JP5952047B2 - Oil-in-water emulsion composition and method for producing oil-in-water emulsion composition - Google Patents

Description

  The present invention relates to an oil-in-water emulsion composition. More particularly, the present invention relates to an oil-in-water emulsified composition that has an ultraviolet protection effect and is suitably used as a cosmetic applied to skin, hair, and the like.

  Sunscreen cosmetics having an ultraviolet protection effect are widely used in summer. In recent years, sunscreen cosmetics are used not only in summer but also throughout the year due to increasing awareness of the adverse effects of ultraviolet rays on the skin and increasing whitening needs.

  Moreover, since it dries especially in winter, cosmetics for skin care having both a high moisture feeling and a high moisturizing effect are used as a countermeasure against drying. Parts for which sunscreen countermeasures and dry countermeasures are particularly required include parts such as the face, arms, hands, and neck that may be exposed to the sun during the day.

  As an example of the sunscreen cosmetic, Patent Document 1 below discloses a water-in-oil emulsified sunscreen cosmetic containing 35 to 75% by mass of an oil phase. In this sunscreen cosmetic, the oil phase contains 10 to 50% by mass of an ultraviolet absorber and 20 to 60% by mass of volatile oil based on the total amount of the oil phase. Furthermore, this sunscreen cosmetic contains 0.5 to 2% by mass of dextrin fatty acid ester and / or sucrose fatty acid ester with respect to the total amount of the cosmetic.

Patent Document 2 below includes (a) a water-soluble polymer, (b) a nonionic surfactant having an HLB of 8 or less, (c) an anionic surfactant, and (d) an oil-soluble ultraviolet absorber. (E) An oil-in-water sunscreen cosmetic containing a polyhydric alcohol is disclosed. The apparent viscosity of this oil-in-water sunscreen cosmetic at 25 ° C. is 10000 mPa · s or less at a shear rate of 1.0 s ⁻¹ . In the oil-in-water type sunscreen cosmetic, (f) a water-soluble ultraviolet absorber or the like is used as necessary.

JP 2011-126732 A JP 2011-195478 A

  The cosmetic described in Patent Document 1 is not an oil-in-water emulsified cosmetic but a water-in-oil emulsified cosmetic. When such a water-in-oil type cosmetic is picked up and applied to an application part such as the skin, a moist feeling can be realized after application, but there is a problem that there is a sticky feeling or adhesion feeling after application. In addition, cosmetics tend to remain on the hand after use. For this reason, when a member such as a personal computer or a mobile phone is touched with a hand after application, there is a problem that cosmetics adhere to the member. In addition, the water-in-oil type emulsified cosmetic has a problem of poor stability.

The cosmetic described in Patent Document 2 is an oil-in-water cosmetic containing a water-soluble polymer, a nonionic surfactant, an anionic surfactant, an oil-soluble ultraviolet absorber, and a polyhydric alcohol. Patent Document 2 describes that the cosmetic is a low-viscosity cosmetic that has no separation over time, has excellent stability, is well-familiar with the skin, and has a refreshing and fresh feel. However, in the cosmetic described in Patent Document 2, the cosmetic has a refreshing feeling, but there is a problem that the cosmetic after application remains in a hand and the cosmetic adheres to a personal computer or a mobile phone.

  Patent Document 2 describes that (f) a water-soluble ultraviolet absorber may be used. However, water-soluble ultraviolet absorbers have a problem that they have low water resistance and are likely to deteriorate in oil-in-water cosmetics.

  On the other hand, oil-soluble ultraviolet absorbers are known. However, the polarity of oil-soluble UV absorbers is relatively high. For this reason, when an oil-soluble ultraviolet absorber is used, if an oil-in-water emulsion composition is obtained for the purpose of obtaining a refreshing use feeling, there is a problem that stickiness tends to occur after application of the composition. Furthermore, the oil-in-water emulsion composition using an oil-soluble ultraviolet absorber has a problem of low stability.

  It is an object of the present invention to have an ultraviolet protection effect, excellent conformity at the time of application, little stickiness after application, and the composition is less likely to adhere to a contact object after application, and further includes an oil-soluble ultraviolet absorber. The object is to provide an oil-in-water emulsified composition that is excellent in stability.

  According to a wide aspect of the present invention, an oil-in-water emulsion composition comprising an oil-soluble ultraviolet absorber, a polar fat having a melting point of 30 ° C. or higher and 45 ° C. or lower, and a higher alcohol that is solid at 25 ° C. And at least one component of a higher fatty acid that is solid at 25 ° C. is provided.

  In a specific aspect of the oil-in-water emulsion composition according to the present invention, the oil-in-water emulsion composition includes a volatile oil.

  In another specific aspect of the oil-in-water emulsion composition according to the present invention, the volatile oil is composed of cyclic silicone, light liquid isoparaffin, and chain methylpolysiloxane having a viscosity at 25 ° C. of 2 cs or less. Is at least one selected from

  In another specific aspect of the oil-in-water emulsion composition according to the present invention, the oil-in-water emulsion composition includes a hydrophobic powder.

  In still another specific aspect of the oil-in-water emulsion composition according to the present invention, the hydrophobic powder is a corn starch compound.

  Since the oil-in-water emulsion composition according to the present invention contains an oil-soluble ultraviolet absorber, it has an ultraviolet protection effect. Furthermore, the oil-in-water emulsified composition according to the present invention comprises, in addition to the oil-soluble ultraviolet absorber, a polar fat having a melting point of 30 ° C. or higher and 45 ° C. or lower, a higher alcohol that is solid at 25 ° C. Since it contains at least one component of the higher fatty acid that is a solid, it is possible to improve the familiarity at the time of coating and to reduce stickiness after coating. Furthermore, it can suppress that a composition adheres to a contact thing after application | coating. Furthermore, in the oil-in-water emulsion composition according to the present invention, the stability can be improved in spite of the use of the oil-soluble ultraviolet absorber.

  Hereinafter, the present invention will be described in detail.

The oil-in-water emulsion composition according to the present invention is an oil-in-water emulsion composition. The oil-in-water emulsion composition according to the present invention is not a water-in-oil emulsion composition. The oil-in-water emulsion composition according to the present invention includes (A) an oil-soluble ultraviolet absorber, (B) a polar fat having a melting point of 30 ° C. or higher and 45 ° C. or lower, and (C) a high-grade solid that is solid at 25 ° C. And at least one component of higher fatty acids that are solid at 25 ° C.

  Since the oil-in-water emulsion composition according to the present invention contains (A) an oil-soluble ultraviolet absorber, it has an ultraviolet protection effect. The oil-in-water emulsion composition according to the present invention has, for example, a sunscreen effect.

  Furthermore, by adopting the above composition in the oil-in-water emulsion composition according to the present invention, it is possible to improve the familiarity at the time of application and to reduce stickiness after application. For example, the familiarity can be improved when the oil-in-water emulsion composition is applied to the application part by hand, or when the oil-in-water emulsion composition is directly applied to the application part. Moreover, a feeling of use can be improved by reducing the stickiness after application | coating.

  Furthermore, by employing the above composition in the oil-in-water emulsion composition according to the present invention, it is possible to suppress the composition from adhering to the contact object after coating. For example, when the oil-in-water emulsion composition is applied to the hand and then a member such as a personal computer or a mobile phone is touched with the hand after application, the composition can be prevented from adhering to the member. In particular, in recent years, touch panels have become widespread. Even if the operation screen of the touch panel is operated with the hand after application, the composition can be made difficult to adhere to the operation screen.

  Furthermore, by employing the above composition in the oil-in-water emulsion composition according to the present invention, the stability can be enhanced despite the use of the oil-soluble ultraviolet absorber.

  Further, the fact that the oil-in-water emulsion composition according to the present invention is an oil-in-water emulsion composition also plays a major role in obtaining the above-described effects. Moreover, since the oil-in-water type emulsion composition which concerns on this invention is an oil-in-water type emulsion composition, it is excellent also in moisture retention.

  The oil-in-water emulsion composition according to the present invention preferably contains (D) a volatile oil. The oil-in-water emulsion composition according to the present invention preferably contains (E) a hydrophobic powder.

  Hereinafter, the detail of each component contained in the oil-in-water type emulsion composition which concerns on this invention is demonstrated.

((A) oil-soluble UV absorber)
(A) By using an oil-soluble ultraviolet absorber, the oil-in-water emulsion composition has an ultraviolet protective effect and a sunscreen effect. (A) As for an oil-soluble ultraviolet absorber, only 1 type may be used and 2 or more types may be used together.

(A) Examples of the oil-soluble ultraviolet absorber include 2-ethylhexyl paramethoxycinnamate, ethylhexyl paradimethylaminobenzoate, and ethylhexyl salicylate. From the viewpoint of further enhancing the UV protection effect and the stability of the composition, (A) the oil-soluble UV absorber is selected from the group consisting of 2-ethylhexyl paramethoxycinnamate, ethylhexyl paradimethylaminobenzoate and ethylhexyl salicylate. At least one selected from the group consisting of 2-ethylhexyl paramethoxycinnamate and ethyl-hexyl paradimethylaminobenzoate, more preferably 2-ethylhexyl paramethoxycinnamate. Further preferred. (A) The oil-soluble ultraviolet absorber may be paradimethylaminobenzoic acid-ethylhexyl. The oil-in-water emulsion composition preferably contains at least one selected from the group consisting of 2-ethylhexyl paramethoxycinnamate, ethylhexyl paradimethylaminobenzoate and ethylhexyl salicylate, and 2-ethylhexyl paramethoxycinnamate. And at least one of paradimethylaminobenzoic acid-ethylhexyl, more preferably 2-ethylhexyl paramethoxycinnamate.

  From the viewpoint of further enhancing the ultraviolet protection effect, the content of the (A) oil-soluble ultraviolet absorber is preferably 0.1% by mass or more, more preferably 1% by mass or more, in 100% by mass of the composition. From the viewpoint of further improving the stability of the composition, the content of the (A) oil-soluble ultraviolet absorber is preferably 20% by mass or less, more preferably 10% by mass or less, in 100% by mass of the composition. In 100% by mass of the composition, the content of (A) the oil-soluble ultraviolet absorber is preferably 0.1 to 20% by mass, more preferably 1 to 10% by mass.

((B) Polar fat and oil having a melting point of 30 ° C. or higher and 45 ° C. or lower)
(B) The melting point of the polar fat is 30 ° C. or higher and 45 ° C. or lower. (B) Polar fats and oils are solid at room temperature (25 degreeC). (B) It is preferable that polar fats and oils have a polar functional group. (B) It is preferable that polar fat has a plurality of polar functional groups. (B) The polar fat is preferably a highly polar fat. (B) The polar oil may not have a long-chain alkyl group having 16 to 22 carbon atoms. (B) As for polar fats and oils, only 1 type may be used and 2 or more types may be used together.

  Examples of the polar functional group include a hydroxyl group, a carboxyl group, and an ester group. From the viewpoint of further improving the stability of the composition, the polar functional group is preferably a hydroxyl group or a carboxyl group. The polar functional group is preferably a hydroxyl group, and is preferably a carboxyl group. From the viewpoint of further improving the stability of the composition, the polar functional group is particularly preferably a carboxyl group.

  (B) As polar oils and fats, any of plant-derived polar oils, animal-derived polar oils and mineral-derived polar oils can be used. (B) Examples of polar fats and oils include hydrogenated palm oil, hydrogenated jojoba oil, shea fat, (adipic acid, 2-ethylhexanoic acid, stearic acid) glyceryl oligoester, macadamia nut oil fatty acid phytosteryl, tricaprylate glyceryl, tricaprin Examples include glyceryl acid, glyceryl trimyristate, glyceryl tristearate, phytosteryl oleate, dipentaerythrityl hydroxystearate, dipentaerythrityl stearate, dipentaerythrityl rosinate, dipentaerythrityl hexahydroxystearate, and the like. From the viewpoint of further improving the stability of the composition, hydrogenated palm oil is preferable.

  From the viewpoint of further improving the stability of the composition, the content of (B) polar fat is preferably 0.1% by mass or more, more preferably 1% by mass or more in 100% by mass of the composition. From the viewpoint of further suppressing the adhesion of the composition to the contact object, the content of (B) polar fat is preferably 20% by mass or less, more preferably 15% by mass or less, in 100% by mass of the composition. In 100% by mass of the composition, the content of (B) polar fat is preferably 0.1 to 20% by mass, more preferably 1 to 15% by mass.

((C) at least one component of a higher alcohol that is solid at 25 ° C. and a higher fatty acid that is solid at 25 ° C.)
Component (C) is at least one of higher alcohols and higher fatty acids. Component (C) may be a higher alcohol, a higher fatty acid, or both a higher alcohol and a higher fatty acid. It is preferred to use both higher alcohols and higher fatty acids. The higher alcohol is solid at 25 ° C. The higher fatty acid is solid at 25 ° C. The oil-in-water emulsion composition preferably contains a higher alcohol, and preferably contains a higher fatty acid. The oil-in-water emulsion composition preferably contains both a higher alcohol and a higher fatty acid. As the component (C), only one type may be used, or two or more types may be used in combination.

  (C) It is preferable that melting | fusing point of a component exceeds 45 degreeC. The component (C) may not have a polar functional group and may not have a carboxyl group. The component (C) preferably does not have a plurality of polar functional groups. The component (C) preferably has a long chain alkyl group. The carbon number of the long chain alkyl group is preferably 16 or more, and preferably 22 or less.

  Examples of the higher alcohol include cetyl alcohol, stearyl alcohol, behenyl alcohol, aralkyl alcohol, cetostearyl alcohol, and hardened rapeseed oil alcohol. As for the said higher alcohol, only 1 type may be used and 2 or more types may be used together.

  Examples of the higher fatty acid include palmitic acid, stearic acid, behenic acid, palm fatty acid and coconut oil fatty acid. As for the said higher fatty acid, only 1 type may be used and 2 or more types may be used together.

  From the viewpoint of further improving the familiarity at the time of application, the content of the component (C) in 100% by mass of the composition is preferably 0.1% by mass or more, more preferably 0.5% by mass or more. From the viewpoint of further suppressing stickiness during coating and further enhancing the feeling of use, the content of the component (C) is preferably 15% by mass or less, more preferably 10% by mass or less, in 100% by mass of the composition. . In 100% by mass of the composition, the content of the component (C) is preferably 0.1 to 15% by mass, more preferably 0.5 to 10% by mass.

  Further, in 100% by mass of the composition, the content of the higher alcohol is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, preferably 15% by mass or less, more preferably 10% by mass or less. is there. In 100% by mass of the composition, the content of the higher fatty acid is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, preferably 15% by mass or less, more preferably 10% by mass or less.

  When the higher alcohol and the higher fatty acid are used in combination, the oil-in-water emulsion composition has a mass ratio (higher alcohol: higher fatty acid) of the higher alcohol to the higher fatty acid of 1: 9 to 9: 1 is preferably included, and more preferably 1: 7 to 7: 1.

((D) Volatile oil)
The oil-in-water emulsion composition according to the present invention preferably contains (D) a volatile oil. (D) By using volatile oil, the familiarity at the time of application can be further increased, and stickiness after application can be further suppressed. (D) As for volatile oil, only 1 type may be used and 2 or more types may be used together.

  (D) Volatile oil has volatility. Specific examples of (D) volatile oil include cyclic silicone oil, light liquid isoparaffin, chain methylpolysiloxane, and isododecane.

  Examples of the cyclic silicone oil include octamethylcyclotetrasiloxane, dodecamethylcyclohexasiloxane, hexamethylpolysiloxane, and decamethylcyclopentasiloxane.

The chain methylpolysiloxane is preferably a chain methylpolysiloxane having a viscosity at 25 ° C. of 2 cs or less. The “cs” means centistokes. The chain methylpolysiloxane is preferably a linear methylpolysiloxane.

  From the viewpoint of further improving the familiarity at the time of application and further suppressing the stickiness after application, (D) volatile oil is composed of cyclic silicone, light liquid isoparaffin, and chain methyl having a viscosity at 25 ° C. of 2 cs or less. It is preferably at least one selected from the group consisting of polysiloxanes. (D) The volatile oil is preferably a cyclic silicone, preferably light liquid isoparaffin, and is preferably a linear methylpolysiloxane having a viscosity at 25 ° C. of 2 cs or less.

  From the viewpoint of further improving the familiarity at the time of application and further suppressing the stickiness after application, it is preferable that the (D) volatile oil is at least one of cyclic silicone oil and light liquid isoparaffin. The oil-in-water emulsion composition preferably contains at least one of cyclic silicone oil and light liquid isoparaffin.

  From the viewpoint of further improving the familiarity at the time of application and further suppressing the stickiness after application, the content of (D) volatile oil is preferably 0.1% by mass or more, more preferably in 100% by mass of the composition. 1% by mass or more. In 100% by mass of the composition, the content of (D) volatile oil is preferably 20% by mass or less, more preferably 15% by mass or less. In 100% by mass of the composition, the content of (D) volatile oil is preferably 0.1 to 20% by mass, more preferably 1 to 15% by mass.

((E) hydrophobic powder)
The oil-in-water emulsion composition according to the present invention preferably contains (E) a hydrophobic powder. (E) By using hydrophobic powder, the spreading at the time of application can be further improved, and the adhesion of the composition to the contact object can be further suppressed after application. (E) Hydrophobic powder has hydrophobicity and is powdery. (E) As for hydrophobic powder, only 1 type may be used and 2 or more types may be used together.

  (E) Hydrophobic powder is not particularly limited, and examples thereof include corn starch aluminum octenyl succinate and corn starch. These hydrophobic powders give a smooth feeling without being caught. From the viewpoint of further improving the spread at the time of application and further suppressing the adhesion of the composition to the contact object after application, the hydrophobic powder (E) is preferably a corn starch compound. The corn starch compound is preferably at least one of corn starch aluminum octenyl succinate and corn starch. (E) The hydrophobic powder may be corn starch aluminum octenyl succinate, corn starch, or both corn starch aluminum octenyl succinate and corn starch. The oil-in-water emulsion composition preferably contains corn starch aluminum octenyl succinate, and preferably contains corn starch.

  From the viewpoint of further improving the spreading at the time of coating and further suppressing the adhesion of the composition to the contact material after coating, the hydrophobic powder (E) is preferably corn starch aluminum octenyl succinate, The oil-in-water emulsion composition preferably contains corn starch aluminum octenyl succinate.

  (E) Commercially available hydrophobic powders include DRY-FLO PC (National Starch and Chemical), octenyl succinate corn starch aluminum, Octier (manufactured by Nissho Chemical Co., Ltd.), and corn starch, corn starch. Bureau (manufactured by Nissho Chemical Co., Ltd.).

  From the viewpoint of further suppressing the adhesion of the composition to the contact material after coating, the content of the hydrophobic powder (E) is preferably 0.1% by mass or more, more preferably 0% in 100% by mass of the composition. .5% by mass or more. In addition, from the viewpoint of further suppressing residue generated when the skin is acclimated to the skin, the content of the hydrophobic powder (E) is preferably 15% by mass or less, more preferably 100% by mass. It is 10 mass% or less. In 100% by mass of the composition, the content of (E) hydrophobic powder is preferably 0.1 to 15% by mass, more preferably 0.5 to 10% by mass.

(Other ingredients)
The oil-in-water emulsion composition according to the present invention may contain components other than the above-described components as long as the effects of the present invention are not impaired. As the other components, components usually used in cosmetics can be used. As the other components, for example, non-volatile oil, purified water, surfactant, moisturizer, thickener, sequestering agent, preservative, anti-inflammatory agent, plant extract, fragrance and the like depending on the purpose It can mix | blend suitably.

  Examples of the non-volatile oil include hydrocarbon oil, ester oil, silicone oil, vegetable oil, and animal oil. Examples of the surfactant include an anionic surfactant, an amphoteric surfactant, a nonionic surfactant, and a cationic surfactant. Examples of the humectant include glycerin and sorbitol. Examples of the thickener include water-soluble polymers.

(Other details of oil-in-water emulsion composition)
The oil-in-water emulsion composition according to the present invention can be prepared using a known method. The oil-in-water emulsion composition according to the present invention is not particularly limited, and can be obtained, for example, by the following preparation method. (B) and component (C) were prepared, respectively an aqueous component such as an oily component and a humectant comprising (optionally component (D)) and, after that was solubilized by heating to 70 ° C. to 80 ° C. Mix and emulsify using a disper or homogenizer. After emulsification, after cooling to 50 ° C. or lower, component (A) (component (E) as required) is added, cooled and mixed.

  The oil-in-water emulsion composition according to the present invention is preferably a cosmetic, and is preferably a skin or hair cosmetic. The oil-in-water emulsion composition according to the present invention may be a skin cosmetic or a hair cosmetic. The oil-in-water emulsion composition according to the present invention is preferably a skin cosmetic. The oil-in-water emulsion composition according to the present invention is preferably a sunscreen cosmetic. The oil-in-water emulsion composition according to the present invention can be applied to any part such as the face, neck, arm, leg, and hand. The oil-in-water emulsion composition according to the present invention is preferably a skin care composition. Skin care includes body care. The oil-in-water emulsion composition according to the present invention is preferably a facial composition used for the face, and is preferably a body composition used for the body.

  The oil-in-water emulsion composition according to the present invention may be liquid or cream. The oil-in-water emulsion composition according to the present invention is preferably a hair cream, face cream or hand cream, more preferably a face cream or hand cream, and still more preferably a hand cream. The oil-in-water emulsion composition according to the present invention may be a face cream.

  The consistency at 25 ° C. of the oil-in-water emulsion composition according to the present invention is preferably 10 gf or more, and preferably 40 gf or less.

  The consistency can be measured using a rheometer (“CR-500DX” manufactured by Sun Science Co., Ltd.) under the measurement conditions: 25 ° C., adapter: φ17 mm flat type, stroke 20 mm.

  Hereinafter, the present invention will be described in more detail based on examples. The present invention is not limited only to the following examples. The unit of the blending amount is “% by mass” unless otherwise specified.

The following components were used in Examples , Reference Examples and Comparative Examples.

Cyclopentasiloxane (D5) (cyclic silicone oil, “DOW CORNING TORAY SH245FLUID” manufactured by Toray Dow Corning)
Cyclotetrasiloxane (D4) (Cyclic silicone oil, “DOW CORNING TORAY SH244FLUID” manufactured by Toray Dow Corning)
Cyclohexasiloxane (D6) (cyclic silicone oil, “DOW CORNING TORAY SH246FLUID” manufactured by Toray Dow Corning)
Methyl polysiloxane (1 cs) (chain methyl polysiloxane, viscosity 1 cs at 25 ° C., “DOW CORNING TORAY SH200C FLUID 1CS” manufactured by Toray Dow Corning)

(Example 1 , Reference Examples 2 and 3, Examples 5 and 6, Reference Examples 7 to 15 and Comparative Examples 1 to 5)
The components shown in Tables 1 and 2 below were blended in the amounts shown in Tables 1 and 2 and mixed to obtain an oil-in-water emulsion composition (oil-in-water emulsion cosmetic). In addition, the consistency in 25 degreeC of the oil-in-water type emulsion composition obtained by the Example , the reference example, and the comparative example was all 10 gf or more and 40 gf or less.

(Test Example 1: Familiar speed evaluation)
Twenty professional panels applied the obtained composition to the entire fingertips and performed a use test. Sensory evaluation was performed about the speed of familiarity to the skin at the time of application | coating, and the following references | standards evaluated.

<Evaluation criteria for familiarity speed>
○○: 16 or more out of 20 responded that skin familiarity was fast ○: 11-15 out of 20 responded that skin accustomed was fast △: 6-10 or more out of 20 people were accustomed to skin And answer ×: Less than 5 out of 20 responded that their skin familiarity was fast

(Test Example 2: Evaluation of non-stickiness)
Twenty professional panels applied the obtained composition to the entire fingertips and performed a use test. About the stickiness at the time of drying after application | coating, sensory evaluation was performed and the following references | standards evaluated.

<Evaluation criteria for non-stickiness>
○○: Reply that 16 or more of 20 people have no stickiness ○: Reply that 11 to 15 of 20 people have no stickiness △: Reply that 6 to 10 or more of 20 people have no stickiness ×: 20 Less than 5 of them answered that there was no stickiness

(Test Example 3: Evaluation of difficulty of adhesion of composition remaining in hand after application)
Twenty professional panels applied the obtained composition to the entire arm by hand and performed a use test. The LCD screen of the mobile phone was touched with the finger after application. Sensory evaluation was performed on the difficulty of adhesion of the composition, and the following criteria were used.

<Evaluation criteria for difficulty of adhesion of composition>
○○: More than 16 out of 20 responded that the composition is difficult to adhere to the liquid crystal screen of the mobile phone ○: 11-15 out of 20 responded that the composition is difficult to adhere to the liquid crystal screen of the mobile phone Δ: 6-10 or more out of 20 responded that the composition is difficult to adhere to the liquid crystal screen of the mobile phone ×: 5 out of 20 respondents said that the composition is difficult to adhere to the liquid crystal screen of the mobile phone

(Test Example 4: Evaluation of stability)
The obtained composition was filled in a container and stored at 40 ° C. for 1 month. The state of the composition after storage was visually observed. The stability of the composition was evaluated according to the following criteria.

<Stability evaluation criteria>
○○: There is no difference when comparing the composition after storage for 1 month and the composition before storage ○: Difference when the composition after storage for 1 month is compared with the composition before storage △: The composition after storage for 1 month has changed to such an extent that a difference is observed when compared with the composition before storage ×: 1 month after storage In the composition, it is clearly separated, the viscosity is increased to the extent that it is difficult to apply, or the occurrence of grains is observed

  The compositions and evaluation results are shown in Tables 1 and 2 below. The neutralizing agent was used in such an amount that the pH of the composition was 5.5-7.

  Hereinafter, formulation examples of the oil-in-water emulsion composition will be shown. The unit of the blending amount is “mass%”. Moreover, in the following prescription example, the neutralizing agent was used in such an amount that the pH of the composition was 5.5-7.

Claims (3)

An oil-in-water emulsion composition,
An oil-soluble UV absorber,
Polar oils having a melting point of 30 ° C. or higher and 45 ° C. or lower;
Both higher alcohols that are solid at 25 ° C. and higher fatty acids that are solid at 25 ° C .;
Volatile oil,
Corn starch aluminum octenyl succinate, which is a hydrophobic powder,
100 mass% oil emulsion composition in water, the content of the oil-soluble ultraviolet absorber is less than 1% or more state, and are 20 wt% or less,
In 100% by mass of the oil-in-water emulsion composition, the content of the polar fat is 5% by mass or more and 15% by mass or less,
In 100% by mass of the oil-in-water emulsion composition, the total content of the higher alcohol that is solid at 25 ° C. and the higher fatty acid that is solid at 25 ° C. is 4% by mass or more and 15% by mass or less.
100 mass% oil emulsion composition in water, wherein the content of the volatile oil is 1% by mass or more, Ru der 15 wt% or less, oil-in-water emulsion composition. 2. The oil-in-water according to claim 1, wherein the volatile oil is at least one selected from the group consisting of cyclic silicone, light liquid isoparaffin, and linear methylpolysiloxane having a viscosity at 25 ° C. of 2 cs or less. Type emulsified composition. A method for producing the oil-in-water emulsion composition according to claim 1 or 2 ,
Emulsification after heating and dissolving a polar fat having a melting point of 30 ° C. or higher and 45 ° C. or lower, a higher alcohol that is solid at 25 ° C., a higher fatty acid that is solid at 25 ° C., and a volatile oil. Then, after cooling to 50 ° C. or lower, an oil-soluble ultraviolet absorber and corn starch aluminum octenyl succinate, which is a hydrophobic powder , are added and mixed to obtain an oil-soluble ultraviolet absorber and a melting point of 30. A polar fat that is not lower than 45 ° C. and lower than 45 ° C., a higher alcohol that is solid at 25 ° C. and a higher fatty acid that is solid at 25 ° C., volatile oil, and corn starch aluminum octenyl succinate as a hydrophobic powder. wherein the oil-in-water emulsion composition 100% by mass, the oil content of the soluble ultraviolet absorber is less than 1% or more, 20 wt% or less der is, oil-in-water emulsion composition 100 In the amount%, the content of the polar fat is 5% by mass or more and 15% by mass or less, and in 100% by mass of the oil-in-water emulsion composition, the higher alcohol which is solid at 25 ° C. and the solid at 25 ° C. The total content of higher fatty acids is 4% by mass or more and 15% by mass or less. In 100% by mass of the oil-in-water emulsion composition, the content of the volatile oil is 1% by mass or more and 15% by mass or less. An oil-in-water emulsion composition for producing an oil-in-water emulsion composition.