WO2013065486A1

WO2013065486A1 - Cosmetic composition

Info

Publication number: WO2013065486A1
Application number: PCT/JP2012/076832
Authority: WO
Inventors: 前原徹也; 坂西裕一
Original assignee: 株式会社ダイセル
Priority date: 2011-11-02
Filing date: 2012-10-17
Publication date: 2013-05-10
Also published as: WO2013065487A1

Abstract

This cosmetic composition contains a mono- or poly-glycerin alkyl or alkenyl ether (a1), and/or a mono or poly-glycerin fatty acid ester (a2), a silicone oil (b), and water (c), and is characterized in that the amount of water contained therein constitutes 80 wt% or more of the cosmetic composition. The mono- or poly-glycerin alkyl or alkenyl ether (a1) is preferably a mono- or poly-glycerin monoalkyl or alkenyl ether represented by formula (1). R₁O-(C₃H₆O₂)n₁-H (1). (In the formula, R₁ represents a C8-22 straight-chain or branched alkyl group or alkenyl group which may have a hydroxyl group. n₁ represents the average degree of polymerization of the glycerin, and is 1-10.)

Description

Cosmetic composition

The present invention relates to a lotion type cosmetic composition.

Conventionally, lotion-type cosmetic compositions (for example, cleansing lotions and the like) are mainly composed of water (usually about 70 to 90% by weight of the total amount of the cosmetic composition), an oily component, and a surfactant. A blend of ingredients was provided. However, in recent years, there is a tendency for consumers to dislike the stickiness peculiar to oil components. On the other hand, cleansing lotions are required to have excellent detergency that can be used for washing highly hydrophobic cosmetics such as waterproof mascara.

As a method of eliminating the stickiness of cosmetic compositions, cleansing lotions that do not contain oily ingredients that cause stickiness have been provided. A cleansing lotion that does not contain an oil component has no stickiness and a refreshing feeling of use, but the cleaning power is reduced. When the amount of the surfactant is increased in order to improve the detergency, not only the stickiness peculiar to the surfactant is generated, but also the skin irritation becomes strong and may cause inflammation. For this reason, it is difficult to combine detergency, usability, and safety.

On the other hand, silicone oil is easily adapted to cosmetics when applied to the skin surface, and has a characteristic characteristic of oily components that allows the cosmetics to quickly rise from the skin surface, but does not feel sticky like other oily components. Therefore, development of a cosmetic composition having a non-stickiness and an excellent detergency, in which silicone oil is blended as an oil component has been performed. However, since silicone oil is extremely difficult to solubilize in water and mixes with water, it has an opaque appearance and impairs aesthetics.Therefore, it has sufficient detergency for highly hydrophobic cosmetics such as waterproof mascara. It has been difficult to prepare a lotion-type cosmetic composition containing an amount of silicone oil that is sufficient to exhibit the above.

As a method for solubilizing silicone oil without increasing the amount of surfactant, a method using an alcohol such as ethanol as a solubilizing aid together with a surfactant is known (Patent Document 1). However, alcohols with high solubilizing power (for example, ethanol) are highly irritating, so they are not suitable for blending into cosmetics. ) Is not suitable for blending into cosmetics because it has the ability to inhibit self-assembly and makes it difficult to form micelles.

JP 2003-226617 A

Therefore, an object of the present invention is to provide a lotion-type transparent cosmetic composition having no stickiness, excellent usability, and excellent detergency.

As a result of intensive studies to solve the above problems, the present inventors have added hypoallergenic mono- or polyglycerin alkyl or alkenyl ether and / or mono- or polyglycerin fatty acid ester having a specific structure to the silicone oil. A low-irritant lotion-type cosmetic composition that can significantly improve the solubility of silicone oil in water, contains silicone oil, water, and the surfactant, and contains 80% by weight or more of the water. The cosmetic composition contains a silicone oil that does not have a sticky feeling peculiar to an oily component as an oily component, so that the cosmetic composition has a high hydrophobicity such as a waterproof mascara. Silicone with excellent detergency, no stickiness and excellent usability Yl is contained within a stable O / W type micelle by surfactant, it is highly dispersed to form a microemulsion in water, since the dispersion state is maintained, was found to have a transparent appearance. The present invention has been completed based on these findings.

That is, the present invention is a cosmetic composition containing mono- or polyglycerin alkyl or alkenyl ether (a1) and / or mono- or polyglycerin fatty acid ester (a2), silicone oil (b), and water (c). The cosmetic composition is characterized in that the water content is 80% by weight or more of the total amount of the cosmetic composition.

As the mono- or polyglycerin alkyl or alkenyl ether (a1), the following formula (1)
R ₁ O— (C ₃ H ₆ O ₂ ) n ₁ —H (1)
(In the formula, R ₁ represents a linear or branched alkyl group or alkenyl group having 8 to 22 carbon atoms which may have a hydroxyl group. N ₁ represents the average degree of polymerization of glycerin, 1 to 10)
The mono- or polyglycerin monoalkyl or alkenyl ether represented by the formula (1) is preferred, and the HLB value is preferably 8.0 to 12.0.

As said mono- or polyglycerin fatty acid ester (a2), following formula (2)
R ₂ C (═O) O— (C ₃ H ₆ O ₂ ) n ₂ —H (2)
(In the formula, R ₂ represents a linear or branched aliphatic hydrocarbon group having 8 to 22 carbon atoms which may have a hydroxyl group. N ₂ represents the average degree of polymerization of glycerin, 1 to 10)
And a compound having an HLB value of 9.0 to 15.0 is preferred.

When the mono- or polyglycerin fatty acid ester (a2) is not used, the content of the mono- or polyglycerin alkyl or alkenyl ether (a1), silicone oil (b), and water (c) relative to the total amount of the cosmetic composition is: The following range is preferable.
Mono- or polyglycerin alkyl or alkenyl ether (a1): 5.5% by weight or more and less than 9.0% by weight Silicone oil (b): 1.5% by weight or more and less than 5.0% by weight Water (c): 86 ~ 93% by weight

When the mono- or polyglycerin alkyl or alkenyl ether (a1) is not used, the content of the mono- or polyglycerin fatty acid ester (a2), silicone oil (b), and water (c) relative to the total amount of the cosmetic composition The following range is preferable.
Mono or polyglycerol fatty acid ester (a2): 1.0 to 10.0% by weight
Silicone oil (b): 1.0 to 10.0% by weight
Water (c): 80.0 to 98.0% by weight

When using mono or polyglycerol alkyl or alkenyl ether (a1) and mono or polyglycerol fatty acid ester (a2), mono or polyglycerol alkyl or alkenyl ether (a1), mono or polyglycerol fatty acid ester (a2), silicone oil, And as content with respect to the cosmetics composition whole quantity of water, it is preferable that it is the following range.
Mono- or polyglycerin alkyl or alkenyl ether (a1) and mono- or polyglycerin fatty acid ester (a2): 5.0% by weight or more and less than 10.0% by weight Silicone oil (b): 1.0% by weight or more, 6. Less than 0% by weight Water (c): 80.0% by weight or more

The cosmetic composition according to the present invention contains, as an oil component, a silicone oil that does not have a sticky feeling peculiar to an oil component, so that it is excellent for highly hydrophobic cosmetics such as a waterproof mascara. While having power, it has an excellent feeling of use without stickiness. Then, the silicone oil forms a stable micelle by the surface active action of hypoallergenic mono- or polyglyceryl alkyl or alkenyl ether and / or mono- or polyglycerin fatty acid ester, and is highly dispersed in water to form a microemulsion. Therefore, it has a transparent appearance and is excellent in safety. That is, the cosmetic composition according to the present invention can be suitably used as a cleansing lotion having an excellent appearance and an excellent detergency, safety and usability.

[Mono or polyglycerin alkyl or alkenyl ether (a1)]
The cosmetic composition of the present invention uses a mono- or polyglycerin alkyl or alkenyl ether (a1) and / or a mono- or polyglycerin fatty acid ester (a2) that is low in irritation and excellent in safety as a surfactant. Examples of the mono- or polyglycerin alkyl or alkenyl ether (a1) include monoglycerin monoalkyl or alkenyl ether, monoglycerin dialkyl or alkenyl ether, polyglycerin monoalkyl or alkenyl ether, and polyglycerin dialkyl or alkenyl ether. .

In the present invention, among them, mono- or polyglycerin monoalkyl or alkenyl ether represented by the following formula (1) is preferable in that it has excellent power (solubilization power) for solubilizing highly hydrophobic silicone oil in water. . In the formula (1), R ₁ represents a linear or branched alkyl group or alkenyl group having 8 to 22 carbon atoms which may have a hydroxyl group. n ₁ represents an average degree of polymerization of glycerin and is 1 to 10.
R ₁ O— (C ₃ H ₆ O ₂ ) n ₁ —H (1)

C ₃ H ₆ O ₂ in parentheses in the formula (1) has both structures represented by the following formulas (3) and (4).
—CH ₂ —CHOH—CH ₂ O— (3)
—CH (CH ₂ OH) CH ₂ O— (4)

In the formula (1), R ₁ represents a linear or branched alkyl group or alkenyl group having 8 to 22 carbon atoms which may have a hydroxyl group. Examples of the linear alkyl group having 8 to 22 carbon atoms include n-octyl, n-nonyl, n-decyl, n-undecyl, n-lauryl, n-tridecyl, n-tetradecyl, n-pentadecyl, n- Examples include palmityl, n-heptadecyl, n-stearyl, n-nonadecyl, n-eicosyl, n-heneicosyl, n-docosyl group and the like. Examples of the linear alkenyl group having 8 to 22 carbon atoms include n-octenyl, n-nonenyl, n-decenyl, n-undecenyl, n-dodecenyl, n-tridecenyl, n-tetradecenyl, n-pentadecenyl, n- Examples include hexadecenyl, n-heptadecenyl, n-eylidyl, n-oleyl, n-nonadecenyl, n-gadoleyl, n-eicosenyl, n-heneicosenyl, n-docosenyl and the like.

As the linear alkyl group or alkenyl group having 8 to 22 carbon atoms and having a hydroxyl group, one or more hydrogen atoms of the linear alkyl group or alkenyl group having 8 to 22 carbon atoms are substituted with a hydroxyl group. The group can be mentioned.

Examples of the branched alkyl group having 8 to 22 carbon atoms include isooctyl, s-octyl, t-octyl, isononyl, s-nonyl, t-nonyl, isodecyl, s-decyl, t-decyl, isoundecyl, s- Undecyl, t-undecyl, isolauryl, s-lauryl, t-lauryl, isotridecyl, s-tridecyl, t-tridecyl, isotetradecyl, s-tetradecyl, t-tetradecyl, isopentadecyl, s-pentadecyl, t-pentadecyl, Isopalmityl, 2-hexyldecyl, s-palmityl, t-palmityl, isoheptadecyl, s-heptadecyl, t-heptadecyl, isostearyl, s-stearyl, t-stearyl, isononadecyl, s-nonadecyl, t-nonadecyl, 2-octyllauryl , Isoeikoshi , S- eicosyl, t-eicosyl, iso Heng eicosyl, s- heneicosyl, t-heneicosyl, Isodokoshiru, s- docosyl, t-docosyl group and the like. Examples of the branched alkenyl group having 8 to 22 carbon atoms include isooctenyl, s-octenyl, t-octenyl, isononenyl, s-nonenyl, t-nonenyl, isodecenyl, s-decenyl, t-decenyl, isoundecenyl, s- Undecenyl, t-undecenyl, isododecenyl, s-dodecenyl, t-dodecenyl, isotridecenyl, s-tridecenyl, t-tridecenyl, isotetradecenyl, s-tetradecenyl, t-tetradecenyl, isopentadecenyl, s-pentadecenyl, t-pentadecenyl, isohexadecenyl, s-hexadecenyl, t-hexadecenyl, isoheptadecenyl, s-heptadecenyl, t-heptadecenyl, isooleyl, s-oleyl, t-oleyl, isononadecenyl, s-nonadecenyl, t- No Decenyl, Isoeikoseniru, s- eicosenyl, t-eicosenyl, iso Heng Eiko cell alkenyl, s- heneicosenyl, t-heneicosenyl, Isodokoseniru, s- docosenyl, may be mentioned t-docosenyl group.

As the branched alkyl group or alkenyl group having 8 to 22 carbon atoms having a hydroxyl group, one or more hydrogen atoms of the branched alkyl group or alkenyl group having 8 to 22 carbon atoms is substituted with a hydroxyl group. The group can be mentioned.

As the mono- or polyglycerin monoalkyl or alkenyl ether represented by the formula (1), R ₁ is a straight chain having 8 to 22 carbon atoms because it has high water solubility and excellent solubilizing power of silicone oil. A linear or branched alkyl group is preferable, and a linear alkyl group having 8 to 22 carbon atoms (particularly 12 to 14 carbon atoms) such as an n-lauryl group or an n-myristyl group is particularly preferable.

In the formula (1), n ₁ represents an average degree of polymerization of glycerin, and is, for example, 1 to 10, preferably 1 to 5, particularly preferably 1 to 3. When the value of n ₁ is less than 1, the hydrophobicity increases and the water solubilizing power tends to decrease. On the other hand, when the value of n ₁ exceeds 10, hydrophilicity tends to increase and solubilizing power to silicone oil tends to decrease.

The production method of the mono- or polyglycerin monoalkyl or alkenyl ether (a1) represented by the above formula (1) is not particularly limited. For example, in the presence of a basic catalyst, A method in which glycidol is added and reacted so that the abundance ratio (molar ratio) of the alcohol and glycidol is a specific value; a method in which an α-olefin epoxide is reacted with mono- or polyglycerin; in the presence of an acid catalyst or an alkali catalyst And a method of opening a ring of alkyl glycidyl ether using mono- or polyglycerin.

The HLB value of the mono- or polyglycerin alkyl or alkenyl ether (a1) in the present invention is, for example, 8.0 to 12.0, preferably 9.0 to 11.0, particularly preferably 9.5 or more, 11.0. Is less than. When the HLB value is below the above range, the hydrophobicity becomes too high, and mono- or polyglycerin alkyl or alkenyl ether dissolves only in silicone oil, and it tends to be difficult to dissolve in water, making it difficult to form a microemulsion. Tend to be. On the other hand, when the HLB value exceeds the above range, the hydrophilicity becomes too high, mono- or polyglycerin alkyl or alkenyl ether is dissolved only in water, and it tends to be difficult to dissolve in silicone oil. It tends to be difficult. For example, the HLB value can be decreased by increasing the number of carbon atoms of the alkyl group or alkenyl group, and can be increased by increasing the degree of polymerization of polyglycerol. Therefore, the HLB value can be adjusted by controlling the above molecular structure.

Preferred examples of the mono- or polyglycerin alkyl or alkenyl ether (a1) in the present invention include monoglycerin monolauryl ether (HLB value: 8.5), diglycerin monolauryl ether (HLB value: 10.6), triglycerin. And monomyristyl ether (HLB value: 11.0). These can be used alone or in combination of two or more.

[Mono or polyglycerol fatty acid ester (a2)]
The cosmetic composition of the present invention uses a mono- or polyglycerin alkyl or alkenyl ether (a1) and / or a mono- or polyglycerin fatty acid ester (a2) that is low in irritation and excellent in safety as a surfactant. The mono- or polyglycerin fatty acid ester (a2) is represented by the following formula (2). In the formula (2), R ₂ represents a linear or branched aliphatic hydrocarbon group having 8 to 22 carbon atoms which may have a hydroxyl group. n ₂ represents the average degree of polymerization of glycerin and is 1 to 10.
R ₂ C (═O) O— (C ₃ H ₆ O ₂ ) n ₂ —H (2)

C ₃ H ₆ O ₂ in parentheses in the formula (2) has both structures represented by the following formulas (5) and (6).
—CH ₂ —CHOH—CH ₂ O— (5)
—CH (CH ₂ OH) CH ₂ O— (6)

In the formula (2), R ₂ represents a linear or branched aliphatic hydrocarbon group having 8 to 22 carbon atoms which may have a hydroxyl group. Examples of the linear aliphatic hydrocarbon group having 8 to 22 carbon atoms include n-octyl, n-nonyl, n-decyl, n-undecyl, n-lauryl, n-tridecyl, n-tetradecyl, and n-pentadecyl. C _8-22 straight chain alkyl groups such as n-palmityl, n-heptadecyl, n-stearyl, n-nonadecyl, n-eicosyl, n-heneicosyl, n-docosyl; n-octenyl, n-nonenyl, n- Decenyl, n-undecenyl, n-dodecenyl, n-tridecenyl, n-tetradecenyl, n-pentadecenyl, n-hexadecenyl, n-heptadecenyl, n-elaidyl, n-oleyl, n-nonadecenyl, n-gadoleyl, n-eicosenyl, Examples thereof include C _8-22 straight chain alkenyl groups such as n-heneicosenyl and n-docosenyl groups.

As the linear aliphatic hydrocarbon group having 8 to 22 carbon atoms and having a hydroxyl group, one or more hydrogen atoms of the above linear aliphatic hydrocarbon group having 8 to 22 carbon atoms are substituted with a hydroxyl group. The group can be mentioned.

Examples of the branched aliphatic hydrocarbon group having 8 to 22 carbon atoms include isooctyl, s-octyl, t-octyl, isononyl, s-nonyl, t-nonyl, isodecyl, s-decyl, t-decyl, and isoundecyl. , S-undecyl, t-undecyl, isolauryl, s-lauryl, t-lauryl, isotridecyl, s-tridecyl, t-tridecyl, isotetradecyl, s-tetradecyl, t-tetradecyl, isopentadecyl, s-pentadecyl, t -Pentadecyl, isopalmityl, 2-hexyldecyl, s-palmityl, t-palmityl, isoheptadecyl, s-heptadecyl, t-heptadecyl, isostearyl, s-stearyl, t-stearyl, isononadecyl, s-nonadecyl, t-nonadecyl, 2 -Octyl lauryl, iso ray Sill, s- eicosyl, t-eicosyl, iso Heng eicosyl, s- heneicosyl, t-heneicosyl, Isodokoshiru, s- docosyl, C _8-22 branched alkyl group such as t-docosyl group; isooctenyl, s- octenyl, t -Octenyl, isononenyl, s-nonenyl, t-nonenyl, isodecenyl, s-decenyl, t-decenyl, isoundecenyl, s-undecenyl, t-undecenyl, isododecenyl, s-dodecenyl, t-dodecenyl, isotridecenyl, s-tridecenyl, t -Tridecenyl, isotetradecenyl, s-tetradecenyl, t-tetradecenyl, isopentadecenyl, s-pentadecenyl, t-pentadecenyl, isohexadecenyl, s-hexadecenyl, t-hexadecenyl, isoheptadecenyl , S-heptade Senyl, t-heptadecenyl, isooleyl, s-oleyl, t-oleyl, isononadecenyl, s-nonadecenyl, t-nonadecenyl, isoeicosenyl, s-eicosenyl, t-eicosenyl, isoheneicosenyl, s-heneicosenyl, t-henecocenyl, Examples thereof include C _8-22 branched alkenyl groups such as isodocosenyl, s-docosenyl, and t-docosenyl groups.

As the branched aliphatic hydrocarbon group having 8 to 22 carbon atoms and having a hydroxyl group, one or more hydrogen atoms of the branched aliphatic hydrocarbon group having 8 to 22 carbon atoms are substituted with a hydroxyl group. The group can be mentioned.

As the mono- or polyglycerin fatty acid ester (a2) of the present invention, R ₂ in the formula (2) is a linear or branched group having 8 to 22 carbon atoms, particularly in terms of the excellent solubilizing power of silicone oil. A chain alkyl group is preferable, and a linear alkyl group having 8 to 22 carbon atoms (particularly 12 to 14 carbon atoms) such as an n-lauryl group and an n-myristyl group is particularly preferable.

In the formula (2), n ₂ represents the average degree of polymerization of glycerin, and is, for example, 1 to 10, preferably 1 to 5, and particularly preferably 1 to 3. When the value of n ₂ is less than 1, the hydrophobicity increases and the water solubilizing power tends to decrease. On the other hand, when the value of n ₂ exceeds 10, hydrophilicity tends to increase and solubilizing power to silicone oil tends to decrease.

The HLB value of the mono- or polyglycerin fatty acid ester (a2) in the present invention is, for example, 9.0 to 15.0, preferably 9.0 to 13.0, and particularly preferably 9.0 to 12.0. When the HLB value is less than the above range, the hydrophobicity becomes too high, and the mono- or polyglycerin fatty acid ester tends to dissolve only in the silicone oil, making it difficult to dissolve in water. On the other hand, when the HLB value exceeds the above range, the hydrophilicity becomes too high, and the mono- or polyglycerin fatty acid ester tends to be soluble only in water and difficult to dissolve in silicone oil. For example, the HLB value can be increased by increasing the number of carbon atoms of the fatty acid residue, and can be increased by increasing the polymerization degree of the polyglycerol. Therefore, the HLB value can be adjusted by controlling the above molecular structure.

Preferred examples of the mono- or polyglycerin fatty acid ester (a2) in the present invention include diglycerin monolaurate and diglycerin monomyristate. These can be used alone or in combination of two or more.

In the present invention, for example, the trade name “Poem DL-100” (diglycerin monolaurate, HLB: 9.4, manufactured by Riken Vitamin Co., Ltd.), the trade name “Poem DM-100” (diglycerin monomyristate). Commercial products such as rate, HLB: 10.1, manufactured by Riken Vitamin Co., Ltd. can be preferably used.

[Silicone oil (b)]
The silicone oil (b) of the present invention may be at least a polysiloxane having a main chain composed of a siloxane bond, and may have a substituent at the end of the main chain and / or the side chain. The main chain may form a ring. Silicone oil (b) includes straight silicone oil and modified silicone oil.

The straight silicone oil is a polysiloxane whose main chain is composed of a siloxane bond, and when it has a substituent, the substituent is a methyl group and / or a phenyl group, and has no substituent other than a methyl group and a phenyl group. .

The bonding position of the substituent in the straight silicone oil is not particularly limited, and both ends of the main chain (both ends type: represented by the following formula (7)) or one end (one end type: represented by the following formula (8) May be present on the side chain (side chain type: represented by the following formula (9)), and has a substituent on the side chain and both ends. In addition, the side chain and both terminal types: represented by the following formula (10) may further have a substituent on the side chain and one terminal (side chain and one terminal type: the following formula (11) )). All side chains and terminals may be substituted with methyl groups (represented by the following formula (12)). The compounds represented by the following formulas (9) to (11) may be any of random copolymers, alternating copolymers, block copolymers and the like.

X ¹ , X ² and X ³ in the above formula are a hydrogen atom or a phenyl group, and m and n are integers of 1 or more. X ¹ , X ² and X ³ may be the same or different. m and n may also be the same or different.

Specific examples of the straight silicone oil include all side chains, dimethyl silicone having a terminal methyl group, and cyclic dimethyl silicone in which the dimethyl silicone forms a ring, methyl phenyl having a phenyl group in a part of the side chain. Examples thereof include silicone and methyl hydrogen silicone in which a part of the side chain is hydrogen. In the present invention, among them, cyclopentasiloxane, diphenylsiloxyphenyl trimethicone and the like are preferable because they have excellent detergency and less stickiness. For example, the trade name “FK-995” (cyclohexane) Commercially available products such as pentasiloxane, manufactured by Shin-Etsu Silicone Co., Ltd., and trade name “KF-56A” (diphenylsiloxyphenyl trimethicone, manufactured by Shin-Etsu Silicone Co., Ltd.) can be suitably used.

The modified silicone oil is a polysiloxane whose main chain is composed of a siloxane bond, and has a substituent other than a methyl group and a phenyl group. The bonding position of the substituent in the modified silicone oil is not particularly limited, and both ends of the main chain (both ends type: represented by the following formula (13)) or one end (one end type: the following formula (14) May be present in the side chain (side chain type: represented by the following formula (15)), and has a substituent on the side chain and at both ends. (A side chain and both terminal types: represented by the following formula (16)), and may further have a substituent on the side chain and one terminal (side chain and one terminal type: the following formula ( 17)). The compounds represented by the following formulas (15) to (17) may be any of random copolymers, alternating copolymers, block copolymers and the like.

In the above formula, X ⁴ , X ⁵ and X ⁶ are substituents (other than methyl group and phenyl group), and m ′ and n ′ are integers of 1 or more. X ⁴ , X ⁵ and X ⁶ may be the same or different. m ′ and n ′ may also be the same or different.

Examples of the substituent other than the methyl group and the phenyl group in X ⁴ , X ⁵ and X ⁶ in the above formula include, for example, an alkyl group having 2 or more carbon atoms, an aralkyl group, an epoxy group, a fluorine atom, an amino group, a carboxyl group, Examples include aliphatic hydroxyl groups (alcoholic hydroxyl groups), aromatic hydroxyl groups other than phenyl groups (phenolic hydroxyl groups), (meth) acryloyl group-containing substituents, substituents containing polyether chains, and the like.

As the modified silicone oil in the present invention, among them, a modified silicone oil having an alkyl group having 2 or more carbon atoms as a substituent is preferable in that it can further improve the detergency. Modified silicone oils having 18 to 18 linear or branched alkyl groups (for example, lauryl group, cetyl group, etc.) in the side chain are preferred. In the present invention, for example, commercial names such as “SS-3408” (caprylylmethicone, manufactured by Toray Dow Corning) and “2502 Cosmetic Fluid” (cetyl dimethicone, manufactured by Toray Dow Corning) are commercially available. The product can be suitably used.

As the silicone oil in the present invention, for example, trade name “KF-995” (cyclopentasiloxane, manufactured by Shin-Etsu Silicone Co., Ltd.), trade name “KF-56A” (diphenylsiloxyphenyl trimethicone, manufactured by Shin-Etsu Silicone Co., Ltd.) ), Etc., trade names such as “SS-3408” (caprylyl methicone, manufactured by Toray Dow Corning Co., Ltd.), “2502 Cosmetic Fluid” (cetyl dimethicone, manufactured by Toray Dow Corning Co., Ltd.), etc. A side chain type alkyl-modified silicone oil or the like can be preferably used. These can be used alone or in combination of two or more.

[Cosmetic composition]
The cosmetic composition of the present invention comprises a mono- or polyglycerin alkyl or alkenyl ether (a1) and / or a mono- or polyglycerin fatty acid ester (a2), a silicone oil (b), and water (c). The water content is 80.0% by weight or more of the total amount of the cosmetic composition.

In the cosmetic composition of the present invention, when the mono- or polyglycerin fatty acid ester (a2) is not used and the mono- or polyglycerin alkyl or alkenyl ether (a1) is used, It is 80.0% by weight or more of the total amount of the composition, preferably about 86.0 to 93.0% by weight. When the amount of water is less than the above range, it becomes difficult to use as a lotion type.
In addition, when mono or polyglycerin alkyl or alkenyl ether (a1) is not used and mono or polyglycerin fatty acid ester (a2) is used, the amount of water (c) is 80.0% of the total amount of the cosmetic composition. %, For example, about 80.0 to 98.0% by weight, preferably about 85.5 to 94.5% by weight, and particularly preferably about 87.0 to 92.0% by weight. If the blending amount of water (c) exceeds the above range, the solubilizing power becomes insufficient, the transparency of the cosmetic composition tends to decrease, and the cleaning power tends to decrease. On the other hand, if the blending amount of water (c) is below the above range, the blending amount of the mono- or polyglycerin fatty acid ester (a2) is relatively increased, which is not only uneconomical, but also has a sticky feeling and skin irritation. There is a tendency that the feeling of use and safety decrease.

When the mono- or polyglycerin fatty acid ester (a2) is not used in the cosmetic composition of the present invention, the blending amount of the mono- or polyglycerin alkyl or alkenyl ether (a1) is, for example, the total amount of the cosmetic composition It is 5.5 wt% or more and less than 9.0 wt%, preferably about 6.0 to 8.5 wt%, particularly preferably about 6.5 to 8.5 wt%. If the blending amount of mono- or polyglycerin alkyl or alkenyl ether is less than the above range, the solubilizing power is insufficient and the transparency of the cosmetic composition tends to be lowered. Moreover, it becomes difficult to mix | blend a sufficient quantity of oil-based component in order to ensure detergency, and there exists a tendency for detergency to fall. On the other hand, when the blending amount of mono- or polyglycerin alkyl or alkenyl ether exceeds the above range, not only is it uneconomical, but also stickiness and skin irritation increase, so that the feeling of use and safety tend to decrease. .
When the mono- or polyglycerin alkyl or alkenyl ether (a1) is not used, the blending amount of the mono- or polyglycerin fatty acid ester (a2) is, for example, 1.0 to 10.0% by weight of the total amount of the cosmetic composition. %, Preferably about 3.0 to 7.5% by weight, particularly preferably about 4.5 to 7.5% by weight, and most preferably about 5.5 to 7.5% by weight. When the blending amount of the mono- or polyglycerin fatty acid ester (a2) is less than the above range, the solubilizing power tends to be insufficient and the transparency of the cosmetic composition tends to be lowered. Moreover, it becomes difficult to mix | blend a sufficient quantity of oil-based component in order to ensure detergency, and there exists a tendency for detergency to fall. On the other hand, when the blending amount of the mono- or polyglycerin fatty acid ester (a2) exceeds the above range, not only is it uneconomical, but also stickiness and skin irritation increase, and the feeling of use and safety tend to decrease. .

In the cosmetic composition of the present invention, when the mono- or polyglycerin fatty acid ester (a2) is not used and the mono- or polyglycerin alkyl or alkenyl ether (a1) is used, The total amount of the cosmetic composition is 1.5% by weight or more and less than 5.0% by weight, preferably about 2.0 to 4.5% by weight, particularly preferably about 2.0 to 3.5% by weight. . If the blending amount of the silicone oil is below the above range, the detergency tends to decrease. On the other hand, when the blending amount of the silicone oil exceeds the above range, solubilization becomes difficult, and the transparency of the cosmetic composition tends to decrease. Also, the cleaning power tends to decrease.
In addition, when the mono- or polyglycerin alkyl or alkenyl ether (a1) is not used and the mono- or polyglycerin fatty acid ester (a2) is used, the amount of the silicone oil (b) is, for example, the total amount of the cosmetic composition About 1.0 to 10.0% by weight, preferably about 2.5 to 7.0% by weight, particularly preferably about 3.5 to 5.5% by weight, most preferably 3.5 to 4.5% by weight Degree. When the blending amount of the silicone oil (b) is below the above range, the detergency tends to decrease. On the other hand, when the compounding quantity of silicone oil (b) exceeds the said range, solubilization will become difficult and there exists a tendency for the transparency of the composition for cosmetics to fall. Also, the cleaning power tends to decrease.

In the cosmetic composition of the present invention, the amount of water (c) when using mono- or polyglycerin alkyl or alkenyl ether (a1) and mono- or polyglycerin fatty acid ester (a2) is the total amount of the cosmetic composition. Of 80.0% by weight or more, preferably about 80.0 to 90.0% by weight. When the amount of water is less than the above range, it becomes difficult to use as a lotion type.

The total amount of the mono- or polyglycerin alkyl or alkenyl ether (a1) and mono- or polyglycerin fatty acid ester (a2) used in the cosmetic composition of the present invention is, for example, 5 of the total amount of the cosmetic composition. It is about 0.0% by weight or more and less than 10.0% by weight, preferably about 5.5 to 9.5% by weight, particularly preferably about 6.0 to 9.0% by weight. If the blending amount of mono- or polyglycerin alkyl or alkenyl ether and mono- or polyglycerin fatty acid ester is below the above range, the solubilizing power tends to be insufficient and the transparency of the cosmetic composition tends to be lowered. Moreover, it becomes difficult to mix | blend a sufficient quantity of oil-based component in order to ensure detergency, and there exists a tendency for detergency to fall. On the other hand, when the amount of mono- or polyglycerin alkyl or alkenyl ether and mono- or polyglycerin fatty acid ester exceeds the above range, not only is it uneconomical, but also stickiness and skin irritation increase. Tend to decrease.

In the cosmetic composition of the present invention, the amount of the silicone oil (b) when the mono- or polyglycerin alkyl or alkenyl ether (a1) and the mono- or polyglycerin fatty acid ester (a2) are used is, for example, cosmetics It is 1.0% by weight or more and less than 6.0% by weight, preferably about 2.0 to 5.0% by weight, particularly preferably about 3.0 to 4.0% by weight of the total amount of the composition for use. If the blending amount of the silicone oil is below the above range, the detergency tends to decrease. On the other hand, when the blending amount of the silicone oil exceeds the above range, solubilization becomes difficult, and the transparency of the cosmetic composition tends to decrease. Also, the cleaning power tends to decrease.

In addition to mono- or polyglycerin alkyl or alkenyl ether (a1) and / or mono- or polyglycerin fatty acid ester (a2), silicone oil (b), and water (c), the cosmetic composition according to the present invention includes: Other additives such as amphoteric surfactants and nonionic surfactants may be blended. By blending these, the skin feel can be improved.

The amphoteric surfactant is not particularly limited as long as it is used in a normal cosmetic composition, and examples thereof include carbobetaine-based active agents, amide betaine-based active agents, sulfobetaine-based active agents, Examples include betaine activators, imidazolium betaine activators, amine oxide activators, and the like.

The nonionic surfactant is not particularly limited as long as it is used in ordinary cosmetic compositions. For example, polyoxyethylene fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbitan Fatty acid ester, C _8-12 fatty acid monoglyceride, glycerin monoalkyl ether, polyoxyethylene alkyl ether, polyoxyethylene polyoxypropylene glycol, coconut oil fatty acid diethanolamide, C _6-24 fatty acid diethanolamide, C _6-24 fatty acid monoethanol Examples thereof include amides and alkyl saccharide surfactants.

The cosmetic composition according to the present invention further includes components used in normal cosmetic compositions, for example, viscosity modifiers such as anionic, nonionic, and cationic polymers; moisturizing components such as polyols. Oily components such as squalane, jojoba oil, olive oil, higher alcohols, lanolin, and esters; amides, foaming agents, preservatives, water-soluble polymers, pH adjusters, UV absorbers, pearling agents, antioxidants, and fragrances , Pigments and the like can be appropriately blended within a range not impairing the effects of the present invention.

The cosmetic composition of the present invention comprises the mono- or polyglycerin alkyl or alkenyl ether (a1) and / or mono- or polyglycerin fatty acid ester (a2), silicone oil (b), water (c) (for example, distilled water). , Purified water, industrial purified water, deionized water, and the like), and other additives as necessary.

The cosmetic composition of the present invention contains a high amount of silicone oil and a very small particle size due to the surfactant activity of mono- or polyglycerin alkyl or alkenyl ether (a1) and / or mono- or polyglycerin fatty acid ester (a2). Since micelles are formed and silicone oil is highly dispersed in water [= to form an oil-in-water (O / W) microemulsion], a cosmetic composition having transparency and a beautiful appearance is obtained. .

The maximum particle size of micelles contained in the cosmetic composition of the present invention is, for example, 1 μm or less, preferably 500 nm or less, particularly preferably 100 nm or less. The maximum particle size of the micelle can be measured using, for example, a nanotrack particle size analyzer.

In addition, since the cosmetic composition according to the present invention contains silicone oil as an oil component, it has excellent detergency for highly hydrophobic cosmetics (for example, waterproof mascara, lipstick, foundation, etc.). Have. In addition, silicone oil does not have a sticky feeling peculiar to oily components, so it is excellent in use feeling. Further, the above mono- or polyglycerin alkyl or alkenyl ether and mono- or polyglycerin fatty acid ester used as a surfactant are hypoallergenic and have excellent solubilizing power. It is possible to form a lotion-type cosmetic composition having low irritation, high safety and transparency. The cosmetic composition according to the present invention has excellent detergency, usability, safety, and beautiful appearance, and thus is useful as, for example, a cleansing lotion, a lotion, and the like.

In particular, when the cosmetic composition according to the present invention is used as a cleansing lotion, for example, for use in wiping cosmetics (for example, cosmetics with high hydrophobicity such as waterproof mascara) contained in cotton or the like. It can be preferably used. The skin after use is not sticky and does not need to be washed away. Therefore, it can be used even in the absence of water and can be used very easily.

Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples.

Example A cosmetic composition was produced by a conventional method using the blending compositions (% by weight) shown in Tables 1 and 2 below, and the transparency and detergency were evaluated by the following methods.

[transparency]
The particle size distribution of each cosmetic composition obtained in the examples was measured using a nanotrack particle size analyzer (trade name “UPA-EX150 / UPA-EX-250”, manufactured by Nikkiso Co., Ltd.), and the transparency Were evaluated according to the following criteria.
Evaluation criteria ○: Maximum particle size is 100 nm or less △: Maximum particle size exceeds 100 nm and less than 10 μm ×: Maximum particle size is 10 μm or more

[Detergency]
Mascara (trade name “Volume Express Turbo Boost N Waterproof (Black)”, manufactured by Maybelline New York) 0.1 g was applied to the upper arm and dried using a dryer for 30 minutes.
Each cosmetic composition 2 mL obtained in the Examples was soaked in cotton and allowed to acclimate to the mascara applied to the upper arm for 1 minute, then wiped off 5 times, and the detergency was evaluated from the degree of mascara drop according to the following criteria. .
Evaluation criteria ○: Completely dropped △: Almost dropped ×: Drop was insufficient

The above results are summarized in Tables 1 and 2 below.

The cosmetic composition according to the present invention contains, as an oily component, a silicone oil that does not have a sticky feeling peculiar to an oily component, so that it is an excellent cleaning agent for highly hydrophobic cosmetics such as a waterproof mascara. While having power, it has an excellent feeling of use without stickiness. Then, the silicone oil forms a stable micelle by the surface-active action of a hypoallergenic mono- or polyglycerin alkyl or alkenyl ether, or mono- or polyglycerin fatty acid ester, and is highly dispersed in water to form a microemulsion. Therefore, it has a transparent appearance and is excellent in safety. That is, the cosmetic composition according to the present invention can be suitably used as a cleansing lotion having excellent appearance and excellent detergency, safety and usability.

Claims

A cosmetic composition containing mono- or polyglycerin alkyl or alkenyl ether (a1) and / or mono- or polyglycerin fatty acid ester (a2), silicone oil (b), and water (c), the water content Is a cosmetic composition, characterized in that is 80% by weight or more of the total amount of the cosmetic composition.
Mono- or polyglycerin alkyl or alkenyl ether (a1) is represented by the following formula (1)
R 1 O— (C 3 H 6 O 2 ) n 1 —H (1)
(In the formula, R 1 represents a linear or branched alkyl group or alkenyl group having 8 to 22 carbon atoms which may have a hydroxyl group. N 1 represents the average degree of polymerization of glycerol and 1 to 10)
The cosmetic composition according to claim 1, which is a mono- or polyglycerin monoalkyl or alkenyl ether represented by the formula:
The cosmetic composition according to claim 1 or 2, wherein the mono- or polyglycerin alkyl or alkenyl ether (a1) has an HLB value of 8.0 to 12.0.
Mono- or polyglycerin fatty acid ester (a2) is represented by the following formula (2)
R 2 C (═O) O— (C 3 H 6 O 2 ) n 2 —H (2)
(In the formula, R 2 represents a linear or branched aliphatic hydrocarbon group having 8 to 22 carbon atoms which may have a hydroxyl group. N 2 represents the average degree of polymerization of glycerin, 1 to 10)
The cosmetic composition according to claim 1, wherein the cosmetic composition is a compound having an HLB value of 9.0 to 15.0.
When the mono- or polyglycerin fatty acid ester (a2) is not used, the content of the mono- or polyglycerin alkyl or alkenyl ether (a1), silicone oil (b), and water (c) with respect to the total amount of the cosmetic composition is in the following range. The cosmetic composition according to any one of claims 1 to 3, wherein
Mono- or polyglycerin alkyl or alkenyl ether (a1): 5.5% by weight or more and less than 9.0% by weight Silicone oil (b): 1.5% by weight or more and less than 5.0% by weight Water (c): 86 0.0 to 93.0% by weight
When mono- or polyglycerin alkyl or alkenyl ether (a1) is not used, the content of mono- or polyglycerin fatty acid ester (a2), silicone oil, and water relative to the total amount of the cosmetic composition is in the following range: 4. The cosmetic composition according to 4.
Mono or polyglycerol fatty acid ester (a2): 1.0 to 10.0% by weight
Silicone oil (b): 1.0 to 10.0% by weight
Water (c): 80.0 to 98.0% by weight
When using mono or polyglycerol alkyl or alkenyl ether (a1) and mono or polyglycerol fatty acid ester (a2), mono or polyglycerol alkyl or alkenyl ether (a1), mono or polyglycerol fatty acid ester (a2), silicone oil, The cosmetic composition according to any one of claims 1 to 4, wherein the content of water and water relative to the total amount of the cosmetic composition is in the following range.
Mono- or polyglycerin alkyl or alkenyl ether (a1) and mono- or polyglycerin fatty acid ester (a2): 5.0% by weight or more and less than 10.0% by weight Silicone oil (b): 1.0% by weight or more, 6. Less than 0% by weight Water (c): 80.0% by weight or more