JP2008156236A - Deodorant composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an amenity deodorant composition whose deodorizing/masking effects are sustained for a long time and whose smell does not give a sense of incompatibility. <P>SOLUTION: This deodorant composition is characterized by comprising (A) a micro-capsulated perfume prepared by holding a mixed perfume A comprising a plurality of perfume components in an outer shell base material consisting mainly of a water-soluble polymer, and (B) a mixed perfume B comprising a plurality of perfume components, wherein the amount of perfume components having low smell threshold is 50 to 90 mass% in the mixed perfume A. When the mixed perfume A and the mixed perfume B have the same aromatic characteristics, it is preferable that the amount of the mixed perfume A to the amount of the mixed perfume B is 0.5 to 3.0 based on mass. When the mixed perfume A and the mixed perfume B have different aromatic characteristics each other, it is preferable that the amount of the mixed perfume A to the amount of the mixed perfume B is 0.01 to 0.5 based on mass. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a deodorant composition, particularly a deodorant composition comprising a microencapsulated fragrance.

  In general, body odor and sweat odor are thought to be generated when skin secretions from sweat glands such as sebaceous glands, apocrine glands, and eccrine glands are decomposed by normal skin bacteria and converted into lower fatty acids, ketones, ammonia, aldehydes, etc. It has been. In order to prevent or suppress these body odors and sweat odors, various deodorant compositions of various dosage forms in which deodorant / masking fragrances containing odorous ingredients are blended in addition to antiperspirants and fungicides are commercially available. Yes.

The conventional deodorant composition has a problem that the deodorant / masking effect is not sustained because the most fragrance and then the fragrance fade when applied to the skin.
As a method for solving this problem, a technique for enclosing a fragrance with cyclodextrin and gradually releasing the fragrance has been studied, but there is a problem that the cost is high and it is not suitable for the deodorant field in terms of solubility. Therefore, it has not been practically used.

Therefore, in recent years, it has been studied to include a fragrance in a water-soluble microcapsule. Examples of these include powder-containing aerosol compositions containing a water-soluble microencapsulated fragrance (Patent Document 1) and non-aqueous fragrance compositions containing a liquid fragrance and a water-soluble microencapsulated fragrance (Patent Document 2). It is done.
However, in the above-described technology, the current situation is that the consumer has not yet reached a level at which the improvement of the deodorizing / masking effect can be realized.
JP-A-8-208429 JP-A-6-271441

  An object of the present invention is to solve various problems in the prior art and achieve the following objects. That is, an object of the present invention is to provide a deodorant composition that has a deodorizing / masking effect that lasts for a long period of time and has a comfortable odor and is comfortable.

  In the present invention, as a result of intensive studies aimed at solving the above-mentioned problems, the present inventors have used a microcapsulated fragrance and a non-microencapsulated fragrance together, and have a low odor threshold. It was completed by finding that the scent is re-encapsulated by microencapsulation, and the sustainability of the deodorizing / masking effect is improved. Means for solving the above problems are as follows. It is as follows.

<1> (A) A microencapsulated fragrance in which a blended fragrance A containing a plurality of fragrance components is held in an outer shell base mainly composed of a water-soluble polymer compound;
(B) a blended fragrance B containing a plurality of fragrance ingredients,
In the blended fragrance A, the deodorant composition is characterized in that the blending amount of the fragrance component having a low odor threshold is 50 to 90% by mass.
<2> The blended fragrance A and the blended fragrance B have the same fragrance characteristics, and the blended amount of the blended fragrance A with respect to the blended amount of the blended fragrance B is 0.5 to 3.0 on a mass basis <1>. The deodorant composition described in 1.
<3> The blended fragrance A and the blended fragrance B have different fragrance characteristics, and the blended amount of the blended fragrance A relative to the blended amount of the blended fragrance B is 0.01 to 0.5 on a mass basis <1>. The deodorant composition described in 1.
<4> Perfume ingredients having a low odor threshold are oxane, indole, methylanthranilate, carvone, damascon, damacenone, citral, α-pinene, cineol, ethyl vanillin, lactones (γ-decalactone, γ-undecalactone, etc. ), Aldehydes (aldehyde C8, aldehyde C9, aldehyde C10, aldehyde C11 (CYL), aldehyde C12, etc.), ambrox, eugenol, geraniol, geranyl acetate, β-ionone, limonene, linalool, methyl salicylate, rose oxide, and The deodorant composition according to any one of <1> to <3>, which is one or more selected from raspberry ketone.
<5> The deodorant composition according to any one of <1> to <4>, wherein the water-soluble polymer compound is sodium octenyl succinate corn starch ester.
<6> The deodorant composition according to any one of <1> to <5>, wherein the amount of the blended fragrance A is 5 to 60% by mass in the microencapsulated fragrance.
<7> The deodorant composition according to any one of <1> to <6>, wherein the amount of the microencapsulated fragrance is 0.1 to 10% by mass.
<8> Furthermore, the said containing the antiperspirant of 1 type, or 2 or more types selected from chloro hydroxy aluminum, zinc paraphenol sulfonate, chloro hydroxy aluminum propylene glycol, aluminum chloride, potassium aluminum sulfate, and chloro hydroxy zirconium. It is a deodorant composition in any one of <1>-<7>.
<9> Further, one or more fungicides selected from triclosan, isopropylmethylphenol, benzalkonium chloride, benzethonium chloride, trichlorocarbanilide, chlorhexidine hydrochloride, piroctone olamine, and Clara extract are included. It is a deodorant composition in any one of said <1>-<8>.
<10> The deodorant composition according to any one of <1> to <9>, wherein a bulk specific gravity of the microencapsulated fragrance is 0.3 to 0.5 g / mL.
<11> The deodorant composition according to any one of <1> to <10>, which is an aerosol preparation.

  According to the present invention, the above-mentioned problems in the prior art can be solved, and a blended fragrance A containing 50 to 90% by mass of a fragrance component having a low odor threshold is microencapsulated, and a blended fragrance B that is not microencapsulated with this. By using together, it is possible to provide a deodorant composition having a deodorant / masking effect that lasts for a long time.

The deodorant composition of the present invention comprises (A) a microencapsulated fragrance in which a blended fragrance A containing a plurality of fragrance components is held in an outer shell base containing a water-soluble polymer compound as a main component;
(B) a blended fragrance B containing a plurality of fragrance ingredients,
In the blended fragrance A, the blending amount of the fragrance component having a low odor threshold is 50 to 90% by mass.
The inventor has focused on the point that consumers feel dissatisfied with the sustainability of the odor of the deodorant composition, particularly when the consumer sweats. And this invention can reduce the discomfort by a sweat odor by making a scent perceive strongly when sweating. In other words, when sweated, the fragrance is sustained by the sustained release of the blended fragrance A from the water-soluble microcapsules in response to moisture in the sweat.

(A) Microencapsulated fragrance In the present invention, the term “microencapsulated fragrance” refers to a product in which the formulated fragrance A is held in an outer shell base mainly composed of a water-soluble polymer compound, and moisture such as sweat. The blended fragrance A is released by this contact.
In general, microcapsules used in external preparations for skin are classified into a type in which the object to be retained is encapsulated in the center of the outer shell base and a type in which the object to be retained is dispersed as fine particles throughout the outer shell base. The The microcapsules in the present invention are of the latter type, and the prepared fragrance A, which is to be held, is held as fine particles in the water-soluble polymer compound which is the outer shell base.

  Examples of the former type of microcapsule include those in which liquid is encapsulated in an outer shell such as hardened gelatin, but this type of microcapsule does not collapse unless a physical action such as pressing or friction is applied, Further, once disintegrated, the entire amount of inclusions is released at a time, which is not suitable for a mechanism for gradually releasing the fragrance. On the other hand, the microcapsule used in the present invention is partially disintegrated by contact with moisture such as sweat, and only the held object dispersed in the disintegrated portion is released, so that the perfume is gradually reduced. Has an excellent structure to release.

In the deodorant composition of the present invention, from the viewpoint of harmony of fragrance and deodorant effect, two kinds of fragrances, that is, a microencapsulated fragrance in which the mixed fragrance A is held and a mixed fragrance B that is not microencapsulated, are added at a specific ratio. It is important to blend.
As a result of intensive studies on the ratio, the present inventor has found that there are two tendencies. That is, when the fragrance characteristics of the blended fragrance A and the blended fragrance B are the same, the blended amount of the blended fragrance A relative to the blended amount of the blended fragrance B is the mass of the fragrance component so that the fragrance persistence can be easily recognized. The base is preferably 0.5 to 3.0, particularly preferably 0.7 to 2.0. If it is less than 0.5, the sustainability of the scent is not sufficient, and if it exceeds 3.0, the scent becomes too strong.
In addition, when the fragrance characteristics of the blended fragrance A and the blended fragrance B are different, the blended amount of the blended fragrance A relative to the blended amount of the blended fragrance B is based on the mass of the fragrance component so as not to impair the scent of the blended fragrance B. 0.01 to 0.5, and particularly preferably 0.1 to 0.5. If it is less than 0.01, the sustainability of the scent is not sufficient, and if it exceeds 0.5, the scent is uncomfortable.

  In the deodorant composition of the present invention, the blending ratio of the blended fragrance A and the blended fragrance B is determined in consideration of the fragrance, but the blended fragrance A and the blended fragrance B have a preferable fragrance in each. A fragrance component is prepared so as to have a desirable fragrance that lasts as a product even immediately after application.

In addition, in the present invention, the blended fragrance A to be microencapsulated is blended with a fragrance component having a low odor threshold, and is therefore characterized by a very high titer and a fragrance even in a small amount.
In the entire blended fragrance A, the ratio of the fragrance component having a low odor threshold is preferably 50 to 90% by mass, particularly 60 to 80% by mass. If it is less than 50% by mass, it may not be sufficiently fragrant, and if it exceeds 90% by mass, harmony of the scent may be deteriorated.

Here, the “odor threshold” refers to the value of the lowest concentration at which the odor of the aroma component can be felt.
“A fragrance component having a low odor threshold value” means, for example, “Leffingwell, JC et all, Perfume & Flavorist, Vol 16. Jan / Feb. (1991)”, etc. It is a perfume ingredient that can smell. In this invention, the fragrance | flavor component which specifically has an odor threshold of 0.01 ppm or less is pointed out.

  Specific examples of perfume ingredients having a low odor threshold include oxane, indole, methylanthranilate, carvone, damascone, damacenone, citral, α-pinene, cineol, ethyl vanillin, lactones (γ-decalactone, γ-un Decalactone, etc.), aldehydes (aldehyde C8, aldehyde C9, aldehyde C10, aldehyde C11 (CYL), aldehyde C12, etc.), citronellol, unblocks, eugenol, geraniol, geranyl acetate, β-ionone, limonene, linalool, methyl salicylate , Rose oxide, raspberry ketone and the like, and one or more selected from these are preferable. In particular, one or more selected from oxane, indole, methylanthranilate, carvone, damascone, damacenone, citral, α-pinene, cineol, ethyl vanillin, lactones, and aldehydes are preferable.

The fragrance of the blended fragrance can be classified by basic fragrance expression as described in “Basic knowledge of fragrance and fragrance edited by Motoki Nakajima” on page 30. Incense tones commonly used in deodorant compositions include “Citrus, Green, Fruity, Minty, Herbal, Spicy, Floral, Woody. (Woody) / Amber / Musky ”.
In the present invention, the “fragrance characteristic” refers to the above-described commonly used fragrance expression, and the fragrance depends on various factors such as a threshold value of each fragrance component, a blending amount, and the number of blending components. That is, when comparing the fragrance characteristics of the blended fragrance A and the blended fragrance B, the fragrance components of each prescription are classified for each fragrance tone, and the main fragrance tone and the sub fragrance tone are multiplied by the blending amount and the number of blended components. decide.

“Same fragrance characteristics” refers to those that match the main scent. The citrus (main) / floral woody (sub) tone blended fragrance and the citrus (main) / green (sub) tone blended fragrance are considered to have the same fragrance characteristics because the main fragrance tone is common. In addition, citrus (main) / floral woody (sub) tone blended fragrance and musky (main) / floral (sub) tone blended fragrance share the same sub fragrance tone (floral), but the main fragrance tone Because they are different, they are considered to have different aroma characteristics.
However, since fragrance ingredients such as floral, woody, amber, and musky are generally blended at a high ratio, just because these blending amounts are the largest, it does not necessarily mean that the main fragrance is used. That is, the scent may not be determined simply by the amount.

Below, the formulation example of the preparation fragrance | flavor A microencapsulated is given.
(Floral blended fragrance) A
(mass%)
――――――――――――――――――――――――
Eugenol 1.0
Geranyl acetate 7.0
Indole (10%) 1.0
Odor threshold Citronellol 10.0
Low Geraniol 10.0
Fragrance ingredient Rose oxide 2.0
Damasenone 20.0
Damascon 20.0
Methyl salicylate 1.0
――――――――――――――――――――――――
Other perfume ingredients Headion 28.0
――――――――――――――――――――――――
Total 100.0

(Citrus-like fragrance) A
(mass%)
――――――――――――――――――――――――
Aldehyde C8 1.0
Aldehyde C9 1.0
Odor threshold Limonene 20.0
Low citral 30.0
Perfume ingredient linalool 17.0
α-Pinene 1.0
――――――――――――――――――――――――
Other perfume ingredients Hedion 30.0
――――――――――――――――――――――――
Total 100.0

(Mint-like fragrance) A
(mass%)
――――――――――――――――――――――――
Odor threshold Limonene 5.0
Low Caro 30.0
Fragrance ingredient Cineol 35.0
――――――――――――――――――――――――
Other perfume ingredients Hedion 30.0
――――――――――――――――――――――――
Total 100.0

(Fruity blended fragrance) A
(mass%)
―――――――――――――――――――――――――
Oxane (10%) 0.1
Aldehyde C10 0.1
Aldehyde C11 (CYL) 0.2
Aldehyde C12 0.1
Methyl anthranilate 1.0
Odor threshold γ-undecalactone 3.5
Low γ-decalactone 2.0
Fragrance ingredient Ethyl vanillin 1.0
Damascon 20.0
β-ionon 20.0
Raspberry ketone 10.0
Unblocks 10.0
―――――――――――――――――――――――――
Other perfume ingredients Headion 32.0
―――――――――――――――――――――――――
Total 100.0

Each fragrance | flavor component mix | blended with the preparation fragrance | flavor A may be a liquid at normal temperature, or a semi-solid form.
In the present invention, the blending amount of the blended fragrance A is preferably 5 to 60% by mass, particularly preferably 20 to 35% by mass, based on the entire microcapsule. If it is less than 5% by mass, the deodorant effect may not be sufficiently exhibited, and if it exceeds 60% by mass, encapsulation may not be possible.

  It is preferable that the water-soluble polymer compound which is an outer shell component of the microcapsule in the present invention can stably hold the blended fragrance A in the deodorant composition of the present invention. Moreover, it is preferable that the said water-soluble polymer compound has the outstanding water solubility from a disintegration viewpoint of a microcapsule. If the water solubility is not good, moisture on the skin cannot be sensed, and it becomes difficult to gradually release the blended fragrance A, which is an object to be held.

  The water-soluble polymer compound is not particularly limited as long as the effects of the present invention are not impaired, and can be appropriately selected according to the purpose. For example, natural or modified starch, gum arabic, glycogen, xanthan gum, guar gum And oligosaccharides such as sucrose, lactose, trehalose, and guntianose, dextrin, vegetable gum, pectin, and alginate. These may be used individually by 1 type and may use 2 or more types together. In particular, starch such as sodium octenyl succinate corn starch ester is preferred.

  The blending amount of the water-soluble polymer compound is preferably 30 to 80% by mass, and more preferably 40 to 70% by mass with respect to the entire microcapsule. When the blending amount is less than 30% by mass, good microcapsules may not be obtained. When the blending amount exceeds 80% by mass, the strength of the microcapsules may be increased and the fragrance may not be gradually released during use.

As an outer shell component in the microcapsule, in addition to a water-soluble polymer compound, an antioxidant, a water-soluble vitamin, an amino acid, a surfactant, a thickener, an antiseptic, an alcohol, a chelating agent, as necessary. In addition, other components such as a stabilizer can be appropriately selected and contained.
Examples of the antioxidant include ascorbic acid, alkali metal salt of ascorbic acid, fatty acid ester of ascorbic acid, esters of gallic acid, erythorbic acid, butylated hydroxytoluene (BHT), butylated hydroxyanisole (BHA), Tocopherol, tocotrienol and the like can be mentioned, and these may be used alone or in combination of two or more.

Examples of the water-soluble vitamin include vitamin B ₁ , vitamin B ₂ , vitamin B ₆ , nicotinic acid, nicotinic acid amide, pantothenic acid, vitamin H, folic acid, vitamin B ₁₂ , choline, inosit, vitamin L ₁ , vitamin L ₂ , Vitamin B ₁₃ , Vitamin BT, Lipoic acid, Vitamin B ₁₄ , Vitamin B ₁₅ , Vitamin Bx, Vitamin P, etc. are mentioned. These may be used alone or in combination of two or more. May be.

  Examples of the amino acids include glycine, alanine, valine, leucine, isoleucine, serine, threonine, cysteine, cystine, methionine, aspartic acid, glutamic acid, lysine, arginine, phenylalanine, tyrosine, histidine, tryptophan, proline, oxypurine, and the like. These may be used, and these may be used alone or in combination of two or more.

  Examples of the thickener include sodium caseinate, starch, methylcellulose, carboxymethylcellulose, xanthan gum, chitosan, guar gum, tamarind gum, locust bean gum, tragacanth gum, tara gum, cassia gum, arabinogalactan, scleroglucan, pullulan, dextran, Examples include albumin and sodium polyacrylate, and these may be used alone or in combination of two or more.

  Examples of the stabilizer include citric acid, tartaric acid, adipic acid, malic acid, lactic acid, fumaric acid, phosphoric acid, pyrophosphoric acid, phytic acid, sorbic acid, erythorbic acid, alkali metal salts or alkaline earth metals thereof. A salt etc. are mentioned, These may be used individually by 1 type and may be used together 2 or more types.

  The average particle size of the microencapsulated fragrance is preferably 75 μm or less, particularly preferably 10 to 75 μm, and more preferably 10 to 50 μm. If the average particle size is less than 10 μm, it may be difficult to prepare the microcapsules and release the fragrance due to the destruction of the microcapsules, and there is a concern about the risk of entering the lungs. It may be difficult to uniformly disperse the resin. In general, when the average particle size is 51 μm or more, the skin feel is poor, and clogging may occur when aerosolized. However, the microencapsulated fragrance of the present invention is also characterized by its bulk specific gravity. The bulk specific gravity is 0.3 to 0.5 g / mL.

  In the present invention, the blending amount of the microencapsulated fragrance is preferably 0.1 to 10% by mass in the deodorant composition. If it is less than 0.1% by mass, the scent persistence may not be sufficient, and if it exceeds 10% by mass, the scent becomes too strong, which may be unfavorable in terms of formulation.

The method for producing the microcapsules of the present invention is not particularly limited as long as the effects of the present invention are not impaired, and can be appropriately selected according to the purpose. Examples thereof include a phase separation method, an orifice method, a submerged curing method, a spray drying method, a freeze drying method, and the like. Among these, a spray drying method or a freeze drying method is preferable.
Specifically, after dissolving the above-mentioned water-soluble polymer compound to a concentration of several percent to several tens percent, a predetermined fragrance component is added to obtain a dissolved or emulsified liquid, and spray drying (spray drain) And freeze-dry (freeze-dry). In the emulsification, the emulsification can be performed by an arbitrary apparatus such as a homomixer or a high-pressure emulsifier, and spray drying and freeze drying can be performed by a generally known method. The obtained microencapsulated fragrance is preferably passed through a sieve to make the particle diameter uniform.

(B) Blended fragrance B
In the present invention, the blended fragrance B is blended in the deodorant composition without being microencapsulated.
Each fragrance | flavor component mix | blended with the mixing | blending fragrance | flavor B may be a liquid at normal temperature, or a semi-solid form.
In this invention, it is preferable that the compounding quantity of the mixing | blending fragrance | flavor B is 0.002-5 mass% in a deodorant composition. If it is less than 0.002% by mass, the initial deodorant effect after application may not be sufficient, and if it exceeds 5% by mass, the scent becomes too strong, which may be unfavorable in terms of formulation.

The deodorant composition of the present invention preferably further contains an antiperspirant.
Antiperspirants are not particularly limited, but include chlorohydroxyaluminum, zinc paraphenolsulfonate, chlorohydroxyaluminum / propylene glycol, aluminum chloride, aluminum sulfate, aluminum citrate, aluminum acetate, basic aluminum chloride, and phenolsulfonic acid aluminum. , Β-naphthol disulfonate aluminum, sodium perborate, aluminum zirconium octachlorohydrate, aluminum zirconium pentachlorohydrate, aluminum zirconium tetrachlorohydrate, aluminum zirconium trichlorohydrate, zirconium chlorohydrate, potassium aluminum sulfate, allantoin Chlorhydroxyaluminum, basic aluminum bromide, aluminum Mini um naphthalenesulfonic acid, a basic aluminum iodide and the like. These may be used alone or in combination of two or more. Of these, chlorohydroxyaluminum, zinc paraphenolsulfonate, chlorohydroxyaluminum / propylene glycol, aluminum chloride, potassium aluminum sulfate (potash alum), and chlorohydroxyzirconium are preferably used.
The blending amount of the antiperspirant is preferably 0.1 to 30% by weight with respect to the entire deodorant composition. If it is less than 0.1% by weight, the antiperspirant effect that is expected is not exhibited. The valve to be controlled may be clogged.

The deodorant composition of the present invention preferably further contains a bactericidal agent.
The bactericide is not particularly limited, and examples include triclosan, isopropylmethylphenol, benzalkonium chloride, benzethonium chloride, trichlorocarbanilide, chlorhexidine hydrochloride, piroctone olamine, and clara extract. Or may be used in combination of two or more.
It is preferable that the compounding quantity of the said bactericide is 0.01 to 10 weight% with respect to the whole deodorant composition. If it is less than 0.01% by weight, the expected bactericidal effect may not be sufficient, and if it exceeds 10% by weight, skin irritation may occur.

In the deodorant composition of the present invention, optional components usually added to the deodorant composition can be blended within a range not impairing the effects of the present invention.
Optional components include, for example, fats and oils, waxes, silicones, hydrocarbon oils, higher fatty acids, higher alcohols, synthetic ester oils, surfactants, polymer compounds, antioxidants, dyes, emulsion stabilizers, pH adjustment Agents, astringents, preservatives, UV absorbers, chelating agents, moisturizers, thickeners, refreshing agents, anti-inflammatory agents, amino acids, vitamin agents, various plant extracts, etc. It is not something.

  It does not specifically limit as a form example of the deodorant composition of this invention, It is possible to apply widely to cosmetics, a pharmaceutical, a quasi-drug, etc. In addition, as long as the effect of the present invention is not impaired, the aerosol type, gel type, paste type, ointment type, oil liquid type, water-oil two-phase type, water-oil-powder three-phase type, emulsification A wide range of dosage forms such as systems and solubilization systems can be taken. That is, it can be widely applied in various dosage forms such as aerosol, stick, powder, lotion, mask, mist, spray, impregnated sheet, patch, body soap, facial cleanser, emulsion, cream, gel, and pack.

  Especially, it is preferable to set it as an aerosol type | mold from points, such as a deodorant effect and its sustainability, the ease of use, and cleanliness. In the case of an aerosol type, as a propellant, hydrocarbon gas (LPG) such as propane, isobutane, normal butane, isopentane, neopentane, and liquefied gas such as dimethyl ether (DME), in addition to these, carbon dioxide gas, Nitrogen gas or the like can be used. It is particularly preferable to use a hydrocarbon gas. Said propellant can be used individually or in mixture of 2 or more types, respectively. As a compounding quantity, it is preferable that it is the range of 45 to 98 weight% in an aerosol type deodorant composition.

Hereinafter, the present invention will be described in more detail with reference to examples. The present invention is not limited to these examples. Unless otherwise specified, the blending amount indicates mass%.
First, a method for producing the deodorant composition (aerosol type) used in this example will be described.
(Preparation of aerosol type deodorant composition)
100 g of the blended flavor to be microencapsulated and 200 g of sodium octenyl succinate corn starch ester were emulsified with 300 g of water, and the resulting emulsion was spray-dried to obtain a microencapsulated flavor having 33% of the blended flavor. Prepare.
The above microencapsulated fragrance and other materials are put into an aluminum aerosol can (Toyo Seikan Aluminum Can + Nippon Precision Valve Co., Ltd. straight junction valve), and the propellant is filled after the valve is mounted.

1) Simple screening method (model system)
Each aerosol type deodorant composition was evaluated by the following method.
Approximately 0.8 g of sample was sprayed on the medicine wrapping paper (container: aluminum can made by Toyo Seikan + straight junction valve made by Nippon Precision Valve Co., Ltd.) and the harmony of the scent immediately after application (no discomfort) was evaluated. .
Next, assuming the perspiration, about 0.1 g of water was sprayed with a spray, and the expression of fragrance (deodorant effect during perspiration) and harmony of fragrance (no discomfort) were evaluated.
And the persistence of the fragrance 4 hours after application | coating was evaluated.

Each evaluation standard is as follows.
[I] Harmony of scent immediately after application Evaluate whether the scent is uncomfortable immediately after application.
◎: There is no sense of incongruity ○: There is no sense of incongruity △: There is a little sense of incongruity ×: There is a sense of incongruity [II] Aroma expression during sweating Whether or not the fragrance is expressed when water is sprayed is evaluated.
◎: Clearly perceivable scent ○: Slightly recognizable scent △: Slightly recognizable scent ×: Almost unchanged [III] Harmony of sweaty scent When sprayed with water, the scent is uncomfortable Evaluate whether or not
◎: There is no sense of incongruity ○: There is no sense of incongruity △: There is a little sense of incongruity ×: There is a sense of incongruity [IV] Sustainability of fragrance 4 hours after application, it is evaluated whether the fragrance is sustained.
◎: Clearly scented ○: Slightly scented △: Slightly scented ×: Slightly unscented

Microencapsulated fragrance 1: Contains 33% of the following floral-style fragrance A (powder)
Microencapsulated fragrance 2: Contains 33% of the following mint-like fragrance A (in powder form)
Non-microencapsulated fragrance: The following floral blended fragrance B (liquid)

As is clear from Table 1, in Comparative Example 3 using only the non-microencapsulated fragrance, scent persistence was not obtained. On the other hand, when the microencapsulated fragrance and the non-microencapsulated fragrance were used in combination, the scent persistence was high and the scent re-expression effect when sweated was also obtained.
However, in the case where the microencapsulated fragrance and the non-microencapsulated fragrance have the same fragrance characteristics, in Example 1, the scent persistence and the scent re-expression effect were sufficient. In the comparative example 1 with few fragrance | flavors, these were inadequate.
Further, when the microencapsulated fragrance and the non-microencapsulated fragrance have different fragrance characteristics, in Example 2, there was no sense of incongruity in the scent, but in Comparative Example 2 where there is more microencapsulated fragrance than this, There was a sense of incongruity in the scent.

  As a result of further investigation by the present inventor, when using a microencapsulated fragrance and a non-microencapsulated fragrance having the same fragrance characteristics, the blended amount of the blended fragrance A relative to the blended amount of the blended fragrance B is the fragrance component. In the case of using a microencapsulated fragrance and a non-microencapsulated fragrance having 0.5 to 3.0 (particularly 0.7 to 1.5) on a mass basis and different fragrance characteristics, When the blending amount of the blended fragrance A with respect to the blending amount of B is 0.01 to 0.5 (particularly 0.1 to 0.5) based on the mass of the fragrance component, there is no sense of discomfort in the fragrance and It was confirmed that the sustainability and the scent re-expression effect were good.

2) Human feeling method (confirmation of actual effect)
Each aerosol type deodorant composition was evaluated for actual effect by the following method.
Twenty subjects were divided into two groups, sprayed with separate samples on both sides for 2 seconds, and then exercised gently to sweat, and after 6 hours, the panel itself evaluated based on the following evaluation criteria. (First group: Example 1 and Comparative Example 4) (second group: Example 2 and Comparative Example 3).
<Evaluation criteria>
A: 8 or more out of 10 people felt a pleasant scent when they sweated, and did not feel an unpleasant odor.
○: 5 or more out of 10 people felt a pleasant scent when sweating, and did not feel an unpleasant odor.
Δ: 5 or more of 10 people did not feel an unpleasant smell even when they sweated.
X: 5 or more out of 10 people felt an unpleasant odor when they sweated.

Microencapsulated fragrance 1: Contains 33% of the following floral-style fragrance A (powder)
Non-microencapsulated fragrance: The following floral blended fragrance B (liquid)

Microencapsulated fragrance 2: Contains 33% of the following mint-like fragrance A (in powder form)
Non-microencapsulated fragrance: The following floral blended fragrance B (liquid)

  As is clear from the results in Tables 2 and 3, it was confirmed that a pleasant fragrance was felt when sweated by blending the microencapsulated fragrance. All 20 subjects replied that they felt a difference in effect between the left and right samples.

(Floral blended fragrance A) (mass%)
Eugenol 1.0
Geranyl acetate 7.0
Indole (10%) 1.0
Citronellol 10.0
Geraniol 10.0
Rose oxide 2.0
Damasenone 20.0
Damascon 20.0
Methyl salicylate 1.0
Headion 28.0

(Mint-like blended fragrance A) (mass%)
Limonene 5.0
Carvone 30.0
Cineol 35.0
Headion 30.0

(Floral blended fragrance B) (mass%)

Next, by changing the blending amount of the fragrance component having a low threshold in the blended fragrance A to be microencapsulated, various microcapsules are prepared, an aerosol type deodorant composition is prepared according to the following formulation, and each of the above evaluations is performed. It was.
(mass%)
Silicic anhydride (porous silica) 10.0
Silicone composite powder 2.0
Magnesia silica 5.0
Clara extract 1.0
Isopropyl myristate balance decamethylcyclopentasiloxane 3.0
Methyl polysiloxane (10cs) 3.0
POE glyceryl triisostearate (20) 15.0
Dipropylene glycol 1.0
Chlorhydroxyaluminum 25.0
Isopropylmethylphenol 0.1
(A) Microencapsulated fragrance 1 (floral tone) 2.4
(B) Non-microencapsulated fragrance (floral tone) 0.8
Stock solution / propellant (LPG (0.15 MPa / 20 ° C.)) 10/90

As is apparent from Table 4, it was confirmed that the blending amount of the perfume component having a low threshold in the blended perfume A to be microencapsulated is preferably 50 to 90% by mass, particularly 60 to 80% by mass. If the amount is less than 50% by mass, the fragrance developability and the persistence of the scent during sweating are not sufficient, and if it exceeds 90% by mass, the scent is uncomfortable immediately after application or during sweating.
In addition, when this inventor examined further, the compounding quantity of the preparation fragrance | flavor A in a microencapsulated fragrance | flavor is 5-60 mass%, and the compounding quantity of the microencapsulated fragrance | flavor in a deodorant composition is 0.1-10. It was confirmed that when the content was% by mass, a good deodorant effect was exhibited.

(Example 3) Powder spray type deodorant composition <Ingredient> Compounding amount (%)
Chlorhydroxyaluminum 4.0
Magnesia silica 3.0
Silicic anhydride 4.0
Isopropyl myristate 3.0
Methylcyclopolysiloxane 1.5
Decamethylpentasiloxane 3.0
Sorbitan trioleate 0.5
Stearyl glycyrrhetinate 0.02
Vegetable squalane 0.1
Magnesium oxide powder 0.6
Microencapsulated fragrance (containing 33% of the following citrus-flavored fragrance A) 1.2
Non-microencapsulated fragrance (citrus-like fragrance B below) 0.4
Liquefied petroleum gas balance

(Citrus blended fragrance A) (mass%)
Aldehyde C8 1.0
Aldehyde C9 1.0
Limonene 20.0
Citral 30.0
Linalool 17.0
α-Pinene 1.0
Headion 30.0

(Citrus-like fragrance B) (mass%)

(Example 4) Stick type deodorant composition <Ingredient> Compounding amount (%)
Chlorhydroxyaluminum 24.0
Talc 7.0
Stearyl alcohol 9.0
Hardened castor oil 4.0
Microcrystalline wax 2.0
POP (17) Butyl ether 3.0
Dibutylhydroxytoluene 0.1
Methyl polysiloxane 10.0
Stearyl glycyrrhetinate 0.02
Titanium oxide 0.2
Microencapsulated fragrance (containing 33% of the above-mentioned citrus blended fragrance A) 0.6
Non-microencapsulated fragrance (Green floral tone fragrance B below) 0.4
Decamethylpentasiloxane balance

(Green floral blended fragrance B) (mass%)

(Example 5) Spray type deodorant composition <component> Blending amount (%)
Vinylpyrrolidone / vinyl acetate copolymer (molecular weight 100,000) 2.0
Tetraglycerin fatty acid ester 3.0
Magnesium oxide powder 1.0
Polyoxyethylene-modified silicone (1 million cs) 0.5
Polyoxyethylene 40 mol hydrogenated castor oil 0.5
Methylparaben 0.3
Microencapsulated fragrance (containing 33% of the following fruity blended fragrance A) 0.4
Non-microencapsulated fragrance (green floral tone fragrance B) 0.4
Ethanol remainder <Production method>
The above-mentioned stock solution 50%, liquefied petroleum gas 30% and dimethyl ether 20% were mixed, and a spray was prepared by a conventional method.

(Fruity blended fragrance A) (% by mass)
Oxane (10%) 0.1
Aldehyde C10 0.1
Aldehyde C11 (CYL) 0.2
Aldehyde C12 0.1
Methyl anthranilate 1.0
γ-Undecalactone 3.5
γ-decalactone 2.0
Ethyl vanillin 1.0
Damascon 20.0
β-ionon 20.0
Raspberry ketone 10.0
Unblocks 10.0
Headion 32.0

Claims (11)

(A) a microencapsulated fragrance in which a blended fragrance A containing a plurality of fragrance components is held in an outer shell base mainly composed of a water-soluble polymer compound;
(B) a blended fragrance B containing a plurality of fragrance ingredients,
The deodorant composition characterized in that, in the blended fragrance A, the blending amount of the fragrance component having a low odor threshold is 50 to 90% by mass.   The deodorant according to claim 1, wherein the blended fragrance A and the blended fragrance B have the same fragrance characteristics, and the blended amount of the blended fragrance A relative to the blended amount of the blended fragrance B is 0.5 to 3.0 on a mass basis. Composition.   The deodorant according to claim 1, wherein the blended fragrance A and the blended fragrance B have different fragrance characteristics, and the blended amount of the blended fragrance A relative to the blended amount of the blended fragrance B is 0.01 to 0.5 on a mass basis. Composition.   Perfume ingredients with a low odor threshold are oxane, indole, methylanthranilate, carvone, damascon, damacenone, citral, α-pinene, cineol, ethyl vanillin, lactones (γ-decalactone, γ-undecalactone, etc.), aldehydes (Aldehyde C8, aldehyde C9, aldehyde C10, aldehyde C11 (CYL), aldehyde C12, etc.), ambrox, eugenol, geraniol, geranyl acetate, β-ionone, limonene, linalool, methyl salicylate, rose oxide, and raspberry ketone The deodorant composition according to any one of claims 1 to 3, wherein the deodorant composition is one or more selected.   The deodorant composition according to any one of claims 1 to 4, wherein the water-soluble polymer compound is sodium octenyl succinate corn starch ester.   The deodorant composition according to any one of claims 1 to 5, wherein, in the microencapsulated fragrance, the amount of the blended fragrance A is 5 to 60% by mass.   The deodorant composition according to any one of claims 1 to 6, wherein the amount of the microencapsulated fragrance is 0.1 to 10% by mass.   Further, the composition further comprises one or more antiperspirants selected from chlorohydroxyaluminum, zinc paraphenolsulfonate, chlorohydroxyaluminum / propylene glycol, aluminum chloride, potassium aluminum sulfate, and chlorohydroxyzirconium. 8. The deodorant composition according to any one of 7.   Furthermore, it contains one or more fungicides selected from triclosan, isopropylmethylphenol, benzalkonium chloride, benzethonium chloride, trichlorocarbanilide, chlorhexidine hydrochloride, piroctone olamine, and Clara extract. To 8. The deodorant composition according to any one of 8 to 8.   The deodorant composition according to any one of claims 1 to 9, wherein the microencapsulated fragrance has a bulk specific gravity of 0.3 to 0.5 g / mL.   The deodorant composition according to any one of claims 1 to 10, which is an aerosol preparation.