WO2017203846A1 - 液状分散体及びその用途 - Google Patents
液状分散体及びその用途 Download PDFInfo
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- WO2017203846A1 WO2017203846A1 PCT/JP2017/014291 JP2017014291W WO2017203846A1 WO 2017203846 A1 WO2017203846 A1 WO 2017203846A1 JP 2017014291 W JP2017014291 W JP 2017014291W WO 2017203846 A1 WO2017203846 A1 WO 2017203846A1
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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
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0216—Solid or semisolid forms
- A61K8/022—Powders; Compacted Powders
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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
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/04—Dispersions; Emulsions
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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
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
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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
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/34—Alcohols
- A61K8/345—Alcohols containing more than one hydroxy group
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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
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/37—Esters of carboxylic acids
- A61K8/375—Esters of carboxylic acids the alcohol moiety containing more than one hydroxy group
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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
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/58—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing atoms other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur or phosphorus
- A61K8/585—Organosilicon compounds
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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
- A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
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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
- A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
- A61K8/893—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone modified by an alkoxy or aryloxy group, e.g. behenoxy dimethicone or stearoxy dimethicone
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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
- A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
- A61K8/894—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
- A61Q1/02—Preparations containing skin colorants, e.g. pigments
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/10—General cosmetic use
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
- A61K2800/30—Characterized by the absence of a particular group of ingredients
- A61K2800/31—Anhydrous
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/41—Particular ingredients further characterized by their size
- A61K2800/413—Nanosized, i.e. having sizes below 100 nm
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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
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/29—Titanium; Compounds thereof
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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
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/55—Phosphorus compounds
- A61K8/553—Phospholipids, e.g. lecithin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
- A61Q1/02—Preparations containing skin colorants, e.g. pigments
- A61Q1/10—Preparations containing skin colorants, e.g. pigments for eyes, e.g. eyeliner, mascara
Definitions
- the present invention relates to a liquid dispersion and its use. More specifically, the present invention relates to a liquid dispersion containing a hydrophobically treated inorganic powder, a cosmetic material using the same, and a cosmetic.
- Inorganic powders are used in various applications as colorants, fillers, and the like.
- pigment grade titanium oxide and iron oxide are suitably used as color pigments in cosmetics and paint applications.
- these inorganic powders are used in the state of a dispersion dispersed in a dispersion medium in order to promote beautiful color development (see, for example, Patent Document 1).
- the surface of inorganic powder is hydrophilic, in order to exhibit water resistance against moisture such as sweat and rain, a technique for forming a dispersion after surface treatment of inorganic powder has been developed (for example, patents). Reference 2-4).
- dispersion processing of inorganic powder in a dispersion medium requires equipment and personnel for the processing, so for example, it is disadvantageous in terms of cost for small-scale, multi-product applications, and advanced know-how is also available for dispersion processing. Cost. Therefore, if the raw material supplier can provide the inorganic powder in a liquid dispersion state, it is desirable because the dispersion process in the dispersion medium is simplified.
- inorganic powders, especially inorganic powders having a particle size larger than that of fine particles (for example, having a particle size of about 150 nm or more) are likely to settle in the dispersion medium, so that the dispersion stability is not good. There has been a problem that phase separation (coloring, etc.) has occurred, and it has been difficult to provide a stable liquid dispersion.
- Patent Document 1 describes an aqueous dispersion containing a pigment having a particle diameter of more than 100 nm measured by a laser particle size analyzer and polyvinylpyrrolidone.
- a pigment having a particle diameter of more than 100 nm measured by a laser particle size analyzer and polyvinylpyrrolidone has been room for improvement in order to further improve the dispersion stability of the pigment and to obtain a stable liquid dispersion.
- Patent Documents 2 to 4 describe dispersions in which fine inorganic particles subjected to organic surface treatment are dispersed in water. This dispersion has a good feel and handleability, and can give a cosmetic with high water repellency that is strong against sweat and water, and is particularly useful as a cosmetic raw material. However, since all of the inorganic powders used are fine particles, even when an inorganic powder having an average particle diameter of, for example, 150 nm or more is used, a more stable liquid dispersion can be obtained. There was room for ingenuity.
- the present invention has been made in view of the above-described present situation, can stably maintain a dispersed state for a long time, and is preferably applied to both O / W type cosmetics and W / O type cosmetics. It is an object to provide a liquid dispersion that can be used. Another object of the present invention is to provide a cosmetic raw material and a cosmetic using the liquid dispersion.
- a liquid dispersion containing a polyhydric alcohol, a nonionic surfactant, and a hydrophobically treated inorganic powder (referred to as a hydrophobically treated inorganic powder) has good color development, feel and handling. Focusing on the fact that it is possible to give a highly water-repellent cosmetic material that is strong against sweat and water, and through further intensive studies, this liquid dispersion shall be substantially free of water (ie, specifically, Even when using a hydrophobized inorganic powder having an average particle size of 150 nm or more, for example, the viscosity immediately after preparation of the liquid dispersion is appropriate.
- This liquid dispersion is useful as various raw materials because it can be easily stored and transported as a dispersion, and can simplify or omit the dispersion process when the liquid dispersion is dispersed in a dispersion medium. It is particularly useful as a raw material.
- This liquid dispersion can also be suitably applied to both O / W type cosmetics and W / O type cosmetics.
- the present invention is a liquid dispersion containing a polyhydric alcohol (A), a nonionic surfactant (B) and a hydrophobized inorganic powder (C), and water in 100% by mass of the liquid dispersion
- the amount of the liquid dispersion is 1% by mass or less.
- the liquid dispersion preferably further contains lecithin and / or hydrogenated lecithin (D).
- the mass ratio (A / B) between the polyhydric alcohol (A) and the nonionic surfactant (B) is preferably 70 to 95/30 to 5. Thereby, dispersion of the hydrophobized inorganic powder (C) is improved.
- the average particle size of the hydrophobized inorganic powder (C) is preferably 150 to 700 nm.
- inorganic powder having a particle size of such a pigment grade is likely to settle, and according to conventional common general knowledge, it is considered that the dispersion stability when a liquid dispersion is obtained is not good.
- the liquid dispersion of the present invention has a very good dispersion stability even when it contains a hydrophobized inorganic powder (C) having such a particle size. Particularly useful for applications.
- the hydrophobized inorganic powder (C) is an inorganic powder surface-treated with at least one selected from the group consisting of silicone, alkylsilane, fatty acid (salt), amino acid (salt), and alkylphosphoric acid (salt) It is preferable that it is a body. As a result, the hydrophilic part of the inorganic powder to be surface-treated is sufficiently blocked. For example, when blended in a cosmetic containing a water-soluble polymer, the gel of the inorganic powder (C) and the water-soluble polymer The formation is suppressed, the feeling of squeaking during use is sufficiently reduced, and the water resistance is improved.
- the polyhydric alcohol (A) is at least one selected from the group consisting of ethylene glycol, propylene glycol, dipropylene glycol, 1,3-butylene glycol, pentylene glycol, glycerin, diglycerin, triglycerin and polyglycerin. It is preferable that Thereby, the nonionic surfactant (B) can be uniformly oriented on the surface of the hydrophobized inorganic powder (C), and the liquid dispersion is further stabilized.
- the nonionic surfactant (B) is preferably a polyether-modified silicone. This further improves the stability of the liquid dispersion and the feeling of use when used in cosmetics. Polyether-modified silicones are also preferred because of their high safety and thermal stability.
- the liquid dispersion preferably has a viscosity of 2000 to 500,000 mPa ⁇ s at 25 ° C.
- the present invention is also a cosmetic raw material comprising the above liquid dispersion.
- the present invention is also a cosmetic comprising the above liquid dispersion.
- the liquid dispersion of the present invention can maintain a dispersion state stably for a long time. Therefore, the dispersion process in the dispersion medium can be simplified or omitted, which can contribute to the cost reduction required for the dispersion process.
- this liquid dispersion is particularly useful as a cosmetic raw material because it has good color development, feel, and handleability, and can provide a highly water-repellent cosmetic that is resistant to sweat and water. In particular, it can be suitably applied to both O / W type cosmetics and W / O type cosmetics.
- the liquid dispersion of the present invention contains a polyhydric alcohol (A), a nonionic surfactant (B), and a hydrophobized inorganic powder (C).
- the total content of these essential components is preferably 80% by mass or more with respect to 100% by mass of the total amount of the liquid dispersion. More preferably, it is 85 mass% or more, More preferably, it is 90 mass% or more, Most preferably, it is 95 mass% or more, Most preferably, it is 97 mass% or more.
- other components may be included, and each component may be used alone or in combination of two or more. Hereinafter, each component will be described.
- the polyhydric alcohol (A) is not particularly limited as long as it is a dihydric or higher alcohol, but is preferably a polyhydric alcohol having 1 to 20 carbon atoms, for example. More preferably, it is at least one selected from the group consisting of ethylene glycol, propylene glycol, dipropylene glycol, 1,3-butylene glycol, pentylene glycol, glycerin, diglycerin, triglycerin and polyglycerin.
- the nonionic surfactant (B) can be uniformly oriented on the surface of the hydrophobized inorganic powder (C), and the liquid dispersion is further stabilized.
- 1,3-butylene glycol is particularly preferred. In the case of 1,3-butylene glycol, when blended into a cosmetic, it is particularly preferable because of its high safety to the human body.
- the content of the polyhydric alcohol (A) is preferably 10% by mass or more with respect to 100% by mass of the total amount of the liquid dispersion. Thereby, the dispersion stability of a liquid dispersion improves more. More preferably, it is 15 mass% or more, More preferably, it is 20 mass% or more. Although an upper limit is not specifically limited, In order to heighten the effect by another component, it is preferable that it is 50 mass% or less. More preferably, it is 45 mass% or less, More preferably, it is 40 mass% or less.
- the nonionic surfactant (B) is not particularly limited as long as it is a compound usually used as a nonionic (nonionic) surfactant.
- a polyether or a derivative thereof a polyether alkyl ether, a poly Oxyalkylene alkenyl phenyl ether, polyether fatty acid ester, sorbitan fatty acid ester, polyether sorbitan fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, sucrose fatty acid ester, polyether castor oil, polyether hardened castor oil, polyether-modified silicone And polyglycerin-modified silicone.
- polyether fatty acid ester polyether sorbitan fatty acid ester and / or polyether-modified silicone. More preferably, at least a polyether-modified silicone is used, which further improves the stability of the liquid dispersion, the feeling of use when used in cosmetics, and the like. Polyether-modified silicones are also preferred because of their high safety and thermal stability.
- the nonionic surfactant (B) is also a compound that is transparently dissolved or turbid at 35 ° C. when mixed with 1,3-butylene glycol at a concentration of 20% by mass (the nonionic surfactant is at room temperature In the case of a paste or a solid, it is preferably heated and homogenized and then confirmed at 35 ° C.).
- the layer by a nonionic surfactant can be efficiently formed in the hydrophobic treatment inorganic powder (C) surface, the dispersion stability of a liquid dispersion improves more.
- transparent dissolution occurs when the above-described test is performed on the nonionic surfactant mixed in the liquid dispersion.
- the nonionic surfactant (B) is a compound which is insoluble or cloudy at 35 ° C. when mixed in water at a concentration of 20% by mass (in the case where the nonionic surfactant is a paste-solid at room temperature) It is also suitable that the temperature is made uniform after heating to 35 ° C.). Thereby, when mix
- two or more kinds of nonionic surfactants are used in combination, when the above-described test is performed on the nonionic surfactant mixed at the mixing ratio to be blended in the liquid dispersion, It is preferable to become cloudy.
- transparent dissolution means that the obtained mixed solution has a haze value of less than 10 at an optical path length of 10 mm at 35 ° C.
- lightly turbid means 35 of the obtained mixed solution. It means that the haze value at an optical path length of 10 mm at 0 ° C. is 10 or more and the total light transmittance is 30% or more.
- insoluble means a state in which undissolved material is generated even when mixed, or phase separation occurs after 1 hour even though it appears to be cloudy. This means that the obtained liquid mixture has a haze value of 10 or more at an optical path length of 10 mm at 35 ° C. and a total light transmittance of less than 30%.
- the HLB (hydrophilic lipophilic balance) of the nonionic surfactant (B) is preferably 6 to 12, for example. If the HLB is within this range, the dispersibility of the hydrophobized inorganic powder (C) is further increased, and even when this liquid dispersion is blended in an O / W type cosmetic (oil-in-water cosmetic), for example. Adsorption to the skin of the hydrophobized inorganic powder (C) is improved and water resistance is improved. In addition, when using 2 or more types of nonionic surfactant (B), it is preferable that HLB of the mixture exists in the said range.
- HLB W.W. C. It is calculated
- N HLB (E + P) / 5 (N HLB represents the HLB value.
- E represents the ratio (mass%) of the polyether part of the nonionic surfactant (B) to the whole molecule of the nonionic surfactant (B).
- P represents the ratio (mass%) of the polyhydric alcohol part of the nonionic surfactant (B) to the whole molecule of the nonionic surfactant (B).
- the content of the nonionic surfactant (B) is such that the mass ratio (A / B) between the polyhydric alcohol (A) and the nonionic surfactant (B) is 70 to 95/30 to 5. It is preferable to set to. Thereby, dispersion of the hydrophobized inorganic powder (C) is improved. Further, the liquid dispersion of the present invention can maintain good dispersion stability even if the amount of the nonionic surfactant (B) is small, so that the amount of the nonionic surfactant (B) is reduced. Thus, it is possible to improve the stability when using the liquid dispersion. From this viewpoint, the mass ratio (A / B) is more preferably 72 to 95/28 to 5, and further preferably 73 to 95/27 to 5.
- the hydrophobic treated inorganic powder (C) preferably has an average particle size of 150 to 700 nm.
- inorganic powder having a particle size of such a pigment grade is likely to settle, and according to conventional common general knowledge, it is considered that the dispersion stability when a liquid dispersion is obtained is not good.
- the liquid dispersion of the present invention has a very good dispersion stability even when it contains a hydrophobized inorganic powder (C) having such a particle size.
- the thickness is more preferably 180 nm or more, and further preferably 200 nm or more.
- the average particle diameter of the inorganic powder means that the particle diameters of 200 particles randomly selected by a scanning electron micrograph (SEM photograph) are measured, and the average of the primary particle diameters is calculated. Means the value measured by the method. The diameter of the smallest circumscribed circle is used to calculate the individual primary particle diameter.
- the shape of the hydrophobized inorganic powder (C) is not particularly limited, and for example, spherical (including substantially spherical), rod-like, needle-like, spindle-like, plate-like, hexagonal plate-like, needle-like aggregate, amorphous shape Etc.
- the shape can be observed with a scanning electron microscope or the like.
- the inorganic powder (also referred to as raw material inorganic powder) constituting the hydrophobized inorganic powder (C) is not particularly limited.
- titanium oxide, iron oxide, zinc oxide, cerium oxide, barium sulfate, calcium carbonate, silica examples thereof include aluminum hydroxide, alumina, boron nitride, talc, mica, kaolin and the like.
- titanium oxide, iron oxide, zinc oxide, cerium oxide, and composites thereof are preferable, and thus become more useful for cosmetic use. More preferably, titanium oxide and / or iron oxide is used. Further, for the purpose of toning and the like, titanium oxide and iron oxide may be mixed and used in an arbitrary amount.
- the raw inorganic powder may also be a composite powder whose surface is coated with another inorganic material.
- the composite powder is hydrophobized to be used as the hydrophobized inorganic powder (C).
- Other inorganic materials are not particularly limited, and examples thereof include zinc oxide, titanium oxide, cerium oxide, iron oxide, barium oxide, hydrous silicic acid, silica, aluminum hydroxide, alumina, and zirconia.
- the coating amount with these inorganic materials is preferably, for example, 0 to 25% by mass with respect to 100% by mass of the total amount of the inorganic powder after the hydrophobic treatment. More preferably, it is 2 to 20% by mass.
- the hydrophobized inorganic powder (C) is obtained by hydrophobizing raw material inorganic powder (which may be the above composite powder).
- the hydrophobic treatment means that the surface of the raw inorganic powder is treated with a hydrophobic organic surface treatment agent. Hydrophobic treatment blocks the hydrophilic part of the surface of the raw material inorganic powder to be treated, thus improving water resistance and water repellency. For example, when blended into cosmetics containing water-soluble polymers, it becomes hydrophobic. Gel formation between the treated inorganic powder (C) and the water-soluble polymer is suppressed, the feeling of squeaking during use is sufficiently reduced, and it becomes more useful for cosmetic applications.
- the hydrophobized inorganic powder (C) (that is, the hydrophobized inorganic powder) preferably has a high degree of hydrophobization. Thereby, the stability of the liquid dispersion can be further increased.
- the degree of hydrophobicity can be measured by the size of the contact angle of water droplets when 1 ⁇ L of water is dropped onto the surface by pressing the hydrophobized inorganic powder into a flat plate with a uniform surface,
- the contact angle is preferably 45 ° or more, more preferably 60 ° or more, and still more preferably 90 ° or more.
- the hydrophobic organic surface treatment agent is not particularly limited as long as it is an organic surface treatment agent usually used for the hydrophobic treatment of the particle surface, but silicone, alkylsilane, fatty acid (salt), amino acid (salt) and alkylphosphorus It is preferably at least one selected from the group consisting of acids (salts).
- the salt is not particularly limited, and for example, metal salts, ammonium salts, and organic amine salts are preferable.
- metal atoms constituting the metal salt include monovalent metals such as sodium, lithium, potassium, rubidium and cesium; divalent metals such as zinc, magnesium, calcium, strontium and barium; trivalent metals such as aluminum; iron And other metals such as titanium; and the like.
- organic amine group constituting the organic amine salt include alkanolamine groups such as monoethanolamine group, diethanolamine group and triethanolamine group; alkylamine groups such as monoethylamine group, diethylamine group and triethylamine group; ethylenediamine group, And polyamine groups such as a triethylenediamine group.
- ammonium salts, sodium salts, and potassium salts are preferable, and sodium salts are more preferable.
- silicone is preferable.
- examples of silicone include methyl hydrogen polysiloxane, dimethyl polysiloxane, a copolymer of methyl hydrogen polysiloxane and dimethyl polysiloxane, and a reactive trialkoxysilyl group-containing organopolysiloxane such as trimethoxysilyl group or triethoxysilyl group. Is preferred.
- the hydrophobic treatment of the inorganic powder is performed at a ratio of 0.1 to 10% by mass with respect to 100% by mass of the total amount of the inorganic powder after treatment (hydrophobized inorganic powder (C)). It is preferred that When the content is 0.1% by mass or more, water repellency and water resistance are further improved. In addition, even if it exceeds 10 mass%, the effect of the hydrophobization treatment reaches a peak. More preferably, it is 0.2 to 9% by mass, and still more preferably 0.5 to 8% by mass.
- the content of the hydrophobized inorganic powder (C) is preferably 40% by mass or more with respect to 100% by mass of the total amount of the liquid dispersion. By using such a high concentration, when using a liquid dispersion as various raw materials, a necessary effect can be exhibited with a small amount. More preferably, it is 50 mass% or more, More preferably, it is 55 mass% or more, Most preferably, it is 60 mass% or more. Among these, when titanium oxide is used as the inorganic powder, it is more preferably 60% by mass or more, particularly preferably 65% by mass or more, and most preferably 70% by mass or more. Although an upper limit is not specifically limited, When content of another component is considered, it is preferable that it is 95 mass% or less, More preferably, it is 90 mass% or less.
- the liquid dispersion of the present invention is substantially free of water. “Substantially free of water” means that the water content in 100% by mass of the liquid dispersion is 1% by mass or less. In the present invention, it is possible to stably maintain a dispersed state for a long time even in a state that substantially does not contain water. It can be suitably applied to both type cosmetics and W / O type cosmetics.
- the water content in 100% by mass of the liquid dispersion is preferably less than 1% by mass, more preferably 0.8% by mass or less, still more preferably 0.5% by mass or less, and particularly preferably 0.3% by mass or less. Preferably it is 0.2 mass% or less.
- the moisture in the liquid dispersion includes not only water as one of the raw material components but also impurities (for example, water as an impurity in each raw material component). That is, the amount of water in the liquid dispersion is calculated by adding the amount of water added and charged, and the amount of water previously contained in each raw material component. The amount of water in each raw material component is measured by the Karl Fischer titration method as described in the examples described later.
- the liquid dispersion of the present invention preferably further contains lecithin and / or hydrogenated lecithin (D).
- lecithin and / or hydrogenated lecithin D
- the adhesion of the hydrophobized inorganic powder (C) to the skin is improved, and the longevity of the makeup is improved.
- Lecithin and / or hydrogenated lecithin may be collectively referred to as “(hydrogenated) lecithin”.
- the content of lecithin and / or hydrogenated lecithin (D) (the total amount when two types are used) is 0.01 to 10 parts by mass with respect to 100 parts by mass of the total amount of the hydrophobized inorganic powder (C). A proportion is preferred. If the amount is less than 0.01 part by mass, improvement in adhesion cannot be expected so much, and if it exceeds 10 parts by mass, problems such as stickiness may occur. More preferred is 0.1 to 8 parts by mass, still more preferred is 0.5 to 5 parts by mass, and particularly preferred is 0.5 to 3 parts by mass.
- the liquid dispersion of the present invention comprises the above-described polyhydric alcohol (A), nonionic surfactant (B), hydrophobized inorganic powder (C), and lecithin and / or hydrogenated.
- Other components other than lecithin (D) may be included.
- Other components are not particularly limited, for example, paraoxybenzoic acid alkyl ester, benzoic acid, sodium benzoate, sorbic acid, potassium sorbate, phenoxyethanol, salicylic acid, coalic acid, sorbic acid, parachlorometacresol, hexachlorophene, chloride
- antiseptic and antibacterial agents such as benzalkonium, chlorhexidine chloride, photosensitizer and phenoxyethanol.
- the content of other components is preferably 20% by mass or less with respect to 100% by mass of the total amount of the liquid dispersion, for example. More preferably, it is 15 mass% or less, More preferably, it is 10 mass% or less, Most preferably, it is 5 mass% or less.
- the mixing method is not limited, and a normal method that can be uniformly dispersed may be employed.
- a disperser / equipment such as a bead mill, jet mill, or high-pressure homogenizer may be used, but the liquid dispersion of the present invention can be easily produced with a simple agitator without using these expensive dispersers / equipment. Therefore, there is an advantage that an expensive disperser such as a bead mill is not necessary.
- the liquid dispersion of the present invention preferably has a viscosity at 25 ° C. of 2000 to 500,000 mPa ⁇ s.
- the viscosity is within this range, the hydrophobized inorganic powder (C) is more difficult to move (that is, less likely to settle), and thus the dispersion stability is further improved.
- the average particle diameter of the hydrophobized inorganic powder (C) is 150 nm or more, this effect becomes remarkable, the viscosity increase with time is more sufficiently suppressed, and the dispersion stability is improved.
- the upper limit of the viscosity is more preferably 300,000 mPa ⁇ s or less, still more preferably 100,000 mPa ⁇ s or less, and particularly preferably 50,000 mPa ⁇ s or less.
- the lower limit of the viscosity is more preferably 3000 mPa ⁇ s or more, further preferably 5000 mPa ⁇ s or more, particularly preferably 7000 mPa ⁇ s or more, and most preferably 8000 mPa ⁇ s or more.
- viscosity at 25 ° C. means polyhydric alcohol (A), nonionic surfactant (B), hydrophobized inorganic powder (C), and lecithin and / or hydrogenated lecithin ( D) Viscosity of the liquid dispersion when it contains no components other than D). This liquid dispersion was prepared, allowed to stand at 40 ° C. for 1 day, then cooled to 25 ° C., and a B-type viscometer (LVDV1M, Hidehiro) (Measured temperature: 25 ° C.).
- the liquid dispersion of the present invention can maintain a dispersion state stably for a long time, it can be easily stored and transported as a dispersion, and can also be subjected to a dispersion treatment when the liquid dispersion is dispersed in a dispersion medium. It can be simplified or omitted. Therefore, it is useful as various raw materials, and is particularly useful as a cosmetic raw material, a paint raw material, and an ink raw material. Among them, the liquid dispersion of the present invention is very useful as a cosmetic raw material because it has good color development, feel, and handleability, and can give a cosmetic with high water repellency and resistance to sweat and water.
- the cosmetic raw material which consists of a liquid dispersion of this invention is one of this invention.
- cosmetics, coating compositions or ink compositions containing the liquid dispersion of the present invention are also included in the invention by the present inventors. Of these, the cosmetic will be further described below.
- the cosmetic of the present invention contains the liquid dispersion of the present invention described above.
- the manufacturing method of such cosmetics is not specifically limited, What is necessary is just to follow the manufacturing method of normal cosmetics.
- the cosmetic is not particularly limited, and examples thereof include skin care products, hair products, makeup products, and UV protection products.
- the shape of the cosmetic is not particularly limited, and examples thereof include liquid, emulsion, cream, solid, paste, gel, multilayer, mousse, and spray.
- the cosmetic may be any of oily cosmetics, aqueous cosmetics, O / W type cosmetics (oil-in-water cosmetics), and W / O type cosmetics (water-in-oil cosmetics). That is, the liquid dispersion of the present invention can be suitably applied to any of these. Especially, it can apply especially preferably to both O / W type cosmetics and W / O type cosmetics.
- O / W type cosmetic a cosmetic used in combination with an anionic water-soluble polymer is preferable. In this case, by using the liquid dispersion of the present invention, it is used in combination with an anionic water-soluble polymer. However, viscosity reduction and gelation do not occur and water resistance is improved.
- the pigment adheres to the skin by water evaporation after the cosmetic is applied to the skin.
- lecithin, hydrogenated lecithin or the like the adhesion to the skin is remarkably improved.
- the cosmetic may contain one or more arbitrary aqueous components and oily components that are usually used in the cosmetic field.
- oil agent for example, oil agent, surfactant, moisturizer, higher alcohol, sequestering agent, natural or synthetic polymer, water-soluble or oil-soluble polymer, ultraviolet shielding agent, various Extracts, drug components, colorants (dyes, pigments, etc.), preservatives, antioxidants, pigments, thickeners, pH adjusters, fragrances, cooling agents, antiperspirants, bactericides, skin activators, various Examples thereof include powders.
- Particle size distribution A liquid dispersion containing white inorganic powder was diluted with water, and the median diameter D 50 was measured with "LA-950" manufactured by Horiba.
- Grind gauge The liquid dispersion containing colored inorganic powder was measured with a 50 ⁇ m grind gauge according to JIS K5600 (1999).
- Example 1 In a metal beaker, 1,3-butylene glycol (manufactured by Daicel), a nonionic surfactant (“KF-6013”, polyether-modified silicone, manufactured by Shin-Etsu Chemical Co., Ltd.), titanium oxide ( ⁇ “MKR-1S” manufactured by Chemical Industry Co., Ltd., titanium oxide 98.5%, hydrogen dimethicone 1.5%, average particle size: 200 nm) were added in this order. Each was mixed with a gold spatula and mixed with a stirrer. The above-described evaluation was performed on the liquid dispersion thus obtained. The results are shown in Table 1.
- Example 2 A liquid dispersion was prepared in the same manner as in Example 1 except that the amount of each raw material component was changed to the amount shown in Table 1, and the above-described evaluation was performed. The results are shown in Table 1.
- Example 3 A liquid dispersion was prepared in the same manner as in Example 1 except that the average particle diameter of titanium oxide was changed to 500 nm, and the above-described evaluation was performed. The results are shown in Table 1.
- Example 5 shows that titanium oxide was changed to iron oxide (red) (“SI-Red R-516PS LHC” manufactured by Miyoshi Kasei Co., Ltd., hydrogen dimethicone treatment, average particle size: 700 nm), and the amount of each raw material component. A liquid dispersion was produced in the same manner as in Example 1 except that the amount was changed, and the above-described evaluation was performed. The results are shown in Table 1.
- Example 6 Table 1 shows that titanium oxide was changed to iron oxide (black) (“SI-Black BL-100P LHC” manufactured by Miyoshi Kasei Co., Ltd., hydrogen dimethicone treatment, average particle size: 300 nm), and the amount of each raw material component. A liquid dispersion was produced in the same manner as in Example 1 except that the amount was changed, and the above-described evaluation was performed. The results are shown in Table 1.
- Example 7 In a metal beaker, 1,3-butylene glycol (manufactured by Daicel), a nonionic surfactant (“KF-6013”, polyether-modified silicone, manufactured by Shin-Etsu Chemical Co., Ltd.), lecithin (J- “Lecithin CL” manufactured by Oil Mills), titanium oxide (“MKR-1S” manufactured by Sakai Chemical Industry Co., Ltd., titanium oxide 98.5%, hydrogen dimethicone 1.5%, average particle size: 200 nm) were added in this order. Each was mixed with a gold spatula and mixed with a stirrer. The above-described evaluation was performed on the liquid dispersion thus obtained. The results are shown in Table 1.
- Example 8 Titanium oxide (MKR-1S manufactured by Sakai Chemical Industry Co., Ltd.), titanium oxide 98.5%, hydrogen dimethicone 1.5%, average particle size: 200 nm, 60.1 g, iron oxide (yellow) (“SI- Yellow LL-100P LHC ", hydrogen dimethicone treatment, average particle size: 700 nm) 2.6 g, iron oxide (black) (" SI-Black BL-100P LHC "manufactured by Miyoshi Chemical Co., Ltd.), hydrogen dimethicone treatment, average particle size: 300 nm ) 0.7 g, iron oxide (red) (“MI-Kasei Co., Ltd.“ SI-Red R-516PS LHC ”, hydrogen dimethicone treatment, average particle size: 700 nm) is mixed with 7.8 g, and the hydrophobizing treatment is toned to the skin color.
- iron oxide (yellow) (“SI- Yellow LL-100P LHC ", hydrogen dimethicone
- An inorganic powder was obtained.
- 1,3-butylene glycol manufactured by Daicel
- a nonionic surfactant (“KF-6013”, manufactured by Shin-Etsu Chemical Co., Ltd., polyether-modified silicone) in the amounts shown in Table 1 and toning the above skin color Hydrophobized inorganic powders were added in this order.
- KF-6013 manufactured by Shin-Etsu Chemical Co., Ltd., polyether-modified silicone
- Comparative Example 1 An attempt was made to prepare a liquid dispersion in the same manner as in Example 1 except that the nonionic surfactant was not used and the amount of each raw material component was changed to the amount shown in Table 1. There wasn't. Therefore, a liquid dispersion could not be obtained.
- the amount of water in 100% by mass of each raw material component measured by the Karl Fischer titration method described above is as follows. Titanium oxide having an average particle size of 200 nm: 0.126% by mass Titanium oxide with an average particle diameter of 500 nm: 0.103 mass% Iron oxide (red): 0.130% by mass Iron oxide (yellow): 0.487% by mass Iron oxide (black): 0.061% by mass 1,3-butylene glycol: 0.262% by mass Nonionic surfactant (KF-6013): 0.272% by mass Lecithin: 0.186% by mass
- Examples 1 to 6 and 8 are liquid dispersions containing a polyhydric alcohol (A), a nonionic surfactant (B) and a hydrophobized inorganic powder (C).
- Example 7 further includes lecithin and This is an example of a liquid dispersion containing hydrogenated lecithin (D), and the water content in 100% by mass of the liquid dispersion is 1% by mass or less. In this case, the viscosity is stable over time. Thus, a liquid dispersion in which the generation of supernatant and caking was suppressed was obtained.
- the median diameter D 50 is also small, and the dispersion of the hydrophobized inorganic powder (C) is good.
- Example 4 to 6 and 8 when coarse particles are confirmed by a grind gauge, Coarse grains were not confirmed.
- the liquid dispersions obtained in Examples 1 to 8 are not only used for O / W type cosmetics (oil-in-water cosmetics) but also for W / O type cosmetics (water-in-oil cosmetics). It was possible to blend stably.
- Comparative Example 1 is an example in which any one of the nonionic surfactants (B) was not used, but in this case, it was not dispersed and a liquid dispersion could not be obtained.
- Comparative Example 2 is an example containing water as a raw material component. In this case, it is separated when blended in a W / O type cosmetic (water-in-oil cosmetic) and left at 50 ° C. for one week. However, the stability was poor and the liquid dispersion obtained in Comparative Example 2 was a fluid liquid at the beginning, but was in a state (solidified) remarkably inferior in fluidity after one week.
- Example 9 (O / W foundation) Using the components shown in Table 2 below, an O / W foundation was obtained by the following production method.
- Production method (1) Ingredients 15-18 are mixed evenly with part of ingredient 19. (2) Components 1 to 7 are uniformly mixed and heated. (3) The components 8 to 14 and the remainder of the component 19 are uniformly mixed and heated. (4) The above (2) was added to the above (3) to emulsify, and after cooling, the above (1) was added to obtain an O / W foundation.
- the O / W foundation of Example 9 obtained as described above is stable without causing a change with time, and also with respect to the feeling of use, it spreads smoothly on the skin at the time of application, and the sticky feeling of the back skin. It was an O / W foundation with no makeup and no makeup.
- Example 10 (O / W foundation) Using the components shown in Table 3 below, an O / W foundation was obtained by the following production method. (Production method) (1) Ingredients 16-19 are mixed evenly with part of ingredient 20. (2) Components 1 to 8 are uniformly mixed and heated. (3) The components 9 to 15 and the remainder of the component 20 are mixed uniformly and heated. (4) The above (2) was added to the above (3) to emulsify, and after cooling, the above (1) was added to obtain an O / W foundation.
- the O / W foundation of Example 10 obtained as described above is stable without causing a change with time, and also with respect to the feeling of use, it spreads smoothly on the skin at the time of application, and the sticky feeling of the back skin. It was an O / W foundation with no makeup and a UV protection effect and excellent makeup.
- Example 11 (O / W foundation) Using the components shown in Table 4 below, an O / W foundation was obtained by the following production method. (Production method) (1) Ingredients 11-14 are mixed evenly with part of ingredient 17. (2) Components 1 to 6 are mixed uniformly and heated. (3) The components 7 to 10 and the remainder of the component 17 are mixed uniformly and heated. (4) The above (2) was added to the above (3) to emulsify, and the components 15, 16 and (1) were added after cooling to obtain an O / W foundation.
- the O / W foundation of Example 11 obtained as described above was stable without causing a change with time, and also with respect to the feeling of use, the spread to the skin at the time of application was good and smooth, and the stickiness of the back skin In addition, the O / W foundation was excellent in long-lasting makeup and had a high UV-blocking effect.
- Example 12 (W / O foundation) Using the components shown in Table 5 below, a W / O foundation was obtained by the following production method. (Production method) (1) Components 8 to 11 are uniformly mixed with a part of component 15. (2) Components 1 to 7 are mixed uniformly. (3) The components 12 to 14 and the remainder of the component 15 are mixed uniformly, and the above (1) is added. (4) The above (3) was added to the above (2) and emulsified to obtain a W / O foundation.
- the W / O foundation of Example 12 obtained as described above is stable without causing a change with time, and also with respect to the feeling of use, the spread to the skin at the time of application is good, and it is smooth and has a good stop. It was a W / O foundation with no stickiness and squeakiness and excellent makeup lasting.
- Example 13 (W / O foundation) Using the components shown in Table 6 below, a W / O foundation was obtained by the following production method. (Production method) (1) Components 6 to 9 are mixed evenly with a part of component 15. (2) Components 1 to 5 are mixed uniformly. (3) The components 10 to 14 and the remainder of the component 15 are mixed uniformly, and the above (1) is added. (4) The above (3) was added to the above (2) and emulsified to obtain a W / O foundation.
- the W / O foundation of Example 13 obtained as described above was stable without causing a change with time, and also with respect to the feeling of use, the spread to the skin at the time of application was good and the skin was smooth and stopped. It was a W / O foundation with no stickiness or squeakiness and very excellent makeup.
- Example 14 O / W mascara was obtained by the following production method.
- Production method (1) The component 10 is uniformly mixed with a part of the component 11. (2) The components 2 to 4 and the remainder of the component 11 are mixed. (3) Component 5 is added to the above (2), and further component 6 is added. (4) Add components 7 and 8 to (3) above and heat uniformly. (5) The heated component 1 is added to the above (4) and emulsified. (6) Component 9 and (1) above were added to (5) above to obtain a uniform O / W mascara.
- the O / W mascara of Example 14 obtained as described above is stable without causing a change with time, and also has a smooth and non-sticky appearance with respect to the feeling of use. It was an O / W mascara with excellent durability.
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Abstract
Description
本発明は更に、上記液状分散体を含む化粧料でもある。
本発明の液状分散体は、多価アルコール(A)、非イオン性界面活性剤(B)及び疎水化処理無機粉体(C)を含む。これら必須成分の合計含有量は、液状分散体の総量100質量%に対し、80質量%以上であることが好ましい。より好ましくは85質量%以上、更に好ましくは90質量%以上、特に好ましくは95質量%以上、最も好ましくは97質量%以上である。なお、必要に応じて、その他の成分を含んでもよく、各含有成分はそれぞれ1種又は2種以上を使用することができる。
以下、各含有成分について説明する。
多価アルコール(A)は、2価以上のアルコールであれば特に限定されないが、例えば、炭素数1~20の多価アルコールであることが好ましい。より好ましくは、エチレングリコール、プロピレングリコール、ジプロピレングリコール、1,3-ブチレングリコール、ペンチレングリコール、グリセリン、ジグリセリン、トリグリセリン及びポリグリセリンからなる群より選択される少なくとも1種である。これにより、非イオン性界面活性剤(B)が疎水化処理無機粉体(C)の表面により均一に配向でき、液状分散体がより一層安定する。中でも特に1,3-ブチレングリコールを用いることが好ましい。1,3-ブチレングリコールの場合、化粧料へ配合した場合、人体への安全性が高い点で特に好ましい。
非イオン性界面活性剤(B)は、非イオン性(ノニオン性)の界面活性剤として通常使用される化合物であれば特に限定されず、例えば、ポリエーテル又はその誘導体、ポリエーテルアルキルエーテル、ポリオキシアルキレンアルケニルフェニルエーテル、ポリエーテル脂肪酸エステル、ソルビタン脂肪酸エステル、ポリエーテルソルビタン脂肪酸エステル、グリセリン脂肪酸エステル、ポリグリセリン脂肪酸エステル、ショ糖脂肪酸エステル、ポリエーテルヒマシ油、ポリエーテル硬化ヒマシ油、ポリエーテル変性シリコーン、ポリグリセリン変性シリコーン等が挙げられる。中でも、ポリエーテル脂肪酸エステル、ポリエーテルソルビタン脂肪酸エステル及び/又はポリエーテル変性シリコーンを用いることが好ましい。より好ましくは、ポリエーテル変性シリコーンを少なくとも用いることであり、これにより、液状分散体の安定性や化粧料に使用した際の使用感等が更に良好になる。ポリエーテル変性シリコーンはまた、安全性や熱安定性が高い点でも好適である。
なお、2種以上の非イオン性界面活性剤を組み合わせて使用する場合は、液状分散体中に配合する混合比で混合した非イオン性界面活性剤について上述した試験を行った場合に、透明溶解又は微濁することが好適である。
なお、2種以上の非イオン性界面活性剤を組み合わせて使用する場合は、液状分散体中に配合する混合比で混合した非イオン性界面活性剤について上述した試験を行った場合に、不溶又は白濁することが好適である。
なお、非イオン性界面活性剤(B)を2種以上用いる場合は、その混合物のHLBが上記範囲内にあることが好ましい。
NHLB=(E+P)/5
(NHLBは、HLB値を表す。Eは、非イオン性界面活性剤(B)の分子全体に対する、非イオン性界面活性剤(B)が有するポリエーテル部の割合(質量%)を表す。Pは、非イオン性界面活性剤(B)の分子全体に対する、非イオン性界面活性剤(B)が有する多価アルコール部の割合(質量%)を表す。)
疎水化処理無機粉体(C)は、平均粒子径が150~700nmであることが好ましい。通常、このような顔料級とされる粒径を持つ無機粉体は沈降しやすいため、従来の技術常識によると、液状分散体としたときの分散安定性は良好ではないと考えられている。だがこの技術常識に反し、本発明の液状分散体では、このような粒径を持つ疎水化処理無機粉体(C)を含む場合であっても極めて良好な分散安定性を有するため、着色顔料用途に特に有用である。より綺麗な発色を奏させる観点から、より好ましくは180nm以上、更に好ましくは200nm以上である。
形状は、走査型電子顕微鏡等によって観察することができる。
本発明の液状分散体は、水を実質的に含まない。「水を実質的に含まない」とは、液状分散体100質量%中の水分量が1質量%以下であることを意味する。本発明では、このように水を実質的に含まない状態でも長時間安定して分散状態を維持することができるという、これまでの技術常識からは想定できない異質な効果を有するうえ、O/W型化粧料及びW/O型化粧料のいずれにも好適に適用することができる。液状分散体100質量%中の水分量は、好ましくは1質量%未満、より好ましくは0.8質量%以下、更に好ましくは0.5質量%以下、特に好ましくは0.3質量%以下、最も好ましくは0.2質量%以下である。
本発明の液状分散体は、更に、レシチン及び/又は水添レシチン(D)を含むことが好ましい。レシチン及び/又は水添レシチン(D)を含有することで、疎水化処理無機粉体(C)の肌への付着性が向上し、化粧持ちが向上する。
なお、レシチン及び/又は水添レシチンを「(水添)レシチン」と総称することもある。
本発明の液状分散体は、必要に応じて、上述した多価アルコール(A)、非イオン性界面活性剤(B)、疎水化処理無機粉体(C)、並びに、レシチン及び/又は水添レシチン(D)以外のその他の成分を含んでもよい。その他の成分としては特に限定されないが、例えば、パラオキシ安息香酸アルキルエステル、安息香酸、安息香酸ナトリウム、ソルビン酸、ソルビン酸カリウム、フェノキシエタノール、サリチル酸、石炭酸、ソルビン酸、パラクロルメタクレゾール、ヘキサクロロフェン、塩化ベンザルコニウム、塩化クロルヘキシジン、感光素、フェノキシエタノール等の防菌防腐剤や抗菌剤等が挙げられる。
本発明の液状分散体は、長時間安定して分散状態を維持することができるため、分散体として保管や輸送が容易であるうえ、当該液状分散体を分散媒に分散する際の分散処理を簡略化又は省略することができる。それゆえ、各種原料として有用であり、化粧料原料、塗料原料、インキ原料として特に有用である。中でも、本発明の液状分散体は発色や感触、取扱い性が良好で、汗や水に強い撥水性の高い化粧料を与えることができるため、化粧料原料として極めて有用である。このように本発明の液状分散体からなる化粧料原料は、本発明の一つである。また本発明の液状分散体を含む化粧料、塗料組成物又はインキ組成物も、本発明者による発明に包含される。このうち化粧料について以下に更に説明する。
本発明の化粧料は、上述した本発明の液状分散体を含む。このような化粧料の製造方法は特に限定されず、通常の化粧料の製法に従えばよい。
なお、各種物性等は以下のようにして評価した。
(1)無機粉体中の水分量
滴定セルにメタノールを入れ、水分気化装置(平沼産業社製「EVAPORATER EV-2000」)にセットし、ブランク操作を行ってから試料0.5gを投入した。加熱保持時間10分で水分測定装置(平沼産業社製「AQUA COUNTER AQV-2200」)を用いて水分量を測定した。
(2)油(無機粉体以外の原料)中の水分量
滴定セルにメタノールを入れ、ブランク操作をしてから試料0.5gを投入し、水分測定装置(平沼産業社製「AQUA COUNTER AQV-2200」)で水分量を測定した。
液状分散体を作製後、40℃で1日又は1週間静置した後、25℃まで冷却し、B型粘度計(LVDV1M、英弘精機社製)にて測定した(測定温度:25℃)。
液状分散体を作製後、40℃で静置し、1週間後に目視で確認した。
表では、ケーキング又は上澄みが発生したものを「発生」と記載し、発生しなかったものを「なし」と記載した。
(1)粒度分布
白色の無機粉体を含む液状分散体について、水で希釈後、堀場製作所製「LA-950」にてメディアン径D50を測定した。
(2)グラインドゲージ
有色の無機粉体を含む液状分散体について、JIS K5600(1999年)に従い、50μmグラインドゲージにより測定した。
金属ビーカーに、表1に示す量で1,3-ブチレングリコール(ダイセル社製)、非イオン性界面活性剤(信越化学工業社製「KF-6013」、ポリエーテル変性シリコーン)、酸化チタン(堺化学工業社製「MKR-1S」、酸化チタン98.5%、ハイドロゲンジメチコン1.5%、平均粒子径:200nm)の順で投入した。それぞれ投入時に、金ベラを用いて馴染ませ、撹拌機で混合した。このようにして得た液状分散体について、上述した評価を行った。結果を表1に示す。
各原料成分の量を表1に示す量に変更したこと以外は、実施例1と同様にして液状分散体を作製し、上述した評価を行った。結果を表1に示す。
酸化チタンの平均粒子径を500nmに変更したこと以外は、実施例1と同様にして液状分散体を作製し、上述した評価を行った。結果を表1に示す。
酸化チタンを酸化鉄(黄色)(三好化成社製「SI-イエロー LL-100P LHC」、ハイドロゲンジメチコン処理、平均粒子径:700nm)に変更したこと、及び、各原料成分の量を表1に示す量に変更したこと以外は、実施例1と同様にして液状分散体を作製し、上述した評価を行った。結果を表1に示す。
酸化チタンを酸化鉄(赤色)(三好化成社製「SI-レッド R-516PS LHC」、ハイドロゲンジメチコン処理、平均粒子径:700nm)に変更したこと、及び、各原料成分の量を表1に示す量に変更したこと以外は、実施例1と同様にして液状分散体を作製し、上述した評価を行った。結果を表1に示す。
酸化チタンを酸化鉄(黒色)(三好化成社製「SI-ブラック BL-100P LHC」、ハイドロゲンジメチコン処理、平均粒子径:300nm)に変更したこと、及び、各原料成分の量を表1に示す量に変更したこと以外は、実施例1と同様にして液状分散体を作製し、上述した評価を行った。結果を表1に示す。
金属ビーカーに、表1に示す量で1,3-ブチレングリコール(ダイセル社製)、非イオン性界面活性剤(信越化学工業社製「KF-6013」、ポリエーテル変性シリコーン)、レシチン(J-オイルミルズ製「レシチンCL」)、酸化チタン(堺化学工業社製「MKR-1S」、酸化チタン98.5%、ハイドロゲンジメチコン1.5%、平均粒子径:200nm)の順で投入した。それぞれ投入時に、金ベラを用いて馴染ませ、撹拌機で混合した。このようにして得た液状分散体について、上述した評価を行った。結果を表1に示す。
酸化チタン(堺化学工業社製MKR-1S」、酸化チタン98.5%、ハイドロゲンジメチコン1.5%、平均粒子径:200nm)60.1g、酸化鉄(黄色)(三好化成社製「SI-イエロー LL-100P LHC」、ハイドロゲンジメチコン処理、平均粒子径:700nm)2.6g、酸化鉄(黒色)(三好化成社製「SI-ブラック BL-100P LHC」、ハイドロゲンジメチコン処理、平均粒子径:300nm)0.7g、酸化鉄(赤色)(三好化成社製「SI-レッド R-516PS LHC」、ハイドロゲンジメチコン処理、平均粒子径:700nm)7.8gを混合し、肌色に調色した疎水化処理無機粉体を得た。
金属ビーカーに、表1に示す量で1,3-ブチレングリコール(ダイセル社製)、非イオン性界面活性剤(信越化学工業社製「KF-6013」、ポリエーテル変性シリコーン)上記肌色に調色した疎水化処理無機粉体の順で投入した。それぞれ投入時に、金ベラを用い馴染ませ、撹拌機で混合した。このようにして得た液状分散体について、上述した評価を行った。結果を表1に示す。
非イオン性界面活性剤を使用しなかったこと及び各原料成分の量を表1に示す量に変更したこと以外は、実施例1と同様にして液状分散体を作製しようとしたが、分散しなかった。それゆえ、液状分散体を得ることができなかった。
金属ビーカーに、表1に示す量で1,3-ブチレングリコール(ダイセル社製)、非イオン性界面活性剤(信越化学工業社製「KF-6013」、ポリエーテル変性シリコーン)、酸化チタン(堺化学工業社製「MKR-1S」、酸化チタン98.5%、ハイドロゲンジメチコン1.5%、平均粒子径:200nm)、水の順で投入した。それぞれ投入時に、金ベラを用いて手で馴染ませた。このようにして得た液状分散体について、上述した評価を行った。結果を表1に示す。
平均粒子径200nmの酸化チタン:0.126質量%
平均粒子径500nmの酸化チタン:0.103質量%
酸化鉄(赤色):0.130質量%
酸化鉄(黄色):0.487質量%
酸化鉄(黒色):0.061質量%
1,3-ブチレングリコール:0.262質量%
非イオン性界面活性剤(KF-6013):0.272質量%
レシチン:0.186質量%
実施例1~6、8は、多価アルコール(A)、非イオン性界面活性剤(B)及び疎水化処理無機粉体(C)を含む液状分散体であり、実施例7は更にレシチン及び/又は水添レシチン(D)を含む液状分散体であって、かつ液状分散体100質量%中の水分量が1質量%以下である例であるが、この場合、粘度が経時的に安定しており、上澄みやケーキングの発生も抑制された液状分散体が得られた。実施例1~3、7ではメディアン径D50も小さく、疎水化処理無機粉体(C)の分散が良好であり、実施例4~6、8ではグラインドゲージによる粗粒確認を行った場合にも粗粒は確認されなかった。
また、実施例1~8で得た液状分散体はいずれも、O/W型化粧料(水中油型化粧料)のみならず、W/O型化粧料(油中水型化粧料)にも安定に配合することができた。
実施例9(O/Wファンデーション)
下記表2に示す成分を用い、以下の製造方法にてO/Wファンデーションを得た。
(製造方法)
(1)成分15~18を成分19の一部に均一に混合する。
(2)成分1~7を均一に混合し、加熱する。
(3)成分8~14及び成分19の残部を均一に混合し、加熱する。
(4)上記(3)に上記(2)を添加して乳化し、冷却して上記(1)を添加し、O/Wファンデーションを得た。
下記表3に示す成分を用い、以下の製造方法にてO/Wファンデーションを得た。
(製造方法)
(1)成分16~19を成分20の一部に均一に混合する。
(2)成分1~8を均一に混合し、加熱する。
(3)成分9~15及び成分20の残部を均一に混合し、加熱する。
(4)上記(3)に上記(2)を添加して乳化し、冷却して上記(1)を添加し、O/Wファンデーションを得た。
下記表4に示す成分を用い、以下の製造方法にてO/Wファンデーションを得た。
(製造方法)
(1)成分11~14を成分17の一部に均一に混合する。
(2)成分1~6を均一に混合し、加熱する。
(3)成分7~10及び成分17の残部を均一に混合し、加熱する。
(4)上記(3)に上記(2)を添加して乳化し、冷却して成分15、16及び上記(1)を添加し、O/Wファンデーションを得た。
下記表5に示す成分を用い、以下の製造方法にてW/Oファンデーションを得た。
(製造方法)
(1)成分8~11を成分15の一部に均一に混合する。
(2)成分1~7を均一に混合する。
(3)成分12~14及び成分15の残部を均一に混合し、上記(1)を添加する。
(4)上記(2)に上記(3)を添加して乳化し、W/Oファンデーションを得た。
下記表6に示す成分を用い、以下の製造方法にてW/Oファンデーションを得た。
(製造方法)
(1)成分6~9を成分15の一部に均一に混合する。
(2)成分1~5を均一に混合する。
(3)成分10~14及び成分15の残部を均一に混合し、上記(1)を添加する。
(4)上記(2)に上記(3)を添加して乳化し、W/Oファンデーションを得た。
下記表7に示す成分を用い、以下の製造方法にてO/Wマスカラを得た。
(製造方法)
(1)成分10を成分11の一部に均一に混合する。
(2)成分2~4及び成分11の残部を混合する。
(3)上記(2)に成分5を加え、更に成分6を添加する。
(4)上記(3)に成分7,8を加え、均一して加熱する。
(5)上記(4)に加熱した成分1を加えて乳化する。
(6)上記(5)に成分9及び上記(1)を加え、均一にしてO/Wマスカラを得た。
Claims (10)
- 多価アルコール(A)、非イオン性界面活性剤(B)及び疎水化処理無機粉体(C)を含む液状分散体であって、
該液状分散体100質量%中の水分量は1質量%以下である
ことを特徴とする液状分散体。 - 更に、レシチン及び/又は水添レシチン(D)を含む
ことを特徴とする請求項1記載の液状分散体。 - 前記多価アルコール(A)と非イオン性界面活性剤(B)との質量比(A/B)は、70~95/30~5である
ことを特徴とする請求項1又は2に記載の液状分散体。 - 前記疎水化処理無機粉体(C)の平均粒子径は、150~700nmである
ことを特徴とする請求項1~3のいずれかに記載の液状分散体。 - 前記疎水化処理無機粉体(C)は、シリコーン、アルキルシラン、脂肪酸(塩)、アミノ酸(塩)及びアルキルリン酸(塩)からなる群より選択される少なくとも1種で表面処理された無機粉体である
ことを特徴とする請求項1~4のいずれかに記載の液状分散体。 - 前記多価アルコール(A)は、エチレングリコール、プロピレングリコール、ジプロピレングリコール、1,3-ブチレングリコール、ペンチレングリコール、グリセリン、ジグリセリン、トリグリセリン及びポリグリセリンからなる群より選択される少なくとも1種である
ことを特徴とする請求項1~5のいずれかに記載の液状分散体。 - 前記非イオン性界面活性剤(B)は、ポリエーテル変性シリコーンである
ことを特徴とする請求項1~6のいずれかに記載の液状分散体。 - 25℃での粘度が2000~50万mPa・sである
ことを特徴とする請求項1~7のいずれかに記載の液状分散体。 - 請求項1~8のいずれかに記載の液状分散体からなる
ことを特徴とする化粧料原料。 - 請求項1~8のいずれかに記載の液状分散体を含む
ことを特徴とする化粧料。
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