JP4134073B2 - Moisturizing composition - Google Patents

Description

  The present invention relates to a homogeneous non-aqueous composition having a moisturizing action.

  Moisturizing is an important function for cosmetics and a basic function of skin care. Highly moisturizing ingredients are hydrophilic, and many excellent moisturizing products have been developed for water-based emulsified products and water-based products, but oil-based products still have no excellent products, and their development is strong. It is desired.

  Two methods are conceivable as methods for imparting moisture retention to oily products. One is to create a continuous film of oil on the skin, and to provide moisture retention with a sealing effect that shields moisture from the body, and the other is to retain moisture in oil products. It is a method to make it. However, the former method using shielding is ineffective when the film is removed, and thus the moisture retention cannot be maintained for a long time. Moreover, about the latter, there exists what is trying to give water retention to an oil agent and to give moisture retention by this function, and some water-containing oil agents are also developed (for example, refer patent documents 1 and 2). . For example, it is disclosed that a dimer diol derivative has a water retention equivalent to or higher than that of lanolin, which is known to have excellent water retention (Patent Document 1), and cholesteryl ester. And / or cosmetics containing a cholesteric liquid crystal mainly composed of cholesteryl ester and a conchiolin hydrolyzate have been disclosed to have a moisturizing effect (Patent Document 2), but none of the moisturizing effect is sufficient. The effect in the non-aqueous composition is not clear. Further, the cosmetic disclosed in Patent Document 2 does not have a sustained effect.

JP 2003-313149 A Japanese Patent No. 2807529

  Although an attempt to add a polyhydric alcohol such as glycerin having high moisturizing property to the oil agent to give the oil agent a moisturizing property can be considered, a homogeneous and stable product cannot be obtained. As described above, at present, there is nothing that satisfies the homogeneous and stable non-aqueous composition having a moisturizing action.

  This invention is made | formed in view of the said situation, The objective is to provide the homogeneous and stable non-aqueous composition which has the moisturizing effect containing the polyhydric alcohol which has moisturizing property.

  As a result of diligent research to solve the above-mentioned problems, the present inventor blended, together with a polyhydric alcohol, a methylphenyl polysiloxane oil, a liquid oil other than the methylphenyl polysiloxane oil, and a specific amount of fine anhydrous silica. Thus, by preparing a non-aqueous composition, it was found that a stable non-aqueous composition having a homogeneous and moisturizing action was obtained, and that the above problems were solved, and the present invention was completed.

That is, the present invention is a liquid oil containing at least 2 to 80% by weight of methylphenyl polysiloxane oil, 1 to 10% by weight of fine anhydrous silica having an average particle size of 7 to 40 nm and a polyvalent amount in the total amount of the composition. alcohol is a moisturizing nonaqueous composition for homogeneous cosmetic comprising 5 to 75 wt%.

  In the present invention, “homogeneous” refers to a state in which two phases or multiple phases are not separated at room temperature (25 ° C.).

  In the present invention, transparent, translucent, and opaque represent the state of appearance. A transparent color having an L value of 40 or more is referred to as “transparent to translucent”, and a transparent color of less than 40 is referred to as opaque. “L value of transmitted color” means the L value of data obtained by measuring transmitted color (25 ° C.) with a spectroscopic color difference meter (at 25 ° C.). In the present invention, the transmitted color was measured using a spectroscopic color difference meter SE-2000 (manufactured by Nippon Denshoku). The “non-aqueous composition” refers to a composition that does not contain water, but does not exclude the inclusion of a small amount of water that is contained in the raw material or contained to dissolve the raw material.

  Volatile means a property at normal pressure. Moreover, solid, solid form, and liquid state represent the state at normal temperature.

  Further, in the present invention, the “containing composition” means that other components can be added within a range that does not affect the intended result, and this term is the term “composition consisting of”. And “a composition consisting essentially of”.

  According to the present invention, a polyhydric alcohol can be blended stably and uniformly into a non-aqueous composition, and a homogeneous and stable non-aqueous composition having a moisturizing action can be obtained. The moisturizing composition is widely used in cosmetics and the like as an oily moisturizing agent.

  Hereinafter, the best mode for carrying out the present invention will be described in detail.

  In the present invention, a liquid oil containing at least methylphenyl polysiloxane oil is used. The methylphenylpolysiloxane oil used in the present invention is a liquid oil generally used in cosmetics and the like. Since methyl phenyl polysiloxane oil is commercially available, a commercially available product can be used. Examples of commercially available products include KF-56 (manufactured by Shin-Etsu Chemical Co., Ltd.), TSF437 (manufactured by Toshiba Silicone Co., Ltd.), SH556 (manufactured by Toray Dow Corning Silicone Co., Ltd.) and the like.

  In this invention, it is preferable that content of methylphenyl polysiloxane oil is 2-80 mass% in the composition whole quantity. In the present invention, when the methylphenyl polysiloxane oil is contained in the composition at the above content, sufficient effects of the present invention can be obtained.

  Liquid oils other than methylphenylpolysiloxane oil used in the present invention (hereinafter referred to as “other liquid oils”) are liquid oils generally used in cosmetics and the like, such as ester oils, higher alcohols, Examples include hydrocarbon oils, silicone oils other than methylphenylpolysiloxane oil, fluorine compounds, higher fatty acids and the like.

  Examples of the ester oil include polyhydric alcohol fatty acid esters, higher fatty acid alcohol esters, dibasic alcohol diesters, oxyacid alcohol esters, and fats and waxes.

  Examples of the polyhydric alcohol constituting the polyhydric alcohol fatty acid ester include glycol, glycerin, diglycerin, polyglycerin, trimethylolpropane, pentaerythritol, and sorbitol. Among these, polyhydric alcohols having at least 3 (preferably 3 to 6) hydroxyl groups in one molecule are preferable. On the other hand, the fatty acid is preferably a branched or unsaturated fatty acid having 16 to 22 carbon atoms. Preferable polyhydric alcohol fatty acid esters include triester of glycerin, diester of diglycerin, triester or tetraester.

  The higher fatty acid constituting the higher fatty acid alcohol ester is preferably a linear or branched saturated fatty acid having 8 to 18 carbon atoms, and more preferably a linear saturated fatty acid having 14 to 18 carbon atoms. On the other hand, the alcohol is preferably a linear or branched aliphatic alcohol having 3 to 20 carbon atoms, more preferably a linear or branched aliphatic alcohol having 8 to 16 carbon atoms.

  The dibasic acid constituting the alcohol diester of the dibasic acid is preferably a dibasic acid having 6 to 8 carbon atoms. On the other hand, the alcohol is preferably a linear or branched aliphatic alcohol having 3 to 8 carbon atoms.

  As the oxyacid constituting the alcohol ester of oxyacid, malic acid is preferable. On the other hand, the alcohol is preferably a branched or unsaturated aliphatic alcohol having 16 to 22 carbon atoms. The ester is preferably a diester of malic acid, and more preferably a diester of a branched or unsaturated aliphatic alcohol having 16 to 22 carbon atoms of malic acid.

  Specific examples of the ester oils include polyhydric alcohol fatty acid esters such as neopentyl glycol dicaprate (glycol ester), glyceryl tri-2-ethylhexanoate, glyceryl triisostearate (glyceryl ester), diisostearate. Diglyceryl acid, diglyceryl triisostearate, diglyceryl tetraisostearate, triglyceryl diisostearate (di- and polyglycerin esters), pentaerythrityl tetraisostearate, pentaerythritol tetra-2-ethylhexanoate, pentaoctyl dioctanoate Erytrit (above, pentaerythritol ester), tri-2-ethylhexanoic acid trimethylolpropane, triisostearic acid trimethylolpropane (above, trimethylolpropane) Trimethylolpropane ester) and the like.

  Examples of the higher fatty acid alcohol ester include isopropyl myristate, isopropyl palmitate, cetyl 2-ethylhexanoate, octyldodecyl myristate, octyl stearate, octyl palmitate, and the like.

  Examples of dibasic acid alcohol diesters include diisopropyl adipate and di-2-ethylhexyl sebacate.

  Examples of the alcohol ester of oxyacid include diisostearyl malate.

  Examples of the oils and waxes include oils and fats such as olive oil, castor oil, macadamia nut oil and evening primrose oil, waxes such as jojoba oil and liquid lanolin, and the like.

  Other examples include dimer acid esters (trade name: Rusplan), glutamate esters (trade name: El Dew), and the like.

  Further, the higher alcohol is preferably a branched or unsaturated aliphatic alcohol having 16 to 22 carbon atoms. Specific examples include isostearyl alcohol, oleyl alcohol, octyldodecanol and the like.

  Examples of the hydrocarbon oil include liquid paraffin, squalane, polybutene, and volatile hydrocarbon oil. Examples of the volatile hydrocarbon oil include isobutene and isoparaffin.

  Examples of silicone oils other than the methylphenyl polysiloxane oil include liquid chain polysiloxanes such as dimethylpolysiloxane, liquid modified polysiloxanes such as amino-modified polysiloxane, alkyl-modified polysiloxane, and fluorine-modified polysiloxane, and octamethylcyclohexane. Examples thereof include cyclic silicones such as tetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane.

  Examples of the fluorine compound include perfluoropolyether.

  Examples of the higher fatty acid include isostearic acid and oleic acid.

  One or two or more other liquid oils in the present invention are arbitrarily selected and used.

  Although content of other liquid oil is not specifically limited, 5-80 mass% is preferable in the composition whole quantity. More preferably, it is 10-70 mass%.

Furthermore, fine anhydrous silica is used in the present invention. Silica groups are present on the surface of anhydrous silica, and fine anhydrous silica generally used in cosmetics and the like is used. The fine particulate anhydrous silica may be either hydrophilic as it is or hydrophobic, such as silylated silica that has been hydrophobized by a hydrophobization treatment. The particle size of the fine particle anhydrous silica is preferably 7 to 40 nm in terms of the average particle size as the primary particle size. A specific surface area of 50 to 380 m ² / g is preferable. Since the particulate anhydrous silica is commercially available, it is possible to use a commercially available product. Examples of commercially available products include Aerosil R-974, 200, R-812, 130, 90G, 50, 300, and R972 (above, Nippon Aerosil Co., Ltd.). By containing fine particulate anhydrous silica, a liquid oil and a polyhydric alcohol can be homogenized to obtain a stable non-aqueous composition.

  The content of the particulate anhydrous silica is 1 to 10% by mass, preferably 3 to 8% by mass, based on the total amount of the composition. In the present invention, the effect of the present invention can be exhibited only when the fine particulate anhydrous silica is contained in the composition at the above content.

  The polyhydric alcohol used in the present invention is a polyhydric alcohol generally used for cosmetics and the like. The number of hydroxyl groups is preferably 2-6. Specific examples of the polyhydric alcohol include, for example, 1,3-butylene glycol, propylene glycol, trimethylene glycol, 1,2-butylene glycol, tetramethylene glycol, 2,3-butylene glycol, pentamethylene glycol. 2-butene-1,4-diol, hexylene glycol, octylene glycol (divalent alcohol), glycerin, trimethylolpropane (trivalent alcohol), pentaerythritol (tetravalent alcohol), xylitol (pentahydric alcohol) ), Sorbitol, mannitol (hexahydric alcohol), dipropylene glycol, triethylene glycol, polypropylene glycol, tetraethylene glycol, diglycerin, polyethylene glycol (hereinafter referred to as PEG), triglycerin. Tetraglycerol, polyglycerol (polyhydric alcohol polymer), and the like. The PEG is a PEG generally used for cosmetics and the like. Since PEG is commercially available, a commercially available product can be used. As an example of a commercial item, PEG200, 300, 600, 1000, 3000, 6000 (above, Nikko Chemicals Co., Ltd.) etc. are mentioned, for example. Among these PEGs, PEG 200 to 600 is preferable. One or more polyhydric alcohols are arbitrarily selected and used.

  The content of the polyhydric alcohol is not particularly limited, and is arbitrarily selected and contained within a range in which the total amount of the composition becomes 100% by mass in relation to other components. -75 mass%. In the present invention, it is preferable to blend 5% by mass or more of the polyhydric alcohol because the blending effect of the polyhydric alcohol is sufficiently exhibited. Moreover, more preferable content is 10-70 mass% in the composition whole quantity.

  The non-aqueous composition containing the above essential components according to the present invention is a composition in which polyhydric alcohol is uniformly contained in the oil, and has an excellent moisturizing action. Therefore, the non-aqueous composition according to the present invention is useful as a homogeneous moisturizing non-aqueous composition having a stratum corneum moisture retention ability.

  You may mix | blend another arbitrary component with the said composition which concerns on this invention in the range which does not impair the effect of this invention.

  Examples of the optional ingredients include oils other than those described above, humectants, oil gelling agents, powders, lower alcohols, sugars, ultraviolet absorbers, amino acids, vitamins, whitening agents, skin activators, blood circulation promoters, Examples include drugs such as antiseborrheic agents and anti-inflammatory agents (anti-inflammatory agents), plant extracts, sequestering agents, preservatives, fragrances, and water. Of the optional blending components, water is a non-aqueous composition in which water is not substantially blended. If a large amount of water is blended, the effects of the present invention are not exhibited, and this is not a preferred embodiment.

  In producing the non-aqueous composition containing the above essential components according to the present invention, the method is not particularly limited. For example, methylphenylpolysiloxane oil, other liquid oil, polyhydric alcohol are mixed, and then It is prepared by adding fine particulate anhydrous silica to this, stirring and mixing with a disper or the like, and deaeration. In addition, when mix | blending other arbitrary compounding components, it mix | blends suitably according to the general compounding method, and is prepared. Moreover, you may add another liquid oil, before a part is stirred and mixed with the said disper.

  The homogeneous moisturizing non-aqueous composition according to the present invention has a wide application range as an oily moisturizing agent, and can be widely applied to, for example, pharmaceuticals, quasi drugs, cosmetics and the like. In particular, application as a cosmetic is a preferred embodiment because the effects of the present invention can be further utilized.

  Examples of the cosmetics include facial cleansers, eye corner cosmetics, nail care cosmetics, liquid body cleansers, sun care products, hand care products, lip care products, makeup cleansings and the like. Since the composition of the present invention has a moisturizing function, skin care products that particularly require moisturizing properties, especially cosmetics around the eyes, lips, and nails that are susceptible to drying, cosmetics for nails, etc. It can be applied to and keeps an appropriate amount of moisture, and can be protected from damage from drying.

  Hereinafter, the present invention will be specifically described with reference to examples. The blending amount is mass% unless otherwise specified. Prior to the description of the examples, the effect test method used in the present invention will be described.

1. Homogeneity After preparing the sample, the sample was filled in a transparent bottle and stored at room temperature of 25 ° C. for 1 day, and then the state of the sample was visually observed under the same atmosphere (25 ° C.), and evaluated according to the following criteria.

(Evaluation criteria)
A: Not separated into two phases or multiple phases.
X: Separated into two phases or multiple phases.

2. Stability After the sample was prepared, the sample was filled in a transparent bottle and stored in a thermostatic bath at 25 ° C. for 1 month. The state was visually observed and evaluated according to the following criteria.

(Evaluation criteria)
A: Not separated into two phases or multiple phases.
X: Separated into two phases or multiple phases.

3. Moisturizing effect (measurement method)
After washing the inside of the lower arm of a subject who has been kept in an atmosphere of 20 ° C. and 50% humidity for 30 minutes or more with soap, a sample application part and a sample non-application part are provided in a range of 2.5 cm × 6 cm inside the lower arm. A 25 mg sample was applied to the sample application part, and each part was subjected to a stratum corneum film thickness / moisture meter ASA-M1 (manufactured by Asahi Biomed) under the following measurement conditions. The conductivity (μs) representing was measured. Sustained moisture retention was evaluated from the change behavior of the measurement results.

(Measurement condition)
1. The measurement was performed before sample application (after washing) and 3 hours after application. The measurement after 3 hours was performed after wiping the sample with cotton.
2. In the result determination, the continuous moisture retention was evaluated by the rate of change in conductivity (the following formula) before and after application of the sample in the sample application part. In addition, it has been confirmed that there is no change in the conductivity before application of the sample and after 3 hours after application in the uncoated sample portion.

  [(Conductivity after 3 hours after application-conductivity before sample application) / conductivity before sample application] x 100 (%)

4). Transparency After the sample was prepared, the sample was filled in a transparent bottle, stored at room temperature of 25 ° C. for 1 day, and then the L value of the transmitted color of the sample was measured (25 ° C.) under the same atmosphere (25 ° C.). Next, transparency was evaluated from the value of L according to the following criteria. The L value was measured with a spectroscopic color difference meter SE-2000 manufactured by Nippon Denshoku.

(Evaluation criteria)
○: Transparent to translucent (L value is 40 or more)
X: Opaque (L value less than 40)

[Examples 1-20, Comparative Examples 1-8]
The composition of the components and blending amounts shown in Tables 1 to 4 (total blending amount of 100% by mass) was prepared by the following method. In the table, (Note 1) used KF-56 (manufactured by Shin-Etsu Chemical Co., Ltd.) and (Note 2) used Aerosil R974 (manufactured by Nippon Aerosil Co., Ltd.). In addition, the effect test result of the composition of Examples 1-20 and Comparative Examples 1-8 was shown to the same Tables 1-4.

(Preparation method)
Example 1 To 1,3-butylene glycol (polyhydric alcohol), methylphenylpolysiloxane oil was added, mixed and dispersed. Subsequently, fine particle anhydrous silica and glyceryl triisostearate (another liquid oil) were added, stirred and mixed with a disper, and vacuum degassed to prepare. Example 2 The following examples and comparative examples were prepared according to Example 1.

(Note 3) LUSPLAN PI-DA (manufactured by Nippon Seika Co., Ltd.)

  As can be seen from Tables 1 to 3, the homogeneous non-aqueous compositions of Examples 1 to 20 prepared by blending the methylphenyl polysiloxane oil according to the present invention, other liquid oils, and an appropriate amount of fine particulate anhydrous silica, All had an excellent moisturizing effect.

      “-” In the effect data indicates that the experiment was not performed.

  On the other hand, as can be seen from Table 4, both the composition in which the blend amount of the fine particle anhydrous silica according to the present invention deviates from the proper amount and the composition without the blending of the essential components exhibit the effects of the present invention. It was not obtained.

  Hereinafter, application examples of the composition according to the present invention will be shown as examples of the present invention. In addition, manufacture was performed according to the method of the said Example. Moreover, when the said effect test was done in these, the outstanding result was obtained in all.

[Example 21] Lip care component content (mass%)
Malic acid diisostearate 41.8
Methylphenyl polysiloxane oil (Note 1) 25.0
Jojoba oil 1.0
Squalane 1.0
Octyl methoxycinnamate 1.0
Stearyl glycyrrhetinate 0.1
Dl-α-tocopherol acetate 0.1
Dipropylene glycol 25.0
Trimethylglycine 1.0
Fine particulate anhydrous silica (silylated silica) (Note 2) 4.0
Total 100.0

(Note 1) KF-56 (Shin-Etsu Chemical Co., Ltd.)
(Note 2) Aerosil R974 (Nippon Aerosil Co., Ltd.)

[Example 22] Wrinkle care component content (mass%)
Methylphenyl polysiloxane oil (Note 4) 35.0
Squalane 21.8
Jojoba oil 3.0
Glyceryl tri-2-ethylhexanoate 5.0
Ascorbic acid tetrapalmitate 1.0
Stearyl glycyrrhetinate 0.1
Dl-α-tocopherol acetate 0.1
1,3-butylene glycol 29.0
Trimethylglycine 1.0
Fine particulate anhydrous silica (Note 5) 4.0
Total 100.0

(Note 4) TSF437 (Toshiba Silicone Co., Ltd.)
(Note 5) Aerosil 200 (manufactured by Nippon Aerosil Co., Ltd.)

[Example 23] Nail care component content (mass%)
Methylphenyl polysiloxane oil (Note 6) 35.0
Diglyceryl diisostearate 8.0
Octyl palmitate 12.8
Jojoba oil 1.0
Stearyl glycyrrhetinate 0.1
Dl-α-tocopherol acetate 0.1
Glycerin 39.0
Trimethylglycine 1.0
Fine particulate anhydrous silica (silylated silica) (Note 2) 3.0
Total 100.0

(Note 6) SH556 (Toray Dow Corning Silicone Co., Ltd.)
(Note 2) Aerosil R974 (Nippon Aerosil Co., Ltd.)

[Example 24] Makeup cleansing component content (mass%)
Methylphenyl polysiloxane oil (Note 1) 20.0
Isononyl isononanoate 5.0
Octyl palmitate 32.0
Liquid paraffin 10.0
Dimethylpolysiloxane (6cs) 10.0
Sorbitol (90% aqueous solution) 19.0
Trimethylglycine 1.0
Fine particulate anhydrous silica (silylated silica) (Note 2) 3.0
Total 100.0

(Note 1) KF-56 (Shin-Etsu Chemical Co., Ltd.)
(Note 2) Aerosil R974 (Nippon Aerosil Co., Ltd.)

[Example 25] Hand care ingredient blending amount (% by mass)
Methylphenyl polysiloxane oil (Note 1) 32.0
Squalane 19.8
Jojoba oil 2.0
Olive oil 1.0
Macadamia nut oil 1.0
Stearyl glycyrrhetinate 0.1
Dl-α-tocopherol acetate 0.1
PEG300 39.0
Trimethylglycine 1.0
Fine particulate anhydrous silica (silylated silica) (Note 7) 4.0
Total 100.0

(Note 1) KF-56 (Shin-Etsu Chemical Co., Ltd.)
(Note 7) Aerosil R-812 (manufactured by Nippon Aerosil Co., Ltd.)

[Example 26] Hair conditioner component content (mass%)
Methylphenyl polysiloxane oil (Note 1) 10.0
Macadamia nut oil 32.0
Dimethylpolysiloxane (6cs) 10.8
Jojoba oil 2.0
Olive oil 1.0
Stearyl glycyrrhetinate 0.1
Dl-α-tocopherol acetate 0.1
Diglycerin 39.0
Trimethylglycine 1.0
Fine particulate anhydrous silica (silylated silica) (Note 2) 4.0
Total 100.0

(Note 1) KF-56 (Shin-Etsu Chemical Co., Ltd.)
(Note 2) Aerosil R974 (Nippon Aerosil Co., Ltd.)

[Example 27] Lipstick component content (mass%)
Methylphenyl polysiloxane oil (Note 1) 10.0
Diglyceryl diisostearate 5.0
Diisostearyl malate 32.8
Octyl palmitate 1.0
Jojoba oil 1.0
Stearyl glycyrrhetinate 0.1
Dl-α-tocopherol acetate 0.1
Glycerin 23.0
Fine particulate anhydrous silica (silylated silica) (Note 2) 1.0
Trimethylglycine 1.0
Candelilla Row 6.0
Polyethylene wax 5.0
Microcrystalline wax 1.0
Coloring material 6.0
Pearl material 7.0
Total 100.0

(Note 1) KF-56 (Shin-Etsu Chemical Co., Ltd.)
(Note 2) Aerosil R974 (Nippon Aerosil Co., Ltd.)

[Example 28] Cream foundation component Amount (% by mass)
Methylphenyl polysiloxane oil (Note 1) 15.0
Squalane 12.8
Octyl palmitate 5.0
Glyceryl tri-2-ethylhexanoate 10.0
Ascorbic acid tetrapalmitate 1.0
Stearyl glycyrrhetinate 0.1
Dl-α-tocopherol acetate 0.1
1,3-butylene glycol 18.0
Fine particulate anhydrous silica (silylated silica) (Note 2) 2.0
Candelilla Row 6.0
Spherical silica 10.0
Talc 2.0
Color material 18.0
Total 100.0

(Note 1) KF-56 (Shin-Etsu Chemical Co., Ltd.)
(Note 2) Aerosil R974 (Nippon Aerosil Co., Ltd.)

Claims (1)

Liquid oil containing at least 2 to 80% by weight of methylphenylpolysiloxane oil, 1 to 10% by weight of fine anhydrous silica having an average particle size of 7 to 40 nm and 5 to 75 % of polyhydric alcohol in the total amount of the composition % Moisturizing non-aqueous composition for cosmetics .