JP2007275343A - Aromatic substance - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an aromatic substance in an aqueous gel shape excellent in the sustained-release of a volatile substance such as perfume. <P>SOLUTION: The aromatic substance comprises aqueous gel containing gelatin, a cross linking agent and the perfume, and the aromatic substance is characterized in that the aqueous gel has a hemispherical or spherical shape, and the bloom strength of the aqueous gel is ≥15 when it has the hemispherical shape and is ≥13 when it has the spherical shape. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a novel fragrance, particularly an aqueous gel fragrance excellent in sustained release of volatile substances such as fragrances.

Aqueous gels containing volatile substances such as fragrances, deodorant ingredients and insect repellent ingredients are widely used as fragrances and insect repellents used in rooms and toilets.
When these fragrances and insect repellents composed of aqueous gels are placed so that the gel is in direct contact with the atmosphere, the volatile substances such as blended fragrances will volatilize into the atmosphere and function as a fragrance or insect repellent. In addition, it also functions as a visual decoration.

The conventional aqueous gels shown above are those using polysaccharides such as alginic acid as a gel base, those using gelatin as a gel base from the viewpoint of gel transparency, and further considering shape retention. Various things, such as what made the gelatin aqueous | water-based crosslinked gel by making the gelatinizer (crosslinking agent) react, are proposed.
Examples of the latter include, for example, an aqueous gel comprising a reaction product of an ethylenically unsaturated compound-maleic anhydride copolymer and gelatin (Patent Document 1), and ammonia of an ethylenically unsaturated compound-maleic anhydride copolymer. An aqueous gel comprising a reaction product of a reaction product and gelatin has been proposed (Patent Document 2).
JP-A-1-297484 JP 2000-192011

  By the way, the fragrance using the above-mentioned aqueous gel is generally placed in such a manner that a predetermined container is filled with the gel, sealed with a film or the like and stored, and the film is peeled off at the start of use so that the gel can be directly contacted with air. And use it. For this reason, the volatilization area of the volatile substance contained in the fragrance will depend on the diameter of the container, and it has been difficult to obtain a satisfactory volatilization rate, for example, the volatilization rate significantly decreases after one month of use.

  As a result of intensive research to obtain a new aqueous gel-like fragrance excellent in sustained release of a fragrance, the present inventors have found that an aqueous crosslinked gel containing gelatin, a crosslinking agent and a fragrance and having a predetermined bloom strength is a hemisphere. Alternatively, the present inventors have found that the volatilization rate can be kept constant until almost all of the fragrance contained therein is volatilized by forming it into a spherical shape and using it as a fragrance.

  That is, the fragrance of the present invention is a fragrance comprising an aqueous gel containing gelatin, a crosslinking agent and a fragrance, wherein the aqueous gel has a hemispherical shape or a spherical shape, and the bloom strength of the aqueous gel is hemispherical. The present invention relates to a fragrance characterized by being 15 or more in the case of a shape and 13 or more in the case of a sphere.

  Further, the present invention relates to a fragrance, wherein the aqueous gel has a hemispherical shape or a spherical shape having a diameter of 1 cm to 5 cm.

When the fragrance of the present invention is used in a plurality of containers, the shape of the fragrance is a hemisphere or a sphere, so that the surface (contact surface) where the fragrances contact each other is a polyhedron such as a hexahedron or an octahedron. As a result, the surface (surface area) on which the fragrance comes into contact with air becomes larger than that in the case of a polyhedral shape such as a hexahedron or an octahedron.
Further, in the fragrance of the present invention, since the contact surface between the fragrances is small, there is a wider gap between the fragrances, and the fragrance in the fragrance is passed through this wider gap. Can be stripped.
And when the fragrance is hemispherical, the bloom strength of the aqueous gel immediately after use is 15 or more, and when the fragrance is sphere, it is 13 or more so that the fragrance overlaps vertically in the container. The hemisphere or sphere shape can be maintained. That is, it is possible to prevent the shape of the fragrance underneath from being collapsed due to the weight of the fragrance above, and an increase in the contact surface between the fragrances.
From the above, the fragrance of the present invention can keep a large surface area (volatilization area of the drug) at the time of use, and can form a wider space through which the fragrance can be volatilized, thereby reducing the volatilization rate of the fragrance, The fragrance can be used until the fragrance is no longer volatilized.

The fragrance of the present invention is a fragrance made of an aqueous gel containing gelatin, a crosslinking agent and a fragrance, and optionally containing other components such as a surfactant and a solubilizer. Hereinafter, each component of the present invention and its function will be further described.
In the present invention, “based on the total mass of the fragrance” means gelatin, a cross-linking agent, a fragrance, a surfactant, a solubilizer or a volatilizer, water and other components (deodorant, dye, bactericidal agent, preservative). It means to be based on the total mass of the fragrance comprising the form, release agent and the like.

<Gelatin>
As the gelatin contained in the fragrance of the present invention, for example, collagen contained in bones, skins, ligaments or tendons of animals such as cattle and pigs can be denatured by any method such as heat, acid, alkali or enzyme. Is used.
The amount of gelatin is preferably 1.0% by mass based on the total mass of the fragrance when considering the volatilization rate and the gel having the predetermined bloom strength described below, when the hemispherical fragrance is formed. As described above, more preferably 1.3% by mass or more, and in the case of producing a fragrance having a spherical shape, it is preferably 0.8% by mass or more, more preferably 1.3% by mass. The upper limit of the blending amount is not particularly limited as long as the object of the present invention is achieved, but in order to obtain a clear end point due to volume shrinkage, it is 5% by mass or less based on the total mass of the fragrance, preferably the same. 2 mass% or less is preferable.

<Crosslinking agent>
The cross-linking agent contained in the fragrance of the present invention is not particularly limited as long as it can cross-link by reacting with the functional group of the gelatin, but it is considered that the fragrance is mistakenly dropped or put into the mouth during use. However, those derived from nature are preferred. Examples of such a crosslinking agent include polysaccharides, guanearic acid, cellulose, lactic acid, boric acid, and the like, and it is desirable to use them in combination.
The blending amount of the crosslinking agent is preferably 0.1 to 10% by mass, more preferably the same based on the total mass of the fragrance, in consideration of the blending amount of gelatin in order to smoothly advance the crosslinking reaction with gelatin. The content is desirably 0.5 to 7.5% by mass.

<Fragrance>
As the fragrance contained in the fragrance of the present invention, any fragrance known in the art can be used, and examples thereof include natural fragrances and synthetic fragrances. Those which are diluted or emulsified as necessary can be used in the present invention.
Although there is no special restriction | limiting in the compounding quantity of the said fragrance | flavor, It is desirable that it is 1 to 10 mass% preferably based on the total mass of an aromatic.

<Surfactant>
The fragrance of the present invention can contain a surfactant for enhancing the dispersibility of the fragrance. Examples of these surfactants include anionic surfactants such as fatty acid salts, alkyl sulfate esters, alkylbenzene sulfonates, polyoxyethylene alkyl or alkylaryl sulfates; polyoxyethylene alkyl ethers or polyoxyethylene alkylphenyls. Polyoxyethylene alkyl aryl ethers such as ethers; nonionic surfactants such as sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sulfitol fatty acid esters, polyoxyethylene castor oil or polyoxyethylene hydrogenated castor oil 1 or more types can be used.
The amount of the surfactant is not particularly limited as long as the purpose of use thereof is achieved without adversely affecting the transparency of the fragrance of the present invention, but preferably based on the total mass of the fragrance. 1 to 15% by mass.

<Solubilizer or volatilization regulator>
The fragrance of the present invention can further contain a solubilizer that functions as a solubilizing aid for the fragrance or a volatilization regulator that controls the volatility of the fragrance. Such agents include alcohols such as methanol, ethanol or propanol; polyhydric alcohols such as ethylene glycol, propylene glycol or glycerin; polyhydric alcohol alkyls such as ethylene glycol alkyl ether, diethylene glycol alkyl ether or propylene glycol alkyl ether. One of water-soluble solvents such as ethers, or a combination thereof can be used.
The blending amount of the solubilizer or volatilization modifier is not particularly limited as long as the purpose of use thereof is achieved without adversely affecting the transparency of the fragrance of the present invention. It can be 0 to 40% by mass based on the total mass of the agent.

<Water>
Water is used in the form of a mixed solvent with the above-described solubilizing agent in the preparation of the fragrance of the present invention, for swelling of the gelatin or upon dissolution of the fragrance.
Although there is no special restriction on this water, it is preferable to have high purity in consideration of the quality of the fragrance and the storage stability of the fragrance. For example, purified water by distillation or ion exchange resin treatment can be mentioned as a preferable one. .
The amount of water is preferably 50 to 90% by mass based on the total mass of the fragrance.

<Other ingredients>
In addition to the above-described components, the fragrance of the present invention can contain well-known components that can be used in fragrances, such as deodorants, pigments, bactericides, shape-retaining agents, and release agents.

The fragrance of the present invention, for example, stirs and mixes all the above raw materials used at once, puts the obtained mixture into a hemisphere or a sphere mold, and maintains the conditions under which the crosslinking agent acts on gelatin. It can be manufactured by gelling and then releasing the mold.
In the fragrance of the present invention produced as described above, the blending amount of each component is appropriately adjusted so that the bloom strength of the aqueous gel is 15 or more when hemispherical, and 13 or more when spherical. To do. In view of the volatilization rate of the fragrance, hemisphere or sphere shape retention ability, volumetric shrinkage of gelatin, etc., the Bloom strength is most preferably 25 to 32 in any shape.
The size of the fragrance of the present invention (the diameter of a hemisphere or a sphere) is preferably 1 cm to 5 cm. When the diameter is larger than the above range, the surface area is not large, and when the diameter is smaller than the above range, water absorption of the aqueous gel becomes too fast, and the volatilization rate becomes extremely slow in about one week. .

  EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated in more detail, this invention is not limited to these Examples.

Production Example Gelatin, a crosslinking agent (polysaccharide, cellulose, boric acid), a fragrance, a surfactant, and a solubilizer were blended according to the blending amounts shown in Table 1 below, and the final mass was 100 g with purified water.
This blend was stirred at 320 rpm for 5 minutes to be thoroughly mixed, and in Examples 1 and 2 and Comparative Example 1, a 3 cm diameter spherical mold (multiple) was used, and in Comparative Example 2, a 6 cm rectangular parallelepiped. The mixture was poured into a mold and allowed to stand at room temperature for 24 hours to allow gelation to proceed. After the elapse of 24 hours, each gel was released from the mold, and in Example 2 and Comparative Example 1, the spherical shape was divided into two to form a hemispherical shape. The fragrance | flavor of Example 1 (sphere), Example 2 (hemisphere), Comparative example 1 (hemisphere), and Comparative example 2 (cuboid) was manufactured by the above procedure.
The bloom strength of each fragrance was measured according to JIS K6503-1996, and is shown together in Table 1.

Test Example 1: Shape retention Among the manufactured fragrances, sphere-shaped and hemispherical-shaped fragrances (Examples 1 and 2 and Comparative Example 1) were placed in a 6 cm square transparent container 1.
At this time, as shown in FIGS. 1 to 3, in Examples 1 (sphere) and Example 2 (hemisphere), the fragrances 2 a and 2 b were both kept intact without being crushed. In (hemisphere), it was visually confirmed that the fragrance 2c was crushed and did not form a hemisphere.

Test Example 2: Volatilization rate The produced fragrance was placed in a 6 cm square transparent container, placed in a room prepared at 25 ° C., and its mass change was weighed approximately every 5 days until after 60 days. The obtained results are shown in FIG.

Test results As shown in Test Example 1 above, the fragrances of Example 1 and Example 2 were used even when a plurality of spherical (or hemispherical) gel fragrances were placed in a container. The shape was maintained. Further, in Test Example 2, it was confirmed that the fragrances of Examples 1 and 2 did not decrease the volatilization rate even after 30 days, and the volatilization rate was maintained until almost 60 days.
On the other hand, in Comparative Example 1, which is a hemispherical fragrance having a bloom strength of 10, the shape was considerably crushed when it was put in a container, resulting in a lump with few voids. And in the comparative example 1 and the comparative example 2, it had the same volatilization rate as Example 1 and Example 2 until after 30-day progress, but after that, the volatilization rate fell suddenly and the fragrance | flavor almost volatilized. Not confirmed.

FIG. 1 is a schematic view of a state in which the spherical fragrance 2a of Example 1 is placed in a transparent container 1 as seen from the front of the container. FIG. 2 is a schematic view of the state in which the hemispherical fragrance 2b of Example 2 is placed in a transparent container 1 as seen from the front of the container. FIG. 3 is a schematic view of the state in which the hemispherical fragrance 2c of Comparative Example 1 is placed in a transparent container 1 as seen from the front of the container. FIG. 4 is a graph showing the change over time in the mass reduction rate of the fragrances of Examples 1 and 2 and Comparative Examples 1 and 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Transparent container 2 ... Air freshener 2a ... Spherical-shaped air freshener (Bloom strength 25)
2b ... hemispherical fragrance (bloom strength 25)
2c ... hemispherical fragrance (bloom strength 10)

Claims (2)

  A fragrance comprising an aqueous gel containing gelatin, a cross-linking agent and a fragrance, wherein the aqueous gel has a hemispherical shape or a spherical shape, and the bloom strength of the aqueous gel is a hemispherical shape, 15 or more. A fragrance characterized by being 13 or more in the case of shape. The fragrance according to claim 1, wherein the aqueous gel has a hemispherical shape or a spherical shape having a diameter of 1 cm to 5 cm.

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