JPS6410483B2 - - Google Patents

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 glycoside 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 become 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 a good cosmetic composition that is not sticky and has 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. This is a cosmetic with excellent moisturizing effects and good usability, which is characterized by containing polyoxyalkylene alkyl glycoside ether in an amount of 1/10 or more (weight ratio) to alcohol. 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 its 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, and tetraglycerin, which contain three or more hydroxyl groups in the molecule, maltose, maltitol, sucrose, fructose, xylitol, sorbitol, maltotriose, threitol, erythritol, and starch Examples include decomposed sugar-reducing 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 blended is 5 to 40% by weight based on the total amount of the cosmetic, and the effects of the present invention are particularly remarkable in cosmetics containing 10 to 30% by weight. 5
If the amount is less than 40% 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 glycose as a starting material and then adding ethylene oxide and/or propylene oxide, and this polyoxyalkylene alkyl glycoside ether itself also has moisture retention properties. have Ethylene oxide and/or polyoxyalkylene alkyl glycoside ether used in the present invention
Alternatively, the average number of moles of propylene oxide added is preferably about 5 to 40 moles in total. Further, the alkyl group in the molecule includes methyl group, ethyl group, propyl group, etc., but methyl group is preferable. The blending amount of polyoxyalkylene alkyl glycoside ether is 1/1 in weight ratio to the amount of water-soluble polyhydric alcohol having two or more hydroxyl groups in the molecule.
Effective at 10 or more. If it is less than 1/10, there will be no effect or only a small amount if there is. In addition to the above-mentioned essential ingredients, the cosmetic of the present invention may contain other ingredients as necessary, such as fragrances, coloring agents, preservatives, and water-soluble polymers, within a range that does not contradict the purpose of the cosmetic of the present invention. , 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 (B) Dipropylene Glycol 10.0 Polyoxyethylene (hereinafter referred to as POE)
Methyl glucoside ether (EO10 mol) 5.0 Purified water 54.4 Potassium hydroxide 0.2 (Production method) After heating the oil phase part of A and the water phase part of B to 70℃ and completely dissolving them, add the oil phase part into the water phase part. Mix and emulsify using an emulsifier. The emulsion was cooled to a final temperature of 30°C using a heat exchanger to obtain cream. Example 2 Nutrient 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 (EO10 mol) 1.0 Purified water 58.4 Potassium hydroxide 0.2 (Production method) According to Example 1. Comparative example 1 Nutritional cream (A) Cetano 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) Implementation According to Example 1. Table 1 shows the usability evaluation results for Examples 1 and 2 and Comparative Example 1. From this result, it is clear that the combination of POE alkyl glucosiether suppresses the stickiness of water-soluble polyhydric alcohol.

[Table] Example 3 Cleansing cream (A) Setanol 2.0 Beeswax 1.0 Solid paraffin 1.0 Stearic acid 2.0 Vaseline 10.0 Liquid paraffin 35.0 POE (20) Sorbitan stearate 2.4 Glyceryl monostearate 2.6 Propyl paraben 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) According to Example 1. Example 4 Nutrient emulsion (A) Bees 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 Butylparben 0.1 Fragrance 0.3 (B) Dipropylene glycol 5.0 Sorbitol 10.0 POE Methyl glucoside ether (EO15 mol) 5.0 Carboxyvinyl 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 2.5 POE(10) behenyl ether 0.5 Ethylparaben 0.2 Butylparaben 0.2 (B) Diglycerin 3.0 Xylitol 5.0 Polyoxy Propylene (abbreviated as POP) POE
Methyl glucoside ether (PO5 mol, EO5
Mol) 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 (PO10 mol) 10 1,3 butylene glycol 10 (B) Ethanol 7 POE (60) hydrogenated castor oil 1 Fragrance 0.05 Methylparaben 0.1 (Production 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 (EO20 mol) 5.0 Dipropylene glycol 5.0 Carboxy vinyl polymer 0.2 (B) Ethanol 5.0 POE (60) hydrogenated castor oil 1.0 Fragrance Materials: 0.1 Methylparaben 0.2 (C) Potassium hydroxide 0.1 (Production method) After uniformly dissolving the aqueous phase of A and the alcohol phase of B at room temperature, add B to A and uniformly mix and solubilize. Then, potassium hydroxide (C) was added to obtain an aqueous essence. Comparative example 2 Nutrient emulsion (A) Bees 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 Carboxyvinyl polymer 0.2 Purified water 67.6 Potassium hydroxide 0.1 (Production method) Same as Example 1. Comparative Example 3 Soft lotion (A) Purified water 79.95 Glycerin 2 1,3-butylene glycol 10 (B) Ethanol 7 POE (60) Hydrogenated castor oil 1 Fragrance 0.05 Methylparaben 0.1 (Production method) Same as Example 6.

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Claims (1)

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