JP2001276202A - Aromatic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an aromatic which can maintain the balance of its perfume composition and, at the same time, can keep an aroma through the whole period of service at the same level as that immediately after the use of the aromatic is started. SOLUTION: This aromatic is composed of a molded body containing at least a perfume and a water-soluble matter which swells upon absorbing water. The molded body is formed in such a way that the contact surface portion of the body absorbs water and forms a swelled layer when the portion comes into contact with the water and the swelled layer gradually dissolves in the water from its surface side correspondingly to the contact amount with the water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the use of the present invention in a room or the like, particularly in a washroom, a toilet or a bathroom having a water supply / drainage port.
The present invention relates to a fragrance capable of emitting a certain scent.

[0002]

2. Description of the Related Art Conventionally, aqueous gel fragrances using water as a carrier have been frequently used from the viewpoint of safety and ease of handling. This gel-like fragrance is usually a gelling agent, a fragrance,
It is made of a composition such as a surfactant and water as a medium, and is heated and uniformly melted, and then cooled and solidified.

[0003]

In such an aqueous gel fragrance, the fragrance is generated by the fragrance exuding and volatilizing on the gel surface together with water. However, the water used as a carrier has an extremely fast volatilization rate,
The period of use as a fragrance is short, and the volatilization amount of water and the volatilization amount of perfume decrease in the later stage of use. There have been various problems such as a problem that the balance of the fragrance composition is easily lost due to volatilization, or water is easily separated from the gel, which significantly lowers the commercial value.

[0004] Accordingly, an object of the present invention is to provide a fragrance which can maintain the balance of the fragrance composition throughout the entire use period and maintain the same level of fragrance as immediately after the start of use.

[0005]

Means for Solving the Problems To achieve the above object, the fragrance according to the present invention comprises a molded article containing at least a fragrance and a water-soluble substance which swells by absorbing water. The body is characterized in that a contact surface portion of the body absorbs water to form a swelling layer, and the swelling layer gradually elutes from the surface into water according to the amount of water contacted.

[0006] That is, the present inventor, by using the molded article having the above structure, has a function similar to that of the gel phase of the gel fragrance by contacting with water as needed, while being initially in a stable solid form. It has been found that a swelling layer having the following formula can be formed, and the present invention has been completed.

[0007] Once the molded article is brought into contact with water, the water swells into the molded article for a while after that, so that the thickness of the swelling layer increases. In the swelling layer thus formed, the fragrance along with the carrier seeps out to the surface of the layer and quickly volatilizes in the outside air, so that a certain level of scent can be supplied.

[0008] Since the formed swelling layer has lower strength than the original molded body, its thickness can be measured by a rheometer. That is, the thickness of the swelling layer in the present invention is determined by using a model CR-300 manufactured by Sun Kagaku Co., Ltd. as a rheometer and straddling the groove of the sample pedestal (having a groove of 10 mm in width and 4 mm in depth) in the lateral direction. The molded body to be the sample is set in such a manner as to be bent, and then an adapter for elasticity with a needle (a rod having a diameter of 3 mm) is applied to the center of the sample in the portion spanned by the groove. (10 mm / min) and calculated by measuring the change in load.

Specifically, the results measured under the above-described measurement conditions are shown on a graph (horizontal axis: time, vertical axis: load). While passing through the swollen layer, the load rises at a substantially constant gradient. Then, when the needle reaches the surface of the molded body that has not swollen, the load rapidly increases at that point. Therefore, the inflection point or the inflection point of the load increase rate on the graph is determined as the thickness of the swelling layer, and the thickness of the swelling layer is calculated from the time required up to that point.

The maximum thickness of the swelling layer obtained by the above measurement is preferably 0.35 mm or more.
More preferably, it is 1 mm or more. If the maximum thickness is less than 0.35 mm, the fragrance contained in the layer volatilizes in a short time, so that it becomes difficult to maintain a certain level of fragrance for a certain period.

When the amount of the fragrance contained in the swelling layer is reduced and the fragrance is weakened, the formed body is brought into contact with an appropriate amount of water again, so that the swelling layer formed first gradually enters the water from the surface. It is eluted and removed, and the water penetrates into the molded body by that much to form a new swelling layer, and it is possible to maintain the initial level of fragrance without breaking the balance of the fragrance composition .

Therefore, in the present invention, although it is possible to exhibit the same scent-release function as a conventional gel fragrance, it is not necessary to adopt a gel form from the beginning, so that a problem of gel separation during transport and storage occurs. It is possible to provide an unprecedented epoch-making fragrance that can supply a constant level of scent during the entire period of use without using it.

Here, the water-soluble substance means a substance having a property of dissolving in water, and in the present invention, various substances which have been conventionally known can be used. For this purpose, it is necessary to use, at least in part, a water-soluble substance having a property of absorbing water and swelling. Examples of those having such properties include, for example, water-soluble polymers such as carrageenan, starch, casein, gelatin, gum arabic, pectin, polyvinyl alcohol, sodium polyacrylate, polyethylene oxide, carboxymethylcellulose, methylcellulose, and viscose. Various surfactants and the like can be mentioned.

If a fragrance having a constitution in which at least a part of the water-soluble substance used is a nonionic surfactant and / or an anionic surfactant is employed, a large amount of fragrance can be uniformly dispersed. Can be mixed into the molded article in a suitable state, and an aromatic having excellent storage stability can be obtained.

The nonionic surfactants used in the present invention include polyoxyethylene-added nonionic surfactants such as higher alcohol ethylene oxide adducts, alkylphenol ethylene oxide adducts, and polyhydric alcohol fatty acid esters. Ethylene oxide adducts, higher alkylamine ethylene oxide adducts, fatty acid amide ethylene oxide adducts, polypropylene glycol ethylene oxide adducts, polyoxyalkylene block polymers, etc .; fatty acid ester type nonionic surfactants of polyhydric alcohols, for example, Glycerol fatty acid ester, pentaerythritol fatty acid ester, sorbitol fatty acid ester, sorbitan fatty acid ester, sucrose fatty acid ester; polyhydric alcohol alkyl ether; Fatty amides Luca Nord amines; the like polyoxyalkylene glycol can be used, not limited thereto.

Of these, selected from the group consisting of polyoxyalkylene block polymers, polyoxyalkylene glycols, polyoxyalkylene fatty acid esters, polyoxyalkylene sorbitan fatty acid esters, polyoxyalkylene alkyl ethers, fatty acid alkanolamides and mixtures thereof. Non-ionic surfactants are preferred, and in particular, polyoxyethylene polyoxypropylene block polymer, polyoxyethylene glycol (molecular weight 200 to 20,000), polyoxyethylene fatty acid ester having 7 to 22 carbon atoms, and polyoxyethylene fatty acid ester having 7 to 22 carbon atoms From polyoxyethylene sorbitan fatty acid esters, polyoxyethylene alkyl ethers having 7 to 22 carbon atoms, fatty acid mono or diethanolamides having 7 to 22 carbon atoms, and mixtures thereof Those selected from that group are preferred. In addition, the nonionic surfactant referred to in the present invention includes a hydrophilic substance having a nonionic surfactant activity such as polyoxyethylene glycol.

The anionic surfactants used in the present invention include sulfonate-based, sulfate-based, ether sulfate-based, phosphate-based, sulfosuccinate-based, ether carbonate-based and taurate-based anionic surfactants. Preferably, at least one selected from the group consisting of: The anionic surfactant is preferably selected from the group consisting of alkyl benzene sulfonates, alkane sulfonates, alkyl sulfates, α-olefin sulfonates and mixtures thereof, particularly preferably having 7 carbon atoms. Alkyl benzene sulfonate having 7 to 22 carbon atoms, alkane sulfonate having 7 to 22 carbon atoms, alkyl sulfate salt having 7 to 22 carbon atoms,
It is selected from the group consisting of α-olefin sulfonates having 7 to 22 carbon atoms and mixtures thereof.

A water-soluble polymer such as an alkali metal salt of carboxymethylcellulose and starch can be added for the purpose of improving the shape retention and smoothly dissolving the water-soluble substance into water. In addition to the water-soluble polymer, it is also possible to add an insoluble inorganic substance having excellent swelling properties such as montmorillonite, kaolin, hydrated silica, aluminum magnesium silicate or hectorite. is there. When an insoluble inorganic substance is added, the substance itself does not dissolve in water, but if a fine powder is used, it does not hinder the elution of the swollen layer.

It is desirable that the above surfactant is contained in an amount of 70 to 80% by weight based on the total weight of the molded article, from the viewpoints of shape retention, solubility and swelling in water, moldability, and the like. The nonionic surfactant is 5% based on the total weight of the molded product.
８０80% is preferable, and when it is less than this amount,
In particular, the shape retention of the molded article decreases. Further, the anionic surfactant is preferably contained in an amount of 5 to 80% by weight based on the total weight of the molded article, from the viewpoint of the shape retention and solubility of the molded article. The fragrance blended in the molded article composition of the present invention can be used without any particular limitation irrespective of liquid or solid, and is preferably contained at 5 to 20% by weight based on the total weight of the molded article. . If the amount of the fragrance is too small, the emitted scent is too weak to be useful as a fragrance, and if the amount of the fragrance is too large, there is an inconvenience that the shape retention of the molded article is reduced.

The molded article composition is not particularly limited as long as it does not prevent volatilization of the fragrance, such as a coloring matter, a deodorant, a defoamer, a preservative or a lubricant, in addition to the fragrance and the water-soluble substance. Can be used without.

Examples of the method for producing a molded article include melting, extrusion, tableting, and press molding. Which manufacturing method is to be selected may be appropriately determined in consideration of the form of the components, the amount of the flavor, the amount of the inorganic salt, and the like.

The method of using the fragrance as described above includes a method in which the molded body is brought into contact with water, then placed in a room as it is, and is brought into contact with water as the fragrance is weakened. A method in which the molded body is installed so as to be movable up and down, and when the fragrance becomes weak, the molded body is submerged and rocked in a container and then pulled up on the water surface, or a method of spraying water from above and / or below the molded body. Can be adopted.

In the present invention, as the water to be brought into contact with the molded product to swell, water used once as in the above apparatus (the molded product composition and the like) as long as the swelling of the molded product and the volatilization of perfume are not prevented. In a state in which the substance is dissolved) can also be used.

Furthermore, if a fragrance is installed in a water supply / drain opening of a kitchen, a bathroom, a washroom, a toilet or the like so that the fragrance is in contact with water every time the water is used, a certain level of fragrance is always provided. It is possible to provide an excellent fragrance that can be maintained.

[0025]

EXAMPLES Hereinafter, the fragrance according to the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

[Examples 1 and 2] Moldings to be used as fragrances were prepared according to the formulations shown in Table 1. Specifically, a predetermined amount of polyoxyethylene polyoxypropylene block polymer and polyoxyethylene alkyl ether
Dissolve by heating to 0-160 ° C, then 60-80 ° C
While keeping the temperature in the above, a fragrance and a dye (only in Example 2) were added and mixed so as to be uniformly dispersed. Then pour into the mold,
Cooling was performed at about 0 to 30 ° C. to obtain a conical shaped body having a lower surface diameter of 34 mm, an upper surface diameter of 30 mm, and a height of 30 mm.

[Comparative Example] A gel-like molded article as a comparative example was prepared according to the formulation shown in Table 1. Specifically, first, a predetermined amount of carrageenan is added to ion-exchanged water and stirred. When the carrageenan is uniformly dispersed, the mixture is once heated to 90 ° C. and cooled to 70 ° C. The polyoxyethylene alkyl ether and the fragrance, which have been mixed in advance, are added to the mixture, and the mixture is further thoroughly mixed, poured into a mold, cooled at about 0 to 30 ° C, and has a lower surface diameter of 34 mm, an upper surface diameter of 30 mm, and a height of 30 mm. A conical gel-like molded product was obtained.

[Evaluation Test] A test was carried out by pouring water into the molded bodies prepared in Examples 1 and 2 and Comparative Example at regular intervals. That is, each of the molded bodies prepared in Examples 1 and 2 and Comparative Example was allowed to stand still in a room (room temperature of 24 to 26).
° C), and 4 liters of water at 25 ° C
The performance was evaluated by measuring the fragrance intensity and weight loss at each of the fifth, tenth, and twentieth days from the start of the test.

At a point in time after the start of the test, when the thickness of the swelling layer was considered to be substantially constant (after the fifth water injection), the thickness of the swelling layer was measured by a rheometer.

[About the measurement of the thickness of the swelling layer] The measurement of the thickness of the swelling layer was performed in accordance with the above-described measurement conditions. FIG. 1 shows a graph of the measurement results, and Table 2 shows the thickness of the swelling layer obtained therefrom. Here, a method of calculating the thickness of the swelling layer will be described with reference to Example 1. As shown in FIG. 1, the inflection point of the increase in load is 15 seconds, and the sample support is 1
Since the swelling layer rises at a speed of 0 mm / min, the thickness of the swelling layer can be obtained by the following equation. (10 × 15) /60=2.5 (mm)

Similarly, in Example 2, the thickness of the swelling layer is 2 mm. Since the sample prepared in the comparative example is a crosslinked gel, no further swollen layer is formed even when water is injected, and no inflection point is observed. In such a cross-linked gel, when the needle of the rheometer enters to a certain extent, as shown in FIG.

[Measurement of Scent Intensity] In the measurement of the scent intensity, each sample was placed in a special-purpose box (volume: 100 liters) and allowed to stand for 20 minutes.
Five skilled sensory testers smelled the internal fragrance from the opening / closing window provided in the box, and requested scoring according to the following six-grade evaluation. Table 3 shows the measurement results of the fragrance intensity and the weight loss measurement results. (Fragrance evaluation criteria) 5 ... Strong 4 ... Slightly strong 3 ... Normal (just good) 2 ... Weak 1 ... Slightly weak 0 ... No smell

[Evaluation Results] From the results in Table 3, it can be seen that in Examples 1 and 2 in which a swelling layer having a sufficient thickness was formed on the surface of the molded product, a substantially constant scent intensity was maintained while the sample was present. On the other hand, in the comparative example, although the scent intensity was sufficient immediately after the start of the test, it can be seen that the scent intensity rapidly decreased with time. This is presumed to be because in both Examples 1 and 2, the previous swelling layer was eluted by water injection to form a new swelling layer, and the fragrance was volatilized smoothly.

Further, in Example 2, the fragrance intensity was maintained at an evaluation 3 slightly lower than that of Example 1, and the weight loss progressed quickly. It can be seen that the fragrance intensity and the period of use can be adjusted.

[0035]

[Table 1]

[0036]

[Table 2]

[0037]

[Table 3]

[0038]

As is clear from the above description, according to the present invention, a swelling layer is formed by contact with water as an fragrance, and the swelling layer is gradually immersed in water according to the amount of contact with water. By using the eluted molded body, it is possible to provide a fragrance capable of maintaining the balance of the fragrance composition over the entire use period and maintaining the same level of fragrance immediately after the start of use.

[Brief description of the drawings]

FIG. 1 is a graph showing the results of measurement of the thickness of a swelling layer in Examples 1 and 2 and Comparative Example.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4C080 AA04 BB02 BB03 CC01 HH09 JJ03 KK03 LL05 LL13 NN14 NN15 NN17 NN18 NN23 NN24 NN25 NN26 NN27 4J002 AB021 AB031 AB041 AB051 AD011 AD021 AD031 CH021 EV031

Claims (5)

[Claims] 1. A fragrance comprising a molded article containing at least a fragrance and a water-soluble substance which swells by absorbing water,
The molded article is characterized in that the contact surface portion of the molded article absorbs water upon contact with water to form a swollen layer, and the swollen layer gradually elutes from the layer surface into water according to the amount of water contacted. . 2. The fragrance according to claim 1, wherein the maximum thickness of the swelling layer is 0.35 mm or more. 3. The fragrance according to claim 1, wherein at least a part of the water-soluble substance is a nonionic surfactant and / or an anionic surfactant. 4. The nonionic surfactant includes a polyoxyethylene polyoxypropylene block polymer, a polyoxyethylene glycol having a molecular weight of 200 to 20,000, a polyoxyethylene fatty acid ester having 7 to 22 carbon atoms, and a 7 to 22 carbon atom. The fragrance according to claim 3, wherein the fragrance is selected from the group consisting of polyoxyethylene sorbitan fatty acid esters, polyoxyethylene alkyl ethers having 7 to 22 carbon atoms, mono- or diethanolamides having 7 to 22 carbon atoms, and mixtures thereof. 5. The method according to claim 1, wherein the anionic surfactant has 7 carbon atoms.
To 22 alkylbenzene sulfonates having 7 to 2 carbon atoms
The fragrance according to claim 3 or 4, wherein the fragrance is selected from the group consisting of an alkane sulfonate having 2 carbon atoms, an alkyl sulfate having 7 to 22 carbon atoms, an α-olefin sulfonate having 7 to 22 carbon atoms, and a mixture thereof. .