JPH02152917A - Compressed powder cosmetic - Google Patents

Abstract

PURPOSE:To obtain a compressed powdery cosmetic which is readily spreadable on skin and shows high adhesion and good humectant properties by using a powder, an oil which is liquid at room temperature and a specific surface active agent in a specific proportion. CONSTITUTION:70 to 99wt.% of a powder such as talc, kaolin or sericite is mixed with (A) an oil which is liquid at room temperature (such as dimehtylpolysiloxane, dimethylcyclopolysiloxane), and (B) a liquid surface active agent insoluble in component A such as methylpolysiloxane-polyoxyalkylene copolymer, sorbitan fatty acid ester). The weight ratio of A to B is 20:1 to 1:2, while the total of A and B is 1 to 30wt.%. The compressed powdery cosmetic is used as a powder foundation cosmetic.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to solid powder cosmetics, and more specifically, to solid powder cosmetics that have good spreadability on the skin and excellent adhesion and moisturizing properties. Regarding powder cosmetics.

[Conventional technology]

Solid powder cosmetics contain various cosmetic powders and oily components as main ingredients. Various studies have been conducted on the shape and characteristics of the powder component in order to obtain an excellent feel when used as a cosmetic product. For example, spherical powders such as nylon powder have been used to improve spreadability, and plate-shaped powders such as mica and metal soaps such as magnesium stearate have been used to improve adhesion to the skin. There is. More recently, spherical cellulose powder (
Patent applications containing powders such as JP-A-61-100514) and boron nitride powder (JP-A-61-100508) have been disclosed, and new powders are being developed to meet consumer needs.

[Problem to be solved by the invention]

However, the oil-based ingredients in solid powder cosmetics have not been studied at present. For example, if a highly viscous oil-based substance is used, the adhesion to the skin and moisturizing properties can be improved. However, on the other hand, it has the disadvantage that it has extremely poor spreadability and stickiness, and when a low-viscosity material is used, it has good spreadability but poor adhesion and moisture retention, and a solution has been desired.

[Means to solve the problem]

In view of these circumstances, the present inventors conducted intensive research and found that by blending powder components with fluid oils and surfactants that do not dissolve and mix with each other at room temperature, the spreadability on the skin can be improved. They discovered that a solid powder cosmetic with good adhesion and excellent moisturizing properties can be obtained, and completed the present invention.

That is, the present invention uses the following components (A), (B), and (C) (A) Powder 70-99% by weight (B) Oil that is liquid at room temperature (C) Insoluble in component (B) at room temperature Contains a liquid surfactant, and the weight ratio of component (B) to (C) tU is 20:
1 to 1:2, total of component (B) and component (C) is 1 to 30
% by weight.

As the powder (A> component) of the present invention, powders generally used as cosmetics can be used, such as extender pigments such as talc, kaolin, sericite, and silicic anhydride;
Inorganic pigments such as titanium oxide, zinc oxide, iron oxide, and ultramarine; Burr pigments such as titanium mica and mica; Organic pigments such as Blue No. 404, Red No. 202, and Yellow No. 401; Metals such as magnesium stearate and zinc balmitate. I can mention soap.

These powders may be used alone or in combination of two or more, and the amount of compounding ingredients varies depending on the type of cosmetic, but is 70 to 99% by weight of the total amount of the solid powder cosmetic of the present invention, Especially 8
0 to 95% by weight is preferred.

As the component (B), a liquid oil that is fluid at room temperature is used, and specific examples thereof include dimethylpolysiloxane, dimethylcyclopolysiloxane, methylphenylpolysiloxane, squalane, light liquid paraffin, α -Olefin oligomers, liquid polyisobutylene, hexyl laurate, octyldodecyl myristate, decyl oleate, hexyldecyl isostearate, diisostearyl malate, jojoba oil, liquid lanolin, liquid diglyceride, olive oil, avocado oil, isostearyl colcor etc.

Component CB) is a component that mainly improves spreadability, and therefore preferably has a viscosity of 5 Qcpa or less at 25°C, particularly low-viscosity silicones such as dimethylpolysiloxane and dimethylcyclopolysiloxane in this viscosity range. Oil is preferred.

Examples of the surfactant as component (C) include dimethylpolysiloxane polyoxyalkylene copolymer, sorbitan fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyquine ethylene glycerin fatty acid ester, and polyoxyethylene glycerin fatty acid ester. /Ethylene hydrogenated castor oil etc.

Since component (C) is mainly blended to improve adhesion and moisture retention, the viscosity is 100 cps.
The above are preferred, and among these, sorbitan fatty acid esters and polyglycerol fatty acid esters having a viscosity within this range are particularly preferred.

In addition, the weight ratio of component (B) and component (C) is 20:1 to 1.
:2, and if component (C) is relatively reduced outside of this range, adhesion and moisture retention will be insufficient;
If the amount of component (B) is increased, the amount of component (B) will be relatively reduced, which is not preferable as the spreadability will be insufficient.

Components (B) and (C) must be selected so that they do not dissolve or mix with each other at room temperature. If these mutually dissolve, any of the effects of the present invention, such as spreadability, adhesion, and moisture retention, will be lost, which is not preferable. For example (B
) When dimethylpolysiloxane (6 cps) is used as a component, preferred component (C) that does not dissolve in this (B:C=3:L, room temperature) is sorbitan sesquioleate, sorbitan trioleate, mono Diglycerin isostearate, polyoxyethylene hydrogenated castor oil (20E, O,), polyoxyethylene nonylphenyl ether (9E, O,), polyoxyethylene sorbitan monolaurate (20E, O,), glycerol monooleate, etc. can be mentioned.

(B) m component and (C) component combination (■) is 1% to 30% by weight (hereinafter simply expressed as %) of the total amount of the solid powder cosmetic of the present invention, and if it is less than 1%, the present invention The effect of 3
If it exceeds 0%, it becomes clay-like and has no commercial value, or no increase in effectiveness is observed.

In addition to the above-mentioned essential ingredients, the solid powder cosmetic of the present invention includes oils, surfactants, humectants, ultraviolet absorbers, which are commonly used as cosmetic ingredients, to the extent that the effects of the present invention are not impaired.
Ingredients commonly used in cosmetics, such as chelating agents, pHtA regulators, preservatives, and fragrances, can be appropriately blended.

Examples of the solid powder cosmetics of the present invention include powder foundations, pressed powders, red bean paste, and powder eye shadows.

The solid powder cosmetic of the present invention can be prepared, for example, by mixing the powder components of (A) with a mixer or the like, pulverizing with an atomizer or the like, and then adding the oil phase component containing the components (B) and (C). It is manufactured by adding the mixture while stirring, mixing with a mixer, etc., pulverizing it again with an atomizer, etc., and filling and molding it into a container.

〔Effect of the invention〕

The solid powder cosmetic composition of the present invention is a cosmetic composition that has good spreadability on the skin and also has excellent adhesion and moisturizing properties.

〔Example〕

EXAMPLES The present invention will be explained in more detail by showing examples below, but the present invention is not limited to these examples.

Example 1 A powder foundation having the composition shown in Table 1 below was manufactured by the following manufacturing method, and its spreadability, adhesion, and moisture retention were evaluated by the following evaluation methods. The results are shown in Table 2.

The following margin (manufacturing method) Powder components 1) to 8) shown in Table 1 are mixed using a Henschel mixer and pulverized using an atomide. 9) ~
Component 13) is added to the above-mentioned pulverized product while stirring, mixed with a Henschel mixer, and then pulverized again with an atomizer.

Comparative product 1.2 and invention product 1.
2 powder foundation was obtained.

(Evaluation method) A practical test was conducted using 20 women aged 20 to 40 as test subjects, and spreadability, adhesion, moisture retention, and stickiness were evaluated using the following evaluation criteria.

○: 15 or more people answered “Good” △: 7 to 14 people x: 6 people or less Margin below Manufactured from

Powder components: Nylon powder, talc, silicostearin-treated titanium oxide, yellow iron oxide, black iron oxide, magnesium phosphate (wt%) Balance 30.0 0.1 0.1 0.01 1.0 As shown in Table 2 Inventive products 1 and 2, which are obtained by blending a pond agent and a surfactant with different properties in a fixed proportion and ratio without dissolving and mixing with each other, are compared to those that deviate from the blending range and proportion. Compared to products 1 and 2, extremely good results were obtained, including good spreadability and adhesion on the skin, high moisturizing properties, and less stickiness.

Actual Layer Side 2 Pressed powder having the following composition was prepared using the following manufacturing method: butyl paraben 0.2 Total: 100.0 (Manufacturing method) The above powder components were mixed with a Henschel mixer and pulverized with an atomizer. Next, the oil phase component is added to the powder component while stirring, mixed with a Henschel mixer, and then pulverized again with an atomizer. A pressed powder (product 3 of the present invention) was obtained by filling and molding this into medium blood.

Example 3 Almost Beni having the following composition was manufactured by the following manufacturing method.

Powder components: Nylon powder talc kaolinium oxide titanium mica pearl pigment Red No. 204 (wt%) Balance 30.0 10.0 5.0 5.0 1.0 (6cs) 10.0 Sorbitan trioleate 2. 0 Butylparaben 0.2 Total 100.0 (!!IIL manufacturing method) The above powder components are mixed with a Henschel mixer and pulverized with an atomizer. Next, the oil phase component is added to the powder component while stirring, mixed with a Henschel mixer, and then pulverized again with an atomizer. By filling and molding this into medium blood, a red beni (product of the present invention 4) was obtained.

Example 4 A powder eye shadow having the following composition was manufactured by the following manufacturing method.

(Weight%) Powder ingredients: Nylon powder No. 2 Starck 2Q, (1 Kaolin
15.0 mica titanium
5.0 Black iron oxide 1.0 group Blue
7゜Oil phase component Nidimethylpolysiloxane (6cs) 1.0 Triglyceryl diisostearate 2.0 Butylparaben 0.2 Fragrance
0.2 Procedural amendment (voluntary) Total 100.0 (Production method) The above powder components are mixed with a Henschel mixer and pulverized with an atomizer. Next, the oil phase component is added to the powder component while stirring and mixed in a Henschel mixer, and then pulverized again in an atomizer. A powder eye shadow (Product 5 of the present invention) was obtained by filling and molding this into the inner surface.

Inventive products 3 to 5 prepared in Examples 2 to 4 were all cosmetics with good spreadability and adhesion to the skin, and excellent moisturizing properties.

January 19, 1989 [1 1, Indication of the case: Patent Application No. 307454 of 1988 2, Name of the invention: Solid powder cosmetics 3, Person making the amendment Relationship with the case: Applicant name (091) Kao Corporation 4, agent address: 1-3-6, Nihonbashi Ningyocho, Chuo-ku, Tokyo (
103), "Detailed Description of the Invention" column of the specification to be amended, contents of the amendment (1) In the specification, in the second line from the bottom of page 4, the term "isostearyl colcol" has been replaced with "isostearyl Alcohol,” he corrected.

(2) Page 6, line 9 r　6　cps　J Corrected as r6csJ.

Claims (1)

[Claims] 1. The following components (A), (B) and (C) (A) Powder 70-99% by weight (B) Oil agent that is liquid at room temperature (C) Component (B) at room temperature Contains a liquid surfactant that does not dissolve, and the weight ratio of component (B) to component (C) is 20:1.
~1:2, the total of component (B) and component (C) is 1 to 30
% by weight of a solid powder cosmetic.