JP3318029B2 - Oily external preparation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the fact that dipropylene glycol and hexylene glycol, which are water-soluble in nature and are insoluble in oil, are soluble in water-insoluble and oil-soluble monohydric alcohols. Heading, the manufacturing method of blending this mixture in the usual way without emulsification technology is simple and excellent in storage stability, less sticky and uncomfortable to the skin, great moisturizing effect to prevent drying of the skin, The present invention relates to an oily external preparation having excellent effect persistence.

[0002]

BACKGROUND OF THE INVENTION Generally, oily external preparations have excellent adhesion to the skin and good persistence.
The oily feeling at the time of use is strong, and it is easy to remember stickiness and uncomfortable feeling.Therefore, conventionally, a large amount of liquid oily raw materials with low oiliness such as silicone oil and liquid paraffin are blended in a large amount, etc. It was alleviating the discomfort. In addition, water and a water-soluble polyhydric alcohol were blended into the system by an emulsification technique to reduce the oiliness at the time of use. However, the method of blending a large amount of a liquid oily material having a low oiliness such as silicone oil or liquid paraffin in a large amount only slightly reduces stickiness and discomfort to the skin. When blending water or a water-soluble polyhydric alcohol using an emulsification technique, the oily feeling at the time of use is certainly reduced, so many use this method. Requires fairly sophisticated manufacturing techniques and equipment. Emulsions are also susceptible to deterioration and denaturation due to heat, light, etc., and accordingly, long-term storage must be carefully considered.

[0003] The present invention has found that dipropylene glycol and hexylene glycol, which are water-soluble in nature and insoluble in oil, are soluble in water-insoluble and oil-soluble monohydric alcohols. Is easy to manufacture, has excellent storage stability, has less stickiness and discomfort to the skin, has a great moisturizing effect to prevent dry skin, and maintains its effect. It is intended to provide an oily external preparation having excellent properties.

[0004]

According to the present invention, (A) at least one of dipropylene glycol and hexylene glycol, and (B) at least one of a water-insoluble and oil-soluble monohydric alcohol , The mixing ratio is (A) and (B)
(A) 10 to 50 parts, when the total amount of
(B) An oily external preparation containing 50 to 90 parts and containing no surfactant.

[0005] The water-soluble dipropylene glycol and hexylene glycol referred to in the present invention are known substances.

The water-insoluble and oil-soluble monohydric alcohols referred to in the present invention are known substances, such as cetanol, lauryl alcohol, stearyl alcohol, oleyl alcohol, cetostearyl alcohol, 2-hexyldecanol, and 2-octyldodecanol. , Behenyl alcohol, jojoba alcohol and the like.

[0007] When mixed-ratio of monohydric alcohol and oil soluble in one or more water-insoluble dipropylene glycol and hexylene glycol is a water-soluble for use in the present invention is taken as 100 parts total, soluble Is 10 to 50 parts, and the water-insoluble and oil-soluble monohydric alcohol is 50 to 90 parts. The blending amount of the mixture of at least one of water-soluble dipropylene glycol and hexylene glycol and the oil-soluble monohydric alcohol in the oily external preparation of the present invention is about 2% by weight to 100% by weight. It is 30% to 100% by weight for cosmetic oil, 10% to 100% by weight for sun oil, 2% to 20% by weight for solid lipstick, and 5% to 20% by weight for solid oily foundation. The oil-soluble oils mentioned above are castor oil, oils extracted from animals and plants such as lanolin, synthetic ester oils obtained by synthesizing acids and alcohols, hydrocarbons such as liquid paraffin, and are not novel.

In the oily external preparation of the present invention, in addition to the above-mentioned essential components, solid oily raw materials such as paraffin and ceresin, pasty oily raw materials such as petrolatum and heavy liquid isoparaffin, and liquid paraffin are included in a range not to impair the object of the present invention. , Squalane, tri (caprylic / capric acid) glycerin and other liquid oily ingredients, antioxidants, preservatives, fragrances and powder pigments such as talc, mica, titanium oxide, iron oxide, tar pigments, silk powder, nylon powder, etc. Can be blended.

[0009]

EXAMPLES Hereinafter, the present invention will be specifically described with reference to Examples, but evaluation items and methods will be described in detail prior to this.

<Stability evaluation test> -10 ° C, 0 ° C, 5
The following items were observed and evaluated for one year in a constant temperature room at 30 ° C., 30 ° C., and 45 ° C. and in sunlight irradiation. No change There is change Color tone ○ × Odor ○ × External appearance ○ × Usability ○ ×

<Sensory Evaluation Test> The following items were evaluated using 20 female panelists. Somewhat no No Sticky × △ ○ Uncomfortable feeling to skin × △ ○ Moist feeling ○ △ × Persistence of moist feeling ○ △ ×

Examples 1-4 and Comparative Examples 1-4 The cosmetic oils of Example 1, Comparative Example 1, and sun oils of Example 2, Comparative Example 2 shown in Table 1 were obtained by stirring and mixing at room temperature. The solid lipstick of Example 3, Comparative Example 3 and the oily solid foundation of Example 4, Comparative Example 4 were obtained by melting, mixing and solidifying by cooling in a usual manner. The numbers in Table 1 are% by weight. The above-mentioned evaluation tests were carried out for those having different uses, and the results of the sensory evaluation tests are shown in Table 2.
In addition, in the stability tests of Examples 1 to 4 and Comparative Examples 1 to 4, no change was observed, and good results were obtained.

[0013]

[Table 1]

[0014]

[Table 2]

[0015]

As described above, according to the present invention, a production method comprising mixing at least one of dipropylene glycol and hexylene glycol insoluble in an oily raw material by an ordinary method without using an emulsification technique is simple, and a heat and light It is apparent that the present invention provides an oily external preparation having excellent storage stability, less stickiness and discomfort to the skin, a large moisturizing effect for preventing the skin from drying, and excellent sustainability of the effect.

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-58-170707 (JP, A) JP-A-63-301811 (JP, A) JP-A-57-149213 (JP, A) JP-A 55-170213 38332 (JP, A) JP-A-63-83009 (JP, A) JP-A-63-185912 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61K 7/00-7 / 50

Claims (5)

(57) [Claims] (1) at least one of (A) dipropylene glycol and hexylene glycol, and (B) cetanol, lauryl alcohol, stearyl alcohol, oleyl alcohol, cetostearyl alcohol, 2-hexyldecanol, 2-octyldodecanol, behenyl alcohol when at least one member selected from jojoba alcohol or Ranaru group, the mixing ratio is 100 parts of the total amount of (a) and (B), (a) 10 to 50 parts, (B)
An oily skin external preparation containing 50 to 90 parts and containing no surfactant. 2. A dipropylene glycol and hex
At least one of silene glycol and (B) setano
, Lauryl alcohol, stearyl alcohol, ole
Yl alcohol, cetostearyl alcohol, 2-hexyl
Sildecanol, 2-octyldodecanol, behenyl
Selected from the group consisting of alcohol, jojoba alcohol
At least one of them is mixed with the mixture ratio of (A) and (B).
When the total amount is 100 parts, (A) 10 to 50 parts, (B)
Contains 50 to 90 parts and does not contain surfactant
A cosmetic oil characterized by the fact that: (A) dipropylene glycol and hex
At least one of silene glycol and (B) setano
, Lauryl alcohol, stearyl alcohol, ole
Yl alcohol, cetostearyl alcohol, 2-hexyl
Sildecanol, 2-octyldodecanol, behenyl
Selected from the group consisting of alcohol, jojoba alcohol
At least one of them is mixed with the mixture ratio of (A) and (B).
When the total amount is 100 parts, (A) 10 to 50 parts, (B)
Contains 50 to 90 parts and does not contain surfactant
Sun oil characterized by the following. 4. A dipropylene glycol and hex
At least one of silene glycol and (B) setano
, Lauryl alcohol, stearyl alcohol, ole
Yl alcohol, cetostearyl alcohol, 2-hexyl
Sildecanol, 2-octyldodecanol, behenyl
Selected from the group consisting of alcohol, jojoba alcohol
At least one of them is mixed with the mixture ratio of (A) and (B).
When the total amount is 100 parts, (A) 10 to 50 parts, (B)
Contains 50 to 90 parts and does not contain surfactant
A solid lipstick characterized by the following. 5. A dipropylene glycol and hex.
At least one of silene glycol and (B) setano
, Lauryl alcohol, stearyl alcohol, ole
Yl alcohol, cetostearyl alcohol, 2-hexyl
Sildecanol, 2-octyldodecanol, behenyl
Selected from the group consisting of alcohol, jojoba alcohol
At least one of them is mixed with the mixture ratio of (A) and (B).
When the total amount is 100 parts, (A) 10 to 50 parts, (B)
Contains 50 to 90 parts and does not contain surfactant
A solid oily foundation characterized by the following.