JPS606607A - Point makeup cosmetic - Google Patents

Abstract

PURPOSE:To obtain a point makeup cosmetic having balanced feeling to the skin, luster and durability, by dispersing a silicone oil together with a pigment finely in an aqueous phase containing a clay mineral having gelling capability. CONSTITUTION:An oily phase component containing a silicone oil composed of polydimethylsiloxane or its mixture with polymethylphenylsiloxane, a pigment and if necessary a hydrophilic surface active agent, and an aqueous phase component containing a clay mineral having gelling capability (e.g. montmorillonite clay mineral, especially synthetic hectolite) are heated separately at 70-80 deg.C to effect the dissolution or dispersion of the components, and are mixed together at a ratio (oil-phase/water-phase) of 40:60-70:30, stirred vigorously at the above temperature, and cooled to obtain the objective cosmetic. The amount of the silicone oil is preferably 50-65wt% for lipstick and 10-20wt% for eye cosmetic, and that of the clay mineral is preferably 0.5-10wt%, especially 1-5wt%, based on the aqueous phase.

Description

[Detailed Description of the Invention] The present invention provides a novel liquid or paste-like point makeup product that has a well-balanced "feel of use" when used, and the "mochi" and subsequent "mochi" functions. This is what we intend to provide.

Conventionally, the mainstream of point make-up products such as lipsticks and eye colors has been so-called oil delta-tube products, in which pigments are dispersed in a combination of solid and liquid fats to form a gel structure. Ta. For example, in the case of lipstick, poor "stickiness" was pointed out as a fatal drawback of this type. Increasing the proportion of solid fat in the oil and fat has been considered as a method to improve this ``stickiness,'' but in this case, the resulting product becomes hard and has a poor ``feel when used.''"Ya"
There was a problem that the condition worsened. Furthermore, this “mochi”
Attempts have also been made to add silicone oil to improve this. Silicone oil is one of the typical oils that have a repellent property, and it has been confirmed that the higher the viscosity, the stronger this effect is.

However, the higher the viscosity, the stronger the stringiness and the greater the stickiness, and the immiscibility with other oils made it impossible to incorporate large amounts, and it was avoided to incorporate large amounts due to the "feel of use". I was beaten up.

On the other hand, eye make-up products such as eye color have been cited as having a poor "feel of use" due to their hardness due to their oil-gel structure. In order to improve this "usability",
Increasing the proportion of liquid fat had the disadvantage that it produced a ``shiny'' effect, impairing the ``powdery feel'' and ``brightness'' required for eye makeup products.

In other words, "feel of use" and "gloss" are important in point makeup.
``There are contradictory factors at work among the three functions of Mochi J, and it was difficult to satisfy these simultaneously with the conventional oil gel type.

Therefore, in view of the above-mentioned current situation, the inventors of the present invention have carried out various experimental studies and found that silicone oil finely dispersed together with pigments in an aqueous phase containing clay minerals with gelling ability has an appropriate level of gloss. J, has slow spinnability and stickiness.
The feeling of use is improved, and a strong film is formed after application.
The present invention was completed by discovering that it has excellent rice cake and is well-balanced overall.

The present invention involves mixing an oil phase component containing silicone oil, a pigment, and optionally a hydrophilic surfactant with an aqueous phase component containing a clay mineral having gelling ability, and then heating the mixture at high temperature to strengthen the mixture. liquid or liquid characterized by being obtained by stirring
This relates to point-making fees in the form of strikes.

Silicone oils that can be applied to the present invention include polydimethylsiloxane and polymethylphenylsiloxane, which can be used alone or in the form of a mixture, but polydimethylsiloxane is particularly suitable for obtaining a wide range of viscosities. is preferred. Moreover, its viscosity is 1,000. Applicable up to OD OC8, but preferably &: l: Single or mixed oil,
For lipstick, 1.0OOC8 to 3,0OOC'S,
In eye products, 10C8 to 1oocs are advantageously used. If the viscosity is too low, the water resistance will be poor, and if the viscosity is too high, it will feel more sticky.

Further, the pigment may be any pigment that is normally used in point make-up materials, and includes, for example, inorganic and organic pigments such as iron oxide, iron oxide, chromium oxide, and legal tar pigments.

Further, as clay minerals having gelling ability, natural and/or synthetic montmorillonite group clay minerals such as montmorillonite, beidellite, nontronite, sabonite, hectorite, synthetic hectorite (trade name Laponite) or the above clay minerals are mainly used. Bentonite, acid clay, and the like contained as components can be mentioned, but among these, synthetic hectorite is particularly preferred since it can provide stable quality.

On the other hand, depending on the dosage form, other conventionally used fats and oils such as higher alcohols, waxes, volatile cyclic silicones, etc. may be added to the oil phase component or water 5-phase component, or alcohols, polyhydric alcohols, etc. It is possible to add saccharides, polysaccharides, and organic acid salts.

When carrying out the present invention, the proportions of each of the above components are as follows.

First, the ratio of the oil phase containing silicone oil and pigment to the aqueous phase containing clay minerals having gelling ability is 50 to 0.
The ratio is 80:20, preferably 40:60 to 70:30. If the oil phase is less than 60%, the "gloss" after application will be poor, and if it exceeds 80%, no oil/gel type point makeup will be produced. Also, the oil phase is 50%
If the
0.1 nonionic hydrophilic surfactant ranging from 8 to 12
Addition of ~1.0 weight fFr gives preferable results.

In reality, pigment is blended in the oil phase in an amount of 5 to 10% by weight for lipsticks and 10 to 20M for eye products, so the amount of silicone oil is blended in the range of 10 to 75% by weight. Of course, among these, lipstick is 50-6.
5% by weight, or in the range of 10 to 20% by weight for eye products, gives the most effective results in terms of overall balance of the resulting point makeup. Furthermore, as mentioned above, it is also possible to add fats and oils other than silicone oil to the oil phase, but in the case of lipsticks, it is preferable to keep the addition ratio below 30% by weight based on the total silicone oil. If too large a quantity is added, there is a greater risk that the overall balance will be lost and the purpose of the present invention will be impaired.

Next, the content of the clay mineral having gelation ability is 0.5 to 10 times, preferably 1 to 5 times as much as the water phase. In addition, synthetic hectorite (Rabonai) XL which is most suitable for the present invention
In the case of G), it is 2 to 3% by weight. When it is less than 0.5, gelation does not occur and it separates immediately, and 1
If it exceeds 0%, gelation will become too strong and the silicone oil will not be uniformly dispersed.

The reason why there is such a wide range in the optimum blending amount of clay minerals is that these minerals are natural products and have variations in quality, so their gelling ability differs among them. Therefore, the inventors of the present invention determined the above-mentioned range by measuring the gelling ability of each oil phase/aqueous phase ratio formulation using each of the above-mentioned silica minerals.

The method of obtaining the point-making fee of the present invention is as follows. That is, silicone oil, other fats and oils selected (or adjusted) appropriately in advance, pigments, oil phase components including hydrophilic surfactants as necessary, clay minerals with gelling ability, other additives, etc. After dissolving and dispersing the aqueous phase components containing
While maintaining the temperature at ℃, stir vigorously with a 1 monme mixer such as a homogenizer or homomixer, e.g.
It is stirred for 5 to 30 minutes in a range of about 0 to 50.00 Orpm, and then cooled or left to cool. Since the obtained point makeup is in the form of an oil/gel (water) type liquid or paste, it is filled into a closed container to prevent water from volatilizing and used with a tip, brush, etc.

The following points can be mentioned about the characteristics of the point make-up composition obtained according to the present invention.

1. Since the silicone oil is finely dispersed in the gel, there is no sticky feeling when applying, making it easy to use.

2. Moisture evaporation (evaporation rate depends on the addition of ethanol etc. 1.;:
After (adjustable), the oil/gel structure is broken down to form a strong film with appropriate "gloss" and "sticky" properties.

6. Silicone oil itself has traditionally been used as a safe oil, so the point make-up agent used in 1 (I) is also highly safe.

4. Since the obtained oil/gel state is formed from clay minerals without using conventional surfactants at all or at all, it has no temperature dependence and is highly stable. are doing.

Next, the yt5 Indian make license 1 obtained by the present invention is
In order to verify whether the intended effect of the present invention was achieved by force or not, 50 women were tested using the lipstick of Example 20 and the eye color of Example 6 described below and the conventional oil gel type lipstick and eye color. A usage test was carried out as a subject, and 1 performance evaluation test was completed for each of the three evaluation items of ``feel of use'', ``gloss'', and ``stickiness''. As a result, both lipsticks were equivalent in terms of "feel of use" and "gloss," but in terms of "stickiness," the product of the present invention was 2 to 3 times longer lasting than the conventional product. However, when it comes to eye color, "shiny"
Although no significant difference was observed between the two in terms of ``mochiness'', in terms of ``feel of use'', the product of the present invention was evaluated as being extremely better than the conventional product. I. In all cases, the superiority of the product of the present invention was proven.

In addition to the above-mentioned needle-side items, the lipstick was also rated as good because the silicone oil is tasteless and odorless, so there is no odor or taste derived from the raw material fats found in conventional lipsticks.

Examples are shown below. Incidentally, the blending ratio is in parts by weight.

Example 1 Lipstick [Method] After heating and dissolving A and B at 70°C, A and B were mixed, and then, while maintaining the temperature at 70°C, they were mixed in a homomixer for 15 minutes.
．． The mixture was vigorously stirred at 00 rpm for 10 minutes, and then cooled with water.

Remove a portion of the resulting oil/gel emulsion and
A storage test was conducted for one month at 40°C and aging (-5 to 40°C), but the product was stable with no separation or deterioration observed.

Example 2 Lipstick [Method] The same method as in Example 1 was used. However, the stirring conditions are 1.
It was 0.00 rpm for 15 minutes. What was obtained was stable as well.

Example 3 Eye color [Method] The same method as in Example 1 was used. However, the stirring 1 condition is 1
It was 0.00 rpm and 10 minutes. The edict was equally stable.

Patent applicant: POLA CHEMICAL INDUSTRIES, INC.

Claims (1)

[Scope of Claims] 1) Mixing an oil phase component containing silicone oil, a nodding agent, and, if necessary, a hydrophilic surfactant, and an aqueous phase component containing a clay mineral having gelling ability, A liquid or sooty point make-up agent obtained by stirring vigorously at a high temperature. 2. A patent claim in which the silicone oil is polydimethylsiloxane or a mixture of polydimethylsiloxane and polymethylphenylsiloxane, and the amount thereof is 10 to 75% by weight based on the total weight of the point makeup □. Scope of Point Make Fee as described in Item 1). 3) Claim 1, wherein the clay mineral having gelation ability is a senmolinite group clay mineral, and the amount thereof is 0.5 to 10% by weight based on the total weight of the aqueous phase components of the point makeup composition. Point make fee as stated in section.