The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 07, 2012
Filed:
Jul. 24, 2008
Woo-ram Lee, Daejeon, KR;
Sang-ho Kim, Daejeon, KR;
Sung-ho Yoon, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
A preparation method of a copper particle composition includes dissolving a copper carboxyl compound, or a carboxyl group-containing compound and a copper salt, in a solvent to prepare a copper(II) precursor solution; putting a weak reducing agent with a standard reduction potential of −0.2 to −0.05V to the prepared copper(II) precursor solution to assemble a plurality of CuO fine particles having an average diameter of 1 to 100 nm with a standard deviation of 0 to 10%, thereby forming spherical CuO assembly particles having an average diameter of 0.1 to 10 μm with a standard deviation of 0 to 40%; reducing the spherical CuO assembly particles into copper particles by using a reducing agent; and separating the copper particles from the result product. Thus, copper particles can be produced fast, economically, and the obtained copper particles have good crystallinity and good resistance against oxidation.