JPH0624939A - Solid oily cosmetic - Google Patents

Abstract

PURPOSE:To provide a solid oily cosmetic capable of being cast into containers because of exhibiting excellent flowability when heated and melted, free from an oily touch or appearance such as a sticky touch or an oily luster, and giving powdery finishes. CONSTITUTION:The solid oily cosmetic containing 60-85wt.% of a powdery substance is characterized in that >=20wt.% of the powdery substance is a surface-treated powdery substance having an oil absorption of 5i35 and that the cosmetic exhibits excellent flowability when heated and charged into containers.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a solid oily cosmetic,
More specifically, it has excellent fluidity during heating and filling,
The present invention relates to a solid oily cosmetic which gives a powdery finish without oily feeling such as oiliness.

[0002]

2. Description of the Related Art Conventionally, in the production of solid oily cosmetics, generally, a method of heating and melting at the time of filling and pouring into a container has been adopted. Therefore, filling with good and bad fluidity at the time of heating and melting Whether or not it depends. On the other hand, in order to eliminate the oily feeling such as greasiness and oiliness, which is peculiar to oily cosmetics, and to obtain a powdery finish, it is desired to mix a large amount of powder in the oily base. Since the fluidity at the time of dissolution is deteriorated and the filling molding becomes difficult, the amount of the powder that can be blended with the base is limited to 60% by weight.

Therefore, in order to add more powder to the oily base, a method of dropping the heated and melted state in a container such as a gold plate and then pressing to smooth the surface (Japanese Patent Publication No. 60-16).
No. 924), or a method of blending volatile oil in an oily component. However, the method of flattening the surface by pressing has a drawback in that the work efficiency is poor, and it is difficult to uniformly fill the metal plate, and the powder content is limited to 70% by weight. In addition, when blending volatile oil, there is a problem that it is necessary to improve the airtightness of the container.

[0004]

As described above, since the amount of powder blended into the oily base is limited, it has fluidity at the time of heating and filling, and is sticky and adheres peculiar to the oily base as the outer phase. It was not possible to obtain a solid oily cosmetic having a powdery finish without the drawbacks such as bad sex, discomfort and oiliness.

[0005]

Under such circumstances, as a result of intensive studies by the present inventors, 20
By using the surface-modified powder having an oil absorption of 35% or more by weight or more, it is possible to obtain a solid oily cosmetic having excellent fluidity at the time of heating and filling, having no oily feeling such as stickiness and oiliness, and giving a powdery finish. Therefore, the present invention has been completed.

That is, the present invention is a solid oily cosmetic containing 60 to 85% by weight of powder, which has fluidity when heated and filled, and 20% by weight or more of the powder is 35 or less in oil absorption. To provide a solid oily cosmetic which is a surface-modified powder of

The powder used in the present invention is not particularly limited as long as it is usually used in cosmetics. For example, titanium oxide, talc, mica, kaolin, zinc oxide, barium sulfate, magnesium carbonate, calcium carbonate, Magnesium silicate, calcium silicate, aluminum silicate, silica, red iron oxide, yellow iron oxide, black iron oxide, sunflower, konjac, tar dye, natural dye, titanium mica,
Examples thereof include iron oxide-coated mica, bismuth oxychloride, nylon powder, wool powder, silk powder and crystalline cellulose. These powders contain 60 to 60% of the total composition.
85% by weight (hereinafter referred to simply as%), preferably 70 to
85% blended. If it is less than 60%, the oily feeling peculiar to solid oily cosmetics appears, and if it exceeds 85%, it is impossible to secure the fluidity required during heating and dissolution.

In the present invention, among these powders,
It is necessary that 20% or more of the surface-modified powder has an oil absorption of 35 or less. The surface modification is performed by, for example, a fluidized bed coating method, or by dissolving the surface modification agent in a volatile solvent, mixing and dispersing it with powder to form a slurry, and heating this under reduced pressure to distill off the solvent. It can be done by The weight ratio of the surface modifier to the powder used here was 0.
It is preferably from 1 to 25: 100, particularly from 2 to 10: 100.

As the surface modifier, a general oily raw material for cosmetics can be used, which is a solid oil, a semisolid oil or a liquid oil, regardless of animal oil, vegetable oil, mineral oil or synthetic oil.
Hydrocarbons, oils and fats, waxes, ester oils, fatty acids, higher alcohols, silicone oils, lipophilic surfactants and the like can be mentioned. Specifically, for example, liquid paraffin, squalane,
Vaseline, solid paraffin wax, ceresin wax, microcrystalline wax, castor oil, mallow, gallow, beeswax, candelilla wax, carnauba wax, lanolin, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, 2-ethylhexanoic acid Cetyl, glyceryl trioctanoate, diglyceryl isostearate, propylene glycol dicaprate, dipentaerythritol fatty acid ester, olive oil, jojoba oil, macadamian nut oil, mink oil, turtle oil, almond oil, safflower oil, avocado oil, stearin Acid, oleic acid, lauric acid, myristic acid, cetanol, stearyl alcohol, oleyl alcohol, lauryl alcohol, dimethyl polysiloxane, Chill phenyl polysiloxane,
Examples thereof include methyl hydrogen polysiloxane, methyl cyclopolysiloxane, sorbitan sesquioleate, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl ether phosphoric acid and the like. These are not particularly limited, and one kind or a combination of two or more kinds can be used.

The volatile solvent is not particularly limited as long as it can uniformly dissolve or disperse the surface modifier. For example, aromatic hydrocarbons such as benzene, toluene, xylene, methyl ethyl ketone, methyl isobutyl ketone, etc. Examples of the ketones, esters such as ethyl acetate and isobutyl acetate, and alcohols such as ethanol, isopropanol, butanol and the like, or a mixture of two or more thereof.

The surface-modified powder thus obtained is
It is necessary that the oil absorption is 35 or less, preferably 30 or less. However, even if the surface modified powder having an oil absorption of more than 35 is included, the oil absorption of the entire surface modified powder may be 35 or less. In the present invention, 20 of the powder used
%, Preferably 80% or more, is required to be the surface-modified powder. If it is less than 20%, the fluidity during filling becomes poor.

In the solid oily cosmetic of the present invention, a general oily raw material for cosmetics can be used as an oily component, which is a solid oil, a semi-solid oil or a liquid oil, animal oil, vegetable oil or mineral. Hydrocarbons, fats and oils, waxes, ester oils, fatty acids, higher alcohols, silicone oils and the like can be used regardless of oil or synthetic oil. Specifically, for example, liquid paraffin, squalane, petrolatum, solid paraffin wax,
Ceresin wax, microcrystalline wax, castor oil, owl, gallow, beeswax, candelilla wax, carnauba wax, lanolin, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, cetyl 2-ethylhexanoate,
Glyceryl trioctanoate, diglyceryl isostearate, propylene glycol dicaprate, dipentaerythritol fatty acid ester, olive oil, jojoba oil, macadamian nut oil, mink oil, turtle oil, almond oil, safflower oil, avocado oil, stearic acid, Examples thereof include oleic acid, lauric acid, myristic acid, cetanol, stearyl alcohol, oleyl alcohol, lauryl alcohol, dimethylpolysiloxane, methylphenylpolysiloxane and methylcyclopolysiloxane. These are not particularly limited and may be one type or two types.
Combinations of more than one species can be used.

These oily components are contained in an amount of 15 to 4 in the total composition.
It is preferable to add 0%.

Further, the solid oily cosmetic of the present invention may contain an appropriate amount of an oily gelling agent as a solidifying agent within a range not impairing the effects of the present invention. As the oily gelling agent, those known in the field of cosmetics can be used, and examples thereof include clay minerals such as organically modified montmorillonite clay, starch fatty acid ester, lipophilic sucrose fatty acid ester, lauroyl glutamic acid dibutylamide, and dilauroyl lysine stearyl amine salt. Derivatives of N-acyl amino acid amides, esters, amine salts and the like, metal soaps such as 12-hydroxyaluminum stearate, calcium stearate, calcium palmitate and the like are used.

Further, in the solid oily cosmetic of the present invention, the components used in ordinary cosmetics, such as an aqueous component, a surfactant, a thickener, a cosmetic component, a preservative, an ultraviolet absorber, a fragrance,
Antioxidants and the like can be appropriately blended within a range that does not impair the effects of the present invention.

The solid oily cosmetic of the present invention is prepared by a conventional method.
For example, it can be produced by mixing powder with a heated and dissolved oily component, and pouring it into a container for filling.

[0017]

EFFECTS OF THE INVENTION The solid oily cosmetic of the present invention has excellent fluidity when heated and melted, so that it can be poured and filled without pressing. In addition, there is no oily feeling such as stickiness and oiliness, and a powdery finish can be obtained.

[0018]

The present invention will be further described with reference to examples, but the present invention is not limited to these examples.

Reference Examples 1 to 7 Surface modified powders having the compositions shown in Table 1 were produced. (Production method) (1) Components 8 to 12 are dissolved in 10 times the amount of isopropanol. (2) Components 1 to 7 are added to (1) and stirred, then isopropanol is distilled off and dried to obtain a surface-modified powder.

[0020]

[Table 1]

Examples 1 to 8 and Comparative Examples 1 to 6 Solid oily cosmetics having the compositions shown in Tables 2 and 3 were produced and evaluated for fluidity when heated and dissolved. The results are shown in Tables 2 and 3.

(Production Method) (1) Components 13 and 14 are heated and dissolved. (2) Components 1 to 12 are mixed and added to (1). (3) Heat and melt (2), pour into a container and fill,
Cool to obtain a solid oily cosmetic. (Evaluation method) Fluidity during heating / melting ◎: Very good ○: Good Δ: Somewhat bad ×: Poor

[0023]

[Table 2]

[0024]

[Table 3]

Example 9 and Comparative Examples 7 and 8 Solid oil foundations having the compositions shown in Table 4 were produced,
The fluidity at the time of heating and melting, the adaptability to props, the ease of spreading, the non-stickiness, and the powdery finish were evaluated. The results are shown in Table 4.

(Production Method) (1) Components 7 to 10 are heated and dissolved. (2) Components 1 to 6 are mixed and added to (1). (3) Heat and melt (2), pour into a container and fill,
Cool to obtain a solid oily foundation. (Evaluation method) The following criteria evaluated. ◎: Very good ○: Good △: Slightly bad ×: Bad

[0027]

[Table 4]

[0028]

[Table 5] Example 10 Solid oily hoho red (ingredient) (%) 1 Surface modified powder (Reference Example 3) 10 2 Surface modified powder (Reference Example 5) 30 3 Surface modified powder (Reference) Example 6) 5 4 Mica titanium 10 5 Iron oxide mica titanium 2 6 Nylon powder 3 7 Color pigment 6 8 Carnauba wax 2 9 Starch fatty acid ester 1 10 Microcrystalline wax 1 11 Squalane 10 12 2-Cetyl 2-ethylhexanoate 20 (Surface) Oil absorption of modified powder: 34)

(Production Method) (1) Components 8 to 12 are heated and dissolved. (2) Components 1 to 7 are mixed and added to (1). (3) Heat and melt (2), pour into a container and fill,
Cooled to obtain a solid oily cheek red.

The obtained solid oily hoho red had very good fluidity when heated and melted, was good in sticking to small tools, was easy to spread, and had a powdery finish without stickiness.

Claims (2)

[Claims] 1. A solid oily cosmetic containing 60 to 85% by weight of a powder, wherein 20% by weight or more of the powder has an oil absorption of 3
A solid oily cosmetic having a surface-modified powder of 5 or less and having fluidity when heated and filled. 2. A solid oily cosmetic containing 70 to 85% by weight of powder, wherein 80% by weight or more of the powder has an oil absorption of 3
The solid oily cosmetic according to claim 1, which is a surface-modified powder of 0 or less.