JPS6323962B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for blending a moisturizing agent consisting of water, propylene glycol, maltitol, and polyhydric alcohol such as glycerin into oil-based cosmetics without using a surfactant. The present invention relates to a whipped cosmetic with an overrun of 80% to 80%, preferably 20 to 50%, which is stabilized and has improved safety.

In general, oil-based cosmetics consisting of solid waxes, oils, and powders contain water, propylene glycol, maltitol, etc., which are not well compatible with them.
It is a known technique to emulsify using a surfactant to incorporate a humectant such as glycerin.

However, in order to find a highly safe and stable emulsifier for cosmetics, the types and combinations of emulsifiers and waxes and oils to be blended are complex and difficult, and the number of moisturizers to be blended is also extremely limited. It is something that

The present invention has discovered a stable and highly safe cosmetic by whipping the oil-based cosmetic without using an emulsifier and incorporating various moisturizing agents into the oil-based cosmetic.

That is, in order to obtain a safe whipped cosmetic, the constituent wax components must be waxes with polar functional groups in the molecule and a melting point of 50°C or higher, such as candelilla wax (melting point 68-72°C) and carnauba wax (melting point 68-72°C).
80-86℃), wood wax (melting point 50-53.5℃), beeswax (melting point 60-67℃), etc.
Mix 20%. The constituent oil is one that is liquid at room temperature and has an IOB value of 0.07 to 1.5, which is compatible with wax. In addition, IOB (inorganic
The organic balance) value is the 11th
Volume, No. 10, pp. 719-725, 1957, the ratio of the inorganic and organic values calculated according to the calculation method by Fujita, that is, the value expressed by the following formula. be.

IOB value = ΣInorganic / ΣOrganic For example, castor oil (IOB04), camellia oil (IO
B.0.16), safflower oil (IOB0.17), glycerol-tri-2-ethylhexanoate (IO
B.0.34), 2-heptylundecanoic acid monoglyceride (IOB0.63), polyoxypropylene polyoxyethylene pentaerythritol ether (IOB1.25), octyldodecyl ricinoleate (IOB0.23), jojoba oil (IOB0.078), etc. These combinations are the most suitable.

After making a composition containing these waxes and oils and heating and mixing it, it is cooled until it becomes a plastic material required for whipping (a semi-solid plastic material at about 45 to 55 degrees Celsius), and then mixed with water. It is characterized by adding 5 to 30% of a humectant consisting of polyhydric alcohol and/or polyhydric alcohol, and then performing a whipping treatment with a gas (N ₂ , O ₂ , CO _{2 ,} etc.), preferably inert N ₂ gas. It is a cosmetic product that

The amount of gas used for whipping is 5-80%
and preferably 20 to 50%. The amount of gas is 5%
If it is below, a creamy composition will not be obtained and it will be difficult to commercialize it. Moreover, if it is more than 80%, it becomes foamy and a suitable whipping effect cannot be obtained, making it impossible to produce a stable whipped product.

Conventionally, whipped margarine and the like are well known as products made by whipping. For example, JP-A-53-113060, 113061
As can be seen in the above, it is described that an emulsion is prepared from a composition consisting of an edible solid oil and fat and a liquid oil at room temperature using an emulsifier together with an aqueous phase, and then whipped. However, the whipped margarine etc. obtained in this way is relatively stable under conditions below room temperature, but in the usage environment required for cosmetics, it has poor shape retention and oil-off is observed. It is difficult to fully guarantee the stability of the system. In the present invention,
In order to obtain stable whipped cosmetics that do not cause oil-off or deformation even in the temperature range used as cosmetics, we blend high-melting point waxes,
By finding a combination of oils that can be whipped without using an emulsifier, the drawbacks of whipped margarine and the like were overcome, and a new whipped cosmetic was discovered.

In addition, when selecting a high melting point wax to be blended, it is important to note that waxes that simply have a high melting point, such as waxes with low polarity such as solid paraffin, will be difficult to whip no matter what kind of oil is combined with them.
Carnauba wax, candelilla wax, wood wax, beeswax, etc., which have water-holding and emulsifying powers, are most suitable.

Furthermore, the oil to be blended must not only dissolve the waxes well, but also have appropriate emulsifying and water-holding power. That is, the above-mentioned castor oil, camellia oil, safflower oil, and glycerol are the oils that can be whipped with the selected waxes.
Examples include oils with specific IOB values such as tri-2-ethylhexanoate, polyoxypropylene polyoxyethylene pentaerythritol ether, and 2-heptylundecanoic acid monoglyceride.

Whipped cosmetics obtained by blending a moisturizing agent with a system consisting of these waxes and oils according to the purpose have good shape retention and no oil-off under the normally required environment of cosmetic use, ensuring sufficient stability. It is something that can be done.

The whipped cosmetic obtained in the present invention has been found to contain an aqueous component and a gas in the oil phase by microscopic observation.
It coexists with fine particles of 30μ and is formed from a system called G, W/O type. That is, it is a system in which gas is sealed in a W/O type plastic body.

Next, examples according to the present invention will be shown.

Example 1 Whipped Drip Glow Weight% Candelilla wax 5.0 Castor oil 83.89 Pigment 1.0 Glycerin 10.0 Fragrance 0.1 Antioxidant 0.01 (Adjustment method) Candleilla wax, castor oil, and pigment are mixed and dissolved at 70℃ and dispersed uniformly. . Next, the mixture is cooled to 50°C, and when the wax precipitates and becomes semi-solid, glycerin, fragrance, and antioxidant are added, and nitrogen gas is introduced while stirring and whipping is performed. The overrun of nitrogen gas at this time was 30%.

The whipped drip glow obtained in Example 1 has a very soft feel compared to conventional lip glow, is glossy when applied to the lips, and blends well into the lips. Ta.

In addition, when the stability was investigated, it was stored at 37°C and 50°C for one month, but there was no change or oil-off.

Also, cycle test from 5° to 45° (2 cycles/1
Even if I left it for a month, there was no change and the oil did not turn off.

Example 2 Whipped lipstick Weight % Candelilla wax 10.0 Castor oil 74.89 Pigment 5.0 Maltitol 10.0 Fragrance 0.1 Antioxidant 0.01 (Preparation method) Prepared in the same manner as in Example 1. (However, the overrun of nitrogen gas was 40%.) The whipped lipstick obtained in Example 2 had a much softer feel than conventional lipsticks, was glossy when applied to the lips, and It was very familiar to me.

In addition, when examining the stability, it was found that 1 at 37℃ and 50℃.
I kept it for several months, but there was no change and the oil did not turn off.

In addition, cycle test from 5° to 45°C (2 cycles/1
Even if I left it for a month on Sunday, there was no change and the oil did not turn off.

Example 3 Foundation Weight% Candelilla wax 8.0 Carnauba wax 3.0 Pigment {Yellow titanium oxide 2.0 Red titanium oxide 5.0 White titanium oxide 3.0} 10.0 Safflower oil 63.94 Talc 5.0 Ion exchange water 10.0 Vitamin E 0.01 Fragrance 0.05 (Preparation method) Candelilla wax, Mix and dissolve the pigment in carnauba wax and safflower oil at 70℃ and disperse it uniformly. Next, the mixture is cooled to 55°C, and when the wax precipitates and becomes semi-solid, ion-exchanged water, fragrance, and vitamin E are added, and the mixture is stirred and whipped while introducing nitrogen gas. The overrun of nitrogen gas at this time was 8%. The obtained foundation has a very soft feel and good adhesion to the skin compared to conventional foundations, has a water-resistant coating, and is resistant to makeup smearing.

Example 4 Eyeshadow Weight% Beeswax 15.0 Carnauba wax 3.0 Octyldodecyl ricinoleate 56.94 Ion exchange water 5.0 Glycerin 5.0 (Pigment) White titanium oxide 5.0 Black iron oxide 1.0 Ultramarine 4.0 Pearl agent 5.0 Vitamin E 0.01 Fragrance 0.05 (Adjustment method) Beeswax Tukus, Carnauba Lou The pigments are mixed and dissolved in octyldodecyl ricinoleate and uniformly dispersed. After cooling this to 45℃, ion-exchange water, glycerin, vitamin E, and fragrance are blended to make it homogeneous. Whip treatment was performed with 15% nitrogen gas. The obtained eyelids could be applied to the eyelids more softly than conventional eyelids, and the coating film did not have an oily shine.

Example 5 Cleansing cream Weight% Candelilla wax 7.0 Glycerol-tri-2-ethylhexanoate 30.0 Ion exchange water 20.0 Vitamin E 0.01 Fragrance 0.1 Castor oil 42.99 (Adjustment method) Candelilla wax, glycerol-tri-2-
Ethylhexanoate and castor oil are heated and mixed and kept at 65°C. After adding ion-exchanged water, fragrance, and vitamin E, the mixture is thoroughly stirred and cooled to 45°C. This is overrun with 60% nitrogen gas and whipped. The resulting cleansing cream is softer and feels better on the skin than conventional cleansing creams, and has mild cleansing properties.

Example 6 Pine surge cream Weight% Candelilla wax 7.0 Camellia oil 77.89 Ion exchange water 10.0 Glycerin 5.0 Antioxidant 0.01 Fragrance 0.1 (Adjustment method) Candleilla wax and camellia oil were dissolved and mixed at 70°C.
Distribute evenly. Add ion-exchanged water, glycerin, antioxidant, and fragrance to this and leave to cool to 50°C. This is then subjected to whipping treatment with a 50% overflow of nitrogen gas. The resulting pine surge cream was found to have remarkable effects on skin softness and usability compared to conventional pine surge creams.

Example 7 Night cream Weight% Candelilla wax 7.0 Glycerol-tri-2-ethylhexanoate 30.0 Jojoba oil 10.0 Ion exchange water 10.0 Vitamin E 0.01 Fragrance 0.1 Castor oil 42.89 (Adjustment method) Candelilla wax, glycerol-tri-2-
Ethylhexanoate, jojoba oil and castor oil
Mix and dissolve at 70℃ and disperse uniformly. Add ion-exchanged water, vitamin E, and fragrance to this, and cool to 47°C. This is then subjected to whipping treatment by overrunning nitrogen gas by 45%. The obtained night cream has superior softness and skin heat retention compared to conventional night creams.

The present invention can also be applied to other cosmetics. That is, it can be fully used in cosmetics containing surfactants, such as creams and milky lotions.

Claims (1)

[Claims] 1. Wax with a melting point of 50°C or higher that has a polar functional group in its molecule, a plastic material consisting of an oil that is liquid at room temperature and an IOB value of 0.07 to 1.5, and water and/or polyhydric alcohol overrun with gas by 5 to 80%. A stable whipped cosmetic that has been whipped.