Oily stick cosmetic composition

Abstract

To provide an oily stick cosmetic composition that achieves thermal stability and drop strength even with a reduced diameter.SOLUTION: An oily stick cosmetic composition contains: (A) a first wax having a melting point of 70-120°C; (B) a second wax that is paste-like at 20°C; (C) a third wax that is beeswax or microcrystalline wax; (D) diisostearyl malate; and (E) a powder, wherein the third wax (C) has a melting point of 55-85°C and the content of the powder (E) is 40-70 mass% based on the total amount of the composition.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to an oily stick-type cosmetic composition. [Background technology]

[0002] Makeup cosmetics are cosmetics used to enhance the color and texture of skin. Typical makeup cosmetics include foundation, mascara, eyebrow pencil, eyeliner, etc. Mascara, eyeliner, eye color, eye shadow, and eyebrow pencil have traditionally been known as cosmetics for the eyebrows or eyes. Patent Document 1 discloses eyeliners and eyebrow pencils that have high color saturation and development upon application, provide a smooth feel when used, have excellent impact resistance, and do not cause caking during use. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-124839 Summary of the Invention [Problem to be solved by the invention]

[0004] Cosmetics for eyebrows or eyes are applied to a narrow area. Therefore, if the diameter of a stick-shaped cosmetic is large, the cosmetic is applied to a wide area at once, making it difficult to apply fine, delicate makeup. On the other hand, stick-shaped cosmetic compositions with a small diameter tend to have reduced thermal stability and drop strength. Therefore, there has been a demand for an oily stick-shaped cosmetic composition that has thermal stability and drop strength even when the diameter is small. Therefore, an object of the present invention is to provide an oily stick-shaped cosmetic composition that has heat stability and drop strength even when its diameter is reduced. [Means for solving the problem]

[0005] The present inventors have conducted extensive research into oily stick-type cosmetic compositions that have thermal stability and drop strength even when the diameter is reduced, and have surprisingly found that by employing the following composition, an oily stick-type cosmetic composition that has thermal stability and drop strength even when the diameter is reduced can be obtained. The present invention is based on this finding. Thus, the present invention relates to the following: [1] (A) a first wax having a melting point of 70 to 120°C; (B) a second wax that is paste-like at 20°C; (C) a third wax which is beeswax or microcrystalline wax; (D) diisostearyl malate, and (E) Powder An oily stick cosmetic composition comprising: (C) The melting point of the third wax is 55 to 85°C; (E) An oily stick-type cosmetic composition having a powder content of 40 to 70% by mass based on the total mass of the composition. [2] The oily stick-type cosmetic composition according to [1], wherein (B) the second wax that is pasty at 20°C is one or more waxes selected from the group consisting of phytosteryl / isostearyl / cetyl / stearyl / behenyl dimer dilinoleate, dimer dilinoleyl bis(behenyl / isostearyl / phytosteryl) dimer dilinoleate, di(octyldodecyl / phytosteryl / behenyl) lauroyl glutamate, caprylic / capric / myristic / stearic triglyceride, petrolatum, hydrogenated castor oil isostearate, and hydrogenated castor oil dimer dilinoleate. [3] The oily stick-type cosmetic composition according to [1] or [2], wherein the third wax (C) is beeswax having a melting point of 55 to 85°C. [4] (A) The content of the first wax is 0.3 to 15% by mass based on the total amount of the composition, (B) The content of the second wax is 1 to 20 mass% based on the total amount of the composition, (C) The content of the third wax is 1 to 20 mass% based on the total amount of the composition, (D) The content of diisostearyl malate is 0.01 to 5% by mass based on the total amount of the composition. The oily stick-shaped cosmetic composition according to any one of [1] to [3]. [5] The oily stick-type cosmetic composition according to any one of [1] to [4], wherein the water content is 0.1 mass % or less based on the total amount of the composition. [6] The oily stick-shaped cosmetic composition according to any one of [1] to [5], which is a makeup cosmetic for eyebrows or eyes. [7] The oily stick-shaped cosmetic composition according to [6], which is for eyebrows. [Effects of the Invention]

[0006] According to the present invention, it is possible to provide an oily stick-shaped cosmetic composition that has thermal stability and drop strength even when the diameter is reduced. DETAILED DESCRIPTION OF THE INVENTION

[0007] The present invention will be described in detail below. In this specification, unless otherwise specified, the expression "a to b" for numerical values ​​a and b is equivalent to "a or more and b or less." In other words, the expression "a to b" includes the numerical values ​​a and b at both ends. In such an expression, when a unit is added only to the numerical value b, the unit is also applied to the numerical value a.

[0008] Component A: First Wax The composition of the present invention contains, as the first wax, a first wax having a melting point of 70 to 120° C. The first wax is added to improve drop strength and thermal stability. The first wax is not limited as long as it has a melting point of 70 to 120° C., and one or more types selected from hydrocarbon waxes such as polyethylene wax, ceresin, paraffin wax, microcrystalline wax, hydrogenated microcrystalline wax, synthetic wax, and petrolatum, as well as waxes such as beeswax, carnauba wax, candelilla wax, and Japan wax, etc. Hydrocarbon wax is preferred as the first wax, and it is more preferred to use one or more types selected from microcrystalline wax and synthetic wax. The melting point of the first wax is 70 to 120°C. The first wax is preferably solid at 20°C. If the melting point of the first wax is indicated in a catalog or the like provided by the raw material manufacturer, the value in that catalog is used. If there is a range of catalog values, the center value is used as the melting point. The same applies to the melting points of the second wax and the third wax. The melting point of the first wax can be 75 to 110°C, 78 to 105°C, 80 to 100°C, or 81 to 95°C.

[0009] The content of component A in the total amount of the composition is not particularly limited as long as the effects of the present invention are obtained, but is preferably 0.3 to 15 mass%, more preferably 0.5 to 12 mass%, even more preferably 1 to 10 mass%, even more preferably 2 to 8 mass%, and most preferably 3 to 7 mass%. The composition of the present invention may contain, in addition to the wax having a melting point of 70 to 120°C, a wax having a melting point other than 70 to 120°C, as long as the effects of the present invention can be obtained.

[0010] Component B: Second Wax The composition of the present invention contains, as the second wax, a second wax that is in a paste state at 20° C. The second wax is added to improve drop strength. The second wax is not limited as long as it is in a paste form at 20°C, and one or more waxes selected from the group consisting of phytosteryl / isostearyl / cetyl / stearyl / behenyl dimer dilinoleate, dimer dilinoleyl bis(behenyl / isostearyl / phytosteryl) dimer dilinoleate, di(octyldodecyl / phytosteryl / behenyl) lauroyl glutamate, caprylic / capric / myristic / stearic triglyceride, petrolatum, hydrogenated castor oil isostearate, and hydrogenated castor oil dimer dilinoleate can be used. It is preferable to use one or more selected from hydrogenated castor oil dimer dilinoleate, phytosteryl / isostearyl / cetyl / stearyl / behenyl dimer dilinoleate, and caprylic / capric / myristic / stearic triglyceride, and it is more preferable to use caprylic / capric / myristic / stearic triglyceride. The second wax is in a paste state at 20°C. "Paste state" refers to a semi-solid state that has a melting point above 20°C and does not completely solidify at 20°C. "Semi-solid state" refers to a state in which the wax can easily change shape in response to external pressure; for example, when placed in a tube, it can be easily squeezed out by squeezing the tube, or when scooped with a shovel, it can be scooped up with almost no resistance. The second wax preferably has a viscosity of 10 to 2000 mPa·s at 50°C. In the present invention, the viscosity of the second wax is measured by the following method. ·Equipment used: Brookfield B type viscometer Measurement conditions: Measured at 12 rpm / 10 min at a temperature of 50°C Rotor: SC4-27 is used. The upper limit of the viscosity of the second wax at 50°C can be, for example, 1800 mPa·s, 1500 mPa·s, 1200 mPa·s, 1000 mPa·s, 800 mPa·s, or 500 mPa·s, and the lower limit of the viscosity of the second wax can be, for example, 15 mPa·s, 20 mPa·s, 30 mPa·s, 50 mPa·s, or 100 mPa·s. The upper and lower limits can be combined as appropriate.

[0011] The content of component B in the total amount of the composition is not particularly limited as long as the effects of the present invention are obtained, but is preferably 1 to 20 mass%, more preferably 2 to 18 mass%, even more preferably 3 to 16 mass%, even more preferably 4 to 15 mass%, even more preferably 5 to 12 mass%, and most preferably 6 to 10 mass%. The composition of the present invention may contain, in addition to a wax that is pasty at 20°C, a wax that is not pasty at 20°C, as long as the effects of the present invention are obtained. In this specification, "comprising" a second wax that is paste-like at 20°C means that at least one type of wax that is paste-like at 20°C is included, and does not mean that multiple components become paste-like by mixing the components together.

[0012] Component C: Third Wax The composition of the present invention contains, as a third wax, beeswax or microcrystalline wax having a melting point of 55 to 85° C. Component C is added to improve both thermal stability and drop strength, and in particular, component C imparts flexibility to the composition of the present invention and improves drop strength.

[0013] The content of component C based on the total amount of the composition is not particularly limited as long as the effects of the present invention are obtained, but is preferably 1 to 20 mass%, more preferably 2 to 18 mass%, even more preferably 3 to 16 mass%, even more preferably 4 to 15 mass%, even more preferably 5 to 12 mass%, and most preferably 5 to 10 mass%. The mass ratio of the content of component B to the content of component C (content of component B / content of component C) can be 0.30 to 3.0, 0.50 to 2.0, 0.60 to 1.8, or 0.70 to 1.5. By setting the mass ratio of the content of component B to the content of component C within the above range, the drop strength can be further improved.

[0014] The composition of the present invention may contain beeswax or microcrystalline wax having a melting point other than 55 to 85° C. in addition to beeswax or microcrystalline wax having a melting point of 55 to 85° C., as long as the effects of the present invention can be obtained. The composition of the present invention preferably contains beeswax. When a composition contains one component that corresponds to both component A and component C, the composition is considered to contain both component A and component C. Specifically, when a composition contains, for example, a microcrystalline wax with a melting point of 72°C as component A, the composition is considered to contain component A and component C even without the addition of component C. Preferably, components A and C are different materials. For example, if component A is a microcrystalline wax, component C is preferably beeswax. When component C is beeswax, the melting point of the beeswax can be 55 to 80°C, 55 to 75°C, 55 to 70°C, or 60 to 70°C. When component C is a microcrystalline wax, the melting point of the microcrystalline wax can be 60 to 85°C, 60 to 80°C, or 65 to 75°C.

[0015] Ingredient D: Diisostearyl malate The composition of the present invention contains diisostearyl malate as component D. Diisostearyl malate is a diester of malic acid and isostearyl alcohol. Component D is added to improve both application ease and drop strength.

[0016] The content of component D in the total amount of the composition is not particularly limited as long as the effects of the present invention are obtained, but is preferably 0.01 to 5 mass%, more preferably 0.02 to 4 mass%, even more preferably 0.05 to 3 mass%, even more preferably 0.1 to 2 mass%, and most preferably 0.2 to 1 mass%. The mass ratio of the content of component B to the content of component D (content of component B / content of component D) can be 5-50, 8-40, 10-30, or 12-25. The mass ratio of the content of component C to the content of component D (content of component C / content of component D) can be 5-50, 8-40, 10-30, or 12-25.

[0017] Component E: Powder The powder of Component E is not limited as long as it is used in the technical field as a color pigment or extender pigment and does not impair the effects of the present invention. Examples of such powders include inorganic powders (e.g., mica, talc, kaolin, sericite, phlogopite, iron oxide, black iron oxide, yellow iron oxide, red iron oxide, titanium oxide, zinc oxide, iron titanate, aluminum hydroxide, aluminum oxide, hectorite, bentonite, smectite, montmorillonite, vermiculite, magnesium carbonate, calcium carbonate, silica, diatomaceous earth, magnesium silicate, calcium silicate, aluminum silicate, barium silicate, strontium silicate, sodium silicate, barium sulfate, metal tungstate, silicic anhydride, hydroxyapatite, zeolite, boron nitride, manganese violet, cobalt violet, oxide, chromium, chromium hydroxide, cobalt titanate, ultramarine, ferric iron, aluminum powder, copper powder, synthetic fluorophlogopite, etc.), or organic powders (for example, polyamide resin powder (nylon powder), polyethylene powder, polymethyl methacrylate powder, polystyrene powder, styrene-acrylic acid copolymer resin powder, benzoguanamine resin powder, cellulose powder, organic pigments (for example, Red 2, Blue 1, Blue 2, Red 3, Red 102, Red 104, Red 202, Red 226, Yellow 3, Yellow 4, Yellow 5, Orange 201, Green 201, chlorophyll, β-carotene, carmine, gardenia yellow, etc.), zirconium, barium, aluminum lake, and other organic pigments). The color pigment or the extender pigment may or may not be surface-treated as long as the effects of the present invention can be obtained. However, it is preferable that the color pigment is surface-treated, and it is preferable that the extender pigment is not surface-treated.

[0018] The content of component E in the total amount of the composition is not particularly limited as long as the effects of the present invention are obtained, but is preferably 40 to 70 mass %, more preferably 45 to 65 mass %, and even more preferably 50 to 60 mass %.

[0019] 《Optional ingredients》 The composition of the present invention may further contain ingredients that are typically incorporated into cosmetics, such as fragrances. The composition of the present invention may contain water, but from the viewpoint of ensuring both thermal stability and drop strength, the content of water is preferably 1.0% or less, more preferably 0.5% or less, even more preferably 0.3% or less, even more preferably 0.2% or less, even more preferably 0.1% or less, and most preferably 0.01% or less, based on the total amount of the composition.

[0020] <Oily stick-shaped cosmetic composition> The oily stick-type cosmetic composition of the present invention is preferably a makeup cosmetic such as eyeliner, eyeshadow, eye color, face color, cheek color, eyebrow, foundation, lipstick, concealer, etc. The oily stick-type cosmetic composition of the present invention is more preferably a makeup cosmetic for eyebrows or eyes such as mascara, eyeliner, eye color, eyeshadow, and eyebrow, and even more preferably eyebrow. The oily stick-type cosmetic composition of the present invention is in the form of a stick. The cross-sectional shape perpendicular to the longitudinal direction (long axis direction) of the oily stick-type cosmetic composition of the present invention may be any of a circle, ellipse, triangle, rectangle, or polygon (with five or more sides), preferably a circle or ellipse. The oily stick-type cosmetic composition of the present invention may have a maximum diameter of 0.4 to 10 mm, 0.5 to 8 mm, 0.6 to 5 mm, 0.7 to 3 mm, or 0.8 to 2 mm. The oily stick-type cosmetic composition of the present invention can be used in pencil-type cosmetics in which the stick-shaped cosmetic is dispensed by, for example, rotating a part of the housing. The oily stick-type cosmetic composition of the present invention is preferably an eyebrow pencil, eyeshadow pencil, pencil eyeliner, lip liner pencil, concealer pencil, or foundation stick, more preferably an eyebrow pencil, eyeshadow pencil, or pencil eyeliner, and even more preferably an eyebrow pencil. [Example]

[0021] The present invention will be described in more detail below with reference to examples, but these examples are not intended to limit the scope of the present invention. Unless otherwise specified, % indicates % by mass.

[0022] In this example, a rod-shaped eyebrow was prepared using the component compositions shown in Tables 1 and 2. The maximum diameter of the eyebrow was 0.8 mm, and the cross section perpendicular to the longitudinal direction (long axis direction) of the eyebrow was a perfect circle.

[0023] The raw materials used are as follows: ·Raw materials used (Component A) Microcrystalline wax (melting point 88-96°C) Synthetic wax (melting point 75-90°C) (Component B) Hydrogenated castor oil dimer dilinoleate (paste at 20°C, melting point 50°C, viscosity at 50°C 1800 mPa·s) Caprylic / capric / myristic / stearic triglyceride (paste at 20°C, melting point 35-45°C, viscosity 20 mPa·s at 50°C) Dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl) (paste at 20°C, viscosity 300 mPa·s at 50°C) (Component C) Beeswax 1 (melting point 60-67°C) Beeswax 2 (melting point 60-67°C) Microcrystalline wax (melting point 60-85°C) *Beeswax 1 and Beeswax 2 are beeswax sourced from different manufacturers. (Component D) Diisostearyl malate

[0024] The melting points of the raw materials used above are all catalog values. Viscosity was measured by the following method. ·Equipment used: Brookfield B type viscometer Measurement conditions: Measured at 12 rpm / 10 min at a temperature of 50°C Rotor: SC4-27 is used.

[0025] The methods for evaluating the thermal stability and drop strength are as follows. ·Quality (thermal stability) The prepared eyebrow pencil was placed in a case, and the case was then placed in a thermostatic bath at 50°C and left there for 4 hours. After that, the condition of the eyebrow pencil was visually checked. Those without any problems were marked with an O, and those with abnormalities such as bending were marked with an X. Quality (drop strength) The prepared eyebrow pencil was placed in a case and left at 25°C or 5°C for at least 4 hours. After leaving it, the eyebrow pencil in the case was dropped horizontally from a height of 70cm onto a concrete block with P tiles attached 10 times to check its strength. Those that had no problems under any of the conditions were marked with an O, and those that showed abnormalities such as breakage under at least one of the conditions were marked with an X.

[0026] The results are shown in Tables 1 and 2 below.

[0027] [Table 1]

[0028] [Table 2]

[0029] It was confirmed that Examples 1 to 6, which contained Components A to E in the specified amounts, had no problems with either thermal stability or drop strength. Comparative Example 1, which contained a low-melting synthetic wax (melting point 55 to 62°C) instead of component A, showed a decrease in drop strength. Comparative Example 2, which contained powdered wax instead of component B, showed a decrease in drop strength. Comparative Example 3, which contained paraffin instead of component C, showed a decrease in both heat stability and drop strength. Comparative Examples 4 to 6, which contained polyglyceryl-2 triisostearate, squalane, or caprylic / capric triglyceride instead of component D, showed a decrease in either heat stability or drop strength. Therefore, it was found that by blending components A to E, an oily stick-shaped cosmetic composition that has heat stability and drop strength can be prepared even when the maximum diameter is as small as 0.8 mm. [Industrial Applicability]

[0030] According to the present invention, it is possible to provide an oily stick-shaped cosmetic composition that has thermal stability and drop strength even when the diameter is reduced.

Claims

1. (A) a first wax having a melting point of 70 to 120°C; (B) a second wax that is a paste at 20°C; (C) a third wax which is beeswax or microcrystalline wax; (D) diisostearyl malate, and (E) Powder An oily stick cosmetic composition comprising: (C) the melting point of the third wax is 55 to 85°C; (E) An oily stick-type cosmetic composition having a powder content of 40 to 70% by mass based on the total mass of the composition.

2. 2. The oily stick-type cosmetic composition according to claim 1, wherein (B) the second wax that is in a paste form at 20°C is one or more waxes selected from the group consisting of phytosteryl / isostearyl / cetyl / stearyl / behenyl dimer dilinoleate, dimer dilinoleyl bis(behenyl / isostearyl / phytosteryl) dimer dilinoleate, di(octyldodecyl / phytosteryl / behenyl) lauroyl glutamate, glyceryl tri(caprylate / caprate / myristicate / stearate), petrolatum, hydrogenated castor oil isostearate, and hydrogenated castor oil dimer dilinoleate.

3. 3. The oily stick-shaped cosmetic composition according to claim 1, wherein the third wax (C) is beeswax having a melting point of 55 to 85°C.

4. (A) The content of the first wax is 0.3 to 15 mass% based on the total amount of the composition, (B) The content of the second wax is 1 to 20 mass% based on the total amount of the composition, (C) The content of the third wax is 1 to 20 mass% based on the total amount of the composition, (D) The content of diisostearyl malate is 0.01 to 5% by mass based on the total amount of the composition. The oily stick-shaped cosmetic composition according to claim 1 or 2.

5. 3. The oily stick-type cosmetic composition according to claim 1, wherein the water content is 0.1% by mass or less based on the total mass of the composition.

6. 3. The oily stick-shaped cosmetic composition according to claim 1, which is a makeup cosmetic for eyebrows or eyes.

7. The oily stick-shaped cosmetic composition according to claim 6, which is for eyebrows.

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