JP2015137246A - solid powder cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problems in which: if elastic powder is included in a solid power cosmetic, use feeling such as extendibility and smoothness when coated is improved to increase the merchandise attraction; and at the same time if the elastic powder is included in the press molded solid powder cosmetic, impact resistance is notably declined.SOLUTION: A solid powder cosmetic is provided excellent in use feeling and impact resistance by containing the following components (A) and (B): (A) one, two or more kinds of elastic powder selected from polyurethane powder, and polyalkyl acrylate powder; and (B) ascorbic acid-2-phosphate represented by the chemical formula 1.

Description

  The present invention relates to a solid powder cosmetic which is excellent in usability such as elongation and smoothness during application and has good impact resistance.

  In general, a solid powder cosmetic is composed of a powder that is a main component and an oil component that acts as a binder or an adhesive, and is manufactured by press molding. Since the powder part is the main base material for cosmetics, it greatly affects the feeling of use.

  Conventionally, elastic powders such as polyurethane powders and polyalkyl acrylate powders are important powders that, due to their unique elasticity, spread smoothly when applied to the skin and give a very comfortable feeling to use. Are known.

  However, when the elastic powder is blended with the solid powder cosmetic, there is a drawback that the impact resistance of the press-molded product is remarkably lowered. Therefore, in order to improve these drawbacks, it is necessary to add a large amount of oil or limit the amount of elastic powder. However, the oil agent has molding strength due to its viscosity and liquid cross-linking, so that the feeling of use is lowered, and if the blending amount of the elastic powder is limited, it becomes difficult to fully express the feeling of use originally possessed. . In addition, in order to increase the impact resistance of solid powder cosmetics, methods using solid oil powder as a blending component are known (Patent Documents 1 and 2), but the impact resistance is improved by blending solid oil powder. In order to obtain sufficient impact resistance, it is necessary to increase the blending amount of solid oil powder or decrease the blending amount of elastic powder. There is a problem that remarkably deteriorates the feeling of use. Therefore, the development of a molding aid that can improve the impact resistance of a press-molded product without impairing the feeling of use is an issue.

  On the other hand, it is known that ascorbic acid-2-phosphate is a component having a high whitening effect.

Japanese Patent Laid-Open No. 4-18011 JP 2005-272427 A

  This invention is made | formed in view of the said situation, and it aims at providing the excellent usability | use_conditions, such as the elongation at the time of application | coating, smoothness, etc., and providing favorable impact resistance.

  In such a situation, the inventors of the present invention have made extensive studies to solve the above problems, and as a result, by adding ascorbic acid-2-phosphate, the impact resistance is reduced even if it contains elastic powder. The inventors have found that this is not the case and have completed the present invention.

That is, this invention is solid powder cosmetics characterized by mix | blending the following component (A) and (B).
(A) Ascorbic acid-2-phosphate represented by one or two or more elastic powders selected from polyurethane powder and alkyl polyacrylate powder (B)

  The present invention is a solid powder having excellent impact resistance and excellent impact resistance, such as elongation and smoothness during application, by combining elastic powder and ascorbic acid-2-phosphate in combination. It provides cosmetics.

The component (A) used in the present invention is preferably a powder having a compressive strength of 1.0 MPa or less, more preferably 0.8 MPa or less. Here, the compressive strength refers to the force required to deform the diameter of the powder particles by 10% with a microhardness meter, and the following formula, compressive strength (MPa) = 27.5 × P / πd ² (P = Load required to deform 10% of particles (N), d = value of particle diameter (mm)). Any of those usually used in cosmetics can be used. Commercially available products of such powders include plastic powder D-400 (polyurethane powder: manufactured by Toshi Pigment), techpolymer ACX-806C, techpolymer ACX-1502C (polyalkyl acrylate powder: Sekisui Plastics Co., Ltd.) And Matsumoto Microsphere S100, S102 (both are alkyl polyacrylate powders: Matsumoto Yushi Seiyaku Co., Ltd.). These may be used individually by 1 type, and 2 or more types may be mixed and used for them.
Further, the elastic powder of the present invention is not particularly limited, but the average particle diameter is preferably 2 to 35 μm, and if it is within this range, excellent effects can be obtained particularly in elongation and smoothness during application. In the present invention, the average particle diameter is a median diameter value measured by dispersing a powder in ethanol using a laser diffraction particle diameter measuring device (LA-920: manufactured by Horiba Seisakusho).

  Although content of the component (A) used by this invention is not specifically limited, Preferably it is 0.1-20 mass%. More preferably, it may be used so as to contain 1 to 10% by mass.

  The component (B) used in the present invention is a compound represented by the above chemical formula 1, and X is an alkali metal and / or an alkaline earth metal. Examples of the alkali metal include lithium, sodium, and potassium. Examples of the alkaline earth metal include magnesium and calcium. The number of moles of alkali metal substituted for the ascorbic acid-2-phosphate is preferably 1 mole or more, and most preferably 2 moles or more from the standpoint of stability itself.

  Examples of the ascorbic acid-2-phosphate include sodium ascorbyl-2-phosphate, and sodium, potassium, magnesium, and calcium of this substance.

  These compounds may be used individually by 1 type, and 2 or more types may be mixed and used for them. In the cosmetic of the present invention, the content of ascorbic acid-2-phosphate is 0.01 to 10% by mass in the cosmetic. Preferably it is 0.1 mass%-3 mass%. If it is 0.01% by mass or less, the impact resistance reduction suppressing effect may not be achieved, and if it is 10% by mass or more, it is not economical.

  The powder used in the present invention is not particularly limited as long as it is a powder usually used in cosmetics in addition to the components (A) and (B). For example, talc, sericite, mica, synthetic mica, silica, barium sulfate, alumina, boron nitride, titanium oxide, iron oxide, zinc oxide and other inorganic powders, polymethylsilsesquioxane, polyethylene, polystyrene, wool powder, Examples thereof include organic powders such as silk powder and crystalline cellulose powder, and one or more of these can be used. In addition, these powders may be used after being subjected to a surface treatment with a generally known treatment agent such as a fluorine compound, a silicone compound, or a surfactant. Although the compounding quantity of said powder is not specifically limited, 50-90 mass% is preferable with respect to solid powder cosmetics.

  Oils used in the present invention include liquid paraffin, squalane, petrolatum, microcrystalline wax, ceresin, cetyl alcohol, isostearyl alcohol, oleyl alcohol, 2-hexyldecanol, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, diethyl 2-ethylhexanoic acid neopentyl glycol, dicaprylic acid neopentyl glycol, dicapric acid neopentyl glycol, tri-2-ethylhexanoic acid glycerin, triisostearic acid glycerin, olive oil, macadamia nut oil, sunflower oil, lanolin, lauric acid, myristic acid, palmitic acid Acid, stearic acid, beeswax, candelilla wax, carnauba wax, linear or cyclic dimethylpolysiloxane, methylphenylpolysiloxa Like oil etc. is. Although content of these oil agents is not specifically limited, It is preferable to contain 1-20 mass%, and also 2-15 mass%.

  The present invention shows sufficient drop strength with the constitution of components (A) and (B), but petrolatum, macadamia nut fatty acid phytosteryl, hexa (hydroxystearic acid / stearic acid / rosinic acid) dipentaerythrityl, dimerlinoleic acid (phytosteryl / Isostearyl / cetyl / stearyl / behenyl), dimerlinoleic acid dimerlinoleyl bis (behenyl / isostearyl / phytosteryl), macadamia nut oil polyglyceryl-6esters behenate, (isostearic acid / behenic acid) (glyceryl / polyglyceryl- 6) It is more effective when a paste-like oily component such as Esters is used at 25 ° C.

  The solid powder cosmetic in the present invention refers to a powder cosmetic and press-molded cosmetic. Specific examples include powder foundation, pressed powder, eye color, face color, and the like.

  In the solid powder cosmetic of the present invention, various components other than the above components, for example, an ultraviolet absorber, a moisturizing agent, a surfactant, an antioxidant, a cosmetic component, as necessary, as long as the effects of the present invention are not impaired. In addition, preservatives, film forming agents, anti-fading agents, fragrances and the like can be appropriately blended in order to impart various effects.

  The present invention will be described in more detail with reference to the following examples. In addition, these do not limit this invention at all.

(Examples 1 and 2 and Comparative Examples 1 and 2) Powder Foundation (Examples 3 to 6) Pressed Powder Solid powder cosmetics were produced according to the formulations shown in Tables 1 and 2 and the method shown below. About each obtained sample, taking to an application tool by sensory evaluation, the feeling of use, such as the extension at the time of application | coating, smoothness, etc., and the impact resistance were evaluated by the drop strength test. These results are also shown in Tables 1 and 2.

* 1: Plastic powder D-400 (average particle size 13 μm, compressive strength 0.25 MPa: manufactured by East Pigment)
* 2: Microsphere S-102 (average particle size 15 μm, compressive strength 0.6 MPa: manufactured by Matsumoto Yushi Seiyaku Co., Ltd.)
* 3: Microsphere S-100 (average particle size 15 μm, compressive strength 0.4 MPa: manufactured by Matsumoto Yushi Seiyaku Co., Ltd.)

(Production method)
Ingredients 1 to 15 were uniformly mixed with a Henschel mixer, and pulverized with an atomizer. Further, the mixed pulverized product of components 1 to 15 and the components 16 to 21 previously heated and mixed are added to a Henschel mixer and mixed uniformly. After pulverizing the atomizer, the mixture is passed through a sieve, pressed into a resin dish, and powdered. I got a foundation.

(Production method)
Ingredients 1-14 were mixed uniformly with a Henschel mixer and pulverized with an atomizer. Furthermore, the mixed pulverized product of components 1 to 14 and components 15 to 19 previously heated and mixed are added to a Henschel mixer and mixed uniformly. After atomizer pulverization, the mixture is passed through a sieve, pressed into a resin dish, and pressed. I got a powder.

(Evaluation 1) Sensory evaluation (a) Take the application tool, (b) Use feeling (elongation, smoothness, etc.) by 10 professional panelists, each panel has 7 grades by the following absolute evaluation The average value was calculated from the total score of all the panels for each sample, and judged according to the following four-step criteria.

(Evaluation method)
The sensory test panel of 10 people used the above-mentioned solid powder cosmetics, and the following evaluation items were evaluated in 7 levels by each panel member based on the absolute evaluation. Judgment was made based on the stage judgment criteria.
(Evaluation item)
(I) Take to application tool (b) Usability (elongation, smoothness, etc.)
(Evaluation criteria)
(Score): (Evaluation)
6: Very good 5: Good 4: Somewhat good 3: Normal 2: Somewhat bad 1: Bad 0: Very bad (determination criteria)
(Average score) (Judgment)
5 points or more: Excellent: ◎
3 points or more and less than 5 points: Excellent: ○
1 point or more and less than 3 points: Inferior: △
Less than 1 point: Very inferior: ×

(Evaluation 2) Drop strength Each of the five solid powder cosmetics was prepared, and dropped in an upright direction on an acrylic plate from a height of 1 m while being filled in a resin dish. Observed, each sample was scored according to the following evaluation criteria, an average score of n = 5 scores was calculated, and judged according to the following four criteria.
(Evaluation item)
(C) Impact resistance (evaluation criteria)
(Score): (Evaluation)
4: No change 3: Slightly cracked, but no problem in usability 2: Cracked, floated 1: Large cracked or lifted (Criteria)
(Score average value of n = 5) (Judgment)
3.5 points or more: Very good: ◎
3 points or more and less than 3.5 points: Good: ○
2 points or more and less than 3 points: Defect: △
Less than 2 points: Very bad: ×

Example 7: Powder foundation Ingredient name Compounding quantity (mass%)
1. Silicone-treated synthetic mica Silicone-treated sericite 10.00
3. Silicone-treated talc 15.00
4). Silicone-treated pigment grade titanium oxide 10.00
5. Silicone-treated fine particle titanium oxide 8.00
6). Silicone-treated fine particle zinc oxide 4.00
7). Silicone treatment Bengala 0.40
8). Silicone-treated yellow iron oxide 3.30
9. Silicone-treated black iron oxide 0.19
10. Silicone-treated silicic acid 3.00
11. Polyurethane powder (* 1) 3.00
12 Polyalkyl acrylate powder a (* 2) 6.00
13. Polyalkyl acrylate powder b (* 3) 6.00
14 Ascorbic acid-2-magnesium phosphate 7.00
15. Methylparaben 0.20
16. Dimethicone 2.00
17. Hydrogenated polyisobutene 1.00
18. Neopentyl glycol diisononanoate 5.00
19. Ethylhexyl methoxycinnamate 4.00
20. Tocopherol 0.05
21. Fragrance 0.05
Total 100.00

(Production method)
Ingredients 1 to 15 were uniformly mixed with a Henschel mixer, and pulverized with an atomizer. Further, the mixed pulverized product of components 1 to 15 and the components 16 to 21 previously heated and mixed are added to a Henschel mixer and mixed uniformly. After pulverizing the atomizer, the mixture is passed through a sieve, pressed into a resin dish, and powdered. I got a foundation.

Example 8: Pressed powder Ingredient name Compounding quantity (mass%)
1. The remaining amount of talc Silicone-treated synthetic sericite 5.00
3. Silicone-treated synthetic mica 20.00
4). Silicone-treated fine particle titanium oxide 3.00
5. Silicone-treated fine particle zinc oxide 2.00
6). Silicone treated bengara 0.12
7). Silicone-treated yellow iron oxide 0.24
8). Silicone-treated black iron oxide 0.03
9. Silicic anhydride 1.00
10. Polyurethane powder (* 1) 1.00
11. Polyalkyl acrylate powder a (* 2) 1.00
12 Polyalkyl acrylate powder b (* 3) 1.00
13. Ascorbic acid-2-magnesium phosphate 1.50
14 Methylparaben 0.20
15. Dimethicone 1.50
16. Vaseline 0.30
17. Diethylhexyl succinate 1.50
18. Ethylhexyl methoxycinnamate 2.00
19. Tocopherol 0.05
20. Fragrance 0.05
Total 100.00

(Production method)
Ingredients 1-14 were mixed uniformly with a Henschel mixer and pulverized with an atomizer. Further, the mixed pulverized product of components 1 to 14 and components 15 to 20 previously heated and mixed are added to a Henschel mixer and mixed uniformly. After pulverizing the atomizer, the mixture is passed through a sieve, pressed into a resin dish, and pressed. I got a powder.

Example 9: Eye color
Ingredient name Compounding amount (mass%)
1. Residual amount of silicone-treated talc Silicone-treated sericite 22.00
3. Silicone-treated synthetic mica 10.00
4). Silicone-treated pigment grade titanium oxide 2.00
5. Silicone-treated Bengala 0.03
6). Silicone-treated yellow iron oxide 0.02
7). Silicic anhydride 4.00
8). Polyurethane powder (* 1) 0.10
9. Polyalkyl acrylate powder a (* 2) 0.20
10. Polyalkyl acrylate powder b (* 3) 0.20
11. Ascorbic acid-2-magnesium phosphate 0.50
12 Red 226 0.65
13. Gunjo 0.15
14 Mica titanium 5.00
15. Methylparaben 0.20
16. Candelilla Row 1.00
17. Phenyl-modified silicone 7.00
18. Neopentyl glycol dicaprate 5.00
19. Fragrance 0.20
Total 100.00

(Production method)
Ingredients 1 to 15 were uniformly mixed with a Henschel mixer, and pulverized with an atomizer. Further, the mixed pulverized product of components 1 to 15 and components 16 to 19 previously heated and mixed are added to a Henschel mixer and mixed uniformly. After pulverizing the atomizer, the mixture is passed through a sieve, pressed into a resin dish, Color was obtained.

Example 10: Face color Ingredient name Compounding amount (mass%)
1. Residual amount of silicone-treated talc Silicone-treated sericite 23.00
3. Silicone-treated pigment grade titanium oxide 2.00
4). Silicone-treated Bengala 0.03
5. Silicone-treated yellow iron oxide 0.02
5. Silica anhydride 2.00
6). Polyurethane powder (* 1) 0.50
7). Polyalkyl acrylate powder a (* 2) 2.00
8). Polyalkyl acrylate powder b (* 3) 2.00
9. Ascorbic acid-2-magnesium phosphate 5.00
10. Red No. 202 0.70
11. Gunjo 0.30
12 Mica titanium 4.00
13. Iron oxide coated mica titanium 1.00
14 Methylparaben 0.20
15. Beeswax 1.50
16. Macadamia nut fatty acid phytosteryl 0.30
17. Phenyl-modified silicone 6.00
18. Squalane 4.00
19. Fragrance 0.20
Total 100.00

(Production method)
Ingredients 1-14 were mixed uniformly with a Henschel mixer and pulverized with an atomizer. Furthermore, the mixed pulverized product of components 1 to 14 and components 15 to 19 previously heated and mixed are added to a Henschel mixer and mixed uniformly. After pulverizing the atomizer, the mixture is passed through a sieve, pressed into a resin dish, and faced. Color was obtained.

  Examples 7 to 10 were also solid powder cosmetics having excellent usability and good impact resistance.

  In Example 1, Example 2, Example 8, and Example 10 containing a paste-like oily component at 25 ° C., the enhancement of the effect was particularly recognized.

  By containing ascorbic acid-2-phosphate, the solid powder cosmetic of the present invention can suppress a decrease in impact resistance even if it contains an elastic powder.

Claims (9)

A solid powder cosmetic comprising the following components (A) and (B):
(A) Ascorbic acid-2-phosphate represented by one or two or more elastic powders selected from polyurethane powder and alkyl polyacrylate powder (B)
The solid powder cosmetic according to claim 1, wherein the average particle size of the component (A) is 2 to 35 µm. The solid powder cosmetic according to claim 1 or 2, wherein the compressive strength of the component (A) is 1.0 MPa or less. The content of the component (A) is 0.1 to 20% by mass and the content of the component (B) is 0.01 to 10% by mass, according to any one of claims 1 to 3. Solid powder cosmetic. The solid powder according to any one of claims 1 to 4, wherein the content of the component (A) is 1 to 10% by mass, and the content of the component (B) is 0.1 to 3% by mass. Cosmetics. The solid powder cosmetic according to any one of claims 1 to 5, wherein the polyurethane powder of component (A) is HDI / trimethylol hexyl lactone crosspolymer. The polyalkyl acrylate powder of component (A) is selected from (butyl acrylate / dimethacrylate glycol) crosspolymer, (methyl methacrylate / dimethacrylate glycol) crosspolymer, and (acrylates / ethylhexyl acrylate) crosspolymer. It is 1 type, or 2 or more types of elastic powder, The solid powder cosmetics as described in any one of Claims 1-6 characterized by the above-mentioned. The solid powder cosmetic according to any one of claims 1 to 7, wherein the component (B) is ascorbic acid-2-magnesium phosphate. The solid powder cosmetic according to any one of claims 1 to 8, comprising a paste-like oily component at 25 ° C.