JPH05170639A - Skin cosmetic - Google Patents

Abstract

PURPOSE:To obtain a skin cosmetic, excellent in humectant effects, capable of suppressing stickiness due to a polyhydric alcohol in an organoleptic aspect and sustaining the effects for a long period by combining a 1,2-diphytanyl- glycerol derivative with a water-soluble polyhydric alcohol. CONSTITUTION:A skin cosmetic is obtained by combining at least one or more of 1,2-diphytanyl-glycerol derivatives expressed by formula I (X is formula II, III, IV, V or VI or a salt thereof) with a water-soluble polyhydric alcohol, preferably at about (1:1000) to (1:5) blending ratio. For example, 1,2-diphytanyl- glycero-3-phosphocholine is cited as the 1,2-diphytanyl-glycerol derivative expressed by formula I and, e.g. dipropylene glycol and glycerol are cited as the water-soluble polyhydric alcohol.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a skin cosmetic containing a 1,2-diphytanyl-glycerol derivative and a water-soluble polyhydric alcohol.

[0002]

2. Description of the Related Art Retention of water in the skin is an essential factor for keeping the skin healthy, and many cosmetics, pharmaceuticals and the like for the purpose of moisturizing are commercially available. Research on substances involved in moisturizing has also been actively conducted, and various moisturizers have been provided. Among them, water-soluble polyhydric alcohols are widely used in cosmetics, pharmaceuticals, etc. because of their excellent water retention and hygroscopicity. However, these water-soluble polyhydric alcohols have a strong sticky feel during use and are not preferable in terms of sensory aspects. Further, the moisturizing effect was only continued for about 1 to 2 hours after application, which was not always satisfactory. Therefore, an object of the present invention is to provide a skin cosmetic which does not have a sticky feeling during use and has a long-lasting high moisturizing effect.

[0003]

Means for Solving the Problems The present invention which achieves the above-mentioned object is represented by the following general formula (A):

[Chemical 2] A skin cosmetic comprising at least one or more 1,2-diphytanyl-glycerol derivative represented by and at least one or more water-soluble polyhydric alcohol.

As described above, by combining the 1,2-diphytanyl-glycerol derivative and the water-soluble polyhydric alcohol, the drawbacks of the conventional water-soluble polyhydric alcohol are solved, and there is no sticky feeling during use, and the moisturizing effect is obtained. Is high, and it is possible to maintain its effect for a long time.

Among the 1,2-diphytanyl-glycerol derivatives represented by the above general formula used in the present invention,
1,2-Diphytanyl-glycero-3-phosphocholine is a known substance (The 59th Annual Meeting of the Chemical Society of Japan (1
990), Lecture Proceedings p. 1793), obtained by chemical synthesis. It can also be obtained by induction from phospholipid obtained from egg yolk or the like. In addition, 1,2-diphytanyl-glycero-3-phosphoethanolamine,
1,2-diphytanyl-glycero-3-phosphoserine,
1,2-Diphytanyl-glycero-3-phosphoinositol, 1,2-diphytanyl-glycero-3-phosphate, or a salt thereof can be obtained in the same manner as the above compound. Examples of the salt include sodium salt, potassium salt, ammonium salt, alkanolamine salt and the like.

The content of the 1,2-diphytanyl-glycerol derivative is preferably 0.01 to 20.0% by weight, more preferably 0.1 to 10% by weight, based on the total amount of the ingredients of the cosmetic composition of the present invention. It is 0% by weight. Compounding amount is 0.0
If it is less than 1% by weight, the effect aimed at by the present invention is not sufficient, while if it exceeds 20.0% by weight, the improvement of the effect commensurate with the increase cannot be expected.

The water-soluble polyhydric alcohol used in the present invention has two or more hydroxyl groups in the molecule, and examples thereof include dipropylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, glycerin and diglycerin. Glycerin, triglycerin, tetraglycerin, decaglycerin, maltitol, sucrose, fructose, xylitol, sorbitol, maltriose, polyethylene glycol and the like can be mentioned, and one or more of them can be used.

The 1,2-diphytanyl-glycerol derivative used in the present invention and the water-soluble polyhydric alcohol are preferably mixed in a mixing ratio of about 1: 1000 to 1: 5.

In the skin cosmetic of the present invention, in addition to the above, pigments, fragrances, preservatives, surfactants, alcohols, liquid paraffin, pigments, antioxidants, water-soluble polymers, etc. are achieved to achieve the object of the present invention. It can be appropriately blended within the range.

The cosmetics of the present invention are applied to creams, emulsions, lotions, foundations and the like.

[0011]

EXAMPLES The present invention will be described in detail below with reference to Examples, Comparative Examples and Test Examples, but the present invention is not limited thereto.
% In the test examples, comparative examples, and examples is wt%. Also,
The methods of the moisture retention test and the practical property test are as follows.

(1) Moisture retention test After washing the face, the sample was applied, and after 0, 2, 4.8, and 24 hours,
Conductivity with skin resistance meter (unit: micro mho)
Was measured and the moisturizing property was evaluated.

(2) Practical characteristics test Practical tests were carried out by 20 female panelists to find "moderate moisturizing feeling" and "sticky feeling" for "moisturizing feeling", "sticky feeling", "persistence of moisturizing feeling". No. ”,“ Moisture feeling persists ”.

Test Example 1 Ethanol 10.0 (%) 1,2-Diphytanyl-glycero-3-phosphocholine 0.1 Glycerin 20.0 Purified water 69.9 (Production method) 1,2-Diphytanyl-glycero-3 in ethanol -After phosphocholine was dissolved, glycerin and purified water were added and mixed and stirred.

Comparative Example 1 Ethanol 10.0 (%) Glycerin 20.0 Purified water 70.0 (Production method) Ethanol, glycerin and purified water were mixed and stirred.

FIG. 1 shows the results of the moisture retention test of Test Example 1 and Comparative Example 1, and Table 1 shows the results of the practical characteristic test.

[Table 1]

As shown in the results of FIG. 1 and Table 1, Test Example 1 was superior to Comparative Example 1 in all respects and was particularly excellent in that "no sticky feeling" was observed. From the above results, it is clear that the 1,2-diphytanyl-glycerol derivative suppresses the stickiness of the water-soluble polyhydric alcohol and maintains the moisturizing effect.

Example 1 Emulsion (1) Sorbitan sesquioleate 0.15 (%) Polyoxyethylene (20 EO) 0.5 Sorbitan monooleate Cetanol 1.0 Vaseline 2.0 Squalane 5.0 Butylparaben 0.1 (2) 1,2-diphytanyl-glycero-3-0.9 phosphoethanolamine glycerin 10.0 dipropylene glycol 8.0 methylparaben 0.1 xanthan gum 0.2 sodium cetylsulfate 0.3 purified water 71. 75 (Production method) (1) and (2) were dissolved by heating at about 80 ° C., (1) was added to (2), mixed and dispersed, and then cooled to room temperature to obtain an emulsion according to the present invention. ..

Table 2 shows the practical characteristic test results of Example 1.

Example 2 Foundation (1) Cetanol 3.0 (%) Vaseline 5.0 Glyceryl monostearate 2.5 Stearic acid 3.0 Butylparaben 2.0 Polyoxyethylene (10 EO) 1.0 Stearyl ether (2) sorbitol 10.0 1,3-butylene glycol 12.0 1,2-diphytanyl-glycero-3-0.5 phosphoinositol blended powder 15.0 sodium cetyl sulfate 1.2 purified water 44.8 ( Manufacturing method) A foundation according to the present invention was obtained in the same manner as in Example 1. Table 2 shows the practical characteristic test results of Example 2.

Example 3 Cream (1) Cetanol 2.5 (%) Glyceryl monostearate 2.0 Stearic acid 2.5 Lanolin 2.0 Squalane 5.0 Liquid paraffin 5.0 Butylparaben 0.2 (2) Maltitol 16.0 1,2-Diphytanyl-glycero-3-phosphate 0.05 Carboxyvinyl polymer 0.2 Purified water 64.55 (Production method) A cream according to the present invention was obtained in the same manner as in Example 1. Table 2 shows the practical characteristic test results of Example 3.

Comparative Example 2 Emulsion (1) Cetanol 1.0 (%) Vaseline 2.0 Squalane 5.0 Butylparaben 0.1 (2) Sodium cetyl sulfate 0.5 Dipropylene glycol 18.0 Methylparaben 0.1 Xanthan gum 0.2 Purified water 73.1 (Production method) In the same manner as in Example 1, an emulsion of Comparative Example 2 was obtained.
Table 2 shows the practical characteristic test results of Comparative Example 2.

[Table 2]

As shown in Table 2, all of the emulsions, foundations and creams of the present invention were excellent in all respects. In particular, it was extremely superior to the comparative example in that it had "no stickiness". On the other hand, Comparative Example 2
Although it had a "moist feeling", it was inferior in sustainability, and it was difficult to say that it had a sufficient moisturizing effect, and the "sticky feeling" was strong, which was not preferable in terms of sensory characteristics.

[0024]

As described above, the skin cosmetic of the present invention is excellent in moisturizing effect, suppresses the "sticky feeling" caused by polyhydric alcohol in terms of sensory aspects, and maintains these effects for a long time. It is clear that there is.

[Brief description of drawings]

FIG. 1 is a graph showing the results of hygroscopicity tests of Test Example 1 and Comparative Example 1.

Claims (1)

[Claims] 1. The following general formula (A): A skin cosmetic comprising at least one or more 1,2-diphytanyl-glycerol derivative represented by and at least one water-soluble polyhydric alcohol.