Zn = 50: 50 composite oxide: 30% solid content: Daiwa Chemical Co., Ltd.) as deodorant inorganic fine particles. Dry at 60 ° C. with stirring.

Elastron MF-25 (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) is used as a urethane resin used as a binder by using a polyester fabric (75 denier / 24 filaments) and a plain fabric (basis weight: 100 g / m ² ) used for the weft ) Using 1.0% and padding treatment with an aqueous dispersion containing 2.0% of the above Zovatack PSB (wet.p.
ick. (100% up), dried at 130 ° C. for 3 minutes, and then heat-treated at 180 ° C. for 1 minute.

Example 2 Deodorant inorganic fine particles used in Example 1: Zaobatak PSB (solid content 30 manufactured by Daiwa Chemical Co., Ltd.)
%) To 100 g of magnesium hydroxide (commercially available product), and dried at 60 ° C. with stirring.
The procedure was carried out under the same conditions as in Example 1 except that the sintering process was used.

Example 3 Example 3 was carried out under the same conditions as in Example 1 except that calcium hydroxide was used instead of magnesium hydroxide.

Example 4 Example 1 was carried out under the same conditions as in Example 1 except that sodium carbonate was used instead of magnesium hydroxide.

Comparative Example 1 The deodorant inorganic fine particles used in Example 1 were used without adhering magnesium hydroxide thereto, and the other conditions were the same as in Example 1.

[Comparative Example 2] Instead of using 2.0% of the deodorant inorganic fine particles to which magnesium hydroxide was adhered used in Example 1, deodorant inorganic fine particles to which no magnesium hydroxide was adhered (Zobattac) PSB) A 2% aqueous dispersion was prepared using the urethane resin used in Example 1 with 2% of a binder, and 1.0% of magnesium hydroxide was added to the aqueous dispersion and mixed. The same woven fabric as in Example 1 was subjected to a putting treatment and processed under the same conditions as in Example 1.

Comparative Example 3 The same fabric as that used in Example 1 was evaluated without performing any processing using deodorant inorganic fine particles (blank test). In Examples 1 to 4, there was not only a deodorizing effect on ammonia and hydrogen sulfide, which are conventional odors, but also a deodorizing effect on acetaldehyde odor. Comparative Examples 1 and 2 had a deodorizing effect on ammonia and hydrogen sulfide, which are conventional odors, but had little or no effect on acetaldehyde odor. Further, in Comparative Example 2, spots of the deodorant inorganic fine particles were generated during the process of imparting the deodorant inorganic fine particles to the woven fabric, and this is not industrially applicable.

[0035]

[Table 1]

Alkaline same bath *: Processed by mixing alkali with putting processing solution

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI D06M 11/44

Claims (3)

[Claims] 1. A deodorant fiber structure comprising fibers in which deodorant inorganic fine particles to which an alkali compound has adhered are fixed by a binder. 2. The deodorant fiber structure according to claim 1, wherein the alkali compound is a hydroxide of an alkali metal and / or an alkaline earth metal. 3. The deodorant according to claim 1, wherein the deodorant inorganic fine particles are oxides or composite oxides containing at least one element selected from the group consisting of titanium, zirconium, zinc, and silicon. Fiber structure.