JP2571098B2 - Oily cosmetics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an oil-based cosmetic, and more particularly, has an excellent feel such as smooth spread at the time of application, richness, and good fit. In addition, the present invention relates to an excellent oily cosmetic, particularly a solid cosmetic, which has good releasability from a container when formed into a stick shape and has a glossy appearance.

[Conventional technology and its problems]

Oily cosmetics are widely used because they have excellent properties such as adhesion to the skin, covering power, and water resistance of the cosmetic film. Conventional oil-based cosmetics generally use an oil-based base consisting of semi-solid oil or liquid oil and solid oil, or an oil-based base further blended with an oil-based gelling agent, and used as a cosmetic powder. Mixed, dispersed, solidified,
It is manufactured by molding.

However, since conventional oil-based cosmetics have a high oil content, the sticky feeling peculiar to oil-based products feels oily. It had drawbacks such as poor stretch and spread.

In order to improve these disadvantages, as one method, an oil agent having a low oiliness, for example, a low-viscosity silicone oil has been used. As a solid cosmetic compounded with a low-viscosity silicone oil, there is known a state cosmetic (Japanese Patent Application Laid-Open No. 60-248604) in which 15 to 50% by weight of a silicone oil having a viscosity of 100 cs or less is incorporated.

However, even if an oil agent having a low oiliness is blended, the oiliness of the oily base is not sufficiently eliminated. In particular, low-viscosity silicone oils have little stickiness by themselves and have a slimy feel. It was difficult to maintain the cosmetics stably due to poor compatibility with the preparation. Further, in this case, it was not sufficiently satisfactory in terms of smooth spreading and smoothness at the time of coating.

In general, oil-based cosmetics have a large oil content, so that the ease of application is poor.In order to improve this point, increase the compounding ratio of powder in the composition or use an adhesive oil or solid oil. Preparations have been made by blending a large amount. However, these lack smooth smoothness at the time of application,
No satisfactory product has been obtained.

[Means for solving the problem]

In view of the above circumstances, the present inventors have conducted intensive studies to obtain an oil-based cosmetic having an excellent feeling in use and less likely to lose makeup, and as a result, a silicone composition of a specific combination, an oil agent compatible with the silicone composition And found that oily cosmetics obtained by combining cosmetic powders satisfy the above requirements,
The present invention has been completed.

That is, the present invention includes a silicone composition comprising a high-viscosity silicone and a low-viscosity silicone oil, a cosmetic base containing a solid oil agent compatible with the silicone composition, and a cosmetic powder. It is intended to provide an oily cosmetic characterized by the above.

The cosmetic base of the present invention essentially contains a silicone composition comprising a high-viscosity silicone and a low-viscosity silicone oil, and a solid oil which is compatible with the silicone composition.

The high viscosity silicone used in the present invention has a viscosity of 10
A dimethylpolysiloxane having a degree of polymerization exceeding 100,000 cs and a degree of polymerization of 3,000 or more, such as Shin-Etsu Silicone KE-76BS (manufactured by Shin-Etsu Chemical Co., Ltd.) or TSE200
A (manufactured by Toshiba Silicone Co., Ltd.) and the like.

The low-viscosity silicone oil is not particularly limited, but may be suitably used as long as it has a viscosity of about 50 cs or less. However, this low-viscosity silicone oil is used for dissolving the above-mentioned high-viscosity silicone and is used in a relatively small amount (for example, per final product concentration,
(Less than 5.0% by weight), there is no problem even if it is less than about 100cs. This is because, as the viscosity becomes higher, a large amount of it becomes oily to the touch, resulting in an unfavorable feeling in use. Examples of the low-viscosity silicone oil include low-polymerization degree chain dimethylpolysiloxane, methylphenylpolysiloxane, cyclic octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and the like. Two or more types are appropriately selected and used.

The preparation of the silicone composition is carried out by mixing and dissolving the high-viscosity silicone with the low-viscosity silicone oil to make it uniform. In this case, the mixing ratio (weight) of the high-viscosity silicone and the low-viscosity silicone oil may be arbitrarily set to 1/4 or less. When the ratio increases and the amount of the high-viscosity silicone increases, it becomes difficult to easily mix it as an appropriate viscous substance in preparing a final product, and the mixing solubility with another oil agent may deteriorate.

In the present invention, it is prepared by blending a solid oil in addition to the above silicone composition, but it is necessary to use a solid oil which is compatible with the silicone composition. In other words, unless you select and use compatible solid oils,
Poor miscibility, precipitation of high-viscosity silicone and separation of solid oil during heating and dissolution, resulting in a non-uniform state when the final product is obtained, which is not preferable in terms of appearance and usability. Examples of such solid oils compatible with, that is, miscible with, the silicone composition include paraffin wax, ceresin wax, polyethylene wax, cetyl palmitate, higher alcohol (cetanol), stearic acid, and the like. Can be

Next, the cosmetic powder added and blended in the cosmetic base is not particularly limited, but extender pigments, inorganic white pigments, inorganic colored pigments, organic pigments, organic powders, pearling agents, and the like are included. It can be used, specifically, talc, kaolin, mica, magnesium carbonate, calcium carbonate, magnesium silicate, aluminum magnesium silicate, silica, titanium oxide, zinc oxide, red iron oxide, yellow iron oxide, black iron oxide, gunjiyou , Konjiyo, tar dye, nylon powder, polyethylene powder, methyl methacrylate powder, styrene powder, polytetrafluoroethylene powder, silk powder, crystalline cellulose, starch,
Mica titanium, iron oxide mica titanium, bismuth oxychloride and the like can be mentioned. One or two or more of these cosmetic powders are selected and used according to the purpose of cosmetics and the like, and may be blended by subjecting to a known surface coating treatment or the like.

The oil-based cosmetic of the present invention is obtained by first heating and dissolving the silicone composition obtained as described above with another oil such as a solid oil, and then mixing with a premixed and pulverized powder and using a roll mill or the like. It is prepared by uniformly dispersing, heating and melting again, filling into a container, cooling and molding.

The amounts of the respective components in the solid cosmetic composition of the present invention thus obtained are preferably as follows per final product concentration.

High viscosity silicone 0.1 to 20% by weight Low viscosity silicone oil 20 to 93% by weight Solid oil agent 2 to 40% by weight Powder 5 to 60% by weight If the concentration is within the above range, the effect of the present invention can be sufficiently achieved. If the amount of the high-viscosity silicone is too small, smooth spreading at the time of application and good fit will not be felt, and if the amount of the high-viscosity silicone is too large, the application will become too heavy at the time of application,
The solubility in oils becomes poor, and the viscosity becomes so high that it becomes difficult to mix.

On the other hand, if the amount of the low-viscosity silicone oil is too small, the proportion of the high-viscosity silicone increases, making it difficult to mix.

Further, if the amount of the solid oil is too small, it flows out during use or the mold loses shape, and it is difficult to use. .

Furthermore, if the amount of the cosmetic powder is too small, the makeup effect cannot be expected, and if the amount of the cosmetic powder is too large, the powder may become powdery or spread poorly.

In the oily cosmetic of the present invention, in addition to the above essential components, fragrances, preservatives, ultraviolet absorbers, surfactants, antioxidants, high molecular compounds, oils, and beautiful skin as long as the effects of the present invention are not impaired. Components and the like can be added.

〔Example〕

 Next, the present invention will be described in more detail with reference to examples.

Example 1 An oily foundation was prepared according to the composition shown in Table 1. The resulting oily foundation was subjected to a sensory evaluation for its feel and use. The results are shown in Table 2.

(composition) (Preparation method) Step A: Dissolve high viscosity silicone in low viscosity silicone oil.

Step B: The mixture obtained in Step A and the oil agent are heated and dissolved.

Step C: The mixture obtained in step B is mixed with powder previously mixed and ground, and uniformly dispersed by a roll mill.

Step D: The mixture obtained in Step C is heated and melted, defoamed, filled in a container, cooled and molded.

As is clear from the results in Table 2, the products 1 to 3 of the present invention
At the time of application, it had a smooth spread and richness, had an excellent feel of good fit, and had a good makeup. On the other hand, when high viscosity silicone is not used (Comparative product 1,
3) had poor smoothness at the time of application, had no richness, and was unsatisfactory in terms of good fit and good makeup. The same result was obtained when a product having a viscosity substantially equal to that of the product 3 of the present invention was prepared using only the low viscosity silicone oil without using the high viscosity silicone (Comparative product 3). When high-viscosity polybutene was added (Comparative Product 2), the smoothness and richness were not improved, and the makeup was slightly inferior, although the ease of application during application was improved.

Example 2 Stask lipstick (composition) (Manufacturing method) Step A: (1) to (3) are mixed and dissolved.

Step B: (4) to (6) are added to the mixture obtained in Step A and dissolved by heating.

Step C: (7) and (8) are added to the mixture obtained in Step B, and the mixture is uniformly dispersed by a roll mill.

Step D: After defoaming, pour into a stick mold, cool and mold.

The product of the present invention and the comparative product 4 had very good compatibility when the oily component was dissolved by heating, and were transparent and homogeneously dissolved. However, the comparative product 5 (Example 3 of JP-A-60-248604) was
The compatibility between the silicone composition and the solid oil agent was poor, and it was in a partially insoluble state. Also, in the product after molding, as is clear from the results in Table 4, the product of the present invention spreads smoothly at the time of application, has a rich body, has a good fit, and has good mold release from the container. It was a very glossy status. On the other hand, Comparative Product 4 was inferior in smoothness at the time of application, had no richness, and was slightly inferior in setting. Further, Comparative Product 5 had poor releasability from the container, and crystals of the immiscible solid oil agent appeared on the surface of the stick, which had a problem in appearance. In addition, they were smooth and rich.

Example 3 Oil-based ointment type foundation (Composition) Methylphenylpolysiloxane 31.5 (%) Dimethylpolysiloxane (5cs) 14 Silicone KE-76BS 3.5 Selecinwax 7 Liquid paraffin 14 Titanium oxide 20 Bengala 0.7 Yellow iron oxide 2.4 Black Iron oxide 0.3 Talc 3.3 Mica titanium 3.3 (Production method) Prepared according to Example 1.

The obtained product of the present invention had a smooth spread at the time of application, was rich, had a good fit, and had a good makeup.

Example 4 Sticky Foundation (Composition) Methylphenylpolysiloxane 10.9 (%) Dimethylpolysiloxane (5cs) 22.4 Silicone TSE-200A ^* 5.6 Paraffin wax 16.8 Sorbitan sesquioleate 0.3 Titanium oxide 26 Bengala 1.2 Yellow iron oxide 4.3 Black iron oxide 0.5 Talc 6 Mica titanium 6 * Degree of polymerization 7,000-9,000 (Production method) Prepared according to Example 2.

The obtained product of the present invention had a smooth and rich body at the time of application, had a good fit, and had good makeup. In addition, the mold was well separated from the inner wall of the container.

Example 5 Sticky Ishido (Composition) Methylphenylpolysiloxane 40 (%) Decamethylcyclopentasiloxane 2 Silicone KE-76BS 0.5 Paraffin Wax 15 Candelilla wax 1 Squalane 1 Sorbitan sesquioleate 0.5 Titanium oxide mica 35 Blue 404 0.25 talc 4.75 (Production method) Prepared according to Example 2.

The obtained product of the present invention spreads smoothly when applied to the eyelids, has a rich body, has a good fit, and has good mold release properties from the inner wall of the stake container.

Example 6 Sticky hoho red (Composition) Methylphenyl polysiloxane 5 (%) Dimethyl polysiloxane (5cs) 48 Silicone KE-76BS 12 Polyethylene wax 15 Gay wax 2 Neopentyl glycol diisooctanoate 3 Red No. 226 0.2 Yellow 401 No. 0.1 talc 5.7 Mica titanium 4 Nylon powder 5 (Production method) Prepared according to Example 2.

The obtained product of the present invention had a smooth spread and richness at the time of application, and was excellent in ease of setting. In addition, the mold was easily separated from the inner wall of the stake container.

〔The invention's effect〕

As described in detail above, the present invention provides a silicone composition by combining a high-viscosity silicone with a low-viscosity silicone oil and selecting a solid oil which is compatible with the silicone composition. , And oil-based cosmetics with a very good feel such as a smooth, stretchy, rich, and comfortable fit that cannot be satisfied by simply blending low-viscosity silicone oil with it. It was done. Further, when molded into a stake, the mold has good releasability from the container and is excellent in appearance.

Claims (1)

(57) [Claims] 1. A silicone composition comprising a high-viscosity silicone and a low-viscosity silicone oil, a cosmetic base containing a solid oil compatible with the silicone composition, and a cosmetic powder. An oil-based cosmetic characterized by the following.