JPH11335227A - Surface treated powder and cosmetic containing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To develop a method for treating a powder so as to provide a treated powder good in compatibility with skin and having excellent hydrophobicity and to obtain the hydrophobized powder suitable for a cosmetic. SOLUTION: A powder treated with one or more kinds selected from an alkaline earth metal salt and an amphoteric metal salt of a fluoroalkylphosphoric ester represented by the formula [(n) denotes an integer of 1-20; (m) denotes an integer of 1-3] is prepared and contained in a cosmetic. Thereby, a method for treating the powder so as to provide the treated powder good in compatibility with skin and having excellent hydrophobicity is developed to afford the hydrophobized powder suitable for the cosmetic.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a treated powder suitable as a raw material for cosmetics and a cosmetic containing the same.

[0002]

2. Description of the Related Art In cosmetics containing powders such as make-up cosmetics, hydrophobic treatment of the surfaces of these powders can improve the quality of the cosmetics, such as improving the durability of the makeup and maintaining the finish of the makeup. This is a very important factor. For this reason, various powder surface treatment methods have been developed. For example, a method of baking hydrogen methylpolysiloxane, a treatment with a silane coupling agent, a treatment of a fluoroalkyl phosphate with a salt of diethanolamine, an alkali metal, an organic amine, a basic amino acid, and the like have been devised. However, in the baking treatment of silicones, hydrophobization may not be sufficient, and in the case of a silane coupling agent or a fluoroalkyl phosphate salt, the hydrophobicity is too strong, so that skin adaptation is poor, and there is a case where swelling occurs. In addition, because of poor wettability with the added fats and oils, the color may become non-uniform, and there is a problem that a great effort must be made for color matching and the like when forming a dosage form. That is, the development of a powder treatment method having good skin familiarity and excellent hydrophobicity has been desired.

On the other hand, it has never been known that a powder is treated with an alkaline earth metal salt or an amphoteric metal salt of a fluoroalkyl phosphate represented by the following general formula (I). It was not known at all that the treated powder had good skin familiarity and had excellent hydrophobicity.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made under such circumstances, and has developed a powder treatment method having good skin familiarity and excellent hydrophobicity, which is suitable for cosmetics. It is an object to provide a hydrophobized powder.

[0005]

In view of such a situation, the present inventors have considered that
In pursuit of a powder treatment method that has good skin familiarity and excellent hydrophobicity, as a result of intensive research efforts, alkaline earth metal salts and amphoteric metal salts of fluoroalkyl phosphates represented by the general formula (I) have been obtained. It has been found that such a hydrophobizing treatment can be carried out by such a treatment, and a hydrophobized powder suitable for cosmetics can be obtained by such a treatment, thereby completing the invention. Hereinafter, the present invention will be described in detail focusing on embodiments.

[0006]

Embedded image General formula (I) (wherein, n represents an integer of 1 to 20, and m represents an integer of 1 to 3)

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION (1) Hydrophobic powder of the present invention The hydrophobic powder of the present invention is treated with a salt of an alkaline earth metal and an amphoteric metal of the compound represented by the above general formula (I). It is characterized by having. In the general formula (I), n is 1
Represents an integer of -20, and m represents an integer of 1-3. That is,
Preferred examples of the general formula (I) include fluoroalkyl phosphoric acid monoesters, fluoroalkyl phosphoric acid diesters, and fluoroalkyl phosphoric acid triesters. Of these, fluoroalkyl phosphoric acid diesters are particularly preferred. Examples of the fluoroalkyl group include a pentafluorobutyl group, a heptafluoropentyl group, a nonafluorohexyl group, a monodecafluoroheptyl group, a tridecafluorooctyl group, a heptadecylfluorodecyl group, a henicosafluorododecyl group, and a heptatriacontafluoro group. Preferable examples include an icosyl group and the like, and among these, a tridecylfluorooctyl group and a heptadecafluorodecyl group are particularly preferable. These compounds can be obtained by condensing phosphorus oxychloride and an alcohol having a full alkyl group in the presence of an alkali, but are already commercially available as compounds, and it is also possible to purchase and use such a commercially available product. it can. Examples of the alkali metal forming a salt therewith include calcium, magnesium, and strontium. Of these, calcium and magnesium are preferable, and calcium is particularly preferable. Further, as the amphoteric metal, zinc and aluminum can be particularly preferably exemplified. Since these are elements that have been used in cosmetics, they are suitably used in this manner.

As a method of treating powder with one or more kinds selected from alkaline earth metal salts and amphoteric metal salts of the compound represented by the above general formula (I), for example, a water-soluble alkali 1 selected from earth metal salts and amphoteric metal salts
A preferred example is a method in which a powder is dispersed in a seed or two or more kinds of aqueous solutions, a compound represented by the general formula (I) or a solution thereof is added thereto, and then the powder is separated and washed with water. Preferred examples of water-soluble salts include chlorides and nitrates. The treatment amount is such that the alkaline earth metal salt and the amphoteric metal salt of the general formula (I) are 0.1 to 10% by weight, more preferably 0.5 to 8% by weight, based on the total amount of the powder. Processing is preferred. This is because this treatment amount is preferable from the viewpoint of hydrophobicity and less twist. Of course, in this treatment, a plurality of kinds of metal salts and a plurality of kinds of fluoroalkyl phosphates can be used. Further, in addition to the alkaline earth metal or the amphoteric metal, other base components may be contained as a composite salt. Preferred examples of such other base components include organic amines such as triethylamine and triethanolamine, and alkali metals such as ammonium, sodium and potassium. In such a composite salt, it is preferable that the total amount of the alkaline earth metal and the amphoteric metal is combined to be at least 50% by weight or more based on all base components. In the present invention, the powder can be fluoroalkyl-modified without using an expensive silylating agent.

(3) Cosmetic of the present invention The cosmetic of the present invention is characterized by containing the above-mentioned treated powder. Examples of the cosmetics of the present invention include basic cosmetics such as creams and lotions, foundations, makeup cosmetics such as mascara, eye color, and cheek color, soaps, cosmetics for washing such as shampoo, hair colors, hair treatments, and the like. Although it can be applied to any cosmetics such as hair cosmetics such as hair creams, it is particularly preferable to apply it to make-up cosmetics because of its characteristic of reducing powder skewing and improving water repellency. The preferred content of the treated powder in the cosmetic of the present invention is 0.1 to 70% by weight,
More preferably, it is 1 to 60% by weight.

[0010] In addition to the above-mentioned treated powder, the cosmetic of the present invention can contain optional components usually used in cosmetics. Examples of such optional components include hydrocarbons such as petrolatum and microcrystalline wax, esters such as jojoba oil and gay wax, triglycerides such as tallow, olive oil, higher alcohols such as cetanol and oleyl alcohol, and stearic acid. Fatty acids such as oleic acid, polyhydric alcohols such as glycerin and 1,3-butanediol, nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, ethanol, carbopol, etc. Preferred examples include a tackifier, a preservative, an ultraviolet absorber, and an antioxidant. Of these optional components, particularly preferred are those having a viscosity of 50, such as octyldodecyl oleate or high-viscosity silicone.
It is a high viscosity oil agent having 0 centistokes or more and having fluidity. The preferred content of such a high-viscosity oil is from 1 to 20% by weight. This is because the uniformity of the cosmetic finish is increased. The cosmetic of the present invention can be obtained by treating the above essential components and these optional components according to a conventional method. The cosmetic thus obtained has excellent hydrophobicity and is hard to be twisted, so that a beautiful finish can be easily obtained, and furthermore, it has a property that it lasts for a long time.

[0011]

EXAMPLES The present invention will be described in more detail with reference to examples below, but it goes without saying that the present invention is not limited only to these examples.

<Example 1> 95 g of titanium sericite was dispersed in 1 liter of water, 4.7 g of aluminum chloride was added thereto, stirred well, and 5 g of tridecafluorooctyl phosphoric acid monoester was further added with stirring. After kneading and filtration, the mixture was washed twice with water and blow-dried to obtain a treated powder 1 of the present invention.

<Embodiment 2> By the same operation as in Embodiment 1,
4.7 g of aluminum chloride was changed to 1.7 g of magnesium chloride to obtain treated powder 2.

<Embodiment 3> By the same operation as in Embodiment 1,
4.7 g of aluminum chloride was changed to 1.9 g of calcium chloride to obtain treated powder 3.

<Embodiment 4> By the same operation as in Embodiment 1,
4.7 g of aluminum chloride was changed to 2.4 g of magnesium chloride to obtain treated powder 4.

<Embodiment 5> By the same operation as in Embodiment 1,
4.7 g of aluminum chloride was changed to 2.3 g of aluminum chloride and 0.9 g of magnesium chloride to obtain treated powder 5.

<Embodiment 6> By the same operation as in Embodiment 1,
4.7 g of aluminum chloride was changed to 2.3 g of aluminum chloride and 2.3 g of triethanolamine to obtain treated powder 6.

<Example 7> In the same manner as in Example 1, the monoester of tridecafluorooctyl phosphoric acid was changed to the diester of tridecafluorooctyl phosphoric acid, and 4.7 g of aluminum chloride was changed to 2.5 g of aluminum chloride. ,
A treated powder 7 was obtained.

<Example 8> In the same manner as in Example 1, tridecafluorooctyl phosphate monoester was changed to tridecafluorooctyl phosphate triester, and 4.7 g of aluminum chloride was converted to 1.6 g of aluminum chloride. In this way, powder 8 was obtained.

<Example 9> In the same manner as in Example 1, the monoester of tridecafluorooctyl phosphate was changed to the monoester of henicosafluorododecyl phosphate, and 4.7 g of aluminum chloride was replaced with 3.2 g of aluminum chloride. To obtain a treated powder 9.

<Embodiment 10> By the same operation as in Embodiment 1,
Tridecafluorooctyl phosphate monoester was changed to heptadecafluorodecyl phosphate monoester, and 4.7 g of aluminum chloride was changed to 3.8 g of aluminum chloride to obtain a treated powder 10.

<Example 11> The treated powder 11 was obtained by changing the titanium sacite of Example 1 to sericite.

Example 12 The treated powder 12 was obtained by changing the titanium sericite of Example 1 to titanium dioxide.

Example 13 A treated powder 13 was obtained by changing the titanium sericite of Example 1 to Bengala.

Example 14 A treated powder 14 was obtained by changing the titanium sericite of Example 1 to yellow iron oxide.

Example 15 Titanium sericite of Example 1 was changed to titanium mica to obtain a treated powder 15.

<Example 16> Titanium sericite of Example 1 was changed to a reticulated methylsiloxane polymer, and
I got

<Example 17> The powders of Examples 1 to 16 were subjected to a sensory evaluation for water resistance, oil resistance and twist using a specialized paneler. For water resistance, the powder was uniformly applied to the inner part of the upper arm, rubbed with fingers while running water with tap water, and the remaining condition was ++: almost remaining, +: considerably remaining, ±: Slightly remaining,-: Judgment was made on the basis of almost no remaining. Oil resistance was similarly measured by changing the water to olive oil and pipetting. About Yore,
Spread the powder with urethane puff, and in a single rub, ++: Stripe pattern is barely visible, +: Stripe pattern is slightly visible, ±: Stripe pattern is quite visible,-: Stripe pattern is remarkable The judgment was made based on the standard. As Comparative Example 1, PF titanium sericite (manufactured by Daito Kasei Co., Ltd.) obtained by treating titanium sericite with a fluoroalkyl phosphate diethanolamine salt was used, and as Comparative Example 2, hydrogen methylsiloxane was added to titanium sericite. What was baked was used. (Baking amount 5%, hereinafter simply referred to as silicone treatment.) The results are shown in Table 1. From this table, it is found that the treated powder of the present invention is excellent in water resistance and oil resistance and has very little twist. That is, it can be seen that skin adaptation is further improved. Further, it can be seen that the treated powder of the present invention preferably has a tridecylfluorooctyl group and a heptadecafluorodecyl group as substituents.

[0029]

[Table 1]

Example 18 According to the following formulation,
Make up cosmetics. That is, the formulation components of A were mixed with a Henschel mixer, pulverized with a pulverizer equipped with a 0.9 mm round hole screen, coated with the components of B while stirring with a Henschel mixer, and fitted with a 1 mm herringbone screen. Finished and pulverized with a pulverizer, filled in a metal plate and pressed to obtain a cosmetic. For these, water resistance, oil resistance,
Yore was evaluated. Table 2 shows the details and evaluation results of these powders.
Shown in This shows that the cosmetic of the present invention has a long lasting makeup and has little twist. That is, it is understood that the cosmetic effect is improved. A Silica gel 20 parts by weight Processed powder 11 20 parts by weight Processed powder 12 15 parts by weight Processed powder 13 0.5 part by weight Processed powder 14 5 parts by weight Processed powder 15 1.5 parts by weight Processed powder 16 10 parts by weight Part Treated titanium sericite * 13 parts by weight b Octyldodecyl oleate 8 parts by weight Dimethicone (1000 centistokes) 7 parts by weight Dimethicone (10 centistokes) 5 parts by weight * Details are shown in Table 2.

[0031]

[Table 2]

<Example 28> Using the sample of Example 18, a use test was conducted for 2 weeks of continuous use using a total of 45 panelists, 15 persons per group. Evaluation items used were the uniformity of the makeup finish and the makeup lasting. The first group is Example 18
The second group uses the foundation of Comparative Example 3 below, the third group uses the foundation of Comparative Example 4 below, and the uniformity of makeup finish and makeup lasting are determined by a questionnaire. ++: Very good , +: Good, ±:
Somewhat good,-: Judged based on bad criteria. The results are shown in Table 3 as the number of cases. From these results, it can be seen that the cosmetic of the present invention is excellent in the use test in good correlation with the water resistance test, the oil resistance test, and the peel test. In other words, it can be seen that the makeup effect has been significantly improved. (Comparative Example 3) Silica gel 20 parts by weight Silicone treated sericite 20 parts by weight Silicone treated titanium dioxide 15 parts by weight Silicone treated Bengala 0.5 parts by weight Silicone treated yellow iron oxide 5 parts by weight Silicone treated titanium mica 1.5 parts by weight Silicone treated Reticulated methylsiloxane polymer 10 parts by weight Siliconized titanium sericite 13 parts by weight Octyldodecyl oleate 8 parts by weight Dimethicone (1000 centistokes) 7 parts by weight Dimethicone (10 centistokes) 5 parts by weight (Comparative Example 4) Silica gel 20 parts by weight Parts Silicone treated sericite 20 parts by weight Silicone treated titanium dioxide 15 parts by weight Silicone treated red iron oxide 0.5 parts by weight Silicone treated yellow iron oxide 5 parts by weight Silicone treated titanium mica 1.5 parts by weight Silicone Treated reticulated methylsiloxane polymer 10 parts by weight PF titanium sericite 13 parts by weight Octyldodecyl oleate 8 parts by weight Dimethicone (1000 centistokes) 7 parts by weight Dimethicone (10 centistokes) 5 parts by weight

[0033]

[Table 3]

[0034]

According to the present invention, it is possible to develop a powder treatment method having good skin familiarity and excellent hydrophobicity, and to provide a hydrophobicized powder suitable for cosmetics.

Claims (7)

[Claims] 1. A powder represented by the general formula (I), which is treated with one or more kinds selected from alkaline earth metal salts and amphoteric metal salts of fluoroalkyl phosphates. Embedded image General formula (I) (wherein, n represents an integer of 1 to 20, and m represents an integer of 1 to 3) 2. The powder comprises titanium dioxide, talc, sericite, mica, zinc oxide, iron oxide, yellow iron oxide, ultramarine,
The powder according to claim 1, wherein the powder is navy blue, titanium mica, titanium sericite, a methylsiloxane network polymer or a crosslinked dimethylpolysiloxane. 3. The powder according to claim 1, wherein the alkaline earth metal is calcium and / or magnesium. 4. The powder according to claim 1, wherein the amphoteric metal is aluminum and / or zinc. 5. A cosmetic comprising the powder according to any one of claims 1 to 4. 6. The cosmetic according to claim 5, which is a makeup cosmetic. 7. A powder is dispersed in one or more aqueous solutions selected from water-soluble alkaline earth metal salts and amphoteric metal salts, and the compound represented by the general formula (I) is dispersed therein. The method for producing a powder according to any one of claims 1 to 4, wherein the solution is added, and then the powder is separated and washed with water.