JP2023048020A - W/o type emulsified cosmetic or external preparation - Google Patents

Abstract

To provide a W/O type emulsified cosmetic or an external preparation which can be spread with a light force when applied, has good compatibility with the skin, and does not cause whitening.SOLUTION: The above problems are solved by using polyglycerly isostearate and polyglycerly polyricinoleate.SELECTED DRAWING: None

Description

TECHNICAL FIELD The present invention relates to a W/O emulsified cosmetic composition or an external preparation.

W/O emulsion compositions form a water-repellent oil film on the surface of the skin when applied to the skin to protect the skin for a long period of time, and are therefore widely used in sunscreens and emulsion applications. there is Sunscreens contain inorganic powders such as titanium oxide and zinc oxide as UV scattering agents. Problems such as floating (whiteness remaining on the skin) may occur.

As a means for solving the above problems, there is a method of using bis-(glyceryl/lauryl)glyceryl lauryl dimethicone as an oil agent as a W/O emulsified cosmetic that prevents whitening during application (Patent Document 1). It has been shown that whitening can be solved and cleaning performance is improved by blending, but no study has been made on the feeling of use of cosmetics when inorganic powder such as an ultraviolet scattering agent is blended. There is room for improvement in terms of compatibility between the absence of whitening during application of cosmetics and the feel of use by blending inorganic powder into W/O emulsions.

JP 2020-007379 A

The problem to be solved by the present invention is to provide a W/O emulsified cosmetic or external preparation containing inorganic powder or the like, which can be spread with a light force when applied, has good compatibility with the skin, and does not cause whitening. is to provide

As a result of intensive studies to solve the above problems, the present inventors have found that polyglyceryl isostearate and polyglyceryl polyricinoleate are added as emulsifiers to W/O emulsified cosmetics or external preparations containing powders such as pigments. The inventors have found that the above problems can be solved by using them, and have completed the present invention.

That is, the present invention makes it possible to prepare a cosmetic composition having excellent usability by using two kinds of specific polyglycerin fatty acid esters together as an emulsifier for a powder-containing W/O emulsified cosmetic composition or an external preparation. It is a thing.

Modes for carrying out the present invention will be described in more detail below, but the scope of the present invention is not limited to this embodiment, and a mode in which changes and the like are made within a range that does not impair the spirit of the present invention. also belongs to the present invention. In addition, "-" in the notation representing the range includes the upper limit and the lower limit.

The polyglyceryl isostearate of component (A) is an ester of polyglycerin having an average degree of polymerization of 2 to 10, more preferably 2 to 4, calculated from isostearic acid and hydroxyl groups. Diglyceryl monoisostearate, diglyceryl diisostearate, diglyceryl tetraisostearate, tetraglyceryl diisostearate and the like are included, and one or more of these are used. Trade names include IS-201P and IS-401P (both manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.). Among these, IS-201P (diglyceryl monoisostearate) is preferably used. Although the concentration of component (A) in the W/O emulsified cosmetic composition or external preparation of the present invention is not particularly limited, it is preferably contained in an amount of 0.5 to 3% by weight.

The polyglyceryl polyricinoleate of component (B) is an ester of condensed ricinoleic acid and polyglycerol having an average degree of polymerization of preferably 2 to 10, more preferably 4 to 6, calculated from the hydroxyl value. Trade names include CR-350H, CR-310, CR-500, and CRS-75 (manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.). Among these, CRS-75 (polyglyceryl-6 polyricinoleate) is preferably used. The concentration of component (B) in the W/O emulsified cosmetic or external preparation of the present invention is not particularly limited, but is preferably 0.1 to 3% by weight.

Here, the average degree of polymerization is the average degree of polymerization (n) of polyglycerin calculated from the hydroxyl value obtained by terminal group analysis. Specifically, it is calculated from the following formulas (1) and (2).
Molecular weight = 74n + 18 (1)
Hydroxyl value = 56110 (n + 2) / molecular weight (2)

The hydroxyl value in the above formula (2) is a numerical value that is an index of the number of hydroxyl groups contained in polyglycerin, and the amount of acetic acid required to acetylate the free hydroxyl groups contained in 1 g of polyglycerin is The number of milligrams of potassium hydroxide required to combine. The number of milligrams of potassium hydroxide is calculated in accordance with the Japan Oil Chemistry Society compilation "Establishment of the Japan Oil Chemistry Society, Standard Oil Analysis Test Method, 2003 Edition".

The weight ratio of components (A) and (B) in the W/O emulsified cosmetic composition or external preparation of the present invention is such that (A)/(B) is contained at a ratio of 19/1 to 1/3. is preferred, and it is particularly preferred that (A)/(B) is used in a ratio of 19/1 to 1/1. When (A)/(B) are contained at a ratio of 19/1 to 1/3, a W/O type emulsion composition with low viscosity and fine emulsion particles can be obtained.

The liquid oil of the component (D) refers to an oil that is in a liquid state at 25° C., and includes, but is not limited to, hydrocarbons, ester oils, vegetable oils, silicone oils, and the like.
Examples of hydrocarbons include liquid paraffin, paraffin, squalane, squalene, ozokerite, pristane, ceresin, vaseline, microcrystalline wax and the like.
Examples of ester oils include isotridecyl isononanoate, isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, Cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, oleyl oleate, acetoglyceride, 2-heptylundecyl palmitate, glyceryl tri-2-ethylhexanoate, glyceryl triisostearate, cetyl 2-ethylhexenoate, tri (Caprylic/capric) glyceryl, ethylene glycol distearate, N-lauroyl sarcosine, glyceryl triisostearate, diisostearyl malate, ethylene glycol monostearate and the like.
Vegetable oils include safflower oil, olive oil, castor oil, avocado oil, sesame oil, rosehip oil, meadowfoam oil, persic oil, tea tree oil, peppermint oil, corn oil, rapeseed oil, sunflower oil, wheat germ oil, linseed oil. oil, cottonseed oil, soybean oil, peanut oil, rice bran oil and the like.
Examples of silicone oils include cyclopentasiloxane, dimethylpolysiloxane, methylphenylpolysiloxane, diphenylpolysiloxane, and methylhydrogenpolysiloxane.

The inorganic powder of component (E) is not particularly limited. Black, titanium dioxide, zinc oxide, alumina, silica, fumed silica (ultrafine silicic anhydride), titanium mica, fish scale foil, boron nitride, photochromic pigment, synthetic fluorine phlogopite, fine particle composite powder, gold, aluminum, etc. inorganic powders and powders obtained by making them hydrophobic by surface treatment.
The ultraviolet absorber is not particularly limited, but includes, for example, para-aminobenzoic acid-based ultraviolet absorbers, anthranilic acid-based ultraviolet absorbers, salicylic acid-based ultraviolet absorbers, cinnamic acid-based ultraviolet absorbers, benzophenone-based ultraviolet absorbers, and sugar-based ultraviolet absorbers. UV absorbers, 2-(2'-hydroxy-5'-t-octylphenyl)benzotriazole, 4-methoxy-4'-t-butyldibenzoylmethane and the like.

The aqueous component used in the W/O emulsified cosmetic composition or topical preparation of the present invention is not particularly limited, but polyhydric alcohols such as erythritol, glycerin, xylitol, diglycerin, ethanol, dipropylene glycol, sorbitol, Trehalose, 1,3-butylene glycol, propylene glycol, 1,2-pentanediol, polyethylene glycol, polyoxyethylene glycerin, polypropylene, polyoxypropylene glyceryl ether, polyoxypropylene diglyceryl ether, polyoxypropylene butyl ether, polyoxyethylene・Polyoxypropylene butyl ether, polyoxyethylene methyl glucoside, polyglycerin, maltitol, mannitol, etc. can be blended.

The oily component used in the W/O emulsified cosmetic composition or external preparation of the present invention is not particularly limited, but examples include higher alcohols such as cetanol, myristyl alcohol, oleyl alcohol, lauryl alcohol, cetostearyl alcohol, stearyl alcohol, arachyl alcohol, behenyl alcohol, jojoba alcohol, chimyl alcohol, batyl alcohol, hexyldecanol, isostearyl alcohol, 2-octyldodecanol, dimer diol and the like. Lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, behenic acid, undecylenic acid, 12-hydroxystearic acid, palmitoleic acid, oleic acid, linoleic acid, linoleic acid, erucic acid, docosahexaenoic acid, eicosapentaene Fatty acids such as acid, isohexadecanoic acid, anteisohenicosanoic acid, long chain branched fatty acid, dimer acid, hydrogenated dimer acid; candelilla wax, carnauba wax, rice wax, magnolia wax, beeswax, montan wax, ozokerite , ceresin, paraffin wax, microcrystalline wax, petrolatum, Fischer-Tropsch wax, polyethylene wax, ethylene-propylene copolymer waxes; cacao butter, shea butter, coconut oil and other vegetable oils; beef tallow, milk fat, horse fat, Animal fats and oils such as egg yolk oil; Animal waxes such as whale wax, lanolin, and orange roughy oil; Oily gels such as dextrin palmitate, (behenate/eicosandioate) glyceryl, disteardimonium hectorite, etc. agents and the like.

In addition, ingredients used in ordinary cosmetics and external preparations can be contained within a range that does not impair the effects of the invention. For example, inorganic salts such as sodium, potassium, calcium, aluminum, zinc, magnesium hydrochlorides and sulfates, hydroxy acids such as acetic acid, lactic acid, malic acid, citric acid, succinic acid, polyvalent acids, alkali metals, etc. Organic salts of salts with, alkyl sulfates, polyoxyethylene alkyl ether sulfates, N-acyl amino acid salts, alkyl ether carboxylates, fatty acid soaps, alkyl phosphates, polyoxyethylene alkyl ether phosphates, N- Anionic surfactants such as acyl taurine salts, betaine acetate type amphoteric surfactant, imidazoline type amphoteric surfactant, alkylamidopropyl betaine type amphoteric surfactant, alkylhydroxysulfobetaine type amphoteric surfactant, alkylcarboxymethylhydroxyethylimidazoly Amphoteric active agents such as nium betaine type amphoteric active agents and alkyldimethylamine oxides, propylene glycol fatty acid esters, glycerin fatty acid esters, polyoxyethylene glycerin fatty acid esters, sucrose fatty acid esters, sorbitan fatty acid esters, polyoxyethylene rubitan fatty acid esters , polyoxyethylene rubit fatty acid ester, polyoxyethylene lanolin, polyoxyethylene lanolin alcohol, polyoxyethylene sorbitol beeswax, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene sterol, polyoxyethylene hydrogenated sterol , nonionic surfactants such as polyoxyethylene alkyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, polyethylene glycol fatty acid esters, alkyl glyceryl ethers, alkyl polyglycosides, alkyl alkanolamides, cationic surfactants such as alkyl ammonium salts and amidoamines. Surfactants, lecithin derivatives such as hydrogenated soybean phospholipids and hydroxylated soybean phospholipids, organic low-molecular powders such as N-acyllysine, natural organic powders such as starch, silk powder and cellulose powder, nylon powder, Synthetic polymer powder such as polyethylene powder, Red No. 201, Red No. 202, Red No. 226, Red No. 228, Orange No. 203, Orange No. 204, Blue No. 404, Yellow No. 401, Red No. 3, Red No. 104, Red Organic pigment powders such as No. 106, Orange No. 205, Yellow No. 4, Yellow No. 5, Green No. 3 and Blue No. 1, glyceryl monolaurate, glyceryl monoundecylenate, glyceryl monomyristate, glyceryl monostearate, monoisostearin glyceryl acid, glyceryl monooleate, glyceryl distearate, polyglyceryl (diisostearate/polyhydroxystearate/sebacate), decaglyceryl (isostearate/succinate), sorbitan monolaurate, sorbitan monooleate, sorbitan sesquioleate, sorbitan fatty acid esters such as sorbitan trioleate; powder dispersants such as polyhydroxystearic acid, castor oil fatty acid condensates, and 1,2-hydroxystearic acid condensates; edetate; Chelating agents such as polyphosphates and gluconic acid, benzoates, photosensitizers, parabens, preservatives such as phenoxyethanol, salicylic acid, sorbic acid, isopropylmethylphenol, arbutin, ellagic acid, kojic acid, ascorbate derivatives whitening agents, vitamins, amino acids, glycyrrhizic acid derivatives, plant extracts, fragrances, essential oils, pH adjusters and the like can be blended.

The W/O type emulsified cosmetic or external preparation of the present invention also includes quasi-drugs. Cosmetics include cleansing creams, cleansing milks, cleansing lotions, cleansing liquids, facial cleansing creams, facial cleansing foams, massage creams, cold creams, skin creams, skin gels, milky lotions, lotions, packs, serums, aftershave lotions, etc. Skin care cosmetics, sunscreens, body shampoos, soaps, body lotions, body creams, bath agents, body care cosmetics such as hand creams, foundations, makeup bases, eye shadows, eyeliners, mascara, blushes, powders, eyebrows, etc. Hair cosmetics such as makeup cosmetics, hair shampoos, hair rinses, conditioners, treatments, hair liquids, hair tonics, hair lotions, hair creams, hair dyes, and hair styling agents. Examples of external preparations include various ointments, hair restorers, toothpastes, disinfectants, and the like, and can be applied regardless of product form.

EXAMPLES The present invention will be described in more detail with reference to Examples and Comparative Examples below, but the present invention is not limited to these Examples.

<Examples 1 to 3, Comparative Examples 1 to 3>
A W/O emulsion composition was prepared using the components and blending ratios shown in Table 1, and the viscosity and texture were evaluated.

[Preparation of W/O type emulsion composition (sunscreen cream)]
First, phase A in Table 1 was weighed into a 300 mL beaker, heated and homogenized. Next, phase C was added under room temperature conditions and stirred at 1000 rpm for 3 minutes using a Disper mixer (Homo Disper, Model 2.5, manufactured by Primix Co., Ltd.). Phase B was added thereto at a stirring speed of 1000 rpm over 5 minutes, and the mixture was stirred at a stirring speed of 2000 rpm for 3 minutes and further at 2500 rpm for 1 minute to obtain a W/O emulsion composition.

[sensory evaluation]
The W/O emulsified compositions of Examples 1 to 3 and Comparative Examples 1 to 3 were applied to the inner arms of five healthy male and female panelists, and the spreadability, penetration, and absence of whitening at the time of application were evaluated. Sensory evaluation was made. A sample that spreads well with a light force when applied, is easy to blend in, and has no whitening was evaluated relative to the score of 5, and the average score of 5 people was calculated and evaluated according to the following criteria. Table 1 shows the results.
(Evaluation criteria)
○: 4.0 points or more △: 2.0 points or more and less than 4.0 points ×: less than 2.0 points

※ポリリシノレイン酸ポリグリセリル：ＣＲＳ－７５（阪本薬品工業株式会社製）
モノイソステアリン酸ジグリセリル：ＩＳ－２０１Ｐ（阪本薬品工業株式会社製）
（イソステアリン酸／コハク酸）ポリグリセリル－１０：ＳＣＩＳ－１０１（阪本薬品工業株式会社製）

* Polyglyceryl polyricinoleate: CRS-75 (manufactured by Sakamoto Pharmaceutical Co., Ltd.)
Diglyceryl monoisostearate: IS-201P (manufactured by Sakamoto Pharmaceutical Co., Ltd.)
(Isostearic acid/succinic acid) Polyglyceryl-10: SCIS-101 (manufactured by Sakamoto Pharmaceutical Co., Ltd.)

The W/O emulsified compositions of the examples could be spread with a light force when applied, had a penetrating feeling, and fully satisfied the evaluation criteria of no whitening. On the other hand, the evaluation results for the compositions of Comparative Examples were insufficient.

<Formulation Example 1> Sunscreen Phase A Polyglyceryl Isostearate-2 1.2
Polyglyceryl-6 polyricinoleate 0.2
Cyclopentasiloxane 7.5
Squalane 2.0
Isotridecyl isononanoate 1.0
Disteardimonium Hectorite/Cyclopentasiloxane/Propylene Carbonate
5.6
Silica 0.5
Phase B 1,3-butylene glycol 6.0
Ethanol 3.0
sodium chloride 0.5
water 50.5
Phase C
(Isostearic acid/succinic acid) Polyglyceryl-10 0.6
Zinc oxide 8.4
Isotridecyl isononanoate 9.0
Titanium oxide 4.0
Total amount 100.0

Pre-dispersed and homogenized phase C was added to phase A homogenized at room temperature and homogenized. At room temperature, the homogenized B phase was gradually added to the (A+C) phase to emulsify. The sunscreen obtained in Formulation Example 1 could be spread with a light force when applied, and had good penetration and non-sticky feel.

W/O emulsified cosmetics or external preparations containing powders such as pigments use polyglyceryl isostearate and polyglyceryl polyricinoleate as emulsifiers. It is excellent in feeling of use without whitening, and can be used in a wide range of applications such as foundation, sunscreen cosmetics, and skin care cream.

Claims (5)

A W/O emulsified cosmetic or preparation for external use, characterized by containing the following components (A), (B), (C), (D) and (E).
Ingredients: (A) Polyglyceryl isostearate (B) Polyglyceryl polyricinoleate (C) Water (D) Liquid oil (E) One or more powders selected from the group consisting of inorganic powders and UV absorbers 2. The W/O emulsified cosmetic or external application according to claim 1, wherein the weight ratio of component (A) to component (B) is (A)/(B)=17/3 to 1/4. agent. 3. The W/O emulsified cosmetic or external preparation according to claim 1, wherein the total amount of component (A) and component (B) in the cosmetic is 1 to 30% by weight. 4. The W/O emulsified cosmetic composition or external preparation according to any one of claims 1 to 3, wherein component (A) is polyglyceryl-2 monoisostearate. 5. The W/O emulsified cosmetic composition or external preparation according to any one of claims 1 to 4, wherein the component (B) is polyglyceryl-6 polyricinoleate.