EP 3187288 A4 20180411 - METALLIC COPPER PARTICLES, AND PRODUCTION METHOD THEREFOR
Title (en)
METALLIC COPPER PARTICLES, AND PRODUCTION METHOD THEREFOR
Title (de)
METALLISCHE KUPFERPARTIKEL UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
PARTICULES DE CUIVRE MÉTALLIQUE ET LEUR PROCÉDÉ DE PRODUCTION
Publication
Application
Priority
- JP 2014174251 A 20140828
- JP 2015081081 A 20150410
- JP 2015074025 W 20150826
Abstract (en)
[origin: EP3187288A1] Provided are: metallic copper particles exhibiting excellent low-temperature sintering properties at temperatures equal to or lower than 300°C; and a production method therefor. In these metallic copper particles, metallic copper fine particles are adhered to the surfaces of large-diameter metallic copper particles. With regard to the metallic copper particles to be produced, copper oxide and hypophosphoric acid and/or a salt thereof are mixed and reduced, preferably in the presence of 1-500 mass% of gelatin and/or collagen peptide. The reduction reaction temperature is preferably in the range of 20-100°C. The produced metallic copper particles have a volume resistivity value when heated to a temperature of 300°C under a nitrogen atmosphere of 1×10 -2 ©·cm or less.
IPC 8 full level
B22F 1/00 (2006.01); B22F 1/02 (2006.01); B22F 1/052 (2022.01); B22F 1/102 (2022.01); B22F 1/105 (2022.01); B22F 1/17 (2022.01); B22F 9/24 (2006.01); B22F 1/06 (2022.01); B22F 1/068 (2022.01)
CPC (source: EP KR US)
B22F 1/052 (2022.01 - EP KR US); B22F 1/09 (2022.01 - EP KR US); B22F 1/102 (2022.01 - EP KR US); B22F 1/105 (2022.01 - EP KR US); B22F 1/17 (2022.01 - EP KR US); B22F 9/20 (2013.01 - KR); B22F 9/24 (2013.01 - EP US); H01B 1/22 (2013.01 - KR); H01B 5/00 (2013.01 - EP KR US); H01B 13/00 (2013.01 - EP KR US); B22F 1/06 (2022.01 - EP KR US); B22F 1/068 (2022.01 - EP KR US); B22F 2009/245 (2013.01 - US); B22F 2301/10 (2013.01 - KR US); B22F 2998/10 (2013.01 - US)
Citation (search report)
- [A] JP 2007184143 A 20070719 - SUMITOMO METAL MINING CO
- [A] US 2008014359 A1 20080117 - KAMADA KEIJI [JP], et al
- [A] JP 2005183144 A 20050707 - ALPS ELECTRIC CO LTD
- See references of WO 2016031860A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3187288 A1 20170705; EP 3187288 A4 20180411; CA 2959294 A1 20160303; CN 106715009 A 20170524; JP WO2016031860 A1 20170615; KR 20170046164 A 20170428; TW 201623639 A 20160701; TW I658156 B 20190501; US 2017252801 A1 20170907; WO 2016031860 A1 20160303
DOCDB simple family (application)
EP 15835228 A 20150826; CA 2959294 A 20150826; CN 201580052136 A 20150826; JP 2015074025 W 20150826; JP 2016545578 A 20150826; KR 20177008193 A 20150826; TW 104128405 A 20150828; US 201515506574 A 20150826