JP2009261929A - Transparent aromatic liquid with reduced surfactant blending amount - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide aromatic liquid which is reduced in the surfactant blending amount, and of which a reducing speed is stably kept even in a later period of use, and which is transparent and has good appearance and characteristics. <P>SOLUTION: For the aromatic liquid, a ratio of 0.4-1 pt.wt. of a surfactant based on 1 pt.wt. of the aromatic is satisfied to prepare the transparent aromatic liquid. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fragrant liquid that has a reduced amount of surfactant and is transparent and has a good appearance. The present invention also relates to a method for producing the aromatic liquid.

  In order to eliminate the discomfort due to the odor of the indoor space and the storage space and to create a comfortable space, a fragrance containing a fragrance is widely used (for example, see Patent Document 1). In the fragrance, a fragrance liquid in which a fragrance is dispersed in an aqueous solvent such as water is usually used in order to adjust the quality and strength of the odor to be volatilized. Since the fragrance | flavor used for such an aromatic liquid shows lipophilicity, the mixing | blending of surfactant is unavoidable conventionally for manufacture of an aromatic liquid.

  However, since the surfactant does not volatilize at room temperature, the concentration of the surfactant in the fragrance increases with the passage of time in the fragrance containing the surfactant. There is a drawback of remaining. Such residual surfactant after use may deteriorate the appearance and give the user an unpleasant impression. Furthermore, since the increase in the concentration of the surfactant with the passage of time of use delays the rate of weight loss of the fragrance, there is a concern that it may adversely affect the volatility of the fragrance. In particular, when the aroma liquid is volatilized using a wicking volatilization member for sucking up the aroma liquid contained in the container and volatilizing the aroma liquid outside the container, the concentration of the surfactant in the later stage of use The increase in the temperature causes clogging in the wicking volatilization member, and consequently prevents volatilization of the fragrance.

  Therefore, if it is possible to reduce the blending amount of the surfactant in the fragrance liquid, the above-mentioned drawbacks in the conventional fragrance liquid can be solved, and furthermore, the production cost of the fragrance liquid can be reduced. However, if the amount of the surfactant is simply reduced in the fragrance liquid, the fragrance cannot be sufficiently dispersed in the aqueous solvent, causing the fragrance liquid to become cloudy and impairing the appearance properties. Therefore, the present situation is that the aromatic liquid which reduces the blending amount of the surfactant and has good appearance properties has not been developed yet.

JP 2007-105447 A

  An object of the present invention is to provide a fragrant liquid that is reduced in the blending amount of the surfactant, maintains a stable reduction rate of the fragrance liquid even in the later stage of use, and is transparent and has good appearance properties.

  The present inventors have intensively studied to solve the above problems, and in the aromatic liquid, the ratio of 0.4 to 1 part by weight of the surfactant per 1 part of the fragrance is satisfied, and is adjusted to a transparent aromatic liquid. As a result, it was found that the blending amount of the surfactant can be reduced, and the weight loss rate of the aromatic liquid can be kept stable even in the later stage of use, and a transparent aromatic liquid with good appearance properties can be provided. The present invention has been completed by further studies based on this finding.

That is, this invention provides the aromatic liquid and its manufacturing method which are hung up below.
Item 1. An aromatic liquid containing a fragrance and a surfactant, wherein the fragrance contains a surfactant in a ratio of 0.4 to 1 part by weight per fragrance and is transparent.
Item 2. Item 2. The fragrance liquid according to Item 1, which is in the form of a nanoemulsion.
Item 3. Item 1 or 2 is prepared by ultrasonic treatment and / or high-pressure emulsification treatment of an aqueous solvent containing a fragrance and a surfactant in a ratio of 0.4 to 1 part by weight of the surfactant per 1 fragrance. The aromatic liquid described.
Item 4. The aromatic liquid according to Item 1, which is produced through the following first and second steps:
The surfactant satisfies the ratio of 0.4 to 1 part by weight per fragrance, and the ratio that the aqueous solvent is 100 to 600 parts by weight per 100 parts by weight of the total amount of the fragrance and the surfactant is satisfied. The first step of preparing a fragrance concentrate by mixing the fragrance, the surfactant, and the aqueous solvent, and the fragrance concentrate by further mixing the aqueous solvent with the fragrance concentrate obtained in the first step. A second step of preparing
Item 5. Item 5. The fragrance liquid according to item 4, produced by subjecting the fragrance liquid obtained in the second step to a nanoemulsion treatment.
Item 6. Item 6. The aromatic liquid according to Item 4 or 5, wherein the aqueous solvent is water.
Item 7. Item 7. The fragrance according to any one of Items 1 to 6, wherein the surfactant concentration is 0.4 to 3% by weight.
Item 8. Item 8. The aromatic liquid according to any one of Items 1 to 7, wherein the surfactant is a nonionic surfactant.
Item 9. Item 10. The aromatic liquid according to any one of Items 1 to 8, wherein the aromatic liquid according to any one of Items 1 to 8 is accommodated in a container provided with a suction volatilization member for sucking up the stored aromatic liquid and volatilizing it outside the container. A fragrance.
Item 11. Item 10. A gel-like fragrance, wherein the water-absorbent resin contains the fragrance liquid according to any one of Items 1 to 8.
Item 12. A method for producing an aromatic liquid, comprising subjecting an aqueous solvent containing a perfume and a surfactant in a ratio of 0.4 to 1 part by weight of the perfume to an ultrasonic treatment and / or high-pressure emulsification treatment.
Item 13. The manufacturing method of an aromatic liquid containing the following 1st and 2 processes.
The surfactant satisfies the ratio of 0.4 to 1 part by weight per fragrance, and the ratio that the aqueous solvent is 100 to 600 parts by weight per 100 parts by weight of the total amount of the fragrance and the surfactant is satisfied. The first step of preparing a fragrance concentrate by mixing the fragrance, the surfactant, and the aqueous solvent, and the fragrance concentrate by further mixing the aqueous solvent with the fragrance concentrate obtained in the first step. A second step of preparing
Item 14. Item 14. The production method according to Item 13, wherein the aqueous solvent is water.

  The fragrance liquid of the present invention can stably maintain the rate of weight loss of the fragrance liquid even in the later period of use, and can release a homogeneous fragrance from the first period to the latter period of use. Moreover, since the compounding quantity of surfactant is reduced and the quantity of the residue after use is reduced, the aromatic liquid of this invention can also raise a user's satisfaction. Furthermore, since the blending amount of the surfactant is reduced, the fragrance liquid of the present invention has a manufacturing advantage that raw material costs can be reduced.

  Moreover, since the fragrance liquid of the present invention is transparent and has a good appearance, it can give satisfaction to the consumer from a design viewpoint.

  Furthermore, when the fragrance liquid of the present invention is contained in a container equipped with a wicking volatilization member and used as a liquid fragrance, the surfactant in the wicking volatilization member is a cause even in the later stage of use. Since clogging that occurs is difficult to occur, the rate of weight loss of the fragrance does not decrease. Therefore, in order to increase the volatility of the aromatic liquid remaining in the container in the later stage of use, it is not necessary to increase the aromatic liquid impregnated in the wicking volatilization member by shaking the container. Can be used without.

It is a figure which shows the result of having measured the diffraction / scattered light intensity | strength about aromatic liquid (Example 2 and Comparative Example 3-4). It is a figure which shows the result of having measured the weight loss rate of the aromatic liquid (Example 2 and Comparative Example 4). It is the photograph which image | photographed the remaining aromatic liquid 32 days after the start of volatilization of aromatic liquid (Example 2 and Comparative Example 4), and 47 days after. It is a figure which shows the parameter | index of the criterion used when evaluating the external appearance property of an aromatic liquid in Example II. It is a figure which shows the result of having measured the diffraction / scattered light intensity | strength about aromatic liquid (Example 8-10). It is a figure which shows the result of having measured the diffraction / scattered light intensity | strength about the aromatic liquid (Example 11 and Comparative Example 7).

  The aromatic liquid of the present invention is characterized in that it contains a fragrance and a surfactant in a ratio of 0.4 to 1 part by weight of the surfactant per 1 fragrance and is transparent.

  About the fragrance | flavor mix | blended with the aromatic liquid of this invention, any of a natural fragrance | flavor, the isolated fragrance | flavor isolate | separated from the natural fragrance | flavor, and a synthetic | combination fragrance | flavor may be sufficient, The well-known oil-based fragrance | flavor used for the conventional aromatic liquid is used. Including can be used. Specific examples of the fragrances include aldehydes having 6 to 12 carbon atoms, anisaldehyde, acetal R, acetophenone, acetyl cedrene, adoxal, allyl amyl glycolate, allyl cyclohexane propionate, alpha damascon, ambrett lid, ambro Xanthine, amylcinnamic aldehyde, amylcinnamic aldehyde dimethyl acetal, amyl valericate, amyl salicylate, isoamyl acetate, acetyl eugenol, isoamyl salicylate, indole, α ionone, β ionone, α methyl ionone, β methyl ionone, γ methyl ionone, indene, Ethyl vanillin, uranium thiol, oak moss No. 1, olibon, oxyphenylone, caryophyllene, cashmerelan, carvone, galaxoli , Caron, coumarin, paracresyl methyl ether, geraniol, geranyl acetate, geranyl formate, geranyl nitrile, tetrahydrogeraniol, tetrahydrogeranyol acetate, coabon, sandaroa, sandera, santa rex, santalinol, methyl salicylate, cinnamic alcohol, Cinnamic aldehyde, cis jasmon, citral, citral dimethyl acetal, citrasar, citronellal, citronellol, citronellyl acetate, citronellyl formate, citronellyl nitrile, cyclaset, cyclamenaldehyde, cyclaprop, cinnamyl acetate, dihydrojasmon, dimethol, Isocyclocitral, Jasmar, Jasmolactone, Jasmofi Orchid, Stylal Acetate, Stylal Propionate, Cedro Amber, Cedryl Acetate, Cedrol, Celestrido, β Damascon, α Turpineol, γ Turpineol, Turpinyl Acetate, Thymol, Delta Damascon, Delta C6-C13 Lactone, tonalid, traseolide, tripral, isononyl acetate, nerol, neryl acetate, neobergamate, nopelacetate, nopele alcohol, bacdanol, hyacinth dimethyl acetal, hydrotropic alcohol, hydroxycitronellal, alpha pinene, butyl butyrate Rate, para tertiary butyl cyclohexanol, para tertiary butyl cyclohexyl acetate, ortho tertiary butyl cyclohexanol, diphe Roxide, fluitate, fenthyl alcohol, phenylethylphenyl acetate, isobutylquinoline, phenylethyl alcohol, phenylethyl acetate, phenylacetoaldehyde dimethyl acetal, benzyl acetate, benzyl alcohol, benzyl salicylate, bergamyl acetate, benzaldehyde, benzyl formate, Dimethylbenzylcarbinol, hedion, helional, heliotropin, cis-3-hexenol, cis-3-hexenyl acetate, cis-3-hexenyl salicylate, hexylcinnamic aldehyde, hexyl salicylate, pentalide, bellox, ortho Bornyl acetate, isobornyl acetate, isoborneol, endo-borneol , Manzanate, mayol, mugealdehyde, miracaldehyde, dihydromyrsenol, dimyrcetol, mugor, musk TM-II, musk 781, musk C14, musk T, musk ketone, musk civetine, musk mosken, mensanil acetate, mensonate, methylanthrani RATE, Methyl Yugenol, Menthol, Methyl Phenyl Acetate, Yugenol, Iso Yugenol, Methyl Iso Yugenol, γC 6-13 Lactone, Lime Oxide, Methyl Lavender Ketone, Dihydrolinalol, Ligstral, Lilyal, Limonene, Linalol, Linalool Oxide, Tetrahydrolinalool, Tetrahydrolinalyl acetate, linalyl acetate, rilal, rubafuran, rosephenone, rose oxa Ido, crocodile, benzoin, perubalsum, trubalsum, tuberose oil, mustin tincture, castrium tincture, civet tincture, ambergris tincture, peppermint oil, perilla oil, petitgren oil, pine oil, rose oil, rosemary oil, bran oil , Good oil, clary sage oil, sandalwood oil, spearmint oil, spike lavender oil, star anise oil, lavandin oil, lavender oil, lemon oil, lemongrass oil, lime oil, neroli oil, oak moss oil, okothia oil, patchouli oil, Thyme oil, tonka bean tincture, turpentine oil, vanilla bean tincture, basil oil, nutmeg oil, citronella oil, clove oil, bored rose oil, cananga oil, cardamom oil, cassia oil, cedarwood oil, orange oil, mandarin oil, tangerine oil, Anise oil, Examples include oil, coriander oil, elemi oil, eucalyptus oil, fennel oil, galvanum oil, geranium oil, hiba oil, cocoon oil, jasmine oil, vetiver oil, bergamot oil, ylang ylang oil, grapefruit oil, yuzu oil, etc. it can. These fragrance | flavors may be used individually by 1 type, and can also be used by flavoring combining 2 or more types arbitrarily. As the fragrance used in the fragrance liquid of the present invention, a fragrance adjusted so that the fragrance according to palatability can be perceived is preferably used. Specific examples of such fragrance include lavender fragrance and orange fragrance. , Jasmine flavor, marine flavor, soap flavor, strawberry flavor, mint flavor, herb flavor, chamomile flavor, peach flavor, lemon flavor, lime flavor, grapefruit flavor and the like.

  The surfactant to be blended in the aromatic liquid of the present invention is any of a nonionic surfactant, an anionic surfactant, a cationic surfactant, and an amphoteric surfactant. Also good.

  Specific examples of the nonionic surfactant to be blended in the aromatic liquid of the present invention include polyoxyalkylene hardened castor oil such as polyoxyethylene hardened castor oil; polyoxyalkylene hardened castor oil ether such as polyoxyethylene hardened castor oil ether Polyoxyalkylene alkyl ethers such as polyoxyethylene lauryl ether, polyoxyethylene oleyl ether, polyoxyethylene decyl ether and polyoxyalkylene decyl ether; polyoxyalkylene fatty acid esters such as polyoxyethylene fatty acid ester; polyoxyethylene glyceryl ether Polyoxyalkylene glyceryl ether fatty acid esters such as fatty acid esters; alkyl alkanolamides; alkyl polyglucosides; sorbitan fatty acid esters; glycerin Fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene polyoxypropylene glycol and the like. Among these, preferably polyoxyalkylene hydrogenated castor oil ether and polyoxyalkylene alkyl ether; more preferably polyoxyethylene hydrogenated castor oil ether and polyoxyalkylene decyl ether; particularly preferably polyoxyethylene hydrogenated castor oil ether; and Examples include polyoxyethylene decyl ether.

  Specific examples of the anionic surfactant to be blended in the aromatic liquid of the present invention include alkyl sulfates, polyoxyethylene alkyl ether sulfates, sulfosuccinates, dialkylsulfosuccinates (for example, di-2-ethyl acetate). Examples include sodium xylsulfosuccinate, sodium dioctylsulfosuccinate, etc.), N-acyl amino acid salts, carboxylates, sulfonic acids, phosphate esters and the like. Of these, dialkylsulfosuccinate is preferable, and dioctylsulfosuccinate is more preferable.

  Specific examples of the cationic surfactant to be blended in the aromatic liquid of the present invention include alkyl ammonium salts.

  Specific examples of the zwitterionic surfactant to be blended in the aromatic liquid of the present invention include alkylamidobetaines and alkyldimethylamine oxides.

  Among these surfactants, a nonionic surfactant is preferably used from the viewpoint of keeping the rate of weight loss of the aromatic liquid more stable from the first period of use to the second stage while ensuring the transparency of the aromatic liquid. It is done.

  In the fragrance liquid of the present invention, these surfactants may be used alone or in combination of two or more.

  In the fragrance of the present invention, the fragrance and the surfactant are 0.4 to 1 part by weight, preferably 0.4 to 0.9 part by weight, more preferably 0.4 to 1 part by weight of the surfactant per weight of the fragrance. It is included in a range that satisfies the ratio of 0.7 parts by weight. In this way, by reducing the blending ratio of the surfactant as compared with the conventional fragrance liquid, it is possible to stably maintain the rate of weight loss of the fragrance liquid from the first period of use to the second stage, and further, the amount of residue after use. Can also be reduced. If the surfactant is lower than the above ratio, there is a tendency that the dispersion of the fragrance is insufficient and it becomes impossible to prepare a transparent fragrance, and if the surfactant is higher than the above ratio, in the later stage of use. There is a tendency for the weight loss rate of the fragrance liquid to be slow.

  Further, in the fragrance liquid of the present invention, the concentration of the fragrance and the surfactant is not particularly limited as long as both satisfy the above blending ratio, and the kind of the fragrance and the surfactant, and the fragrance of the fragrance liquid. What is necessary is just to set suitably according to the intensity | strength etc. of this. As an example, the concentration of the fragrance is 0.5 to 30% by weight, preferably 0.5 to 10% by weight, more preferably 1 to 5% by weight; the concentration of the surfactant is 0.2 to 30% by weight, Preferably 0.2-10 weight%, More preferably, 0.4-3 weight% is illustrated.

  The fragrance liquid of the present invention includes a volatile aqueous solvent as a base, so that the volatility of the fragrance, the intensity of the fragrance, the sustainability, and the like are appropriately adjusted. The aqueous solvent used in the fragrance liquid of the present invention is not particularly limited. For example, water; alcohols such as methanol, ethanol, propanol, butanol, 3-methoxy-3-methyl-1-butanol; and ethylene Examples include glycols such as glycol, propylene glycol, and dipropylene glycol. Among these, preferably water, ethanol, 3-methoxy-3-methyl-1-butanol, propylene glycol, dipropylene glycol; more preferably water and 3-methoxy-3-methyl-1-butanol. . In the aromatic liquid of the present invention, these aqueous solvents may be used alone or in combination of two or more.

  The aromatic liquid of the present invention desirably contains at least water as an aqueous solvent in order to give an appropriate volatilization rate to the fragrance. In the aromatic liquid of the present invention, the concentration of water is, for example, 40 to 99% by weight, preferably 85 to 99% by weight, and more preferably 92 to 98% by weight.

  The aromatic liquid of the present invention may be blended with other components in addition to the above blended components, as long as the effects of the present invention are not hindered. Other components that can be blended in the aromatic liquid of the present invention include, for example, preservatives, antioxidants, solvents, deodorants, disinfectants, ultraviolet absorbers, pH adjusters, insecticide components, insecticide components, repellent components, etc. Of the ingredients.

  Specific examples of the preservative that can be blended in the aromatic liquid of the present invention include sorbic acid, methyl p-oxybenzoate, ethyl p-oxybenzoate, propyl p-oxybenzoate, 1,2-benzisothiazoline- 3-one, 2n-octyl-isothiazolin-3-one and the like.

  Specific examples of the antioxidant that can be blended in the aromatic liquid of the present invention include dibutylhydroxytoluene (BHT), butylhydroxyanisole (BHA), ascorbate, isoflavone, α-tocopherol, and the like.

  Specific examples of the deodorant that can be blended in the fragrance of the present invention include dichloroisocyanurate; extracts of plants such as rice, pine, cypress, persimmon, persimmon, and tea; desalted betaine compounds; Organic acid compounds; alkanolamines; stabilized chlorine dioxide; aldehyde compounds; glycol ether compounds; amphoteric surfactant deodorants and the like.

  Specific examples of the disinfectant that can be blended in the aromatic liquid of the present invention include isopropylmethylphenol, p-hydroxybenzoate ester, PCMX, IPBC, chlorhexidine gluconate, chlorhexidine hydrochloride, benzethonium chloride, cetylpyridinium chloride, chlorine dioxide, Examples include dichloroisocyanurate, terpene hydrocarbon fragrance, terpene alcohol fragrance, phenol fragrance, aromatic alcohol fragrance, and aldevid fragrance.

  Specific examples of ultraviolet absorbers that can be blended in the aromatic liquid of the present invention include benzotriazole compounds (2- (3,5-di-tert-pentyl-2-hydroxyphenyl) -2H-benzotriazole), benzophenone compounds A compound (2,2 4,4 tetrahydroxy benzophenone) and the like.

  Specific examples of pH adjusters that can be blended in the fragrance of the present invention include alkanolamines such as monoethanolamine, diisopropanolamine, diethanolamine, and triethanolamine; citric acids such as trisodium citrate and potassium citrate. Alkali metal salts of ethylenediaminetetraacetic acid, sodium hydroxide, basic amino acids (arginine), calcium salts such as calcium carbonate, and the like.

  Specific examples of the insecticidal component that can be blended in the aromatic liquid of the present invention include hinokitiol, hiba oil, allyl isothiocyanate, propylene glycol monomethyl ether, ethanol, propanol, 1.8-cineole, and pyrethroid compounds. .

  Specific examples of the insect repellent component that can be blended in the aromatic liquid of the present invention include naphthalene compounds, paradichlorobenzene compounds, camphor and the like.

  Specific examples of repellent components that can be blended in the aromatic liquid of the present invention include N, N-diethyl-m-toluamide, dimethyl phthalate, dibutyl phthalate, p-menthane-3,8-diol, and 2-ethyl-1. , 3-hexanediol, di-n-propylisocincomeronate, p-dichlorobenzene, di-n-butylsuccinate, caran-3,4-diol, 1-methylpropyl-2- (2-hydroxyethyl) Examples include -1-piperidinecarboxylate and allyl isothiocyanate.

The aromatic liquid of the present invention is characterized by being transparent in appearance. In the present invention, “transparent” is a state in which a fragrance is dispersed without being clouded in an aqueous solvent, and includes any state of colorless and transparent, colorless and translucent, colored and transparent, and colored and translucent. In the present invention, one embodiment of the transparent fragrance liquid is one in which a fragrance is finely dispersed (ie, nanoemulsified) into a size of several μm to several tens of nm in an aqueous solvent. It is done. In the present invention, as another aspect of the transparent fragrance, the intensity of diffracted / scattered light detected by all sensor elements is 50 or less, preferably 20 or less, more preferably, under the measurement conditions shown below. Is 10 or less. The diffraction / scattered light intensity is an index indicating that the smaller the value, the higher the transparency.
<Measurement conditions for transparency>
Equipment used: Shimadzu Laser Diffraction Particle Size Distribution Analyzer SALD-2200
Cell used: Batch cell Refractive index parameter: 1.60-0.50i
Blank: Pure water Dispersion method: Manual stirring Measurement procedure: After performing blank measurement while previously filling the cell with pure water and stirring, all the pure water is discharged, and the aromatic liquid is replaced.

  The aromatic liquid of the present invention is a method for performing nanoemulsion treatment (hereinafter referred to as nanoemulsion treatment method); a concentrated mixed solution containing a fragrance, a surfactant and an aqueous solvent is prepared, and the concentrated mixed solution is used. It can be produced by a production method (hereinafter referred to as a concentration method); and a method using a nanoemulsion treatment and a concentration method in combination (hereinafter referred to as a composite method). These production methods are not reported as conventional methods for producing an aromatic liquid, but are new. That is, the fragrance liquid of the present invention is different from the conventional fragrance liquid in that the blending amount of the surfactant is small and is transparent, and such a characteristic of the fragrance liquid of the present invention is the novel production described above. It is thought to have been brought about by adopting the method. Hereinafter, the manufacturing method of the aromatic liquid of this invention is explained in full detail.

<Nanoemulsion method>
In order to prepare the fragrance liquid of the present invention by the nanoemulsification method, the mixture of the fragrance and the surfactant and, if necessary, other ingredients are added to an aqueous solvent, and this is subjected to known nanoemulsion treatment. do it. The nanoemulsion treatment can be performed, for example, by a known treatment method such as ultrasonic treatment, high-pressure emulsification treatment, high-speed swirling thin film treatment, or high shear type dispersion treatment. Among these nanoemulsion treatment methods, ultrasonic treatment and high-pressure emulsification treatment are preferable because they are excellent in physical shearing action and can efficiently prepare a nanoemulsion-type aromatic liquid.

  These nanoemulsion treatments may be carried out by one kind of treatment method alone or in combination of two or more kinds of treatment methods.

  About nanoemulsion processing conditions, what is necessary is just to set suitably according to the composition of an aromatic liquid, the transparency provided to an aromatic liquid, the kind of processing method, etc. FIG. For example, if 1 L of aromatic liquid is prepared by ultrasonic treatment, for example, an ultrasonic vibration with an output of 50 to 600 W, a frequency of 10 to 30 KHz, and an amplitude of 10 to 200 μm may be applied for about 1 to 30 minutes. Further, for example, in the case of high-pressure emulsification treatment, a pressure of 5 to 150 MPa may be applied under a temperature condition of 20 to 40 ° C., for example.

  The fragrance liquid produced by the nanoemulsification method can be provided with a transparent appearance by making the fragrance component finer and dispersing in an aqueous solvent and further satisfying the above-mentioned diffraction / scattered light intensity. It has become.

<Concentration method>
In order to prepare the fragrance liquid of the present invention by the concentration method, a fragrance, a surfactant, and an aqueous solvent (a part of the aqueous solvent mixed in the fragrance liquid) are mixed to prepare a concentrated mixed liquid, and the concentrated liquid What is necessary is just to mix a liquid mixture with an aqueous solvent (remaining aqueous solvent). In this way, by mixing the aqueous solvent with the fragrance in two steps, an aromatic liquid having a transparent appearance can be prepared without clouding without performing a special treatment such as an emulsification treatment. . Specifically, the production of the aromatic liquid of the present invention by the concentration method is carried out according to the following procedure.

  First, the surfactant satisfies the ratio of 0.4 to 1 part by weight per fragrance and the ratio of the aqueous solvent to 100 to 600 parts by weight per 100 parts by weight of the total amount of fragrance and surfactant is satisfied. In addition, a fragrance concentrate is prepared by mixing a fragrance, a surfactant, and an aqueous solvent (first step). That is, in the first step, the fragrance concentration is achieved by mixing the total amount of the fragrance blended in the fragrance liquid, the total amount of the surfactant blended in the fragrance liquid, and a part of the aqueous solvent blended in the fragrance liquid. Prepare the solution. In this way, by mixing the fragrance and the surfactant with an aqueous solvent so as to have a high concentration, a fragrance concentrate having a transparent appearance without being clouded can be obtained without performing a special treatment such as an emulsification treatment. be able to. In the first step, the total amount of the fragrance and the surfactant and the mixing ratio of the aqueous solvent may satisfy the above-described ratio, but from the viewpoint of producing a more transparent fragrance, The aqueous solvent is preferably 100 to 500 parts by weight, more preferably 150 to 300 parts by weight per 100 parts by weight of the total amount of the surfactant.

  In the first step, the mixing order of the fragrance, the surfactant, and the aqueous solvent is not particularly limited, but a highly transparent fragrance concentrate is obtained, and finally the transparency of the aromatic liquid to be finally produced is From the viewpoint of increasing the viscosity, it is desirable to first mix the fragrance and the surfactant, and then mix the mixture of the fragrance and the surfactant with the aqueous solvent.

  Next, an aromatic liquid is prepared by mixing the fragrance concentrate obtained in the first step and an aqueous solvent (second step). In this way, the fragrance concentrate obtained in the first step is mixed with an aqueous solvent, so that no special treatment such as ultrasonic treatment or high-pressure emulsification treatment is required, and a fragrance having a transparent appearance without white turbidity. A liquid can be produced. In addition, since the composition of the mixture of the fragrance concentrate and the aqueous solvent becomes the composition of the fragrance liquid of the present invention, the amount of the aqueous solvent mixed with the fragrance concentrate in the second step is blended in the fragrance liquid. It is set to an amount (remaining aqueous solvent) corresponding to the amount obtained by subtracting the amount of the aqueous solvent blended with the fragrance concentrate from the total amount of the aqueous solvent.

  Moreover, what is necessary is just to set the addition time suitably according to the polarity of the said compounding component, when mix | blending other compounding components other than a fragrance | flavor and surfactant in the aromatic liquid of this invention. For example, when an oil component is blended as another blending component, it is desirable to add it to the fragrance concentrate by blending at the stage of the first step. Moreover, when mix | blending a water-soluble component as another compounding component, you may add in any step of the said 1st and 2 processes.

  The aromatic liquid produced by the concentration method can be provided with a transparent appearance by satisfying the diffraction / scattered light intensity described above.

<Composite method>
In order to prepare the fragrance liquid of the present invention by the composite method, the fragrance liquid is prepared by the concentration method described above, and the obtained fragrance liquid is further subjected to the nanoemulsion treatment described above. As described above, by performing the combination of the concentration method and the nanoemulsion treatment, it becomes possible to produce an aromatic liquid having higher transparency. The nanoemulsion treatment used in the composite method may be any of the treatment methods described above, but from the viewpoint of further improving the transparency of the fragrance liquid, preferably ultrasonic treatment and high-pressure emulsification treatment, more preferably ultra Examples include sonication.

  The aromatic liquid of the present invention obtained by the composite method is dispersed in a state in which the particle size of the fragrance is finer, and further shows a lower value for the above-mentioned diffraction / scattered light intensity, and the transparency is further improved. . In addition, the aromatic liquid of the present invention produced by the composite method has an advantage that it is possible to further reduce the blending ratio of the surfactant and is excellent in terms of storage stability of appearance properties.

  The fragrance liquid of the present invention may be used in the form of a liquid fragrance as it is in the liquid state, or it may be impregnated in a water-absorbing gel and used in the form of a gel fragrance.

  When the fragrance liquid of the present invention is used in the form of a liquid fragrance, the fragrance liquid may be used as it is in a container, or a natural resin such as paper, pulp, synthetic fiber, synthetic resin, or cellulose. Alternatively, the aromatic liquid may be impregnated in a container and used in a container.

  As a preferred embodiment of the fragrance device using the fragrance liquid of the present invention in the form of a liquid fragrance, a container provided with a suction and volatilization member for sucking the fragrance liquid stored in the container and volatilizing it to the outside Examples of the housing include a fragrance device in which the fragrance liquid of the present invention is housed. Here, the wicking volatilization member may have a configuration in which at least a part is immersed in the aromatic liquid in the container and at least a part is exposed or exposed outside the container. . In addition, it is desirable that the wicking volatilization member is mainly composed entirely of a fiber layer excellent in the wicking and volatilization effect of the fragrance liquid, and the fiber layer is made of natural fibers such as vegetable fiber and pulp, rayon, It can be comprised with fibrous materials, such as synthetic fibers, such as polyester, PET (polyethylene terephthalate), PP (polypropylene), or those mixed fibers. In particular, the fiber layer is preferably a non-woven fabric produced by a spunbond method, a spunlace method, or the like, but may also be a woven fabric, a knitted fabric, or the like. Further, the wicking member may be a synthetic resin sponge material such as knitted fabric or urethane foam. Although the thickness of the said wicking volatilization member is not specifically limited, About 2 to about 20 mm is preferable from viewpoints, such as a magnitude | size of the container which accommodates an aromatic liquid, a handleability, and a fragrance | flavor volatilization effect.

  When a conventional fragrance liquid is contained and used in a container having the wicking volatilization member, the concentration of the surfactant in the fragrance liquid increases with the passage of the use period, which clogs the wicking volatilization member. As a result, there was a tendency that the fragrance volatility could not be sufficiently exhibited due to a decrease in the rate of weight loss of the aromatic liquid in the later stage of use. On the other hand, in the fragrance of the present invention, the blending amount of the surfactant is reduced as compared with the conventional fragrance, and the adverse effect of the surfactant remaining in the later stage of use is avoided. One advantage. That is, according to the fragrance liquid of the present invention, even if it is housed in a container equipped with the above-described wicking member, the rate of weight loss of the fragrance liquid can be kept stable even in the later period of use, It is possible to release a uniform fragrance over the entire area.

  Further, when the fragrance liquid of the present invention is in the form of a gel fragrance, the water-absorbent resin is obtained by impregnating the fragrance liquid of the present invention into a known water-absorbent resin such as an acrylamide-acrylate copolymer. The aromatic liquid of the present invention may be contained in In a gel-type fragrance using a conventional fragrance, the volatility of the fragrance tends to be hindered by a surfactant having an increased concentration in the later stage of use. On the other hand, according to the gel-like fragrance using the fragrance of the present invention, the fragrance can be volatilized stably from the first period of use to the second stage, and the gel-like fragrance of the conventional fragrance is used. The drawbacks have been eliminated.

EXAMPLES Hereinafter, although an Example etc. are given and this invention is demonstrated, this invention is not limited to these Examples.
Example I Preparation of Fragrance Liquid (Nanoemulsification Method) and Evaluation <Preparation of Fragrance Liquid>
An aromatic liquid having the composition shown in Table 1 was prepared according to the following method.

Example 1-5, Preparation Method of Aromatic Liquids of Comparative Examples 1, 3, and 5 A hydrophilic deodorant, a hydrophilic preservative, diethanolamine, and an antifoaming agent (silicone) were mixed to prepare a hydrophilic mixture. Separately, a lavender fragrance, polyoxyethylene decyl ether, polyoxyethylene hydrogenated castor oil ether, and dialkylsulfosuccinate were mixed to prepare a lipophilic mixture.

  Next, the lipophilic mixture was added to the hydrophilic mixture while stirring little by little, and an appropriate amount of water was added to obtain a total raw material mixture of 1000 g.

  Using an ultrasonic homogenizer (US-600TCVP, manufactured by Nippon Seiki Seisakusho Co., Ltd.) for 500 mL of the raw material mixture obtained in this manner, the nano mixture for 30 minutes under the conditions of an output of 600 W, a frequency of 19.5 kHz, and an amplitude of 30 μm A fragrance liquid was obtained by carrying out an emulsion treatment.

Preparation Method of Aromatic Liquids of Comparative Examples 2, 4 and 6 A hydrophilic deodorant, a hydrophilic preservative, diethanolamine and an antifoaming agent (silicon) were mixed to prepare a hydrophilic mixture. Separately, a lavender fragrance, polyoxyethylene decyl ether, polyoxyethylene hydrogenated castor oil ether, and dialkylsulfosuccinate were mixed to prepare a lipophilic mixture.

  Next, the lipophilic mixture was added to the hydrophilic mixture little by little, and an appropriate amount of water was added to obtain a total amount of 1000 g of fragrance.

<Evaluation of transparency of aromatic liquid>
The appearance of the aromatic liquid (Example 1-5 and Comparative Example 1-6) was observed with the naked eye. As a result, the aromatic liquids of Example 1-5 and Comparative Examples 2, 4, and 6 were transparent and had a good appearance that felt aesthetics. On the other hand, the fragrances of Comparative Examples 1, 3 and 5 were cloudy and the aesthetics were impaired.

  Furthermore, in order to analyze the transparency of the aromatic liquid (Example 2 and Comparative Examples 3 and 4), the diffraction / scattered light intensity was measured under the following measurement conditions using a laser diffraction particle size distribution measuring apparatus.

Equipment used: Shimadzu Laser Diffraction Particle Size Distribution Analyzer SALD-2200
Cell used: Batch cell Refractive index parameter: 1.60-0.50i
Blank: Pure water Dispersion method: Manual stirring Measurement procedure: After performing blank measurement while previously filling the cell with pure water and stirring, all the pure water was discharged, and the measurement was performed after replacing the aromatic liquid.

  The results of measuring the intensity of diffraction / scattered light for each aromatic liquid are shown in FIG. In the aromatic liquids of Example 2 and Comparative Example 4, the diffraction / scattered light intensity was 10 or less in all the sensor elements. On the other hand, in the aromatic liquid of Comparative Example 3, the diffracted / scattered light intensity was far greater than 10 in the sensor elements with more than half.

  As described above, from both the observation result with the naked eye and the measurement result of the diffraction / scattered light intensity, the aromatic liquid (Example 1-4) in which the blending ratio of the surfactant is low but the nanoemulsion treatment is performed, and In the aromatic liquid (Comparative Examples 2, 4 and 6) having a high blending ratio of the surfactant, it was transparent and good in appearance, whereas the aromatic liquid simply having a low blending ratio of the surfactant (Comparative Example 1). 3 and 5), it was confirmed that the appearance was deteriorated due to white turbidity.

<Measurement and sensory evaluation of weight loss rate of fragrance>
Specifically, 400 mL of the fragrance liquid (Example 2 and Comparative Example 4) was put into a 450 ml container (opening area: about 12 cm ² ). Next, a suction and volatilization member for sucking up the aromatic liquid in the container and volatilizing it outside the container was inserted into the container in which the aromatic liquid was put. The wicking member has a belt-like structure (approximately 39 cm in length, approximately 3 cm in width, and approximately 1 cm in thickness) in which a part thereof is immersed in the aromatic liquid in the container and the other part is exposed to the outside of the container. is there.

The container prepared in this way, in which the aromatic liquid can be volatilized, was allowed to stand in the room, and the volatilization of the aromatic liquid was started. The remaining amount of aromatic liquid was measured over time from the start of volatilization of the aromatic liquid until 53 days later. Also, before the start of volatilization of the fragrance, 44 days after the start and 57 days after the start, the container containing the fragrance is kept in a stainless steel box (volume: 1000 L) that is kept at 22 ° C. and near odorless and odorless. After being moved and allowed to stand for 20 minutes, the fragrance smelled from the fragrance liquid was determined according to the following criteria by six panelists specializing in fragrance evaluation.
Evaluation criteria / aroma intensity 1 point: weak 2 point: slightly weak 3 point: just right 4 point: slightly strong 5 point: strong / preference -2 point: bad -1 point: slightly bad 0 point: Neither +1 point: Slightly good +2 point: Good / Comprehensive evaluation -2 point: Bad -1 point: Slightly bad 0 point: Not good +1 point: Slightly good +2 point: Good

  The measurement result of the weight loss rate of the aromatic liquid is shown in FIG. The remaining ratio (%) of the aromatic liquid on the vertical axis in FIG. 2 is the ratio of the weight of the remaining aromatic liquid to the weight of the aromatic liquid at the start of volatilization. From the start of volatilization until 20 days after the start of volatilization, the reduction rate of the fragrance liquid was substantially the same as in Example 2 and Comparative Example 4. Therefore, FIG. 2 shows the measurement results of the reduction rate of the fragrance liquid after 20 days from the start of volatilization. Indicates. Furthermore, the result of having photographed the aromatic liquid which remain | survives 32 days after a volatilization start and 47 days after is shown in FIG. From this result, in the fragrance liquid of Example 2, the weight reduction rate is constant and stable until 53 days after the start of volatilization, and after 53 days from the start of volatilization, the fragrance liquid other than the fragrance liquid that has permeated the wicking volatilization member. There was hardly any remaining. In contrast, in the fragrance liquid of Comparative Example 4, the fragrance reduction rate gradually decreased from 53 days after the start of volatilization to 53 days, and even after 53 days from the start of volatilization, it penetrated into the wicking volatilization member. In addition to the fragrance, the fragrance remained.

  Furthermore, Table 2 shows the results of sensory evaluation of the aromatic liquid of Example 2. As is clear from Table 2, in the fragrance liquid of Example 2, no difference was found in the scented smell after 44 days and 57 days after the start of volatilization. On the other hand, in the aromatic liquid of Comparative Example 4, a difference was recognized in the scented smell after 44 days and 57 days after the start of volatilization.

  From these results, it was clarified that, in the fragrance liquid of Example 2, the weight loss rate of the fragrance liquid is stable and the scented smell is constant from the start of use to the later stage of use. On the other hand, in the fragrance liquid of Comparative Example 4 in which the blending ratio of the surfactant is higher than that in Example 2, the rate of weight loss of the fragrance liquid is gradually decreased in the latter period of use, and it is smelled in the later period of use. It was confirmed that the aroma could not be kept constant.

  From the above results, a transparent fragrance can be obtained by increasing the concentration of the surfactant. However, a high concentration of the surfactant can reduce the rate of weight loss of the fragrance in the later stage of use, and consequently the fragrance liquid in the later stage of use. It became clear that the fragrance effect was worsened.

Example II Preparation of aromatic liquid (concentration method and / or nanoemulsification method) and evaluation <Preparation of aromatic liquid>
An aromatic liquid having the composition shown in Table 3 was prepared according to the following method.

Preparation Method of Aromatic Liquid of Example 6-8 A hydrophilic mixture was prepared by mixing 60 g of water with a hydrophilic deodorant, a hydrophilic preservative, diethanolamine, and an antifoaming agent (silicone). Separately, a lavender fragrance, polyoxyethylene decyl ether, polyoxyethylene hydrogenated castor oil ether, and dialkylsulfosuccinate were mixed to prepare a lipophilic mixture. The hydrophilic mixture and lipophilic mixture obtained above were mixed to prepare a fragrance concentrate.

  Subsequently, residual water was added to the said fragrance | flavor concentrated liquid, stirring, and the total amount of 1000g aromatic liquid was obtained.

Preparation Method of Aromatic Liquid of Example 9 A hydrophilic deodorant, a hydrophilic preservative, diethanolamine, and an antifoaming agent (silicon) were mixed to prepare a hydrophilic mixture. Separately, a lavender fragrance, polyoxyethylene decyl ether, polyoxyethylene hydrogenated castor oil ether, and dialkylsulfosuccinate were mixed to prepare a lipophilic mixture.

  Next, the lipophilic mixture was added to the hydrophilic mixture while stirring little by little, and an appropriate amount of water was added to obtain a total raw material mixture of 1000 g.

  Using an ultrasonic homogenizer (US-600TCVP, manufactured by Nippon Seiki Seisakusho Co., Ltd.) for 500 mL of the raw material mixture obtained in this manner, the nano mixture for 30 minutes under the conditions of an output of 600 W, a frequency of 19.5 kHz, and an amplitude of 30 μm A fragrance liquid was obtained by carrying out an emulsion treatment.

Preparation Method of Aromatic Liquid of Example 10-11 A hydrophilic mixture was prepared by mixing 60 g of water with a hydrophilic deodorant, a hydrophilic preservative, diethanolamine, and a defoaming agent (silicone). Separately, a lavender fragrance, polyoxyethylene decyl ether, polyoxyethylene hydrogenated castor oil ether, dialkylsulfosuccinate and 3-methoxy-3-methyl-1-butanol were mixed to prepare a lipophilic mixture. The hydrophilic mixture and lipophilic mixture obtained above were mixed to prepare a fragrance concentrate.

  Next, residual water was added to the fragrance concentrate with stirring to obtain a total amount of 1000 g of fragrance (before sonication).

  For the 500 mL of the aromatic liquid thus obtained (before ultrasonic treatment), an ultrasonic homogenizer (US-600TCVP, manufactured by Nippon Seiki Seisakusho Co., Ltd.) was used, and the output was 600 W, the frequency was 19.5 kHz, and the amplitude was 30 μm. The fragrance liquid was obtained by performing nanoemulsion treatment for 30 minutes.

Preparation Method of Aromatic Liquid of Comparative Example 7 A hydrophilic deodorant, a hydrophilic preservative, diethanolamine, and an antifoaming agent (silicon) were mixed to prepare a hydrophilic mixture. Separately, a lavender fragrance, polyoxyethylene decyl ether, polyoxyethylene hydrogenated castor oil ether, and dialkylsulfosuccinate were mixed to prepare a lipophilic mixture.

Next, the lipophilic mixture was added to the hydrophilic mixture little by little, and an appropriate amount of water was added to obtain a total amount of 1000 g of fragrance.
<Evaluation of transparency of aromatic liquid>
The appearance properties of the fragrances immediately after preparation (Examples 6-11 and Comparative Example 7) were evaluated according to the following criteria. In addition, each aromatic liquid was subjected to a cycle test in which a temperature increase from −20 to 40 ° C. and a temperature decrease from 40 ° C. to −20 ° C. were repeated in one cycle per day for 10 days. Evaluation was made according to the following criteria.
Judgment criteria for appearance properties A : The particles of the lipophilic component are not confirmed at all with the naked eye and are transparent.
○: Although the particles of lipophilic components are slightly observed with the naked eye, the particles are almost transparent.
(Triangle | delta): Some cloudiness is confirmed with the naked eye and it is translucent.
X: Obvious white turbidity was confirmed with the naked eye, and it was opaque.
For reference, FIG. 4 shows an index of the above determination criterion.

  The results are also shown in Table 3. As a result, even with the aromatic liquid produced by the concentration method (Examples 6-8), even if the blending ratio of the surfactant was reduced, it had a transparent appearance and a good appearance that felt aesthetics. Similarly, the fragrance liquid (Example 9) produced by the nanoemulsification method was also transparent and had good appearance properties. Furthermore, the fragrance liquid (Example 10-11) produced by using the concentration method and the nanoemulsification method together can provide excellent transparency even when the blending ratio of the surfactant is greatly reduced. Moreover, the appearance properties after storage were also very good. On the other hand, in the aromatic liquid (Comparative Example 7) manufactured by the conventional method by reducing the blending amount of the surfactant, it was cloudy and the aesthetics were impaired.

  Furthermore, the diffraction / scattered light intensity of the aromatic liquid (Examples 8-11 and Comparative Example 7) was measured under the same conditions as in Example I above. The results are shown in FIG. In the fragrance liquid (Examples 9-10) produced by performing the nanoemulsification method (sonication), the diffraction / scattered light intensity showed a very low value of 20 or less in all the sensor elements. In addition, the aromatic liquid produced by performing only the concentration method (Example 8) also showed a low value of 40 or less for most of the sensor elements in the diffraction / scattered light intensity. In contrast, in the aromatic liquid (Comparative Example 7) manufactured by the conventional method with a reduced amount of surfactant, the diffracted / scattered light intensity far exceeds 50 in the sensor element of about 1/3. It was.

  From the above results, it was confirmed that the aromatic liquid produced by the nanoemulsification method and / or the concentration method was transparent and had a good appearance even when the amount of the surfactant was small. In particular, it has been confirmed that the fragrance liquid produced by using the nanoemulsification method and the concentration method in combination has excellent transparency and storage stability.

Example III Preparation (concentration method) and evaluation of aromatic liquid An aromatic liquid having the composition shown in Table 4 was prepared according to the following method. A hydrophilic deodorant, a hydrophilic preservative, diethanolamine, and an antifoaming agent (silicon) were mixed with the amount of water shown in Table 4 to prepare a hydrophilic mixture. Separately, a lavender fragrance, polyoxyethylene decyl ether, polyoxyethylene hydrogenated castor oil ether, and dialkylsulfosuccinate were mixed to prepare a lipophilic mixture. The hydrophilic mixture and lipophilic mixture obtained above were mixed to prepare a fragrance concentrate.

  Subsequently, residual water was added to the said fragrance | flavor concentrated liquid, stirring, and the total amount of 1000g aromatic liquid was obtained.

  The results are also shown in Table 4. As a result, in the concentration method, the blending amount of the surfactant is reduced by preparing about 100 to 600 parts by weight of water per 100 parts by weight of the total amount of the fragrance and the surfactant to prepare a fragrance concentrate. Even so, it was confirmed that an aromatic liquid that was transparent and had good appearance properties and excellent storage stability could be produced. On the other hand, when a fragrance concentrate is prepared by mixing 900 parts by weight or more of water per 100 parts by weight of the total amount of the fragrance and the surfactant, the manufactured fragrance liquid is cloudy and the aesthetics are impaired. It was.

Claims (11)

  An aromatic liquid containing a fragrance and a surfactant, wherein the fragrance contains a surfactant in a ratio of 0.4 to 1 part by weight per fragrance and is transparent.   The fragrance liquid according to claim 1 in the form of a nanoemulsion.   The aqueous solution containing a fragrance and a surfactant in a ratio of 0.4 to 1 part by weight of the surfactant per 1 fragrance is prepared by ultrasonic treatment and / or high-pressure emulsification treatment. The fragrance liquid described in 1. The fragrance liquid according to claim 1, which is produced through the following first and second steps:
The surfactant satisfies the ratio of 0.4 to 1 part by weight per fragrance, and the ratio that the aqueous solvent is 100 to 600 parts by weight per 100 parts by weight of the total amount of the fragrance and the surfactant is satisfied. The first step of preparing a fragrance concentrate by mixing the fragrance, the surfactant, and the aqueous solvent, and the fragrance concentrate by further mixing the aqueous solvent with the fragrance concentrate obtained in the first step. A second step of preparing   The fragrance liquid according to claim 4, which is produced by further subjecting the fragrance liquid obtained in the second step to a nanoemulsion treatment.   The fragrance liquid according to any one of claims 1 to 5, wherein the concentration of the surfactant is 0.4 to 3% by weight.   The fragrance liquid according to any one of claims 1 to 6, wherein the surfactant is a nonionic surfactant.   The fragrance liquid according to any one of claims 1 to 7 is contained in a container provided with a suction volatilization member for sucking up the stored fragrance liquid and volatilizing it outside the container. Characteristic, fragrance.   A gel-like fragrance, wherein the water-absorbent resin contains the fragrance liquid according to any one of claims 1 to 7.   A method for producing an aromatic liquid, comprising subjecting an aqueous solvent containing a perfume and a surfactant in a ratio of 0.4 to 1 part by weight of the perfume to an ultrasonic treatment and / or high-pressure emulsification treatment. The manufacturing method of an aromatic liquid containing the following 1st and 2 processes.
The surfactant satisfies the ratio of 0.4 to 1 part by weight per fragrance, and the ratio that the aqueous solvent is 100 to 600 parts by weight per 100 parts by weight of the total amount of the fragrance and the surfactant is satisfied. The first step of preparing a fragrance concentrate by mixing the fragrance, the surfactant, and the aqueous solvent, and the fragrance concentrate by further mixing the aqueous solvent with the fragrance concentrate obtained in the first step. A second step of preparing

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