JP2023077575A - Water-in-oil emulsion cosmetic - Google Patents

Abstract

To provide a water-in-oil emulsion cosmetic that gives a good feeling of use when applied to skin, does not cause separation or oil floating during storage, and is stable with little change in viscosity.SOLUTION: A water-in-oil emulsion cosmetic comprises a specific silicone surfactant and an oil selected from ester oil, silicone oil and hydrocarbon oil. Such a water-in-oil emulsion cosmetic suppresses stickiness due to glycerol, diglycerol, glyceryl ascorbate or a salt thereof and also offers high stability.SELECTED DRAWING: None

Description

TECHNICAL FIELD The present invention relates to a water-in-oil emulsified cosmetic that has excellent storage stability and, when applied to the skin, exhibits an excellent feeling of use with reduced stickiness. More specifically, it relates to a water-in-oil emulsified cosmetic containing a specific silicone surfactant, a specific oil agent, and glycerin, diglycerin, glyceryl ascorbic acid or a salt thereof.

Water-in-oil emulsified cosmetics are prepared using an oily component, an aqueous component, and an emulsifier, but conventional emulsifiers used in water-in-oil emulsified cosmetics tend to cause stickiness when applied to the skin. Therefore, a water-in-oil emulsified cosmetic with an excellent feeling in use has been demanded. Furthermore, compared to oil-in-water emulsified cosmetics, water-in-oil emulsified cosmetics have the disadvantage that the disperse phase (aqueous phase) is more likely to coalesce and separate over time. There is a problem that it is difficult to obtain cosmetics, and a solution has been sought.

In addition, polyhydric alcohols such as glycerin are blended in many cosmetics because they impart a moisturizing effect to the skin, but are known to impart stickiness and stickiness as the blending amount increases. Therefore, it has been difficult to achieve both a moisturizing effect on the skin and suppression of sticky feeling.

The present invention solves the problems of the prior art, and provides a water-in-oil emulsified cosmetic that does not cause separation or oil floating during storage, has excellent storage stability, and suppresses stickiness when applied to the skin. An object of the present invention is to provide a neutral water type emulsified cosmetic.

As a result of intensive studies by the present inventors in view of the above-mentioned circumstances, component (A): silicone surfactant, component (B): an oil agent selected from the group consisting of ester oil, silicone oil and hydrocarbon oil, component ( C): A water-in-oil emulsified cosmetic containing glycerin, diglycerin, glyceryl ascorbic acid or a salt thereof has an excellent feeling of use with reduced stickiness when applied to the skin, and is storage stable. The present inventors have completed the present invention by discovering that it is a cosmetic having excellent properties.

The first aspect of the present invention is a water-in-oil emulsified cosmetic,
(A) one or more selected from silicone surfactants,
(B) one or more selected from ester oils, silicone oils and hydrocarbon oils;
(C) It is characterized by containing one or more selected from glycerin, diglycerin, glyceryl ascorbic acid and salts thereof.

The second aspect of the present invention is the water-in-oil emulsified cosmetic of the first aspect of the present invention, wherein the component (C) contains bisglyceryl ascorbic acid. Bisglyceryl ascorbic acid, particularly 2,3-di-O-glyceryl ascorbic acid, is preferable as component (C) from the viewpoint of a high feel when blended in cosmetics, and it is preferable to include these. The second aspect of the present invention corresponds to this preferred mode.

The third aspect of the present invention is the water-in-oil type emulsified cosmetic of the first or second aspect of the present invention, wherein component (A) is polyglyceryl-3 polydimethylsiloxyethyl dimethicone, lauryl polyglyceryl-3 polydimethylsiloxyethyl It is characterized by being selected from dimethicone, lauryl PEG-9 polydimethylsiloxyethyl dimethicone. By selecting the above silicone surfactant as the component (A), it is possible to provide a water-in-oil emulsified cosmetic with improved storage stability, which is preferable. The third aspect of the present invention corresponds to this preferred mode.

The fourth aspect of the present invention is the water-in-oil type emulsified cosmetic of the first to third aspects of the present invention, wherein the component (B) is tri(caprylic/capric)glyceryl, decamethylcyclopentasiloxane, dimethicone, It is characterized by being selected from the group consisting of squalane and mineral oil. The water-in-oil type emulsified cosmetic composition of the present invention exhibits a more excellent feel during use by selecting the component (B) oil agent from the above, which is preferable. The fourth aspect of the present invention corresponds to this preferred mode.

The present invention comprises component (A): a silicone surfactant, component (B): an oil agent selected from ester oil, silicone oil and hydrocarbon oil, and component (C): glycerin, diglycerin, glyceryl ascorbic acid or a salt thereof. It is a water-in-oil emulsified cosmetic containing the cosmetic, which exhibits excellent stability with little change in viscosity during storage, and exhibits excellent feeling of use when applied to the skin.
Furthermore, even if the water-in-oil emulsified cosmetic of the present invention contains one or more selected from the group consisting of glyceryl ascorbic acid or a salt thereof as the component (C), the stability is not impaired, A water-in-oil type emulsified cosmetic that imparts preferable skin care effects when applied to the skin, such as moisturizing effect, antioxidant effect, melanin production suppressing effect, and collagen production promoting effect, and further suppresses stickiness.

Component (A) constituting the water-in-oil emulsified cosmetic composition of the present invention: silicone surfactant Component (B): oil selected from the group consisting of ester oil, silicone oil and hydrocarbon oil Component (C): Glycerin, diglycerin, glyceryl ascorbic acid and salts thereof, and the form of the water-in-oil emulsified cosmetic of the present invention will be specifically described below.

[Component (A): silicone surfactant]
The component (A) silicone surfactant contained in the cosmetic of the present invention is not particularly limited as long as it is commonly used in cosmetics, and includes polyether-modified silicone, polyglycerin-modified silicone, partially crosslinked type polyether-modified silicone, partially cross-linked polyglycerin-modified silicone, and the like.

Examples of the silicone surfactant include PEG-11 methyl ether dimethicone, PEG/PPG-20/22 butyl ether dimethicone, PEG-9 dimethicone, PEG-3 dimethicone, PEG-9 methyl ether dimethicone, PEG-10 dimethicone, PEG -32 methyl ether dimethicone, cetyl PEG/PPG-10/1 dimethicone, PEG-9 polydimethylsiloxyethyl dimethicone, lauryl PEG-9 polydimethylsiloxyethyl dimethicone, methylpolysiloxane cetylmethylpolysiloxane poly(oxyethylene oxy Polyether-modified silicone such as propylene) methylpolysiloxane copolymer, poly(oxyethylene/oxypropylene) methylpolysiloxane copolymer, polyglyceryl-3 disiloxane dimethicone, polyglyceryl-3 polydimethylsiloxyethyl dimethicone, lauryl polyglyceryl-3 Polyglycerin-modified silicone such as polydimethylsiloxyethyl dimethicone, (dimethicone/(PEG-10/15)) crosspolymer, (PEG-15/lauryl dimethicone) crosspolymer, (PEG-15/lauryl polydimethylsiloxyethyl dimethicone) cross Partially crosslinked polyether-modified silicone such as polymer, (dimethicone / polyglycerin-3) crosspolymer, (lauryl dimethicone / polyglycerin-3) crosspolymer, (polyglyceryl-3 / lauryl polydimethylsiloxyethyl dimethicone) crosspolymer, etc. Partially crosslinked polyglycerin-modified silicone and the like can be mentioned.

Among component (A), silicone surfactants having an HLB (Hydrophile-Lipophile Balance) value calculated using the Griffin method of 10 or less are preferable, and 5 or less are more preferable.

Among them, polyglycerin-modified silicone or polyether-modified silicone is preferable from the viewpoint of small change in viscosity during storage. More preferred is lauryl PEG-9 polydimethylsiloxyethyl dimethicone. The component (A) silicone surfactant may be used alone or in combination of two or more.

Commercially available silicone surfactants include KF-6104 (polyglyceryl-3 polydimethylsiloxyethyl dimethicone), KF-6105 (lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone), KF- 6038 (lauryl PEG-9 polydimethylsiloxyethyl dimethicone) and the like.

The content of the component (A) is not particularly limited, but is preferably 1.0 to 5.0% by mass, and preferably 2.0 to It is more preferably 3.0% by mass. If the content is less than this range, the storage stability of the emulsified cosmetic may deteriorate, and if the content is more than this range, sufficient effects corresponding to the increase in content may not be obtained.

[Component (B): Oil]
The component (B) oil agent contained in the water-in-oil emulsified cosmetic composition of the present invention is selected from ester oils, silicone oils and hydrocarbon oils. can be used without any particular limitation.

Examples of the ester oils include diisopropyl adipate, diisobutyl adipate, 2-hexyldecyl adipate, di-2-heptylundecyl adipate, alkyl glycol monoisostearate, isocetyl isostearate, isostearyl isostearate, isopropyl isostearate, Propylene glycol isostearate, trimethylolpropane triisostearate, ethylene glycol di-2-ethylhexanoate, cetyl 2-ethylhexanoate, neopentyl glycol di-2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate , erythrityl triethylhexanoate, 2-ethylhexyl hydroxystearate, hexa(hydroxystearate/stearate/rosin acid) dipentaerythrityl, tetra(hydroxystearate/isostearate) dipentaerythrityl, hexahydroxystearate dipentaerythrityl, (ethyl Hexanoic acid/stearic acid/adipic acid) glyceryl, pentaerythritol tetra-2-ethylhexanoate, pentaerythrityl tetraoctanoate, pentaerythritol tetraisostearate, cetyl 2-ethylhexanoate, oleyl oleate, octyldodecyl oleate , ethyl oleate, decyl oleate, neopentyl glycol dicaprate, triethyl citrate, 2-ethylhexyl succinate, isocetyl stearate, butyl stearate, diisopropyl sebacate, di-2-ethylhexyl sebacate, cetyl lactate, myristyl lactate , isopropyl palmitate, cetyl palmitate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, 2-heptylundecyl palmitate, dipentaerythritol fatty acid ester, isononyl isononanoate, isotridecyl isononanoate, isopropyl myristate, palmitic acid Isopropyl, 2-octyldodecyl myristate, 2-hexyldecyl myristate, myristyl myristate, octyldodecyl myristate, hexyldecyl dimethyloctanoate, ethyl laurate, hexyl laurate, 2-ethylhexyl methoxycinnamate, dimalate Isostearyl, hexa(behenate/benzoate/ethylhexanoate) dipentaerythrityl, alkyl benzoate (C12-15), glyceryl triisooctanoate, glyceryl triisostearate, glyceryl (diisostearate/hydrogenated rosinate), diisostearate Glyceryl, diglyceryl triisostearate, diglyceryl tetraisostearate, decaglyceryl decaisostearate, glyceryl triisopalmitate, glyceryl trimyristate, diglyceryl myristate isostearate, tritridecyl trimellitate, tri(caprylic/capric acid) ) glyceryl, glyceryl tri-2-ethylhexanoate, tri (caprylic acid / capric acid / myristate / stearic acid) glyceryl, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, N-lauroyl-L-glutamic acid di ( phytostearyl/2-octyldodecyl) and the like.

Examples of the silicone oil include methylpolysiloxane, dimethylpolysiloxane (dimethicone), dimethylsilicone oils such as highly polymerized methylpolysiloxane, methylphenylsilicone oils such as methylphenylpolysiloxane, methylcyclopolysiloxane, octamethylcyclotetrasiloxane, Cyclic silicone oils such as decamethylcyclopentasiloxane and dodecamethylcyclohexasiloxane, aminopropylmethylsiloxane/dimethylsiloxane copolymer, aminoethylaminopropylsiloxane/dimethylsiloxane copolymer, aminoethylaminopropylmethylsiloxane/dimethylsiloxane copolymer Amino-modified silicone, carboxy-modified silicone, alkoxy-modified silicone, fatty acid-modified silicone, alcohol-modified silicone, aliphatic alcohol-modified silicone, epoxy-modified silicone, fluorine-modified silicone, alkyl-modified silicone, methyl hydrogen poly Siloxane, dimethiconol and the like can be mentioned.

Examples of the hydrocarbon oils include (C13-15) alkanes, (C15-19) alkanes, (C18-21) alkanes, (C21-28) alkanes, mineral oils, liquid paraffins, light isoparaffins, light liquid isoparaffins, heavy Liquid isoparaffin, α-olefin oligomer, squalane, synthetic squalane, vegetable squalane, hydrogenated polyisobutene, hydrogenated (tetradecenyl/methylpentadecene), isododecane, polybutene, polyisobutene, isohexadecane, (C13, 14) isoparaffin, petroleum jelly, etc. mentioned.

Among the component (B), tri(caprylic/capric)glyceryl, decamethylcyclopentasiloxane, dimethicone, mineral oil, and squalane are preferable from the viewpoints of good skin compatibility and non-stickiness when applied to the skin. can be used singly or in combination of two or more.

The content of component (B) is not particularly limited, but is preferably 10 to 30% by mass, more preferably 15 to 25% by mass, based on the total mass of the emulsified cosmetic. If the content is less than this range, the storage stability of the emulsified cosmetic may decrease, and if it exceeds this range, the feeling of use such as increased stickiness may be affected.

[Component (C): one or more selected from the group consisting of glycerin, diglycerin, glyceryl ascorbic acid, and salts thereof]
(glycerin, diglycerin)
Glycerin and diglycerin as component (C) contained in the water-in-oil emulsified cosmetic composition of the present invention are not particularly limited as long as they are components commonly used in cosmetics, and commercially available products can be used. Specifically, concentrated glycerin for cosmetics manufactured by Sakamoto Yakuhin Kogyo Co., Ltd., diglycerin 801, and the like can be mentioned.

The content of glycerin and diglycerin is preferably 5 to 50% by mass, more preferably 10 to 30% by mass, based on the total mass of the cosmetic. If the content is less than this range, the moisturizing effect may not be sufficient when applied to the skin.

(glyceryl ascorbic acid or its salt)
The component (C) glyceryl ascorbic acid contained in the water-in-oil emulsified cosmetic composition of the present invention is ascorbic acid obtained by adding one or more glyceryl groups to the 2-, 3-, 5- or 6-position of ascorbic acid. It is a derivative, and specific examples include the compounds shown below. In the following examples, glyceryl means a group represented by HOCH ₂ -CH(OH)-CH ₂ - or HOCH ₂ -CH(CH ₂ OH)-, and alkyl means a methyl group or an ethyl group. , propyl, isopropyl, butyl, pentyl, hexyl, ethylhexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl group, octadecyl group, nonadecyl group, eicosyl group, behenyl group, benzyl group, etc., and alkenyl means vinyl group, allyl group, butenyl group, isobutenyl group, crotyl group, octenyl group, decenyl group, dodecenyl group, etc. , Acyl means formyl group, acetyl group, propionyl group, butyryl group, pentanoyl group, hexanoyl group, heptanoyl group, octanoyl group, nonyl group, decanoyl group, undecanoyl group, dodecanoyl group, tetradecanoyl group, hexadecanoyl group , eicosanoyl group, hexadecenoyl group, octadecenoyl group, octadecatrienoyl group, icosatetraenoyl group, isooctanoyl group, isopalmitoyl group, isostearoyl group, 2-propylpentanoyl group, 2-butylhexanoyl group, 2-pentyl A heptanoyl group or the like is shown.

Examples of glyceryl ascorbic acid include 2-O-glyceryl ascorbic acid, 3-O-glyceryl ascorbic acid, 5-O-glyceryl ascorbic acid, 6-O-glyceryl ascorbic acid, and 2,3-di-O-glyceryl ascorbic acid. , 2,3,5,6-tetra-O-glyceryl ascorbic acid, 2-O-diglyceryl ascorbic acid, 3-O-diglyceryl ascorbic acid, 2,3-di-O-diglyceryl ascorbic acid, 2- O-Glyceryl-3-O-Alkyl Ascorbic Acid, 2-O-Alkyl-3-O-Glyceryl Ascorbic Acid, 2-O-Alkyl Glyceryl Ascorbic Acid, 3-O-Alkyl Glyceryl Ascorbic Acid, 2-O-Glyceryl- 5-O-acylascorbic acid, 2-O-glyceryl-6-O-acylascorbic acid, 2-O-glyceryl-3-O-alkenyl ascorbic acid, 2-O-alkenyl-3-O-glyceryl ascorbic acid, 2-O-alkenylglyceryl ascorbic acid, 3-O-alkenylglyceryl ascorbic acid and the like.

Among the above examples, glyceryl ascorbic acid, which is industrially readily available and capable of sufficiently exhibiting the effects of the present invention, includes 2-O-glyceryl ascorbic acid, 3-O-glyceryl ascorbic acid, and bisglyceryl. Ascorbic acid is preferred, and bisglyceryl ascorbic acid such as 2,3-di-O-glyceryl ascorbic acid is more preferred.

Salts of glyceryl ascorbic acid include, for example, metal salts such as potassium salts and sodium salts, triethanolamine salts, 2-amino-2-methyl-1,3-propanediol salts, 2-amino-2-methyl- and ammonium salts such as 1-propanol salts.

A commercial item can also be used as glyceryl ascorbic acid. For example, Amitose DGA manufactured by Seiwa Kasei Co., Ltd. can be used as 2,3-di-O-glyceryl ascorbic acid.

In the water-in-oil emulsified cosmetic of the present invention, one selected from the group consisting of glycerin, diglycerin, glyceryl ascorbic acid and salts thereof may be used alone, or two or more may be used in combination. .

The content of glyceryl ascorbic acid or a salt thereof is preferably 0.1 to 30% by mass, more preferably 0.5 to 25% by mass, based on the total mass of the cosmetic. When the content of glyceryl ascorbic acid or a salt thereof is less than this range, it becomes difficult to obtain the effect of imparting preferable skin care effects. On the other hand, even if it exceeds this range, an effect commensurate with the increase in the blending amount cannot be obtained.

The water-in-oil emulsified cosmetic composition of the present invention may contain water in addition to the components (A) to (C). Furthermore, as long as the effects and stability of the water-in-oil type emulsified cosmetic are not impaired, other ingredients such as those commonly used in cosmetics may be added depending on the application. can.

For example, surfactants other than component (A), oily components other than component (B), moisturizing agents, high molecular compounds such as thickeners, whitening agents, texture improvers, chemicals, ultraviolet absorbers, proteins, protein hydrolysers Ingredients commonly used in cosmetics such as decomposition products or derivatives thereof, amino acids or derivatives thereof, antioxidants, sequestering agents, pH adjusters, preservatives, pigments, coloring agents, fragrances, etc., They can be blended as appropriate.

Surfactants other than component (A) include polyglyceryl-2 dipolyhydroxystearate, PEG-30 dipolyhydroxystearate, polyglyceryl-6 polyricinoleate, polyglyceryl-6 laurate, and polyglyceryl-2 isostearate. Alkyl glucosides such as polyglycerin fatty acid ester, decyl glucoside, (caprylyl/capryl) glucoside, cetearyl glucoside, arachidyl glucoside, (C12-20) alkyl glucoside, coconut oil alkyl glucoside, myristyl glucoside, heptyl glucoside, lauryl glucoside, sorbitan Monolaurate, sorbitan fatty acid esters such as sorbitan monopalmitate, glycerin fatty acid esters and alkylene oxide adducts thereof, polyoxyalkylene alkyl ethers, polyoxyalkylene fatty acid esters, polyoxyalkylene alkylphenols, polyoxyethylene sorbitol fatty acid esters, poly Oxyethylene sorbitan fatty acid ester, polyoxyethylene alkylphenyl formaldehyde condensate, polyoxyethylene sterol and its derivatives, polyoxyethylene lanolin and its derivatives, polyoxyethylene beeswax derivatives, sucrose fatty acid esters, polyoxyethylene hydrogenated castor oil, Nonionic surfactants such as polyoxyethylene castor oil, higher fatty acid soaps, alkyl sulfates, alkyl phosphates, polyoxyethylene alkyl ether sulfates, polyoxyethylene alkylphenyl ether sulfates, alkyl ether phosphates, Alkyl ether carboxylates, acyl methyl taurine salts, N-acyl-N-methyl-β-alanine salts, N-acyl glycine salts, N-acyl glutamate salts, polyoxyethylene alkyl carboxylates, alkylphenyl ether sulfonates , alkylsulfosuccinic acid and its salts, N-acylsarcosine and its salts, polyoxyethylene coconut oil fatty acid monoethanolamide sulfate, lauroyl oat amino acid and its salts, cocoyl apple amino acids and its salts, anionic surfactants, mono Alkylamine salts such as alkylamine salts, dialkylamine salts and trialkylamine salts, fatty acid amide alkylamines such as stearamidoethyldiethylamine and stearamidopropyldimethylamine, monoalkyl quaternary ammonium salts, dialkyl quaternary ammonium salts, Alkyl quaternary ammonium salts such as trialkyl-type quaternary ammonium salts and benzalkonium-type quaternary ammonium salts, cyclic quaternary ammonium salts such as alkylpyridinium salts, cationic surfactants such as benzethonium chloride, alkyldimethylaminoacetic acid betaine, alkylamidoaminoacetic acid betaine, fatty acid amidopropyldimethylaminoacetic acid betaine, 2-alkyl-N-carboxy-N-hydroxyimidazolinium betaine, alkylglycinate, carboxymethylglycinate, N-acylaminoethyl-N-2 - Amphoteric surfactants such as hydroxyethylglycine salts, alkylaminopropionates, alkyliminodipropionates, and alkylhydroxysulfobetaines.

Examples of oily components other than component (B) include vegetable oils, waxes, higher fatty acids, higher alcohols and their ethers, oils and fats, and the like.

Vegetable oils include macadamia nut oil, eucalyptus oil, palm oil, avocado oil, safflower oil, olive oil, palm oil, palm kernel oil, kukui nut oil, shea butter, cocoa butter, almond oil, sunflower oil, rose hips. Oil, olive squalane, camellia oil, kiwifruit seed oil, camellia oil, apricot kernel oil, sesame oil, soybean oil, jojoba oil, castor oil, hazelnut oil, meadowfoam oil, peppermint oil, argan oil, carrot oil, lavender oil, sugar Squalane, damask rose flower wax, centifolia rose flower wax, Jasminum flower wax, camellia oil, hydrogenated products thereof (e.g., hydrogenated castor oil, hydrogenated jojoba oil, hydrogenated palm oil, hydrogenated avocado oil, hydrogenated large bean oil, etc.).

Waxes include carnauba wax, candelilla wax, beeswax, rice bran wax, shellac wax, whale wax, lanolin, lanolin acetate, isopropyl lanolin fatty acid, lanolin alcohol, sunflower seed wax and the like.

Higher fatty acids include isostearic acid, oleic acid, lauric acid, myristic acid, palmitic acid, stearic acid and the like.

Higher alcohols and their ethers include cetyl alcohol, stearyl alcohol, behenyl alcohol, cetearyl alcohol, myristyl alcohol, octanol, lauryl alcohol, oleyl alcohol, isostearyl alcohol, octyldodecanol, hexyldecanol, arachidyl alcohol, (C14-22) alcohol, (C20-22) alcohol, coconut alcohol, glyceryl monocetyl ether, decyltetradecanol, batyl alcohol and the like.

Fats and oils include theobroma grandiflorum seed fat, mango seed fat, cacao butter, palm oil, palm kernel oil, coconut oil, shea butter, Shoreathenoptera fat, African mango tree kernel fat, avocado butter, sal soju seed fat, Astropotassium Murumuru Fat, Astropotassium Murumuru Seed Fat, Astropotassium Tsukuma Seed Fat, Garcinia Indica Seed Fat, Tricilia Emetica Seed Fat, Basiarachifolia Seed Fat, Garcinia Indica Seed Fat, Hydrogenated Cocoa Butter, (Macadamia Seed Oil/Hydrogenated macadamia seed oil) esters, milk fat and the like.

Moisturizers include, for example, ethoxydiglycol, propylene glycol, dipropylene glycol, maltitol, sorbitol, 1,3-butylene glycol, sodium lactate, polyethylene glycol, sodium pyrrolidonecarboxylate, sodium hyaluronate and the like.

Polymer compounds such as thickeners are not particularly limited as long as they are commonly used in cosmetics, and acrylic thickeners, methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxymethyl cellulose, hydroxypropyl cellulose, hydroxypropyl Cellulosic thickeners such as methylcellulose, carboxymethylcellulose, carboxyethylcellulose, stearoxyhydroxypropylmethylcellulose, nitrocellulose, sodium cellulose sulfate, xanthan gum, hydroxypropylxanthan gum, gum arabic, tragacanth gum, cabrogum, guar gum, caesalpinia spinosa gum, dextran, etc. natural thickener, polyvinyl alcohol, polymeric dimethylpolysiloxane, pectin, agar, quince seed, starch, algecolloid, succinoglucan, collagen, gelatin, casein, albumin, carboxymethyl starch, sodium alginate, polyvinyl Thickeners such as methyl ether, sodium polyacrylate, polyethylene acrylate, cationic polymers, and other high molecular compounds are included.

Examples of the acrylic thickener include polyacrylamide, (hydroxyethyl acrylate/Na acryloyldimethyltaurate) copolymer, (Na acrylate/Na acryloyldimethyltaurate) copolymer, (acrylamide/ammonium acrylate) copolymer, ( Na acrylate/acryloyldimethyltaurine/dimethylacrylamide) crosspolymer, polyacrylate-13, polyacrylate crosspolymer-6, (acrylamidopropyltrimonium chloride/acrylates) copolymer, (acryloyldimethyltaurate ammonium/vinylpyrrolidone) copolymer, (acryloyl Ammonium dimethyl taurate/beheneth-25 methacrylate) crosspolymer, (acryloyl dimethyl taurate ammonium/steareth-25 methacrylate) crosspolymer, (acrylates/alkyl acrylate (C10-30)) crosspolymer, (acrylates/methacrylic acid) Steareth-20) copolymer, (acrylates/beheneth-25 methacrylate) copolymer, (acrylates/steareth-20 itaconate) copolymer, steareth-10 allyl ether/acrylates copolymer, carboxyvinyl polymer, and the like.

Whitening agents include ascorbic acid derivatives such as ellagic acid, chamomile extract, licorice extract, lucinol, rosemary extract, arbutin, tranexamic acid, 4-methoxysalicylic acid potassium salt, ascorbic acid, ascorbic acid glucoside, and magnesium ascorbyl phosphate. mentioned.

Texture improvers include amylopectin (amylose), acylated amino acids or salts thereof, polymethyl methacrylate, boron nitride, silica, alumina, aluminum hydroxide, metallic soap, silicone powder, polymethyl methacrylate, dimethyl silylation. silica and the like.

Agents may include anti-irritants or anti-inflammatory agents. Anti-roughness agents or anti-inflammatory agents include dipotassium glycyrrhizinate, stearyl glycyrrhetinate, methyl salicylate, pyridoxine hydrochloride, allantoin, sea salt, sorghum extract, aloe extract, gardenia extract, chamomile extract, licorice extract, sapindactyl extract, and Chinese ginseng extract. , Scutellaria root extract, Tencha extract, Loquat extract, Ginkgo biloba extract, Hypericum extract, Yarrow extract, Safflower extract, Spruce extract, Salvia extract, White birch extract, Chimp extract, Tonin extract, Neil extract, Althea extract, Arnica extract, Carrot extract, Peony extract, Cnidium Extract, Gentian Extract, Cordyceps Extract, Phellodendron Extract, Inchinkou Extract, Gennoshoko Extract, Peach Leaf Extract, Kumazasa Extract, Yokuinin Extract, Horse Chestnut Extract, Hawthorn Extract, Coptis Extract, Ganoderma Extract, Calendula officinalis Extract, Peppermint Extract, Comfrey Extracts, butcher bloom extracts, malva extracts, cornflower extracts, prickly pear extracts, etc., as well as hair growth agents, acne agents, dandruff and itch agents, armpit odor prevention agents, and the like.

UV absorbers include 2-hydroxy-4-methoxybenzophenone, sodium 2-hydroxy-4-methoxybenzophenone-5-sulfonate, sodium dihydroxydimethoxybenzophenone-sulfonate, 2,4-dihydroxybenzophenone, tetrahydroxybenzophenone, and the like. Benzophenone derivatives, para-aminobenzoic acid, ethyl para-aminobenzoate, glyceryl para-aminobenzoate, amyl para-dimethylaminobenzoate, para-aminobenzoic acid derivatives such as octyl para-dimethylaminobenzoate, ethyl para-methoxycinnamate, isopropyl para-methoxycinnamate, para-aminobenzoate Methoxycinnamic acid derivatives such as 2-ethylhexyl methoxycinnamate (ethylhexyl methoxycinnamate), sodium para-methoxycinnamate, potassium para-methoxycinnamate, glyceryl di-para-methoxycinnamate mono-2-ethylhexanoate, octyl salicylate, Phenyl salicylate, homomenthyl salicylate, dipropylene glycol salicylate, ethylene glycol salicylate, myristyl salicylate, salicylic acid derivatives such as methyl salicylate, urocanic acid, ethyl urocanate, 4-tert-butyl-4'-methoxydibenzoylmethane (t-butylmethoxy) dibenzoylmethane), 2-(2′-hydroxy-5′-methylphenyl)benzotriazole, methyl anthranilate, octocrylene (2-cyano-3,3-diphenylprop-2-enoate-2-ethylhexyl), 2 -(4-diethylamino-2-hydroxybenzoyl)hexyl benzoate (diethylaminohydroxybenzoylhexyl benzoate), ethylhexyl triazone and bisethylhexyloxyphenol methoxyphenyl triazine, etc., and microcapsules encapsulating the above ultraviolet absorbers can also be mentioned.

Proteins, protein hydrolysates or derivatives thereof include proteins such as whey protein, casein protein, silk protein, wheat protein, rice protein, pea protein, soybean protein, sesame protein, collagen, keratin, conchiolin, marine collagen, etc. Acylated, silylated, cationized, glycerylated, and alkyl-esterified derivatives of these hydrolysates or protein hydrolysates are included.

Amino acids or derivatives thereof include glycine, alanine, valine, leucine, isoleucine, serine, threonine, phenylalanine, arginine, lysine, asparagine, aspartic acid, glutamine, glutamic acid, cystine, cysteine, methionine, tryptophan, proline, histidine, taurine, and the like. and salts thereof, and acylated, silylated, cationized, alkyl-esterified, and glycerylated derivatives thereof.

Antioxidants include sodium pyrosulfite, vitamin E or derivatives thereof, tannin, BHT (butylhydroxytoluene) and the like.

Sequestering agents include edetate sodium salt, phosphoric acid, citric acid, phytic acid, etidronic acid, glutamic acid diacetic acid sodium salt, and the like.

Examples of pH adjusters include lactic acid, citric acid, glycolic acid, succinic acid, tartaric acid, malic acid, gluconic acid, sodium hydroxide, potassium hydroxide, potassium carbonate, sodium hydrogencarbonate and ammonium hydrogencarbonate.

Preservatives include 1,2-alkanediol such as 1,2-pentanediol and 1,2-hexanediol, paraoxybenzoic acid alkyl esters such as methylparaben and propylparaben, glyceryl monoalkyl ethers such as ethylhexylglycerin, and benzoic acid. , sodium benzoate, sorbic acid, potassium sorbate, phenoxyethanol, levulinic acid, benzyl alcohol and the like.

The above components that are commonly used in cosmetics can be used singly or in combination of two or more.

The water-in-oil emulsified cosmetic of the present invention can be used in the form of liquid, emulsion, paste, cream, gel, and the like. Among them, milky lotion and cream are preferred. In addition, the water-in-oil emulsified cosmetic composition of the present invention can be widely applied to various cosmetics such as beauty essence, milky lotion, makeup base, emollient cream, cleansing cream, hand cream, body cream, foundation, It can be applied as a sunscreen milky lotion, a sunscreen cream, and the like. Among them, it can be preferably applied as emollient cream, hand cream and foundation.

EXAMPLES Next, the present invention will be specifically described with reference to examples, but the present invention is not limited to the examples. The numerical values shown in the tables of the examples are all percent by mass with respect to the total mass of the cosmetic.

Examples 1 to 6: Moisturizing cream Components (A) and (B) listed in Table 1 were mixed, components (C) and other components were added while stirring with a disper (1400 rpm), and further added with a disper (3000 rpm). A moisturizing cream was prepared by stirring for 5 minutes. Furthermore, stability and stickiness were evaluated according to the methods and evaluation criteria shown below. These results are shown in Table 1.

[Stability]
The viscosity immediately after preparation and the viscosity of the moisturizing cream stored in a constant temperature bath at 50° C. for 8 weeks were measured with a Brookfield LVT viscometer, and the stability was evaluated according to the following evaluation criteria.

◎: The viscosity change was less than ± 15% immediately after preparation ○: The viscosity change was ± 15% or more and less than ± 25% immediately after preparation △: The viscosity change was ± It was 25% or more.
×: The oil phase and the water phase separated

[Evaluation of stickiness suppression]
30 mg of each of the moisturizing creams prepared in Examples 1 to 6 and the aqueous solution of the control example was applied to an area of 1 cm×5 cm on the inside of the forearm, spread for 2 minutes, and then dried for 2 minutes. After drying, using a dynamic friction coefficient measuring device (trade name: Trinity Lab Handy-Lub Tester Type: TL701), a load of 100 g was applied to the applied area, and then the adhesive strength (stress) was measured when the adhesive was lifted upward. An aqueous solution of a control example for each example was obtained by adding water to 100% by mass with respect to the component (C) of the example, and the adhesion of the example to the control example was evaluated according to the following criteria. bottom.

◎: Adhesion of the moisturizing cream was lower than that of the control, and the change in adhesion was 50% or more. ○: Adhesion of the moisturizing cream was better than that of the control. was low and the change in adhesion was less than 50%.
x: Adhesion of moisturizing cream is higher than that of control.

In Table 1,
* 1 is KF-6104 manufactured by Shin-Etsu Chemical Co., Ltd.,
* 2 is KF-6105 manufactured by Shin-Etsu Chemical Co., Ltd.
* 3 is KF-6038 manufactured by Shin-Etsu Chemical Co., Ltd.
* 4 is Amitose DGA manufactured by Seiwa Kasei Co., Ltd. (trade name, containing 50% by weight of bisglyceryl ascorbic acid, 25% by weight of glycerin, and 25% by weight of water);
*5 is euxyl PE 9010 from Ashland.

It is clear from the results in Table 1 that Examples 1 to 6, in which components (A) to (C) were blended, were excellent in storage stability at 50°C. Glycerin, diglycerin, and glyceryl ascorbic acid impart moisturizing properties to cosmetics when blended into them. The moisturizing creams of Examples 1 to 6 have excellent moisturizing properties, and this excellent moisturizing property is considered to be obtained by blending glycerin, diglycerin, and glyceryl ascorbic acid as component (C).

In addition, the results in Table 1 show that Examples 1 to 6 are also excellent in the effect of suppressing stickiness when applied to the skin. From this result, when the components (A) and (B) are combined, the problem of stickiness is suppressed even when the component (C) glycerin, diglycerin, or glyceryl ascorbic acid is blended, and storage is possible. It can be said that the stability is also excellent.

Claims (4)

A water-in-oil emulsified cosmetic comprising the following components (A) to (C).
(A) one or more selected from silicone surfactants (B) one or more selected from ester oils, silicone oils and hydrocarbon oils (C) glycerin, diglycerin, glyceryl ascorbic acid or its 1 or 2 or more selected from salt 2. The water-in-oil emulsified cosmetic according to claim 1, wherein the component (C) is bisglyceryl ascorbic acid. 3. The method of claim 1 or claim 2, wherein said component (A) is selected from polyglyceryl-3 polydimethylsiloxyethyl dimethicone, lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone, and lauryl PEG-9 polydimethylsiloxyethyl dimethicone. The water-in-oil emulsified cosmetic composition according to any one of the above items. 4. Any one of claims 1 to 3, wherein said component (B) is selected from the group consisting of caprylic/capric triglyceryl, decamethylcyclopentasiloxane, dimethicone, mineral oil and squalane. The water-in-oil emulsified cosmetic composition according to Item 1.