Liquid composition and spray product

Abstract

To provide a liquid composition with enhanced solubility of an essential oil while preventing a quality of innate fragrance of the essential oil from deteriorating.SOLUTION: A liquid composition includes constituents (A) to (D): (A) essential oil; (B) polyoxyethylene hardened castor oil; (C) water; and (D) ethanol. A content of the constituent (A) is preferably 0.01 to 5.0 w / v%. A content of the constituent (B) is preferably 0.1 to 10.0 w / v%.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a liquid composition containing essential oil and a spray product.

Background Art

[0002] Conventionally, liquid compositions containing essential oil have been used as fragrances, deodorants, pest repellents, antibacterial agents, and the like. Essential oil is an extract obtained by extracting fragrance components from plants, also called essence, and is produced by performing extraction processes such as steaming or squeezing flowers, leaves, fruit peels, roots, etc., and further performing a purification process. The liquid composition containing essential oil is blended with water and made into an aqueous liquid composition in terms of being environmentally friendly.

[0003] While synthetic fragrances are generally composed of a single compound, essential oil is a natural product and is composed as a mixture containing a plurality of compounds. For this reason, the solubility of essential oil in a hydrophilic solvent containing water may decrease due to a part (component) of the plurality of compounds. In addition, if there are trace amounts of residues (non-volatile components) that could not be completely purified, the solubility of essential oil in the hydrophilic solvent may decrease due to such residues. For this reason, in order to increase the solubility of essential oil in a hydrophilic solvent, it has been proposed to remove insoluble components by distillation (see, for example, Cited Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, it is difficult to completely remove only the insoluble components by distillation, and as described in Patent Document 1, there is a possibility that some of the necessary fragrance components may be lost. In addition, an increase in the number of distillation steps also leads to an increase in cost.

[0006] On the other hand, in order to enhance the solubility of the essential oil in the liquid composition, it is conceivable to blend additives such as surfactants. However, depending on the type of additive, the solubility of the essential oil may not be enhanced, and even if it can be enhanced, there is a risk that the quality of the scent inherent in the essential oil may deteriorate.

[0007] The present invention has been made in view of the above circumstances, and an object thereof is to provide a liquid composition and a spray product in which the solubility of the essential oil is enhanced and the deterioration of the quality of the scent inherent in the essential oil is suppressed.

Means for Solving the Problems

[0008] When a mixed liquid of water and ethanol (hydrophilic solvent) is used as the solvent of the liquid composition and no additive is blended, the quality of the scent inherent in the essential oil is exhibited as it is, but the solubility of the essential oil is low and the scent is insufficient in quantity. Therefore, as a result of intensive studies by the present inventors, by blending polyoxyethylene hydrogenated castor oil, which is a surfactant among additives, the solubility of the essential oil can be enhanced compared to the case where no additive is blended and the case where other surfactants are blended. In addition, it has been found that the deterioration of the quality of the scent inherent in the essential oil can be suppressed compared to the case where other surfactants are blended, and the present invention has been completed.

[0009] The characteristic configuration of the liquid composition according to the present invention for solving the above problems is the following components (A) to (D): (A) Essential oil (B) Polyoxyethylene hydrogenated castor oil (C) Water (D) Ethanol and containing them.

[0010] According to the liquid composition of this configuration, when using hydrophilic solvents such as component (C) and component (D) as solvents, by blending component (B), compared with the case where no additives are blended and the case where other surfactants are blended, the solubility of component (A) in components (C) and (D) is increased, and moreover, the decrease in the quality of the fragrance inherent in component (A) is suppressed.

[0011] In the liquid composition of the present invention, The content of the component (A) is preferably 0.01 to 5.0 w / v%.

[0012] According to the liquid composition of this configuration, by setting the content of component (A) within the above appropriate range, the fragrance of component (A) is moderately enhanced. Also, the stickiness derived from component (A) is suppressed.

[0013] In the liquid composition of the present invention, The content of the component (B) is preferably 0.1 to 10.0 w / v%.

[0014] According to the liquid composition of this configuration, by setting the content of component (B) within the above appropriate range, the solubility of component (A) in components (C) and (D) is further increased, and moreover, the decrease in the quality of the fragrance inherent in component (A) is further suppressed. Also, the stickiness derived from component (B) is suppressed.

[0015] In the liquid composition of the present invention, The component (A) preferably contains one or more selected from the group consisting of peppermint oil, eucalyptus oil, lavender oil, wormwood oil, spearmint oil, orange oil, grapefruit oil, and bergamot oil.

[0016] Camphor oil, eucalyptus oil, lavender oil, wormwood oil, spearmint oil, orange oil, grapefruit oil, and bergamot oil have relatively high cooling properties and pest repellent effects among essential oils. Therefore, according to the liquid composition of this configuration, by selecting these essential oils as component (A), it will be excellent in terms of cooling properties and pest repellent effects.

[0017] In the liquid composition of the present invention, The average number of repeating units of the oxyethylene group in the component (B) is preferably 10 to 100.

[0018] According to the liquid composition of this configuration, by setting the average number of repeating units of the oxyethylene group in component (B) within the above appropriate range, the balance of hydrophilicity and lipophilicity (HLB value) in component (B) becomes more appropriate. As a result, the solubility of component (A) in components (C) and (D) is further increased, and moreover, the decrease in the quality of the fragrance inherent in component (A) is further suppressed.

[0019] In the liquid composition of the present invention, The following component (E): (E) Pest control component It is preferably further contained.

[0020] According to the liquid composition of this configuration, by further containing component (E), in addition to the pest repellent effect derived from component (A), the pest control effect derived from component (E) can be exerted, so that the pest control effect is further enhanced.

[0021] In the liquid composition of the present invention, The component (E) preferably contains one or more selected from the group consisting of deet, ikaridin, ethyl 3-(N-n-butyl-N-acetyl)aminopropionate, and p-menthane-3,8-diol.

[0022] According to the liquid composition of this configuration, by selecting these appropriate pest control components as component (E), the pest control effect is further enhanced.

[0023] Another characteristic configuration of the spray product according to the present invention for solving the above problems is that the liquid composition is contained in a spray container.

[0024] According to the spray product of this configuration, an appropriate amount of the liquid composition can be applied to the object according to the number of operations of the button or lever, so that the above effects of the liquid composition can be easily exerted.

Mode for Carrying Out the Invention

[0025] Hereinafter, the liquid composition and the spray product of the present invention will be described. However, the present invention is not intended to be limited to the configurations described in the embodiments described below.

[0026] [Liquid Composition] The liquid composition of this embodiment contains the following components (A) to (D): (A) Essential oil (B) Polyoxyethylene hydrogenated castor oil (C) Water (D) Ethanol and contains.

[0027] Although the use of the liquid composition is not particularly limited, for example, depending on the type of component (A) and the like, it is preferably used as an aromatic composition, a deodorant composition, a pest control composition, an antibacterial composition, or the like.

[0028] <(A) Essential oil> The essential oil as component (A) is for imparting fragrance to the liquid composition, but also has a repellent effect that does not attract pests. Component (A) is extracted from natural products and purified. Component (A) is not particularly limited, and examples include peppermint oil, lavender oil, rose oil, geranium oil, eucalyptus oil, lemon oil, lemongrass oil, ylang-ylang oil, spearmint oil, rosemary oil, bergamot oil, citronella oil, orange oil, lavandin oil, patchouli oil, cypress oil, jasmine oil, petitgrain oil, lemon eucalyptus oil, grapefruit oil, lime oil, verbena oil, pine oil, chamomile oil, clove oil, cinnamon oil, turpentine oil, and other essential oils. Among these, peppermint oil, eucalyptus oil, lavender oil, verbena oil, spearmint oil, orange oil, grapefruit oil, and bergamot oil are preferred. Note that peppermint oil, eucalyptus oil, lavender oil, verbena oil, spearmint oil, orange oil, grapefruit oil, and bergamot oil have relatively high coolness and pest repellent effects among essential oils. Therefore, by selecting these essential oils as component (A), the liquid composition will be excellent in terms of coolness and pest repellent effect. Component (A) may be directly blended into the liquid composition, or a microencapsulated one or a complex encapsulated with cyclodextrin or the like may be blended. Component (A) can be used alone of the above essential oils, or can also be used as a mixture of two or more kinds.

[0029] The content of component (A) in the liquid composition is not particularly limited, but 0.01 to 5.0 w / v% is preferred, 0.05 to 4.0 w / v% is more preferred, and 0.1 to 3.0 w / v% is even more preferred. By setting the content of component (A) within the above appropriate range, the fragrance of component (A) will be moderately enhanced. Also, the stickiness derived from component (A) will be suppressed.

[0030] <(B) Polyoxyethylene hydrogenated castor oil> Component (B), polyoxyethylene hydrogenated castor oil (hereinafter, "polyoxyethylene" is also referred to as "POE"), is obtained by subjecting hydrogenated castor oil to addition polymerization with ethylene oxide (ethylene oxide). Component (B) is a nonionic surfactant and has the function of enhancing the solubility of component (A) in components (C) and (D) and maintaining (suppressing a decrease in) the quality of the fragrance of component (A). In addition, component (B) has the function of reducing the irritation derived from component (D) even when component (D) is blended at a relatively high concentration. Further, when the liquid composition is used as a spray product, it has the function of reducing the inhalation irritation derived from component (E) (particularly icariin, etc.) and component (D) described later. Furthermore, it has the function of reducing the change in fragrance over time derived from the essential oil (A) (particularly lavender oil, etc.). These functions of component (B) are new findings discovered through the intensive research of the present inventors.

[0031] The average number of repeating units of the oxyethylene group (-CH2-CH2-O-) in component (B) (the average number of moles of ethylene oxide added, hereinafter, also referred to as "E.O.") is preferably 10 to 100, more preferably 20 to 100, and even more preferably 30 to 80. By setting the average number of repeating units of the oxyethylene group in component (B) within the above appropriate range, the balance between hydrophilicity and lipophilicity (HLB value) in component (B) becomes more appropriate. As a result, the solubility of component (A) in components (C) and (D) is further enhanced, and moreover, the decrease in the quality of the fragrance inherent in component (A) is further suppressed.

[0032] Component (B) is not particularly limited, and examples thereof include POE hydrogenated castor oil (10 E.O.), POE hydrogenated castor oil (20 E.O.), POE hydrogenated castor oil (40 E.O.), POE hydrogenated castor oil (50 E.O.), POE hydrogenated castor oil (60 E.O.), POE hydrogenated castor oil (80 E.O.), POE hydrogenated castor oil (100 E.O.), and the like. The numerical value attached before the notation "E.O." indicates the average number of repeating units of the oxyethylene group. Also, the notation "E.O" may be omitted, and even in that case, the attached numerical value indicates the average number of repeating units of the oxyethylene group. Component (B) can be used alone or as a mixture of two or more kinds.

[0033] The content of component (B) in the liquid composition is not particularly limited, but is preferably 0.1 to 10.0 w / v%, more preferably 0.3 to 8.0 w / v%, and even more preferably 0.5 to 3.0 w / v%. When the content of component (B) is less than the above lower limit, the solubility of component (A) in components (C) and (D) becomes insufficient, and there is a possibility that the quality deterioration of the fragrance originally possessed by component (A) cannot be sufficiently suppressed. When the content of component (B) exceeds the above upper limit, the fragrance of component (B) becomes relatively strong, the quality of the fragrance originally possessed by component (A) deteriorates, and the fragrance may become unpleasant as a whole. Also, there is a possibility of stickiness derived from component (B). On the other hand, by setting the content of component (B) within the above appropriate range, the solubility of component (A) in components (C) and (D) is further enhanced, and moreover, the deterioration of the quality of the fragrance originally possessed by component (A) is more suppressed. Also, the stickiness derived from component (B) is suppressed.

[0034] <(C) Water> Water as component (C) is a solvent for making the formulation of the liquid composition an aqueous formulation. Component (C) is not particularly limited, and examples thereof include purified water such as ion-exchanged water and reverse osmosis membrane water, as well as tap water, industrial water, deep ocean water, and the like.

[0035] The content of component (C) in the liquid composition is not particularly limited, but is preferably 0.5 w / v% or more, more preferably 5.0 w / v% or more, still more preferably 10.0 w / v% or more, and particularly preferably 20.0 w / v% or more. The content of component (C) is preferably 65.0 w / v% or less, more preferably 55.0 w / v% or less, and still more preferably 45.0 w / v% or less. By setting the content of component (C) to be not less than the above lower limit, the content of components other than component (C) becomes relatively small, so that the irritation and adverse environmental effects derived from these components can be suppressed. By setting the content of component (C) to be not more than the above upper limit, the content of components other than component (C) becomes relatively large, so that the functions derived from these components can be more effectively exerted.

[0036] <(D) Ethanol> (D) Ethanol, which is a component, is a solvent (organic solvent) for facilitating the dissolution of component (A). Component (D) can also impart a cooling sensation, a bactericidal action, etc. to the liquid composition. Ethanol is not particularly limited, but for example, absolute ethanol, 95% ethanol (an aqueous ethanol solution containing ethanol and water in a ratio of 95:5 (volume ratio)) is preferred. When blending component (D) into the liquid composition, it may be prepared as a mixture of component (D) and various commercially available denatured ethanols prepared as mixtures with vitreous, citrus, etc. In this case, additives such as vitreous and citrus correspond to other components described later.

[0037] The content of component (D) in the liquid composition is not particularly limited, but is preferably 10.0 w / v% or more, more preferably 20.0 w / v% or more, and even more preferably 30.0 w / v% or more. The content of component (D) is preferably 80.0 w / v% or less, more preferably 70.0 w / v% or less, even more preferably 60.0 w / v% or less, and particularly preferably 55.0 w / v% or less. By setting the content of component (D) to be not less than the above lower limit, the solubility of component (A) in components (B) and (C) can be further increased, and the cooling sensation, bactericidal action, etc. can be further enhanced. By setting the content of component (D) to be not more than the above upper limit, the irritation derived from component (D) can be reduced.

[0038] <(E) Pest control component> The liquid composition may also contain a pest control component as component (E). Here, "control" includes the meaning of "repelling" that does not attract pests, as well as the meaning of "insecticidal" that kills or knocks down pests. Component (E) is a synthetic compound. By including component (E), in addition to the pest repellent action derived from component (A), the pest control action derived from component (E) can be exerted, so that the pest control effect is further enhanced.

[0039] Component (E) is not particularly limited, and examples include DEET, Icaridin, ethyl 3-(N-n-butyl-N-acetyl)aminopropionate (EBAAP, IR3535), p-menthane-3,8-diol (PMD), phenothrin, dibutyl phthalate, 2-ethyl-1,3-hexanediol, p-dichlorobenzene, di-n-butyl succinate, diethylamide caprate, n-propylacetanilide, etc. Among these, DEET, Icaridin, ethyl 3-(N-n-butyl-N-acetyl)aminopropionate, and p-menthane-3,8-diol are preferred, and DEET and Icaridin are more preferred. By selecting these appropriate compounds as component (E), the pest control effect is further enhanced. Component (E) can be used alone or as a mixture of two or more.

[0040] Although the content of component (E) in the liquid composition is not particularly limited, it is preferably 3.0 w / v% or more, more preferably 4.0 w / v% or more, and even more preferably 5.0 w / v% or more. The content of component (E) is preferably 40.0 w / v% or less, more preferably 35.0 w / v% or less, and even more preferably 30.0 w / v% or less. By setting the content of component (E) to be equal to or higher than the above lower limit, the pest control effect can be enhanced more effectively. By setting the content of component (E) to be equal to or lower than the above upper limit, the irritation derived from component (E) can be reduced more effectively. In addition, since the fragrance derived from component (E) can be reduced, the deterioration of the quality of the fragrance originally possessed by component (A) can be suppressed more effectively.

[0041] <Other components> The liquid composition may also contain other components other than those described above. The other components are not particularly limited, and examples thereof include organic solvents other than component (D), pH adjusters, surfactants other than component (B), and the like.

[0042] The organic solvents other than component (D) are not particularly limited, and examples thereof include ketone solvents such as acetone, methyl ethyl ketone, diethyl ketone, and cyclohexanone; alcohol solvents such as methanol, butanol, 1-propanol, 2-propanol, and 1-butanol; glycol solvents such as ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, 1,3-butylene glycol, and dipropylene glycol; glycol ether solvents such as diethylene glycol monomethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, and phenoxyethanol; hydrocarbon solvents such as toluene, xylene, normal hexane, n-paraffin, and isoparaffin; and ester solvents such as ethyl acetate, butyl acetate, amyl acetate, and ethyl lactate.

[0043] The pH adjuster is not particularly limited, and examples thereof include citric acid, sodium citrate, sodium hydrogen carbonate, triethanolamine, ammonia, potassium hydroxide, sodium hydroxide, and the like.

[0044] The surfactant other than component (B) is not particularly limited, but in consideration of good compatibility with component (B) which is a nonionic surfactant, it is preferably the same nonionic surfactant. The nonionic surfactant is not particularly limited, and examples thereof include polyoxyethylene alkyl ether (POE alkyl ether), polyoxyethylene alkyl phenyl ether (POE alkyl phenyl ether), polyoxyethylene higher fatty acid ester (POE higher fatty acid ester), polyoxyethylene sorbitan fatty acid ester (POE sorbitan fatty acid ester), polyoxyethylene glycerin fatty acid ester (POE glycerin fatty acid ester), coconut oil fatty acid diethanolamide, polyoxyethylene polyoxypropylene alkyl ether (POE polyoxypropylene alkyl ether), fatty acid alkanolamide, alkylamine oxide, and the like.

[0045] <Preparation of Liquid Composition> The liquid composition can be prepared by mixing components (A) to (D), optionally component (E), and optionally other components.

[0046] <Application Form> The liquid composition can be used in its original state (liquid), but for example, it is preferably stored in a pump-type or trigger-type spray container and used as a spray product. Further, a propellant such as a liquefied gas or a compressed gas can be added to the liquid composition and filled in an aerosol container to be used as an aerosol product. When it is a product to be applied to the human body or clothing, it is preferably a spray product from the viewpoint of usability.

[0047] <Spray Product> The spray product of this embodiment is formed by containing the above liquid composition in a spray container. According to the spray product, an appropriate amount of the liquid composition can be applied to an object according to the number of operations of a button or a lever, so that the above effects of the liquid composition can be easily exerted. As the spray container, a conventionally known one can be used. The spray product may be directly sprayed onto the human body, clothes, etc. as the application target, or indirectly sprayed. Examples of indirect spraying include spraying onto the hand once and then applying it to other parts of the human body, clothes, etc. as the application target.

[0048] The discharge amount of the content (liquid composition) in the spray product is not particularly limited, but is preferably 0.01 to 3.0 mL, more preferably 0.03 to 2.5 mL, and even more preferably 0.05 to 2.0 mL per operation. By setting the discharge amount within the above appropriate range, an appropriate amount of the liquid composition can be applied to the object.

Example

[0049] Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to the Examples.

[0050] [Production Example] (Example 1) According to the formulation shown in Table 1, 0.9 g (0.9 w / v%) of lavender oil as component (A), 1.0 g (1.0 w / v%) of POE hydrogenated castor oil (60) as component (B), and 35 g (35 w / v%) of water as component (C) were added to a 100 mL volumetric flask, and further, absolute ethanol (about 50.5 w / v%) as component (D) was made up to the total volume of 100 mL as the balance to prepare the liquid composition of Example 1.

[0051] (Examples 2 to 30, Comparative Examples 1 to 17) According to the formulations shown in Tables 1 to 8, the liquid compositions of Examples 2 to 30 and Comparative Examples 1 to 17 were prepared in the same manner as in Example 1.

[0052] In Tables 1 to 3 and 6 to 8, the details of the POE-cured castor oil used as component (B) are as follows. In Table 8, component (B) is described but not formulated in Comparative Examples 13 to 17. · POE-cured castor oil (40) NIKKOL HCO-40 (manufactured by Nikko Chemicals Co., Ltd.) · POE-cured castor oil (50) NIKKOL HCO-50 (manufactured by Nikko Chemicals Co., Ltd.) · POE-cured castor oil (60) NIKKOL HCO-60 (manufactured by Nikko Chemicals Co., Ltd.) · POE-cured castor oil (80) NIKKOL HCO-80 (manufactured by Nikko Chemicals Co., Ltd.) · POE-cured castor oil (100) NIKKOL HCO-100 (manufactured by Nikko Chemicals Co., Ltd.)

[0053] In Tables 4 to 5, the details of the surfactants used as other surfactants, component (B´), are as follows. · Cocamidopropylamine oxide 30% solution (MINOX CA, manufactured by Miwon Commercial Co., Ltd.), nonionic surfactant · Lauryl dimethylamine oxide 33% solution (CADENAX DM12D-W(C), manufactured by Lion Corporation), nonionic surfactant · Polyoxyethylene isodecyl ether (Neugen SD-30, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), nonionic surfactant · Polyoxyethylene isodecyl ether (Neugen SD-60, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), nonionic surfactant · Polyoxyethylene isodecyl ether (Neugen SD-110, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), nonionic surfactant · Sodium alkane sulfonate 29% solution (Hostapur SAS 30 SB, manufactured by Clariant Japan K.K.), anionic surfactant ·40% aqueous sodium α-olefin sulfonate (Hostapur OS, manufactured by Clariant Japan K.K.), anionic surfactant

[0054] In Tables 1 to 8, the content of component (D) shown as the residue was appropriately set within the range of 20.0 to 80.0 w / v% during makeup.

[0055] [Solubility confirmation test] After leaving the liquid composition of Example 1 standing at room temperature for 2 weeks or more, the presence or absence of insolubles was observed visually, and the solubility of component (A) in the liquid composition was evaluated according to the following evaluation criteria (solubility confirmation test). The solubility confirmation test was also carried out in the same manner for the liquid compositions of Examples 2 to 30 and Comparative Examples 1 to 17. The evaluation results are shown in Tables 1 to 8. [Evaluation criteria] Good: No insolubles are observed and it is clear. Poor: Insolubles are observed and it is not clear.

[0056] [Fragrance quality confirmation test] Five pre-trained professional researchers conducted the following confirmation tests. When component (A) is lavender oil, a liquid composition of Comparative Example 1 containing only components (A) and (C) and no other components was applied to the left arm, allowed to dry thoroughly, then smelled and its quality was confirmed, which was taken as the reference fragrance quality. The liquid composition of Example 1 was applied to the right arm, allowed to dry thoroughly, then smelled and its quality was confirmed, and compared with the fragrance quality of Comparative Example 1 (reference fragrance quality), and evaluated according to the following evaluation criteria by the comprehensive judgment of the five researchers (confirmation test of fragrance quality). The same was done for the liquid compositions of Examples 2 to 21 and Comparative Examples 2 to 12 to conduct the confirmation test of fragrance quality. When component (A) is perilla oil, spearmint oil, orange oil, grapefruit oil, or eucalyptus oil, in the same way as when component (A) is lavender oil, liquid compositions of Comparative Examples 13 to 17 containing only components (A) and (C) and no other components were used as the reference fragrance quality respectively, and the fragrance quality of Examples 22 to 30 was compared with the fragrance quality of Comparative Examples 13 to 17 having the same component (A) (each reference fragrance quality) respectively to conduct the confirmation test of fragrance quality. Specifically, the fragrance quality of Examples 22 to 23 was compared with the fragrance quality of Comparative Example 13, the fragrance quality of Examples 24 to 25 was compared with the fragrance quality of Comparative Example 14, the fragrance quality of Examples 26 to 27 was compared with the fragrance quality of Comparative Example 15, the fragrance quality of Examples 28 to 29 was compared with the fragrance quality of Comparative Example 16, and the fragrance quality of Example 30 was compared with the fragrance quality of Comparative Example 17. Note that the confirmation of the fragrance quality does not mainly focus on the confirmation of the strength of the fragrance, but on whether there is a change in the original fragrance tone of the essential oil and whether it has mutated into a heterogeneous fragrance. This confirmation can also be said to be to confirm the fragrance preference, and further, to confirm the desirability of the fragrance. The evaluation results are shown in Tables 1 to 8. (Evaluation Criteria) Excellent: The fragrance quality is equivalent to the reference fragrance quality (Comparative Examples 1, 13 to 17). Good: The fragrance quality is slightly lower compared to the reference fragrance quality (Comparative Examples 1, 13 to 17). Poor: The fragrance quality is significantly lower compared to the reference fragrance quality (Comparative Examples 1, 13 to 17).

[0057]

Table 1

[0058]

Table 2

[0059]

Table 3

[0060]

Table 4

[0061]

Table 5

[0062]

Table 6

[0063]

Table 7

[0064]

Table 8

[0065] In Examples 1 to 30, a clear liquid was easily obtained without using any special mixing method. Regarding the quality of the fragrance, except for Examples 14 and 21, it was equivalent to the reference fragrance quality (Comparative Examples 1 and 13 to 17), and no decrease in the fragrance quality was observed. In Example 14, although the quality of the fragrance slightly decreased due to the peculiar odor derived from the diet blended as the (E) component, it was within an acceptable range. In Example 21, although the cause was not clear, the fragrance of component (B) tended to be slightly emphasized, and therefore, although the quality of the fragrance derived from component (A) slightly decreased, it was within an acceptable range. In Examples 1 to 30, stickiness was not observed. The liquid composition of the present invention claims to have the effect of enhancing the solubility of essential oils in water and ethanol by blending polyoxyethylene hydrogenated castor oil into the liquid composition, and does not enhance the characteristics of the essential oils themselves. Therefore, for the same liquid composition, it is not limited to the case where lavender oil, wormwood oil, spearmint oil, orange oil, grapefruit oil, or eucalyptus oil is used as component (A), and it is presumed that the same solubility improvement effect as in this example can be achieved when other essential oils are used, including peppermint oil and bergamot oil, and the decrease in the quality of the fragrance inherent in the essential oils can be suppressed.

[0066] On the other hand, in Comparative Examples 1 to 10 and 12 to 17, a clear liquid could not be obtained even after stirring for a long time after mixing. In Comparative Examples 7 to 10, the quality of the fragrance of component (A) was significantly decreased and was unacceptable. In Comparative Example 11, although a clear liquid was obtained, the quality of the fragrance of component (A) was significantly decreased due to the unpleasant odor derived from the surfactant and was unacceptable.

Industrial Applicability

[0067] The liquid composition and spray product of the present invention have enhanced solubility of essential oils and suppressed decrease in the quality of the fragrance inherent in the essential oils, and thus can be used for a wide range of applications such as fragrances, deodorants, pest control agents, and antibacterial agents.

Claims

1. The following components (A) to (D): (A) Essential oil (B) Polyoxyethylene hydrogenated castor oil (C) Water (D) Ethanol A liquid composition containing the same.

2. The liquid composition according to Claim 1, wherein the content of the component (A) is 0.01 to 5.0 w / v%.

3. The liquid composition according to Claim 1, wherein the content of the component (B) is 0.1 to 10.0 w / v%.

4. The liquid composition according to Claim 1, wherein the component (A) contains one or more selected from the group consisting of peppermint oil, eucalyptus oil, lavender oil, perilla oil, spearmint oil, orange oil, grapefruit oil, and bergamot oil.

5. The liquid composition according to Claim 1, wherein the average number of repeating units of the oxyethylene group in the component (B) is 10 to 100.

6. The following component (E): (E) Pest control component The liquid composition according to Claim 1, further containing the same.

7. The liquid composition according to Claim 6, wherein the component (E) contains one or more selected from the group consisting of deet, icarisidin, ethyl 3-(N-n-butyl-N-acetyl)aminopropionate, and p-menthane-3,8-diol.

8. A spray product in which the liquid composition according to any one of Claims 1 to 7 is contained in a spray container.

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