WO2014185249A1 - 紫外線散乱剤を含有する樹脂粉体及びその製造方法並びに化粧料 - Google Patents
紫外線散乱剤を含有する樹脂粉体及びその製造方法並びに化粧料 Download PDFInfo
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- WO2014185249A1 WO2014185249A1 PCT/JP2014/061596 JP2014061596W WO2014185249A1 WO 2014185249 A1 WO2014185249 A1 WO 2014185249A1 JP 2014061596 W JP2014061596 W JP 2014061596W WO 2014185249 A1 WO2014185249 A1 WO 2014185249A1
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- resin
- resin powder
- particles
- ultraviolet scattering
- scattering agent
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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
- A61K8/27—Zinc; Compounds thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- 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
- A61K8/0241—Containing particulates characterized by their shape and/or structure
- A61K8/0254—Platelets; Flakes
-
- 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
- A61K8/0241—Containing particulates characterized by their shape and/or structure
- A61K8/0283—Matrix particles
-
- 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
-
- 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
- A61K8/88—Polyamides
-
- 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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- 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
- A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns
-
- 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
- A61K2800/74—Biological properties of particular ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
Definitions
- the present invention relates to a resin powder containing an ultraviolet scattering agent (or an ultraviolet ray preventing agent), a method for producing the same, and a cosmetic containing the resin powder.
- UV scattering agents such as titanium oxide and zinc oxide as additives in cosmetics.
- Such UV scattering agents are considered to have a higher UV scattering effect as the particle size is smaller, and those used in cosmetics are generally of nano-order particle size.
- the nano-order products are not yet fully verified for their harmfulness when they come into contact with the skin.
- the fields are different, the fact that the development of lung cancer by asbestos, a nanowhisker, has become a major social problem, is not too much attention to the effects of these fine particles on the human body. This is a recent trend.
- zinc oxide when it is incorporated in a lot of cosmetics, there is a demerit that zinc ions cause pseudo-crosslinking of cosmetic additives and increase the viscosity of the cosmetics.
- JP 2013-56860 A discloses a skin cosmetic containing zinc oxide and titanium oxide as ultraviolet ray preventing components, wherein the zinc oxide is a thermoplastic resin, Skin cosmetics are disclosed that are contained as composite particles encapsulated in a matrix component selected from thermoplastic elastomers and rubbers.
- the matrix component since zinc oxide is included in the matrix component, it is possible to prevent zinc oxide from directly touching the skin, and even nanoparticles can be improved in terms of safety to the human body. .
- the ultraviolet scattering function tends to be lowered.
- the composite particles of this document are spherical and are likely to have a form close to agglomeration.
- JP 2013-56860 A (Claims, Examples)
- an object of the present invention is to provide a resin powder having an ultraviolet scattering function, a method for producing the same, and a cosmetic containing the resin powder.
- Another object of the present invention is to provide a resin powder capable of efficiently exhibiting an ultraviolet scattering function even when an ultraviolet scattering agent is contained (or included) in the resin, a method for producing the same, and a cosmetic containing the resin powder. There is to do.
- Still another object of the present invention is to provide a resin powder capable of achieving both high safety to the human body and an excellent ultraviolet scattering function, a method for producing the same, and a cosmetic containing the resin powder.
- the present inventors have made a plate-like treatment (for example, crushing) a resin (particularly thermoplastic resin) composition (particularly a particulate resin composition) containing an ultraviolet scattering agent. Surprisingly, it was found that the ultraviolet scattering function can be improved or improved, and the present invention has been completed.
- the resin powder of the present invention is a resin powder containing an ultraviolet scattering agent [a resin powder containing an ultraviolet scattering agent and a resin (a resin as a binder or a matrix)], and the shape thereof is a plate ( This is a flat plate-like resin powder.
- the resin constituting the resin powder may be a thermoplastic resin (for example, a polyamide resin).
- the ultraviolet scattering agent may be, for example, an inorganic compound (for example, a metal oxide).
- the ultraviolet scattering agent may be in the form of particles (for example, metal oxide particles).
- Such a particulate ultraviolet scattering agent may be, for example, particles having an average particle diameter of 150 nm or less.
- Typical ultraviolet scattering agents include metal oxide particles having an average particle diameter of 100 nm or less, and at least one metal oxide particle selected from titanium oxide particles and zinc oxide particles.
- the ratio of the ultraviolet scattering agent may be, for example, about 5 to 300 parts by weight with respect to 100 parts by weight of the resin constituting the resin powder.
- the average thickness (average thickness determined from an electron micrograph) of the resin powder of the present invention may be 2 ⁇ m or less, for example.
- the resin powder of the present invention may be a powder (or a resin particle plate) obtained by plate-forming (for example, crushing) resin particles containing an ultraviolet scattering agent.
- the average particle diameter of the resin particles may be about 0.5 to 100 ⁇ m.
- the resin powder of the present invention may be a resin powder (cosmetic resin powder) for use in cosmetics (or cosmetics).
- the present invention includes a method for producing a resin powder (plate-like resin powder) by subjecting a resin powder containing an ultraviolet scattering agent to a plate-like treatment.
- the present invention also includes cosmetics (or cosmetics) containing the resin powder (plate-like resin powder).
- the resin powder of the present invention has an ultraviolet scattering function.
- the ultraviolet scattering function can be efficiently exhibited even though the ultraviolet scattering agent is contained (or included) in the resin (or not exposed). Therefore, even if the amount of the ultraviolet scattering agent is small, a sufficient ultraviolet scattering function can be obtained, which is preferable.
- the ultraviolet scattering agent is contained in the resin, direct contact of the ultraviolet scattering agent with the skin can be prevented or suppressed. Moreover, as described above, the ultraviolet scattering agent is excellent in the ultraviolet scattering function despite being contained or dispersed in such a resin. Therefore, the resin powder of the present invention can achieve both high safety for the human body and an excellent ultraviolet scattering function, and is extremely practical and useful.
- FIG. 1 is an electron micrograph of a plate-like powder (a plate-like resin powder containing titanium oxide particles) obtained in Example 1.
- FIG. 2 is an electron micrograph of particles (powder) before being plate-formed in Example 1.
- FIG. 3 is an electron micrograph of the plate-like powder (plate-like resin powder containing zinc oxide particles) obtained in Example 2.
- 4 is an electron micrograph of particles (powder) before being plate-formed in Example 2.
- the resin powder of the present invention contains an ultraviolet scattering agent (ultraviolet ray preventing agent).
- the resin powder of the present invention is a resin powder containing an ultraviolet scattering agent and a resin. And this resin powder has plate shape so that it may mention later.
- the resin powder of the present invention is composed of a resin. That is, the resin powder of the present invention uses a resin as a matrix (or binder) and contains an ultraviolet scattering agent (or an ultraviolet scattering agent is dispersed) in the matrix (or binder).
- the resin is not particularly limited, and may be any of a thermoplastic resin and a thermosetting resin (such as an epoxy resin, a silicone resin, and an unsaturated polyester resin).
- the resin may be at least composed of a thermoplastic resin. Good.
- thermoplastic resin examples include polyamide resin ⁇ eg, aliphatic polyamide [eg, polyamide 6, polyamide 66, polyamide 610, polyamide 612, polyamide 912, polyamide 1212, polyamide 1012, polyamide 1010, polyamide 11, polyamide 12, Polyamide (for example, copolyamide obtained by copolymerizing the above exemplified polyamide components such as polyamide 66/11, polyamide 66/12, etc.), alicyclic polyamide, aromatic polyamide, etc. ⁇ , polyester resin ⁇ for example, aliphatic polyester resin (Eg, polylactic acid), aromatic polyester resin [polyalkylene arylate (eg, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, poly (1,4-cyclohexene) Dimethylene terephthalate), polyarylate, liquid crystal polyester, etc.], polycarbonate resin (for example, aromatic polycarbonate such as bisphenol A type polycarbonate), polyphenylene ether resin (polypheny
- These resins may be used alone or in combination of two or more.
- the resin may be a water-soluble resin, but may usually be a hydrophobic resin.
- thermoplastic resins are preferable, and polyamide resins may be particularly preferably used.
- the polyamide resin is suitable because it has a relatively high affinity for the ultraviolet light scattering agent and is likely to be efficiently formed into a plate by a plate forming process described later.
- aliphatic polyamides are widely used, have excellent moldability, solvent resistance, etc., and are easily plate-like, so that aliphatic homo- or copolyamides having C 8-16 alkylene chains (particularly polyamide 11 and polyamide 12) Of these, aliphatic homo or copolyamides having a C 10-14 alkylene chain are particularly preferred.
- the resin powder of the present invention may contain other additives or contact with other additives (for example, when used for cosmetics as described later). It is also preferable in that it is difficult to be affected by other additives and easily maintains the ultraviolet scattering function.
- the number average molecular weight of the resin is not particularly limited and can be selected according to the type of resin.
- the resin in gel permeation chromatography (GPC), it may be 3000 or more (for example, 5000 to 1000000), preferably 8000 or more (for example, 10,000 to 500000), more preferably 15000 or more (for example, 20000 to 200000).
- the melting point (or softening point) is not particularly limited.
- the melting point (or softening point) of a thermoplastic resin is 300 ° C. or lower (for example, 50 ⁇ 280 ° C.), preferably about 80 to 250 ° C. (for example, 100 to 220 ° C.).
- the ultraviolet scattering agent (ultraviolet ray preventing agent) is not particularly limited as long as it is an additive having an ultraviolet scattering function, and may be either an organic substance or an inorganic substance, but is usually an inorganic substance (especially an inorganic compound). Good.
- the ultraviolet scattering agent examples include oxides (for example, metal oxides containing at least a Group 4 metal of the periodic table as a metal component (for example, metal oxides such as titanium oxide and zirconium oxide), zinc oxide and the like), sulfides (For example, metal sulfides such as zinc sulfide), carbonates (for example, calcium carbonate, barium carbonate, etc.), sulfates (for example, barium sulfate, etc.), and the like. These ultraviolet scattering agents may be used alone or in combination of two or more. Note that the ultraviolet scattering agent may have a function as a filler or a colorant.
- oxides for example, metal oxides containing at least a Group 4 metal of the periodic table as a metal component (for example, metal oxides such as titanium oxide and zirconium oxide), zinc oxide and the like), sulfides (For example, metal sulfides such as zinc sulfide), carbonates (for example, calcium carbonate, barium carbonate
- metal oxides are preferable, and titanium oxide and zinc oxide are particularly preferable.
- titanium oxide examples include titanium monoxide (TiO), titanium dioxide (TiO 2 ), dititanium trioxide (Ti 2 O 3 ), and titanium dioxide is particularly preferable. In the present invention, different titanium oxides may be combined.
- the crystal form (crystal form) of titanium oxide may be any of rutile, anatase, and brookite.
- rutile type titanium oxide may be suitably used.
- An ultraviolet scattering agent for example, a metal oxide such as titanium oxide
- a surface treatment agent for example, a metal oxide such as titanium oxide
- the surface treatment can suppress the reactivity (or activity) of titanium oxide or the like, improve the dispersibility with respect to the resin, and more easily function as an ultraviolet scattering agent.
- the surface treatment agent examples include metal oxides (for example, silica, alumina, etc.), organic surface treatment agents (for example, coupling agents (for example, silane coupling agents, titanium coupling agents, etc.), organic acids, alcohols, and siloxanes. Compound, etc.]. These surface treatment agents may be used alone or in combination of two or more.
- a metal oxide different from the metal oxide constituting the ultraviolet scattering agent is selected as the metal oxide as the surface treatment agent.
- titanium oxide In this case, a non-titanium metal oxide is used as the surface treatment agent.
- the surface treatment agent may be composed of at least a metal oxide (such as silica).
- the ratio of the surface treatment agent is, for example, 30% by weight or less (for example, 0. 1 to 25% by weight), preferably 20% by weight or less (eg 0.5 to 18% by weight), more preferably about 15% by weight or less (eg 1 to 12% by weight). It may be about 20% by weight (for example, 2 to 15% by weight, preferably 3 to 10% by weight).
- the shape of the ultraviolet scattering agent is not particularly limited, and may be particulate (including spherical), fibrous (or needle or rod), plate, or the like. A preferred shape is particulate.
- the average particle diameter is, for example, 1 to 1000 nm (for example, It can be selected from the range of about 2 to 800 nm, and may be about 3 to 500 nm, preferably about 5 to 400 nm (eg, 7 to 350 nm), and more preferably about 10 to 300 nm (eg, 15 to 250 nm).
- the average particle size of the particulate ultraviolet scattering agent is 200 nm or less (eg, 1 to 180 nm), preferably 150 nm or less (eg, 5 to 120 nm), more preferably 100 nm or less (eg, 10 to 80 nm), particularly It may be 50 nm or less (for example, 20 to 50 nm).
- the UV scattering agent having a small particle diameter since it is safe for the human body even if such a UV scattering agent having a small particle diameter is used, it is safe for the human body while achieving both relatively high transparency and high UV scattering properties. Is preferable.
- the average particle diameter of the ultraviolet scattering agent can be measured by a conventional method, and may be measured by the same method as the average diameter of the resin powder described later.
- the ultraviolet scattering agent may be compatible (or compatible) with the resin, but may usually be incompatible with the resin.
- the proportion of the ultraviolet light scattering agent can be appropriately selected depending on the application and the desired degree of ultraviolet light scattering function.
- 1 to 1000 parts by weight (100 to 100 parts by weight of resin)
- it can be selected from the range of about 3 to 500 parts by weight), 5 to 300 parts by weight, preferably 10 to 250 parts by weight (for example, 20 to 220 parts by weight), more preferably 30 to 200 parts by weight (for example, 40 parts by weight).
- the volume ratio of the ultraviolet scattering agent is, for example, 0.1 to 50% by volume (for example, 0.5 to 45 volume) with respect to the total volume of the resin and the ultraviolet scattering agent. %), Preferably 1 to 40% by volume (eg 1.5 to 35% by volume), more preferably about 2 to 30% by volume (eg 3 to 25% by volume), usually 3 to 50%. It may be on the order of volume% (for example, 5 to 45 volume%, preferably 8 to 40 volume%, more preferably 10 to 35 volume%).
- the resin powder of the present invention may contain other additives (additives other than ultraviolet scattering agents) as necessary.
- additives can be appropriately selected depending on the application, for example, stabilizers (such as ultraviolet absorbers), fillers, colorants, dispersants, emulsifiers, fragrances, preservatives, antioxidants, Medicinal ingredients, bulking agents, antifoaming agents, humectants, lubricants and the like can be mentioned. These additives may be used alone or in combination of two or more.
- ultraviolet absorber examples include aminobenzoic acid (eg, p-aminobenzoic acid) or an ester thereof, salicylic acid ester, cinnamic acid ester (eg, benzyl cinnamate, 2-ethylhexyl methoxycinnamate), dialkylaminohydroxy, etc.
- aminobenzoic acid eg, p-aminobenzoic acid
- salicylic acid ester eg, cinnamic acid ester (eg, benzyl cinnamate, 2-ethylhexyl methoxycinnamate), dialkylaminohydroxy, etc.
- cinnamic acid ester eg, benzyl cinnamate, 2-ethylhexyl methoxycinnamate
- dialkylaminohydroxy etc.
- Benzoyl benzoate eg, diethylaminohydroxybenzoyl hexyl benzoate
- benzophenone compounds eg, 2-hydroxy-4-methoxybenzophenone
- dibenzoylalkanes eg, 4-tert-butyl-4-methoxydibenzoyl) Methane
- triazine derivatives for example, 2,4-bis ⁇ [4- (2-ethylhexyloxy) -2-hydroxy] -phenyl ⁇ -6- (4-methoxyphenyl) -1,3,5-triazine
- Urocanic acid or An ester thereof organic compounds such as ⁇ - carotene and the like.
- An ultraviolet absorber may be individual or may combine 2 or more types.
- the filler may be either an inorganic filler or an organic filler. Further, the shape of the filler may be any of particulate, fiber, and needle. Specific fillers include carbonates (calcium carbonate, magnesium carbonate, etc.), sulfates (calcium sulfate, barium sulfate, etc.), phosphates (calcium phosphate, titanium phosphate, etc.), metal oxides (silica, alumina, Iron oxide, magnesium oxide, strontium oxide, cerium oxide, etc.), hydroxyapatite, silicate (mica, calcium silicate, wollastonite, bentonite, zeolite, barley stone, talc, montmorillonite, clay, kaolin, etc.), minerals ( Quartz powder, diatomaceous earth, nepheline sianite, cristobalite, dolomite, etc.), metal nitride (silicon nitride, boron nitride, aluminum nitride,
- the colorant may be inorganic or organic. Further, the colorant may be a dye or a pigment (and further a dye / pigment). Specific colorants include, for example, inorganic colorants (or inorganic pigments such as carbon black, ultramarine blue, red pepper, black iron oxide, yellow iron oxide, chromium oxide, composite oxide pigments), and organic colorants.
- the colorant also includes tar pigments (for example, cosmetic tar pigments stipulated by the Ordinance of the Ministry of Health, Labor and Welfare), lake pigments (such as aluminum lakes), and the like.
- the colorants may be used alone or in combination of two or more.
- the shape of the resin powder of the present invention is a plate shape (flat plate shape).
- the average thickness (average thickness of the plate-like primary particles) is, for example, 3 ⁇ m or less (for example, 0.05 to 2.5 ⁇ m), preferably 2 ⁇ m or less (for example, 0.2 mm). 1 to 1.8 ⁇ m), more preferably 1.5 ⁇ m or less (for example, 0.15 to 1.3 ⁇ m), particularly 1.2 ⁇ m or less (for example, 0.2 to 1.2 ⁇ m).
- Such average thickness is not particularly limited, but can be determined from, for example, an electron micrograph. Specifically, any thickness (maximum, for example, 10 or more (for example, 15 to 100, preferably 20 to 50)) of resin powder extracted (sampled) from an electron micrograph is obtained. Thickness) can be measured, and the average value of these thicknesses can be defined as the average thickness.
- the average diameter of the resin powder [average value of the length in the plane direction (or direction perpendicular to the thickness direction) of the plate-like primary particles] can be selected from the range of 2 to 700 ⁇ m (for example, 5 to 600 ⁇ m). It may be about 10 to 500 ⁇ m, preferably 15 to 200 ⁇ m, more preferably about 20 to 150 ⁇ m.
- Such an average diameter is not particularly limited, but can be obtained from an electron micrograph in the same manner as the average thickness. Specifically, for any of a plurality of resin powders extracted (sampled) from an electron micrograph, each diameter or length (maximum diameter or maximum length or major axis) is measured, and these diameters or lengths are measured.
- the average value can be an average diameter (or average length).
- the diameter and distribution of the resin powder can be obtained (measured) by a light scattering (dynamic light scattering) method.
- the diameter of the resin powder by the light scattering method is, for example, 0.01 to 700 ⁇ m (for example, 0.05 to 600 ⁇ m), preferably 0.1 to 500 ⁇ m (for example, 0.2 to 400 ⁇ m). ), More preferably about 0.3 to 300 ⁇ m (for example, 0.5 to 200 ⁇ m).
- the ratio of the diameter at which the maximum frequency (frequency is maximum) of the resin powder by the light scattering method is, for example, 3 to 30%, preferably 5 to 25%, and more preferably 7 to 20% (for example, 10 to 15%).
- the resin powder of the present invention includes a plurality of resin particles (or resin particles) including (or encapsulating), in particular, an ultraviolet scattering agent (and other additives as exemplified above if necessary).
- resin particles may be a powder (aggregate of plate-like particles) obtained by plate-like treatment.
- resin particles each resin particle, single resin particle
- the plurality of plate-like resin particles may be aggregated (or laminated), but usually the cohesive force is weak and can be easily separated during synthesis or use. There are many.
- the method for producing the resin powder (plate-shaped resin powder) of the present invention is not particularly limited.
- a resin powder containing an ultraviolet scattering agent a resin powder not formed into a plate, simply a resin powder
- B a method of pulverizing (or crushing) a film (or a sheet or film-like material) formed of a resin containing an ultraviolet scattering agent.
- the method (A) can be particularly preferably used. In the method (A), it is not necessary to form a film, and it is easy to efficiently obtain a powder having a relatively small variation in size (thickness and particle size).
- the resin powder containing the ultraviolet scattering agent may be a powder obtained by pulverizing (for example, freeze pulverizing) a resin composition (pellet-shaped resin composition) containing the ultraviolet scattering agent.
- resin particles containing an ultraviolet scattering agent may be preferably used.
- resin particles for such resin particles, commercially available products may be used, and those produced by utilizing or applying known methods can be used.
- Known methods include, for example, a resin as a matrix, an ultraviolet scattering agent (and other additives), an incompatible with the matrix (and the ultraviolet scattering agent), and easy with a medium such as water.
- a third component for example, sugar, polyethylene glycol, etc.
- a third component that can be removed is kneaded to obtain a composition containing resin particles containing an ultraviolet scattering agent and the third component, and the third component is removed from the composition. Examples thereof include a method (forced emulsification method) (for example, a method described in JP 2010-132911 A).
- the shape of the resin particles is not particularly limited, and may be spherical or ellipsoidal, but may be particularly spherical (particularly true spherical).
- the average particle diameter of the resin particles can be selected from a range of about 0.1 to 500 ⁇ m, for example, 0.2 to 300 ⁇ m (for example, 0.3 to 200 ⁇ m), preferably 0. It may be about 5 to 100 ⁇ m (for example, 1 to 70 ⁇ m), more preferably 2 to 50 ⁇ m (for example, 3 to 40 ⁇ m), and usually about 4 to 30 ⁇ m.
- the average particle diameter of the resin particles may be 50 ⁇ m or less, preferably 30 ⁇ m or less, more preferably 20 ⁇ m or less, and particularly preferably 15 ⁇ m or less. When resin particles having such a particle size are used, it is easy to form a plate efficiently.
- the plate-forming treatment method is not particularly limited, and examples thereof include a method of crushing resin powder (particularly resin particles).
- the resin powder particularly, resin particles such as aliphatic polyamide resin
- various apparatuses or means a plate forming apparatus or a plate forming means
- Such devices or means include mills (media dispersers), rolls [rolling rolls (two rolls, three rolls, etc.)], medialess dispersers [for example, high-pressure collision dispersers (nanomizer, optimizer, etc.) ), An ultrasonic disperser, etc.].
- the mill is relatively easy to use and easy to use.
- the mill can be roughly classified into a so-called wet medium mill in which a medium such as a liquid is interposed and a dry medium mill in which a liquid is not interposed, and any of them can be used in the present invention.
- Examples of the wet media mill include a ball mill, a side grinder, a dyno mill, a spike mill, a DCP mill, a basket mill, and a paint conditioner.
- Examples of the dry medium mill include a ball mill, a vibration ball mill, an attritor, and a dry bead mill.
- Examples of the material of the container used in the medium mill include hardened steel, stainless steel, SUS chrome plating, alumina ceramics, silicon nitride ceramics, zirconia ceramics, silicon carbide ceramics, zirconia reinforced alumina ceramics, and sialon. In particular, it is not limited to these.
- the medium particles used in the medium mill spherical particles are generally used, and the materials thereof are glass beads, low alkali glass beads, alkali-free glass beads, alumina beads, zirconia beads, zirconia. Examples include yttria beads, titania beads, high-purity alumina beads, and steel balls.
- the specific gravity of the medium particles (beads) may be, for example, 2.0 or more, preferably 2.5 or more, and more preferably 3.0 or more.
- the size of the medium particles (beads) can be appropriately selected according to the size of the resin particles to be subjected to the plate-like treatment, and is, for example, about 0.05 to 5 mm (for example, 0.1 to 3 mm). May be.
- water can be mainly used as the medium (liquid), but water and an aqueous solvent [or a water-soluble solvent, for example, alcohols (alkanols such as methanol, ethanol, isopropyl alcohol; Diols such as 1,2-pentanediol and 1,2-hexanediol), diol monoethers (for example, alkylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether and propylene glycol monobutyl ether; diethylene glycol monoethyl ether, tri A mixed solvent with a polyalkylene glycol monoalkyl ether such as ethylene glycol monobutyl ether)] may be used.
- a water-soluble solvent for example, alcohols (alkanols such as methanol, ethanol, isopropyl alcohol; Diols such as 1,2-pentanediol and 1,2-hexanediol), diol monoethers (for example, alky
- the resin powder (plate-like resin powder) of the present invention can be used for various applications that require an ultraviolet scattering function, and in particular, can be suitably used for cosmetics (or cosmetics).
- the present invention includes cosmetics (or cosmetics) containing the resin powder.
- cosmetics especially skin cosmetics
- Such cosmetics need only contain at least resin powder, and other known cosmetic ingredients (for example, oils, alcohols, thickeners, etc., as well as other additives described above) Etc.).
- additives may be contained in the resin powder, or may be contained in the cosmetic separately from the resin powder.
- Cosmetics can be liquid (lotions, emulsions, creams, gels, etc.), semi-solids (creams, gels, kneads, etc.), solids (granular, powdery, molded products formed into desired shapes, etc.) Or any other shape.
- the powder adhering to the filter paper was randomly sampled at three locations with a spatula, placed on the observation table, and the sample on the observation table was vapor-deposited with gold.
- magnification was appropriately selected.
- Titanium oxide particles [Titanium dioxide, manufactured by DuPont, Ti-Pure (R) Titanium Dioxide Pigment-Paint Coatings-DryGrades R-105, surface treatment (silica, alumina dimethylsiloxane treatment) product] 50 parts by weight, polyamide resin (polyamide 12 , Manufactured by Daicel-Evonik Co., Ltd.) and in the same manner as in Example 1 of JP-A-2005-179646, polyamide particles containing titanium oxide particles (true sphere, average particle diameter of 4.1 ⁇ m, oxidized) The proportion of titanium particles was 50% by weight).
- the obtained particles were dispersed in water at a ratio of 10% by weight and crushed using a ball mill to form a plate.
- high purity alumina beads particles (particle size 0.5 mm) were used as the media type of the ball mill used at this time, and the volume of the dispersion and the media was the same.
- FIG. 2 shows an electron micrograph (1500 times) of the obtained plate-like powder.
- FIG. 2 also shows an electron micrograph (1500 times) of the polyamide particles themselves including the titanium oxide particles (polyamide particles before plate-like treatment). As is clear from these photographs, each polyamide particle was plate-like.
- the average thickness of the plate-like powder was 0.94 ⁇ m, the average diameter was 32 ⁇ m, the diameter distribution was 7 to 110 ⁇ m, the maximum frequency was 26 ⁇ m, and the ratio of the maximum frequency was 12%. .
- the obtained plate-like powder was dispersed in ethanol at a ratio of 5% by weight, and the obtained dispersion was applied onto the preparation glass with a bar coater.
- UV ultraviolet ray
- Example 2 In Example 1, instead of titanium oxide, 50 parts by weight of zinc oxide particles (average particle size 20 nm, manufactured by Sakai Chemical Industry Co., Ltd., “FINEX-50S-LP2”, surface treatment (organopolysiloxane) product) are used. Except that, polyamide particles containing zinc oxide particles (true spherical shape, average particle diameter 4.5 ⁇ m, ratio of zinc oxide particles 50% by weight) were obtained in the same manner as Example 1.
- FIG. 3 shows an electron micrograph (1500 times) of the obtained plate-like powder.
- FIG. 4 also shows an electron micrograph (1500 times) of polyamide particles containing zinc oxide particles themselves (polyamide particles before plate-like treatment). As is clear from these photographs, each polyamide particle was plate-like.
- the average thickness of the plate-like powder was 1.00 ⁇ m, the average diameter was 25 ⁇ m, the diameter distribution was 5 to 215 ⁇ m, the maximum frequency was 12 ⁇ m, and the ratio of the maximum frequency was 13%. .
- UV transmittance was measured in the same manner as in Example 1, it was 0% at 300 nm, 4% at 330 nm, 6% at 360 nm, and 15% at 400 nm.
- the polyamide particles containing zinc oxide also have a plate-like treatment, whereby the UV transmittance is remarkably lowered and the ultraviolet ray preventing function is greatly improved.
- Example 3 In Example 1, except that the polyamide resin was changed from 50 parts by weight to 40 parts by weight, the same procedure as in Example 1 was carried out to prepare polyamide particles containing titanium oxide particles (spherical, average particle diameter 4.5 ⁇ m, titanium oxide). The proportion of particles was 55% by weight).
- the obtained particles were formed into a plate shape in the same manner as in Example 1.
- the average thickness of the plate-like powder was 1.1 ⁇ m, and the average diameter was 29 ⁇ m.
- UV transmittance was measured in the same manner as in Example 1, it was 28% at 300 nm, 28% at 330 nm, 28% at 360 nm, and 29% at 400 nm.
- Example 4 Polyamide particles containing titanium oxide particles in the same manner as in Example 1, except that the titanium oxide particles were changed from 50 parts by weight to 60 parts by weight and the polyamide resin was changed from 50 parts by weight to 40 parts by weight. (True sphere, average particle diameter 5.7 ⁇ m, titanium oxide particle ratio 60 wt%).
- the obtained particles were formed into a plate shape in the same manner as in Example 1.
- the average thickness of the plate-like powder was 1.1 ⁇ m, and the average diameter was 24 ⁇ m.
- UV transmittance was measured in the same manner as in Example 1, it was 28% at 300 nm, 27% at 330 nm, 28% at 360 nm, and 26% at 400 nm.
- Example 5 In Example 2, except that the polyamide resin was changed from 50 parts by weight to 40 parts by weight, in the same manner as in Example 2, polyamide particles containing zinc oxide particles (true spherical shape, average particle diameter 4.7 ⁇ m, zinc oxide) The proportion of particles was 55% by weight).
- the obtained particles were formed into a plate shape in the same manner as in Example 1.
- the average thickness of the plate-like powder was 1.0 ⁇ m, and the average diameter was 33 ⁇ m.
- UV transmittance was measured in the same manner as in Example 1, it was 0% at 300 nm, 4% at 330 nm, 6% at 360 nm, and 11% at 400 nm.
- Example 6 Polyamide particles containing zinc oxide particles in the same manner as in Example 1, except that the zinc oxide particles were changed from 50 parts by weight to 60 parts by weight and the polyamide resin was changed from 50 parts by weight to 40 parts by weight. (True sphere, average particle diameter 6.7 ⁇ m, ratio of zinc oxide particles 60% by weight) was obtained.
- the obtained particles were formed into a plate shape in the same manner as in Example 1.
- the average thickness of the plate-like powder was 1.0 ⁇ m, and the average diameter was 31 ⁇ m.
- UV transmittance was measured in the same manner as in Example 1, it was 0% at 300 nm, 2% at 330 nm, 4% at 360 nm, and 10% at 400 nm.
- the resin powder of the present invention has an ultraviolet scattering function and can be used for various applications that require such an ultraviolet scattering function.
- such resin powder is suitable for cosmetics (particularly skin cosmetics).
- Cosmetics (or cosmetics) containing the resin powder of the present invention are not particularly limited, and include creams (facial claims, body creams, lip balms, etc.), foundations, powders (face powders, etc.), eye shadows, eyeliners, Examples include mascara, sunscreen, lotion, milky lotion, beauty essence, scrub agent, and pack agent.
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Abstract
Description
本発明の樹脂粉体は、紫外線散乱剤(紫外線防止剤)を含んでいる。換言すれば、本発明の樹脂粉体は、紫外線散乱剤と樹脂とを含む樹脂粉体である。そして、この樹脂粉体は、後述するように板状の形状を有する。
本発明の樹脂粉体は、樹脂で構成されている。すなわち、本発明の樹脂粉体は、樹脂をマトリックス(又はバインダー)とし、このマトリックス(又はバインダー)中に紫外線散乱剤を含む(又は紫外線散乱剤が分散している)。
紫外線散乱剤(紫外線防止剤)としては、紫外線散乱機能を有する添加剤であれば特に限定されず、有機物、無機物のいずれであってもよいが、通常、無機物(特に無機化合物)であってもよい。
本発明の樹脂粉体は、必要に応じて、他の添加剤(紫外線散乱剤以外の添加剤)を含んでいてもよい。このような他の添加剤としては、用途に応じて適宜選択できるが、例えば、安定剤(紫外線吸収剤など)、充填剤、着色剤、分散剤、乳化剤、香料、防腐剤、抗酸化剤、薬用成分、増量剤、消泡剤、保湿剤、滑剤などが挙げられる。これらの添加剤は、単独で又は2種以上組み合わせてもよい。
本発明の樹脂粉体の形状は、板状(平板状)である。このような板状の樹脂粉体において、平均厚み(板状の一次粒子における平均厚み)は、例えば、3μm以下(例えば、0.05~2.5μm)、好ましくは2μm以下(例えば、0.1~1.8μm)、さらに好ましくは1.5μm以下(例えば、0.15~1.3μm)、特に1.2μm以下(例えば、0.2~1.2μm)であってもよい。
本発明の樹脂粉体(板状樹脂粉体)の製造方法は、特に限定されず、例えば、(A)紫外線散乱剤を含む樹脂粉体(板状化されていない樹脂粉体、単に樹脂粉体ということがある)を板状化処理する方法、(B)紫外線散乱剤を含む樹脂で形成されたフィルム(又はシート又はフィルム状物)を、粉砕(又は破砕)する方法などが挙げられる。本発明では、特に、方法(A)を好適に使用できる。方法(A)では、フィルムを形成する必要がない上、比較的大きさ(厚みや粒径)にバラツキの小さい粉体を効率よく得やすい。
本発明の樹脂粉体(板状樹脂粉体)は、紫外線散乱機能が要求される種々の用途に使用できるが、特に、化粧料(又は化粧品)に好適に用いることができる。
試料(サンプル)9.5gを、2Lの蒸留水で3回洗い、濾過、減圧乾燥機で乾燥させた。
試料(サンプル)を水に分散し、レーザー回折/散乱式粒子径分布測定装置(堀場製作所製、LA920)を用いて測定した。
酸化チタン粒子[二酸化チタン、デュポン社製、Ti-Pure(R) Titanium Dioxide Pigment - Paint Coatings-DryGrades R-105、表面処理(シリカ、アルミナジメチルシロキサン処理)品]50重量部、ポリアミド樹脂(ポリアミド12、ダイセル・エボニック(株)製)50重量部を用い、特開2005-179646号公報の実施例1と同様にして、酸化チタン粒子を含むポリアミド粒子(真球状、平均粒子径4.1μm、酸化チタン粒子の割合50重量%)を得た。
実施例1において、酸化チタンに代えて、酸化亜鉛粒子(平均粒子径20nm、堺化学工業(株)製、「FINEX-50S-LP2」、表面処理(オルガノポリシロキサン)品)50重量部を用いること以外は、実施例1と同様にして、酸化亜鉛粒子を含むポリアミド粒子(真球状、平均粒子径4.5μm、酸化亜鉛粒子の割合50重量%)を得た。
実施例1において、ポリアミド樹脂を50重量部から40重量部に変えたこと以外は、実施例1と同様にして、酸化チタン粒子を含むポリアミド粒子(真球状、平均粒子径4.5μm、酸化チタン粒子の割合55重量%)を得た。
実施例1において、酸化チタン粒子を50重量部から60重量部に、ポリアミド樹脂を50重量部から40重量部に変えたこと以外は、実施例1と同様にして、酸化チタン粒子を含むポリアミド粒子(真球状、平均粒子径5.7μm、酸化チタン粒子の割合60重量%)を得た。
実施例2において、ポリアミド樹脂を50重量部から40重量部に変えたこと以外は、実施例2と同様にして、酸化亜鉛粒子を含むポリアミド粒子(真球状、平均粒子径4.7μm、酸化亜鉛粒子の割合55重量%)を得た。
実施例1において、酸化亜鉛粒子を50重量部から60重量部に、ポリアミド樹脂を50重量部から40重量部に変えたこと以外は、実施例1と同様にして、酸化亜鉛粒子を含むポリアミド粒子(真球状、平均粒子径6.7μm、酸化亜鉛粒子の割合60重量%)を得た。
Claims (14)
- 紫外線散乱剤を含む樹脂粉体であって、板状である樹脂粉体。
- 樹脂粉体を構成する樹脂が熱可塑性樹脂である請求項1記載の樹脂粉体。
- 樹脂粉体を構成する樹脂がポリアミド樹脂である請求項1又は2記載の樹脂粉体。
- 紫外線散乱剤が金属酸化物粒子である請求項1~3のいずれかに記載の樹脂粉体。
- 紫外線散乱剤が、平均粒子径150nm以下の粒子である請求項1~4のいずれかに記載の樹脂粉体。
- 紫外線散乱剤が、平均粒子径100nm以下の金属酸化物粒子であって、酸化チタン粒子および酸化亜鉛粒子から選択された少なくとも1種の金属酸化物粒子である請求項1~5のいずれかに記載の樹脂粉体。
- 紫外線散乱剤の割合が、樹脂粉体を構成する樹脂100重量部に対して5~300重量部である請求項1~6のいずれかに記載の樹脂粉体。
- 電子顕微鏡写真より求められる平均厚みが2μm以下である請求項1~7のいずれかに記載の樹脂粉体。
- 電子顕微鏡写真より求められる平均厚みと平均径との割合が、前者/後者=1/5~1/200である請求項1~8のいずれかに記載の樹脂粉体。
- 紫外線散乱剤を含む複数の樹脂粒子を板状化処理して得られる粉体である請求項1~9のいずれかに記載の樹脂粉体。
- 樹脂粒子の平均粒子径が0.5~100μmである請求項10記載の樹脂粉体。
- 化粧料に用いる請求項1~11のいずれかに記載の樹脂粉体。
- 紫外線散乱剤を含む樹脂粉体を板状化処理し、請求項1~12のいずれかに記載の樹脂粉体を製造する方法。
- 請求項1~12のいずれかに記載の樹脂粉体を含む化粧料。
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KR1020157032259A KR102164862B1 (ko) | 2013-05-14 | 2014-04-24 | 자외선 산란제를 함유하는 수지 분체 및 그의 제조 방법, 및 화장료 |
EP14798119.5A EP2997954B1 (en) | 2013-05-14 | 2014-04-24 | Resin powder including ultraviolet scattering agent, production method therefor, and cosmetic |
JP2015517017A JP6502254B2 (ja) | 2013-05-14 | 2014-04-24 | 紫外線散乱剤を含有する樹脂粉体及びその製造方法並びに化粧料 |
CN201480028050.9A CN105228578A (zh) | 2013-05-14 | 2014-04-24 | 含有紫外线散射剂的树脂粉体及其制造方法以及化妆材料 |
US14/786,758 US20160096946A1 (en) | 2013-05-14 | 2014-04-24 | Resin powder including ultraviolet scattering agent, producing method therefor, and cosmetic |
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JP2016139506A (ja) * | 2015-01-27 | 2016-08-04 | 三菱マテリアル電子化成株式会社 | 銀被覆樹脂粒子及び該粒子を含有する導電性材料 |
JP2018527315A (ja) * | 2015-07-22 | 2018-09-20 | ランダ ラブス(2012)リミテッド | 紫外線防御組成物 |
JP2019521956A (ja) * | 2016-05-05 | 2019-08-08 | ランダ ラブス(2012)リミテッド | Uv保護組成物およびその使用 |
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CN106098234A (zh) * | 2016-06-24 | 2016-11-09 | 浙江英美达电缆科技有限公司 | 一种抗长期紫外老化的铝合金电力电缆 |
CN106128618A (zh) * | 2016-06-24 | 2016-11-16 | 浙江英美达电缆科技有限公司 | 一种抗长期紫外老化的铝合金电线 |
CN105895190A (zh) * | 2016-06-24 | 2016-08-24 | 浙江英美达电缆科技有限公司 | 一种抗长期紫外老化的绕包铝合金电力电缆 |
CN106046601A (zh) * | 2016-06-24 | 2016-10-26 | 浙江英美达电缆科技有限公司 | 一种阻燃抗长期紫外老化的绕包铝合金电力电缆 |
CN106065138A (zh) * | 2016-06-24 | 2016-11-02 | 浙江英美达电缆科技有限公司 | 一种抗长期紫外老化的钢带铠装铝合金电力电缆 |
CN106098233A (zh) * | 2016-06-24 | 2016-11-09 | 浙江英美达电缆科技有限公司 | 一种阻燃抗长期紫外老化的铝合金电力电缆 |
CN105906992A (zh) * | 2016-06-24 | 2016-08-31 | 浙江英美达电缆科技有限公司 | 一种阻燃抗长期紫外老化的钢带铠装铝合金电力电缆 |
US11166887B2 (en) * | 2017-06-08 | 2021-11-09 | Shiseido Company, Ltd. | Water-in-oil emulsion cosmetic |
CN109758416A (zh) * | 2018-12-30 | 2019-05-17 | 滁州格锐矿业有限责任公司 | 一种化妆品填料及其制备方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2016139506A (ja) * | 2015-01-27 | 2016-08-04 | 三菱マテリアル電子化成株式会社 | 銀被覆樹脂粒子及び該粒子を含有する導電性材料 |
JP2018527315A (ja) * | 2015-07-22 | 2018-09-20 | ランダ ラブス(2012)リミテッド | 紫外線防御組成物 |
JP2019521956A (ja) * | 2016-05-05 | 2019-08-08 | ランダ ラブス(2012)リミテッド | Uv保護組成物およびその使用 |
JP7120629B2 (ja) | 2016-05-05 | 2022-08-17 | ランダ ラブス(2012)リミテッド | Uv保護組成物およびその使用 |
Also Published As
Publication number | Publication date |
---|---|
TW201500457A (zh) | 2015-01-01 |
JP6502254B2 (ja) | 2019-04-17 |
KR20160007525A (ko) | 2016-01-20 |
EP2997954A1 (en) | 2016-03-23 |
US20160096946A1 (en) | 2016-04-07 |
JPWO2014185249A1 (ja) | 2017-02-23 |
KR102164862B1 (ko) | 2020-10-13 |
CN105228578A (zh) | 2016-01-06 |
EP2997954A4 (en) | 2016-10-05 |
EP2997954B1 (en) | 2020-01-22 |
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