JP7372143B2 - Hexagonal boron nitride powder and its manufacturing method, and cosmetics and its manufacturing method - Google Patents
Hexagonal boron nitride powder and its manufacturing method, and cosmetics and its manufacturing method Download PDFInfo
- Publication number
- JP7372143B2 JP7372143B2 JP2019234707A JP2019234707A JP7372143B2 JP 7372143 B2 JP7372143 B2 JP 7372143B2 JP 2019234707 A JP2019234707 A JP 2019234707A JP 2019234707 A JP2019234707 A JP 2019234707A JP 7372143 B2 JP7372143 B2 JP 7372143B2
- Authority
- JP
- Japan
- Prior art keywords
- boron nitride
- hexagonal boron
- nitride powder
- powder
- cosmetics
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 title claims description 118
- 239000002537 cosmetic Substances 0.000 title claims description 45
- 238000004519 manufacturing process Methods 0.000 title claims description 26
- 239000000843 powder Substances 0.000 claims description 40
- 229910052582 BN Inorganic materials 0.000 claims description 32
- 239000002994 raw material Substances 0.000 claims description 26
- 238000003756 stirring Methods 0.000 claims description 25
- 238000010304 firing Methods 0.000 claims description 15
- 238000005087 graphitization Methods 0.000 claims description 14
- -1 polyethylene terephthalate Polymers 0.000 claims description 13
- 238000001354 calcination Methods 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 9
- 239000012752 auxiliary agent Substances 0.000 claims description 8
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 7
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 7
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 6
- 229910052796 boron Inorganic materials 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 5
- 239000011812 mixed powder Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 claims 1
- 239000000047 product Substances 0.000 description 25
- 238000010438 heat treatment Methods 0.000 description 16
- 239000000203 mixture Substances 0.000 description 14
- 239000002245 particle Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 10
- 238000011156 evaluation Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 229910001873 dinitrogen Inorganic materials 0.000 description 6
- 230000005611 electricity Effects 0.000 description 6
- 239000004570 mortar (masonry) Substances 0.000 description 6
- 230000003068 static effect Effects 0.000 description 6
- 238000002441 X-ray diffraction Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 238000000746 purification Methods 0.000 description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 238000004220 aggregation Methods 0.000 description 4
- 230000002776 aggregation Effects 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 125000000524 functional group Chemical group 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000011164 primary particle Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 229910021538 borax Inorganic materials 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 2
- 229910052808 lithium carbonate Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 235000010339 sodium tetraborate Nutrition 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000001639 boron compounds Chemical class 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000000634 powder X-ray diffraction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 235000011182 sodium carbonates Nutrition 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Cosmetics (AREA)
Description
本開示は、六方晶窒化ホウ素粉末及びその製造方法、並びに化粧料及びその製造方法に関する。 The present disclosure relates to a hexagonal boron nitride powder and a method for producing the same, and a cosmetic and a method for producing the same.
窒化ホウ素は、潤滑性、高熱伝導性、及び絶縁性等を有しており、固体潤滑剤、離型剤、樹脂及びゴムの充填材、化粧料（化粧品ともいう）の原料、並びに耐熱性を有する絶縁性焼結体等、幅広い用途に利用されている。化粧料に配合される六方晶窒化ホウ素粉末の機能としては、化粧料への滑り性、伸び性、隠ぺい性の向上、及び、光沢性の付与等が挙げられる。特に、六方晶窒化ホウ素粉末は、同様の機能を有するタルク粉末及びマイカ粉末に比べて滑り性に優れているため、優れた滑り性が求められる化粧料に汎用されている。特許文献１では、滑り性を改善するために、せん断応力と加圧力の比を所定の数値範囲にすることが提案されている。 Boron nitride has lubricity, high thermal conductivity, and insulation properties, and is used as a solid lubricant, mold release agent, resin and rubber filler, raw material for cosmetics (also referred to as cosmetics), and has heat resistance. It is used in a wide range of applications, such as insulating sintered bodies. Functions of the hexagonal boron nitride powder blended into cosmetics include improving slipperiness, spreadability, and concealment properties of cosmetics, and imparting glossiness to the cosmetics. In particular, hexagonal boron nitride powder has superior slip properties compared to talc powder and mica powder, which have similar functions, and is therefore widely used in cosmetics that require excellent slip properties. Patent Document 1 proposes setting the ratio of shear stress to pressing force within a predetermined numerical range in order to improve slipperiness.
ところで、粉末には摩擦等の要因によって静電気が生じる場合がある。微粒体等の帯電量を測定する方法として、ファラデーケージの電圧を測定して、「帯電量＝静電容量×電圧」の式によって帯電量を求める技術が知られている。特許文献２では、ファラデーケージを用いた粉粒体の帯電量の測定において、帯電量を高感度に測定することが可能な測定装置が提案されている。 Incidentally, static electricity may be generated in powder due to factors such as friction. As a method for measuring the amount of charge of fine particles, etc., there is a known technique of measuring the voltage of a Faraday cage and determining the amount of charge using the formula "charge amount=capacitance×voltage". Patent Document 2 proposes a measuring device that can measure the amount of charge with high sensitivity in measuring the amount of charge of powder or granular material using a Faraday cage.
六方晶窒化ホウ素粉末は、粒子同士又は容器の内壁との摩擦に伴う静電気によって帯電し、凝集する場合がある。このように適度に凝集するとふわふわとした触感が得られ、化粧料の原料として好適であることが分かった。そこで、本開示では、触感に優れる六方晶窒化ホウ素粉末及びその製造方法を提供する。また、本開示では、上述の六方晶窒化ホウ素粉末を用いることによって、触感に優れる化粧料及びその製造方法を提供する。 Hexagonal boron nitride powder may become charged and aggregate due to static electricity caused by friction between particles or the inner wall of a container. It was found that proper aggregation gives a fluffy texture and is suitable as a raw material for cosmetics. Therefore, the present disclosure provides a hexagonal boron nitride powder with excellent tactility and a method for producing the same. Further, the present disclosure provides a cosmetic with excellent tactility and a method for producing the same by using the above-described hexagonal boron nitride powder.
本開示の一側面に係る六方晶窒化ホウ素粉末は、内径９０ｍｍ及び高さ１２０ｍｍであるポリエチレンテレフタレート製の容器に六方晶窒化ホウ素粉末を１０ｇ収容し、ポリテトラフルオロエチレン製の４枚羽根を有する直径６０ｍｍの攪拌翼を用いて、３００ｒｐｍで５分間攪拌したときの帯電量の絶対値が０．８ｎｃ／ｇ以上である。このような六方晶窒化ホウ素粉末は、粒子同士の摩擦、及び収容容器の内壁との摩擦等の要因によって帯電して凝集し、ふわふわ感を有する。このため、十分に優れた触感を有する。このような六方晶窒化ホウ素粉末を化粧料の原料として用いれば、十分に触感に優れる化粧料を得ることができる。 The hexagonal boron nitride powder according to one aspect of the present disclosure is prepared by storing 10 g of hexagonal boron nitride powder in a container made of polyethylene terephthalate having an inner diameter of 90 mm and a height of 120 mm, and having a diameter of 4 blades made of polytetrafluoroethylene. The absolute value of the charge amount when stirred for 5 minutes at 300 rpm using a 60 mm stirring blade is 0.8 nc/g or more. Such hexagonal boron nitride powder is charged and aggregated due to factors such as friction between particles and friction with the inner wall of the storage container, and has a fluffy feel. Therefore, it has a sufficiently excellent tactile feel. If such hexagonal boron nitride powder is used as a raw material for cosmetics, it is possible to obtain cosmetics with sufficiently excellent texture.
上記六方晶窒化ホウ素粉末は、上記帯電量の絶対値が２ｎｃ／ｇ未満であってよい。六方晶窒化ホウ素粉末の帯電量が大きくなり過ぎると化粧料の原料として用いたときに化粧料にざらざら感が生じる場合がある。これは、六方晶窒化ホウ素粉末が凝集し過ぎることによるものと考えられる。帯電量の絶対値が２ｎｃ／ｇ未満であることによって、ざらざら感を十分に低減することができる。 The hexagonal boron nitride powder may have an absolute value of the amount of charge of less than 2 nc/g. If the amount of charge of the hexagonal boron nitride powder becomes too large, the cosmetic may have a rough feel when used as a raw material for cosmetics. This is considered to be due to excessive aggregation of the hexagonal boron nitride powder. When the absolute value of the charge amount is less than 2 nc/g, the roughness can be sufficiently reduced.
上記六方晶窒化ホウ素粉末は、 ＪＩＳ Ｒ ９３０１－２－２：１９９９に基づいて測定される安息角が４０°以上、且つ６０°未満であってよい。これによって、一層ふわふわとした触感を得ることが可能となり、化粧料の原料として一層好適となる。 The hexagonal boron nitride powder may have an angle of repose of 40° or more and less than 60° as measured based on JIS R 9301-2-2:1999. This makes it possible to obtain a softer texture, making it more suitable as a raw material for cosmetics.
上記六方晶窒化ホウ素粉末は、化粧料の原料用であってよい。上記六方晶窒化ホウ素粉末は、帯電して凝集するため、化粧料の原料として用いることによって、化粧料の触感を向上することができる。 The hexagonal boron nitride powder may be used as a raw material for cosmetics. Since the hexagonal boron nitride powder is electrically charged and aggregates, the tactile feel of the cosmetic can be improved by using it as a raw material for cosmetics.
本開示の一側面に係る六方晶窒化ホウ素粉末の製造方法は、ホウ素を含む化合物の粉末と窒素を含む化合物の粉末を含有する原料粉末を、不活性ガス、アンモニアガス又はこれらの混合ガスの雰囲気中、６００～１３００℃で焼成して、六方晶窒化ホウ素を含む仮焼物を得る仮焼工程と、仮焼物と助剤とを含む混合粉末を、不活性ガス、アンモニアガス又はこれらの混合ガスの雰囲気中、１６００～１７５０℃の温度範囲への加熱と１００℃以下の温度範囲への冷却を複数回繰り返し行って、結晶化度が１．１～１．６である焼成物を得る焼成工程と、を有する。 A method for producing hexagonal boron nitride powder according to one aspect of the present disclosure includes raw material powder containing a boron-containing compound powder and a nitrogen-containing compound powder in an atmosphere of an inert gas, ammonia gas, or a mixed gas thereof. A calcination step in which a calcined product containing hexagonal boron nitride is obtained by firing at a temperature of 600 to 1300°C; A firing step in which heating to a temperature range of 1600 to 1750°C and cooling to a temperature range of 100°C or less are repeated multiple times in an atmosphere to obtain a fired product having a crystallinity of 1.1 to 1.6. , has.
上記製造方法は、焼成工程よりも低い温度で焼成する仮焼工程を有することによって、粒径が小さく結晶性の低い六方晶窒化ホウ素を形成することができる。焼成工程では、所定の雰囲気下、助剤を用いて１６００～１７５０℃への温度範囲への加熱と１００℃以下の温度範囲への冷却を複数回行い、焼成物の結晶化度を１．１～１．６としている。これによって、六方晶窒化ホウ素の結晶化を十分に進行させつつ、六方晶窒化ホウ素の一次粒子の表面における水酸基等の官能基が十分に維持された焼成物を得ることができる。このような焼成物を用いることによって、帯電し易い六方晶窒化ホウ素粉末を得ることができる。このような六方晶窒化ホウ素粉末は、静電気によって帯電して凝集するため、ふわふわ感を有する。このため、優れた触感を有する。このような六方晶窒化ホウ素粉末を化粧料の原料として用いれば、触感に優れる化粧料を得ることができる。 The above manufacturing method includes a calcination step in which firing is performed at a lower temperature than the calcination step, thereby making it possible to form hexagonal boron nitride with a small particle size and low crystallinity. In the firing process, heating to a temperature range of 1,600 to 1,750°C and cooling to a temperature range of 100°C or less are performed multiple times in a predetermined atmosphere using an auxiliary agent, and the crystallinity of the fired product is reduced to 1.1. ~1.6. As a result, it is possible to obtain a fired product in which functional groups such as hydroxyl groups on the surface of the primary particles of hexagonal boron nitride are sufficiently maintained while crystallization of the hexagonal boron nitride is sufficiently progressed. By using such a fired product, it is possible to obtain a hexagonal boron nitride powder that is easily charged. Such hexagonal boron nitride powder has a fluffy feel because it is electrostatically charged and aggregates. Therefore, it has an excellent tactile feel. If such hexagonal boron nitride powder is used as a raw material for cosmetics, cosmetics with excellent texture can be obtained.
上記製造方法では、焼成工程で得られる焼成物を粉砕、洗浄及び乾燥し、内径９０ｍｍ及び高さ１２０ｍｍであるポリエチレンテレフタレート製の容器に六方晶窒化ホウ素粉末を１０ｇ収容し、ポリテトラフルオロエチレン製の４枚羽根を有する直径６０ｍｍの攪拌翼を用いて、３００ｒｐｍで５分間攪拌したときの帯電量の絶対値が０．８ｎｃ／ｇ以上である六方晶窒化ホウ素粉末を得てもよい。上記六方晶窒化ホウ素粉末は、帯電量の絶対値が大きいため、粒子同士又は容器の内壁との摩擦によって発生する静電気によって十分に帯電して凝集する。このような六方晶窒化ホウ素粉末を化粧料の原料として用いれば、十分に触感に優れる化粧料を得ることができる。 In the above manufacturing method, the fired product obtained in the firing process is crushed, washed, and dried, and 10 g of hexagonal boron nitride powder is placed in a polyethylene terephthalate container with an inner diameter of 90 mm and a height of 120 mm. A hexagonal boron nitride powder having an absolute value of charge amount of 0.8 nc/g or more when stirred at 300 rpm for 5 minutes using a stirring blade having a diameter of 60 mm and having four blades may be obtained. Since the hexagonal boron nitride powder has a large absolute value of charge, it is sufficiently charged and aggregated by static electricity generated by friction between the particles or the inner wall of the container. If such hexagonal boron nitride powder is used as a raw material for cosmetics, it is possible to obtain cosmetics with sufficiently excellent texture.
本開示の一側面に係る化粧料は、上述の六方晶窒化ホウ素粉末を含む。上述の六方晶窒化ホウ素粉末は、粒子同士の摩擦、及び収容容器の内壁との摩擦等によって発生する静電気によって十分に帯電して凝集し、ふわふわ感を有する。したがって、このような六方晶窒化ホウ素粉末を含む化粧料は、十分に優れた触感を有する。 A cosmetic according to one aspect of the present disclosure includes the hexagonal boron nitride powder described above. The hexagonal boron nitride powder described above is sufficiently charged and aggregated by static electricity generated by friction between the particles and friction with the inner wall of the storage container, and has a fluffy feel. Therefore, a cosmetic containing such hexagonal boron nitride powder has a sufficiently excellent texture.
本開示の一側面に係る化粧料の製造方法は、上述のいずれかの製造方法で得られる六方晶窒化ホウ素粉末を原料として用いて化粧料を製造する。上述の製造方法で得られる六方晶窒化ホウ素粉末は、粒子同士の摩擦、及び収容容器の内壁との摩擦等によって発生する静電気によって帯電して凝集し、ふわふわ感を有する。したがって、このような六方晶窒化ホウ素粉末を含む化粧料は優れた触感を有する。 A method for producing a cosmetic according to one aspect of the present disclosure produces a cosmetic using hexagonal boron nitride powder obtained by any of the above-mentioned production methods as a raw material. The hexagonal boron nitride powder obtained by the above-mentioned manufacturing method is charged and aggregated by static electricity generated by friction between particles and friction with the inner wall of the container, and has a fluffy feel. Therefore, cosmetics containing such hexagonal boron nitride powder have an excellent texture.
本開示によれば、触感に優れる六方晶窒化ホウ素粉末及びその製造方法を提供することができる。また、本開示では、上述の六方晶窒化ホウ素粉末を用いることによって、触感に優れる化粧料及びその製造方法を提供することができる。 According to the present disclosure, it is possible to provide a hexagonal boron nitride powder with excellent tactility and a method for producing the same. Further, in the present disclosure, by using the above-described hexagonal boron nitride powder, it is possible to provide a cosmetic with excellent texture and a method for producing the same.
以下、本開示の実施形態を説明する。ただし、以下の実施形態は、本開示を説明するための例示であり、本開示を以下の内容に限定する趣旨ではない。 Embodiments of the present disclosure will be described below. However, the following embodiments are examples for explaining the present disclosure, and are not intended to limit the present disclosure to the following contents.
本実施形態の六方晶窒化ホウ素粉末は、図１に示す攪拌装置を用いて、３００ｒｐｍで５分間攪拌したときの帯電量の絶対値が０．８ｎｃ／ｇ以上である。これによって、粒子同士又は容器の内壁との摩擦によって発生する静電気で帯電し凝集する。したがって、ふわふわ感を有する。同様の観点から、上記帯電量の絶対値は、０．９ｎｃ／ｇ以上であってよく、１．０ｎｃ／ｇ以上であってもよい。 The hexagonal boron nitride powder of this embodiment has an absolute value of charge amount of 0.8 nc/g or more when stirred at 300 rpm for 5 minutes using the stirring device shown in FIG. As a result, the particles are charged with static electricity generated by friction with each other or with the inner wall of the container, and coagulate. Therefore, it has a fluffy feel. From the same viewpoint, the absolute value of the amount of charge may be 0.9 nc/g or more, or 1.0 nc/g or more.
上記帯電量は、六方晶窒化ホウ素粉末の過度な凝集を抑制し、化粧料の原料として用いたときにざらざら感が生じることを抑制する観点から、２ｎｃ／ｇ未満であってよく、１．５ｎｃ／ｇ未満であってもよい。 The above-mentioned charge amount may be less than 2 nc/g, and may be less than 1.5 nc/g, from the viewpoint of suppressing excessive aggregation of the hexagonal boron nitride powder and suppressing the occurrence of a rough feeling when used as a raw material for cosmetics. It may be less than /g.
図１の攪拌装置１００は、円筒部とその一端側を覆う底部とを有する有底円筒状のポリエチレンテレフタレート（ＰＥＴ）製の容器１０と、シャフト２２及びその先端に取り付けられた攪拌翼２４を有する攪拌機２０と、シャフト２２の上端側に回転モータ（不図示）と、を備える。回転モータは、例えばスリーワンモータであってよい。容器１０の内径Ｄは９０ｍｍであり、高さＨは１２０ｍｍである。容器１０の底部に１０ｇの六方晶窒化ホウ素粉末３０が収容され層状に堆積している。攪拌機２０の一部は、シャフト２２の長手方向が円筒部の中心軸方向に沿うようにして容器１０の内部に挿入されている。攪拌翼２４の下端と容器１０の底面との間隔ｈは５ｍｍである。
The stirring device 100 in FIG. 1 includes a bottomed cylindrical polyethylene terephthalate (PET)
図２は、攪拌翼２４の下面図である。シャフトの下端に取り付けられた攪拌翼２４は、容器１０の円筒部に向かって放射状に拡がるポリテトラフルオロエチレン（ＰＴＦＥ）製の４つの羽根２６（４枚羽根）を有する。攪拌翼２４の直径ｄは、６０ｍｍである。したがって、４つの羽根２６の各先端と容器１０との間隔は１５ｍｍである。
FIG. 2 is a bottom view of the
図１に示すように、攪拌翼２４を六方晶窒化ホウ素粉末３０内に配置した状態で攪拌機２０を起動し、３００ｒｐｍの回転数で５分間攪拌する。攪拌後、帯電量を、ファラデーケージを備える市販の粉体摩擦帯電量測定装置を用いて測定する。そのような測定装置としては、例えば、株式会社ナノシーズ製のＮＳ－Ｋ１００（製品名）が挙げられる。帯電量の正負及び大きさは、六方晶窒化ホウ素粉末の表面状態に依存すると考えられる。例えば、水酸基等の官能基が多くなると、帯電し易くなると考えられる。帯電量は、六方晶窒化ホウ素粉末を製造する際の焼成条件を変えることによって調整することができる。
As shown in FIG. 1, the
ＪＩＳ Ｒ ９３０１－２－２：１９９９に基づいて測定される、六方晶窒化ホウ素粉末の安息角は４０°以上、且つ６０°未満であってよい。このような安息角を有する六方晶窒化ホウ素粉末は、粒子同士が適度に付着することから、一層ふわふわとした触感を得ることが可能となり、化粧料の原料として一層好適となる。 The angle of repose of the hexagonal boron nitride powder, measured based on JIS R 9301-2-2:1999, may be 40° or more and less than 60°. Since the particles of hexagonal boron nitride powder having such an angle of repose adhere to each other appropriately, it is possible to obtain a fluffier texture, making it more suitable as a raw material for cosmetics.
本実施形態に係る六方晶窒化ホウ素は、凝集し易いため、ふわふわ感を有する。このため、化粧品の原料として好適に用いることができる。六方晶窒化ホウ素粉末を含む化粧料は、触感に優れる。すなわち、本開示は、六方晶窒化ホウ素を化粧料の原料として使用する使用方法も提供することができる。 The hexagonal boron nitride according to the present embodiment tends to aggregate, so it has a fluffy feel. Therefore, it can be suitably used as a raw material for cosmetics. Cosmetics containing hexagonal boron nitride powder have excellent texture. That is, the present disclosure can also provide a method of using hexagonal boron nitride as a raw material for cosmetics.
一実施形態に係る化粧料は、上述の六方晶窒化ホウ素粉末を含有する。この六方晶窒化ホウ素粉末は、静電気で帯電して凝集し、ふわふわ感を有する。このため、六方晶窒化ホウ素粉末を含む化粧料は触感に優れる。 A cosmetic according to one embodiment contains the above-described hexagonal boron nitride powder. This hexagonal boron nitride powder is electrostatically charged and aggregates, giving it a fluffy feel. Therefore, cosmetics containing hexagonal boron nitride powder have excellent texture.
化粧料としては、例えば、ファンデーション（パウダーファンデーション、リキッドファンデーション、クリームファンデーション）、フェイスパウダー、ポイントメイク、アイシャドー、アイライナー、マニュキュア、口紅、頬紅、及びマスカラ等が挙げられる。これらのうち、ファンデーション及びアイシャドーには、六方晶窒化ホウ素粉末が特に良く適合する。化粧料における六方晶窒化ホウ素粉末の含有量は、例えば０．１～７０質量％である。化粧料は公知の方法によって製造することができる。化粧料の製造方法は、例えば、六方晶窒化ホウ素粉末と他の原料とを配合して混合する工程を有する。 Examples of cosmetics include foundations (powder foundation, liquid foundation, cream foundation), face powder, point makeup, eye shadow, eyeliner, nail polish, lipstick, blush, mascara, and the like. Among these, hexagonal boron nitride powder is particularly well suited for foundations and eye shadows. The content of hexagonal boron nitride powder in the cosmetic is, for example, 0.1 to 70% by mass. Cosmetics can be manufactured by known methods. A method for producing cosmetics includes, for example, a step of blending and mixing hexagonal boron nitride powder and other raw materials.
一実施形態に係る六方晶窒化ホウ素粉末の製造方法は、ホウ素を含む化合物の粉末と窒素を含む化合物の粉末を含有する原料粉末を、不活性ガス雰囲気中、アンモニアガス雰囲気中、又はこれらの混合ガス雰囲気中、６００～１３００℃で焼成して、低結晶性の六方晶窒化ホウ素、及び非晶質の六方晶窒化ホウ素からなる群より選ばれる少なくとも一方を含む仮焼物を得る仮焼工程と、仮焼物と助剤とを含む混合粉末を、不活性ガス及び／又はアンモニアガスの雰囲気中、１６００～１７５０℃の温度範囲（温度範囲１）への加熱と１００℃以下の温度範囲への冷却（温度範囲２）を複数回繰り返して行って、結晶化度が１．１～１．５である焼成物を得る焼成工程と、焼成物を粉砕、洗浄、及び乾燥し、乾燥粉末を得る精製工程と、を有する。 A method for producing hexagonal boron nitride powder according to one embodiment includes raw material powder containing powder of a boron-containing compound and powder of a compound containing nitrogen in an inert gas atmosphere, an ammonia gas atmosphere, or a mixture thereof. A calcination step of obtaining a calcined product containing at least one selected from the group consisting of low-crystalline hexagonal boron nitride and amorphous hexagonal boron nitride by firing at 600 to 1300°C in a gas atmosphere; A mixed powder containing a calcined material and an auxiliary agent is heated to a temperature range of 1600 to 1750°C (temperature range 1) in an atmosphere of inert gas and/or ammonia gas, and cooled to a temperature range of 100°C or less ( A firing step in which temperature range 2) is repeated multiple times to obtain a fired product with a degree of crystallinity of 1.1 to 1.5, and a purification step in which the fired product is crushed, washed, and dried to obtain a dry powder. and has.
ホウ素を含む化合物としては、ホウ酸、酸化ホウ素及びホウ砂等が挙げられる。窒素を含む化合物としては、ジシアンジアミド、メラミン、及び尿素が挙げられる。ホウ素を含む化合物の粉末と窒素を含む化合物の粉末を含有する原料粉末におけるホウ素原子と窒素原子のモル比は、ホウ素原子：窒素原子＝２：８～８：２であってよく、３：７～７：３であってもよい。原料粉末は、上記化合物以外の成分を含んでもよい。例えば、助剤として炭酸リチウム及び炭酸ナトリウムなどの炭酸塩を含んでよい。また、炭素等の還元性物質を含んでよい。 Examples of compounds containing boron include boric acid, boron oxide, and borax. Compounds containing nitrogen include dicyandiamide , melamine, and urea. The molar ratio of boron atoms to nitrogen atoms in the raw material powder containing powder of a boron-containing compound and powder of a compound containing nitrogen may be boron atoms:nitrogen atoms=2:8 to 8:2, and 3:7. The ratio may be 7:3. The raw material powder may contain components other than the above-mentioned compounds. For example, carbonates such as lithium carbonate and sodium carbonate may be included as auxiliaries. Further, it may contain a reducing substance such as carbon.
上述の成分を含有する原料粉末を、例えば電気炉を用いて、窒素ガス、ヘリウムガス、又はアルゴンガス等の不活性雰囲気中、アンモニア雰囲気中、或いはこれらを混合した混合ガス雰囲気中で仮焼する。仮焼温度は、６００～１３００℃であってよく、８００～１２００℃であってよく、９００～１１００℃であってもよい。仮焼時間は、例えば０．５～５時間であってよく、１～４時間であってもよい。 The raw material powder containing the above-mentioned components is calcined in an inert atmosphere such as nitrogen gas, helium gas, or argon gas, an ammonia atmosphere, or a mixed gas atmosphere of these by using, for example, an electric furnace. . The calcination temperature may be 600 to 1300°C, 800 to 1200°C, or 900 to 1100°C. The calcination time may be, for example, 0.5 to 5 hours, or 1 to 4 hours.
仮焼によって得られる仮焼物は、低結晶性の六方晶窒化ホウ素、及び非晶質の六方晶窒化ホウ素からなる群より選ばれる少なくとも一方を含む。仮焼工程は、後述の焼成工程よりも低温で窒化ホウ素の反応を進行させる。このため、粒成長を抑制し、最終的に得られる窒化ホウ素粉末の粒径を小さくすることができる。また、六方晶窒化ホウ素粉末の比表面積を大きくすることができる。 The calcined material obtained by calcining contains at least one selected from the group consisting of low-crystalline hexagonal boron nitride and amorphous hexagonal boron nitride. In the calcination step, the reaction of boron nitride proceeds at a lower temperature than in the calcination step described below. Therefore, grain growth can be suppressed and the particle size of the ultimately obtained boron nitride powder can be reduced. Further, the specific surface area of the hexagonal boron nitride powder can be increased.
次に、得られた仮焼物と助剤とを配合して混合し、混合粉末を得る。助剤としては、ホウ酸ナトリウム等のホウ酸塩、並びに、炭酸ナトリウム、炭酸カルシウム及び炭酸リチウム等の炭酸塩が挙げられる。六方晶窒化ホウ素を含む仮焼物１００質量部に対する、助剤の配合量は２～２０質量部であってよく、２～８質量部であってもよい。このような混合粉末を、例えば電気炉中、窒素ガス、ヘリウムガス、又はアルゴンガス等の不活性雰囲気中、アンモニア雰囲気中、或いはこれらを含む混合ガス雰囲気中で焼成する。 Next, the obtained calcined product and an auxiliary agent are blended and mixed to obtain a mixed powder. Auxiliary agents include borates such as sodium borate, and carbonates such as sodium carbonate, calcium carbonate, and lithium carbonate. The blending amount of the auxiliary agent may be 2 to 20 parts by mass, or 2 to 8 parts by mass, based on 100 parts by mass of the calcined material containing hexagonal boron nitride. Such a mixed powder is fired, for example, in an electric furnace, in an inert atmosphere such as nitrogen gas, helium gas, or argon gas, in an ammonia atmosphere, or in a mixed gas atmosphere containing these.
焼成工程では、助剤の存在下、窒化ホウ素の生成及び結晶化が進行する。これによって、仮焼物に含まれる窒化ホウ素の結晶性を高めることができる。温度範囲１は、１６００～１７５０℃であり、１６５０～１７００℃であってもよい。温度範囲２は、０～１００℃であってよく、３０～１００℃であってもよい。温度範囲１への加熱と温度範囲２への冷却を例えば複数回行い、黒鉛化指数（ＧＩ）が１．１～１．６の焼成物を得る。このような焼成物では六方晶窒化ホウ素の結晶化が十分に進行している。また、加熱と冷却を繰り返し行っていることから、六方晶窒化ホウ素の一次粒子の表面において極性を有する水酸基等の官能基を十分に維持することができる。これによって、静電気で帯電し易い六方晶窒化ホウ素粉末を得ることができる。黒鉛化指数は、１．１～１．５であってよく、１．２～１．４であってよい。 In the firing step, the production and crystallization of boron nitride progress in the presence of an auxiliary agent. Thereby, the crystallinity of boron nitride contained in the calcined product can be improved. Temperature range 1 is 1600-1750°C, and may be 1650-1700°C. Temperature range 2 may be from 0 to 100°C, or may be from 30 to 100°C. Heating to temperature range 1 and cooling to temperature range 2 are performed, for example, multiple times to obtain a fired product with a graphitization index (GI) of 1.1 to 1.6. In such a fired product, the crystallization of hexagonal boron nitride has progressed sufficiently. Furthermore, since heating and cooling are repeated, it is possible to sufficiently maintain polar functional groups such as hydroxyl groups on the surface of the primary particles of hexagonal boron nitride. This makes it possible to obtain hexagonal boron nitride powder that is easily electrostatically charged. The graphitization index may be between 1.1 and 1.5, and between 1.2 and 1.4.
温度範囲１への加熱と温度範囲２への冷却を繰り返す回数は２回以上であってもよいし、２回～５回であってもよい。温度範囲１への加熱と温度範囲２への冷却を１サイクルとしたとき、１サイクルに所要する時間は、２～６時間であってもよい。 The number of times heating to temperature range 1 and cooling to temperature range 2 may be repeated may be two or more times, or may be from two to five times. When one cycle includes heating to temperature range 1 and cooling to temperature range 2, the time required for one cycle may be 2 to 6 hours.
温度範囲１が低くなり過ぎると、結晶化が十分に進行せず、黒鉛化指数（ＧＩ）が１．１～１．６の焼成物が得られ難くなる。このため、六方晶窒化ホウ素粉末の本来の性能が損なわれる場合がある。一方、温度範囲１が高くなり過ぎると、六方晶窒化ホウ素の一次粒子の表面において極性を有する水酸基等の官能基が消失し、帯電し難くなる。繰り返し数（サイクル数）が多くなり過ぎたときも同様の傾向にある。 If the temperature range 1 becomes too low, crystallization will not proceed sufficiently and it will be difficult to obtain a fired product with a graphitization index (GI) of 1.1 to 1.6. Therefore, the original performance of the hexagonal boron nitride powder may be impaired. On the other hand, if the temperature range 1 becomes too high, functional groups such as polar hydroxyl groups disappear on the surface of the primary particles of hexagonal boron nitride, making it difficult to charge them. A similar tendency occurs when the number of repetitions (number of cycles) becomes too large.
黒鉛化指数（ＧＩ）は、粉末Ｘ線回折法を利用し、黒鉛と同様の方法で、その黒鉛化指数を算出することができる。即ち、黒鉛化指数は、Ｘ線回折スペクトルの（１００）面に由来するピークの面積Ｓ１、（１０１）面に由来するピークの面積Ｓ２、及び（１０２）面に由来するピークの面積Ｓ３の各値を、（式１）に代入することによって算出することができることが知られている（Ｊ．Ｔｈｏｍａｓ，ｅｔ．ａｌ，Ｊ．Ａｍ．Ｃｈｅｍ．Ｓｏｃ．８４，４６１９（１９６２））。これを六方晶窒化ホウ素に適用したものである。
黒鉛化指数＝（Ｓ１＋Ｓ２）／Ｓ３ （１）
The graphitization index (GI) can be calculated using a powder X-ray diffraction method in the same manner as for graphite. That is, the graphitization index is determined by the area S 1 of the peak originating from the (100) plane in the X-ray diffraction spectrum, the area S 2 of the peak originating from the (101) plane, and the area S of the peak originating from the (102) plane. It is known that each value of 3 can be calculated by substituting (Equation 1) (J. Thomas, et. al, J. Am. Chem. Soc. 84, 4619 (1962)). This is applied to hexagonal boron nitride.
Graphitization index = (S 1 + S 2 )/S 3 (1)
式（１）におけるＳ１は、六方晶窒化ホウ素の（１００）面のＸ線回折スペクトルに相当するピークの面積（積分強度比）であり、具体的には２θ＝４０度以上且つ４２．５度以下のピークの面積である。同様にＳ２は六方晶窒化ホウ素の（１０１）面のＸ線回折スペクトルに相当するピークの面積（積分強度比）であり、具体的には２θ＝４３度以上且つ４５度以下のピークの面積である。Ｓ３は六方晶窒化ホウ素の（１０２）面のＸ線回折スペクトルに相当するピークの面積（積分強度比）であり、具体的には２θ＝４８度以上且つ５２度以下のピークの面積である。なお、各ピークの面積を求めるにあたり、２θ＝３８度と５４度における高さを直線で結んでベースラインを作成し、このベースラインを基準として各ピーク面積が算出される。 S1 in formula (1) is the area (integrated intensity ratio) of the peak corresponding to the X-ray diffraction spectrum of the (100) plane of hexagonal boron nitride, and specifically, 2θ = 40 degrees or more and 42.5 This is the area of the peak below the degree. Similarly, S2 is the area (integrated intensity ratio) of the peak corresponding to the X-ray diffraction spectrum of the (101) plane of hexagonal boron nitride, specifically the area of the peak at 2θ = 43 degrees or more and 45 degrees or less It is. S3 is the area (integrated intensity ratio) of the peak corresponding to the X-ray diffraction spectrum of the (102) plane of hexagonal boron nitride, specifically the area of the peak at 2θ = 48 degrees or more and 52 degrees or less . In calculating the area of each peak, a baseline is created by connecting the heights at 2θ=38 degrees and 54 degrees with a straight line, and each peak area is calculated using this baseline as a reference.
黒鉛化指数は六方晶窒化ホウ素の結晶性の指標となり、高結晶性でかつ粒子が十分に成長した場合には、粒子が配向しやすくなるため、六方晶窒化ホウ素粉末の黒鉛化指数は小さくなる傾向がある。 The graphitization index is an indicator of the crystallinity of hexagonal boron nitride. If the crystallinity is high and the particles have grown sufficiently, the particles will be easily oriented, so the graphitization index of hexagonal boron nitride powder will be small. Tend.
焼成工程で得られた焼成物は、凝集物を維持できるのであれば通常の粉砕装置で粉砕してよい。粉砕した粉砕粉の中には、六方晶窒化ホウ素以外に不純物が含まれる場合がある。不純物としては、残存する助剤、及び水溶性ホウ素化合物等が挙げられる。精製工程では、このような不純物を、洗浄によって低減する。洗浄後、固液分離して乾燥し、乾燥粉末を得る。洗浄に用いる洗浄液としては、水、酸性物質を含む水溶液、有機溶媒、有機溶媒と水との混合液等が挙げられる。不純物の二次的な混入を避ける観点から、電気伝導度が１ｍＳ／ｍ以下の水を使用してよい。酸性物質としては、例えば塩酸、硝酸等の無機酸が挙げられる。有機溶媒としては、例えば、メタノール、エタノール、プロパノール、イソプロピルアルコール及びアセトン等の水溶性の有機溶媒が挙げられる。洗浄方法に特に制限はなく、例えば、粉砕粉を洗浄液中に浸漬し攪拌して洗浄してよく、粉砕粉に洗浄液をスプレーして洗浄してもよい。 The fired product obtained in the firing step may be pulverized using a conventional pulverizer as long as the agglomerates can be maintained. The pulverized powder may contain impurities other than hexagonal boron nitride. Examples of impurities include remaining auxiliary agents and water-soluble boron compounds. In the purification process, such impurities are reduced by washing. After washing, solid-liquid separation is performed and dried to obtain a dry powder. Examples of the cleaning liquid used for cleaning include water, an aqueous solution containing an acidic substance, an organic solvent, and a mixed solution of an organic solvent and water. From the viewpoint of avoiding secondary contamination of impurities, water having an electrical conductivity of 1 mS/m or less may be used. Examples of acidic substances include inorganic acids such as hydrochloric acid and nitric acid. Examples of the organic solvent include water-soluble organic solvents such as methanol, ethanol, propanol, isopropyl alcohol, and acetone. There are no particular restrictions on the cleaning method, and for example, the pulverized powder may be immersed in a cleaning liquid and washed by stirring, or the pulverized powder may be cleaned by spraying the cleaning liquid onto the pulverized powder.
洗浄終了後、デカンテーション、吸引ろ過機、加圧ろ過機、回転式ろ過機、沈降分離機又はこれらを組み合わせた装置を用いて洗浄液を固液分離してよい。分離した固形分を通常の乾燥機で乾燥して乾燥粉末を得てもよい。乾燥機は、例えば、棚式乾燥機、流動層乾燥機、噴霧乾燥機、回転型乾燥機、ベルト式乾燥機、及びこれらの組み合わせが挙げられる。乾燥後に、粗大粒子を除去するために、例えば篩による分級を行ってもよい。 After the washing is completed, the washing liquid may be separated into solid and liquid using decantation, a suction filter, a pressure filter, a rotary filter, a sedimentation separator, or a combination thereof. The separated solids may be dried in a conventional dryer to obtain a dry powder. Dryers include, for example, tray dryers, fluidized bed dryers, spray dryers, rotary dryers, belt dryers, and combinations thereof. After drying, classification using a sieve may be performed, for example, in order to remove coarse particles.
このようにして、上述の六方晶窒化ホウ素粉末を得ることができる。ただし、精製工程を行うことは必ずしも必須ではない。上記製造方法で得られる六方晶窒化ホウ素粉末は、図１及び図２に示す攪拌装置を用いて、３００ｒｐｍで５分間攪拌したときの帯電量の絶対値が０．８ｎｃ／ｇ以上である。上記帯電量の絶対値は、０．９ｎｃ／ｇ以上であってよく、１．０ｎｃ／ｇ以上であってもよい。上記帯電量は、過度な凝集を抑制する観点から、２ｎｃ／ｇ未満であってよく、１．５ｎｃ／ｇ未満であってもよい。 In this way, the above-mentioned hexagonal boron nitride powder can be obtained. However, it is not always essential to perform a purification step. The hexagonal boron nitride powder obtained by the above manufacturing method has an absolute value of charge amount of 0.8 nc/g or more when stirred at 300 rpm for 5 minutes using the stirring device shown in FIGS. 1 and 2. The absolute value of the amount of charge may be 0.9 nc/g or more, or 1.0 nc/g or more. The above-mentioned charge amount may be less than 2 nc/g, and may be less than 1.5 nc/g, from the viewpoint of suppressing excessive aggregation.
上述の六方晶窒化ホウ素粉末の実施形態に係る説明は、六方晶窒化ホウ素粉末の製造方法の実施形態に係る説明にも適用することができる。六方晶窒化ホウ素粉末の製造方法は、上述の実施形態に限定されない。例えば、焼成工程の後に、超音波振動を与えるホモジナイザー等を用いて、六方晶窒化ホウ素粉末を解砕する解砕工程を行ってもよい。 The description of the embodiment of the hexagonal boron nitride powder described above can also be applied to the description of the embodiment of the method for producing hexagonal boron nitride powder. The method for producing hexagonal boron nitride powder is not limited to the embodiments described above. For example, after the firing step, a crushing step of crushing the hexagonal boron nitride powder may be performed using a homogenizer or the like that applies ultrasonic vibration.
以上、本開示の幾つかの実施形態について説明したが、本開示は上記実施形態に何ら限定されるものではない。 Although several embodiments of the present disclosure have been described above, the present disclosure is not limited to the above embodiments.
実施例及び比較例を参照して本開示の内容をより詳細に説明するが、本開示は下記の実施例に限定されるものではない。 The contents of the present disclosure will be explained in more detail with reference to Examples and Comparative Examples, but the present disclosure is not limited to the following Examples.
（実施例１）
［六方晶窒化ホウ素粉末の調製］
＜仮焼工程＞
ホウ酸粉末（純度９９．８質量％以上、関東化学株式会社製）１００．０ｇ、及びメラミン粉末（純度９９．０質量％以上、富士フィルム和光純薬株式会社製）９０．０ｇを、アルミナ製乳鉢を用いて１０分間混合し混合原料を得た。乾燥後の混合原料を、六方晶窒化ホウ素製の容器に入れ、電気炉内に配置した。電気炉内に窒素ガスを流通させながら、１０℃／分の速度で室温から１０００℃に昇温した。１０００℃で２時間保持した後、加熱を止めて自然冷却した。温度が１００℃以下になった時点で電気炉を開放した。このようにして、低結晶性の六方晶窒化ホウ素を含む仮焼物を得た。
(Example 1)
[Preparation of hexagonal boron nitride powder]
<Calcination process>
100.0 g of boric acid powder (purity of 99.8% by mass or more, manufactured by Kanto Kagaku Co., Ltd.) and 90.0 g of melamine powder (purity of 99.0% by mass or more, manufactured by Fuji Film Wako Pure Chemical Industries, Ltd.) were made of alumina powder. The mixture was mixed for 10 minutes using a mortar to obtain a mixed raw material. The mixed raw material after drying was placed in a container made of hexagonal boron nitride and placed in an electric furnace. While flowing nitrogen gas into the electric furnace, the temperature was raised from room temperature to 1000°C at a rate of 10°C/min. After holding at 1000°C for 2 hours, heating was stopped and the mixture was allowed to cool naturally. The electric furnace was opened when the temperature became 100°C or lower. In this way, a calcined product containing hexagonal boron nitride with low crystallinity was obtained.
＜焼成工程＞
仮焼物１００．０ｇに、炭酸ナトリウム（純度９９．５質量％以上）を３．０ｇ添加し、アルミナ製乳鉢を用いて１０分間混合した。混合物を、上述の電気炉内に配置した。電気炉内に窒素ガスを流通させながら、室温から１７００℃に昇温した。１７００℃で４時間保持した後、加熱を止めて２５℃まで自然冷却した。その後、１７００℃に再び昇温し、１７００℃で４時間保持した後、加熱を止めて２５℃まで自然冷却した。得られた焼成物を回収し、アルミナ製乳鉢で３分間粉砕して、六方晶窒化ホウ素の粗粉を得た。
<Baking process>
3.0 g of sodium carbonate (purity of 99.5% by mass or more) was added to 100.0 g of the calcined product, and mixed for 10 minutes using an alumina mortar. The mixture was placed in the electric furnace described above. While flowing nitrogen gas into the electric furnace, the temperature was raised from room temperature to 1700°C. After holding at 1700°C for 4 hours, heating was stopped and the mixture was naturally cooled to 25°C. Thereafter, the temperature was raised again to 1700°C and held at 1700°C for 4 hours, then heating was stopped and the mixture was naturally cooled to 25°C. The obtained fired product was collected and ground in an alumina mortar for 3 minutes to obtain a coarse powder of hexagonal boron nitride.
＜黒鉛化指数の測定＞
得られた粗粉のＸ線回折測定を行い、上記式（１）によって黒鉛化指数（ＧＩ）を算出した。黒鉛化指数は表１に示すとおりであった。
<Measurement of graphitization index>
The obtained coarse powder was subjected to X-ray diffraction measurement, and the graphitization index (GI) was calculated using the above formula (1). The graphitization index was as shown in Table 1.
＜精製工程＞
六方晶窒化ホウ素の粗粉中に含まれる不純物を除くため、希硝酸５００ｇ（硝酸濃度：５質量％）に、粗粉を３０ｇ投入し、室温で６０分間攪拌した。攪拌後、吸引ろ過によって固液分離し、ろ液が中性になるまで水（電気伝導度１ｍＳ／ｍ）を入れ替えて洗浄した。洗浄後、乾燥機を用いて１２０℃で２４時間乾燥して乾燥粉末を得た。これを実施例１の六方晶窒化ホウ素粉末とした。
<Refining process>
In order to remove impurities contained in the hexagonal boron nitride coarse powder, 30 g of the coarse powder was added to 500 g of dilute nitric acid (nitric acid concentration: 5% by mass) and stirred at room temperature for 60 minutes. After stirring, solid-liquid separation was performed by suction filtration, and water (electrical conductivity: 1 mS/m) was replaced and washed until the filtrate became neutral. After washing, it was dried at 120° C. for 24 hours using a drier to obtain a dry powder. This was used as the hexagonal boron nitride powder of Example 1.
［六方晶窒化ホウ素粉末の評価］
＜帯電減衰性の評価＞
実施例１で作製した六方晶窒化ホウ素粉末の帯電量を、粉体摩擦帯電量測定装置（株式会社ナノシーズ製、製品名：ＮＳ－Ｋ１００）を用いて測定した。具体的には、内径９０ｍｍ、及び、高さ１２０ｍｍのＰＥＴ製の容器に１０ｇの六方晶窒化ホウ素粉末を入れた。六方晶窒化ホウ素粉末の層の内部にＰＥＦＥ製の攪拌羽根を配置し、図１に示す状態とした（ｈ＝５ｍｍ）。そして、３００ｒｐｍの回転数で５分間攪拌した。攪拌機としては、ＨＥＤＯＮ スリーワンモータの汎用攪拌機を用いた。この攪拌機のシャフトに、ポリテトラフルオロエチレン製の４枚羽根を有する１段の攪拌翼（（株）サンプラテック製の「ＰＴＦＥ４枚羽根スクリュー攪拌棒」、型番：２３７０７、ロッド径：９．５ｍｍ、長さ：６５０ｍｍ、回転羽根径（直径ｄ）：６０ｍｍ）を取り付けて攪拌した。攪拌直後の六方晶窒化ホウ素粉末の帯電量を上述の粉体摩擦帯電量測定装置を用いて測定した。帯電量の測定結果は表１のとおりであった。
[Evaluation of hexagonal boron nitride powder]
<Evaluation of charge attenuation>
The amount of charge of the hexagonal boron nitride powder produced in Example 1 was measured using a powder friction charge measuring device (manufactured by Nano Seeds Co., Ltd., product name: NS-K100). Specifically, 10 g of hexagonal boron nitride powder was placed in a PET container with an inner diameter of 90 mm and a height of 120 mm. A stirring blade made of PEFE was placed inside the layer of hexagonal boron nitride powder to create the state shown in FIG. 1 (h=5 mm). Then, the mixture was stirred for 5 minutes at a rotation speed of 300 rpm. As the stirrer, a HEDON three-one motor general-purpose stirrer was used. The shaft of this stirrer is equipped with a one-stage stirring blade having four blades made of polytetrafluoroethylene ("PTFE 4-blade screw stirring rod" manufactured by Sunplatec Co., Ltd., model number: 23707, rod diameter: 9.5 mm, length). A rotary blade diameter (diameter d): 650 mm and a rotating blade diameter (diameter d) of 60 mm were attached for stirring. Immediately after stirring, the amount of charge on the hexagonal boron nitride powder was measured using the above-mentioned powder friction charge amount measuring device. The measurement results of the amount of charge were as shown in Table 1.
＜触感の評価＞
実施例１で作製した六方晶窒化ホウ素粉末の安息角を、ＪＩＳ Ｒ ９３０１－２－２：１９９９に基づいて測定した。その結果は表１に示すとおりであった。安息角が大きすぎると粒子同士の付着が強すぎて伸びづらい触感になる。安息角が６２°である実施例３は、実施例１や実施例２ほどのふわふわ感は無いが、「やや付着が強い」程度であり、良好な触感を有していた。一方、安息角が小さすぎると粒子同士の付着が弱く「さらさら」の触感であった。中間の安息角であれば、粒子同士が適度に付着して「ふわふわ」の触感であった。表１には、表２の評価基準に基づく触感の評価結果を示した。
<Tactile evaluation>
The angle of repose of the hexagonal boron nitride powder produced in Example 1 was measured based on JIS R 9301-2-2:1999. The results were as shown in Table 1. If the angle of repose is too large, the adhesion between particles will be too strong, resulting in a texture that is difficult to stretch. Example 3, in which the angle of repose was 62°, did not have the same fluffy feel as Examples 1 and 2, but had a "slightly strong adhesion" and had a good tactile feel. On the other hand, when the angle of repose was too small, the adhesion of particles to each other was weak, resulting in a "smooth" feel. At an intermediate angle of repose, the particles adhered to each other moderately, giving a "fluffy" feel. Table 1 shows the tactile evaluation results based on the evaluation criteria in Table 2.
（実施例２）
実施例１と同様にして仮焼物を得た。次に以下の焼成工程を行った。仮焼物１００．０ｇに、炭酸ナトリウム（純度９９．５質量％以上）を３．０ｇ添加し、アルミナ製乳鉢を用いて１０分間混合した。混合物を、上述の電気炉内に配置した。電気炉内に窒素ガスを流通させながら、室温から１７００℃に昇温した。１７００℃の加熱温度で６時間保持した後、加熱を止めて室温まで自然冷却した。その後、１７００℃に再び昇温し、１７００℃で６時間保持した後、加熱を止めて２５℃まで自然冷却した。得られた焼成物を回収し、アルミナ製乳鉢で３分間粉砕して、六方晶窒化ホウ素の粗粉を得た。その後、実施例１と同様にして、黒鉛化指数の測定、精製工程及び六方晶窒化ホウ素粉末の評価を行った。評価結果は表１に示すとおりであった。
(Example 2)
A calcined product was obtained in the same manner as in Example 1. Next, the following firing process was performed. 3.0 g of sodium carbonate (purity of 99.5% by mass or more) was added to 100.0 g of the calcined product, and mixed for 10 minutes using an alumina mortar. The mixture was placed in the electric furnace described above. While flowing nitrogen gas into the electric furnace, the temperature was raised from room temperature to 1700°C. After maintaining the heating temperature at 1700° C. for 6 hours, heating was stopped and the mixture was naturally cooled to room temperature. Thereafter, the temperature was raised again to 1700°C and held at 1700°C for 6 hours, then heating was stopped and the mixture was naturally cooled to 25°C. The obtained fired product was collected and ground in an alumina mortar for 3 minutes to obtain a coarse powder of hexagonal boron nitride. Thereafter, in the same manner as in Example 1, the graphitization index was measured, the purification process, and the hexagonal boron nitride powder was evaluated. The evaluation results were as shown in Table 1.
（実施例３）
実施例１と同様にして仮焼物を得た。次に以下の焼成工程を行った。仮焼物１００．０ｇに、炭酸ナトリウム（純度９９．５質量％以上）を３．０ｇ添加し、アルミナ製乳鉢を用いて１０分間混合した。混合物を、上述の電気炉内に配置した。電気炉内に窒素ガスを流通させながら、室温から１７００℃に昇温した。１７００℃の加熱温度で２時間保持した後、加熱を止めて室温まで自然冷却した。その後、再び、室温から１７００℃に昇温した。１７００℃で２時間保持した後、加熱を止めて室温まで自然冷却した。その後、実施例１と同様にして、黒鉛化指数の測定、精製工程及び六方晶窒化ホウ素粉末の評価を行った。評価結果は表１に示すとおりであった。
(Example 3)
A calcined product was obtained in the same manner as in Example 1. Next, the following firing process was performed. 3.0 g of sodium carbonate (purity of 99.5% by mass or more) was added to 100.0 g of the calcined product, and mixed for 10 minutes using an alumina mortar. The mixture was placed in the electric furnace described above. While flowing nitrogen gas into the electric furnace, the temperature was raised from room temperature to 1700°C. After maintaining the heating temperature at 1700° C. for 2 hours, heating was stopped and the mixture was naturally cooled to room temperature. Thereafter, the temperature was raised again from room temperature to 1700°C. After holding at 1700°C for 2 hours, heating was stopped and the mixture was naturally cooled to room temperature. Thereafter, in the same manner as in Example 1, the graphitization index was measured, the purification process, and the hexagonal boron nitride powder was evaluated. The evaluation results were as shown in Table 1.
（比較例１）
焼成工程における加熱温度を２０００℃にしたこと以外は、実施例３と同様にして六方晶窒化ホウ素粉末を調製した。そして、実施例１と同様にして、六方晶窒化ホウ素粉末の評価を行った。評価結果は表１に示すとおりであった。
(Comparative example 1)
Hexagonal boron nitride powder was prepared in the same manner as in Example 3, except that the heating temperature in the firing step was 2000°C. Then, in the same manner as in Example 1, the hexagonal boron nitride powder was evaluated. The evaluation results were as shown in Table 1.
実施例１，２，３の六方晶窒化ホウ素粉末は、帯電量の絶対値が０．８ｎｃ／ｇ以上であった。外観を観察すると、実施例１，２，３は、凝集ダマを形成しているのに対し、比較例１では、凝集ダマが実施例１，２，３よりも明らかに少なかった。実施例１，２は、比較例１よりも、非常に優れた触感を有していた。実施例３は実施例１及び２と比較すると、やや付着が強いものの、比較例１よりも優れた触感を有していた。 The hexagonal boron nitride powders of Examples 1, 2, and 3 had an absolute value of the amount of charge of 0.8 nc/g or more. When observing the appearance, Examples 1, 2, and 3 formed aggregated lumps, whereas Comparative Example 1 had clearly fewer aggregated lumps than Examples 1, 2, and 3. Examples 1 and 2 had a much better feel than Comparative Example 1. Although Example 3 had a slightly stronger adhesion than Examples 1 and 2, it had a better tactile feel than Comparative Example 1.
本開示によれば、触感に優れる化粧料の原料に適する六方晶窒化ホウ素粉末及びその製造方法を提供することができる。また、本開示では、上述の六方晶窒化ホウ素粉末を用いることによって、触感に優れる化粧料及びその製造方法を提供することができる。 According to the present disclosure, it is possible to provide a hexagonal boron nitride powder that is suitable as a raw material for cosmetics with excellent texture and a method for producing the same. Further, in the present disclosure, by using the above-described hexagonal boron nitride powder, it is possible to provide a cosmetic with excellent texture and a method for producing the same.
１０…容器、２０…攪拌機、２２…シャフト、２４…攪拌翼、２６…羽根、３０…六方晶窒化ホウ素粉末。
DESCRIPTION OF
Claims (6)
前記仮焼物と助剤とを含む混合粉末を、不活性ガス、アンモニアガス又はこれらの混合ガスの雰囲気中、１６００～１７５０℃の温度範囲への加熱と１００℃以下の温度範囲への冷却を複数回繰り返して行って、黒鉛化指数が１．１～１．６である焼成物を得る焼成工程と、
前記焼成物を粉砕、洗浄及び乾燥して六方晶窒化ホウ素粉末を得る工程と、を有し、
内径９０ｍｍ及び高さ１２０ｍｍであるポリエチレンテレフタレート製の容器に前記六方晶窒化ホウ素粉末を１０ｇ収容し、ポリテトラフルオロエチレン製の４枚羽根を有する直径６０ｍｍの攪拌翼を用いて、３００ｒｐｍで５分間攪拌したときの帯電量の絶対値が０．８ｎｃ／ｇ以上且つ２ｎｃ／ｇ未満である、六方晶窒化ホウ素粉末の製造方法。 Raw material powder containing boron-containing compound powder and nitrogen-containing compound powder is fired at 600 to 1300°C in an atmosphere of inert gas, ammonia gas, or a mixed gas of these to produce a powder containing hexagonal boron nitride. a calcination step for obtaining a calcined product;
The mixed powder containing the calcined product and the auxiliary agent is heated to a temperature range of 1600 to 1750°C and cooled to a temperature range of 100°C or less in an atmosphere of inert gas, ammonia gas, or a mixed gas thereof. a firing step which is repeated several times to obtain a fired product having a graphitization index of 1.1 to 1.6 ;
pulverizing, washing and drying the fired product to obtain hexagonal boron nitride powder,
10 g of the hexagonal boron nitride powder was placed in a container made of polyethylene terephthalate with an inner diameter of 90 mm and a height of 120 mm, and stirred for 5 minutes at 300 rpm using a stirring blade with a diameter of 60 mm and having four blades made of polytetrafluoroethylene. A method for producing hexagonal boron nitride powder , wherein the absolute value of the amount of charge when doing so is 0.8 nc/g or more and less than 2 nc/g .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019234707A JP7372143B2 (en) | 2019-12-25 | 2019-12-25 | Hexagonal boron nitride powder and its manufacturing method, and cosmetics and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019234707A JP7372143B2 (en) | 2019-12-25 | 2019-12-25 | Hexagonal boron nitride powder and its manufacturing method, and cosmetics and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2021102541A JP2021102541A (en) | 2021-07-15 |
| JP7372143B2 true JP7372143B2 (en) | 2023-10-31 |
Family
ID=76754845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019234707A Active JP7372143B2 (en) | 2019-12-25 | 2019-12-25 | Hexagonal boron nitride powder and its manufacturing method, and cosmetics and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP7372143B2 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010076956A (en) | 2008-09-24 | 2010-04-08 | Mitsui Chemicals Inc | Method for evaluating boron nitride powder |
| JP2015107889A (en) | 2013-12-04 | 2015-06-11 | 株式会社カネカ | Boron nitride having improved dispersibility and resin composition using the same |
| JP2015529611A (en) | 2012-08-03 | 2015-10-08 | 燕山大学 | Ultra-hard nano-twinned boron nitride bulk material and synthesis method thereof |
| JP2017210383A (en) | 2016-05-23 | 2017-11-30 | 株式会社栗本鐵工所 | Method for producing boron nitride granule |
| JP2018165241A (en) | 2017-03-28 | 2018-10-25 | デンカ株式会社 | Hexagonal boron nitride powder, method for producing the same, and cosmetics |
-
2019
- 2019-12-25 JP JP2019234707A patent/JP7372143B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010076956A (en) | 2008-09-24 | 2010-04-08 | Mitsui Chemicals Inc | Method for evaluating boron nitride powder |
| JP2015529611A (en) | 2012-08-03 | 2015-10-08 | 燕山大学 | Ultra-hard nano-twinned boron nitride bulk material and synthesis method thereof |
| JP2015107889A (en) | 2013-12-04 | 2015-06-11 | 株式会社カネカ | Boron nitride having improved dispersibility and resin composition using the same |
| JP2017210383A (en) | 2016-05-23 | 2017-11-30 | 株式会社栗本鐵工所 | Method for producing boron nitride granule |
| JP2018165241A (en) | 2017-03-28 | 2018-10-25 | デンカ株式会社 | Hexagonal boron nitride powder, method for producing the same, and cosmetics |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021102541A (en) | 2021-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6618800B2 (en) | Process for dry grinding of particulate material | |
| CN107922743B (en) | Heat conductive resin composition | |
| JP6734239B2 (en) | Hexagonal boron nitride powder and cosmetics | |
| JP4771027B2 (en) | Zinc oxide particles, production method thereof, heat dissipating filler, heat dissipating resin composition, heat dissipating grease, and heat dissipating coating composition | |
| JP7372142B2 (en) | Hexagonal boron nitride powder and its manufacturing method, and cosmetics and its manufacturing method | |
| JP7204732B2 (en) | Hexagonal boron nitride powder, method for producing hexagonal boron nitride powder for cosmetics, and cosmetics | |
| EP3412626A1 (en) | Method for obtaining a graphene product, graphene product and use thereof | |
| US20110081550A1 (en) | Zinc oxide particle, method for producing it, exoergic filler, exoergic resin composition, exoergic grease and exoergic coating composition | |
| US20110081548A1 (en) | Zinc oxide particle, method for producing it, exoergic filler, exoergic resin composition, exoergic grease and exoergic coating composition | |
| JP7429532B2 (en) | Hexagonal boron nitride powder and its manufacturing method, and cosmetics and its manufacturing method | |
| JP7372143B2 (en) | Hexagonal boron nitride powder and its manufacturing method, and cosmetics and its manufacturing method | |
| JP7431577B2 (en) | Hexagonal boron nitride powder and its manufacturing method, and cosmetics and its manufacturing method | |
| JP7372140B2 (en) | Hexagonal boron nitride powder and its manufacturing method, and cosmetics and its manufacturing method | |
| US9234103B2 (en) | Filler particles, resin composition, grease, and coating composition | |
| JP7360962B2 (en) | Hexagonal boron nitride powder and its manufacturing method, and cosmetics and its manufacturing method | |
| JP2021102536A (en) | Hexagonal boron nitride powder, method for producing the same, cosmetic and method for evaluating quality | |
| WO2022264325A1 (en) | Hexagonal boron nitride powder and method for producing same, and cosmetic preparation and method for producing same | |
| JP7372141B2 (en) | Hexagonal boron nitride powder and its manufacturing method, and cosmetics and its manufacturing method | |
| WO2022264326A1 (en) | Hexagonal boron nitride powder and method for producing same, and cosmetic preparation and method for producing same | |
| WO2022264324A1 (en) | Hexagonal boron nitride powder and method for producing same, cosmetic preparation and method for producing same, and quality evaluation method | |
| JP5552883B2 (en) | Low-conductivity zinc oxide particles, heat-dissipating filler, heat-dissipating resin composition, heat-dissipating grease, heat-dissipating coating composition, and method for producing low-conducting zinc oxide particles | |
| US20240197582A1 (en) | Hexagonal boron nitride powder for cosmetics, and cosmetic | |
| WO2022264335A1 (en) | Hexagonal boron nitride powder and method for producing same, and cosmetic and method for producing same | |
| TW202300441A (en) | Hexagonal boron nitride powder and method for producing same, and cosmetic material and method for producing same | |
| WO2022264327A1 (en) | Hexagonal boron nitride powder and method for producing same, and cosmetics and method for manufacturing same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20220712 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20230516 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20230523 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20230710 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20230919 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20231019 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 7372143 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |