JP6241882B2 - Oil-in-water cream composition - Google Patents

Description

The present invention relates to an oil-in-water cream composition comprising sodium tocopheryl phosphate, a sucrose fatty acid ester having an HLB of 15 or more, oil and water. The present invention relates to an oil-in-water cream composition that suppresses dripping caused by mixing with water vapor during use at a high temperature and has a feeling of use that is excellent in massage effects such as skin familiarity and sliding.

Conventionally, as an oil-in-water emulsion composition mainly used for massage, high molecular weight polyethylene glycol, nonionic surfactant with HLB of 10 to 17, nonionic surfactant with HLB of 2 to 10 and solid or semi-solid The technique of mix | blending the oil phase which mix | blends an oil component is disclosed (patent document 1). However, there has been a problem that if an amount of oil is stably added in a large amount, the amount of the nonionic surfactant increases, resulting in a sticky feeling.

On the other hand, as an oil-in-water emulsified cream composition that prevents viscosity reduction due to contact with moisture, the inner phase is 50 to 80% by mass, the outer phase is 20 to 50% by mass, and the polysaccharide thickener is 0.03 in the outer phase. The technique containing -0.5 mass% is disclosed (patent document 2). However, the high internal phase oil-in-water emulsified cream composition has a drawback that the moisture content is small and the fresh feeling of use is poor, and the skin texture after wiping remains sticky.

Japanese Patent No. 5137439 JP 2013-224268 A

Therefore, a steamer that generates water vapor is used, and when the face is heated with water vapor (hereinafter referred to as steam heating), dripping caused by mixing with water vapor is suppressed, and good usability (skin It is an object of the present invention to provide an oil-in-water cream-like composition having familiarity, sliding, and skin state after wiping.

In view of such a situation, the present inventor has intensively studied, and as a result, sodium tocopheryl phosphate,
It has been found that an oil-in-water cream composition characterized by containing a sucrose fatty acid ester having an HLB of 15 or more, oil and water solves the above problems, and has completed the present invention.

That is, the present invention includes the following components (A) to (D):
(A) Sodium tocopheryl phosphate (B) Sucrose fatty acid ester (C) oil (D) water 30-50 mass% whose HLB is 15 or more
And an oil-in-water cream composition characterized by being used under steam heating.

The oil-in-water cream composition of the present invention suppresses dripping caused by mixing with water vapor when used under steam heating, and also has a feeling of use excellent in massage effects such as skin familiarity and slipping. Have.

Component (A) Sodium tocopheryl phosphate used in the present invention functions as an emulsification aid that exhibits a dripping suppression effect when used under steam heating in the oil-in-water cream composition of the present invention. Any sodium tocopheryl phosphate used in normal cosmetics can be used. A commercially available product can be used as sodium tocopheryl phosphate, and commercially available vitamin E sodium phosphate manufactured by Showa Denko KK can be used.

The content of the component (A) in the oil-in-water cream composition of the present invention is preferably 0.1 to 1.0% by mass (hereinafter simply referred to as “%”), and is 0.3 to 0.7. % Is more preferable. When the content of the component (A) is within this range, an oil-in-water cream composition that is more excellent in dripping suppression effect and emulsifying ability can be obtained.

The component (B) sucrose fatty acid ester having an HLB of 15 or more used in the present invention functions as an emulsifier in the oil-in-water cream composition of the present invention, and may be used in ordinary cosmetics. Any of them can be used. Specific examples include sucrose laurate, sucrose myristic ester, sucrose palmitate, sucrose stearate, sucrose oleate, etc., and these may be used singly or in combination. it can. Among these, when sucrose palmitic acid ester and / or sucrose stearate is selected as the component (B), an oil-in-water creamy composition that is easy to obtain finer emulsified particles and has good usability is obtained. be able to. The HLB value of the surfactant in the present invention is a value calculated by the following Griffin equation.
HLB value = (molecular weight of hydrophilic group portion / molecular weight of surfactant) × 20

Commercially available sucrose palmitate ester and sucrose stearate ester can be used, and as sucrose palmitate ester, Surf Hope SE COSME C-1616 (HLB16) manufactured by Mitsubishi Chemical Foods Co., Ltd., sucrose stearin Examples of the acid ester include Surf Hope SE COSME C-1816 (HLB16) manufactured by Mitsubishi Chemical Foods Corporation.

The content of the component (B) in the oil-in-water cream composition of the present invention is preferably 0.5 to 5%, more preferably 1 to 3%. When the content of the component (B) is within this range, an oil-in-water cream composition that is more excellent in emulsifying power and usability can be obtained.

The content of the component (C) in the oil-in-water cream composition of the present invention is 40 to 60%, and the component (C) preferably contains 1 to 6% of solid oil at 25 ° C. (C) The solid oil at 25 ° C. has a mass ratio of the solid oil having a melting point of less than 60 ° C. and the solid oil having a melting point of 60 ° C. or more in the range of 1: 0.1 to 1: 1. It is more preferable. When the content of the component (C) is within this range, it is possible to obtain an oil-in-water cream composition having excellent usability for preventing dripping, conforming to the skin and pointing.

Among solid oils at 25 ° C., the melting point is less than 60 ° C .: 115 ° paraffin, 130 ° paraffin, cetyl myristate, cetyl palmitate, hydrogenated palm oil, cetyl alcohol, stearyl alcohol, lauric acid, myristic acid, etc. Can be illustrated.

Examples of solid oils at 25 ° C that have a melting point of 60 ° C or higher include 155 ° paraffin, candelilla wax hydrocarbon, ceresin, microcrystalline wax, beeswax, hydrogenated jojoba oil, behenyl alcohol, palmitic acid, stearic acid, etc. it can.

The liquid oil of component (C) used in the oil-in-water cream composition of the present invention is liquid at 25 ° C., and specific examples of the liquid oil include squalane, liquid paraffin, liquid isoparaffin, α-olefin oligomer. Liquid hydrocarbons such as isopropyl myristate, octyldodecyl myristate, oleyl oleate, decyl oleate, 2-hexyldecyl isostearate, hexyldecyl dimethyloctanoate, isopropyl palmitate, hexyl laurate, butyl stearate, etc. Esters: avocado oil, almond oil, olive oil, sesame oil, sasanqua oil, safflower oil, soybean oil, castor oil, camellia oil, corn oil, rapeseed oil, rice bran oil, persic oil, meadowfoam oil, jojoba oil, palm kernel oil , Palm oil, sunflower oil, grape seed Vegetable oil such as oil, cottonseed oil; animal oil such as turtle oil, mink oil, egg yolk fat oil; silicone oil such as dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, octamethylcyclotetrasiloxane . These liquid oils can be used singly or in combination of two or more.

The content of component (D) in the oil-in-water cream composition of the present invention is preferably 30 to 50%. When the content of the component (D) is less than 30%, stickiness occurs during application, and a fresh feeling of use cannot be obtained. Moreover, when content of a component (D) exceeds 50%, the dripping suppression effect in the use under steam heating may not fully be exhibited.

In the oil-in-water cream composition of the present invention, an anionic surfactant, a cationic surfactant, an amphoteric surfactant, an aqueous component, a water-soluble component as a component used in normal cosmetics in addition to the essential components described above. Polymers, chelating agents, antioxidants, ultraviolet absorbers, powders, fragrances, preservatives, colorants, cosmetic ingredients, and the like can be contained within a range that does not impair the effects of the present invention.

Hereinafter, the present invention will be described in more detail with reference to examples. Note that these do not limit the present invention. All blending amounts are mass% unless otherwise specified.
Examples 1-9 and Comparative Examples 1-9
The oil-in-water cream compositions having the formulations shown in Tables 1 and 2 were prepared by the production method shown below.
(Production method)
(A) sodium tocopheryl phosphate, (B) sucrose fatty acid ester with HLB of 15 or more and glycerin were uniformly mixed, and (C) oil that was uniformly heated and mixed was added little by little, and the gel was mixed. And warm to 80 ° C. On the other hand, (D) water, a carbomer, and potassium hydroxide were uniformly mixed, an aqueous phase heated to 80 ° C. was added and emulsified, and then cooled to obtain an oil-in-water cream composition.

About the obtained oil-in-water cream-like composition, the following test methods evaluated dripping and usability (skin familiarity, pointing slip, skin state after wiping off). The results are shown in Tables 1 and 2.

Using a steamer that generates 3.5 to 5 ml of water vapor per minute by a dripping female specialist panel (20 persons), while heating the oil-in-water cream composition and the face obtained by the above production method with water vapor Massage (*) was performed, and the dripping state was determined according to the following criteria.
(*) When the skin temperature of the face was measured using THERMO-HUMTER PT-3LF manufactured by Optics, an increase in skin temperature of 8.4 ° C. on average for 20 people was confirmed.
A: 18 or more people judged that the liquid did not drip.
○: 14 to 17 persons determined that the liquid did not drip.
(Triangle | delta): Nine to thirteen people judged with the liquid not dripping.
X: No more than 8 people judged to have not dripped.

Usability (skin familiarity)
A usage test was conducted by a female professional panel (20 persons), and skin familiarity was evaluated according to the following criteria.
A: 18 or more people judged that familiarity with skin was good.
○: 14 to 17 persons determined that familiarity with the skin was good.
(Triangle | delta): Nine to thirteen people judged that familiar with skin was good.
×: Eight or less people determined to be familiar with the skin.

Usability (slip)
A use test was conducted by a female professional panel (20 persons), and slipping was evaluated according to the following criteria.
A: 18 or more people judged that sliding was good.
○: 14 to 17 persons judged that sliding was good.
(Triangle | delta): Nine to thirteen people determined that the sliding point was good.
X: Eight or less people determined that sliding was good.

Usability (skin condition after wiping off)
A use test was conducted by a female professional panel (20 persons), and the skin condition after being wiped off (not washed away) was evaluated according to the following criteria.
A: 18 or more people determined that the skin condition was good.
○: 14 to 17 persons determined that the skin condition was good.
Δ: 9 to 13 persons determined that the skin condition was good.
X: Eight or less people determined to have good skin condition.

In Tables 1 and 2, the following products used the following components.

Sodium tocopheryl phosphate * 1: Vitamin E sodium sucrose stearate (HLB16) manufactured by Showa Denko KK * 2: Surf Hope SE COSME C-1816 manufactured by Mitsubishi Chemical Foods
Liquid paraffin * 3: SONNEBORN INC. CARNATION made by
Meadow Foam Oil * 4: Cropea Medfoam -LQ- (JP) manufactured by Croda Japan Co., Ltd.
Cetyl palmitate * 5: NIKKOL N-SPV manufactured by Nikko Chemicals
Candelilla wax hydrocarbon * 6: Refined candelilla wax MD-21 manufactured by Yokoseki Oil & Fat Co., Ltd.

From the results of Tables 1 and 2, the oil-in-water cream compositions of Examples 1 to 9 according to the present invention are effective in any of dripping and usability (skin familiarity, pointing slip, skin condition after wiping off). Can also be seen as excellent. On the other hand, Comparative Examples 1 to 9 that do not satisfy the constituent requirements of the present invention could not have all the effects of usability.

Other examples of the present invention will be shown below.

(Example 10: Massage cream 1)
(Compounding ingredients) (mass%)
(1) Sodium tocopheryl phosphate 0.6
(2) Sucrose palmitate ester 2.0
(3) Glycerin 12.0
(4) Liquid paraffin 29.0
(5) Meadowfoam oil 10.0
(6) Cetyl palmitate 0.3
(7) Stearyl alcohol 0.2
(8) Candelilla wax hydrocarbon 0.5
(9) Purified water 43.8
(10) Carbomer 0.5
(11) Purified water 1.0
(12) Potassium hydroxide 0.1
(Manufacturing method)
(1) to (3) are uniformly mixed, and (4) to (8), which are previously uniformly mixed at 80 ° C., are added little by little while rotating the paddle to form a gel. The gel was heated to 80 ° C, while (9) and (10), which were heated to 80 ° C after uniform mixing, were slowly added to the gel and emulsified while rotating the paddle. (11) and (12) dissolved after emulsification are added. Thereafter, it was rapidly cooled to 35 ° C. to obtain the desired massage cream 1.
(Evaluation)
When the obtained massage cream 1 was evaluated according to the above-described tests and evaluation criteria, it was excellent in any of the effects of dripping and usability (skin familiarity, pointing, and skin condition after wiping off).

(Example 11: Massage cream 2)
(Compounding ingredients) (mass%)
(1) Sodium tocopheryl phosphate 0.3
(2) Sucrose stearate 2.0
(3) Glycerin 7.0
(4) Liquid paraffin 50.0
(5) Meadow foam oil 7.0
(6) Cetyl palmitate 1.0
(7) Stearyl alcohol 1.0
(8) Behenyl alcohol 0.5
(9) Candelilla hydrocarbon 0.5
(10) Purified water 29.1
(11) Carbomer 0.5
(12) Purified water 1.0
(13) Potassium hydroxide 0.1
(Manufacturing method)
(1) to (3) are uniformly mixed, and (4) to (9), which are previously uniformly mixed at 80 ° C., are added little by little while rotating the paddle to form a gel. The gel was heated to 80 ° C., while (10) and (11), which were heated to 80 ° C. after uniform mixing, were slowly added to the gel while rotating the paddle and emulsified. (12) and (13) dissolved after emulsification are added. Thereafter, it was rapidly cooled to 35 ° C. to obtain the desired massage cream 2.
(Evaluation)
When the obtained massage cream 2 was evaluated according to the test and evaluation criteria described above, it was excellent in any of the effects of dripping and usability (skin familiarity, sliding, and skin condition after wiping off).

According to the present invention, in use under steam heating, an oil-in-water cream form that suppresses dripping caused by mixing with water vapor and that has an excellent feeling of massage such as skin familiarity and sliding A composition can be provided.

Claims (2)

The following components (A) to (D):
(A) Sodium tocopheryl phosphate 0.1-1% by mass
(B) 0.5-5 mass% of sucrose fatty acid ester whose HLB is 15 or more
(C) Oils 1 to 6 that are solid at 25 ° C. with a mass ratio of solid oil having a melting point of less than 60 ° C. and solid oil having a melting point of 60 ° C. or higher in the range of 1: 0.1 to 1: 1. mass%
(D) Water 30-50 mass%
And an oil-in-water cream composition characterized by being used under steam heating. The oil-in-water cream composition according to claim 1, wherein component (B) is sucrose palmitate and / or sucrose stearate.