JPH0824321A - Deodorant, antimicrobial and pest-repellent foam and its production - Google Patents

Abstract

PURPOSE:To provide a foam which is deodorant, antimicrobial and repellent to pests, such as tick, and is capable of easily maintaining hygiene and comfortability at all times by imparting deodorant, antimicrobial and pest repellent effects to the foam itself. CONSTITUTION:This deodorant, antimicrobial and pest-repellent foam 10 has a network structure 12 and air cells 14 formed in the network structure 12. A clathrate compd. 16 formed by using an essential oil component, such as cineole, having the deodorant, antimicrobial and pest-repellent effects as a guest compd. and clathrating this guest compd. by a host compd.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvements in foams used for automobile seats, bed mattresses and the like, and more particularly to foams having deodorizing, antibacterial and pest repellent effects and a method for producing the same.

[0002]

2. Description of the Related Art Various kinds of bacteria are present around humans in ordinary daily life, and have a considerable influence on our hygiene and maintenance of cleanliness. For example, due to Staphylococcus aureus that is always present on the skin of the human body, urea in sweat causes ammonia to cause odor, and stuffiness caused by athlete's foot, itch, etc. are caused by bacteria such as Trichophyton. is there. Further, not only in daily life but also in hospitals, for example, nosocomial infection due to bacteria has become a problem. For this reason, conventionally, it has been strongly desired to maintain hygiene and comfort by preventing or eliminating damages caused by these bacteria and odors.

In our daily life, various foams such as automobile seat materials and bed mattresses are used for the purpose of absorbing impact energy, absorbing vibration, absorbing sound, and reducing weight. . These foams are
Bacteria propagate and adversely affect hygiene, and also the odorants generated due to bacteria and the resin itself that is the raw material of the foam, depending on the properties of the additives used during production,
This may cause an offensive odor and may cause human discomfort because the foam is generally used in direct or indirect contact with the human body. For this reason, it is desirable to antibacterial and deodorize these foams.

In this case, in general, it has been dealt with by leaving it as it is, or by taking special means such as deodorant and deodorant spray.

[0005]

However, using special means such as deodorant spray is very troublesome.
In particular, some foams, such as foams used for automobile seat materials, cannot be easily washed, unlike textile products such as clothes. For this reason, it is particularly desirable to easily antibacterial and deodorize the foam.

In view of these points, some foams having a deodorizing effect have been provided so far, but our hygienic and comfortable life is not only caused by bacteria and odors, but also by various pests. Being threatened. For example, pests such as mites may parasitize sheet materials of automobiles, bed mattresses, sofa cushions, etc., and the mites may be bitten to damage the skin. As described above, it is considered that the foam used in contact with human skin is extremely required to have antibacterial and deodorant properties, and especially to have a repellent action against harmful insects such as mites. In this case, it takes time and effort to prevent damage such as insect bites by using a special means such as insect repellent spray as in the conventional case.

Here, not only antibacterial and deodorant, but also an essential oil such as eucalyptus oil, lemon oil, and rose geranium oil is contained as a component capable of exerting a repellent action against harmful insects such as mosquitoes. It is known that essential oil components such as cineol and limonene are suitable. Many of these essential oil components also have aromaticity and deodorizing property by sterilization, and can be said to be suitable for use in foams that are often used in contact with the human body.

In this case, some of the foams cannot be easily washed as described above, and some are used for a long period of time. Therefore, when the foam is formed by supporting these essential oil components, Deodorization and antibacterial properties of essential oils,
If the pest repellent action cannot be exerted continuously, it is not always effective in terms of practicality. In addition, since some foams are used in contact with water, such as various filters and sponges for washing dishes, the essential oil component is released or dissolved in water even when exposed to water. Therefore, it is necessary to impart water resistance and the like so as to stably exert the deodorizing action of the essential oil component so that the pest repellent action is not deteriorated. This is also a problem to be solved by the conventional foam having a deodorizing effect.

The object of the present invention is to avoid the above-mentioned drawbacks, and by carrying an essential oil component to exert deodorizing, antibacterial and pest repellent effects, it is possible to easily maintain hygiene and comfort, and at the same time, essential oil Deodorant / antibacterial / pest repellent foam capable of effectively and practically deodorizing and repelling pests by imparting a sustained release property to the components to improve the durability and water resistance of actions such as pest repellent. And its manufacturing method.

[0010]

As a first means for solving the above problems, the present invention uses an essential oil component having a deodorizing / antibacterial / pest repellent effect as a guest compound and the guest compound as a host compound. It is intended to provide a deodorizing / antibacterial / insect-repelling foam, which is characterized in that it is formed by supporting a clathrate compound in a network structure.

As a second means for solving the above problems, the present invention uses an essential oil component having a deodorizing / antibacterial / insect-repelling action as a guest compound, and includes this guest compound with a host compound. The present invention provides a method for producing a deodorant / antibacterial / pesticidal repellent foam, which comprises foaming a foam material containing the inclusion compound, and then foam-molding the foam material.

Further, in the present invention, in the first and second means for solving the above problems, the host compound is particularly 1,1,2,2-tetrakis (hydroxyphenyl) represented by the following general formula [1]. It is intended to provide a deodorizing / antibacterial / pest repellent foam characterized by being ethane (hereinafter referred to as TEP) and a method for producing the same.

[0013]

Embedded image

Further, in the first and second means for solving the above problems, the present invention is characterized in that the essential oil component having a deodorizing / antibacterial / pest repellent action is particularly cineole. A repellent foam and a method for producing the same. In this case, it is needless to say that TEP can be used as the host compound as described above.

[0015]

When a foam is formed by supporting an inclusion compound formed by including an essential oil component as described above, the essential oil component causes the foam itself to deodorize and has an antibacterial effect.
By exerting a pest repellent effect, it is possible to easily maintain hygiene and comfort.

Further, when the inclusion compound is mixed with the foam material constituting the foam and the foam compound is integrally foam-molded, deodorizing, antibacterial,
A pest repellent foam can be obtained, and deodorization, pest repellent, etc. can be easily realized in the foam.

In these cases, in particular, when TEP is used as a host compound and an essential oil component which is a guest compound is included and supported in a network, the release rate of the essential oil component is slow and the essential oil component is gradually diffused ( That is, the sustained-release property is high), the deodorizing, antibacterial, and pest repellent action of the essential oil component can be reliably exerted over a long period of time, and the foam can be continuously deodorized, pest repellent, and antibacterial. Further, this sustained release property is similarly exhibited in an aquatic system, and since release or dissolution of the essential oil component in water is controlled, water resistance is improved, and deodorization, antibacterial effect, etc. can be effectively performed. The practicability of the foam used in contact with water can be ensured.

[0018]

EXAMPLE An example of the present invention will be described in detail with reference to the drawings. FIG. 1 shows the deodorant / antibacterial / pest repellent foam 1 of the present invention.
It is a conceptual diagram of 0, and this deodorant / antibacterial / pest repellent foam 1
0 has a network 12 and bubbles 14 formed between the networks 12.

This deodorant / antibacterial / pest repellent foam 10 is
As shown in FIG. 1, an essential oil component having a deodorizing / antibacterial / pest repellent action is used as a guest compound, and an inclusion compound 16 in which this guest compound is included by a host compound is used as a network 12
It is formed by being carried inside.

As the essential oil component which is the guest compound, any essential oil component can be used as long as it can exhibit the effects of deodorization, antibacterial action, pest repellent and the like.
The main ones are cineol, limonene, hinokitiol, menthol, terpineol, which are natural essential oil ingredients.
Examples thereof include borneol, nopol, citral, citronellol, citronellal, geraniol, linalool, dimethyloctanol, nopinene, phenylethyl alcohol and piperonal. These essential oil components have pest repellent, deodorizing and antibacterial actions, and since they also have aromatic properties and are often used as perfumes, they are often used around humans. It can be said that the antibacterial / pest repellent foam 10 is suitable for exerting deodorizing, pest repelling, and antibacterial actions.

These essential oil components are mainly contained in natural essential oils. For example, cineol is eucalyptus oil, rosemary oil, etc., limonene is orange peel oil, lemon oil, bergamot oil, and watermelon. Oil, pine needle oil, peppermint oil, etc., menthol in peppermint oil, borneol as lavender oil, rosemary oil as acetate ester, citral in lemon oil, lemongrass oil, geranium oil, etc., citronellal in citronella oil, eucalyptus For oil,
Linalool is contained as a main component of linaloe oil and scented oil, as an ester in bergamot oil, lavender oil and the like, and geraniol is contained in rose oil, geranium oil, citronella oil and the like, respectively. In addition, those produced by chemical synthesis may be used. For example, cineole and terpineol can be obtained by boiling terpine with an acid to dehydrate it. Further, these essential oil components may be used alone, or may be used by mixing two or more kinds as necessary.

On the other hand, as the host compound, various host compounds can be used as long as they can include an essential oil component which is a guest compound. Among them, in particular, TEP, that is, the following general formula [1] is used. It is preferred to use the indicated 1,1,2,2-tetrakis (hydroxyphenyl) ethane. This TEP has poor solubility in water and has a slow release rate of the essential oil component, and thus has a high sustained release property of the essential oil component.

[0023]

[Chemical 4]

As a concrete example of this TEP, 1, 1,
2,2-tetrakis (3-hydroxyphenyl) ethane and the like can be mentioned, but in particular, 1,1,2,2-tetrakis (4-hydroxyphenyl) ethane (hereinafter, referred to as the following structural formula [2] It is desirable to use (TEP-DF). This is because the clathrate compound obtained using TEP-DF as a host compound is solid at room temperature and easy to handle.

[0025]

Embedded image

The clathrate compound 16 is a liquid guest compound such as cineol which is a liquefied guest compound in a slurry which is stirred while being heated until a host compound such as TEP is dissolved in a solvent such as methanol, ethanol, isopropanol and methyl ethyl ketone. The essential oil component is gradually added dropwise to cause a reaction, and after the reaction, the solvent is evaporated and distilled, if necessary, or cooled to generate a precipitate, which can be obtained by filtration.

The inclusion compound 16 used in the present invention is
It can be easily produced without using a solvent. In this case, the solid matter precipitated by directly adding TEP to the liquid essential oil component and causing the reaction is separated by filtration in the same manner as the above method. Thus, the target inclusion compound 16 can be obtained. In any of the above two production methods, the reaction is performed at 0 ° C to 100 ° C, preferably 10 ° C to 60 ° C for 5 minutes to 24 hours.

The inclusion compound obtained as described above is
It is possible to provide physical properties suitable for supporting the essential oil component on the network 12 of the deodorant / antibacterial / pest repellent foam 10 without impairing the excellent deodorizing, antibacterial, and pest repellent actions of the essential oil component.

In particular, when TEP (particularly TEP-DF) is used as the host compound, the release rate of the essential oil component is slow even in an aqueous system (that is, the sustained release property is high),
Improves deodorant, antibacterial, pest repellent, etc. durability, water resistance and other physical properties. In addition, TEP (host compound)
Usually, 2 to 4 moles of essential oil component (guest compound)
Can be included.

An example of a more specific method for producing the clathrate compound 16 used in the present invention is as follows: 1.0 g (2.5 g) of TEP-DF manufactured by Asahi Organic Materials Co., Ltd. in 5 ml of methanol.
1 mmol) and 1.55 g (10.04 mmol) of 1,8-cineole was gradually added dropwise to a solution stirred while heating while TEP-DF was completely dissolved.
The reaction was carried out at 10 ° C with stirring for 10 minutes. afterwards,
Immediately, the filtrate was allowed to stand at room temperature to precipitate a crystal product, and the precipitate was separated by filtration and then vacuum dried at room temperature to obtain an inclusion compound 16 used in the present invention as a white crystal product. Incidentally, the clathrate compound 16 thus obtained is
The guest (cineole) / host (TEP) efficiently included the essential oil component at a molar ratio of 4.0.

The material for forming the network 12, specifically, the foam raw material is not particularly limited as long as the liquid raw material forms the three-dimensional network 12 by some reaction. It can be used, and typical examples thereof include urethane, vinyl chloride, polyethylene, EVA resin, and silicone.

These foam raw materials may be appropriately selected and used according to the use of the deodorizing / antibacterial / pest repellent foam 10, for example, deodorizing / antibacterial / deodorant / antibacterial materials used for automobile seat materials and headrest materials. When the pest repellent foam 10 is used, urethane that is excellent in vibration absorption and riding comfort can be used as the urethane foam. As described above, since various foam raw materials can be used as the network 12 constituting the deodorizing / antibacterial / pest repellent foam 10, it is required depending on the use of the deodorizing / antibacterial / pest repellent foam 10. Deodorization, antibacterial, pest repellent foam 10 such as vibration absorption can be deodorized, antibacterial, etc. without impairing the original functions. Further, the foam 10 formed from these foam raw materials may be soft, semi-hard, or hard, and further, a foaming agent, a foam stabilizer, a dispersant or the like is added to these foam raw materials. Of course, the agent may be added and used.

Since the foam raw materials such as urethane, vinyl chloride, polyethylene, EVA resin, and syrincon exemplified above do not release the essential oil component or melt the clathrate compound 16 by the heat at the time of foaming. Can be said to be a suitable example. That is, in the present invention, for example, a heat-sensitive essential oil component such as cineol is clathrated by a host compound, particularly TEP having a relatively high decomposition temperature of 160 ° C. to withstand the heat when foaming the foam raw material. As described above, the processability of the essential oil component is improved, and the essential oil component can be supported on the network 12 without impairing the effects of deodorization, pest repellent and the like. Therefore, in the present invention, of the materials capable of forming the network 12, any material can be used as long as it does not cause melting or the like of the clathrate compound 16 by heat during foaming. As a result, the foam 1 has the action of repelling harmful insects contained in the essential oil component.
It can be effectively exhibited at 0 itself.

The bubbles 14 may be continuous bubbles communicating with the outside, or may be independent bubbles shielded from the outside. In this case, it is not limited to the case where all of the bubbles 14 are continuous bubbles, and it goes without saying that both of them may be mixed, such as one in which independent bubbles are partially formed.

Next, the method for producing the deodorant / antibacterial / pest repellent foam 10 of the present invention will be described. The inclusion compound 16
Is mixed with the foam raw material, and then the foam raw material mixed with the inclusion compound 16 is foam-molded. In this case, in order to mix and disperse the clathrate compound 16 in the foam raw material, an appropriate dispersing device such as a ball mill, a grind mill, a roll mill or a speed run mill can be used. Further, the deodorizing / antibacterial / pest repellent foam 10 can be formed into a predetermined shape according to the application by pouring the foam raw material mixed with the clathrate compound 16 into a molding die for foam molding. In this way, when exerting the action of deodorization and the like, it is possible to easily obtain the deodorizing / antibacterial / pest repellent foam 10 without using special equipment, etc., and easily deodorize or repel pests in the foam. Can be realized.

In mass production, it is necessary to pay attention to the conventional process such as mixing condition and temperature control, but one shot method, semi-prepolymer method, complete prepolymer method, floss foaming method, etc. The use of the deodorizing / antibacterial / pest repellent foam 10 is not limited to any of the above, and is not limited to any of the continuous slab method, the injection method, the molding method, the spraying method, etc. It can be selected as appropriate.

Thus, at least at the same time as the foaming step of the deodorizing / antibacterial / pest repellent foam 10, the essential oil component is carried in the network 12 of the deodorizing / antibacterial / pest repellent foam 10 to prepare the existing foam or Since it is possible for the foam itself to exhibit deodorization, antibacterial action, and pest repellent action by the essential oil component without applying or immersing chemicals such as bactericide to the foam product after the fact, time and effort are required. It is possible to easily maintain hygiene and comfort without applying pressure.

Finally, the use of the deodorant / antibacterial / pest repellent foam 10 of the present invention will be explained. First, the deodorant / antibacterial / pest repellent foam 10 of the present invention is used for automobile seat materials, headrest materials, lining materials, etc. Can be used as
In this case, the inside of the vehicle can be kept comfortable by the deodorizing effect, and the inside of the vehicle can be kept clean by the antibacterial effect.
The pest repellent action can prevent the occupant from being bitten by ticks and the like. In particular, deodorizing, antibacterial, and pest repellent can be achieved without applying any special means, and since the effect is persistent, it cannot be easily washed, etc. It is useful to use it as a sheet material or the like.

The deodorant / antibacterial / pest repellent foam 10 of the present invention is also used as a bed mattress, a mattress used as an underlay of a bedding, a material for bedding such as pillows and furniture, and further used for clothes. It can also be used as a shoulder pad. In this case, antibacterial and deodorizing effects prevent sweat odor and body odor, and also prevent damage by mites and the like. In particular, by using the mattress of the present invention in a medical bed or the like, it is possible to prevent nosocomial infections due to bacteria and is useful.

Further, by using it as a lining material for shoes, it is possible to contribute to the maintenance of hygiene in shoes that are apt to become a hotbed for bacterial growth due to sweat or the like, foul odor, and athlete's foot. Further, it can be considered to be used as a sponge for washing dishes, washing automobiles and the like. In this case, by using the deodorizing / antibacterial / pesticidal repellent foam 10 of the present invention which is excellent in sustained release of essential oil components even in an aqueous system, even those used in contact with water such as sponges can be used. ,
It can be used practically without impairing its deodorizing and antibacterial effects. Besides, it can be considered to be used as an element of various filters.

Of course, the use of the deodorant / antibacterial / pest repellent foam 10 of the present invention is not limited to the above, and it can be effectively used in a wide variety of fields using foams. In addition, in these foam products, it is not always necessary to form the deodorant / antibacterial / pest repellent foam 10 of the present invention as a whole, and the foam product may be used as a part of the surface layer or the like.

[0042]

According to the present invention, as described above, since the inclusion compound formed by inclusion of the essential oil component is carried to form the foam, the foam itself is formed by these essential oil components. However, in addition to deodorizing and antibacterial action, it also has the practical benefit of exerting pest repellent action and easily maintaining hygiene and comfort.

Further, according to the present invention, as described above, since the clathrate compound is mixed with the foam material constituting the foam and the foam compound is integrally foam-molded, special equipment is required. It is possible to easily obtain a deodorant, antibacterial, pest repellent foam without needing to do so, and there is a practical advantage that deodorization, pest repellent, etc. can be easily realized in the foam.

Particularly, as described above, when TEP is used as a host compound and the essential oil component which is the guest compound is included and supported in the network, the release rate of the essential oil component is slow and the essential oil component is gradually released ( That is, the sustained release property is high), deodorization of essential oil components, antibacterial and pest repellent effects can be reliably exerted over a long period of time, and the deodorant, pest repellent and antibacterial properties of foams can be sustained. In addition, this sustained-release property is similarly exerted in an aquatic system, and the release or dissolution of the essential oil component in water is controlled, so that the water resistance is improved, and deodorization and antibacterial effect are effectively performed. Therefore, there is a practical advantage that the practicability of the foam used in contact with moisture can be secured.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a deodorant / antibacterial / pest repellent foam of the present invention.

[Explanation of symbols]

 10 Deodorant / antibacterial / pest repellent foam 12 Reticulated tissue 14 Bubbles 16 Inclusion compound

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display area A01N 65/00 A C11B 9/00 X Z

Claims (6)

[Claims] 1. An essential oil component having deodorizing, antibacterial and pest repellent properties as a guest compound, and an inclusion compound obtained by including the guest compound with a host compound is carried in a network structure. Deodorant / antibacterial / insect repellent foam. 2. The deodorizing / antibacterial / pest insect according to claim 1, wherein the host compound is 1,1,2,2-tetrakis (hydroxyphenyl) ethane represented by the following general formula [1]. Repellent foam. Embedded image 3. The deodorant / antibacterial / pest repellent foam according to claim 1, wherein the essential oil component having a deodorant / antibacterial / pest repellent effect is cineol. 4. An essential oil component having deodorizing / antibacterial / insect-repelling action is used as a guest compound, and an inclusion compound in which the guest compound is included by a host compound is mixed with a foam material,
After that, a method for producing a deodorant / antibacterial / pest repellent foam, which comprises foam-molding a foam material mixed with the inclusion compound. 5. The deodorizing / antibacterial / pest insect according to claim 4, wherein the host compound is 1,1,2,2-tetrakis (hydroxyphenyl) ethane represented by the following general formula [1]. Method for manufacturing repellent foam. Embedded image 6. The method for producing a deodorant / antibacterial / pest repellent foam according to claim 4 or 5, wherein the essential oil component having a deodorant / antibacterial / pest repellent effect is cineole.