JP6231748B2 - Oily solid cosmetic - Google Patents

Description

  The present invention relates to an oily solid cosmetic.

  Translucent cosmetics give the product a soft impression by diffusing light. In cosmetics containing pigments, the base material is translucent, so that the original color of the pigment is easily produced and the glossiness of the pearl pigment is improved. For this reason, cosmetics comprising a base material with improved appearance transparency are required.

  Conventionally, waxes have been blended mainly for the purpose of improving moldability when producing oily solid cosmetics. However, it is known that when wax is used for an oily solid cosmetic, the cosmetic becomes cloudy and the transparency cannot be improved. For this reason, conventionally, in order to improve transparency, wax is not blended or the wax content is kept as low as possible, and gelling agents such as dextrin fatty acid esters and various polymers are used instead of wax. It has been proposed to obtain hardness, moldability, shape stability, and the like as an oily solid cosmetic (see Patent Document 1 and Patent Document 2). In addition, it has been proposed to make a translucent oily solid cosmetic transparent by using a specific wax (see Patent Document 3).

JP 2010-90079 Special Table 2003-520218 JP 2004-26712 A

  In the case where the transparency of the oily solid cosmetic is improved by using a gelling agent such as dextrin fatty acid ester or various polymers, it is difficult to obtain the required strength and stability in order to improve the feeling of use. That is, when a gelling agent or the like is used, it is difficult to obtain quality required as an oily solid cosmetic other than transparency. On the other hand, if a specific wax is used, the wax that can be used is limited, and it is difficult to obtain the quality required for oily solid cosmetics other than transparency. In order to maintain the quality required as an oily solid cosmetic other than transparency, for example, the feeling of use and hardness, an oily solid cosmetic containing a wax and having transparency is desirable.

  That is, the subject of this invention is providing the prescription which improves the transparency of oil-based solid cosmetics, solidifying mainly with a wax.

  As a result of intensive studies, the present inventors have found that the above problem can be solved by mixing a predetermined amount of a phenyl group-containing polyorganosiloxane with a wax, and have completed the present invention.

  That is, according to the oily solid cosmetic composition of the present invention, it comprises mainly 3 to 20% by mass of a solid wax at room temperature and 20 to 97% by mass of a phenyl group-containing polyorganosiloxane. Transparency can be improved even in a formulation for solidification.

  In the oily solid cosmetic of the present invention, transparency can be more reliably improved when the phenyl group-containing polyorganosiloxane is at least one of diphenylsiloxyphenyl trimethicone or phenylpropyldimethylsiloxysilicate.

  Furthermore, in the oily solid cosmetic of the present invention, the phenyl group-containing polyorganosiloxane is diphenylsiloxyphenyl trimethicone, whereby the transparency can be improved in many types of waxes.

  Furthermore, in the oily solid cosmetic of the present invention, the wax is a hydrocarbon wax having a melting point of 70 ° C. or higher, whereby the stability of the oily solid cosmetic can be improved.

  In the oily solid cosmetic, when the phenyl group-containing polyorganosiloxane is 50 to 97% by mass, the transparency of the cosmetic can be ensured without making the wax cloudy.

  Furthermore, in the oily solid cosmetic of the present invention, by further including an ultraviolet absorber, the transparency can be improved even if an ultraviolet absorber that generally causes white turbidity is contained.

  In the oily solid cosmetic of the present invention, the ultraviolet absorber is at least selected from the group consisting of ethylhexyl methoxycinnamate, bisethylhexyl hydroxydimethoxybenzyl malonate, diethylhexylsyringin malonate, butyloctyl salicylate, and ethylhexyl salicylate. By including one, transparency can be improved regardless of the content of the UV absorber.

  In the oily solid cosmetic of the present invention, the ultraviolet absorber is ethylhexyl methoxycinnamate, so that the transparency can be improved regardless of the content in many types of waxes.

  In the oily solid cosmetic containing the ultraviolet absorber, the phenyl group-containing polyorganosiloxane is 20 to 70% by mass, so that the transparency of the cosmetic can be ensured without making the wax cloudy.

  According to the oily solid cosmetic according to the present invention, transparency can be improved while maintaining solidity using a wax.

  Hereinafter, the present invention will be described in detail with reference to embodiments. However, the following embodiments do not limit the present invention.

  In one embodiment, the present invention is an oily solid cosmetic, (A) a wax that is solid at room temperature of 3 to 20% by mass, and (B) 20 to 97% by mass of a phenyl group-containing polyorganosiloxane. Comprising.

(A) Wax Solid wax at normal temperature is included in the oily solid cosmetic according to the present embodiment as an essential component. “Solid at normal temperature” usually means that the melting point is about 40 ° C. or higher. The wax may be any wax that is normally used in cosmetics and is solid at room temperature. The wax may be composed of only one type, or may be a mixture of two or more types.

  Specific examples of waxes include at least one carbon selected from synthetic hydrocarbon waxes (eg, Fischer-Tropsch wax, polyethylene wax), ceresin wax, paraffin, carnauba wax, candelilla wax, microcrystalline wax, ethylene propylene copolymer. Examples include, but are not limited to, hydrogen wax, hydrogenated jojoba ester, beeswax, mole, owl, hydrogenated castor oil, rice bran wax.

Among these, a synthetic hydrocarbon wax having a melting point of 70 ° C. or higher is preferable from the viewpoint of stability. Specific examples include Fischer-Tropsch wax and polyethylene wax.
The wax is contained in an amount of 3 to 20% by mass when the total mass of the oily solid cosmetic is 100%. This is because when it is less than 3% by mass, the strength and stability are lowered, and when it is more than 20% by mass, the transparency is lowered. In addition, when two or more types of waxes are included, the total mass of the plurality of waxes is within the above range.

(B) Phenyl group-containing polyorganosiloxane The phenyl group-containing polyorganosiloxane is contained in the oily solid cosmetic according to the present embodiment as an essential component. The phenyl group-containing organopolysiloxane is a phenyl-modified silicone in which part of the alkyl group bonded to Si of the organopolysiloxane is a phenyl group. The phenyl group-containing organopolysiloxane is a non-volatile oil. The said phenyl group containing organopolysiloxane can use 1 type (s) or 2 or more types.

Examples of the phenyl group-containing organopolysiloxane include methylphenyl silicone oil in which a part of the methyl group of dimethicone, which is dimethylpolysiloxane, is substituted with a phenyl group. Specific examples of the methylphenyl silicone oil include diphenylsiloxyphenyl trimethicone. The viscosity of diphenylsiloxyphenyl trimethicone is preferably 10 to 30 mm ² / s (25 ° C.). Commercially available products can be used as the phenyl group-containing organopolysiloxane (phenyl-modified silicone). Examples of commercially available products include KF56A (viscosity 10-20 mm ² / s (25 ° C.), Shin-Etsu Chemical Co., Ltd. Manufactured).

  Another example of the phenyl group-containing organopolysiloxane is phenylpropyldimethylsiloxysilicate.

  As the phenyl group-containing polyorganosiloxane, it is preferable to use at least one of the above-mentioned diphenylsiloxyphenyl trimethicone and phenylpropyldimethylsiloxysilicate from the viewpoint of more reliably improving the transparency. Moreover, it is preferable to use diphenylsiloxyphenyl trimethicone from the viewpoint of good mixing characteristics with more waxes.

  The phenyl group-containing polyorganosiloxane is contained in an amount of 20 to 97% by mass when the total mass of the oily solid cosmetic is 100%. If it is less than 20% by mass, the transparency is lowered, and if it is more than 97% by mass, the hardness is lowered and the stability is lowered. The preferred content of the phenyl group-containing polyorganosiloxane may vary depending on the content of the wax and the content of optional components. In the present embodiment, the phenyl group-containing polyorganosiloxane is preferably included in an amount of 50 to 97% by mass, and in an amount of 50 to 80% by mass, when the mass of the entire oily solid cosmetic is 100%. More preferably it is included.

  The oily solid cosmetic according to the present embodiment is composed of the above (A) wax and (B) phenyl group-containing polyorganosiloxane, and may not contain other components. The (A) wax and the (B) phenyl group-containing polyorganosiloxane may be collectively referred to as the base material of the oily solid cosmetic according to the present embodiment. The oily solid cosmetic according to this embodiment includes the above (A) wax and (B) a phenyl group-containing polyorganosiloxane, and may further include other components. Regardless of the form, the oily solid cosmetic according to this embodiment comprising a predetermined amount of wax and a phenyl group-containing polyorganosiloxane improves transparency while maintaining solidity with the wax. Can do. That is, it has a translucent and beautiful appearance without causing the problem of turbidity due to wax as in the prior art, and has the hardness, moldability and shape stability required for oily solid cosmetics.

  In the oily solid cosmetic according to the present embodiment, the optional components can include the following.

(C) Pigment In an embodiment, the oily solid cosmetic may include a pigment as an optional component. As the pigment, any pigment usually used in cosmetics can be used. Specific pigments include, for example, titanium dioxide, zinc oxide, iron oxide (Bengara etc.), ultramarine, bitumen, pearl pigments (titanium mica, synthetic phlogopite pearl, borosilicate (Ca / Al) pearl, etc.), aluminum powder , Synthetic mica, organic dyes such as red 104, red 201, red 202, red 226, yellow 4, yellow 5, orange 204, blue 404, blue 1 and lakes thereof. However, it is not limited to these.

  In the oily solid cosmetic containing a pigment, the pigment is preferably contained in an amount of 0.001 to 20% by mass, when the total mass of the oily solid cosmetic is 100%, 0.01 to 10% by mass. More preferably, it is contained in an amount of%. However, the pigment content is not limited to the above range, and can be appropriately determined by those skilled in the art in relation to other components.

  In the oily solid cosmetic containing the pigment according to the present embodiment, since the transparency of the base material is improved, the original color of the pigment and the pearly luster are sufficiently alive, and the oily solid cosmetic with improved color development It can be. In oily solid cosmetics such as sticks according to the prior art, the whole is clouded under the influence of the white or pale yellow of a wax that is originally opaque, and the original color of the pigment and the glossiness of the pearl pigment are lost. As a result, in this embodiment, the transparency of the base material is improved, so that the characteristics of the pigment are utilized.

(D) Oil agent other than phenyl group-containing polyorganosiloxane In another embodiment, the oily solid cosmetic may include an oil agent as an optional component. As the oil agent, an oil agent that is liquid at room temperature other than the phenyl group-containing polyorganosiloxane that is usually used in cosmetics can be used. As an oil agent, vegetable oil can also be used and liquid oils other than vegetable oil can also be used.

  Examples of vegetable oils include, for example, safflower oil, soybean oil, grape seed oil, sesame oil, wheat germ oil, avocado oil, olive oil, olive squalane, castor oil, macadamia nut oil, medfoam oil, sunflower oil, palm oil, almond Oil, rosehip oil, apricot oil, sasanqua oil, camellia oil, evening primrose oil, etc., plant-derived triglycerides such as glyceryl triisostearate, tri (capryl / capric acid) glyceryl, dimer diol or dimer acid esters It is done.

  One kind of vegetable oil may be used, or two or more kinds may be arbitrarily selected and blended. The vegetable oil can be used as it is, but it is preferable in view of oxidation stability to use a refined vegetable oil from which polyvalent fatty acids contained in the vegetable oil are removed.

Examples of liquid oils other than vegetable oils include animal oils such as mink oil, turtle oil and liquid lanolin, hydrogenated polyisobutene, liquid paraffin, squalane, heavy liquid isoparaffin, hydrocarbons such as polybutene, isopropyl myristate, isostearic acid. Fatty acid esters of lower alcohols such as isopropyl acid, lanolin fatty acid isopropyl, 2-ethylhexyl isononanoate, octyldodecyl myristate, octyldodecyl oleate, cetyl 2-ethylhexanoate, isocetyl 2-ethylhexanoate, isostearyl isostearate Fatty acid esters of higher alcohols, oxyacid esters of higher alcohols such as diisostearyl malate, cetyl lactate, glyceryl tricaprylate, glyceryl tri-2-ethylhexanoate, dicaprylic acid Fatty acid esters of polyhydric alcohols such as propylene glycol, di (capryl / capric acid) propylene glycol, propylene glycol diisostearate, neopentyl glycol di-2-ethylhexanoate, polyglyceryl-2 triisostearate, oleic acid, erucic acid, Higher fatty acids such as linoleic acid and isostearic acid, higher alcohols such as oleyl alcohol and isostearyl alcohol, dimethylpolysiloxane, chain polysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, etc. Modified polysiloxanes such as cyclic polysiloxane, amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, and fluorine-modified polysiloxane Silicone oil etc., perfluoropolyether, fluorinated oils such as perfluorocarbon are exemplified.
One kind of liquid oil other than vegetable oil may be used, or two or more kinds may be arbitrarily selected and blended.

  In an oily solid cosmetic containing an oil agent, the oil agent is preferably included in an amount of less than 30% by mass, and less than 20% by mass when the total mass of the oily solid cosmetic is 100%. More preferably. These oils can maintain the transparency of the base material in such a small amount.

  In addition to pigments and oils, moisturizers, whitening ingredients, anti-inflammatory ingredients, bactericides, and the like that are commonly used in cosmetics can also be included as optional ingredients according to the use of the oily solid cosmetic. When these optional components are used, the content of the optional components can be generally less than about 1% by mass when the mass of the entire oily solid cosmetic is 100%. However, the content of these optional components is not limited to this value, and can be appropriately determined by those skilled in the art according to the characteristics of each optional component.

  The oily solid cosmetic according to the present embodiment contains a wax and a phenyl group-containing polyorganosiloxane, and optionally contains (C) a pigment, and / or (D) an oil agent, and / or other optional components. It is solid at room temperature and retains a specific shape without being put in a container or the like. If it is the oil-based solid cosmetic which mixed the said component by the said compounding ratio, it is solid at normal temperature and can hold | maintain a specific shape independently. Specific examples of the shape include, but are not limited to, a stick shape, a flat plate shape, a spherical shape, a granular shape, and a soap shape. In addition, description about this shape does not exclude the oil-based solid cosmetics in a state of being accommodated in the container. Even if it can hold a specific shape alone, it may be contained in a container.

  Specific examples of the oily solid cosmetic according to this embodiment include sunscreen sticks, lipsticks, stick cheeks, eye shadow sticks, lame eye shadows, beauty (moisturizing) sticks, whitening sticks, and lip balms. However, it is not limited to these.

  Next, the manufacturing method of the oily solid cosmetic according to the present embodiment will be described. The oily solid cosmetic according to this embodiment comprises (A) a wax, (B) a phenyl group-containing polyorganosiloxane, optionally (C) a pigment and / or (D) an oil agent, and / or any other option. Ingredients can be produced by a step of mixing in the above-mentioned predetermined amount according to a conventional method.

  According to the oily solid cosmetic according to the present embodiment, the transparency can be improved even in a formulation in which the wax is solidified.

  According to another embodiment of the present invention, there is provided an oily solid cosmetic composition comprising: (A) 3 to 20% by mass of a solid wax at room temperature; and (B) 20 to 96% by mass of a phenyl group-containing poly Organosiloxane and (E) an ultraviolet absorber.

  The selection of (A) wax and (B) phenyl group-containing polyorganosiloxane is as described in the previous embodiment. However, the content of (B) phenyl group-containing polyorganosiloxane can be reduced in relation to (E) containing an ultraviolet absorber. For example, when the content of the ultraviolet absorber is 1 to 45% by mass when the total mass of the oily solid cosmetic is 100%, (B) the phenyl group-containing polyorganosiloxane is 20 to 96% by mass. It is preferable to set it as 20-70 mass%, and it is more preferable to set it as 45-70 mass%.

(E) Ultraviolet absorber The ultraviolet absorber can use arbitrary ultraviolet absorbers normally used for cosmetics. Even if an arbitrary ultraviolet absorber is contained, the formulation containing the specific amount of (A) wax and (B) phenyl group-containing polyorganosiloxane can improve transparency without causing cloudiness. .

  The ultraviolet absorber is preferably one or more components selected from ethylhexyl methoxycinnamate, bisethylhexyl hydroxydimethoxybenzyl malonate, diethylhexyl syringindene malonate, butyloctyl salicylate, and ethylhexyl salicylate. These ultraviolet absorbers may contain up to 45% by mass when the total mass of the oily solid cosmetic is 100%. Usually, the content of the ultraviolet absorber is preferably 1 to 45% by mass, more preferably 3 to 30% by mass, when the total mass of the oily solid cosmetic is 100%. The present inventors have found that when these specific ultraviolet absorbers are mixed with a wax that is originally cloudy, the mixture can be made transparent, and this embodiment has been conceived. Accordingly, in the oily solid cosmetic, the content of the phenyl group-containing polyorganosiloxane can be reduced by containing these specific ultraviolet absorbers. Therefore, even if these specific ultraviolet absorbers are contained at a high content as described above, they can improve transparency without becoming cloudy. In particular, when the phenyl group-containing polyorganosiloxane is diphenylsiloxyphenyl trimethicone, the transparency is further improved by combining with these specific ultraviolet absorbers.

  Most preferably, the UV absorber is ethylhexyl methoxycinnamate. Even when ethylhexyl methoxycinnamate is contained in a high content, it does not become cloudy, and even when mixed with many types of waxes, the transparency of the oily solid cosmetic can be further improved.

  Also in the present embodiment relating to an oily solid cosmetic material further containing an ultraviolet absorber, additional components such as (C) pigment and (D) other oil agent may be included as well. In addition, oily solid cosmetics further containing an ultraviolet absorber are solid at room temperature, and can maintain a specific shape independently, and can take shapes such as sticks, bars, and soaps. Specific products may be sunscreen sticks, lipsticks, whitening sticks, lip balms, etc., particularly used for the purpose of absorbing ultraviolet rays. Furthermore, the production method can also be carried out by mixing in a conventional manner.

  According to the oily solid cosmetic containing the ultraviolet absorbent according to the present embodiment, there is an advantage that the transparency of the oily solid cosmetic can be improved even if an ultraviolet absorbent that causes white turbidity is generally contained.

  According to the following Table 1, Table 2, and Table 3, an ingredient was mixed by a usual method and oily solid cosmetics of an example and a comparative example were prepared. The source of each component used in the examples and comparative examples is as follows.

  Polyethylene wax [molecular weight 675] (manufactured by Nippon Natural Products), Fischer-Tropsch wax (manufactured by Sazol), microcrystalline wax (manufactured by WITCO), ceresin (manufactured by Nikko Rica), paraffin (manufactured by Nippon Seiwa), polyethylene wax [molecular weight 400 ] (NEW PHASE Technologies), diphenylsiloxyphenyl trimethicone (manufactured by Shin-Etsu Chemical), diphenyl dimethicone (manufactured by Shin-Etsu Chemical), ethyl hexyl methoxycinnamate (manufactured by Nisshin Oillio Group), polyglyceryl-2 triisostearate (Nisshin) Eulio Group), diisostearyl malate (Nisshin Oillio Group), neopentyl glycol dicaprate (Nisshin Oillio Group), isotridecyl isononanoate (Nisshin Oillio Group), tri ( Caprylic acid / capric acid) glyceryl (Nisshin Oillio Group), hydrogenated polyisobutene (Nissho), mineral oil (Kaneda).

  About each cosmetic of an Example and a comparative example, the touch, hardness, transparency, and stability were evaluated.

[Feel]
The touch was evaluated by the following sensory test evaluation.
For each test product, makeup was applied to a panel of 10 women, such as the smoothness of application when applied to the lips, the feeling of spreading on the lips of the test product, and the lack of dryness of the lips after application. The finish feeling was evaluated according to the following criteria.

(Evaluation criteria)
The smoothness of the coating was 0 for very bad, 1 for relatively poor, 2 for neither, 3 for relatively smooth, and 4 for very smooth. Also, regarding the goodness of spread, 0 is very poor, 1 is relatively poor, 2 is neither, 3 is relatively good, and 4 is very good. It was.

(Judgment criteria)
The evaluation results were divided into three ranks based on the following criteria.
○: The average value of 10 people's evaluation is 3 or more and 4 or less Δ: The average value of 10 people's evaluation is 1 or more and less than 3 ×: The average value of 10 people's evaluation is 0 or more and less than 1

[hardness]
(Measuring method)
Measurement using a rheometer (COMPAC-100II manufactured by Sun Science Co., Ltd.), approach load value 2 mmφ adapter 3 cm / min. The stress peak value (unit: g) was measured when 8 mm was entered into the sample at a speed of.

(Judgment criteria)
The measured values were divided into 3 ranks based on the following criteria.
○: 50 or more and less than 200 Δ: 30 or more and less than 50, 200 or more and less than 300 ×: less than 30 or 300 or more In addition, less than 30 was easy to break, and 300 or more was rated as “x” because the spread was poor. A range of 30 or more and less than 300 is preferred in terms of feel (good in smooth use feeling) and resistance to breakage.

[Stability]
(Measuring method)
A test sample was held at 40 ° C. (85% humidity), a constant temperature bath held at 50 ° C., held at −5 ° C. for 8 hours, and then held at 20 ° C. (85% humidity) for 4 hours. Next, each of the three thermostats of the thermostat (the thermostat of the cycle) in which the internal atmosphere changes in a cycle of holding at 40 ° C. (85% humidity) for 8 hours and further holding at 20 ° C. (85% humidity) for 4 hours. The test samples stored for 1 month were evaluated for the presence or absence of changes in state according to the following criteria.

(Evaluation criteria)
○: No change was observed in the test samples stored in any of the thermostats.
(Triangle | delta): The change was seen by any one of 40 degreeC, 50 degreeC, and the thermostat of a cycle.
X: Changes were observed in any two or more of 40 ° C., 50 ° C., cycle thermostat.

[Transparency evaluation test]
(Test method)
The sample was poured into a transparent plastic cell at a depth of 3 mm, and evaluated the following day by the readability of 12-point characters written on the paper placed under the composition.

(Judgment criteria)
○: Slightly blurry and readable △: Blurred and faintly readable ×: Unreadable

  In the solid oily cosmetics of the examples in Tables 1 and 2, the performance was higher than that of the comparative oily cosmetics in all aspects of touch, hardness, transparency, and stability. In that respect, it was superior to the respective oily cosmetics of Comparative Examples.

  Next, more specific product formulations were determined, and oily solid cosmetics were prepared, and Examples 12 to 19 were obtained. The feel, strength, transparency and stability were evaluated by the same method as described above. The prescription and evaluation results are shown in Tables 4 to 11 below.

Claims (3)

3 to 20% by weight of a hydrocarbon wax having a melting point of 70 ° C. or higher;
50 to 97 wt% of diphenylsiloxy phenyl trimethicone or Ri name and at least one of the phenylpropyl dimethylsiloxy silicate, molar number of addition of glycerol is 4 to 10, the number of isostearic acid residues 1-4 An oily solid cosmetic which does not contain polyglyceryl isostearate, which is an individual .   The oily solid cosmetic according to claim 1, further comprising an ultraviolet absorber.   The ultraviolet absorber comprises at least one selected from the group consisting of ethyl hexyl methoxycinnamate, bisethylhexyl hydroxydimethoxybenzyl malonate, diethylhexyl syringin malonate, butyl octyl salicylate, ethyl hexyl salicylate. The oily solid cosmetic described.