JP2020193193A - Oil-in-water type emulsion composition - Google Patents

Abstract

To provide an oil-in-water type emulsion composition excellent in water repellency, film feeling and storage stability and good in usability using only a raw material substantially derived natural products.SOLUTION: There is provided an oil-in-water type emulsion composition using only a raw material substantially derived natural products, which comprises 0.1 to 3 wt.% of a natural surfactant and 15 to 55 wt.% of an oil agent, wherein the oil agent contains a mixture of the following components (A), (B) and (C), the mixture is liquid at 25°C, the amount of the component (A) is 10 to 98 wt.% based on the total weight of the oil agent: (A) a hydrocarbon, (B) a wax ester and (C) a triglyceride.SELECTED DRAWING: Figure 1

Description

The present invention relates to an oil-in-water emulsified composition.

Causes of skin troubles include dry skin, pollen, air pollution, allergies, external stimuli, and contact dermatitis caused by contact with clothing. Skin that is susceptible to external stimuli has a problem that the barrier function is lowered, so that moisture goes out to the outside, causing the skin to become dry and dry. Further, in recent years, the number of people with sensitive skin is rapidly increasing, and there is a demand for naturally derived cosmetics that do not use any synthetic components such as silicone and are as mild as possible.

Therefore, in order to solve these problems, for example, in Patent Document 1, an aqueous solution containing silicic acid and mineral spring water is mixed with a cosmetic oil-based raw material and a cosmetic aqueous raw material, and then mixed to form a surfactant and a synthetic material. Cosmetic creams emulsified without macromolecules are disclosed.

JP-A-2017-145233

The cosmetic cream emulsified without the surfactant and synthetic polymer described in Patent Document 1 did not have sufficient water repellency and film feeling to prevent dryness and dryness of the skin.

Therefore, it is an object of the present invention to provide an oil-in-water emulsified composition which is excellent in water repellency, film feeling, and storage stability by using substantially only naturally derived raw materials.
Another object of the present invention is to provide an oil-in-water emulsified composition having good usability.

３．前記天然系界面活性剤が、サーファクチン、アルスロファクチン、イチュリン、マンノシルエリスリトールリピッド、ソホロリピッド、トレハロースリピッド、ラムノリピッド、スピクリスポール酸、エマルザン、及びこれらの塩からなる群から選択される１又は２以上である、１又は２に記載の水中油型乳化組成物。
４．前記天然系界面活性剤が、下記式（Ｉ）で表される構造を有する、１〜３のいずれかに記載の水中油型乳化組成物。

（式（Ｉ）中、Ｘは、ロイシン、イソロイシン及びバリンからなる群より選択されるアミノ酸の残基を示し、Ｒ^ａは炭素数９〜１８のアルキル基を示し、Ｍ^＋は、それぞれ独立に、アルカリ金属イオン又は第四級アンモニウムイオンである。）
５．２５℃における粘度が０．１〜１５０ｍＰａ・ｓである１〜４のいずれかに記載の水中油型乳化組成物。
６．１〜５のいずれかに記載の水中油型乳化組成物を含む化粧料。
７．剤形がスプレーである６に記載の化粧料。 According to the present invention, the following oil-in-water emulsified compositions and the like can be provided.
1. 1. An oil-in-water emulsified composition that uses substantially only naturally derived raw materials.
The oil-in-water emulsified composition contains 0.1 to 3% by weight of a natural surfactant and 15 to 55% by weight of an oil agent.
The oil agent contains a mixture of the following components (A), (B) and (C), and the mixture is liquid at 25 ° C.
An oil-in-water emulsified composition in which the amount of the component (A) is 10 to 98% by weight based on the total weight of the oil agent.
(A) Hydrocarbon (B) Wax ester (C) Triglyceride 2. In the figure below, the oil agent shows the weight ratio of the component (A), the component (B), and the component (C).
The weight ratio of (A): (B): (C) is 4.5: 4.5: 36 with respect to the first coordinate K.
The weight ratio of (A): (B): (C) is 4.5: 36: 4.5 with respect to the second coordinate L.
1. The water according to 1, which has a composition within a range surrounded by a third coordinate M in which the weight ratio of (A): (B): (C) is 36: 4.5: 4.5. Oil-type emulsified composition.

3. 3. The natural surfactant is one or more selected from the group consisting of surfactin, arslovactin, itulin, mannosylerythritol lipid, sophorolipid, trehalose lipid, ramnolipid, spicrysporic acid, emulsan, and salts thereof. The oil-in-water emulsified composition according to 1 or 2.
4. The oil-in-water emulsified composition according to any one of 1 to 3, wherein the natural surfactant has a structure represented by the following formula (I).

(In the formula (I), X is leucine, represents a residue of an amino acid selected from the group consisting of isoleucine and valine, R ^a represents an alkyl group having 9 to 18 carbon atoms, M ⁺ is independently , Alkyl metal ion or quaternary ammonium ion.)
5. The oil-in-water emulsified composition according to any one of 1 to 4, having a viscosity at 25 ° C. of 0.1 to 150 mPa · s.
A cosmetic comprising the oil-in-water emulsified composition according to any one of 6.1 to 5.
7. The cosmetic according to 6, wherein the dosage form is a spray.

According to the present invention, it is possible to provide an oil-in-water emulsified composition which is excellent in water repellency, film feeling, and storage stability by using substantially only naturally derived raw materials. Further, the present invention can provide an oil-in-water emulsified composition having good usability.

FIG. 1 is a triangular graph showing the weight ratio of the component (A), the component (B), and the component (C).

Hereinafter, embodiments of the present invention will be described.
[Oil-in-water emulsified composition]
The oil-in-water emulsified composition of the present invention is an oil-in-water emulsified composition using substantially only naturally-derived raw materials, and contains 0.1 to 3% by weight of a natural surfactant and an oil agent. The oil contains 15 to 55% by weight, and the oil agent is (A) hydrocarbon (hereinafter, also referred to as "(A) component" or simply "(A)"), (B) wax ester (hereinafter, "(B) component"). "Or simply" (B) ") and (C) triglyceride (hereinafter, also referred to as" (C) component "or simply" (C) "), and the mixture is 25. An oil-in-water emulsified composition which is liquid at ° C. and the amount of the component (A) is 10 to 98% by weight based on the total weight of the oil agent.
Thereby, it is possible to provide an oil-in-water emulsified composition which is excellent in water repellency, film feeling and storage stability and exhibits good usability.

In the present invention, the “naturally-derived raw material” means that the naturally-derived index defined by the following formula is 1 for the raw material. In the formula below, "naturally occurring" is defined in ISO16128 (ISO16128-1: 2016 and ISO16128-2: 2017) and refers to those derived from plants, animals, algae, microorganisms, fungi and minerals. Further, in the following calculation formula, the “surplus” refers to a raw material that is later reused or removed.
(When the molecular weight of the raw material is clear)
Natural origin index = (Molecular weight of naturally derived part) / (Molecular weight of the whole molecule)
(When the molecular weight of the raw material is unknown)
Natural derived index _{= (m n -m ne) /} (m a -m ae)
m _n: natural origin of raw materials Weight m _ne: natural origin of raw materials of the weight of excess m _a: weight of all of raw materials m _ae: surplus of the weight of all of raw materials

In the present invention, it is preferable to use only substantially naturally derived raw materials from the viewpoint of reducing irritation to the skin. Here, "substantially using only naturally-derived raw materials" means that the amount of the raw materials other than the naturally-derived raw materials in the oil-in-water emulsified composition is preferably 5% by weight or less, more preferably 3% by weight. % Or less, more preferably 1% by weight or less, and it is most preferable not to use raw materials other than naturally derived raw materials.

The oil-in-water emulsified composition of the present invention contains 0.1 to 3% by weight, preferably 0.1 to 2.5% by weight, more preferably 0.1 to 1.5% by weight of a natural surfactant. .. Thereby, a stable oil-in-water emulsified composition can be obtained.

The natural surfactant used in the present invention is not particularly limited, but is a lipopeptide compound such as surfactin, arslovactin, and iturin; a glycolipid such as mannosylerythritol lipid, sophorolipid, trehalose lipid, ramnolipid; Examples thereof include one or more selected from the group consisting of fatty acids such as acids; polymers such as emalzan; and salts thereof. These may be used alone or in combination of two or more at any ratio.

As the natural surfactant, lipopeptide compounds such as surfactin, arslovactin, itulin, or salts thereof are preferable, surfactin or a salt thereof is more preferable, and it has a structure represented by the following formula (I). Those are particularly preferable. As a result, high emulsifying ability can be obtained even at a low concentration.

（式（Ｉ）中、Ｘは、ロイシン、イソロイシン及びバリンからなる群より選択されるアミノ酸の残基を示し、Ｒ^ａは炭素数９〜１８のアルキル基を示し、Ｍ^＋は、それぞれ独立に、アルカリ金属イオン又は第四級アンモニウムイオンである。）

(In the formula (I), X is leucine, represents a residue of an amino acid selected from the group consisting of isoleucine and valine, R ^a represents an alkyl group having 9 to 18 carbon atoms, M ⁺ is independently , Alkyl metal ion or quaternary ammonium ion.)

X in formula (I) is preferably a leucine residue. More preferably, it is a residue of L-leucine.

Alkyl groups ^{R a} in formula (I) may be either linear or branched, number of carbon atoms is preferably from 9 to 18, more preferably from 10 to 16, 12 to 14 is more preferable.
The R ^a, is not particularly limited, n- nonyl, 6-methyl-octyl group, 7-methyl-octyl group, n- decyl group, 8-methylnonyl group, n- undecyl group, 9-methyldecyl group, n- dodecyl Examples thereof include a 10-methylundecyl group, an n-tridecyl group, an 11-methyldodecyl group, an n-tetradecyl group, an n-pentadecyl group, an n-hexadecyl group, an n-heptadecyl group and an n-octadecyl group. In particular, a 10-methylundecyl group is preferable.

Examples of the M ⁺ alkali metal ion or quaternary ammonium ion of the formula (I) include lithium ion, sodium ion, potassium ion, tetramethylammonium ion, tetraethylammonium ion, pyridinium ion and the like. In particular, sodium ions are preferred.

The oil-in-water emulsified composition of the present invention contains an oil agent in an amount of 15 to 55% by weight, preferably 20 to 55% by weight, and more preferably 35 to 55% by weight. As a result, an oil-in-water emulsified composition having excellent water repellency, film feeling, and storage stability can be obtained.

The oil agent used in the present invention contains a mixture of (A) hydrocarbon, (B) wax ester and (C) triglyceride. The mixture of the component (A), the component (B), and the component (C) is liquid at 25 ° C. Thereby, an oil-in-water emulsified composition having excellent water repellency, film feeling, and storage stability can be obtained.

In the present invention, a liquid at 25 ° C. may have fluidity at 25 ° C.

In the oil agent used in the present invention, the amount of the component (A) in the oil agent is 10 to 98% by weight, preferably 15 to 90% by weight. As a result, even when body fluid such as sweat adheres, the film feeling can be felt more.

The oil agent used in the present invention is shown in FIG. 1 showing the weight ratio of the component (A), the component (B), and the component (C).
The weight ratio of (A): (B): (C) is 4.5: 4.5: 36 with respect to the first coordinate K.
The weight ratio of (A): (B): (C) is 4.5: 36: 4.5 with respect to the second coordinate L.
It is preferable that the composition has a composition within the range surrounded by the third coordinate M in which the weight ratio of (A): (B): (C) is 36: 4.5: 4.5.
The oil agent used in the present invention is shown in FIG. 1 showing the weight ratio of the component (A), the component (B), and the component (C).
The fourth coordinate P in which the weight ratio of (A): (B): (C) is 7.5: 7.5: 30 and
The weight ratio of (A): (B): (C) is 7.5: 30: 7.5, and the fifth coordinate Q and
It is more preferable to have a composition within the range surrounded by the sixth coordinate R in which the weight ratio of (A): (B): (C) is 30: 7.5: 7.5.
Thereby, an oil-in-water emulsified composition having a further excellent film feeling can be obtained.

The component (A) used in the present invention is preferably one or two selected from saturated hydrocarbons having 9 to 40 carbon atoms, more preferably 10 to 35 carbon atoms, and further preferably 12 to 30 carbon atoms. That is all.

The component (A) is not particularly limited, and examples thereof include 1 or 2 or more selected from the group consisting of olive squalane, sugar squalane, hemi squalane, tetradecane, and dodecane. In particular, olive squalane, sugar squalane, and tetradecane are preferable. These may be used alone or in combination of two or more at any ratio.

（式（ＩＩ）中、Ｒ^１及びＲ^２は、それぞれ独立に、炭素数８〜３２の飽和又は不飽和の炭化水素基である。） The component (B) used in the present invention preferably has a structure represented by the following formula (II).

(In formula (II), R ¹ and R ² are independently saturated or unsaturated hydrocarbon groups having 8 to 32 carbon atoms.)

The saturated or unsaturated hydrocarbon groups of R ¹ and R ² of the formula (II) may be linear or branched, and the number of carbon atoms is preferably 8 to 32, more preferably 10 to 28, and 12 to 24. Is even more preferable.
It is preferable that R ¹ and R ² are independently linear hydrocarbon groups.

The component (B) is not particularly limited, but is myristyl myristate, cetyl myristate, stearyl stearate, oleyl oleate, isostearyl laurate, isostearyl myristate, isostearyl isostearate, jojoba oil, orange raffy oil. , Sunflower seed wax, honey wax, candelilla wax, carnauba wax, rice bran wax, sugar cane wax, minced myristic wax, whale wax, myristic whale oil, cellac, lanolin and montan wax. In particular, jojoba oil and orange roughy oil are more preferable. These may be used alone or in combination of two or more at any ratio.

（式（ＩＩＩ）中、Ｒ^３、Ｒ^４、及びＲ^５は、それぞれ独立に、炭素数８〜２４の飽和又は不飽和の炭化水素基である） The component (C) used in the present invention preferably has a structure represented by the following formula (III).

(In formula (III), R ³ , R ⁴ and R ⁵ are independently saturated or unsaturated hydrocarbon groups having 8 to 24 carbon atoms).

Saturated or unsaturated hydrocarbon group of the formula (III) may be a straight chain or branched ^chain, R 3, ^{R 4,} and the carbon number of ^{R 5} is from 8 to 24, more preferably from 10 to 22 , 14-22 are more preferred.
It is preferable that R ³ , R ⁴ , and R ⁵ are independently linear.

The component (C) is not particularly limited, but is macadamia nut oil, sunflower oil, avocado oil, almond oil, olive oil, sesame oil, rice bran oil, rice germ oil, corn oil, corn germ oil, saflower oil, hyole. Ixa flower oil, soybean oil, rapeseed oil, hyoleic sunflower oil, sunflower oil, grape seed oil, Argania spinosa kernel oil, kukui nut oil, wheat germ oil, cottonseed oil, palm oil, evening primrose oil, meadowfoam oil, rose Hip oil, flaxseed oil, sesame oil, pearl oyster seed oil, kudamonotokeisou seed oil, walnut oil, cha seed oil, cha seed oil, camellia oil, honeybee oil, peanut oil, prune seed oil, yuzu seed oil, yucha oil, rurigisa Seed oil, Amana zuna seed oil, apricot kernel oil, canilla rose fruit oil, canola oil, kyonin oil, kurofusaguri seed oil, sclerocaria bilea seed oil, persic oil, palm oil, palm kernel oil, pistacio seed oil, hazelnut oil, Hazelnut seed oil, mango seed oil, peach kernel oil, lacquer oil, wasabi tree seed oil, asa seed oil, southern ka oil, cranbear bicinica seed oil, tri (capric acid / capric acid) glyceryl, cacao butter, shea butter, mink One or more selected from oil, egg yolk oil, emu oil, beef bone fat, beef leg oil, pork fat, sheep fat, horse oil and mokuro. In particular, macadamia nut oil and sunflower oil are preferable. These may be used alone or in combination of two or more at any ratio.

In addition to the raw materials described above, the oil-in-water emulsified composition of the present invention includes monohydric alcohols, polyhydric alcohols, extract components, sugars, preservatives, and antioxidants that do not correspond to the components (A) to (C). Agents, moisturizers, powder components, other water-soluble components and the like, which are generally used in cosmetics, may be blended.

The monohydric alcohol is not particularly limited, and examples thereof include ethanol, lauryl alcohol, myristyl alcohol, cetanol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, and behenyl alcohol.

The polyhydric alcohol is not particularly limited, and examples thereof include propylene glycol, glycerin, diglycerin, 1,3-butanediol, 1,2-pentanediol, and 1,2-hexanediol.

The extract components are not particularly limited, but Ashitaba extract, Asenyaku extract, Avocado extract, Amacha extract, Amachazuru extract, Artea extract, Arnica extract, Oil-soluble Arnica extract, Almond extract, Aloe extract, Ansokko extract, Ginkgo extract. , Irakusa extract, Iris root extract, Wikyo extract, Ukon extract, Agetsu extract, Echinashi leaf extract, Ogon extract, Oubaku extract, Ouren extract, Omugi extract, Okura extract, Otogirisou extract, Oil-soluble Otogirisou extract, Odorikosou extract, Oil-soluble Odorikou Extract, Ononis extract, Dutch mustard extract, orange extract, orange flower water, seaweed extract, kakitannin, cucumber extract, kanokosou extract, gama extract, chamomile extract, oil-soluble chamomile extract, chamomile water, crow wheat extract, carrot extract, oil-soluble carrot extract , Carrot oil, Kawarayomogi extract, Kanzo extract, Kanzo extract powder, Kanzo flavonoid, Cantaristinki, Kistrawberry extract, Kiwi extract, Kina extract, Cucumber extract, Kyonin extract, Quince seed extract, Kuchinashi extract, Kumazasa extract, Clara extract, Walnut shell Extract, Grapefruit extract, Clematis extract, Brown sugar extract, Chlorella extract, Kwa extract, Keihi extract, Gentiana extract, Gennoshouko extract, Tea extract, Kohone extract, Gobo extract, Oil-soluble Gobo extract, Wheat germ extract, Hydrolyzed wheat powder, Rice bran extract , Rice bran extract, Confrey extract, Saishin extract, Saffron extract, Sabonsou extract, Oil-soluble salvia extract, Sanzashi extract, Sansho extract, Shiitake extract, Shiitake extract powder, Jio extract, Shikon extract, Oil-soluble Shikon extract, Shiso extract, Shinanoki extract , Oil-soluble Shinanoki extract, Shimotsukesou extract, Shakuyaku extract, Juzudama extract, Shokyo extract, Oil-soluble Shokyo extract, Shokyo tincture, Shobu root extract, Shirakaba extract, Oil-soluble Shirakaba extract, Shirakaba sap, Watermelon extract, Sugina extract Oil-soluble sugina extract, scordinine, stevia extract, sardine extract, sardine extract, sardine extract, sardine extract, sardine extract, oil-soluble sardine extract, sardine Youhakka extract, sage extract, oil-soluble sage extract, sage water, zegna oyster extract, celery extract, senkyu extract, senkyu water, senburi extract, soybean extract, taiso extract, thyme extract, cha extract, cha dry distillate, cha fruit extract, chowji extract , Chinpi extract, Tsubaki extract, Tsubokusa extract, Oil-soluble Teuchigurumi extract, Duke extract, Terminaria extract, Togarashi tinki, Touki extract, Oil-soluble Touki extract, Touki water, Tokinsenka extract, Oil-soluble Tokinsenka extract, Soy milk powder, Tounin extract, Tohi extract, Dokudami extract, Tomato extract, Tormentilla extract, Natto extract, Carrot extract, Oil-soluble carrot extract, Garlic extract, Novara extract, Oil-soluble Novara extract, Bakuga extract, Bakuga root extract, Bakumondou extract, Parsley extract, Hadakamugi leaf Juice concentrate, distilled Hakka water, Hamamelis water, Hamamelis extract, rose extract, Paris etalia extract, Hikiokoshi extract, Biwa leaf extract, oil-soluble Biwa leaf extract, Fukitanpopo extract, Bukuryo extract, Butcher bloom extract, Butcher bloom extract powder, grapes Extract, grape leaf extract, grape water, hayflower extract, hechima extract, hechima water, benibana extract, oil-soluble bodaiju extract, bodaiju water, button extract, hop extract, oil-soluble hop extract, pine extract, maria thistle extract, marronnier extract, Oil-soluble malonie extract, mukuroji extract, melissa extract, melilote extract, peach leaf extract, oil-soluble peach leaf extract, moyashi extract, yagurumagiku extract, yagurumagiku water, eucalyptus extract, yukinoshita extract, lily extract, yokunin extract, oil-soluble yokunin extract, yomogi Examples include extract, yomogi water, lavender extract, lavender water, apple extract, reishi extract, lettuce extract, lemon extract, lotus extract, rose water, rosemary extract, oil-soluble rosemary extract, roman chamomile extract, and crackle extract.

The saccharide is not particularly limited, and examples thereof include mannitol, sorbitol, xylitol, maltitol, erythritol, pentaerythritol, glucose, sucrose, fructose, lactose, maltose, xylose, and trehalose.

The preservative is not particularly limited, and examples thereof include hinokithiol, phenethyl alcohol, cha extract, lactic acid rod / daikon root fermented liquid, lactic acid rod / wasabi root fermented extract, white yanagi bark extract, and phenoxyethanol.

The antioxidant is not particularly limited, and examples thereof include tocopherol and ergothioneine.

The moisturizer is not particularly limited, and examples thereof include sodium hyaluronate, hydrolyzed sodium hyaluronate, sodium chondroitin sulfate, sodium lactate, sodium pyrrolidone carboxylate, betaine, lactic acid bacterium culture solution, yeast extract, and ceramide.

The powder component is not particularly limited, but kaolin, silicic anhydride, aluminum magnesium silicate, sericite, talc, boron nitride, mica, montmorillonite, hemp cellulose powder, wheat starch, silk powder, corn starch, flavonoid, etc. Natural pigments such as quinone, porphyrin, water-soluble anato, squid powder, caramel, guaiazulene, kuchinashi blue, kuchinashi yellow, cochineal, shikonin, copper chlorophyllin sodium, paprika pigment, benibana red, benibana yellow, laccanic acid, riboflavin butyrate Black, yellow iron oxide, black iron oxide, red iron oxide, corn, ultramarine, zinc oxide, chromium oxide, titanium oxide, black titanium oxide, zirconium oxide, chromium hydroxide, alumina, magnesium oxide, barium sulfate, aluminum hydroxide, calcium carbonate , Lithium cobalt titanate, manganese violet, pearl pigment and the like.

In the oil-in-water emulsified composition of the present invention, for example, the components (A) to (C) and, if necessary, other oil-soluble raw materials are mixed to prepare an oily component, and then a natural surfactant, It can also be produced by adding an oily component little by little to a place where an aqueous component prepared by mixing and dissolving other water-soluble raw materials is stirred as needed. When water and other components are used in combination as the aqueous component, water may be added after the oily component is added to the aqueous component.

From the viewpoint of usability, the oil-in-water emulsified composition of the present invention preferably has a viscosity in the range of 0.1 to 150 mPa · s, more preferably 0.1 to 140 mPa · s. It is more preferably in the range of 0.1 to 130 mPa · s. In the present invention, "usability" means that the oil-in-water emulsified composition has jetability.
The oil-in-water emulsified composition of the present invention can be adjusted to this viscosity range by appropriately adjusting the blending amount of thickeners such as xanthan gum, carrageenan, guar gum, and carbomer, which have the effect of imparting viscosity. It is more preferable that the oil-in-water emulsified composition of the present invention does not contain a thickener.
In the present invention, the viscosity is determined by the rotor No. 1 at 25 ° C. by a B-type viscometer. It is a value measured by rotating at 60 rpm for 1 minute using 2.

The oil-in-water emulsified composition of the present invention can be used as a cosmetic. The dosage form is not particularly limited, and suspensions, emulsions, liquids, gels, pastes, muds, creams, emulsions, lotions, foams, films, sprays, and essences are possible, but preferably. It is emulsified as a spray.

When the oil-in-water emulsified composition of the present invention is formulated as a spray, it can be made into a non-aerosol spray without using a propellant, or can be combined with a propellant such as LPG or nitrogen gas to form a foam type or a mist type. It may be an aerosol spray. LPG is preferable as the propellant used for the aerosol spray. The blending amount of LPG is preferably 8 to 50% by weight, more preferably 10 to 25% by weight in the spray agent.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the scope of the present invention is not limited to the description of these Examples.

The examples and comparative examples of the present invention were evaluated as follows.

(Evaluation of barrier property)
After applying the oil-in-water emulsified composition produced in Examples and Comparative Examples to the backs of the hands of six subjects, the subjects were immersed in hot water at 36 ° C. for 30 seconds, and the presence or absence of water repellency and film feeling thereafter was regarded as a barrier property. Each of the 6 people evaluated according to the following evaluation criteria. Prior to the evaluation, it was common among the six subjects how much the water repellency or film feeling changed before adding or deducting points. The judgment was made by calculating the average score of 6 persons for each of water repellency and film feeling, and using the following judgment criteria.
≪Evaluation criteria for water repellency≫
5 points: Very water repellent 4 points: Slightly water repellent 3 points: Neither can be said 2 points: Not very water repellent 1 point: No water repellency << Evaluation criteria for film feeling >>
5 points: Very filmy feeling 4 points: Slightly filmy feeling 3 points: Neither can be said 2 points: Not very filmy feeling 1 point: No film feeling at all << Judgment criteria >>
⊚: 4.5 points or more ○: 3.5 points or more and less than 4.5 points
Δ: 2.5 points or more and less than 3.5 points ×: less than 2.5 points

(Evaluation of storage stability)
The oil-in-water emulsified composition produced in Examples and Comparative Examples was placed in a plastic container and left at 50 ° C. for 1 month, and then rapid cooling to 0 ° C. and rapid heating to 45 ° C. were repeated for 1 month. The appearance after each was observed. Storage stability was evaluated according to the following criteria.
≪Judgment criteria≫
◯: Oil floating on the sample surface was not confirmed ×: Oil floating on the sample surface was confirmed

(Evaluation of usability)
The viscosity (mPa · s) of the oil-in-water emulsified composition produced in Examples and Comparative Examples was determined by using a B-type viscometer (product name: VISCOMETER, manufactured by BROOKFIELD), and the rotor No. Using No. 2, the value after rotating at 25 ° C. at 60 rpm for 1 minute was measured.
Further, using the produced oil-in-water emulsified composition, a spray was produced as follows, and the sprayability was evaluated.
The produced oil-in-water emulsified composition was filled in a pump-type plastic container that can be sprayed in the form of a mist to prepare a spray. Next, the state of discharge of the produced spray was evaluated according to the following criteria.
≪Evaluation criteria≫
◯: Mist-like injection ×: Straight-line injection or non-injection

(Comprehensive evaluation)
A comprehensive evaluation was performed based on the evaluation results of the barrier property (water repellency and film feeling), storage stability, and usability of the oil-in-water emulsified composition. The evaluation criteria at that time are as follows.
A: The oil-in-water emulsified composition has a barrier property (water repellency and film feeling), storage stability, and usability all of ◎ or ○, and has at least one ◎.
B: The oil-in-water emulsified composition has a barrier property (water repellency and film feeling), storage stability of ◯, and usability of ◯ or ×.
C: The barrier property (water repellency and film feeling) and storage stability of the oil-in-water emulsified composition are ◎ or ○ or △, and there is one △, and it is used. Those with a sex of ○ or ×.
D: In the evaluation of the barrier property (water repellency and film feeling) and storage stability of the oil-in-water emulsified composition, those having two or more Δs and having ◯ or × in usability.
E: In the evaluation of the barrier property (water repellency and film feeling) of the oil-in-water emulsified composition and the storage stability, there is at least one x, or the oil-in-water emulsified composition cannot be produced and can be evaluated. Those that did not exist and whose usability is ○ or ×.

The raw materials used in Examples and Comparative Examples are as follows. Among these raw materials, raw materials other than naturally derived raw materials are polysorbate 80 and PEG-60 hydrogenated castor oil.

[Oil component]
(Oil)
(A) Ingredient: Hydrocarbon A1: Olive squalane (manufactured by Higher Alcohol Industry Co., Ltd.)
A2: Tetradecane (manufactured by SASOL Germany GmbH, product name: PARAFOL14-97)
A3: Sugar squalane (manufactured by Nikko Chemicals Co., Ltd., product name: sugar squalane)
(B) Ingredient: Wax ester B1: Jojoba oil (manufactured by Koei Kogyo Co., Ltd., product name: refined jojoba oil)
(C) Ingredient: Triglyceride C1: Macadamia nut oil (manufactured by NOF CORPORATION, product name: refined macadamia oil)
C2: High oleic sunflower oil (manufactured by Yokoseki Oil & Fat Industry Co., Ltd.)
(Oil-soluble extract component)
Oil-soluble rosemary extract (manufactured by Koei Kogyo Co., Ltd., product name: organic oil-soluble rosemary extract T)
(Antioxidant)
Tocopherol (manufactured by Mitsubishi Chemical Foods Co., Ltd., product name: Emix D)

[Aqueous component]
(Natural surfactant)
Surfactin Na (manufactured by Kaneka Corporation, product name: Kaneka Surfactin)
(Synthetic surfactant)
Polysorbate 80 (manufactured by Nippon Emulsion Co., Ltd., product name: EMALEX ET-8020)
PEG-60 hydrogenated castor oil (manufactured by Nikko Chemicals Co., Ltd., product name: NIKKOL HCO-60)
(Multivalent alcohol)
Glycerin (manufactured by Sakamoto Yakuhin Kogyo Co., Ltd., product name: concentrated glycerin for cosmetics)
(Water-soluble extract component)
Rosemary extract (manufactured by Ichimaru Falcos Co., Ltd., product name: Falcolex Rosemary E)
(Preservative)
Hinokitiol (manufactured by Yakumo Kasan Co., Ltd., product name: Hinokitiol 20%)
Phenoxyethanol (manufactured by Koyo Fine Chemicals Co., Ltd., product name: Kaflect PE-1)
(Thickener)
Xanthan gum (manufactured by Taiyo Kagaku Co., Ltd., product name: Neosoft XR)
Carbomer (manufactured by Lubrizol, product name: Carbopol® 981 Polymer)
(Other water-soluble ingredients)
Trehalose (manufactured by Hayashibara Co., Ltd., product name: trehalose (for cosmetics))
Propanediol (manufactured by Zhangjiagang Glory Chemical Industry Co., Ltd, product name: 1,3-propanediol)
Glucosyl ceramide (manufactured by Ichimaru Falcos Co., Ltd., product name: water-soluble ceramide RC)
Citric acid (manufactured by Fuso Chemical Industry Co., Ltd., product name: purified citric acid (crystal))
Sodium hydroxide (manufactured by Tosoh Corporation, product name: Toso Pearl)

[Test 1]
In order to specify the amount of the oil agent suitable for the oil-in-water emulsified composition according to the present embodiment, the oil-in-water emulsified composition having the composition shown in Table 1 was produced, and the barrier properties, storage stability, and usability of each were obtained. Was evaluated.

Examples 1 to 6 and Comparative Examples 1 to 2
(Manufacture of oil-in-water emulsified composition)
A component (A), a component (B) and a component (C) are mixed to prepare an oil preparation so as to have the composition shown in Table 1, and then an oil-soluble extract component and an antioxidant are mixed to prepare an oil component. did.
After mixing a natural surfactant and a polyhydric alcohol so as to have the composition shown in Table 1, an oily component was gradually added to prepare a gel.
Then, trehalose, propanediol, a water-soluble extract component, a preservative, a thickener, and water were added to the prepared gel and mixed so as to have the composition shown in Table 1, to obtain an oil-in-water emulsified composition. Manufactured. The evaluation results of the obtained oil-in-water emulsified composition are shown in Table 1.

As is clear from Table 1, an oil-in-water emulsified composition in the range of 1.5% by weight of surfactin Na, which is a natural surfactant, and 15 to 55% by weight of an oil agent (Examples 1 to 6). All had good barrier properties, storage stability, and usability. On the other hand, the oil-in-water emulsified composition (Comparative Example 1) containing 1.5% by weight of surfactin Na, which is a natural surfactant, and 60% by weight of oil, has poor water repellency and high viscosity. The spray could not be sprayed, and the usability was poor. Further, the oil-in-water emulsified composition (Comparative Example 2) containing 1.5% by weight of surfactin Na, which is a natural surfactant, and 9.99% by weight of an oil agent, is inferior in water repellency and film feeling. The barrier property was bad.

[Test 2]
In order to compare the emulsifying ability of the natural surfactant and the synthetic surfactant and to specify the amount of the natural surfactant suitable for the oil-in-water emulsified composition according to the present embodiment, the compositions in Table 2 are used. The oil-in-water emulsified composition of No. 1 was produced and evaluated for its barrier property, storage stability, and usability, respectively.

Examples 7-9 and Comparative Examples 3-7
(Manufacture of oil-in-water emulsified composition)
The components (A), (B) and (C) are mixed to prepare an oil so as to have the composition shown in Table 2, and then the oil-soluble extract component and the antioxidant are mixed to prepare an oil component. did.
A gel was prepared by mixing a natural surfactant or a synthetic surfactant and a polyhydric alcohol so as to have the composition shown in Table 2, and then gradually adding an oily component.
Then, trehalose, propanediol, a water-soluble extract component, a preservative, and water were added to the prepared gel and mixed so as to have the composition shown in Table 2 to produce an oil-in-water emulsified composition. The evaluation results of the obtained oil-in-water emulsified composition are shown in Table 2. Since Comparative Examples 3 to 7 were not emulsified, the oil-in-water emulsified composition could not be produced and could not be evaluated.

As is clear from Table 2, an oil-in-water emulsified composition in which the natural surfactant Na surfactin Na is in the range of 0.1 to 3% by weight and the oil agent is in the range of 15 to 55% by weight ( In Examples 7 to 9), the barrier property and the storage stability were all good. On the other hand, an oil-in-water composition (Comparative Example 3) in which the amount of the oil agent is in the range of 15 to 55% by weight but the amount of the natural surfactant, surfactin Na, is less than 0.1% by weight, and the amount of surfactin Na is 3. An oil-in-water emulsified composition (Comparative Examples 4 and 5) having a weight of more than% by weight and an oil-in-water emulsified composition prepared by changing surfactin Na, which is a natural surfactant, to a synthetic surfactant (Comparative Examples 4 and 5). In Comparative Examples 6 and 7), none of them were uniformly mixed, the emulsified state was poor, and there was no commercial value.

[Test 3]
In order to examine the weight ratios of the components (A), (B) and (C) of suitable oils for the oil-in-water emulsified composition according to the present embodiment, the oil-in-water emulsified composition having the composition shown in Table 3 Was produced, and the barrier properties, storage stability, and usability of each were evaluated.

Examples 10 to 14 and Comparative Examples 8 to 10
(Manufacture of oil-in-water emulsified composition)
The blending amount of the oil agent was the same so as to have the composition shown in Table 3, and the ratio of the component raw materials was changed to prepare, and then the oil-soluble extract component and the antioxidant were mixed to prepare the oil component.
After mixing a natural surfactant and a polyhydric alcohol so as to have the composition shown in Table 3, an oily component was gradually added to prepare a gel.
Then, trehalose, propanediol, a water-soluble extract component, a preservative, a thickener, other water-soluble components, and water were added to the prepared gel, mixed, and mixed in water so as to have the composition shown in Table 3. An oil-type emulsified composition was produced. The evaluation results of the obtained oil-in-water emulsified composition are shown in Table 3.

As is clear from Table 3, the oil agent is surrounded by the coordinates K, the coordinates L, and the coordinates M in FIG. 1 showing the weight ratio of the component (A), the component (B), and the component (C). All of the oil-in-water emulsified compositions (Examples 10 to 14) within the above range had good barrier properties, storage stability, and usability. On the other hand, the oil-in-water emulsified composition (Comparative Example 8) using only the component (B) as the oil agent had poor storage stability. Further, the oil-in-water emulsified composition (Comparative Example 9) in which the component (A) was not used as the oil agent and the components (B) and (C) were used was inferior in barrier property. The oil-in-water emulsified composition (Comparative Example 10) in which the amount of the component (A) was less than 10% by weight with respect to the total weight of the oil agent had poor storage stability.

According to the present invention, it is possible to provide an oil-in-water emulsified composition using only substantially naturally derived raw materials, which are excellent in water repellency, film feeling, and storage stability. The composition of the present invention has good usability, can be used as a spray, and has high industrial applicability.

Claims (7)

An oil-in-water emulsified composition that uses substantially only naturally derived raw materials.
The oil-in-water emulsified composition contains 0.1 to 3% by weight of a natural surfactant and 15 to 55% by weight of an oil agent.
The oil agent contains a mixture of the following components (A), (B) and (C), and the mixture is liquid at 25 ° C.
An oil-in-water emulsified composition in which the amount of the component (A) is 10 to 98% by weight based on the total weight of the oil agent.
(A) Hydrocarbon (B) Wax Ester (C) Triglyceride In the figure below, the oil agent shows the weight ratio of the component (A), the component (B), and the component (C).
The weight ratio of (A): (B): (C) is 4.5: 4.5: 36 with respect to the first coordinate K.
The weight ratio of (A): (B): (C) is 4.5: 36: 4.5 with respect to the second coordinate L.
The first aspect of the present invention, wherein the weight ratio of (A): (B): (C) has a composition within the range surrounded by the third coordinate M having a weight ratio of 36: 4.5: 4.5. Oil-in-water emulsified composition.

One or two of the natural surfactants selected from the group consisting of surfactin, arslovactin, itulin, mannosylerythritol lipid, sophorolipid, trehalose lipid, ramnolipid, spicrysporic acid, emulsan, and salts thereof. The oil-in-water emulsified composition according to claim 1 or 2, which is the above. The oil-in-water emulsified composition according to any one of claims 1 to 3, wherein the natural surfactant has a structure represented by the following formula (I).

(In the formula (I), X is leucine, represents a residue of an amino acid selected from the group consisting of isoleucine and valine, R ^a represents an alkyl group having 9 to 18 carbon atoms, M ⁺ is independently , Alkyl metal ion or quaternary ammonium ion.) The oil-in-water emulsified composition according to any one of claims 1 to 4, which has a viscosity at 25 ° C. of 0.1 to 150 mPa · s. A cosmetic comprising the oil-in-water emulsified composition according to any one of claims 1 to 5. The cosmetic according to claim 6, wherein the dosage form is a spray.

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