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1. (WO2018142943) METHOD FOR MANUFACTURING HIGHLY CRYSTALLINE SILVER PARTICLES
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Pub. No.: WO/2018/142943 International Application No.: PCT/JP2018/001287
Publication Date: 09.08.2018 International Filing Date: 17.01.2018
IPC:
B22F 9/24 (2006.01) ,B22F 1/00 (2006.01) ,B22F 9/20 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
F
WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
9
Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor
16
using chemical processes
18
with reduction of metal compounds
24
starting from liquid metal compounds, e.g. solutions
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
F
WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
1
Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
F
WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
9
Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor
16
using chemical processes
18
with reduction of metal compounds
20
starting from solid metal compounds
Applicants: M. TECHNIQUE CO., LTD.[JP/JP]; 2-16, Technostage 2-chome, Izumi-shi, Osaka 5941144, JP
Inventors: MURATA Yasunari; JP
ENOMURA Masakazu; JP
Agent: SAKAMOTO Tomohiro; JP
Priority Data:
2017-01606731.01.2017JP
Title (EN) METHOD FOR MANUFACTURING HIGHLY CRYSTALLINE SILVER PARTICLES
(FR) PROCÉDÉ DE FABRICATION DE PARTICULES D'ARGENT HAUTEMENT CRISTALLINES
(JA) 高結晶銀微粒子の製造方法
Abstract:
(EN) The present invention is a method for manufacturing fine silver particles by reduction reaction, wherein the method for manufacturing highly crystalline silver particles is characterized in that: a silver solution that includes at least silver ions and a reducing solution that includes at least a reducing agent are made to react by a continuous wet reduction method; fine silver particles are made to precipitate; the reduction rate from the silver solution to the fine silver particles is at least 99%; the average primary particle diameter of the fine silver particles is in the range 100–1000 nm; and the average crystal diameter is at least 80% of the average primary particle diameter of the fine silver particles. The present invention makes it possible to continuously obtain, by a liquid-phase method, fine silver particles with a ratio (d/D) of the average crystal diameter (d) to the average primary particle diameter (D) being at least 95%, i.e., all of the fine silver particles are close to being single crystals.
(FR) La présente invention concerne un procédé de fabrication de fines particules d'argent par réaction de réduction, le procédé de fabrication de particules d'argent hautement cristallines étant caractérisé en ce que : une solution d'argent qui comprend au moins des ions argent et une solution réductrice qui comprend au moins un agent réducteur sont amenées à réagir par un procédé de réduction humide continue ; de fines particules d'argent sont amenées à précipiter ; le taux de réduction de la solution d'argent aux particules d'argent fines est d'au moins 99 % ; le diamètre moyen de particule primaire des fines particules d'argent est dans la plage de 100 à 1000 nm ; et le diamètre de cristal moyen est d'au moins 80 % du diamètre moyen de particule primaire des fines particules d'argent. La présente invention permet d'obtenir en continu, par un procédé en phase liquide, de fines particules d'argent ayant un rapport (d/D) du diamètre de cristal moyen (d) au diamètre moyen des particules primaires (D) étant d'au moins 95 %, c'est-à-dire que toutes les fines particules d'argent sont proches de leurs monocristaux.
(JA) 本発明は、還元反応による銀微粒子の製造方法において、少なくとも銀イオンを含む銀溶液と、少なくとも還元剤を含む還元剤溶液と、を連続湿式還元法で反応させて、銀微粒子を析出させ、上記銀溶液から銀微粒子への還元率が99%以上であり、上記銀微粒子の平均一次粒子径が100nm以上1000nm以下であり、上記銀微粒子の平均一次粒子径に対する平均結晶子径が80%以上であることを特徴とする高結晶銀微粒子の製造方法である。本発明によって、平均一次粒子径(D)に対する平均結晶子径(d)の比率(d/D)が95%以上である銀微粒子、即ち全ての銀微粒子が単結晶に近いものである銀微粒子を液相法によって連続的に得ることも可能となる。
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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)