JPH10203956A - Cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cosmetic excellent in moisture-retaining effect and free from stickiness by compounding a polyhydric alcohol having two or more hydroxyl groups in the molecule with a specific amount of a specific amide compound. SOLUTION: This cosmetic is obtained by compounding 0.5-50wt.% polyhydric alcohol having two or more kinds of hydroxyl groups in the molecule and then, compounding one or two or more kinds of amine compounds of the formula (R is an alkyl or an alkenyl; A is an alkylene; B is n alkylene; Y is carboxyl, sulfone, sulfate, etc.) in a weight ratio of 0.01-4 based on the polyhydric alcohol therewith. The polyhydric alcohol includes e.g. dipropylene glycol, 1,3-butylene glycol or glycerol. The amide compound of the formula includes e.g. N,N'-bis(2- myristoylamideethyl)ethylenediamine-N,N'-di(sodium acetate).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a cosmetic composition in which the stickiness in use caused by a polyhydric alcohol having two or more hydroxyl groups in the molecule is solved by blending a specific amide compound.

[0002]

2. Description of the Related Art Moisture retention on skin is an essential factor for keeping skin healthy, and many cosmetics for moisturizing are commercially available. Research on substances involved in moisturizing has also been actively conducted, and numerous moisturizers have been provided. Among them, polyhydric alcohols having two or more hydroxyl groups in the molecule are widely used in cosmetics because of their excellent moisture retention and hygroscopicity. However, while these polyhydric alcohols have an excellent effect of keeping skin healthy and normalizing rough skin, the use feeling is quite sticky, especially in cosmetics that require a good use feeling. Has become a big problem.

[0003]

In view of the above circumstances, the present inventors have conducted intensive studies to obtain a cosmetic having an excellent moisturizing effect and an excellent feeling in use, and as a result, have identified a specific amide compound in the cosmetic. It has been found that a good cosmetic composition having excellent moisturizing effect and having no stickiness can be obtained by mixing the amount, and the present invention has been completed.

[0004]

That is, the invention of claim 1 of the present invention relates to a cosmetic comprising 0.5 to 50% by weight of a polyhydric alcohol having two or more hydroxyl groups in a molecule. General formula (1) having a weight ratio of 0.1 to 4 with respect to the polyhydric alcohol

[0005]

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Wherein two Rs are the same or different and each represents a linear or branched alkyl or alkenyl group having 1 to 24 carbon atoms which may be substituted with a hydroxyl group, and A represents a hydroxyl group Or a straight-chain or branched-chain alkylene group having 1 to 6 carbon atoms which may be substituted by a carboxyl group, and B represents a straight-chain or branched-chain alkylene group having 2 to 6 carbon atoms which may be substituted by a hydroxyl group. Indicates that
Y represents a carboxyl group, a sulfone group, or a sulfate group or a salt thereof), and is a cosmetic characterized by incorporating one or more of the amide compounds represented by the formula (1).

[0007]

Next, an embodiment of the present invention will be described. The polyhydric alcohol in the present invention has two or more hydroxyl groups in the molecule, and includes, for example, dipropylene glycol, 1,3 butylene glycol, 1,4 butylene glycol, glycerin, diglycerin, maltose, maltitol, and sucrose. , Fructose, xylitol, sorbitol, erythritol and the like. One or two or more of these are used. The present invention has a remarkable effect in a cosmetic containing a polyhydric alcohol having three or more hydroxyl groups in the molecule. The compounding amount of the water-soluble polyhydric alcohol is 0.5 to 25% by weight based on the total amount of the cosmetic.
The effect of the present invention is remarkable in cosmetics containing 10 to 10% by weight. If it is less than 0.5% by weight, a moisturizing effect cannot be obtained,
If it exceeds 25% by weight, stickiness cannot be suppressed.

The amide compound used in the present invention means all the compounds represented by the above-mentioned molecular structural formula. For example, N, N′-bis [2-myristoamilamidoethyl) ethylenediamine-N, N′-di (sodium acetate),
N, N'-bis [2-myristoylamidoethyl) ethylenediamine-N, N'-di (sodium acetate);
N'-bis [2-palmitoiramidoethyl) ethylenediamine-N, N'-di (sodium acetate), N, N'-
Bis [2-lauramidoethyl) ethylenediamine-N,
N'-di (sodium propionate), N, N'-bis [2-myristoylamidoethyl) ethylenediamine-
N, N'-di (sodium propionate), N, N'-
Bis [2-palmitoiramidoethyl) ethylenediamine-N, N'-di (sodium propionate), N, N '
-Bis (lauroylamide) ethane-N, N'-di (sodium acetate), N, N'-bis (myristoylamide) ethane-N, N'-di (sodium acetate), N,
N'-bis (palmitoylamide) ethane-N, N'-
Di (sodium acetate), N, N'-bis (lauroylamide) ethane-N, N'-di (sodium propionate), N, N'-bis (myristoylamide) ethane-
N, N'-di (sodium propionate), N, N'-
Bis (palmitoylamide) ethane-N, N'-di (sodium propionate), N, N'-bis (lauroylamido) butane-N, N'-di (potassium acetate), N,
N'-bis (myristoylamide) butane-N, N'-
Di (potassium acetate), N, N′-bis (palmitoylamido) butane-N, N′-di (potassium acetate),
N'-bis (lauroylamido) ethane-N, N'-di (potassium ethanesulfonate), N, N'-bis (myristoylamido) butane-N, N'-di (potassium ethanesulfonate), N, N'-bis (palmitoylamide) hexane-N, N'-di (sodium ethanesulfonate). In addition, as the amide compound applied to the present invention, an amide compound in which a sulfate group is introduced instead of the sulfonic acid group is also applied. The amount of such an amide compound is effective in a weight ratio of 0.1 to 4 with respect to the amount of the polyhydric alcohol having two or more hydroxyl groups in the molecule. If the weight ratio is less than 0.1 with respect to the polyhydric alcohol amount, the effect is slight even if effective. If the weight ratio exceeds 4, the stickiness inherent to the amide compound hinders the feeling of use.

The cosmetic of the present invention has the composition as described above, but may contain other surfactants, emulsifying aids, fragrances,
Coloring agents, preservatives, pigments and the like can be appropriately compounded within a range that achieves the object of the present invention. The cosmetic of the present invention can be applied not only to milky lotions, creams, lotions, but also to cosmetics such as cleansing lotions, facial cleansers, body shampoos and the like.

[0010]

EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited to these examples. In addition, the compounding amount is weight%.

Example 1 Nutritional cream (A) Cetanol 5.0 Stearic acid 3.0 Vaseline 7.0 Squalane 10.0 Isopropyl myristate 2.0 Glyceryl monostearate 3.0 Ethylparaben 0.2 Fragrance 0.2 (B) dipropylene glycol 25.0 N, N'-bis [2-myristoamilamidoethyl) 2.5 ethylenediamine-N, N'-di (sodium acetate) purified water 41.9 potassium hydroxide 0.2 ( Production method) The oil phase of A and the aqueous phase of B were each 70 ° C.
After heating to complete dissolution, mix the oil phase with the aqueous phase,
Emulsify with an emulsifier. The emulsion was cooled to a final temperature of 30 ° C. in a heat exchanger to obtain a cream.

Example 2 Nutrition cream (A) Cetanol 5.0 Stearic acid 3.0 Vaseline 7.0 Squalane 10.0 Isopropyl myristate 2.0 Glyceryl monostearate 3.0 Ethylparaben 0.2 Fragrance 0.2 (B) Dipropylene glycol 45.0 N, N'-bis [2-myristoamilamidoethyl) 4.5 Ethylenediamine-N, N'-di (sodium acetate) Purified water 19.9 Potassium hydroxide 0.2 ( Production method) According to Example 1.

Example 3 Nutrition cream (A) Cetanol 5.0 Stearic acid 3.0 Vaseline 7.0 Squalane 10.0 Isopropyl myristate 2.0 Glyceryl monostearate 3.0 Ethylparaben 0.2 Fragrance 0.2 (B) Dipropylene glycol 1.0 N, N'-bis [2-myristoamilamidoethyl) 4.0 Ethylenediamine-N, N'-di (sodium acetate) Purified water 64.4 Potassium hydroxide 0.2 ( Production method) According to Example 1.

Comparative Example 1 Nutrition cream (A) Cetanol 5.0 Stearic acid 3.0 Vaseline 7.0 Squalane 10.0 Isopropyl myristate 2.0 Glyceryl monostearate 3.0 Ethylparaben 0.2 Fragrance 0.2 (B) dipropylene glycol 1.0 N, N'-bis [2-myristoylamidoethyl) 5.0 ethylenediamine-N, N'-di (sodium acetate) purified water 63.4 potassium hydroxide 0.2 ( Production method) According to Example 1.

Comparative Example 2 Nutrition cream (A) Cetanol 5.0 Stearic acid 3.0 Vaseline 7.0 Squalane 10.0 Isopropyl myristate 2.0 Glyceryl monostearate 3.0 Ethylparaben 0.2 Fragrance 0.2 (B) Dipropylene glycol 1.0 N, N'-bis [2-myristoylamidoethyl) 0.07 Ethylenediamine-N, N'-di (sodium acetate) Purified water 68.33 Potassium hydroxide 0.2 ( Production method) According to Example 1.

Table 1 shows the results of determining the usability of each embodiment and comparative example.

[0017]

[Table 1]

(Judgment) A: Non-sticky B: Slightly sticky but within a range where there is no problem in use. C: Sticky D: Notably sticky

From the results, the amide compound of the present invention [N,
It is clear that the combination of N'-bis [2-myristoamilamidoethyl) ethylenediamine-N, N'-di (sodium acetate)] suppresses the stickiness of the water-soluble polyhydric alcohol.

[0020]

As described above, it is apparent that the present invention provides a cosmetic having an excellent moisturizing effect and a good feel upon use.

Claims (1)

[Claims] 1. A cosmetic comprising 0.5 to 50% by weight of a polyhydric alcohol having two or more hydroxyl groups in a molecule, wherein the weight ratio of the polyhydric alcohol to the general formula is 0.1 to 4. (1) (Wherein, two Rs are the same or different and each represents a linear or branched alkyl or alkenyl group having 1 to 24 carbon atoms which may be substituted by a hydroxyl group, and A represents a hydroxyl group or a carboxyl group Represents a linear or branched alkylene group having 1 to 6 carbon atoms which may be substituted,
B represents a linear or branched alkylene group having 2 to 6 carbon atoms which may be substituted with a hydroxyl group, and Y represents a carboxyl group, a sulfone group, a sulfate group or a salt thereof) A cosmetic comprising one or more amide compounds.