CN115335033A

CN115335033A - Oil-in-water type emulsion cosmetic

Info

Publication number: CN115335033A
Application number: CN202180025321.5A
Authority: CN
Inventors: 田口冴惠; 嶋田英美
Original assignee: Kose Corp
Current assignee: Kose Corp
Priority date: 2020-03-31
Filing date: 2021-03-31
Publication date: 2022-11-11
Also published as: WO2021201136A1; KR20220161334A; JPWO2021201136A1; TW202203894A

Abstract

The present invention relates to an oil-in-water type emulsion cosmetic comprising the following components (a) to (D): the component (A) is 1 to 10 mass% of nicotinamide and/or tranexamic acid, the component (B) is silicone oil, the component (C) is one or more glycerin derivatives selected from the group consisting of the component (C1) represented by the general formula (1) and the component (C2) represented by the general formula (2), and the component (D) is an amphiphilic polymer.

Description

Oil-in-water type emulsion cosmetic

Technical Field

The present invention relates to an oil-in-water type emulsion cosmetic.

Background

Due to intrinsic factors such as aging and stress or extrinsic factors such as ultraviolet rays or air dryness, skin is wrinkled or slacked, and pigmentation such as spots or freckles is generated. Among them, morphological changes such as wrinkles and sagging and visual changes such as pigmentation greatly affect the appearance impression, and thus there are many people who want to improve them, and various products are provided.

In order to prevent/improve wrinkles, sagging, and pigmentation, many effective ingredients have been proposed. Among them, niacinamide (niacinamide) is known to be highly safe as an active ingredient for wrinkles and sagging and to have an effect of preventing skin aging. In addition, as a whitening agent for improving or suppressing pigmentation, the use of tranexamic acid has been proposed. However, it is known that if a large amount of nicotinamide or tranexamic acid is contained, there is an undesirable feeling of use such as stickiness.

On the other hand, there is disclosed a technique of suppressing stickiness while having an effect of improving wrinkles by blending nicotinamide, a silicone oil having a viscosity of 25mPa · s or less at 25 ℃, a polyether-modified silicon, and carboxymethyl cellulose (for example, see patent document 1).

Further, there is disclosed a technology of a cosmetic lotion having a wrinkle-improving effect and a feeling of penetration during use by combining two kinds of alkylene oxide derivatives, a 2-methacryloyloxyethyl phosphorylcholine-butyl methacrylate copolymer, and a polyol (for example, see patent document 2).

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2019-77675

Patent document 2: japanese patent laid-open No. 2015-74620

Disclosure of Invention

Problems to be solved by the invention

However, in the techniques disclosed in patent documents 1 and 2, the persistence of the feeling of penetration and the feeling of moisture may not be sufficient.

Accordingly, an object of the present invention is to provide an oil-in-water type emulsion cosmetic composition using nicotinamide and/or tranexamic acid, silicone oil, one or more selected from polyoxyalkylene addition glycerin derivatives represented by specific formulae, and an amphiphilic polymer, which is excellent in the penetration feeling and the persistence of the moisturizing feeling.

Means for solving the problems

As a result of intensive studies in view of the above circumstances, the present inventors have found that the above problems are solved by an oil-in-water type emulsion cosmetic composition containing nicotinamide and/or tranexamic acid as an active ingredient, one or more selected from polyoxyalkylene addition glycerin derivatives represented by a specific formula, and an amphiphilic polymer, and have completed the present invention.

That is, the present invention relates to an oil-in-water type emulsion cosmetic containing wrinkle or sagging whitening active ingredients, characterized by comprising the following ingredients (a) to (D) for the purpose of providing an oil-in-water type emulsion cosmetic which is excellent not only in moisturizing feeling immediately after application but also in persistence of moisturizing feeling and penetration feeling.

Item [1] an oil-in-water type emulsion cosmetic comprising the following components (A) to (D),

component (A): nicotinamide and/or tranexamic acid, the content is 1-10% by mass;

component (B): a silicone oil;

component (C): one or more glycerol derivatives selected from the group consisting of a component (c 1) represented by the following general formula and a component (c 2), wherein the component (c 1) is represented by the general formula (1) and the component (c 2) is represented by the general formula (2),

Gly-[O-t(PO) _l -(EO) _m )-(BO) _n H] ₃ ……(1)

[ in the formula (1), gly represents a residue obtained by removing a hydroxyl group from glycerol, PO represents an oxypropylene group, EO represents an oxyethylene group, l and m represent average molar numbers of addition of PO and EO, respectively, (l + m) represents a value of 1 to 60, the mass ratio (PO/EO) is 1/5 to 5/1, BO represents an oxyalkylene group having 4 carbon atoms, n represents an average molar number of addition of BO and is a value of 0 to 5]

[ in the formula (2), R represents- [ CH ] ₂ CH(CH ₃ )O]-, p, q, r, s each represent an integer of 0 to 20, and p + q + r + s represents an integer of 4 to 20]；

Component (D): an amphiphilic polymer.

Item [2] the oil-in-water type emulsion cosmetic according to item [1], wherein the component (D) is at least one selected from the group consisting of an acrylic acid-alkyl methacrylate copolymer, an ammonium acryloyldimethyltaurate/vinylpyrrolidone copolymer, an ammonium acryloyldimethyltaurate/beheneth-25 methacrylate copolymer, a hydroxyethyl acrylate/sodium acryloyldimethyltaurate copolymer, a sodium acrylate/sodium acryloyldimethyltaurate copolymer, a polyethylene glycol (PEG) -240/decyltetradecylpolyether-20/hexamethyldiisocyanate copolymer, a hydrophobized hydroxypropylcellulose, and a hydroxypropylstarch phosphoric acid.

Item [3] the oil-in-water type emulsion cosmetic according to item [1] or [2], wherein the content of the component (B) is 60% by mass or more with respect to the total amount of an oil agent contained in the oil-in-water type emulsion cosmetic.

[4] the oil-in-water type emulsion cosmetic according to any one of the items [1] to [3], wherein the content of the component (C) in the oil-in-water type emulsion cosmetic is 1 to 20% by mass.

The oil-in-water type emulsion cosmetic according to item [5] above, wherein the content of the component (D) in the oil-in-water type emulsion cosmetic is from 0.01 to 0.4% by mass.

Item [6] the oil-in-water type emulsion cosmetic according to any one of items [1] to [5], wherein nicotinamide and tranexamic acid are used in combination as the component (A).

Item [7] the oil-in-water type emulsion cosmetic according to any one of items [1] to [6], wherein the content mass ratio (A)/[ (B) + (C) ] of the components (A) to (C) is 0.05 or more and lower than 7.

Item [8] the oil-in-water type emulsion cosmetic according to any one of items [1] to [7], wherein the content mass ratio of the components (A) to (D) [ (B) + (C) + (D) ]/(A) is 0.1 or more and 20 or less.

Item [9] the oil-in-water type emulsion cosmetic according to any one of items [1] to [8], which further comprises an ingredient (E): a polyglycerol.

ADVANTAGEOUS EFFECTS OF INVENTION

The oil-in-water emulsion cosmetic of the present invention is excellent not only in the feeling of penetration but also in the moisturizing feeling immediately after application and the persistence of the moisturizing feeling. Further, the oil-in-water type emulsion cosmetic of the present invention does not become sticky after use, and can provide a good feeling of use (user experience).

Detailed Description

Embodiments of the present invention are explained below. The present invention is not limited to the following embodiments. In the present specification, "X to Y" indicating a range includes X and Y and means "X or more and Y or less". Unless otherwise stated, the operations and the measurements of physical properties and the like were carried out under the conditions of room temperature (25 ℃)/relative humidity 40% RH.

(component (A): nicotinamide and/or tranexamic acid)

The nicotinamide (a) used in the present invention is an amide compound of nicotinic acid (vitamin B3/nicotinic acid). Niacinamide is a water-soluble vitamin, is a known substance as one of vitamin B groups, and can be extracted from natural products (rice bran and the like) or synthesized by a known method. Specifically, those included in the japanese pharmacopoeia revised seventeenth time may be used.

Tranexamic acid, which is the component (a) used in the present invention, is one of amino acids represented by the chemical name trans-4- (aminomethyl) cyclohexane-1-carboxylic acid, and may be used as a hemostatic agent in some cases, in addition to the above-mentioned components having a whitening effect or an anti-inflammatory effect on the skin.

The content of the component (a) in the oil-in-water emulsion cosmetic of the present invention is preferably 1% by mass (hereinafter, "mass%" is simply referred to as "%") or more, more preferably 2% or more, and even more preferably 5% or more, from the viewpoint of the effect of the active ingredient or the like. The content of the component (a) is preferably 10% or less, more preferably 8% or less, and still more preferably 7% or less. If the content of the component (a) is less than 1%, satisfactory effects as an active ingredient may not be obtained in some cases; if the content exceeds 10%, the resulting coating composition may have a strong tackiness and poor handling properties.

In the present invention, nicotinamide and tranexamic acid as the components (a) may be used alone or in combination, and from the viewpoint of excellent effects as active ingredients such as skin aging prevention effect and whitening effect, it is preferable to use two kinds in combination. In the component (a), when both nicotinamide and tranexamic acid are used in combination, a preferable range exists in the respective contents. In the present invention, the content of nicotinamide as the component (a) in the oil-in-water emulsion cosmetic is preferably 1% or more, more preferably 2% or more, still more preferably 3% or more, and particularly preferably 4% or more, from the viewpoint of the action as an active ingredient, and the like; further, it is preferably less than 10%, more preferably 7% or less, and further preferably 5% or less from the viewpoint of no sticky feeling or the like in use. The content of tranexamic acid as the component (a) in the oil-in-water emulsion cosmetic is preferably 1% or more, more preferably 1.5% or more, and still more preferably 2% or more, from the viewpoint of the action as an active ingredient, and the like; further, it is preferably less than 10%, more preferably 5% or less, and further preferably 3% or less from the viewpoint of no sticky feeling or the like in use.

(component (B) Silicone oil)

The silicone oil of the component (B) used in the present invention is not particularly limited as long as it is generally used in cosmetics. The properties of the silicone oil are not particularly limited, and from the viewpoint of excellent feeling in use, it is more preferably in a liquid state at 25 ℃. Examples of such silicone oils include: polydimethylsiloxane (also referred to as "dimethylpolysiloxane" or the like), methylphenylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, methylpolytrimethylsiloxane, polyether-modified methylpolysiloxane, oil-modified methylpolysiloxane, polyvinylpyrrolidone-modified methylpolysiloxane, octamethylcyclotetrasiloxane, dodecamethylcyclohexasiloxane, hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, octylpolytrimethylsiloxane, methylphenylpolysiloxane, dimethiconol (Dimethiconol), and the like, and one kind or two or more kinds of these can be suitably selected and used. In the present invention, it is preferable to use methylphenylpolysiloxane and/or polydimethylsiloxane, and it is more preferable to use polydimethylsiloxane because it remarkably exerts the sense of penetration and the persistence of the moisturizing feeling.

The viscosity of the polydimethylsiloxane used in the present invention is not particularly limited, and from the viewpoint of the feeling of penetration, the viscosity at 25 ℃ is preferably 1 to 200mPa · s, and more preferably 2 to 100mPa · s. In addition, the viscosity of the ingredient (B) is measured according to the second method of cosmetic raw material benchmark-viscometry using Brookfield viscometer.

In the oil-in-water type emulsion cosmetic of the present invention, even when the component (B) is contained in an amount of 60% or more based on the total amount of the oil agent contained in the oil-in-water type emulsion cosmetic, the oil-in-water type emulsion cosmetic excellent in non-stickiness, penetration and moisturizing feeling can be obtained. In the system of the present embodiment, the content of the component (B) in the total amount of the oil agent contained in the oil-in-water type emulsion cosmetic is preferably 60% or more. Therefore, the content of the component (B) in the total amount of the oil agent contained in the oil-in-water type emulsion cosmetic is preferably 60% or more, 70% or more, 80% or more, 85% or more, and 90% or more, in this order. The upper limit of the content of the component (B) in the total amount of the oil agent contained in the oil-in-water type emulsion cosmetic is 100%.

As the oil agent other than the component (B), there can be mentioned: hydrocarbon oils such as isododecane, isohexadecane, light isoparaffin, liquid paraffin (liquid paraffin), squalane (squalane), squalene, α -olefin oligomer, polybutene, liquid isoparaffin, heavy liquid isoparaffin, polyisobutylene, and hydrogenated polyisobutylene; fatty acids such as oleic acid and isostearic acid; higher alcohols such as oleyl alcohol, 2-octyldodecanol, 2-decyltetradecanol, isostearyl alcohol and 2-hexyldecanol; fluorine-containing oils such as perfluoropolyether, perfluorodecane and perfluorooctane; lanolin derivatives such as lanolin acetate, isopropyl lanolin fatty acid ester, and lanolin alcohol; ester oils which are liquid at 25 ℃ such as glycerol tri-2-ethylhexanoate, glycerol diisostearate, diglycerol diisostearate, glycerol triisostearate, diglycerol triisostearate, trimethylolpropane triisostearate, diglycerol tetraisostearate, polyglyceryl decaisostearate, isotridecyl isononanoate, pentaerythritol tetra-2-ethylhexanoate, pentaerythritol tetraisostearate, cetyl 2-ethylhexanoate, octyldodecyl oleate, glycerol tri (caprylic/capric) ate, propylene glycol dicaprate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, isocetyl stearate, neopentyl glycol dicaprylate, di-2-ethylhexyl succinate, 2-ethylhexyl p-methoxycinnamate, and salicylic acid; vegetable oils such as olive oil, macadamia nut oil (macadamia nut oil), meadowfoam oil (meadowfoam oil), jojoba oil, avocado oil, castor oil, safflower oil, sunflower oil, rapeseed oil (canola oil), almond oil, rice germ oil, rice bran oil, etc., which are liquid at 25 ℃; pasty oils such as cacao butter, shea butter (shea butter), castor oil, hydrogenated castor oil, hardened coconut oil, vaseline, hydrogenated castor oil monostearate, hydrogenated castor oil monohydroxystearate, cholesteryl hydroxystearate, dipentaerythritol fatty acid ester, N-lauroyl-L-glutamic acid-bis (octyldodecyl/cholesteryl/behenyl), N-lauroyl-L-glutamic acid-bis (octyldodecyl/phytosterol/behenyl), phytosterol macadamia oleate, and dimer dilinoleic acid (phytosterol/isostearyl/cetyl/stearyl/behenyl); paraffin, ceresin, microcrystalline wax, polyethylene wax, fischer-tropsch wax, stearic acid, behenic acid, cetyl palmitate, polyethylene glycol distearate, glyceryl tribehenate, cholesterol, phytosterol (phytosterol), stearyl-modified polysiloxane, hydrogenated oil, vaseline, palm oil, and the like are solid oils at 25 ℃. One or two or more of them may be used.

In the present invention, the content of the total oil agent including the component (B) and the oil agents other than the component (B) is not particularly limited, and the content in the oil-in-water type emulsion cosmetic is preferably 0.2% or more, more preferably 0.5% or more, and further preferably 1% or more, from the viewpoints of non-stickiness, persistence of a moisturizing feeling, and the like. The total content of the oil agent including the component (B) and the oil agent other than the component (B) is preferably 20% or less, more preferably 10% or less, and even more preferably 7% or less in the oil-in-water type emulsion cosmetic from the viewpoint of the feel of penetration, the feel of moisture immediately after application, and the like.

In view of the penetration feeling, the persistence of the moisturizing feeling, and the like, the content of the hydrocarbon oil is preferably very small, and for example, the content of the hydrocarbon oil in the oil-in-water type emulsion cosmetic is preferably less than 1%, more preferably 0.5% or less, and further preferably none (that is, 0%).

The content of the silicone oil as the component (B) in the present invention is not particularly limited, and the content in the oil-in-water type emulsion cosmetic is preferably 0.1% or more, more preferably 0.5% or more, from the viewpoint of the persistence of a moisturizing feeling and the like. The content of the component (B) in the oil-in-water type emulsion cosmetic is preferably 10% or less, more preferably 5% or less, from the viewpoint of reduction in stickiness and a feeling of penetration.

( Component (C): one or more glycerol derivatives selected from the group consisting of (c 1) and (c 2) represented by the following general formula )

The component (C) used in the present invention is one or more glycerol derivatives selected from the components (C1) and (C2) represented by the following general formulae. Wherein the component (c 1) is represented by the general formula (1), and the component (c 2) is represented by the general formula (2).

Gly-[O-t(PO) _l -(EO) _m )-(BO) _n H] ₃ ……(1)

[ in the formula (1), gly is a residue obtained by removing a hydroxyl group from glycerol, PO is an oxypropylene group, EO is an oxyethylene group, l and m are average addition mole numbers of PO and EO, respectively, (l + m) is a value of 1 to 60, the mass ratio (PO/EO) is 1/5 to 5/1, BO is an oxyalkylene group having 4 carbon atoms, and n is an average addition mole number of BO and a value of 0 to 5. ]

[ in the formula (2), R represents- [ CH ] ₂ CH(CH ₃ )O]P, q, r and s each represent an integer of 0 to 20, and p + q + r + s represents an integer of 4 to 20.]

That is, the component (c 1) is obtained by adding propylene oxide (generally referred to as "propylene oxide" or the like) and ethylene oxide (generally referred to as "ethylene oxide" or the like) to glycerin in a total ratio of 3 to 180 molar equivalents relative to glycerin, or further adding an alkylene oxide having 4 carbon atoms (generally referred to as "alkylene oxide" or the like) in a ratio of 0 to 15 molar equivalents relative to glycerin. The glycerol derivative of the component (c 1) can be obtained by synthesizing an adduct of PO and EO at once and then adding an alkylene oxide having 4 carbon atoms in a block form.

The component (c 1) has a mass ratio (PO/EO) of Propylene Oxide (PO) to Ethylene Oxide (EO) of 1/5 to 5/1, and the addition form of propylene oxide and ethylene oxide may be random or block. When the mass ratio (PO/EO) of Propylene Oxide (PO) to Ethylene Oxide (EO) is less than 1/5, the feeling of penetration, the moisturizing feeling immediately after coating, and the persistence of the moisturizing feeling are reduced, and when it exceeds 5/1, the feeling of non-stickiness or the feeling of penetration is reduced.

The average molar number of addition of the Propylene Oxide (PO) and the Ethylene Oxide (EO) in the component (c 1) is preferably in the range of 3 to 180 moles in total, i.e., l + m is 1 to 60, the average molar number of addition of PO and EO is more preferably in the range of 3 to 150 moles in total, i.e., l + m is 1 to 50, and the average molar number of addition of PO and EO is more preferably in the range of 3 to 90 moles in total, i.e., l + m is 1 to 30, from the viewpoint of a permeable feeling, a moisturizing feeling, and the like. When the average addition mole number of PO and EO is less than 3 moles in total, that is, l + m is less than 1, the sticky feeling and the penetration feeling may not be excellent. If the total average molar number of addition is 180 moles, i.e., l + m exceeds 60, the moist feeling and the persistence of the moist feeling may not be excellent immediately after the application.

The average molar number of addition of the Propylene Oxide (PO) in the component (c 1) is preferably in the range of 3 to 90 mol, i.e., l is 1 to 30, and the average molar number of addition of PO is more preferably in the range of 3 to 60, i.e., l is 1 to 20. Within this range, the effects of the present invention, such as no sticky feeling or a feeling of penetration, a moisturizing feeling immediately after application, and a persistence of the moisturizing feeling, can be more preferably exhibited.

The average molar number of addition of the alkylene oxide (BO) having 4 carbon atoms in the component (c 1) is preferably in the range of 0 to 15 mol, that is, n is 0 to 5, and the average molar number of addition of BO is more preferably in the range of 3 to 15 mol, that is, n is 1 to 5. If the average number of moles of BO added exceeds 15 moles, that is, n exceeds 5, the sticky feeling and the penetrating feeling may not be excellent.

In the present invention, when the average molar number of addition of the alkylene oxide (BO) having 4 carbon atoms is 0 mol, that is, n is 0, the average molar number of addition of the Propylene Oxide (PO) and the Ethylene Oxide (EO) is preferably in the range of 90 to 180 mol in total, that is, l + m is 30 to 60, and the average molar number of addition of the PO and the EO is more preferably in the range of 90 to 150 mol in total, that is, l + m is 30 to 50. When the average number of moles of BO added is 1 to 5 moles, i.e., n is 1 to 5, the average number of moles of PO and EO added is preferably 3 to 90 moles in total, i.e., l + m is 1 to 30, and the average number of moles of PO and EO added is more preferably 3 to 60 moles in total, i.e., l + m is 1 to 20. The content within the above range is preferable because the effects of the present invention, such as no sticky feeling or penetration feeling, and a moist feeling immediately after application and a long-lasting moist feeling, can be more effectively exhibited.

Examples of the alkylene oxide having 4 carbon atoms as the component (c 1) include 1, 2-epoxybutane, 2, 3-epoxybutane and tetramethylene oxide (tetrahydrofuran). Among these, 1, 2-epoxybutane is preferable from the viewpoints of ease of obtaining, ease of reaction control, and the like.

As the component (c 1), specifically, a polyoxybutylene polyoxyethylene polyoxypropylene glycerin ether (3 BO) (8 EO) (5 PO) in which the average addition mole number of (BO) is 8, an polyoxybutylene polyoxyethylene polyoxypropylene glycerin ether (3 BO) (8 EO) (5 PO) in which the average addition mole number of (BO) is 3, and a polyoxyethylenepolyoxypropylene glycerin ether (24 EO) (24 PO) in which the average addition mole number of (PO) is 24 are preferable because the penetration feeling, the moisturizing feeling immediately after application, and the persistence of the moisturizing feeling are improved. Examples of such commercially available products include: polyoxyethylene (24) polyoxypropylene (24) glyceryl ether (trade name: NIKKOL SG-G2424, manufactured by Nikkol chemical Co., ltd.), polyoxybutylene (3) polyoxyethylene (8) polyoxypropylene (5) glyceryl ether (trade name: WILBRIDE S-753, manufactured by Nichio Co., ltd.), and the like. One or two or more of them may be used.

The component (c 2) of the present invention can be obtained by adding propylene oxide to diglycerin by a conventional method. Here, the number of addition moles of propylene oxide in one molecule of diglycerol is preferably 4 to 20 moles, more preferably 5 to 15 moles, even more preferably 8 to 10 moles, from the viewpoint of no stickiness, a penetrating feeling, a moisturizing feeling, and the like.

As the component (c 2), specifically, polyoxypropylene diglycerol ether (9 PO) having an average number of moles of addition of (PO) of 9 is preferable because the penetration feeling, the moisturizing feeling immediately after application, and the persistence of the moisturizing feeling are improved. Examples of such commercially available products include polyoxypropylene (9) diglycerol ether (trade name: SY-DP9, manufactured by Saka chemical industries, ltd.). One or two or more of them may be used.

When an alkylene oxide is added to glycerin or diglycerin as the glycerin derivatives of the component (c 1) and the component (c 2), an addition reaction is performed using a base catalyst, a related transfer catalyst, a lewis acid catalyst, or the like. In general, a base catalyst such as potassium hydroxide is preferably used.

In the present invention, the component (C) may contain one or two or more selected from the component (C1) and the component (C2). In the present invention, the component (C) is more preferably the component (C1) from the viewpoint of more favorably exerting effects such as the persistence of a moisturizing sensation. In the present invention, the meaning that the component (C) contains two components may mean that two components (C1), two components (C2), and a combination of the component (C1) and the component (C2) are used.

The content of the component (C) in the present invention is not particularly limited, and is preferably 1% or more, more preferably 2% or more, and even more preferably 3% or more in the oil-in-water type emulsion cosmetic, from the viewpoint of no stickiness or no penetrating sensation. The content of the component (C) is more preferably 20% or less, and from the viewpoint of the moisture retention feeling immediately after application, the moisture retention feeling, the persistence of the moisture retention feeling, and the like, the content is preferably 15% or less, and more preferably 10% or less.

The content mass ratio of the components (a) to (C)/[ (B) + (C) ] is not particularly limited, but is preferably 0.05 or more, more preferably 0.1 or more, and from the viewpoint of no sticky feeling or no penetrating feeling, more preferably 0.2 or more, and particularly preferably 0.3 or more. From the viewpoint of the moisturizing feel immediately after application, the persistence of the moisturizing feel, and the like, the content mass ratio (a)/[ (B) + (C) ] is preferably lower than 7, more preferably 5 or less, still more preferably 3.5 or less, and particularly preferably 2.5 or less.

(component (D): amphiphilic Polymer)

The amphiphilic polymer as component (D) used in the present invention is a polymer compound which can be used alone without a surfactant in combination or added in a small amount even when a surfactant is used in combination, and can be used as a stable oil-in-water emulsion dispersion in cosmetics and compositions. For example, mention may be made of: acrylic acid-alkyl methacrylate copolymer, ammonium acryloyldimethyltaurate/vinylpyrrolidone copolymer, ammonium acryloyldimethyltaurate/beheneth-25 methacrylate copolymer, hydroxyethyl acrylate/sodium acryloyldimethyltaurate copolymer, sodium acrylate/sodium acryloyldimethyltaurate copolymer, PEG-240/decyltetradecyltetradecylpolyether-20/hexamethyldiisocyanate copolymer, hydrophobized hydroxypropylcellulose, hydroxypropylstarch phosphoric acid, 2-methacryloyloxyphosphorylcholine-butyl methacrylate copolymer, and at least one of these components may be used.

Among these, from the viewpoint of sustainability of a penetration sensation and a moisturizing sensation, and the like, an acrylic acid-alkyl methacrylate copolymer, an acryloyldimethyltaurate/vinylpyrrolidone copolymer, an acryloyldimethyltaurate/beheneth-25 methacrylate copolymer, a hydroxyethyl acrylate/acryloyldimethyltaurate copolymer, a sodium acrylate/acryloyldimethyltaurate copolymer, are preferably used as the component (D), and an acrylic acid-alkyl methacrylate copolymer, an acryloyldimethyltaurate/beheneth-25 methacrylate copolymer, a sodium acrylate/acryloyldimethyltaurate copolymer, and further an acrylic acid-alkyl methacrylate copolymer, an acryloyldimethyltaurate/beheneth-25 methacrylate copolymer, and a sodium acrylate/acryloyldimethyltaurate copolymer are preferably used. As commercially available products, aristoflex HMB (manufactured by Clariant Japan Co., ltd.), PEMULEN TR-1 (manufactured by Lubizol Advanced Materials) and the like can be used, and one or two or more of them can be used.

The content of the component (D) in the present invention is not particularly limited, but the content in the oil-in-water type emulsion cosmetic is preferably 0.01% or more, and more preferably 0.05% or more from the viewpoint of the persistence of the moisturizing feeling and the like. The content of the component (D) is preferably 0.6% or less, more preferably 0.4% or less, and even more preferably 0.2% or less, from the viewpoint of a feeling of penetration and the like.

In addition, in the oil-in-water type emulsion cosmetic containing the component (a) of the present invention, it is important to combine the components (B) to (D) from the viewpoint of well exerting the effects of the present invention. In the present invention, the content mass ratio [ (B) + (C) + (D) ]/(a) of the components (a) to (D) is not particularly limited, but is preferably 0.1 or more, more preferably 0.2 or more, further preferably 0.3 or more, and particularly preferably 0.4 or more, from the viewpoint of a moisturizing feeling immediately after application, persistence of a moisturizing feeling, and the like. The content mass ratio [ (B) + (C) + (D) ]/(a) is preferably 20 or less, more preferably 10 or less from the viewpoint of no sticky feeling, no penetrating feeling, and the like, and is more preferably 5 or less, particularly preferably 3 or less from the viewpoint of moisturizing feeling immediately after application, durability of the moisturizing feeling, and the like.

(component (E): polyglycerin)

By further using the polyglycerin as the component (E), the oil-in-water emulsion cosmetic of the present invention can provide an oil-in-water emulsion cosmetic excellent in the penetration feeling, the moisturizing feeling immediately after application, and the persistence of the moisturizing feeling. In the present invention, the polyglycerin means glycerin having a dimer or more, and examples thereof include: one or two or more of diglycerol, triglycerol which is a trimer of glycerin, tetraglycerin which is a tetramer of glycerin, hexaglycerin which is a hexamer of glycerin, decaglycerin which is a decamer of glycerin, and icosagen which is an icosamer of glycerin can be used. In the present invention, one or two or more selected from the group consisting of diglycerin and triglycerol are preferable from the viewpoint of no sticky feeling, and triglycerol is more preferable from the viewpoint of a penetrating feeling, a moisturizing feeling immediately after application, and a persistence of a moisturizing feeling. Examples of such commercially available products include diglycerin 801 and PGL-S (manufactured by Kazakh chemical industries, ltd.).

The content of the component (E) in the present invention is not particularly limited, but the content in the oil-in-water type emulsion cosmetic is preferably 0.1% or more, more preferably 0.5% or more, and even more preferably 1% or more, from the viewpoints of a penetration feeling, a moisturizing feeling immediately after application, and a persistence of the moisturizing feeling. The content of the component (E) is preferably 5% or less, more preferably 3% or less, and even more preferably 2% or less, from the viewpoint of no stickiness and a feeling of bleeding.

In the present invention, the content mass ratio (C)/(E) of the component (C) and the component (E) is not particularly limited, and is preferably 1 or more, more preferably 2 or more, and further preferably 3 or more, from the viewpoint of the moisture retention feeling immediately after application, the persistence of the moisture retention feeling, and the like. The content mass ratio (C)/(E) is preferably 15 or less, more preferably 10 or less, and still more preferably 7 or less, from the viewpoint of no stickiness and no feeling of penetration.

The present invention is an oil-in-water type emulsion cosmetic and is an oil-in-water type emulsion cosmetic containing water. Here, water is not particularly limited as long as it can be used as a dispersion medium for an oil agent, and is water that can be generally used in cosmetics, and examples thereof include purified water, distilled water, ion-exchanged water, tap water, hot spring water, and deep ocean water. The content of water is not particularly limited, and the content in the oil-in-water type emulsion cosmetic is preferably 10% to 80%, more preferably 20% to 70%.

Further, the oil-in-water type emulsion cosmetic of the present invention may contain a surfactant in a range not to impair the effects of the present invention. The surfactant can improve the stability of the oil-in-water type emulsion cosmetic, and can be formulated without any particular limitation as long as it is generally used in cosmetics, quasi drugs (quasi drugs), pharmaceuticals, and the like. However, from the viewpoint of improving stability and considering usability such as non-stickiness and a feeling of penetration and the durability of a moisturizing feeling, it is preferably 3% or less, and more preferably 1% or less.

The oil-in-water type emulsion cosmetic of the present invention may contain, in addition to the essential components, components that are generally used in cosmetics, quasi drugs, pharmaceuticals, and the like, within a range that does not impair the effects of the present invention. That is, the oil-in-water type emulsion cosmetic of the present invention may suitably contain, for example, a surfactant, a higher alcohol, a water-soluble polymer other than the component (D), a lower alcohol, a polyhydric alcohol, a film-forming agent, a powder, a resin, a perfume, a deodorant, a refreshing agent, an ultraviolet absorber, a pH adjuster, a preservative, a chelating agent, a plant extract, an amino acid, a vitamin, a cosmetic ingredient, and the like, as long as the effects of the present invention are not impaired.

The oil-in-water type emulsion cosmetic of the present invention can be used as a cosmetic for various purposes. Examples of the cosmetic include lotions, milky lotions, creams, beauty liquids, massage cosmetics, mask cosmetics, hand creams, body lotions, body creams, makeup cosmetics, makeup base cosmetics, eye creams, and sunscreen creams. Among them, preferred are skin care cosmetics such as lotions, milky lotions, creams, beauty liquids, massage cosmetics, mask cosmetics, hand creams, skin lotions, and skin creams. The method of use includes: a method of using the fiber with hands, fingers, or cotton, a method of using the fiber by immersing the fiber in a nonwoven fabric, or the like, and the like.

The properties of the oil-in-water emulsion cosmetic of the present invention can be implemented in various forms such as a liquid form, a gel form, an emulsion form, a cream form, a semisolid form, and a solid form; among them, from the viewpoint of obtaining the effect of the present invention, it is preferably made into a liquid-to-gel state. Here, the liquid-gel state means a state having a viscosity of 30000mPa · s or less, preferably 20000mPa · s or less, and more preferably 15000mPa · s or less, as measured at 25 ℃ with a brookfield rotational viscometer.

(production method)

The method for producing the oil-in-water type emulsion cosmetic of the present invention is not particularly limited, and the oil-in-water type emulsion cosmetic can be produced by a generally known method, and specifically, a dispersion emulsification method, a phase inversion temperature emulsification method, and the like can be mentioned. As the manufacturing equipment, any DISPERSION-emulsification equipment having a usual DISPERSION (DISPERSION) function may be used as long as it is. For example, the following method can be employed: an oil-in-water type emulsion cosmetic is obtained by adding an oil phase obtained by dissolving the component (B) by heating to an aqueous phase obtained by mixing and dissolving the components (C) to (E) with a part of purified water, emulsifying and mixing the mixture by a dispersing device, cooling the mixture, and adding the component (A) dissolved in the purified water.

Examples

The effects of the present invention will be described below by referring to examples and comparative examples. The technical scope of the present invention is not limited to the following examples. Unless otherwise specified, each operation was carried out at room temperature (25 ℃).

Examples 1 to 24 and comparative examples 1 to 9: oil-in-water type emulsion cosmetic

Oil-in-water emulsion cosmetics having the formulations shown in tables 1 to 3 below were prepared, and the non-sticky feeling, the penetrating feeling, the moisturizing feeling immediately after application, and the persistence of the moisturizing feeling were evaluated according to the following methods. The results are also shown in tables 1 to 3.

[ TABLE 1] (mass%)

[ TABLE 2] (Mass%)

[ TABLE 3] (mass%)

Note 1 CARNATION (SONNEBORN)

Note 2 WILBRIDE S-753D (manufactured by Nichii oil Co., ltd.)

Note 3 NIKKOL SG-G2424 (manufactured by sunlight chemical Co., ltd.)

Note 4 SY-DP9 (manufactured by sakaben pharmaceutical industries, ltd.)

Note 5 LIPONIC EG-1 (manufactured by Lipo Chemicals Co., ltd.)

Note 6 PEMULEN TR-1 (manufactured by Lubrizol Advanced Materials Co., ltd.)

Note 7 Aristoflex HMB (manufactured by Clariant Japan K.K.)

Note 16 PGL-S (manufactured by Kazaben Kagaku Kogyo Co., ltd.)

(production method)

A: the components (6) to (19) and a part of the component (20) are uniformly mixed and dissolved.

B: the components (3) to (5) are uniformly mixed and dissolved.

C: the oil-in-water type emulsified cosmetic is obtained by adding B to A, emulsifying, adding the component (1) and the component (2) dissolved in the remaining component (20), and mixing.

(evaluation method 1)

Women aged 20 to 40 years were trained for functional assessment, and 10 panelists were selected for assessment on a certain basis. The forearm of the panelist used 2g of each sample, and the non-stickiness feeling, the penetration feeling, and the moisturizing feeling immediately after application were evaluated in four grades according to the following absolute evaluations and evaluated. For each sample, the average value was calculated from the total scores of all panelists, and the judgment was performed based on the following four-level judgment criteria.

(A: no sticky feeling)

< Absolute evaluation criterion >

(score): (evaluation)

And 4, dividing: no stickiness was felt

And 3, dividing: hardly felt sticky

And 2, dividing: slightly felt to be tacky

1 minute: feel sticky

< four-level decision reference >

(judgment): (average score of scores)

Very good: over 3.25 minutes: is very good

O: more than 2.5 points and 3.25 points below: good effect

And (delta): more than 1.75 points and 2.5 points below: slight defect of

X: 1.75 points are as follows: failure of the product

(B: feeling of penetration)

< Absolute evaluation criterion >

(score): (evaluation)

And 4, dividing: feeling of penetration into the skin

And 3, dividing: slightly felt to have a feeling of penetration into the skin

And 2, dividing: hardly any sensation of penetration into the skin

1 minute: no sensation of skin penetration

< four-level decision reference >

(judgment): (average score of scores)

Excellent: over 3.25 minutes: is very good

O: more than 2.5 points and 3.25 points below: is good

And (delta): more than 1.75 points and 2.5 points below: slight defect of

X: 1.75 points are as follows: failure of the product

(C: feeling of moisture immediately after application)

< Absolute evaluation criterion >

(score): (evaluation)

And 4, dividing: feel a sense of moisture retention

And 3, dividing: slightly feel a moisturizing feeling

And 2, dividing: hardly felt the feeling of moisture retention

1 minute: no feeling of moisture retention

< four-level decision reference >

(judgment): (average score of score)

Very good: over 3.25 minutes: is very good

O: more than 2.5 points and 3.25 points below: good effect

And (delta): more than 1.75 points and 2.5 points below: slight defect

X: 1.75 points are as follows: failure of the product

(evaluation method 2)

Women aged 20 to 40 years were trained for sexual evaluation, and 10 panelists were selected for evaluation on a certain basis. The panelists applied 2g of each sample to the forearm and allowed to penetrate, evaluated the persistence of the moisturizing sensation 5 hours after application on a four-point scale according to the following absolute evaluation and scored. The average value of the total scores of the panelists was calculated for each sample, and the judgment was performed based on the following four-level judgment criteria.

(D: persistence of moisturizing feeling)

< Absolute evaluation criterion >

(score): (evaluation)

And 4, dividing: feel moisturized

And 3, dividing: slightly feel a moisturizing feeling

And 2, dividing: hardly felt the feeling of moisture retention

1 minute: no feeling of moisture retention

< four-level decision reference >

(judgment): (average score of scores)

Excellent: over 3.25 minutes: is very good

O: more than 2.5 points and 3.25 points below: good effect

And (delta): more than 1.75 points and 2.5 points below: slight defect of

X: 1.75 points are as follows: failure to meet the requirements

From the results of tables 1 to 3, it is understood that the oil-in-water type emulsion cosmetics of examples 1 to 24 of the present invention have reduced sticky feeling, had a penetrating feeling, and are excellent in moisturizing feeling immediately after application and in persistence of moisturizing feeling, as compared with the oil-in-water type emulsion cosmetics of comparative examples 1 to 9.

On the other hand, comparative examples 1 and 2, which did not contain the silicone oil as the component (B) or used the liquid paraffin as the hydrocarbon oil, were inferior in terms of non-sticky feeling and moisture-retentive feeling persistence, and further, were unsatisfactory in terms of the penetrating feeling and the moisture-retentive feeling immediately after application. Furthermore, in comparative examples 3 to 6 in which a polyoxyalkylene adduct glycerin derivative represented by a specific formula containing no component (C), or a polyoxyalkylene adduct glycerin derivative containing no polyoxypropylene skeleton, glycerin, or polypropylene glycol containing no glycerin skeleton was used, all results such as the persistence of a feeling of penetration and a feeling of moisture retention were unsatisfactory. In comparative examples 7 to 9, which contained no amphiphilic polymer as component (D) or used a water-soluble polymer or a water-soluble polysaccharide having no amphiphilicity, they were unsatisfactory in terms of non-stickiness, non-penetration, and moist feeling immediately after application, in addition to the persistence of the penetrating feeling.

Example 25: beauty treatment liquid (oil-in-water type)

Note 8KF-6018 (manufactured by shin-Yue chemical Co., ltd.)

Note 9KF-6019 (manufactured by shin-Yue chemical Co., ltd.)

(production method)

A: the components (1) to (15) were uniformly mixed.

B: after mixing and dissolving components (16) to (26), they were added to the above-mentioned a at room temperature to emulsify.

C: and filling the B into a container to obtain the cosmetic liquid.

The cosmetic liquid of example 25 thus obtained was free from sticky feeling, penetrated feeling, and moist feeling immediately after application, and was excellent in the persistence of moist feeling.

Further, the content mass ratio of the components (A) to (C)/[ (B) + (C) ] was 0.9.

Example 26: emulsion (oil-in-water type)

Note 10LANDOOL-MAS (manufactured by Japan Kogyo Co., ltd.)

Note 11 Riceteol Ester (manufactured by Takara Rice refining Co., ltd.)

(production method)

A: the components (1) to (15) were uniformly mixed.

B: the components (16) to (25) were heated to about 70 ℃, uniformly mixed and dissolved, added to the solution A, emulsified, and then cooled.

C: and filling the B into a container to obtain the emulsion.

The emulsion (oil-in-water type) of example 26 obtained in the above manner was excellent in the persistence of the moist feel, the non-sticky feel, the penetrating feel, and the moist feel immediately after application.

Further, the content mass ratio of the components (A) to (C)/[ (B) + (C) ] was 0.5.

Example 27: sunscreen (oil in water type)

Note 12Nikkor resin S-10 (manufactured by Nikkor Kabushiki Kaisha)

Note 13 sea Cholesterol (Kairei Marine Cholesterol) (manufactured by Nippon aquatic Co., ltd.)

Note 14Castride MS (manufactured by NATIONAL Meisong Co., ltd.)

(production method)

A: the components (1) to (7) were uniformly dissolved and mixed at 75 ℃.

B: the components (8) to (12) were uniformly dissolved and mixed at 70 ℃.

C: the components (13) to (22) were dissolved and mixed uniformly at 80 ℃.

D: b and C were added to A and emulsified at 70 ℃.

E: adding the mixture of ingredients (23) to (30) to D, and cooling to 40 deg.C to obtain sunscreen agent (oil-in-water type).

The sunscreen agent (oil-in-water type) of example 27 obtained in the above manner was excellent in the non-stickiness, the penetration feeling, the moisturizing feeling immediately after application, and the durability of the moisturizing feeling.

Further, the content mass ratio of the components (A) to (C)/[ (B) + (C) ] was 2.5.

Example 28: cosmetic water (oil-in-water type)

Note 15HS oil G-AP (manufactured by NATIONAL MEISONONE, inc. [ NATIONAL Mimatsu Co., ltd. ])

(production method)

A: the components (1) to (5) were uniformly dissolved and mixed at 75 ℃.

B: a part of component (24) was added while keeping A at 75 ℃ and emulsified at 70 ℃.

C: after cooling B to room temperature, high-pressure treatment (treatment pressure 200) was carried out using a Microfluidizer.

D: the components (6) to (23) and the remaining part of the component (24) were dissolved and mixed uniformly at room temperature.

E: and adding C into D to obtain the toning lotion.

The cosmetic water (oil-in-water type) of example 28 obtained in the above manner was excellent in the persistence of the moist feel, the non-sticky feel, the penetrating feel, and the moist feel immediately after application.

The content mass ratio of the components (a) to (C)/[ (B) + (C) ] was 4.4.

Claims

1. An oil-in-water type emulsion cosmetic comprising the following components (A) to (D),

component (B): a silicone oil;

component (C): one or two or more glycerin derivatives selected from the group consisting of component (c 1) and component (c 2) represented by the following general formula, wherein the component (c 1) is represented by general formula (1) and the component (c 2) is represented by general formula (2),

Gly-[O-{(PO) _l -(EO) _m )-(BO) _n H] ₃ ......(1)

in the formula (1), gly represents a residue obtained by removing hydroxyl group from glycerol, PO represents oxypropylene group, EO represents oxyethylene group, l and m represent average addition mole numbers of PO and EO, respectively, (l + m) represents a value of 1 to 60, the mass ratio PO/EO represents 1/5 to 5/1, BO represents oxyalkylene group having 4 carbon atoms, n represents an average addition mole number of BO and represents a value of 0 to 5,

in the formula (2), R represents- [ CH ] ₂ CH(CH ₃ )O]P, q, r, s each represents an integer of 0 to 20, and p + q + r + s represents an integer of 4 to 20;

component (D): an amphiphilic polymer.

2. The oil-in-water type emulsion cosmetic as claimed in claim 1, wherein the component (D) is at least one selected from the group consisting of acrylic acid-alkyl methacrylate copolymer, acryloyldimethyltaurate/vinylpyrrolidone copolymer, acryloyldimethyltaurate/beheneth-25 methacrylate copolymer, hydroxyethyl acrylate/acryloyldimethyltaurate copolymer, sodium acrylate/acryloyldimethyltaurate copolymer, polyethylene glycol-240/decyltetradecylpolyether-20/hexamethyldiisocyanate copolymer, hydrophobized hydroxypropylcellulose, and hydroxypropylamylophosphoric acid.

3. The oil-in-water type emulsion cosmetic according to claim 1 or 2,

the content of the component (B) is 60% by mass or more relative to the total amount of oil agents contained in the oil-in-water type emulsion cosmetic.

4. The oil-in-water type emulsion cosmetic according to any one of claims 1 to 3, wherein the content of the component (C) in the oil-in-water type emulsion cosmetic is 1 to 20% by mass.

5. The oil-in-water type emulsion cosmetic according to any one of claims 1 to 4, wherein the content of the component (D) in the oil-in-water type emulsion cosmetic is from 0.01% by mass to 0.4% by mass.

6. The oil-in-water type emulsion cosmetic according to any one of claims 1 to 5, wherein nicotinamide and tranexamic acid are used in combination as the component (A).

7. The oil-in-water type emulsion cosmetic according to any one of claims 1 to 6, wherein the content mass ratio (A)/[ (B) + (C) ] of the ingredients (A) to (C) is 0.05 or more and less than 7.

8. The oil-in-water type emulsion cosmetic according to any one of claims 1 to 7, wherein the content mass ratio [ (B) + (C) + (D) ]/(A) of the components (A) to (D) is 0.1 or more and 20 or less.

9. The oil-in-water type emulsion cosmetic as claimed in any one of claims 1 to 8, which further comprises an ingredient (E): polyglycerol.