JP2011213679A - Transparent or translucent composition for external application - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transparent or translucent composition for external application which is capable of including a large amount of components to be solved and reduces the stickiness developed as it gets dry.SOLUTION: The transparent or translucent composition for external application includes components (1) to (5). (1): Components to be solved. (2): Ethanol in an amount of 40-70 mass% of the composition. (3): Polyethylene glycol with an average molecular weight of 200-600 in an amount of 0.3-15 mass% of the composition. (4): Nonionic surfactant with an HLB value of not less than 7 in an amount of 0.01-5 mass% of the composition. (5): Water.

Description

  The present invention relates to a transparent or translucent composition that can be used as a composition for external use such as cosmetics. The external composition of the present invention is suitable as a body cosmetic.

  In a composition for external use used as a solubilized skin external preparation having a transparent or translucent appearance, it is necessary to solubilize solubilized components such as fragrances, oils, and refreshing agents. A surfactant is blended. And as the content of the solubilized component increases, the amount of surfactant required tends to increase accordingly.

  If the content of the solubilized component increases, it may be difficult to ensure the solubilized state only by increasing the amount of the surfactant. In that case, ethanol is added and the solubility of the solvent in the solubilized component is increased. The method of raising is taken.

  In particular, body cosmetics often have a strong aroma, so the amount of flavor added tends to increase, and a refreshing agent such as menthol is often added. Therefore, the ethanol concentration in the preparation tends to increase with the surfactant.

JP 2000-72641 A JP-A-10-194922 Japanese Patent Laid-Open No. 10-287524 Japanese Patent Laid-Open No. 10-298028 Japanese Patent Laid-Open No. 10-238029

  Thus, in order to maintain a solubilized state while containing many solubilized components, it is necessary to mix | blend a surfactant in large quantities. However, since the surfactant causes stickiness at the time of drying, there is a tendency that the usability is deteriorated by a large amount of the surfactant. In particular, when the ethanol concentration in the solvent is high, volatilization of the solvent component is fast, and thus stickiness accompanying drying becomes significant. That is, it is an object of the present invention to provide a transparent or translucent composition for external use that can contain a large amount of solubilized components and that is suppressed from stickiness due to drying.

  In Patent Document 1, while using a polymer with a hydrophobic group having the ability to form a complex of a hydrophilic group and a micelle of a surfactant, and a solubilizer, the amount of the surfactant is reduced. It is disclosed that the solubilized product could be solubilized. However, even in this technique, in a system having a large amount of the solubilized component, the amount of the surfactant must be increased. In particular, in a system with a high alcohol content, it is difficult to suppress the stickiness peculiar to the surfactant.

  Patent Documents 2 to 5 include an alkyl-modified carboxyvinyl polymer and specific components (Patent Document 2 is a hydroxyalkylated cyclodextrin, Patent Document 3 is a Maronier extract and / or Maronier extract powder, Patent Document 3 is a glycyrrhizinate, Patent Document 4 discloses a solubilization technique by combining a gum). However, these technologies can be realized only in a system with a small amount of the solubilized component. When the amount of the solubilized component is large, a solubilized state can be realized without adding a surfactant. It is difficult.

  As a result of investigations aimed at solving the above problems, the present inventor has found that this can be solved by providing the following external composition.

That is, this invention is invention which provides the transparent or translucent external composition (henceforth the composition of this invention) containing the component of following (1)-(5).
(1) Solubilized component,
(2) 40 to 70% by mass of ethanol in the composition,
(3) Polyethylene glycol having an average molecular weight of 200 to 600 is 0.3 to 15% by mass of the composition,
(4) 0.01-5 mass% of a nonionic surfactant having an HLB value of 7 or more,
(5) Water.

  Here, “transparent or translucent composition for external use” means an external composition having a visual appearance that is transparent or translucent, and at least the following solubilized components are in a solubilized state. In the case of a composition that is translucent in appearance, the microemulsion (fine emulsion) state is also included. The external appearance of the composition for external use of the present invention is preferably transparent, and the solubilized component in the composition is preferably in a solubilized state.

  The “solubilized component” means a component to be solubilized or microemulsified with a nonionic surfactant such as a fragrance component, oil, a refreshing agent, an oil-soluble drug, and a peptide. Is. Note that polyoxyethylene that can constitute a nonionic surfactant may be abbreviated as “POE”, and polyoxypropylene may be abbreviated as “POP”.

  The composition of the present invention has the effect that even when a large amount of solubilized components are blended in a system in which ethanol is actively blended, stickiness due to the nonionic surfactant accompanying the drying is sufficiently suppressed. It is a transparent or translucent composition for external use, which is a characteristic feature. This feature of the composition of the present invention is suitable for use as a body cosmetic.

[Essential ingredients]
(1) Solubilized component The solubilized component is not particularly limited, and as described above, one or two or more selected from a fragrance component, an oil component, a refreshing agent, an oil-soluble drug, a peptide, and the like. Different components are mentioned. Examples of the fragrance component include linalool, linalyl acetate, limonene, citrol, methylionone benzyl acetate, methyl dehydrojasmonate, phenylethyl alcohol, musk ketone, sandalol, α-hexylcinnamic aldehyde, TEC, citronellol and the like. Can be mentioned. Examples of the refreshing agent include menthol derivatives such as menthol and lactate menthyl, camphor, and camphor derivatives. In addition, essential oils such as eucalyptus oil and mint (thin load) oil containing these refreshing agents are also preferably used as solubilized components. Other essential oils include bergamot oil, clove oil, geranium oil, lavender oil, lemon oil, lemongrass oil, rosemary oil, tea tree oil, ylang ylang oil and the like. Oil-soluble herbal medicines can also be used. In addition, oil-soluble ultraviolet absorbers, oil-soluble drugs, oil-soluble vitamins, peptides and the like can be mentioned. The range of the amount of the solubilized component in the composition of the present invention varies depending on the type of the component and is not strictly defined, but is about 0.1 to 5% by mass of the composition. Is preferable, and 0.5-2 mass% is more preferable.

(2) Polyethylene glycol having an average molecular weight of 200 to 600 (hereinafter also referred to as specific molecular weight polyethylene glycol)
By blending the polyethylene glycol of a specific molecular weight with the composition of the present invention, it is possible to greatly suppress the stickiness caused by the nonionic surfactant that accompanies drying. This specific molecular weight polyethylene glycol is characterized by being liquid at room temperature. As long as the average molecular weight of the polyethylene glycol used here is in the range of 200 to 600, it does not matter what the breakdown is, but in reality, the molecular weight is 200, 300, One kind selected from 400 and 600 polyethylene glycol, or two or more different combinations. When this average molecular weight exceeds 600, the tendency of polyethylene glycol to become semi-solid at room temperature becomes strong, and it becomes difficult to exhibit the sticking suppression effect. Moreover, 0.3-15 mass% of the composition is preferable, and, as for the compounding quantity in the composition of this invention of specific molecular weight polyethyleneglycol, 0.7-10 mass% is more preferable. If this blending amount is less than 0.3% by mass of the composition, the stickiness-inhibiting effect is not sufficient, and if it exceeds 15% by mass, the tendency of the polyethylene glycol itself to become sticky becomes strong, and the blending amount as a whole It becomes difficult to expect a sticking suppression effect commensurate with the increase.

(3) Nonionic surfactant The nonionic surfactant which can be mix | blended with the composition of this invention will not be specifically limited if a solubilized component can be efficiently solubilized or microemulsified. Specifically, a nonionic surfactant having an HLB value of 7 or more, particularly a nonionic surfactant having an HLB value of 8 to 14 is preferable. On the condition that it has such an HLB value, for example, POE-sorbitan fatty acid esters (for example, POE-sorbitan monooleate, POE-sorbitan monostearate, POE-sorbitan monooleate, POE-sorbitan) POE sorbite fatty acid esters (for example, POE-sorbite monolaurate, POE-sorbite monooleate, POE-sorbite pentaoleate, POE-sorbite monostearate, etc.); POE-glycerin fatty acid esters (For example, POE-glycerol monostearate, POE-glycerol monoisostearate, POE-monooleate such as POE-glycerol triisostearate, etc.); POE-fatty acid esters (eg POE-distearate, POE-monodiolate, distearin) Ethylene glycol, etc.); POE-alkyl ethers For example, POE-lauryl ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, POE-cholestanol ether, etc.); Pluronic type (for example, Pluronic etc.); POP-alkyl ethers (for example, POE / POP-cetyl ether, POE / POP-2-decyltetradecyl ether, POE / POP-monobutyl ether, POE / POP-hydrogenated lanolin, POE / POP-glycerin ether); Tetra-POE / tetra-POP-ethylenediamine condensates (eg, Tetronic, etc.); POE-castor oil hardened castor oil derivatives (eg, POE-castor oil, POE-hardened castor oil, POE-hardened castor oil monoisostearate, POE-hardened castor oil triisostearate, POE-hardened castor oil monopyroglutamic acid monoisostearic acid diester, POE-hardened castor oil POE-beeswax / lanolin derivatives (eg POE-sorbit beeswax); alkanolamides (eg coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide); POE-propylene glycol fatty acid ester POE-alkylamines; POE-fatty acid amides; sucrose fatty acid esters; alkyl ethoxydimethylamine oxides; trioleyl phosphoric acid and the like. Among these nonionic surfactants, POE · POP-alkyl ethers and POE hydrogenated castor oil are particularly preferred, and more specifically, POE (10) · POP (20) 2- Examples include decyl tetradecyl ether and POE (40) hydrogenated castor oil.

  The blending amount of the nonionic surfactant having an HLB value of 7 or more in the composition of the present invention varies depending on the specific blending amount and polarity of the solubilized component, solubilizing or microemulsifying the solubilized component. Although it is not particularly limited as long as it is possible, 0.01 to 5% by mass of the composition is preferable, 0.05 to 3% by mass is more preferable, and 0.1 to 2% by mass. % Is particularly preferred.

(4) Ethanol and water As described above, ethanol can be freely selected in an appropriate amount depending on the characteristics of a specific product in the range of 40 to 70% by mass of the composition. The water may be tap water, purified water, or ion exchange water, and can be blended as the remaining amount of all other blending components.

[Selective ingredients]
The composition of the present invention requires a general component, particularly a water-soluble component, which is blended in a composition for external use such as cosmetics, within a qualitative and quantitative range that does not substantially interfere with the effect of the present invention. It can be blended according to. For example, nonionic surfactants having an HLB value of less than 7, surfactants other than nonionic surfactants, hydrophilic ultraviolet absorbers, hydrophilic agents, humectants such as glycerin and 1,3-butylene glycol, Examples thereof include a thickener, an antioxidant, a pH adjuster, and a sequestering agent.

[Form of composition]
The composition of this invention can be manufactured according to the manufacturing process of a normal solubilization composition. That is, basically, the composition of the present invention can be produced by separately preparing an aqueous phase and an alcohol phase and gradually adding the aqueous phase to the alcohol phase. Moreover, it is not limited to this manufacturing method.

  The composition of the present invention is a solubilized composition for external use, and can be applied to any of cosmetics, pharmaceuticals, and quasi drugs for external use. As the dosage form, a lotion form, a gel form or the like is selected. The use is not particularly limited for hair, face, body, etc., but for the purpose of the present invention, relative to the relative amount of ethyl alcohol blended, the body use that allows a refreshing feel to be used Can be cited as one of the preferred uses.

  EXAMPLES The present invention will be specifically described below with reference to examples, but this is not intended to limit the scope of the present invention. Moreover, a compounding quantity is the mass% with respect to a compounding object unless there is particular notice.

[Test method]
Below, the test method performed in order to verify the effect of this invention is disclosed.
(1) Suppression of stickiness due to drying An appropriate amount of a test product was applied to the upper arm portions of 10 panelists, and the stickiness accompanying drying was evaluated while being familiarized with palms. Evaluation was performed according to the following criteria.

A: Evaluated that 8 or more of 10 people were not sticky.
Δ: It was evaluated that 6 to 7 out of 10 people were not sticky.
X: It was evaluated that only 5 or less of 10 people were not sticky.

(2) Appearance evaluation The test product immediately after preparation was filled in a 5 ml transparent container, and the appearance of each test product was evaluated by visually checking the appearance at room temperature with one specialized panel. Evaluation was performed according to the following criteria.

○: Transparent.
○ △: Translucent so that the opposite side of the container can be seen through.
(Triangle | delta): Although isolation | separation is not recognized, it is a state which the other side of a container cannot see through.
X: Separation is recognized.

[Test example]
Table 1 below discloses the results of the above tests performed on the formulations of the test products (Examples 1 to 13 and Comparative Examples 1 to 5) and the test products. The dosage forms of Examples 1 to 9 and Comparative Examples 1 to 3 are lotions, and the manufacturing method is to prepare alcohol parts and water parts separately, and gradually add water parts to the alcohol parts and mix uniformly. Thus, a test product in a solubilized state or a microemulsified state was prepared. In addition, the dosage forms of Examples 9 to 13 are gels, and the manufacturing method is to prepare alcohol parts and water parts separately, gradually add water parts to the alcohol parts, and mix uniformly. Dimethylacrylamide / sodium acroyldimethyltaurine) crosspolymer was added and mixed uniformly with a disper mixer to obtain a solubilized gel test product. In Table 1, the HLB of POE (10) · POP (20) 2-decyltetradecyl ether is 8.7, and the HLB of POE (40) hydrogenated castor oil is 12.5.

  The products of the present invention (Examples 1 to 13) generally showed good results in both tests. On the other hand, among the comparative products (Comparative Examples 1 to 5), Comparative Examples 1, 4 and 5 were not blended with specific molecular weight polyethylene glycol, and no suppression of stickiness due to drying was observed. In Comparative Example 2, since the average molecular weight of polyethylene glycol was 1000 and it was semi-solid at normal temperature, no suppression of stickiness due to drying was observed. In Comparative Example 3, since 1,3-butylene glycol was used in place of polyethylene glycol, no suppression of stickiness due to drying was observed. In addition, although the evaluation of the external appearance of Example 12 and 13 was evaluation of "(circle) (triangle | delta)" in both examples, specifically, it was slightly turbid so that it could be said to be "substantially transparent".

Below, the formulation example of this invention is disclosed.
[Prescription Example 1] Body Gel
Compounding ingredients amount (% by mass )
(1) Purified water Residue (2) Chelating agent 0.1
(3) 3-octadecyloxy-2-hydroxypropyl 2-hydroxypropylmethylcellulose 1
(4) Polyethylene glycol 400 4
(5) Carbomer 0.1
(6) 2-Amino-2-methyl-1-propanol 0.1
(7) 95 degree alcohol 50
(8) POE (10) · POP (20) 2-decyltetradecyl ether 0.5
(9) Light cargo oil 0.1
(10) Menthol 0.5
(11) Fragrance 0.5

<Manufacturing method>
(Part A): (2) and (3) are mixed in part (1), dissolved by heating, and dispersed with a homomixer.
(Part B): (5) is gradually added to a part of (1), and mixed and dissolved at room temperature all day and night.
(C part): (6) is mixed and dissolved uniformly in a part of (1) at room temperature.
(D part): (8) to (11) are uniformly mixed and dissolved in (7) at room temperature.
To (A part), (4), (B part), (C part), and (D part) are gradually added in order and mixed uniformly to obtain a body gel.

[Prescription Example 2] Refreshing lotion (both body and facial cosmetics)
Compounding ingredients amount (% by mass )
(1) Purified water Residue (2) Glycerin 1.1
(3) Polyethylene glycol 600 5
(4) Lactic acid 0.01
(5) Sodium lactate 0.045
(6) Water-soluble collagen 0.1
(7) Yokuinin extract 0.1
(8) Aloe extract 0.1
(9) 95 degree ethanol 50
(10) Menthol 0.6
(11) Fragrance 0.3
(12) POE (10) · POP (20) 2-decyltetradecyl ether 0.5

<Manufacturing method>
Water parts are prepared by uniformly mixing and dissolving (1) to (8) at room temperature, and alcohol parts are prepared by uniformly mixing and dissolving (9) to (12) at room temperature. Water parts are gradually added to alcohol parts and mixed uniformly to obtain a solubilized refreshing lotion.

Claims (3)

A transparent or translucent external composition containing the following components (1) to (5).
(1) Solubilized component,
(2) 40 to 70% by mass of ethanol in the composition,
(3) Polyethylene glycol having an average molecular weight of 200 to 600 is 0.3 to 15% by mass of the composition,
(4) 0.01-5 mass% of a nonionic surfactant having an HLB value of 7 or more,
(5) Water. The composition for external use according to claim 1, wherein the appearance of the composition is transparent. The external composition according to claim 1 or 2, wherein the external composition is a body cosmetic.