WO2012147887A1 - 六角柱状酸化亜鉛粒子、その製造方法、並びに、それを配合した化粧料、放熱性フィラー、放熱性樹脂組成物、放熱性グリース及び放熱性塗料組成物 - Google Patents
六角柱状酸化亜鉛粒子、その製造方法、並びに、それを配合した化粧料、放熱性フィラー、放熱性樹脂組成物、放熱性グリース及び放熱性塗料組成物 Download PDFInfo
- Publication number
- WO2012147887A1 WO2012147887A1 PCT/JP2012/061281 JP2012061281W WO2012147887A1 WO 2012147887 A1 WO2012147887 A1 WO 2012147887A1 JP 2012061281 W JP2012061281 W JP 2012061281W WO 2012147887 A1 WO2012147887 A1 WO 2012147887A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- zinc oxide
- oxide particles
- heat
- dissipating
- hexagonal columnar
- Prior art date
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B7/00—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions
- C30B7/14—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions the crystallising materials being formed by chemical reactions in the solution
-
- 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
- A61K8/0245—Specific shapes or structures not provided for by any of the groups of A61K8/0241
-
- 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
-
- 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
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
- C01G9/02—Oxides; Hydroxides
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/04—Compounds of zinc
- C09C1/043—Zinc oxide
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/16—Oxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
- C01P2004/12—Particle morphology extending in one dimension, e.g. needle-like with a cylindrical shape
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/40—Particle morphology extending in three dimensions prism-like
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
-
- 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
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/016—Additives defined by their aspect ratio
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
Definitions
- the present invention relates to hexagonal columnar zinc oxide particles, a method for producing the same, and a cosmetic, a heat dissipating filler, a heat dissipating resin composition, a heat dissipating grease, and a heat dissipating coating composition containing the same.
- ultrafine particles having an average particle diameter of 0.1 ⁇ m or less are used as the sunscreen ultraviolet shielding agent for zinc oxide particles.
- Patent Documents 1 and 2 disclose fine-particle zinc oxide that can be used as an ultraviolet shielding agent.
- Zinc oxide particles having an average particle diameter of 0.1 ⁇ m or more have been produced by the prior art, but few of these zinc oxide particles were controlled to have a small aspect ratio.
- Zinc oxide particles having an average particle size of 0.1 ⁇ m or more and a large aspect ratio have the disadvantage that the high transparency required for sunscreen agents cannot be stably obtained, and zinc oxide having further excellent properties. There is a need for particle development.
- the conventional fine zinc oxide particles of less than 0.1 ⁇ m have a drawback that the transmitted light increases as the particles become smaller, and the ultraviolet shielding effect on the long wavelength side in the UVA region (wavelength: 315 to 380 nm) is remarkably reduced.
- the size of the zinc oxide particles by increasing the size of the zinc oxide particles to 0.1 ⁇ m, it becomes possible to shield ultraviolet rays in the UVA region on the longer wavelength side than conventional fine zinc oxide particles of less than 0.1 ⁇ m. From such a technical viewpoint, development of zinc oxide particles having a size of 0.1 ⁇ m or more and less than 0.5 ⁇ m is required.
- Patent Document 3 describes hexagonal columns and hexagonal drum-like zinc oxide particles that can be used as cosmetics.
- the manufacturing method cannot obtain hexagonal columnar zinc oxide particles of less than 0.5 ⁇ m.
- such zinc oxide particles having a particle diameter of 0.5 ⁇ m or more are not preferable in that the sufficiently high transparency required for the sunscreen agent cannot be obtained.
- zinc oxide particles have high thermal conductivity, they can be used as a heat dissipating filler. Zinc oxide particles having such properties are often used having a large particle size in order to increase the filling rate. However, if the heat-dissipating filler can be used for the purpose of increasing heat conduction by blending particles having a large particle diameter, the heat conduction can be increased more efficiently.
- the present invention has a specific primary particle diameter and aspect ratio, and has high ultraviolet shielding properties and transparency, so that zinc oxide particles that can be suitably used as cosmetics and heat dissipation materials are obtained. It is the purpose.
- the present invention is hexagonal columnar zinc oxide particles having a primary particle diameter of 0.1 ⁇ m or more and less than 0.5 ⁇ m and an aspect ratio of less than 2.5.
- the hexagonal columnar zinc oxide particles are preferably obtained by aging fine particle zinc oxide as a seed in water in which a zinc salt is dissolved.
- the hexagonal columnar zinc oxide particles preferably have a D90 / D10 in the particle size distribution of 2.4 or less.
- This invention is also cosmetics characterized by containing the hexagonal columnar zinc oxide particle mentioned above.
- the present invention is also a heat dissipating filler comprising the hexagonal columnar zinc oxide particles described above.
- This invention is also a heat-radiating resin composition characterized by containing the hexagonal columnar zinc oxide particle mentioned above.
- the present invention is also a heat dissipating grease characterized by containing the hexagonal columnar zinc oxide particles described above.
- This invention is also a heat-radiating coating composition characterized by containing the hexagonal columnar zinc oxide particle mentioned above.
- the zinc oxide particles of the present invention have excellent ultraviolet shielding properties and excellent transparency, they can be suitably used as an ultraviolet shielding agent for cosmetics. Further, when used as a heat dissipating filler, it exhibits excellent heat dissipating performance especially in combination with other heat dissipating fillers having a large particle size.
- FIG. 2 is a transmission electron micrograph of the zinc oxide particles of the present invention obtained in Example 1.
- FIG. 2 is a transmission electron micrograph of the zinc oxide particles of the present invention obtained in Example 1 observed at a higher magnification.
- 2 is an X-ray diffraction spectrum of the zinc oxide particles of the present invention obtained in Example 1.
- 2 is a transmission electron micrograph of the zinc oxide particles of the present invention obtained in Example 2.
- FIG. 4 is a transmission electron micrograph of the zinc oxide particles of the present invention obtained in Example 2 observed at a higher magnification.
- 4 is a transmission electron micrograph of the zinc oxide particles of the present invention obtained in Example 3.
- FIG. 4 is a transmission electron micrograph of the zinc oxide particles of the present invention obtained in Example 3 observed at a higher magnification.
- Example 3 It is a scanning electron micrograph of the zinc oxide particles of the present invention obtained by Example 3. 4 is an X-ray diffraction spectrum of the zinc oxide particles of the present invention obtained in Example 3. 4 is a transmission electron micrograph of the zinc oxide particles of the present invention obtained in Example 4.
- FIG. 4 is a transmission electron micrograph of the zinc oxide particles of the present invention obtained in Example 4 observed at a higher magnification.
- 6 is a transmission electron micrograph of the zinc oxide particles of the present invention obtained in Example 5.
- FIG. 6 is a transmission electron micrograph of the zinc oxide particles of the present invention obtained in Example 5 observed at a higher magnification.
- 2 is a transmission electron micrograph of zinc oxide particles (fine zinc oxide manufactured by Sakai Chemical Industry Co., Ltd.) used in Comparative Example 1.
- FIG. 3 is an explanatory diagram for a method for measuring the aspect ratio of hexagonal columnar zinc oxide particles of the present invention obtained in Examples 1 to 5. It is explanatory drawing about the measuring method of the aspect-ratio of the amorphous zinc oxide particle of a comparative example. It is explanatory drawing about the measuring method of the aspect-ratio of the hexagonal plate-shaped zinc oxide particle of a comparative example.
- the present invention is described in detail below.
- the present invention is hexagonal columnar zinc oxide particles having a primary particle diameter of 0.1 ⁇ m or more and less than 0.5 ⁇ m and an aspect ratio of less than 2.5.
- zinc oxide particles having a size of less than 0.1 ⁇ m and large zinc oxide particles having a size of 0.5 ⁇ m or more have been known, but little is known about zinc oxide particles having an intermediate size.
- this invention it has the shape of hexagonal column shape whose aspect ratio is less than 2.5.
- the present invention provides hexagonal columnar zinc oxide particles having a small aspect ratio and a primary particle diameter of 0.1 ⁇ m or more and less than 0.5 ⁇ m. As described above, by reducing the aspect ratio, high transparency can be obtained even when the primary particle diameter is 0.1 ⁇ m or more and less than 0.5 ⁇ m.
- the hexagonal columnar zinc oxide particles of the present invention can be obtained by crystal growth of finely divided zinc oxide serving as a seed (seed crystal) in an aqueous zinc acetate solution.
- fine particle zinc oxide serving as a seed (seed crystal)
- the primary particle diameter can be arbitrarily controlled.
- hexagonal columnar zinc oxide particles having a small aspect ratio as described above can be selectively obtained.
- hexagonal columnar zinc oxide particles are known, but these have a large particle diameter exceeding 0.5 ⁇ m.
- the heat dissipating filler it is extremely important to increase the filling rate, and for this purpose, it is preferable to use a combination of particles having a large particle size and particles having a smaller particle size. For this reason, the zinc oxide particle which has such a specific particle diameter can be used conveniently also as a heat dissipation filler.
- the true specific gravity of the particles ⁇ was 5.6, which is the value of the true specific gravity of zinc oxide.
- the zinc oxide particles of the present invention have a hexagonal column shape with an aspect ratio of less than 2.5. That is, it is hexagonal columnar zinc oxide particles, and when such hexagonal columnar zinc oxide particles having a small aspect ratio are used in cosmetics, they can be excellent in transparency and ultraviolet shielding properties. .
- the aspect ratio in the present invention is determined by the following method. Regarding the aspect ratio of the hexagonal columnar zinc oxide particles, the side surfaces of the hexagonal columnar zinc oxide particles face the front in a field of view of 2000 to 50000 times of the transmission electron microscope (TEM, JEM-1200EX II, manufactured by JEOL Ltd.).
- the major axis and the minor axis are measured and the ratio of the major axis to the minor axis length; the major axis / minor axis is determined.
- the major axis / minor axis was measured for 250 hexagonal columnar zinc oxide particles in the TEM photograph, and the average value of the cumulative distribution was obtained as the aspect ratio.
- FIG. 20 shows a method for measuring the aspect ratio of hexagonal columnar zinc oxide particles.
- the hexagonal columnar zinc oxide particles of the present invention preferably have a D90 / D10 in the particle size distribution of 2.4 or less.
- D10 ( ⁇ m) means 10% cumulative particle size on a volume basis
- D90 ( ⁇ m) means 90% cumulative particle size on a volume basis.
- D90 / D10 is an index representing the sharpness of the particle size distribution. The larger the D90 / D10, the broader the particle size distribution, and the smaller the D90 / D10, the sharper the particle size distribution. That is, D90 / D10 of 2.4 or less means that the number of coarse particles having an extremely large particle size is small, the number of fine particles having an extremely small particle size is small, and the particle size distribution is sharp. Is.
- the D90 / D10 is more preferably 2.3 or less, and even more preferably 2.2 or less.
- Zinc oxide particles having a sharp particle size distribution are particularly preferred in that they are excellent in transparency.
- the transparency is further improved by setting the particle size distribution within the specific range described above.
- D10 and D90 of the zinc oxide particles are values measured by a dynamic light scattering particle size distribution measuring device Nanotrac UPA-UT (manufactured by Nikkiso Co., Ltd.). About the measurement, the zinc oxide particle was disperse
- the method for producing the zinc oxide particles having the above-described shape is not particularly limited.
- the zinc oxide particles can be obtained by a production method including a step of aging fine zinc oxide in water in which a zinc salt is dissolved.
- Such a method for producing zinc oxide particles is also one aspect of the present invention. According to such a manufacturing method, there is an advantage that zinc oxide particles can be obtained directly without going through a thermal decomposition step such as firing. However, firing may be performed for the purpose of increasing crystallinity.
- Such a manufacturing method is different from the method of aging after forming particles by neutralization of a zinc salt compound as described in the cited document, because fine zinc oxide is added as a seed.
- the surface layer of particles grows while repeating dissolution and precipitation using fine zinc oxide as a seed as a nucleus.
- the particle size of the zinc oxide particles obtained after aging is determined based on the fine particle zinc oxide as a nucleus, and the particle shape and particle size are in a uniform state, thereby further sharpening the particle size distribution. Therefore, the particle diameter and the particle size distribution are preferable because they can be controlled to a higher degree. Further, it is also preferable in that zinc oxide particles having a sharp particle size distribution and a small aspect ratio can be selectively obtained by using finely divided zinc oxide as a seed.
- a particle diameter, a shape, etc. can be adjusted by adjusting ripening temperature, ripening time, zinc salt concentration, fine particle zinc oxide concentration, etc. as needed.
- the fine particle zinc oxide is not particularly limited, but the particle diameter is preferably 0.01 to 0.5 ⁇ m.
- the particle diameter of the fine zinc oxide corresponds to the diameter of a sphere having the same surface area as that obtained by the BET method. That is, the particle diameter is a value obtained by the following formula from specific surface area: Sg determined by a fully automatic BET specific surface area measuring device Macsorb (manufactured by Mountaintech) and true specific gravity of ⁇ : ⁇ .
- Particle diameter ( ⁇ m) [6 / (Sg ⁇ ⁇ )] (Sg (m 2 / g): specific surface area, ⁇ (g / cm 3 ): true specific gravity of particles) Note that the true specific gravity of the particles: ⁇ was 5.6, which is the value of the true specific gravity of zinc oxide.
- the particulate zinc oxide that can be used as a raw material is not particularly limited, and zinc oxide produced by a known method can be used.
- Examples of commercially available products include FINEX-75, FINEX-50, FINEX-30, fine zinc oxide, SF-15, and one type of zinc oxide manufactured by Sakai Chemical Industry.
- the fine zinc oxide is aged in water in which a zinc salt is dissolved. That is, it is obtained by dispersing the above-mentioned fine zinc oxide in an aqueous zinc salt solution, heating in that state, and crystal growth.
- the solvent used in the present invention is water. Water is most preferable from the viewpoint of production management and cost because it is inexpensive and safe to handle.
- the aqueous zinc salt solution to be used is not particularly limited, and examples thereof include aqueous solutions of zinc acetate, zinc nitrate, zinc sulfate, zinc chloride, zinc formate and the like.
- the specific hexagonal columnar zinc oxide particles of the present invention can be suitably obtained particularly when a zinc acetate aqueous solution is used.
- these zinc salt aqueous solutions may be prepared by mixing zinc oxide, an acid, and water to hydrolyze the zinc oxide.
- the particle shape and particle size of zinc oxide used when preparing an aqueous zinc salt solution with zinc oxide, acid and water are not particularly limited, but from the viewpoint of reducing impurities as much as possible, the zinc purity of zinc oxide is 95% or more.
- the acid include acetic acid, nitric acid, sulfuric acid, hydrochloric acid, formic acid, citric acid, succinic acid, propionic acid, malonic acid, lactic acid, tartaric acid, gluconic acid, succinic acid, etc.
- the specific hexagonal columnar zinc oxide particles of the present invention are preferably obtained.
- the zinc salt concentration in the zinc salt aqueous solution is preferably 0.30 to 0.45 mol / l.
- the fine zinc oxide concentration is preferably 10 to 500 g / l based on the total amount of the slurry.
- the method for preparing the slurry is not particularly limited.
- the above components are added to water and dispersed at 5 to 30 ° C. for 10 to 30 minutes, whereby a uniform slurry having a fine zinc oxide concentration of 10 to 500 g / l. It can be.
- a small amount of components other than fine zinc oxide, zinc salt and water may be added within a range not impairing the effects of the present invention.
- a dispersant or the like can be added.
- the aging is preferably performed at 45 to 110 ° C.
- the aging time can be 0.5 to 24 hours. Since the particle diameter can be adjusted by conditions such as aging temperature, aging time, zinc salt concentration, and fine particle zinc oxide concentration, these conditions can be appropriately set according to the intended zinc oxide particles. preferable.
- the hexagonal columnar zinc oxide particles thus obtained may be subjected to post-treatment such as filtration, washing with water, and drying, as necessary.
- the hexagonal columnar zinc oxide particles produced by the above method may be classified by a sieve as necessary. Examples of the classification method using a sieve include wet classification and dry classification. Further, a treatment such as wet pulverization or dry pulverization may be performed.
- the method for producing hexagonal columnar zinc oxide particles of the present invention can obtain zinc oxide particles without performing a baking treatment, but the hexagonal columnar zinc oxide particles obtained by the above-described method can be obtained.
- a baking treatment may be performed.
- firing a method using any known apparatus can be exemplified, and the processing conditions and the like are not particularly limited.
- the hexagonal columnar zinc oxide particles of the present invention may be further subjected to surface treatment as necessary.
- the surface treatment is not particularly limited, and examples thereof include known treatment methods such as inorganic surface treatment for forming an inorganic oxide layer such as a silica layer, an alumina layer, a zirconia layer, and a titania layer, and other various surface treatments. it can. Further, a plurality of types of surface treatments may be sequentially performed.
- surface treatment surface treatment with a surface treatment agent selected from organosilicon compounds, organoaluminum compounds, organotitanium compounds, higher fatty acids, higher fatty acid esters, metal soaps, polyhydric alcohols or alkanolamines, etc.
- a surface treatment agent selected from organosilicon compounds, organoaluminum compounds, organotitanium compounds, higher fatty acids, higher fatty acid esters, metal soaps, polyhydric alcohols or alkanolamines, etc.
- Such a surface treatment agent can be appropriately set in the amount of treatment according to the particle diameter of the zinc oxide particles.
- organosilicon compound examples include organopolysiloxanes such as methylhydrogenpolysiloxane and dimethylpolysiloxane, and silane coupling agents such as triethoxyvinylsilane and diphenyldimethoxysilane.
- Examples of the higher fatty acid include higher fatty acids such as lauric acid, stearic acid, and palmitic acid having 10 to 30 carbon atoms.
- Examples of the higher fatty acid esters include alkyl esters of the higher fatty acids such as octyl palmitate.
- Examples of the metal soap include metal salts of the higher fatty acids such as aluminum stearate and aluminum laurate.
- the metal species constituting the metal soap is not particularly limited, and examples thereof include aluminum, lithium, magnesium, calcium, strontium, barium, zinc, tin and the like.
- Examples of the polyhydric alcohol include trimethylolethane, trimethylolpropane, pentaerythritol and the like.
- Examples of the alkanolamine include diethanolamine, dipropanolamine, triethanolamine, and tripropanolamine.
- the treatment with the surface treatment agent can be obtained by mixing a predetermined amount of a surface treatment agent with the hexagonal columnar zinc oxide particles. Further, after suspending the hexagonal columnar zinc oxide particles in an appropriate medium, for example, water, alcohol, ether, etc., a surface treating agent is added to the suspension, stirred, fractionated, dried and pulverized. It can also be obtained by evaporation to dryness and pulverization.
- an appropriate medium for example, water, alcohol, ether, etc.
- the hexagonal columnar zinc oxide particles subjected to the surface treatment as described above have various coating layers on their surfaces, their physiological activity and chemical activity must be suppressed when blended in cosmetics. Therefore, it can be made particularly excellent as a cosmetic.
- hexagonal columnar zinc oxide particles of the present invention is not particularly limited, but can be suitably used, for example, in the use of cosmetic raw materials and heat-dissipating fillers. Such cosmetics and heat dissipating fillers are also part of the present invention.
- the cosmetic containing the hexagonal columnar zinc oxide particles of the present invention is excellent in transparency because it has ultraviolet shielding properties and a small aspect ratio.
- Examples of the cosmetic of the present invention include foundations, makeup bases, eye shadows, blushers, mascara, lipsticks, sunscreen agents, and the like.
- the cosmetics of the present invention can be in any form of oily cosmetics, aqueous cosmetics, O / W type cosmetics, and W / O type cosmetics. Especially, it can be used especially suitably in a sunscreen agent.
- the cosmetic of the present invention may be used in combination with any aqueous component or oily component that can be used in the cosmetic field, in addition to the components constituting the mixture.
- the aqueous component and the oil component are not particularly limited, and examples thereof include oils, surfactants, moisturizers, higher alcohols, sequestering agents, natural and synthetic polymers, water-soluble and oil-soluble polymers, UV shielding agents, Various extracts, inorganic and organic pigments, inorganic and organic clay minerals, inorganic and organic pigments treated with metal soaps or silicones, organic dyes and other colorants, preservatives, antioxidants, pigments, thickeners, pH
- You may contain components, such as a regulator, a fragrance
- the compounding amounts of these compounding components are not particularly limited as long as the
- the oil content is not particularly limited.
- the lipophilic nonionic surfactant is not particularly limited.
- sorbitan monooleate sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate.
- sorbitan fatty acid esters such as diglycerol sorbitan penta-2-ethylhexylate, diglycerol sorbitan tetra-2-ethylhexylate, mono-cotton oil fatty acid glycerin, glyceryl monoerucate, glyceryl sesquioleate, glyceryl monostearate, ⁇ , ⁇ '-Glycerol polyglycerin fatty acids such as pyroglutamate glyceryl oleate, glyceryl monostearate malate, propylene glycol monostearate Glycol fatty acid esters, hardened castor oil derivatives, glycerin alkyl ethers and the like.
- sorbitan fatty acid esters such as diglycerol sorbitan penta-2-ethylhexylate, diglycerol sorbitan tetra-2-ethylhexylate, mono-cotton
- the hydrophilic nonionic surfactant is not particularly limited.
- POE sorbitan fatty acid esters such as POE sorbitan monostearate, POE sorbitan monooleate, and POE sorbitan tetraoleate, POE sorbite monolaurate, and POE sorbite mono POE sorbite fatty acid esters such as oleate, POE sorbite pentaoleate, POE sorbite monostearate, POE glycerin fatty acid esters such as POE glycerin monostearate, POE glycerin monoisostearate, POE glycerin triisostearate, POE POE fatty acid esters such as monooleate, POE distearate, POE monodiolate, ethylene glycol distearate, POE lauryl ether, POE POE alkyl ethers such as yl ether, POE stearyl ether
- surfactants examples include anionic surfactants such as fatty acid soaps, higher alkyl sulfates, POE lauryl sulfate triethanolamine, alkyl ether sulfates, alkyltrimethylammonium salts, alkylpyridinium salts, alkyl quaternary salts. Stabilizes cationic surfactants such as ammonium salts, alkyldimethylbenzylammonium salts, POE alkylamines, alkylamine salts, polyamine fatty acid derivatives, and amphoteric surfactants such as imidazoline-based amphoteric surfactants and betaine-based surfactants. And you may mix
- anionic surfactants such as fatty acid soaps, higher alkyl sulfates, POE lauryl sulfate triethanolamine, alkyl ether sulfates, alkyltrimethylammonium salts, al
- the humectant is not particularly limited, and examples thereof include xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate, sodium lactate, bile salt, dl- Examples thereof include pyrrolidone carboxylate, short-chain soluble collagen, diglycerin (EO) PO adduct, Isaiyobara extract, Achillea millefolium extract, and Merirot extract.
- EO diglycerin
- the higher alcohol is not particularly limited, and examples thereof include linear alcohols such as lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetostearyl alcohol, monostearyl glycerin ether (batyl alcohol), 2-decyl.
- linear alcohols such as lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetostearyl alcohol, monostearyl glycerin ether (batyl alcohol), 2-decyl.
- branched chain alcohols such as tetradecinol, lanolin alcohol, cholesterol, phytosterol, hexyldodecanol, isostearyl alcohol, octyldodecanol, and the like.
- the sequestering agent is not particularly limited.
- Examples thereof include sodium, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetic acid and the like.
- the natural water-soluble polymer is not particularly limited.
- the semi-synthetic water-soluble polymer is not particularly limited.
- starch-based polymers such as carboxymethyl starch and methylhydroxypropyl starch, methylcellulose, nitrocellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose sulfate, Examples thereof include cellulose polymers such as hydroxypropylcellulose, sodium carboxymethylcellulose (CMC), crystalline cellulose, and cellulose powder, and alginic acid polymers such as sodium alginate and propylene glycol alginate.
- CMC carboxymethylcellulose
- crystalline cellulose cellulose powder
- alginic acid polymers such as sodium alginate and propylene glycol alginate.
- the synthetic water-soluble polymer is not particularly limited, and examples thereof include vinyl polymers such as polyvinyl alcohol, polyvinyl methyl ether, and polyvinyl pyrrolidone, and polyoxyethylene polymers such as polyethylene glycol 20,000, 40,000, and 60,000. Examples thereof include polymers, polyoxyethylene polyoxypropylene copolymer copolymer polymers, acrylic polymers such as sodium polyacrylate, polyethyl acrylate and polyacrylamide, polyethyleneimine, and cationic polymers.
- the inorganic water-soluble polymer is not particularly limited, and examples thereof include bentonite, silicate A1Mg (beegum), laponite, hectorite, and silicic anhydride.
- the UV screening agent is not particularly limited.
- paraaminobenzoic acid hereinafter abbreviated as PABA
- PABA paraaminobenzoic acid
- PABA monoglycerin ester N, N-dipropoxy PABA ethyl ester, N, N-diethoxy PABA ethyl ester, N, N-dimethyl
- Benzoic acid UV screening agents such as PABA ethyl ester and N, N-dimethyl PABA butyl ester
- Anthranilic acid UV screening agents such as homomenthyl-N-acetylanthranylate
- Amyl salicylate Menthyl salicylate, Homomentil salicylate, Octyl salicylate
- Salicylic acid UV screening agents such as phenyl salicylate, benzyl salicylate, p-isopropanol phenyl salicylate; octylcinnamate, ethyl-4-isoprop
- Other drug components are not particularly limited and include, for example, vitamin A oil, retinol, retinol palmitate, inosit, pyridoxine hydrochloride, benzyl nicotinate, nicotinamide, nicotinic acid DL- ⁇ -tocopherol, magnesium ascorbate phosphate, 2 Vitamins such as -O- ⁇ -D-glucopyranosyl-L-ascorbic acid, vitamin D2 (ergocaciferol), dl- ⁇ -tocopherol, dl- ⁇ -tocopherol acetate, pantothenic acid, biotin; estradiol, ethinylestradiol, etc.
- Hormones such as arginine, aspartic acid, cystine, cysteine, methionine, serine, leucine and tryptophan; anti-inflammatory agents such as allantoin and azulene; whitening agents such as arbutin; astringents such as tannic acid; L Menthol, cooling agents and sulfur camphor such as, lysozyme chloride, can be mentioned pyridoxine chloride, and the like.
- the hexagonal columnar zinc oxide particles of the present invention can also be used as a heat dissipating filler.
- the hexagonal columnar zinc oxide particles of the present invention are used as a heat dissipating filler, it is preferable to use them in combination with heat dissipating fillers having different particle diameters.
- the heat dissipating filler that can be used in combination is not particularly limited, and examples thereof include metal oxides such as magnesium oxide, titanium oxide, and aluminum oxide, aluminum nitride, boron nitride, silicon carbide, silicon nitride, titanium nitride, and metal silicon. And diamond. Furthermore, it can also be used in combination with zinc oxide other than the hexagonal columnar zinc oxide particles described above.
- the heat dissipating filler used in combination may have an arbitrary shape such as a spherical shape, a needle shape, a rod shape, or a plate shape.
- the heat dissipating filler that can be used in combination preferably has an average particle diameter of 1 to 100 ⁇ m. Combining with such a large particle size heat dissipating filler is preferable in that the heat dissipating filler of the present invention is filled in the gap and the filling rate can be increased.
- the hexagonal columnar zinc oxide particles of the present invention are used in combination with other heat dissipating fillers, it is preferable to contain 10 to 90% by volume of the hexagonal columnar zinc oxide particles of the present invention based on the total amount of the heat dissipating filler. By setting it as such a ratio, a filling rate can be raised.
- the zinc oxide particles of the present invention can also be used as a heat dissipating filler composition in combination with other heat dissipating fillers.
- it when used in combination with other heat dissipating filler, it can be used in combination with a heat dissipating filler having a larger particle diameter, or in combination with a heat dissipating filler having a smaller particle diameter. It is also conceivable to use in combination with both.
- the other heat dissipating fillers are not particularly limited, and include metal oxides such as zinc oxide, magnesium oxide, titanium oxide, and aluminum oxide, aluminum nitride, boron nitride, silicon carbide, silicon nitride, titanium nitride, metal silicon, diamond, and the like. Can be mentioned.
- metal oxides such as zinc oxide, magnesium oxide, titanium oxide, and aluminum oxide, aluminum nitride, boron nitride, silicon carbide, silicon nitride, titanium nitride, metal silicon, diamond, and the like.
- the hexagonal columnar zinc oxide particles of the present invention are used as a heat dissipating filler, they can be used as a heat dissipating resin composition mixed with a resin.
- the resin used may be a thermoplastic resin or a thermosetting resin, and an epoxy resin, a phenol resin, a polyphenylene sulfide (PPS) resin, a polyester resin, polyamide, polyimide, polystyrene, polyethylene, Polypropylene, polyvinyl chloride, polyvinylidene chloride, fluororesin, polymethyl methacrylate, ethylene / ethyl acrylate copolymer (EEA) resin, polycarbonate, polyurethane, polyacetal, polyphenylene ether, polyetherimide, acrylonitrile-butadiene-styrene
- the resin include polymer (ABS) resin, liquid crystal resin (LCP), silicone resin, and acrylic resin.
- the heat-dissipating resin composition of the present invention includes (1) a thermoforming resin composition obtained by kneading a thermoplastic resin and the zinc oxide particles in a molten state, and (2) a thermosetting resin and the above-described resin composition. It may be a resin composition obtained by kneading the zinc oxide particles and then heat-curing, or (3) a resin composition for paint in which the zinc oxide particles are dispersed in a resin solution or dispersion.
- the resin component can be freely selected depending on the application. For example, when adhering and adhering to a heat source and a heat sink, a resin having high adhesiveness and low hardness such as silicone resin or acrylic resin may be selected.
- the resin when the heat radiating resin composition of the present invention is a resin composition for paint, the resin may be curable or non-curable.
- the paint may be a solvent-based one containing an organic solvent or a water-based one in which a resin is dissolved or dispersed in water.
- hexagonal columnar zinc oxide particles When used as a heat dissipating filler, they can also be used as a heat dissipating grease mixed with a base oil containing mineral oil or synthetic oil.
- a heat-dissipating grease ⁇ -olefin, diester, polyol ester, trimellitic acid ester, polyphenyl ether, alkylphenyl ether, etc. can be used as synthetic oil. It can also be used as a heat dissipating grease mixed with silicone oil.
- the hexagonal columnar zinc oxide particles of the present invention can be used in combination with other components when used as a heat dissipating filler.
- other components that can be used in combination include resins and surfactants.
- the hexagonal columnar zinc oxide particles of the present invention are used in the fields of rubber vulcanization accelerators, paint / ink pigments, electronic parts such as ferrite and varistors, pharmaceuticals, etc. in addition to the cosmetics and heat-dissipating fillers described above. can do.
- Example 1 FINEX-50 (manufactured by Sakai Chemical Industry Co., Ltd., particle size 0.02 ⁇ m) was dissolved in water by dissolving 66.51 g of zinc acetate dihydrate (zinc acetate manufactured by Hosoi Chemical Co., Ltd.) as water to obtain zinc acetate dihydrate.
- the slurry was repulped into 1200 ml of an aqueous zinc acetate solution prepared so as to have a concentration of 0.25 mol / l. Subsequently, the slurry was heated to 100 ° C. over 60 minutes while stirring, and aged at 100 ° C. for 7 hours while stirring. After aging, it was filtered and washed with water.
- the obtained solid was repulped into 3 liters of water to form a slurry, heated to 100 ° C. over 60 minutes with stirring, and heated and washed at 100 ° C. for 30 minutes with stirring. After heat washing, filtration, washing with water, and drying at 110 ° C. for 12 hours, hexagonal columnar zinc oxide particles having a primary particle size of 0.10 ⁇ m were obtained. The size and morphology of the obtained particles were observed with a transmission electron microscope (TEM, JEM-1200EX II, manufactured by JEOL Ltd.). The obtained electron micrograph is shown in FIG. Further, an electron micrograph at a high magnification is shown in FIG. The X-ray diffraction spectrum of the obtained particles is shown in FIG. Table 1 shows the evaluation results of the physical properties of the obtained particles and the physical properties of the coating film.
- TEM transmission electron microscope
- Example 2 80-15 g of SF-15 (manufactured by Sakai Chemical Industry Co., Ltd., particle size 0.08 ⁇ m) and 133.02 g of zinc acetate dihydrate (zinc acetate produced by Hosoi Chemical Co., Ltd.) were dissolved in water to obtain zinc acetate dihydrate.
- the slurry was repulped into 1200 ml of an aqueous zinc acetate solution prepared to have a concentration of 0.5 mol / l to form a slurry. Subsequently, the slurry was heated to 70 ° C. over 42 minutes while stirring, and aged at 70 ° C. for 3 hours while stirring. After aging, it was filtered and washed with water.
- the obtained solid was repulped into 3 liters of water to form a slurry, heated to 70 ° C. over 42 minutes with stirring, and heated and washed at 70 ° C. for 30 minutes with stirring. After heat washing, filtration, washing with water, and drying at 110 ° C. for 12 hours, hexagonal columnar zinc oxide particles having a primary particle size of 0.19 ⁇ m were obtained. The size and morphology of the obtained particles were observed with a transmission electron microscope (TEM, JEM-1200EX II, manufactured by JEOL Ltd.). The obtained electron micrograph is shown in FIG. Further, an electron micrograph at a high magnification is shown in FIG. Table 1 shows the evaluation results of the physical properties of the obtained particles and the physical properties of the coating film.
- TEM transmission electron microscope
- Example 3 80 g of SF-15 (manufactured by Sakai Chemical Industry Co., Ltd., particle size 0.08 ⁇ m) and 106.42 g of zinc acetate dihydrate (zinc acetate produced by Hosoi Chemical Co., Ltd.) were dissolved in water to obtain zinc acetate dihydrate.
- the slurry was repulped into 1200 ml of an aqueous zinc acetate solution prepared so as to have a concentration of 0.4 mol / l. Subsequently, the slurry was heated to 70 ° C. over 42 minutes while stirring, and aged at 70 ° C. for 5 hours while stirring. After aging, it was filtered and washed with water.
- the obtained solid was repulped into 3 liters of water to form a slurry, heated to 70 ° C. over 42 minutes with stirring, and heated and washed at 70 ° C. for 30 minutes with stirring. After heat washing, filtration, washing with water, and drying at 110 ° C. for 12 hours, hexagonal columnar zinc oxide particles having a primary particle size of 0.13 ⁇ m were obtained. The size and morphology of the obtained particles were observed with a transmission electron microscope (TEM, JEM-1200EX II, manufactured by JEOL Ltd.). The obtained electron micrograph is shown in FIG. Further, an electron micrograph at a high magnification is shown in FIG.
- TEM transmission electron microscope
- the size and form of the obtained particles were observed with a scanning electron microscope (SEM, JSM-7000F, manufactured by JEOL Ltd.).
- the obtained electron micrograph is shown in FIG.
- the X-ray diffraction spectrum of the obtained particles is shown in FIG. Table 1 shows the evaluation results of the physical properties of the obtained particles and the physical properties of the coating film.
- Example 4 80 g of SF-15 (manufactured by Sakai Chemical Industry Co., Ltd., particle size 0.08 ⁇ m) and 106.42 g of zinc acetate dihydrate (zinc acetate produced by Hosoi Chemical Co., Ltd.) were dissolved in water to obtain zinc acetate dihydrate.
- the slurry was repulped into 1200 ml of an aqueous zinc acetate solution prepared so as to have a concentration of 0.4 mol / l. Subsequently, the slurry was heated to 90 ° C. over 54 minutes while stirring, and aged at 90 ° C. for 7 hours while stirring. After aging, it was filtered and washed with water.
- the obtained solid was repulped into 3 liters of water to form a slurry, heated to 90 ° C. over 54 minutes with stirring, and heated and washed at 90 ° C. for 30 minutes with stirring. After heat washing, filtration, washing with water, and drying at 110 ° C. for 12 hours, hexagonal columnar zinc oxide particles having a primary particle size of 0.15 ⁇ m were obtained. The size and morphology of the obtained particles were observed with a transmission electron microscope (TEM, JEM-1200EX II, manufactured by JEOL Ltd.). The obtained electron micrograph is shown in FIG. Further, an electron micrograph at a high magnification is shown in FIG. Table 1 shows the evaluation results of the physical properties of the obtained particles and the physical properties of the coating film.
- TEM transmission electron microscope
- Example 5 FINEX-30 (manufactured by Sakai Chemical Industry Co., Ltd., particle size 0.04 ⁇ m) and zinc acetate dihydrate (zinc acetate manufactured by Hosoi Chemical Industry Co., Ltd.) 106.42 g were dissolved in water to obtain zinc acetate dihydrate.
- the slurry was repulped into 1200 ml of an aqueous zinc acetate solution prepared so as to have a concentration of 0.4 mol / l. Subsequently, the slurry was heated to 70 ° C. over 42 minutes while stirring, and aged at 70 ° C. for 3 hours while stirring. After aging, it was filtered and washed with water.
- the obtained solid was repulped into 3 liters of water to form a slurry, heated to 70 ° C. over 42 minutes with stirring, and heated and washed at 70 ° C. for 30 minutes with stirring. After heat washing, filtration, washing with water, and drying at 110 ° C. for 12 hours, hexagonal columnar zinc oxide particles having a primary particle diameter of 0.11 ⁇ m were obtained. The size and morphology of the obtained particles were observed with a transmission electron microscope (TEM, JEM-1200EX II, manufactured by JEOL Ltd.). The obtained electron micrograph is shown in FIG. Further, an electron micrograph at a high magnification is shown in FIG. Table 1 shows the evaluation results of the physical properties of the obtained particles and the physical properties of the coating film.
- TEM transmission electron microscope
- the obtained solid was repulped into 3 liters of water to form a slurry, heated to 70 ° C. over 42 minutes with stirring, and heated and washed at 70 ° C. for 30 minutes with stirring. After heat washing, filtration, washing with water, and drying at 110 ° C. for 12 hours, hexagonal plate-like zinc oxide particles having a primary particle diameter of 0.11 ⁇ m were obtained. The size and morphology of the obtained particles were observed with a transmission electron microscope (TEM, JEM-1200EX II, manufactured by JEOL Ltd.). The obtained electron micrograph is shown in FIG. Table 1 shows the evaluation results of the physical properties of the obtained particles and the physical properties of the coating film.
- TEM transmission electron microscope
- the obtained solid was repulped into 3 liters of water to form a slurry, heated to 90 ° C. over 54 minutes with stirring, and heated and washed at 90 ° C. for 30 minutes with stirring. After heating and washing, it was filtered, washed with water, and dried at 110 ° C. for 12 hours to obtain irregular shaped zinc oxide particles including a partially hexagonal plate shape with a primary particle size of 0.65 ⁇ m.
- the size and morphology of the obtained particles were observed with a transmission electron microscope (TEM, JEM-1200EX II, manufactured by JEOL Ltd.).
- the obtained electron micrograph is shown in FIG. Table 1 shows the evaluation results of the physical properties of the obtained particles and the physical properties of the coating film.
- the obtained solid was repulped into 3 liters of water to form a slurry, heated to 70 ° C. over 42 minutes with stirring, and heated and washed at 70 ° C. for 30 minutes with stirring. After heating and washing, it was filtered, washed with water, and dried at 110 ° C. for 12 hours to obtain rod-shaped zinc oxide particles having a primary particle size of 0.22 ⁇ m.
- the size and morphology of the obtained particles were observed with a transmission electron microscope (TEM, JEM-1200EX II, manufactured by JEOL Ltd.).
- the obtained electron micrograph is shown in FIG. Table 1 shows the evaluation results of the physical properties of the obtained particles and the physical properties of the coating film.
- composition of the obtained particles The X-ray diffraction spectra shown in FIGS. 3 and 9 and the composition of the particles obtained in Table 1 show the results of analysis by an X-ray diffractometer Ultima III (manufactured by Rigaku Corporation) having a copper tube. .
- the aspect ratio of the hexagonal columnar zinc oxide particles of the examples was measured by the measurement method described above.
- the aspect ratio of the zinc oxide particles having an irregular shape in the comparative example the zinc oxide particles having an irregular shape in a field of view of 2000 to 50000 times that of a transmission electron microscope (TEM, JEM-1200EX II, manufactured by JEOL Ltd.)
- TEM, JEM-1200EX II manufactured by JEOL Ltd.
- the major axis of the particle and the minor axis passing through the center of the major axis are measured, and the ratio of the major axis to the minor axis length; major axis / minor axis is determined.
- FIG. 21 shows a method for measuring the aspect ratio of amorphous zinc oxide particles.
- the aspect ratio of the zinc oxide particles having a hexagonal plate shape in the comparative example was measured using a transmission electron microscope (TEM, JEM-1200EX).
- D50, D90, D10, D90 / D10 are values measured by a dynamic light scattering particle size distribution measuring device Nanotrac UPA-UT (manufactured by Nikkiso Co., Ltd.).
- the zinc oxide particles of Examples and Comparative Examples were dispersed in water, and the measurement was performed with the refractive index of zinc oxide being 1.95 and the refractive index of water being 1.309.
- D50 ( ⁇ m) is 50% cumulative particle size on a volume basis
- D90 ( ⁇ m) is 90% cumulative particle size on a volume basis
- D10 ( ⁇ m) is 10% cumulative particle size on a volume basis.
- a ratio of D90 / D10 is calculated as an index of the sharpness of the particle size distribution. A larger value means that the particle size distribution is broader, and a smaller value means that the particle size distribution is sharper.
- a coating film was prepared by Yasuda Seiki Seisakusho. The prepared coating film was dried at 20 ° C. for 12 hours, and then used for measurement of total light transmittance 1, total light transmittance 2, total light transmittance 3, parallel light transmittance 1, and parallel light transmittance 2.
- Total light transmittance 1 Total light transmittance 2, Total light transmittance 3, Parallel light transmittance 1, Parallel light transmittance 2
- total light transmittance 1 (%), total light transmittance 2 (%), total light transmittance 3 (%), parallel light transmittance 1 (%), and parallel light transmittance 2 (%) are:
- the measured value of the prepared coating film was measured with a spectrophotometer V-570 (manufactured by JASCO Corporation).
- the value of total light transmittance 1 (%) is the value of total light transmittance at a wavelength of 310 nm
- the value of total light transmittance 2 (%) is the value of total light transmittance at a wavelength of 350 nm
- the total light transmittance 3 ( %) Is the value of total light transmittance at a wavelength of 375 nm
- the value of parallel light transmittance 1 (%) is the value of parallel light transmittance at a wavelength of 500 nm
- the value of parallel light transmittance 2 (%) is at a wavelength of 700 nm.
- the value of parallel light transmittance It means that the smaller the value of total light transmittance 1 (%), the higher the ultraviolet shielding effect against UVB wavelength ultraviolet light.
- total light transmittance 2 (%) and total light transmittance 3 (%) are The smaller the value, the higher the ultraviolet shielding effect against ultraviolet rays having a wavelength of UVA.
- the value of the total light transmittance 3 (%) is small, it means that the shielding region with respect to ultraviolet rays having a wavelength of UVA is spread over a wider area.
- visible light transparency is so high that the value of parallel light transmittance 1 (%) and parallel light transmittance 2 (%) is large.
- the hexagonal columnar zinc oxide particle of this invention is excellent in transparency, and has the outstanding ultraviolet-shielding property. Further, it is apparent that the film has an excellent ultraviolet shielding property even in the wavelength region of UVA of 375 nm.
- the zinc oxide particles of Comparative Examples 1 to 3 were not sufficient in either transparency or ultraviolet shielding property, and these physical properties could not be made compatible. In particular, with the zinc oxide particles having a primary particle diameter of 0.02 ⁇ m in Comparative Example 3, sufficient ultraviolet light shielding properties could not be obtained in the UVA wavelength region of 375 nm.
- the zinc oxide particles had an irregular shape including a hexagonal plate shape with a primary particle size of 0.65 ⁇ m, and the hexagonal columnar oxidation with a primary particle size of the present invention of less than 0.5 ⁇ m. Zinc particles could not be obtained.
- the conditions of the comparative example 6 it became a rod-shaped zinc oxide particle with a large aspect ratio, and the hexagonal columnar zinc oxide particle with an aspect ratio of less than 2.5 of this invention was not able to be obtained.
- the hexagonal columnar zinc oxide particles of the present invention can be used as a component of cosmetics, heat dissipating fillers, heat dissipating resin compositions, heat dissipating greases and heat dissipating coating compositions.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Inorganic Chemistry (AREA)
- Epidemiology (AREA)
- Birds (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dermatology (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- General Chemical & Material Sciences (AREA)
- Cosmetics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Paints Or Removers (AREA)
Abstract
Description
本発明は、上述した六角柱状酸化亜鉛粒子からなることを特徴とする放熱性フィラーでもある。
本発明は、上述した六角柱状酸化亜鉛粒子を含有することを特徴とする放熱性樹脂組成物でもある。
本発明は、上述した六角柱状酸化亜鉛粒子を含有することを特徴とする放熱性グリースでもある。
本発明は、上述した六角柱状酸化亜鉛粒子を含有することを特徴とする放熱性塗料組成物でもある。
本発明は、一次粒子径が0.1μm以上0.5μm未満、アスペクト比が2.5未満である六角柱状酸化亜鉛粒子である。従来、0.1μm未満の酸化亜鉛粒子と、0.5μm以上の大きな酸化亜鉛粒子は知られていたが、この中間的な大きさの酸化亜鉛粒子についてはほとんど知られていなかった。更に、本発明においては、アスペクト比が2.5未満である六角柱状という形状を有するものである。
一次粒子径(μm)=[6/(Sg×ρ)]
(Sg(m2/g):比表面積、ρ(g/cm3):粒子の真比重)
の関係式に基づき求めた値である。
上記BET法による比表面積:Sgは、全自動BET比表面積測定装置Macsorb(Mountech社製)により測定し、その測定値を上記計算に用いた。また、粒子の真比重:ρは、酸化亜鉛の真比重の値である5.6を上記計算に用いた。
粒子径(μm)=[6/(Sg×ρ)]
(Sg(m2/g):比表面積、ρ(g/cm3):粒子の真比重)
なお、粒子の真比重:ρは、酸化亜鉛の真比重の値である5.6を上記計算に用いた。
すなわち、亜鉛塩水溶液中に上述した微粒子酸化亜鉛を分散させ、その状態で加熱し、結晶成長させることによって得られたものである。
上記方法によって製造された六角柱状酸化亜鉛粒子は、必要に応じて篩による分級を行うものであっても良い。篩による分級方法としては、湿式分級、乾式分級を挙げることができる。また、湿式粉砕、乾式粉砕等の処理を行ってもよい。
上記高級脂肪酸エステルとしては、例えば、パルミチン酸オクチルのような上記高級脂肪酸のアルキルエステル等を挙げることができる。
上記金属石ケンとしては、例えば、ステアリン酸アルミニウム、ラウリン酸アルミニウム等の上記高級脂肪酸の金属塩等を挙げることができる。金属石ケンを構成する金属種は特に限定されず、例えば、アルミニウム、リチウム、マグネシウム、カルシウム、ストロンチウム、バリウム、亜鉛、スズ等を挙げることができる。
上記アルカノールアミンとしては、例えば、ジエタノールアミン、ジプロパノールアミン、トリエタノールアミン、トリプロパノールアミン等を挙げることができる。
FINEX-50(堺化学工業社製 粒子径0.02μm)80gを、酢酸亜鉛二水和物(細井化学工業社製 酢酸亜鉛)66.51gを水に溶解して酢酸亜鉛二水和物としての濃度が0.25mol/lとなるよう調製した酢酸亜鉛水溶液1200mlにリパルプしスラリーとした。続いて、そのスラリーを攪拌しながら60分間で100℃に昇温し、攪拌しながら100℃で7時間熟成した。熟成後、ろ過、水洗した。続いて、得られた固形物を水3リットルにリパルプしてスラリーとし、攪拌しながら60分間で100℃に昇温し、攪拌しながら100℃で30分間加熱洗浄した。加熱洗浄後、ろ過、水洗し、110℃で12時間乾燥することにより、一次粒子径が0.10μmの六角柱状酸化亜鉛粒子を得た。得られた粒子のサイズ・形態を透過型電子顕微鏡(TEM、JEM-1200EX II、日本電子社製)で観察した。得られた電子顕微鏡写真を図1に示した。更に高倍率での電子顕微鏡写真を図2に示した。また、得られた粒子のX線回折のスペクトルを図3に示した。また、得られた粒子の物性、及び塗膜の物性の評価結果を表1に示した。
SF-15(堺化学工業社製 粒子径0.08μm)80gを、酢酸亜鉛二水和物(細井化学工業社製 酢酸亜鉛)133.02gを水に溶解して酢酸亜鉛二水和物としての濃度が0.5mol/lとなるよう調製した酢酸亜鉛水溶液1200mlにリパルプしスラリーとした。続いて、そのスラリーを攪拌しながら42分間で70℃に昇温し、攪拌しながら70℃で3時間熟成した。熟成後、ろ過、水洗した。続いて、得られた固形物を水3リットルにリパルプしてスラリーとし、攪拌しながら42分間で70℃に昇温し、攪拌しながら70℃で30分間加熱洗浄した。加熱洗浄後、ろ過、水洗し、110℃で12時間乾燥することにより、一次粒子径が0.19μmの六角柱状酸化亜鉛粒子を得た。得られた粒子のサイズ・形態を透過型電子顕微鏡(TEM、JEM-1200EX II、日本電子社製)で観察した。得られた電子顕微鏡写真を図4に示した。更に高倍率での電子顕微鏡写真を図5に示した。また、得られた粒子の物性、及び塗膜の物性の評価結果を表1に示した。
SF-15(堺化学工業社製 粒子径0.08μm)80gを、酢酸亜鉛二水和物(細井化学工業社製 酢酸亜鉛)106.42gを水に溶解して酢酸亜鉛二水和物としての濃度が0.4mol/lとなるよう調製した酢酸亜鉛水溶液1200mlにリパルプしスラリーとした。続いて、そのスラリーを攪拌しながら42分間で70℃に昇温し、攪拌しながら70℃で5時間熟成した。熟成後、ろ過、水洗した。続いて、得られた固形物を水3リットルにリパルプしてスラリーとし、攪拌しながら42分間で70℃に昇温し、攪拌しながら70℃で30分間加熱洗浄した。加熱洗浄後、ろ過、水洗し、110℃で12時間乾燥することにより、一次粒子径が0.13μmの六角柱状酸化亜鉛粒子を得た。得られた粒子のサイズ・形態を透過型電子顕微鏡(TEM、JEM-1200EX II、日本電子社製)で観察した。得られた電子顕微鏡写真を図6に示した。更に高倍率での電子顕微鏡写真を図7に示した。また、得られた粒子のサイズ・形態を走査型電子顕微鏡(SEM、JSM-7000F、日本電子社製)で観察した。得られた電子顕微鏡写真を図8に示した。また、得られた粒子のX線回折のスペクトルを図9に示した。また、得られた粒子の物性、及び塗膜の物性の評価結果を表1に示した。
SF-15(堺化学工業社製 粒子径0.08μm)80gを、酢酸亜鉛二水和物(細井化学工業社製 酢酸亜鉛)106.42gを水に溶解して酢酸亜鉛二水和物としての濃度が0.4mol/lとなるよう調製した酢酸亜鉛水溶液1200mlにリパルプしスラリーとした。続いて、そのスラリーを攪拌しながら54分間で90℃に昇温し、攪拌しながら90℃で7時間熟成した。熟成後、ろ過、水洗した。続いて、得られた固形物を水3リットルにリパルプしてスラリーとし、攪拌しながら54分間で90℃に昇温し、攪拌しながら90℃で30分間加熱洗浄した。加熱洗浄後、ろ過、水洗し、110℃で12時間乾燥することにより、一次粒子径が0.15μmの六角柱状酸化亜鉛粒子を得た。得られた粒子のサイズ・形態を透過型電子顕微鏡(TEM、JEM-1200EX II、日本電子社製)で観察した。得られた電子顕微鏡写真を図10に示した。更に高倍率での電子顕微鏡写真を図11に示した。また、得られた粒子の物性、及び塗膜の物性の評価結果を表1に示した。
FINEX-30(堺化学工業社製 粒子径0.04μm)80gを、酢酸亜鉛二水和物(細井化学工業社製 酢酸亜鉛)106.42gを水に溶解して酢酸亜鉛二水和物としての濃度が0.4mol/lとなるよう調製した酢酸亜鉛水溶液1200mlにリパルプしスラリーとした。続いて、そのスラリーを攪拌しながら42分間で70℃に昇温し、攪拌しながら70℃で3時間熟成した。熟成後、ろ過、水洗した。続いて、得られた固形物を水3リットルにリパルプしてスラリーとし、攪拌しながら42分間で70℃に昇温し、攪拌しながら70℃で30分間加熱洗浄した。加熱洗浄後、ろ過、水洗し、110℃で12時間乾燥することにより、一次粒子径が0.11μmの六角柱状酸化亜鉛粒子を得た。得られた粒子のサイズ・形態を透過型電子顕微鏡(TEM、JEM-1200EX II、日本電子社製)で観察した。得られた電子顕微鏡写真を図12に示した。更に高倍率での電子顕微鏡写真を図13に示した。また、得られた粒子の物性、及び塗膜の物性の評価結果を表1に示した。
微細酸化亜鉛(堺化学工業社製 粒子径0.11μm)について実施例と同様の評価を行った。電子顕微鏡写真を図14に示した。また、得られた粒子の物性、及び塗膜の物性の評価結果を表1に示した。
FINEX-50(堺化学工業社製 粒子径0.02μm)10gを、アルミナ製るつぼ(縦・横・高さ=100mm・100mm・35mm)に入れ、電気マッフル炉(東洋製作所社製)で525℃で2時間静置焼成することにより、一次粒子径が0.10μmの不定形の酸化亜鉛粒子を得た。得られた粒子のサイズ・形態を透過型電子顕微鏡(TEM、JEM-1200EX II、日本電子社製)で観察した。得られた電子顕微鏡写真を図15に示した。また、得られた粒子の物性、及び塗膜の物性の評価結果を表1に示した。
FINEX-50(堺化学工業社製 粒子径0.02μm)について実施例と同様の評価を行った。電子顕微鏡写真を図16に示した。また、得られた粒子の物性、及び塗膜の物性の評価結果を表1に示した。
FINEX-50(堺化学工業社製 粒子径0.02μm)80gを、酢酸亜鉛二水和物(細井化学工業社製 酢酸亜鉛)133.02gを水に溶解して酢酸亜鉛二水和物としての濃度が0.5mol/lとなるよう調製した酢酸亜鉛水溶液1200mlにリパルプしスラリーとした。続いて、そのスラリーを攪拌しながら42分間で70℃に昇温し、攪拌しながら70℃で3時間熟成した。熟成後、直ちに急冷した後、ろ過、水洗した。続いて、得られた固形物を水3リットルにリパルプしてスラリーとし、攪拌しながら42分間で70℃に昇温し、攪拌しながら70℃で30分間加熱洗浄した。加熱洗浄後、ろ過、水洗し、110℃で12時間乾燥することにより、一次粒子径が0.11μmの六角板状酸化亜鉛粒子を得た。得られた粒子のサイズ・形態を透過型電子顕微鏡(TEM、JEM-1200EX II、日本電子社製)で観察した。得られた電子顕微鏡写真を図17に示した。また、得られた粒子の物性、及び塗膜の物性の評価結果を表1に示した。
SF-15(堺化学工業社製 粒子径0.08μm)80gを、酢酸亜鉛二水和物(細井化学工業社製 酢酸亜鉛)266.05gを水に溶解して酢酸亜鉛二水和物としての濃度が1.0mol/lとなるよう調製した酢酸亜鉛水溶液1200mlにリパルプしスラリーとした。続いて、そのスラリーを攪拌しながら54分間で90℃に昇温し、攪拌しながら90℃で7時間熟成した。熟成後、ろ過、水洗した。続いて、得られた固形物を水3リットルにリパルプしてスラリーとし、攪拌しながら54分間で90℃に昇温し、攪拌しながら90℃で30分間加熱洗浄した。加熱洗浄後、ろ過、水洗し、110℃で12時間乾燥することにより、一次粒子径が0.65μmの一部六角板状形状を含む不定形状の酸化亜鉛粒子を得た。得られた粒子のサイズ・形態を透過型電子顕微鏡(TEM、JEM-1200EX II、日本電子社製)で観察した。得られた電子顕微鏡写真を図18に示した。また、得られた粒子の物性、及び塗膜の物性の評価結果を表1に示した。
SF-15(堺化学工業社製 粒子径0.08μm)80gを、酢酸亜鉛二水和物(細井化学工業社製 酢酸亜鉛)53.21gを水に溶解して酢酸亜鉛二水和物としての濃度が0.2mol/lとなるよう調製した酢酸亜鉛水溶液1200mlにリパルプしスラリーとした。続いて、そのスラリーを攪拌しながら42分間で70℃に昇温し、攪拌しながら70℃で3時間熟成した。熟成後、ろ過、水洗した。続いて、得られた固形物を水3リットルにリパルプしてスラリーとし、攪拌しながら42分間で70℃に昇温し、攪拌しながら70℃で30分間加熱洗浄した。加熱洗浄後、ろ過、水洗し、110℃で12時間乾燥することにより、一次粒子径が0.22μmのロッド状の酸化亜鉛粒子を得た。得られた粒子のサイズ・形態を透過型電子顕微鏡(TEM、JEM-1200EX II、日本電子社製)で観察した。得られた電子顕微鏡写真を図19に示した。また、得られた粒子の物性、及び塗膜の物性の評価結果を表1に示した。
図3、図9に示すX線回折のスペクトル、及び表1における得られた粒子の組成は、銅管球をもつX線回折装置UltimaIII(リガク社製)により分析した結果を示したものである。
実施例の六角柱状酸化亜鉛粒子のアスペクト比は、上述した測定方法によって測定を行った。
比較例における粒子形状が不定形の酸化亜鉛粒子のアスペクト比については、透過型電子顕微鏡(TEM、JEM-1200EX II、日本電子社製)写真の2000~50000倍の視野において、不定形の酸化亜鉛粒子の長径と、長径の中心を通る短径を計測し、長径と短径の長さの比;長径/短径を求める。そのようにしてTEM写真内の不定形の酸化亜鉛粒子250個について長径/短径を計測し、その累積分布の平均値をアスペクト比として求めたものである。不定形の酸化亜鉛粒子のアスペクト比の計測方法について図21に示した。
また、比較例における粒子形状が六角板状の酸化亜鉛粒子のアスペクト比は、透過型電子顕微鏡(TEM、JEM-1200EX
II、日本電子社製)写真、又は走査型電子顕微鏡(SEM、JSM-5600、日本電子社製)写真の2000~50000倍の視野において、六角板状酸化亜鉛粒子の六角形状面が手前を向いている粒子についてはその定方向径(粒子を挟む一定方向の二本の平行線の間隔;画像上の六角形状面が手前を向いている粒子について、一定方向で測定した)で定義される粒子径(μm)を粒子250個分計測した平均値をL、六角板状酸化亜鉛粒子の側面が手前を向いている粒子(長方形に見える粒子)についてはその厚み(μm)(長方形の短い方の辺の長さ)を粒子250個分計測した平均値をTとしたとき、それらの値の比;L/Tとして求めた値である。上記アスペクト比の測定方法については、図22を添付した。
本明細書において、D50(μm)、D90(μm)及びD10(μm)は、動的光散乱式粒子径分布測定装置 ナノトラックUPA-UT(日機装社製)によって測定した値である。実施例、比較例の酸化亜鉛粒子を水に分散し、酸化亜鉛の屈折率を1.95、水の屈折率を1.309として測定を行った。D50(μm)とは、体積基準での50%積算粒径、D90(μm)とは、体積基準での90%積算粒径、D10(μm)とは、体積基準での10%積算粒径を意味する。粒度分布のシャープさの指標として、D90/D10の比を算出する。この値が大きい程粒度分布がブロードであることを意味し、この値が小さい程粒度分布がシャープであることを意味する。
上記実施例、比較例で得られる酸化亜鉛粒子2g、ワニス10g(アクリディック A-801-P DIC社製)、酢酸ブチル5g(試薬特級 和光純薬工業社製)、キシレン5g(純正特級 純正化学社製)、ガラスビーズ38g(1.5mm ポッターズ・バロティーニ社製)を容積75mlのマヨネーズ瓶に入れ、良くかき混ぜた後、ペイントコンディショナー5410型(RED DEVIL社製)に固定し、90分間振動を与えて分散処理することにより塗料を作成した。次に、作成した塗料をスライドガラス(縦・横・厚み=76mm・26mm・0.8~1.0mm 松浪硝子工業社製)の上に少量滴下し、バーコーター(No.579 ROD No.6 安田精機製作所社製)で塗膜を作成した。作成した塗膜を20℃で12時間乾燥した後、全光線透過率1、全光線透過率2、全光線透過率3、平行光線透過率1、平行光線透過率2の測定に用いた。
本明細書において、全光線透過率1(%)、全光線透過率2(%)、全光線透過率3(%)及び平行光線透過率1(%)、平行光線透過率2(%)は、作成した塗膜を分光光度計V-570(日本分光社製)で測定した値である。なお、全光線透過率1(%)の値は波長310nmにおける全光線透過率の値、全光線透過率2(%)の値は波長350nmにおける全光線透過率の値、全光線透過率3(%)の値は波長375nmにおける全光線透過率の値、平行光線透過率1(%)の値は波長500nmにおける平行光線透過率の値、平行光線透過率2(%)の値は波長700nmにおける平行光線透過率の値である。全光線透過率1(%)の値が小さい程、UVBの波長の紫外線に対する紫外線遮蔽効果が高いことを意味し、全光線透過率2(%)と全光線透過率3(%)の値が小さい程、UVAの波長の紫外線に対する紫外線遮蔽効果が高いことを意味する。特に、全光線透過率3(%)の値が小さい場合、UVAの波長の紫外線に対する遮蔽領域がより広域に渡っていることを意味する。また、平行光線透過率1(%)、平行光線透過率2(%)の値が大きい程、可視光透明性が高いことを意味する。
Claims (9)
- 一次粒子径が0.1μm以上0.5μm未満、アスペクト比が2.5未満である六角柱状酸化亜鉛粒子。
- シードとなる微粒子酸化亜鉛を、亜鉛塩を溶解した水溶液中で熟成することで得られたものである請求項1に記載の六角柱状酸化亜鉛粒子。
- 粒度分布におけるD90/D10が2.4以下となる請求項1又は2に記載の六角柱状酸化亜鉛粒子。
- シードとなる微粒子酸化亜鉛を、亜鉛塩を溶解した水溶液中で熟成する工程を含む請求項1、2又は3記載の酸化亜鉛粒子の製造方法。
- 請求項1、2又は3に記載の六角柱状酸化亜鉛粒子を含有することを特徴とする化粧料。
- 請求項1、2又は3に記載の六角柱状酸化亜鉛粒子からなることを特徴とする放熱性フィラー。
- 請求項1、2又は3に記載の六角柱状酸化亜鉛粒子を含有することを特徴とする放熱性樹脂組成物。
- 請求項1、2又は3に記載の六角柱状酸化亜鉛粒子を含有することを特徴とする放熱性グリース。
- 請求項1、2又は3に記載の六角柱状酸化亜鉛粒子を含有することを特徴とする放熱性塗料組成物。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12776648.3A EP2703351B1 (en) | 2011-04-28 | 2012-04-26 | Hexagonal-cylinder-shaped zinc oxide particles, production method for same, and cosmetic material, heat-dissipating filler, heat-dissipating resin composition, heat-dissipating grease, and heat-dissipating coating composition having same blended therein |
JP2013512449A JP5907167B2 (ja) | 2011-04-28 | 2012-04-26 | 六角柱状酸化亜鉛粒子、その製造方法、並びに、それを配合した化粧料、放熱性フィラー、放熱性樹脂組成物、放熱性グリース及び放熱性塗料組成物 |
CN201280013496.5A CN103459318B (zh) | 2011-04-28 | 2012-04-26 | 六方柱状氧化锌颗粒、其制造方法、以及混配有该颗粒的化妆料、散热性填料、散热性树脂组合物、散热性脂膏和散热性涂料组合物 |
ES12776648T ES2736274T3 (es) | 2011-04-28 | 2012-04-26 | Partículas de óxido de zinc en forma de cilindro hexagonal, procedimiento de producción para las mismas, y material cosmético, relleno disipador de calor, composición de resina disipadora de calor, grasa disipadora de calor y composición de revestimiento disipadora de calor que contienen la misma mezcla |
US14/113,108 US9404195B2 (en) | 2011-04-28 | 2012-04-26 | Hexagonal prism-shaped zinc oxide particles, method for production of the same, and cosmetic, heat releasing filler, heat releasing resin composition, heat releasing grease, and heat releasing coating composition comprising the same |
CA2834233A CA2834233C (en) | 2011-04-28 | 2012-04-26 | Hexagonal prism-shaped zinc oxide particles and method for production of the same |
KR1020137025819A KR101888864B1 (ko) | 2011-04-28 | 2012-04-26 | 육각주상 산화아연 입자, 그 제조 방법, 및 그것을 배합한 화장료, 방열성 필러, 방열성 수지 조성물, 방열성 그리스 및 방열성 도료 조성물 |
US14/062,354 US9120681B2 (en) | 2011-04-28 | 2013-10-24 | Method for production of zinc oxide particles |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011101022 | 2011-04-28 | ||
JP2011-101022 | 2011-04-28 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/061282 Continuation-In-Part WO2012147888A1 (ja) | 2011-04-28 | 2012-04-26 | 酸化亜鉛粒子、その製造方法、化粧料、放熱性フィラー、放熱性樹脂組成物、放熱性グリース及び放熱性塗料組成物 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/061280 Continuation-In-Part WO2012147886A1 (ja) | 2011-04-28 | 2012-04-26 | 六角板状酸化亜鉛粒子、その製造方法、それを配合した化粧料、放熱性フィラー、放熱性樹脂組成物、放熱性グリース及び放熱性塗料組成物 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012147887A1 true WO2012147887A1 (ja) | 2012-11-01 |
Family
ID=47072402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/061281 WO2012147887A1 (ja) | 2011-04-28 | 2012-04-26 | 六角柱状酸化亜鉛粒子、その製造方法、並びに、それを配合した化粧料、放熱性フィラー、放熱性樹脂組成物、放熱性グリース及び放熱性塗料組成物 |
Country Status (9)
Country | Link |
---|---|
US (1) | US9404195B2 (ja) |
EP (1) | EP2703351B1 (ja) |
JP (1) | JP5907167B2 (ja) |
KR (1) | KR101888864B1 (ja) |
CN (1) | CN103459318B (ja) |
CA (1) | CA2834233C (ja) |
ES (1) | ES2736274T3 (ja) |
TW (2) | TWI534090B (ja) |
WO (1) | WO2012147887A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014148568A (ja) * | 2013-01-31 | 2014-08-21 | Ishihara Sangyo Kaisha Ltd | 放熱性組成物 |
JP2014148427A (ja) * | 2013-01-31 | 2014-08-21 | Ishihara Sangyo Kaisha Ltd | 絶縁性放熱フィラー及びその製造方法 |
WO2015098945A1 (ja) | 2013-12-24 | 2015-07-02 | 堺化学工業株式会社 | 酸化セリウム被覆酸化亜鉛粒子、その製造方法、紫外線遮蔽剤及び化粧料 |
WO2015098993A1 (ja) | 2013-12-27 | 2015-07-02 | 堺化学工業株式会社 | 酸化亜鉛粒子、それらの製造方法、紫外線遮蔽剤及び化粧料 |
JP2015520757A (ja) * | 2012-05-15 | 2015-07-23 | ビーエーエスエフ エスイー | 製剤容易な酸化亜鉛粉末 |
US20160324742A1 (en) * | 2013-12-27 | 2016-11-10 | Sakai Chemical Industry Co., Ltd. | Zinc oxide particles, production method for same, ultraviolet ray shielding agent, and cosmetic material |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2834229C (en) * | 2011-04-28 | 2019-02-19 | Sakai Chemical Industry Co., Ltd. | Hexagonal plate-shaped zinc oxide particles and method for production of the same |
US9120681B2 (en) | 2011-04-28 | 2015-09-01 | Sakai Chemical Industry Co., Ltd. | Method for production of zinc oxide particles |
TWI452015B (zh) * | 2011-04-28 | 2014-09-11 | Sakai Chemical Industry Co | Zinc oxide particles, a manufacturing method thereof, a cosmetic, an exoergic filler, heat-dissipating resin composition, heat radiation grease and exoergic coating compositions |
CN105960379B (zh) * | 2014-02-07 | 2018-04-17 | 堺化学工业株式会社 | 六方板状氧化锌颗粒、其制造方法、化妆料、填料、树脂组合物、红外线反射材料和涂料组合物 |
PL3472234T3 (pl) | 2016-06-15 | 2021-07-19 | Quarzwerke Gmbh | Wypełnione tworzywo sztuczne |
EP3854753A4 (en) | 2018-09-20 | 2021-11-17 | Fujimi Incorporated | WHITE PIGMENT FOR COSMETICS AND COSMETICS |
US11672744B2 (en) * | 2020-07-02 | 2023-06-13 | Nanophase Technologies Corporation | Zinc oxide particles, photostable UV filters, and methods of use thereof |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03183620A (ja) | 1989-12-12 | 1991-08-09 | Sumitomo Cement Co Ltd | 酸化亜鉛および化粧料 |
JPH11302015A (ja) | 1998-02-20 | 1999-11-02 | Sakai Chem Ind Co Ltd | 表面活性を抑制した酸化亜鉛粒子組成物、その製造方法及びその組成物を含有する化粧料 |
JP2008230895A (ja) * | 2007-03-20 | 2008-10-02 | National Institute Of Advanced Industrial & Technology | ZnOウィスカー、ZnOウィスカー膜及びそれらの作製方法 |
JP2008254992A (ja) | 2007-04-09 | 2008-10-23 | Ishihara Sangyo Kaisha Ltd | 酸化亜鉛及びその製造方法並びにそれを用いた化粧料 |
WO2010050430A1 (ja) * | 2008-10-27 | 2010-05-06 | 国立大学法人名古屋工業大学 | 柱状ZnO粒子の製造方法及びそれによって得られた柱状ZnO粒子 |
WO2011043207A1 (ja) * | 2009-10-07 | 2011-04-14 | 堺化学工業株式会社 | 酸化亜鉛粒子、その製造方法、放熱性フィラー、放熱性樹脂組成物、放熱性グリース及び放熱性塗料組成物 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5093099A (en) * | 1987-11-16 | 1992-03-03 | Kao Corporation | Flaky powder of zinc oxide and its composition for external use |
JP4767409B2 (ja) * | 2000-12-27 | 2011-09-07 | モメンティブ・パフォーマンス・マテリアルズ・ジャパン合同会社 | 放熱グリース |
JP4807569B2 (ja) * | 2006-02-27 | 2011-11-02 | 国立大学法人高知大学 | 酸化亜鉛粉末およびその製造方法 |
US20090017303A1 (en) * | 2007-06-12 | 2009-01-15 | Fas Alliances, Inc. | Zinc oxide having enhanced photocatalytic activity |
JP2009096656A (ja) * | 2007-10-15 | 2009-05-07 | National Institute Of Advanced Industrial & Technology | ZnOロッドアレイ及びその作製方法 |
JP5398134B2 (ja) * | 2007-11-15 | 2014-01-29 | 住友金属鉱山株式会社 | 表面処理酸化亜鉛微粒子の製造方法、表面処理酸化亜鉛微粒子、その分散液体および分散固体、並びに酸化亜鉛微粒子被覆基材 |
US8435485B2 (en) * | 2008-10-28 | 2013-05-07 | Sakai Chemical Industry Co., Ltd. | Method for producing zinc oxide using ammonium bromide, exoergic filler, resin composition, exoergic grease and exoergic coating composition comprising the zinc oxide |
CN102395532B (zh) * | 2009-04-22 | 2014-03-26 | 协和化学工业株式会社 | 柱状氧化锌粒子及其制造方法 |
US8399092B2 (en) * | 2009-10-07 | 2013-03-19 | Sakai Chemical Industry Co., Ltd. | Zinc oxide particle having high bulk density, method for producing it, exoergic filler, exoergic resin composition, exoergic grease and exoergic coating composition |
US20110081548A1 (en) * | 2009-10-07 | 2011-04-07 | Sakai Chemical Industry Co., Ltd. | Zinc oxide particle, method for producing it, exoergic filler, exoergic resin composition, exoergic grease and exoergic coating composition |
-
2012
- 2012-04-26 US US14/113,108 patent/US9404195B2/en active Active
- 2012-04-26 JP JP2013512449A patent/JP5907167B2/ja active Active
- 2012-04-26 TW TW101114869A patent/TWI534090B/zh active
- 2012-04-26 EP EP12776648.3A patent/EP2703351B1/en active Active
- 2012-04-26 TW TW105110504A patent/TWI546261B/zh active
- 2012-04-26 CA CA2834233A patent/CA2834233C/en not_active Expired - Fee Related
- 2012-04-26 ES ES12776648T patent/ES2736274T3/es active Active
- 2012-04-26 KR KR1020137025819A patent/KR101888864B1/ko active IP Right Grant
- 2012-04-26 WO PCT/JP2012/061281 patent/WO2012147887A1/ja active Application Filing
- 2012-04-26 CN CN201280013496.5A patent/CN103459318B/zh active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03183620A (ja) | 1989-12-12 | 1991-08-09 | Sumitomo Cement Co Ltd | 酸化亜鉛および化粧料 |
JPH11302015A (ja) | 1998-02-20 | 1999-11-02 | Sakai Chem Ind Co Ltd | 表面活性を抑制した酸化亜鉛粒子組成物、その製造方法及びその組成物を含有する化粧料 |
JP2008230895A (ja) * | 2007-03-20 | 2008-10-02 | National Institute Of Advanced Industrial & Technology | ZnOウィスカー、ZnOウィスカー膜及びそれらの作製方法 |
JP2008254992A (ja) | 2007-04-09 | 2008-10-23 | Ishihara Sangyo Kaisha Ltd | 酸化亜鉛及びその製造方法並びにそれを用いた化粧料 |
WO2010050430A1 (ja) * | 2008-10-27 | 2010-05-06 | 国立大学法人名古屋工業大学 | 柱状ZnO粒子の製造方法及びそれによって得られた柱状ZnO粒子 |
WO2011043207A1 (ja) * | 2009-10-07 | 2011-04-14 | 堺化学工業株式会社 | 酸化亜鉛粒子、その製造方法、放熱性フィラー、放熱性樹脂組成物、放熱性グリース及び放熱性塗料組成物 |
Non-Patent Citations (1)
Title |
---|
S.P.GARCIA ET AL.: "Controlling the Morphology of Zinc Oxide Nanorods Crystallized from Aqueous Solutions: The Effect of Crystal Growth Modifiers on Aspect Ratio", CHEMISTRY OF MATERIALS, vol. 19, no. 16, 7 August 2008 (2008-08-07), pages 4016 - 4022, XP055124288 * |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015520757A (ja) * | 2012-05-15 | 2015-07-23 | ビーエーエスエフ エスイー | 製剤容易な酸化亜鉛粉末 |
JP2014148568A (ja) * | 2013-01-31 | 2014-08-21 | Ishihara Sangyo Kaisha Ltd | 放熱性組成物 |
JP2014148427A (ja) * | 2013-01-31 | 2014-08-21 | Ishihara Sangyo Kaisha Ltd | 絶縁性放熱フィラー及びその製造方法 |
WO2015098945A1 (ja) | 2013-12-24 | 2015-07-02 | 堺化学工業株式会社 | 酸化セリウム被覆酸化亜鉛粒子、その製造方法、紫外線遮蔽剤及び化粧料 |
WO2015098993A1 (ja) | 2013-12-27 | 2015-07-02 | 堺化学工業株式会社 | 酸化亜鉛粒子、それらの製造方法、紫外線遮蔽剤及び化粧料 |
US20160324742A1 (en) * | 2013-12-27 | 2016-11-10 | Sakai Chemical Industry Co., Ltd. | Zinc oxide particles, production method for same, ultraviolet ray shielding agent, and cosmetic material |
US20160331650A1 (en) * | 2013-12-27 | 2016-11-17 | Sakai Chemical Industry Co., Ltd. | Zinc oxide particle, method for producing the same, ultraviolet shielding agent, and cosmetic |
EP3088362A4 (en) * | 2013-12-27 | 2017-06-21 | Sakai Chemical Industry Co., Ltd. | Zinc oxide particles, production method for same, ultraviolet ray shielding agent, and cosmetic material |
US9775787B2 (en) * | 2013-12-27 | 2017-10-03 | Sakai Chemical Industry Co., Ltd. | Zinc oxide particle, method for producing the same, ultraviolet shielding agent, and cosmetic |
US9789037B2 (en) * | 2013-12-27 | 2017-10-17 | Sakai Chemical Industry Co., Ltd. | Zinc oxide particle, method for producing the same, ultraviolet shielding agent, and cosmetic |
TWI670235B (zh) * | 2013-12-27 | 2019-09-01 | 日商堺化學工業股份有限公司 | 氧化鋅粒子、其等之製造方法、紫外線遮蔽劑及化妝料 |
Also Published As
Publication number | Publication date |
---|---|
EP2703351A4 (en) | 2015-03-25 |
EP2703351A1 (en) | 2014-03-05 |
CA2834233C (en) | 2019-02-26 |
US20140058029A1 (en) | 2014-02-27 |
KR20140016311A (ko) | 2014-02-07 |
CN103459318B (zh) | 2015-10-14 |
KR101888864B1 (ko) | 2018-08-17 |
EP2703351B1 (en) | 2019-06-12 |
TWI534090B (zh) | 2016-05-21 |
CA2834233A1 (en) | 2012-11-01 |
US9404195B2 (en) | 2016-08-02 |
ES2736274T3 (es) | 2019-12-27 |
JP5907167B2 (ja) | 2016-04-20 |
TW201625486A (zh) | 2016-07-16 |
CN103459318A (zh) | 2013-12-18 |
TW201247549A (en) | 2012-12-01 |
TWI546261B (zh) | 2016-08-21 |
JPWO2012147887A1 (ja) | 2014-07-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5907166B2 (ja) | 六角板状酸化亜鉛粒子、その製造方法、それを配合した化粧料、放熱性フィラー、放熱性樹脂組成物、放熱性グリース及び放熱性塗料組成物 | |
JP5907167B2 (ja) | 六角柱状酸化亜鉛粒子、その製造方法、並びに、それを配合した化粧料、放熱性フィラー、放熱性樹脂組成物、放熱性グリース及び放熱性塗料組成物 | |
JP5182456B2 (ja) | 酸化亜鉛粒子、その製造方法、化粧料、放熱性フィラー、放熱性樹脂組成物、放熱性グリース及び放熱性塗料組成物 | |
JP5967087B2 (ja) | 丸み状酸化亜鉛粒子の製造方法 | |
JP5365763B1 (ja) | 板状集積型球状酸化亜鉛粒子、それらの製造方法、化粧料及び放熱性フィラー | |
JP5907248B2 (ja) | 炭酸亜鉛塩粒子、酸化亜鉛粒子、それらの製造方法、放熱性フィラー及び化粧料 | |
JP6065520B2 (ja) | 酸化亜鉛粒子の製造方法 | |
JP5954321B2 (ja) | 放射状酸化亜鉛粒子の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12776648 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2013512449 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 20137025819 Country of ref document: KR Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 2834233 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012776648 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14113108 Country of ref document: US |