JP3453110B2 - Solid water-in-oil emulsion cosmetic - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention provides a uniform and stable emulsified system without using a surfactant, does not cause deterioration of makeup persistence due to sweat, sebum, etc., and imparts a refreshing feeling upon application. In addition, the present invention relates to a solid water-in-oil type emulsion cosmetic having portability, usability and convenience.

[0002]

2. Description of the Related Art Many makeup cosmetics which are normally used by cosmetic users and can be carried are solid compositions represented by lipsticks and powder foundations. The feature of this type of solid cosmetics is that they are easy to carry. For example, since the powder foundation is filled in a thin compact container with a mirror, it has the advantage that it does not get in the way even if it is always carried, and that the makeup can be reapplied on the go. On the other hand, a liquid type composition such as a liquid foundation is filled in a bottle-shaped container without a mirror, so that there is inconvenience in makeup and makeup repair on the go,
There is a problem with portability, such as fear of trouble such as liquid leakage.

On the other hand, in terms of usability, since the emulsion type liquid composition can contain a large amount of water, a refreshing feeling upon application can be imparted. However, since most solid cosmetics are powder compression moldings containing no volatile component or oily solid moldings, "freshness" and "freshness" at the time of application cannot be obtained.

[0004]

A solid water-in-oil type emulsified cosmetic is one of the cosmetics which has portability and can give a refreshing feeling when applied (for example, JP-A-2-88511).
JP-A-3-261703, JP-A-4-30551
3 gazette). This solid water-in-oil type emulsion cosmetic which has no fluidity and solidifies (including paste) at room temperature is
A composition containing water, powder and solid wax, emulsified and solidified using a surfactant. Here, the surfactant is essential for emulsification, but since it remains on the skin after makeup, re-emulsification by sweat, sebum, etc., deteriorated the durability of makeup. Further, in the solid composition containing no surfactant, the components were separated and did not solidify uniformly, and moreover water separated.

An object of the present invention is to provide a solid water-in-oil type emulsified cosmetic excellent in stability and makeup lasting as a solid emulsified cosmetic, giving a refreshing feeling upon application, and having portability and ease of use. To provide a fee.

[0006]

Means for Solving the Problems The present inventor can obtain a uniform solidified emulsion by using a composition comprising an oil, water and a solid wax in combination with a water-soluble salt without using a surfactant. The cosmetics have extremely good stability, good makeup lasting when applied to the skin, and excellent feeling of use such as "cooling feeling". It has been found to have the advantage that the range of choices for the shape is widened.

The present invention provides a solid water-in-oil type emulsion cosmetic containing an oil agent, water, a solid wax and a water-soluble salt and containing no surfactant.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The oil agent used in the present invention is 2
Liquid silicone oil, hydrocarbon oil, fats and oils, fatty acids, higher alcohols, fatty acid esters, which have fluidity at 5 ° C
Fluorine oil agents and the like can be mentioned. Specifically, dialkylpolysiloxanes such as dimethylpolysiloxane, dimethylcyclopolysiloxane, diethylpolysiloxane, alkylarylpolysiloxanes such as methylphenylpolysiloxane, diarylpolysiloxane, methylhydrogenpolysiloxane, higher fatty acid-modified organopolysiloxane. , Higher alcohol-modified organopolysiloxane, amino-modified polysiloxane, fluorine-modified polysiloxane, trimethylsiloxysilicate and other silicone oils; jojoba oil, castor oil, lanolin, isostearyl alcohol, oleyl alcohol, oleic acid, isostearic acid, squalane, fluid Paraffin, perfluoropolyether; isopropyl myristate, octyldodecyl myristate, trimethylol propanate Isostearate, ester oils such as diisostearyl malate and the like.

Of these oil agents, silicone oil, squalane, liquid paraffin, fluorine oil agent and ester oil are preferable.

[0010] In particular, when it is desired to use cosmetics that are refreshing without stickiness and have a long lasting makeup, a silicone oil that is volatile at room temperature and a non-volatile silicone oil or a fluorine-modified polysiloxane It is preferable to use it in combination with a fluorinated oil agent such as perfluoropolyether, and the content thereof is preferably such that the weight ratio of volatile component: nonvolatile component is 9: 1 to 2: 7.

Two or more of these oil agents may be used in combination in the solid water-in-oil type emulsion cosmetic of the present invention. The content of the oil agent in the entire composition is 10 to 90% by weight (hereinafter simply referred to as "content of oil agent"). %), Preferably 20 to 85%, particularly preferably 2
It is preferable to be 5 to 80%. In addition to the above oil agents, 2
An oily component that is solid or pasty at 5 ° C. (for example, myristic acid, stearic acid, cetanol, stearyl alcohol, etc.) can also be used together if it can be heated and melted together with the solid wax described below.

The solid wax used in the present invention is 2
It does not have fluidity at 5 ° C, especially does not have fluidity at 50 ° C. Natural waxes such as carnauba wax and candelilla wax, petroleum waxes such as paraffin wax, microcrystalline wax and polyethylene wax, and ozokerite. Examples thereof include mineral waxes such as ceresin and the like. The type of wax used is selected according to the type of oil agent used, but natural wax alone or a combination of natural wax and petroleum wax or mineral wax gives good hardness. Shape retention is suitable and preferred.

Preferred solid waxes include candelilla wax, carnauba wax and a mixture of microcrystalline wax and polyethylene wax. It is preferable that these solid waxes are mixed with other components in a state of being melted by heating above the melting point.

In the solid water-in-oil type emulsion cosmetic of the present invention, two or more solid waxes may be used in combination, and the solid wax content in the entire composition is 0.5 to 30%. It is preferably 1 to 25%, particularly preferably 2 to 20%.

The solid water-in-oil type emulsified cosmetic composition of the present invention preferably contains 5% or more of water from the viewpoint of a refreshing feeling when used, and 10% or more, more preferably 15 to 60%, and especially 20%. ~
It is preferable to contain 50%.

The water-soluble salt used in the present invention has a pH of 25 ° C.
7 is a salt soluble in 10 g or more in 100 g of water, and examples thereof include oxycarboxylate, amino acid salt, lower carboxylate, carbonate, sulfate, phosphate, monofluorophosphate, and hydrochloride. Is preferably an oxycarboxylate salt, a lower carboxylate salt, a sulfate salt or a phosphate salt, and particularly preferably a sulfate salt. Here, the salt is preferably an alkali metal salt such as sodium or potassium, or an alkaline earth metal salt such as magnesium or calcium.

Particularly preferred specific water-soluble salts are:
Sodium citrate, sodium L-glutamate, potassium acetate, sodium acetate, magnesium acetate, and other acetates, sodium carbonate, aluminum lactate, calcium lactate, and other lactates, magnesium sulfate, sodium sulfate, and other sulfates, and sodium monofluorophosphate. , Disodium hydrogen phosphate and the like. These water-soluble salts are preferably dissolved in water and added.

In the solid water-in-oil type emulsion cosmetic of the present invention,
The water-soluble salt is contained in an amount of 0.2 to 8%, preferably 0.2 to 5%. According to the present invention, by using such a water-soluble salt, it has become possible to provide a solid water-in-oil type emulsion cosmetic without using a conventionally required surfactant.

The solid water-in-oil type emulsion cosmetic of the present invention preferably contains an oil gelling agent in addition to these essential components from the viewpoint of maintaining shape retention.

As the oil gelling agent used here, dibenzylidene sorbitol, tribenzylidene sorbitol,
Condensates of benzaldehydes such as dibenzylidene xylitol, paramethoxybenzylidene sorbitol and pentavalent alcohols; calcium stearate, calcium palmitate, lithium 2-ethylhexanoate, 1
Metal soap such as aluminum 2-hydroxystearate; N-acyl amino acid such as lauroyl glutamic acid dibutyl amide, lauroyl glutamic acid stearyl amide, dicaproyl lysine lauryl amine salt, dicaproyl lysine lauryl ester, dicaproyl lysine lauroyl phenylalanine lauryl amide Derivatives of amides, esters, amine salts, etc .; ester group substitution degree 30
% Dextrin fatty acid ester, which consists of an acid hydrolyzate of starch saturated fatty acid ester, and 12-hydroxystearic acid. These oil gelling agents are preferably added by heating above the melting point or by dissolving in an oil agent.

In the solid water-in-oil type emulsion cosmetic of the present invention, the oil gelling agent is 0.1 to 20%, preferably 1 to 15%.
%, Particularly preferably 2 to 10%, and it is particularly preferred that the weight ratio of oil agent: oil gelling agent is 20: 1 to 3: 1, preferably 15: 1 to 5: 1.

The solid water-in-oil type emulsified cosmetic composition of the present invention contains a hydrophobic powder from the viewpoint that makeup durability such as water resistance, sweat resistance and sebum resistance can be further improved. preferable. The hydrophobic powder also includes a powder whose surface is hydrophobized. The particle size of the hydrophobic powder is 0.01 to 1
It is preferably 50 μm, particularly preferably 0.05 to 100 μm. Especially in products that mix many types of powders, it is extremely important to control the dispersibility of each powder. By doing so, the dispersibility of the powder is homogenized, color separation is suppressed, and stability is improved.

As the powder, iron oxide, titanium oxide, zinc oxide, titanium oxide-zinc oxide composite, particulate titanium oxide, particulate zinc oxide, flaky zinc oxide, zirconium oxide, chromium oxide, cobalt oxide, magnesium oxide, Other than alumina, talc, mica, sericite, kaolin, bentonite, vermiculite, muscovite, synthetic mica, phlogopite, biotite, lithia mica, magnesium carbonate,
Calcium carbonate, diatomaceous earth, magnesium silicate, calcium silicate, aluminum silicate, barium silicate, strontium silicate, hydrous silicic acid, silicic acid anhydride, metal tungstate, hydroxyapatite, zeolite, ceramic powder, clay mineral powder such as montmorillonite, barium sulfate, Inorganic pigments such as dibasic calcium phosphate, iron titanate, ultramarine blue, navy blue, aluminum hydroxide, chromium hydroxide, cobalt titanate, pearl pigments such as titanium oxide coated mica; nylon powder, polyester powder, polyethylene powder, polypropylene powder, polystyrene Powder, polymethylbenzoguanamine powder, polymethylmethacrylate powder, polyurethane powder, tetrafluoroethylene powder, microcrystalline cellulose,
Rice starch, lauroyl lysine, silicone powder, styrene / acrylic copolymer, boron nitride, fish scale foil, laked tar dyes such as red 3, red 4 and red 203, and natural dyes And organic powders such as composite powders obtained by compositing inorganic powders and organic powders; and metal powders such as aluminum powders, stainless powders, and copper powders.

As a method for hydrophobizing the powder, for example, oil or fat is adsorbed on the powder surface, or esterification or etherification is caused by using a functional group such as a hydroxyl group to make the powder lipophilic. And the like, a silicone treatment method using dimethylpolysiloxane or methylhydrogenpolysiloxane, a treatment method with a fluorine compound having a perfluoroalkyl group, and the like.

Of these, silicone treatment and fluorine compound treatment are preferable, and the method of treating the powder surface with a fluorine compound having a perfluoroalkyl group is particularly preferable because it can impart sebum resistance. As the fluorine compound having a perfluoroalkyl group, for example, the following general formula [C _m F _{2m + 1} C _n H _2n O] _y PO (OH) _3-y [wherein m is 3 to 21] Number, n is a number from 1 to 12, y is 1
To a number of 3], polyfluoroalkylphosphoric acid (US Pat. No. 3,632,744), fluoroalkyldi (oxyethyl) amine phosphate (JP-A-62-250074), perfluoroalkyl Group-containing resin (JP-A-55-16209), tetrafluoroethylene resin, perfluoroalcohol, perfluoroepoxy compound, sulfamide type fluorophosphoric acid, perfluorosulfate, perfluorocarboxylate,
Perfluoroalkylsilane (JP-A-2-218603)
Gazette) and the like.

The solid water-in-oil type emulsified cosmetic composition of the present invention can be commercialized in the form of a rod-shaped, lump-shaped, or plate-shaped solid body, or a plate-shaped container filled with the product. Cosmetics,
In particular, makeup cosmetics such as foundations and lipsticks,
Alternatively, it is preferable to use a skin care cosmetic such as a lip balm or a whitening agent in the form of a stick.

[0027]

Example 1 The components shown in Table 1 were mixed by emulsifying the components except water and salt by heating to 75 ° C. and then adding an aqueous salt solution. This was filled in a transparent polystyrene container and cooled to 25 ° C. to produce a solid water-in-oil emulsion cosmetic.

[0028]

[Table 1]

Table 1 shows the results of evaluation according to the following evaluation criteria.
Also described in. (Solidified state) The emulsified cosmetic solidified in the container was visually observed for a fractured surface that was cut in half in the vertical direction. Evaluation ○ Moisture was not separated and the fractured surface was uniformly solidified in white. △ Moisture was slightly separated, and the fractured surface was uniformly solidified in white. × Moisture was observed, and the color and solidification state of the fractured surface were A transparent polystyrene container containing a non-uniform (stability) solid water-in-oil emulsion cosmetic was allowed to stand at 50 ° C. for 1 month, and observed for weight loss, cracking, cracking, or separation. Evaluation ○ No weight loss, cracks, cracks, or separations were observed. △ Some weight loss, cracks, cracks, or separations were observed. × Weight loss, cracks, cracks, or separation was noticeable. When the water-in-water emulsion cosmetic was applied to the face, the spread and refreshing feeling were sensory evaluated. Evaluation ○ 16 or more were evaluated as good △ 6 to 15 were evaluated as good × 5 or less were evaluated as good

As shown in Table 1, the product of the present invention had a good solidified state, was stable even after one month, and had a good spread and refreshing feeling.

[0031] Example 2 Compact emulsion foundation                                                             % Decamethylcyclopentasiloxane 30.0 Fluorine-modified polysiloxane (FSL-300, made by Asahi Glass) 10.0 Octyl methoxycinnamate 5.0 Deodorized refined candelilla wax 5.0 Fluorinated powder *   Fluorine treated titanium oxide 7.0   Fluorine treated red iron oxide 0.3   Fluorine treated yellow iron oxide 1.5   Fluorine treated black iron oxide 0.2   Fluorine treated silicone powder (Tospearl 145A) 11.0 Magnesium sulfate 1.0 1,3-butylene glycol 2.0 Preservatives / fragrances Ion exchange water balance     *: 100 g of powder, 500 mL of deionized water and perfluoroalkyl (average         5.8g of C9) phosphoric acid ester diethanolamine salt is mixed to form a salt.         The product was adjusted to pH 3.0 or less with an acid, washed with water and dried.

A sensory evaluation of the durability of the makeup was carried out by 20 panelists for 5 hours after the application to the face.

[0033] Example 3 Stick-shaped emulsion foundation                                                             % Dimethyl polysiloxane (10cs) 5.0 Decamethylcyclopentasiloxane 20.0 Microcrystalline wax 2.0 (Multi-wax W-445, Witco) Candelilla wax 4.0 Fluorine-modified silicone (FSL-300, made by Asahi Glass) 10.0 Fluorinated powder (manufactured as in Example 2)   Fluorine treated titanium oxide 11.8   Fluorine treated red iron oxide 0.4   Fluorinated yellow iron oxide 1.7   Fluorine treated black iron oxide 0.1   Fluorine treated silicone powder (Tospearl 145A) 12.0   Fluorine treated mica 6.0 Magnesium sulfate 1.5 1,3-butylene glycol 2.0 Preservatives / fragrances Ion exchange water balance

The stick-like emulsified foundation was well spreadable and non-greasy, and was excellent in refreshing feeling, makeup lasting and portability.

[0035] Example 4 Eye shadow                                                             % Perfluoropolyether 10.0 (FOMBLIN HC-04, made by Ausimont) Decamethylcyclopentasiloxane 25.0 Deodorized refined candelilla wax 6.0 Fluorinated powder (manufactured as in Example 2)   Fluorine treated titanium oxide 0.5   Fluorinated yellow iron oxide 2.3   Fluorine treated red iron oxide 0.2   Fluorine treated mica 11.0   Fluorine treated talc 16.0 Magnesium sulfate 2.0 Polyethylene glycol 3.0 Preservatives / fragrances Ion exchange water balance

[0036] Example 5 Lipstick                                                             % Perfluoropolyether 10.0 (FOMBLIN HC-04, made by Ausimont) Decamethylcyclopentasiloxane 20.0 Deodorized refined candelilla wax 5.0 Fluorinated powder (manufactured as in Example 2)   Fluorine treated titanium oxide 0.1   Fluorinated yellow iron oxide 0.25   Fluorine treated red iron oxide 0.75   Fluorine treated mica 10.9   Fluorine treated talc 13.0   Fluorine treated sericite 10.0   Fluorine treated titanium oxide coated mica 5.0 Magnesium sulfate 1.5 1,3-butylene glycol 2.0 Preservatives / fragrances Ion exchange water balance

[0037] Example 6 Lipstick                                                             % Octamethylcyclotetrasiloxane 10.0 Dimethyl polysiloxane (6cs) 30.0 Purified Carnauba Wax No.1 (Made by Noda Wax) 5.0 Deodorized refined candelilla wax 10.0 Silicone treated powder *   Silicone treated red iron oxide 0.2   Silicone treated yellow iron oxide 1.0 Red No. 204 0.8 Dibutylhydroxytoluene Suitable amount Magnesium sulfate 3.0 Preservatives / fragrances Ion exchange water balance     *: 2% coated with methyl hydrogen polysiloxane

[0038] Example 7 Lip Treatment                                                             % Squalane 5.0 Octamethylcyclotetrasiloxane 20.0 Dimethyl polysiloxane (50cs) 15.0 Deodorized refined candelilla wax 10.0 Silicone treated powder *   Silicone treated yellow iron oxide 0.8   Silicone treated red iron oxide 0.2   Silicone treated fine particles titanium oxide 3.0 Glycerin 5.0 Magnesium sulfate 1.5 1,3-butylene glycol 2.0 Sorbitol 0.5 Red No. 202 0.01 Menthol 0.1 Preservatives / fragrances Ion exchange water balance     *: 2% coated with methyl hydrogen polysiloxane

[0039]

The solid water-in-oil type emulsion cosmetic of the present invention comprises:
It is a solid state with no fluidity, has excellent portability, and has good stability of the emulsification system even without the use of a surfactant. It has a "cooling feeling" at the time of application, "spreading", "freshness feeling", etc. It has an excellent feeling of use, long-lasting makeup, and can be mixed with various moisturizers and agents as an aqueous phase component while being solid. Further, due to its excellent stability, the range of container forms to be filled can be expanded.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI A61K 7/02 A61K 7/02 Z 7/025 7/025 7/031 7/031 7/032 7/032 (58) Field (Int.Cl. ⁷ , DB name) A61K ^7/ 00-7/50

Claims (3)

(57) [Claims] 1. A solid water-in-oil type emulsion cosmetic containing an oil, water, a solid wax and a water-soluble salt and containing no surfactant. 2. The solid water-in-oil type emulsified cosmetic composition according to claim 1, further comprising a hydrophobic powder. 3. The solid water-in-oil type emulsified cosmetic composition according to claim 1, further comprising an oil gelling agent.