JPS61176513A - Solid cosmetic - Google Patents

Abstract

PURPOSE:To provide a solid cosmetic consisting of a sintered material composed mainly of two kinds of inorganic pigments having different shaped, capable of keeping definite quality irrespective of the season and district, usable without problems, and suitable as a thin rod-shaped cosmetic such as eyeliner, eyebrow pencil, etc. CONSTITUTION:A while consmetic having a porosity of preferably 50-90% is produced by kneading (A) an inorganic pigment composition containing an inorganic pigment forming porous skeleton as a main component for maintaining the strength and dispersed in the cosmetic in powdery form with (B) one or more additives selected at need from water, diluent for various resins, solvent, other molding assistant, sintering assistant, etc., forming the kneaded composition in the from of a rod or other form, and sintering the formed product. The pore of the cosmetic may be impregnated with perfumery, color-modifying agent such as dye solution, or an agent to improve the fixing of the cosmetic to the skin after application, or may be subjected to the discoloration treatment after the sintering operation. The inorganic pigment is e.g. kaolin, organic bentonite, titanium oxide, iron oxide, chromium oxide, ultramarine, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] This invention relates to solid cosmetics. It is particularly suitable for eyeliners, eyebrows, etc., which are used as small diameter rods.

[Conventional technology]

Solid cosmetics generally consist of colorants and excipients.

The colorants are pigments and dyes, the excipients are higher alcohols, higher fats, waxes, etc., and oily substances and hemihedral substances such as liquid paraffin, lanolin, and petrolatum are also often included.

Solidification is done by thoroughly kneading the 9 colorant and excipient, then extruding it or pouring it into a mold.However, when the excipient is applied to the surface of the pigment and it is compressed to become a solid. There are also such things.

[Problem that the invention seeks to solve]

The excipient material plays a major role in maintaining strength.

Shaped materials generally become soft when the temperature rises a little, so for example, in the case of a rod-shaped material, the touch and applicability during use will vary significantly between low and high temperatures.

[Means for solving problems]

The gist of the present invention is a solid cosmetic made of a sintered body containing at least an inorganic pigment forming a porous skeleton and an inorganic pigment dispersed in powder form.

Examples of inorganic pigments are talc, kaolin, bentonite,
Calcium carbonate, magnesium carbonate.

Magnesium silicate, silicic anhydride, titanium oxide.

These include fermented zinc, iron oxide, sunkatrium, and gunjo.

The inorganic pigments include those that form a porous skeleton and those that are dispersed and contained in powder form, each consisting of one or more types.

Further details will be given below by explaining a manufacturing method example.

A material for an inorganic pigment that forms a porous skeleton (hereinafter referred to as material A and a material C for an inorganic pigment dispersed in powder form, hereinafter referred to as material B) are prepared. Clay-based materials are easy to obtain and can be sintered at relatively low temperatures, making them suitable materials. Material A and material B do not necessarily have to be the same as the inorganic pigment present in the solid cosmetic of the present invention. For example, if modified bentonite, such as organic bentonite, is used for sintering, it will change. In addition, some materials are transformed by the atmosphere during the sintering process, for example.

After thoroughly kneading material A and material B, excipient materials such as filtered water and various resins, core materials, other molding aids, sintering aids, etc., used as necessary, extrusion molding or other suitable molding is performed. The solid cosmetic of the present invention can be obtained by molding it into a rod shape or other shape and sintering it, but since the product after sintering has pores, fragrances, dye solutions, etc. It may be impregnated with a color tone adjusting material or a fixation improving material during application, or it may be subjected to a color change treatment after sintering, and these can be used to form the solid cosmetic of the present invention. Incidentally, regarding the pores, it is preferable that the porosity is about 50 to 90 inches. The most preferred range is 65% to 85%. The higher the porosity, the better the touch and applicability during use. The lower the porosity and the higher the density, the higher the strength tends to be. Porosity can be adjusted by adjusting the temperature during sintering, material A, and material B.
This can be done by changing the usage ratio of .

[For production]

The inorganic pigment that forms the porous skeleton plays a major role in maintaining strength, and is applied together with the inorganic pigment that is dispersed in powder form.

〔Example〕

Hereinafter, parts simply refer to parts by weight.

(Example 1) Clay (kaolin type) 17 parts Red iron 501 Polyvinyl chloride
501 dioctyl phthalate)
2at aluminum stearate
/Qt methyl ethyl ketone 1
051 - The above compounded materials were mixed using a mixer and a roll machine, and then extruded into a thin wire shape. After cutting into lengths of 40tx, place them in a magnetic crucible at 300°C in an oxidizing (air) atmosphere.
The sintering process was performed by holding the sample at a maximum temperature of 900° C. for 1 hour while gradually increasing the temperature. After natural cooling, the product taken out is a brown stick that can be easily applied to the skin, with diameter and FiL.
5 intestines, and the porosity was 82 cm.

(Note) Porosity was measured by the displacement method (20°C).

That is, when the volume of the rod-shaped object is V1, the weight is W, the weight of the rod-shaped object after water is boiled and impregnated is W, and the density of the water is 〆.

Porosity = l CW-W)//'V IXl 00 (chi) (Example 2) Clay (kaolin type) 18 parts red iron oxide 571 titanium oxide
10fABlftffi
37/Dioctyl phthalate 201 Stearic acid
21 Methyl ethyl ketone
100rUsing the above-mentioned compounded materials, a brown rod-like product with a porosity of 75cm, which can be easily applied to the skin, was obtained in the same manner as in Example 1.

(Example 3) Organic bentonite 22 parts chromium oxide 50 parts Mengara
201ABS resin
501 dioctyl phthalate
181 stearic acid
21 Methyl Ethyl Ketone 1001 Using the above-mentioned compounded materials, a brown bar with a porosity of 65 cm and which can be easily applied to the skin was obtained in the same manner as in Example 1.

(Example 4) Clay (bentonite type) 20 parts black iron oxide 201 chromium diluted
101 titanium mortaride
101 polymethyl methacrylate
451 dioctyl phthalate
251 Methyl Ethyl Keto 7 1001 After mixing the above compounded materials with a mixer and a roll machine, mix them at 250°C.
The mixture was heated to 230°C to sufficiently remove methyl ethyl ketone and dioctyl phthalate, and then extruded into a thin wire while being heated to 230°C.

After cutting to length 4Qxx, sintering treatment was performed in a non-oxidizing atmosphere by gradually increasing the temperature to 300°C and holding the maximum temperature at 800°C for 1 hour. After natural cooling, what was taken out was a black rod-shaped material with a porosity of 58 cm that could be easily applied to the skin. Note that polymethyl methacrylate was depolymerized and no carbide remained.

(Comparative Example 1) Carnauba wax 15 parts Ceresin wax 151 Microcrystalline wax 20/Vaseline
71 lanolin
5′ liquid rose, fin
71 myristin isopropyl
511 30 parts of carbon black and 10 parts of titanium oxide were added to a uniform solution of the above ingredients.

After kneading with a roll machine, a black rod-shaped body that could be poured into a mold and easily applied to the skin was obtained (the diameter was t 5 as in each example).
m; same as Comparative Example 2).

(Comparative Example 2) Carnauba wax 10 parts Paraffin wax 201 Candelilla wax 61 Minor wax
11 Instearic acid
51 Liquid paraffin
71 Methylphenylpolysiloxane 41
15 parts of black iron oxide, 25 parts of red iron oxide, and 3 parts of Merck were added to a uniform solution of the above compounded materials.

After kneading on a roll machine, a dark brown rod was obtained which could be poured into a mold and easily applied to the skin.

〔Effect of the invention〕

The table below shows the results of examining the temperature dependence of the results obtained on each side.
Shown in 1.

Table 1 According to Table 1, the temperature dependence of the samples obtained in each example was 0%, while the bending strength decreased by 47% in Comparative Example 1 and by 32% in Comparative Example 2. It can be seen that this occurs with a temperature increase of only 10°C.

In this way, the solid cosmetic of the present invention provides the user with a constant quality regardless of the season or location, so the user can use it without anxiety once he or she has a sense of recognition.

Claims (1)

[Claims] A solid cosmetic comprising a sintered body mainly consisting of an inorganic pigment forming a porous skeleton and an inorganic pigment dispersed in powder form.