JP7801735B2 - Stick-shaped oily solid cosmetics - Google Patents

Description

The present invention relates to a stick-shaped oily solid cosmetic product that can be used as a concealer, hair foundation, shading, etc.

BACKGROUND ART Stick-shaped oily solid cosmetics used as concealers, hair foundations, shading, etc. are known.
Patent Document 1 describes an oil-based foundation that is a blend of (1) plate-like powder having a particle size of 1 to 12 μm and an average particle size of 5 to 6 μm, and (2) spherical powder having a particle size of 4 to 10 μm, in which the blending ratio of the plate-like powder to the spherical powder is (1):(2)=1:1 to 1:4 by mass, and the blending amount of the spherical powder is 7 to 11 mass% (Claims).
It is stated that a foundation with an excellent pore-concealing effect not previously available can be obtained by using only one product (paragraph 0050).

Patent Document 2 describes an anhydrous composition comprising 3% to 15% by weight of at least one lipophilic gelling agent, 10% to 50% by weight of a filler including at least 5% by weight of a first filler and at least 5% by weight of a second filler different from the first filler, and 40% to 85% by weight of at least one fatty phase, where the amounts by weight are shown relative to the total weight of the composition, and the first filler and second filler are selected from spherical cellulose particles, powder of N-acylamino acid having C8 to C22 acyl groups, polyamide particles, and spherical porous silica particles. (Claims)
It is described that the composition can be used in skin, lip and/or eye care and/or makeup removal, in hair care compositions, as a deodorant or sunscreen product, and for cleansing the skin. (Paragraph No. 0208)

Japanese Patent Application Laid-Open No. 2003-146840 JP 2017-519831 A

The objective of the present invention is to provide a stick-shaped oily solid cosmetic product that is easy to mold and has a good finish (matt finish and uniform application).

The present invention provides a rod-shaped oily solid cosmetic preparation comprising (A) spherical cellulose and (B) petal-shaped calcium carbonate or a complex thereof,
the content of the component (A) in the stick-shaped oily solid cosmetic is 10% by mass or more, and the content of the component (B) is 1% by mass or more,
The present invention provides a stick-shaped oily solid cosmetic preparation in which the content of component (A) is 70 to 98 mass % and the content of component (B) is 2 to 30 mass % based on the total amount of component (A) and component (B).

The stick-shaped oily solid cosmetic preparation of the present invention has good productivity (ease of molding) and a good finish (matt finish and uniform application).

Component (A) is spherical cellulose.
The average particle size of component (A) is preferably 3 μm to 10 μm, and more preferably 5 μm to 8 μm.
The spherical cellulose is preferably a true sphere, where the minimum particle size is 80% or more, preferably 90% or more, of the maximum particle size.
The average particle size can be determined by determining the particle size distribution using a laser diffraction particle size distribution analyzer SALD-2100 (Shimadzu Corporation), and the particle size at 50% of the cumulative volume can be taken as the average particle size.

Component (B) is petal-like calcium carbonate or a complex containing petal-like calcium carbonate.
The petal-like shape of component (B) is a state in which flakes grow not in a fixed direction but in multiple directions to form an aggregate, and as component (B), for example, those described in JP 2006-063062 A can be used.
Component (B) can be a commercially available product, such as LDR CA (petal-shaped calcium carbonate, average particle size 13 μm) (manufactured by Toshoku Pigment Co., Ltd.) and Polonex C (petal-shaped calcium carbonate/calcium phosphate complex, average particle size 10 μm) (manufactured by Maruo Calcium Co., Ltd.).

Component (B) can be crushed to the extent that the petal shape is not damaged, and then classified as necessary. Crushers that can be used include compression crushers, shear crushers, impact crushers, ball media crushers, and airflow crushers. Classification can be performed using natural sedimentation methods, cyclone methods, etc.

The content of component (A) in the stick-shaped oily solid cosmetic is 5% by mass or more, and the content of component (B) is 1% by mass or more.
The total content of component (A) and component (B) in the stick-shaped oily solid cosmetic is preferably 11% by mass or more, in which case the content of component (A) is 10% by mass or more, and the content of component (B) is 1% by mass or more.
The content of component (A) in the total amount of component (A) and component (B) is 70 to 98 mass%, preferably 75 to 95 mass%, and the content of component (B) is 2 to 30 mass%, preferably 5 to 25 mass%.

The stick-shaped oily solid cosmetic preparation may further contain a pigment as component (C).
There are no particular limitations on the pigment as long as it is one that can be used in cosmetics, and for example, the following can be used.
Metal oxides such as titanium oxide, iron oxide, black titanium oxide, chromium oxide, and chromium hydroxide; ultramarine; Prussian blue; legal dyes such as Yellow No. 4 and its aluminum lake, Yellow No. 5 and its aluminum lake, Blue No. 1 and its aluminum lake, Red No. 104 aluminum lake, Red No. 201, Red No. 202, Red No. 218, Red No. 223, Red No. 226, Blue No. 404, Orange No. 205, Yellow No. 205, Green No. 201, Purple No. 201, Purple No. 401, and Black No. 401; natural dyes such as beta-carotene, carthamine, carmine, chlorophyll, and cochineal;
Luminous powders include pearl pigments such as bismuth oxychloride, mica titanium, iron oxide coated mica, iron oxide coated mica titanium, organic pigment treated mica titanium, and aluminum powder.

Of the total amount of components (A), (B), and (C), the content of component (A) is preferably 15 to 75% by mass, more preferably 18 to 70% by mass, the content of component (B) is preferably 1 to 20% by mass, more preferably 2 to 18% by mass, and the content of component (C) is preferably 20 to 84% by mass, more preferably 20 to 80% by mass.

The stick-shaped oily solid cosmetic preparation may further contain a wax as component (D).
The wax of component (D) may be any wax that is used in solid cosmetics, and one or more waxes selected from sunflower seed wax, candelilla wax, paraffin, carnauba wax, beeswax, rice bran wax, microcrystalline wax, synthetic wax, polyethylene, and (ethylene/propylene) copolymers can be used.
The synthetic wax in the present invention refers to "hydrocarbon wax obtained by the Fischer-Tropsch process or the ethylene polymerization process" listed in the "List of Cosmetic Ingredient Labeling Names" prepared by the Japan Cosmetic Industry Association.

The wax of component (D) preferably contains 65 to 85% by mass of a wax selected from synthetic waxes, polyethylene, and (ethylene/propylene) copolymers.
The content of component (D) in the stick-shaped oily solid cosmetic is preferably 30 to 130 parts by mass per 100 parts by mass of the total of components (A) and (B).

The stick-shaped oily solid cosmetic preparation may contain other components besides components (A) to (D) as long as the effects of the present invention are obtained.
Inorganic powders such as mica and silica (excluding pigments of component (C)), organic powders such as (HDI/PPG/polycaprolactone) crosspolymers, (HDI/trimethylolhexyllactone) crosspolymers, (HDI/trimethylolhexyllactone) crosspolymers, and other resin powders;
Moisturizing agents such as glycerin, propylene glycol, sorbitol, polyethylene glycol, dipropylene glycol, 1,3-butylene glycol, diglycerin, ethylhexylglycerin, pentanediol, hexanediol, caprylyl glycol, mannitol, POE methylglycoside, biopolymers, and sucrose;
Emollient ingredients such as mineral oil, petrolatum, paraffin wax, ceresin, polyethylene, hydrogenated polyisobutene, hydrogenated polydecene, synthetic wax, squalane, esters of higher fatty acids and higher alcohols, and oils and fats.
Preservatives and disinfectants such as methylparaben, ethylparaben, phenoxyethanol, sodium dehydroacetate, and isopropylmethylphenol,
surfactants such as esters of fatty acids and sucrose;
Ascorbyl dipalmitate, magnesium ascorbyl phosphate and other salts, ascorbyl glucoside, tocopherol, tocopherol acetate, retinol palmitate, nicotinamide, vitamins such as biotin and their derivatives, amino acids and their derivatives,
pH adjusters such as potassium hydroxide, sodium hydroxide, magnesium sulfate, triethanolamine, aminomethylpropanol, aminomethylpropanediol, citric acid, sodium citrate, lactic acid, and sodium lactate;
UV absorbers such as ethylhexyl methoxycinnamate, t-butyl methoxydibenzoylmethane, ethylhexyl triazone, octocrylene, and bisethylhexyloxyphenol methoxyphenyl triazine, antioxidants, fragrances, preservatives, chelating agents, and antioxidants.

The stick-shaped oily solid cosmetic preferably has a total powder component content of 25% by mass or more, including components (A), (B), and (C), more preferably 30% by mass or more, and even more preferably 33% by mass or more.

(A) Component Spherical cellulose: Product name "GE-800", manufactured by Toshiki Pigment Co., Ltd. (B) Component Petal-shaped calcium carbonate: Product name "LDR CA", manufactured by Toshiki Pigment Co., Ltd. (C) Component Titanium oxide: Product name "MP-1133", manufactured by Teika Corporation Iron oxide: Product names "TAROX Synthetic Iron Oxide R-516P", "TAROX Synthetic Iron Oxide LL-100P",
"TAROX Synthetic Iron Oxide BL-100P", manufactured by Titan Kogyo Co., Ltd. (D) Component: Mixture of synthetic wax and (ethylene/propylene) copolymer: Product name: "Lip Wax PZ80-20", manufactured by Nippon Natural Products Co., Ltd. Paraffin: Product name: "HNP-9", manufactured by Nippon Seiro Co., Ltd. Microcrystalline wax: Product name: "Refined Microcrystalline Wax", manufactured by Nikko Rica Corporation (Others)
Mica: Product name "Mica Powder Y-2200", manufactured by Yamaguchi Mica Co., Ltd. (HDI/PPG/Polycaprolactone) crosspolymer (containing silica): Product name "CS-400", manufactured by Toshoku Pigment Co., Ltd. (HDI/trimethylol hexyl lactone) crosspolymer (containing silica): Product name "D-400", manufactured by Toshoku Pigment Co., Ltd. (HDI/trimethylol hexyl lactone) crosspolymer (containing methyl methacrylate crosspolymer): Product name "UP-611", manufactured by Toshoku Pigment Co., Ltd. Hexyldecyl isostearate: Product name "ICIS", manufactured by Nippon Surfactant Industrial Co., Ltd. Triethylhexanoin: Product name "Trifat S-308", manufactured by Nippon Surfactant Industrial Co., Ltd. Diisostearyl malate: Product name "Cosmol 222", manufactured by Nisshin Oillio Group, Ltd. Polyglyceryl-2 oleate: Product name "NIKKOL DGMO-CV", manufactured by Nippon Surfactant Industrial Co., Ltd. PEG-20 glyceryl triisostearate: Product name "NIKKOL TGI-20", manufactured by Nippon Surfactant Industrial Co., Ltd. Phenoxyethanol: Product name "2-Phenoxyethanol S", manufactured by Kobayashi Fragrance Co., Ltd. Ethylhexylglycerin, tocopherol: Product name "Sensiva SC50-JP", manufactured by Schulke & Mayr GmbH Tocopherol: Product name "d-δ-Tocopherol", manufactured by Tama Biochemical Co., Ltd.

Examples and Comparative Examples The oil phase component (II) in Table 1 was heated and melted using a paddle mixer at 80 to 100°C until transparent, and the powder phase component (I) in Table 1 was added and mixed. The mixture of (I) and (II) was then uniformly mixed using a three-roller to prepare a molten cosmetic composition.
The composition obtained in the previous step was heated to 80 to 100°C, and defoamed while stirring using a vacuum defoamer, and then filled into a container or molded to obtain a stick-shaped oily solid cosmetic.

(1) Productivity (ease of molding)
The cosmetics of the Examples and Comparative Examples were filled into containers, cooled, and the degree of shrinkage of the filled products was confirmed.
○: The molded product did not shrink significantly during cooling or after solidification, and no correction work was required.
△: The molded product shrank during cooling or after solidification, and required correction work such as reheating.
×: The molded product underwent significant shrinkage during cooling or after solidification, and could not be corrected by reheating or the like.

(2) Finish (matt finish)
The cosmetics of the Examples and Comparative Examples were applied to a part of the face. After finishing with a normal makeup application method, the applied surface was visually observed and evaluated according to the following criteria.
◯: There was no gloss like with crayons, and a matte finish was obtained.
△: The gloss was not due to excess oil, but the gloss characteristic of oily cosmetics such as foundation was obtained.
×: Shine due to oil in the cosmetic was noticeable.

(3) Finish (uniformity of application)
The cosmetics of the Examples and Comparative Examples were applied to a part of the face. The applied surface was visually observed before and during application, and after finishing using a normal makeup application method, and evaluated according to the following criteria.
◯: When the cosmetic is spread, no or almost no stroke lines remain, and the finish can be easily and uniformly applied.
△: Stroke lines remain when the cosmetic is spread, but if applied carefully it can be applied evenly.
×: When the cosmetic is spread, stroke lines remain and the finish is not uniform.

(4) Stability and evaluation of stability (hardness)
The cosmetics of the Examples and Comparative Examples were filled into cosmetic containers or molded, and then the hardness (initial value) of the cosmetics was measured using a Rheotex SD-700II physical property measuring device. The cosmetics were left to stand for 6 hours in a thermostatic chamber at 30°C, and the hardness (over time) of the cosmetics was measured after being left to stand for 4 weeks in a thermostatic chamber at 40°C. Stability was evaluated according to the following criteria.
◯: The range is −0.3≦(1−aged value/initial value)≦0.3.
×: The formula (1-aged value/initial value) is less than -0.3 or more than 0.3.

The stick-shaped oily solid cosmetic composition of the present invention can be used as a concealer, hair foundation, shading, etc.

Claims (5)

A rod-shaped oily solid cosmetic comprising (A) spherical cellulose and (B) petal-shaped calcium carbonate or a complex thereof,
the content of the component (A) in the stick-shaped oily solid cosmetic is 10% by mass or more, and the content of the component (B) is 1% by mass or more,
The content of component (A) is 70 to 98 mass% and the content of component (B) is 2 to 30 mass% in the total amount of component (A) and component (B),
The stick-shaped oily solid cosmetic further contains (D) one or more waxes selected from paraffin, microcrystalline wax, synthetic wax, and (ethylene/propylene) copolymer, and the amount of component (D) is 30 to 130 parts by mass per 100 parts by mass of the total of components (A) and (B) . The stick-shaped oily solid cosmetic preparation according to claim 1 further contains a pigment (C), wherein the content of component (A) is 15 to 75% by mass, the content of component (B) is 1 to 20% by mass, and the content of component (C) is 20 to 84% by mass, based on the total amount of components (A), (B), and (C). 3. The stick-shaped oily solid cosmetic preparation according to claim 2 , wherein the total content of the powder components including components (A), (B), and (C) is 25% by mass or more. 4. The stick-shaped oily solid cosmetic preparation according to claim 1 , wherein the wax of component (D) is selected from synthetic waxes and ethylene/propylene copolymers and the content of the wax in component (D) is 65 to 85% by mass. 5. The stick-shaped oily solid cosmetic preparation according to any one of claims 1 to 4 , which is used as a product selected from the group consisting of concealer, hair foundation, and shading.