JP2023097920A - Oily washing agent - Google Patents

Abstract

To provide an oily washing agent which is excellent in appearance transparency of water mixing, and make-up removing ability, and is also excellent in temporal stability.SOLUTION: There is provided an oily washing agent including components (A)-(D), a total content of the components (A) and (B) is 10-35 mass%. The component (A) is polyglycerol fatty acid diester, the component (B) is fatty acid polyoxyethylene glyceryl whose HLB is 8-10, the component (C) is a liquid fatty acid, and the component (D) is liquid fat (except for the component (C)).SELECTED DRAWING: None

Description

The present invention relates to an oily cleanser.

An oil-based cleanser for washing off makeup cosmetics such as foundation and lipstick is composed of an oil that dissolves the components of the makeup cosmetics and a nonionic surfactant with a high HLB for washing them away. It is. In particular, oil-based cleansers such as oil cleansers have a stable blend of nonionic surfactants in the oil, so many of them have a transparent appearance, blend well with make-up cosmetics, and are easy to wash off. Because of this, it is known to be good at removing makeup (highly cleansing effect).

However, since these oil-based cleansers contain nonionic surfactants with high HLB, they become oil-in-water emulsions when used with wet hands or when water is mixed in the container. Not only does it become impossible to maintain the transparency of the appearance, but there is also the problem that the blending speed with the make-up cosmetic and the make-up removal are lowered. Therefore, the development of an oil-based detergent that is resistant to water contamination is desired. In order to suppress the loss of appearance transparency and the reduction in cleansing effect due to water contamination, a large amount of a specific surfactant is added to an oil-based detergent. Methods of blending and combining (see, for example, Patent Documents 1 to 3) have been investigated.

Patent No. 4746889 Patent No. 3586682

However, in the technique disclosed in Patent Document 1, there are safety concerns due to the large amount of surfactant blended, and in the technique disclosed in Patent Document 2, makeup removal and aging stability especially at high temperatures was not satisfactory. As described above, in the conventional technology, it is difficult to obtain an oil-based cleanser that has excellent stability over time without impairing the ability to remove makeup as an oil-based cleanser when used on wet skin or with wet hands. I couldn't get it.
Accordingly, an object of the present invention is to provide an oil-based cleanser that is excellent in maintaining the transparency of appearance and removing makeup when mixed with water, and is also excellent in stability over time.

Under such circumstances, the present inventors have made intensive studies and found that, among nonionic surfactants used in oil-based detergents, polyglycerin fatty acid diesters and specific HLB fatty acid polyoxyethylene glyceryl can be used in combination to prevent water contamination. It has been found to maintain the transparency of appearance even at times. Furthermore, by blending the two types of surfactants and a liquid fatty acid as a third component for forming a stable structure, it was found that an oil-based detergent that is stable and transparent even at high temperatures can be obtained. completed.

That is, the present invention provides the following.
[1] An oil-based detergent containing the following components (A) to (D), wherein the total content of the component (A) and the component (B) is 10 to 35% by mass.
(A) polyglycerin fatty acid diester (B) fatty acid polyoxyethylene glyceryl having an average HLB of 8 to 10 (C) liquid fatty acid (D) liquid oil (excluding component (C))
[2] Mass ratio of the total content of the component (A) and the component (B) to the content of the component (C); {(A) + (B)}/(C) is 2.5 to 10 The oily cleanser according to [1].
[3] The oil-based detergent according to [1] or [2], wherein the component (B) is polyoxyethylene glyceryl isostearate having an average number of added moles of ethylene oxide of 4 to 20.
[4] The oil-based detergent according to [1] to [3], wherein the component (C) is isostearic acid.
[5] Described in [1] to [4], wherein the component (D) contains at least one ester oil, and the content of the ester oil in the component (D) liquid oil is 50% by mass or more. oily cleanser.

The oily cleanser of the present invention can maintain the appearance transparency and high makeup removal even when mixed with water. Furthermore, the oil-based detergent of the present invention has excellent stability over time, especially at high temperatures. Therefore, it can be used even with wet hands, and exhibits a high cleansing effect.

Embodiments of the present invention will be described below. In addition, the present invention is not limited only to the following embodiments. In the present specification, the range “X to Y” includes X and Y and means “X or more and Y or less”.

Component (A): Polyglycerin Fatty Acid Diester The component (A) polyglycerin fatty acid diester used in the present invention is a diester-type nonionic surfactant obtained by esterifying polyglycerin obtained by polymerizing glycerin and a fatty acid. It is not particularly limited as long as it is commonly used for pharmaceuticals, quasi-drugs, pharmaceuticals, and the like. As for the polyglycerin group, the degree of polymerization of glycerin is preferably 4-10, more preferably 6-8. The fatty acid used for esterification is a linear or branched saturated fatty acid, preferably having 6 to 18 carbon atoms, more preferably 8 to 12 carbon atoms. One or more of component (A) can be selected and used according to need, but the average HLB is preferably 8-12. Specific examples include polyglyceryl-6 dicaprate, which is a diester of polyglycerin having a degree of polymerization of 6 and a saturated fatty acid having 10 carbon atoms. (manufactured by Taiyo Kagaku Co., Ltd.).

The HLB (Hydrophile-Lipophile Balance) in the present invention is an index showing the hydrophilic-lipophilic balance, and is calculated by the following (formula 1) by Oda and Teramura et al. Use the weighted average.
HLB = "inorganic value (IV)/organic value (OV)" x 10 (Formula 1)
(See Yoshio Koda, "Organic Conceptual Diagram -Basics and Applications-", pp. 11-17, Sankyo Publishing, 1984)

The content of component (A) in the present invention is not particularly limited, but from the viewpoint of makeup removal and appearance transparency, it is 5% by mass (hereinafter simply referred to as "%") in the oil-based cleanser. ) or more, more preferably 8% or more. Moreover, it is preferably 20% or less, more preferably 17% or less.

Component (B): Fatty acid polyoxyethylene glyceryl having an average HLB of 8 to 10 The fatty acid polyoxyethylene glyceryl of component (B) used in the present invention is a nonionic surfactant obtained by addition polymerization of ethylene oxide to fatty acid glyceryl. The average HLB is 8 to 10, although it is not particularly limited as long as it is an agent and commonly used in cosmetics, quasi-drugs, pharmaceuticals, and the like. As the polyoxyethylene group (hereinafter sometimes abbreviated as “PEG”), the degree of polymerization of ethylene oxide is preferably 4-20, more preferably 8-16. The fatty acid is a linear or branched saturated fatty acid, preferably having 8 to 22 carbon atoms, more preferably 10 to 18 carbon atoms. Among branched saturated fatty acids, isostearic acid is preferred. Component (B) may be used singly or in combination of two or more, and the average HLB is 8-10.

Component (B) specifically includes PEG-8 glyceryl isostearate (HLB=10), PEG-6 glyceryl isostearate (HLB=8), PEG-20 glyceryl diisostearate (HLB=10), and triisostearic acid. PEG-30 glyceryl (HLB=10), PEG-20 glyceryl triisostearate (HLB=8) and the like can be preferably mentioned.

Although the content of component (B) in the present invention is not particularly limited, it is preferably 5% or more in the oily cleanser from the viewpoint of makeup removal and appearance transparency when mixed with water. It is more preferably 8% or more. Moreover, it is preferably 20% or less, more preferably 17% or less.

The total content of component (A) and component (B) in the present invention is 10% to 35%, and if it is less than 10%, the appearance transparency when mixed with water is not maintained, and the makeup removal effect when mixed with water is not maintained. may decrease. On the other hand, when it exceeds 35%, the amount of the surfactant becomes large, and there is a possibility that safety concerns may arise and stability over time cannot be maintained.

Component (C): Liquid fatty acid The component (C) liquid fatty acid used in the present invention is not particularly limited as long as it is commonly used in cosmetics, quasi-drugs, pharmaceuticals, etc., but is linear. A higher fatty acid having 12 to 22 carbon atoms having a straight or branched chain, saturated or unsaturated hydrocarbon group and being liquid at 25°C can be used. In the present invention, the combined use of component (A) and component (B) is stabilized. Specific examples include straight-chain fatty acids such as oleic acid, linoleic acid and linolenic acid, and branched-chain fatty acids such as isopalmitic acid and isostearic acid. One or more of component (C) can be selected and used as necessary, but isostearic acid is preferred from the viewpoint of stability over time. Commercially available products include isostearic acid EX (manufactured by Kokyu Alcohol Kogyo Co., Ltd.), NAA-400 oleic acid (manufactured by NOF Corporation), and the like.

The content of (C) in the present invention is not particularly limited, but from the viewpoint of stability over time, it is preferably 1% or more, more preferably 1.5% or more, in the oily detergent. preferable. Further, it is preferably 10% or less, more preferably 8% or less.

In the present invention, the mass ratio of the total content of component (A) and component (B) to the content of component (C); {(A) + (B)}/(C) is 2.5 to 10. is preferred. Within this range, stability over time is excellent and makeup removal is excellent even when mixed with water, which is preferable.

Component (D): Liquid Oil The component (D) liquid oil used in the present invention means an oil having fluidity at 25°C, and is commonly used in cosmetics, quasi-drugs, pharmaceuticals, and the like. If so, it is not particularly limited. For example, hydrocarbons, oils and fats, ester oils, higher alcohols, silicone oils, fluorinated oils, lanolin derivatives, regardless of the origin of volatile or non-volatile, animal oil, vegetable oil, synthetic oil, etc. etc., but excluding fatty acids as the component (C).

Hydrocarbon oils such as isododecane, isohexadecane, light liquid isoparaffin, liquid paraffin, heavy liquid isoparaffin, α-olefin oligomer, squalane, polyisobutylene, and polybutene; olive oil as the component (D) liquid oil; , castor oil, mink oil, macadamia nut oil, avocado oil, medfoam oil; jojoba oil, diisobutyl adipate, 2-hexyldecyl adipate, di-2-heptylundecyl adipate, monoisostearin acid alkyl glycol, isocetyl isostearate, trimethylolpropane triisostearate, ethylene glycol di-2-ethylhexanoate, neopentyl glycol di-2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, tetra-2 -Pentaerythritol ethylhexanoate, cetyl 2-ethylhexanoate, oleyl oleate, octyldodecyl oleate, decyl oleate, neopentyl glycol dicaprate, propylene glycol dicaprate, triethyl citrate, 2-ethylhexyl succinate, stearic acid isocetyl, butyl stearate, diisopropyl sebacate, di-2-ethylhexyl sebacate, cetyl lactate, myristyl lactate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, 2-heptylundecyl palmitate, di Pentaerythritol fatty acid ester, isononyl isononanoate, isotridecyl isononanoate, isopropyl myristate, isopropyl palmitate, 2-octyldodecyl myristate, 2-hexyldecyl myristate, myristyl myristate, hexyldecyl dimethyloctanoate, ethyl laurate, laurin Hexyl Acid, 2-Ethylhexyl Methoxycinnamate, Diisostearyl Malate, Glyceryl Tri-2-Ethylhexanoate, Glyceryl Caprylic Caprate, Glyceryl Tricaprate, Glyceryl Triisostearate, Diglyceryl Diisostearate, Triisostearin Diglyceryl acid, diglyceryl tetraisostearate, decaglyceryl decaisostearate, glyceryl triisopalmitate, glyceryl trimyristate, diglyceryl myristate isostearate, tridecyl trimellitate, 2-octyl N-lauroyl-L-glutamate Ester oils such as dodecyl ester and N-lauroyl-L-glutamic acid di(phytostearyl/2-octyldodecyl); higher alcohols such as oleyl alcohol, isostearyl alcohol, octyldodecanol and decyltetradecanol; low degree of polymerization Silicone oils such as dimethylpolysiloxane, highly polymerized dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, fluorine-modified organopolysiloxane; perfluorodecane, perfluorooctane, perfluoropoly fluorine-based oils such as ethers; and oils such as lanolin acetate, lanolin fatty acid isopropyl, and lanolin derivatives such as lanolin alcohol. One or more of these can be appropriately selected and used as the component (D).

In the present invention, the component (D) preferably contains at least an ester oil from the viewpoint of the appearance transparency and makeup-removing effect of the oil-based cleanser when mixed with water, and the stability over time. It is more preferable to contain it, and it is even more preferable to consist only of an ester oil and a hydrocarbon oil. Moreover, in the present invention, it is preferable that the content of the ester oil in the component (D) is 50% or more.

In addition to the essential ingredients described above, the oily cleanser of the present invention may optionally contain ingredients that are used in ordinary cosmetics within quantitative and qualitative ranges that do not impair the effects of the present invention. . For example, oily components other than components (C) and (D), surfactants other than components (A) and (B), powders, water-soluble polymers, water-based components such as moisturizers, antioxidants, and beauty ingredients. , preservatives, fragrances, cooling agents, and the like.

The oil-based cleansing agent of the present invention is a uniform mixture of an oil-based component and a surfactant, exhibits a transparent appearance, and preferably does not substantially contain water. The phrase "substantially free" as used in the present invention means that it may be contained within a range that does not impair the effects of the present invention. In the oily detergent of the present invention, the content of water in the oily detergent is preferably 3% or less, more preferably 1% or less, even more preferably 0.5% or less, from the viewpoint of stability over time. 0.1% or less is particularly more preferred.

As for the properties of the oil-based detergent of the present invention, it can be implemented in various forms such as liquid, gel, and semi-solid. Among them, the effect of the present invention is exhibited more effectively when it is liquid. point is preferable. Here, the liquid state has a viscosity of 15,000 mPa s or less, preferably 10,000 mPa s or less, more preferably 7,000 mPa s or less, as measured at 25° C. using a Brookfield rotational viscometer. It preferably means that it is 5000 mPa·s or less.

Moreover, the method for producing the oil-based detergent of the present invention is not particularly limited, and it is prepared by a conventional method. For example, it can be prepared by uniformly mixing and dissolving component (A) and component (B), or component (C) and component (D), respectively, and then mixing the two.

The oily detergent of the present invention can be applied to cleansing agents, facial cleansers, shampoos, body soaps, hand soaps, massage agents, peeling agents and the like. Cleansing agents and facial cleansers are preferred from the viewpoint that the effects of the present invention can be realized.

Examples 1 to 11 and Comparative Examples 1 to 3: Oil-based cleansing agent An oil-based cleansing agent having the composition shown in Table 1 below was prepared by the following manufacturing method, and the appearance transparency when mixed with water, stability over time (60 ° C. / 4 weeks ), and the makeup-removing ability depending on the presence or absence of water contamination was evaluated according to the following evaluation methods and criteria. The samples that were opaque immediately after production and were difficult to evaluate were indicated as "-".

(Production method)
A: Components (5) to (8) are uniformly mixed.
B: Components (1) to (4) and (9) are uniformly mixed.
C: A and B were mixed to obtain an oily cleansing agent.

[Evaluation method 1] Appearance transparency when mixed with water Regarding the appearance transparency when mixed with water, after mixing 20 parts of purified water with 100 parts of the oily cleansing agents of Examples 1 to 11 and Comparative Examples 1 to 3 , and compared with each sample before mixing with water, and visually observed the change in the appearance color. Evaluation was made according to the following criteria.

[criterion]
[Judgment]: [Evaluation]
◎: No change in appearance transparency 〇: Slight difference, but transparency is maintained △: Appearance is bluish white, loss of appearance transparency is observed slightly ×: Appearance transparency disappears, and cloudiness due to emulsification is observed.

[Evaluation method 2] Stability over time For stability over time, each sample of Examples 1 to 11 and Comparative Examples 1 to 3 was placed in a glass container, sealed, and stored at a constant temperature of 60 ° C. for 4 weeks. Each sample returned to (25° C.) was visually observed and evaluated according to the following criteria.

[criterion]
[Judgment]: [Evaluation]
◎: Separation is not observed ○: Slight separation is observed ×: Separation is observed

[Evaluation method 3] Make-up removal A water-in-oil liquid foundation prepared according to the following formulation and manufacturing method was applied to the forearm by 20 cosmetic evaluation specialist panels. A use test of 1 to 3 oil-based cleansing agents was conducted. The quality of makeup removal after rinsing was evaluated as "makeup removal (dry)" in 5 grades according to the following evaluation criteria. After that, the average score of all the panels was determined according to the following criteria. The same evaluation was performed using each sample mixed with purified water used in evaluation method 1, and was evaluated as "makeup removal (wet)". In addition, "-" was indicated for samples for which evaluation was difficult due to a decrease in stability.

(Prescription for water-in-oil liquid foundation)
(Component) (%)
1. Polyoxyethylene methyl siloxane, polyoxypropylene,
Oleylmethylsiloxane/dimethylsiloxane copolymer (Note 2) 2
2. PEG-3 Dimethicone (Note 3) 1
3. Decamethylcyclopentasiloxane 20
4. Siliconized talc (Note 4) 5
5. Silicone treated red iron oxide (Note 4) 0.5
6. Silicone treated yellow iron oxide (Note 4) 0.5
7. Silicone-treated black iron oxide (Note 4) 0.5
8. Silicone treated titanium oxide (Note 4) 10
9. Glyceryl tri-2-ethylhexanoate 10
10. Sorbitan sesquioleate 0.5
11. Remaining amount of purified water 12. sodium chloride 0.5
13.1,3-butylene glycol 10
14. Ethanol 5
15. Preservative (methyl paraoxybenzoate) 0.1
16. Perfume 0.2
(Note 2) KF-6026 (manufactured by Shin-Etsu Chemical Co., Ltd.)
(Note 3) KF-6015 (manufactured by Shin-Etsu Chemical Co., Ltd.)
(Note 4) Dimethylpolysiloxane (20CS) 2% treatment

(Method for producing water-in-oil liquid foundation)
(1) Components 1 to 3 are uniformly mixed.
(2) Components 4 to 10 are uniformly dispersed with a roller.
(3) Add (2) to (1) above and mix uniformly.
(4) Components 11 to 16 were added to (3) above and emulsified to obtain a water-in-oil liquid foundation.

[Evaluation criteria]
[Rating]: [Evaluation result]
5 points: very good 4 points: good 3 points: fair 2 points: somewhat poor 1 point: poor [Criteria]
[Judgment]: [Average score]
◎: 4.0 or more ○: 3.5 to less than 4.0 △: 1.5 to less than 3.5 ×: 1.5 or less

As is clear from the results in Table 1, the oil-based cleansing agents of Examples 1 to 11 of the present invention were excellent in appearance transparency when mixed with water, stability over time, and ease of makeup removal.
On the other hand, in Comparative Example 1 in which component (B) was blended instead of component (A), makeup removal and stability over time were good without water contamination, but appearance transparency was lost due to water contamination. However, makeup removal was inferior due to water contamination. Moreover, in Comparative Example 2 in which another surfactant was blended instead of the component (B), the same tendency as in Comparative Example 1 was observed. Comparative Example 3, in which component (C) was not blended, was opaque immediately after production and was inferior in stability over time.

Example 12: Cleansing Oil (ingredient) (%)
1,2-ethylhexanoate cetyl 30.0
2. Glyceryl tri-2-ethylhexanoate Remainder 3. Propylene glycol dicaprate 5.0
4. Isopropyl myristate 1.0
5. Jojoba oil 3.0
6. Isotridecyl isononanoate 1.0
7. Diisostearyl malate 1.0
8. Mineral oil (Note 5) 10.0
9. Dimethicone (Note 6) 3.0
10. Cyclomethicone (Note 7) 3.0
11. Polyglyceryl-6 dicaprate 10.0
12. PEG-8 glyceryl isostearate 10.0
13. BHT 0.02
14. Phenoxyethanol 0.05
15. Perfume 0.01
16. Ethanol 1.0
17. Isostearic acid 3.0
(Note 5) KLEAROL (manufactured by Sonneborn)
(Note 6) KF-96A (6CS) (manufactured by Shin-Etsu Chemical Co., Ltd.)
(Note 7) SH245FLUID (manufactured by Toray Dove Corning)

(Production method)
A: Components (11) and (12) are uniformly mixed and dissolved.
B: Components (1) to (10) and (13) to (17) were uniformly mixed, and added to A and mixed to obtain a cleansing oil.

(result)
The cleansing oil of Example 12 was excellent in stability immediately after production, maintenance of external transparency when mixed with water, stability over time, and ease of makeup removal when mixed with water.

Example 13: Facial cleanser (ingredient) (%)
1,2-ethylhexanoate cetyl 30.0
2. Glyceryl tri-2-ethylhexanoate Remainder 3. Propylene glycol dicaprate 5.0
4. Jojoba oil 3.0
5. Isotridecyl isononanoate 1.0
6. Mineral oil (Note 5) 10.0
7. Polyglyceryl-6 dicaprate 10.0
8. PEG-8 glyceryl isostearate (Note 6) 10.0
9. BHT 0.02
10. Phenoxyethanol 0.05
11. Perfume 0.01
12. Ethanol 1.0
13. Isostearic acid 3.0
14. Linoleic acid 1.0

(Production method)
A: Components (7) and (8) are uniformly mixed and dissolved.
B: Components (1) to (6) and (9) to (14) were uniformly mixed, and added to A and mixed to obtain a face wash.

The facial cleanser of Example 13 was excellent in stability immediately after production, maintenance of external transparency when mixed with water, stability over time, and ease of makeup removal when mixed with water.

Claims (5)

An oil-based detergent containing the following components (A) to (D), wherein the total content of the component (A) and the component (B) is 10 to 35% by mass.
(A) polyglycerin fatty acid diester (B) fatty acid polyoxyethylene glyceryl having an average HLB of 8 to 10 (C) liquid fatty acid (D) liquid oil (excluding component (C)) The mass ratio of the total content of the component (A) and the component (B) to the content of the component (C); {(A) + (B)} / (C) is 2.5 to 10 Item 1. The oily cleanser according to item 1. 3. The oil-based detergent according to claim 1, wherein the component (B) is polyoxyethylene glyceryl isostearate having an average number of added moles of ethylene oxide of 4 to 20. The oily detergent according to any one of claims 1 to 3, wherein the component (C) is isostearic acid. The oil-based oil according to any one of claims 1 to 4, wherein the component (D) contains at least one ester oil, and the content of the ester oil in the component (D) liquid oil is 50% by mass or more. cleaning fee.