JPS63208505A - Cosmetic - Google Patents

Abstract

PURPOSE:To obtain a cosmetic, having remarkably improved persistence of skin refrigerant effects of 3-l-menthoxypropane-1,2-diol, by using 3-l- menthoxypropane-1,2-diol and a specific glyceryl ether together. CONSTITUTION:A cosmetic containing a glyceryl ether expressed by formula I (R is 8-24C alkyl) [particularly preferably a compound in which R is expressed by formula II (m is 4-10; n is 5-11; m+n is 11-17 and has distribution with apexes at m=7 and n=8)] and 3-l-menthoxypropane-1,2-diol expressed by formula III. The amounts of the blended ingredients are 0.1-5.0wt.% glyceryl ether and 0.001-3.0wt.% 3-l-menthoxypropane-1,2-diol. The cosmetic can be used as toilet water, such as flexible toilet water, astringent toilet water or wiping toilet water, beautifying liquids, creams, milky lotions, shampoo, hair rinse and hair tonic.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to cosmetics, more specifically, cosmetics containing glyceryl ether and 3-1-menthoxypropane-1,2-diol, which have a lasting cooling effect on the skin. Regarding excellent cosmetics.

[Conventional technology]

Characteristics desired for cosmetics used mainly in the summer and for people with oily skin include (11) providing a cooling sensation to plump skin; (2) having a long-lasting cooling effect; ,(3)
Examples include not being sticky and giving an angry touch as if trying to kidnap.

In order to obtain these properties, cosmetics have conventionally added cooling agents such as menthol, camphor, eugenol,
Incorporation of methyl salicylate, banca oil, etc. has been practiced.

[Problem that the invention seeks to solve]

However, the above-mentioned cooling agents that have been used conventionally have the disadvantage that when applied to the skin, the cooling effect is temporary and has poor sustainability, and moreover, they have a unique irritating odor.

In addition, 3-l-menthoxypropane-1,2-diol has been proposed as a cooling agent that improves the above-mentioned drawbacks, and cosmetics containing them have also been proposed (Japanese Patent Laid-Open No. 58-88
No. 334 and Japanese Unexamined Patent Publication No. 60-25908 [), these cooling agents also did not have sufficient sustainability of the cooling effect under actual usage conditions.

Therefore, an object of the present invention is to provide a cosmetic that has an excellent long-lasting effect on the skin's cooling sensation.

[Means for Solving the Problems] [The inventors of the present invention have conducted extensive research to achieve the above object. −
It has been found that by using menthoxypropane-1,2-diol in combination with a specific glyceryl ether, the duration of the skin cooling effect of 3-1-menthoxypropane-1°2-diol is significantly improved. .

The present invention was made based on the above findings, and is based on the general formula (
(2): Glyceryl ether represented by (R represents an alkyl group having 8 to 24 carbon atoms), and general formula (II) 7-1, (3-1-menthoxypropane-1 represented by JH), The present invention provides a cosmetic containing 2-diol.

The cosmetics of the present invention will be explained in detail below.

The glyceryl ether used in the present invention may be one represented by the above general formula (1), but especially in the above general formula (1), R is the formula (■): and m+n=11 to 17 and m -7, n-8) is preferable.This glyceryl ether is preferably
As disclosed in Publication No. 0, it is known as an emulsifier for skin cosmetics because it has excellent emulsion stability and is not irritating to the skin. The present inventors discovered for the first time that the durability of the cooling effect can be significantly improved by this method.

The preferred blending amount of glyceryl ether in the cosmetic composition of the present invention is 0.1 to 5.0% by weight, more preferably 0.5 to 3.0% by weight based on the total amount of the cosmetic composition.

If it is less than 0.1% by weight, it is difficult to achieve the desired effect of the present invention, and if it exceeds 5.0% by weight, it gives a sticky feeling during use, which is not preferable.

Furthermore, 3-It-menthoxypropane-1,2-diol in the cosmetic of the present invention is a compound represented by the general formula (U), and its preferred amount is 0% in the total amount of the cosmetic.
．． 001-3.0% by weight, more preferably 0.01-1
．． It is 0% by weight. If it is less than 0.001% by weight, it will be difficult to achieve the desired effect of the present invention (if it exceeds 3.0% by weight, it will cause irritation to the skin (feeling of swelling), which is not preferable.

The cosmetic of the present invention contains two components represented by the above general formulas (1) and (■), and the cosmetic to which these two components are added may be a cosmetic that is desired to have a cooling effect that lasts. Cosmetics to which the present invention is applied include, but are not particularly limited to, various cosmetics such as softening lotion, astringent lotion, wiping lotion, calamine lotion, aftershave lotion, and transparent make-up lotion. Water, beauty serums, and various creams and emulsions such as pine surge cream, cleansing cream, skin cream, summer foundation cream, suntan cream, and milky lotion [In addition to the skin cosmetics in 1, shampoo, hair conditioner, and hair tonic. etc.! 1. Hair cosmetics can also be mentioned.

In addition to the above two ingredients, the cosmetic of the present invention also includes oils, surfactants, and other ingredients commonly used as cosmetic ingredients.
Moisturizer, UV absorber, alcohol, chelate, p
Ingredients normally used in cosmetics, such as H adjustment agents, preservatives, thickeners, pigments, and fragrances, can be appropriately blended within the range that does not impair the effects of the present invention.For example, the calamine lotion, makeup transparent lotion, etc. , summer foundation creams contain pigments (for example, yellow iron oxide, red iron oxide, titanium oxide, talc, kaolin, etc.).

〔Example〕

Next, the present invention will be explained with reference to Examples.

Example 1 A cream having the composition shown in Table 1 below was manufactured by the following manufacturing method.

(Production method) Magnesium sulfate, methylparaben, and glycerin are added to purified water and heated, and the aqueous phase is kept at 70°C.
Mix other lipophilic components, heat and dissolve, and remove this oil phase by 7
Then, the aqueous phase is added to the oil phase and emulsified using an emulsifying machine. The emulsion was cooled to a final temperature of 30° C. using a heat exchanger, and then filled to obtain the cream of the present invention (Invention Product 1). In addition, inventive product 2 and comparative products 1 and 2 were obtained in the same manner as inventive product 1 except that the ingredients and/or formulations were changed.

Skin Cooling Sensation Sustaining Effect Test Regarding the products 1 and 2 of the present invention and Comparative Products 1 and 2 obtained by the above manufacturing method, the skin cooling sensation lasting effect was investigated using the test method described below, and the following results were obtained.

Test method> (11 Practical test (panel test) 30 women aged 20 to 40 were used as subjects, and comparative product 1 and comparative product 2, comparative product 1 and inventive product 1, and comparative product 1 and inventive product 2 were tested.
Divided into 3 groups, 10 people in each group, each applied the cream to the left and right face, immediately, 3 minutes later, 1
After 0 minutes, the "cooling sensation lasting effect" was investigated.

<Results> The test results were as shown in Table 2 below. Furthermore, Table 2
shows the number of subjects who answered that each test cream had a cooling sensation/slightly cooling sensation regarding the "skin cooling sensation lasting effect".

Table 2 From the results shown in Table 2 above, products 1 and 2 of the present invention in which 3-1-menthoxypropane-1,2-diol was blended with the glycidyl ether represented by the general formula (1), It can be seen that the skin cooling sensation sustaining effect is significantly superior to Comparative Product 2 which is not blended.

Example 2 Weight % Oil phase components: Setanol 0.5 Squalane 2.0 Vaseline 1.0 Lanolin alcohol 0.5 Liquid paraffin 2.0 Stearic acid 1.0 Pot! (10) Monooleic acid ester 2.0 Glyceryl ether 1.0 3-j-menthoxypropane-1,2-diol 0.3 Water phase acid content: glycerin, O-propylene glycol 1.0 Triethanolamine 0.5 Methylparaben 0.3 Ethanol 4.0 Fragrance 0.1 Purified water Balance meter 100 mm The above oil phase components, each of which is the same as the components of Example 1, are mixed and dissolved by heating, and the oil phase portion is maintained at 70°C. The aqueous phase component is similarly heated and mixed at 70° C., and the oil phase is added to the aqueous phase component and emulsified using an emulsifying machine. After cooling the emulsion to a final temperature of 30° C. using a heat exchanger, the emulsion was filled to prepare a milky lotion (Product 3 of the present invention).

Example 3 Weight % Ethanol 30.0 Polyoxymethylene hydrogenated castor oil (60 [!, 0.) 3.0 Glyceryl ether" 1.03-
j! -menthoxypropane-1,2-diol” 0.1 dipropylene glycol 5.0 methylparaben
0.1 lactic acid
Appropriate amount of sodium lactate
Appropriate amount of fragrance 0.1 purified water Balance meter
100 00: Dissolve dipropylene glycol, lactic acid, and sodium lactate in the same purified water as the ingredients in Example 1 to make it weakly acidic (pH 5-6), and add methylparaben, fragrance, and polyoxyethylene hydrogenated castor oil. , glyceryl ether, and 3-2-menthoxypropane-1,2-diol dissolved in ethanol were gradually added with stirring to solubilize and filter to obtain a lotion (invention product 4).

Example 4 Weight % Bentonite 15.0 Kaolin 10.0 Zinc oxide
5.0 Polyoxymethylene hydrogenated castor oil (80E, O,) 5.0 Glyceryl ether 13.0 3-z-menthoxypropane-1,2-diol 2.0 Propylene glycol 5.0 Ethanol
8.0 Methylparaben
0.1 fragrance
0.1 Purified water balance meter 100 00: Add propylene glycol to the same purified water as the ingredients in Example 1, add Veegum to swell, then add zinc oxide and kaolin, then polyoxyethylene hydrogenated castor oil, Glyceryl ether, 3
-1-menthoxypropane-1,2-diol, fragrance,
Ethanol in which parabens were dissolved was added, and the mixture was stirred until it became a paste to prepare a paste wash-off type pack (invention product 5).

Inventive products 3 to 5 prepared in Examples 2 to 4 were all cosmetics with excellent skin cooling sensation and sustained hardening.

〔Effect of the invention〕

Since the cosmetics of the present invention have an excellent long-lasting skin cooling effect, they can be used as cosmetics for which such properties (effects) are desired, such as hot skin in summer, oily skin, and skin after shaving. It is highly useful as a cosmetic product.

Claims (4)

[Claims] (1) General formula (I): ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (I) Glyceryl ether represented by (R represents an alkyl group having 8 to 24 carbon atoms), and general formula (II) ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼(II) A cosmetic characterized by containing 3-l-menthoxypropane-1,2-diol represented by the following. (2) Glyceryl ether is a general formula (I) in which R is the following formula (III): ▲Mathematical formulas, chemical formulas, tables, etc.▼(III) (m is an integer from 4 to 10, n is an integer from 5 to 11 and m
The cosmetic according to claim 1, which is a glyceryl ether having a distribution in which +n=11 to 17 and m=7 and n=8 as peaks. (3) The cosmetic according to claim (1) or (2), wherein the content of glyceryl ether is 0.1 to 5.0% by weight. (4) The cosmetic according to claim 1 or 2, wherein the amount of 3-l-menthoxypropane-1,2-diol is 0.001 to 3.0% by weight. .