JP2000281554A - Water-in-oil type emulsion cosmetic containing powder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a powder-containing water-in-oil type emulsion cosmetic which has a smooth touch, can give a natural finish, and has excellent storage stability. SOLUTION: This powder-containing water-in-oil type emulsion cosmetic comprises 10 to 40 wt.% of one or more kinds of compounds selected from cyclic silicone tetramer, pentamer and hexamer, 0.5 to 5 wt.% of sorbitan monoisostearate and/or diglyceryl monostearate, 0.5 to 10 wt.% of the powder of a methylsiloxane net-like polyurer and/or a cross-linked silicone, 0.5 to 20 wt.% of titanium dioxide, and 20 to 70 wt.% of water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder-containing water-in-oil type emulsified cosmetic which has a smooth feel, enables a natural finish, and has excellent storage stability. More particularly, it relates to a makeup cosmetic and a sunscreen. The present invention relates to a powder-containing water-in-oil emulsion cosmetic suitable as a cosmetic.

[0002]

2. Description of the Related Art Conventionally, a cyclic silicone has a refreshing feeling and a feeling of use with little stickiness.
It is widely used as an oil agent for water-in-oil emulsion cosmetics.
However, water-in-oil type emulsified cosmetics containing it are
There was a drawback that the use characteristics were heavy. When a pigment is further contained, it is difficult to obtain a natural finish, and oil bleeding or the like occurs, making it difficult to obtain satisfactory storage stability.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned drawbacks, to provide a smooth feel and a natural finish, and to provide a powder-containing water-in-oil emulsion having excellent storage stability. To provide cosmetics.

[0004]

Means for Solving the Problems The present inventors have conducted intensive studies, and as a result, have confirmed that the following powder-containing water-in-oil type emulsified cosmetics achieves the above objects, and have completed the present invention. Reached. That is, the present invention provides 10 to 40% by weight of one or more of cyclic tetramer to hexamer, 0.5 to 5% by weight of sorbitan monoisostearate and / or diglyceryl monoisostearate, 0.5 to 10 of the reticulated polymer and / or the crosslinked silicone powder
% By weight, 0.5 to 20% by weight of titanium oxide, and 2
It is a powder-containing water-in-oil type emulsified cosmetic characterized by containing 0 to 70% by weight.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below.
The cyclic silicone tetramer to hexamer used in the present invention is represented by the following general formula, and one or a combination of two or more thereof is used.

Embedded image (In the formula, n is an integer of 4 to 6.)

The content of the cyclic silicone tetramer to hexamer used in the present invention is preferably from 10 to 40% by weight, based on the total amount of the powder-containing water-in-oil emulsified cosmetic containing it. Is 15 to 30% by weight. That is,
If the content is less than 10% by weight, an excellent feeling of use cannot be obtained, while if it exceeds 40% by weight, the oily feeling unique to silicone oils is enhanced, and the feeling of use is deteriorated.

[0007] The content of sorbitan monoisostearate and / or diglyceryl monoisostearate used in the present invention is 0.5 to 5% by weight based on the total amount of the powder-containing water-in-oil emulsion cosmetic containing the same. %, Preferably 1 to 3% by weight. That is, this is 0.5
When the amount is less than 5% by weight, the dispersibility of the powder is deteriorated.

As the methylsiloxane network polymer and / or crosslinked silicone powder used in the present invention, the methylsiloxane network polymer is Tospearl manufactured by Toshiba Silicone Co., Ltd. from the viewpoint of usability (for example, feel) as a cosmetic. The use of a series is preferred, and the cross-linked silicone powder is Trefil E manufactured by Dow Corning Toray Silicone Co., Ltd.
The use of a series is preferred. When using Trefil E series, it may be used as it is, but it is more preferable to use a bead mill, crusher or the like to dissolve the aggregation and use it.

The amount of the methylsiloxane network polymer and / or crosslinked silicon powder used in the present invention is as follows:
It is from 0.5 to 10% by weight, preferably from 1 to 10% by weight, based on the total amount of the powder-containing water-in-oil emulsified cosmetic containing it.
5% by weight. That is, if it is less than 0.5% by weight, a smooth and natural finish cannot be realized, and the storage stability is also reduced. If the content exceeds 10% by weight, an excellent feeling in use cannot be obtained.

The titanium oxide used in the present invention is usually
It is used for cosmetics, paints and the like, and if necessary, used is one that has been treated with alumina, silica, zinc white or hydrophobically treated with silicone or the like.

The content of the titanium oxide used in the present invention is 0.5 to 20% by weight, preferably 3 to 20% by weight based on the total amount of the powder-containing water-in-oil emulsion cosmetic containing the titanium oxide. 10% by weight. That is, if this is less than 0.5% by weight, the concealing effect is low,
The purpose as a sunscreen cosmetic cannot be achieved, while if it exceeds 20% by weight, the feel becomes heavy.

The water used in the present invention is purified water or the like, and its content is 20 to 70% by weight based on the total amount of the powder-containing water-in-oil emulsion cosmetic containing the water.

[0013] In addition to the above essential components, the powder-containing water-in-oil emulsified cosmetic of the present invention contains pigments such as talc, mica and kaolin, oily components such as liquid paraffin, squalane and wax, and other moisturizing agents. An emulsifier, a fragrance, an ultraviolet absorber, a preservative, and the like can be blended within a range that does not impair the effects of the present invention.

The powder-containing water-in-oil emulsion cosmetics of the present invention include makeup bases such as makeup bases, emulsified foundations, eye shadows, etc., and sunscreen cosmetics such as sunscreen creams. The dosage form may be, for example, emulsions, creams and the like.

[0015]

Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. The numerical values in the table represent the content (% by weight). Prior to the examples, an evaluation method and a sample preparation method adopted in each example will be described.

<Evaluation method> (1) Use characteristic test The sample of the example and the comparative example was applied to the face of 20 female panelists, and it was determined that "the touch was smooth" and "the finish was natural". The usage characteristics were evaluated according to the number of respondents. The evaluation criteria are as follows.

The number of people is 15 or more; ○ ７ 7 to 14; 〃 △ 6 or less; ×

(2) Storage Stability Test The sample prepared by the prescribed method was left in a thermostat at 0 ° C., 25 ° C., and 45 ° C., and the storage stability after 3 weeks was evaluated according to the following criteria.

No aggregation; ○ slight aggregation; Δ aggregation; ×

<Method for Preparing Powder-Containing Oil-in-Water Type Emulsion Cosmetic> The oil phase component is heated to 80 ° C., the powder is dispersed therein, and the water phase component previously heated to 80 ° C. is added. After emulsification, the mixture is stirred and cooled to room temperature to obtain the desired powder-containing water-in-oil emulsion cosmetic.

Examples 1 to 5 and Comparative Examples 1 to 3 Emulsion foundation Emulsion foundations having the compositions shown in Table 1 were produced by the above-mentioned preparation methods, and the above-mentioned tests were carried out. Table 1 also shows the results. Tospearl 145A manufactured by Toshiba Silicone Co., Ltd. was used as the methylsiloxane network polymer, and Trefil E-506C manufactured by Dow Corning Toray Silicone Co., Ltd. was used as the crosslinked silicone powder.

[0022]

[Table 1]

As shown in Table 1, the emulsified foundations of Examples 1 to 5 are clearly superior to the emulsified foundations of Comparative Examples 1 to 3 in all aspects of storage stability and use characteristics.

Example 6 Makeup Base A makeup base having the composition shown below was prepared by the above-mentioned preparation method.

Ingredients Content (% by weight) Oil phase component Diglyceryl monoisostearate 3.0 Cyclic silicone pentamer 20.0 Propylene glycol dicaprylate 3.0 Cholesteryl hydroxystearate 3.0 Squalane 3.0 White petrolatum 2.0 Powder Crosslinked silicone powder * 2.0 Titanium oxide 0.5 Mica 0.5 Water phase component Maltitol solution 3.0 Sorbitol solution 3.0 Methyl parahydroxybenzoate 0.2 Purified water to 100 (* Toray Dow Corning Silicone Tolefill E-505C)

Example 7 Eye shadow An eye shadow having the following composition was prepared by the above-mentioned preparation method.

Ingredients Content (% by weight) Oil phase component Diglyceryl monoisostearate 1.5 Sorbitan monoisostearate 1.5 Cyclic silicone tetramer 5.0 Cyclic silicone pentamer 10.0 Adsorbed and purified lanolin 3. 0 Hardened oil 3.0 Powder Crosslinked silicone powder * 3.0 Titanium oxide 0.5 Red No. 226 0.1 Bengala-coated mica titanium 2.0 Black iron oxide-coated mica titanium 1.5 Mica titanium talc 3.0 5 Aqueous phase component 1,3-butylene glycol 2.0 Purified glycerin 1.0 Sorbic acid 0.1 Ethyl parahydroxybenzoate 0.1 Purified water to 100 (* Trefle E-506C manufactured by Dow Corning Toray Silicone Co., Ltd.)

Example 8 Sunscreen cream A sunscreen cream having the composition shown below was prepared by the above-mentioned preparation method.

Ingredients Content (% by weight) Oil phase component Sorbitan monoisostearate 3.0 Cyclic silicone tetramer 2.0 Cyclic silicone pentamer 15.0 Diisostearyl malate 3.0 Shea butter 3.0 2-Ethylhexyl paramethoxycinnamate 3.0 Methylphenylpolysiloxane 3.0 Powdered egg yolk oil 0.5 Powdered methylsiloxane network polymer * 1.0 Titanium oxide 5.0 Aqueous phase component Dipropylene glycol 2.0 Paraoxybenzoate Methyl acid 0.2 purified water to 100 (* Tospearl 145A manufactured by Toshiba Silicone Co., Ltd.)

Example 9 Emulsified foundation An emulsified foundation having the following composition was prepared by the above-mentioned preparation method.

Ingredients Content (% by weight) Oil phase component Sorbitan monoisostearate 2.5 Cyclic silicone hexamer 25.0 Methylpolysiloxane (6cs) 3.0 Methylphenylpolysiloxane 3.0 Paraffin 3.0 Celesin 2.0 Propyl parahydroxybenzoate 0.3 Powder Crosslinked silicone powder * 0.5 Methylsiloxane network polymer ** 9.5 Titanium oxide 15.0 Bengala 0.4 Yellow iron oxide 1.5 Black iron oxide 0.2 Talc 5.0 Mica 3.0 Aqueous phase component 1,3-butylene glycol 3.0 Purified water to 100 (* Toray Dow Corning Silicone Co., Ltd. Trefil E-505C) (** Toshiba Silicone Co., Ltd. Tospearl 145A)

As described above, all of Examples 6 to 9 were powder-containing water-in-oil emulsion cosmetics having a smooth feel, a natural finish, and excellent storage stability.

[0033]

As described above, it is apparent that the present invention provides a powder-containing water-in-oil cosmetic which has a smooth feel, enables a natural finish, and has excellent storage stability.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI theme coat ゛ (reference) A61K 7/02 A61K 7/02 P 7/42 7/42 F term (reference) 4C083 AA082 AB232 AB241 AB242 AB432 AC012 AC022 AC122 AC132 AC272 AC342 AC392 AC421 AC422 AC441 AC442 AC482 AC862 AD042 AD151 AD152 AD171 AD172 AD492 AD512 CC05 CC12 CC14 CC19 DD31 DD32 EE01 EE06 EE17

Claims (1)

[Claims] 1. One or two or more cyclic silicone tetramer to hexamer of 10 to 40% by weight, sorbitan monoisostearate and / or diglyceryl monoisostearate of 0.5 to 5% by weight, methylsiloxane network Powder-containing water-in-oil type containing 0.5 to 10% by weight of a polymer and / or crosslinked silicone powder, 0.5 to 20% by weight of titanium oxide, and 20 to 70% by weight of water Emulsified cosmetics.