WO2019176265A1 - Antiperspirant composition, and antiperspirant - Google Patents

Abstract

Provided is an antiperspirant composition having an excellent antiperspiration effect, and an excellent prolonged body-odor prevention effect. An antiperspirant composition according to the present invention contains: an ethanol (component A); an antiperspirant component (component B); a hydrophobized hydroxyalkyl cellulose (component C); a film-forming polymer (component D) selected from the group consisting of an acrylic acid type film-forming polymer (component D1) and a nonionic film-forming polymer (component D2); and water (component E).

Description

Antiperspirant composition and antiperspirant

The present invention relates to an antiperspirant composition comprising an antiperspirant component. The present invention also relates to an antiperspirant in which a container is filled with the antiperspirant composition.

Body odor such as scent is caused by the mixture of sweat and sebum, which are decomposed by skin resident bacteria. Therefore, in order to prevent body odor, it is effective to suppress perspiration that causes odors, and antiperspirant compositions containing various antiperspirant components are used.

The antiperspirant composition is filled in a container and used as an antiperspirant. The above antiperspirants are used in various types such as gels, creams, lotions, aerosol sprays, roll-ons, mists and sticks.

Among them, since the roll-on type antiperspirant can apply the antiperspirant composition directly and uniformly to the application target site without applying the antiperspirant composition to the application target site, Excellent usability. In addition, the roll-on type antiperspirant has a higher adhesion to the skin of the contents than the aerosol type antiperspirant, and the effect of preventing body odor tends to be sustained.

As an example of the antiperspirant composition, the following Patent Document 1 contains (A) an antiperspirant component and (B-1) a specific acrylic acid-based anionic polymer. A deodorant composition having a mass ratio of component B-1) of 0.02 to 5 is disclosed. Moreover, in the Example of the following patent document 1, hydrophilic hydroxypropyl cellulose is simply used as a thickener.

Patent Document 2 listed below includes (A) an antiperspirant component, (B) an anionic polymer, (C) a nonionic surfactant having an average added mole number of ethylene oxide (EO) of 5 mol or more, and ( D) Antiperspirant containing ethanol, wherein the mass ratio of the content of component (C) to the total content of component (A) and component (B) is 0.03 to 0.7 An agent composition is disclosed.

WO2013 / 081055A1 JP2015-117239A

In the conventional antiperspirant compositions as described in Patent Documents 1 and 2, the antiperspirant effect may not be sufficient, and the body odor prevention effect may be reduced.

An object of the present invention is to provide an antiperspirant composition which is excellent in antiperspirant effect and excellent in durability of body odor prevention effect.

The present invention provides a component (D) which is a film-forming polymer selected from the group consisting of the following component (A), the following component (B), the following component (C), the following component (D1) and the following component (D2). And an antiperspirant composition comprising the following component (E).

Ingredient (A): Ethanol

Ingredient (B): Antiperspirant ingredient

Component (C): Hydrophobized hydroxyalkyl cellulose

Component (D1): Acrylic acid type film-forming polymer

Component (D2): Nonionic film-forming polymer

Ingredient (E): Water

In the antiperspirant composition of this invention, it is preferable that the said component (D1) is included as said component (D).

In the antiperspirant composition of the present invention, the component (D1) preferably contains the following component (D1 ′).

Component (D1 ′): alkyl acrylate copolymer, (octylacrylamide / hydroxypropyl acrylate / butylaminoethyl methacrylate) copolymer, (alkyl acrylate / octylacrylamide) copolymer, (acrylates / alkyl acrylate (C1-18) / Acrylic acid type film-forming polymer selected from the group consisting of alkyl (C1-8) acrylamide) copolymers and salts thereof

In the antiperspirant composition of the present invention, the content of the component (C) is 0.4% by mass or more and 1.5% by mass or less, and the component (D1) with respect to the content of the component (C) The mass ratio of the content is preferably 0.1 or more and less than 0.6.

The antiperspirant composition of the present invention preferably does not contain a nonionic surfactant or contains a nonionic surfactant at less than 0.1% by mass.

In the antiperspirant composition of this invention, it is preferable that the said component (D2) is included as said component (D).

In the antiperspirant composition of the present invention, the component (D2) preferably contains the following component (D2 ′).

Component (D2 ′): Nonionic film-forming polymer selected from the group consisting of vinyl acetate / vinyl pyrrolidone copolymer and (vinyl pyrrolidone / methacrylamide / vinyl imidazole) copolymer

The antiperspirant composition of the present invention preferably contains the following component (F).

Ingredient (F): Fatty acid ester oil

In the antiperspirant composition of this invention, it is preferable that content of the said component (F) is 0.01 mass% or more and 2.0 mass% or less.

In the antiperspirant composition of the present invention, the component (F) preferably contains the following component (F ′).

Component (F ′): fatty acid ester oil selected from the group consisting of isopropyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-ethylhexyl stearate, 2-octyldodecyl myristate, and glyceryl tri-2-ethylhexanoate

The present invention also provides an antiperspirant comprising a container and the antiperspirant composition described above, wherein the container is filled with the antiperspirant composition.

In the antiperspirant of the present invention, the container is preferably a roll-on container.

Since the antiperspirant composition of the present invention contains the specific component (A), component (B), component (C), component (D), and component (E), it is excellent in antiperspirant effect and has a body odor preventing effect. Excellent durability.

Hereinafter, the present invention will be described in detail.

The antiperspirant composition of the present invention comprises ethanol, an antiperspirant component, a hydrophobized hydroxyalkyl cellulose, a film-forming polymer selected from the group consisting of an acrylic acid-type film-forming polymer and a nonionic film-forming polymer, and water. At least.

In the present specification, the “ethanol” may be referred to as “component (A)”.

In the present specification, the “antiperspirant component” may be referred to as “component (B)”.

In the present specification, the “hydrophobized hydroxyalkyl cellulose” is sometimes referred to as “component (C)”.

In the present specification, the “acrylic acid type film-forming polymer” may be referred to as “component (D1)”.

In the present specification, the “nonionic film-forming polymer” may be referred to as “component (D2)”.

In the present specification, the “film-forming polymer selected from the group consisting of an acrylic acid-type film-forming polymer and a nonionic film-forming polymer” may be referred to as “component (D)”. That is, in this specification, “a film-forming polymer selected from the group consisting of component (D1) and component (D2)” may be referred to as “component (D)”.

In the present specification, the “water” may be referred to as “component (E)”.

The antiperspirant composition of this invention contains a component (A), a component (B), a component (C), a component (D), and a component (E).

The antiperspirant composition of the present invention may be an antiperspirant composition comprising a component (A), a component (B), a component (C), a component (D1), and a component (E). Good. The antiperspirant composition of the present invention may be an antiperspirant composition comprising a component (A), a component (B), a component (C), a component (D2), and a component (E). Good.

Since the antiperspirant composition of the present invention has the above-described configuration, it is excellent in antiperspirant effect and excellent in sustainability of body odor prevention effect.

The antiperspirant composition of the present invention can suppress discomfort during and after application, and is excellent in adhesion to the skin after application. In the antiperspirant composition of the present invention, it is possible to suppress discomfort during and after application such as dripping from the skin at the time of application or feeling of stickiness or firmness after application. Moreover, the antiperspirant composition of the present invention is unlikely to flow down due to sweat or the like, and the antiperspirant composition is easily retained on the skin. For this reason, in the antiperspirant composition of this invention, the body odor prevention effect excellent in sustainability is exhibited. In particular, when the antiperspirant composition of the present invention contains the component (D1), the antiperspirant composition is more unlikely to flow down due to sweat or the like, and the antiperspirant composition is more easily retained on the skin.

The antiperspirant composition of the present invention is also excellent in property stability. The antiperspirant composition of the present invention can suppress white turbidity and phase separation after preparation and during storage. In particular, when the antiperspirant composition of the present invention contains the component (D2), the antiperspirant effect and the body odor preventing effect are excellent, and the property stability can be further enhanced.

The antiperspirant composition of the present invention may contain a fatty acid ester oil.

In the present specification, the “fatty acid ester oil” may be referred to as “component (F)”.

As described above, the antiperspirant composition of the present invention includes at least the component (A), the component (B), the component (C), the component (D), and the component (E). The antiperspirant composition of the present invention may contain a component (F).

The antiperspirant composition of the present invention may contain components other than components (A) to (F).

Only one type of each of the above components, for example, the component (A), the component (B), the component (C), the component (D), the component (E), the component (F), and the like is used. Two or more kinds may be used.

Hereinafter, the detail of each component used for the antiperspirant composition of this invention is demonstrated.

(Ingredient (A))

Component (A) is ethanol. Ingredient (A) enhances quick-drying, suppresses discomfort during and after application, such as dripping from the skin during application, feeling sticky after application, and feeling of skin tension, etc. Can do. Moreover, the plastic effect of suppressing that the film | membrane formed with a component (D) becomes hard too much with a component (A) is exhibited.

In 100% by mass of the antiperspirant composition of the present invention, the content of the component (A) is preferably 50.0% by mass or more, more preferably 60.0% by mass or more, preferably 90.0% by mass or less. More preferably, it is 80.0 mass% or less. When the content of the component (A) is not less than the above lower limit and not more than the above upper limit, quick-drying can be further enhanced, and discomfort during and after coating can be further suppressed, and formed by the component (D) Can be formed satisfactorily.

(Ingredient (B))

Component (B) is an antiperspirant component. With the component (B), it is possible to suppress the generation of sweat, for example, by causing the skin to converge.

A conventionally well-known antiperspirant component can be used as a component (B). As for a component (B), only 1 type may be used and 2 or more types may be used together.

Examples of the component (B) include aluminum salts and zinc paraphenol sulfonate.

Examples of the aluminum salt include aluminum chloride, aluminum sulfate, potassium aluminum sulfate (potassium alum), aluminum ammonium sulfate (ammonium alum), aluminum acetate, chlorohydroxyaluminum, and allantoinchlorohydroxyaluminum.

From the viewpoint of further enhancing the antiperspirant effect, the component (B) is preferably an antiperspirant component selected from the group consisting of an aluminum salt and zinc paraphenolsulfonate, such as chlorohydroxyaluminum, alum, and paraphenol. An antiperspirant component selected from the group consisting of zinc sulfonate is more preferable, and an antiperspirant component selected from the group consisting of chlorohydroxyaluminum, potassium aluminum sulfate, and zinc paraphenolsulfonate is more preferable.

In 100% by mass of the antiperspirant composition of the present invention, the content of the component (B) is preferably 1.0% by mass or more, more preferably 3.0% by mass or more, preferably 25.0% by mass or less. More preferably, it is 20.0 mass% or less, More preferably, it is 15.0 mass% or less. When the content of the component (B) is not less than the above lower limit and not more than the above upper limit, the antiperspirant effect can be effectively enhanced.

(Ingredient (C))

Component (C) is a hydrophobized hydroxyalkyl cellulose. The hydrophobized hydroxyalkyl cellulose is a hydrophobized product of hydroxyalkyl cellulose. Component (C) is a thickener. Component (C) can suppress discomfort during and after application, such as dripping from the skin during application, feeling sticky after application, or feeling of skin tightness after application. In addition, the antiperspirant effect and adhesion to the skin can be enhanced by the component (C), the antiperspirant composition is less likely to flow off due to sweat and the like, and the antiperspirant composition can be favorably retained on the skin. it can. Therefore, the body odor prevention effect excellent in sustainability can be exhibited. In addition, the component (C) can suppress dripping at the time of application, and can improve dischargeability from the container and applicability.

The component (C) is not particularly limited, and conventionally known hydrophobized hydroxyalkyl cellulose can be used. Examples of the component (C) include hydrophobized hydroxypropylmethylcellulose and hydrophobized hydroxyethylcellulose. As for a component (C), only 1 type may be used and 2 or more types may be used together.

The component (C) usually has an alkyl group (an alkyl group that imparts hydrophobicity) for hydrophobicity. Component (C) is preferably a hydrophobized hydroxyalkyl cellulose in which an alkyl group is bonded to hydroxyalkyl cellulose. The hydrophobized hydroxypropylmethylcellulose is preferably a hydrophobized hydroxyalkylcellulose in which an alkyl group is bonded to hydroxypropylmethylcellulose. The hydrophobic hydroxyethyl cellulose is preferably a hydrophobic hydroxyalkyl cellulose in which an alkyl group is bonded to hydroxyethyl cellulose.

The alkyl group imparting hydrophobicity may be linear or branched. Since the hydrophobicity is high, the alkyl group imparting hydrophobicity is preferably a long-chain alkyl group. The number of carbon atoms of the alkyl group imparting hydrophobicity is not particularly limited, but is preferably 12 or more, and preferably 22 or less. Moreover, it is preferable that carbon number of the linear part of the alkyl group which provides the said hydrophobicity is 12 or more. Since the hydrophobicity is high, the component (C) is preferably a hydrophobized hydroxyalkyl cellulose in which an alkyl group having 12 or more carbon atoms (an alkyl group that imparts hydrophobicity) is bonded to the hydroxyalkyl cellulose.

Examples of the alkyl group imparting hydrophobicity include dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl, heicosyl, and docosyl groups.

Component (C) preferably has an alkoxy group. Component (C) is preferably an alkoxyhydroxyalkyl cellulose. The hydrophobized hydroxypropylmethylcellulose is preferably alkoxyhydroxypropylmethylcellulose.

The alkyl group in the alkoxy group may be linear or branched. Although carbon number of the said alkoxy group is not specifically limited, Preferably it is 12 or more, Preferably it is 22 or less. Moreover, it is preferable that carbon number of the linear part of the said alkoxy group is 12 or more.

Examples of the alkoxy group include dodecyloxy group (lauroxy group), tridecyloxy group, tetradecyloxy group (myristyloxy group), pentadecyloxy group, hexadecyloxy group (cetyloxy group), heptadecyloxy group, octadecyloxy group (stearoxy group). Group), nonadecyloxy group, eicosyloxy group, heneicosyloxy group, docosyloxy group and the like.

Examples of the component (C) include dodecyloxyhydroxyalkylcellulose (lauroxyhydroxyalkylcellulose), tridecyloxyhydroxyalkylcellulose, tetradecyloxyhydroxyalkylcellulose (myristyloxyhydroxyalkylcellulose), and pentadecyloxyhydroxyalkylcellulose. , Hexadecyloxyhydroxyalkylcellulose (cetyloxyhydroxyalkylcellulose), heptadecyloxyhydroxyalkylcellulose, octadecyloxyhydroxyalkylcellulose (stearoxyhydroxyalkylcellulose), octadecyloxyhydroxypropylmethylcellulose (stearoxyhydroxypropylmethylcellulose), Nonadecyloxyhydroxyalkyl cellulose, D Co-siloxy-hydroxy alkyl celluloses, Heng Eiko siloxy hydroxyalkyl cellulose, and docosyl siloxy hydroxyalkyl cellulose.

From the viewpoint of further enhancing the sustainability of the body odor prevention effect, the component (C) is preferably octadecyloxyhydroxyalkylcellulose (stearoxyhydroxyalkylcellulose), and octadecyloxyhydroxypropylmethylcellulose (stearoxyhydroxypropyl). Methyl cellulose) is more preferable.

Commercially available components (C) include stearoxy hydroxypropyl methylcellulose, manufactured by Daido Kasei Kogyo Co., Ltd., trade name “Sangelose 60L”, trade name “Sangelose 60M”, trade name “Sangelose 90L”, and trade name. “Sangelose 90M” and the like.

In 100% by mass of the antiperspirant composition of the present invention, the content of the component (C) is preferably 0.4% by mass or more, more preferably 0.7% by mass or more, preferably 1.5% by mass or less. More preferably, it is 1.3 mass% or less. When the content of the component (C) is at least the above lower limit, the antiperspirant effect and adhesion to the skin can be further enhanced, and the sustainability of the body odor preventing effect can be further enhanced. When the content of the component (C) is not more than the above upper limit, dripping at the time of application is further suppressed, and the dischargeability from the container and the applicability are further improved. Further, when the content of the component (C) is not less than the above lower limit and not more than the above upper limit, discomfort at the time of application and after application can be further suppressed, and generation of aggregates is suppressed after application and after drying. be able to.

(Component (D))

Component (D) is a film-forming polymer selected from the group consisting of an acrylic acid-type film-forming polymer (component (D1)) and a nonionic film-forming polymer (component (D2)). Component (D) may be component (D1), component (D2), or both component (D1) and component (D2). With component (D), the antiperspirant effect can be enhanced and the body odor preventing effect excellent in sustainability can be exhibited. As for a component (D), a component (D1), and a component (D2), only 1 type may respectively be used and 2 or more types may be used together.

From the viewpoint of further suppressing discomfort during and after application, the adhesion to the skin is further improved, the antiperspirant composition is more difficult to flow off due to sweat, etc., and the antiperspirant composition is better on the skin From the viewpoint of retaining, the hairdressing composition of the present invention preferably contains the component (D1) as the component (D).

Examples of the component (D1) include alkyl acrylate copolymers, (octyl acrylamide / hydroxypropyl acrylate / butyl aminoethyl methacrylate) copolymers, (alkyl acrylate / octyl acrylamide) copolymers, (acrylates / alkyl acrylate (C1- 18) / alkyl (C1-8) acrylamide) copolymer, (alkyl acrylate / diacetone acrylamide) copolymer, (methacryloyloxyethylcarboxybetaine / alkyl methacrylate) copolymer, and salts thereof.

Examples of the salts constituting these salts include 2-amino-2-methyl-1-propanol (AMP), 2-amino-2-methyl-1,3-propanol (AMPD), sodium (Na ), And ammonium.

Examples of these salts include alkyl acrylate copolymer AMP, alkyl acrylate copolymer Na, alkyl acrylate copolymer ammonium, (acrylates / alkyl acrylate (C1-18) / alkyl (C1-8) acrylamide) copolymer AMP, (Alkyl acrylate / diacetone acrylamide) copolymer AMP, and (alkyl acrylate / diacetone acrylamide) copolymer AMPD.

Component (D1) is preferably a film-forming polymer obtained using (meth) acrylic acid alkyl ester as an essential monomer component. The film-forming polymer obtained using (meth) acrylic acid alkyl ester as an essential monomer component is an acrylic acid-type film-forming polymer.

From the viewpoint of further enhancing the adhesion to the skin and further enhancing the sustainability of the body odor prevention effect, the component (D1) is an anionic property obtained using (meth) acrylic acid alkyl ester as an essential monomer component. A film-forming polymer is more preferable.

From the viewpoint of further enhancing the adhesion to the skin and further enhancing the sustainability of the body odor prevention effect, the component (D1) is an alkyl acrylate copolymer (octylacrylamide / hydroxypropyl acrylate / butylaminoethyl methacrylate). Acrylic acid type film-forming polymer selected from the group consisting of copolymers, (alkyl acrylate / octyl acrylamide) copolymers, (acrylates / alkyl acrylate (C1-18) / alkyl (C1-8) acrylamide) copolymers, and salts thereof (At least one acrylic acid type film-forming polymer) is preferably included.

In the present specification, the above-mentioned “alkyl acrylate copolymer, (octylacrylamide / hydroxypropyl acrylate / butylaminoethyl methacrylate) copolymer, (alkyl acrylate / octylacrylamide) copolymer, (acrylates / alkyl acrylate (C1-18) ) / Alkyl (C1-8) acrylamide) copolymer and an acrylic acid type film-forming polymer selected from the group consisting of these salts may be referred to as “component (D1 ′)”. Therefore, it is preferable that a component (D1) contains a component (D1 '). It is preferable that the antiperspirant composition of this invention contains a component (D1 '). Component (D1 ′) is a film-forming polymer obtained using (meth) acrylic acid alkyl ester as an essential monomer component.

As for a component (D1 '), only 1 type may be used and 2 or more types may be used together.

From the viewpoint of further enhancing the sustainability of the antiperspirant effect and the body odor prevention effect and further enhancing the stability of the properties, the hairdressing composition of the present invention contains the component (D2) as the component (D). Is preferred.

Examples of the component (D2) include vinyl acetate / vinyl pyrrolidone copolymer ((vinyl pyrrolidone / VA) copolymer), polyvinyl pyrrolidone, vinyl methyl ether / ethyl maleate copolymer, (vinyl pyrrolidone / methacrylamide / vinyl imidazole). ) Copolymer and polyvinyl alcohol.

From the viewpoint of further enhancing the antiperspirant effect and further enhancing the durability of the body odor prevention effect, the component (D2) is composed of a vinyl acetate / vinyl pyrrolidone copolymer and a (vinyl pyrrolidone / methacrylamide / vinyl imidazole) copolymer. It is preferable to include a nonionic film-forming polymer (at least one nonionic film-forming polymer) selected from the group consisting of

In the present specification, the above “nonionic film-forming polymer selected from the group consisting of vinyl acetate / vinyl pyrrolidone copolymer and (vinyl pyrrolidone / methacrylamide / vinyl imidazole) copolymer” is referred to as “component (D2 ′)”. Sometimes called. Therefore, it is preferable that a component (D2) contains a component (D2 '). It is preferable that the antiperspirant composition of this invention contains a component (D2 ').

As for a component (D2 '), only 1 type may be used and 2 or more types may be used together.

In 100% by mass of the antiperspirant composition of the present invention, the content of the component (D) is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, and further preferably 0.3% by mass or more. Preferably, it is 5.0 mass% or less, More preferably, it is 3.0 mass% or less, More preferably, it is 1.0 mass% or less, Most preferably, it is 0.8 mass% or less. When the content of the component (D) is not less than the above lower limit and not more than the above upper limit, the antiperspirant effect can be further enhanced and the sustainability of the body odor preventing effect can be further enhanced.

When the antiperspirant composition of the present invention contains the component (D1) as the component (D), the content of the component (D1) is preferably 0.05 in 100% by mass of the antiperspirant composition of the present invention. % By mass or more, more preferably 0.1% by mass or more, preferably 1.0% by mass or less, more preferably 0.8% by mass or less. When the content of the component (D1) is not less than the above lower limit and not more than the above upper limit, the adhesion to the skin can be further enhanced, and the sustainability of the body odor prevention effect can be further enhanced.

When the antiperspirant composition of the present invention contains the component (D2) as the component (D), the content of the component (D2) is preferably 0.1 in 100% by mass of the antiperspirant composition of the present invention. It is at least mass%, more preferably at least 0.3 mass%, preferably at most 5.0 mass%, more preferably at most 3.0 mass%. When the content of the component (D2) is not less than the above lower limit and not more than the above upper limit, the antiperspirant effect can be further enhanced and the sustainability of the body odor preventing effect can be further enhanced.

When the antiperspirant composition of the present invention contains the component (D1) as the component (D), the mass ratio of the content of the component (D1) to the content of the component (C) (content of the component (D1)) The amount / content of component (C)) is preferably 0.1 or more, preferably less than 0.6, more preferably less than 0.55. When the mass ratio (content of component (D1) / content of component (C)) is not less than the above lower limit, the adhesion to the skin can be further enhanced, and the durability of the body odor prevention effect can be further enhanced. Can be increased. Moreover, the discomfort at the time of application | coating and after application | coating can further be suppressed as the said mass ratio (content of a component (D1) / content of a component (C)) is less than the said upper limit.

(Ingredient (E))

Ingredient (E) is water. Component (E) serves as a medium for the antiperspirant composition of the present invention. Component (E) is preferably purified water. By the component (E), the combined effect of the component (C) and the component (D) can be effectively expressed.

In 100% by mass of the antiperspirant composition of the present invention, the content of the component (E) is preferably 5.0% by mass or more, more preferably 10.0% by mass or more, preferably 40.0% by mass or less. More preferably, it is 30.0 mass% or less. When the content of the component (E) is not less than the above lower limit and not more than the above upper limit, the combined effect of the component (C) and the component (D) can be expressed more effectively.

(Ingredient (F))

Component (F) is a fatty acid ester oil. By blending the component (F), the adhesion to the skin can be further enhanced, the antiperspirant composition is less likely to flow off due to sweat and the like, and the antiperspirant composition can be favorably retained on the skin. it can. Therefore, the body odor prevention effect excellent in sustainability can be exhibited. As for a component (F), only 1 type may be used and 2 or more types may be used together.

Examples of the component (F) include isononyl isononanoate, isopropyl myristate, isopropyl palmitate, diisopropyl adipate, diisobutyl adipate, 2-ethylhexyl palmitate, 2-ethylhexyl stearate, 2-octyldodecyl myristate, isostearic acid Examples thereof include propylene glycol, pentaerythrityl tetraoctanoate, pentaerythritol tetraisostearate, glyceryl tri-2-ethylhexanoate, propylene glycol myristate-3benzyl ether, and cetyl 2-ethylhexanoate.

From the viewpoint of further enhancing the adhesion to the skin and further enhancing the sustainability of the body odor prevention effect, the component (F) is composed of isopropyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-ethylhexyl stearate, It preferably contains a fatty acid ester oil (at least one fatty acid ester oil) selected from the group consisting of 2-octyldodecyl myristate and glyceryl tri-2-ethylhexanoate.

In the present specification, the above-mentioned “fatty acid selected from the group consisting of isopropyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-ethylhexyl stearate, 2-octyldodecyl myristate, and glyceryl tri-2-ethylhexanoate. The “ester oil” may be referred to as “component (F ′)”. That is, it is preferable that a component (F) contains a component (F ').

As for a component (F '), only 1 type may be used and 2 or more types may be used together.

In 100% by mass of the antiperspirant composition of the present invention, the content of the component (F) is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, preferably 2.0% by mass or less. More preferably, it is 1.0 mass% or less. When the content of the component (F) is at least the above lower limit, the adhesion to the skin can be further increased, and the sustainability of the body odor prevention effect can be further increased. Moreover, water content can be made favorable as content of a component (F) is below the said upper limit, and an antiperspirant effect can be improved further.

(Other ingredients)

The antiperspirant composition of the present invention may contain components other than components (A) to (F) as long as the effects of the present invention are not impaired. As the components other than the components (A) to (F), only one type may be used, or two or more types may be used in combination.

Examples of components other than the above components (A) to (F) include, for example, bactericides, surfactants, moisturizers, deodorants, silicone oil agents, sequestering agents, antiseptics, cooling agents, anti-inflammatory agents, plants Examples include extracts, powders, and fragrances.

Examples of the bactericides include isopropylmethylphenol, lysozyme chloride, hinokitiol, and salicylic acid.

Examples of the refreshing agent include menthol, camphor, and menthyl glyceryl ether.

The antiperspirant composition of the present invention may or may not contain a nonionic surfactant. The nonionic surfactant is different from the component (D2).

From the viewpoint of further enhancing the antiperspirant effect and adhesion to the skin, and further enhancing the sustainability of the body odor preventing effect, the antiperspirant composition of the present invention contains the component (D1) as the component (D), It is preferable not to contain a nonionic surfactant or to contain a nonionic surfactant at less than 0.1% by mass. When the antiperspirant composition of the present invention contains the component (D1) as the component (D) and contains a nonionic surfactant, the antiperspirant composition of the present invention contains 100% by mass of nonionic The content of the surfactant is preferably less than 0.05% by mass, more preferably less than 0.01% by mass. It is particularly preferable that the antiperspirant composition of the present invention contains the component (D1) as the component (D) and does not contain a nonionic surfactant.

(Other details of antiperspirant composition)

The viscosity at 25 ° C. of the antiperspirant composition of the present invention is preferably 10 mPa · s or more, more preferably 50 mPa · s or more, preferably 5000 mPa · s or less, more preferably 3000 mPa · s or less. When the viscosity is not less than the above lower limit and not more than the above upper limit, dripping at the time of application can be suppressed, and dischargeability from the container and applicability can be improved. Moreover, when the said viscosity is more than the said minimum and below the said upper limit, when the said antiperspirant composition is used as a roll-on type antiperspirant, applicability | paintability can be made favorable.

The viscosity is measured using a B-type viscometer, (1) using an L adapter, conditions of 25 ° C. and a rotational speed of 12 rpm, (2) rotor No. 2 at 25 ° C. and a rotational speed of 30 rpm, or (3) rotor no. 3 is measured under conditions of 25 ° C. and a rotation speed of 30 rpm. As the B-type viscometer, for example, a TV-25 type viscometer manufactured by Toki Sangyo Co., Ltd. can be used.

The antiperspirant composition of the present invention can be produced by a known and commonly used method for producing an antiperspirant composition. The antiperspirant composition of the present invention includes, for example, component (A), component (B), component (C), component (D), component (E), and other ingredients as necessary It can manufacture by mixing these components. As an example of a preferable production method, for example, after adding the component (E) to a mixed solution obtained by mixing the component (A), the component (C), and the component (D) with a disper mixer, the component (B ) And other components to be blended as necessary, and further a mixing and stirring method using a disper mixer or the like. In this production method, the addition timing of each component may be appropriately changed. Moreover, the addition time of said other component is suitably selected according to the kind of other component.

[Antiperspirant]

The antiperspirant of the present invention comprises a container and the above-described antiperspirant composition. In the antiperspirant, the container is filled with the antiperspirant composition. In the antiperspirant of the present invention, the container is preferably a roll-on container. The antiperspirant of the present invention is suitably used as a roll-on type antiperspirant.

The roll-on container includes a roll in the application unit. The roll may be a cylindrical member or a spherical member.

The roll-on type antiperspirant can directly and uniformly apply the antiperspirant composition to the application target site without applying the antiperspirant composition to the application target site such as skin. That is, the roll-on type antiperspirant is excellent in applicability. With the roll-on type antiperspirant, for example, the antiperspirant composition in the roll-on container can be directly applied directly to skin such as wrinkles.

The antiperspirant composition of the present invention is suitably used not only as the roll-on type antiperspirant described above but also as an antiperspirant such as a stick type, a sheet type, a gel type, a lotion type, and a spray type. be able to. In this case, the antiperspirant composition is filled into a container suitable for use as each type of antiperspirant.

Hereinafter, the relationship between the configuration of the present invention and the effects of the present invention will be described in more detail.

In the conventional antiperspirant composition which does not contain component (C), component (D), or both component (C) and component (D), the antiperspirant effect is not sufficient, or the antiperspirant is caused by sweat or the like. The effect of preventing body odor may decrease due to the composition flowing down or the like. Furthermore, when a hydrophilic thickener such as hydroxypropylcellulose is simply blended in the antiperspirant composition, the antiperspirant composition is likely to flow off due to sweat or the like, and the sustainability of the body odor prevention effect is increased. It is difficult.

On the other hand, since the component (C) and the component (D) are used in combination in the antiperspirant composition of the present invention, the antiperspirant effect can be enhanced. Moreover, in the antiperspirant composition of this invention, since the component (C) is mix | blended, the adhesiveness to skin can be improved. Therefore, the combined use of the component (C) and the component (D) can exhibit a body odor preventing effect that is excellent in antiperspirant effect and excellent in sustainability. The configuration in which the component (C) and the component (D) are used in combination is an important and technically significant configuration.

Furthermore, when the component (C) and the component (D1) are used in combination, a good film is formed on the applied portion, and appropriate hydrophobicity is imparted. As a result, the water resistance is enhanced, the flow of the antiperspirant composition due to sweat or the like can be more effectively suppressed, and the adhesion to the skin can be further enhanced. Furthermore, when the component (C) and the component (D1) are used in combination, it drips from the skin at the time of application, or feels sticky or firm after application, etc. Discomfort can be more effectively suppressed.

Hereinafter, the present invention will be specifically described with reference to Examples and Comparative Examples. The present invention is not limited only to the following examples.

In the examples and comparative examples, the following components were used.

(Ingredient (A))

ethanol

(Ingredient (B))

Chlorhydroxyaluminum

Zinc paraphenol sulfonate

(Ingredient (C))

Stearoxyhydroxypropyl methylcellulose (“Sangelose 60M” manufactured by Daido Kasei Kogyo Co., Ltd.)

(Component not corresponding to component (C))

Hydroxypropyl cellulose

(Component (D))

<Component (D1) (Component (D1 ′))>

Alkyl acrylate copolymer AMP (Osaka Organic Chemical Co., Ltd. “Aniset HPA40”)

(Octylacrylamide / hydroxypropyl acrylate / butylaminoethyl methacrylate) copolymer (“AMPHOMER 28-4910” manufactured by Akzo Nobel)

(Alkyl acrylate / octylacrylamide) copolymer (AkzoNobel "AMPHOMER HC")

(Acrylates / alkyl acrylate (C1-18) / alkyl (C1-8) acrylamide) copolymer AMP (“Purasize L-9909U” manufactured by Kyoyo Chemical Co., Ltd.)

<Component (D2) (Component (D2 ′))>

Vinyl acetate / vinyl pyrrolidone copolymer (“PVA-6450” manufactured by Osaka Organic Chemical Industry Co., Ltd.)

(Vinylpyrrolidone / methacrylamide / vinylimidazole) copolymer (“LUVISE CLEARE” manufactured by BASF)

(Ingredient (E))

purified water

(Component (F) (Component (F ′)))

Isopropyl myristate

Isopropyl palmitate

2-ethylhexyl palmitate

2-ethylhexyl stearate

2-octyldodecyl myristate

Glyceryl tri-2-ethylhexanoate

(Other)

Isopropylmethylphenol

menthol

(Examples 1 to 21 and Comparative Examples 1 to 8)

The anti-perspirant compositions having the compositions shown in the following Tables 1 to 4 were prepared by blending the compounding ingredients shown in the following Tables 1 to 4 (the compounding unit is mass%). The obtained antiperspirant composition was filled into a roll-on container to produce an antiperspirant. The compounding amount in the table (the compounding amount in 100% by mass of the antiperspirant composition) is indicated by the compounding amount (unit: mass%) of the pure component.

(Evaluation)

The following test examples 1, 2, 4, and 5 were conducted by three evaluation panels, and the evaluation results were determined through discussion. Moreover, the following test example 3 was performed by three test subjects, and the average value of the results of the three subjects was used as the evaluation result. For the antiperspirant compositions and antiperspirants obtained in Examples 1 to 12 and Comparative Examples 1 to 4, the following Test Examples 1 to 4 were evaluated. For the antiperspirant compositions and antiperspirants obtained in Examples 13 to 21 and Comparative Examples 5 to 8, the following Test Examples 3 to 5 were evaluated.

(Test Example 1: Discomfort during and after application)

Using the obtained antiperspirant (roll-on type antiperspirant), the antiperspirant composition was directly applied to the armpits and dried. Sensory evaluation of the discomfort at the time of application and after application was performed according to the following criteria.

<Evaluation criteria for discomfort during and after application>

○ (Good): There is no dripping from the skin at the time of application, and there is no stickiness after application and no feeling of skin tightness.

△ (slightly good): There is no dripping from the skin at the time of application, but there is a slight stickiness after application and a feeling of skin tightness.

X (defect): There is no dripping from the skin at the time of application, or there is no dripping from the skin at the time of application, but there is a sticky feeling after application or a feeling of skin tightness

(Test Example 2: Adhesion to skin (water resistance))

On the skin of the inner side of the forearm, 40 μL of the obtained antiperspirant composition was applied in a 1 cm ² circular shape. Next, the antiperspirant composition was dried at room temperature (about 25 ° C.) for 5 minutes to form a film on the skin. Subsequently, running water of about 35 ° C. was allowed to flow over the skin on which the film was formed for 1 minute. The adhesion (water resistance) of the antiperspirant composition to the skin was visually evaluated according to the following criteria.

<Evaluation criteria for adhesion to skin (water resistance)>

○ (Good): Excellent adhesion to the skin (the water resistance (residence) of the film is good, and no film runs off)

Δ (slightly good): Slightly inferior in adhesion to the skin (slightly inferior in water resistance (remaining property) of the film, and slight film flow is observed)

X (Bad): Inferior to the skin (inferior to the water resistance (residual property) of the film, and all the film is washed away)

(Test Example 3: Antiperspirant effect)

Under an environment of temperature: about 30 ° C. and humidity: about 50%, 20 μL of the obtained antiperspirant composition was applied in a circular shape of 1 cm ² on the skin on the outer side of the forearm. Next, in the above environment, the lower limbs were warmed in warm water of about 42 ° C. to promote sweating. Next, using a sweat meter (device name: SKN-2000, manufactured by Nishizawa Denki Keiki Seisakusho Co., Ltd.), a place where the antiperspirant composition was applied during a period when the sweat rate was stable for 10 minutes (sample application part), And the average sweating amount (mg / min) of the part (sample non-application part) which has not applied the antiperspirant composition adjacent to this sample application part was measured. The sweat inhibition rate was calculated from the following formula. Antiperspirant effect was evaluated according to the following criteria.

Sweating suppression rate (%) = 100 − [(average sweating amount of sample application portion / average sweating amount of sample non-application portion) × 100]

<Evaluation criteria for antiperspirant effect>

○ (Good): Sweating suppression rate is 70% or more

Δ (slightly good): sweat inhibition rate of 40% or more and less than 70%

X (Bad): Sweating suppression rate is less than 40%

(Test Example 4: Persistence of body odor prevention effect)

Using the obtained antiperspirant (roll-on type antiperspirant), the antiperspirant composition was directly applied to the armpits and dried, and the body odor prevention effect immediately after application was sensorially evaluated. Subsequently, it was allowed to stand for 3 hours, and the body odor prevention effect after 3 hours of application was subjected to sensory evaluation. Sensory evaluation was carried out based on the following criteria for the sustainability of the body odor prevention effect.

<Evaluation criteria for sustainability of body odor prevention effect>

○ (Good): The body odor prevention effect 3 hours after application is equivalent to the body odor prevention effect immediately after application.

Δ (somewhat good): The body odor prevention effect after 3 hours of application is slightly inferior to the body odor prevention effect immediately after application.

X (Bad): The body odor prevention effect 3 hours after application is clearly inferior to the body odor prevention effect immediately after application.

(Test Example 5: Stability)

The properties of each antiperspirant composition immediately after preparation were visually observed. Thereafter, it was stored at 25 ° C. for 1 week. After storage, the properties of each antiperspirant composition were visually observed. Stability was evaluated according to the following criteria.

<Stability evaluation criteria>

○ (Good): Transparent immediately after preparation and after storage

Δ (slightly good): transparent immediately after preparation, but cloudy after storage

× (Bad): Immediately after preparation and after storage

(Test Example 5: Comprehensive judgment)

In Examples 1 to 12 and Comparative Examples 1 to 4, comprehensive judgment was made according to the following criteria from the judgment results of a total of four evaluation items of Test Examples 1 to 4. In Examples 13 to 21 and Comparative Examples 5 to 8, comprehensive judgment was judged according to the following criteria from the judgment results of the three evaluation items in Test Examples 3 to 5.

[Criteria for comprehensive judgment]

○○: Judgment of 3 or more evaluation items is ○

○: Judgment of two evaluation items is ○

△: Evaluation of one evaluation item is ○

×: There is no ○ in judgment of all evaluation items

The compositions and results are shown in Tables 1 to 4 below.

From the results of Tables 1 and 2, the antiperspirant composition of the present invention comprising component (A), component (B), component (C), component (D1) and component (E) is applied and after application. It can be seen that after application, the antiperspirant effect and the adhesion to the skin are excellent, and the body odor preventing effect is excellent. On the other hand, it can be seen that an antiperspirant composition lacking any one of the components (B) to (D) is inferior to the effect of the present invention compared to the antiperspirant composition of the present invention.

From the results of Tables 3 and 4, the antiperspirant composition of the present invention containing component (A), component (B), component (C), component (D2) and component (E) is excellent in stability, It can be seen that the antiperspirant effect is excellent and the body odor prevention effect is excellent in sustainability. On the other hand, it can be seen that an antiperspirant composition lacking any one of the components (B) to (D) is inferior to the effect of the present invention compared to the antiperspirant composition of the present invention.

Claims (12)

1. 
   An antiperspirant composition comprising the following component A, the following component B, the following component C, the component D which is a film-forming polymer selected from the group consisting of the following component D1 and the following component D2, and the following component E.
   
   Component A: Ethanol
   
   Component B: Antiperspirant component
   
   Component C: Hydrophobized hydroxyalkyl cellulose
   
   Component D1: Acrylic acid type film-forming polymer
   
   Component D2: Nonionic film-forming polymer
   
   Ingredient E: Water
   
2. 
   The antiperspirant composition according to claim 1, comprising the component D1 as the component D.
   
3. 
   The antiperspirant composition according to claim 2, wherein the component D1 includes the following component D1 ′.
   
   Component D1 ′: alkyl acrylate copolymer, (octyl acrylamide / hydroxypropyl acrylate / butyl aminoethyl methacrylate) copolymer, (alkyl acrylate / octyl acrylamide) copolymer, (acrylates / alkyl acrylate (C1-18) / alkyl ( C1-8) Acrylamide) copolymer, and acrylic acid type film-forming polymer selected from the group consisting of these salts
   
4. 
   The content of the component C is 0.4% by mass or more and 1.5% by mass or less,
   
   The antiperspirant composition according to claim 2 or 3, wherein a mass ratio of the content of the component D1 to the content of the component C is 0.1 or more and less than 0.6.
   
5. 
   The antiperspirant composition according to any one of claims 2 to 4, which does not contain a nonionic surfactant or contains a nonionic surfactant at less than 0.1% by mass.
   
6. 
   The antiperspirant composition according to claim 1, comprising the component D2 as the component D.
   
7. 
   The antiperspirant composition according to claim 6, wherein the component D2 includes the following component D2 ′.
   
   Component D2 ′: Nonionic film-forming polymer selected from the group consisting of vinyl acetate / vinyl pyrrolidone copolymer and (vinyl pyrrolidone / methacrylamide / vinyl imidazole) copolymer
   
8. 
   The antiperspirant composition according to any one of claims 1 to 7, comprising the following component F.
   
   Component F: fatty acid ester oil
   
9. 
   The antiperspirant composition according to claim 8, wherein the content of the component F is 0.01% by mass or more and 2.0% by mass or less.
   
10. 
    The antiperspirant composition according to claim 8 or 9, wherein the component F comprises the following component F '.
    
    Component F ′: fatty acid ester oil selected from the group consisting of isopropyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-ethylhexyl stearate, 2-octyldodecyl myristate, and glyceryl tri-2-ethylhexanoate
    
11. 
    A container,
    
    An antiperspirant composition according to any one of claims 1 to 10,
    
    An antiperspirant, wherein the container is filled with the antiperspirant composition.
    
12. 
    The antiperspirant according to claim 11, wherein the container is a roll-on container.