JP3120162B2 - Manufacturing method of oily makeup cosmetics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an oily makeup cosmetic containing an inorganic pigment such as eyeshadow, foundation, nail polish and lipstick.

[0002]

2. Description of the Related Art In general, inorganic pigments such as talc, mica, titanium dioxide and kaolin exhibit extremely strong hydrophilic properties due to the presence of hydrophilic functional groups such as hydroxyl groups and adsorbed moisture. The affinity with the oil-based substrate made of an organic polymer compound is weak. Therefore, in the production of oily makeup cosmetics, the dispersibility of the inorganic pigment in the oily base material is poor, and the viscosity is greatly increased during stirring and mixing, which makes it difficult to handle, or the quality of the product is deteriorated due to poor dispersion of the inorganic pigment. And other problems occur. For this reason, in the prior art, in order to increase the affinity between the oily base material and the inorganic pigment, a polar group is introduced into the oily base material such as an organic compound or an organic polymer compound as a dispersion medium so as to have an ionic bond, A method has been adopted in which a certain inorganic pigment is subjected to surface treatment to weaken its ionic bond or impart covalent bond. Conventionally, surfactants such as fatty acid monoglyceride, sorbitan fatty acid ester and fatty acid alkyl amide, and fatty acid esters such as isopropyl lanolin fatty acid, hexyl laurate, and cetyl isooctanoate have been used as dispersants for oily bases of inorganic pigments. Have been.

[0003]

However, these methods cannot completely solve the problem of handling due to thickening and the problem of poor dispersion, so that only a slight improvement is made.
Further, it has a drawback that it is extremely uneconomical because it requires complicated steps and expensive equipment.

[0004]

Means for Solving the Problems In view of the above-mentioned drawbacks, the present inventors have made intensive studies and arrived at the present invention. That is, the present invention is a process for producing an oily makeup cosmetic comprising, as an essential component, a dispersant comprising an ester of a condensed hydroxy fatty acid having a degree of condensation of at least 2 and a polyhydric alcohol. Examples of the hydroxy fatty acid of the present invention include one or a mixture of two or more of ricinoleic acid, 12-hydroxystearic acid, and dihydroxystearic acid. In addition, polyvalent alcohol is alkanepolyol,
Examples include saccharides, saccharide derivatives, polyalkanepolyols, and mixtures of two or more thereof. Examples of the alkane polyols include pentaerythritol and glycerin, saccharides such as sucrose, and saccharide derivatives such as saccharide alcohols such as sorbitol and mannitol.
Examples of the polyalkane polyol include di- or tripentaerythritol and polyglycerin. The dispersants described in the claims can be produced by various methods. For example, a condensed hydroxy fatty acid obtained by first condensing a hydroxy fatty acid under heating and a polyhydric alcohol-
The ester is esterified under heating with the addition of a catalyst such as caustic soda. The progress of the esterification reaction can be confirmed by measuring the acid value, saponification value, hydroxyl value and the like.

[0005] The oily makeup cosmetic of the present invention is a cosmetic comprising an inorganic pigment dispersed in an oily base such as eyeshadow, foundation, nail polish and lipstick. The inorganic pigment is not particularly limited as long as it is a pigment which is usually used in oily makeup cosmetics. For example, titanium dioxide, kaolin, talc, bentonite, mica, red bengala, calcium carbonate, zinc laurate, carbon black, stearin Zinc acid, mica and the like. These pigments can be used alone or in combination of two or more. In addition,
There is no problem when used in combination with organic pigments such as dyes. The oily base is not particularly limited as long as it is an oily base usually used in oily makeup cosmetics. For example, liquid paraffin, castor oil, beeswax, carnauba wax, candelilla wax,
Isopropyl palmitate, lanolin alcohol octyl dodecanol, liquid lanolin and the like. These oily bases can be used alone or in combination of two or more.

The addition amount of the dispersant of the present invention is 0.1 to 100% by weight, preferably 0.1 to 50% by weight, based on the pigment or the like. The content of the pigment in the oil base is from 1 to 90.
% By weight, preferably 5 to 80% by weight. In the present invention, first, one or more kinds of oily bases are heated and dissolved, if necessary, and mixed well. Next, one or more kinds of pigments are gradually added to the oily base, mixed with stirring, and dispersed. The dispersant may be added at any point during these steps, but is preferably added to the oily base or pigment before adding the pigment to the oily base. More preferably, a dispersing agent is added and mixed and dissolved in the oil base in advance. The dispersion method is not particularly limited, but a stirring device such as a homomixer roll mill is used, and the temperature during stirring and mixing is kept at room temperature to 95 ° C. After dispersing, degas and cool if necessary. The cosmetic of the present invention obtained in this manner is not particularly limited, but includes eye shadow, foundation, lipstick, nail polish, blusher, eye liner.
Etc. can be used.

Hereinafter, the present invention will be described specifically with reference to Production Examples, Examples, and Comparative Examples, but the present invention is not limited thereto.

[0008]

【Example】

Example 1 600 g of ricinoleic acid in a 1 liter four-necked flask
The reaction was carried out at 180 ° C. while removing generated water under a nitrogen stream to obtain condensed ricinoleic acid. The acid value of this condensate was 48. Next, 350 g of this condensed ricinoleic acid, 50 g of tripentaerythritol and 0.4 g of sodium hydroxide are placed in a 1-liter four-necked flask and reacted at 250 ° C. while removing generated water under a nitrogen stream to obtain an esterified product. I got The acid value of this ester was 4.5.

Example 2 An esterified product was obtained from 350 g of the condensed ricinoleic acid and 36 g of sorbitol used in Example 1 in the same manner as in Example 1. The acid value of this ester was 5.0.

Example 3 An esterified product was obtained in the same manner as in Example 1 except that ricinoleic acid used in Example 1 was replaced with 12-hydroxystearic acid. The acid value of this ester was 5.0.

Example 4 An oily ointment type foundation was prepared according to the following formulation. Oil base: liquid paraffin 24.5% 2-ethylhexyl palmitate 15.0% lanolin alcohol 2.0% lanolin acetate 3.0% microcrystalline wax 7.0% ozokerite 7.0% candelilla wax 0.0 5% Antioxidant Disinfectant Appropriate amount Dispersant: Esterified product of Example 1 1.0% Pigment: Titanium dioxide 15.0% Talc 15.0% Kaolin 6.0% Color pigment 4.0% Fragrance Appropriate amount Then, a dispersant is added to the oily base, and the mixture is heated to 80 to 90 ° C. to dissolve it. Then, the pigment is added and dispersed by a homomixer. After degassing, the mixture was cooled to obtain an ointment type foundation.

Comparative Example 1 An ointment type foundation was prepared according to the formulation of Example 4 without adding a dispersant.
Was prepared according to the method of Example 1.

Comparative Example 2 An ointment type foundation was prepared in the same manner as in Example 1 except that the dispersant was replaced by monoethanolamide stearate.

Example 5 An ointment type eye shadow was prepared according to the following formulation. Oily base: microcrystalline wax 14.0% ceresin 7.0% acetylated lanolin 5.0% liquid paraffin 31.0% cetyl isostearate 13.0% antioxidant disinfectant proper amount dispersant: ester of Example 2 2.0% Pigment: Titanium dioxide 5.0% Talc 8.0% Gunjo 15.0% A dispersant is added to the oily base according to the above formulation, the mixture is heated to 80 to 90 ° C., dissolved, and then the pigment is added. Disperse with a homomixer. Thereafter, the mixture was degassed and cooled to obtain an ointment type eye shadow.

Comparative Example 3 An ointment type eye shadow was obtained in the same manner as in Example 5 except that the dispersant was not added.

Comparative Example 4 An ointment type eye shadow was obtained in the same manner as in Example 5 except that sorbitan monooleate was used as the dispersing agent.

Example 6 An ointment type blush was prepared according to the following formulation. Oil base: liquid paraffin 21.0% ceresin 15.0% vaseline 40.0% lanolin 5.0% antioxidant bactericide appropriate amount perfume appropriate amount dispersant: Example 3 1.0% pigment: talc 4.0% Titanium dioxide 3.0% Kaolin 5.0% Zinc stearate 1.0% Colorant 5.0% Add dispersant to oily base in the above formulation, heat and dissolve at 80-90 ° C, then use homomixer It was dispersed, degassed, and cooled to obtain an ointment type blusher.

Comparative Example 5 An ointment type blusher was prepared in the same manner as in Example 6 except that no dispersant was added.

Comparative Example 6 An ointment type blush was prepared in the same manner as in Example 6, except that ricinoleic acid monoglyceride was used in place of the dispersant.

Test Example 1 Examples 4 to 6 and Comparative Examples 1 to 6 were evaluated for pigment dispersibility and texture. Table 1 shows the results.

[0002]

[Table 1]

[0021]

According to the present invention, as proved in the above Examples and Test Examples, a complicated and uneconomical process such as introduction of a polar group into an oily base or surface treatment of an inorganic pigment can be achieved. It is clear that a high quality oily makeup cosmetic can be obtained.

Claims (2)

(57) [Claims] 1. A condensed hydroxy fatty acid having a condensation degree of 2 or more, and one or more polyhydric acids selected from the group consisting of pentaerythritol, glycerin, sucrose, sorbitol, mannitol, di- or tripentaerythritol, and polyglycerin. A substantially water-free oily makeup cosmetic containing an ester with a polyhydric alcohol and 18% or more of an inorganic pigment. 2. A condensed hydroxy fatty acid having a condensation degree of 2 or more, and one or more polyhydric acids selected from the group consisting of pentaerythritol, glycerin, sucrose, sorbitol, mannitol, di- or tripentaerythritol, and polyglycerin. An inorganic pigment dispersant for oily make-up cosmetics, comprising an ester with a polyhydric alcohol.