JPS61167608A - Cosmetic - Google Patents

Abstract

PURPOSE:To provide a cosmetic giving no sticky feeling to the skin and having excellent moisturizing effect, by compounding a water-soluble polyhydric alcohol together with a polyoxyalkylene alkyl glucoside ether. CONSTITUTION:The cosmetic contains (A) 5-40wt% water-soluble polyhydric alcohol having >=2 OH groups in the molecule and (B) a polyoxyalkylene alkyl glucoside ether at a ratio (B/A) of >=1/10. The stickiness caused by the water-soluble polyhydric alcohol can be eliminated by the addition of the polyoxyalkylene alkyl glucoside ether.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a cosmetic that solves the sticky feel caused by water-soluble polyhydric alcohol by incorporating polyoxyalkylene alkyl glucoside ether.

[Prior Art] Retention of moisture in the skin is an essential factor for keeping the skin healthy, and many cosmetics and pharmaceuticals aimed at moisturizing are commercially available. Research into substances involved in moisturizing has been actively conducted, and a number of moisturizing agents have been provided. In particular, water-soluble polyhydric alcohols are widely used in cosmetics, pharmaceuticals, etc. because of their excellent water retention and hygroscopic properties.

[Problems to be Solved by the Invention] However, although these water-soluble polyhydric alcohols have an excellent effect of keeping the skin healthy and normalizing rough skin, they have a very sticky feel when used, so they have a particularly poor feel when used. This has been a big problem in cosmetics, where products with good quality are desired.

In view of these circumstances, the present inventors have conducted intensive research to obtain cosmetics with excellent moisturizing effects that feel good when used, and have found that if polyoxyalkylene alkyl glycoside ether is blended into the above cosmetics, they will have excellent moisturizing effects. The present inventors have discovered that it is possible to obtain good cosmetics that are not sticky and have completed the present invention.

[Means for Solving the Problems] That is, the present invention provides cosmetics containing 5 to 40% by weight or more of a water-soluble polyhydric alcohol having two or more hydroxyl groups in the molecule. 1 for alcohol
This is a cosmetic with excellent moisturizing effect and good usability, characterized by containing polyoxyalkylene alkyl glycoside ether in an amount of /10 or more (weight ratio).

Such cosmetics include creams, milky lotions, lotions, and other forms of cosmetics.

The water-soluble polyhydric alcohol used in the present invention has two or more hydroxyl groups in the molecule, and examples of those containing two hydroxyl groups include dipropylene glycol, 1.3-butylene glycol, 1,4-butylene glycol, etc. ,
Polyglycerols such as glycerin, diglycerin, triglycerin, tetraglycerin, maltose, maltitol, sucrose, fructose, xylitol, sorbitol, maltotriose, threitol, erythritol, starch decomposed sugars that contain 31&1 or more hydroxyl groups in the molecule Examples include reduced alcohols, and one or more of these may be used.

The present invention shows more remarkable effects in cosmetics containing polyhydric alcohols having three or more hydroxyl groups in the molecule.

The amount of water-soluble polyhydric alcohol added is 5 to 4 in the total amount of cosmetics.
The effect of the present invention is particularly remarkable in cosmetics containing 10 to 30% by weight. If the amount is less than 5% by weight, no moisturizing effect can be obtained, and if the amount exceeds 40% by weight, stickiness cannot be suppressed.

The polyoxyalkylene alkyl glycoside ether used in the present invention can be obtained by, for example, synthesizing an alkyl glycoside using glucose as a starting material, and then adding ethylene oxide and/or propylene oxide, which itself also has moisture retention properties. have

The average number of moles of ethylene oxide and/or propylene oxide added to the polyoxyalkylene alkyl glucoside ether used in the present invention is preferably about 5 to 40 moles in total.

In addition, as the alkyl group in the molecule, methyl group, ethyl group,
Examples include propyl group, but methyl group is preferred.

The amount of polyoxyalkylene alkyl glucoside ether to be blended is effective at a weight ratio of 1/10 or more to the amount of water-soluble polyhydric alcohol having two or more hydroxyl groups in the molecule. If it is less than 1710, there is no effect or only a slight effect.

In addition to the above-mentioned essential ingredients, the cosmetic of the present invention may contain other ingredients such as perfumes, coloring agents, preservatives, water-soluble highly molecules, drugs,
Alcohol etc. can be added.

[Examples] The present invention will be described in detail below with reference to Examples and Comparative Examples. The present invention is not limited to these. The blending amount is in weight%.

Example 1 Nutritional cream (A) Setanol 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 (B3 dipropylene glycol 10.0 polyoxyethylene (
(hereinafter referred to as POE) Methyl glucoside ether (EO10%) 5.0 Purified water 54.4 Potassium hydroxide 0.2 (Production method) The oil phase of A and the water phase of B are heated to 70°C and completely dissolved. After that, the oil phase is mixed into the water phase and emulsified using an emulsifier. The emulsion was cooled to a final temperature of 30° C. using a heat exchanger to obtain cream.

Example 2 Nutritional Cream (A) Setanol 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 10.0 POE methyl glucoside ether (8010 mol) 1.0 Purified water 58.4 Potassium hydroxide 0.2 (Production method) Same as Example 1.

(Left below) Comparative Example 1 Nutritional Cream (A) Setanol 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 10.0 Purified water
59.4 Potassium hydroxide
0.2 (Production method) Same as Example 1.

(Left space below) Table 1 shows the usability evaluation results based on the experimental results and Comparative Example 1. From these results, it is clear that the combination of POE alkyl glucosyether suppresses the stickiness of water-soluble polyhydric alcohol. it is obvious.

(Judgment) A: Not sticky B: Slightly sticky, but within a range that poses no problem in terms of usability.

C: Sticky D: Significantly sticky <Example 3 Cleansing cream (A) Cetanol 2.0 Piece wax 1.0 Solid paraffin 1.0 Stearic acid
2.0 Vaseline
10.0 Liquid paraffin 35.0P
OE (20) Sorbitan Stearate 2.4 Glyceryl Monostearate 2.6 Probylparaben 0.3 Fragrance
0.3(B) 1.3 Butylene glycol 5.0 Maltitol
5.0 POE methyl glucoside ether (EO20 mol) 5.0 Purified water 28.32 Potassium hydroxide 0.08 (Production method) Example 1
In accordance with

Example 4 Nutritional emulsion (A) Peace wax 1.0 Vaseline 2.0 Deodorized lanolin 1.5 Jojoba oil
6.0 Cetyl isooctanoate
4.0 POE (60) Hydrogenated castor oil 2.0
Ethylparaben 0.2 Butylparaben 0.1 Fragrance
0.3 (B) Dipropylene glycol 5.0 Sorbitol
10.0 POE methyl glucoside ether (EO 15 mol) 5.0 Carboxymethyl polymer 0.2 Purified water
62.6 Potassium hydroxide
0.1 (Production method) Same as Example 1.

Example 5 Foundation (A) Setanol 3.5 Stearic acid 2.0 Deodorized lanolin 5.0 Vaseline
2.0 squalane
8.0 Glyceryl Monoisostearate 2.5PO
E(10) Hehenyl ether 0.5 Ethylparaben 0.2 Butylparaben
0.2(B) Diglycerin
3.0 Xylitol 5
．． 0 Polyoxypropylene (abbreviated as POP) POE methyl glucoside ether (5 moles of PO, 5 moles of EO) 2.0 Mixed powder 15.0 Purified water
50.85 Potassium hydroxide
0.25 (Production method) Same as Example 1.

Example 6 Soft lotion (A) Purified water 69.95
Glycerin 2 POE methyl glucoside ether (Polo mol) 10 1.3 Butylene glycol 10 (B) Ethanol 7 POE (60) Hydrogenated castor oil 1 Fragrance
0.05 Methylparaben 0.1
(Manufacturing method) After uniformly dissolving the aqueous phase part of A and the alcohol phase part of B at room temperature, B was added to A and mixed uniformly to obtain a lotion.

Example 7 Aqueous essence (A) Purified water 53.4 Glycerin 20.0 1.3 Butylene glycol 10.0 POE methyl glucoside ether (EO 20 mol) 5.0 Dipropylene glycol 5.0 Carboxymethyl polymer 0.2 (B) Ethanol
5.0 POE (60) Hydrogenated Castor Oil i.

Fragrance 0.1 Methylparaben 0.2 (C) Potassium hydroxide 0.1 (Production method) After uniformly dissolving the aqueous phase part of A and the alcohol phase part of B at room temperature, add B to A and mix uniformly, Solubilize.

Then, potassium hydroxide (C) was added to obtain an aqueous essence.

Comparative Example 2 Nutritional emulsion (A) Peace wax 1.0 Vaseline 2.0 Odor lanolin 1.5 Jojoba oil
6.0 Cetyl isooctanoate 4.0 POE (60) Hydrogenated castor oil 2.0 Ethylparaben 0.2 Butylparahen
0.1 fragrance
0.3(B) Dipropylene glycol
5.0 Sorbitol 10.
0 Carboxymethyl polymer 0.2 Purified water
67゜6 potassium hydroxide
0.1 (M method) Same as Example 1.

Comparative Example 3 Soft lotion (A) Oval Ice 79.95
Glycerin 2 1.3 Butylene glycol 10 (B) Ethanol 7 POE (60) Hydrogenated castor oil 1 Fragrance
0.05 Methylparaben 0.1 (
Manufacturing method) According to Example 6.

(Margins below) Table 2 (Margins below) (Judgment) A: Not sticky B: Slightly sticky, but within a range that poses no problem in terms of usability.

C: Sticky D: Significantly sticky

Claims (1)

[Claims] In cosmetics containing 5 to 40% by weight of a water-soluble polyhydric alcohol having two or more hydroxyl groups in the molecule, polyoxy in an amount of 1/10 or more (weight ratio) to the water-soluble polyhydric alcohol. A cosmetic characterized by containing alkylene alkyl glucoside ether.