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1. (WO2019026811) METHOD FOR PRODUCING ZIRCONIA PARTICLE-CONTAINING POWDER
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Pub. No.: WO/2019/026811 International Application No.: PCT/JP2018/028331
Publication Date: 07.02.2019 International Filing Date: 27.07.2018
IPC:
C01G 25/02 (2006.01) ,C04B 35/486 (2006.01) ,A61C 13/083 (2006.01)
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
G
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F94
25
Compounds of zirconium
02
Oxides
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35
Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
01
based on oxides
48
based on zirconium or hafnium oxides or zirconates or hafnates
486
Fine ceramics
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
C
DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
13
Dental prostheses; Making same
08
Artificial teeth; Making same
083
Porcelain or ceramic teeth
Applicants:
クラレノリタケデンタル株式会社 KURARAY NORITAKE DENTAL INC. [JP/JP]; 岡山県倉敷市酒津1621番地 1621, Sakazu, Kurashiki-shi, Okayama 7100801, JP
Inventors:
工藤 恭敬 KUDO Yasutaka; JP
Agent:
鎌田 耕一 KAMADA Koichi; JP
田村 康晃 TAMURA Yasuaki; JP
Priority Data:
2017-14754631.07.2017JP
Title (EN) METHOD FOR PRODUCING ZIRCONIA PARTICLE-CONTAINING POWDER
(FR) PROCÉDÉ DE FABRICATION DE POUDRE CONTENANT DES PARTICULES DE ZIRCONE
(JA) ジルコニア粒子を含む粉末の製造方法
Abstract:
(EN) The present invention provides a method for producing a zirconia particle-containing powder that enables the convenient production of a zirconia sintered body that combines high transparency with high strength. The present invention relates to a method for producing a zirconia particle-containing powder, wherein the production method has a drying step for spray drying a zirconia particle-containing slurry, the average primary particle diameter of the zirconia particles is not more than 30 nm, and the dispersion medium in the slurry contains a liquid having a surface tension at 25°C of not more than 50 mN/m. The zirconia particles preferably contain 2.0-9.0 mol% yttria, and the content of the liquid in the dispersion medium is preferably at least 50 mass%.
(FR) L'invention fournit un procédé de fabrication de poudre contenant des particules de zircone qui permet de fabriquer facilement un corps fritté de zircone combinant des propriétés translucides élevées et une solidité élevée. Plus précisément, l'invention concerne un procédé de fabrication de poudre contenant des particules de zircone qui présente une étape de séchage au cours de laquelle une bouillie contenant des particules de zircone est séchée par pulvérisation, le diamètre moyen de particule primaire des particules de zircone étant inférieur ou égal à 30nm. En outre, la bouillie présente un milieu de dispersion qui contient un liquide de tension superficielle à 25°C inférieure ou égale à 50mN/m. De préférence, les particules de zircone contiennent 2,0 à 9,0% en moles d'une yttria, et la teneur en liquide dans le milieu de dispersion est supérieure ou égale à 50% en masse.
(JA) 本発明は、高い透光性および高い強度を兼ね備えたジルコニア焼結体を簡便に製造することのできる、ジルコニア粒子を含む粉末の製造方法を提供する。本発明は、ジルコニア粒子を含む粉末の製造方法であって、ジルコニア粒子を含むスラリーを噴霧乾燥する乾燥工程を有し、ジルコニア粒子の平均一次粒子径が30nm以下であり、スラリーの分散媒が、25℃における表面張力が50mN/m以下の液体を含む、製造方法に関する。ジルコニア粒子はイットリアを2.0~9.0モル%含むことが好ましく、分散媒における前記液体の含有量は50質量%以上であることが好ましい。
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)