CN105997577B - Gel-like oil-in-water type cosmetic - Google Patents

Gel-like oil-in-water type cosmetic Download PDF

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Publication number
CN105997577B
CN105997577B CN201511009170.7A CN201511009170A CN105997577B CN 105997577 B CN105997577 B CN 105997577B CN 201511009170 A CN201511009170 A CN 201511009170A CN 105997577 B CN105997577 B CN 105997577B
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oil
gel
water type
type cosmetic
mass
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CN105997577A (en
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铃木真由子
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Fujifilm Corp
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Fujifilm Corp
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/89—Polysiloxanes
    • A61K8/895—Polysiloxanes containing silicon bound to unsaturated aliphatic groups, e.g. vinyl dimethicone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04—Dispersions; Emulsions
    • A61K8/042—Gels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • A61K8/8135—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid; Compositions of derivatives of such polymers, e.g. vinyl esters (polyvinylacetate)
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • A61K8/8141—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • A61K8/8147—Homopolymers or copolymers of acids; Metal or ammonium salts thereof, e.g. crotonic acid, (meth)acrylic acid; Compositions of derivatives of such polymers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • A61K8/8141—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • A61K8/8152—Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/86—Polyethers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/89—Polysiloxanes
    • A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
    • A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
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  • Birds (AREA)
  • Epidemiology (AREA)
  • Dermatology (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Cosmetics (AREA)

Abstract

A gel-like oil-in-water type cosmetic composition comprising an organic ultraviolet absorber, an aqueous medium, a polyoxyalkylene methyl glucoside represented by the following general formula (1), a gelling agent, and a powder containing a silicone resin on at least a part of the surface thereof, wherein the total content of the aqueous medium is 55% by mass or more relative to the total amount of the gel-like oil-in-water type cosmetic composition (in the general formula (1), R represents a hydrogen atom or a methyl group, and n represents the average molar number of addition of ethylene oxide or propylene oxide is 5 to 50.). General formula (1) CH3C6H10O5(OC(R)H‑CH2)nOH。

Description

Gel-like oil-in-water type cosmetic
Technical Field
The present invention relates to a gel-like oil-in-water cosmetic.
Background
Sunscreen cosmetics that protect the skin from ultraviolet rays are known.
As such a sunscreen cosmetic, for example, japanese patent application laid-open No. 2004-123543 discloses "a skin external preparation containing octylmethoxy cinnamate, titanium oxide and/or zinc oxide powder, and polyoxyethylene methyl glucoside and/or polypropylene methyl glucoside", japanese patent laid-open No. 2012-506437 discloses "a sunscreen composition containing inorganic metal oxide sunscreen particles and methyl cellulose", and japanese patent laid-open No. 2012-open No. 506438 discloses "a sunscreen composition containing inorganic metal oxide sunscreen particles and hydroxypropylmethyl cellulose having DS methoxy group of less than 1.7".
Disclosure of Invention
Problems to be solved by the invention
In recent years, gel-like oil-in-water type cosmetics having a moist touch have been studied. Gel-like oil-in-water type cosmetics are cosmetics having a moist touch, but on the other hand, sometimes have insufficient moisturizing power. Further, when an organic ultraviolet absorber is blended in a gel-like oil-in-water type cosmetic, a large amount of oil components are often contained, and when the gel-like oil-in-water type cosmetic is applied to the skin, the feel becomes sticky, and it is sometimes difficult to obtain a refreshing and moist feel.
Furthermore, although the sunscreen cosmetic compositions described in jp 2004-123543, jp 2012-506437, and jp 2012-506438 contain inorganic particles having uv-shielding ability and methyl gluceth (methyl gluceth), when a large amount of inorganic particles are contained, a special feeling remains, and it may be difficult to obtain a refreshing and moist feeling. In cosmetics, the touch feeling when applied to the skin is one of important factors, and particularly, a refreshing and moist touch feeling is currently preferred by users of cosmetics.
In general, in cosmetics, a moist touch is impaired if the cosmetic has a sticky touch, and therefore, a method of obtaining a non-sticky touch while maintaining the moist touch has been studied.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a gel-like oil-in-water type cosmetic containing an organic ultraviolet absorber, which has a moist and non-greasy feeling and is excellent in the persistence of a moist feeling.
Means for solving the problems
Specific means for solving the above problems are as follows.
<1> a gel-like oil-in-water type cosmetic composition comprising an organic ultraviolet absorber, an aqueous medium, a polyoxyalkylene methyl glucoside represented by the following general formula (1), a gelling agent, and a powder containing a silicone resin at least in part of the surface thereof,
the total content of the aqueous medium is 55% by mass or more based on the total amount of the gel-like oil-in-water type cosmetic.
[ chemical formula 1]
General formula (1) CH3C6H10O5(OC(R)H-CH2)nOH
In the general formula (1), R represents a hydrogen atom or a methyl group, and n representing the average addition mole number of ethylene oxide or propylene oxide is 5 to 50.
<2> the gel-like oil-in-water type cosmetic composition according to <1>, wherein the organic ultraviolet absorber contains a silicone-type ultraviolet absorber.
<3> the gel-like oil-in-water type cosmetic composition according to <2>, wherein the silicone-type ultraviolet absorber is polydimethylsiloxane diethylbenzylidene malonate.
<4> the gel-like oil-in-water type cosmetic material according to any one of <1> to <3>, wherein n in the general formula (1) represents an average molar number of addition of ethylene oxide or propylene oxide and is 10 to 25.
<5> the gel-like oil-in-water cosmetic according to any one of <1> to <4>, wherein the content of the polyoxyalkylene methyl glucoside represented by the general formula (1) is 2% by mass or more based on the total amount of the gel-like oil-in-water cosmetic.
<6> the gel-like oil-in-water type cosmetic composition according to any one of <1> to <5>, wherein the gelling agent is a polymer of 1 or more monomers selected from the group consisting of acrylic acid, methacrylic acid and alkyl esters thereof.
<7> the gel-like oil-in-water type cosmetic composition according to any one of <1> to <6>, wherein the gelling agent is an alkyl-modified carboxyvinyl polymer.
<8> the gel-like oil-in-water type cosmetic material according to any one of <1> to <7>, wherein the silicone resin in the powder is a vinyl polydimethylsiloxane/polymethylsiloxane silsesquioxane crosslinked polymer.
<9> the gel-like oil-in-water type cosmetic material according to any one of <1> to <8>, wherein the powder has a core-shell structure having a coating layer containing a silicone resin on a surface of a core portion.
Effects of the invention
According to the present invention, a gel-like oil-in-water type cosmetic containing an organic ultraviolet absorber can be provided, which has a moist and non-greasy touch and is excellent in the persistence of a moisturizing feeling.
Detailed Description
The present invention is not limited to the embodiments described below, and can be carried out with appropriate modifications within the scope of the object of the present invention.
In the present specification, the numerical range expressed by the term "to" means a range including numerical values before and after the term "to" as a minimum value and a maximum value, respectively.
In the present specification, the amount of each component in the gel-like oil-in-water type cosmetic refers to the total amount of a plurality of substances present in the gel-like oil-in-water type cosmetic, unless otherwise specified, when a plurality of substances corresponding to each component are present in the gel-like oil-in-water type cosmetic.
[ gel-like oil-in-water type cosmetic preparation ]
The gel-like oil-in-water type cosmetic composition (hereinafter, may be simply referred to as "cosmetic composition") of the present invention contains an organic ultraviolet absorber, an aqueous medium, a polyoxyalkylene methyl glucoside represented by the general formula (1) (hereinafter, may be referred to as "specific compound"), a gelling agent, and a powder having a silicone resin in at least a part of the surface thereof (hereinafter, may be referred to as "specific powder"), and the total content of the aqueous medium is 55 mass% or more with respect to the total amount of the gel-like oil-in-water type cosmetic composition.
In the present invention, the term "gel-like" refers to a semisolid state having fluidity.
More specifically, the "gel state" is preferably a state in which the viscosity of the measurement object is 5000 mPas or more, preferably 15000 mPas or more and 100000 mPas or less, when measured at 25 ℃ and 1 atm using a B-type viscometer (for example, TVB-10 (trade name, manufactured by Toyobo industries, measurement conditions: rotor No.4, rotation speed 6rpm, measurement time 60 seconds) or the like), for example.
The present inventors have found that the effect of the present invention, in which a moisturizing agent having a specific structure such as polyoxyalkylene methyl glucoside (specific compound) represented by general formula (1) and a specific powder having a silicone resin on the surface are used together with an organic ultraviolet absorber, an aqueous medium, and a gelling agent to produce a gel-like oil-in-water type cosmetic having an aqueous medium content of 55 mass% or more, can be achieved while maintaining water-retention and while achieving a non-sticky feel, the moisturizing effect can be maintained.
That is, the gel-like oil-in-water type cosmetic of the present invention has a moist and non-greasy feeling and is excellent in the persistence of a moisturizing feeling.
This effect is an effect that cannot be obtained when a known humectant (e.g., glycerin, a humectant having a glycerin skeleton) that is not a specific compound is used.
The "sticky" and "sticky feeling" in the present invention mean the feeling after applying a cosmetic to the skin, and mean the feeling accompanied by sticking or adhesion between a finger or the like and the skin to which the cosmetic is applied.
"moist" and "moist touch" refer to the touch when a cosmetic is applied to the skin, and refer to a dry (non-sticky) touch accompanied by a moist touch due to moisture.
The term "moist feeling" means a moist feeling, and "continuation of moist feeling" means that a moist feeling is continued after the cosmetic is applied to the skin.
In particular, the "water-retention" can be quantified by a rheological method as described in FRAGRACE JOURNAL 2012-3P.17-22, for example, and the "water-retention" can be represented by the size of the H-B index derived from the analysis of the Herschel-Bulkley equation (H-B equation), for example. Further, "water-wet" can also be quantified by analysis of Nutting formula.
Hereinafter, each component contained in the gel-like oil-in-water type cosmetic of the present invention will be described in detail.
[ organic ultraviolet absorber ]
The organic ultraviolet absorber used in the present invention is not limited as long as it is an organic compound having an ultraviolet absorbing action, and various organic ultraviolet absorbers can be used.
The form of the organic ultraviolet absorber at room temperature (25 ℃) is not limited to solid, semisolid, or liquid.
Specific examples of the organic ultraviolet absorber include ethylhexyl methoxycinnamate, octocrylene, hexyl diethylaminohydroxybenzoylbenzoate, silicone-type ultraviolet absorbers, homosalate, tert-butyl methoxydibenzoylmethane, ethylhexyl salicylate, ethylhexyl triazone, bisethylhexyloxyphenol methoxyphenyl triazine, methylenebisbenzotriazolyl tetramethylbutylphenol, benzophenone-3, ethylhexyl dimethyl PABA (2-ethylhexyl p-dimethylaminobenzoate), and cresoltrimetrexol.
Among them, a silicone type ultraviolet absorber is preferable from the viewpoint of improving the wettability.
The silicone-type ultraviolet absorber is a silicone polymer to which an ultraviolet absorber is bonded, and in the present invention, a silicone polymer to which a cinnamate is bonded is cited as a preferable example. Specific examples of the silicone-based ultraviolet absorber include polydimethylsiloxane diethylbenzylidene malonate (Polysilicone-15).
The organic ultraviolet absorber may be used alone in 1 kind, or may be used in combination of 2 or more kinds.
In the present invention, it is preferable to use 2 or more organic ultraviolet absorbers in combination in order to absorb UV-A waves (wavelength 320nm to 400nm) and UV-B waves (wavelength 280nm to 320 nm).
A preferable combination is a combination of 1 or more kinds of organic ultraviolet absorbers which absorb at a wavelength of UV-A wave and 1 or more kinds of organic ultraviolet absorbers which absorb at a wavelength of UV-B wave. In this case, the organic ultraviolet absorber having absorption at the wavelength of UV-B wave is preferably a silicone type ultraviolet absorber.
The content of the organic ultraviolet absorber in the gel-form oil-in-water type cosmetic of the present invention may be determined depending on the kind of the organic ultraviolet absorber used and the ultraviolet absorption ability. For example, the organic ultraviolet absorber is preferably 0.01 mass% or more, more preferably 0.1 mass% or more, based on the total amount of the gel-like oil-in-water type cosmetic, from the viewpoint of exhibiting ultraviolet absorbing ability.
The upper limit of the content of the organic ultraviolet absorber may be determined depending on the upper limit of the content of the organic ultraviolet absorber in the cosmetic composition defined for each organic ultraviolet absorber, but is preferably 50% by mass or less, more preferably 30% by mass or less, based on the total amount of the gel-like oil-in-water type cosmetic composition, from the viewpoint of the feeling of use.
The upper limit of the amount of the above-mentioned components in the cosmetic composition is, for example, 20g of ethylhexyl p-methoxycinnamate, 10g of hexyl p-diethylaminohydroxybenzoylbenzoate, 3g of bis-ethylhexyloxyphenol methoxyphenyl triazine and 10g of polydimethylsiloxane diethylbenzylidene malonate, based on 100g of the cosmetic composition.
When the silicone-type ultraviolet absorber is used as the organic ultraviolet absorber, the content thereof is preferably 0.01% by mass or more and 30% by mass or less, more preferably 0.05% by mass or more and 20% by mass or less, and still more preferably 0.05% by mass or more and 10% by mass or less, with respect to the total amount of the gel-like oil-in-water type cosmetic composition, from the viewpoints of improvement in moisture and ultraviolet absorptivity.
[ aqueous Medium ]
The "aqueous medium" in the present invention includes a water-soluble solvent in addition to water.
In order to obtain the form of the gel-like oil-in-water type cosmetic, the total content of the aqueous medium (water and water-soluble solvent) in the present invention is 55 mass% or more, preferably 55 mass% or more, and more preferably 60 mass% or more, based on the total amount of the gel-like oil-in-water type cosmetic. In addition, the upper limit is preferably 99 mass% or less, and more preferably 80 mass% or less, with respect to the total amount of the gel-like oil-in-water type cosmetic, from the viewpoint of the feeling of use.
The water-soluble solvent is an organic solvent having a solubility of 10 mass% or more at 25 ℃ with respect to water.
The water contained in the aqueous medium is not particularly limited, and any of ultrapure water such as tap water, natural water, purified water, distilled water, ion-exchanged water, pure water, and Milli Q water can be used. The Milli Q water is ultrapure water obtained by a Milli Q water production apparatus, which is an ultrapure water production apparatus manufactured by Merck Millipore corporation.
Among them, preferred examples of water used in the gel-like oil-in-water type cosmetic of the present invention include purified water, distilled water, ion-exchanged water, pure water, Milli Q water, and the like, from the viewpoint of reducing impurities.
In order to obtain the form of the gel-like oil-in-water type cosmetic, the content of water in the gel-like oil-in-water type cosmetic of the present invention is preferably 50 to 80% by mass, and more preferably 53 to 70% by mass, based on the total amount of the gel-like oil-in-water type cosmetic, from the viewpoint of feeling of use.
Examples of the water-soluble solvent contained in the aqueous medium include methanol, ethanol, 1-propanol, 2-butanol, acetone, tetrahydrofuran, acetonitrile, methyl ethyl ketone, dipropylene glycol monomethyl ether, methyl acetate, methyl acetoacetate, N-methylpyrrolidone, dimethyl sulfoxide, ethylene glycol, 1, 3-butanediol, 1, 4-butanediol, propylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, and glycerin.
The water-soluble solvent may contain only 1 kind, or 2 or more kinds may be used in combination.
The content of the water-soluble solvent in the gel-like oil-in-water type cosmetic of the present invention can be appropriately selected according to the purpose. From the viewpoint of feeling of use and the like, the content of the water-soluble solvent is preferably 25% by mass or less, more preferably 5% by mass or more and 20% by mass or less, relative to the total amount of the gel-like oil-in-water type cosmetic.
[ polyoxyalkylene methyl glucoside (specific compound) represented by general formula (1) ]
Specific compounds used in the present invention will be described.
The specific compound is polyoxyalkylene methyl glucoside represented by the following general formula (1).
The specific compound is obtained by addition polymerization of ethylene oxide or propylene oxide to methyl glucoside.
[ chemical formula 2]
General formula (1) CH3C6H10O5(OC(R)H-CH2)nOH
In the general formula (1), R represents a hydrogen atom or a methyl group, and n representing the average addition mole number of ethylene oxide or propylene oxide is 5 to 50.
From the viewpoint of the feeling in use, R in the general formula (1) is preferably a hydrogen atom.
From the viewpoint of suppressing stickiness, n in the general formula (1) is preferably 5 to 30, and more preferably 10 to 25.
As the specific compound, commercially available products can be used.
Examples of the polyoxyethylene methylglucoside include NIKKOL (registered trademark) BMG-10 (trade name), NIKKOL (registered trademark) BMG-20 (trade name), Glucame-10 (trade name), Glucame-20 (trade name), MACBIOBRIDE (registered trademark) MG-10E (trade name), MACBIOBRIDE (registered trademark) MG-20E (trade name), and the like.
Examples of the polyoxypropylene methylglucoside include GlucamP-10 (trade name) and GlucamP-20 (trade name) manufactured by Lubrizol corporation, MACBIOBRIDE (registered trademark) MG-10P (trade name) manufactured by Nippon oil Co., Ltd, and MACBIOBRIDE (registered trademark) MG-20P (trade name).
The specific compound may contain only 1 species, or 2 or more species may be used in combination.
The content of the specific compound in the gel-like oil-in-water type cosmetic of the present invention is preferably 1 to 40% by mass, more preferably 1 to 12% by mass, even more preferably 2 to 10% by mass, and particularly preferably 5 to 10% by mass, based on the total amount of the gel-like oil-in-water type cosmetic, from the viewpoints of improving the moisturizing feeling and suppressing the stickiness.
[ gelling agent ]
The gel-like oil-in-water cosmetic of the present invention contains a gelling agent.
The gelling agent used in the present invention is not particularly limited as long as it is a gelling agent capable of forming a gel-like oil-in-water type cosmetic, but is preferably a polymer of 1 or more monomers selected from the group consisting of acrylic acid, methacrylic acid, and alkyl esters thereof, from the viewpoints of oil-in-water type emulsion stability, spreadability of the cosmetic, and water-wettability. As the polymer, concretely, a carboxyvinyl polymer, an alkyl-modified carboxyvinyl polymer, or the like can be used. They may or may not have a crosslinked structure.
Among them, commercially available products of carboxyvinyl polymers include Carbopol 940 (trade name), Carbopol 941 (trade name), Carbopol980 (trade name), Carbopol 981 (trade name), Carbopol ETD2050 (trade name), manufactured by Lubrizol Advanced Materials, Hiviswako (registered trademark) 103, Hiviswako (registered trademark) 104, Hiviswako (registered trademark) 105, Synthalen K (trade name), manufactured by 3V SIGMA, and Synthalen L (trade name).
Further, commercially available products of the alkyl-modified carboxyvinyl polymer include Carbopol 1382 (trade name), Pemulen TR-1 (trade name), Pemulen TR-2 (trade name), Carbopol ULTREZ-20 (trade name), Carbopol ULTREZ-21 (trade name), Carbopol ETD2020 (trade name), and Carbopol 1342 (trade name) manufactured by Lubrizol Advanced Materials.
In the present invention, the alkyl-modified carboxyvinyl polymer is preferable from the viewpoint of the persistence of the moisturizing feeling and the suppression of stickiness. The alkyl-modified carboxyvinyl polymer is a copolymer of (meth) acrylic acid and an alkyl acrylate, a copolymer of (meth) acrylic acid and an alkyl methacrylate, a homopolymer of an alkyl acrylate, or a homopolymer of an alkyl methacrylate, but is preferably hydrophilic, and is preferably a copolymer of (meth) acrylic acid and an alkyl acrylate in view of viscosity stability.
The copolymer of (meth) acrylic acid and alkyl acrylate may be any compound that is generally used in cosmetics, and specific examples thereof include (acrylates/alkyl acrylates (C10-30)) crosslinked polymers, and among them, (acrylates/alkyl acrylates (C10-30)) crosslinked polymers are preferable from the viewpoint of viscosity stability.
The gelling agent may be contained in 1 species alone, or 2 or more species may be used in combination.
From the viewpoint of viscosity stability in the form of obtaining the gel-like oil-in-water type cosmetic, the content of the gelling agent in the gel-like oil-in-water type cosmetic of the present invention is preferably 0.01 to 5% by mass, more preferably 0.05 to 2% by mass, and still more preferably 0.1 to 1% by mass, based on the total amount of the gel-like oil-in-water type cosmetic.
[ powder having silicone resin in at least part of the surface thereof (specific powder) ]
The specific powder used in the present invention can suppress stickiness to a cosmetic material and impart a dry feeling to the cosmetic material by the action of the silicone resin present on the surface.
The specific powder may be a powder having a silicone resin only on the surface, or may be a powder having a silicone resin as a whole.
The specific powder may have a core-shell structure having a coating layer on the surface of the core. In the case of the specific powder having a core-shell structure, the silicone resin may be contained only in the coating layer, or may be contained in the coating layer and the core.
The silicone resin contained in the coating layer may be the same as or different from the silicone resin contained in the core.
In the case of a specific powder having a core-shell structure, it is preferable that the coating layer contains a silicone resin and the core contains a silicone compound, from the viewpoint of imparting a dry feel and further suppressing stickiness.
In particular, from the viewpoint of improving the feeling of use, a specific powder having a core-shell structure in which the core portion contains a silicone rubber and the coating layer contains a silicone resin is particularly preferable. Examples of commercially available products of such specific powders include "silicone composite powder" series, "KPM-600" (trade name), "KPM-601" (trade name), "KPM-602" (trade name), "KPM-605" (trade name), and "X-52-7030" (trade name) manufactured by shin-Etsu chemical industries.
The silicone resin constituting the specific powder is not particularly limited, but from the viewpoint of the feeling of use, a vinyl dimethicone/polymethylsiloxane silsesquioxane crosspolymer (cosmetic expression name: (vinyl dimethicone/polymethylsiloxane silsesquioxane) crosspolymer), (diphenyl dimethicone/vinyl diphenyl dimethicone/silsesquioxane) crosspolymer, a Polysilicone-1 crosspolymer, and a Polysilicone-22 are preferable, and among them, a vinyl dimethicone/polymethylsiloxane silsesquioxane crosspolymer is preferable.
The specific powder may contain only 1 species, or 2 or more species may be used in combination.
The content of the specific powder in the gel-like oil-in-water cosmetic of the present invention is preferably 0.1 to 5% by mass, more preferably 0.5 to 4% by mass, based on the total amount of the gel-like oil-in-water cosmetic, from the viewpoint of suppressing stickiness.
[ other Components ]
The gel-like oil-in-water type cosmetic of the present invention may contain other components than the organic ultraviolet absorber, the aqueous medium, the specific compound, the gelling agent, and the specific powder, as desired.
Hereinafter, other components usable in the gel-like oil-in-water type cosmetic of the present invention will be described.
(emulsifiers)
In the gel-like oil-in-water type cosmetic of the present invention, an emulsifier is preferably used.
The emulsifier is not particularly limited as long as it is an emulsifier applicable to cosmetics.
Examples of the emulsifier include surfactants. The surfactant may be any of an anionic surfactant, a cationic surfactant, an amphoteric surfactant, or a nonionic surfactant.
Examples of the ionic surfactant include alkylsulfonates, alkylsulfates, monoalkylphosphates, and lecithins.
Examples of the nonionic surfactant include sorbitan fatty acid esters, glycerin fatty acid esters, organic acid monoglycerides, polyglycerol fatty acid esters, propylene glycol fatty acid esters, polyglycerol condensed ricinoleic acid esters, sucrose fatty acid esters, polyethylene glycol fatty acid esters, polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, polyoxyethylene alkylphenyl ethers, polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbitol fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyoxyethylene propylene glycol fatty acid esters, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, and polyoxyethylene phytosterols.
The surfactant may be used alone in 1 kind, or may be used in combination of 2 or more kinds.
When the emulsifier is used in the gel-like oil-in-water cosmetic of the present invention, the content of the emulsifier is preferably 0.1 to 15% by mass, more preferably 0.1 to 10% by mass, based on the total amount of the gel-like oil-in-water cosmetic, from the viewpoint of emulsion stability.
(ultraviolet-diffusing inorganic powder)
The gel-form oil-in-water type cosmetic of the present invention may contain an inorganic powder having ultraviolet light diffusibility within a range not to impair the effects of the present invention.
Examples of the inorganic powder having ultraviolet light diffusibility include inorganic powders such as titanium oxide and zinc oxide.
The surface of the inorganic powder may be coated or uncoated, and may be used as long as it can be stably dispersed in the cosmetic.
The coating agent for coating the inorganic powder may be either an inorganic substance or an organic substance, and may be appropriately selected depending on the system of the cosmetic to which the inorganic powder is added.
(other additional ingredients)
The gel-like oil-in-water type cosmetic of the present invention may contain, as appropriate, additives that are generally used in the field of cosmetics, within a range that does not impair the effects of the present invention.
Examples of the additive component include functional components that exhibit useful cosmetic effects (e.g., moisturizing effect, whitening effect, and skin-conditioning effect) when used in cosmetics. Examples of such functional ingredients include emollients such as isotridecyl isononanoate; vitamin E such as tocopherol and tocotrienol; ubiquinone such as coenzyme Q10; polysaccharides such as hyaluronic acid; active ceramides such as ceramide 1, ceramide 2, ceramide 3, ceramide 5, and ceramide 6; glycosphingolipids such as glucosylceramide and galactosylceramide; hydrolyzed collagen, water-soluble collagen, and other collagens; amino acids such as acetyl hydroxyproline, hydrolyzed lupin protein, etc.
Examples of the additive components include oils such as isopropyl lauroyl sarcosinate, emulsion stabilizers such as cetyl alcohol, preservatives such as phenoxyethanol and methyl paraben, antioxidants, colorants, thickeners, pH adjusters such as potassium hydroxide, sodium hydroxide and hydrochloric acid, buffers, perfumes, antibacterial agents, active oxygen scavengers, antimicrobial agents, anti-inflammatory agents, and minerals.
[ form of cosmetic Material ]
The gel-like oil-in-water type cosmetic of the present invention can be used for sunscreen cosmetics such as skin, body and scalp, skin care cosmetics such as lotion (lotion), makeup cosmetics such as cream, deodorant cosmetics, scalp and hair cosmetics, but is not limited thereto.
[ method for producing gel-like oil-in-water type cosmetic preparation ]
The method for producing the gel-like oil-in-water type cosmetic of the present invention is not particularly limited. The gel-form oil-in-water type cosmetic of the present invention can be obtained by a known method for producing a gel-form oil-in-water type cosmetic by using other components such as an emulsifier as needed in an organic ultraviolet absorber, an aqueous medium, a specific compound, a gelling agent, and a specific powder.
One of the preferred methods for producing the gel-like oil-in-water type cosmetic composition of the present invention is a method in which an oil phase composition containing an organic ultraviolet absorber and a specific powder is mixed with an aqueous phase composition containing an aqueous medium, a specific compound and a gelling agent, and the mixture is emulsified by a conventional method.
Hereinafter, a preferred method for producing the gel-like oil-in-water type cosmetic is described in detail.
The following methods can be exemplified: for example, a) an aqueous medium, a specific compound, a gelling agent, an emulsifier and a preservative are heated and mixed to obtain an aqueous phase composition, b) an organic ultraviolet absorber, a specific powder, an emulsifier, an emollient and an emulsion stabilizer are heated and mixed to obtain an oil phase composition, and then, c) the aqueous phase composition and the oil phase composition are mixed under stirring to carry out emulsion dispersion.
The aqueous phase composition and the oil phase composition are preferably heated during mixing (for example, 65 ℃ to 90 ℃).
The method for emulsification and dispersion is not particularly limited, and examples thereof include a stirrer, a blade mixer, a vane mixer, a homomixer, a dispersion mixer, a super mixer, a homogenizer, a high-pressure homogenizer, and an ultrasonic homogenizer.
The heating temperature when the aqueous phase composition and the oil phase composition are heated and mixed is not particularly limited, and a preferable range can be appropriately set, and usually, a preferable range is set to be within a range of 65 to 90 ℃. By this heating, an aqueous phase composition and an oil phase composition are prepared in a state in which the dissolved components are dissolved.
When a homogenizer is used for emulsification dispersion, the components may be stirred at 500 to 8000rpm for 5 to 60 minutes as the conditions. Further, the conditions may be changed to carry out emulsification dispersion 2 times or more.
Examples
The present invention will be described more specifically with reference to the following examples, but the present invention is not limited to the following examples as long as the invention does not depart from the gist thereof.
[ examples 1 to 8 and comparative examples 1 to 12 ]
[ preparation of cosmetic preparation ]
The components constituting the oil phase compositions described in tables 1 to 6 below were dissolved by heating at 80 ℃ to obtain oil phase compositions (the numerical values described in the columns of the components in tables 1 to 6 represent the content (mass%) of the components relative to the total amount of the cosmetic).
Similarly, the ingredients constituting the aqueous phase compositions described in tables 1 to 6 below were dissolved by heating at 80 ℃ to obtain aqueous phase compositions (the numerical values described in the columns of the ingredients in tables 1 to 6 indicate the content (mass%) of the ingredients with respect to the total amount of the cosmetic).
The resulting oil phase composition and water phase composition were mixed, and stirred at 1000rpm for 3 minutes and then at 3000rpm for 3 minutes using a homogenizer (HM-310 (trade name) manufactured by AS ONE corporation) to obtain a crude emulsion.
Then, the obtained crude emulsion was cooled to 40 ℃ and adjusted so that the pH thereof became 6.4 to 6.8 using a 0.8 mol/L potassium hydroxide aqueous solution.
In the same manner as above, the oil-in-water type cosmetics of examples 1 to 8, the oil-in-water type cosmetics of comparative examples 1,3 to 12, and the cosmetics of comparative example 2 were prepared.
Example 1 shown in tables 1 and 3 below is an example described for comparison with other examples and comparative examples, and is the same example, and example 2 shown in tables 2 to 6 below is an example described for comparison with other examples and comparative examples, and is all the same example.
The details of each component described in tables 1 to 6 below are as follows.
BG: 1, 3-butane diol (1, 3-butanediol)
DPG: dipropylene glycol
Diethylaminohydroxybenzoylbenzoic acid hexyl ester: uvinul (registered trademark) A Plus Glanular, BASF Japan Co
Bis-ethylhexyloxyphenol methoxyphenyl triazine: tinosorb (registered trademark) S, BASF Japan Co
Polydimethylsiloxane diethylbenzylidene malonate: polysilicone-15
Isotridecyl isononanoate: EMALEX (registered trademark) INTD-139 (EMULSION, Japan Co., Ltd.)
(acrylates/alkyl acrylates (C10-30)) crosslinked Polymer: carbopol ULTREZ-20 (trade name, Lubrizol Advanced Materials Co., Ltd.)
Carboxyvinyl polymer: carbopol980 (trade name, Lubrizol Advanced Materials Co., Ltd.)
PEG-30 phytosterols: NIKKOL (registered trademark) BPS-30 (sunlight chemical Co., Ltd.)
PEG/PPG/polytetramethylene glycol-8/5/3 glycerol: WILBRIDE S-75 (trade name, Nikkiso Co., Ltd.)
Lauroyl sarcosinate isopropyl ester: ELDEW SL-205 (trade name, monosodium glutamate Co., Ltd.)
[ evaluation ]
Each cosmetic was evaluated as follows.
The evaluation results are shown in tables 1 to 6 below.
1. Presence or absence of formation of gel shape
Whether or not the cosmetics of examples 1 to 8 and comparative examples 1 to 12 were in a gel shape was visually confirmed.
2. Evaluation of Functionality
The cosmetics of examples 1 to 8 and comparative examples 1 to 12 were evaluated for the moisturizing effect felt when applied to the face, the sliminess (immediately after application) and the moisturizing effect (immediately after application) after application to the skin.
Each of the cosmetics 55. mu.L of examples 1 to 8 and comparative examples 1 to 12 immediately after the preparation was administered to panelists 8 who evaluated the cosmetics, and they were allowed to judge the above-mentioned 3 points.
The panelist's perceptions were then scored on 5 scales. The scoring criteria are as follows.
-score criteria-
5: the persistence of moist, sticky, or moist feeling is strongly felt
4: feeling of moisture, stickiness, or persistence of moisture
3: little sense of moisture, stickiness, or persistence of a moisturizing sensation
2: hardly feel the persistence of moist, sticky, or moist feeling
1: no sense of moisture, stickiness, or persistence of moisture
The evaluation results were obtained by averaging the scores of the panelists and rounding off the 2 th decimal place.
3. Evaluation of ultraviolet-shielding ability
The cosmetics of example 1 and comparative examples 1 to 5 were evaluated for ultraviolet-shielding ability by the following method.
That is, the measurement sample was prepared by applying 32.5mg of the cosmetic composition of example 1 and comparative examples 1 to 5 to a polymethyl methacrylate plate (PMMA plate, HELIOPLATE HD6) in a uniform thickness by the in vitro measurement method of ISO 24443. In addition, 2 samples were prepared for each measurement sample.
The SPF value of the measurement sample was calculated by an SPF (sun Protection factor) analyzer (UV-2000S (trade name) manufactured by Labsphere). Further, the SPF value at 5 points (n ═ 5) was measured for each of the 2 samples, and the average value was determined.
The SPF value is "G1" when it is 20 or more, and "NG" when it is less than 20.
Figure BDA0000893833090000151
Figure BDA0000893833090000161
Figure BDA0000893833090000171
Figure BDA0000893833090000181
TABLE 5
Figure BDA0000893833090000191
TABLE 6
Figure BDA0000893833090000201
As shown in table 1, it was found that the oil-in-water type cosmetic of example 1 contained the organic ultraviolet absorber, the aqueous medium, the specific compound, the gelling agent, and the specific powder, had a gel-like shape, had ultraviolet-shielding ability, and was excellent in the persistence of moist, sticky, and moist feeling.
As shown in table 2, it was found that comparative examples 6 to 10 using known moisturizing agents other than the specific compound had poor persistence of the moist, sticky and moisturizing feeling compared with example 2.
As shown in table 3, it was found that the stickiness was suppressed in example 2 in which the value of n of the specific compound was 10 and example 4 in which the value of n of the specific compound was 20, compared to examples 3 and 5 in which the value of n was outside the range of 10 to 25.
As shown in table 4, it is understood that when the content of the specific compound is 5 mass% (example 2), the effect of keeping the moist feeling and suppressing the stickiness is more excellent, and when the content is 10 mass% or more (example 7), the effect is more excellent, as compared with example 6 in which the content of the specific compound is 2 mass%.
As shown in table 5, it was found that example 2 using an alkyl-modified carboxyvinyl polymer as a gelling agent was superior in the persistence of a moist feeling and the suppression of stickiness to the skin, compared to example 8 using a carboxyvinyl polymer.
As shown in table 6, it was found that even when polydimethylsiloxane diethylbenzylidene malonate (powder) was used as the organic ultraviolet absorber, the effect of suppressing the stickiness was inferior to that of example 2 in the case where the specific powder was not used (comparative example 12).

Claims (12)

1. A gel-like oil-in-water type cosmetic composition comprises an organic ultraviolet absorber, an aqueous medium, a polyoxyalkylene methyl glucoside represented by the following general formula (1), a gelling agent, and a powder containing a silicone resin in at least a part of the surface thereof,
the gelling agent is more than one selected from the group consisting of carboxyl vinyl polymer and acrylic ester/acrylic acid C10-30 alkyl ester cross-linked polymer;
the powder has a core-shell structure in which a coating layer containing a silicone resin is provided on the surface of a core containing a silicone rubber,
the total content of the aqueous medium is 55 wt% or more based on the total weight of the gel-like oil-in-water type cosmetic,
the content of the polyoxyalkylene methyl glucoside represented by the general formula (1) is 1-12% by mass relative to the total amount of the gel-like oil-in-water type cosmetic,
general formula (1) CH3C6H10O5(OC(R)H-CH2)nOH
In the general formula (1), R represents a hydrogen atom or a methyl group, and n representing the average addition mole number of ethylene oxide or propylene oxide is 5 to 50.
2. The gel-like oil-in-water type cosmetic preparation according to claim 1, wherein the organic ultraviolet absorber contains a silicone type ultraviolet absorber.
3. The gel-like oil-in-water type cosmetic according to claim 2, wherein the silicone-type ultraviolet absorber is polydimethylsiloxane diethylbenzylidene malonate.
4. The gel-like oil-in-water cosmetic according to claim 2, wherein the content of the silicone-type ultraviolet absorber is 0.05% by mass or more and 10% by mass or less with respect to the total amount of the gel-like oil-in-water cosmetic.
5. The gel-like oil-in-water type cosmetic material according to claim 1 or claim 2, wherein n in the general formula (1) represents an average molar number of addition of ethylene oxide or propylene oxide and is 10 to 25.
6. The gel-like oil-in-water type cosmetic according to claim 1 or claim 2, wherein the content of the polyoxyalkylene methyl glucoside represented by the general formula (1) is 2% by mass or more relative to the total amount of the gel-like oil-in-water type cosmetic.
7. The gel-like oil-in-water type cosmetic according to claim 1 or claim 2, wherein the content of the polyoxyalkylene methyl glucoside represented by the general formula (1) is 5% by mass or more relative to the total amount of the gel-like oil-in-water type cosmetic.
8. The gel-like oil-in-water type cosmetic according to claim 1 or claim 2, wherein the content of the polyoxyalkylene methyl glucoside represented by the general formula (1) is 10% by mass or less with respect to the total amount of the gel-like oil-in-water type cosmetic.
9. The gel-like oil-in-water type cosmetic according to claim 1 or claim 2, wherein the gelling agent is a polymer of 1 or more monomers selected from the group consisting of acrylic acid, methacrylic acid, and alkyl esters thereof.
10. The gel-like oil-in-water type cosmetic according to claim 1 or claim 2, wherein the gelling agent is an alkyl-modified carboxyvinyl polymer.
11. The gel-like oil-in-water type cosmetic according to claim 1 or claim 2, wherein the silicone resin in the powder is a vinyl polydimethylsiloxane/polymethylsiloxane silsesquioxane crosspolymer.
12. The gel-like oil-in-water type cosmetic according to claim 1 or claim 2, wherein the content of the powder is 0.1% by mass or more and 5% by mass or less with respect to the total amount of the gel-like oil-in-water type cosmetic.
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