JP2829789B2 - Powder for cosmetics and cosmetics containing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a powder for cosmetics which is excellent in water and oil repellency, does not lose makeup, has good elongation on the skin, and has a good feel upon use. The present invention relates to a cosmetic containing a powder.

[Prior Art] Cosmetics containing cosmetic powder include foundation, white powder, blush, eye shadow,
Makeup cosmetics such as eyebrow, and body cosmetics such as body powder and baby powder are commercially available. Thus, in cosmetics containing these cosmetic powders, there are problems with cosmetic performance such as elongation on the skin, smoothness, adhesion and makeup collapse. Therefore, conventionally, in order to improve the cosmetic performance, coating the surface of the cosmetic powder, especially in order to prevent makeup collapse due to sweat etc., the surface of the powder with a water-repellent treating agent. Processing has been done. However, regarding the oil repellent treatment of the powder surface for the purpose of preventing sebum collapse,
No overall good method including other cosmetic performances has been proposed. That is, conventionally, the following powders for cosmetics having water / oil repellency have been reported, but they have the following disadvantages.

1) A method using a fluorine compound (phosphate ester, sulfoamide-containing carboxylic acid, acrylate ester copolymer, etc.) as a powder coating compound (US Pat. No. 3,632,744). In particular, a method is disclosed wherein the powder is treated with a diethanolamine salt of a fluoroalkyl phosphate ester having a content of di- (fluoroalkyl) phosphate ester and mono- (fluoroalkyl) phosphate ester of about 1: 1. . Powders for cosmetics treated by this method were not sufficiently satisfactory in terms of water and oil repellency and feeling in use.

2) A method using a fluoroalkyl group-containing polymer as a powder coating compound (JP-A-65-1548).
No. 1). According to this method, only a small part of the chemical bond between the powder and the coating compound was involved, and the cosmetic powder treated thereby did not have sufficient water and oil repellency.

3) A method using a monoester or diester of a fluoroalkyl phosphoric acid ester diethanolamine salt as a powder coating compound (Japanese Patent Application Laid-Open No. 62-25007).
No. 4). According to this method, since it is a diethanolamine salt, there is almost no portion covalently bonded to the powder, the water repellency is not sufficient, and the feel is inferior.

4) A method using a fluoroalkyl alcohol as a coating compound for the powder (JP-A-63-2251, JP-A-63-2251)
No. 3-2252). According to this method, the water repellency was particularly insufficient.

5) A method in which a fluoroalkyl-containing polyhydric alcohol or a fluoroalkyl-containing polyoxyethylene compound is used as a powder coating compound (JP-A-1-180810).
No. 1-180811). When using this method,
As in 4), the water repellency was particularly insufficient.

[Problems to be Solved by the Invention] Accordingly, there has been a demand for a powder for cosmetics having a cosmetic performance excellent in water repellency, oil repellency and feel such as elongation, adhesion and smoothness.

[Means for Solving the Problems] Under such circumstances, the present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, a powder of a perfluoroalkyl epoxy compound represented by the following general formula (1) was obtained. , A cosmetic powder having excellent water and oil repellency and good feel was obtained, and the present invention was completed. That is, the present invention provides the following general formula (1) [In the formula, n represents an integer of 4 to 20, and 1 represents an integer of 0 to 3.] A water- and oil-repellent cosmetic powder obtained by treating a powder with a perfluoroalkyl epoxy compound represented by the following formula: And a cosmetic comprising the same. In the present invention, examples of the perfluoroalkyl epoxy compound represented by the general formula (1) include: And the like. The powder treated with the perfluoroalkyl epoxy compound in the present invention is not particularly limited as long as it is generally used as a cosmetic. For example, ultraviolet absorbing pigments such as titanium oxide and zinc oxide; Inorganic pigments such as iron oxide, black iron oxide, ultramarine, zinc white, magnesium oxide, zirconium oxide, mica, sericite, talc, silica, kaolin, chromium hydroxide, and carbon black; organic pigments such as nylon, polyethylene, and silk powder Is mentioned. The size and shape of the powder are not particularly limited, but are preferably flat or spherical with a diameter of 0.01 to 80 μm. In the present invention, the method of treating the powder with the perfluoroalkyl epoxy compound is not particularly limited, but generally, a powder and a solution in which the perfluoroalkyl epoxy compound is dissolved are mixed,
A method of filtering or distilling off the solvent is preferred. As the solvent, any solvent may be used as long as it dissolves the perfluoroalkyl epoxy compound.
Fluorocarbons such as ethanol, isopropyl ether, isopropyl alcohol, ethyl acetate and R113 are used. The processing amount of the perfluoroalkyl epoxy compound varies depending on the type thereof, but is usually 0.2 to
50% by weight (hereinafter simply referred to as%), particularly preferably 1 to 20%. If the treatment amount is too small, the water / oil repellency is not sufficient. If the treatment amount is too large, the water / oil repellency decreases, and further elongation on the skin cannot be expected, which is uneconomical. The mixing temperature is preferably from 20 to 150C, particularly preferably from 40 to 120C. The amount of the solvent is preferably 0.3 to 30 times, more preferably 0.5 to 10 times the weight of the powder. The mixing time varies depending on the processing amount and the type of powder, but is usually 1 to 15 hours, particularly 2 to 15 hours.
10 hours is preferred. The thus-prepared powder for cosmetics can be blended with cosmetics for which it is required according to a conventional method. Examples of such cosmetics include makeup cosmetics such as foundation, white powder, blusher, eyeshadow and eyebrow, and body cosmetics such as body powder and baby powder.

[Embodiment] Next, the present invention will be described with reference to embodiments. In the examples, the measurements of water repellency, oil repellency and feel were performed by the following methods.

Water repellency: 0.2 g of powder is weighed, and 100 kgf /
The pellet was 1 cm in diameter in 5 minutes with a force of cm ² . One drop of ion-exchanged water was dropped on the surface of the pellet using a microsyringe, and 30 seconds after the drop, the contact angle was measured three times to determine the water repellency of the powder.

Oil repellency: After dropping one drop of squalane in the same manner as above, the contact angle was measured three times to measure the oil repellency of the powder.

Feeling evaluation: Five expert panelists evaluated the feeling of the powder based on the following five grades from 1 to 5 from the feeling of elongation, creaking, and roughness of the powder, and the average value was shown. The feel of the powder of sericite A (manufactured by Horie Kako Co., Ltd.) having an average particle diameter of 7 μm was set to a standard value of 3.0.

1: Bad feeling of elongation, etc. 2: Slightly poor feeling of elongation, etc. 3: Normal (equivalent to sericite A) 4: Good feeling of elongation, etc. 5: Good feeling of elongation, etc. 1 In a round bottom flask, 10 g of the perfluoroalkyl epoxy compound shown in the column of Example 1 in Table 1 was added, and 600 g of isopropyl ether was further added, followed by heating and mixing at 60 ° C. After heating and mixing, this was mixed with sericite A having an average particle size of 7 μm.
150 g (manufactured by Horie Kako) was added, and the mixture was further heated and mixed at 60 ° C. for 4 hours. Thereafter, isopropyl ether was distilled off under reduced pressure at 50 to 60 ° C. and dried to obtain 150 g of powder. The obtained powder was excellent in water repellency, oil repellency and feel as shown in Table-1.

Example 2 The procedure of Example 1 was repeated except that mica A having an average particle size of 10 μm (manufactured by Horie Kako Co., Ltd.) was used instead of sericite A having an average particle size of 7 μm used in Example 1. The resulting powder is
As shown in FIG. 1, it was excellent in water repellency, oil repellency and feel.

Example 3 In the same manner as in Example 1 except that the perfluoroalkyl epoxy compound shown in the column of Example 3 of Table 1 was used instead of the perfluoroalkyl epoxy compound shown in the column of Example 1 of Table 1. went. The obtained powder was excellent in water repellency, oil repellency and feel as shown in Table-1.

In the following examples, production of various cosmetics was attempted using pigments treated with the perfluoroalkyl epoxy compound shown in the column of Example 1 in Table 1 above.

Example 4 Oily foundation: (Composition) Obtained by treating each of the following pigments with the compounds shown in the column of Example 1 in Table 1 by the method described in Example 1, and mixing the treated pigments. Mixed pigment A base excluding powder and fragrance is blended in the above composition, and 90 ° C.
And dissolved. Thereafter, the powder was gradually added while stirring with a disper, and sufficiently stirred and mixed. Finally, add the fragrance,
The metal plate was filled and cooled.

Example 5 Powdery foundation: (Composition) The following pigments were treated with the compounds shown in the column of Example 1 in Table 1 by the method described in Example 1 and mixed by mixing the treated pigments. Pigment The pigment and the powder were mixed and pulverized through a pulverizer. The other bases except the fragrance were heated in advance and completely dissolved. The pulverized powder was transferred to Henschel, the liquid phase previously dissolved was gradually added, a fragrance was added, and the mixture was sufficiently stirred and mixed. During the mixing, the rotation frequency of Henschel was gradually increased. Finally, the grain size was adjusted through a sieve, and compression molding was performed for a container such as a gold plate.

Example 6 Blush: (Composition) Obtained by treating each of the following pigments with the compounds shown in the column of Example 1 in Table 1 by the method described in Example 1, and mixing the treated pigments. Mixed pigment The powder was passed through a pulverizer and heated and dissolved in advance. The pulverized powder was transferred to Henschel, the liquid phase previously dissolved was gradually added, and a fragrance was further added and sufficiently stirred and mixed. During the mixing, the rotation frequency of Henschel was gradually increased. Finally, the particles were sieved to obtain a uniform particle size, placed in a container such as a gold plate, and compression molded.

Example 7 Eyeliner: (Composition) Obtained by treating each of the following pigments with the compounds shown in the column of Example 1 in Table 1 by the method described in Example 1, and mixing the treated pigments. Mixed pigment The powder was passed through a pulverizer and heated and dissolved in advance. The pulverized powder was transferred to Henschel, the liquid phase previously dissolved was gradually added, and a fragrance was further added, followed by sufficient stirring and mixing. During the mixing, the rotation frequency of Henschel was gradually increased. Finally, the particles were sieved to obtain a uniform particle size, placed in a container such as a gold plate, and compression molded.

Example 8 Two-layer liquid foundation: (Composition) The following pigments were treated with the compounds shown in the column of Example 1 in Table 1 by the method described in Example 1, and the treated pigments were mixed. The resulting mixed pigment After the oil phase component of the above composition was dissolved at room temperature, the mixed pigment was added and dispersed with a disper. The aqueous phase component was added thereto with stirring, emulsified, and finally a fragrance was added to obtain a desired liquid foundation.

In all of Examples 4 to 8, cosmetics excellent in water repellency and oil repellency and having a good touch were obtained.

[Effects of the Invention] According to the present invention, a powder for cosmetics which is superior in water repellency and oil repellency as compared with the prior art, has no makeup collapse, has good elongation on the skin, and has a good feel upon use, and contains this powder A cosmetic is obtained.

Claims (2)

(57) [Claims] 1. The general formula (1) [In the formula, n represents an integer of 4 to 20, and 1 represents an integer of 0 to 3.] A water- and oil-repellent cosmetic powder obtained by treating a powder with a perfluoroalkyl epoxy compound represented by the following formula: . 2. A cosmetic comprising the powder according to claim 1.