Patent ID: 11859112
Assignee: KYOCERA CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  B  H | IPC B  C  H

Claim 1:
2. The paste composition according to claim 1, wherein a degree of oxidation of (A) the copper fine particles as calculated by the following formula (I) is less than 3%,

degree of oxidation (%)=([CuO]+[Cu2O])/([Cu]+[CuO]+[Cu2O])×100   (I), where [Cu] represents the content (mass %) of copper (Cu) in the copper fine particles, [CuO] represents the content of copper (II) oxide in the copper fine particles, and [Cu2O] represents the content (mass %) of copper (I) oxide in the copper fine particles.