JP6388401B2 - Non aerosol spray products - Google Patents

Description

  The present invention relates to non-aerosol spray products.

  Conventionally, from the viewpoint of giving a dry feel after being applied to the skin, there are known compositions used as deodorants and refreshing cosmetics (cosmetics that give a refreshing feel) containing powder in a liquid such as water or alcohol. (For example, refer to Patent Document 1 and Patent Document 2). These compositions are used by applying to the body after shaking to disperse the powder.

  Further, the composition is often used by being filled in a spray container (atomizer). In that case, the composition is required to have a characteristic that the injection port is not clogged with the powder.

JP 2004-262887 A JP 2003-095906 A

  As a result of intensive studies, the present inventor effectively clogged the injection port in a spray container, particularly a non-aerosol spray container, when particles having a specific strength and a specific average particle diameter are used as powder. I found that it was suppressed. However, the present inventor has also found that a formulation containing such particles tends to have a weaker feeling than conventional particles.

  Accordingly, an object of the present invention is a non-aerosol spray product comprising particles having a specific strength and a specific average particle size, and having a deodorant agent or a refreshing cosmetic material in which water and ethanol are used as a dispersion medium. An object of the present invention is to provide a non-aerosol spray product that can give a better feeling to the user of the non-aerosol spray product even when particles are used.

That is, the gist of the present invention is as follows.
[1] A non-aerosol spray product comprising a non-aerosol spray container and a composition filled in the spray container,
The composition is a deodorant or a refreshing cosmetic,
Component (A): particles having a compressive strength at 5% displacement of 0.1 kgf / mm ² or less and an average particle size of 12 μm or less,
Component (B): ester oil,
Component (C): ethanol, and component (D): water,
Content of the said component (C) in the said composition 100 mass% is 30.0-70.0 mass%, and content of the said component (D) in the said composition 100 mass% is 20.0- Non-aerosol spray product, characterized in that it is 69.0% by weight.

  The main effect of the non-aerosol spray product of the present invention is that it gives a user a very smooth feeling in a composition containing particles of component (A).

  The present invention is a non-aerosol spray product, the non-aerosol spray product comprising a non-aerosol spray container and a composition filled in the spray container. In the present invention, the composition is a deodorant or a refreshing cosmetic.

The composition includes particles having a predetermined compressive strength and an average particle size (particles having a compressive strength at 5% displacement of 0.1 kgf / mm ² or less and an average particle size of 12 μm or less), ester oil , Ethanol and water. The composition preferably further comprises a carboxyvinyl polymer and / or an alkyl-modified carboxyvinyl polymer. In the present specification, the “composition” (composition filled in the non-aerosol spray container) in the non-aerosol spray product of the present invention is referred to as “composition (L)”; The “particles having a diameter” are “component (A)”; the “ester oil” is “component (B)”; the “ethanol” is “component (C)”; the “water” is “component (D)”; The “carboxyvinyl polymer and / or alkyl-modified carboxyvinyl polymer” may be referred to as “component (E)”. The composition (L) may further contain components other than the components (A) to (E). Each of the components contained in the composition (L), for example, the component (A), the component (B), and the component (E) may be used alone or in combination of two or more.

Ingredient (A)
Component (A) in the present specification is a particle having a compressive strength at 5% displacement of 0.1 kgf / mm ² or less and an average particle size of 12 μm or less. By applying the component (A) to the composition (L), the effect of being able to give a smooth feeling to the user while suppressing clogging of the spray nozzle when the composition is applied to the spray container is exhibited. Is done. As for the said component (A), only 1 type may be used and 2 or more types may be used.

The “compressive strength at 5% displacement” of the component (A) is 0.1 kgf / mm ² or less. In view of clogging of the injection port, the compressive strength is preferably at most 0.1 kgf / mm ^2, and more preferably 0.08kgf / mm ² or less. On the other hand, from the viewpoint of silkiness, preferably the compressive strength is 0.0001kgf / mm ² or more, more preferably 0.0005kgf / mm ² or more, it is 0.001kgf / mm ² or more Further preferred. The “compressive strength at 5% displacement” of the component (A) can be measured by a known compression test, and can be determined by, for example, the method described in Examples described later.

  The average particle diameter of the said component (A) is 12 micrometers or less. From the viewpoint of safety, the average particle diameter is preferably 1 μm or more, more preferably 2 μm or more, and further preferably 3 μm or more. On the other hand, from the viewpoint of suppressing spray clogging, the average particle size is 12 μm or less, preferably 11 μm or less, and more preferably 10 μm or less. The “average particle diameter” of the component (A) is a value determined by, for example, the method described in Examples described later.

  Although it does not specifically limit as a component (A), For example, a polyurethane particle, a silicone particle, etc. are mentioned. Since particles satisfying the above ranges of compressive strength and average particle diameter are commercially available, particles having desired values can be easily obtained.

Although it does not specifically limit as a specific example of the commercial item of a component (A), For example, Toago Pigment Co., Ltd. brand name "PLASTIC POWDER D-800" (compressive strength: 0.05 kgf / mm < ² >; average particle diameter) : 8.89 μm), trade name “CA powder” manufactured by Shin-Etsu Chemical Co., Ltd. (compressive strength: 0.005 kgf / mm ² ; average particle size: 9.24 μm), and the like.

  Although content of the component (A) in a composition (L) is not specifically limited, 0.05-10.0 mass% in 100 mass% of this composition is preferable, and 0.10-5.0 mass% is preferable. More preferably, 0.5-2.0 mass% is further more preferable. From the viewpoint of imparting a smooth feeling due to the particles when applied to the skin, the content is preferably 0.05% by mass or more, from the viewpoint of suppressing white floating (a phenomenon in which the applied portion becomes white when applied to the skin). The content is preferably 10.0% by mass or less. In addition, when using a some component (A) together, content of a component (A) means those total amount.

Ingredient (B)
Component (B) in this specification is ester oil. The ester oil is more preferably an ester oil selected from the group consisting of diisopropyl adipate, diisobutyl adipate, diisopropyl sebacate and ethyl oleate. Of these, diisopropyl adipate is particularly preferred. As for the said component (B), only 1 type may be used and 2 or more types may be used. By applying the component (B) to the composition, it is possible to impart a very smooth feeling to the user of the product of the present invention. Furthermore, when a composition (L) contains the below-mentioned component (E), a component (B) also has an effect which suppresses the stickiness accompanying addition of a component (E). Such component (B) can be easily obtained as a commercial product.

  The content of the component (B) in the composition (L) is preferably 0.01 to 5.0% by mass, more preferably 0.1 to 3.0% by mass, and further 0.5 to 2.0% by mass. preferable. The content is preferably 0.01% by mass or more from the viewpoint of imparting a smooth feeling, and from the viewpoint of suppressing sliminess, the content is preferably 5.0% by mass or less. In addition, when using a some component (B) together, content of a component (B) means those total amounts.

Ingredient (C)
Component (C) in this specification is ethanol. A component (C) has a role as a medium of a composition (L) with a component (D), a role which gives a refreshing feeling to skin, and a role which improves quick-drying property.

  The content of the component (C) in 100% by mass of the composition (L) is 30.0 to 70.0% by mass, preferably 35.0 to 65.0% by mass, and 40.0 to 60.0% by mass. % Is more preferable. From the viewpoint of quick drying, the content is preferably 30.0% by mass or more, and from the viewpoint of reducing skin irritation, the content is preferably 70.0% by mass or less.

Ingredient (D)
In the present specification, the component (D) is water. The component (D) has a role as a medium of the composition (L) together with the component (C).

  Content of the component (D) in a composition (L) is 20.0-69.0 mass%, 30.0-64.0 mass% is preferable, and 35.0-59.0 mass% is more preferable. . From the viewpoint of being a base, the content is preferably 20.0% by mass or more, and from the viewpoint of stickiness suppression and quick drying, the content is preferably 69.0% by mass or less.

Ingredient (E)
Component (E) herein is a carboxyvinyl polymer and / or an alkyl-modified carboxyvinyl polymer (one or both of a carboxyvinyl polymer and an alkyl-modified carboxyvinyl polymer). The composition (L) preferably further contains a component (E) for the purpose of further exhibiting the caking inhibiting effect (that is, improving the redispersibility). In particular, since the composition (L) has a high content of ethanol, caking tends to occur. For this reason, adding component (E) is particularly effective for improving caking deterrence.

  The carboxyvinyl polymer is mainly a polymer of acrylic acid, and the alkyl-modified carboxyvinyl polymer is mainly a copolymer of acrylic acid and alkyl methacrylate (for example, C10 to C30).

  The carboxyvinyl polymer and the alkyl-modified carboxyvinyl polymer can be easily obtained as commercial products. Preferred commercially available products of carboxyvinyl polymer include, for example, trade names: Carbopol 934, Carbopol 940, Carbopol 941, Carbopol 981, Carbopol 1342, Carbopol 2984, Carbopol Ultrez 10, Carbopol ETD 2050 (Japan) Lubrizol Corp.); trade names: AQUPEC HV-501, AQUPEC HV-504, AQUPEC HV-505, Hibiswaco 104, Hibiswaco 105 (Wako Pure Chemical Industries, Ltd.) and the like. Preferable commercial products of the alkyl-modified carboxyvinyl polymer include, for example, trade names: PEMULEN TR-1, PEMULEN TR-2, Carbopol ETD 2020, Carbopol ULTREZ 20 (Nippon Lubrizol Corporation), and the like.

  The content of the component (E) in the composition (L) is preferably 0.0001 to 0.008% by mass in 100% by mass of the composition, and 0.001 to 0.006 from the viewpoint of caking deterrence. % By mass is more preferable, and 0.001 to 0.005% by mass is more preferable. When the content of the component (E) is 0.0001% by mass or more, the effect of suppressing the caking of the component (A) is particularly improved. Further, by suppressing the content of the component (E) to a small amount of 0.008% by mass or less, the stickiness of the skin after application of the composition is suppressed, and the component after shaking the composition ( A) aggregation is reduced and dispersibility is improved. When the content of the component (E) exceeds 0.008% by mass, the component (A) tends to aggregate and settle after the composition is shaken and redispersed. In addition, when using a some component (E) together, content of a component (E) means those total amounts.

  Surprisingly, in the composition (L), the effect of suppressing the caking of the component (A) is particularly improved by adding the component (E) in an extremely small amount of 0.0001 to 0.008% by mass. This is presumed that the addition of component (E) causes the particles of component (A) to be in intimate contact with each other because component (E) is electrically adsorbed onto the particle surface of component (A). Is done.

  The carboxyvinyl polymer and the alkyl-modified carboxyvinyl polymer are not particularly limited, but are preferably used without being neutralized with a basic substance since the caking inhibiting property is further improved. Examples of the basic substance include alkanolamines such as triethanolamine and monoethanolamine, inorganic bases such as ammonia, sodium hydroxide, and potassium hydroxide, and basic amino acids such as arginine.

  In the field of cosmetics, it is known that component (E) is used as a thickener (generally used in a neutralized form), but effective thickening as described above. It is a feature that has not been known so far to use it in a very small amount that does not exert its effect, and to use it as a caking inhibiting component.

Other components The composition (L) may contain components (other components) other than the above-described components (A) to (E) as necessary, as long as the effects of the present invention are not impaired. Other components include, but are not limited to, for example, refreshing agents such as l-menthol, camphor, and mint oil; antiperspirant components such as zinc p-phenolsulfonate and chlorohydroxyaluminum; surfactants, fats and oils, hydrocarbons Oils, waxes, higher fatty acids, fatty acid ester oils other than the above component (B), lower alcohols other than ethanol, polyhydric alcohols, sterols, humectants, inorganic pigments, dyes, antioxidants, ultraviolet absorbers, vitamins , Astringents, whitening agents, animal and plant extracts, sequestering agents and the like.

  The composition (L) is a deodorant or a refreshing cosmetic. The composition may have a function of both a deodorant agent and a refreshing cosmetic. The deodorant agent is a deodorant composition for the human body and the like. Moreover, the said cool cosmetics are cosmetics which apply | coat to a human body directly or indirectly, and give a refreshing feeling, for example. In this specification, “cosmetics” is not limited to “cosmetics” in the Pharmaceutical Affairs Law, and may be any of cosmetics, quasi-drugs, pharmaceuticals, and miscellaneous goods, for example.

  The pH of the composition (L) is not particularly limited, but is preferably 3.0 to 6.0, for example, and more preferably 3.5 to 5.5 at 25 ° C. from the viewpoint of further improving the caking inhibiting property.

  The composition (L) can be produced by a conventional method. For example, the above-mentioned constituent components are mixed and a known method, specifically, a method of stirring with a homomixer or the like can be mentioned.

  The container in the non-aerosol spray product of the present invention, that is, the container filled with the composition (L) is a non-aerosol type spray container. From the viewpoint that the component (A) can effectively solve the problem of clogging that has existed conventionally, the effects of the present invention are particularly remarkably exhibited when filled in a non-aerosol spray container.

Non-aerosol spray product of the present invention The non-aerosol spray product of the present invention can be obtained by filling the non-aerosol spray container with the composition (L). That is, the non-aerosol spray product of the present invention comprises at least a non-aerosol spray container and the composition (L) filled in the spray container.

  Examples of the non-aerosol spray container include known and commonly used containers, and are not particularly limited, and examples thereof include pump-type and trigger-type spray containers. Although not particularly limited, an accumulator spray container is preferable. That is, the non-aerosol spray product of the present invention is preferably a pressure-accumulating non-aerosol spray product.

  Since the flow path inside the non-aerosol spray container is thin, clogging is likely to occur, and it is difficult to eliminate clogging once generated due to manual operation. However, since the composition (L) uses the component (A) as a powder, clogging hardly occurs.

  EXAMPLES Hereinafter, although this invention is demonstrated further in detail based on an Example, this invention is not limited only to these Examples. The blending amount (content) represents “% by mass” unless otherwise specified. Moreover, all the compounding components were converted into pure components and the compounding amounts were described.

[Preliminary experiment on prevention of clogging of spray]
For each of the commercially available particles (polyurethane particles, silicone particles, nylon particles, and polystyrene particles) listed in Table 1, the compressive strength and average particle diameter at 5% displacement were measured. Table 1 shows the compressive strength and average particle diameter of each particle.

(Compressive strength at 5% displacement)
The measurement of the compressive strength at 5% displacement was performed as follows.
Test apparatus: manufactured by Shimadzu Corporation, micro compression tester MCT-510 + length measurement kit Type of test: compression test Test force: 3 mN (nylon particles), 4 mN (silicone particles, polyurethane particles and polystyrene particles)
Load speed: 0.0045 mN / sec
Upper pressure indenter: Flat surface φ50μm
Test method: A very small amount of sample is sprayed on the lower pressure plate and compressed one particle at a time N number: 5

The test force at the time of 5% displacement of the particles is read from the test force-displacement graph obtained by the above apparatus and experimental conditions, and then the compressive strength is calculated from the equation of Hiramatsu et al. The average value of the compressive strength obtained for the 5 particles was defined as “compressive strength at 5% displacement”.
Compressive strength = 2.8 x test force / (π · particle diameter ^ 2)
(Reference: Hiramatsu, Oka, Kiyama: Journal of the Japan Mining Association, vol.81 (1965))

(Average particle size)
The “average particle diameter” of the above particles is a value obtained by observing the particles with a microscope, randomly selecting 10 particles that do not overlap with each other, measuring the particle diameter, and calculating the average of them.

(Clogging deterrence)
According to the composition described in Table 1, compositions A to D were prepared by a conventional method.

  A spray product was prepared by filling 170 ml of each composition into a commercially available trigger type spray container (non-aerosol, discharge port diameter φ0.4 mm, capacity 200 ml) and subjected to the following evaluation. In addition, 10 spray products were produced for each composition.

Each spray product was continuously sprayed and evaluated for clogging.
For each composition, 10 spray products were evaluated, and the number of clogged 10 was shown in Table 1.

  As shown in Table 1, particles (silicone particles, polyurethane particles) having a compressive strength and an average particle size in the range of the present invention had excellent clogging deterrence.

Examples 1 to 8 and Comparative Examples 1 and 2
According to the composition described in Table 2, each composition of Examples 1-8 and Comparative Examples 1 and 2 was prepared by a conventional method and subjected to the following evaluation. In addition, pH at 25 degreeC of each composition of these Examples was the range of 4-5.5.

[Evaluation]
(1) Smooth feeling, no stickiness Each composition prepared in Examples 1 to 8 and Comparative Examples 1 and 2 was placed in a dispenser container and sprayed twice (about 0.25 ml) on the inner side of the forearm. It was applied, and the smoothness after application and the absence of stickiness were evaluated. Based on the composition prepared in Comparative Example 1, each of the compositions prepared in Examples 1 to 4 was evaluated for the dry feeling and non-stickiness. Further, with respect to the composition prepared in Comparative Example 2, the dry feeling and non-stickiness of each of the compositions prepared in Examples 5 to 8 were evaluated. The evaluation test was carried out by five professional evaluators in a room at a temperature of 23 ° C.

  As a result, as shown in Table 2, each of the compositions prepared in Examples was superior to the compositions prepared in Comparative Examples in both smooth feeling and non-stickiness.

The details of each component in Table 2 are as follows.
Silicone particles (Shin-Etsu Chemical Co., Ltd., trade name: CA powder)
Polyurethane particles (Toyo Pigment Co., Ltd., trade name: PLASTIC POWDER D-800 2.0)
Carboxyvinyl polymer 1 (Nippon Lubrizol Corporation, trade name: Carbopol 940)
Carboxyvinyl polymer 2 (Nippon Lubrizol Corporation, trade name: Carbopol 941)
Carboxy vinyl polymer 3 (Wako Pure Chemical Industries, Ltd., trade name: Hibiswako 105)

(2) Particle dispersibility 170 ml of the composition prepared in the above Examples 1 to 8 was filled into a cylindrical polypropylene (PP) container (capacity 200 ml). Thereafter, the container was sufficiently shaken in an environment of 23 ° C., the dispersion state of the powder in the container immediately after shaking was visually confirmed, and evaluated according to the following evaluation criteria.

<Evaluation criteria for particle dispersibility>
A (excellent): It is finely dispersed uniformly by shaking, and no aggregate is formed.
○ (Good): After uniformly dispersing by shaking, a mixed system of weak aggregates and fine dispersion is formed.
Δ (insufficient): Disperses uniformly by shaking, but forms clear aggregates.
X (defect): Even if shaken, it cannot disperse | distribute uniformly and a powder settles immediately after shaking.

  As a result, all the compositions described in Examples 1 to 8 were evaluated as ◯ to ◎, and it was found that the particle dispersibility was good or excellent.

(3) Caking inhibition property After filling 170 ml of the composition prepared in Examples 1 to 3 and 5 to 8 into a cylindrical polypropylene (PP) container (capacity: 200 ml), it was allowed to stand in an environment of 23 ° C. for 24 hours. did. Thereafter, the container was shaken at a speed of about 3 reciprocations / second. As a result, all of the above compositions were dispersed so that no powder remained on the bottom of the container by 1 to 10 reciprocating shakes, and exhibited excellent caking deterrence.

(4) Quick-drying The compositions prepared in Examples 1 to 8 were put into a dispenser container, sprayed once on the inner side of the forearm (about 0.1 ml), and the drying rate was examined.
As a result, it was found that the compositions prepared in Examples 1 to 8 were dried within 1 minute to the extent that they did not feel wet when touched, and showed excellent quick drying properties.

  Hereinafter, formulation examples of the deodorant and the refreshing cosmetic according to the present invention will be shown. In addition, content is mass%. As the carboxyvinyl polymer, the above-mentioned trade name: Carbopol 941 was used.

(Prescription Example 1: Deodorant)
A deodorant agent was prepared according to the formulation shown in Table 3 below, and the obtained deodorant agent was filled in a non-aerosol spray container having a diameter of 0.4 mm to produce a non-aerosol spray product.

(Formulation example 2: Cool cosmetics)
A refreshing cosmetic was prepared according to the formulation shown in Table 3 below, and the obtained refreshing cosmetic was filled in a non-aerosol spray container having a diameter of 0.4 mm to produce a non-aerosol spray product.

  Both of the above-mentioned prescription examples 1 and 2 could be injected without causing clogging of the injection port.

  The non-aerosol spray product of the present invention can be used as a deodorant or a refreshing cosmetic, for example, as a cosmetic for the purpose of reducing skin stickiness and discomfort due to sweat.

Claims (3)

A non-aerosol spray product comprising a non-aerosol spray container and a composition filled in the spray container,
The composition is a deodorant or a refreshing cosmetic,
Component (A): particles having a compressive strength at 5% displacement of 0.1 kgf / mm ² or less and an average particle size of 12 μm or less,
Component (B): an ester oil selected from the group consisting of diisopropyl adipate, diisobutyl adipate and diisopropyl sebacate ,
Component (C): ethanol, and component (D): water,
Content of the said component (A) in the said composition 100 mass% is 0.05-2.0 mass%, and content of the said component (C) in the said composition 100 mass% is 30.0- A non-aerosol spray product, wherein the content of the component (D) in the composition is 70.0% by mass, and the content of the component (D) is 20.0-69.0% by mass. Further, component (E): carboxy containing vinyl polymer and / or alkyl-modified carboxyvinyl polymers, non-aerosol spray product according to claim 1. The non-aerosol spray product according to claim 2 , wherein the content of the component (E) in 100% by mass of the composition is 0.0001 to 0.008% by mass.