JP6997559B2 - Oily composition, hair treatment method - Google Patents

Description

The present invention relates to an oily composition suitable for use in a manner applied to hair and not washed away, and a hair treatment method using the composition.

As a composition for hair, an oily composition containing decamethylcyclopentasiloxane is known (see Patent Document 1). In such an oily composition, it may be necessary to add water. For example, when it is desired to add a water-soluble component, if water is added, the water-soluble component itself dissolves in water, and the dispersibility of the water-soluble component in the oily composition is enhanced.

However, when decamethylcyclopentasiloxane and water coexist, water is incompatible with decamethylcyclopentasiloxane, so that water separation or water dispersibility is insufficient. This situation causes inconveniences such as poor uniform coatability of the hair composition.

The present applicant proposes a technique relating to an oily composition in which water is dispersed in decamethylcyclopentasiloxane in Patent Document 2. The proposal comprises water, a polyether-modified silicone having an HLB value of 3.5 or more and less than 6.0, a decamethylcyclopentasiloxane, and a polyoxyethylene alkyl ether having an HLB value of 6.5 or more and 10.5 or less. (See claims 1 and 5 of Patent Document 2). Although such proposals are being made, there are cases where it is required to improve the feel of hair by blending ingredients, and other technical proposals that enhance the dispersibility of water are desired. Further, even if it is a component that enhances the dispersibility of water, it is also desired that the component itself has high dispersibility.

Japanese Unexamined Patent Publication No. 2013-87115 JP-A-2015-110545

In view of the above circumstances, it is an object of the present invention to provide an oily composition capable of effectively dispersing water when water is allowed to coexist with decamethylcyclopentasiloxane, and a hair treatment method using the composition. And.

As a result of diligent studies by the present inventor, it has been found that the combined use of a specific surfactant is suitable for effective dispersion of water in an oily composition, and the present invention has been completed.

［上記一般式（１）において、ｘ及びｙは、分子量に依存する整数を表し、ｎは、エチレンオキサイドの平均付加モル数を表す。］ That is, the oily composition according to the present invention contains water, a surfactant, and decamethylcyclopentasiloxane, and as the surfactant, polyglyceryl-3-polydimethylsiloxyethyl dimethicone and an ether of a higher fatty acid and diglycerin. , Polyglyceryl-3-polydimethylsiloxyethyl dimethicone and HLB 6.5 or more and less than 10.5 polyoxyethylene polyoxypropylene alkyl ether, polyglyceryl-3-polydimethylsiloxyethyl dimethicone and HLB 6.5 or more and 10.5 Less than polyoxyethylene alkyl ether, polyether-modified silicone with HLB of 3.5 or more and less than 6.0 represented by the following general formula (1) and ester of higher fatty acid and diglycerin, or the following general formula (1) It is a mixture of a polyether-modified silicone having an HLB of 3.5 or more and less than 6.0 and a polyoxyethylene polyoxypropylene alkyl ether having an HLB of 6.5 or more and less than 10.5.

[In the above general formula (1), x and y represent integers depending on the molecular weight, and n represents the average number of moles of ethylene oxide added. ]

In addition, "oil-based" in the oil-based composition of the present invention means that the non-aqueous medium containing decamethylcyclopentasiloxane becomes the outer phase with respect to water.

The oily composition according to the present invention contains 6.5 or more of polyglyceryl-3-polydimethylsiloxyethyl dimethicone, an ester of higher fatty acid and diglycerin, polyglyceryl-3-polydimethylsiloxyethyl dimethicone and HLB as the surfactant. Polyoxyethylene alkyl ether of less than .5, or polyether-modified silicone with HLB of 3.5 or more and less than 6.0 and poly of HLB of 6.5 or more and less than 10.5 represented by the general formula (1). Those containing oxyethylene polyoxypropylene alkyl ether are preferable. With such an oily composition, water, a surfactant and the like can be easily dispersed in the production.

Further, in the oily composition according to the present invention, as the surfactant, polyglyceryl-3-polydimethylsiloxyethyl dimethicone, polyoxyethylene polyoxypropylene alkyl ether having an HLB of 6.5 or more and less than 10.5, and polyglyceryl-3. -Polydimethylsiloxyethyl dimethicone and polyoxyethylene alkyl ether having an HLB of 6.5 or more and less than 10.5, or a polyether modification having an HLB of 3.5 or more and less than 6.0 represented by the general formula (1). It is preferable that silicone and polyoxyethylene polyoxypropylene alkyl ether having an HLB of 6.5 or more and less than 10.5 are blended. Such an oily composition is excellent in dispersibility of water, a surfactant and the like in long-term storage at room temperature.

The oily composition according to the present invention preferably contains a water-soluble component. By blending water, the blending of water-soluble components can be increased. Here, the "water-soluble component" means a component that can confirm a transparent aqueous solution when mixed with water.

The oily composition according to the present invention is preferably applied to hair and used in a manner that does not wash away. When a water-soluble component is blended in this composition, the effect of the water-soluble component on hair can be expected.

In addition, the hair treatment method according to the present invention uses the above-mentioned oily composition according to the present invention, which is applied to hair and used in a manner not to be washed away.

According to the oily composition according to the present invention, effective dispersion of water coexisting with decamethylcyclopentasiloxane is possible.

Further, according to the hair treatment method according to the present invention, since water in the oily composition can be effectively dispersed, each component in the oily composition is applied to the hair with high uniformity.

It is an image which shows the oil-based composition of an Example and a comparative example 50 days after the production.

The present invention will be described below based on embodiments of the present invention.
The oily composition according to the present embodiment contains water, a predetermined surfactant, and decamethylcyclopentasiloxane. Further, if it is permissible in actual use, the components contained in the known hair composition may be appropriately added as optional components.

(water)
The blending amount of water in the oily composition of the present embodiment may be appropriately set according to the degree of turbidity and transparency required for this oily composition. From the viewpoint of reducing turbidity, the blending amount is, for example, 3% by mass or less, preferably 1% by mass or less, preferably 0.1% by mass or less, and more preferably 0.01% by mass or less. On the other hand, the lower limit of the blending amount of water is, for example, 0.00001% by mass.

［上記一般式（１）において、ｘ及びｙは、分子量に依存する整数を表し、ｎは、エチレンオキサイドの平均付加モル数を表す。］ (Predetermined surfactant)
6. The predetermined surfactant to be blended in the oily composition of the present embodiment is polyglyceryl-3-polydimethylsiloxyethyl dimethicone and an ester of higher fatty acid and diglycerin, polyglyceryl-3-polydimethylsiloxyethyl dimethicone and HLB. Polyoxyethylene polyoxypropylene alkyl ether of 5 or more and less than 10.5, polyglyceryl-3-polydimethylsiloxyethyl dimethicone and polyoxyethylene alkyl ether having HLB of 6.5 or more and less than 10.5, according to the following general formula (1). The HLB represented by the ester of polyether-modified silicone and higher fatty acid and diglycerin having an HLB of 3.5 or more and less than 6.0, or the HLB represented by the following general formula (1) is 3.5 or more and less than 6.0. Polyether-modified silicones and polyoxyethylene polyoxypropylene alkyl ethers having an HLB of 6.5 or more and less than 10.5.

[In the above general formula (1), x and y represent integers depending on the molecular weight, and n represents the average number of moles of ethylene oxide added. ]

In the oily composition of the present embodiment, the blending amount of the above-mentioned predetermined surfactant is appropriately set according to the blending amount of water. The blending amount of the predetermined surfactant is, for example, 50 parts by mass or less and 0.5 parts by mass or more and 30 parts by mass or less with respect to 1 part by mass of water.

The polyglyceryl-3-polydimethylsiloxyethyl dimethicone is specified as a display name, and is commercially available as "KF-6104" manufactured by Shinetsu Silicone Co., Ltd., "KF-6106" manufactured by Shinetsu Silicone Co., Ltd., and the like.

In the oily composition of the present embodiment, one or more of the above polyglyceryl-3-polydimethylsiloxyethyl dimethicone is blended. The blending amount is appropriately set according to the blending amount of water. The blending amount of the polyglyceryl-3-polydimethylsiloxyethyl dimethicone is, for example, 50 parts by mass or less and 0.5 parts by mass or more and 30 parts by mass or less with respect to 1 part by mass of water.

Examples of the ester of the higher fatty acid and diglycerin include polyglyceryl-2 stearate, polyglyceryl-2 oleate, and polyglyceryl-2 isostearate, which are indicated by cosmetic names.

In the oily composition of the present embodiment, the blending amount of the higher fatty acid and the ester of diglycerin is appropriately set according to the blending amount of water. The blending amount of the higher fatty acid and the ester of diglycerin is, for example, 30 parts by mass or less and 0.1 parts by mass or more and 15 parts by mass or less with respect to 1 part by mass of water.

In the above-mentioned polyoxyethylene polyoxypropylene alkyl ether, the HLB value (Hydrophile-Lipophile Balance) is calculated by an emulsification test.

The calculation of the HLB value by the emulsification test is performed according to the method described below. First, A mass parts of polyoxyethylene polyoxypropylene alkyl ether and B mass parts of sorbitan monostearic acid ester (“NIKKOL SS-10MV” manufactured by Nikko Chemical Co., Ltd., HLB value = 4. 7) is used, and emulsions having the following compositions having different blending ratios (A / B) are prepared by the following method. After leaving this emulsion for one day, the blending amounts A and B of the surfactant that minimizes the particle size of the oil droplets in the emulsion are obtained and calculated based on the following formula.

Composition of emulsion Liquid paraffin (oil phase) 40% by mass
Emulsifier A + B = 4% by mass
56% by mass of water

Preparation method of emulsion The liquid paraffin is heated to about 80 ° C., and an aqueous phase of 80 ° C. or higher is added while stirring to emulsify. Then, while cooling, stirring is continued and the mixture is left at 40 ° C.

HLB value calculation formula HLB value = (10.5-4.7 x B / 4) 4 / A

Examples of the polyoxyethylene polyoxypropylene alkyl ether having an HLB of 6.5 or more and less than 10.5 include PPG-4 Ceteth-1 and PPG-4 Ceteth-10 with the display name in cosmetics.

In the oily composition of the present embodiment, one or more of the polyoxyethylene polyoxypropylene alkyl ethers having an HLB of 6.5 or more and less than 10.5 are blended. The blending amount is appropriately set according to the blending amount of water. The blending amount of the polyoxyethylene alkyl ether having an HLB of 6.5 or more and less than 10.5 is, for example, 30 parts by mass or less and 0.1 parts by mass or more and 15 parts by mass or less with respect to 1 part by mass of water. Is good.

In the above-mentioned polyoxyethylene alkyl ether, the HLB value (Hydrophile-Lipophile Balance) is calculated by an emulsification test as in the case of the above-mentioned polyoxyethylene polyoxypropylene alkyl ether HLB.

Examples of the polyoxyethylene alkyl ether having an HLB of 6.5 or more and less than 10.5 include laureth-2, ceteth-2, ceteth-2, steareth-2, steareth-4, and oleth. -2, Oles-7, Behenes-5, Behenes-10, (C12-14) Palace-3.

In the oily composition of the present embodiment, one or more of the polyoxyethylene alkyl ethers having an HLB of 6.5 or more and less than 10.5 are blended. The blending amount is appropriately set according to the blending amount of water. The blending amount of the polyoxyethylene alkyl ether having an HLB of 6.5 or more and less than 10.5 is, for example, 30 parts by mass or less and 0.1 parts by mass or more and 15 parts by mass or less with respect to 1 part by mass of water. Is good.

In the above-mentioned polyether-modified silicone having an HLB of 3.5 or more and less than 6.0, the HLB value (Hydrophile-Lipophile Balance) is 1/5 of the mass percentage of polyoxyethylene in the polyether-modified silicone. The HLB value of the polyether-modified silicone is preferably 3.8 or more and less than 5.7, and more preferably 4.0 or more and less than 5.5.

Examples of the polyether-modified silicone include PEG-3 dimethicone, PEG-7 dimethicone, PEG-8 dimethicone, PEG-9 dimethicone, PEG-10 dimethicone, and PEG-12 dimethicone.

In the oily composition of the present embodiment, one or more of the above-mentioned polyether-modified silicones having an HLB of 3.5 or more and less than 6.0 are blended. The blending amount is appropriately set according to the blending amount of water. The blending amount of the polyether-modified silicone is, for example, 50 parts by mass or less and 0.5 parts by mass or more and 30 parts by mass or less with respect to 1 part by mass of water.

(Decamethylcyclopentasiloxane)
Decamethylcyclopentasiloxane is an oily medium that is an external phase component of the oily composition of the present embodiment in which water is dispersed.

The blending amount of decamethylcyclopentasiloxane in the oily composition of the present embodiment is, for example, 70% by mass or more, and preferably 80% by mass or more.

(Optional ingredient)
As described above, the optional component to be blended in the oily composition of the present embodiment is appropriately selected from those known as components to be blended in the hair composition. Optional components include methylpolysiloxane, highly polymerized methylpolysiloxane, dimethiconol, cationic surfactants, alcohols, polyhydric alcohols, saccharides, ester oils, fats and oils, fatty acids, hydrocarbons, waxes, polymer compounds, amino acids, animal and plant extracts. Substances, microorganism-derived substances, inorganic compounds, fragrances, preservatives, metal ion sequestering agents, ultraviolet absorbers, etc.

Further, the oily composition of the present embodiment may contain a known water-soluble component. The dispersibility of this water-soluble component is high because water is also blended. Examples of the water-soluble component include saccharides such as polyethylene glycol (PEG) and trehalose.

(Dosage form)
The dosage form of the oily composition of the present embodiment when used is, for example, liquid or mist.

(Use)
The oily composition of the present embodiment is used, for example, in a manner of being applied to hair and not being washed away. Known compositions for such applications include styling products, non-rinse treatments and the like. Here, the "styling agent" is a hair composition used for temporarily holding a hairstyle.

When the oily composition of the present embodiment is used as a hair composition in a mode that does not wash away, it is used by applying it to wet hair or dry hair and drying it. The hair at this time may be any of hair having a history of perm treatment, coloring treatment or bleaching treatment, and hair having no history of those treatments.

Hereinafter, the oily composition according to the present invention will be described based on examples, but the present invention is not limited to the following examples.

(Oil composition)
Polyglyceryl-3-polydimethylsiloxyethyl dimethicone (“KF-6104” manufactured by Shinetsu Silicone Co., Ltd.), PEG-10 dimethicone with HLB4.5, PPG-4-cetes-1, with HLB of 9.5, polyglyceryl isostearate- 2. Laures-2 with an HLB of 9.5, Ores-2 with an HLB of 7.5, Ceteth-7 with an HLB of 11.5, Laures-9 with an HLB of 14.5, water, trehalose, Ingredients selected from PEG-150 (polyethylene glycol having an average added molar number of 150), lauryl betaine, and decamethylcyclopentasiloxane were blended in the blending amounts shown in Table 1 below, and oily compositions of Examples and Comparative Examples were blended. Manufactured. In this production, the above oily composition was produced by performing ultrasonic stirring using an ultrasonic cleaner "ASU-10" manufactured by AS ONE for about 30 minutes.

(exterior)
The oily compositions of Examples and Comparative Examples were injected into a colorless and transparent screw having a diameter of about 4 cm and a capacity of about 100 ml, and then the appearance was visually confirmed. The appearance was confirmed immediately after production and after 50 days at room temperature after production.

Table 1 below shows the components and amounts of the components and amounts blended in the oily compositions of Examples and Comparative Examples, as well as the results of checking the appearance.

Regarding the appearance immediately after production, in Table 1 above, the oily compositions of Examples 1a to 1e corresponding to the present invention were "slightly cloudy" or "transparent", and thus were "white turbid" in Comparative Examples 1a to 1b. It can be confirmed that the dispersibility of water, the surfactant and the like was higher than that of the oily composition of No. 1 (note that the higher the transparency, the higher the dispersibility). And while Example 1a was "slightly cloudy", Examples 1b to 1e were "transparent". This means that the compound of polyglyceryl-3-polydimethylsiloxyethyl dimethicone and the ester of higher fatty acid and diglycerin (Example 1b), polyglyceryl-3-polydimethylsiloxyethyl dimethicone and HLB is 6.5 or more and less than 10.5. Formulation of polyoxyethylene alkyl ether (Examples 1c and 1d), polyether-modified silicone having an HLB of 3.5 or more and less than 6.0 and HLB of 6.5 or more and 10.5 represented by the above general formula (1). The formulation of less than polyoxyethylene polyoxypropylene alkyl ether (Example 1e) means that water, surfactant and the like were easily dispersed in the production process.

The results are shown in Table 1 and FIG. 1 above regarding the appearance after 50 days. That is, since the oily compositions of Examples 1a to 1e corresponding to the present invention are "slightly cloudy" or "transparent", the oily compositions of Comparative Examples 1a to 1b which were "coarse particle precipitation" or "white turbidity". It can be confirmed that the dispersibility of water and surfactants was higher than that of the substances for a long period of time. And while Example 1b was "slightly cloudy", Examples 1a and 1c to 1e were "transparent". This is a combination of polyglyceryl-3-polydimethylsiloxyethyl dimethicone and polyoxyethylene polyoxypropylene alkyl ether having an HLB of 6.5 or more and less than 10.5 (Example 1a), polyglyceryl-3-polydimethylsiloxyethyl dimethicone. And a compound of polyoxyethylene alkyl ether having an HLB of 6.5 or more and less than 10.5 (Examples 1c and 1d), and a polyether having an HLB of 3.5 or more and less than 6.0 represented by the above general formula (1). It means that the compounding of the modified silicone and the polyoxyethylene polyoxypropylene alkyl ether having a HLB of 6.5 or more and less than 10.5 (Example 1e) had high dispersibility of water, a surfactant and the like over a long period of time. do. Comparing the transparency of Examples 1a and 1c to 1e, Example 1a and Example 1e are equivalent, Example 1a is more transparent than Example 1c, and Example 1c is more transparent than Example 1d. The sex was high.

Claims (6)

Contains water, surfactant, and decamethylcyclopentasiloxane.
As the surfactant,
Polyglyceryl-3-polydimethylsiloxyethyl dimethicone and esters of higher fatty acids and diglycerin,
Polyglyceryl-3-polydimethylsiloxyethyl dimethicone and polyoxyethylene polyoxypropylene alkyl ether with an HLB of 6.5 or more and less than 10.5,
Polyglyceryl-3-polydimethylsiloxyethyl dimethicone and polyoxyethylene alkyl ether with HLB of 6.5 or more and less than 10.5, or
A polyether-modified silicone having an HLB of 3.5 or more and less than 6.0 represented by the following general formula (1) and an ester of a higher fatty acid and diglycerin are blended .
An oily composition in which the water is dispersed in an oily medium containing the decamethylcyclopentasiloxane .

[In the above general formula (1), x and y represent integers depending on the molecular weight, and n represents the average number of moles of ethylene oxide added. ] As the surfactant,
Polyglyceryl-3-polydimethylsiloxyethyl dimethicone and esters of higher fatty acids and diglycerin, or
The oily composition according to claim 1, which comprises polyglyceryl-3-polydimethylsiloxyethyl dimethicone and a polyoxyethylene alkyl ether having an HLB of 6.5 or more and less than 10.5. As the surfactant,
Polyglyceryl-3-polydimethylsiloxyethyl dimethicone and polyoxyethylene polyoxypropylene alkyl ether with an HLB of 6.5 or more and less than 10.5, or
The oily composition according to claim 1, which comprises polyglyceryl-3-polydimethylsiloxyethyl dimethicone and a polyoxyethylene alkyl ether having an HLB of 6.5 or more and less than 10.5. The oily composition according to any one of claims 1 to 3, wherein a water-soluble component is blended. The oily composition according to any one of claims 1 to 4, which is applied to hair and used in a manner not to be washed away. A hair treatment method using the oily composition according to claim 5.

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