JP6617254B2 - Sheet cosmetic - Google Patents

Description

  The present invention relates to a sheet-like cosmetic.

  Cosmetics are processed into various forms depending on the application. For example, a sheet-like cosmetic produced by applying or impregnating a cosmetic on a sheet-like base material is usually used for a portable or sample-distributing cosmetic (for example, Patent Documents 1 and 2). . As a method for further improving the appearance, a technique for holding a cosmetic using a sheet-like base material having a three-dimensional shape has been proposed. For example, Patent Document 3 below discloses a cosmetic carrier that molds a base material into a desired three-dimensional shape and maintains a certain shape.

JP 2005-40356 A JP 2009-5919 A International Publication No. 2012/157463

  Conventional sheet-like cosmetics use only the cosmetics fixed on the surface of the sheet-like shape holding body, so that the base material becomes larger according to the amount of cosmetics required, and as a result, the product becomes It becomes bulky. Further, depending on the shape, it is necessary to prepare a complicated shape holding body, which takes time and cost. Further, after use, a large amount of dust is generated which is left unneeded by the holder and the unusable cosmetic adhering to the holder.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a sheet-shaped cosmetic that can maintain a desired shape and can be molded without using a shape holder.

  As a result of intensive studies by the present inventor in order to solve the above-mentioned problems, it is possible to maintain a sufficient shape of an oily cosmetic composition by combining a water-soluble polymer and a hydroxyl group-containing compound having two or more hydroxyl groups in the molecule. The present invention has been completed by finding that it can be molded into a sheet having the property of being able to bend and processed with sufficient toughness.

  That is, the present invention provides a sheet-like cosmetic material that contains an oil, a water-soluble polymer, and a hydroxyl group-containing compound having two or more hydroxyl groups in the molecule, and does not substantially contain moisture.

  By having the above-described configuration, the sheet-shaped cosmetic of the present invention can have a shape retaining property capable of maintaining a desired shape without using a base material and a toughness that can be molded.

  In the sheet-like cosmetic of the present invention, it is preferable that the content of the oil is 25 to 99% by mass based on the total amount of the cosmetic from the viewpoint of improving shape retention and moldability.

  The sheet cosmetic of the present invention can further contain a powder.

  According to the present invention, it is possible to provide a sheet-shaped cosmetic that can maintain a desired shape and can be molded without using a shape holder.

  The sheet-like cosmetic of the present invention can be molded into a complicated shape such as a flower, and can realize a cosmetic excellent in design. In addition, according to the sheet-like cosmetic of the present invention, since it has good toughness, it is possible to realize a cosmetic mask and a tape-shaped cosmetic on which the cosmetic is locally applied.

It is a figure which shows an example of the flower-shaped cosmetics obtained by shape | molding the sheet-like cosmetics of this embodiment. It is a figure which shows the method of evaluating about the shape maintenance property of sheet-like cosmetics.

  The sheet-like cosmetic of the present embodiment contains an oil, a water-soluble polymer, and a hydroxyl group-containing compound having two or more hydroxyl groups in the molecule, and does not substantially contain moisture.

  In the present invention, substantially not containing water means that water is not intentionally added as a component of cosmetics. In addition, about the trace amount water | moisture content accompanying the component which comprises the sheet-like cosmetics of this embodiment, or the water | moisture content generate | occur | produced from the component which comprises a sheet-like cosmetics, it shall not be the water | moisture content mix | blended intentionally.

  In the sheet-form cosmetic of this embodiment, it is preferable that the content of the moisture not intentionally mixed is 1% by mass or less in the cosmetic before being formed into a sheet. The moisture content is stored under room temperature (25 ° C.) at a humidity of 70% or less using a Karl Fischer moisture meter (MKS-510N, manufactured by Kyoto Electronics Industry) within 2 hours. It can be measured by the Karl Fischer method.

  Examples of the water-soluble polymer include polyvinyl pyrrolidone, polyvinyl alcohol, (vinyl pyrrolidone / vinyl alcohol) copolymer, polyacrylamide, carboxymethyl cellulose, mannan, pectin, bee gum, cyclodextrin and the like. From the viewpoint of improving the toughness and moldability of the sheet-form cosmetic material, polyvinylpyrrolidone is preferable. The water-soluble polymer can be used alone or in combination of two or more.

  The content of the water-soluble polymer in the sheet-like cosmetic is preferably 0.5 to 40% by mass, more preferably 1.5 to 30% by mass, and 3.5 to 28% by mass based on the total amount of the cosmetic. Even more preferred.

  In the present embodiment, polyvinylpyrrolidone is used as the water-soluble polymer, and its content is set to 0.5% by mass or more based on the total amount of the cosmetic, whereby it becomes easy to obtain toughness, and is 40% by mass or less. By doing, the fall of the moldability by adhesiveness being too strong can be suppressed.

  Examples of the hydroxyl group-containing compound having two or more hydroxyl groups in the molecule include polyhydric alcohol, polyglycerin-modified silicone oil, polyoxyethylene hydrogenated castor oil, and polyethylene glycol fatty acid ester.

  As a polyhydric alcohol, the polyhydric alcohol generally used for cosmetics etc. can be mix | blended. The number of hydroxyl groups is preferably 2-6. Specific examples of the polyhydric alcohol include, for example, 1,3-butylene glycol, propylene glycol, trimethylene glycol, 1,2-butylene glycol, tetramethylene glycol, 2,3-butylene glycol, pentamethylene glycol. 2-butene-1,4-diol, hexylene glycol, octylene glycol (divalent alcohol), glycerin, trimethylolpropane (trivalent alcohol), pentaerythritol (tetravalent alcohol), xylitol (pentahydric alcohol) ), Sorbitol, mannitol (hexahydric alcohol), dipropylene glycol, triethylene glycol, polypropylene glycol, tetraethylene glycol, diglycerin, polyethylene glycol (hereinafter sometimes referred to as PEG), tri Glycerin, tetraglycerol, polyglycerol (polyhydric alcohol polymer), and the like.

  As PEG, PEG generally used for cosmetics and the like can be blended. In this insulator form, commercially available PEG can be used. As an example of a commercial item, PEG200, PEG300, PEG600, PEG1000, PEG3000, PEG6000 (above, Nikko Chemicals Co., Ltd. product) etc. are mentioned, for example. Among these PEGs, PEG 200 to 600 is preferable.

Polyglyceryl-3 polydimethylsiloxyethyl dimethicone can be used as the polyglycerin- modified silicone oil. As polyoxyethylene hydrogenated castor oil , PEG-60 hydrogenated castor oil can be used .

  A hydroxyl-containing compound can be used individually by 1 type or in combination of 2 or more types.

  From the viewpoint of improving the toughness and moldability of the sheet cosmetic, polyethylene glycol is preferred. In addition, polyethylene glycol having a molecular weight of 280 or more and 4000 or less is preferred, and PEG 300 is particularly preferred from the viewpoint of low hygroscopicity and volatility and further improved moldability.

  The content of the hydroxyl group-containing compound in the sheet-like cosmetic is preferably 0.4 to 35% by mass, more preferably 1.0 to 30% by mass, and further 2.0 to 25% by mass based on the total amount of the cosmetic. Is more preferable.

  In the present embodiment, polyethylene glycol is used as the hydroxyl group-containing compound, and by setting the content to 0.4% by mass or more based on the total amount of the cosmetic, it becomes easy to obtain toughness, and is 35% by mass or less. By doing, the fall of the moldability by adhesiveness being too strong can be suppressed.

  In the sheet-like cosmetic of the present embodiment, the blending ratio of the water-soluble polymer and the hydroxyl group-containing compound is, from the viewpoint of toughness, the mass ratio of the hydroxyl group-containing compound to the water-soluble polymer [hydroxyl group-containing compound] / [water-soluble]. Polymer] is preferably 1/2 to 9/2, and more preferably 4/5 to 2/1.

  In the present embodiment, it is preferable to blend polyvinyl pyrrolidone and polyethylene glycol in the above ratio.

  As the oil, a known oil that is usually blended in cosmetics can be used. Examples thereof include hydrocarbon oils, fats and oils, waxes, higher fatty acids, higher alcohols, ester oils, surfactants, and silicone oils. An oil component can be used individually by 1 type or in combination of 2 or more types.

  Examples of the hydrocarbon oil include polyethylene, liquid paraffin, squalane, and polybutene.

  In the present embodiment, it is preferable to blend polyethylene from the viewpoint of maintaining the shape at a high temperature (for example, 50 ° C.). In this case, the polyethylene content is preferably 18% by mass or more based on the total amount of the cosmetic, and more preferably 20 to 30% by mass from the viewpoint of moldability.

  Examples of the fat include olive oil, castor oil, macadamia nut oil, and evening primrose oil.

  Examples of waxes include candelilla wax, carnauba wax, jojoba oil, and lanolin.

  Examples of higher fatty acids include behenic acid, isostearic acid, and oleic acid.

  When the sheet-form cosmetic of this embodiment contains polyvinylpyrrolidone and polyethylene glycol, it is preferable to use behenic acid because it has excellent solubility in these compounds and improves shape retention. According to these combinations, it is also possible to suppress powdering when the sheet-like cosmetic contains powder.

  Examples of the higher alcohol include behenyl alcohol, olein alcohol, octyldodecanol, and isostearyl alcohol.

  When the sheet-form cosmetic of this embodiment contains polyvinylpyrrolidone and polyethylene glycol, it is preferable to use behenyl alcohol in that it has excellent solubility in these compounds and improves shape retention.

  Examples of ester oils include ethylhexyl palmitate, diisostearyl malate, isopropyl myristate, cetyl 2-ethylhexanoate, isopropyl palmitate, tricapryl / glyceryl caprate, and glyceryl tri-2-ethylhexanoate.

  As the surfactant, for example, glycerin fatty acid esters and alkylene glycol adducts thereof, polyglycerin fatty acid esters and alkylene glycol adducts thereof, sorbitan fatty acid esters and alkylene glycol adducts thereof other than those mentioned as the hydroxyl group-containing compound, Examples thereof include sucrose fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyalkylene alkyl co-modified organopolysiloxane, and polyether-modified organopolysiloxane.

  In the sheet-like cosmetic of the present embodiment, it is preferable to blend a surfactant such as sorbitan sesquiisostearate from the viewpoint of suppressing separation of the water-soluble component and the oil-soluble component.

  In the sheet-like cosmetic of the present embodiment, it is preferable that a surfactant such as PEG-20 sorbitan isostearate, PEG-40 hydrogenated castor oil, or the like is included in terms of improving the shape retention. For the same reason, it is preferable to blend the polyglyceryl-3 polydimethylsiloxyethyl dimethicone mentioned as the hydroxyl group-containing compound.

  In the sheet-like cosmetic of this embodiment, squalene, liquid paraffin, cetyl lactate, octyldodecyl myristate, neopentyl glycol dicaprate, isopropylene palmitate, ethylhexyl palmitate for the purpose of adjusting releasability during molding. It is preferable to blend a low viscosity oil such as From the viewpoint of moldability, ethylhexyl palmitate is more preferable. The viscosity of the low viscosity oil is preferably 30 mPa / s or less at 25 ± 1.0 ° C.

  The content of the low-viscosity oil in the sheet-like cosmetic is preferably 1 to 10% by mass, more preferably 3 to 8% by mass based on the total amount of the cosmetic.

  The content of oil in the sheet cosmetic is preferably 25 to 99% by mass, more preferably 30 to 95% by mass, and still more preferably 40 to 70% by mass based on the total amount of the cosmetic.

  In the present embodiment, from the viewpoint of improving shape retention, the total content of the water-soluble polymer and the hydroxyl group-containing compound is 3 to 50 mass with respect to the total content of the oil, the water-soluble polymer and the hydroxyl group-containing compound. %, More preferably 5 to 50% by mass, still more preferably 20 to 50% by mass.

  The sheet-form cosmetic of this embodiment can further contain powder.

  The powder is not particularly limited as long as it is usually used in cosmetics. Specifically, for example, mica, kaolin, synthetic mica, silica, calcium carbonate, magnesium carbonate, aluminum oxide, bengara, yellow iron oxide, Black iron oxide, cobalt oxide, ultramarine, bitumen, titanium oxide, zinc oxide, pearl pigments (titanium mica, fish scale foil, bismuth oxychloride, etc.), boron nitride, organic pigments (red 228, red 226, blue 404, etc.) ) And polyethylene powder. These powders may be a composite of two or more kinds of powders, and are subjected to a surface treatment by a known method using a silicone compound, a metal soap, an amino acid compound, a fluorine compound, or the like. May be used. These powders can be used alone or in combination of two or more according to the use of the cosmetic.

  The particle size of the powder is preferably 1 μm to 200 μm, more preferably 5 μm to 100 μm, from the viewpoint of improving moldability and color developability. In the present embodiment, from the viewpoint of moldability, it is preferable that a powder of 5 μm to 100 μm is blended by 40% by mass or more based on the total amount of the powder.

  The content of the powder in the sheet-like cosmetic is 0 to 75% by mass on the basis of the total amount of the cosmetic from the viewpoint of achieving both the retainability and toughness of the shape of the sheet-like cosmetic and imparting functions with the powder. Is preferable, 5-70 mass% is more preferable, and 30-60 mass% is still more preferable.

  In the sheet cosmetic of this embodiment, it is preferable to mix | blend a water-insoluble thickener from a viewpoint of suppressing isolation | separation with a water-soluble component and an oil-soluble component. As the water-insoluble thickener, dimethylsilyl silica is preferably used. The content of the water-insoluble thickener is preferably 0.1 to 0.7% by mass on the basis of the total amount of the cosmetic from the viewpoint of achieving both separation suppression and usability.

  The sheet-like cosmetic of this embodiment can further contain an additive within a range not impairing the effects of the present invention. As additives, film forming agents other than the water-soluble polymer, moisturizers other than the hydroxyl group-containing compounds, surfactants other than those listed as the oil, skin conditioners and binders, other than the powder Examples include water-insoluble thickeners, colorants and excipients, pH adjusters, antioxidants, preservatives, antibacterial agents, neutralizers, plant extracts, fragrances, and pigments.

  The sheet-like cosmetic of the present embodiment can be produced, for example, by preparing the cosmetic composition by mixing the above-described components and spreading using a roll, a press machine, a cutting machine or the like. As the cutting machine, for example, Bosca Holland Marble Cheese Curler can be used.

  Mixing can be performed, for example, by stirring each component at a temperature of 80 to 120 ° C. for 1 to 30 minutes using a melting pot.

  The thickness of the sheet cosmetic is appropriately set depending on the application. For example, in the case of a cosmetic mask, the thickness can be 0.005 to 0.2 mm. In the case of a tape-like shape, it can be set to 0.05 to 0.3 mm. In the case of a kneaded rubber-like shape, a desired thickness can be obtained. In the case of forming a thin leaf shape, for example, it can be set to 2000 μm or less, 1000 μm or less, 500 μm or less, 300 μm or less, or 100 μm or less.

  The use of the sheet-like cosmetic of the present embodiment is not particularly limited, but for example, it may be used for applications such as foundation, cheek, face color, cosmetic mask, sunscreen, lip, eye shadow, eyebrow, eyeliner, eyebrow, etc. Can do.

  Moreover, the sheet-form cosmetic of this embodiment can be shape | molded in complicated shapes, such as a flower, and can implement | achieve the cosmetics excellent in the designability. For example, the cosmetic composition prepared by mixing the above-described components is stretched into a sheet with a roll, and the sheet-like cosmetic is pleated by applying resistance at a predetermined distance from the scraping blade of the roll. Folds finely. A flower-shaped cosmetic as shown in FIG. 1 can be produced by squeezing this at the center and combining both end faces.

  Furthermore, according to the sheet-shaped cosmetic of the present embodiment, since it has good toughness, it is possible to realize a cosmetic mask and a tape-shaped cosmetic on which the cosmetic is locally applied.

  In addition, the sheet-like cosmetic of the present embodiment can be used in various forms, for example, it can be pasted on a predetermined base material to give a sample or a cosmetic combined with an applicator. it can.

  EXAMPLES Hereinafter, although an Example demonstrates this invention further more concretely, this invention is not limited to a following example.

(Examples 1-8, Reference Examples 9-14, Examples 15-19, and Comparative Example 1)
Cosmetic bulks having the compositions (mass%) shown in Tables 1 to 3 were prepared. In addition, preparation was performed by mixing each component at 90-110 degreeC for 3 minutes using the dissolution pot.

The details of each component shown in the table are as follows.
Dimethylsilylated silica: manufactured by Nippon Aerosil Co., Ltd., AEROSIL R974
PVP: manufactured by ASP Japan, PVP K-90
PEG-6: NOF Corporation, PEG # 300
Sorbitan sesquiisostearate: Nisshin Oilio Group, Cosmall 182V
PEG-60 hydrogenated castor oil: Emulex HC-60, manufactured by Nippon Emulsion Co., Ltd.
PEG-40 stearate: manufactured by Nippon Surfactant Co., Ltd., NIKKOL MYS-40V
Microcrystalline wax: Sonneborn, Inc. , MULTIWAX W-445
Triethylhexanoin (vinyl dimethicone / lauryl dimethicone) crosspolymer: manufactured by Shin-Etsu Chemical Co., Ltd., KSG-43
Behenyl alcohol: manufactured by Higher Alcohol, Behenyl alcohol polyethylene: manufactured by Nippon Natural Products, LASHWAX P
Behenic acid: manufactured by NOF Corporation, NAA-222S beads tocopherol: manufactured by Nisshin Oillio Group, Inc. Tocopherol 100
Ethylhexyl palmitate Saracos: Nisshin Oily Group, P-8
Colorant 1: manufactured by JGC Catalysts & Chemicals Co., Ltd., SYMPHOLIGHT
Colorant 2: Miyoshi Kasei Co., Ltd., SA-Timika Extra Large Sparkle Colorant 3: Miyoshi Kasei Co., Ltd., SA-HOMBITAN AFDC200
Colorant 4: PDM-40L manufactured by Topy Industries, Ltd.

[Shape retention of sheet cosmetics]
The cosmetic bulk obtained above was spread using a three-stage roll to produce a sheet of length 10 cm × width 5 cm × thickness 0.12 ± 0.05 mm.

As shown in FIG. 2, the center of the obtained sheet was placed on an aluminum rod having a diameter of 3 mm, and the sheet when left for 1 minute was evaluated according to the following criteria.
A: The sheet remains on the aluminum bar without any change in shape, and no cracks occur even if it is expanded.
○: The sheet remained on the aluminum rod without any change in shape, and when it was spread, cracks were partially observed.
Δ: The shape of the sheet partially collapsed, but remained on the aluminum bar.
×: Cannot be formed into a sheet, or the sheet shape collapses and does not remain on the aluminum bar.

[Toughness of cosmetics]
The cosmetic bulk obtained above was molded into a diameter of 3 mm and a length of 3 cm. A state when the molded product has a place of 4 mm from both ends and is twisted 180 degrees was evaluated according to the following criteria.
○: The molded body remains connected.
(Triangle | delta): The crack was seen in a part of molded object.
X: The molded body was torn off.

[Storage stability of sheet cosmetics]
The cosmetic bulk prepared in Examples 15 to 19 was spread using a three-stage roll to produce a sheet having a thickness of 0.12 ± 0.05 mm. The produced sheet was molded into a flower shape as shown in FIG. 1, and the appearance after storing in a thermostatic bath at each temperature for 1 month was evaluated according to the following criteria. High temperature and high humidity refers to a humidity of 75% and a temperature of 40 ° C.
○: There is almost no change in shape, and even if sweating is seen, it disappears if left at room temperature for about 2 hours.
Δ: The shape is changed, but the sheet remains without being broken. Even if sweating is seen, it disappears if left at room temperature for about 2 hours.
X: The sheet is broken and the shape cannot be maintained.

(Example 20)
The following ingredients were dissolved and mixed at 90 to 110 ° C., and further mixed with a three-stage roll to prepare a cosmetic bulk.
(Component) Blending amount (% by mass)
1. PVP 6
2. PEG-6 6
3. Ethylhexyl palmitate 6
4). Sorbitan sesquiisostearate 0.3
5. PEG-60 hydrogenated castor oil 3
6). PEG-40 3 stearate
7. Triethylhexanoin (vinyl dimethicone / lauryl dimethicone)
Cross polymer 6
8). Behenyl alcohol 3
9. Polyethylene 22
10. Behenic acid 6
11. Tocopherol 0.01
12 Dimethylsilylated silica 0.3
13. Colorant 3 22
14 Colorant 4 16.39

  When the toughness and the shape retention were evaluated in the same manner as above, they were ○ and ○, respectively.

[Evaluation of powdering]
The appearance of the cosmetic bulk after storage for 1 month at temperatures of 5 ° C. and 25 ° C. was confirmed, and powdering was evaluated according to the following criteria based on the presence or absence of white powdery crystals.
○: No crystals were confirmed.
Δ: Partially white.
X: It looks white as a whole.

In the case of a cosmetic bulk prepared in the same manner as in Example 20 except that stearic acid was used in place of behenic acid, the evaluation of powdering was ○.

Claims (6)

A sheet-shaped cosmetic formed by molding a cosmetic having a moisture content of 1% by mass or less into a sheet,
An oil, a water-soluble polymer, a hydroxyl group-containing compound having two or more hydroxyl groups in the molecule, and a powder,
The content of the powder is 5 to 75% by mass based on the total amount of the cosmetic,
The total content of the water-soluble polymer and the hydroxyl group-containing compound is 3 to 50% by mass with respect to the total content of the oil, the water-soluble polymer and the hydroxyl group-containing compound,
Foundation, teak, Face Color, lip, eye shadow, used A Iraina, or as eyebrow, a sheet-like cosmetic.   Content of the said oil content is a sheet-like cosmetics of Claim 1 which is 25-70 mass% on the basis of cosmetics whole quantity.   The sheet-form cosmetic according to claim 1 or 2, wherein the content of the water-soluble polymer is 0.5 to 40% by mass based on the total amount of the cosmetic.   The sheet-form cosmetic according to any one of claims 1 to 3, wherein the content of the hydroxyl group-containing compound is 0.4 to 35% by mass based on the total amount of the cosmetic.   The sheet according to any one of claims 1 to 3, wherein a mass ratio of the hydroxyl group-containing compound to the water-soluble polymer [hydroxyl group-containing compound] / [water-soluble polymer] is 4/5 to 2/1. Cosmetics.   The sheet-form cosmetic according to any one of claims 1 to 5, comprising polyethylene as the oil, and 18 mass% or more based on the total amount of the cosmetic.