Cosmetic base and cosmetic

Abstract

The present invention provides: (i) a cosmetic base comprising a polyether polyol represented by formula (1): HO-\{(GL)a / (CH2CH2O)b / (CH2CH2CH2O)c\}-H (the definition of the symbols in the formula is as described in the specification), and a cosmetic containing the cosmetic base; (ii) a skin cosmetic containing the polyether polyol; and (iii) an emulsion cosmetic containing the polyether polyol.

Description

Cosmetic bases and cosmetics

[0001] The present invention relates to (i) a cosmetic base comprising a polyether polyol and a cosmetic comprising said cosmetic base, (ii) a skin cosmetic, and (iii) an emulsion cosmetic. Note that, hereinafter, the invention relating to the cosmetic base comprising a polyether polyol and the cosmetic comprising said cosmetic base may be referred to as the "first invention," the invention relating to the skin cosmetic as the "second invention," and the invention relating to the emulsion cosmetic as the "third invention."

[0002] Skin care cosmetics such as lotions, emulsions, and creams used for moisturizing and skin care often contain polyhydric alcohols such as glycerin and water-soluble polymers such as hyaluronic acid in order to enhance moisturizing effects. However, when polyhydric alcohols and water-soluble polymers are incorporated into cosmetics in large amounts, they can lead to a deterioration in the feeling of use, such as stickiness and poor skin compatibility. In this regard, it has been disclosed that the use of specific polyether polyols in external skin preparations or cosmetics can improve moisturizing power, feeling of use, and skin compatibility (Patent Documents 1 to 3).

[0003] Furthermore, by imparting a gloss to the skin immediately after use, the effect can be felt immediately after application, and the user's satisfaction can be enhanced. One known method for imparting gloss is to incorporate a silicone oil such as methylphenylpolysiloxane (Patent Document 4).

[0004] Furthermore, emulsion cosmetics have two fundamental properties: the property of providing moisture to the skin and the property of preventing moisture evaporation from the skin. Polyhydric alcohols such as glycerin are blended to enhance these properties of emulsion cosmetics, but blending a large amount of polyhydric alcohol into an emulsion cosmetic can make it more likely to feel sticky after application. In this regard, Patent Document 5 describes that an oil-in-water topical skin composition containing a specific alkylene oxide derivative is non-sticky.

[0005] Furthermore, blending an oil such as petrolatum into an emulsion cosmetic can enhance its adhesion to the skin. For example, Patent Document 6 describes that an emulsion composition containing a sufficient amount of petrolatum has an excellent feel when used and has long-lasting, good moisturizing properties.

[0006] Furthermore, since emulsions and creams are often used after applying lotion or after bathing, it is important that they blend well with wet skin. However, because the skin surface is hydrophobic, moisture does not blend well with the skin, and there is a problem that even if an emulsion cosmetic is applied with moisture remaining on the skin, it does not penetrate well. To improve the compatibility with wet skin, a common method is to incorporate a surfactant or a large amount of oily ingredients into the emulsion cosmetic. For example, Patent Document 7 describes that an oil-in-water skin cosmetic containing a hydrocarbon oil and isostearic acid has excellent compatibility with wet skin.

[0007] JP 2004-83541 A JP 2020-105123 A JP 2016-204278 A JP 2017-81881 A JP 2005-139094 A International Publication No. 2009 / 014061 JP 2011-136963 A

[0008] In cosmetics (e.g., cleansing oils, oily creams, etc.) containing oils and other oily agents as their main ingredients, there is a growing demand for the incorporation of an amphiphilic polyether polyol that has high compatibility with both water and oils, in order to improve moisturizing power and provide an excellent feel when used. However, no amphiphilic polyether polyol has been disclosed that has high compatibility with both water and hydrocarbon oils in addition to excellent moisturizing power and feel when used.

[0009] In recent years, there has been a growing need for skin care cosmetics that not only have a good feel when used and a moisturizing effect, but also have a shine-suppressing effect. By incorporating powders with sebum-adsorbing properties, such as silica, into cosmetics, shine suppression can be expected. However, the use of such powders can sometimes result in insufficient moisturizing power of the cosmetics, or the unique feel of the powder can sometimes worsen the feel of the cosmetics when used. Patent Document 2 also discloses a skin cosmetic that has a shine-suppressing effect by using a specific polyether polyol and proteoglycan. However, while such skin cosmetic products have an excellent shine-suppressing effect immediately after application, the durability of the shine-suppressing effect is insufficient.

[0010] The first invention has been made in view of the above-mentioned circumstances, and its object is to provide a cosmetic base that has excellent compatibility with water and oils, and a cosmetic that has excellent moisturizing effect, is non-sticky, and has an excellent, long-lasting shine-suppressing effect.

[0011] Second Invention Skin care cosmetics that spread smoothly over the skin and provide a smooth feeling during application and excellent elasticity after application are preferred. In this regard, the topical skin preparation of Patent Document 1 and the cosmetic of Patent Document 3 leave room for improvement in terms of the smooth feeling during application or the elasticity after application.

[0012] Furthermore, when silicone oil is blended into an aqueous cosmetic as described in Patent Document 4, it is necessary to add a large amount of surfactant, which poses a problem of impairing the smooth feeling of the aqueous cosmetic during application, and it is not possible to sufficiently achieve both gloss and a good feel during use.

[0013] The second invention has been made in view of the above-mentioned circumstances, and its object is to provide a skin cosmetic that is excellent in compatibility with the skin, smooth feeling during application, elastic feeling after application, gloss-imparting effect, and moisturizing effect.

[0014] Third Invention In summer, when exercising, or when wearing a mask, skin tends to become shiny even after wiping away sweat and sebum, so there is a growing need for a long-lasting shine-suppressing effect. However, the topical skin preparation described in Patent Document 5 was insufficient in terms of the long-lasting shine-suppressing effect. In addition, the emulsion composition described in Patent Document 6 had problems such as thickening during application, making it difficult to spread evenly, and leaving a strong sticky feeling after drying. In addition, the oil-in-water skin cosmetic described in Patent Document 7 had room for improvement in terms of adhesion to the skin.

[0015] The third invention was made in consideration of the above-mentioned circumstances, and its object is to provide an emulsion cosmetic that is excellent in compatibility with wet skin, inhibits thickening, provides a feeling of adhesion, is non-sticky, and has a long-lasting effect of inhibiting shine.

[0016] As a result of extensive research, the present inventors have found that a cosmetic base comprising a specific polyether polyol and a cosmetic containing the cosmetic base can achieve the object of the first invention.

[0017] Furthermore, as a result of extensive research, the present inventors have found that a skin cosmetic containing a specific polyether polyol can achieve the second object of the invention.

[0018] Furthermore, as a result of extensive research, the present inventors have found that an emulsion cosmetic containing a specific polyether polyol can achieve the third object of the present invention. Based on the above findings, the present invention is as follows.

[0019] [1] Formula (1): HO-{(GL) ａ / (CH ２ CH ２ O) ｂ / (CH ２ CH ２ CH ２ O) ｃ}-H (1) [wherein GL is a glycerin residue, a, b, and c are GL, CH ２ CH ２ O, and CH ２ CH ２ CH ２a is an average degree of polymerization of 0, a is a number from 0 to 30, b is a number from 0 to 80, c is a number from 1 to 70, a+b is a number from 1 to 90, (a+b) / c is a number from 0.2 to 8, and when a is 0, b / c is a number from 1 to 8.] [2] A cosmetic base comprising a polyether polyol represented by the formula [1] above, in an amount of 0.1 to 30% by mass relative to the total cosmetic.

[0020] [3] A skin cosmetic comprising the following components (a2) to (d2): (a2) the cosmetic base according to [1] above, (b2) a polyhydric alcohol having 3 to 9 carbon atoms, (c2) a thickener, and (d2) water, wherein the content of component (a2) is 0.1 to 10% by mass, the content of component (b2) is 1 to 30% by mass, and the content of component (c2) is 0.01 to 10% by mass, based on the total mass of the skin cosmetic.

[0021] [4] An emulsion cosmetic comprising the following components (a3) ​​to (d3): (a3) ​​the cosmetic base described in [1] above, (b3) an oil, (c3) a nonionic surfactant, and (d3) water, wherein the content of component (a3) ​​is 0.1 to 30% by mass, the content of component (b3) is 1 to 50% by mass, the content of component (c3) is 0.1 to 10% by mass, and the content of component (d3) is 15 to 98% by mass, relative to the total amount of the emulsion cosmetic. [5] The emulsion cosmetic according to [4] above, further comprising the following component (e3): (e3) a thickener.

[0022] According to the first aspect of the present invention, a cosmetic base having excellent compatibility with water and oils can be obtained. Cosmetics containing the cosmetic base have excellent moisturizing effect, no stickiness, and long-lasting oil-reducing effect.

[0023] According to the second invention, a skin cosmetic can be obtained that is excellent in compatibility with the skin, smooth feeling during application, elastic feeling after application, gloss-imparting effect, and moisturizing effect.

[0024] According to the third invention, an emulsified cosmetic can be obtained that is excellent in compatibility with wet skin, inhibits thickening, adheres to skin, is non-sticky, and has a long-lasting oil-suppressing effect.

[0025] In this specification, any numerical range defined using "to" is intended to include both the upper and lower limits of the range. For example, "2 to 5" means 2 or more and 5 or less.

[0026] <Cosmetic base (polyether polyol of the present invention)> The cosmetic base of the first invention is a polyether polyol of the formula (1): HO-{(GL) ａ / (CH ２ CH ２ O) ｂ / (CH ２ CH ２ CH ２ O) ｃ}-H (1) (sometimes referred to herein as "the polyether polyol of the present invention"). In the second invention, the cosmetic base of the first invention (i.e., the polyether polyol of the present invention) is used as component (a2), and in the third invention, the cosmetic base of the first invention (i.e., the polyether polyol of the present invention) is used as component (a3).

[0027] The polyether polyol of the present invention may be used alone or in combination of two or more. The definitions of the symbols in formula (1) will be explained below in order.

[0028] In formula (1), GL is a glycerin residue. Here, the "glycerin residue" refers to a group represented by formula (2) or formula (3):

[0029]

[0030] It means a group represented by the formula (2). The glycerin residue may be a group formed from a compound other than glycerin, as long as it is a group having a structure represented by formula (2) or formula (3). Hereinafter, "a group represented by formula (2)" and "a group represented by formula (3)" may be abbreviated as "group (2)" and "group (3)," respectively. In group (2), the hydroxy groups at the 1st and 3rd positions of glycerin are used for bonding, and in group (3), the hydroxy groups at the 1st and 2nd positions of glycerin are used for bonding.

[0031] When GL (glycerin residue) is present in the polyether polyol of the present invention, both group (2) and group (3) may be present. When GL (glycerin residue) is present in the polyether polyol of the present invention, both group (2) and group (3) are preferably present.

[0032] When GL (glycerin residue) is present in the polyether polyol of the present invention, (i) in the first invention, from the viewpoint of suppressing stickiness and prolonging the duration of the anti-gloss effect in the cosmetic, (ii) in the second invention, from the viewpoint of the gloss-imparting effect, and (iii) in the third invention, from the viewpoint of the absence of stickiness in the cosmetic, the molar ratio of group (2) / group (3) is preferably 40 / 60 to 99 / 1, more preferably 40 / 60 to 90 / 10, and even more preferably 50 / 50 to 80 / 20. The molar ratio of group (2) / group (3) is １３ Specifically, the molar ratio of group (2) / group (3) can be calculated by comparing the integral value of the signal of the methine carbon of group (2) (near 71 ppm) with the integral value of the signal of the methine carbon of group (3) (near 79 ppm).

[0033] In formula (1), CH ２ CH ２ O is an ethylene glycol residue. Here, the term "ethylene glycol residue" refers to ethylene glycol (HO-CH ２ CH ２ It refers to a group having a structure obtained by removing one hydroxy group (HO-) from a hydroxy group (-OH) and removing a hydrogen atom (H) from another hydroxy group (-OH).

[0034] In formula (1), CH ２ CH ２ CH ２ O is a 1,3-propanediol residue. Here, the term "1,3-propanediol residue" refers to 1,3-propanediol (HO-CH ２ CH ２ CH ２ It refers to a group having a structure obtained by removing one hydroxy group (HO-) from a hydroxy group (-OH) and removing a hydrogen atom (H) from another hydroxy group (-OH).

[0035] The slash " / " in formula (1) represents GL, CH ２ CH ２ O, and CH ２ CH ２ CH ２ There is no restriction on the order of GL, CH, and O, that is, they can be present in any order. ２ CH ２ O, and CH ２ CH ２ CH ２ O may be randomly bonded to each other, (ii) GL, CH ２ CH ２ O, and CH ２ CH ２ CH ２ (iii) any one or more of GL, CH ２ CH ２ O, and CH ２ CH ２ CH ２ O may be bonded in a manner including both of the above (i) and (ii). For example, multiple CH ２ CH ２ O forms a block, and this block, GL, and CH ２ CH ２ CH ２ O may be bonded randomly. Three or more CH ２ CH ２ When O is present, (CH ２ CH ２ O) ３ It is preferable that a block of the formula (I) is formed.

[0036] In formula (1), a, b, and c are GL, CH ２ CH ２ O, and CH ２ CH ２ CH ２ The average degree of polymerization of O is 0. Therefore, these may all be decimal numbers.

[0037] (i) In the first invention, from the viewpoint of compatibility with oils and fats, suppression of stickiness, and durability of the anti-gloss effect; (ii) in the second invention, from the viewpoint of compatibility with skin and a smooth feeling; and (iii) in the third invention, from the viewpoint of compatibility with wet skin, non-stickiness, and durability of the anti-thickening and anti-gloss effect, a is a number from 0 to 30, preferably a number from 0 to 15, and more preferably a number from 0 to 10. Here, "a is 0" means that GL is absent. (i) In the first invention, when b is 0, a is preferably a number from 2 to 10, more preferably a number from 3 to 10, from the viewpoint of compatibility with oils and fats and suppression of stickiness. (ii) In the second invention, when b is 0, a is preferably a number from 2 to 15, more preferably a number from 3 to 10. (iii) In the third invention, when b is 0, a is preferably a number from 2 to 10, more preferably a number from 3 to 10, from the viewpoint of non-stickiness.

[0038] (i) In the first invention, from the viewpoint of compatibility with oils and fats, moisturizing effect, and durability of the oil-staining effect, (ii) in the second invention, from the viewpoint of smooth feeling, and (iii) in the third invention, from the viewpoint of compatibility with wet skin, non-stickiness, and durability of the thickening-suppressing and oil-staining effects, b is a number from 0 to 80, preferably a number from 0 to 50, and more preferably a number from 0 to 30. Here, "b is 0" means that CH ２ CH ２ This means that O is not present. When a is 0, (i) in the first invention, from the viewpoint of the durability of the oil-reducing effect, (ii) in the second invention, from the viewpoint of the smooth feeling, and (iii) in the third invention, from the viewpoint of the absence of stickiness and the durability of the oil-reducing effect, b is preferably a number from 4 to 30, more preferably a number from 5 to 20.

[0039] (i) In the first invention, from the viewpoint of anti-stickiness and durability of the anti-gloss effect, (ii) in the second invention, from the viewpoint of smooth feeling, and (iii) in the third invention, from the viewpoint of absence of stickiness and durability of the anti-thickening and anti-gloss effect, a+b is a number from 1 to 90, preferably a number from 2 to 70, more preferably a number from 3 to 60, even more preferably a number from 3 to 30, and particularly preferably a number from 3 to 15.

[0040] (i) In the first invention, from the viewpoint of compatibility with water and moisturizing effect, (ii) in the second invention, from the viewpoint of elasticity, and (iii) in the third invention, from the viewpoint of adhesion, c is a number from 1 to 70, preferably a number from 2 to 40, more preferably a number from 4 to 30, even more preferably a number from 4 to 20, and particularly preferably a number from 4 to 15.

[0041] (i) In the first invention, from the viewpoints of compatibility with water, compatibility with oils and fats, stickiness suppression, and durability of the shine-suppressing effect; (ii) in the second invention, from the viewpoints of smooth feeling and shine-imparting effect; and (iii) in the third invention, from the viewpoints of compatibility with wet skin, adhesion, non-stickiness, and durability of the shine-suppressing effect, (a+b) / c is a number from 0.2 to 8, preferably a number from 0.25 to 5, and more preferably a number from 0.3 to 4.

[0042] When a is 0, (i) in the first invention, from the viewpoint of compatibility with water, suppression of stickiness, and durability of the anti-shine effect, (ii) in the second invention, from the viewpoint of smooth feeling and shine-imparting effect, and (iii) in the third invention, from the viewpoint of absence of stickiness and durability of the anti-shine effect, b / c is a number from 1 to 8, preferably a number from 1.2 to 5, and more preferably a number from 1.25 to 4.

[0043] (i) In the first invention, from the viewpoint of suppressing stickiness; (ii) in the second invention, from the viewpoint of smooth feeling; and (iii) in the third invention, from the viewpoint of adhesion, absence of stickiness, and suppression of thickening, the weight-average molecular weight (Mw) of the polyether polyol of the present invention calculated from a chromatogram obtained by gel permeation chromatography measurement is preferably 300 to 10,000, more preferably 500 to 8,000, even more preferably 500 to 5,000, and particularly preferably 500 to 2,500.

[0044] The polyether polyol of the present invention can be produced by a known method. For example, the polyether polyol of the present invention can be produced by dehydration condensation of a polyhydric alcohol in the presence of an acid catalyst such as sulfuric acid at 80°C to 130°C under normal pressure. After the dehydration condensation, it is preferable to neutralize the remaining acid catalyst with a base such as potassium hydroxide and remove the resulting salt.

[0045] <Cosmetics> The first invention also provides a cosmetic comprising the cosmetic base of the first invention (i.e., the polyether polyol of the present invention) in an amount of 0.1 to 30% by mass based on the total amount of the cosmetic. The cosmetic base of the first invention may be used alone or in combination of two or more types.

[0046] The cosmetic base of the first invention (i.e., the polyether polyol of the present invention) functions in cosmetics as a feel improver, moisturizer, emulsifier, etc. By using the cosmetic base of the first invention, cosmetics having excellent moisturizing effect, non-stickiness, and long-lasting oil-suppressing effect can be obtained.

[0047] The cosmetic of the first invention is not particularly limited and may be any of aqueous cosmetics, water-in-oil or oil-in-water emulsion cosmetics, and oil-based cosmetics. Examples of cosmetics include skin care cosmetics such as lotions, serums, emulsions, creams, packs, and sunscreen creams; body cosmetics; makeup removers such as cleansing oils and cleansing waters; skin cosmetics such as body soaps, hand soaps, and facial cleansing pastes; hair cosmetics such as shampoos, treatments, hair liquids, hair oils, hair tonics, and hair growth agents; and makeup cosmetics such as makeup bases, liquid foundations, and BB creams.

[0048] The content of the cosmetic base of the first invention (i.e., the polyether polyol of the present invention) is 0.1 to 30% by mass, preferably 0.5 to 15% by mass, based on the total amount of the cosmetic of the first invention, from the viewpoint of suppressing stickiness.

[0049] The cosmetic of the first invention preferably contains water (more preferably purified water). Furthermore, the cosmetic of the first invention may contain other components other than the cosmetic base of the first invention (i.e., the polyether polyol of the present invention) and water, as needed, as long as the effects of the first invention are not impaired. There are no particular limitations on the other components, as long as they are components commonly used in cosmetics. Examples of other components include humectants, hydrocarbons, higher alcohols, higher fatty acids and their triglycerides, ester oils, animal and vegetable oils, silicones, vitamins, UV absorbers, water-soluble polymers, antioxidants, cationic surfactants, anionic surfactants, amphoteric surfactants, nonionic surfactants, sequestering agents, ethanol, thickeners, preservatives, colorings, pigments, and fragrances. The other components may be used alone or in combination.

[0050] When the cosmetic of the first invention is a lotion and other ingredients are used, the total amount of the other ingredients is preferably 0.1 to 80% by mass, more preferably 0.5 to 40% by mass, based on the total amount of the lotion of the first invention, from the viewpoints of moisturizing effect, freshness, and feel in use (e.g., a refreshing feeling). Water is the remainder of the lotion of the first invention (i.e., the remainder of the lotion other than the cosmetic base of the first invention (i.e., the polyether polyol of the present invention) and other ingredients).

[0051] When the cosmetic of the first invention is a cream, liquid foundation, or sunscreen cream and other ingredients are used, the total amount of the other ingredients is, from the viewpoint of emollient effect and moisture evaporation inhibitory effect, preferably 5 to 99% by mass, and more preferably 10 to 85% by mass, based on the total amount of the cream, liquid foundation, or sunscreen cream of the first invention. Note that water is the remainder of the cream, liquid foundation, or sunscreen cream of the first invention (i.e., the remainder of the cream, liquid foundation, or sunscreen cream other than the cosmetic base of the first invention (i.e., the polyether polyol of the present invention) and other ingredients).

[0052] When the cosmetic of the first invention is a shampoo or body soap and other ingredients are used, the total amount of the other ingredients is, from the viewpoint of cleansing performance, preferably 5 to 80% by mass, more preferably 10 to 60% by mass, based on the total amount of the shampoo or body soap of the first invention. Note that water is the remainder of the shampoo or body soap of the first invention (i.e., the remainder of the shampoo or body soap other than the cosmetic base of the first invention (i.e., the polyether polyol of the present invention) and other ingredients).

[0053] When the cosmetic of the first invention is a treatment and other ingredients are used, the total amount of the other ingredients is preferably 10 to 90% by mass, more preferably 15 to 80% by mass, based on the entire treatment of the first invention, from the viewpoint of emollient effect and moisture evaporation inhibitory effect. Water is the remainder of the treatment of the first invention (i.e., the remainder of the treatment other than the cosmetic base of the first invention (i.e., the polyether polyol of the present invention) and other ingredients).

[0054] When the cosmetic composition of the first invention is a cream and other ingredients are used, the total amount of the other ingredients is preferably 5 to 99% by mass, more preferably 10 to 85% by mass, based on the total amount of the cream of the first invention, from the viewpoints of the emollient effect and the moisture evaporation inhibitory effect.

[0055] When the cosmetic of the first invention is a cleansing oil and other ingredients are used, the total amount of the other ingredients is preferably 40 to 99.5% by mass, more preferably 60 to 99.0% by mass, based on the total amount of the cleansing oil of the first invention, from the viewpoint of cleansing performance.

[0056] When the cosmetic of the first invention is a cleansing water and other ingredients are used, the total amount of the other ingredients is, from the viewpoint of cleansing performance, preferably 2 to 80% by mass, more preferably 5 to 60% by mass, based on the total amount of the cleansing water of the first invention. Note that water is the remainder of the cleansing water of the first invention (i.e., the remainder of the cleansing water other than the cosmetic base of the first invention (i.e., the polyether polyol of the present invention) and other ingredients).

[0057] When the cosmetic of the first invention is a facial cleansing paste and other ingredients are used, the total amount of the other ingredients is, from the viewpoint of cleansing performance, preferably 15 to 95% by mass, more preferably 30 to 85% by mass, based on the entire facial cleansing paste of the first invention. Note that water is the remainder of the facial cleansing paste of the first invention (i.e., the remainder of the facial cleansing paste other than the cosmetic base of the first invention (i.e., the polyether polyol of the present invention) and other ingredients).

[0058] <Skin Cosmetic> The skin cosmetic of the second invention contains the following components (a2) to (d2). Each component will be explained below.

[0059] [Component (a2)] The skin cosmetic of the second invention contains the polyether polyol of the present invention as component (a2). The polyether polyol of the present invention may be used alone or in combination of two or more types.

[0060] The content of component (a2) is 0.1 to 10% by mass, preferably 0.3 to 10% by mass, and more preferably 0.5 to 5% by mass, based on the total weight of the skin cosmetic. If the content is less than 0.1% by mass, the skin compatibility, smooth feeling, elasticity, gloss-imparting effect, or moisturizing effect may be impaired. If the content exceeds 10% by mass, the smooth feeling may not be obtained.

[0061] [Component (b2)] The skin cosmetic of the second invention contains, as component (b2), a polyhydric alcohol having 3 to 9 carbon atoms. The polyhydric alcohol having 3 to 9 carbon atoms may be used alone or in combination of two or more types.

[0062] From the viewpoint of a smooth feeling, the number of carbon atoms in the polyhydric alcohol is preferably 3 to 6. From the viewpoint of a smooth feeling, the number of hydroxy groups in the polyhydric alcohol is preferably 2 to 6, and more preferably 2 to 4.

[0063] Examples of polyhydric alcohols having 3 to 9 carbon atoms include propylene glycol (also known as 1,2-propanediol), 1,3-propanediol, dipropylene glycol (also known as 4-oxa-2,6-heptanediol), 1,3-butylene glycol (also known as 1,3-butanediol), pentylene glycol (also known as 1,2-pentanediol), isoprene glycol (also known as 3-methyl-1,3-butanediol), 1,2-hexanediol, 1,6-hexanediol, glycerin, diglycerin, polyglycerin-3, erythritol, threitol, arabitol, xylitol, ribitol, iditol, galactitol, sorbitol, and mannitol.

[0064] Component (b2) is preferably at least one selected from the group consisting of glycerin, diglycerin, polyglycerin-3, propylene glycol, 1,3-propanediol, dipropylene glycol, 1,3-butylene glycol, pentylene glycol, and 1,2-hexanediol, and more preferably glycerin.

[0065] The content of component (b2) is 1 to 30% by mass, preferably 5 to 20% by mass, based on the total weight of the skin cosmetic. If the content is less than 1% by mass, the elasticity, gloss-imparting effect, or moisturizing effect may be impaired. If the content is more than 30% by mass, the skin compatibility, smoothness, or gloss-imparting effect may be impaired.

[0066] [Component (c2)] The skin cosmetic of the second invention contains a thickener as component (c2). The thickener may be used alone or in combination of two or more types.

[0067] The viscosity of the aqueous thickener solution at a temperature of 25°C, a pH of 6, and a concentration of 1% by mass (hereinafter referred to as "viscosity (25°C, pH: 6, 1% by mass)") is preferably 500 to 1,200,000 mPa·s, more preferably 500 to 250,000 mPa·s, and even more preferably 1,000 to 200,000 mPa·s, from the viewpoints of smoothness, elasticity, and gloss-imparting effects. In measuring the viscosity of the aqueous thickener solution (25°C, pH: 6, 1% by mass), if the pH of the aqueous thickener solution at a concentration of 1% by mass is higher than 6, the pH is adjusted to 6 using citric acid, and if the pH of the aqueous thickener solution at a concentration of 1% by mass is lower than 6, the pH is adjusted to 6 using potassium hydroxide. The viscosity is an index showing the size of the thickener. The viscosity can be measured by a method using a single cylindrical rotational viscometer (B-type viscometer) described in the 18th Edition of the Japanese Pharmacopoeia.

[0068] Examples of thickeners include natural polysaccharides such as carrageenan, xanthan gum, dextrin, methylcellulose, chitosan, and hyaluronic acid Na (also known as sodium hyaluronate); semi-synthetic polysaccharides such as ethyl cellulose, hydroxyethyl cellulose, and hydroxypropyl cellulose; and synthetic polymers such as polyvinyl alcohol, polyacrylic acid, polymethacrylic acid, carboxyvinyl polymer (hereinafter referred to as "carbomer"), (acrylates / C10-30 alkyl acrylate) crosspolymer (INCI name: Acrylates / C10-30 Alkyl Acrylate Crosspolymer), (PEG-240 / Decyltetradeceth-20 / HDI) copolymer (INCI name: PEG-240 / HDI Copolymer Bis-Decyltetradeceth-20 Ether), and (hydroxyethyl acrylate / acryloyldimethyl taurate Na) copolymer (INCI name: Hydroxyethyl Acrylate / Sodium Acryloyldimethyl Taurate Copolymer). Here, "sodium hyaluronate," "(acrylates / C10-30 alkyl acrylate) crosspolymer," "(PEG-240 / decyltetradeceth-20 / HDI) copolymer," and "(hydroxyethyl acrylate / sodium acryloyldimethyltaurate) copolymer" are all cosmetic labeling names provided by the Japan Cosmetic Industry Association.

[0069] Component (c2) is preferably at least one selected from the group consisting of xanthan gum, sodium hyaluronate, hydroxyethyl cellulose, carbomer, (acrylates / C10-30 alkyl acrylate) crosspolymer, (PEG-240 / decyltetradeceth-20 / HDI) copolymer, and (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer, more preferably at least one selected from the group consisting of xanthan gum, carbomer, (acrylates / C10-30 alkyl acrylate) crosspolymer, (PEG-240 / decyltetradeceth-20 / HDI) copolymer, and (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer, and even more preferably at least one selected from the group consisting of xanthan gum and carbomer.

[0070] The content of component (c2) is 0.01 to 10% by mass, more preferably 0.01 to 5% by mass, and even more preferably 0.03 to 1% by mass, based on the total weight of the skin cosmetic. If the content is less than 0.01% by mass, the effects of imparting smoothness, elasticity, and shine may be impaired. If the content exceeds 10% by mass, the effects of imparting smoothness or shine may be impaired.

[0071] [Component (d2)] The skin cosmetic of the second invention contains water as component (d2). The content of component (d2) (water) is the remainder of the skin cosmetic other than components (a2) to (c2), and optionally component (e2) and other components.

[0072] [Component (e2)] The skin cosmetic of the second invention may contain a pH adjuster as component (e2) to adjust its pH within a desired range. The pH adjuster may be used alone or in combination of two or more.

[0073] There are no particular limitations on the pH adjuster as long as it is one that can be commonly used in cosmetics, and both basic substances and acidic substances can be used.

[0074] Examples of basic substances include sodium hydroxide, potassium hydroxide, lysine, arginine, sodium citrate, etc. The basic substance is preferably at least one selected from the group consisting of sodium hydroxide, potassium hydroxide, arginine, and sodium citrate, and more preferably at least one selected from the group consisting of sodium hydroxide, potassium hydroxide, arginine, and sodium citrate.

[0075] Examples of acidic substances include citric acid, succinic acid, phosphoric acid, glycolic acid, tartaric acid, lactic acid, aspartic acid, glutamic acid, carbonic acid, etc. The acidic substance is preferably at least one selected from the group consisting of citric acid, succinic acid, and phosphoric acid, and more preferably citric acid.

[0076] Component (e2) is preferably at least one selected from the group consisting of sodium hydroxide, potassium hydroxide, arginine, sodium citrate, citric acid, succinic acid, and phosphoric acid, and more preferably at least one selected from the group consisting of sodium hydroxide, potassium hydroxide, arginine, sodium citrate, and citric acid.

[0077] When component (e2) is used, the content of component (e2) is adjusted so that the pH of the skin cosmetic of the second invention falls within a desired range, preferably 4 to 8, more preferably 5 to 7.

[0078] [Other Components] The skin cosmetic of the second invention may contain other components different from components (a2) to (e2) as needed, as long as the effects of the second invention are not impaired. There are no particular limitations on the other components, as long as they are components commonly used in skin cosmetic preparations. Examples of other components include hydrocarbons, monohydric higher alcohols, polyhydric alcohols having 10 or more carbon atoms (e.g., ethylhexylglycerin, PEG-32), higher fatty acids and their triglycerides, ester oils, animal and vegetable oils and fats, vitamins, UV absorbers, antioxidants, cationic surfactants, anionic surfactants, amphoteric surfactants, nonionic surfactants, sequestering agents, ethanol, preservatives, coloring matter, pigments, and fragrances. Only one type of other component may be used, or two or more types may be used in combination.

[0079] When other components are used, the total amount of the other components is preferably 0.001 to 80% by mass, more preferably 0.1 to 40% by mass, based on the total amount of the skin cosmetic, from the viewpoints of smoothness, elasticity, gloss-imparting effect, and moisturizing effect.

[0080] <Emulsion Cosmetic> The emulsion cosmetic of the third invention contains components (a3) ​​to (d3) described below. Each component will be explained in turn below.

[0081] [Component (a3)] The emulsion cosmetic of the third invention contains the polyether polyol of the present invention as component (a3). The polyether polyol of the present invention may be used alone or in combination of two or more types.

[0082] The content of component (a3) ​​in the third invention is 0.1 to 30% by mass, preferably 0.2 to 10% by mass, and more preferably 0.5 to 5% by mass, based on the total weight of the emulsion cosmetic. If the content is less than 0.1% by mass, it may be difficult to obtain good compatibility with wet skin, adhesion, or a sustained oil-suppressing effect. If the content exceeds 30% by mass, it may be difficult to obtain the effects of suppressing thickening and preventing stickiness.

[0083] [Component (b3)] The emulsion cosmetic of the third invention contains an oil as component (b3). Only one oil may be used, or two or more oils may be used in combination. The oil is not particularly limited as long as it can be incorporated into ordinary cosmetics. The oil may be either a polar oil or a non-polar oil.

[0084] Examples of polar oils include triglycerides, ester oils, fatty acids, higher alcohols, etc. Examples of triglycerides include olive oil, camellia oil, castor oil, safflower oil, soybean oil, tea seed oil, cacao butter, coconut oil, sunflower oil, hardened coconut oil, palm oil, Japan wax oil, hardened castor oil, etc. Among these, olive oil, camellia oil, castor oil, safflower oil, and sunflower oil are preferred, and olive oil and camellia oil are more preferred.

[0085] Examples of ester oils include diisobutyl adipate, diisopropyl sebacate, isononyl isononanoate, cetyl ethylhexanoate, isopropyl myristate, cetyl octanoate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, ethyl oleate, etc. Among these, diisopropyl sebacate, isononyl isononanoate, cetyl ethylhexanoate, isopropyl myristate, isopropyl palmitate, and ethyl oleate are preferred, and diisopropyl sebacate, isononyl isononanoate, and cetyl ethylhexanoate are more preferred.

[0086] Examples of fatty acids include stearic acid, oleic acid, linoleic acid, isostearic acid, and palmitic acid.

[0087] Examples of higher alcohols include stearyl alcohol, isostearyl alcohol, oleyl alcohol, behenyl alcohol, cetyl alcohol, batyl alcohol, etc. Among these, stearyl alcohol, behenyl alcohol, and cetyl alcohol are preferred.

[0088] Examples of non-polar oils include hydrocarbon oils and silicone oils. Examples of hydrocarbon oils include squalane, liquid paraffin, liquid isoparaffin, petrolatum, dodecane, isododecane, tetradecane, hexadecane, and hydrogenated polyisobutene. Among these, squalane, petrolatum, dodecane, isododecane, and hydrogenated polyisobutene are preferred, and squalane, dodecane, and hydrogenated polyisobutene are more preferred.

[0089] Examples of silicone oils include dimethicone (also known as "dimethylpolysiloxane"), cyclic silicones (e.g., cyclopentasiloxane, cyclohexasiloxane), polymethylcyclosiloxane, polyether-modified methylpolysiloxane, amino-modified dimethylpolysiloxane, etc. Among these, dimethicone and cyclic silicones are preferred, and dimethicone and cyclopentasiloxane are more preferred.

[0090] In one embodiment of the third invention, component (b3) is preferably at least one selected from the group consisting of olive oil, camellia oil, cetyl ethylhexanoate, diisopropyl sebacate, isononyl isononanoate, squalane, dodecane, hydrogenated polyisobutene, dimethicone, and cyclopentasiloxane.

[0091] In one embodiment of the third invention, component (b3) is preferably a combination of a polar oil and a non-polar oil, more preferably a combination of at least one polar oil selected from the group consisting of triglycerides and ester oils and at least one non-polar oil selected from the group consisting of hydrocarbon oils and silicone oils, even more preferably a combination of at least one polar oil selected from the group consisting of triglycerides and ester oils and a hydrocarbon oil (non-polar oil), and particularly preferably a combination of a triglyceride (polar oil) and a hydrocarbon oil (non-polar oil).

[0092] In one embodiment of the third invention, component (b3) is preferably a combination of at least one polar oil selected from the group consisting of olive oil, camellia oil, cetyl ethylhexanoate, diisopropyl sebacate, and isononyl isononanoate with at least one nonpolar oil selected from the group consisting of squalane, dodecane, hydrogenated polyisobutene, dimethicone, and cyclopentasiloxane, more preferably a combination of at least one polar oil selected from the group consisting of olive oil, camellia oil, cetyl ethylhexanoate, diisopropyl sebacate, and isononyl isononanoate with at least one nonpolar oil selected from the group consisting of squalane, dodecane, and hydrogenated polyisobutene, and even more preferably a combination of at least one polar oil selected from the group consisting of olive oil and camellia oil with at least one nonpolar oil selected from the group consisting of squalane, dodecane, and hydrogenated polyisobutene.

[0093] When a combination of polar oil and non-polar oil is used as component (b3), the mass ratio of polar oil to non-polar oil (hereinafter sometimes abbreviated as "polar oil:non-polar oil") is preferably 10:1 to 1:1, more preferably 8:1 to 2:1, when the emulsion cosmetic of the third invention is an oil-in-water (o / w) emulsion. When the emulsion cosmetic of the third invention is a water-in-oil (w / o) emulsion, the mass ratio of polar oil to non-polar oil is preferably 1:1 to 1:25, more preferably 1:2 to 1:10.

[0094] The content of component (b3) is 1 to 50% by mass, preferably 1 to 45% by mass, more preferably 1 to 35% by mass, and particularly preferably 1 to 30% by mass, based on the total weight of the emulsion cosmetic. If the content is less than 1% by mass, the cosmetic may not blend well with wet skin, resulting in a decreased sense of adhesion. If the content is more than 50% by mass, the cosmetic may become less stable, thicken during application, and cause a sticky feeling.

[0095] When the emulsion cosmetic of the third invention is an oil-in-water (o / w) emulsion, the content of component (b3) is preferably 1 to 40% by mass, more preferably 1 to 30% by mass, and even more preferably 1 to 20% by mass, based on the total emulsion cosmetic.

[0096] When the emulsion cosmetic of the third invention is a water-in-oil (w / o) emulsion, the content of component (b3) is preferably 1 to 45% by mass, more preferably 5 to 35% by mass, and even more preferably 5 to 30% by mass, based on the total amount of the emulsion cosmetic.

[0097] [Component (c3)] The emulsion cosmetic of the third invention contains a nonionic surfactant as component (c3). The nonionic surfactant may be used alone or in combination of two or more types.

[0098] There are no particular restrictions on the nonionic surfactant as long as it can be incorporated into ordinary cosmetics, but nonionic surfactants with an HLB value of 2 to 18 are preferred. HLB value stands for Hydrophile-Lipophile Balance Value, and is a numerical representation of the balance between the hydrophilic and lipophilic groups of a surfactant. HLB values ​​are generally numbers between 0 and 20, with higher HLB values ​​indicating higher hydrophilicity of the surfactant.

[0099] The HLB value can be calculated by the following formula (α), the following formula (β), or the following formula (γ).

[0100] (HLB Value of Polyoxyethylene-Type Nonionic Surfactant) HLB value = (Amount of oxyethylene chain (% by mass) + Amount of polyhydric alcohol moiety (% by mass)) / 5 (α) The standard of the above amount is the entire surfactant for which the HLB value is calculated. Furthermore, the "polyhydric alcohol moiety" means the portion having a structure obtained by removing the hydroxy group used for bonding to the oxyethylene chain from the polyhydric alcohol.

[0101] (HLB value of polyhydric alcohol fatty acid ester type nonionic surfactant) HLB value = 20 × (1 - S / A) (β) (In formula (β), S is the saponification value (mg KOH / g) of the ester which is the surfactant, and A is the acid value (mg KOH / g) of the fatty acid which is the raw material of the surfactant.)

[0102] (HLB value of polyether-modified silicone nonionic surfactant) HLB value = 20 x (molecular weight of hydrophilic group / molecular weight of entire surfactant) (γ)

[0103] Examples of the nonionic surfactant of component (c3) include polyoxyethylene type nonionic surfactants, polyhydric alcohol fatty acid ester type nonionic surfactants, and polyether-modified silicone type nonionic surfactants.

[0104] Examples of polyoxyethylene type nonionic surfactants include polyoxyethylene alkyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, polyoxyethylene fatty acid esters, polyoxyethylene polyhydric alcohol fatty acid esters, and polyoxyethylene sorbitan fatty acid esters. Specific examples thereof include laureth-7 (HLB value: 11.0), steareth-20 (HLB value: 15.0), trideceth-12 (HLB value: 14.5), PPG-4 ceteth-20 (HLB value: 16.5), PPG-13 decyltetradeceth-24 (HLB value: 10.1), PEG-20 hydrogenated castor oil (HLB value: 10.0), PEG-10 glyceryl tristearate (HLB value: 5.0), PEG-10 glyceryl triisostearate (HLB value: 5.0), PEG-10 glyceryl trioleate (HLB value: 5.0), PEG-3 glyceryl isostearate (HLB value: 6.0), PEG-10 glyceryl diisostearate (HLB value: 6.0), and PEG-10 glyceryl diisostearate (HLB value: 6.0). LB value: 7.0), PEG-5 glyceryl isostearate (HLB value: 8.0), PEG-20 glyceryl triisostearate (HLB value: 8.0), PEG-30 glyceryl triisostearate (HLB value: 10.0), PEG-20 glyceryl isostearate (HLB value: 12.0), PEG-40 stearate (HLB value: 17.0), sorbeth-30 tetraisostearate (HLB value: 11.1), sorbeth-6 tetraoleate (HLB value: 5.0), polyoxyethylene sorbitan monostearate (HLB value: 15.0), polyoxyethylene sorbitan monooleate (HLB value: 15.0), and the like.

[0105] Examples of polyhydric alcohol fatty acid ester-type nonionic surfactants include polyglycerin fatty acid esters, glycerin fatty acid esters, sorbitan fatty acid esters, sucrose fatty acid esters, etc. Specific examples thereof include polyglyceryl-2 isostearate (HLB value: 5.0), polyglyceryl-2 oleate (HLB value: 5.5), polyglyceryl-4 isostearate (HLB value: 5.0), polyglyceryl-4 oleate (HLB value: 6.0), polyglyceryl-10 tristearate (HLB value: 7.5), polyglyceryl-10 trioleate (HLB value: 7.0), and polyglyceryl-10 diisostearate (HLB value: 10.0). , polyglyceryl-10 laurate (HLB value: 16.0), polyglyceryl-10 oleate (HLB value: 12), polyglyceryl-10 stearate (HLB value: 14.0), glyceryl monostearate (HLB value: 3.0), glyceryl monolaurate (HLB value: 5), glyceryl monooleate (HLB value: 5.0), sorbitan monostearate (HLB value: 4.5), sucrose stearate (HLB value: 11.0), and the like.

[0106] Examples of polyether-modified silicone nonionic surfactants include PEG-10 dimethicone (HLB value: 4.0) and PEG-9 polydimethylsiloxyethyl dimethicone (HLB value: 4.0).

[0107] In one embodiment of the third invention, component (c3) is preferably at least one selected from the group consisting of polyoxyethylene-type nonionic surfactants, polyhydric alcohol fatty acid ester-type nonionic surfactants, and polyether-modified silicone-type nonionic surfactants, more preferably at least one selected from the group consisting of PEG-40 stearate, polyoxyethylene sorbitan monostearate, polyglyceryl-10 laurate, polyglyceryl-10 oleate, glyceryl monostearate, glyceryl monolaurate, and PEG-10 dimethicone, and even more preferably at least one selected from the group consisting of polyglyceryl-10 laurate, polyglyceryl-10 oleate, glyceryl monostearate, and glyceryl monolaurate.

[0108] In one embodiment of the third invention, component (c3) is preferably a combination of a nonionic surfactant having an HLB value of less than 10 and a nonionic surfactant having an HLB value of at least 10. Emulsion cosmetics containing such a combination have excellent emulsion stability, and as a result, are excellent in compatibility with wet skin and lack of sticky feeling.

[0109] In one embodiment of the third invention, component (c3) is more preferably a combination of at least one nonionic surfactant having an HLB value of less than 10 selected from the group consisting of glyceryl monostearate, glyceryl monolaurate, and PEG-10 dimethicone, and at least one nonionic surfactant having an HLB value of 10 or more selected from the group consisting of PEG-40 stearate, polyoxyethylene sorbitan monostearate, polyglyceryl-10 laurate, and polyglyceryl-10 oleate, and even more preferably a combination of at least one nonionic surfactant having an HLB value of less than 10 selected from the group consisting of glyceryl monostearate and glyceryl monolaurate, and at least one nonionic surfactant having an HLB value of 10 or more selected from the group consisting of polyglyceryl-10 laurate and polyglyceryl-10 oleate.

[0110] When a combination of a nonionic surfactant having an HLB value of less than 10 and a nonionic surfactant having an HLB value of 10 or greater is used as component (c3), the mass ratio of the nonionic surfactant having an HLB value of less than 10 to the nonionic surfactant having an HLB value of 10 or greater (hereinafter sometimes abbreviated as "(HLB less than 10):(HLB of 10 or greater)") is preferably 1:15 to 2:1, more preferably 1:5 to 1:1, when the emulsion cosmetic of the third invention is an oil-in-water (o / w) emulsion. When the emulsion cosmetic of the third invention is a water-in-oil (w / o) emulsion, the mass ratio of (HLB less than 10):(HLB of 10 or greater) is preferably 1:1 to 15:1, more preferably 2:1 to 5:1.

[0111] The content of component (c3) in the emulsion cosmetic of the third invention is 0.1 to 10% by mass relative to the total emulsion cosmetic. If the content of component (c3) is greater than 10% by mass, it can cause stickiness, resulting in poor compatibility with wet skin and poor non-stickiness. The content is preferably 0.1 to 8% by mass, more preferably 0.1 to 5% by mass.

[0112] [Component (d3)] The cosmetic of the third invention contains water as component (d3). Water commonly used in cosmetics, pharmaceuticals, etc., such as ion-exchanged water or purified water, can be used as component (d3). The content of component (d3) is 15 to 98% by mass, preferably 20 to 95% by mass, more preferably 30 to 92% by mass, and even more preferably 40 to 90% by mass, based on the total mass of the emulsion cosmetic.

[0113] When the emulsion cosmetic of the third invention is an oil-in-water (o / w) emulsion, the content of component (d3) is 15 to 98% by mass, preferably 50 to 95% by mass, and more preferably 70 to 90% by mass, based on the total mass of the emulsion cosmetic.

[0114] When the emulsion cosmetic of the third invention is a water-in-oil (w / o) emulsion, the content of component (d3) is preferably 20 to 90% by mass, more preferably 30 to 80% by mass, and even more preferably 40 to 70% by mass, based on the total amount of the emulsion cosmetic.

[0115] [Component (e3)] The emulsion cosmetic of the third invention may further contain a thickener as component (e3). The thickener can stabilize the emulsion cosmetic of the third invention and / or provide a feeling of adhesion to the emulsion cosmetic of the third invention. A single thickener may be used, or two or more thickeners may be used in combination. The description of the thickener (component (e3)) in the third invention is the same as the description of the thickener (component (c2)) in the second invention, unless otherwise specified.

[0116] The viscosity of the aqueous solution of the thickener (25°C, pH: 6, 1% by mass) is preferably 500 to 1,200,000 mPa·s, more preferably 500 to 250,000 mPa·s, and even more preferably 1,000 to 200,000 mPa·s, from the viewpoint of adhesion.

[0117] Component (e3) is preferably at least one selected from the group consisting of xanthan gum, sodium hyaluronate, hydroxyethyl cellulose, carbomer, (acrylates / C10-30 alkyl acrylate) crosspolymer, (PEG-240 / decyltetradeceth-20 / HDI) copolymer, and (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer, more preferably at least one selected from the group consisting of xanthan gum, carbomer, (acrylates / C10-30 alkyl acrylate) crosspolymer, (PEG-240 / decyltetradeceth-20 / HDI) copolymer, and (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymer, and even more preferably at least one selected from the group consisting of xanthan gum and carbomer.

[0118] When the emulsion cosmetic of the third invention contains component (e3), the content thereof is preferably 0.05 to 5.0% by mass relative to the entire emulsion cosmetic.

[0119] [Component (f3)] The emulsion cosmetic of the third invention may contain a pH adjuster as component (f3) to adjust its pH within a desired range. The pH adjuster may be used alone or in combination of two or more types.

[0120] There are no particular limitations on the pH adjuster, as long as it is one that can be commonly used in cosmetics, and both basic substances and acidic substances can be used.

[0121] Examples of basic substances include alkali metal hydroxides (e.g., sodium hydroxide, potassium hydroxide), lysine, arginine, sodium citrate, etc. The basic substance is preferably at least one selected from the group consisting of alkali metal hydroxides, arginine, and sodium citrate, more preferably at least one selected from the group consisting of sodium hydroxide, potassium hydroxide, arginine, and sodium citrate, and even more preferably potassium hydroxide.

[0122] Examples of acidic substances include citric acid, succinic acid, phosphoric acid, glycolic acid, tartaric acid, lactic acid, aspartic acid, glutamic acid, carbonic acid, etc. The acidic substance is preferably at least one selected from the group consisting of citric acid, succinic acid, and phosphoric acid, and more preferably citric acid.

[0123] Component (f3) is preferably at least one selected from the group consisting of alkali metal hydroxides, arginine, sodium citrate, citric acid, succinic acid, and phosphoric acid, more preferably at least one selected from the group consisting of sodium hydroxide, potassium hydroxide, arginine, sodium citrate, and citric acid, and even more preferably at least one selected from potassium hydroxide and citric acid.

[0124] When component (f3) is used, the content of component (f3) is adjusted so that the pH of the emulsion cosmetic of the third invention falls within a desired range. The pH of the emulsion cosmetic of the third invention is preferably 4 to 8, and more preferably 5 to 7.

[0125] [Other Components] The emulsion cosmetic of the third invention may contain other components different from components (a3) ​​to (f3) as needed, as long as the effects of the third invention are not impaired. There are no particular limitations on the other components, as long as they are components commonly used in cosmetics. Examples of other components include plant extracts, anti-inflammatory and anti-chattering agents, UV absorbers, UV scattering agents, preservatives, chelating agents, fragrances, etc. One type of other component may be used alone, or two or more types may be used in combination.

[0126] The total amount of other components is preferably 50% by mass or less, and more preferably 40% by mass or less, of the entire emulsion cosmetic, from the viewpoints of compatibility with wet skin, suppression of thickening, adhesion, and lack of stickiness.

[0127] The emulsion cosmetic of the third invention may be an oil-in-water (o / w) emulsion or a water-in-oil (w / o) emulsion. From the viewpoint of non-stickiness, the emulsion cosmetic of the third invention is preferably an oil-in-water emulsion.

[0128] The emulsion cosmetic of the third invention can be produced by mixing and stirring components (a3) ​​to (d3), and, if necessary, at least one selected from the group consisting of components (e3), (f3), and other components.

[0129] The form of the emulsified cosmetic of the third invention is not particularly limited, and examples of the form include cream, liquid, emulsion, and gel.

[0130] The uses of the emulsified cosmetic of the third invention are not particularly limited, and examples of uses include face cream, body cream, sunscreen cream, moisturizing cream, hand cream, body cream, foot cream, massage cream, emulsion, liquid foundation, cleansing agent, etc.

[0131] The present invention will be described in detail below with reference to examples and comparative examples. In the following, "%" in the amounts of components means "% by mass" unless otherwise specified.

[0132] [Production Example 1: Synthesis of Example Polyether Polyol 1] A four-necked flask equipped with a stirrer, a nitrogen inlet tube, a thermocouple, and a condenser was charged with 700 g of triethylene glycol (manufactured by Kanto Chemical Co., Ltd.) and 456 g of 1,3-propanediol (manufactured by Kanto Chemical Co., Ltd.) as polyhydric alcohols, and 14.5 g of sulfuric acid (manufactured by Kanto Chemical Co., Ltd.) as a catalyst. After nitrogen substitution, the temperature was raised to 130 ° C., and a dehydration condensation reaction was carried out under nitrogen bubbling conditions. Thereafter, an adsorbent (manufactured by Kyowa Chemical Industry Co., Ltd.) was added, and the mixture was subjected to adsorption treatment for 1 hour under nitrogen bubbling at a temperature of 90 ° C. and a pressure of -0.097 MPa (gauge pressure) or less, followed by filtration to obtain Example Polyether Polyol 1.

[0133] [Production Example 2: Synthesis of Example Polyether Polyol 6] A four-necked flask equipped with a stirrer, a nitrogen inlet tube, a thermocouple, and a condenser was charged with 460 g of glycerin (manufactured by Kanto Chemical Co., Ltd.) and 913 g of 1,3-propanediol (manufactured by Kanto Chemical Co., Ltd.) as polyhydric alcohols, and 17.2 g of sulfuric acid (manufactured by Kanto Chemical Co., Ltd.) as a catalyst. After nitrogen substitution, the temperature was raised to 130 ° C., and a dehydration condensation reaction was carried out under nitrogen bubbling conditions. Thereafter, an adsorbent (manufactured by Kyowa Chemical Industry Co., Ltd.) was added, and the mixture was subjected to adsorption treatment for 1 hour under nitrogen bubbling at a temperature of 90 ° C. and a pressure of -0.097 MPa (gauge pressure) or less, followed by filtration to obtain Example Polyether Polyol 6. The molar ratio of group (2) / group (3) of Example Polyether Polyol 6 was calculated using the following method and found to be 63 / 37.

[0134] (Calculation of the molar ratio of group (2) / group (3)) １３ C-NMR measurement was performed with inverse gate decoupling, and the molar ratio of group (2) / group (3) was calculated by comparing the integral value of the signal of the methine carbon of group (2) (around 71 ppm) with the integral value of the signal of the methine carbon of group (3) (around 79 ppm). １３ The conditions for C-NMR measurement are as follows: １３ C-NMR device: JNM-ECA600 (JEOL-NMR) ・Solvent: D ２ O Sample concentration: 100 mg / 0.6 mL Temperature: 25°C Number of accumulations: 256

[0135] [Production Example 3: Synthesis of Example Polyether Polyols 2 to 5 and 7 to 9 and Comparative Example Polyether Polyols 1 to 7] Example polyether polyols 2 to 5 and 7 to 9 and Comparative Example polyether polyols 1 to 7 were synthesized in the same manner as in Production Example 1 or 2, except that the type and degree of polymerization of the polyhydric alcohol used were different. Note that glycerin was used as the polyhydric alcohol forming GL in formula (1), and CH ２ CH ２ Polyhydric alcohols forming CH ２ CH ２ The raw materials for CH3O are listed in Table 1 or Table 2 below. ２ CH ２ CH ２ 1,3-propanediol was used as the polyhydric alcohol that forms O.

[0136] [Production Example 4: Synthesis of Comparative Polyether Polyol 8] 152 g of 1,2-propanediol and 6.0 g of potassium hydroxide were charged into an autoclave equipped with a thermometer, pressure gauge, safety valve, nitrogen gas inlet tube, stirrer, vacuum exhaust tube, cooling coil, and steam jacket. After nitrogen substitution, the temperature was raised to 115°C, and a mixture of 697 g of propylene oxide and 1,233 g of ethylene oxide was added over 8 hours under conditions of 0.5 MPa or less. After completion of the addition, the mixture was reacted at 115°C for 1 hour, subjected to reduced pressure treatment at 75 to 85°C for 1 hour, and filtered to obtain Comparative Polyether Polyol 8. The weight average molecular weight (hereinafter sometimes abbreviated as "Mw") of Comparative Polyether Polyol 9 measured under the conditions described below was 1,030. Comparative Example Polyether Polyol 9 has a structure different from that of the polyether polyol of the present invention in that it has a repeating unit derived from propylene oxide (i.e., a branched propyleneoxy group different from the linear 1,3-propanediol residue).

[0137] [Production Example 5: Synthesis of Comparative Polyether 9] Comparative polyether polyol 8 (1000 g) obtained in Production Example 3 and potassium hydroxide (110 g) were charged into an autoclave equipped with a thermometer, pressure gauge, safety valve, nitrogen gas inlet tube, stirrer, vacuum exhaust tube, cooling coil, and steam jacket. After nitrogen substitution, methyl chloride (120 g) was injected as an alkyl etherifying agent at a temperature of 80 ° C. to 130 ° C. and reacted for 5 hours. Thereafter, the reaction mixture was removed from the autoclave, subjected to adsorption treatment for 1 hour, and then filtered to obtain comparative polyether 9. The Mw of comparative polyether 9 measured under the conditions described below was 1050. Comparative polyether 9 was obtained by converting the terminal OH of comparative polyether polyol 9 to OCH ３ and has a repeating unit derived from propylene oxide (i.e., a branched propyleneoxy group), and thus differs in structure from the polyether polyol of the present invention.

[0138] [Production Example 6: Synthesis of Comparative Polyether Polyol 10] 152 g of glycerin and 7.0 g of potassium hydroxide were charged into an autoclave equipped with a thermometer, pressure gauge, safety valve, nitrogen gas inlet tube, stirrer, vacuum exhaust tube, cooling coil, and steam jacket. After nitrogen substitution, the temperature was raised to 120 ° C., and a mixture of 734.5 g of glycidol and 1,439.4 g of propylene oxide was added over 20 hours under conditions of 0.5 MPa or less. After completion of the addition, the reaction was allowed to proceed for 2 hours at 120 ° C. The reaction mixture was then removed from the autoclave, subjected to adsorption treatment for 1 hour, and filtered to obtain Comparative Polyether Polyol 10, a random copolymer in which 6 moles of glycidol and 15 moles of propylene oxide were added per mole of glycerin. The Mw of Comparative Polyether Polyol 10 measured under the conditions described below was 1,430. Comparative Example Polyether Polyol 10 has a structure different from that of the polyether polyol of the present invention in that it has a repeating unit derived from glycidol and a repeating unit derived from propylene oxide (i.e., a branched propyleneoxy group).

[0139] The a, b, a+b, c, b / c (when a is 0), (a+b) / c, and CH of the obtained Example Polyether Polyols 1 to 9 and Comparative Example Polyether Polyols 1 to 7 were ２ CH ２ The raw materials and Mw of O are shown in Tables 1 and 2.

[0140] The Mw of each of Example Polyether Polyols 1 to 9, Comparative Polyether Polyols 1 to 8 and 10, and Comparative Polyether 9 (hereinafter sometimes abbreviated as "Example or Comparative Polymers") was calculated by gel permeation chromatography (GPC) under the following conditions: GPC was performed using a SHODEX (registered trademark) GPC101 GPC-dedicated system as the system, a SHODEX RI-71s differential refractometer, a SHODEX KF-G guard column, and three SHODEX KF804L columns in series, with the column temperature at 40°C and tetrahydrofuran as the developing solvent at a flow rate of 1 mL / min. 0.1 mL of a 0.1% tetrahydrofuran solution of the resulting Example or Comparative Polymer and 0.1 mL of a 0.1% tetrahydrofuran solution of PEG were injected, and the Mw was calculated from a chromatogram represented by refractive index intensity and elution time using a BORWIN GPC calculation program.

[0141] (Evaluation of compatibility with fats and oils) 0.1 parts by mass of the polymer of the Example or Comparative Example was added to 100 parts by mass of olive oil and stirred at room temperature for 30 minutes to prepare a mixture of olive oil and the polymer of the Example or Comparative Example. The appearance of each mixture was observed, and the compatibility with fats and oils was evaluated according to the following criteria. The results are shown in Table 3. <Evaluation criteria> ◎: The mixture is uniform and transparent. ○: The mixture is uniform and translucent. ×: The mixture is non-uniform and cloudy, or separated.

[0142] (Evaluation of compatibility with water) 5 parts by mass of the polymer of the Example or Comparative Example was added to 100 parts by mass of purified water and stirred at room temperature for 30 minutes to prepare a mixture of purified water and the polymer of the Example or Comparative Example. The appearance of each mixture was observed, and the compatibility with water was evaluated according to the following criteria. The results are shown in Table 3. <Evaluation criteria> ◎: The mixture is uniform and transparent. ○: The mixture is uniform and translucent. ×: The mixture is non-uniform and cloudy, or separated.

[0143]

[0144]

[0145]

[0146] [Production Example 7: Production of Example Cosmetics 1 to 12 and Comparative Example Cosmetics 1 to 10] Example cosmetics 1 to 12 and Comparative Example cosmetics 1 to 10 were produced by mixing and stirring the polymers of the Examples or Comparative Examples, the common components, and purified water in the amounts shown in Tables 4 or 5. The compositions of the common components are shown in Table 6.

[0147] (Evaluation of Moisture-Retaining Effect) Ten men and women (aged 25 to 50) served as panelists. In a constant temperature and humidity room set at a temperature of 20°C and a relative humidity of 50%, 0.3 g of each cosmetic obtained in Production Example 7 was applied to the inside of the right forearm of each panelist, and the moisture content of the stratum corneum before application and one hour after application was measured using a skin surface stratum corneum moisture content measuring device (SKICON-200EX, manufactured by IBS Co., Ltd.). A relative value was calculated, with the value before application being set at 1, and the score was determined according to the following criteria. A total score for the 10 panelists was calculated, and the moisturizing effect was evaluated according to the following criteria. The results are shown in Tables 4 and 5. <Scoring criteria> 3 points: relative value of 3 or more 2 points: relative value of 2 or more but less than 3 1 point: relative value less than 2 <Evaluation criteria> ⊚: total score is 25 points or more ◯: total score is 20 points or more but less than 24 points ×: total score is 19 points or less

[0148] (Evaluation of non-stickiness) Ten men and women (aged 25 to 50) served as panelists. 0.3 g of each cosmetic obtained in Production Example 7 was applied to the inside of the right forearm of each panelist, and the panelists were rated for stickiness according to the following criteria. The total score of the 10 panelists was calculated, and the non-stickiness was evaluated according to the following criteria. The results are shown in Tables 4 and 5. <Scoring criteria> 3 points: No stickiness 2 points: Slight stickiness 1 point: Stickiness <Evaluation criteria> ◎: Total score is 25 points or more ○: Total score is 20 points or more and 24 points or less ×: Total score is 19 points or less

[0149] (Evaluation of Durability of Shine-Suppressing Effect) Ten men and women (aged 25 to 50) served as panelists. 0.1 g of oleic acid was applied as a pseudo-sebum component to the inside of the right forearm of each panelist, and after allowing it to absorb into the skin, 0.5 g of each cosmetic composition obtained in Production Example 7 was applied to the same area. Five hours after application, the level of shine was scored according to the following criteria. The total score of the 10 panelists was calculated, and the durability of the shine-suppressing effect was evaluated according to the following criteria. The results are shown in Tables 4 and 5. <Scoring criteria> 3 points: Shine is suppressed 2 points: Shine is slightly suppressed 1 point: Shine is not suppressed <Evaluation criteria> ◎: Total score is 25 points or more ○: Total score is 20 points or more and 24 points or less ×: Total score is 19 points or less

[0150]

[0151]

[0152]

[0153] As is clear from Table 3, Example Polyether Polyols 1 to 9 had excellent compatibility with oils and fats. Furthermore, as is clear from Table 4, Example Cosmetics 1 to 12 had excellent moisturizing effect, non-stickiness, and durability of the shine-suppressing effect.

[0154] In contrast, Comparative Example Polyether Polyols 1 to 8 and 10, Comparative Example Polyether 9, and Comparative Example Cosmetics 1 to 10 were inferior in any of the above evaluation items.

[0155] Comparative Example Polyether Polyol 1, in which b / c exceeds 8, has poor compatibility with oils and fats, and Comparative Example Cosmetic Preparation 1 containing this had poor non-sticky feeling and poor durability of the shine-suppressing effect.

[0156] Comparative Example Polyether Polyol 2, in which a is 0 and b / c is less than 1, has poor compatibility with water, and Comparative Example Cosmetic Preparation 2 containing this polyether polyol was poor in terms of the lack of stickiness and the durability of the shine-suppressing effect.

[0157] Comparative Example Polyether Polyol 3, in which a exceeds 30 and (a+b) / c exceeds 8, has poor compatibility with oils and fats, and Comparative Example Cosmetic Preparation 3 containing this polyether polyol was poor in terms of non-stickiness and durability of the shine-suppressing effect.

[0158] Comparative Example Polyether Polyol 4, in which (a+b) / c is less than 0.2, has poor compatibility with water, and Comparative Example Cosmetic Preparation 4 containing this polyether polyol separated and could not be evaluated.

[0159] Comparative Example Polyether Polyol 5, in which (a+b) / c is less than 0.2, has poor compatibility with water, and Comparative Example Cosmetic Preparation 5 containing it was poor in moisturizing effect, lack of stickiness, and durability of the shine-suppressing effect.

[0160] Comparative Example Polyether Polyol 6, which had a b greater than 80, had poor compatibility with oils and fats, and Comparative Example Cosmetic Preparation 6 containing it had poor durability of the moisturizing effect and the shine-suppressing effect.

[0161] Comparative Example Polyether Polyol 7, which had a value of c greater than 70, had poor compatibility with water, and Comparative Example Cosmetic Preparation 7 containing this had poor moisturizing effect.

[0162] Comparative Example Polyether Polyol 8, which is a copolymer of ethylene oxide and propylene oxide and has a structure different from that of the polyether polyol of the present invention, has poor compatibility with oils and fats, and Comparative Example Cosmetic Preparation 8 containing this was inferior in terms of the lack of stickiness and the durability of the shine-suppressing effect.

[0163] Comparative Example Polyether 9, which is a copolymer of ethylene oxide and propylene oxide and has a structure different from that of the polyether polyol of the present invention, has poor compatibility with oils and fats, and Comparative Example Cosmetic Preparation 9 containing this had poor durability of the shine-suppressing effect.

[0164] Comparative Polyether Polyol 10, which is a copolymer of glycidol and propylene oxide and has a structure different from that of the polyether polyol of the present invention, had poor compatibility with oils and fats. Furthermore, Comparative Cosmetic Preparation 10, which contained Comparative Polyether Polyol 10, was inferior in terms of the lack of stickiness and the durability of the shine-reducing effect.

[0165] [Formulation examples of cosmetics] Formulation examples of cosmetics of the first invention (shampoo, treatment, cleansing oil, cleansing water, body soap (foamer type, liquid type), facial cleansing paste) are shown in Tables 7 to 13 below. The amounts of ingredients shown in Tables 7 to 13 are values ​​based on the entire cosmetic. Furthermore, the cosmetic labeling name of the Japan Cosmetic Industry Association has been used as the name of each ingredient listed in Tables 7 to 13 below, as appropriate. Note that the first invention is not limited to the following formulation examples.

[0166]

[0167]

[0168]

[0169]

[0170]

[0171]

[0172]

[0173] [Production of Skin Cosmetics: Examples 2-1 to 2-20 and Comparative Examples 2-1 to 2-12] The components were mixed in the amounts shown in Tables 14 to 17 to produce the skin cosmetics of Examples 2-1 to 2-20 and Comparative Examples 2-1 to 2-12. In Tables 16 and 17 below, comparative polyether polyols 1 to 3, 5 to 8, and 10, and comparative polyether 9, which do not satisfy the requirements of the second invention, are classified as component (a2'). In addition, component (e2) (pH adjuster) was used as appropriate to adjust the pH of each skin cosmetic to approximately 6.

[0174] The viscosity (25°C, pH: 6, 1 mass%) of an aqueous solution of the thickener (component (c2)) is as follows. Viscosity of xanthan gum aqueous solution (25°C, pH: 6, 1% by mass): 1,200 mPa·s Viscosity of (PEG-240 / Decyltetradeceth-20 / HDI) copolymer aqueous solution (25°C, pH: 6, 1% by mass): 40,000 mPa·s Viscosity of (acrylic acid / hydroxyethyl / sodium acryloyldimethyltaurate) copolymer aqueous solution (25°C, pH: 6, 1% by mass): 170,000 mPa·s Viscosity of carbomer aqueous solution (25°C, pH: 6, 1% by mass): 130,000 mPa·s Viscosity of (acrylates / C10-30 alkyl acrylate) crosspolymer aqueous solution (25°C, pH: 6, 1% by mass): 70,000 mPa·s Viscosity of hydroxyethyl cellulose aqueous solution (25°C, pH: 6, 1% by mass): 2,000 mPa·s Viscosity of 1% aqueous solution of hyaluronic acid Na at 25°C (25°C, pH: 6, 1% by mass): 1,000,000 mPa·s. In measuring viscosity of aqueous solution of thickener (25°C, pH: 6, 1% by mass), if the pH of the aqueous solution of thickener with a concentration of 1% by mass is higher than 6, use citric acid to adjust its pH to 6, and if the pH of the aqueous solution of thickener with a concentration of 1% by mass is lower than 6, use potassium hydroxide to adjust its pH to 6.

[0175]

[0176]

[0177]

[0178]

[0179] [Evaluation of Skin Cosmetics] The obtained skin cosmetics were evaluated by the following methods. The results are shown in Tables 18 to 20.

[0180] (Evaluation of Skin Compatibility) Ten male and female panelists (aged 25 to 50) were used as panelists, and 0.1 g of each of the obtained skin cosmetics was applied to the inside of the right forearm of each panelist, and the skin compatibility immediately after application was scored according to the following criteria. The total scores of the 10 panelists were calculated, and the skin compatibility was evaluated according to the following criteria. Skin cosmetics rated "A," "B," "C," or "D" were judged to have excellent skin compatibility. <Scoring criteria> 3 points: Feels to be well-compatible with the skin 2 points: Feels to be slightly well-compatible with the skin 1 point: Feels to be poorly-compatible with the skin <Evaluation criteria> A: Total score is 28 points or more B: Total score is 25 points or more and 27 points or less C: Total score is 23 points or more and 24 points or less D: Total score is 20 points or more and 22 points or less E: Total score is 19 points or less

[0181] (Evaluation of smooth feeling) Ten men and women (aged 25 to 50) served as panelists, and 0.1 g of each of the obtained skin cosmetics was applied to the inside of the right forearm of each panelist, and the smooth feeling was rated according to the following criteria. The total score of the 10 panelists was calculated, and the smooth feeling was evaluated according to the following criteria. Skin cosmetics rated "A," "B," "C," or "D" were determined to have excellent smooth feeling. In the second invention, "smooth feeling" refers to the feeling of the skin cosmetic spreading on the skin without any stickiness or stickiness. <Scoring criteria> 4 points: Strongly smooth feeling 3 points: Slightly smooth feeling 2 points: Slightly smooth feeling 1 point: No smooth feeling <Evaluation criteria> A: Total score is 35 points or more B: Total score is 30 points or more and 34 points or less C: Total score is 25 points or more and 29 points or less D: Total score is 20 points or more and 24 points or less E: Total score is 19 points or less

[0182] (Evaluation of Elasticity) Ten male and female panelists (aged 25 to 50) were used as panelists, and 0.1 g of each of the obtained skin cosmetics was applied to the inside of the right forearm of each panelist and allowed to absorb into the skin. The elasticity felt when the skin was then pressed with a finger was scored according to the following criteria. The total scores of the 10 panelists were calculated, and the elasticity was evaluated according to the following criteria. Skin cosmetics rated "A," "B," "C," or "D" were determined to have excellent elasticity after application. <Scoring criteria> 4 points: Strong elasticity 3 points: Elasticity 2 points: Slight elasticity 1 point: No elasticity <Evaluation criteria> A: Total score is 35 points or more B: Total score is 30 points or more and 34 points or less C: Total score is 25 points or more and 29 points or less D: Total score is 20 points or more and 24 points or less E: Total score is 19 points or less

[0183] (Evaluation of Glow-Promoting Effect) Ten male and female panelists (aged 25 to 50) were used as panelists, and 0.1 g of each of the obtained skin cosmetics was applied to the inside of the right forearm of each panelist and allowed to blend into the skin. The skin was then visually inspected, and the skin gloss was scored according to the following criteria. The total score of the 10 panelists was calculated, and the glow-promoting effect was evaluated according to the following criteria. Skin cosmetics rated "A," "B," "C," or "D" were determined to be skin cosmetics with excellent glow-promoting effect. <Scoring criteria> 4 points: A strong sense of gloss 3 points: A sense of gloss 2 points: A slight sense of gloss 1 point: No sense of gloss <Evaluation criteria> A: Total score is 37 points or more B: Total score is 33 points or more and 36 points or less C: Total score is 29 points or more and 32 points or less D: Total score is 24 points or more and 28 points or less E: Total score is 23 points or less

[0184] (Evaluation of Moisturizing Effect) Ten male and female panelists (aged 25 to 50) were used as panelists, and 0.1 g of each obtained skin cosmetic preparation was applied to the inside of the right forearm of each panelist. The moisture content of the stratum corneum before and 2 hours after application was measured using a skin surface stratum corneum moisture content measuring device (SKICON-200EX, manufactured by IBS Corporation). The moisture content of the stratum corneum after application was calculated relative to the moisture content of the stratum corneum before application (hereinafter referred to as "relative value"), with the value of the moisture content of the stratum corneum before application being set at 1, and the results were scored according to the following criteria. The total score of the 10 panelists was calculated, and the moisturizing effect was evaluated according to the following criteria. Skin cosmetics rated "A," "B," "C," or "D" were determined to have excellent moisturizing effect. <Scoring criteria> 4 points: Relative value is 3.0 or more 3 points: Relative value is 2.5 or more and less than 3.0 2 points: Relative value is 2.0 or more and less than 2.5 1 point: Relative value is less than 2.0 <Evaluation criteria> A: Total score is 35 points or more B: Total score is 30 points or more and less than 34 points C: Total score is 25 points or more and less than 29 points D: Total score is 20 points or more and less than 24 points E: Total score is 19 points or less

[0185]

[0186]

[0187]

[0188]

[0189] As is clear from Tables 18 and 19, the skin cosmetics of Examples 2-1 to 2-20 were excellent in compatibility with the skin, smooth feeling, elasticity, gloss-imparting effect, and moisturizing effect.

[0190] In contrast, the skin cosmetics of Comparative Examples 2-1 to 2-12 were inferior in any of the above evaluation items. The skin cosmetic of Comparative Example 2-1, which did not contain component (a2), was inferior in skin compatibility, smooth feeling, elasticity, gloss-imparting effect, and moisturizing effect.

[0191] The skin cosmetic of Comparative Example 2-2, which did not contain component (b2), was inferior in elasticity, gloss-imparting effect, and moisturizing effect.The skin cosmetic of Comparative Example 2-3, which did not contain component (c2), was inferior in smoothness, elasticity, and gloss-imparting effect.

[0192] The skin cosmetic of Comparative Example 2-4, which contained Comparative Example polyether polyol 1 in which b / c exceeded 8 instead of component (a2), was inferior in compatibility with the skin, smooth feeling, and gloss-imparting effect. The skin cosmetic of Comparative Example 2-5, which contained Comparative Example polyether polyol 2 in which a was 0 and b / c was less than 1 instead of component (a2), was inferior in gloss-imparting effect.

[0193] The skin cosmetic of Comparative Example 2-6, which contained Comparative Example polyether polyol 3 in which a exceeds 30 and (a + b) / c exceeds 8 instead of component (a2), was inferior in compatibility with the skin, smooth feeling, and gloss-imparting effect. The skin cosmetic of Comparative Example 2-7, which contained Comparative Example polyether polyol 5 in which (a + b) / c is less than 0.2 instead of component (a2), was inferior in elasticity, gloss-imparting effect, and moisturizing effect.

[0194] The skin cosmetic of Comparative Example 2-8, which contained Comparative Example polyether polyol 6 in which b was greater than 80 instead of component (a2), was inferior in compatibility with the skin, smooth feel, elasticity, gloss-imparting effect, and moisturizing effect. The skin cosmetic of Comparative Example 2-9, which contained Comparative Example polyether polyol 7 in which c was greater than 70 instead of component (a2), was inferior in smooth feel, elasticity, gloss-imparting effect, and moisturizing effect.

[0195] The skin cosmetic of Comparative Example 2-10, which contained Comparative Polyether Polyol 8, a copolymer of ethylene oxide and propylene oxide and structurally different from the polyether polyols of the present invention, instead of component (a2), was inferior in the smooth feel, elasticity, and shine-imparting effects.The skin cosmetic of Comparative Example 2-11, which contained Comparative Polyether 9, a copolymer of ethylene oxide and propylene oxide and structurally different from the polyether polyols of the present invention, instead of component (a2), was inferior in the smooth feel, elasticity, and shine-imparting effects.

[0196] The skin cosmetic preparation of Comparative Example 2-12, which contained Comparative Example Polyether Polyol 10, a copolymer of glycerin, glycidol, and propylene oxide instead of component (a2) and which has a structure different from that of the polyether polyol of the present invention, was inferior in skin compatibility, smooth feeling, and gloss-imparting effect.

[0197] [Production and Evaluation of Skin Cosmetics: Examples 2-21 to 2-25] Skin cosmetics of Examples 2-21 to 2-25 were produced by mixing the components in the amounts shown in Tables 22 and 23. The pH of each skin cosmetic was adjusted to approximately 6 with component (e2) (pH adjuster).

[0198] The obtained skin cosmetics of Examples 2-21 to 2-25 were evaluated in the same manner as in Examples 2-1 to 2-20. The results are shown in Table 24. As is clear from Table 24, the skin cosmetics of Examples 2-21 to 2-25 were excellent in terms of compatibility with the skin, smooth feel, elasticity, gloss-imparting effect, and moisturizing effect.

[0199]

[0200]

[0201]

[0202]

[0203] [Production of Emulsion Cosmetics: Examples 3-1 to 3-27 and Comparative Examples 3-1 to 3-12] The components were mixed in the amounts shown in Tables 25 to 31 to produce the emulsion cosmetics of Examples 3-1 to 3-27 and Comparative Examples 3-1 to 3-12. Examples 3-1 to 3-21, 3-25, and 3-26, as well as Comparative Examples 3-1 to 3-12, are oil-in-water emulsions, while Examples 3-22 to 3-24 and 3-27 are water-in-oil emulsions. In Tables 30 and 31 below, Comparative Example Polyether Polyols 1 to 3, 5 to 8, and 10, as well as Comparative Example Polyether 9, which do not satisfy the requirements of the third invention, are classified as component (a3'). Component (f3) (pH adjuster) was used as appropriate to adjust the pH of each emulsion cosmetic to approximately 6.

[0204] The viscosity of aqueous solutions of the thickener (component (e3)) (25°C, pH: about 6, 1% by mass) is as follows: Viscosity of aqueous carbomer solution (25°C, pH: about 6, 1% by mass): 130,000 mPa·s Viscosity of aqueous solution of (acrylates / C10-30 alkyl acrylate) crosspolymer (25°C, pH: about 6, 1% by mass): 70,000 mPa·s Viscosity of aqueous xanthan gum solution (25°C, pH: about 6, 1% by mass): 1,200 mPa·s Viscosity of aqueous solution of (PEG-240 / decyltetradeceth-20 / HDI) copolymer (25°C, pH: about 6, 1% by mass): 40,000 mPa·s Viscosity of aqueous solution of (acrylic acid / hydroxyethyl / sodium acryloyldimethyltaurate) copolymer (25°C, pH: about 6, 1% by mass): 170,000 mPa·s In measuring the viscosity of the aqueous thickener solution (25°C, pH: 6, 1% by mass), if the pH of the aqueous thickener solution with a concentration of 1% by mass was higher than 6, the pH was adjusted to 6 using citric acid, and if the pH of the aqueous thickener solution with a concentration of 1% by mass was lower than 6, the pH was adjusted to 6 using potassium hydroxide.

[0205]

[0206]

[0207]

[0208]

[0209]

[0210]

[0211]

[0212] [Evaluation of Emulsion Cosmetics] The obtained emulsion cosmetics were evaluated by the following methods. The evaluation results and total scores for each evaluation are shown in Tables 32 to 38.

[0213] (Evaluation of compatibility with wet skin) Ten men and women (aged 25 to 50) served as panelists. Each panelist applied 0.3 g of water to the inside of their right forearm, and immediately thereafter applied 0.3 g of each of the obtained emulsion cosmetics, and the compatibility with wet skin was scored according to the following criteria. The total scores of the 10 panelists were calculated, and the compatibility with wet skin was evaluated according to the following criteria. Emulsion cosmetics rated as "◎" or "◯" were judged to be emulsion cosmetics with excellent compatibility with wet skin. <Scoring criteria> 3 points: Very good compatibility with wet skin 2 points: Good compatibility with wet skin 1 point: Poor compatibility with wet skin <Evaluation criteria> ◎: Total score is 25 points or more ○: Total score is 20 points or more and 24 points or less ×: Total score is 19 points or less

[0214] (Evaluation of Thickening Suppression) Ten men and women (aged 25 to 50) served as panelists. 0.3 g of each obtained emulsion cosmetic was applied to the inside of the right forearm of each panelist, and the thickening from the start of application until drying was scored according to the following criteria. The total score of the 10 panelists was calculated, and the thickening suppression was evaluated according to the following criteria. Emulsion cosmetics rated as "◎" or "◯" were judged to be emulsion cosmetics with excellent thickening suppression. <Scoring criteria> 3 points: No thickening 2 points: Slight thickening 1 point: Thickening <Evaluation criteria> ◎: Total score is 25 points or more ◯: Total score is 20 points or more and 24 points or less ×: Total score is 19 points or less

[0215] (Evaluation of Adhesion Feeling) Ten men and women (aged 25 to 50) served as panelists. Each panelist applied 0.3 g of each of the obtained emulsion cosmetics to the inside of their right forearm, and then scored the adhesion feeling according to the following criteria. The total score of the 10 panelists was calculated, and the adhesion feeling was evaluated according to the following criteria. Emulsion cosmetics rated as "◎" or "◯" were judged to have excellent adhesion feeling. <Scoring criteria> 3 points: Adhesion feeling felt 2 points: Slight adhesion feeling felt 1 point: No adhesion feeling felt <Evaluation criteria> ◎: Total score is 25 points or more ○: Total score is 20 points or more and 24 points or less ×: Total score is 19 points or less

[0216] (Evaluation of non-stickiness) Ten men and women (aged 25 to 50) served as panelists. 0.3 g of each cosmetic obtained was applied to the inside of the right forearm of each panelist, and the non-stickiness after drying was scored according to the following criteria. The total score of the 10 panelists was calculated, and the non-stickiness was evaluated according to the following criteria. Emulsion cosmetics rated as "◎" or "◯" were judged to be emulsion cosmetics with excellent non-stickiness. <Scoring criteria> 3 points: No stickiness 2 points: Slight stickiness 1 point: Stickiness <Evaluation criteria> ◎: Total score is 25 points or more ○: Total score is 20 points or more and 24 points or less ×: Total score is 19 points or less

[0217] (Evaluation of the durability of the shine-suppressing effect) Ten men and women (aged 25 to 50) served as panelists. 0.1 g of oleic acid was applied as a pseudo-sebum component to the inside of the right forearm of each panelist, and after allowing it to absorb into the skin, 0.5 g of each of the obtained emulsion cosmetics was applied to the same area. The shine level 5 hours after application was scored according to the following criteria. The total scores of the 10 panelists were calculated, and the durability of the shine-suppressing effect was evaluated according to the following criteria. Emulsion cosmetics rated as "◎" or "◯" were judged to have excellent durability of the shine-suppressing effect. <Scoring criteria> 3 points: Shine is suppressed 2 points: Shine is slightly suppressed 1 point: Shine is not suppressed <Evaluation criteria> ◎: Total score is 25 points or more ○: Total score is 20 points or more and 24 points or less ×: Total score is 19 points or less

[0218]

[0219]

[0220]

[0221]

[0222]

[0223]

[0224]

[0225] As is clear from Tables 32 to 36, the emulsion cosmetics of Examples 3-1 to 3-27 were excellent in compatibility with wet skin, suppression of thickening, adhesion, non-stickiness, and durability of the shine-suppressing effect.

[0226] In contrast, the emulsion cosmetics of Comparative Examples 3-1 to 3-12 were inferior in any of the above evaluation items. The emulsion cosmetic of Comparative Example 3-1, which contained Comparative Example polyether polyol 1 in which b / c exceeded 8, was inferior in compatibility with wet skin, non-stickiness, and durability of the shine-suppressing effect. The emulsion cosmetic of Comparative Example 3-2, which contained Comparative Example polyether polyol 2 in which a was 0 and b / c was less than 1, was inferior in adhesion, non-stickiness, and durability of the shine-suppressing effect.

[0227] The emulsion cosmetic of Comparative Example 3-3, which contained Comparative Example polyether polyol 3 in which a exceeded 30 and (a+b) / c exceeded 8, was inferior in compatibility with wet skin, lack of stickiness, and durability of the shine-reducing effect. The emulsion cosmetic of Comparative Example 3-4, which contained Comparative Example polyether polyol 5 in which (a+b) / c was less than 0.2, was inferior in adhesion and durability of the shine-reducing effect.

[0228] The emulsion cosmetic of Comparative Example 3-5, which contained Comparative Example polyether polyol 6 in which b was greater than 80, was inferior in compatibility with wet skin and in the durability of the thickening-inhibiting and shine-inhibiting effects. The emulsion cosmetic of Comparative Example 3-6, which contained Comparative Example polyether polyol 7 in which c was greater than 70, was inferior in the adhesion feeling and the durability of the shine-inhibiting effect.

[0229] The emulsion cosmetic of Comparative Example 3-7, which contained Comparative Polyether Polyol 8, a copolymer of ethylene oxide and propylene oxide and structurally different from the polyether polyol of the present invention, was inferior in the durability of the thickening suppression and shine suppression effects.The emulsion cosmetic of Comparative Example 3-8, which contained Comparative Polyether 9, a copolymer of ethylene oxide and propylene oxide and structurally different from the polyether polyol of the present invention, was inferior in the adhesion feeling and durability of the shine suppression effects.

[0230] The emulsion cosmetic of Comparative Example 3-9, which contained Comparative Polyether Polyol 10, a copolymer of glycerin, glycidol, and propylene oxide and which has a structure different from that of the polyether polyol of the present invention, was inferior in adhesion and durability of the anti-shine effect. The emulsion cosmetic of Comparative Example 3-10, which did not contain component (a3), was inferior in compatibility with wet skin, adhesion, non-stickiness, and durability of the anti-thickening and anti-shine effects.

[0231] The emulsion cosmetic of Comparative Example 3-11, in which the content of component (b3) exceeded 50% by mass, was inferior in compatibility with wet skin, lack of stickiness, and suppression of thickening. The emulsion cosmetic of Comparative Example 3-12, in which the content of component (c3) exceeded 10% by mass, was inferior in lack of stickiness.

[0232] [Formulation examples of emulsion cosmetics] Formulation examples of emulsion cosmetics (moisturizing cream (oil-in-water type or water-in-oil type), sunscreen cream, and liquid foundation) according to the third invention are shown in Tables 39 to 42 below. The amounts of ingredients shown in Tables 39 to 42 are values ​​based on the entire emulsion cosmetic. Furthermore, the cosmetic labeling names provided by the Japan Cosmetic Industry Association have been used as appropriate for the names of the ingredients listed in Tables 39 to 42 below. Note that the third invention is not limited to the following formulation examples.

[0233]

[0234]

[0235]

[0236]

[0237]

[0238]

[0239] The cosmetic base of the first invention (i.e., the polyether polyol of the present invention) has excellent compatibility with water and with oils and fats. The skin cosmetic of the second invention has excellent compatibility with skin, a smooth feeling during application, an elastic feeling after application, a gloss-imparting effect, and a moisturizing effect. The emulsion cosmetic of the third invention has excellent compatibility with wet skin, suppression of thickening, a feeling of adhesion, a lack of stickiness, and suppression of shine.

[0240] This application is based on Japanese Patent Applications Nos. 2024-084318, 2025-053825, 2025-053927, and 2025-077606, the contents of which are incorporated in their entirety herein.

Claims

Formula (1): HO-{(GL) ａ / (CH ２ CH ２ O) ｂ / (CH ２ CH ２ CH ２ O) ｃ }-H (1) [In the formula, GL is a glycerin residue, a, b, and c are GL, CH, ２ CH ２ O, and CH ２ CH ２ CH ２ is the average degree of polymerization of O, a is a number from 0 to 30, b is a number from 0 to 80, c is a number from 1 to 70; a+b are numbers from 1 to 90, (a+b) / c is a number from 0.2 to 8, and When a is 0, b / c is a number from 1 to 8. A cosmetic base comprising a polyether polyol represented by the formula: 　 A cosmetic comprising the cosmetic base according to claim 1 in an amount of 0.1 to 30% by mass based on the total amount of the cosmetic. 　 The following components (a2) to (d2): (a2) the cosmetic base according to claim 1; (b2) a polyhydric alcohol having 3 to 9 carbon atoms; (c2) a thickener, and (d2) Water A skin cosmetic comprising: A skin cosmetic, in which the content of component (a2) is 0.1 to 10 mass %, the content of component (b2) is 1 to 30 mass %, and the content of component (c2) is 0.01 to 10 mass %, based on the total weight of the skin cosmetic. 　 The following components (a3) ​​to (d3): (a3) the cosmetic base according to claim 1; (b3) oil agent, (c3) a nonionic surfactant, and (d3) water An emulsion cosmetic comprising: An emulsion cosmetic in which the content of component (a3) ​​is 0.1 to 30 mass%, the content of component (b3) is 1 to 50 mass%, the content of component (c3) is 0.1 to 10 mass%, and the content of component (d3) is 15 to 98 mass%, based on the total mass of the emulsion cosmetic. 　 The following component (e3): (e3) thickener The emulsion cosmetic according to claim 4, further comprising:

Images